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189935b1 | 1 | /* |
2 | * IRC - Internet Relay Chat, ircd/m_topic.c | |
3 | * Copyright (C) 1990 Jarkko Oikarinen and | |
4 | * University of Oulu, Computing Center | |
5 | * | |
6 | * See file AUTHORS in IRC package for additional names of | |
7 | * the programmers. | |
8 | * | |
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) | |
12 | * any later version. | |
13 | * | |
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. | |
18 | * | |
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. | |
22 | * | |
b5feb63f | 23 | * $Id: m_topic.c,v 1.21.2.1 2005/12/31 01:41:40 entrope Exp $ |
189935b1 | 24 | */ |
25 | ||
189935b1 | 26 | #include "config.h" |
27 | ||
28 | #include "channel.h" | |
29 | #include "client.h" | |
30 | #include "hash.h" | |
31 | #include "ircd.h" | |
32 | #include "ircd_features.h" | |
33 | #include "ircd_log.h" | |
34 | #include "ircd_reply.h" | |
35 | #include "ircd_string.h" | |
36 | #include "msg.h" | |
37 | #include "numeric.h" | |
38 | #include "numnicks.h" | |
39 | #include "send.h" | |
40 | ||
41 | /* #include <assert.h> -- Now using assert in ircd_log.h */ | |
42 | #include <stdlib.h> /* for atoi() */ | |
43 | ||
b5feb63f | 44 | /** Set a channel topic or report an error. |
45 | * @param[in] sptr Original topic setter. | |
46 | * @param[in] cptr Neighbor that sent the topic message. | |
47 | * @param[in] chptr Channel to set topic on. | |
48 | * @param[in] topic New topic. | |
49 | * @param[in] ts Timestamp that topic was set (0 for current time). | |
50 | */ | |
51 | static void do_settopic(struct Client *sptr, struct Client *cptr, | |
189935b1 | 52 | struct Channel *chptr, char *topic, time_t ts) |
53 | { | |
54 | struct Client *from; | |
55 | int newtopic; | |
56 | ||
57 | if (feature_bool(FEAT_HIS_BANWHO) && IsServer(sptr)) | |
58 | from = &his; | |
59 | else | |
60 | from = sptr; | |
189935b1 | 61 | /* Note if this is just a refresh of an old topic, and don't |
62 | * send it to all the clients to save bandwidth. We still send | |
63 | * it to other servers as they may have split and lost the topic. | |
64 | */ | |
65 | newtopic=ircd_strncmp(chptr->topic,topic,TOPICLEN)!=0; | |
66 | /* setting a topic */ | |
67 | ircd_strncpy(chptr->topic, topic, TOPICLEN); | |
68 | ircd_strncpy(chptr->topic_nick, cli_name(from), NICKLEN); | |
69 | chptr->topic_time = ts ? ts : TStime(); | |
70 | /* Fixed in 2.10.11: Don't propagate local topics */ | |
71 | if (!IsLocalChannel(chptr->chname)) | |
72 | sendcmdto_serv_butone(sptr, CMD_TOPIC, cptr, "%H %Tu %Tu :%s", chptr, | |
73 | chptr->creationtime, chptr->topic_time, chptr->topic); | |
74 | if (newtopic) | |
75 | sendcmdto_channel_butserv_butone(from, CMD_TOPIC, chptr, NULL, 0, | |
76 | "%H :%s", chptr, chptr->topic); | |
77 | /* if this is the same topic as before we send it to the person that | |
78 | * set it (so they knew it went through ok), but don't bother sending | |
79 | * it to everyone else on the channel to save bandwidth | |
80 | */ | |
81 | else if (MyUser(sptr)) | |
b5feb63f | 82 | sendcmdto_one(sptr, CMD_TOPIC, sptr, "%H :%s", chptr, chptr->topic); |
189935b1 | 83 | } |
84 | ||
b5feb63f | 85 | /** Handle a local user's attempt to get or set a channel topic. |
86 | * | |
87 | * \a parv has the following elements: | |
88 | * \li \a parv[1] is the channel name | |
89 | * \li \a parv[\a parc - 1] is the topic (if \a parc > 2) | |
189935b1 | 90 | * |
b5feb63f | 91 | * See @ref m_functions for discussion of the arguments. |
92 | * @param[in] cptr Client that sent us the message. | |
93 | * @param[in] sptr Original source of message. | |
94 | * @param[in] parc Number of arguments. | |
95 | * @param[in] parv Argument vector. | |
189935b1 | 96 | */ |
97 | int m_topic(struct Client* cptr, struct Client* sptr, int parc, char* parv[]) | |
98 | { | |
99 | struct Channel *chptr; | |
100 | char *topic = 0, *name, *p = 0; | |
101 | ||
102 | if (parc < 2) | |
103 | return need_more_params(sptr, "TOPIC"); | |
104 | ||
105 | if (parc > 2) | |
106 | topic = parv[parc - 1]; | |
107 | ||
108 | for (; (name = ircd_strtok(&p, parv[1], ",")); parv[1] = 0) | |
109 | { | |
110 | chptr = 0; | |
111 | /* Does the channel exist */ | |
112 | if (!IsChannelName(name) || !(chptr = FindChannel(name))) | |
113 | { | |
114 | send_reply(sptr,ERR_NOSUCHCHANNEL,name); | |
115 | continue; | |
116 | } | |
117 | /* Trying to check a topic outside a secret channel */ | |
118 | if ((topic || SecretChannel(chptr)) && !find_channel_member(sptr, chptr)) | |
119 | { | |
120 | send_reply(sptr, ERR_NOTONCHANNEL, chptr->chname); | |
121 | continue; | |
122 | } | |
123 | ||
124 | /* only asking for topic */ | |
125 | if (!topic) | |
126 | { | |
127 | if (chptr->topic[0] == '\0') | |
128 | send_reply(sptr, RPL_NOTOPIC, chptr->chname); | |
129 | else | |
130 | { | |
131 | send_reply(sptr, RPL_TOPIC, chptr->chname, chptr->topic); | |
132 | send_reply(sptr, RPL_TOPICWHOTIME, chptr->chname, chptr->topic_nick, | |
133 | chptr->topic_time); | |
134 | } | |
135 | } | |
b5feb63f | 136 | else if ((chptr->mode.mode & MODE_TOPICLIMIT) && !is_chan_op(sptr, chptr)) |
137 | send_reply(sptr, ERR_CHANOPRIVSNEEDED, chptr->chname); | |
138 | else if (!client_can_send_to_channel(sptr, chptr, 1)) | |
139 | send_reply(sptr, ERR_CANNOTSENDTOCHAN, chptr->chname); | |
140 | else | |
189935b1 | 141 | do_settopic(sptr,cptr,chptr,topic,0); |
142 | } | |
143 | return 0; | |
144 | } | |
145 | ||
b5feb63f | 146 | /** Handle a remote user's attempt to set a channel topic. |
147 | * \a parv has the following elements: | |
148 | * \li \a parv[1] is the channel name | |
149 | * \li \a parv[2] is the channel creation timestamp (optional) | |
150 | * \li \a parv[2] is the topic's timestamp (optional) | |
151 | * \li \a parv[\a parc - 1] is the topic | |
152 | * | |
153 | * See @ref m_functions for discussion of the arguments. | |
154 | * @param[in] cptr Client that sent us the message. | |
155 | * @param[in] sptr Original source of message. | |
156 | * @param[in] parc Number of arguments. | |
157 | * @param[in] parv Argument vector. | |
189935b1 | 158 | */ |
159 | int ms_topic(struct Client* cptr, struct Client* sptr, int parc, char* parv[]) | |
160 | { | |
161 | struct Channel *chptr; | |
162 | char *topic = 0, *name, *p = 0; | |
163 | time_t ts = 0; | |
164 | ||
165 | if (parc < 3) | |
166 | return need_more_params(sptr, "TOPIC"); | |
167 | ||
168 | topic = parv[parc - 1]; | |
169 | ||
170 | for (; (name = ircd_strtok(&p, parv[1], ",")); parv[1] = 0) | |
171 | { | |
172 | chptr = 0; | |
173 | /* Does the channel exist */ | |
174 | if (!IsChannelName(name) || !(chptr = FindChannel(name))) | |
175 | { | |
176 | send_reply(sptr,ERR_NOSUCHCHANNEL,name); | |
177 | continue; | |
178 | } | |
179 | ||
180 | /* Ignore requests for topics from remote servers */ | |
181 | if (IsLocalChannel(name) && !MyUser(sptr)) | |
182 | { | |
183 | protocol_violation(sptr,"Topic request"); | |
184 | continue; | |
185 | } | |
186 | ||
187 | /* If existing channel is older or has newer topic, ignore */ | |
188 | if (parc > 3 && (ts = atoi(parv[2])) && chptr->creationtime < ts) | |
189 | continue; | |
190 | ||
191 | if (parc > 4 && (ts = atoi(parv[3])) && chptr->topic_time > ts) | |
192 | continue; | |
193 | ||
194 | do_settopic(sptr,cptr,chptr,topic, ts); | |
195 | } | |
196 | return 0; | |
197 | } |