--- /dev/null
+/*
+ * IRC - Internet Relay Chat, ircd/m_list.c
+ * Copyright (C) 1990 Jarkko Oikarinen and
+ * University of Oulu, Computing Center
+ *
+ * See file AUTHORS in IRC package for additional names of
+ * the programmers.
+ *
+ * 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
+ * the Free Software Foundation; either version 1, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * $Id$
+ */
+
+/*
+ * m_functions execute protocol messages on this server:
+ *
+ * cptr is always NON-NULL, pointing to a *LOCAL* client
+ * structure (with an open socket connected!). This
+ * identifies the physical socket where the message
+ * originated (or which caused the m_function to be
+ * executed--some m_functions may call others...).
+ *
+ * sptr is the source of the message, defined by the
+ * prefix part of the message if present. If not
+ * or prefix not found, then sptr==cptr.
+ *
+ * (!IsServer(cptr)) => (cptr == sptr), because
+ * prefixes are taken *only* from servers...
+ *
+ * (IsServer(cptr))
+ * (sptr == cptr) => the message didn't
+ * have the prefix.
+ *
+ * (sptr != cptr && IsServer(sptr) means
+ * the prefix specified servername. (?)
+ *
+ * (sptr != cptr && !IsServer(sptr) means
+ * that message originated from a remote
+ * user (not local).
+ *
+ * combining
+ *
+ * (!IsServer(sptr)) means that, sptr can safely
+ * taken as defining the target structure of the
+ * message in this server.
+ *
+ * *Always* true (if 'parse' and others are working correct):
+ *
+ * 1) sptr->from == cptr (note: cptr->from == cptr)
+ *
+ * 2) MyConnect(sptr) <=> sptr == cptr (e.g. sptr
+ * *cannot* be a local connection, unless it's
+ * actually cptr!). [MyConnect(x) should probably
+ * be defined as (x == x->from) --msa ]
+ *
+ * parc number of variable parameter strings (if zero,
+ * parv is allowed to be NULL)
+ *
+ * parv a NULL terminated list of parameter pointers,
+ *
+ * parv[0], sender (prefix string), if not present
+ * this points to an empty string.
+ * parv[1]...parv[parc-1]
+ * pointers to additional parameters
+ * parv[parc] == NULL, *always*
+ *
+ * note: it is guaranteed that parv[0]..parv[parc-1] are all
+ * non-NULL pointers.
+ */
+#include "config.h"
+
+#include "channel.h"
+#include "client.h"
+#include "hash.h"
+#include "ircd.h"
+#include "ircd_alloc.h"
+#include "ircd_chattr.h"
+#include "ircd_features.h"
+#include "ircd_log.h"
+#include "ircd_reply.h"
+#include "ircd_string.h"
+#include "msg.h"
+#include "numeric.h"
+#include "numnicks.h"
+#include "s_bsd.h"
+#include "send.h"
+
+/* #include <assert.h> -- Now using assert in ircd_log.h */
+#include <stdlib.h>
+#include <string.h>
+
+#define LPARAM_ERROR -1
+#define LPARAM_SUCCESS 0
+#define LPARAM_CHANNEL 1
+
+static struct ListingArgs la_init = {
+ 2147483647, /* max_time */
+ 0, /* min_time */
+ 4294967295U, /* max_users */
+ 0, /* min_users */
+ 0, /* flags */
+ 2147483647, /* max_topic_time */
+ 0, /* min_topic_time */
+ 0, /* bucket */
+ {0} /* wildcard */
+};
+
+static struct ListingArgs la_default = {
+ 2147483647, /* max_time */
+ 0, /* min_time */
+ 4294967295U, /* max_users */
+ 0, /* min_users */
+ 0, /* flags */
+ 2147483647, /* max_topic_time */
+ 0, /* min_topic_time */
+ 0, /* bucket */
+ {0} /* wildcard */
+};
+
+static int
+show_usage(struct Client *sptr)
+{
+ if (!sptr) { /* configuration file error... */
+ log_write(LS_CONFIG, L_ERROR, 0, "Invalid default list parameter");
+ return LPARAM_ERROR;
+ }
+
+ send_reply(sptr, RPL_LISTUSAGE,
+ "Usage: \002/QUOTE LIST\002 \037parameters\037");
+ send_reply(sptr, RPL_LISTUSAGE,
+ "Where \037parameters\037 is a space or comma separated "
+ "list of one or more of:");
+ send_reply(sptr, RPL_LISTUSAGE,
+ " \002<\002\037max_users\037 ; Show all channels with less "
+ "than \037max_users\037.");
+ send_reply(sptr, RPL_LISTUSAGE,
+ " \002>\002\037min_users\037 ; Show all channels with more "
+ "than \037min_users\037.");
+ send_reply(sptr, RPL_LISTUSAGE,
+ " \002C<\002\037max_minutes\037 ; Channels that exist less "
+ "than \037max_minutes\037.");
+ send_reply(sptr, RPL_LISTUSAGE,
+ " \002C>\002\037min_minutes\037 ; Channels that exist more "
+ "than \037min_minutes\037.");
+ send_reply(sptr, RPL_LISTUSAGE,
+ " \002T<\002\037max_minutes\037 ; Channels with a topic last "
+ "set less than \037max_minutes\037 ago.");
+ send_reply(sptr, RPL_LISTUSAGE,
+ " \002T>\002\037min_minutes\037 ; Channels with a topic last "
+ "set more than \037min_minutes\037 ago.");
+ send_reply(sptr, RPL_LISTUSAGE,
+ " \037pattern\037 ; Channels with names matching "
+ "\037pattern\037. ");
+ send_reply(sptr, RPL_LISTUSAGE,
+ " !\037pattern\037 ; Channels with names not "
+ "matching \037pattern\037. ");
+ send_reply(sptr, RPL_LISTUSAGE, "Note: Patterns may contain * and ?. "
+ "You may only give one pattern match constraint.");
+ if (IsAnOper(sptr)) {
+ send_reply(sptr, RPL_LISTUSAGE,
+ " \002S\002 ; Show secret channels.");
+ send_reply(sptr, RPL_LISTUSAGE,
+ " \002M\002 ; Show channel modes.");
+ }
+ send_reply(sptr, RPL_LISTUSAGE,
+ "Example: LIST <3,>1,C<10,T>0,#a* ; 2 users, younger than 10 "
+ "min., topic set., starts with #a");
+
+ return LPARAM_ERROR; /* return error condition */
+}
+
+static int
+param_parse(struct Client *sptr, const char *param, struct ListingArgs *args,
+ int permit_chan)
+{
+ int is_time = 0;
+ char dir;
+ unsigned int val;
+ char *tmp1, *tmp2;
+
+ assert(0 != args);
+
+ if (!param) /* NULL param == default--no list param */
+ return LPARAM_SUCCESS;
+
+ while (1) {
+ switch (*param) {
+ case 'T':
+ case 't':
+ is_time++;
+ args->flags |= LISTARG_TOPICLIMITS;
+ /*FALLTHROUGH*/
+
+ case 'C':
+ case 'c':
+ is_time++;
+ param++;
+ if (*param != '<' && *param != '>')
+ return show_usage(sptr);
+ /*FALLTHROUGH*/
+
+ case '<':
+ case '>':
+ dir = *(param++);
+
+ if (!IsDigit(*param)) /* must start with a digit */
+ return show_usage(sptr);
+
+ val = strtol(param, (char **)¶m, 10); /* convert it... */
+
+ if (*param != ',' && *param != ' ' && *param != '\0') /* check syntax */
+ return show_usage(sptr);
+
+ if (is_time && val < 80000000) {
+ /* Convert age to timestamp and reverse direction */
+ val = TStime() - val * 60;
+ dir = (dir == '>') ? '<' : '>';
+ }
+
+ switch (is_time) {
+ case 0: /* number of users on channel */
+ if (dir == '<')
+ args->max_users = val;
+ else
+ args->min_users = val;
+ break;
+
+ case 1: /* channel creation time */
+ if (dir == '<')
+ args->max_time = val;
+ else
+ args->min_time = val;
+ break;
+
+ case 2: /* channel topic */
+ if (dir == '<')
+ args->max_topic_time = val;
+ else
+ args->min_topic_time = val;
+ break;
+ }
+ break;
+
+ case 'S':
+ case 's':
+ if (!IsAnOper(sptr) || !HasPriv(sptr, PRIV_LIST_CHAN))
+ return show_usage(sptr);
+
+ args->flags |= LISTARG_SHOWSECRET;
+ param++;
+
+ if (*param != ',' && *param != ' ' && *param != '\0') /* check syntax */
+ return show_usage(sptr);
+ break;
+
+ case 'M':
+ case 'm':
+ if (!IsAnOper(sptr) || !HasPriv(sptr, PRIV_LIST_CHAN))
+ return show_usage(sptr);
+
+ args->flags |= LISTARG_SHOWMODES;
+ param++;
+
+ if (*param != ',' && *param != ' ' && *param != '\0') /* check syntax */
+ return show_usage(sptr);
+ break;
+
+ default:
+ /* It might be a wildcard... */
+ if (strchr(param, '*') ||
+ strchr(param, '?'))
+ {
+ if (param[0] == '!')
+ {
+ param++;
+ args->flags |= LISTARG_NEGATEWILDCARD;
+ }
+
+ /* Only one wildcard allowed... */
+ if (args->wildcard[0] != 0)
+ return show_usage(sptr);
+
+ /* If its not going to match anything, don't bother. */
+ if (param[0] != '*' &&
+ param[0] != '?' &&
+ param[0] != '#' &&
+ param[0] != '&')
+ return show_usage(sptr);
+
+ tmp1 = strchr(param, ',');
+ tmp2 = strchr(param, ' ');
+ if (tmp2 && (!tmp1 || (tmp2 < tmp1)))
+ tmp1 = tmp2;
+
+ if (tmp1)
+ *tmp1++ = 0;
+
+ ircd_strncpy(args->wildcard, param, CHANNELLEN-1);
+ args->wildcard[CHANNELLEN-1] = 0;
+
+ if (tmp1 == NULL)
+ return LPARAM_SUCCESS;
+
+ param = tmp1;
+ continue;
+ }
+
+ /* channel name? */
+ if (!permit_chan || !IsChannelName(param))
+ return show_usage(sptr);
+
+ return LPARAM_CHANNEL;
+ }
+
+ if (!*param) /* hit end of string? */
+ break;
+
+ param++;
+ }
+
+ return LPARAM_SUCCESS;
+}
+
+void
+list_set_default(void)
+{
+ la_default = la_init; /* start off with a clean slate... */
+
+ if (param_parse(0, feature_str(FEAT_DEFAULT_LIST_PARAM), &la_default, 0) !=
+ LPARAM_SUCCESS)
+ la_default = la_init; /* recover from error by switching to default */
+}
+
+/*
+ * m_list - generic message handler
+ *
+ * parv[0] = sender prefix
+ * parv[1] = channel list or user/time limit
+ * parv[2...] = more user/time limits
+ */
+int m_list(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
+{
+ struct Channel *chptr;
+ char *name, *p = 0;
+ int show_channels = 0, param;
+ struct ListingArgs args;
+
+ if (cli_listing(sptr)) /* Already listing ? */
+ {
+ if (cli_listing(sptr))
+ MyFree(cli_listing(sptr));
+ cli_listing(sptr) = 0;
+ send_reply(sptr, RPL_LISTEND);
+ update_write(sptr);
+ if (parc < 2 || 0 == ircd_strcmp("STOP", parv[1]))
+ return 0; /* Let LIST or LIST STOP abort a listing. */
+ }
+
+ if (parc < 2) /* No arguments given to /LIST ? */
+ args = la_default;
+ else {
+ args = la_init; /* initialize argument to blank slate */
+
+ for (param = 1; parv[param]; param++) { /* process each parameter */
+ switch (param_parse(sptr, parv[param], &args, parc == 2)) {
+ case LPARAM_ERROR: /* error encountered, usage already sent, return */
+ return 0;
+
+ case LPARAM_CHANNEL: /* show channel instead */
+ show_channels++;
+ break;
+
+ case LPARAM_SUCCESS: /* parse succeeded */
+ break;
+ }
+ }
+ }
+
+ send_reply(sptr, RPL_LISTSTART);
+
+ if (!show_channels)
+ {
+ if (args.max_users > args.min_users + 1 && args.max_time > args.min_time &&
+ args.max_topic_time > args.min_topic_time) /* Sanity check */
+ {
+ cli_listing(sptr) = (struct ListingArgs*) MyMalloc(sizeof(struct ListingArgs));
+ assert(0 != cli_listing(sptr));
+ memcpy(cli_listing(sptr), &args, sizeof(struct ListingArgs));
+ list_next_channels(sptr);
+ return 0;
+ }
+ send_reply(sptr, RPL_LISTEND);
+ return 0;
+ }
+
+ for (; (name = ircd_strtok(&p, parv[1], ",")); parv[1] = 0)
+ {
+ chptr = FindChannel(name);
+ if (!chptr)
+ continue;
+ if (ShowChannel(sptr, chptr)
+ || (IsAnOper(sptr) && HasPriv(sptr, PRIV_LIST_CHAN)))
+ send_reply(sptr, RPL_LIST, chptr->chname,
+ chptr->users - number_of_zombies(chptr), chptr->topic);
+ }
+
+ send_reply(sptr, RPL_LISTEND);
+ return 0;
+}
projects / ircu2.10.12-pk.git / blobdiff