summaryrefslogtreecommitdiff
path: root/src/common/socket.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/common/socket.c')
-rw-r--r--src/common/socket.c595
1 files changed, 595 insertions, 0 deletions
diff --git a/src/common/socket.c b/src/common/socket.c
new file mode 100644
index 000000000..4afcf50d4
--- /dev/null
+++ b/src/common/socket.c
@@ -0,0 +1,595 @@
+// original : core.c 2003/02/26 18:03:12 Rev 1.7
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+
+#ifdef _WIN32
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <winsock2.h>
+#else
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+#include <net/if.h>
+#include <sys/time.h>
+#include <unistd.h>
+#include <sys/ioctl.h>
+#endif
+
+#include <fcntl.h>
+#include <string.h>
+
+#include "mmo.h" // [Valaris] thanks to fov
+#include "socket.h"
+#include "utils.h"
+
+#ifdef MEMWATCH
+#include "memwatch.h"
+#endif
+
+fd_set readfds;
+int fd_max;
+
+int rfifo_size = 65536;
+int wfifo_size = 65536;
+
+#ifndef TCP_FRAME_LEN
+#define TCP_FRAME_LEN 1053
+#endif
+
+struct socket_data *session[FD_SETSIZE];
+
+static int null_parse(int fd);
+static int (*default_func_parse)(int) = null_parse;
+
+static int null_console_parse(char *buf);
+static int (*default_console_parse)(char*) = null_console_parse;
+
+/*======================================
+ * CORE : Set function
+ *--------------------------------------
+ */
+void set_defaultparse(int (*defaultparse)(int))
+{
+ default_func_parse = defaultparse;
+}
+
+#ifdef NSOCKET
+static void setsocketopts(int fd)
+{
+ int yes = 1; // reuse fix
+
+ setsockopt(fd,SOL_SOCKET,SO_REUSEADDR,(char *)&yes,sizeof yes);
+#ifdef SO_REUSEPORT
+ setsockopt(fd,SOL_SOCKET,SO_REUSEPORT,(char *)&yes,sizeof yes);
+#endif
+ setsockopt(fd,IPPROTO_TCP,TCP_NODELAY,(char *)&yes,sizeof yes);
+
+ setsockopt(fd, SOL_SOCKET, SO_SNDBUF, (char *) &wfifo_size , sizeof(rfifo_size ));
+ setsockopt(fd, SOL_SOCKET, SO_RCVBUF, (char *) &rfifo_size , sizeof(rfifo_size ));
+}
+
+#endif /* NSOCKET */
+/*======================================
+ * CORE : Socket Sub Function
+ *--------------------------------------
+ */
+
+static int recv_to_fifo(int fd)
+{
+ int len;
+
+ //printf("recv_to_fifo : %d %d\n",fd,session[fd]->eof);
+ if(session[fd]->eof)
+ return -1;
+
+
+#ifdef _WIN32
+ len=recv(fd,session[fd]->rdata+session[fd]->rdata_size, RFIFOSPACE(fd), 0);
+#else
+ len=read(fd,session[fd]->rdata+session[fd]->rdata_size,RFIFOSPACE(fd));
+#endif
+
+// printf (":::RECEIVE:::\n");
+// dump(session[fd]->rdata, len); printf ("\n");
+
+ //{ int i; printf("recv %d : ",fd); for(i=0;i<len;i++){ printf("%02x ",RFIFOB(fd,session[fd]->rdata_size+i)); } printf("\n");}
+ if(len>0){
+ session[fd]->rdata_size+=len;
+ } else if(len<=0){
+ // value of connection is not necessary the same
+// if (fd == 4) // Removed [Yor]
+// printf("Char-Server Has Disconnected.\n");
+// else if (fd == 5) // Removed [Yor]
+// printf("Attempt To Log In Successful.\n");
+// else if (fd == 7) // Removed [Yor]
+// printf("Char-Server Has Disconnected.\n");
+// else if (fd == 8) // Removed [Valaris]
+// printf("%s has logged off your server.\n",RFIFOP(fd,6)); // Removed [Valaris]
+
+// else if (fd != 8) // [Valaris]
+ printf("set eof : connection #%d\n", fd);
+ session[fd]->eof=1;
+ }
+ return 0;
+}
+
+static int send_from_fifo(int fd)
+{
+ int len;
+
+ //printf("send_from_fifo : %d\n",fd);
+ if(session[fd]->eof)
+ return -1;
+
+#ifdef _WIN32
+ len=send(fd, session[fd]->wdata,session[fd]->wdata_size, 0);
+#else
+ len=write(fd,session[fd]->wdata,session[fd]->wdata_size);
+#endif
+
+// printf (":::SEND:::\n");
+// dump(session[fd]->wdata, len); printf ("\n");
+
+ //{ int i; printf("send %d : ",fd); for(i=0;i<len;i++){ printf("%02x ",session[fd]->wdata[i]); } printf("\n");}
+ if(len>0){
+ if(len<session[fd]->wdata_size){
+ memmove(session[fd]->wdata,session[fd]->wdata+len,session[fd]->wdata_size-len);
+ session[fd]->wdata_size-=len;
+ } else {
+ session[fd]->wdata_size=0;
+ }
+ } else {
+ printf("set eof :%d\n",fd);
+ session[fd]->eof=1;
+ }
+ return 0;
+}
+
+static int null_parse(int fd)
+{
+ printf("null_parse : %d\n",fd);
+ RFIFOSKIP(fd,RFIFOREST(fd));
+ return 0;
+}
+
+/*======================================
+ * CORE : Socket Function
+ *--------------------------------------
+ */
+
+static int connect_client(int listen_fd)
+{
+ int fd;
+ struct sockaddr_in client_address;
+ int len;
+ int result;
+#ifndef NSOCKET
+ int yes = 1; // reuse fix
+#endif /* not NSOCKET */
+
+ //printf("connect_client : %d\n",listen_fd);
+
+ len=sizeof(client_address);
+
+ fd=accept(listen_fd,(struct sockaddr*)&client_address,&len);
+ if(fd_max<=fd) fd_max=fd+1;
+
+#ifndef NSOCKET
+ setsockopt(fd,SOL_SOCKET,SO_REUSEADDR,(char *)&yes,sizeof yes);
+#ifdef SO_REUSEPORT
+ setsockopt(fd,SOL_SOCKET,SO_REUSEPORT,(char *)&yes,sizeof yes);
+#endif
+ setsockopt(fd,IPPROTO_TCP,TCP_NODELAY,(char *)&yes,sizeof yes);
+#else /* NSOCKET */
+ setsocketopts(fd);
+#endif /* NSOCKET */
+
+ if(fd==-1)
+ perror("accept");
+ else
+ FD_SET(fd,&readfds);
+
+#ifdef _WIN32
+ {
+ unsigned long val = 1;
+ ioctlsocket(fd, FIONBIO, &val);
+ }
+#else
+ result = fcntl(fd, F_SETFL, O_NONBLOCK);
+#endif
+
+ CREATE(session[fd], struct socket_data, 1);
+ CREATE(session[fd]->rdata, char, rfifo_size);
+ CREATE(session[fd]->wdata, char, wfifo_size);
+
+ session[fd]->max_rdata = rfifo_size;
+ session[fd]->max_wdata = wfifo_size;
+ session[fd]->func_recv = recv_to_fifo;
+ session[fd]->func_send = send_from_fifo;
+ session[fd]->func_parse = default_func_parse;
+ session[fd]->client_addr = client_address;
+
+ //printf("new_session : %d %d\n",fd,session[fd]->eof);
+ return fd;
+}
+
+int make_listen_port(int port)
+{
+ struct sockaddr_in server_address;
+ int fd;
+ int result;
+#ifndef NSOCKET
+ int yes = 1; // reuse fix
+#endif /* not NSOCKET */
+
+ fd = socket( AF_INET, SOCK_STREAM, 0 );
+ if(fd_max<=fd) fd_max=fd+1;
+
+#ifdef _WIN32
+ {
+ unsigned long val = 1;
+ ioctlsocket(fd, FIONBIO, &val);
+ }
+#else
+ result = fcntl(fd, F_SETFL, O_NONBLOCK);
+#endif
+
+#ifndef NSOCKET
+ setsockopt(fd,SOL_SOCKET,SO_REUSEADDR,(char *)&yes,sizeof yes);
+#ifdef SO_REUSEPORT
+ setsockopt(fd,SOL_SOCKET,SO_REUSEPORT,(char *)&yes,sizeof yes);
+#endif
+ setsockopt(fd,IPPROTO_TCP,TCP_NODELAY,(char *)&yes,sizeof yes);
+#else /* NSOCKET */
+ setsocketopts(fd);
+#endif /* NSOCKET */
+
+ server_address.sin_family = AF_INET;
+ server_address.sin_addr.s_addr = htonl( INADDR_ANY );
+ server_address.sin_port = htons(port);
+
+ result = bind(fd, (struct sockaddr*)&server_address, sizeof(server_address));
+ if( result == -1 ) {
+ perror("bind");
+ exit(1);
+ }
+ result = listen( fd, 5 );
+ if( result == -1 ) { /* error */
+ perror("listen");
+ exit(1);
+ }
+
+ FD_SET(fd, &readfds );
+
+ CREATE(session[fd], struct socket_data, 1);
+
+ if(session[fd]==NULL){
+ printf("out of memory : make_listen_port\n");
+ exit(1);
+ }
+ memset(session[fd],0,sizeof(*session[fd]));
+ session[fd]->func_recv = connect_client;
+
+ return fd;
+}
+
+// Console Reciever [Wizputer]
+int console_recieve(int i) {
+ int n;
+ char *buf;
+
+ CREATE(buf, char , 64);
+
+ memset(buf,0,sizeof(64));
+
+ n = read(0, buf , 64);
+ if ( n < 0 )
+ printf("Console input read error\n");
+ else
+ session[0]->func_console(buf);
+ return 0;
+}
+
+void set_defaultconsoleparse(int (*defaultparse)(char*))
+{
+ default_console_parse = defaultparse;
+}
+
+static int null_console_parse(char *buf)
+{
+ printf("null_console_parse : %s\n",buf);
+ return 0;
+}
+
+// Console Input [Wizputer]
+int start_console(void) {
+ FD_SET(0,&readfds);
+
+ CREATE(session[0], struct socket_data, 1);
+ if(session[0]==NULL){
+ printf("out of memory : start_console\n");
+ exit(1);
+ }
+
+ memset(session[0],0,sizeof(*session[0]));
+
+ session[0]->func_recv = console_recieve;
+ session[0]->func_console = default_console_parse;
+
+ return 0;
+}
+
+int make_connection(long ip,int port)
+{
+ struct sockaddr_in server_address;
+ int fd;
+ int result;
+#ifndef NSOCKET
+ int yes = 1; // reuse fix
+#endif /* not NSOCKET */
+
+ fd = socket( AF_INET, SOCK_STREAM, 0 );
+#ifndef NSOCKET
+ if(fd_max<=fd) fd_max=fd+1;
+ setsockopt(fd,SOL_SOCKET,SO_REUSEADDR,(char *)&yes,sizeof yes);
+#ifdef SO_REUSEPORT
+ setsockopt(fd,SOL_SOCKET,SO_REUSEPORT,(char *)&yes,sizeof yes);
+#endif
+ setsockopt(fd,IPPROTO_TCP,TCP_NODELAY,(char *)&yes,sizeof yes);
+#else /* NSOCKET */
+ if(fd_max<=fd)
+ fd_max=fd+1;
+
+ setsocketopts(fd);
+#endif /* NSOCKET */
+
+ server_address.sin_family = AF_INET;
+ server_address.sin_addr.s_addr = ip;
+ server_address.sin_port = htons(port);
+
+#ifdef _WIN32
+ {
+ unsigned long val = 1;
+ ioctlsocket(fd, FIONBIO, &val);
+ }
+#else
+ result = fcntl(fd, F_SETFL, O_NONBLOCK);
+#endif
+
+ result = connect(fd, (struct sockaddr *)(&server_address),sizeof(struct sockaddr_in));
+
+ FD_SET(fd,&readfds);
+
+ CREATE(session[fd], struct socket_data, 1);
+ CREATE(session[fd]->rdata, char, rfifo_size);
+ CREATE(session[fd]->wdata, char, wfifo_size);
+
+ session[fd]->max_rdata = rfifo_size;
+ session[fd]->max_wdata = wfifo_size;
+ session[fd]->func_recv = recv_to_fifo;
+ session[fd]->func_send = send_from_fifo;
+ session[fd]->func_parse = default_func_parse;
+
+ return fd;
+}
+
+int delete_session(int fd)
+{
+ if(fd<0 || fd>=FD_SETSIZE)
+ return -1;
+ FD_CLR(fd,&readfds);
+ if(session[fd]){
+ if(session[fd]->rdata)
+ free(session[fd]->rdata);
+ if(session[fd]->wdata)
+ free(session[fd]->wdata);
+ if(session[fd]->session_data)
+ free(session[fd]->session_data);
+ free(session[fd]);
+ }
+ session[fd]=NULL;
+ //printf("delete_session:%d\n",fd);
+ return 0;
+}
+
+int realloc_fifo(int fd,int rfifo_size,int wfifo_size)
+{
+ struct socket_data *s=session[fd];
+ if( s->max_rdata != rfifo_size && s->rdata_size < rfifo_size){
+ RECREATE(s->rdata, char, rfifo_size);
+ s->max_rdata = rfifo_size;
+ }
+ if( s->max_wdata != wfifo_size && s->wdata_size < wfifo_size){
+ RECREATE(s->wdata, char, wfifo_size);
+ s->max_wdata = wfifo_size;
+ }
+ return 0;
+}
+
+int WFIFOSET(int fd,int len)
+{
+ struct socket_data *s=session[fd];
+#ifdef NSOCKET
+ if (s == NULL || s->wdata == NULL)
+ return 0;
+#endif /* NSOCKET */
+ if( s->wdata_size+len+16384 > s->max_wdata ){
+ unsigned char *sin_addr = (unsigned char *)&s->client_addr.sin_addr;
+ realloc_fifo(fd,s->max_rdata, s->max_wdata <<1 );
+ printf("socket: %d (%d.%d.%d.%d) wdata expanded to %d bytes.\n",fd, sin_addr[0], sin_addr[1], sin_addr[2], sin_addr[3], s->max_wdata);
+ }
+ s->wdata_size=(s->wdata_size+(len)+2048 < s->max_wdata) ?
+ s->wdata_size+len : (printf("socket: %d wdata lost !!\n",fd),s->wdata_size);
+#ifdef NSOCKET
+ if (s->wdata_size > (TCP_FRAME_LEN))
+ send_from_fifo(fd);
+#endif /* NSOCKET */
+ return 0;
+}
+
+int do_sendrecv(int next)
+{
+ fd_set rfd,wfd;
+ struct timeval timeout;
+ int ret,i;
+
+ rfd=readfds;
+ FD_ZERO(&wfd);
+ for(i=0;i<fd_max;i++){
+ if(!session[i] && FD_ISSET(i,&readfds)){
+ printf("force clr fds %d\n",i);
+ FD_CLR(i,&readfds);
+ continue;
+ }
+ if(!session[i])
+ continue;
+ if(session[i]->wdata_size)
+ FD_SET(i,&wfd);
+ }
+ timeout.tv_sec = next/1000;
+ timeout.tv_usec = next%1000*1000;
+ ret = select(fd_max,&rfd,&wfd,NULL,&timeout);
+ if(ret<=0)
+ return 0;
+ for(i=0;i<fd_max;i++){
+ if(!session[i])
+ continue;
+ if(FD_ISSET(i,&wfd)){
+ //printf("write:%d\n",i);
+ if(session[i]->func_send)
+ //send_from_fifo(i);
+ session[i]->func_send(i);
+ }
+ if(FD_ISSET(i,&rfd)){
+ //printf("read:%d\n",i);
+ if(session[i]->func_recv)
+ //recv_to_fifo(i);
+ session[i]->func_recv(i);
+ }
+ }
+ return 0;
+}
+
+int do_parsepacket(void)
+{
+ int i;
+ for(i=0;i<fd_max;i++){
+ if(!session[i])
+ continue;
+ if(session[i]->rdata_size==0 && session[i]->eof==0)
+ continue;
+ if(session[i]->func_parse){
+ session[i]->func_parse(i);
+ if(!session[i])
+ continue;
+ }
+ RFIFOFLUSH(i);
+ }
+ return 0;
+}
+
+void do_socket(void)
+{
+ FD_ZERO(&readfds);
+}
+
+int RFIFOSKIP(int fd,int len)
+{
+ struct socket_data *s=session[fd];
+
+ if (s->rdata_size-s->rdata_pos-len<0) {
+ fprintf(stderr,"too many skip\n");
+ exit(1);
+ }
+
+ s->rdata_pos = s->rdata_pos+len;
+
+ return 0;
+}
+
+
+unsigned int addr_[16]; // ip addresses of local host (host byte order)
+unsigned int naddr_ = 0; // # of ip addresses
+
+int Net_Init(void)
+{
+#ifdef _WIN32
+ char** a;
+ unsigned int i;
+ char fullhost[255];
+ struct hostent* hent;
+
+ /* Start up the windows networking */
+ WSADATA wsaData;
+
+ if ( WSAStartup(WINSOCK_VERSION, &wsaData) != 0 ) {
+ printf("SYSERR: WinSock not available!\n");
+ exit(1);
+ }
+
+ if(gethostname(fullhost, sizeof(fullhost)) == SOCKET_ERROR) {
+ printf("Ugg.. no hostname defined!\n");
+ return 0;
+ }
+
+ // XXX This should look up the local IP addresses in the registry
+ // instead of calling gethostbyname. However, the way IP addresses
+ // are stored in the registry is annoyingly complex, so I'll leave
+ // this as T.B.D.
+ hent = gethostbyname(fullhost);
+ if (hent == NULL) {
+ printf("Cannot resolve our own hostname to a IP address");
+ return 0;
+ }
+
+ a = hent->h_addr_list;
+ for(i = 0; a[i] != 0 && i < 16; ++i) {
+ unsigned long addr1 = ntohl(*(unsigned long*) a[i]);
+ addr_[i] = addr1;
+ }
+ naddr_ = i;
+#else
+ int pos;
+ int fdes = socket(AF_INET, SOCK_STREAM, 0);
+ char buf[16 * sizeof(struct ifreq)];
+ struct ifconf ic;
+
+ // The ioctl call will fail with Invalid Argument if there are more
+ // interfaces than will fit in the buffer
+ ic.ifc_len = sizeof(buf);
+ ic.ifc_buf = buf;
+ if(ioctl(fdes, SIOCGIFCONF, &ic) == -1) {
+ printf("SIOCGIFCONF failed!\n");
+ return 0;
+ }
+
+ for(pos = 0; pos < ic.ifc_len;)
+ {
+ struct ifreq * ir = (struct ifreq *) (ic.ifc_buf + pos);
+
+ struct sockaddr_in * a = (struct sockaddr_in *) &(ir->ifr_addr);
+
+ if(a->sin_family == AF_INET) {
+ u_long ad = ntohl(a->sin_addr.s_addr);
+ if(ad != INADDR_LOOPBACK) {
+ addr_[naddr_ ++] = ad;
+ if(naddr_ == 16)
+ break;
+ }
+ }
+
+#if defined(_AIX) || defined(__APPLE__)
+ pos += ir->ifr_addr.sa_len; // For when we port athena to run on Mac's :)
+ pos += sizeof(ir->ifr_name);
+#else
+ pos += sizeof(struct ifreq);
+#endif
+ }
+
+#endif
+
+ return(0);
+}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-15 16:04:18 +0000