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1 | /* | |
2 | * IRC - Internet Relay Chat, ircd/m_privmsg.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 | * | |
23 | * $Id: m_privmsg.c,v 1.11 2004/12/11 05:13:48 klmitch Exp $ | |
24 | */ | |
25 | ||
26 | /* | |
27 | * m_functions execute protocol messages on this server: | |
28 | * | |
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...). | |
34 | * | |
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. | |
38 | * | |
39 | * (!IsServer(cptr)) => (cptr == sptr), because | |
40 | * prefixes are taken *only* from servers... | |
41 | * | |
42 | * (IsServer(cptr)) | |
43 | * (sptr == cptr) => the message didn't | |
44 | * have the prefix. | |
45 | * | |
46 | * (sptr != cptr && IsServer(sptr) means | |
47 | * the prefix specified servername. (?) | |
48 | * | |
49 | * (sptr != cptr && !IsServer(sptr) means | |
50 | * that message originated from a remote | |
51 | * user (not local). | |
52 | * | |
53 | * combining | |
54 | * | |
55 | * (!IsServer(sptr)) means that, sptr can safely | |
56 | * taken as defining the target structure of the | |
57 | * message in this server. | |
58 | * | |
59 | * *Always* true (if 'parse' and others are working correct): | |
60 | * | |
61 | * 1) sptr->from == cptr (note: cptr->from == cptr) | |
62 | * | |
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 ] | |
67 | * | |
68 | * parc number of variable parameter strings (if zero, | |
69 | * parv is allowed to be NULL) | |
70 | * | |
71 | * parv a NULL terminated list of parameter pointers, | |
72 | * | |
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* | |
78 | * | |
79 | * note: it is guaranteed that parv[0]..parv[parc-1] are all | |
80 | * non-NULL pointers. | |
81 | */ | |
82 | #include "config.h" | |
83 | ||
84 | #include "client.h" | |
85 | #include "ircd.h" | |
86 | #include "ircd_chattr.h" | |
87 | #include "ircd_features.h" | |
88 | #include "ircd_log.h" | |
89 | #include "ircd_relay.h" | |
90 | #include "ircd_reply.h" | |
91 | #include "ircd_string.h" | |
92 | #include "match.h" | |
93 | #include "msg.h" | |
94 | #include "numeric.h" | |
95 | #include "send.h" | |
96 | ||
97 | /* #include <assert.h> -- Now using assert in ircd_log.h */ | |
98 | #include <string.h> | |
99 | ||
100 | /* | |
101 | * m_privmsg - generic message handler | |
102 | */ | |
103 | int m_privmsg(struct Client* cptr, struct Client* sptr, int parc, char* parv[]) | |
104 | { | |
105 | char* name; | |
106 | char* server; | |
107 | int i; | |
108 | int count; | |
109 | char* vector[MAXTARGETS]; | |
110 | ||
111 | assert(0 != cptr); | |
112 | assert(cptr == sptr); | |
113 | assert(0 != cli_user(sptr)); | |
114 | ||
115 | ClrFlag(sptr, FLAG_TS8); | |
116 | ||
117 | if (feature_bool(FEAT_IDLE_FROM_MSG)) | |
118 | cli_user(sptr)->last = CurrentTime; | |
119 | ||
120 | if (parc < 2 || EmptyString(parv[1])) | |
121 | return send_reply(sptr, ERR_NORECIPIENT, MSG_PRIVATE); | |
122 | ||
123 | if (parc < 3 || EmptyString(parv[parc - 1])) | |
124 | return send_reply(sptr, ERR_NOTEXTTOSEND); | |
125 | ||
126 | count = unique_name_vector(parv[1], ',', vector, MAXTARGETS); | |
127 | ||
128 | for (i = 0; i < count; ++i) { | |
129 | name = vector[i]; | |
130 | /* | |
131 | * channel msg? | |
132 | */ | |
133 | if (IsChannelPrefix(*name)) { | |
134 | relay_channel_message(sptr, name, parv[parc - 1]); | |
135 | } | |
136 | /* | |
137 | * we have to check for the '@' at least once no matter what we do | |
138 | * handle it first so we don't have to do it twice | |
139 | */ | |
140 | else if ((server = strchr(name, '@'))) | |
141 | relay_directed_message(sptr, name, server, parv[parc - 1]); | |
142 | else | |
143 | relay_private_message(sptr, name, parv[parc - 1]); | |
144 | } | |
145 | return 0; | |
146 | } | |
147 | ||
148 | /* | |
149 | * ms_privmsg - server message handler | |
150 | */ | |
151 | int ms_privmsg(struct Client* cptr, struct Client* sptr, int parc, char* parv[]) | |
152 | { | |
153 | char* name; | |
154 | char* server; | |
155 | ||
156 | ClrFlag(sptr, FLAG_TS8); | |
157 | ||
158 | if (parc < 3) { | |
159 | /* | |
160 | * we can't deliver it, sending an error back is pointless | |
161 | */ | |
162 | return 0; | |
163 | } | |
164 | name = parv[1]; | |
165 | /* | |
166 | * channel msg? | |
167 | */ | |
168 | if (IsChannelPrefix(*name)) { | |
169 | server_relay_channel_message(sptr, name, parv[parc - 1]); | |
170 | } | |
171 | /* | |
172 | * coming from another server, we have to check this here | |
173 | */ | |
174 | else if ('$' == *name && IsOper(sptr)) { | |
175 | server_relay_masked_message(sptr, name, parv[parc - 1]); | |
176 | } | |
177 | else if ((server = strchr(name, '@'))) { | |
178 | /* | |
179 | * XXX - can't get away with not doing everything | |
180 | * relay_directed_message has to do | |
181 | */ | |
182 | relay_directed_message(sptr, name, server, parv[parc - 1]); | |
183 | } | |
184 | else { | |
185 | server_relay_private_message(sptr, name, parv[parc - 1]); | |
186 | } | |
187 | return 0; | |
188 | } | |
189 | ||
190 | ||
191 | /* | |
192 | * mo_privmsg - oper message handler | |
193 | */ | |
194 | int mo_privmsg(struct Client* cptr, struct Client* sptr, int parc, char* parv[]) | |
195 | { | |
196 | char* name; | |
197 | char* server; | |
198 | int i; | |
199 | int count; | |
200 | char* vector[MAXTARGETS]; | |
201 | assert(0 != cptr); | |
202 | assert(cptr == sptr); | |
203 | assert(0 != cli_user(sptr)); | |
204 | ||
205 | ClrFlag(sptr, FLAG_TS8); | |
206 | ||
207 | if (feature_bool(FEAT_IDLE_FROM_MSG)) | |
208 | cli_user(sptr)->last = CurrentTime; | |
209 | ||
210 | if (parc < 2 || EmptyString(parv[1])) | |
211 | return send_reply(sptr, ERR_NORECIPIENT, MSG_PRIVATE); | |
212 | ||
213 | if (parc < 3 || EmptyString(parv[parc - 1])) | |
214 | return send_reply(sptr, ERR_NOTEXTTOSEND); | |
215 | ||
216 | count = unique_name_vector(parv[1], ',', vector, MAXTARGETS); | |
217 | ||
218 | for (i = 0; i < count; ++i) { | |
219 | name = vector[i]; | |
220 | /* | |
221 | * channel msg? | |
222 | */ | |
223 | if (IsChannelPrefix(*name)) | |
224 | relay_channel_message(sptr, name, parv[parc - 1]); | |
225 | ||
226 | else if (*name == '$') | |
227 | relay_masked_message(sptr, name, parv[parc - 1]); | |
228 | ||
229 | else if ((server = strchr(name, '@'))) | |
230 | relay_directed_message(sptr, name, server, parv[parc - 1]); | |
231 | ||
232 | else | |
233 | relay_private_message(sptr, name, parv[parc - 1]); | |
234 | } | |
235 | return 0; | |
236 | } |