path: root/src/login/login.c

// $Id: login.c,v 1.1.1.1 2004/09/10 17:26:53 MagicalTux Exp $
// new version of the login-server by [Yor]

#include <sys/types.h>
#include <sys/socket.h>
#include <stdio.h>
#include <stdlib.h>
#include <netinet/in.h>
#include <sys/time.h>
#include <time.h>
#include <sys/ioctl.h>
#include <sys/stat.h>           // for stat/lstat/fstat
#include <unistd.h>
#include <signal.h>
#include <fcntl.h>
#include <string.h>
#include <arpa/inet.h>
#include <netdb.h>

#include "core.h"
#include "socket.h"
#include "timer.h"
#include "login.h"
#include "mmo.h"
#include "version.h"
#include "db.h"
#include "lock.h"
#include "mt_rand.h"

#include "md5calc.h"

#ifdef MEMWATCH
#include "memwatch.h"
#endif

int  account_id_count = START_ACCOUNT_NUM;
int  server_num;
int  new_account_flag = 0;
int  login_port = 6900;
char lan_char_ip[16];
int  subneti[4];
int  subnetmaski[4];
char update_host[128] = "";
char main_server[20] = "";

char account_filename[1024] = "save/account.txt";
char GM_account_filename[1024] = "conf/GM_account.txt";
char login_log_filename[1024] = "log/login.log";
char login_log_unknown_packets_filename[1024] =
    "log/login_unknown_packets.log";
char date_format[32] = "%Y-%m-%d %H:%M:%S";
int  save_unknown_packets = 0;
long creation_time_GM_account_file;
int  gm_account_filename_check_timer = 15;  // Timer to check if GM_account file has been changed and reload GM account automaticaly (in seconds; default: 15)

int  display_parse_login = 0;   // 0: no, 1: yes
int  display_parse_admin = 0;   // 0: no, 1: yes
int  display_parse_fromchar = 0;    // 0: no, 1: yes (without packet 0x2714), 2: all packets

struct mmo_char_server server[MAX_SERVERS];
int  server_fd[MAX_SERVERS];
int  server_freezeflag[MAX_SERVERS];    // Char-server anti-freeze system. Counter. 5 ok, 4...0 freezed
int  anti_freeze_enable = 0;
int  ANTI_FREEZE_INTERVAL = 15;

int  login_fd;

enum
{
    ACO_DENY_ALLOW = 0,
    ACO_ALLOW_DENY,
    ACO_MUTUAL_FAILTURE,
    ACO_STRSIZE = 128,
};

int  access_order = ACO_DENY_ALLOW;
int  access_allownum = 0;
int  access_denynum = 0;
char *access_allow = NULL;
char *access_deny = NULL;

int  access_ladmin_allownum = 0;
char *access_ladmin_allow = NULL;

int  min_level_to_connect = 0;  // minimum level of player/GM (0: player, 1-99: gm) to connect on the server
int  add_to_unlimited_account = 0;  // Give possibility or not to adjust (ladmin command: timeadd) the time of an unlimited account.
int  start_limited_time = -1;   // Starting additional sec from now for the limited time at creation of accounts (-1: unlimited time, 0 or more: additional sec from now)
int  check_ip_flag = 1;         // It's to check IP of a player between login-server and char-server (part of anti-hacking system)

struct login_session_data
{
    int  md5keylen;
    char md5key[20];
};

#define AUTH_FIFO_SIZE 256
struct
{
    int  account_id, login_id1, login_id2;
    int  ip, sex, delflag;
} auth_fifo[AUTH_FIFO_SIZE];
int  auth_fifo_pos = 0;

struct auth_dat
{
    int  account_id, sex;
    char userid[24], pass[40], lastlogin[24];
    int  logincount;
    int  state;                 // packet 0x006a value + 1 (0: compte OK)
    char email[40];             // e-mail (by default: a@a.com)
    char error_message[20];     // Message of error code #6 = Your are Prohibited to log in until %s (packet 0x006a)
    time_t ban_until_time;      // # of seconds 1/1/1970 (timestamp): ban time limit of the account (0 = no ban)
    time_t connect_until_time;  // # of seconds 1/1/1970 (timestamp): Validity limit of the account (0 = unlimited)
    char last_ip[16];           // save of last IP of connection
    char memo[255];             // a memo field
    int  account_reg2_num;
    struct global_reg account_reg2[ACCOUNT_REG2_NUM];
}   *auth_dat;

int  auth_num = 0, auth_max = 0;

int  admin_state = 0;
char admin_pass[24] = "";
char gm_pass[64] = "";
int  level_new_gm = 60;

static struct dbt *gm_account_db;

#define VERSION_2_UPDATEHOST 0x01   // client supports updatehost
#define VERSION_2_SERVERORDER 0x02  // send servers in forward order
//------------------------------
// Writing function of logs file
//------------------------------
int login_log (char *fmt, ...)
{
    FILE *logfp;
    va_list ap;
    struct timeval tv;
    char tmpstr[2048];

    va_start (ap, fmt);

    logfp = fopen_ (login_log_filename, "a");
    if (logfp)
    {
        if (fmt[0] == '\0')     // jump a line if no message
            fprintf (logfp, RETCODE);
        else
        {
            gettimeofday (&tv, NULL);
            strftime (tmpstr, 24, date_format, gmtime (&(tv.tv_sec)));
            sprintf (tmpstr + strlen (tmpstr), ".%03d: %s",
                     (int) tv.tv_usec / 1000, fmt);
            vfprintf (logfp, tmpstr, ap);
        }
        fclose_ (logfp);
    }

    va_end (ap);
    return 0;
}

//----------------------------------------------------------------------
// Determine if an account (id) is a GM account
// and returns its level (or 0 if it isn't a GM account or if not found)
//----------------------------------------------------------------------
int isGM (int account_id)
{
    struct gm_account *p;

    p = numdb_search (gm_account_db, account_id);
    if (p == NULL)
        return 0;
    return p->level;
}

//-------------------------------------------------------
// Reading function of GM accounts file (and their level)
//-------------------------------------------------------
int read_gm_account ()
{
    char line[512];
    struct gm_account *p;
    FILE *fp;
    int  c = 0;
    int  GM_level;
    struct stat file_stat;

    free (gm_account_db);
    gm_account_db = numdb_init ();

    // get last modify time/date
    if (stat (GM_account_filename, &file_stat))
        creation_time_GM_account_file = 0;  // error
    else
        creation_time_GM_account_file = file_stat.st_mtime;

    if ((fp = fopen_ (GM_account_filename, "r")) == NULL)
    {
        printf ("read_gm_account: GM accounts file [%s] not found.\n",
                GM_account_filename);
        printf
            ("                 Actually, there is no GM accounts on the server.\n");
        login_log ("read_gm_account: GM accounts file [%s] not found."
                   RETCODE, GM_account_filename);
        login_log
            ("                 Actually, there is no GM accounts on the server."
             RETCODE);
        return 1;
    }
    // limited to 4000, because we send information to char-servers (more than 4000 GM accounts???)
    // int (id) + int (level) = 8 bytes * 4000 = 32k (limit of packets in windows)
    while (fgets (line, sizeof (line) - 1, fp) && c < 4000)
    {
        if ((line[0] == '/' && line[1] == '/') || line[0] == '\0'
            || line[0] == '\n' || line[0] == '\r')
            continue;
        p = calloc (sizeof (struct gm_account), 1);
        if (p == NULL)
        {
            printf ("read_gm_account: memory allocation failure (malloc)!\n");
            exit (0);
        }
        if (sscanf (line, "%d %d", &p->account_id, &p->level) != 2
            && sscanf (line, "%d: %d", &p->account_id, &p->level) != 2)
            printf
                ("read_gm_account: file [%s], invalid 'id_acount level' format.\n",
                 GM_account_filename);
        else if (p->level <= 0)
            printf
                ("read_gm_account: file [%s] %dth account (invalid level [0 or negative]: %d).\n",
                 GM_account_filename, c + 1, p->level);
        else
        {
            if (p->level > 99)
            {
                printf
                    ("read_gm_account: file [%s] %dth account (invalid level, but corrected: %d->99).\n",
                     GM_account_filename, c + 1, p->level);
                p->level = 99;
            }
            if ((GM_level = isGM (p->account_id)) > 0)
            {                   // if it's not a new account
                if (GM_level == p->level)
                    printf
                        ("read_gm_account: GM account %d defined twice (same level: %d).\n",
                         p->account_id, p->level);
                else
                    printf
                        ("read_gm_account: GM account %d defined twice (levels: %d and %d).\n",
                         p->account_id, GM_level, p->level);
            }
            if (GM_level != p->level)
            {                   // if new account or new level
                numdb_insert (gm_account_db, p->account_id, p);
                //printf("GM account:%d, level: %d->%d\n", p->account_id, GM_level, p->level);
                if (GM_level == 0)
                {               // if new account
                    c++;
                    if (c >= 4000)
                    {
                        printf
                            ("***WARNING: 4000 GM accounts found. Next GM accounts are not readed.\n");
                        login_log
                            ("***WARNING: 4000 GM accounts found. Next GM accounts are not readed."
                             RETCODE);
                    }
                }
            }
        }
    }
    fclose_ (fp);

    printf ("read_gm_account: file '%s' readed (%d GM accounts found).\n",
            GM_account_filename, c);
    login_log ("read_gm_account: file '%s' readed (%d GM accounts found)."
               RETCODE, GM_account_filename, c);

    return 0;
}

//--------------------------------------------------------------
// Test of the IP mask
// (ip: IP to be tested, str: mask x.x.x.x/# or x.x.x.x/y.y.y.y)
//--------------------------------------------------------------
int check_ipmask (unsigned int ip, const unsigned char *str)
{
    unsigned int mask = 0, i = 0, m, ip2, a0, a1, a2, a3;
    unsigned char *p = (unsigned char *) &ip2, *p2 = (unsigned char *) &mask;

    if (sscanf (str, "%d.%d.%d.%d/%n", &a0, &a1, &a2, &a3, &i) != 4 || i == 0)
        return 0;
    p[0] = a0;
    p[1] = a1;
    p[2] = a2;
    p[3] = a3;

    if (sscanf (str + i, "%d.%d.%d.%d", &a0, &a1, &a2, &a3) == 4)
    {
        p2[0] = a0;
        p2[1] = a1;
        p2[2] = a2;
        p2[3] = a3;
        mask = ntohl (mask);
    }
    else if (sscanf (str + i, "%d", &m) == 1 && m >= 0 && m <= 32)
    {
        for (i = 0; i < m && i < 32; i++)
            mask = (mask >> 1) | 0x80000000;
    }
    else
    {
        printf ("check_ipmask: invalid mask [%s].\n", str);
        return 0;
    }

//  printf("Tested IP: %08x, network: %08x, network mask: %08x\n",
//         (unsigned int)ntohl(ip), (unsigned int)ntohl(ip2), (unsigned int)mask);
    return ((ntohl (ip) & mask) == (ntohl (ip2) & mask));
}

//---------------------
// Access control by IP
//---------------------
int check_ip (unsigned int ip)
{
    int  i;
    unsigned char *p = (unsigned char *) &ip;
    char buf[32];
    enum
    { ACF_DEF, ACF_ALLOW, ACF_DENY } flag = ACF_DEF;

    if (access_allownum == 0 && access_denynum == 0)
        return 1;               // When there is no restriction, all IP are authorised.

//  +   012.345.: front match form, or
//      all: all IP are matched, or
//      012.345.678.901/24: network form (mask with # of bits), or
//      012.345.678.901/255.255.255.0: network form (mask with ip mask)
//  +   Note about the DNS resolution (like www.ne.jp, etc.):
//      There is no guarantee to have an answer.
//      If we have an answer, there is no guarantee to have a 100% correct value.
//      And, the waiting time (to check) can be long (over 1 minute to a timeout). That can block the software.
//      So, DNS notation isn't authorised for ip checking.
    sprintf (buf, "%d.%d.%d.%d.", p[0], p[1], p[2], p[3]);

    for (i = 0; i < access_allownum; i++)
    {
        const char *p = access_allow + i * ACO_STRSIZE;
        if (memcmp (p, buf, strlen (p)) == 0 || check_ipmask (ip, p))
        {
            flag = ACF_ALLOW;
            if (access_order == ACO_ALLOW_DENY)
                return 1;       // With 'allow, deny' (deny if not allow), allow has priority
            break;
        }
    }

    for (i = 0; i < access_denynum; i++)
    {
        const char *p = access_deny + i * ACO_STRSIZE;
        if (memcmp (p, buf, strlen (p)) == 0 || check_ipmask (ip, p))
        {
            flag = ACF_DENY;
            return 0;           // At this point, if it's 'deny', we refuse connection.
            break;
        }
    }

    return (flag == ACF_ALLOW || access_order == ACO_DENY_ALLOW) ? 1 : 0;
    // With 'mutual-failture', only 'allow' and non 'deny' IP are authorised.
    //   A non 'allow' (even non 'deny') IP is not authorised. It's like: if allowed and not denied, it's authorised.
    //   So, it's disapproval if you have no description at the time of 'mutual-failture'.
    // With 'deny,allow' (allow if not deny), because here it's not deny, we authorise.
}

//--------------------------------
// Access control by IP for ladmin
//--------------------------------
int check_ladminip (unsigned int ip)
{
    int  i;
    unsigned char *p = (unsigned char *) &ip;
    char buf[32];

    if (access_ladmin_allownum == 0)
        return 1;               // When there is no restriction, all IP are authorised.

//  +   012.345.: front match form, or
//      all: all IP are matched, or
//      012.345.678.901/24: network form (mask with # of bits), or
//      012.345.678.901/255.255.255.0: network form (mask with ip mask)
//  +   Note about the DNS resolution (like www.ne.jp, etc.):
//      There is no guarantee to have an answer.
//      If we have an answer, there is no guarantee to have a 100% correct value.
//      And, the waiting time (to check) can be long (over 1 minute to a timeout). That can block the software.
//      So, DNS notation isn't authorised for ip checking.
    sprintf (buf, "%d.%d.%d.%d.", p[0], p[1], p[2], p[3]);

    for (i = 0; i < access_ladmin_allownum; i++)
    {
        const char *p = access_ladmin_allow + i * ACO_STRSIZE;
        if (memcmp (p, buf, strlen (p)) == 0 || check_ipmask (ip, p))
        {
            return 1;
        }
    }

    return 0;
}

//-----------------------------------------------------
// Function to suppress control characters in a string.
//-----------------------------------------------------
int remove_control_chars (unsigned char *str)
{
    int  i;
    int  change = 0;

    for (i = 0; str[i]; i++)
    {
        if (str[i] < 32)
        {
            str[i] = '_';
            change = 1;
        }
    }

    return change;
}

//---------------------------------------------------
// E-mail check: return 0 (not correct) or 1 (valid).
//---------------------------------------------------
int e_mail_check (unsigned char *email)
{
    char ch;
    unsigned char *last_arobas;

    // athena limits
    if (strlen (email) < 3 || strlen (email) > 39)
        return 0;

    // part of RFC limits (official reference of e-mail description)
    if (strchr (email, '@') == NULL || email[strlen (email) - 1] == '@')
        return 0;

    if (email[strlen (email) - 1] == '.')
        return 0;

    last_arobas = strrchr (email, '@');

    if (strstr (last_arobas, "@.") != NULL ||
        strstr (last_arobas, "..") != NULL)
        return 0;

    for (ch = 1; ch < 32; ch++)
    {
        if (strchr (last_arobas, ch) != NULL)
        {
            return 0;
            break;
        }
    }

    if (strchr (last_arobas, ' ') != NULL ||
        strchr (last_arobas, ';') != NULL)
        return 0;

    // all correct
    return 1;
}

//-----------------------------------------------
// Search an account id
//   (return account index or -1 (if not found))
//   If exact account name is not found,
//   the function checks without case sensitive
//   and returns index if only 1 account is found
//   and similar to the searched name.
//-----------------------------------------------
int search_account_index (char *account_name)
{
    int  i, quantity, index;

    quantity = 0;
    index = -1;
    for (i = 0; i < auth_num; i++)
    {
        // Without case sensitive check (increase the number of similar account names found)
        if (stricmp (auth_dat[i].userid, account_name) == 0)
        {
            // Strict comparison (if found, we finish the function immediatly with correct value)
            if (strcmp (auth_dat[i].userid, account_name) == 0)
                return i;
            quantity++;
            index = i;
        }
    }
    // Here, the exact account name is not found
    // We return the found index of a similar account ONLY if there is 1 similar account
    if (quantity == 1)
        return index;

    // Exact account name is not found and 0 or more than 1 similar accounts have been found ==> we say not found
    return -1;
}

//--------------------------------------------------------
// Create a string to save the account in the account file
//--------------------------------------------------------
int mmo_auth_tostr (char *str, struct auth_dat *p)
{
    int  i;
    char *str_p = str;

    str_p += sprintf (str_p, "%d\t%s\t%s\t%s\t%c\t%d\t%d\t"
                      "%s\t%s\t%ld\t%s\t%s\t%ld\t",
                      p->account_id, p->userid, p->pass, p->lastlogin,
                      (p->sex == 2) ? 'S' : (p->sex ? 'M' : 'F'),
                      p->logincount, p->state,
                      p->email, p->error_message,
                      p->connect_until_time, p->last_ip, p->memo,
                      p->ban_until_time);

    for (i = 0; i < p->account_reg2_num; i++)
        if (p->account_reg2[i].str[0])
            str_p +=
                sprintf (str_p, "%s,%d ", p->account_reg2[i].str,
                         p->account_reg2[i].value);

    return 0;
}

//---------------------------------
// Reading of the accounts database
//---------------------------------
int mmo_auth_init (void)
{
    FILE *fp;
    int  account_id, logincount, state, n, i, j, v;
    char line[2048], *p, userid[2048], pass[2048], lastlogin[2048], sex,
        email[2048], error_message[2048], last_ip[2048], memo[2048];
    time_t ban_until_time;
    time_t connect_until_time;
    char str[2048];
    int  GM_count = 0;
    int  server_count = 0;

    auth_dat = calloc (sizeof (struct auth_dat) * 256, 1);
    auth_max = 256;

    fp = fopen_ (account_filename, "r");
    if (fp == NULL)
    {
        // no account file -> no account -> no login, including char-server (ERROR)
        printf
            ("\033[1;31mmmo_auth_init: Accounts file [%s] not found.\033[0m\n",
             account_filename);
        return 0;
    }

    while (fgets (line, sizeof (line) - 1, fp) != NULL)
    {
        if (line[0] == '/' && line[1] == '/')
            continue;
        line[sizeof (line) - 1] = '\0';
        p = line;

        // database version reading (v2)
        if (((i = sscanf (line, "%d\t%[^\t]\t%[^\t]\t%[^\t]\t%c\t%d\t%d\t"
                          "%[^\t]\t%[^\t]\t%ld\t%[^\t]\t%[^\t]\t%ld%n",
                          &account_id, userid, pass, lastlogin, &sex,
                          &logincount, &state, email, error_message,
                          &connect_until_time, last_ip, memo, &ban_until_time,
                          &n)) == 13 && line[n] == '\t')
            ||
            ((i =
              sscanf (line,
                      "%d\t%[^\t]\t%[^\t]\t%[^\t]\t%c\t%d\t%d\t"
                      "%[^\t]\t%[^\t]\t%ld\t%[^\t]\t%[^\t]%n", &account_id,
                      userid, pass, lastlogin, &sex, &logincount, &state,
                      email, error_message, &connect_until_time, last_ip,
                      memo, &n)) == 12 && line[n] == '\t'))
        {
            n = n + 1;

            // Some checks
            if (account_id > END_ACCOUNT_NUM)
            {
                printf
                    ("\033[1;31mmmo_auth_init: ******Error: an account has an id higher than %d\n",
                     END_ACCOUNT_NUM);
                printf
                    ("               account id #%d -> account not read (saved in log file).\033[0m\n",
                     account_id);
                login_log
                    ("mmmo_auth_init: ******Error: an account has an id higher than %d."
                     RETCODE, END_ACCOUNT_NUM);
                login_log
                    ("               account id #%d -> account not read (saved in next line):"
                     RETCODE, account_id);
                login_log ("%s", line);
                continue;
            }
            userid[23] = '\0';
            remove_control_chars (userid);
            for (j = 0; j < auth_num; j++)
            {
                if (auth_dat[j].account_id == account_id)
                {
                    printf
                        ("\033[1;31mmmo_auth_init: ******Error: an account has an identical id to another.\n");
                    printf
                        ("               account id #%d -> new account not read (saved in log file).\033[0m\n",
                         account_id);
                    login_log
                        ("mmmo_auth_init: ******Error: an account has an identical id to another."
                         RETCODE);
                    login_log
                        ("               account id #%d -> new account not read (saved in next line):"
                         RETCODE, account_id);
                    login_log ("%s", line);
                    break;
                }
                else if (strcmp (auth_dat[j].userid, userid) == 0)
                {
                    printf
                        ("\033[1;31mmmo_auth_init: ******Error: account name already exists.\n");
                    printf ("               account name '%s' -> new account not read.\n", userid); // 2 lines, account name can be long.
                    printf
                        ("               Account saved in log file.\033[0m\n");
                    login_log
                        ("mmmo_auth_init: ******Error: an account has an identical id to another."
                         RETCODE);
                    login_log
                        ("               account id #%d -> new account not read (saved in next line):"
                         RETCODE, account_id);
                    login_log ("%s", line);
                    break;
                }
            }
            if (j != auth_num)
                continue;

            if (auth_num >= auth_max)
            {
                auth_max += 256;
                auth_dat =
                    realloc (auth_dat, sizeof (struct auth_dat) * auth_max);
            }

            memset (&auth_dat[auth_num], '\0', sizeof (struct auth_dat));

            auth_dat[auth_num].account_id = account_id;

            strncpy (auth_dat[auth_num].userid, userid, 24);

            memo[254] = '\0';
            remove_control_chars (memo);
            strncpy (auth_dat[auth_num].memo, memo, 255);

            pass[39] = '\0';
            remove_control_chars (pass);
            // If a password is not encrypted, we encrypt it now.
	    // A password beginning with ! and - in the memo field is our magic
	    if (pass[0] != '!' && memo[0] == '-') {
		strcpy(auth_dat[auth_num].pass, MD5_saltcrypt(pass, make_salt()));
		auth_dat[auth_num].memo[0] = '!';
		printf("encrypting pass: %s %s\n", pass, auth_dat[auth_num].pass);
	    }
	    else
		strcpy(auth_dat[auth_num].pass, pass);

            lastlogin[23] = '\0';
            remove_control_chars (lastlogin);
            strncpy (auth_dat[auth_num].lastlogin, lastlogin, 24);

            auth_dat[auth_num].sex = (sex == 'S'
                                      || sex == 's') ? 2 : (sex == 'M'
                                                            || sex == 'm');

            if (logincount >= 0)
                auth_dat[auth_num].logincount = logincount;
            else
                auth_dat[auth_num].logincount = 0;

            if (state > 255)
                auth_dat[auth_num].state = 100;
            else if (state < 0)
                auth_dat[auth_num].state = 0;
            else
                auth_dat[auth_num].state = state;

            if (e_mail_check (email) == 0)
            {
                printf
                    ("Account %s (%d): invalid e-mail (replaced par a@a.com).\n",
                     auth_dat[auth_num].userid,
                     auth_dat[auth_num].account_id);
                strncpy (auth_dat[auth_num].email, "a@a.com", 40);
            }
            else
            {
                remove_control_chars (email);
                strncpy (auth_dat[auth_num].email, email, 40);
            }

            error_message[19] = '\0';
            remove_control_chars (error_message);
            if (error_message[0] == '\0' || state != 7)
            {                   // 7, because state is packet 0x006a value + 1
                strncpy (auth_dat[auth_num].error_message, "-", 20);
            }
            else
            {
                strncpy (auth_dat[auth_num].error_message, error_message, 20);
            }

            if (i == 13)
                auth_dat[auth_num].ban_until_time = ban_until_time;
            else
                auth_dat[auth_num].ban_until_time = 0;

            auth_dat[auth_num].connect_until_time = connect_until_time;

            last_ip[15] = '\0';
            remove_control_chars (last_ip);
            strncpy (auth_dat[auth_num].last_ip, last_ip, 16);

            for (j = 0; j < ACCOUNT_REG2_NUM; j++)
            {
                p += n;
                if (sscanf (p, "%[^\t,],%d %n", str, &v, &n) != 2)
                {
                    // We must check if a str is void. If it's, we can continue to read other REG2.
                    // Account line will have something like: str2,9 ,9 str3,1 (here, ,9 is not good)
                    if (p[0] == ',' && sscanf (p, ",%d %n", &v, &n) == 1)
                    {
                        j--;
                        continue;
                    }
                    else
                        break;
                }
                str[31] = '\0';
                remove_control_chars (str);
                strncpy (auth_dat[auth_num].account_reg2[j].str, str, 32);
                auth_dat[auth_num].account_reg2[j].value = v;
            }
            auth_dat[auth_num].account_reg2_num = j;

            if (isGM (account_id) > 0)
                GM_count++;
            if (auth_dat[auth_num].sex == 2)
                server_count++;

            auth_num++;
            if (account_id >= account_id_count)
                account_id_count = account_id + 1;

            // Old athena database version reading (v1)
        }
        else if ((i =
                  sscanf (line, "%d\t%[^\t]\t%[^\t]\t%[^\t]\t%c\t%d\t%d\t%n",
                          &account_id, userid, pass, lastlogin, &sex,
                          &logincount, &state, &n)) >= 5)
        {
            if (account_id > END_ACCOUNT_NUM)
            {
                printf
                    ("\033[1;31mmmo_auth_init: ******Error: an account has an id higher than %d\n",
                     END_ACCOUNT_NUM);
                printf
                    ("               account id #%d -> account not read (saved in log file).\033[0m\n",
                     account_id);
                login_log
                    ("mmmo_auth_init: ******Error: an account has an id higher than %d."
                     RETCODE, END_ACCOUNT_NUM);
                login_log
                    ("               account id #%d -> account not read (saved in next line):"
                     RETCODE, account_id);
                login_log ("%s", line);
                continue;
            }
            userid[23] = '\0';
            remove_control_chars (userid);
            for (j = 0; j < auth_num; j++)
            {
                if (auth_dat[j].account_id == account_id)
                {
                    printf
                        ("\033[1;31mmmo_auth_init: ******Error: an account has an identical id to another.\n");
                    printf
                        ("               account id #%d -> new account not read (saved in log file).\033[0m\n",
                         account_id);
                    login_log
                        ("mmmo_auth_init: ******Error: an account has an identical id to another."
                         RETCODE);
                    login_log
                        ("               account id #%d -> new account not read (saved in next line):"
                         RETCODE, account_id);
                    login_log ("%s", line);
                    break;
                }
                else if (strcmp (auth_dat[j].userid, userid) == 0)
                {
                    printf
                        ("\033[1;31mmmo_auth_init: ******Error: account name already exists.\n");
                    printf ("               account name '%s' -> new account not read.\n", userid); // 2 lines, account name can be long.
                    printf
                        ("               Account saved in log file.\033[0m\n");
                    login_log
                        ("mmmo_auth_init: ******Error: an account has an identical id to another."
                         RETCODE);
                    login_log
                        ("               account id #%d -> new account not read (saved in next line):"
                         RETCODE, account_id);
                    login_log ("%s", line);
                    break;
                }
            }
            if (j != auth_num)
                continue;

            if (auth_num >= auth_max)
            {
                auth_max += 256;
                auth_dat =
                    realloc (auth_dat, sizeof (struct auth_dat) * auth_max);
            }

            memset (&auth_dat[auth_num], '\0', sizeof (struct auth_dat));

            auth_dat[auth_num].account_id = account_id;

            strncpy (auth_dat[auth_num].userid, userid, 24);

            lastlogin[23] = '\0';
            remove_control_chars (lastlogin);
            strncpy (auth_dat[auth_num].lastlogin, lastlogin, 24);

            auth_dat[auth_num].sex = (sex == 'S'
                                      || sex == 's') ? 2 : (sex == 'M'
                                                            || sex == 'm');

            if (i >= 6)
            {
                if (logincount >= 0)
                    auth_dat[auth_num].logincount = logincount;
                else
                    auth_dat[auth_num].logincount = 0;
            }
            else
                auth_dat[auth_num].logincount = 0;

            if (i >= 7)
            {
                if (state > 255)
                    auth_dat[auth_num].state = 100;
                else if (state < 0)
                    auth_dat[auth_num].state = 0;
                else
                    auth_dat[auth_num].state = state;
            }
            else
                auth_dat[auth_num].state = 0;

            // Initialization of new data
            strncpy (auth_dat[auth_num].email, "a@a.com", 40);
            strncpy (auth_dat[auth_num].error_message, "-", 20);
            auth_dat[auth_num].ban_until_time = 0;
            auth_dat[auth_num].connect_until_time = 0;
            strncpy (auth_dat[auth_num].last_ip, "-", 16);
            strncpy (auth_dat[auth_num].memo, "!", 255);

            for (j = 0; j < ACCOUNT_REG2_NUM; j++)
            {
                p += n;
                if (sscanf (p, "%[^\t,],%d %n", str, &v, &n) != 2)
                {
                    // We must check if a str is void. If it's, we can continue to read other REG2.
                    // Account line will have something like: str2,9 ,9 str3,1 (here, ,9 is not good)
                    if (p[0] == ',' && sscanf (p, ",%d %n", &v, &n) == 1)
                    {
                        j--;
                        continue;
                    }
                    else
                        break;
                }
                str[31] = '\0';
                remove_control_chars (str);
                strncpy (auth_dat[auth_num].account_reg2[j].str, str, 32);
                auth_dat[auth_num].account_reg2[j].value = v;
            }
            auth_dat[auth_num].account_reg2_num = j;

            if (isGM (account_id) > 0)
                GM_count++;
            if (auth_dat[auth_num].sex == 2)
                server_count++;

            auth_num++;
            if (account_id >= account_id_count)
                account_id_count = account_id + 1;

        }
        else
        {
            i = 0;
            if (sscanf (line, "%d\t%%newid%%\n%n", &account_id, &i) == 1 &&
                i > 0 && account_id > account_id_count)
                account_id_count = account_id;
        }
    }
    fclose_ (fp);

    if (auth_num == 0)
    {
        printf ("mmo_auth_init: No account found in %s.\n", account_filename);
        sprintf (line, "No account found in %s.", account_filename);
    }
    else
    {
        if (auth_num == 1)
        {
            printf ("mmo_auth_init: 1 account read in %s,\n",
                    account_filename);
            sprintf (line, "1 account read in %s,", account_filename);
        }
        else
        {
            printf ("mmo_auth_init: %d accounts read in %s,\n", auth_num,
                    account_filename);
            sprintf (line, "%d accounts read in %s,", auth_num,
                     account_filename);
        }
        if (GM_count == 0)
        {
            printf ("               of which is no GM account, and ");
            sprintf (str, "%s of which is no GM account and", line);
        }
        else if (GM_count == 1)
        {
            printf ("               of which is 1 GM account, and ");
            sprintf (str, "%s of which is 1 GM account and", line);
        }
        else
        {
            printf ("               of which is %d GM accounts, and ",
                    GM_count);
            sprintf (str, "%s of which is %d GM accounts and", line,
                     GM_count);
        }
        if (server_count == 0)
        {
            printf ("no server account ('S').\n");
            sprintf (line, "%s no server account ('S').", str);
        }
        else if (server_count == 1)
        {
            printf ("1 server account ('S').\n");
            sprintf (line, "%s 1 server account ('S').", str);
        }
        else
        {
            printf ("%d server accounts ('S').\n", server_count);
            sprintf (line, "%s %d server accounts ('S').", str, server_count);
        }
    }
    login_log ("%s" RETCODE, line);

    return 0;
}

//------------------------------------------
// Writing of the accounts database file
//   (accounts are sorted by id before save)
//------------------------------------------
void mmo_auth_sync (void)
{
    FILE *fp;
    int  i, j, k, lock;
    int  id[auth_num];
    char line[65536];

    // Sorting before save
    for (i = 0; i < auth_num; i++)
    {
        id[i] = i;
        for (j = 0; j < i; j++)
        {
            if (auth_dat[i].account_id < auth_dat[id[j]].account_id)
            {
                for (k = i; k > j; k--)
                    id[k] = id[k - 1];
                id[j] = i;      // id[i]
                break;
            }
        }
    }

    // Data save
    fp = lock_fopen (account_filename, &lock);
    if (fp == NULL)
        return;
    fprintf (fp,
             "// Accounts file: here are saved all information about the accounts.\n");
    fprintf (fp,
             "// Structure: ID, account name, password, last login time, sex, # of logins, state, email, error message for state 7, validity time, last (accepted) login ip, memo field, ban timestamp, repeated(register text, register value)\n");
    fprintf (fp, "// Some explanations:\n");
    fprintf (fp,
             "//   account name    : between 4 to 23 char for a normal account (standard client can't send less than 4 char).\n");
    fprintf (fp, "//   account password: between 4 to 23 char\n");
    fprintf (fp,
             "//   sex             : M or F for normal accounts, S for server accounts\n");
    fprintf (fp,
             "//   state           : 0: account is ok, 1 to 256: error code of packet 0x006a + 1\n");
    fprintf (fp,
             "//   email           : between 3 to 39 char (a@a.com is like no email)\n");
    fprintf (fp,
             "//   error message   : text for the state 7: 'Your are Prohibited to login until <text>'. Max 19 char\n");
    fprintf (fp,
             "//   valitidy time   : 0: unlimited account, <other value>: date calculated by addition of 1/1/1970 + value (number of seconds since the 1/1/1970)\n");
    fprintf (fp, "//   memo field      : max 254 char\n");
    fprintf (fp,
             "//   ban time        : 0: no ban, <other value>: banned until the date: date calculated by addition of 1/1/1970 + value (number of seconds since the 1/1/1970)\n");
    for (i = 0; i < auth_num; i++)
    {
        k = id[i];              // use of sorted index
        if (auth_dat[k].account_id < 0)
            continue;

        mmo_auth_tostr (line, &auth_dat[k]);
        fprintf (fp, "%s" RETCODE, line);
    }
    fprintf (fp, "%d\t%%newid%%\n", account_id_count);

    lock_fclose (fp, account_filename, &lock);

    return;
}

// We want to sync the DB to disk as little as possible as it's fairly 
// resource intensive. therefore most player-triggerable events that
// update the account DB will not immideately trigger a save. Instead
// we save periodicly on a timer.
//-----------------------------------------------------
int check_auth_sync (int tid, unsigned int tick, int id, int data)
{
    mmo_auth_sync ();
    return 0;
}

//--------------------------------------------------------------------
// Packet send to all char-servers, except one (wos: without our self)
//--------------------------------------------------------------------
int charif_sendallwos (int sfd, unsigned char *buf, unsigned int len)
{
    int  i, c;

    for (i = 0, c = 0; i < MAX_SERVERS; i++)
    {
        int  fd;
        if ((fd = server_fd[i]) >= 0 && fd != sfd)
        {
            memcpy (WFIFOP (fd, 0), buf, len);
            WFIFOSET (fd, len);
            c++;
        }
    }
    return c;
}

//-----------------------------------------------------
// Send GM accounts to all char-server
//-----------------------------------------------------
void send_GM_accounts ()
{
    int  i;
    char buf[32000];
    int  GM_value;
    int  len;

    len = 4;
    WBUFW (buf, 0) = 0x2732;
    for (i = 0; i < auth_num; i++)
        // send only existing accounts. We can not create a GM account when server is online.
        if ((GM_value = isGM (auth_dat[i].account_id)) > 0)
        {
            WBUFL (buf, len) = auth_dat[i].account_id;
            WBUFB (buf, len + 4) = (unsigned char) GM_value;
            len += 5;
        }
    WBUFW (buf, 2) = len;
    charif_sendallwos (-1, buf, len);

    return;
}

//-----------------------------------------------------
// Check if GM file account have been changed
//-----------------------------------------------------
int check_GM_file (int tid, unsigned int tick, int id, int data)
{
    struct stat file_stat;
    long new_time;

    // if we would not check
    if (gm_account_filename_check_timer < 1)
        return 0;

    // get last modify time/date
    if (stat (GM_account_filename, &file_stat))
        new_time = 0;           // error
    else
        new_time = file_stat.st_mtime;

    if (new_time != creation_time_GM_account_file)
    {
        read_gm_account ();
        send_GM_accounts ();
    }

    return 0;
}

//-------------------------------------
// Account creation (with e-mail check)
//-------------------------------------
int mmo_auth_new (struct mmo_account *account, char sex, char *email)
{
    time_t timestamp, timestamp_temp;
    struct tm *tmtime;
    int  i = auth_num;

    if (auth_num >= auth_max)
    {
        auth_max += 256;
        auth_dat = realloc (auth_dat, sizeof (struct auth_dat) * auth_max);
    }

    memset (&auth_dat[i], '\0', sizeof (struct auth_dat));

    while (isGM (account_id_count) > 0)
        account_id_count++;

    auth_dat[i].account_id = account_id_count++;

    strncpy (auth_dat[i].userid, account->userid, 24);
    auth_dat[i].userid[23] = '\0';

    strcpy(auth_dat[i].pass, MD5_saltcrypt(account->passwd, make_salt()));
    auth_dat[i].pass[39] = '\0';

    memcpy (auth_dat[i].lastlogin, "-", 2);

    auth_dat[i].sex = (sex == 'M');

    auth_dat[i].logincount = 0;

    auth_dat[i].state = 0;

    if (e_mail_check (email) == 0)
        strncpy (auth_dat[i].email, "a@a.com", 40);
    else
        strncpy (auth_dat[i].email, email, 40);

    strncpy (auth_dat[i].error_message, "-", 20);

    auth_dat[i].ban_until_time = 0;

    if (start_limited_time < 0)
        auth_dat[i].connect_until_time = 0; // unlimited
    else
    {                           // limited time
        timestamp = time (NULL) + start_limited_time;
        // double conversion to be sure that it is possible
        tmtime = gmtime (&timestamp);
        timestamp_temp = mktime (tmtime);
        if (timestamp_temp != -1 && (timestamp_temp + 3600) >= timestamp)   // check possible value and overflow (and avoid summer/winter hour)
            auth_dat[i].connect_until_time = timestamp_temp;
        else
            auth_dat[i].connect_until_time = 0; // unlimited
    }

    strncpy (auth_dat[i].last_ip, "-", 16);

    strncpy (auth_dat[i].memo, "!", 255);

    auth_dat[i].account_reg2_num = 0;

    auth_num++;

    return (account_id_count - 1);
}

//---------------------------------------
// Check/authentification of a connection
//---------------------------------------
int mmo_auth (struct mmo_account *account, int fd)
{
    int  i;
    struct timeval tv;
    char tmpstr[256];
    int  len, newaccount = 0;
#ifdef PASSWDENC
    char md5str[64], md5bin[32];
#endif
    char ip[16];
    unsigned char *sin_addr =
        (unsigned char *) &session[fd]->client_addr.sin_addr;

    sprintf (ip, "%d.%d.%d.%d", sin_addr[0], sin_addr[1], sin_addr[2],
             sin_addr[3]);

    len = strlen (account->userid) - 2;
    // Account creation with _M/_F
    if (account->passwdenc == 0 && account->userid[len] == '_' &&
        (account->userid[len + 1] == 'F' || account->userid[len + 1] == 'M')
        && new_account_flag == 1 && account_id_count <= END_ACCOUNT_NUM
        && len >= 4 && strlen (account->passwd) >= 4)
    {
        if (new_account_flag == 1)
            newaccount = 1;
        account->userid[len] = '\0';
    }

    // Strict account search
    for (i = 0; i < auth_num; i++)
    {
        if (strcmp (account->userid, auth_dat[i].userid) == 0)
            break;
    }
    // if there is no creation request and strict account search fails, we do a no sensitive case research for index
    if (newaccount == 0 && i == auth_num)
    {
        i = search_account_index (account->userid);
        if (i == -1)
            i = auth_num;
        else
            memcpy (account->userid, auth_dat[i].userid, 24);   // for the possible tests/checks afterwards (copy correcte sensitive case).
    }

    if (i != auth_num)
    {
        int  encpasswdok = 0;
        struct login_session_data *ld;
        if (newaccount)
        {
            login_log
                ("Attempt of creation of an already existant account (account: %s_%c, ip: %s)"
                 RETCODE, account->userid, account->userid[len + 1], ip);
            return 9;           // 9 = Account already exists
        }
        ld = session[fd]->session_data;
#ifdef PASSWORDENC
        if (account->passwdenc > 0)
        {
            int  j = account->passwdenc;
            if (!ld)
            {
                login_log ("Md5 key not created (account: %s, ip: %s)"
                           RETCODE, account->userid, ip);
                return 1;       // 1 = Incorrect Password
            }
            if (j > 2)
                j = 1;
            do
            {
                if (j == 1)
                {
                    strncpy (md5str, ld->md5key, sizeof (ld->md5key));  // 20
                    strcat (md5str, auth_dat[i].pass);  // 24
                }
                else if (j == 2)
                {
                    strncpy (md5str, auth_dat[i].pass, sizeof (auth_dat[i].pass));  // 24
                    strcat (md5str, ld->md5key);    // 20
                }
                else
                    md5str[0] = '\0';
                md5str[sizeof (md5str) - 1] = '\0'; // 64
                MD5_String2binary (md5str, md5bin);
                encpasswdok = (memcmp (account->passwd, md5bin, 16) == 0);
            }
            while (j < 2 && !encpasswdok && (j++) != account->passwdenc);
//          printf("key[%s] md5 [%s] ", md5key, md5);
//          printf("client [%s] accountpass [%s]\n", account->passwd, auth_dat[i].pass);
        }
#endif
        if ((!pass_ok (account->passwd, auth_dat[i].pass)) && !encpasswdok)
        {
            if (account->passwdenc == 0)
                login_log
                    ("Invalid password (account: %s, ip: %s)"
                     RETCODE, account->userid, ip);

#ifdef PASSWORDENC
            else
            {
                char logbuf[512], *p = logbuf;
                int  j;
                p += sprintf (p,
                              "Invalid password (account: %s, received md5[",
                              account->userid);
                for (j = 0; j < 16; j++)
                    p += sprintf (p, "%02x",
                                  ((unsigned char *) account->passwd)[j]);
                p += sprintf (p, "] calculated md5[");
                for (j = 0; j < 16; j++)
                    p += sprintf (p, "%02x", ((unsigned char *) md5bin)[j]);
                p += sprintf (p, "] md5 key[");
                for (j = 0; j < ld->md5keylen; j++)
                    p += sprintf (p, "%02x",
                                  ((unsigned char *) ld->md5key)[j]);
                p += sprintf (p, "], ip: %s)" RETCODE, ip);
                login_log (logbuf);
            }
#endif
            return 1;           // 1 = Incorrect Password
        }

        if (auth_dat[i].state)
        {
            login_log
                ("Connection refused (account: %s, state: %d, ip: %s)"
                 RETCODE, account->userid, auth_dat[i].state,
                 ip);
            switch (auth_dat[i].state)
            {                   // packet 0x006a value + 1
                case 1:        // 0 = Unregistered ID
                case 2:        // 1 = Incorrect Password
                case 3:        // 2 = This ID is expired
                case 4:        // 3 = Rejected from Server
                case 5:        // 4 = You have been blocked by the GM Team
                case 6:        // 5 = Your Game's EXE file is not the latest version
                case 7:        // 6 = Your are Prohibited to log in until %s
                case 8:        // 7 = Server is jammed due to over populated
                case 9:        // 8 = No MSG (actually, all states after 9 except 99 are No MSG, use only this)
                case 100:      // 99 = This ID has been totally erased
                    return auth_dat[i].state - 1;
                    break;
                default:
                    return 99;  // 99 = ID has been totally erased
                    break;
            }
        }

        if (auth_dat[i].ban_until_time != 0)
        {                       // if account is banned
            strftime (tmpstr, 20, date_format,
                      gmtime (&auth_dat[i].ban_until_time));
            tmpstr[19] = '\0';
            if (auth_dat[i].ban_until_time > time (NULL))
            {                   // always banned
                login_log
                    ("Connection refused (account: %s, banned until %s, ip: %s)"
                     RETCODE, account->userid, tmpstr, ip);
                return 6;       // 6 = Your are Prohibited to log in until %s
            }
            else
            {                   // ban is finished
                login_log
                    ("End of ban (account: %s, previously banned until %s -> not more banned, ip: %s)"
                     RETCODE, account->userid, tmpstr, ip);
                auth_dat[i].ban_until_time = 0; // reset the ban time
            }
        }

        if (auth_dat[i].connect_until_time != 0
            && auth_dat[i].connect_until_time < time (NULL))
        {
            login_log
                ("Connection refused (account: %s, expired ID, ip: %s)"
                 RETCODE, account->userid, ip);
            return 2;           // 2 = This ID is expired
        }

        login_log ("Authentification accepted (account: %s (id: %d), ip: %s)"
                   RETCODE, account->userid, auth_dat[i].account_id, ip);
    }
    else
    {
        if (newaccount == 0)
        {
            login_log
                ("Unknown account (account: %s, ip: %s)"
                 RETCODE, account->userid, ip);
            return 0;           // 0 = Unregistered ID
        }
        else
        {
            int  new_id =
                mmo_auth_new (account, account->userid[len + 1], "a@a.com");
            login_log
                ("Account creation and authentification accepted (account %s (id: %d), sex: %c, connection with _F/_M, ip: %s)"
                 RETCODE, account->userid, new_id,
                 account->userid[len + 1], ip);
        }
    }

    gettimeofday (&tv, NULL);
    strftime (tmpstr, 24, date_format, gmtime (&(tv.tv_sec)));
    sprintf (tmpstr + strlen (tmpstr), ".%03d", (int) tv.tv_usec / 1000);

    account->account_id = auth_dat[i].account_id;
    account->login_id1 = mt_random ();
    account->login_id2 = mt_random ();
    memcpy (account->lastlogin, auth_dat[i].lastlogin, 24);
    memcpy (auth_dat[i].lastlogin, tmpstr, 24);
    account->sex = auth_dat[i].sex;
    strncpy (auth_dat[i].last_ip, ip, 16);
    auth_dat[i].logincount++;

    return -1;                  // account OK
}

//-------------------------------
// Char-server anti-freeze system
//-------------------------------
int char_anti_freeze_system (int tid, unsigned int tick, int id, int data)
{
    int  i;

    //printf("Entering in char_anti_freeze_system function to check freeze of servers.\n");
    for (i = 0; i < MAX_SERVERS; i++)
    {
        if (server_fd[i] >= 0)
        {                       // if char-server is online
            //printf("char_anti_freeze_system: server #%d '%s', flag: %d.\n", i, server[i].name, server_freezeflag[i]);
            if (server_freezeflag[i]-- < 1)
            {                   // Char-server anti-freeze system. Counter. 5 ok, 4...0 freezed
                printf
                    ("Char-server anti-freeze system: char-server #%d '%s' is freezed -> disconnection.\n",
                     i, server[i].name);
                login_log
                    ("Char-server anti-freeze system: char-server #%d '%s' is freezed -> disconnection."
                     RETCODE, i, server[i].name);
                session[server_fd[i]]->eof = 1;
            }
        }
    }

    return 0;
}

//--------------------------------
// Packet parsing for char-servers
//--------------------------------
int parse_fromchar (int fd)
{
    int  i, j, id;
    unsigned char *p = (unsigned char *) &session[fd]->client_addr.sin_addr;
    char ip[16];

    sprintf (ip, "%d.%d.%d.%d", p[0], p[1], p[2], p[3]);

    for (id = 0; id < MAX_SERVERS; id++)
        if (server_fd[id] == fd)
            break;
    if (id == MAX_SERVERS || session[fd]->eof)
    {
        if (id < MAX_SERVERS)
        {
            printf ("Char-server '%s' has disconnected.\n", server[id].name);
            login_log ("Char-server '%s' has disconnected (ip: %s)." RETCODE,
                       server[id].name, ip);
            server_fd[id] = -1;
            memset (&server[id], 0, sizeof (struct mmo_char_server));
        }
        close (fd);
        delete_session (fd);
        return 0;
    }

    while (RFIFOREST (fd) >= 2)
    {
        if (display_parse_fromchar == 2 || (display_parse_fromchar == 1 && RFIFOW (fd, 0) != 0x2714))   // 0x2714 is done very often (number of players)
            printf
                ("parse_fromchar: connection #%d, packet: 0x%x (with being read: %d bytes).\n",
                 fd, RFIFOW (fd, 0), RFIFOREST (fd));

        switch (RFIFOW (fd, 0))
        {
                // request from map-server via char-server to reload GM accounts (by Yor).
            case 0x2709:
                login_log
                    ("Char-server '%s': Request to re-load GM configuration file (ip: %s)."
                     RETCODE, server[id].name, ip);
                read_gm_account ();
                // send GM accounts to all char-servers
                send_GM_accounts ();
                RFIFOSKIP (fd, 2);
                break;

            case 0x2712:       // request from char-server to authentify an account
                if (RFIFOREST (fd) < 19)
                    return 0;
                {
                    int  acc;
                    acc = RFIFOL (fd, 2);   // speed up
                    for (i = 0; i < AUTH_FIFO_SIZE; i++)
                    {
                        if (auth_fifo[i].account_id == acc &&
                            auth_fifo[i].login_id1 == RFIFOL (fd, 6) &&
#if CMP_AUTHFIFO_LOGIN2 != 0
                            auth_fifo[i].login_id2 == RFIFOL (fd, 10) &&    // relate to the versions higher than 18
#endif
                            auth_fifo[i].sex == RFIFOB (fd, 14) &&
                            (!check_ip_flag
                             || auth_fifo[i].ip == RFIFOL (fd, 15))
                            && !auth_fifo[i].delflag)
                        {
                            int  p, k;
                            auth_fifo[i].delflag = 1;
                            login_log
                                ("Char-server '%s': authentification of the account %d accepted (ip: %s)."
                                 RETCODE, server[id].name, acc, ip);
//                  printf("%d\n", i);
                            for (k = 0; k < auth_num; k++)
                            {
                                if (auth_dat[k].account_id == acc)
                                {
                                    WFIFOW (fd, 0) = 0x2729;    // Sending of the account_reg2
                                    WFIFOL (fd, 4) = acc;
                                    for (p = 8, j = 0;
                                         j < auth_dat[k].account_reg2_num;
                                         p += 36, j++)
                                    {
                                        memcpy (WFIFOP (fd, p),
                                                auth_dat[k].
                                                account_reg2[j].str, 32);
                                        WFIFOL (fd, p + 32) =
                                            auth_dat[k].account_reg2[j].value;
                                    }
                                    WFIFOW (fd, 2) = p;
                                    WFIFOSET (fd, p);
//                          printf("parse_fromchar: Sending of account_reg2: login->char (auth fifo)\n");
                                    WFIFOW (fd, 0) = 0x2713;
                                    WFIFOL (fd, 2) = acc;
                                    WFIFOB (fd, 6) = 0;
                                    memcpy (WFIFOP (fd, 7), auth_dat[k].email,
                                            40);
                                    WFIFOL (fd, 47) =
                                        (unsigned long)
                                        auth_dat[k].connect_until_time;
                                    WFIFOSET (fd, 51);
                                    break;
                                }
                            }
                            break;
                        }
                    }
                    // authentification not found
                    if (i == AUTH_FIFO_SIZE)
                    {
                        login_log
                            ("Char-server '%s': authentification of the account %d REFUSED (ip: %s)."
                             RETCODE, server[id].name, acc, ip);
                        WFIFOW (fd, 0) = 0x2713;
                        WFIFOL (fd, 2) = acc;
                        WFIFOB (fd, 6) = 1;
                        // It is unnecessary to send email
                        // It is unnecessary to send validity date of the account
                        WFIFOSET (fd, 51);
                    }
                }
                RFIFOSKIP (fd, 19);
                break;

            case 0x2714:
                if (RFIFOREST (fd) < 6)
                    return 0;
                //printf("parse_fromchar: Receiving of the users number of the server '%s': %d\n", server[id].name, RFIFOL(fd,2));
                server[id].users = RFIFOL (fd, 2);
                if (anti_freeze_enable)
                    server_freezeflag[id] = 5;  // Char anti-freeze system. Counter. 5 ok, 4...0 freezed
                RFIFOSKIP (fd, 6);
                break;

                // we receive a e-mail creation of an account with a default e-mail (no answer)
            case 0x2715:
            {
                int  acc;
                char email[40];
                if (RFIFOREST (fd) < 46)
                    return 0;
                acc = RFIFOL (fd, 2);   // speed up
                memcpy (email, RFIFOP (fd, 6), 40);
                email[39] = '\0';
                remove_control_chars (email);
                //printf("parse_fromchar: an e-mail creation of an account with a default e-mail: server '%s', account: %d, e-mail: '%s'.\n", server[id].name, acc, RFIFOP(fd,6));
                if (e_mail_check (email) == 0)
                    login_log
                        ("Char-server '%s': Attempt to create an e-mail on an account with a default e-mail REFUSED - e-mail is invalid (account: %d, ip: %s)"
                         RETCODE, server[id].name, acc, ip);
                else
                {
                    for (i = 0; i < auth_num; i++)
                    {
                        if (auth_dat[i].account_id == acc
                            && (strcmp (auth_dat[i].email, "a@a.com") == 0
                                || auth_dat[i].email[0] == '\0'))
                        {
                            memcpy (auth_dat[i].email, email, 40);
                            login_log
                                ("Char-server '%s': Create an e-mail on an account with a default e-mail (account: %d, new e-mail: %s, ip: %s)."
                                 RETCODE, server[id].name, acc, email, ip);
                            break;
                        }
                    }
                    if (i == auth_num)
                        login_log
                            ("Char-server '%s': Attempt to create an e-mail on an account with a default e-mail REFUSED - account doesn't exist or e-mail of account isn't default e-mail (account: %d, ip: %s)."
                             RETCODE, server[id].name, acc, ip);
                }
                RFIFOSKIP (fd, 46);
                break;

                // We receive an e-mail/limited time request, because a player comes back from a map-server to the char-server
            }
            case 0x2716:
                if (RFIFOREST (fd) < 6)
                    return 0;
                //printf("parse_fromchar: E-mail/limited time request from '%s' server (concerned account: %d)\n", server[id].name, RFIFOL(fd,2));
                for (i = 0; i < auth_num; i++)
                {
                    if (auth_dat[i].account_id == RFIFOL (fd, 2))
                    {
                        login_log
                            ("Char-server '%s': e-mail of the account %d found (ip: %s)."
                             RETCODE, server[id].name, RFIFOL (fd, 2), ip);
                        WFIFOW (fd, 0) = 0x2717;
                        WFIFOL (fd, 2) = RFIFOL (fd, 2);
                        memcpy (WFIFOP (fd, 6), auth_dat[i].email, 40);
                        WFIFOL (fd, 46) =
                            (unsigned long) auth_dat[i].connect_until_time;
                        WFIFOSET (fd, 50);
                        break;
                    }
                }
                if (i == auth_num)
                {
                    login_log
                        ("Char-server '%s': e-mail of the account %d NOT found (ip: %s)."
                         RETCODE, server[id].name, RFIFOL (fd, 2), ip);
                }
                RFIFOSKIP (fd, 6);
                break;

            case 0x2720:       // To become GM request
                if (RFIFOREST (fd) < 4 || RFIFOREST (fd) < RFIFOW (fd, 2))
                    return 0;
                {
                    int  acc;
                    unsigned char buf[10];
                    FILE *fp;
                    acc = RFIFOL (fd, 4);
                    //printf("parse_fromchar: Request to become a GM acount from %d account.\n", acc);
                    WBUFW (buf, 0) = 0x2721;
                    WBUFL (buf, 2) = acc;
                    WBUFL (buf, 6) = 0;
                    if (strcmp (RFIFOP (fd, 8), gm_pass) == 0)
                    {
                        // only non-GM can become GM
                        if (isGM (acc) == 0)
                        {
                            // if we autorise creation
                            if (level_new_gm > 0)
                            {
                                // if we can open the file to add the new GM
                                if ((fp =
                                     fopen_ (GM_account_filename,
                                             "a")) != NULL)
                                {
                                    char tmpstr[24];
                                    struct timeval tv;
                                    gettimeofday (&tv, NULL);
                                    strftime (tmpstr, 23, date_format,
                                              gmtime (&(tv.tv_sec)));
                                    fprintf (fp,
                                             RETCODE
                                             "// %s: @GM command on account %d"
                                             RETCODE "%d %d" RETCODE, tmpstr,
                                             acc, acc, level_new_gm);
                                    fclose_ (fp);
                                    WBUFL (buf, 6) = level_new_gm;
                                    read_gm_account ();
                                    send_GM_accounts ();
                                    printf
                                        ("GM Change of the account %d: level 0 -> %d.\n",
                                         acc, level_new_gm);
                                    login_log
                                        ("Char-server '%s': GM Change of the account %d: level 0 -> %d (ip: %s)."
                                         RETCODE, server[id].name, acc,
                                         level_new_gm, ip);
                                }
                                else
                                {
                                    printf
                                        ("Error of GM change (suggested account: %d, correct password, unable to add a GM account in GM accounts file)\n",
                                         acc);
                                    login_log
                                        ("Char-server '%s': Error of GM change (suggested account: %d, correct password, unable to add a GM account in GM accounts file, ip: %s)."
                                         RETCODE, server[id].name, acc, ip);
                                }
                            }
                            else
                            {
                                printf
                                    ("Error of GM change (suggested account: %d, correct password, but GM creation is disable (level_new_gm = 0))\n",
                                     acc);
                                login_log
                                    ("Char-server '%s': Error of GM change (suggested account: %d, correct password, but GM creation is disable (level_new_gm = 0), ip: %s)."
                                     RETCODE, server[id].name, acc, ip);
                            }
                        }
                        else
                        {
                            printf
                                ("Error of GM change (suggested account: %d (already GM), correct password).\n",
                                 acc);
                            login_log
                                ("Char-server '%s': Error of GM change (suggested account: %d (already GM), correct password, ip: %s)."
                                 RETCODE, server[id].name, acc, ip);
                        }
                    }
                    else
                    {
                        printf
                            ("Error of GM change (suggested account: %d, invalid password).\n",
                             acc);
                        login_log
                            ("Char-server '%s': Error of GM change (suggested account: %d, invalid password, ip: %s)."
                             RETCODE, server[id].name, acc, ip);
                    }
                    charif_sendallwos (-1, buf, 10);
                }
                RFIFOSKIP (fd, RFIFOW (fd, 2));
                return 0;

                // Map server send information to change an email of an account via char-server
            case 0x2722:       // 0x2722 <account_id>.L <actual_e-mail>.40B <new_e-mail>.40B
                if (RFIFOREST (fd) < 86)
                    return 0;
                {
                    int  acc;
                    char actual_email[40], new_email[40];
                    acc = RFIFOL (fd, 2);
                    memcpy (actual_email, RFIFOP (fd, 6), 40);
                    actual_email[39] = '\0';
                    remove_control_chars (actual_email);
                    memcpy (new_email, RFIFOP (fd, 46), 40);
                    new_email[39] = '\0';
                    remove_control_chars (new_email);
                    if (e_mail_check (actual_email) == 0)
                        login_log
                            ("Char-server '%s': Attempt to modify an e-mail on an account (@email GM command), but actual email is invalid (account: %d, ip: %s)"
                             RETCODE, server[id].name, acc, ip);
                    else if (e_mail_check (new_email) == 0)
                        login_log
                            ("Char-server '%s': Attempt to modify an e-mail on an account (@email GM command) with a invalid new e-mail (account: %d, ip: %s)"
                             RETCODE, server[id].name, acc, ip);
                    else if (strcmpi (new_email, "a@a.com") == 0)
                        login_log
                            ("Char-server '%s': Attempt to modify an e-mail on an account (@email GM command) with a default e-mail (account: %d, ip: %s)"
                             RETCODE, server[id].name, acc, ip);
                    else
                    {
                        for (i = 0; i < auth_num; i++)
                        {
                            if (auth_dat[i].account_id == acc)
                            {
                                if (strcmpi (auth_dat[i].email, actual_email)
                                    == 0)
                                {
                                    memcpy (auth_dat[i].email, new_email, 40);
                                    login_log
                                        ("Char-server '%s': Modify an e-mail on an account (@email GM command) (account: %d (%s), new e-mail: %s, ip: %s)."
                                         RETCODE, server[id].name, acc,
                                         auth_dat[i].userid, new_email, ip);
                                }
                                else
                                    login_log
                                        ("Char-server '%s': Attempt to modify an e-mail on an account (@email GM command), but actual e-mail is incorrect (account: %d (%s), actual e-mail: %s, proposed e-mail: %s, ip: %s)."
                                         RETCODE, server[id].name, acc,
                                         auth_dat[i].userid,
                                         auth_dat[i].email, actual_email, ip);
                                break;
                            }
                        }
                        if (i == auth_num)
                            login_log
                                ("Char-server '%s': Attempt to modify an e-mail on an account (@email GM command), but account doesn't exist (account: %d, ip: %s)."
                                 RETCODE, server[id].name, acc, ip);
                    }
                }
                RFIFOSKIP (fd, 86);
                break;

                // Receiving of map-server via char-server a status change resquest (by Yor)
            case 0x2724:
                if (RFIFOREST (fd) < 10)
                    return 0;
                {
                    int  acc, statut;
                    acc = RFIFOL (fd, 2);
                    statut = RFIFOL (fd, 6);
                    for (i = 0; i < auth_num; i++)
                    {
                        if (auth_dat[i].account_id == acc)
                        {
                            if (auth_dat[i].state != statut)
                            {
                                login_log
                                    ("Char-server '%s': Status change (account: %d, new status %d, ip: %s)."
                                     RETCODE, server[id].name, acc, statut,
                                     ip);
                                if (statut != 0)
                                {
                                    unsigned char buf[16];
                                    WBUFW (buf, 0) = 0x2731;
                                    WBUFL (buf, 2) = acc;
                                    WBUFB (buf, 6) = 0; // 0: change of statut, 1: ban
                                    WBUFL (buf, 7) = statut;    // status or final date of a banishment
                                    charif_sendallwos (-1, buf, 11);
                                    for (j = 0; j < AUTH_FIFO_SIZE; j++)
                                        if (auth_fifo[j].account_id == acc)
                                            auth_fifo[j].login_id1++;   // to avoid reconnection error when come back from map-server (char-server will ask again the authentification)
                                }
                                auth_dat[i].state = statut;
                                // Save
                                mmo_auth_sync ();
                            }
                            else
                                login_log
                                    ("Char-server '%s':  Error of Status change - actual status is already the good status (account: %d, status %d, ip: %s)."
                                     RETCODE, server[id].name, acc, statut,
                                     ip);
                            break;
                        }
                    }
                    if (i == auth_num)
                    {
                        login_log
                            ("Char-server '%s': Error of Status change (account: %d not found, suggested status %d, ip: %s)."
                             RETCODE, server[id].name, acc, statut, ip);
                    }
                    RFIFOSKIP (fd, 10);
                }
                return 0;

            case 0x2725:       // Receiving of map-server via char-server a ban resquest (by Yor)
                if (RFIFOREST (fd) < 18)
                    return 0;
                {
                    int  acc;
                    acc = RFIFOL (fd, 2);
                    for (i = 0; i < auth_num; i++)
                    {
                        if (auth_dat[i].account_id == acc)
                        {
                            time_t timestamp;
                            struct tm *tmtime;
                            if (auth_dat[i].ban_until_time == 0
                                || auth_dat[i].ban_until_time < time (NULL))
                                timestamp = time (NULL);
                            else
                                timestamp = auth_dat[i].ban_until_time;
                            tmtime = gmtime (&timestamp);
                            tmtime->tm_year =
                                tmtime->tm_year + (short) RFIFOW (fd, 6);
                            tmtime->tm_mon =
                                tmtime->tm_mon + (short) RFIFOW (fd, 8);
                            tmtime->tm_mday =
                                tmtime->tm_mday + (short) RFIFOW (fd, 10);
                            tmtime->tm_hour =
                                tmtime->tm_hour + (short) RFIFOW (fd, 12);
                            tmtime->tm_min =
                                tmtime->tm_min + (short) RFIFOW (fd, 14);
                            tmtime->tm_sec =
                                tmtime->tm_sec + (short) RFIFOW (fd, 16);
                            timestamp = timegm (tmtime);
                            if (timestamp != -1)
                            {
                                if (timestamp <= time (NULL))
                                    timestamp = 0;
                                if (auth_dat[i].ban_until_time != timestamp)
                                {
                                    if (timestamp != 0)
                                    {
                                        unsigned char buf[16];
                                        char tmpstr[2048];
                                        strftime (tmpstr, 24, date_format,
                                                  gmtime (&timestamp));
                                        login_log
                                            ("Char-server '%s': Ban request (account: %d, new final date of banishment: %d (%s), ip: %s)."
                                             RETCODE, server[id].name, acc,
                                             timestamp,
                                             (timestamp ==
                                              0 ? "no banishment" : tmpstr),
                                             ip);
                                        WBUFW (buf, 0) = 0x2731;
                                        WBUFL (buf, 2) =
                                            auth_dat[i].account_id;
                                        WBUFB (buf, 6) = 1; // 0: change of statut, 1: ban
                                        WBUFL (buf, 7) = timestamp; // status or final date of a banishment
                                        charif_sendallwos (-1, buf, 11);
                                        for (j = 0; j < AUTH_FIFO_SIZE; j++)
                                            if (auth_fifo[j].account_id ==
                                                acc)
                                                auth_fifo[j].login_id1++;   // to avoid reconnection error when come back from map-server (char-server will ask again the authentification)
                                    }
                                    else
                                    {
                                        login_log
                                            ("Char-server '%s': Error of ban request (account: %d, new date unbans the account, ip: %s)."
                                             RETCODE, server[id].name, acc,
                                             ip);
                                    }
                                    auth_dat[i].ban_until_time = timestamp;
                                    // Save
                                    mmo_auth_sync ();
                                }
                                else
                                {
                                    login_log
                                        ("Char-server '%s': Error of ban request (account: %d, no change for ban date, ip: %s)."
                                         RETCODE, server[id].name, acc, ip);
                                }
                            }
                            else
                            {
                                login_log
                                    ("Char-server '%s': Error of ban request (account: %d, invalid date, ip: %s)."
                                     RETCODE, server[id].name, acc, ip);
                            }
                            break;
                        }
                    }
                    if (i == auth_num)
                    {
                        login_log
                            ("Char-server '%s': Error of ban request (account: %d not found, ip: %s)."
                             RETCODE, server[id].name, acc, ip);
                    }
                    RFIFOSKIP (fd, 18);
                }
                return 0;

            case 0x2727:       // Change of sex (sex is reversed)
                if (RFIFOREST (fd) < 6)
                    return 0;
                {
                    int  acc, sex;
                    acc = RFIFOL (fd, 2);
                    for (i = 0; i < auth_num; i++)
                    {
//                  printf("%d,", auth_dat[i].account_id);
                        if (auth_dat[i].account_id == acc)
                        {
                            if (auth_dat[i].sex == 2)
                                login_log
                                    ("Char-server '%s': Error of sex change - Server account (suggested account: %d, actual sex %d (Server), ip: %s)."
                                     RETCODE, server[id].name, acc,
                                     auth_dat[i].sex, ip);
                            else
                            {
                                unsigned char buf[16];
                                if (auth_dat[i].sex == 0)
                                    sex = 1;
                                else
                                    sex = 0;
                                login_log
                                    ("Char-server '%s': Sex change (account: %d, new sex %c, ip: %s)."
                                     RETCODE, server[id].name, acc,
                                     (sex == 2) ? 'S' : (sex ? 'M' : 'F'),
                                     ip);
                                for (j = 0; j < AUTH_FIFO_SIZE; j++)
                                    if (auth_fifo[j].account_id == acc)
                                        auth_fifo[j].login_id1++;   // to avoid reconnection error when come back from map-server (char-server will ask again the authentification)
                                auth_dat[i].sex = sex;
                                WBUFW (buf, 0) = 0x2723;
                                WBUFL (buf, 2) = acc;
                                WBUFB (buf, 6) = sex;
                                charif_sendallwos (-1, buf, 7);
                            }
                            break;
                        }
                    }
                    if (i == auth_num)
                    {
                        login_log
                            ("Char-server '%s': Error of sex change (account: %d not found, sex would be reversed, ip: %s)."
                             RETCODE, server[id].name, acc, ip);
                    }
                    RFIFOSKIP (fd, 6);
                }
                return 0;

            case 0x2728:       // We receive account_reg2 from a char-server, and we send them to other char-servers.
                if (RFIFOREST (fd) < 4 || RFIFOREST (fd) < RFIFOW (fd, 2))
                    return 0;
                {
                    int  acc, p;
                    acc = RFIFOL (fd, 4);
                    for (i = 0; i < auth_num; i++)
                    {
                        if (auth_dat[i].account_id == acc)
                        {
                            unsigned char buf[RFIFOW (fd, 2) + 1];
                            login_log
                                ("Char-server '%s': receiving (from the char-server) of account_reg2 (account: %d, ip: %s)."
                                 RETCODE, server[id].name, acc, ip);
                            for (p = 8, j = 0;
                                 p < RFIFOW (fd, 2) && j < ACCOUNT_REG2_NUM;
                                 p += 36, j++)
                            {
                                memcpy (auth_dat[i].account_reg2[j].str,
                                        RFIFOP (fd, p), 32);
                                auth_dat[i].account_reg2[j].str[31] = '\0';
                                remove_control_chars (auth_dat[i].account_reg2
                                                      [j].str);
                                auth_dat[i].account_reg2[j].value =
                                    RFIFOL (fd, p + 32);
                            }
                            auth_dat[i].account_reg2_num = j;
                            // Sending information towards the other char-servers.
                            memcpy (WBUFP (buf, 0), RFIFOP (fd, 0),
                                    RFIFOW (fd, 2));
                            WBUFW (buf, 0) = 0x2729;
                            charif_sendallwos (fd, buf, WBUFW (buf, 2));
                            // Save
                            mmo_auth_sync ();
//                      printf("parse_fromchar: receiving (from the char-server) of account_reg2 (account id: %d).\n", acc);
                            break;
                        }
                    }
                    if (i == auth_num)
                    {
//                  printf("parse_fromchar: receiving (from the char-server) of account_reg2 (unknwon account id: %d).\n", acc);
                        login_log
                            ("Char-server '%s': receiving (from the char-server) of account_reg2 (account: %d not found, ip: %s)."
                             RETCODE, server[id].name, acc, ip);
                    }
                }
                RFIFOSKIP (fd, RFIFOW (fd, 2));
                break;

            case 0x272a:       // Receiving of map-server via char-server a unban resquest (by Yor)
                if (RFIFOREST (fd) < 6)
                    return 0;
                {
                    int  acc;
                    acc = RFIFOL (fd, 2);
                    for (i = 0; i < auth_num; i++)
                    {
                        if (auth_dat[i].account_id == acc)
                        {
                            if (auth_dat[i].ban_until_time != 0)
                            {
                                auth_dat[i].ban_until_time = 0;
                                login_log
                                    ("Char-server '%s': UnBan request (account: %d, ip: %s)."
                                     RETCODE, server[id].name, acc, ip);
                            }
                            else
                            {
                                login_log
                                    ("Char-server '%s': Error of UnBan request (account: %d, no change for unban date, ip: %s)."
                                     RETCODE, server[id].name, acc, ip);
                            }
                            break;
                        }
                    }
                    if (i == auth_num)
                    {
                        login_log
                            ("Char-server '%s': Error of UnBan request (account: %d not found, ip: %s)."
                             RETCODE, server[id].name, acc, ip);
                    }
                    RFIFOSKIP (fd, 6);
                }
                return 0;

                // request from char-server to change account password
            case 0x2740:       // 0x2740 <account_id>.L <actual_password>.24B <new_password>.24B
                if (RFIFOREST (fd) < 54)
                    return 0;
                {
                    int  acc;
                    char actual_pass[24], new_pass[24];
                    acc = RFIFOL (fd, 2);
                    memcpy (actual_pass, RFIFOP (fd, 6), 24);
                    actual_pass[23] = '\0';
                    remove_control_chars (actual_pass);
                    memcpy (new_pass, RFIFOP (fd, 30), 24);
                    new_pass[23] = '\0';
                    remove_control_chars (new_pass);

                    int  status = 0;

                    for (i = 0; i < auth_num; i++)
                    {
                        if (auth_dat[i].account_id == acc)
                        {
                            if (pass_ok (actual_pass, auth_dat[i].pass))
                            {
                                if (strlen (new_pass) < 4)
                                    status = 3;
                                else
                                {
                                    status = 1;
                                    strcpy (auth_dat[i].pass, MD5_saltcrypt(new_pass, make_salt()));
                                    login_log
                                        ("Char-server '%s': Change pass success (account: %d (%s), ip: %s."
                                         RETCODE, server[id].name, acc,
                                         auth_dat[i].userid, ip);
                                }
                            }
                            else
                            {
                                status = 2;
                                login_log
                                    ("Char-server '%s': Attempt to modify a pass failed, wrong password. (account: %d (%s), ip: %s)."
                                     RETCODE, server[id].name, acc,
                                     auth_dat[i].userid, ip);
                            }
                            break;
                        }
                    }
                    WFIFOW (fd, 0) = 0x2741;
                    WFIFOL (fd, 2) = acc;
                    WFIFOB (fd, 6) = status;    // 0: acc not found, 1: success, 2: password mismatch, 3: pass too short
                    WFIFOSET (fd, 7);
                }

                RFIFOSKIP (fd, 54);
                break;

            default:
            {
                FILE *logfp;
                char tmpstr[24];
                struct timeval tv;
                logfp = fopen_ (login_log_unknown_packets_filename, "a");
                if (logfp)
                {
                    gettimeofday (&tv, NULL);
                    strftime (tmpstr, 23, date_format, gmtime (&(tv.tv_sec)));
                    fprintf (logfp,
                             "%s.%03d: receiving of an unknown packet -> disconnection"
                             RETCODE, tmpstr, (int) tv.tv_usec / 1000);
                    fprintf (logfp,
                             "parse_fromchar: connection #%d (ip: %s), packet: 0x%x (with being read: %d)."
                             RETCODE, fd, ip, RFIFOW (fd, 0), RFIFOREST (fd));
                    fprintf (logfp, "Detail (in hex):" RETCODE);
                    fprintf (logfp,
                             "---- 00-01-02-03-04-05-06-07  08-09-0A-0B-0C-0D-0E-0F"
                             RETCODE);
                    memset (tmpstr, '\0', sizeof (tmpstr));
                    for (i = 0; i < RFIFOREST (fd); i++)
                    {
                        if ((i & 15) == 0)
                            fprintf (logfp, "%04X ", i);
                        fprintf (logfp, "%02x ", RFIFOB (fd, i));
                        if (RFIFOB (fd, i) > 0x1f)
                            tmpstr[i % 16] = RFIFOB (fd, i);
                        else
                            tmpstr[i % 16] = '.';
                        if ((i - 7) % 16 == 0)  // -8 + 1
                            fprintf (logfp, " ");
                        else if ((i + 1) % 16 == 0)
                        {
                            fprintf (logfp, " %s" RETCODE, tmpstr);
                            memset (tmpstr, '\0', sizeof (tmpstr));
                        }
                    }
                    if (i % 16 != 0)
                    {
                        for (j = i; j % 16 != 0; j++)
                        {
                            fprintf (logfp, "   ");
                            if ((j - 7) % 16 == 0)  // -8 + 1
                                fprintf (logfp, " ");
                        }
                        fprintf (logfp, " %s" RETCODE, tmpstr);
                    }
                    fprintf (logfp, RETCODE);
                    fclose_ (logfp);
                }
            }
                printf
                    ("parse_fromchar: Unknown packet 0x%x (from a char-server)! -> disconnection.\n",
                     RFIFOW (fd, 0));
                session[fd]->eof = 1;
                printf
                    ("Char-server has been disconnected (unknown packet).\n");
                return 0;
        }
    }
    return 0;
}

//---------------------------------------
// Packet parsing for administation login
//---------------------------------------
int parse_admin (int fd)
{
    int  i, j;
    unsigned char *p = (unsigned char *) &session[fd]->client_addr.sin_addr;
    char *account_name;
    char ip[16];

    sprintf (ip, "%d.%d.%d.%d", p[0], p[1], p[2], p[3]);

    if (session[fd]->eof)
    {
        close (fd);
        delete_session (fd);
        printf ("Remote administration has disconnected (session #%d).\n",
                fd);
        return 0;
    }

    while (RFIFOREST (fd) >= 2)
    {
        if (display_parse_admin == 1)
            printf
                ("parse_admin: connection #%d, packet: 0x%x (with being read: %d).\n",
                 fd, RFIFOW (fd, 0), RFIFOREST (fd));

        switch (RFIFOW (fd, 0))
        {
            case 0x7530:       // Request of the server version
                login_log ("'ladmin': Sending of the server version (ip: %s)"
                           RETCODE, ip);
                WFIFOW (fd, 0) = 0x7531;
                WFIFOB (fd, 2) = ATHENA_MAJOR_VERSION;
                WFIFOB (fd, 3) = ATHENA_MINOR_VERSION;
                WFIFOB (fd, 4) = ATHENA_REVISION;
                WFIFOB (fd, 5) = ATHENA_RELEASE_FLAG;
                WFIFOB (fd, 6) = ATHENA_OFFICIAL_FLAG;
                WFIFOB (fd, 7) = ATHENA_SERVER_LOGIN;
                WFIFOW (fd, 8) = ATHENA_MOD_VERSION;
                WFIFOSET (fd, 10);
                RFIFOSKIP (fd, 2);
                break;

            case 0x7532:       // Request of end of connection
                login_log ("'ladmin': End of connection (ip: %s)" RETCODE,
                           ip);
                RFIFOSKIP (fd, 2);
                session[fd]->eof = 1;
                break;

            case 0x7920:       // Request of an accounts list
                if (RFIFOREST (fd) < 10)
                    return 0;
                {
                    int  st, ed, len;
                    int  id[auth_num];
                    st = RFIFOL (fd, 2);
                    ed = RFIFOL (fd, 6);
                    RFIFOSKIP (fd, 10);
                    WFIFOW (fd, 0) = 0x7921;
                    if (st < 0)
                        st = 0;
                    if (ed > END_ACCOUNT_NUM || ed < st || ed <= 0)
                        ed = END_ACCOUNT_NUM;
                    login_log
                        ("'ladmin': Sending an accounts list (ask: from %d to %d, ip: %s)"
                         RETCODE, st, ed, ip);
                    // Sort before send
                    for (i = 0; i < auth_num; i++)
                    {
                        int  k;
                        id[i] = i;
                        for (j = 0; j < i; j++)
                        {
                            if (auth_dat[id[i]].account_id <
                                auth_dat[id[j]].account_id)
                            {
                                for (k = i; k > j; k--)
                                {
                                    id[k] = id[k - 1];
                                }
                                id[j] = i;  // id[i]
                                break;
                            }
                        }
                    }
                    // Sending accounts information
                    len = 4;
                    for (i = 0; i < auth_num && len < 30000; i++)
                    {
                        int  account_id = auth_dat[id[i]].account_id;   // use sorted index
                        if (account_id >= st && account_id <= ed)
                        {
                            j = id[i];
                            WFIFOL (fd, len) = account_id;
                            WFIFOB (fd, len + 4) =
                                (unsigned char) isGM (account_id);
                            memcpy (WFIFOP (fd, len + 5), auth_dat[j].userid,
                                    24);
                            WFIFOB (fd, len + 29) = auth_dat[j].sex;
                            WFIFOL (fd, len + 30) = auth_dat[j].logincount;
                            if (auth_dat[j].state == 0 && auth_dat[j].ban_until_time != 0)  // if no state and banished
                                WFIFOL (fd, len + 34) = 7;  // 6 = Your are Prohibited to log in until %s
                            else
                                WFIFOL (fd, len + 34) = auth_dat[j].state;
                            len += 38;
                        }
                    }
                    WFIFOW (fd, 2) = len;
                    WFIFOSET (fd, len);
                }
                break;

            case 0x7924:
            {                   // [Fate] Itemfrob package: change item IDs
                if (RFIFOREST (fd) < 10)
                    return 0;
                charif_sendallwos (-1, RFIFOP (fd, 0), 10); // forward package to char servers
                RFIFOSKIP (fd, 10);
                WFIFOW (fd, 0) = 0x7925;
                WFIFOSET (fd, 2);
                break;
            }

            case 0x7930:       // Request for an account creation
                if (RFIFOREST (fd) < 91)
                    return 0;
                {
                    struct mmo_account ma;
                    ma.userid = RFIFOP (fd, 2);
                    ma.passwd = RFIFOP (fd, 26);
                    memcpy (ma.lastlogin, "-", 2);
                    ma.sex = RFIFOB (fd, 50);
                    WFIFOW (fd, 0) = 0x7931;
                    WFIFOL (fd, 2) = -1;
                    memcpy (WFIFOP (fd, 6), RFIFOP (fd, 2), 24);
                    if (strlen (ma.userid) > 23 || strlen (ma.passwd) > 23)
                    {
                        login_log
                            ("'ladmin': Attempt to create an invalid account (account or pass is too long, ip: %s)"
                             RETCODE, ip);
                    }
                    else if (strlen (ma.userid) < 4 || strlen (ma.passwd) < 4)
                    {
                        login_log
                            ("'ladmin': Attempt to create an invalid account (account or pass is too short, ip: %s)"
                             RETCODE, ip);
                    }
                    else if (ma.sex != 'F' && ma.sex != 'M')
                    {
                        login_log
                            ("'ladmin': Attempt to create an invalid account (account: %s, invalid sex, ip: %s)"
                             RETCODE, ma.userid, ip);
                    }
                    else if (account_id_count > END_ACCOUNT_NUM)
                    {
                        login_log
                            ("'ladmin': Attempt to create an account, but there is no more available id number (account: %s, sex: %c, ip: %s)"
                             RETCODE, ma.userid, ma.sex, ip);
                    }
                    else
                    {
                        remove_control_chars (ma.userid);
                        remove_control_chars (ma.passwd);
                        for (i = 0; i < auth_num; i++)
                        {
                            if (strncmp (auth_dat[i].userid, ma.userid, 24) ==
                                0)
                            {
                                login_log
                                    ("'ladmin': Attempt to create an already existing account (account: %s ip: %s)"
                                     RETCODE, auth_dat[i].userid, ip);
                                break;
                            }
                        }
                        if (i == auth_num)
                        {
                            int  new_id;
                            char email[40];
                            memcpy (email, RFIFOP (fd, 51), 40);
                            email[39] = '\0';
                            remove_control_chars (email);
                            new_id = mmo_auth_new (&ma, ma.sex, email);
                            login_log
                                ("'ladmin': Account creation (account: %s (id: %d), sex: %c, email: %s, ip: %s)"
                                 RETCODE, ma.userid, new_id,
                                 ma.sex, auth_dat[i].email, ip);
                            WFIFOL (fd, 2) = new_id;
                            mmo_auth_sync ();
                        }
                    }
                    WFIFOSET (fd, 30);
                    RFIFOSKIP (fd, 91);
                }
                break;

            case 0x7932:       // Request for an account deletion
                if (RFIFOREST (fd) < 26)
                    return 0;
                WFIFOW (fd, 0) = 0x7933;
                WFIFOL (fd, 2) = -1;
                account_name = RFIFOP (fd, 2);
                account_name[23] = '\0';
                remove_control_chars (account_name);
                i = search_account_index (account_name);
                if (i != -1)
                {
                    // Char-server is notified of deletion (for characters deletion).
                    unsigned char buf[65535];
                    WBUFW (buf, 0) = 0x2730;
                    WBUFL (buf, 2) = auth_dat[i].account_id;
                    charif_sendallwos (-1, buf, 6);
                    // send answer
                    memcpy (WFIFOP (fd, 6), auth_dat[i].userid, 24);
                    WFIFOL (fd, 2) = auth_dat[i].account_id;
                    // save deleted account in log file
                    login_log
                        ("'ladmin': Account deletion (account: %s, id: %d, ip: %s) - saved in next line:"
                         RETCODE, auth_dat[i].userid, auth_dat[i].account_id,
                         ip);
                    mmo_auth_tostr (buf, &auth_dat[i]);
                    login_log ("%s" RETCODE, buf);
                    // delete account
                    memset (auth_dat[i].userid, '\0',
                            sizeof (auth_dat[i].userid));
                    auth_dat[i].account_id = -1;
                    mmo_auth_sync ();
                }
                else
                {
                    memcpy (WFIFOP (fd, 6), account_name, 24);
                    login_log
                        ("'ladmin': Attempt to delete an unknown account (account: %s, ip: %s)"
                         RETCODE, account_name, ip);
                }
                WFIFOSET (fd, 30);
                RFIFOSKIP (fd, 26);
                break;

            case 0x7934:       // Request to change a password
                if (RFIFOREST (fd) < 50)
                    return 0;
                WFIFOW (fd, 0) = 0x7935;
                WFIFOL (fd, 2) = -1;
                account_name = RFIFOP (fd, 2);
                account_name[23] = '\0';
                remove_control_chars (account_name);
                i = search_account_index (account_name);
                if (i != -1)
                {
                    memcpy (WFIFOP (fd, 6), auth_dat[i].userid, 24);
                    strcpy (auth_dat[i].pass, MD5_saltcrypt(RFIFOP (fd, 26), make_salt()));
                    auth_dat[i].pass[39] = '\0';
                    WFIFOL (fd, 2) = auth_dat[i].account_id;
                    login_log
                        ("'ladmin': Modification of a password (account: %s, new password: %s, ip: %s)"
                         RETCODE, auth_dat[i].userid, auth_dat[i].pass, ip);
                    mmo_auth_sync ();
                }
                else
                {
                    memcpy (WFIFOP (fd, 6), account_name, 24);
                    login_log
                        ("'ladmin': Attempt to modify the password of an unknown account (account: %s, ip: %s)"
                         RETCODE, account_name, ip);
                }
                WFIFOSET (fd, 30);
                RFIFOSKIP (fd, 50);
                break;

            case 0x7936:       // Request to modify a state
                if (RFIFOREST (fd) < 50)
                    return 0;
                {
                    char error_message[20];
                    int  statut;
                    WFIFOW (fd, 0) = 0x7937;
                    WFIFOL (fd, 2) = -1;
                    account_name = RFIFOP (fd, 2);
                    account_name[23] = '\0';
                    remove_control_chars (account_name);
                    statut = RFIFOL (fd, 26);
                    memcpy (error_message, RFIFOP (fd, 30), 20);
                    error_message[19] = '\0';
                    remove_control_chars (error_message);
                    if (statut != 7 || error_message[0] == '\0')
                    {           // 7: // 6 = Your are Prohibited to log in until %s
                        strcpy (error_message, "-");
                    }
                    i = search_account_index (account_name);
                    if (i != -1)
                    {
                        memcpy (WFIFOP (fd, 6), auth_dat[i].userid, 24);
                        WFIFOL (fd, 2) = auth_dat[i].account_id;
                        if (auth_dat[i].state == statut
                            && strcmp (auth_dat[i].error_message,
                                       error_message) == 0)
                            login_log
                                ("'ladmin': Modification of a state, but the state of the account is already the good state (account: %s, received state: %d, ip: %s)"
                                 RETCODE, account_name, statut, ip);
                        else
                        {
                            if (statut == 7)
                                login_log
                                    ("'ladmin': Modification of a state (account: %s, new state: %d - prohibited to login until '%s', ip: %s)"
                                     RETCODE, auth_dat[i].userid, statut,
                                     error_message, ip);
                            else
                                login_log
                                    ("'ladmin': Modification of a state (account: %s, new state: %d, ip: %s)"
                                     RETCODE, auth_dat[i].userid, statut, ip);
                            if (auth_dat[i].state == 0)
                            {
                                unsigned char buf[16];
                                WBUFW (buf, 0) = 0x2731;
                                WBUFL (buf, 2) = auth_dat[i].account_id;
                                WBUFB (buf, 6) = 0; // 0: change of statut, 1: ban
                                WBUFL (buf, 7) = statut;    // status or final date of a banishment
                                charif_sendallwos (-1, buf, 11);
                                for (j = 0; j < AUTH_FIFO_SIZE; j++)
                                    if (auth_fifo[j].account_id ==
                                        auth_dat[i].account_id)
                                        auth_fifo[j].login_id1++;   // to avoid reconnection error when come back from map-server (char-server will ask again the authentification)
                            }
                            auth_dat[i].state = statut;
                            memcpy (auth_dat[i].error_message, error_message,
                                    20);
                            mmo_auth_sync ();
                        }
                    }
                    else
                    {
                        memcpy (WFIFOP (fd, 6), account_name, 24);
                        login_log
                            ("'ladmin': Attempt to modify the state of an unknown account (account: %s, received state: %d, ip: %s)"
                             RETCODE, account_name, statut, ip);
                    }
                    WFIFOL (fd, 30) = statut;
                }
                WFIFOSET (fd, 34);
                RFIFOSKIP (fd, 50);
                break;

            case 0x7938:       // Request for servers list and # of online players
                login_log ("'ladmin': Sending of servers list (ip: %s)"
                           RETCODE, ip);
                server_num = 0;
                for (i = 0; i < MAX_SERVERS; i++)
                {
                    if (server_fd[i] >= 0)
                    {
                        WFIFOL (fd, 4 + server_num * 32) = server[i].ip;
                        WFIFOW (fd, 4 + server_num * 32 + 4) = server[i].port;
                        memcpy (WFIFOP (fd, 4 + server_num * 32 + 6),
                                server[i].name, 20);
                        WFIFOW (fd, 4 + server_num * 32 + 26) =
                            server[i].users;
                        WFIFOW (fd, 4 + server_num * 32 + 28) =
                            server[i].maintenance;
                        WFIFOW (fd, 4 + server_num * 32 + 30) = server[i].new;
                        server_num++;
                    }
                }
                WFIFOW (fd, 0) = 0x7939;
                WFIFOW (fd, 2) = 4 + 32 * server_num;
                WFIFOSET (fd, 4 + 32 * server_num);
                RFIFOSKIP (fd, 2);
                break;

            case 0x793a:       // Request to password check
                if (RFIFOREST (fd) < 50)
                    return 0;
                WFIFOW (fd, 0) = 0x793b;
                WFIFOL (fd, 2) = -1;
                account_name = RFIFOP (fd, 2);
                account_name[23] = '\0';
                remove_control_chars (account_name);
                i = search_account_index (account_name);
                if (i != -1)
                {
                    memcpy (WFIFOP (fd, 6), auth_dat[i].userid, 24);
		    if ( pass_ok(RFIFOP (fd, 26), auth_dat[i].pass) )
                    {
                        WFIFOL (fd, 2) = auth_dat[i].account_id;
                        login_log
                            ("'ladmin': Check of password OK (account: %s, password: %s, ip: %s)"
                             RETCODE, auth_dat[i].userid, auth_dat[i].pass,
                             ip);
                    }
                    else
                    {
                        char pass[24];
                        memcpy (pass, RFIFOP (fd, 26), 24);
                        pass[23] = '\0';
                        remove_control_chars (pass);
                        login_log
                            ("'ladmin': Failure of password check (account: %s, proposed pass: %s, ip: %s)"
                             RETCODE, auth_dat[i].userid, pass, ip);
                    }
                }
                else
                {
                    memcpy (WFIFOP (fd, 6), account_name, 24);
                    login_log
                        ("'ladmin': Attempt to check the password of an unknown account (account: %s, ip: %s)"
                         RETCODE, account_name, ip);
                }
                WFIFOSET (fd, 30);
                RFIFOSKIP (fd, 50);
                break;

            case 0x793c:       // Request to modify sex
                if (RFIFOREST (fd) < 27)
                    return 0;
                WFIFOW (fd, 0) = 0x793d;
                WFIFOL (fd, 2) = -1;
                account_name = RFIFOP (fd, 2);
                account_name[23] = '\0';
                remove_control_chars (account_name);
                memcpy (WFIFOP (fd, 6), account_name, 24);
                {
                    char sex;
                    sex = RFIFOB (fd, 26);
                    if (sex != 'F' && sex != 'M')
                    {
                        if (sex > 31)
                            login_log
                                ("'ladmin': Attempt to give an invalid sex (account: %s, received sex: %c, ip: %s)"
                                 RETCODE, account_name, sex, ip);
                        else
                            login_log
                                ("'ladmin': Attempt to give an invalid sex (account: %s, received sex: 'control char', ip: %s)"
                                 RETCODE, account_name, ip);
                    }
                    else
                    {
                        i = search_account_index (account_name);
                        if (i != -1)
                        {
                            memcpy (WFIFOP (fd, 6), auth_dat[i].userid, 24);
                            if (auth_dat[i].sex !=
                                ((sex == 'S' || sex == 's') ? 2 : (sex == 'M'
                                                                   || sex ==
                                                                   'm')))
                            {
                                unsigned char buf[16];
                                WFIFOL (fd, 2) = auth_dat[i].account_id;
                                for (j = 0; j < AUTH_FIFO_SIZE; j++)
                                    if (auth_fifo[j].account_id ==
                                        auth_dat[i].account_id)
                                        auth_fifo[j].login_id1++;   // to avoid reconnection error when come back from map-server (char-server will ask again the authentification)
                                auth_dat[i].sex = (sex == 'S'
                                                   || sex ==
                                                   's') ? 2 : (sex == 'M'
                                                               || sex == 'm');
                                login_log
                                    ("'ladmin': Modification of a sex (account: %s, new sex: %c, ip: %s)"
                                     RETCODE, auth_dat[i].userid, sex, ip);
                                mmo_auth_sync ();
                                // send to all char-server the change
                                WBUFW (buf, 0) = 0x2723;
                                WBUFL (buf, 2) = auth_dat[i].account_id;
                                WBUFB (buf, 6) = auth_dat[i].sex;
                                charif_sendallwos (-1, buf, 7);
                            }
                            else
                            {
                                login_log
                                    ("'ladmin': Modification of a sex, but the sex is already the good sex (account: %s, sex: %c, ip: %s)"
                                     RETCODE, auth_dat[i].userid, sex, ip);
                            }
                        }
                        else
                        {
                            login_log
                                ("'ladmin': Attempt to modify the sex of an unknown account (account: %s, received sex: %c, ip: %s)"
                                 RETCODE, account_name, sex, ip);
                        }
                    }
                }
                WFIFOSET (fd, 30);
                RFIFOSKIP (fd, 27);
                break;

            case 0x793e:       // Request to modify GM level
                if (RFIFOREST (fd) < 27)
                    return 0;
                WFIFOW (fd, 0) = 0x793f;
                WFIFOL (fd, 2) = -1;
                account_name = RFIFOP (fd, 2);
                account_name[23] = '\0';
                remove_control_chars (account_name);
                memcpy (WFIFOP (fd, 6), account_name, 24);
                {
                    char new_gm_level;
                    new_gm_level = RFIFOB (fd, 26);
                    if (new_gm_level < 0 || new_gm_level > 99)
                    {
                        login_log
                            ("'ladmin': Attempt to give an invalid GM level (account: %s, received GM level: %d, ip: %s)"
                             RETCODE, account_name, (int) new_gm_level, ip);
                    }
                    else
                    {
                        i = search_account_index (account_name);
                        if (i != -1)
                        {
                            int  acc = auth_dat[i].account_id;
                            memcpy (WFIFOP (fd, 6), auth_dat[i].userid, 24);
                            if (isGM (acc) != new_gm_level)
                            {
                                // modification of the file
                                FILE *fp, *fp2;
                                int  lock;
                                char line[512];
                                int  GM_account, GM_level;
                                int  modify_flag;
                                char tmpstr[24];
                                struct timeval tv;
                                if ((fp2 =
                                     lock_fopen (GM_account_filename,
                                                 &lock)) != NULL)
                                {
                                    if ((fp =
                                         fopen_ (GM_account_filename,
                                                 "r")) != NULL)
                                    {
                                        gettimeofday (&tv, NULL);
                                        strftime (tmpstr, 23, date_format,
                                                  gmtime (&(tv.tv_sec)));
                                        modify_flag = 0;
                                        // read/write GM file
                                        while (fgets
                                               (line, sizeof (line) - 1, fp))
                                        {
                                            while (line[0] != '\0'
                                                   && (line[strlen (line) - 1]
                                                       == '\n'
                                                       || line[strlen (line) -
                                                               1] == '\r'))
                                                line[strlen (line) - 1] =
                                                    '\0';
                                            if ((line[0] == '/'
                                                 && line[1] == '/')
                                                || line[0] == '\0')
                                                fprintf (fp2, "%s" RETCODE,
                                                         line);
                                            else
                                            {
                                                if (sscanf
                                                    (line, "%d %d",
                                                     &GM_account,
                                                     &GM_level) != 2
                                                    && sscanf (line, "%d: %d",
                                                               &GM_account,
                                                               &GM_level) !=
                                                    2)
                                                    fprintf (fp2,
                                                             "%s" RETCODE,
                                                             line);
                                                else if (GM_account != acc)
                                                    fprintf (fp2,
                                                             "%s" RETCODE,
                                                             line);
                                                else if (new_gm_level < 1)
                                                {
                                                    fprintf (fp2,
                                                             "// %s: 'ladmin' GM level removed on account %d '%s' (previous level: %d)"
                                                             RETCODE "//%d %d"
                                                             RETCODE, tmpstr,
                                                             acc,
                                                             auth_dat
                                                             [i].userid,
                                                             GM_level, acc,
                                                             new_gm_level);
                                                    modify_flag = 1;
                                                }
                                                else
                                                {
                                                    fprintf (fp2,
                                                             "// %s: 'ladmin' GM level on account %d '%s' (previous level: %d)"
                                                             RETCODE "%d %d"
                                                             RETCODE, tmpstr,
                                                             acc,
                                                             auth_dat
                                                             [i].userid,
                                                             GM_level, acc,
                                                             new_gm_level);
                                                    modify_flag = 1;
                                                }
                                            }
                                        }
                                        if (modify_flag == 0)
                                            fprintf (fp2,
                                                     "// %s: 'ladmin' GM level on account %d '%s' (previous level: 0)"
                                                     RETCODE "%d %d" RETCODE,
                                                     tmpstr, acc,
                                                     auth_dat[i].userid, acc,
                                                     new_gm_level);
                                        fclose_ (fp);
                                    }
                                    else
                                    {
                                        login_log
                                            ("'ladmin': Attempt to modify of a GM level - impossible to read GM accounts file (account: %s (%d), received GM level: %d, ip: %s)"
                                             RETCODE, auth_dat[i].userid, acc,
                                             (int) new_gm_level, ip);
                                    }
                                    if (lock_fclose
                                        (fp2, GM_account_filename,
                                         &lock) == 0)
                                    {
                                        WFIFOL (fd, 2) = acc;
                                        login_log
                                            ("'ladmin': Modification of a GM level (account: %s (%d), new GM level: %d, ip: %s)"
                                             RETCODE, auth_dat[i].userid, acc,
                                             (int) new_gm_level, ip);
                                        // read and send new GM informations
                                        read_gm_account ();
                                        send_GM_accounts ();
                                    }
                                    else
                                    {
                                        login_log
                                            ("'ladmin': Attempt to modify of a GM level - impossible to write GM accounts file (account: %s (%d), received GM level: %d, ip: %s)"
                                             RETCODE, auth_dat[i].userid, acc,
                                             (int) new_gm_level, ip);
                                    }
                                }
                                else
                                {
                                    login_log
                                        ("'ladmin': Attempt to modify of a GM level - impossible to write GM accounts file (account: %s (%d), received GM level: %d, ip: %s)"
                                         RETCODE, auth_dat[i].userid, acc,
                                         (int) new_gm_level, ip);
                                }
                            }
                            else
                            {
                                login_log
                                    ("'ladmin': Attempt to modify of a GM level, but the GM level is already the good GM level (account: %s (%d), GM level: %d, ip: %s)"
                                     RETCODE, auth_dat[i].userid, acc,
                                     (int) new_gm_level, ip);
                            }
                        }
                        else
                        {
                            login_log
                                ("'ladmin': Attempt to modify the GM level of an unknown account (account: %s, received GM level: %d, ip: %s)"
                                 RETCODE, account_name, (int) new_gm_level,
                                 ip);
                        }
                    }
                }
                WFIFOSET (fd, 30);
                RFIFOSKIP (fd, 27);
                break;

            case 0x7940:       // Request to modify e-mail
                if (RFIFOREST (fd) < 66)
                    return 0;
                WFIFOW (fd, 0) = 0x7941;
                WFIFOL (fd, 2) = -1;
                account_name = RFIFOP (fd, 2);
                account_name[23] = '\0';
                remove_control_chars (account_name);
                memcpy (WFIFOP (fd, 6), account_name, 24);
                {
                    char email[40];
                    memcpy (email, RFIFOP (fd, 26), 40);
                    if (e_mail_check (email) == 0)
                    {
                        login_log
                            ("'ladmin': Attempt to give an invalid e-mail (account: %s, ip: %s)"
                             RETCODE, account_name, ip);
                    }
                    else
                    {
                        remove_control_chars (email);
                        i = search_account_index (account_name);
                        if (i != -1)
                        {
                            memcpy (WFIFOP (fd, 6), auth_dat[i].userid, 24);
                            memcpy (auth_dat[i].email, email, 40);
                            WFIFOL (fd, 2) = auth_dat[i].account_id;
                            login_log
                                ("'ladmin': Modification of an email (account: %s, new e-mail: %s, ip: %s)"
                                 RETCODE, auth_dat[i].userid, email, ip);
                            mmo_auth_sync ();
                        }
                        else
                        {
                            login_log
                                ("'ladmin': Attempt to modify the e-mail of an unknown account (account: %s, received e-mail: %s, ip: %s)"
                                 RETCODE, account_name, email, ip);
                        }
                    }
                }
                WFIFOSET (fd, 30);
                RFIFOSKIP (fd, 66);
                break;

            case 0x7942:       // Request to modify memo field
                if (RFIFOREST (fd) < 28
                    || RFIFOREST (fd) < (28 + RFIFOW (fd, 26)))
                    return 0;
                WFIFOW (fd, 0) = 0x7943;
                WFIFOL (fd, 2) = -1;
                account_name = RFIFOP (fd, 2);
                account_name[23] = '\0';
                remove_control_chars (account_name);
                i = search_account_index (account_name);
                if (i != -1)
                {
                    int  size_of_memo = sizeof (auth_dat[i].memo);
                    memcpy (WFIFOP (fd, 6), auth_dat[i].userid, 24);
                    memset (auth_dat[i].memo, '\0', size_of_memo);
                    if (RFIFOW (fd, 26) == 0)
                    {
                        strncpy (auth_dat[i].memo, "!", size_of_memo);
                    }
                    else if (RFIFOW (fd, 26) > size_of_memo - 1)
                    {
                        memcpy (auth_dat[i].memo, RFIFOP (fd, 28),
                                size_of_memo - 1);
                    }
                    else
                    {
                        memcpy (auth_dat[i].memo, RFIFOP (fd, 28),
                                RFIFOW (fd, 26));
                    }
                    auth_dat[i].memo[size_of_memo - 1] = '\0';
                    remove_control_chars (auth_dat[i].memo);
                    WFIFOL (fd, 2) = auth_dat[i].account_id;
                    login_log
                        ("'ladmin': Modification of a memo field (account: %s, new memo: %s, ip: %s)"
                         RETCODE, auth_dat[i].userid, auth_dat[i].memo, ip);
                    mmo_auth_sync ();
                }
                else
                {
                    memcpy (WFIFOP (fd, 6), account_name, 24);
                    login_log
                        ("'ladmin': Attempt to modify the memo field of an unknown account (account: %s, ip: %s)"
                         RETCODE, account_name, ip);
                }
                WFIFOSET (fd, 30);
                RFIFOSKIP (fd, 28 + RFIFOW (fd, 26));
                break;

            case 0x7944:       // Request to found an account id
                if (RFIFOREST (fd) < 26)
                    return 0;
                WFIFOW (fd, 0) = 0x7945;
                WFIFOL (fd, 2) = -1;
                account_name = RFIFOP (fd, 2);
                account_name[23] = '\0';
                remove_control_chars (account_name);
                i = search_account_index (account_name);
                if (i != -1)
                {
                    memcpy (WFIFOP (fd, 6), auth_dat[i].userid, 24);
                    WFIFOL (fd, 2) = auth_dat[i].account_id;
                    login_log
                        ("'ladmin': Request (by the name) of an account id (account: %s, id: %d, ip: %s)"
                         RETCODE, auth_dat[i].userid, auth_dat[i].account_id,
                         ip);
                }
                else
                {
                    memcpy (WFIFOP (fd, 6), account_name, 24);
                    login_log
                        ("'ladmin': ID request (by the name) of an unknown account (account: %s, ip: %s)"
                         RETCODE, account_name, ip);
                }
                WFIFOSET (fd, 30);
                RFIFOSKIP (fd, 26);
                break;

            case 0x7946:       // Request to found an account name
                if (RFIFOREST (fd) < 6)
                    return 0;
                WFIFOW (fd, 0) = 0x7947;
                WFIFOL (fd, 2) = RFIFOL (fd, 2);
                memset (WFIFOP (fd, 6), '\0', 24);
                for (i = 0; i < auth_num; i++)
                {
                    if (auth_dat[i].account_id == RFIFOL (fd, 2))
                    {
                        strncpy (WFIFOP (fd, 6), auth_dat[i].userid, 24);
                        login_log
                            ("'ladmin': Request (by id) of an account name (account: %s, id: %d, ip: %s)"
                             RETCODE, auth_dat[i].userid, RFIFOL (fd, 2), ip);
                        break;
                    }
                }
                if (i == auth_num)
                {
                    login_log
                        ("'ladmin': Name request (by id) of an unknown account (id: %d, ip: %s)"
                         RETCODE, RFIFOL (fd, 2), ip);
                    strncpy (WFIFOP (fd, 6), "", 24);
                }
                WFIFOSET (fd, 30);
                RFIFOSKIP (fd, 6);
                break;

            case 0x7948:       // Request to change the validity limit (timestamp) (absolute value)
                if (RFIFOREST (fd) < 30)
                    return 0;
                {
                    time_t timestamp;
                    char tmpstr[2048];
                    WFIFOW (fd, 0) = 0x7949;
                    WFIFOL (fd, 2) = -1;
                    account_name = RFIFOP (fd, 2);
                    account_name[23] = '\0';
                    remove_control_chars (account_name);
                    timestamp = (time_t) RFIFOL (fd, 26);
                    strftime (tmpstr, 24, date_format, gmtime (&timestamp));
                    i = search_account_index (account_name);
                    if (i != -1)
                    {
                        memcpy (WFIFOP (fd, 6), auth_dat[i].userid, 24);
                        login_log
                            ("'ladmin': Change of a validity limit (account: %s, new validity: %d (%s), ip: %s)"
                             RETCODE, auth_dat[i].userid, timestamp,
                             (timestamp == 0 ? "unlimited" : tmpstr), ip);
                        auth_dat[i].connect_until_time = timestamp;
                        WFIFOL (fd, 2) = auth_dat[i].account_id;
                        mmo_auth_sync ();
                    }
                    else
                    {
                        memcpy (WFIFOP (fd, 6), account_name, 24);
                        login_log
                            ("'ladmin': Attempt to change the validity limit of an unknown account (account: %s, received validity: %d (%s), ip: %s)"
                             RETCODE, account_name, timestamp,
                             (timestamp == 0 ? "unlimited" : tmpstr), ip);
                    }
                    WFIFOL (fd, 30) = timestamp;
                }
                WFIFOSET (fd, 34);
                RFIFOSKIP (fd, 30);
                break;

            case 0x794a:       // Request to change the final date of a banishment (timestamp) (absolute value)
                if (RFIFOREST (fd) < 30)
                    return 0;
                {
                    time_t timestamp;
                    char tmpstr[2048];
                    WFIFOW (fd, 0) = 0x794b;
                    WFIFOL (fd, 2) = -1;
                    account_name = RFIFOP (fd, 2);
                    account_name[23] = '\0';
                    remove_control_chars (account_name);
                    timestamp = (time_t) RFIFOL (fd, 26);
                    if (timestamp <= time (NULL))
                        timestamp = 0;
                    strftime (tmpstr, 24, date_format, gmtime (&timestamp));
                    i = search_account_index (account_name);
                    if (i != -1)
                    {
                        memcpy (WFIFOP (fd, 6), auth_dat[i].userid, 24);
                        WFIFOL (fd, 2) = auth_dat[i].account_id;
                        login_log
                            ("'ladmin': Change of the final date of a banishment (account: %s, new final date of banishment: %d (%s), ip: %s)"
                             RETCODE, auth_dat[i].userid, timestamp,
                             (timestamp == 0 ? "no banishment" : tmpstr), ip);
                        if (auth_dat[i].ban_until_time != timestamp)
                        {
                            if (timestamp != 0)
                            {
                                unsigned char buf[16];
                                WBUFW (buf, 0) = 0x2731;
                                WBUFL (buf, 2) = auth_dat[i].account_id;
                                WBUFB (buf, 6) = 1; // 0: change of statut, 1: ban
                                WBUFL (buf, 7) = timestamp; // status or final date of a banishment
                                charif_sendallwos (-1, buf, 11);
                                for (j = 0; j < AUTH_FIFO_SIZE; j++)
                                    if (auth_fifo[j].account_id ==
                                        auth_dat[i].account_id)
                                        auth_fifo[j].login_id1++;   // to avoid reconnection error when come back from map-server (char-server will ask again the authentification)
                            }
                            auth_dat[i].ban_until_time = timestamp;
                            mmo_auth_sync ();
                        }
                    }
                    else
                    {
                        memcpy (WFIFOP (fd, 6), account_name, 24);
                        login_log
                            ("'ladmin': Attempt to change the final date of a banishment of an unknown account (account: %s, received final date of banishment: %d (%s), ip: %s)"
                             RETCODE, account_name, timestamp,
                             (timestamp == 0 ? "no banishment" : tmpstr), ip);
                    }
                    WFIFOL (fd, 30) = timestamp;
                }
                WFIFOSET (fd, 34);
                RFIFOSKIP (fd, 30);
                break;

            case 0x794c:       // Request to change the final date of a banishment (timestamp) (relative change)
                if (RFIFOREST (fd) < 38)
                    return 0;
                {
                    time_t timestamp;
                    struct tm *tmtime;
                    char tmpstr[2048];
                    WFIFOW (fd, 0) = 0x794d;
                    WFIFOL (fd, 2) = -1;
                    account_name = RFIFOP (fd, 2);
                    account_name[23] = '\0';
                    remove_control_chars (account_name);
                    i = search_account_index (account_name);
                    if (i != -1)
                    {
                        WFIFOL (fd, 2) = auth_dat[i].account_id;
                        memcpy (WFIFOP (fd, 6), auth_dat[i].userid, 24);
                        if (auth_dat[i].ban_until_time == 0
                            || auth_dat[i].ban_until_time < time (NULL))
                            timestamp = time (NULL);
                        else
                            timestamp = auth_dat[i].ban_until_time;
                        tmtime = gmtime (&timestamp);
                        tmtime->tm_year =
                            tmtime->tm_year + (short) RFIFOW (fd, 26);
                        tmtime->tm_mon =
                            tmtime->tm_mon + (short) RFIFOW (fd, 28);
                        tmtime->tm_mday =
                            tmtime->tm_mday + (short) RFIFOW (fd, 30);
                        tmtime->tm_hour =
                            tmtime->tm_hour + (short) RFIFOW (fd, 32);
                        tmtime->tm_min =
                            tmtime->tm_min + (short) RFIFOW (fd, 34);
                        tmtime->tm_sec =
                            tmtime->tm_sec + (short) RFIFOW (fd, 36);
                        timestamp = mktime (tmtime);
                        if (timestamp != -1)
                        {
                            if (timestamp <= time (NULL))
                                timestamp = 0;
                            strftime (tmpstr, 24, date_format,
                                      gmtime (&timestamp));
                            login_log
                                ("'ladmin': Adjustment of a final date of a banishment (account: %s, (%+d y %+d m %+d d %+d h %+d mn %+d s) -> new validity: %d (%s), ip: %s)"
                                 RETCODE, auth_dat[i].userid,
                                 (short) RFIFOW (fd, 26), (short) RFIFOW (fd,
                                                                          28),
                                 (short) RFIFOW (fd, 30), (short) RFIFOW (fd,
                                                                          32),
                                 (short) RFIFOW (fd, 34), (short) RFIFOW (fd,
                                                                          36),
                                 timestamp,
                                 (timestamp == 0 ? "no banishment" : tmpstr),
                                 ip);
                            if (auth_dat[i].ban_until_time != timestamp)
                            {
                                if (timestamp != 0)
                                {
                                    unsigned char buf[16];
                                    WBUFW (buf, 0) = 0x2731;
                                    WBUFL (buf, 2) = auth_dat[i].account_id;
                                    WBUFB (buf, 6) = 1; // 0: change of statut, 1: ban
                                    WBUFL (buf, 7) = timestamp; // status or final date of a banishment
                                    charif_sendallwos (-1, buf, 11);
                                    for (j = 0; j < AUTH_FIFO_SIZE; j++)
                                        if (auth_fifo[j].account_id ==
                                            auth_dat[i].account_id)
                                            auth_fifo[j].login_id1++;   // to avoid reconnection error when come back from map-server (char-server will ask again the authentification)
                                }
                                auth_dat[i].ban_until_time = timestamp;
                                mmo_auth_sync ();
                            }
                        }
                        else
                        {
                            strftime (tmpstr, 24, date_format,
                                      gmtime (&auth_dat[i].ban_until_time));
                            login_log
                                ("'ladmin': Impossible to adjust the final date of a banishment (account: %s, %d (%s) + (%+d y %+d m %+d d %+d h %+d mn %+d s) -> ???, ip: %s)"
                                 RETCODE, auth_dat[i].userid,
                                 auth_dat[i].ban_until_time,
                                 (auth_dat[i].ban_until_time ==
                                  0 ? "no banishment" : tmpstr),
                                 (short) RFIFOW (fd, 26), (short) RFIFOW (fd,
                                                                          28),
                                 (short) RFIFOW (fd, 30), (short) RFIFOW (fd,
                                                                          32),
                                 (short) RFIFOW (fd, 34), (short) RFIFOW (fd,
                                                                          36),
                                 ip);
                        }
                        WFIFOL (fd, 30) =
                            (unsigned long) auth_dat[i].ban_until_time;
                    }
                    else
                    {
                        memcpy (WFIFOP (fd, 6), account_name, 24);
                        login_log
                            ("'ladmin': Attempt to adjust the final date of a banishment of an unknown account (account: %s, ip: %s)"
                             RETCODE, account_name, ip);
                        WFIFOL (fd, 30) = 0;
                    }
                }
                WFIFOSET (fd, 34);
                RFIFOSKIP (fd, 38);
                break;

            case 0x794e:       // Request to send a broadcast message
                if (RFIFOREST (fd) < 8
                    || RFIFOREST (fd) < (8 + RFIFOL (fd, 4)))
                    return 0;
                WFIFOW (fd, 0) = 0x794f;
                WFIFOW (fd, 2) = -1;
                if (RFIFOL (fd, 4) < 1)
                {
                    login_log
                        ("'ladmin': Receiving a message for broadcast, but message is void (ip: %s)"
                         RETCODE, ip);
                }
                else
                {
                    // at least 1 char-server
                    for (i = 0; i < MAX_SERVERS; i++)
                        if (server_fd[i] >= 0)
                            break;
                    if (i == MAX_SERVERS)
                    {
                        login_log
                            ("'ladmin': Receiving a message for broadcast, but no char-server is online (ip: %s)"
                             RETCODE, ip);
                    }
                    else
                    {
                        char buf[32000];
                        char message[32000];
                        WFIFOW (fd, 2) = 0;
                        memset (message, '\0', sizeof (message));
                        memcpy (message, RFIFOP (fd, 8), RFIFOL (fd, 4));
                        message[sizeof (message) - 1] = '\0';
                        remove_control_chars (message);
                        if (RFIFOW (fd, 2) == 0)
                            login_log
                                ("'ladmin': Receiving a message for broadcast (message (in yellow): %s, ip: %s)"
                                 RETCODE, message, ip);
                        else
                            login_log
                                ("'ladmin': Receiving a message for broadcast (message (in blue): %s, ip: %s)"
                                 RETCODE, message, ip);
                        // send same message to all char-servers (no answer)
                        memcpy (WBUFP (buf, 0), RFIFOP (fd, 0),
                                8 + RFIFOL (fd, 4));
                        WBUFW (buf, 0) = 0x2726;
                        charif_sendallwos (-1, buf, 8 + RFIFOL (fd, 4));
                    }
                }
                WFIFOSET (fd, 4);
                RFIFOSKIP (fd, 8 + RFIFOL (fd, 4));
                break;

            case 0x7950:       // Request to change the validity limite (timestamp) (relative change)
                if (RFIFOREST (fd) < 38)
                    return 0;
                {
                    time_t timestamp;
                    struct tm *tmtime;
                    char tmpstr[2048];
                    char tmpstr2[2048];
                    WFIFOW (fd, 0) = 0x7951;
                    WFIFOL (fd, 2) = -1;
                    account_name = RFIFOP (fd, 2);
                    account_name[23] = '\0';
                    remove_control_chars (account_name);
                    i = search_account_index (account_name);
                    if (i != -1)
                    {
                        WFIFOL (fd, 2) = auth_dat[i].account_id;
                        memcpy (WFIFOP (fd, 6), auth_dat[i].userid, 24);
                        timestamp = auth_dat[i].connect_until_time;
                        if (add_to_unlimited_account == 0 && timestamp == 0)
                        {
                            login_log
                                ("'ladmin': Attempt to adjust the validity limit of an unlimited account (account: %s, ip: %s)"
                                 RETCODE, auth_dat[i].userid, ip);
                            WFIFOL (fd, 30) = 0;
                        }
                        else
                        {
                            if (timestamp == 0 || timestamp < time (NULL))
                                timestamp = time (NULL);
                            tmtime = gmtime (&timestamp);
                            tmtime->tm_year =
                                tmtime->tm_year + (short) RFIFOW (fd, 26);
                            tmtime->tm_mon =
                                tmtime->tm_mon + (short) RFIFOW (fd, 28);
                            tmtime->tm_mday =
                                tmtime->tm_mday + (short) RFIFOW (fd, 30);
                            tmtime->tm_hour =
                                tmtime->tm_hour + (short) RFIFOW (fd, 32);
                            tmtime->tm_min =
                                tmtime->tm_min + (short) RFIFOW (fd, 34);
                            tmtime->tm_sec =
                                tmtime->tm_sec + (short) RFIFOW (fd, 36);
                            timestamp = mktime (tmtime);
                            if (timestamp != -1)
                            {
                                strftime (tmpstr, 24, date_format,
                                          gmtime (&auth_dat
                                                  [i].connect_until_time));
                                strftime (tmpstr2, 24, date_format,
                                          gmtime (&timestamp));
                                login_log
                                    ("'ladmin': Adjustment of a validity limit (account: %s, %d (%s) + (%+d y %+d m %+d d %+d h %+d mn %+d s) -> new validity: %d (%s), ip: %s)"
                                     RETCODE, auth_dat[i].userid,
                                     auth_dat[i].connect_until_time,
                                     (auth_dat[i].connect_until_time ==
                                      0 ? "unlimited" : tmpstr),
                                     (short) RFIFOW (fd, 26),
                                     (short) RFIFOW (fd, 28),
                                     (short) RFIFOW (fd, 30),
                                     (short) RFIFOW (fd, 32),
                                     (short) RFIFOW (fd, 34),
                                     (short) RFIFOW (fd, 36), timestamp,
                                     (timestamp == 0 ? "unlimited" : tmpstr2),
                                     ip);
                                auth_dat[i].connect_until_time = timestamp;
                                mmo_auth_sync ();
                                WFIFOL (fd, 30) =
                                    (unsigned long)
                                    auth_dat[i].connect_until_time;
                            }
                            else
                            {
                                strftime (tmpstr, 24, date_format,
                                          gmtime (&auth_dat
                                                  [i].connect_until_time));
                                login_log
                                    ("'ladmin': Impossible to adjust a validity limit (account: %s, %d (%s) + (%+d y %+d m %+d d %+d h %+d mn %+d s) -> ???, ip: %s)"
                                     RETCODE, auth_dat[i].userid,
                                     auth_dat[i].connect_until_time,
                                     (auth_dat[i].connect_until_time ==
                                      0 ? "unlimited" : tmpstr),
                                     (short) RFIFOW (fd, 26),
                                     (short) RFIFOW (fd, 28),
                                     (short) RFIFOW (fd, 30),
                                     (short) RFIFOW (fd, 32),
                                     (short) RFIFOW (fd, 34),
                                     (short) RFIFOW (fd, 36), ip);
                                WFIFOL (fd, 30) = 0;
                            }
                        }
                    }
                    else
                    {
                        memcpy (WFIFOP (fd, 6), account_name, 24);
                        login_log
                            ("'ladmin': Attempt to adjust the validity limit of an unknown account (account: %s, ip: %s)"
                             RETCODE, account_name, ip);
                        WFIFOL (fd, 30) = 0;
                    }
                }
                WFIFOSET (fd, 34);
                RFIFOSKIP (fd, 38);
                break;

            case 0x7952:       // Request about informations of an account (by account name)
                if (RFIFOREST (fd) < 26)
                    return 0;
                WFIFOW (fd, 0) = 0x7953;
                WFIFOL (fd, 2) = -1;
                account_name = RFIFOP (fd, 2);
                account_name[23] = '\0';
                remove_control_chars (account_name);
                i = search_account_index (account_name);
                if (i != -1)
                {
                    WFIFOL (fd, 2) = auth_dat[i].account_id;
                    WFIFOB (fd, 6) =
                        (unsigned char) isGM (auth_dat[i].account_id);
                    memcpy (WFIFOP (fd, 7), auth_dat[i].userid, 24);
                    WFIFOB (fd, 31) = auth_dat[i].sex;
                    WFIFOL (fd, 32) = auth_dat[i].logincount;
                    WFIFOL (fd, 36) = auth_dat[i].state;
                    memcpy (WFIFOP (fd, 40), auth_dat[i].error_message, 20);
                    memcpy (WFIFOP (fd, 60), auth_dat[i].lastlogin, 24);
                    memcpy (WFIFOP (fd, 84), auth_dat[i].last_ip, 16);
                    memcpy (WFIFOP (fd, 100), auth_dat[i].email, 40);
                    WFIFOL (fd, 140) =
                        (unsigned long) auth_dat[i].connect_until_time;
                    WFIFOL (fd, 144) =
                        (unsigned long) auth_dat[i].ban_until_time;
                    WFIFOW (fd, 148) = strlen (auth_dat[i].memo);
                    if (auth_dat[i].memo[0])
                    {
                        memcpy (WFIFOP (fd, 150), auth_dat[i].memo,
                                strlen (auth_dat[i].memo));
                    }
                    login_log
                        ("'ladmin': Sending information of an account (request by the name; account: %s, id: %d, ip: %s)"
                         RETCODE, auth_dat[i].userid, auth_dat[i].account_id,
                         ip);
                    WFIFOSET (fd, 150 + strlen (auth_dat[i].memo));
                }
                else
                {
                    memcpy (WFIFOP (fd, 7), account_name, 24);
                    WFIFOW (fd, 148) = 0;
                    login_log
                        ("'ladmin': Attempt to obtain information (by the name) of an unknown account (account: %s, ip: %s)"
                         RETCODE, account_name, ip);
                    WFIFOSET (fd, 150);
                }
                RFIFOSKIP (fd, 26);
                break;

            case 0x7954:       // Request about information of an account (by account id)
                if (RFIFOREST (fd) < 6)
                    return 0;
                WFIFOW (fd, 0) = 0x7953;
                WFIFOL (fd, 2) = RFIFOL (fd, 2);
                memset (WFIFOP (fd, 7), '\0', 24);
                for (i = 0; i < auth_num; i++)
                {
                    if (auth_dat[i].account_id == RFIFOL (fd, 2))
                    {
                        login_log
                            ("'ladmin': Sending information of an account (request by the id; account: %s, id: %d, ip: %s)"
                             RETCODE, auth_dat[i].userid, RFIFOL (fd, 2), ip);
                        WFIFOB (fd, 6) =
                            (unsigned char) isGM (auth_dat[i].account_id);
                        memcpy (WFIFOP (fd, 7), auth_dat[i].userid, 24);
                        WFIFOB (fd, 31) = auth_dat[i].sex;
                        WFIFOL (fd, 32) = auth_dat[i].logincount;
                        WFIFOL (fd, 36) = auth_dat[i].state;
                        memcpy (WFIFOP (fd, 40), auth_dat[i].error_message,
                                20);
                        memcpy (WFIFOP (fd, 60), auth_dat[i].lastlogin, 24);
                        memcpy (WFIFOP (fd, 84), auth_dat[i].last_ip, 16);
                        memcpy (WFIFOP (fd, 100), auth_dat[i].email, 40);
                        WFIFOL (fd, 140) =
                            (unsigned long) auth_dat[i].connect_until_time;
                        WFIFOL (fd, 144) =
                            (unsigned long) auth_dat[i].ban_until_time;
                        WFIFOW (fd, 148) = strlen (auth_dat[i].memo);
                        if (auth_dat[i].memo[0])
                        {
                            memcpy (WFIFOP (fd, 150), auth_dat[i].memo,
                                    strlen (auth_dat[i].memo));
                        }
                        WFIFOSET (fd, 150 + strlen (auth_dat[i].memo));
                        break;
                    }
                }
                if (i == auth_num)
                {
                    login_log
                        ("'ladmin': Attempt to obtain information (by the id) of an unknown account (id: %d, ip: %s)"
                         RETCODE, RFIFOL (fd, 2), ip);
                    strncpy (WFIFOP (fd, 7), "", 24);
                    WFIFOW (fd, 148) = 0;
                    WFIFOSET (fd, 150);
                }
                RFIFOSKIP (fd, 6);
                break;

            case 0x7955:       // Request to reload GM file (no answer)
                login_log
                    ("'ladmin': Request to re-load GM configuration file (ip: %s)."
                     RETCODE, ip);
                read_gm_account ();
                // send GM accounts to all char-servers
                send_GM_accounts ();
                RFIFOSKIP (fd, 2);
                break;

            default:
            {
                FILE *logfp;
                char tmpstr[24];
                struct timeval tv;
                logfp = fopen_ (login_log_unknown_packets_filename, "a");
                if (logfp)
                {
                    gettimeofday (&tv, NULL);
                    strftime (tmpstr, 23, date_format, gmtime (&(tv.tv_sec)));
                    fprintf (logfp,
                             "%s.%03d: receiving of an unknown packet -> disconnection"
                             RETCODE, tmpstr, (int) tv.tv_usec / 1000);
                    fprintf (logfp,
                             "parse_admin: connection #%d (ip: %s), packet: 0x%x (with being read: %d)."
                             RETCODE, fd, ip, RFIFOW (fd, 0), RFIFOREST (fd));
                    fprintf (logfp, "Detail (in hex):" RETCODE);
                    fprintf (logfp,
                             "---- 00-01-02-03-04-05-06-07  08-09-0A-0B-0C-0D-0E-0F"
                             RETCODE);
                    memset (tmpstr, '\0', sizeof (tmpstr));
                    for (i = 0; i < RFIFOREST (fd); i++)
                    {
                        if ((i & 15) == 0)
                            fprintf (logfp, "%04X ", i);
                        fprintf (logfp, "%02x ", RFIFOB (fd, i));
                        if (RFIFOB (fd, i) > 0x1f)
                            tmpstr[i % 16] = RFIFOB (fd, i);
                        else
                            tmpstr[i % 16] = '.';
                        if ((i - 7) % 16 == 0)  // -8 + 1
                            fprintf (logfp, " ");
                        else if ((i + 1) % 16 == 0)
                        {
                            fprintf (logfp, " %s" RETCODE, tmpstr);
                            memset (tmpstr, '\0', sizeof (tmpstr));
                        }
                    }
                    if (i % 16 != 0)
                    {
                        for (j = i; j % 16 != 0; j++)
                        {
                            fprintf (logfp, "   ");
                            if ((j - 7) % 16 == 0)  // -8 + 1
                                fprintf (logfp, " ");
                        }
                        fprintf (logfp, " %s" RETCODE, tmpstr);
                    }
                    fprintf (logfp, RETCODE);
                    fclose_ (logfp);
                }
            }
                login_log
                    ("'ladmin': End of connection, unknown packet (ip: %s)"
                     RETCODE, ip);
                session[fd]->eof = 1;
                printf
                    ("Remote administration has been disconnected (unknown packet).\n");
                return 0;
        }
        //WFIFOW(fd,0) = 0x791f;
        //WFIFOSET(fd,2);
    }
    return 0;
}

//--------------------------------------------
// Test to know if an IP come from LAN or WAN.
//--------------------------------------------
int lan_ip_check (unsigned char *p)
{
    int  i;
    int  lancheck = 1;

//  printf("lan_ip_check: to compare: %d.%d.%d.%d, network: %d.%d.%d.%d/%d.%d.%d.%d\n",
//         p[0], p[1], p[2], p[3],
//         subneti[0], subneti[1], subneti[2], subneti[3],
//         subnetmaski[0], subnetmaski[1], subnetmaski[2], subnetmaski[3]);
    for (i = 0; i < 4; i++)
    {
        if ((subneti[i] & subnetmaski[i]) != (p[i] & subnetmaski[i]))
        {
            lancheck = 0;
            break;
        }
    }
    printf ("LAN test (result): %s source\033[0m.\n",
            (lancheck) ? "\033[1;36mLAN" : "\033[1;32mWAN");
    return lancheck;
}

//----------------------------------------------------------------------------------------
// Default packet parsing (normal players or administation/char-server connexion requests)
//----------------------------------------------------------------------------------------
int parse_login (int fd)
{
    struct mmo_account account;
    int  result, i, j;
    unsigned char *p = (unsigned char *) &session[fd]->client_addr.sin_addr;
    char ip[16];
    int  host_len;

    sprintf (ip, "%d.%d.%d.%d", p[0], p[1], p[2], p[3]);

    if (session[fd]->eof)
    {
        close (fd);
        delete_session (fd);
        return 0;
    }

    while (RFIFOREST (fd) >= 2)
    {
        if (display_parse_login == 1)
        {
            if (RFIFOW (fd, 0) == 0x64 || RFIFOW (fd, 0) == 0x01dd)
            {
                if (RFIFOREST (fd) >= ((RFIFOW (fd, 0) == 0x64) ? 55 : 47))
                    printf
                        ("parse_login: connection #%d, packet: 0x%x (with being read: %d), account: %s.\n",
                         fd, RFIFOW (fd, 0), RFIFOREST (fd), RFIFOP (fd, 6));
            }
            else if (RFIFOW (fd, 0) == 0x2710)
            {
                if (RFIFOREST (fd) >= 86)
                    printf
                        ("parse_login: connection #%d, packet: 0x%x (with being read: %d), server: %s.\n",
                         fd, RFIFOW (fd, 0), RFIFOREST (fd), RFIFOP (fd, 60));
            }
            else
                printf
                    ("parse_login: connection #%d, packet: 0x%x (with being read: %d).\n",
                     fd, RFIFOW (fd, 0), RFIFOREST (fd));
        }

        switch (RFIFOW (fd, 0))
        {
            case 0x200:        // New alive packet: structure: 0x200 <account.userid>.24B. used to verify if client is always alive.
                if (RFIFOREST (fd) < 26)
                    return 0;
                RFIFOSKIP (fd, 26);
                break;

            case 0x204:        // New alive packet: structure: 0x204 <encrypted.account.userid>.16B. (new ragexe from 22 june 2004)
                if (RFIFOREST (fd) < 18)
                    return 0;
                RFIFOSKIP (fd, 18);
                break;

            case 0x64:         // Ask connection of a client
            case 0x01dd:       // Ask connection of a client (encryption mode)
                if (RFIFOREST (fd) < ((RFIFOW (fd, 0) == 0x64) ? 55 : 47))
                    return 0;

                account.userid = RFIFOP (fd, 6);
                account.userid[23] = '\0';
                remove_control_chars (account.userid);
                account.passwd = RFIFOP (fd, 30);
                if (RFIFOW (fd, 0) == 0x64)
                {
                    account.passwd[23] = '\0';
                    remove_control_chars (account.passwd);
                }
#ifdef PASSWORDENC
                account.passwdenc =
                    (RFIFOW (fd, 0) == 0x64) ? 0 : PASSWORDENC;
#else
                account.passwdenc = 0;
#endif

                if (RFIFOW (fd, 0) == 0x64)
                {
                    login_log
                        ("Request for connection (non encryption mode) of %s (ip: %s)."
                         RETCODE, account.userid, ip);
                }
                else
                {
                    login_log
                        ("Request for connection (encryption mode) of %s (ip: %s)."
                         RETCODE, account.userid, ip);
                }

                if (!check_ip (session[fd]->client_addr.sin_addr.s_addr))
                {
                    login_log
                        ("Connection refused: IP isn't authorised (deny/allow, ip: %s)."
                         RETCODE, ip);
                    WFIFOW (fd, 0) = 0x6a;
                    WFIFOB (fd, 2) = 0x03;
                    WFIFOSET (fd, 3);
                    RFIFOSKIP (fd, (RFIFOW (fd, 0) == 0x64) ? 55 : 47);
                    break;
                }

                result = mmo_auth (&account, fd);
                if (result == -1)
                {
                    int  gm_level = isGM (account.account_id);
                    if (min_level_to_connect > gm_level)
                    {
                        login_log
                            ("Connection refused: the minimum GM level for connection is %d (account: %s, GM level: %d, ip: %s)."
                             RETCODE, min_level_to_connect, account.userid,
                             gm_level, ip);
                        WFIFOW (fd, 0) = 0x81;
                        WFIFOL (fd, 2) = 1; // 01 = Server closed
                        WFIFOSET (fd, 3);
                    }
                    else
                    {
                        int  version_2 = RFIFOB (fd, 54);   // version 2

                        if (gm_level)
                            printf
                                ("Connection of the GM (level:%d) account '%s' accepted.\n",
                                 gm_level, account.userid);
                        else
                            printf
                                ("Connection of the account '%s' accepted.\n",
                                 account.userid);

                        /*
                         * Add a 0x0063 packet, which contains the name of the update host.  The packet will only
                         * be sent if login_athena.conf contains a non-null entry for "update_host:"
                         *
                         * Because older clients cannot handle the 0x63 packet, we check the "version 2" value
                         * from the incoming 0x64 packet (the byte at offset 54).  If bit 0 of this is set,
                         * then the client can safely accept the 0x63 packet.  The "version 2" value is not
                         * otherwise used by eAthena.
                         */
                        if ((RFIFOW (fd, 0) == 0x64)
                            && (version_2 & VERSION_2_UPDATEHOST))
                        {
                            host_len = (int) strlen (update_host);
                            if (host_len > 0)
                            {
                                WFIFOW (fd, 0) = 0x63;
                                WFIFOW (fd, 2) = 4 + host_len;
                                memcpy (WFIFOP (fd, 4), update_host,
                                        host_len);
                                WFIFOSET (fd, 4 + host_len);
                            }
                        }

                        // Load list of char servers into outbound packet
                        server_num = 0;
                        if (version_2 && VERSION_2_SERVERORDER)
                            for (i = 0; i < MAX_SERVERS; i++)
                            {
                                if (server_fd[i] >= 0)
                                {
                                    if (lan_ip_check (p))
                                        WFIFOL (fd, 47 + server_num * 32) =
                                            inet_addr (lan_char_ip);
                                    else
                                        WFIFOL (fd, 47 + server_num * 32) =
                                            server[i].ip;
                                    WFIFOW (fd, 47 + server_num * 32 + 4) =
                                        server[i].port;
                                    memcpy (WFIFOP
                                            (fd, 47 + server_num * 32 + 6),
                                            server[i].name, 20);
                                    WFIFOW (fd, 47 + server_num * 32 + 26) =
                                        server[i].users;
                                    WFIFOW (fd, 47 + server_num * 32 + 28) =
                                        server[i].maintenance;
                                    WFIFOW (fd, 47 + server_num * 32 + 30) =
                                        server[i].new;
                                    server_num++;
                                }
                            }
                        else    // Send them in reverse, as the client defaults to the second (!) one
                            for (i = MAX_SERVERS - 1; i >= 0; i--)
                            {
                                if (server_fd[i] >= 0)
                                {
                                    if (lan_ip_check (p))
                                        WFIFOL (fd, 47 + server_num * 32) =
                                            inet_addr (lan_char_ip);
                                    else
                                        WFIFOL (fd, 47 + server_num * 32) =
                                            server[i].ip;
                                    WFIFOW (fd, 47 + server_num * 32 + 4) =
                                        server[i].port;
                                    memcpy (WFIFOP
                                            (fd, 47 + server_num * 32 + 6),
                                            server[i].name, 20);
                                    WFIFOW (fd, 47 + server_num * 32 + 26) =
                                        server[i].users;
                                    WFIFOW (fd, 47 + server_num * 32 + 28) =
                                        server[i].maintenance;
                                    WFIFOW (fd, 47 + server_num * 32 + 30) =
                                        server[i].new;
                                    server_num++;
                                }
                            }
                        // if at least 1 char-server
                        if (server_num > 0)
                        {
                            WFIFOW (fd, 0) = 0x69;
                            WFIFOW (fd, 2) = 47 + 32 * server_num;
                            WFIFOL (fd, 4) = account.login_id1;
                            WFIFOL (fd, 8) = account.account_id;
                            WFIFOL (fd, 12) = account.login_id2;
                            WFIFOL (fd, 16) = 0;    // in old version, that was for ip (not more used)
                            memcpy (WFIFOP (fd, 20), account.lastlogin, 24);    // in old version, that was for name (not more used)
                            WFIFOB (fd, 46) = account.sex;
                            WFIFOSET (fd, 47 + 32 * server_num);
                            if (auth_fifo_pos >= AUTH_FIFO_SIZE)
                                auth_fifo_pos = 0;
                            auth_fifo[auth_fifo_pos].account_id =
                                account.account_id;
                            auth_fifo[auth_fifo_pos].login_id1 =
                                account.login_id1;
                            auth_fifo[auth_fifo_pos].login_id2 =
                                account.login_id2;
                            auth_fifo[auth_fifo_pos].sex = account.sex;
                            auth_fifo[auth_fifo_pos].delflag = 0;
                            auth_fifo[auth_fifo_pos].ip =
                                session[fd]->client_addr.sin_addr.s_addr;
                            auth_fifo_pos++;
                            // if no char-server, don't send void list of servers, just disconnect the player with proper message
                        }
                        else
                        {
                            login_log
                                ("Connection refused: there is no char-server online (account: %s, ip: %s)."
                                 RETCODE, account.userid, ip);
                            WFIFOW (fd, 0) = 0x81;
                            WFIFOL (fd, 2) = 1; // 01 = Server closed
                            WFIFOSET (fd, 3);
                        }
                    }
                }
                else
                {
                    memset (WFIFOP (fd, 0), '\0', 23);
                    WFIFOW (fd, 0) = 0x6a;
                    WFIFOB (fd, 2) = result;
                    if (result == 6)
                    {           // 6 = Your are Prohibited to log in until %s
                        i = search_account_index (account.userid);
                        if (i != -1)
                        {
                            if (auth_dat[i].ban_until_time != 0)
                            {   // if account is banned, we send ban timestamp
                                char tmpstr[256];
                                strftime (tmpstr, 20, date_format,
                                          gmtime (&auth_dat
                                                  [i].ban_until_time));
                                tmpstr[19] = '\0';
                                memcpy (WFIFOP (fd, 3), tmpstr, 20);
                            }
                            else
                            {   // we send error message
                                memcpy (WFIFOP (fd, 3),
                                        auth_dat[i].error_message, 20);
                            }
                        }
                    }
                    WFIFOSET (fd, 23);
                }
                RFIFOSKIP (fd, (RFIFOW (fd, 0) == 0x64) ? 55 : 47);
                break;

            case 0x01db:       // Sending request of the coding key
            case 0x791a:       // Sending request of the coding key (administration packet)
            {
                struct login_session_data *ld;
                if (session[fd]->session_data)
                {
                    printf
                        ("login: abnormal request of MD5 key (already opened session).\n");
                    session[fd]->eof = 1;
                    return 0;
                }
                ld = session[fd]->session_data = calloc (sizeof (*ld), 1);
                if (!ld)
                {
                    printf
                        ("login: Request for md5 key: memory allocation failure (malloc)!\n");
                    session[fd]->eof = 1;
                    return 0;
                }
                if (RFIFOW (fd, 0) == 0x01db)
                {
                    login_log ("Sending request of the coding key (ip: %s)"
                               RETCODE, ip);
                }
                else
                {
                    login_log
                        ("'ladmin': Sending request of the coding key (ip: %s)"
                         RETCODE, ip);
                }
                // Creation of the coding key
                memset (ld->md5key, '\0', sizeof (ld->md5key));
                ld->md5keylen = rand () % 4 + 12;
                for (i = 0; i < ld->md5keylen; i++)
                    ld->md5key[i] = rand () % 255 + 1;

                RFIFOSKIP (fd, 2);
                WFIFOW (fd, 0) = 0x01dc;
                WFIFOW (fd, 2) = 4 + ld->md5keylen;
                memcpy (WFIFOP (fd, 4), ld->md5key, ld->md5keylen);
                WFIFOSET (fd, WFIFOW (fd, 2));
            }
                break;

            case 0x2710:       // Connection request of a char-server
                if (RFIFOREST (fd) < 86)
                    return 0;
                {
                    int  GM_value, len;
                    unsigned char *server_name;
                    account.userid = RFIFOP (fd, 2);
                    account.userid[23] = '\0';
                    remove_control_chars (account.userid);
                    account.passwd = RFIFOP (fd, 26);
                    account.passwd[23] = '\0';
                    remove_control_chars (account.passwd);
                    account.passwdenc = 0;
                    server_name = RFIFOP (fd, 60);
                    server_name[19] = '\0';
                    remove_control_chars (server_name);
                    login_log
                        ("Connection request of the char-server '%s' @ %d.%d.%d.%d:%d (ip: %s)"
                         RETCODE, server_name, RFIFOB (fd, 54), RFIFOB (fd,
                                                                        55),
                         RFIFOB (fd, 56), RFIFOB (fd, 57), RFIFOW (fd, 58),
                         ip);
                    result = mmo_auth (&account, fd);

                    if (result == -1 && account.sex == 2)
                    {
                        // If this is the main server, and we don't already have a main server
                        if (server_fd[0] <= 0
                            && strcmpi (server_name, main_server) == 0)
                        {
                            account.account_id = 0;
                        }
                        else
                        {
                            int  i;
                            for (i = 1; i < MAX_SERVERS; i++)
                            {
                                if (server_fd[i] <= 0)
                                {
                                    account.account_id = i;
                                    break;
                                }
                            }
                        }
                    }

                    if (result == -1 && account.sex == 2
                        && account.account_id < MAX_SERVERS
                        && server_fd[account.account_id] == -1)
                    {
                        login_log
                            ("Connection of the char-server '%s' accepted (account: %s, pass: %s, ip: %s)"
                             RETCODE, server_name, account.userid,
                             account.passwd, ip);
                        printf
                            ("Connection of the char-server '%s' accepted.\n",
                             server_name);
                        memset (&server[account.account_id], 0,
                                sizeof (struct mmo_char_server));
                        server[account.account_id].ip = RFIFOL (fd, 54);
                        server[account.account_id].port = RFIFOW (fd, 58);
                        memcpy (server[account.account_id].name, server_name,
                                20);
                        server[account.account_id].users = 0;
                        server[account.account_id].maintenance =
                            RFIFOW (fd, 82);
                        server[account.account_id].new = RFIFOW (fd, 84);
                        server_fd[account.account_id] = fd;
                        if (anti_freeze_enable)
                            server_freezeflag[account.account_id] = 5;  // Char-server anti-freeze system. Counter. 5 ok, 4...0 freezed
                        WFIFOW (fd, 0) = 0x2711;
                        WFIFOB (fd, 2) = 0;
                        WFIFOSET (fd, 3);
                        session[fd]->func_parse = parse_fromchar;
                        realloc_fifo (fd, FIFOSIZE_SERVERLINK,
                                      FIFOSIZE_SERVERLINK);
                        // send GM account to char-server
                        len = 4;
                        WFIFOW (fd, 0) = 0x2732;
                        for (i = 0; i < auth_num; i++)
                            // send only existing accounts. We can not create a GM account when server is online.
                            if ((GM_value =
                                 isGM (auth_dat[i].account_id)) > 0)
                            {
                                WFIFOL (fd, len) = auth_dat[i].account_id;
                                WFIFOB (fd, len + 4) =
                                    (unsigned char) GM_value;
                                len += 5;
                            }
                        WFIFOW (fd, 2) = len;
                        WFIFOSET (fd, len);
                    }
                    else
                    {
                        login_log
                            ("Connexion of the char-server '%s' REFUSED (account: %s, pass: %s, ip: %s)"
                             RETCODE, server_name, account.userid,
                             account.passwd, ip);
                        WFIFOW (fd, 0) = 0x2711;
                        WFIFOB (fd, 2) = 3;
                        WFIFOSET (fd, 3);
                    }
                }
                RFIFOSKIP (fd, 86);
                return 0;

            case 0x7530:       // Request of the server version
                login_log ("Sending of the server version (ip: %s)" RETCODE,
                           ip);
                WFIFOW (fd, 0) = 0x7531;
                WFIFOB (fd, 2) = -1;
                WFIFOB (fd, 3) = 'T';
                WFIFOB (fd, 4) = 'M';
                WFIFOB (fd, 5) = 'W';
                WFIFOB (fd, 6) = ' ';
                WFIFOB (fd, 7) = 'e';
                WFIFOW (fd, 8) = 'A';
                WFIFOSET (fd, 10);
                RFIFOSKIP (fd, 2);
                break;

            case 0x7532:       // Request to end connection
                login_log ("End of connection (ip: %s)" RETCODE, ip);
                session[fd]->eof = 1;
                return 0;

            case 0x7918:       // Request for administation login
                if (RFIFOREST (fd) < 4
                    || RFIFOREST (fd) < ((RFIFOW (fd, 2) == 0) ? 28 : 20))
                    return 0;
                WFIFOW (fd, 0) = 0x7919;
                WFIFOB (fd, 2) = 1;
                if (!check_ladminip
                    (session[fd]->client_addr.sin_addr.s_addr))
                {
                    login_log
                        ("'ladmin'-login: Connection in administration mode refused: IP isn't authorised (ladmin_allow, ip: %s)."
                         RETCODE, ip);
                }
                else
                {
                    struct login_session_data *ld = session[fd]->session_data;
                    if (RFIFOW (fd, 2) == 0)
                    {           // non encrypted password
                        unsigned char *password;
                        password = RFIFOP (fd, 4);
                        password[23] = '\0';
                        remove_control_chars (password);
                        // If remote administration is enabled and password sent by client matches password read from login server configuration file
                        if ((admin_state == 1)
                            && (strcmp (password, admin_pass) == 0))
                        {
                            login_log
                                ("'ladmin'-login: Connection in administration mode accepted (non encrypted password: %s, ip: %s)"
                                 RETCODE, password, ip);
                            printf
                                ("Connection of a remote administration accepted (non encrypted password).\n");
                            WFIFOB (fd, 2) = 0;
                            session[fd]->func_parse = parse_admin;
                        }
                        else if (admin_state != 1)
                            login_log
                                ("'ladmin'-login: Connection in administration mode REFUSED - remote administration is disabled (non encrypted password: %s, ip: %s)"
                                 RETCODE, password, ip);
                        else
                            login_log
                                ("'ladmin'-login: Connection in administration mode REFUSED - invalid password (non encrypted password: %s, ip: %s)"
                                 RETCODE, password, ip);
                    }
                    else
                    {           // encrypted password
                        if (!ld)
                            printf
                                ("'ladmin'-login: error! MD5 key not created/requested for an administration login.\n");
                        else
                        {
                            char md5str[64] = "", md5bin[32];
                            if (RFIFOW (fd, 2) == 1)
                            {
                                strncpy (md5str, ld->md5key, sizeof (ld->md5key));  // 20
                                strcat (md5str, admin_pass);    // 24
                            }
                            else if (RFIFOW (fd, 2) == 2)
                            {
                                strncpy (md5str, admin_pass, sizeof (admin_pass));  // 24
                                strcat (md5str, ld->md5key);    // 20
                            }
                            MD5_String2binary (md5str, md5bin);
                            // If remote administration is enabled and password hash sent by client matches hash of password read from login server configuration file
                            if ((admin_state == 1)
                                && (memcmp (md5bin, RFIFOP (fd, 4), 16) == 0))
                            {
                                login_log
                                    ("'ladmin'-login: Connection in administration mode accepted (encrypted password, ip: %s)"
                                     RETCODE, ip);
                                printf
                                    ("Connection of a remote administration accepted (encrypted password).\n");
                                WFIFOB (fd, 2) = 0;
                                session[fd]->func_parse = parse_admin;
                            }
                            else if (admin_state != 1)
                                login_log
                                    ("'ladmin'-login: Connection in administration mode REFUSED - remote administration is disabled (encrypted password, ip: %s)"
                                     RETCODE, ip);
                            else
                                login_log
                                    ("'ladmin'-login: Connection in administration mode REFUSED - invalid password (encrypted password, ip: %s)"
                                     RETCODE, ip);
                        }
                    }
                }
                WFIFOSET (fd, 3);
                RFIFOSKIP (fd, (RFIFOW (fd, 2) == 0) ? 28 : 20);
                break;

            default:
                if (save_unknown_packets)
                {
                    FILE *logfp;
                    char tmpstr[24];
                    struct timeval tv;
                    logfp = fopen_ (login_log_unknown_packets_filename, "a");
                    if (logfp)
                    {
                        gettimeofday (&tv, NULL);
                        strftime (tmpstr, 23, date_format,
                                  gmtime (&(tv.tv_sec)));
                        fprintf (logfp,
                                 "%s.%03d: receiving of an unknown packet -> disconnection"
                                 RETCODE, tmpstr, (int) tv.tv_usec / 1000);
                        fprintf (logfp,
                                 "parse_login: connection #%d (ip: %s), packet: 0x%x (with being read: %d)."
                                 RETCODE, fd, ip, RFIFOW (fd, 0),
                                 RFIFOREST (fd));
                        fprintf (logfp, "Detail (in hex):" RETCODE);
                        fprintf (logfp,
                                 "---- 00-01-02-03-04-05-06-07  08-09-0A-0B-0C-0D-0E-0F"
                                 RETCODE);
                        memset (tmpstr, '\0', sizeof (tmpstr));
                        for (i = 0; i < RFIFOREST (fd); i++)
                        {
                            if ((i & 15) == 0)
                                fprintf (logfp, "%04X ", i);
                            fprintf (logfp, "%02x ", RFIFOB (fd, i));
                            if (RFIFOB (fd, i) > 0x1f)
                                tmpstr[i % 16] = RFIFOB (fd, i);
                            else
                                tmpstr[i % 16] = '.';
                            if ((i - 7) % 16 == 0)  // -8 + 1
                                fprintf (logfp, " ");
                            else if ((i + 1) % 16 == 0)
                            {
                                fprintf (logfp, " %s" RETCODE, tmpstr);
                                memset (tmpstr, '\0', sizeof (tmpstr));
                            }
                        }
                        if (i % 16 != 0)
                        {
                            for (j = i; j % 16 != 0; j++)
                            {
                                fprintf (logfp, "   ");
                                if ((j - 7) % 16 == 0)  // -8 + 1
                                    fprintf (logfp, " ");
                            }
                            fprintf (logfp, " %s" RETCODE, tmpstr);
                        }
                        fprintf (logfp, RETCODE);
                        fclose_ (logfp);
                    }
                }
                login_log ("End of connection, unknown packet (ip: %s)"
                           RETCODE, ip);
                session[fd]->eof = 1;
                return 0;
        }
    }
    return 0;
}

//-------------------------------------------------
// Return numerical value of a switch configuration
// on/off, english, fran�ais, deutsch, espa�ol
//-------------------------------------------------
int config_switch (const char *str)
{
    if (strcmpi (str, "on") == 0 || strcmpi (str, "yes") == 0
        || strcmpi (str, "oui") == 0 || strcmpi (str, "ja") == 0
        || strcmpi (str, "si") == 0)
        return 1;
    if (strcmpi (str, "off") == 0 || strcmpi (str, "no") == 0
        || strcmpi (str, "non") == 0 || strcmpi (str, "nein") == 0)
        return 0;

    return atoi (str);
}

//----------------------------------
// Reading Lan Support configuration
//----------------------------------
int login_lan_config_read (const char *lancfgName)
{
    int  j;
    struct hostent *h = NULL;
    char line[1024], w1[1024], w2[1024];
    FILE *fp;

    // set default configuration
    strncpy (lan_char_ip, "127.0.0.1", sizeof (lan_char_ip));
    subneti[0] = 127;
    subneti[1] = 0;
    subneti[2] = 0;
    subneti[3] = 1;
    for (j = 0; j < 4; j++)
        subnetmaski[j] = 255;

    fp = fopen_ (lancfgName, "r");

    if (fp == NULL)
    {
        printf
            ("***WARNING: LAN Support configuration file is not found: %s\n",
             lancfgName);
        return 1;
    }

    printf ("---Start reading Lan Support configuration file\n");

    while (fgets (line, sizeof (line) - 1, fp))
    {
        if (line[0] == '/' && line[1] == '/')
            continue;

        line[sizeof (line) - 1] = '\0';
        if (sscanf (line, "%[^:]: %[^\r\n]", w1, w2) != 2)
            continue;

        remove_control_chars (w1);
        remove_control_chars (w2);
        if (strcmpi (w1, "lan_char_ip") == 0)
        {                       // Read Char-Server Lan IP Address
            h = gethostbyname (w2);
            if (h != NULL)
            {
                sprintf (lan_char_ip, "%d.%d.%d.%d",
                         (unsigned char) h->h_addr[0],
                         (unsigned char) h->h_addr[1],
                         (unsigned char) h->h_addr[2],
                         (unsigned char) h->h_addr[3]);
            }
            else
            {
                strncpy (lan_char_ip, w2, sizeof (lan_char_ip));
                lan_char_ip[sizeof (lan_char_ip) - 1] = '\0';
            }
            printf ("LAN IP of char-server: %s.\n", lan_char_ip);
        }
        else if (strcmpi (w1, "subnet") == 0)
        {                       // Read Subnetwork
            for (j = 0; j < 4; j++)
                subneti[j] = 0;
            h = gethostbyname (w2);
            if (h != NULL)
            {
                for (j = 0; j < 4; j++)
                    subneti[j] = (unsigned char) h->h_addr[j];
            }
            else
            {
                sscanf (w2, "%d.%d.%d.%d", &subneti[0], &subneti[1],
                        &subneti[2], &subneti[3]);
            }
            printf ("Sub-network of the char-server: %d.%d.%d.%d.\n",
                    subneti[0], subneti[1], subneti[2], subneti[3]);
        }
        else if (strcmpi (w1, "subnetmask") == 0)
        {                       // Read Subnetwork Mask
            for (j = 0; j < 4; j++)
                subnetmaski[j] = 255;
            h = gethostbyname (w2);
            if (h != NULL)
            {
                for (j = 0; j < 4; j++)
                    subnetmaski[j] = (unsigned char) h->h_addr[j];
            }
            else
            {
                sscanf (w2, "%d.%d.%d.%d", &subnetmaski[0], &subnetmaski[1],
                        &subnetmaski[2], &subnetmaski[3]);
            }
            printf ("Sub-network mask of the char-server: %d.%d.%d.%d.\n",
                    subnetmaski[0], subnetmaski[1], subnetmaski[2],
                    subnetmaski[3]);
        }
    }
    fclose_ (fp);

    // log the LAN configuration
    login_log ("The LAN configuration of the server is set:" RETCODE);
    login_log ("- with LAN IP of char-server: %s." RETCODE, lan_char_ip);
    login_log
        ("- with the sub-network of the char-server: %d.%d.%d.%d/%d.%d.%d.%d."
         RETCODE, subneti[0], subneti[1], subneti[2], subneti[3],
         subnetmaski[0], subnetmaski[1], subnetmaski[2], subnetmaski[3]);

    // sub-network check of the char-server
    {
        unsigned int a0, a1, a2, a3;
        unsigned char p[4];
        sscanf (lan_char_ip, "%d.%d.%d.%d", &a0, &a1, &a2, &a3);
        p[0] = a0;
        p[1] = a1;
        p[2] = a2;
        p[3] = a3;
        printf ("LAN test of LAN IP of the char-server: ");
        if (lan_ip_check (p) == 0)
        {
            printf
                ("\033[1;31m***ERROR: LAN IP of the char-server doesn't belong to the specified Sub-network\033[0m\n");
            login_log
                ("***ERROR: LAN IP of the char-server doesn't belong to the specified Sub-network."
                 RETCODE);
        }
    }

    printf ("---End reading of Lan Support configuration file\n");

    return 0;
}

//-----------------------------------
// Reading general configuration file
//-----------------------------------
int login_config_read (const char *cfgName)
{
    char line[1024], w1[1024], w2[1024];
    FILE *fp;

    fp = fopen_ (cfgName, "r");
    if (fp == NULL)
    {
        printf ("Configuration file (%s) not found.\n", cfgName);
        return 1;
    }

    printf ("---Start reading of Login Server configuration file (%s)\n",
            cfgName);
    while (fgets (line, sizeof (line) - 1, fp))
    {
        if (line[0] == '/' && line[1] == '/')
            continue;

        line[sizeof (line) - 1] = '\0';
        if (sscanf (line, "%[^:]: %[^\r\n]", w1, w2) == 2)
        {
            remove_control_chars (w1);
            remove_control_chars (w2);

            if (strcmpi (w1, "admin_state") == 0)
            {
                admin_state = config_switch (w2);
            }
            else if (strcmpi (w1, "admin_pass") == 0)
            {
                strncpy (admin_pass, w2, sizeof (admin_pass));
                admin_pass[sizeof (admin_pass) - 1] = '\0';
            }
            else if (strcmpi (w1, "ladminallowip") == 0)
            {
                if (strcmpi (w2, "clear") == 0)
                {
                    if (access_ladmin_allow)
                        free (access_ladmin_allow);
                    access_ladmin_allow = NULL;
                    access_ladmin_allownum = 0;
                }
                else
                {
                    if (strcmpi (w2, "all") == 0)
                    {
                        // reset all previous values
                        if (access_ladmin_allow)
                            free (access_ladmin_allow);
                        // set to all
                        access_ladmin_allow = calloc (ACO_STRSIZE, 1);
                        access_ladmin_allownum = 1;
                        access_ladmin_allow[0] = '\0';
                    }
                    else if (w2[0]
                             && !(access_ladmin_allownum == 1
                                  && access_ladmin_allow[0] == '\0'))
                    {           // don't add IP if already 'all'
                        if (access_ladmin_allow)
                            access_ladmin_allow =
                                realloc (access_ladmin_allow,
                                         (access_ladmin_allownum +
                                          1) * ACO_STRSIZE);
                        else
                            access_ladmin_allow = calloc (ACO_STRSIZE, 1);
                        strncpy (access_ladmin_allow +
                                 (access_ladmin_allownum++) * ACO_STRSIZE, w2,
                                 ACO_STRSIZE);
                        access_ladmin_allow[access_ladmin_allownum *
                                            ACO_STRSIZE - 1] = '\0';
                    }
                }
            }
            else if (strcmpi (w1, "gm_pass") == 0)
            {
                strncpy (gm_pass, w2, sizeof (gm_pass));
                gm_pass[sizeof (gm_pass) - 1] = '\0';
            }
            else if (strcmpi (w1, "level_new_gm") == 0)
            {
                level_new_gm = atoi (w2);
            }
            else if (strcmpi (w1, "new_account") == 0)
            {
                new_account_flag = config_switch (w2);
            }
            else if (strcmpi (w1, "login_port") == 0)
            {
                login_port = atoi (w2);
            }
            else if (strcmpi (w1, "account_filename") == 0)
            {
                strncpy (account_filename, w2, sizeof (account_filename));
                account_filename[sizeof (account_filename) - 1] = '\0';
            }
            else if (strcmpi (w1, "gm_account_filename") == 0)
            {
                strncpy (GM_account_filename, w2,
                         sizeof (GM_account_filename));
                GM_account_filename[sizeof (GM_account_filename) - 1] = '\0';
            }
            else if (strcmpi (w1, "gm_account_filename_check_timer") == 0)
            {
                gm_account_filename_check_timer = atoi (w2);
            }
            else if (strcmpi (w1, "login_log_filename") == 0)
            {
                strncpy (login_log_filename, w2, sizeof (login_log_filename));
                login_log_filename[sizeof (login_log_filename) - 1] = '\0';
            }
            else if (strcmpi (w1, "login_log_unknown_packets_filename") == 0)
            {
                strncpy (login_log_unknown_packets_filename, w2,
                         sizeof (login_log_unknown_packets_filename));
                login_log_unknown_packets_filename[sizeof
                                                   (login_log_unknown_packets_filename)
                                                   - 1] = '\0';
            }
            else if (strcmpi (w1, "save_unknown_packets") == 0)
            {
                save_unknown_packets = config_switch (w2);
            }
            else if (strcmpi (w1, "display_parse_login") == 0)
            {
                display_parse_login = config_switch (w2);   // 0: no, 1: yes
            }
            else if (strcmpi (w1, "display_parse_admin") == 0)
            {
                display_parse_admin = config_switch (w2);   // 0: no, 1: yes
            }
            else if (strcmpi (w1, "display_parse_fromchar") == 0)
            {
                display_parse_fromchar = config_switch (w2);    // 0: no, 1: yes (without packet 0x2714), 2: all packets
            }
            else if (strcmpi (w1, "date_format") == 0)
            {                   // note: never have more than 19 char for the date!
                switch (atoi (w2))
                {
                    case 0:
                        strcpy (date_format, "%d-%m-%Y %H:%M:%S");  // 31-12-2004 23:59:59
                        break;
                    case 1:
                        strcpy (date_format, "%m-%d-%Y %H:%M:%S");  // 12-31-2004 23:59:59
                        break;
                    case 2:
                        strcpy (date_format, "%Y-%d-%m %H:%M:%S");  // 2004-31-12 23:59:59
                        break;
                    case 3:
                        strcpy (date_format, "%Y-%m-%d %H:%M:%S");  // 2004-12-31 23:59:59
                        break;
                }
            }
            else if (strcmpi (w1, "min_level_to_connect") == 0)
            {
                min_level_to_connect = atoi (w2);
            }
            else if (strcmpi (w1, "add_to_unlimited_account") == 0)
            {
                add_to_unlimited_account = config_switch (w2);
            }
            else if (strcmpi (w1, "start_limited_time") == 0)
            {
                start_limited_time = atoi (w2);
            }
            else if (strcmpi (w1, "check_ip_flag") == 0)
            {
                check_ip_flag = config_switch (w2);
            }
            else if (strcmpi (w1, "order") == 0)
            {
                access_order = atoi (w2);
                if (strcmpi (w2, "deny,allow") == 0 ||
                    strcmpi (w2, "deny, allow") == 0)
                    access_order = ACO_DENY_ALLOW;
                if (strcmpi (w2, "allow,deny") == 0 ||
                    strcmpi (w2, "allow, deny") == 0)
                    access_order = ACO_ALLOW_DENY;
                if (strcmpi (w2, "mutual-failture") == 0 ||
                    strcmpi (w2, "mutual-failure") == 0)
                    access_order = ACO_MUTUAL_FAILTURE;
            }
            else if (strcmpi (w1, "allow") == 0)
            {
                if (strcmpi (w2, "clear") == 0)
                {
                    if (access_allow)
                        free (access_allow);
                    access_allow = NULL;
                    access_allownum = 0;
                }
                else
                {
                    if (strcmpi (w2, "all") == 0)
                    {
                        // reset all previous values
                        if (access_allow)
                            free (access_allow);
                        // set to all
                        access_allow = calloc (ACO_STRSIZE, 1);
                        access_allownum = 1;
                        access_allow[0] = '\0';
                    }
                    else if (w2[0]
                             && !(access_allownum == 1
                                  && access_allow[0] == '\0'))
                    {           // don't add IP if already 'all'
                        if (access_allow)
                            access_allow =
                                realloc (access_allow,
                                         (access_allownum + 1) * ACO_STRSIZE);
                        else
                            access_allow = calloc (ACO_STRSIZE, 1);
                        strncpy (access_allow +
                                 (access_allownum++) * ACO_STRSIZE, w2,
                                 ACO_STRSIZE);
                        access_allow[access_allownum * ACO_STRSIZE - 1] =
                            '\0';
                    }
                }
            }
            else if (strcmpi (w1, "deny") == 0)
            {
                if (strcmpi (w2, "clear") == 0)
                {
                    if (access_deny)
                        free (access_deny);
                    access_deny = NULL;
                    access_denynum = 0;
                }
                else
                {
                    if (strcmpi (w2, "all") == 0)
                    {
                        // reset all previous values
                        if (access_deny)
                            free (access_deny);
                        // set to all
                        access_deny = calloc (ACO_STRSIZE, 1);
                        access_denynum = 1;
                        access_deny[0] = '\0';
                    }
                    else if (w2[0]
                             && !(access_denynum == 1
                                  && access_deny[0] == '\0'))
                    {           // don't add IP if already 'all'
                        if (access_deny)
                            access_deny =
                                realloc (access_deny,
                                         (access_denynum + 1) * ACO_STRSIZE);
                        else
                            access_deny = calloc (ACO_STRSIZE, 1);
                        strncpy (access_deny +
                                 (access_denynum++) * ACO_STRSIZE, w2,
                                 ACO_STRSIZE);
                        access_deny[access_denynum * ACO_STRSIZE - 1] = '\0';
                    }
                }
            }
            else if (strcmpi (w1, "anti_freeze_enable") == 0)
            {
                anti_freeze_enable = config_switch (w2);
            }
            else if (strcmpi (w1, "anti_freeze_interval") == 0)
            {
                ANTI_FREEZE_INTERVAL = atoi (w2);
                if (ANTI_FREEZE_INTERVAL < 5)
                    ANTI_FREEZE_INTERVAL = 5;   // minimum 5 seconds
            }
            else if (strcmpi (w1, "import") == 0)
            {
                login_config_read (w2);
            }
            else if (strcmpi (w1, "update_host") == 0)
            {
                strncpy (update_host, w2, sizeof (update_host));
                update_host[sizeof (update_host) - 1] = '\0';
            }
            else if (strcmpi (w1, "main_server") == 0)
            {
                strncpy (main_server, w2, sizeof (main_server));
                main_server[sizeof (main_server) - 1] = '\0';
            }
        }
    }
    fclose_ (fp);

    printf ("---End reading of Login Server configuration file.\n");

    return 0;
}

//-------------------------------------
// Displaying of configuration warnings
//-------------------------------------
void display_conf_warnings (void)
{
    if (admin_state != 0 && admin_state != 1)
    {
        printf
            ("***WARNING: Invalid value for admin_state parameter -> set to 0 (no remote admin).\n");
        admin_state = 0;
    }

    if (admin_state == 1)
    {
        if (admin_pass[0] == '\0')
        {
            printf
                ("***WARNING: Administrator password is void (admin_pass).\n");
        }
        else if (strcmp (admin_pass, "admin") == 0)
        {
            printf
                ("***WARNING: You are using the default administrator password (admin_pass).\n");
            printf ("            We highly recommend that you change it.\n");
        }
    }

    if (gm_pass[0] == '\0')
    {
        printf ("***WARNING: 'To GM become' password is void (gm_pass).\n");
        printf
            ("            We highly recommend that you set one password.\n");
    }
    else if (strcmp (gm_pass, "gm") == 0)
    {
        printf
            ("***WARNING: You are using the default GM password (gm_pass).\n");
        printf ("            We highly recommend that you change it.\n");
    }

    if (level_new_gm < 0 || level_new_gm > 99)
    {
        printf
            ("***WARNING: Invalid value for level_new_gm parameter -> set to 60 (default).\n");
        level_new_gm = 60;
    }

    if (new_account_flag != 0 && new_account_flag != 1)
    {
        printf
            ("***WARNING: Invalid value for new_account parameter -> set to 0 (no new account).\n");
        new_account_flag = 0;
    }

    if (login_port < 1024 || login_port > 65535)
    {
        printf
            ("***WARNING: Invalid value for login_port parameter -> set to 6900 (default).\n");
        login_port = 6900;
    }

    if (gm_account_filename_check_timer < 0)
    {
        printf
            ("***WARNING: Invalid value for gm_account_filename_check_timer parameter.\n");
        printf ("            -> set to 15 sec (default).\n");
        gm_account_filename_check_timer = 15;
    }
    else if (gm_account_filename_check_timer == 1)
    {
        printf
            ("***WARNING: Invalid value for gm_account_filename_check_timer parameter.\n");
        printf ("            -> set to 2 sec (minimum value).\n");
        gm_account_filename_check_timer = 2;
    }

    if (save_unknown_packets != 0 && save_unknown_packets != 1)
    {
        printf
            ("WARNING: Invalid value for save_unknown_packets parameter -> set to 0-no save.\n");
        save_unknown_packets = 0;
    }

    if (display_parse_login != 0 && display_parse_login != 1)
    {                           // 0: no, 1: yes
        printf
            ("***WARNING: Invalid value for display_parse_login parameter\n");
        printf ("            -> set to 0 (no display).\n");
        display_parse_login = 0;
    }

    if (display_parse_admin != 0 && display_parse_admin != 1)
    {                           // 0: no, 1: yes
        printf
            ("***WARNING: Invalid value for display_parse_admin parameter\n");
        printf ("            -> set to 0 (no display).\n");
        display_parse_admin = 0;
    }

    if (display_parse_fromchar < 0 || display_parse_fromchar > 2)
    {                           // 0: no, 1: yes (without packet 0x2714), 2: all packets
        printf
            ("***WARNING: Invalid value for display_parse_fromchar parameter\n");
        printf ("            -> set to 0 (no display).\n");
        display_parse_fromchar = 0;
    }

    if (min_level_to_connect < 0)
    {                           // 0: all players, 1-99 at least gm level x
        printf
            ("***WARNING: Invalid value for min_level_to_connect (%d) parameter\n",
             min_level_to_connect);
        printf ("            -> set to 0 (any player).\n");
        min_level_to_connect = 0;
    }
    else if (min_level_to_connect > 99)
    {                           // 0: all players, 1-99 at least gm level x
        printf
            ("***WARNING: Invalid value for min_level_to_connect (%d) parameter\n",
             min_level_to_connect);
        printf ("            -> set to 99 (only GM level 99).\n");
        min_level_to_connect = 99;
    }

    if (add_to_unlimited_account != 0 && add_to_unlimited_account != 1)
    {                           // 0: no, 1: yes
        printf
            ("***WARNING: Invalid value for add_to_unlimited_account parameter\n");
        printf
            ("            -> set to 0 (impossible to add a time to an unlimited account).\n");
        add_to_unlimited_account = 0;
    }

    if (start_limited_time < -1)
    {                           // -1: create unlimited account, 0 or more: additionnal sec from now to create limited time
        printf
            ("***WARNING: Invalid value for start_limited_time parameter\n");
        printf
            ("            -> set to -1 (new accounts are created with unlimited time).\n");
        start_limited_time = -1;
    }

    if (check_ip_flag != 0 && check_ip_flag != 1)
    {                           // 0: no, 1: yes
        printf ("***WARNING: Invalid value for check_ip_flag parameter\n");
        printf
            ("            -> set to 1 (check players ip between login-server & char-server).\n");
        check_ip_flag = 1;
    }

    if (access_order == ACO_DENY_ALLOW)
    {
        if (access_denynum == 1 && access_deny[0] == '\0')
        {
            printf
                ("***WARNING: The IP security order is 'deny,allow' (allow if not deny).\n");
            printf ("            And you refuse ALL IP.\n");
        }
    }
    else if (access_order == ACO_ALLOW_DENY)
    {
        if (access_allownum == 0)
        {
            printf
                ("***WARNING: The IP security order is 'allow,deny' (deny if not allow).\n");
            printf ("            But, NO IP IS AUTHORISED!\n");
        }
    }
    else
    {                           // ACO_MUTUAL_FAILTURE
        if (access_allownum == 0)
        {
            printf
                ("***WARNING: The IP security order is 'mutual-failture'\n");
            printf
                ("            (allow if in the allow list and not in the deny list).\n");
            printf ("            But, NO IP IS AUTHORISED!\n");
        }
        else if (access_denynum == 1 && access_deny[0] == '\0')
        {
            printf ("***WARNING: The IP security order is mutual-failture\n");
            printf
                ("            (allow if in the allow list and not in the deny list).\n");
            printf ("            But, you refuse ALL IP!\n");
        }
    }

    return;
}

//-------------------------------
// Save configuration in log file
//-------------------------------
void save_config_in_log (void)
{
    int  i;

    // a newline in the log...
    login_log ("");
    login_log ("The login-server starting..." RETCODE);

    // save configuration in log file
    login_log ("The configuration of the server is set:" RETCODE);

    if (admin_state != 1)
        login_log ("- with no remote administration." RETCODE);
    else if (admin_pass[0] == '\0')
        login_log ("- with a remote administration with a VOID password."
                   RETCODE);
    else if (strcmp (admin_pass, "admin") == 0)
        login_log ("- with a remote administration with the DEFAULT password."
                   RETCODE);
    else
        login_log
            ("- with a remote administration with the password of %d character(s)."
             RETCODE, strlen (admin_pass));
    if (access_ladmin_allownum == 0
        || (access_ladmin_allownum == 1 && access_ladmin_allow[0] == '\0'))
    {
        login_log ("- to accept any IP for remote administration" RETCODE);
    }
    else
    {
        login_log ("- to accept following IP for remote administration:"
                   RETCODE);
        for (i = 0; i < access_ladmin_allownum; i++)
            login_log ("  %s" RETCODE,
                       (char *) (access_ladmin_allow + i * ACO_STRSIZE));
    }

    if (gm_pass[0] == '\0')
        login_log ("- with a VOID 'To GM become' password (gm_pass)."
                   RETCODE);
    else if (strcmp (gm_pass, "gm") == 0)
        login_log ("- with the DEFAULT 'To GM become' password (gm_pass)."
                   RETCODE);
    else
        login_log
            ("- with a 'To GM become' password (gm_pass) of %d character(s)."
             RETCODE, strlen (gm_pass));
    if (level_new_gm == 0)
        login_log ("- to refuse any creation of GM with @gm." RETCODE);
    else
        login_log ("- to create GM with level '%d' when @gm is used." RETCODE,
                   level_new_gm);

    if (new_account_flag == 1)
        login_log ("- to ALLOW new users (with _F/_M)." RETCODE);
    else
        login_log ("- to NOT ALLOW new users (with _F/_M)." RETCODE);
    login_log ("- with port: %d." RETCODE, login_port);
    login_log ("- with the accounts file name: '%s'." RETCODE,
               account_filename);
    login_log ("- with the GM accounts file name: '%s'." RETCODE,
               GM_account_filename);
    if (gm_account_filename_check_timer == 0)
        login_log ("- to NOT check GM accounts file modifications." RETCODE);
    else
        login_log
            ("- to check GM accounts file modifications every %d seconds."
             RETCODE, gm_account_filename_check_timer);

    // not necessary to log the 'login_log_filename', we are inside :)

    login_log ("- with the unknown packets file name: '%s'." RETCODE,
               login_log_unknown_packets_filename);
    if (save_unknown_packets)
        login_log ("- to SAVE all unkown packets." RETCODE);
    else
        login_log
            ("- to SAVE only unkown packets sending by a char-server or a remote administration."
             RETCODE);
    if (display_parse_login)
        login_log ("- to display normal parse packets on console." RETCODE);
    else
        login_log ("- to NOT display normal parse packets on console."
                   RETCODE);
    if (display_parse_admin)
        login_log ("- to display administration parse packets on console."
                   RETCODE);
    else
        login_log ("- to NOT display administration parse packets on console."
                   RETCODE);
    if (display_parse_fromchar)
        login_log ("- to display char-server parse packets on console."
                   RETCODE);
    else
        login_log ("- to NOT display char-server parse packets on console."
                   RETCODE);

    if (min_level_to_connect == 0)  // 0: all players, 1-99 at least gm level x
        login_log ("- with no minimum level for connection." RETCODE);
    else if (min_level_to_connect == 99)
        login_log ("- to accept only GM with level 99." RETCODE);
    else
        login_log ("- to accept only GM with level %d or more." RETCODE,
                   min_level_to_connect);

    if (add_to_unlimited_account)
        login_log
            ("- to authorize adjustment (with timeadd ladmin) on an unlimited account."
             RETCODE);
    else
        login_log
            ("- to refuse adjustment (with timeadd ladmin) on an unlimited account. You must use timeset (ladmin command) before."
             RETCODE);

    if (start_limited_time < 0)
        login_log ("- to create new accounts with an unlimited time."
                   RETCODE);
    else if (start_limited_time == 0)
        login_log
            ("- to create new accounts with a limited time: time of creation."
             RETCODE);
    else
        login_log
            ("- to create new accounts with a limited time: time of creation + %d second(s)."
             RETCODE, start_limited_time);

    if (check_ip_flag)
        login_log
            ("- with control of players IP between login-server and char-server."
             RETCODE);
    else
        login_log
            ("- to not check players IP between login-server and char-server."
             RETCODE);

    if (access_order == ACO_DENY_ALLOW)
    {
        if (access_denynum == 0)
        {
            login_log
                ("- with the IP security order: 'deny,allow' (allow if not deny). You refuse no IP."
                 RETCODE);
        }
        else if (access_denynum == 1 && access_deny[0] == '\0')
        {
            login_log
                ("- with the IP security order: 'deny,allow' (allow if not deny). You refuse ALL IP."
                 RETCODE);
        }
        else
        {
            login_log
                ("- with the IP security order: 'deny,allow' (allow if not deny). Refused IP are:"
                 RETCODE);
            for (i = 0; i < access_denynum; i++)
                login_log ("  %s" RETCODE,
                           (char *) (access_deny + i * ACO_STRSIZE));
        }
    }
    else if (access_order == ACO_ALLOW_DENY)
    {
        if (access_allownum == 0)
        {
            login_log
                ("- with the IP security order: 'allow,deny' (deny if not allow). But, NO IP IS AUTHORISED!"
                 RETCODE);
        }
        else if (access_allownum == 1 && access_allow[0] == '\0')
        {
            login_log
                ("- with the IP security order: 'allow,deny' (deny if not allow). You authorise ALL IP."
                 RETCODE);
        }
        else
        {
            login_log
                ("- with the IP security order: 'allow,deny' (deny if not allow). Authorised IP are:"
                 RETCODE);
            for (i = 0; i < access_allownum; i++)
                login_log ("  %s" RETCODE,
                           (char *) (access_allow + i * ACO_STRSIZE));
        }
    }
    else
    {                           // ACO_MUTUAL_FAILTURE
        login_log
            ("- with the IP security order: 'mutual-failture' (allow if in the allow list and not in the deny list)."
             RETCODE);
        if (access_allownum == 0)
        {
            login_log ("  But, NO IP IS AUTHORISED!" RETCODE);
        }
        else if (access_denynum == 1 && access_deny[0] == '\0')
        {
            login_log ("  But, you refuse ALL IP!" RETCODE);
        }
        else
        {
            if (access_allownum == 1 && access_allow[0] == '\0')
            {
                login_log ("  You authorise ALL IP." RETCODE);
            }
            else
            {
                login_log ("  Authorised IP are:" RETCODE);
                for (i = 0; i < access_allownum; i++)
                    login_log ("    %s" RETCODE,
                               (char *) (access_allow + i * ACO_STRSIZE));
            }
            login_log ("  Refused IP are:" RETCODE);
            for (i = 0; i < access_denynum; i++)
                login_log ("    %s" RETCODE,
                           (char *) (access_deny + i * ACO_STRSIZE));
        }
    }
}

//--------------------------------------
// Function called at exit of the server
//--------------------------------------
void do_final (void)
{
    int  i, fd;

    mmo_auth_sync ();

    free (auth_dat);
    free (gm_account_db);
    for (i = 0; i < MAX_SERVERS; i++)
    {
        if ((fd = server_fd[i]) >= 0)
            delete_session (fd);
    }
    delete_session (login_fd);

    login_log
        ("----End of login-server (normal end with closing of all files)."
         RETCODE);
}

//------------------------------
// Main function of login-server
//------------------------------
int do_init (int argc, char **argv)
{
    int  i, j;

    // read login-server configuration
    login_config_read ((argc > 1) ? argv[1] : LOGIN_CONF_NAME);
    display_conf_warnings ();   // not in login_config_read, because we can use 'import' option, and display same message twice or more
    save_config_in_log ();      // not before, because log file name can be changed
    login_lan_config_read ((argc > 1) ? argv[1] : LAN_CONF_NAME);

    for (i = 0; i < AUTH_FIFO_SIZE; i++)
        auth_fifo[i].delflag = 1;
    for (i = 0; i < MAX_SERVERS; i++)
        server_fd[i] = -1;

    gm_account_db = numdb_init ();

    read_gm_account ();
    mmo_auth_init ();
    set_termfunc (mmo_auth_sync);
    set_defaultparse (parse_login);
    login_fd = make_listen_port (login_port);

    add_timer_func_list (check_auth_sync, "check_auth_sync");

    // Trigger auth sync every 5 minutes
    i = add_timer_interval (gettick () + 300000, check_auth_sync, 0, 0, 300000);

    if (anti_freeze_enable > 0)
    {
        add_timer_func_list (char_anti_freeze_system,
                             "char_anti_freeze_system");
        i = add_timer_interval (gettick () + 1000, char_anti_freeze_system, 0,
                                0, ANTI_FREEZE_INTERVAL * 1000);
    }

    // add timer to check GM accounts file modification
    j = gm_account_filename_check_timer;
    if (j == 0)                 // if we would not to check, we check every 60 sec, just to have timer (if we change timer, is was not necessary to check if timer already exists)
        j = 60;
    add_timer_func_list (check_GM_file, "check_GM_file");
    i = add_timer_interval (gettick () + j * 1000, check_GM_file, 0, 0, j * 1000);  // every x sec we check if gm file has been changed

    login_log
        ("The login-server is ready (Server is listening on the port %d)."
         RETCODE, login_port);

    printf
        ("The login-server is \033[1;32mready\033[0m (Server is listening on the port %d).\n\n",
         login_port);

    atexit (do_final);
    return 0;
}