/** * Forward JOIN command to all servers * * This function calls cb_join_forward(), which differentiates between * protocol implementations (e.g. RFC 2812, RFC 1459). * * @param Client Client used to prefix the genrated commands * @param target Forward JOIN (and MODE) command to this peer server * @param chan Channel structure * @param channame Channel name */ static void join_forward(CLIENT *Client, CLIENT *target, CHANNEL *chan, const char *channame) { char modes[CHANNEL_MODE_LEN], str[COMMAND_LEN]; /* RFC 2813, 4.2.1: channel modes are separated from the channel * name with ASCII 7, if any, and not spaces: */ strlcpy(&modes[1], Channel_UserModes(chan, target), sizeof(modes) - 1); if (modes[1]) modes[0] = 0x7; else modes[0] = '\0'; /* forward to other servers (if it is not a local channel) */ if (!Channel_IsLocal(chan)) { snprintf(str, sizeof(str), "%s%s", channame, modes); IRC_WriteStrServersPrefixFlag_CB(Client, target, '\0', cb_join_forward, str); } /* tell users in this channel about the new client */ IRC_WriteStrChannelPrefix(Client, chan, target, false, "JOIN :%s", channame); /* synchronize channel modes */ if (modes[1]) { IRC_WriteStrChannelPrefix(Client, chan, target, false, "MODE %s +%s %s", channame, &modes[1], Client_ID(target)); } } /* join_forward */
/** * Send information about changed channel invite/ban/exception lists to clients. * * @param IsAdd true if the list item has been added, false otherwise. * @param ModeChar The mode to use (e. g. 'b' or 'I') * @param Prefix The originator of the mode list change. * @param Client The sender of the command. * @param Channel The channel of which the list has been modified. * @param Mask The mask which has been added or removed. * @return CONNECTED or DISCONNECTED. */ static bool Send_ListChange(const bool IsAdd, const char ModeChar, CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, const char *Mask) { bool ok = true; /* Send confirmation to the client */ if (Client_Type(Client) == CLIENT_USER) ok = IRC_WriteStrClientPrefix(Client, Prefix, "MODE %s %c%c %s", Channel_Name(Channel), IsAdd ? '+' : '-', ModeChar, Mask); /* to other servers */ IRC_WriteStrServersPrefix(Client, Prefix, "MODE %s %c%c %s", Channel_Name(Channel), IsAdd ? '+' : '-', ModeChar, Mask); /* and local users in channel */ IRC_WriteStrChannelPrefix(Client, Channel, Prefix, false, "MODE %s %c%c %s", Channel_Name(Channel), IsAdd ? '+' : '-', ModeChar, Mask ); return ok; } /* Send_ListChange */
GLOBAL bool Channel_Write(CHANNEL *Chan, CLIENT *From, CLIENT *Client, const char *Command, bool SendErrors, const char *Text) { if (!Can_Send_To_Channel(Chan, From)) { if (! SendErrors) return CONNECTED; /* no error, see RFC 2812 */ if (strchr(Channel_Modes(Chan), 'M')) return IRC_WriteStrClient(From, ERR_NEEDREGGEDNICK_MSG, Client_ID(From), Channel_Name(Chan)); else return IRC_WriteStrClient(From, ERR_CANNOTSENDTOCHAN_MSG, Client_ID(From), Channel_Name(Chan)); } if (Client_Conn(From) > NONE) Conn_UpdateIdle(Client_Conn(From)); return IRC_WriteStrChannelPrefix(Client, Chan, From, true, "%s %s :%s", Command, Channel_Name(Chan), Text); }
/** * Handle channel mode and channel-user mode changes * * @param Client The client from which this command has been received. * @param Req Request structure with prefix and all parameters. * @param Origin The originator of the MODE command (prefix). * @param Channel The target channel of this MODE command. * @return CONNECTED or DISCONNECTED. */ static bool Channel_Mode(CLIENT *Client, REQUEST *Req, CLIENT *Origin, CHANNEL *Channel) { char the_modes[COMMAND_LEN], the_args[COMMAND_LEN], x[2], argadd[CLIENT_PASS_LEN], *mode_ptr; bool connected, set, skiponce, retval, use_servermode, is_halfop, is_op, is_admin, is_owner, is_machine, is_oper; int mode_arg, arg_arg, mode_arg_count = 0; CLIENT *client; long l; size_t len; is_halfop = is_op = is_admin = is_owner = is_machine = is_oper = false; if (Channel_IsModeless(Channel)) return IRC_WriteErrClient(Client, ERR_NOCHANMODES_MSG, Client_ID(Client), Channel_Name(Channel)); /* Mode request: let's answer it :-) */ if (Req->argc <= 1) return Channel_Mode_Answer_Request(Origin, Channel); /* Check if origin is oper and opers can use mode */ use_servermode = Conf_OperServerMode; if(Client_HasMode(Client, 'o') && Conf_OperCanMode) { is_oper = true; } /* Check if client is a server/service */ if(Client_Type(Client) == CLIENT_SERVER || Client_Type(Client) == CLIENT_SERVICE) { is_machine = true; } /* Check if client is member of channel or an oper or an server/service */ if(!Channel_IsMemberOf(Channel, Client) && !is_oper && !is_machine) return IRC_WriteErrClient(Origin, ERR_NOTONCHANNEL_MSG, Client_ID(Origin), Channel_Name(Channel)); mode_arg = 1; mode_ptr = Req->argv[mode_arg]; if (Req->argc > mode_arg + 1) arg_arg = mode_arg + 1; else arg_arg = -1; /* Initial state: set or unset modes? */ skiponce = false; switch (*mode_ptr) { case '-': set = false; break; case '+': set = true; break; default: set = true; skiponce = true; } /* Prepare reply string */ strcpy(the_modes, set ? "+" : "-"); the_args[0] = '\0'; x[1] = '\0'; connected = CONNECTED; while (mode_ptr) { if (!skiponce) mode_ptr++; if (!*mode_ptr) { /* Try next argument if there's any */ if (arg_arg < 0) break; if (arg_arg > mode_arg) mode_arg = arg_arg; else mode_arg++; if (mode_arg >= Req->argc) break; mode_ptr = Req->argv[mode_arg]; if (Req->argc > mode_arg + 1) arg_arg = mode_arg + 1; else arg_arg = -1; } skiponce = false; switch (*mode_ptr) { case '+': case '-': if (((*mode_ptr == '+') && !set) || ((*mode_ptr == '-') && set)) { /* Action modifier ("+"/"-") must be changed ... */ len = strlen(the_modes) - 1; if (the_modes[len] == '+' || the_modes[len] == '-') { /* Adjust last action modifier in result */ the_modes[len] = *mode_ptr; } else { /* Append modifier character to result string */ x[0] = *mode_ptr; strlcat(the_modes, x, sizeof(the_modes)); } set = *mode_ptr == '+'; } continue; } /* Are there arguments left? */ if (arg_arg >= Req->argc) arg_arg = -1; if(!is_machine && !is_oper) { if (Channel_UserHasMode(Channel, Client, 'q')) is_owner = true; if (Channel_UserHasMode(Channel, Client, 'a')) is_admin = true; if (Channel_UserHasMode(Channel, Client, 'o')) is_op = true; if (Channel_UserHasMode(Channel, Client, 'h')) is_halfop = true; } /* Validate modes */ x[0] = '\0'; argadd[0] = '\0'; client = NULL; switch (*mode_ptr) { /* --- Channel modes --- */ case 'R': /* Registered users only */ case 's': /* Secret channel */ case 'z': /* Secure connections only */ if(!is_oper && !is_machine && !is_owner && !is_admin && !is_op) { connected = IRC_WriteErrClient(Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID(Origin), Channel_Name(Channel)); goto chan_exit; } case 'i': /* Invite only */ case 'V': /* Invite disallow */ case 'M': /* Only identified nicks can write */ case 'm': /* Moderated */ case 'n': /* Only members can write */ case 'N': /* Can't change nick while on this channel */ case 'Q': /* No kicks */ case 't': /* Topic locked */ if(is_oper || is_machine || is_owner || is_admin || is_op || is_halfop) x[0] = *mode_ptr; else connected = IRC_WriteErrClient(Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID(Origin), Channel_Name(Channel)); break; case 'k': /* Channel key */ if (Mode_Limit_Reached(Client, mode_arg_count++)) goto chan_exit; if (!set) { if (is_oper || is_machine || is_owner || is_admin || is_op || is_halfop) { x[0] = *mode_ptr; if (Channel_HasMode(Channel, 'k')) strlcpy(argadd, "*", sizeof(argadd)); if (arg_arg > mode_arg) arg_arg++; } else connected = IRC_WriteErrClient(Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID(Origin), Channel_Name(Channel)); break; } if (arg_arg > mode_arg) { if (is_oper || is_machine || is_owner || is_admin || is_op || is_halfop) { Channel_ModeDel(Channel, 'k'); Channel_SetKey(Channel, Req->argv[arg_arg]); strlcpy(argadd, Channel_Key(Channel), sizeof(argadd)); x[0] = *mode_ptr; } else { connected = IRC_WriteErrClient(Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID(Origin), Channel_Name(Channel)); } Req->argv[arg_arg][0] = '\0'; arg_arg++; } else { #ifdef STRICT_RFC /* Only send error message in "strict" mode, * this is how ircd2.11 and others behave ... */ connected = IRC_WriteErrClient(Origin, ERR_NEEDMOREPARAMS_MSG, Client_ID(Origin), Req->command); #endif goto chan_exit; } break; case 'l': /* Member limit */ if (Mode_Limit_Reached(Client, mode_arg_count++)) goto chan_exit; if (!set) { if (is_oper || is_machine || is_owner || is_admin || is_op || is_halfop) x[0] = *mode_ptr; else connected = IRC_WriteErrClient(Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID(Origin), Channel_Name(Channel)); break; } if (arg_arg > mode_arg) { if (is_oper || is_machine || is_owner || is_admin || is_op || is_halfop) { l = atol(Req->argv[arg_arg]); if (l > 0 && l < 0xFFFF) { Channel_ModeDel(Channel, 'l'); Channel_SetMaxUsers(Channel, l); snprintf(argadd, sizeof(argadd), "%ld", l); x[0] = *mode_ptr; } } else { connected = IRC_WriteErrClient(Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID(Origin), Channel_Name(Channel)); } Req->argv[arg_arg][0] = '\0'; arg_arg++; } else { #ifdef STRICT_RFC /* Only send error message in "strict" mode, * this is how ircd2.11 and others behave ... */ connected = IRC_WriteErrClient(Origin, ERR_NEEDMOREPARAMS_MSG, Client_ID(Origin), Req->command); #endif goto chan_exit; } break; case 'O': /* IRC operators only */ if (set) { /* Only IRC operators are allowed to * set the 'O' channel mode! */ if(is_oper || is_machine) x[0] = 'O'; else connected = IRC_WriteErrClient(Origin, ERR_NOPRIVILEGES_MSG, Client_ID(Origin)); } else if(is_oper || is_machine || is_owner || is_admin || is_op) x[0] = 'O'; else connected = IRC_WriteErrClient(Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID(Origin), Channel_Name(Channel)); break; case 'P': /* Persistent channel */ if (set) { /* Only IRC operators are allowed to * set the 'P' channel mode! */ if(is_oper || is_machine) x[0] = 'P'; else connected = IRC_WriteErrClient(Origin, ERR_NOPRIVILEGES_MSG, Client_ID(Origin)); } else if(is_oper || is_machine || is_owner || is_admin || is_op) x[0] = 'P'; else connected = IRC_WriteErrClient(Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID(Origin), Channel_Name(Channel)); break; /* --- Channel user modes --- */ case 'q': /* Owner */ case 'a': /* Channel admin */ if(!is_oper && !is_machine && !is_owner && !is_admin) { connected = IRC_WriteErrClient(Origin, ERR_CHANOPPRIVTOOLOW_MSG, Client_ID(Origin), Channel_Name(Channel)); goto chan_exit; } case 'o': /* Channel operator */ if(!is_oper && !is_machine && !is_owner && !is_admin && !is_op) { connected = IRC_WriteErrClient(Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID(Origin), Channel_Name(Channel)); goto chan_exit; } case 'h': /* Half Op */ if(!is_oper && !is_machine && !is_owner && !is_admin && !is_op) { connected = IRC_WriteErrClient(Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID(Origin), Channel_Name(Channel)); goto chan_exit; } case 'v': /* Voice */ if (arg_arg > mode_arg) { if (is_oper || is_machine || is_owner || is_admin || is_op || is_halfop) { client = Client_Search(Req->argv[arg_arg]); if (client) x[0] = *mode_ptr; else connected = IRC_WriteErrClient(Origin, ERR_NOSUCHNICK_MSG, Client_ID(Origin), Req->argv[arg_arg]); } else { connected = IRC_WriteErrClient(Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID(Origin), Channel_Name(Channel)); } Req->argv[arg_arg][0] = '\0'; arg_arg++; } else { #ifdef STRICT_RFC /* Report an error to the client, when a user * mode should be changed but no nickname is * given. But don't do it when not in "strict" * mode, because most other servers don't do * it as well and some clients send "wired" * MODE commands like "MODE #chan -ooo nick". */ connected = IRC_WriteErrClient(Origin, ERR_NEEDMOREPARAMS_MSG, Client_ID(Origin), Req->command); #endif goto chan_exit; } break; /* --- Channel lists --- */ case 'I': /* Invite lists */ case 'b': /* Ban lists */ case 'e': /* Channel exception lists */ if (Mode_Limit_Reached(Client, mode_arg_count++)) goto chan_exit; if (arg_arg > mode_arg) { /* modify list */ if (is_oper || is_machine || is_owner || is_admin || is_op || is_halfop) { connected = set ? Add_To_List(*mode_ptr, Origin, Client, Channel, Req->argv[arg_arg]) : Del_From_List(*mode_ptr, Origin, Client, Channel, Req->argv[arg_arg]); } else { connected = IRC_WriteErrClient(Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID(Origin), Channel_Name(Channel)); } Req->argv[arg_arg][0] = '\0'; arg_arg++; } else { switch (*mode_ptr) { case 'I': Channel_ShowInvites(Origin, Channel); break; case 'b': Channel_ShowBans(Origin, Channel); break; case 'e': Channel_ShowExcepts(Origin, Channel); break; } } break; default: if (Client_Type(Client) != CLIENT_SERVER) { Log(LOG_DEBUG, "Unknown mode \"%c%c\" from \"%s\" on %s!?", set ? '+' : '-', *mode_ptr, Client_ID(Origin), Channel_Name(Channel)); connected = IRC_WriteErrClient(Origin, ERR_UNKNOWNMODE_MSG, Client_ID(Origin), *mode_ptr, Channel_Name(Channel)); x[0] = '\0'; } else { Log(LOG_DEBUG, "Handling unknown mode \"%c%c\" from \"%s\" on %s ...", set ? '+' : '-', *mode_ptr, Client_ID(Origin), Channel_Name(Channel)); x[0] = *mode_ptr; } } if (!connected) break; /* Is there a valid mode change? */ if (!x[0]) continue; /* Validate target client */ if (client && (!Channel_IsMemberOf(Channel, client))) { if (!IRC_WriteErrClient(Origin, ERR_USERNOTINCHANNEL_MSG, Client_ID(Origin), Client_ID(client), Channel_Name(Channel))) break; continue; } if (client) { /* Channel-User-Mode */ retval = set ? Channel_UserModeAdd(Channel, client, x[0]) : Channel_UserModeDel(Channel, client, x[0]); if (retval) { strlcat(the_args, " ", sizeof(the_args)); strlcat(the_args, Client_ID(client), sizeof(the_args)); strlcat(the_modes, x, sizeof(the_modes)); LogDebug ("User \"%s\": Mode change on %s, now \"%s\"", Client_Mask(client), Channel_Name(Channel), Channel_UserModes(Channel, client)); } } else { /* Channel-Mode */ retval = set ? Channel_ModeAdd(Channel, x[0]) : Channel_ModeDel(Channel, x[0]); if (retval) { strlcat(the_modes, x, sizeof(the_modes)); LogDebug("Channel %s: Mode change, now \"%s\".", Channel_Name(Channel), Channel_Modes(Channel)); } } /* Are there additional arguments to add? */ if (argadd[0]) { strlcat(the_args, " ", sizeof(the_args)); strlcat(the_args, argadd, sizeof(the_args)); } } chan_exit: /* Are there changed modes? */ if (the_modes[1]) { /* Clean up mode string */ len = strlen(the_modes) - 1; if ((the_modes[len] == '+') || (the_modes[len] == '-')) the_modes[len] = '\0'; if (Client_Type(Client) == CLIENT_SERVER) { /* MODE requests for local channels from other servers * are definitely invalid! */ if (Channel_IsLocal(Channel)) { Log(LOG_ALERT, "Got remote MODE command for local channel!? Ignored."); return CONNECTED; } /* Forward mode changes to channel users and all the * other remote servers: */ IRC_WriteStrServersPrefix(Client, Origin, "MODE %s %s%s", Channel_Name(Channel), the_modes, the_args); IRC_WriteStrChannelPrefix(Client, Channel, Origin, false, "MODE %s %s%s", Channel_Name(Channel), the_modes, the_args); } else { if (use_servermode) Origin = Client_ThisServer(); /* Send reply to client and inform other servers and channel users */ connected = IRC_WriteStrClientPrefix(Client, Origin, "MODE %s %s%s", Channel_Name(Channel), the_modes, the_args); /* Only forward requests for non-local channels */ if (!Channel_IsLocal(Channel)) IRC_WriteStrServersPrefix(Client, Origin, "MODE %s %s%s", Channel_Name(Channel), the_modes, the_args); IRC_WriteStrChannelPrefix(Client, Channel, Origin, false, "MODE %s %s%s", Channel_Name(Channel), the_modes, the_args); } } return connected; } /* Channel_Mode */
static bool Remove_Client( int Type, CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, const char *Reason, bool InformServer ) { CL2CHAN *cl2chan, *last_cl2chan; CHANNEL *c; assert( Chan != NULL ); assert( Client != NULL ); assert( Origin != NULL ); assert( Reason != NULL ); /* Do not inform other servers if the channel is local to this server, * regardless of what the caller requested! */ if(InformServer) InformServer = !Channel_IsLocal(Chan); last_cl2chan = NULL; cl2chan = My_Cl2Chan; while( cl2chan ) { if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) break; last_cl2chan = cl2chan; cl2chan = cl2chan->next; } if( ! cl2chan ) return false; c = cl2chan->channel; assert( c != NULL ); /* maintain cl2chan list */ if( last_cl2chan ) last_cl2chan->next = cl2chan->next; else My_Cl2Chan = cl2chan->next; free( cl2chan ); switch( Type ) { case REMOVE_QUIT: /* QUIT: other servers have already been notified, * see Client_Destroy(); so only inform other clients * in same channel. */ assert( InformServer == false ); LogDebug("User \"%s\" left channel \"%s\" (%s).", Client_Mask( Client ), c->name, Reason ); break; case REMOVE_KICK: /* User was KICKed: inform other servers (public * channels) and all users in the channel */ if( InformServer ) IRC_WriteStrServersPrefix( Client_NextHop( Origin ), Origin, "KICK %s %s :%s", c->name, Client_ID( Client ), Reason); IRC_WriteStrChannelPrefix(Client, c, Origin, false, "KICK %s %s :%s", c->name, Client_ID( Client ), Reason ); if ((Client_Conn(Client) > NONE) && (Client_Type(Client) == CLIENT_USER)) { IRC_WriteStrClientPrefix(Client, Origin, "KICK %s %s :%s", c->name, Client_ID( Client ), Reason); } LogDebug("User \"%s\" has been kicked off \"%s\" by \"%s\": %s.", Client_Mask( Client ), c->name, Client_ID(Origin), Reason); break; default: /* PART */ if (Conf_MorePrivacy) Reason = ""; if (InformServer) IRC_WriteStrServersPrefix(Origin, Client, "PART %s :%s", c->name, Reason); IRC_WriteStrChannelPrefix(Origin, c, Client, false, "PART %s :%s", c->name, Reason); if ((Client_Conn(Origin) > NONE) && (Client_Type(Origin) == CLIENT_USER)) { IRC_WriteStrClientPrefix( Origin, Client, "PART %s :%s", c->name, Reason); LogDebug("User \"%s\" left channel \"%s\" (%s).", Client_Mask(Client), c->name, Reason); } } /* When channel is empty and is not pre-defined, delete */ if( ! Channel_HasMode( Chan, 'P' )) { if( ! Get_First_Cl2Chan( NULL, Chan )) Delete_Channel( Chan ); } return true; } /* Remove_Client */
GLOBAL bool IRC_NJOIN( CLIENT *Client, REQUEST *Req ) { char nick_in[COMMAND_LEN], nick_out[COMMAND_LEN], *channame, *ptr, modes[8]; bool is_op, is_voiced; CHANNEL *chan; CLIENT *c; assert( Client != NULL ); assert( Req != NULL ); if( Req->argc != 2 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command ); strlcpy( nick_in, Req->argv[1], sizeof( nick_in )); strcpy( nick_out, "" ); channame = Req->argv[0]; ptr = strtok( nick_in, "," ); while( ptr ) { is_op = is_voiced = false; /* cut off prefixes */ while(( *ptr == '@' ) || ( *ptr == '+' )) { if( *ptr == '@' ) is_op = true; if( *ptr == '+' ) is_voiced = true; ptr++; } c = Client_Search( ptr ); if( c ) { Channel_Join( c, channame ); chan = Channel_Search( channame ); assert( chan != NULL ); if( is_op ) Channel_UserModeAdd( chan, c, 'o' ); if( is_voiced ) Channel_UserModeAdd( chan, c, 'v' ); /* announce to channel... */ IRC_WriteStrChannelPrefix( Client, chan, c, false, "JOIN :%s", channame ); /* set Channel-User-Modes */ strlcpy( modes, Channel_UserModes( chan, c ), sizeof( modes )); if( modes[0] ) { /* send modes to channel */ IRC_WriteStrChannelPrefix( Client, chan, Client, false, "MODE %s +%s %s", channame, modes, Client_ID( c )); } if( nick_out[0] != '\0' ) strlcat( nick_out, ",", sizeof( nick_out )); if( is_op ) strlcat( nick_out, "@", sizeof( nick_out )); if( is_voiced ) strlcat( nick_out, "+", sizeof( nick_out )); strlcat( nick_out, ptr, sizeof( nick_out )); } else Log( LOG_ERR, "Got NJOIN for unknown nick \"%s\" for channel \"%s\"!", ptr, channame ); /* search for next Nick */ ptr = strtok( NULL, "," ); } /* forward to other servers */ if( nick_out[0] != '\0' ) IRC_WriteStrServersPrefix( Client, Client_ThisServer( ), "NJOIN %s :%s", Req->argv[0], nick_out ); return CONNECTED; } /* IRC_NJOIN */
/** * Handler for the IRC+ "CHANINFO" command. * * @param Client The client from which this command has been received. * @param Req Request structure with prefix and all parameters. * @return CONNECTED or DISCONNECTED. */ GLOBAL bool IRC_CHANINFO( CLIENT *Client, REQUEST *Req ) { char modes_add[COMMAND_LEN], l[16]; CLIENT *from; CHANNEL *chan; int arg_topic; assert( Client != NULL ); assert( Req != NULL ); /* Bad number of parameters? */ if (Req->argc < 2 || Req->argc == 4 || Req->argc > 5) return IRC_WriteErrClient(Client, ERR_NEEDMOREPARAMS_MSG, Client_ID(Client), Req->command); /* Compatibility kludge */ if (Req->argc == 5) arg_topic = 4; else if(Req->argc == 3) arg_topic = 2; else arg_topic = -1; _IRC_GET_SENDER_OR_RETURN_(from, Req, Client) /* Search or create channel */ chan = Channel_Search( Req->argv[0] ); if (!chan) chan = Channel_Create( Req->argv[0] ); if (!chan) return CONNECTED; if (Req->argv[1][0] == '+') { if (!*Channel_Modes(chan)) { /* OK, this channel doesn't have modes yet, * set the received ones: */ Channel_SetModes(chan, &Req->argv[1][1]); if(Req->argc == 5) { if(Channel_HasMode(chan, 'k')) Channel_SetKey(chan, Req->argv[2]); if(Channel_HasMode(chan, 'l')) Channel_SetMaxUsers(chan, atol(Req->argv[3])); } else { /* Delete modes which we never want to inherit */ Channel_ModeDel(chan, 'l'); Channel_ModeDel(chan, 'k'); } strcpy(modes_add, ""); if (Channel_HasMode(chan, 'l')) { snprintf(l, sizeof(l), " %lu", Channel_MaxUsers(chan)); strlcat(modes_add, l, sizeof(modes_add)); } if (Channel_HasMode(chan, 'k')) { strlcat(modes_add, " ", sizeof(modes_add)); strlcat(modes_add, Channel_Key(chan), sizeof(modes_add)); } /* Inform members of this channel */ IRC_WriteStrChannelPrefix(Client, chan, from, false, "MODE %s +%s%s", Req->argv[0], Channel_Modes(chan), modes_add); } } else Log(LOG_WARNING, "CHANINFO: invalid MODE format ignored!"); if (arg_topic > 0) { /* We got a topic */ if (!*Channel_Topic(chan) && Req->argv[arg_topic][0]) { /* OK, there is no topic jet */ Channel_SetTopic(chan, Client, Req->argv[arg_topic]); IRC_WriteStrChannelPrefix(Client, chan, from, false, "TOPIC %s :%s", Req->argv[0], Channel_Topic(chan)); } } /* Forward CHANINFO to other servers */ if (Req->argc == 5) IRC_WriteStrServersPrefixFlag(Client, from, 'C', "CHANINFO %s %s %s %s :%s", Req->argv[0], Req->argv[1], Req->argv[2], Req->argv[3], Req->argv[4]); else if (Req->argc == 3) IRC_WriteStrServersPrefixFlag(Client, from, 'C', "CHANINFO %s %s :%s", Req->argv[0], Req->argv[1], Req->argv[2]); else IRC_WriteStrServersPrefixFlag(Client, from, 'C', "CHANINFO %s %s", Req->argv[0], Req->argv[1]); return CONNECTED; } /* IRC_CHANINFO */
/** * Handler for the IRC "TOPIC" command. * * @param Client The client from which this command has been received. * @param Req Request structure with prefix and all parameters. * @return CONNECTED or DISCONNECTED. */ GLOBAL bool IRC_TOPIC( CLIENT *Client, REQUEST *Req ) { CHANNEL *chan; CLIENT *from; char *topic; bool r, topic_power; assert( Client != NULL ); assert( Req != NULL ); _IRC_GET_SENDER_OR_RETURN_(from, Req, Client) chan = Channel_Search(Req->argv[0]); if (!chan) return IRC_WriteErrClient(from, ERR_NOSUCHCHANNEL_MSG, Client_ID(from), Req->argv[0]); /* Only remote servers and channel members are allowed to change the * channel topic, and IRC operators when the Conf_OperCanMode option * is set in the server configuration. */ if (Client_Type(Client) != CLIENT_SERVER) { topic_power = Client_HasMode(from, 'o'); if (!Channel_IsMemberOf(chan, from) && !(Conf_OperCanMode && topic_power)) return IRC_WriteErrClient(from, ERR_NOTONCHANNEL_MSG, Client_ID(from), Req->argv[0]); } else topic_power = true; if (Req->argc == 1) { /* Request actual topic */ topic = Channel_Topic(chan); if (*topic) { r = IRC_WriteStrClient(from, RPL_TOPIC_MSG, Client_ID(Client), Channel_Name(chan), topic); #ifndef STRICT_RFC if (!r) return r; r = IRC_WriteStrClient(from, RPL_TOPICSETBY_MSG, Client_ID(Client), Channel_Name(chan), Channel_TopicWho(chan), Channel_TopicTime(chan)); #endif return r; } else return IRC_WriteStrClient(from, RPL_NOTOPIC_MSG, Client_ID(from), Channel_Name(chan)); } if (Channel_HasMode(chan, 't')) { /* Topic Lock. Is the user a channel op or IRC operator? */ if(!topic_power && !Channel_UserHasMode(chan, from, 'h') && !Channel_UserHasMode(chan, from, 'o') && !Channel_UserHasMode(chan, from, 'a') && !Channel_UserHasMode(chan, from, 'q')) return IRC_WriteErrClient(from, ERR_CHANOPRIVSNEEDED_MSG, Client_ID(from), Channel_Name(chan)); } /* Set new topic */ Channel_SetTopic(chan, from, Req->argv[1]); LogDebug("%s \"%s\" set topic on \"%s\": %s", Client_TypeText(from), Client_Mask(from), Channel_Name(chan), Req->argv[1][0] ? Req->argv[1] : "<none>"); if (Conf_OperServerMode) from = Client_ThisServer(); /* Update channel and forward new topic to other servers */ if (!Channel_IsLocal(chan)) IRC_WriteStrServersPrefix(Client, from, "TOPIC %s :%s", Req->argv[0], Req->argv[1]); IRC_WriteStrChannelPrefix(Client, chan, from, false, "TOPIC %s :%s", Req->argv[0], Req->argv[1]); if (Client_Type(Client) == CLIENT_USER) return IRC_WriteStrClientPrefix(Client, Client, "TOPIC %s :%s", Req->argv[0], Req->argv[1]); else return CONNECTED; } /* IRC_TOPIC */