X-Git-Url: https://arthur.barton.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fngircd%2Firc-server.c;h=cca295ac831dc486675f08778ec3d0de881a63ea;hb=b6f19ea8feceeb2246995222f03790e6f00b0dfd;hp=7236d9a9e98082da63b2310e2f773ec4e0494e7f;hpb=b545d38ae4458257be4de9031d4d3501690ced9c;p=ngircd-alex.git diff --git a/src/ngircd/irc-server.c b/src/ngircd/irc-server.c index 7236d9a9..cca295ac 100644 --- a/src/ngircd/irc-server.c +++ b/src/ngircd/irc-server.c @@ -7,13 +7,15 @@ * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * Please read the file COPYING, README and AUTHORS for more information. - * - * IRC commands for server links */ - #include "portab.h" +/** + * @file + * IRC commands for server links + */ + #include "imp.h" #include #include @@ -22,12 +24,10 @@ #include #include "defines.h" -#include "resolve.h" #include "conn.h" #include "conn-func.h" #include "conn-zip.h" #include "conf.h" -#include "client.h" #include "channel.h" #include "irc-write.h" #include "lists.h" @@ -37,6 +37,7 @@ #include "numeric.h" #include "ngircd.h" #include "irc-info.h" +#include "op.h" #include "exp.h" #include "irc-server.h" @@ -51,7 +52,6 @@ IRC_SERVER( CLIENT *Client, REQUEST *Req ) { char str[LINE_LEN]; CLIENT *from, *c; - bool ok; int i; CONN_ID con; @@ -97,25 +97,25 @@ IRC_SERVER( CLIENT *Client, REQUEST *Req ) /* Is this server registering on our side, or are we connecting to * a remote server? */ - con = Client_Conn( Client ); - if( Client_Token( Client ) != TOKEN_OUTBOUND ) - { + con = Client_Conn(Client); + if (Client_Token(Client) != TOKEN_OUTBOUND) { /* Incoming connection, send user/pass */ - ok = true; - if( ! IRC_WriteStrClient( Client, "PASS %s %s", Conf_Server[i].pwd_out, NGIRCd_ProtoID )) ok = false; - else ok = IRC_WriteStrClient( Client, "SERVER %s 1 :%s", Conf_ServerName, Conf_ServerInfo ); - if( ! ok ) - { - Conn_Close( con, "Unexpected server behavior!", NULL, false ); - return DISCONNECTED; + if (!IRC_WriteStrClient(Client, "PASS %s %s", + Conf_Server[i].pwd_out, + NGIRCd_ProtoID) + || !IRC_WriteStrClient(Client, "SERVER %s 1 :%s", + Conf_ServerName, + Conf_ServerInfo)) { + Conn_Close(con, "Unexpected server behavior!", + NULL, false); + return DISCONNECTED; } - Client_SetIntroducer( Client, Client ); - Client_SetToken( Client, 1 ); - } - else - { - /* outgoing connect, we already sent SERVER and PASS to the peer */ - Client_SetToken( Client, atoi( Req->argv[1] )); + Client_SetIntroducer(Client, Client); + Client_SetToken(Client, 1); + } else { + /* outgoing connect, we already sent a SERVER and PASS + * command to the peer */ + Client_SetToken(Client, atoi(Req->argv[1])); } /* Mark this connection as belonging to an configured server */ @@ -267,46 +267,104 @@ IRC_NJOIN( CLIENT *Client, REQUEST *Req ) } /* IRC_NJOIN */ +/** + * Handler for the IRC command "SQUIT". + * See RFC 2813 section 4.1.2 and RFC 2812 section 3.1.8. + */ GLOBAL bool -IRC_SQUIT( CLIENT *Client, REQUEST *Req ) +IRC_SQUIT(CLIENT * Client, REQUEST * Req) { - CLIENT *target; - char msg[LINE_LEN + 64]; + char msg[COMMAND_LEN], logmsg[COMMAND_LEN]; + CLIENT *from, *target; + CONN_ID con; + int loglevel; - assert( Client != NULL ); - assert( Req != NULL ); + assert(Client != NULL); + assert(Req != NULL); - if( Req->argc != 2 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command ); + if (Client_Type(Client) != CLIENT_SERVER + && !Client_HasMode(Client, 'o')) + return Op_NoPrivileges(Client, Req); - Log( LOG_DEBUG, "Got SQUIT from %s for \"%s\": \"%s\" ...", Client_ID( Client ), Req->argv[0], Req->argv[1] ); + /* Bad number of arguments? */ + if (Req->argc != 2) + return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG, + Client_ID(Client), Req->command); - target = Client_Search( Req->argv[0] ); - if( ! target ) - { - Log( LOG_WARNING, "Got SQUIT from %s for unknown server \"%s\"!?", Client_ID( Client ), Req->argv[0] ); + if (Client_Type(Client) == CLIENT_SERVER && Req->prefix) { + from = Client_Search(Req->prefix); + if (Client_Type(from) != CLIENT_SERVER + && !Op_Check(Client, Req)) + return Op_NoPrivileges(Client, Req); + } else + from = Client; + if (!from) + return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG, + Client_ID(Client), Req->prefix); + + if (Client_Type(Client) == CLIENT_USER) + loglevel = LOG_NOTICE | LOG_snotice; + else + loglevel = LOG_DEBUG; + Log(loglevel, "Got SQUIT from %s for \"%s\": \"%s\" ...", + Client_ID(from), Req->argv[0], Req->argv[1]); + + target = Client_Search(Req->argv[0]); + if (Client_Type(Client) != CLIENT_SERVER && + target == Client_ThisServer()) + return Op_NoPrivileges(Client, Req); + if (!target) { + /* The server is (already) unknown */ + Log(LOG_WARNING, + "Got SQUIT from %s for unknown server \"%s\"!?", + Client_ID(Client), Req->argv[0]); return CONNECTED; } - if( Req->argv[1][0] ) - { - if( strlen( Req->argv[1] ) > LINE_LEN ) Req->argv[1][LINE_LEN] = '\0'; - snprintf( msg, sizeof( msg ), "%s (SQUIT from %s).", Req->argv[1], Client_ID( Client )); - } - else snprintf( msg, sizeof( msg ), "Got SQUIT from %s.", Client_ID( Client )); + con = Client_Conn(target); - if( Client_Conn( target ) > NONE ) - { - /* This server has the connection */ - if( Req->argv[1][0] ) Conn_Close( Client_Conn( target ), msg, Req->argv[1], true); - else Conn_Close( Client_Conn( target ), msg, NULL, true); - return DISCONNECTED; - } + if (Req->argv[1][0]) + if (Client_NextHop(from) != Client || con > NONE) + snprintf(msg, sizeof(msg), "%s (SQUIT from %s)", + Req->argv[1], Client_ID(from)); + else + strlcpy(msg, Req->argv[1], sizeof(msg)); else - { - /* connection was on another server */ - Client_Destroy( target, msg, Req->argv[1], false ); - return CONNECTED; + snprintf(msg, sizeof(msg), "Got SQUIT from %s", + Client_ID(from)); + + if (con > NONE) { + /* We are directly connected to the target server, so we + * have to tear down the connection and to inform all the + * other remaining servers in the network */ + IRC_SendWallops(Client_ThisServer(), Client_ThisServer(), + "Received SQUIT %s from %s: %s", + Req->argv[0], Client_ID(from), + Req->argv[1][0] ? Req->argv[1] : "-"); + Conn_Close(con, NULL, msg, true); + if (con == Client_Conn(Client)) + return DISCONNECTED; + } else { + /* This server is not directly connected, so the SQUIT must + * be forwarded ... */ + if (Client_Type(from) != CLIENT_SERVER) { + /* The origin is not an IRC server, so don't evaluate + * this SQUIT but simply forward it */ + IRC_WriteStrClientPrefix(Client_NextHop(target), + from, "SQUIT %s :%s", Req->argv[0], Req->argv[1]); + } else { + /* SQUIT has been generated by another server, so + * remove the target server from the network! */ + logmsg[0] = '\0'; + if (!strchr(msg, '(')) + snprintf(logmsg, sizeof(logmsg), + "%s (SQUIT from %s)", Req->argv[1], + Client_ID(from)); + Client_Destroy(target, logmsg[0] ? logmsg : msg, + msg, false); + } } + return CONNECTED; } /* IRC_SQUIT */ /* -eof- */