/**
* 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 */
/*
* Reply to a channel mode request.
*
* @param Origin The originator of the MODE command (prefix).
* @param Channel The channel of which the modes should be sent.
* @return CONNECTED or DISCONNECTED.
*/
static bool
Channel_Mode_Answer_Request(CLIENT *Origin, CHANNEL *Channel)
{
char the_modes[COMMAND_LEN], the_args[COMMAND_LEN], argadd[CLIENT_PASS_LEN];
const char *mode_ptr;
if (!Channel_IsMemberOf(Channel, Origin)) {
/* Not a member: "simple" mode reply */
if (!IRC_WriteStrClient(Origin, RPL_CHANNELMODEIS_MSG,
Client_ID(Origin), Channel_Name(Channel),
Channel_Modes(Channel)))
return DISCONNECTED;
} else {
/* The sender is a member: generate extended reply */
strlcpy(the_modes, Channel_Modes(Channel), sizeof(the_modes));
mode_ptr = the_modes;
the_args[0] = '\0';
while(*mode_ptr) {
switch(*mode_ptr) {
case 'l':
snprintf(argadd, sizeof(argadd), " %lu",
Channel_MaxUsers(Channel));
strlcat(the_args, argadd, sizeof(the_args));
break;
case 'k':
strlcat(the_args, " ", sizeof(the_args));
strlcat(the_args, Channel_Key(Channel),
sizeof(the_args));
break;
}
mode_ptr++;
}
if (the_args[0])
strlcat(the_modes, the_args, sizeof(the_modes));
if (!IRC_WriteStrClient(Origin, RPL_CHANNELMODEIS_MSG,
Client_ID(Origin), Channel_Name(Channel),
the_modes))
return DISCONNECTED;
}
#ifndef STRICT_RFC
/* Channel creation time */
if (!IRC_WriteStrClient(Origin, RPL_CREATIONTIME_MSG,
Client_ID(Origin), Channel_Name(Channel),
Channel_CreationTime(Channel)))
return DISCONNECTED;
#endif
return CONNECTED;
}
GLOBAL bool
Channel_AddBan(CHANNEL *c, const char *mask )
{
struct list_head *h = Channel_GetListBans(c);
LogDebug("Adding \"%s\" to \"%s\" ban list", mask, Channel_Name(c));
return Lists_Add(h, mask, false, NULL);
}
/**
* Acknowledge user JOIN request and send "channel info" numerics.
*
* @param Client Client used to prefix the genrated commands
* @param target Forward commands/numerics to this user
* @param chan Channel structure
* @param channame Channel name
*/
static bool
join_send_topic(CLIENT *Client, CLIENT *target, CHANNEL *chan,
const char *channame)
{
const char *topic;
if (Client_Type(Client) != CLIENT_USER)
return true;
/* acknowledge join */
if (!IRC_WriteStrClientPrefix(Client, target, "JOIN :%s", channame))
return false;
/* Send topic to client, if any */
topic = Channel_Topic(chan);
assert(topic != NULL);
if (*topic) {
if (!IRC_WriteStrClient(Client, RPL_TOPIC_MSG,
Client_ID(Client), channame, topic))
return false;
#ifndef STRICT_RFC
if (!IRC_WriteStrClient(Client, RPL_TOPICSETBY_MSG,
Client_ID(Client), channame,
Channel_TopicWho(chan),
Channel_TopicTime(chan)))
return false;
#endif
}
/* send list of channel members to client */
if (!IRC_Send_NAMES(Client, chan))
return false;
return IRC_WriteStrClient(Client, RPL_ENDOFNAMES_MSG, Client_ID(Client),
Channel_Name(chan));
} /* join_send_topic */
GLOBAL bool
Channel_AddExcept(CHANNEL *c, const char *mask, const char *who )
{
struct list_head *h = Channel_GetListExcepts(c);
LogDebug("Adding \"%s\" to \"%s\" exception list", mask, Channel_Name(c));
return Lists_Add(h, mask, time(NULL), who, false);
}
GLOBAL bool
Channel_AddInvite(CHANNEL *c, const char *mask, bool onlyonce, const char *who )
{
struct list_head *h = Channel_GetListInvites(c);
LogDebug("Adding \"%s\" to \"%s\" invite list", mask, Channel_Name(c));
return Lists_Add(h, mask, time(NULL), who, onlyonce);
}
/**
* Add entries to channel invite, ban and exception lists.
*
* @param what Can be 'I' for invite, 'b' for ban, and 'e' for exception 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_To_List(char what, CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel,
const char *Pattern)
{
char mask[MASK_LEN];
struct list_head *list = NULL;
long int current_count;
assert(Client != NULL);
assert(Channel != NULL);
assert(Pattern != NULL);
assert(what == 'I' || what == 'b' || what == 'e');
Lists_MakeMask(Pattern, mask, sizeof(mask));
current_count = Lists_Count(Channel_GetListInvites(Channel))
+ Lists_Count(Channel_GetListExcepts(Channel))
+ Lists_Count(Channel_GetListBans(Channel));
switch(what) {
case 'I':
list = Channel_GetListInvites(Channel);
break;
case 'b':
list = Channel_GetListBans(Channel);
break;
case 'e':
list = Channel_GetListExcepts(Channel);
break;
}
if (Lists_CheckDupeMask(list, mask))
return CONNECTED;
if (Client_Type(Client) == CLIENT_USER &&
current_count >= MAX_HNDL_CHANNEL_LISTS)
return IRC_WriteErrClient(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, Client_ID(Client)))
return CONNECTED;
break;
case 'b':
if (!Channel_AddBan(Channel, mask, Client_ID(Client)))
return CONNECTED;
break;
case 'e':
if (!Channel_AddExcept(Channel, mask, Client_ID(Client)))
return CONNECTED;
break;
}
return Send_ListChange(true, what, Prefix, Client, Channel, mask);
}
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);
}
static bool
ShowChannelList(struct list_head *head, CLIENT *Client, CHANNEL *Channel,
char *msg, char *msg_end)
{
struct list_elem *e;
assert (Client != NULL);
assert (Channel != NULL);
e = Lists_GetFirst(head);
while (e) {
if (!IRC_WriteStrClient(Client, msg, Client_ID(Client),
Channel_Name(Channel),
Lists_GetMask(e)))
return DISCONNECTED;
e = Lists_GetNext(e);
}
return IRC_WriteStrClient(Client, msg_end, Client_ID(Client),
Channel_Name(Channel));
}
/**
* Part from all channels.
*
* RFC 2812, (3.2.1 Join message Command):
* Note that this message accepts a special argument ("0"), which is a
* special request to leave all channels the user is currently a member of.
* The server will process this message as if the user had sent a PART
* command (See Section 3.2.2) for each channel he is a member of.
*
* @param client Client that initiated the part request
* @param target Client that should part all joined channels
* @returns CONNECTED or DISCONNECTED
*/
static bool
part_from_all_channels(CLIENT* client, CLIENT *target)
{
CL2CHAN *cl2chan;
CHANNEL *chan;
while ((cl2chan = Channel_FirstChannelOf(target))) {
chan = Channel_GetChannel(cl2chan);
assert( chan != NULL );
Channel_Part(target, client, Channel_Name(chan), Client_ID(target));
}
return CONNECTED;
} /* part_from_all_channels */
/**
* Send CHANINFO commands to a new server (inform it about existing channels).
* @param Client New server
* @param Chan Channel
*/
static bool
Send_CHANINFO(CLIENT * Client, CHANNEL * Chan)
{
char *modes, *topic;
bool has_k, has_l;
#ifdef DEBUG
Log(LOG_DEBUG, "Sending CHANINFO commands for \"%s\" ...",
Channel_Name(Chan));
#endif
modes = Channel_Modes(Chan);
topic = Channel_Topic(Chan);
if (!*modes && !*topic)
return CONNECTED;
has_k = Channel_HasMode(Chan, 'k');
has_l = Channel_HasMode(Chan, 'l');
/* send CHANINFO */
if (!has_k && !has_l) {
if (!*topic) {
/* "CHANINFO <chan> +<modes>" */
return IRC_WriteStrClient(Client, "CHANINFO %s +%s",
Channel_Name(Chan), modes);
}
/* "CHANINFO <chan> +<modes> :<topic>" */
return IRC_WriteStrClient(Client, "CHANINFO %s +%s :%s",
Channel_Name(Chan), modes, topic);
}
/* "CHANINFO <chan> +<modes> <key> <limit> :<topic>" */
return IRC_WriteStrClient(Client, "CHANINFO %s +%s %s %lu :%s",
Channel_Name(Chan), modes,
has_k ? Channel_Key(Chan) : "*",
has_l ? Channel_MaxUsers(Chan) : 0, topic);
} /* Send_CHANINFO */
/**
* Send a specific list to a remote server.
*/
static bool
Send_List(CLIENT *Client, CHANNEL *Chan, struct list_head *Head, char Type)
{
struct list_elem *elem;
elem = Lists_GetFirst(Head);
while (elem) {
if (!IRC_WriteStrClient(Client, "MODE %s +%c %s",
Channel_Name(Chan), Type,
Lists_GetMask(elem))) {
return DISCONNECTED;
}
elem = Lists_GetNext(elem);
}
return CONNECTED;
}
// Function to render the guide item on the screen. Send it the required text
void MultiList_RenderChannel( word rgn, word svcId, int row, int col ){
int x, y, w, h;
dword fc = DISPLAY_EVENT;
int svcNum, svcType;
TYPE_TapChInfo chInfo;
char text[128];
// Calculate the position to render the item
// w = (720-((Panel_Left_X-DISPLAY_X_OFFSET)*2))/MultiList_Cols; // [ ][ ][ ]
w = DISPLAY_ROW_WIDTH/MultiList_Cols; // [ ][ ][ ]
x = Panel_Left_X + (w*col) + DISPLAY_GAP; // Offset plus the coloumn
h = 22;
y = (Panel_Left_Y + (( h + DISPLAY_GAP) * (0)))+(((( h + DISPLAY_GAP) * (MultiList_MaxEvents))+( h + DISPLAY_GAP))*row);
// Draw background for item it previous or selected otherwise the background on text will do the job
TAP_Osd_FillBox(rgn, x-1, y, w-2, h, DISPLAY_MAIN);
svcNum = GetSvcNum(svcId);
svcType = GetSvcType(svcId);
sprintf( text, "%d, %d, %s\0", svcNum, svcType, Channel_Name(svcNum,svcType));
TAP_Channel_GetInfo( svcType, svcNum, &chInfo );
TAP_Osd_PutStringAf1419( rgn, x+5, y+1, x+(w-10), chInfo.chName, fc, COLOR_None );
}
/**
* 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 */
/**
* Handler for the IRC "LIST" 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_LIST( CLIENT *Client, REQUEST *Req )
{
char *pattern;
CHANNEL *chan;
CLIENT *from, *target;
int count = 0;
assert(Client != NULL);
assert(Req != NULL);
_IRC_GET_SENDER_OR_RETURN_(from, Req, Client)
if (Req->argc > 0)
pattern = strtok(Req->argv[0], ",");
else
pattern = "*";
if (Req->argc == 2) {
/* Forward to other server? */
target = Client_Search(Req->argv[1]);
if (! target || Client_Type(target) != CLIENT_SERVER)
return IRC_WriteErrClient(from, ERR_NOSUCHSERVER_MSG,
Client_ID(Client),
Req->argv[1]);
if (target != Client_ThisServer()) {
/* Target is indeed an other server, forward it! */
return IRC_WriteStrClientPrefix(target, from,
"LIST %s :%s",
Req->argv[0],
Req->argv[1]);
}
}
while (pattern) {
/* Loop through all the channels */
if (Req->argc > 0)
ngt_LowerStr(pattern);
chan = Channel_First();
while (chan) {
/* Check search pattern */
if (MatchCaseInsensitive(pattern, Channel_Name(chan))) {
/* Gotcha! */
if (!Channel_HasMode(chan, 's')
|| Channel_IsMemberOf(chan, from)
|| (!Conf_MorePrivacy
&& Client_HasMode(Client, 'o')
&& Client_Conn(Client) > NONE))
{
if ((Conf_MaxListSize > 0)
&& IRC_CheckListTooBig(from, count,
Conf_MaxListSize,
"LIST"))
break;
if (!IRC_WriteStrClient(from,
RPL_LIST_MSG, Client_ID(from),
Channel_Name(chan),
Channel_MemberCount(chan),
Channel_Topic( chan )))
return DISCONNECTED;
count++;
}
}
chan = Channel_Next(chan);
}
/* Get next name ... */
if(Req->argc > 0)
pattern = strtok(NULL, ",");
else
pattern = NULL;
}
return IRC_WriteStrClient(from, RPL_LISTEND_MSG, Client_ID(from));
} /* IRC_LIST */
/**
* Handler for the IRC command "INVITE".
*
* @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_INVITE(CLIENT *Client, REQUEST *Req)
{
CHANNEL *chan;
CLIENT *target, *from;
const char *colon_if_necessary;
bool remember = false;
assert( Client != NULL );
assert( Req != NULL );
_IRC_ARGC_EQ_OR_RETURN_(Client, Req, 2)
_IRC_GET_SENDER_OR_RETURN_(from, Req, Client)
/* Search user */
target = Client_Search(Req->argv[0]);
if (!target || (Client_Type(target) != CLIENT_USER))
return IRC_WriteStrClient(from, ERR_NOSUCHNICK_MSG,
Client_ID(Client), Req->argv[0]);
chan = Channel_Search(Req->argv[1]);
if (chan) {
/* Channel exists. Is the user a valid member of the channel? */
if (!Channel_IsMemberOf(chan, from))
return IRC_WriteStrClient(from, ERR_NOTONCHANNEL_MSG, Client_ID(Client), Req->argv[1]);
/* Is the channel "invite-disallow"? */
if (strchr(Channel_Modes(chan), 'V'))
return IRC_WriteStrClient(from, ERR_NOINVITE_MSG,
Client_ID(from), Channel_Name(chan));
/* Is the channel "invite-only"? */
if (strchr(Channel_Modes(chan), 'i')) {
/* Yes. The user must be channel owner/admin/operator/halfop! */
if (!strchr(Channel_UserModes(chan, from), 'q') &&
!strchr(Channel_UserModes(chan, from), 'a') &&
!strchr(Channel_UserModes(chan, from), 'o') &&
!strchr(Channel_UserModes(chan, from), 'h'))
return IRC_WriteStrClient(from, ERR_CHANOPRIVSNEEDED_MSG,
Client_ID(from), Channel_Name(chan));
remember = true;
}
/* Is the target user already member of the channel? */
if (Channel_IsMemberOf(chan, target))
return IRC_WriteStrClient(from, ERR_USERONCHANNEL_MSG,
Client_ID(from), Req->argv[0], Req->argv[1]);
/* If the target user is banned on that channel: remember invite */
if (Lists_Check(Channel_GetListBans(chan), target))
remember = true;
if (remember) {
/* We must remember this invite */
if (!Channel_AddInvite(chan, Client_Mask(target), true))
return CONNECTED;
}
}
LogDebug("User \"%s\" invites \"%s\" to \"%s\" ...", Client_Mask(from),
Req->argv[0], Req->argv[1]);
/*
* RFC 2812 says:
* 'There is no requirement that the channel [..] must exist or be a valid channel'
* The problem with this is that this allows the "channel" to contain spaces,
* in which case we must prefix its name with a colon to make it clear that
* it is only a single argument.
*/
colon_if_necessary = strchr(Req->argv[1], ' ') ? ":":"";
/* Inform target client */
IRC_WriteStrClientPrefix(target, from, "INVITE %s %s%s", Req->argv[0],
colon_if_necessary, Req->argv[1]);
if (Client_Conn(target) > NONE) {
/* The target user is local, so we have to send the status code */
if (!IRC_WriteStrClientPrefix(from, target, RPL_INVITING_MSG,
Client_ID(from), Req->argv[0], colon_if_necessary, Req->argv[1]))
return DISCONNECTED;
if (strchr(Client_Modes(target), 'a') &&
!IRC_WriteStrClient(from, RPL_AWAY_MSG, Client_ID(from),
Client_ID(target), Client_Away(target)))
return DISCONNECTED;
}
return CONNECTED;
} /* IRC_INVITE */
/**
* 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 */
/**
* Announce a channel and its users in the network.
*/
static bool
Announce_Channel(CLIENT *Client, CHANNEL *Chan)
{
CL2CHAN *cl2chan;
CLIENT *cl;
char str[COMMAND_LEN], *ptr;
bool njoin, xop;
/* Check features of remote server */
njoin = Conn_Options(Client_Conn(Client)) & CONN_RFC1459 ? false : true;
xop = Client_HasFlag(Client, 'X') ? true : false;
/* Get all the members of this channel */
cl2chan = Channel_FirstMember(Chan);
snprintf(str, sizeof(str), "NJOIN %s :", Channel_Name(Chan));
while (cl2chan) {
cl = Channel_GetClient(cl2chan);
assert(cl != NULL);
if (njoin) {
/* RFC 2813: send NJOIN with nicknames and modes
* (if user is channel operator or has voice) */
if (str[strlen(str) - 1] != ':')
strlcat(str, ",", sizeof(str));
/* Prepare user prefix (ChanOp, voiced, ...) */
if (xop && Channel_UserHasMode(Chan, cl, 'q'))
strlcat(str, "~", sizeof(str));
if (xop && Channel_UserHasMode(Chan, cl, 'a'))
strlcat(str, "&", sizeof(str));
if (Channel_UserHasMode(Chan, cl, 'o'))
strlcat(str, "@", sizeof(str));
if (xop && Channel_UserHasMode(Chan, cl, 'h'))
strlcat(str, "%", sizeof(str));
if (Channel_UserHasMode(Chan, cl, 'v'))
strlcat(str, "+", sizeof(str));
strlcat(str, Client_ID(cl), sizeof(str));
/* Send the data if the buffer is "full" */
if (strlen(str) > (sizeof(str) - CLIENT_NICK_LEN - 8)) {
if (!IRC_WriteStrClient(Client, "%s", str))
return DISCONNECTED;
snprintf(str, sizeof(str), "NJOIN %s :",
Channel_Name(Chan));
}
} else {
/* RFC 1459: no NJOIN, send JOIN and MODE */
if (!IRC_WriteStrClientPrefix(Client, cl, "JOIN %s",
Channel_Name(Chan)))
return DISCONNECTED;
ptr = Channel_UserModes(Chan, cl);
while (*ptr) {
if (!IRC_WriteStrClientPrefix(Client, cl,
"MODE %s +%c %s",
Channel_Name(Chan), ptr[0],
Client_ID(cl)))
return DISCONNECTED;
ptr++;
}
}
cl2chan = Channel_NextMember(Chan, cl2chan);
}
/* Data left in the buffer? */
if (str[strlen(str) - 1] != ':') {
/* Yes, send it ... */
if (!IRC_WriteStrClient(Client, "%s", str))
return DISCONNECTED;
}
return CONNECTED;
} /* Announce_Channel */
