2 * IRC - Internet Relay Chat, ircd/m_list.c
3 * Copyright (C) 1990 Jarkko Oikarinen and
4 * University of Oulu, Computing Center
6 * See file AUTHORS in IRC package for additional names of
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 1, or (at your option)
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 * m_functions execute protocol messages on this server:
29 * cptr is always NON-NULL, pointing to a *LOCAL* client
30 * structure (with an open socket connected!). This
31 * identifies the physical socket where the message
32 * originated (or which caused the m_function to be
33 * executed--some m_functions may call others...).
35 * sptr is the source of the message, defined by the
36 * prefix part of the message if present. If not
37 * or prefix not found, then sptr==cptr.
39 * (!IsServer(cptr)) => (cptr == sptr), because
40 * prefixes are taken *only* from servers...
43 * (sptr == cptr) => the message didn't
46 * (sptr != cptr && IsServer(sptr) means
47 * the prefix specified servername. (?)
49 * (sptr != cptr && !IsServer(sptr) means
50 * that message originated from a remote
55 * (!IsServer(sptr)) means that, sptr can safely
56 * taken as defining the target structure of the
57 * message in this server.
59 * *Always* true (if 'parse' and others are working correct):
61 * 1) sptr->from == cptr (note: cptr->from == cptr)
63 * 2) MyConnect(sptr) <=> sptr == cptr (e.g. sptr
64 * *cannot* be a local connection, unless it's
65 * actually cptr!). [MyConnect(x) should probably
66 * be defined as (x == x->from) --msa ]
68 * parc number of variable parameter strings (if zero,
69 * parv is allowed to be NULL)
71 * parv a NULL terminated list of parameter pointers,
73 * parv[0], sender (prefix string), if not present
74 * this points to an empty string.
75 * parv[1]...parv[parc-1]
76 * pointers to additional parameters
77 * parv[parc] == NULL, *always*
79 * note: it is guaranteed that parv[0]..parv[parc-1] are all
86 * No need to include handlers.h here the signatures must match
87 * and we don't need to force a rebuild of all the handlers everytime
88 * we add a new one to the list. --Bleep
96 #include "ircd_alloc.h"
97 #include "ircd_chattr.h"
98 #include "ircd_features.h"
100 #include "ircd_reply.h"
101 #include "ircd_string.h"
104 #include "numnicks.h"
111 #define LPARAM_ERROR -1
112 #define LPARAM_SUCCESS 0
113 #define LPARAM_CHANNEL 1
115 static struct ListingArgs la_init = {
116 2147483647, /* max_time */
118 4294967295U, /* max_users */
120 0, /* topic_limits */
121 2147483647, /* max_topic_time */
122 0, /* min_topic_time */
126 static struct ListingArgs la_default = {
127 2147483647, /* max_time */
129 4294967295U, /* max_users */
131 0, /* topic_limits */
132 2147483647, /* max_topic_time */
133 0, /* min_topic_time */
138 show_usage(struct Client *sptr)
140 if (!sptr) { /* configuration file error... */
141 log_write(LS_CONFIG, L_ERROR, 0, "Invalid default list parameter");
145 send_reply(sptr, RPL_LISTUSAGE,
146 "Usage: \002/QUOTE LIST\002 \037parameters\037");
147 send_reply(sptr, RPL_LISTUSAGE,
148 "Where \037parameters\037 is a space or comma seperated "
149 "list of one or more of:");
150 send_reply(sptr, RPL_LISTUSAGE,
151 " \002<\002\037max_users\037 ; Show all channels with less "
152 "than \037max_users\037.");
153 send_reply(sptr, RPL_LISTUSAGE,
154 " \002>\002\037min_users\037 ; Show all channels with more "
155 "than \037min_users\037.");
156 send_reply(sptr, RPL_LISTUSAGE,
157 " \002C<\002\037max_minutes\037 ; Channels that exist less "
158 "than \037max_minutes\037.");
159 send_reply(sptr, RPL_LISTUSAGE,
160 " \002C>\002\037min_minutes\037 ; Channels that exist more "
161 "than \037min_minutes\037.");
162 send_reply(sptr, RPL_LISTUSAGE,
163 " \002T<\002\037max_minutes\037 ; Channels with a topic last "
164 "set less than \037max_minutes\037 ago.");
165 send_reply(sptr, RPL_LISTUSAGE,
166 " \002T>\002\037min_minutes\037 ; Channels with a topic last "
167 "set more than \037min_minutes\037 ago.");
168 send_reply(sptr, RPL_LISTUSAGE,
169 "Example: LIST <3,>1,C<10,T>0 ; 2 users, younger than 10 "
172 return LPARAM_ERROR; /* return error condition */
176 param_parse(struct Client *sptr, const char *param, struct ListingArgs *args,
185 if (!param) /* NULL param == default--no list param */
186 return LPARAM_SUCCESS;
193 args->topic_limits = 1;
200 if (*param != '<' && *param != '>')
201 return show_usage(sptr);
208 if (!IsDigit(*param)) /* must start with a digit */
209 return show_usage(sptr);
211 val = strtol(param, (char **)¶m, 10); /* convert it... */
213 if (*param != ',' && *param != ' ' && *param != '\0') /* check syntax */
214 return show_usage(sptr);
216 if (is_time && val < 80000000) /* Toggle UTC/offset */
217 val = TStime() - val * 60;
220 case 0: /* number of users on channel */
222 args->max_users = val;
224 args->min_users = val;
227 case 1: /* channel topic */
229 args->min_topic_time = val;
231 args->max_topic_time = val;
234 case 2: /* channel creation time */
236 args->min_time = val;
238 args->max_time = val;
243 default: /* channel name? */
244 if (!permit_chan || !IsChannelName(param))
245 return show_usage(sptr);
247 return LPARAM_CHANNEL;
251 if (!*param) /* hit end of string? */
257 return LPARAM_SUCCESS;
261 list_set_default(void)
263 la_default = la_init; /* start off with a clean slate... */
265 if (param_parse(0, feature_str(FEAT_DEFAULT_LIST_PARAM), &la_default, 0) !=
267 la_default = la_init; /* recover from error by switching to default */
271 * m_list - generic message handler
273 * parv[0] = sender prefix
274 * parv[1] = channel list or user/time limit
275 * parv[2...] = more user/time limits
277 int m_list(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
279 struct Channel *chptr;
281 int show_channels = 0, param;
282 struct ListingArgs args;
284 if (cli_listing(sptr)) /* Already listing ? */
286 cli_listing(sptr)->chptr->mode.mode &= ~MODE_LISTED;
287 MyFree(cli_listing(sptr));
288 cli_listing(sptr) = 0;
289 send_reply(sptr, RPL_LISTEND);
291 return 0; /* Let LIST abort a listing. */
294 if (parc < 2) /* No arguments given to /LIST ? */
297 args = la_init; /* initialize argument to blank slate */
299 for (param = 1; parv[param]; param++) { /* process each parameter */
300 switch (param_parse(sptr, parv[param], &args, parc == 2)) {
301 case LPARAM_ERROR: /* error encountered, usage already sent, return */
305 case LPARAM_CHANNEL: /* show channel instead */
309 case LPARAM_SUCCESS: /* parse succeeded */
315 send_reply(sptr, RPL_LISTSTART);
319 if (args.max_users > args.min_users + 1 && args.max_time > args.min_time &&
320 args.max_topic_time > args.min_topic_time) /* Sanity check */
322 cli_listing(sptr) = (struct ListingArgs*) MyMalloc(sizeof(struct ListingArgs));
323 assert(0 != cli_listing(sptr));
324 memcpy(cli_listing(sptr), &args, sizeof(struct ListingArgs));
325 if ((cli_listing(sptr)->chptr = GlobalChannelList)) {
326 int m = GlobalChannelList->mode.mode & MODE_LISTED;
327 list_next_channels(sptr, 64);
328 GlobalChannelList->mode.mode |= m;
331 MyFree(cli_listing(sptr));
332 cli_listing(sptr) = 0;
334 send_reply(sptr, RPL_LISTEND);
338 for (; (name = ircd_strtok(&p, parv[1], ",")); parv[1] = 0)
340 chptr = FindChannel(name);
341 if (chptr && ShowChannel(sptr, chptr) && cli_user(sptr))
342 send_reply(sptr, RPL_LIST, chptr->chname,
343 chptr->users - number_of_zombies(chptr), chptr->topic);
346 send_reply(sptr, RPL_LISTEND);