2 * IRC - Internet Relay Chat, ircd/s_user.c (formerly ircd/s_msg.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.
24 * @brief Support functions for /WHO-like commands.
34 #include "ircd_chattr.h"
35 #include "ircd_features.h"
36 #include "ircd_reply.h"
37 #include "ircd_snprintf.h"
38 #include "ircd_string.h"
43 #include "querycmds.h"
57 #include <arpa/inet.h> /* inet_ntoa */
65 /** Send a WHO reply to a client who asked.
66 * @param[in] sptr Client who is searching for other users.
67 * @param[in] acptr Client who may be shown to \a sptr.
68 * @param[in] repchan Shared channel that provides visibility.
69 * @param[in] fields Bitmask of WHO_FIELD_* values, indicating what to show.
70 * @param[in] qrt Query type string (ignored unless \a fields & WHO_FIELD_QTY).
72 void do_who(struct Client* sptr, struct Client* acptr, struct Channel* repchan,
73 int fields, char* qrt)
76 struct Channel *chptr = repchan;
78 static char buf1[512];
79 /* NOTE: with current fields list and sizes this _cannot_ overrun,
80 and also the message finally sent shouldn't ever be truncated */
85 /* If we don't have a channel and we need one... try to find it,
86 unless the listing is for a channel service, we already know
87 that there are no common channels, thus use PubChannel and not
89 if (!chptr && (!fields || (fields & (WHO_FIELD_CHA | WHO_FIELD_FLA))) &&
90 !IsChannelService(acptr))
92 struct Membership* chan;
93 for (chan = cli_user(acptr)->channel; chan && !chptr; chan = chan->next_channel)
94 if (PubChannel(chan->channel) &&
95 (acptr == sptr || !IsZombie(chan)))
96 chptr = chan->channel;
99 /* Place the fields one by one in the buffer and send it
100 note that fields == NULL means "default query" */
102 if (fields & WHO_FIELD_QTY) /* Query type */
108 while ((*qrt) && (*(p1++) = *(qrt++)));
111 if (!fields || (fields & WHO_FIELD_CHA))
115 if ((p2 = (chptr ? chptr->chname : NULL)))
116 while ((*p2) && (*(p1++) = *(p2++)));
121 if (!fields || (fields & WHO_FIELD_UID))
123 char *p2 = cli_user(acptr)->username;
125 while ((*p2) && (*(p1++) = *(p2++)));
128 if (fields & WHO_FIELD_NIP)
130 const char* p2 = HasHiddenHost(acptr) && !IsAnOper(sptr) ?
131 feature_str(FEAT_HIDDEN_IP) :
132 ircd_ntoa(&cli_ip(acptr));
134 while ((*p2) && (*(p1++) = *(p2++)));
137 if (!fields || (fields & WHO_FIELD_HOS))
139 char *p2 = cli_user(acptr)->host;
141 while ((*p2) && (*(p1++) = *(p2++)));
144 if (!fields || (fields & WHO_FIELD_SER))
146 const char *p2 = (feature_bool(FEAT_HIS_WHO_SERVERNAME) && !IsAnOper(sptr)) ?
147 feature_str(FEAT_HIS_SERVERNAME) :
148 cli_name(cli_user(acptr)->server);
150 while ((*p2) && (*(p1++) = *(p2++)));
153 if (!fields || (fields & WHO_FIELD_NIC))
155 char *p2 = cli_name(acptr);
157 while ((*p2) && (*(p1++) = *(p2++)));
160 if (!fields || (fields & WHO_FIELD_FLA))
163 if (cli_user(acptr)->away)
167 if SeeOper(sptr,acptr)
170 /* If you specified flags then we assume you know how to parse
171 * multiple channel status flags, as this is currently the only
172 * way to know if someone has @'s *and* is +'d.
174 if (chptr && is_chan_op(acptr, chptr))
176 if (chptr && has_voice(acptr, chptr))
178 if (chptr && is_zombie(acptr, chptr))
182 if (chptr && is_chan_op(acptr, chptr))
184 else if (chptr && has_voice(acptr, chptr))
186 else if (chptr && is_zombie(acptr, chptr))
193 if (IsInvisible(acptr))
195 if (SendWallops(acptr))
197 if (SendDebug(acptr))
200 if (HasHiddenHost(acptr))
204 if (!fields || (fields & WHO_FIELD_DIS))
208 *p1++ = ':'; /* Place colon here for default reply */
209 if (feature_bool(FEAT_HIS_WHO_HOPCOUNT) && !IsAnOper(sptr))
210 *p1++ = (sptr == acptr) ? '0' : '3';
212 /* three digit hopcount maximum */
213 p1 += ircd_snprintf(0, p1, 3, "%d", cli_hopcount(acptr));
216 if (fields & WHO_FIELD_IDL)
220 (IsAnOper(sptr) || !feature_bool(FEAT_HIS_WHO_SERVERNAME) ||
222 p1 += ircd_snprintf(0, p1, 11, "%d",
223 CurrentTime - cli_user(acptr)->last);
228 if (fields & WHO_FIELD_ACC)
230 char *p2 = cli_user(acptr)->account;
233 while ((*p2) && (*(p1++) = *(p2++)));
238 if (!fields || (fields & WHO_FIELD_REN))
240 char *p2 = cli_info(acptr);
243 *p1++ = ':'; /* Place colon here for special reply */
244 while ((*p2) && (*(p1++) = *(p2++)));
247 /* The first char will always be an useless blank and we
248 need to terminate buf1 */
251 send_reply(sptr, fields ? RPL_WHOSPCRPL : RPL_WHOREPLY, ++p1);
254 /** Count number of users who match \a mask.
255 * @param[in] mask user\@host or user\@ip mask to check.
256 * @return Count of matching users.
259 count_users(char *mask)
261 struct Client *acptr;
263 char namebuf[USERLEN + HOSTLEN + 2];
264 char ipbuf[USERLEN + 16 + 2];
266 for (acptr = GlobalClientList; acptr; acptr = cli_next(acptr)) {
270 ircd_snprintf(0, namebuf, sizeof(namebuf), "%s@%s",
271 cli_user(acptr)->username, cli_user(acptr)->host);
272 ircd_snprintf(0, ipbuf, sizeof(ipbuf), "%s@%s", cli_user(acptr)->username,
273 ircd_ntoa(&cli_ip(acptr)));
275 if (!match(mask, namebuf) || !match(mask, ipbuf))