subnet.conf overhaul

The subnet.conf system has been rewritten to offer greater flexibility,
and to fix some issues that appeared with 838321a36c79e71117320154c9b611c99e93af03.

It is now possible to enter, separately, LAN subnets:

- `lan_subnets`: This is essentially the same feature present in the old
  subnet.conf. Each entry in this list defines a (LAN, private) subnet
  the server is in. Clients connecting from the same subnet, will be
  redirected to the LAN IP rather than the default public IP. The format
  has been simplified, and it only requires one IP and one subnet mask (as
  opposed to a character and a map server IP).
- `allowed`: Allowed IPs are IP ranges a server (char to login or map to
  char) can connect from. Any attempt to connect as a server from an IP
  not included here, will fail. For convenience, a wildcard range
  (matching all possible IP addresses) has been provided
  (`0.0.0.0:0.0.0.0`), but it is very advisable to edit it to a more
  restrictive set.
- `trusted`: Trusted IPs are IP ranges excluded from the IPban checks.
  This may be useful, for example, to exclude the server's own IP from
  ipbans, in case of false positives. Any IP ranges added to this list are
  also implicitly included in the allowed IP ranges.

1 files changed, 2 insertions, 11 deletions

diff --git a/src/login/login.h b/src/login/login.h
index de504db07..6dc4c875b 100644
--- a/src/login/login.h
+++ b/src/login/login.h
@@ -101,14 +101,6 @@ struct Login_Config {
 
 	int client_hash_check;                          ///< flags for checking client md5
 	struct client_hash_node *client_hash_nodes;     ///< linked list containg md5 hash for each gm group
-
-	/// Advanced subnet check [LuzZza]
-	struct s_subnet {
-		uint32 mask;
-		uint32 char_ip;
-		uint32 map_ip;
-	} subnet[16];
-	int subnet_count;
 };
 
 struct login_auth_node {
@@ -163,8 +155,7 @@ struct login_interface {
 	int (*sync_ip_addresses) (int tid, int64 tick, int id, intptr_t data);
 	bool (*check_encrypted) (const char* str1, const char* str2, const char* passwd);
 	bool (*check_password) (const char* md5key, int passwdenc, const char* passwd, const char* refpass);
-	int (*lan_subnetcheck) (uint32 ip);
-	int (*lan_config_read) (const char *lancfgName);
+	uint32 (*lan_subnet_check) (uint32 ip);
 	void (*fromchar_accinfo) (int fd, int account_id, int u_fd, int u_aid, int u_group, int map_fd, struct mmo_account *acc);
 	void (*fromchar_account) (int fd, int account_id, struct mmo_account *acc);
 	void (*fromchar_account_update_other) (int account_id, unsigned int state);
@@ -207,7 +198,7 @@ struct login_interface {
 	void (*parse_request_connection) (int fd, struct login_session_data* sd, const char *ip, uint32 ipl);
 	int (*parse_login) (int fd);
 	char *LOGIN_CONF_NAME;
-	char *LAN_CONF_NAME;
+	char *NET_CONF_NAME; ///< Network configuration filename
 };
 
 struct login_interface *login;