/*
* ngIRCd -- The Next Generation IRC Daemon
- * Copyright (c)2001-2011 Alexander Barton (alex@barton.de) and Contributors.
+ * Copyright (c)2001-2012 Alexander Barton (alex@barton.de) and Contributors.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
#include "irc-mode.h"
-static bool Client_Mode PARAMS(( CLIENT *Client, REQUEST *Req, CLIENT *Origin,
- CLIENT *Target ));
-static bool Channel_Mode PARAMS(( CLIENT *Client, REQUEST *Req, CLIENT *Origin,
- CHANNEL *Channel ));
+static bool Client_Mode PARAMS((CLIENT *Client, REQUEST *Req, CLIENT *Origin,
+ CLIENT *Target));
+static bool Channel_Mode PARAMS((CLIENT *Client, REQUEST *Req, CLIENT *Origin,
+ CHANNEL *Channel));
-static bool Add_Ban_Invite PARAMS((int what, CLIENT *Prefix, CLIENT *Client,
- CHANNEL *Channel, const char *Pattern));
-static bool Del_Ban_Invite PARAMS((int what, CLIENT *Prefix, CLIENT *Client,
- CHANNEL *Channel, const char *Pattern));
+static bool Add_To_List PARAMS((char what, CLIENT *Prefix, CLIENT *Client,
+ CHANNEL *Channel, const char *Pattern));
+static bool Del_From_List PARAMS((char what, CLIENT *Prefix, CLIENT *Client,
+ CHANNEL *Channel, const char *Pattern));
-static bool Send_ListChange PARAMS((const char *Mode, CLIENT *Prefix,
- CLIENT *Client, CHANNEL *Channel, const char *Mask));
+static bool Send_ListChange PARAMS((const bool IsAdd, const char ModeChar,
+ CLIENT *Prefix, CLIENT *Client,
+ CHANNEL *Channel, const char *Mask));
/**
} /* IRC_MODE */
+/**
+ * Check if the "mode limit" for a client has been reached.
+ *
+ * This limit doesn't apply for servers or services!
+ *
+ * @param Client The client to check.
+ * @param Count The number of modes already handled.
+ * @return true if the limit has been reached.
+ */
+static bool
+Mode_Limit_Reached(CLIENT *Client, int Count)
+{
+ if (Client_Type(Client) == CLIENT_SERVER
+ || Client_Type(Client) == CLIENT_SERVICE)
+ return false;
+ if (Count < MAX_HNDL_MODES_ARG)
+ return false;
+ return true;
+}
+
+
/**
* Handle client mode requests
*
break;
}
- 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 ));
- }
- if( *mode_ptr == '+' ) set = true;
- else set = 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] == '-') {
+ /* Last character in the "result
+ * string" was an "action", so just
+ * overwrite it with the new action */
+ the_modes[len] = *mode_ptr;
+ } else {
+ /* Append new modifier character to
+ * the resulting mode string */
+ x[0] = *mode_ptr;
+ strlcat(the_modes, x,
+ sizeof(the_modes));
}
- continue;
+ if (*mode_ptr == '+')
+ set = true;
+ else
+ set = false;
+ }
+ continue;
}
-
+
/* Validate modes */
x[0] = '\0';
- switch( *mode_ptr )
- {
- case 'i': /* Invisible */
- case 's': /* Server messages */
- case 'w': /* Wallops messages */
- x[0] = *mode_ptr;
- break;
-
- case 'a': /* Away */
- if( Client_Type( Client ) == CLIENT_SERVER )
- {
- x[0] = 'a';
- Client_SetAway( Origin, DEFAULT_AWAY_MSG );
- }
- else ok = IRC_WriteStrClient( Origin, ERR_NOPRIVILEGES_MSG, Client_ID( Origin ));
- break;
-
- case 'c': /* Receive connect notices
- * (only settable by IRC operators!) */
- if(!set || Client_OperByMe(Origin)
- || Client_Type(Client) == CLIENT_SERVER)
- x[0] = 'c';
- else
- ok = IRC_WriteStrClient(Origin,
+ switch (*mode_ptr) {
+ case 'C': /* Only messages from clients sharing a channel */
+ case 'i': /* Invisible */
+ case 's': /* Server messages */
+ case 'w': /* Wallops messages */
+ x[0] = *mode_ptr;
+ break;
+ case 'a': /* Away */
+ if (Client_Type(Client) == CLIENT_SERVER) {
+ x[0] = 'a';
+ Client_SetAway(Origin, DEFAULT_AWAY_MSG);
+ } else
+ ok = IRC_WriteStrClient(Origin,
ERR_NOPRIVILEGES_MSG,
Client_ID(Origin));
- break;
-
- case 'o': /* IRC operator (only unsettable!) */
- if(( ! set ) || ( Client_Type( Client ) == CLIENT_SERVER ))
- {
- Client_SetOperByMe( Target, false );
- x[0] = 'o';
- }
- else ok = IRC_WriteStrClient( Origin, ERR_NOPRIVILEGES_MSG, Client_ID( Origin ));
- break;
-
- case 'r': /* Restricted (only settable) */
- if(( set ) || ( Client_Type( Client ) == CLIENT_SERVER )) x[0] = 'r';
- else ok = IRC_WriteStrClient( Origin, ERR_RESTRICTED_MSG, Client_ID( Origin ));
- break;
-
- case 'x': /* Cloak hostname */
- if (Client_HasMode(Client, 'r'))
- ok = IRC_WriteStrClient(Origin,
- ERR_RESTRICTED_MSG,
- Client_ID(Origin));
- else
- x[0] = 'x';
- break;
-
- default:
- Log( LOG_DEBUG, "Unknown mode \"%c%c\" from \"%s\"!?", set ? '+' : '-', *mode_ptr, Client_ID( Origin ));
- if( Client_Type( Client ) != CLIENT_SERVER ) ok = IRC_WriteStrClient( Origin, ERR_UMODEUNKNOWNFLAG2_MSG, Client_ID( Origin ), set ? '+' : '-', *mode_ptr );
+ break;
+ case 'c': /* Receive connect notices
+ * (only settable by IRC operators!) */
+ if (!set || Client_Type(Client) == CLIENT_SERVER
+ || Client_OperByMe(Origin))
+ x[0] = 'c';
+ else
+ ok = IRC_WriteStrClient(Origin,
+ ERR_NOPRIVILEGES_MSG,
+ Client_ID(Origin));
+ break;
+ case 'o': /* IRC operator (only unsettable!) */
+ if (!set || Client_Type(Client) == CLIENT_SERVER) {
+ Client_SetOperByMe(Target, false);
+ x[0] = 'o';
+ } else
+ ok = IRC_WriteStrClient(Origin,
+ ERR_NOPRIVILEGES_MSG,
+ Client_ID(Origin));
+ break;
+ case 'r': /* Restricted (only settable) */
+ if (set || Client_Type(Client) == CLIENT_SERVER)
+ x[0] = 'r';
+ else
+ ok = IRC_WriteStrClient(Origin,
+ ERR_RESTRICTED_MSG,
+ Client_ID(Origin));
+ break;
+ case 'x': /* Cloak hostname */
+ if (Client_HasMode(Client, 'r'))
+ ok = IRC_WriteStrClient(Origin,
+ ERR_RESTRICTED_MSG,
+ Client_ID(Origin));
+ else
+ x[0] = 'x';
+ break;
+ default:
+ if (Client_Type(Client) != CLIENT_SERVER) {
+ Log(LOG_DEBUG,
+ "Unknown mode \"%c%c\" from \"%s\"!?",
+ set ? '+' : '-', *mode_ptr,
+ Client_ID(Origin));
+ ok = IRC_WriteStrClient(Origin,
+ ERR_UMODEUNKNOWNFLAG2_MSG,
+ Client_ID(Origin),
+ set ? '+' : '-',
+ *mode_ptr);
x[0] = '\0';
- goto client_exit;
+ } else {
+ Log(LOG_DEBUG,
+ "Handling unknown mode \"%c%c\" from \"%s\" for \"%s\" ...",
+ set ? '+' : '-', *mode_ptr,
+ Client_ID(Origin), Client_ID(Target));
+ x[0] = *mode_ptr;
+ }
}
+
if (!ok)
break;
strlcat(the_modes, x, sizeof(the_modes));
}
}
-client_exit:
/* Are there changed modes? */
if (the_modes[1]) {
- /* Remoce needless action modifier characters */
+ /* Remove needless action modifier characters */
len = strlen(the_modes) - 1;
if (the_modes[len] == '+' || the_modes[len] == '-')
the_modes[len] = '\0';
if (Client_Type(Client) == CLIENT_SERVER) {
/* Forward modes to other servers */
+ if (Client_Conn(Target) != NONE) {
+ /* Remote server (service?) changed modes
+ * for one of our clients. Inform it! */
+ IRC_WriteStrClientPrefix(Target, Origin,
+ "MODE %s :%s",
+ Client_ID(Target),
+ the_modes);
+ }
IRC_WriteStrServersPrefix(Client, Origin,
"MODE %s :%s",
Client_ID(Target),
char the_modes[COMMAND_LEN], the_args[COMMAND_LEN], x[2],
argadd[CLIENT_PASS_LEN], *mode_ptr;
bool connected, set, skiponce, retval, onchannel, modeok, use_servermode;
- int mode_arg, arg_arg;
+ int mode_arg, arg_arg, mode_arg_count = 0;
CLIENT *client;
long l;
size_t len;
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
case 'i': /* Invite only */
case 'm': /* Moderated */
case 'n': /* Only members can write */
+ case 'R': /* Registered users only */
case 's': /* Secret channel */
case 't': /* Topic locked */
case 'z': /* Secure connections only */
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 (modeok)
x[0] = *mode_ptr;
}
break;
case 'l': /* Member limit */
+ if (Mode_Limit_Reached(Client, mode_arg_count++))
+ goto chan_exit;
if (!set) {
if (modeok)
x[0] = *mode_ptr;
Channel_Name(Channel));
break;
/* --- Channel user modes --- */
+ case 'a':
+ case 'h':
+ case 'q':
+ if (Client_Type(Client) != CLIENT_SERVER) {
+ connected = IRC_WriteStrClient(Origin,
+ ERR_CHANOPRIVSNEEDED_MSG,
+ Client_ID(Origin),
+ Channel_Name(Channel));
+ goto chan_exit;
+ }
case 'o': /* Channel operator */
case 'v': /* Voice */
if (arg_arg > mode_arg) {
/* --- Channel lists --- */
case 'I': /* Invite lists */
case 'b': /* Ban lists */
+ if (Mode_Limit_Reached(Client, mode_arg_count++))
+ goto chan_exit;
if (arg_arg > mode_arg) {
/* modify list */
if (modeok) {
connected = set
- ? Add_Ban_Invite(*mode_ptr, Origin,
+ ? Add_To_List(*mode_ptr, Origin,
Client, Channel,
Req->argv[arg_arg])
- : Del_Ban_Invite(*mode_ptr, Origin,
+ : Del_From_List(*mode_ptr, Origin,
Client, Channel,
Req->argv[arg_arg]);
} else {
}
break;
default:
- Log(LOG_DEBUG,
- "Unknown mode \"%c%c\" from \"%s\" on %s!?",
- set ? '+' : '-', *mode_ptr, Client_ID(Origin),
- Channel_Name(Channel));
- if (Client_Type(Client) != CLIENT_SERVER)
+ 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_WriteStrClient(Origin,
- ERR_UMODEUNKNOWNFLAG2_MSG,
- Client_ID(Origin),
- set ? '+' : '-', *mode_ptr);
- x[0] = '\0';
- goto chan_exit;
- } /* switch() */
+ 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;
} /* IRC_AWAY */
+/**
+ * Add entries to channel invite, ban and exception lists.
+ *
+ * @param what Can be 'I' for invite or 'b' for ban list.
+ * @param Prefix The originator of the command.
+ * @param Client The sender of the command.
+ * @param Channel The channel of which the list should be modified.
+ * @param Pattern The pattern to add to the list.
+ * @return CONNECTED or DISCONNECTED.
+ */
static bool
-Add_Ban_Invite(int what, CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, const char *Pattern)
+Add_To_List(char what, CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel,
+ const char *Pattern)
{
const char *mask;
- bool already;
- bool ret;
+ struct list_head *list;
- assert( Client != NULL );
- assert( Channel != NULL );
- assert( Pattern != NULL );
+ assert(Client != NULL);
+ assert(Channel != NULL);
+ assert(Pattern != NULL);
assert(what == 'I' || what == 'b');
mask = Lists_MakeMask(Pattern);
- already = Lists_CheckDupeMask(Channel_GetListInvites(Channel), mask);
- if (!already) {
- if (what == 'I')
- ret = Channel_AddInvite(Channel, mask, false);
- else
- ret = Channel_AddBan(Channel, mask);
- if (!ret)
- return CONNECTED;
+ switch(what) {
+ case 'I':
+ list = Channel_GetListInvites(Channel);
+ break;
+ case 'b':
+ list = Channel_GetListBans(Channel);
+ break;
}
- if (already && (Client_Type(Prefix) == CLIENT_SERVER))
- return CONNECTED;
- if (what == 'I')
- return Send_ListChange("+I", Prefix, Client, Channel, mask);
- return Send_ListChange("+b", Prefix, Client, Channel, mask);
+ if (Lists_CheckDupeMask(list, mask))
+ return CONNECTED;
+ if (Client_Type(Client) == CLIENT_USER &&
+ Lists_Count(list) >= MAX_HNDL_CHANNEL_LISTS)
+ return IRC_WriteStrClient(Client, ERR_LISTFULL_MSG,
+ Client_ID(Client),
+ Channel_Name(Channel), mask,
+ MAX_HNDL_CHANNEL_LISTS);
+
+ switch (what) {
+ case 'I':
+ if (!Channel_AddInvite(Channel, mask, false))
+ return CONNECTED;
+ break;
+ case 'b':
+ if (!Channel_AddBan(Channel, mask))
+ return CONNECTED;
+ break;
+ }
+ return Send_ListChange(true, what, Prefix, Client, Channel, mask);
}
+/**
+ * Delete entries from channel invite, ban and exeption lists.
+ *
+ * @param what Can be 'I' for invite or 'b' for ban list.
+ * @param Prefix The originator of the command.
+ * @param Client The sender of the command.
+ * @param Channel The channel of which the list should be modified.
+ * @param Pattern The pattern to add to the list.
+ * @return CONNECTED or DISCONNECTED.
+ */
static bool
-Del_Ban_Invite(int what, CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, const char *Pattern)
+Del_From_List(char what, CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel,
+ const char *Pattern)
{
const char *mask;
struct list_head *list;
- assert( Client != NULL );
- assert( Channel != NULL );
- assert( Pattern != NULL );
+ assert(Client != NULL);
+ assert(Channel != NULL);
+ assert(Pattern != NULL);
assert(what == 'I' || what == 'b');
- mask = Lists_MakeMask( Pattern );
+ mask = Lists_MakeMask(Pattern);
- if (what == 'I')
- list = Channel_GetListInvites(Channel);
- else
- list = Channel_GetListBans(Channel);
+ switch (what) {
+ case 'I':
+ list = Channel_GetListInvites(Channel);
+ break;
+ case 'b':
+ list = Channel_GetListBans(Channel);
+ break;
+ }
+ if (!Lists_CheckDupeMask(list, mask))
+ return CONNECTED;
Lists_Del(list, mask);
- if (what == 'I')
- return Send_ListChange( "-I", Prefix, Client, Channel, mask );
- return Send_ListChange( "-b", Prefix, Client, Channel, mask );
+
+ return Send_ListChange(false, what, Prefix, Client, Channel, mask);
}
+/**
+ * Send information about changed channel ban/invite 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 char *Mode, CLIENT *Prefix, CLIENT *Client,
- CHANNEL *Channel, const char *Mask)
+Send_ListChange(const bool IsAdd, const char ModeChar, CLIENT *Prefix,
+ CLIENT *Client, CHANNEL *Channel, const char *Mask)
{
- bool ok;
+ bool ok = true;
- if( Client_Type( Client ) == CLIENT_USER )
- {
- /* send confirmation to client */
- ok = IRC_WriteStrClientPrefix( Client, Prefix, "MODE %s %s %s", Channel_Name( Channel ), Mode, Mask );
- }
- else 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 %s %s", Channel_Name( Channel ), Mode, Mask );
+ 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 %s %s", Channel_Name( Channel ), Mode, Mask );
-
+ IRC_WriteStrChannelPrefix(Client, Channel, Prefix, false,
+ "MODE %s %c%c %s", Channel_Name(Channel),
+ IsAdd ? '+' : '-', ModeChar, Mask );
+
return ok;
} /* Send_ListChange */
projects / ngircd-alex.git / blobdiff