unrealircd

- supernets unrealircd source & configuration
git clone git://git.acid.vegas/unrealircd.git
netinfo.c (4422B)
      1 /*
      2  *   IRC - Internet Relay Chat, src/modules/out.c
      3  *   (C) 2004 The UnrealIRCd Team
      4  *
      5  *   See file AUTHORS in IRC package for additional names of
      6  *   the programmers.
      7  *
      8  *   This program is free software; you can redistribute it and/or modify
      9  *   it under the terms of the GNU General Public License as published by
     10  *   the Free Software Foundation; either version 1, or (at your option)
     11  *   any later version.
     12  *
     13  *   This program is distributed in the hope that it will be useful,
     14  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
     15  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     16  *   GNU General Public License for more details.
     17  *
     18  *   You should have received a copy of the GNU General Public License
     19  *   along with this program; if not, write to the Free Software
     20  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
     21  */
     22 
     23 #include "unrealircd.h"
     24 
     25 CMD_FUNC(cmd_netinfo);
     26 
     27 #define MSG_NETINFO 	"NETINFO"	
     28 
     29 ModuleHeader MOD_HEADER
     30   = {
     31 	"netinfo",
     32 	"5.0",
     33 	"command /netinfo", 
     34 	"UnrealIRCd Team",
     35 	"unrealircd-6",
     36     };
     37 
     38 MOD_INIT()
     39 {
     40 	CommandAdd(modinfo->handle, MSG_NETINFO, cmd_netinfo, MAXPARA, CMD_SERVER);
     41 	MARK_AS_OFFICIAL_MODULE(modinfo);
     42 	return MOD_SUCCESS;
     43 }
     44 
     45 MOD_LOAD()
     46 {
     47 	return MOD_SUCCESS;
     48 }
     49 
     50 MOD_UNLOAD()
     51 {
     52 	return MOD_SUCCESS;
     53 }
     54 
     55 /** NETINFO: Share configuration settings with directly linked server.
     56  * Originally written by Stskeeps
     57  *
     58  * Technical documentation:
     59  * https://www.unrealircd.org/docs/Server_protocol:NETINFO_command
     60  *
     61  * parv[1] = max global count
     62  * parv[2] = time of end sync
     63  * parv[3] = unreal protocol using (numeric)
     64  * parv[4] = cloak key check (> u2302)
     65  * parv[5] = free(**)
     66  * parv[6] = free(**)
     67  * parv[7] = free(**)
     68  * parv[8] = network name
     69  */
     70 CMD_FUNC(cmd_netinfo)
     71 {
     72 	long 		lmax;
     73 	long 		endsync, protocol;
     74 	char		buf[512];
     75 
     76 	if (parc < 9)
     77 		return;
     78 
     79 	/* Only allow from directly connected servers */
     80 	if (!MyConnect(client))
     81 		return;
     82 
     83 	if (IsNetInfo(client))
     84 	{
     85 		unreal_log(ULOG_WARNING, "link", "NETINFO_ALREADY_RECEIVED", client,
     86 		           "Got NETINFO from server $client, but we already received it earlier!");
     87 		return;
     88 	}
     89 
     90 	/* is a long therefore not ATOI */
     91 	lmax = atol(parv[1]);
     92 	endsync = atol(parv[2]);
     93 	protocol = atol(parv[3]);
     94 
     95 	/* max global count != max_global_count --sts */
     96 	if (lmax > irccounts.global_max)
     97 	{
     98 		irccounts.global_max = lmax;
     99 		unreal_log(ULOG_INFO, "link", "NEW_GLOBAL_RECORD", client,
    100 		           "Record global users is now $record_global_users (set by server $client)",
    101 		           log_data_integer("record_global_users", lmax));
    102 	}
    103 
    104 	unreal_log(ULOG_INFO, "link", "SERVER_SYNCED", client,
    105 	           "Link $client -> $me is now synced "
    106 	           "[secs: $synced_after_seconds, recv: $received_bytes, sent: $sent_bytes]",
    107 	           log_data_client("me", &me),
    108 	           log_data_integer("synced_after_seconds", TStime() - endsync),
    109 	           log_data_integer("received_bytes", client->local->traffic.bytes_received),
    110 	           log_data_integer("sent_bytes", client->local->traffic.bytes_sent));
    111 
    112 	if (!(strcmp(NETWORK_NAME, parv[8]) == 0))
    113 	{
    114 		unreal_log(ULOG_WARNING, "link", "NETWORK_NAME_MISMATCH", client,
    115 		           "Network name mismatch: server $client has '$their_network_name', "
    116 		           "server $me has '$our_network_name'.",
    117 		           log_data_client("me", &me),
    118 		           log_data_string("their_network_name", parv[8]),
    119 		           log_data_string("our_network_name", NETWORK_NAME));
    120 	}
    121 
    122 	if ((protocol != UnrealProtocol) && (protocol != 0))
    123 	{
    124 		unreal_log(ULOG_INFO, "link", "LINK_PROTOCOL_MISMATCH", client,
    125 		           "Server $client is running UnrealProtocol $their_link_protocol, "
    126 		           "server $me uses $our_link_protocol.",
    127 		           log_data_client("me", &me),
    128 		           log_data_integer("their_link_protocol", protocol),
    129 		           log_data_integer("our_link_protocol", UnrealProtocol));
    130 	}
    131 	strlcpy(buf, CLOAK_KEY_CHECKSUM, sizeof(buf));
    132 	if (*parv[4] != '*' && strcmp(buf, parv[4]))
    133 	{
    134 		unreal_log(ULOG_WARNING, "link", "CLOAK_KEY_MISMATCH", client,
    135 		           "Server $client has a DIFFERENT CLOAK KEY (OR METHOD)!!! You should fix this ASAP!\n"
    136 		           "When the cloaking configuration is different on servers, this will cause "
    137 		           "channel bans on cloaked hosts/IPs not to work correctly, "
    138 		           "meaning users can bypass channel bans!");
    139 	}
    140 	SetNetInfo(client);
    141 }