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189935b1 | 1 | /* |
2 | * IRC - Internet Relay Chat, ircd/m_version.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_version.c,v 1.16 2004/12/11 05:14:03 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 "hash.h" | |
86 | #include "ircd.h" | |
87 | #include "ircd_features.h" | |
88 | #include "ircd_log.h" | |
89 | #include "ircd_reply.h" | |
90 | #include "ircd_snprintf.h" | |
91 | #include "ircd_string.h" | |
92 | #include "msg.h" | |
93 | #include "numeric.h" | |
94 | #include "numnicks.h" | |
95 | #include "s_debug.h" | |
96 | #include "s_user.h" | |
97 | #include "send.h" | |
98 | #include "supported.h" | |
99 | #include "version.h" | |
100 | ||
101 | /* #include <assert.h> -- Now using assert in ircd_log.h */ | |
102 | ||
103 | /* | |
104 | * m_version - generic message handler | |
105 | * | |
106 | * parv[0] = sender prefix | |
107 | * parv[1] = servername | |
108 | */ | |
109 | int m_version(struct Client* cptr, struct Client* sptr, int parc, char* parv[]) | |
110 | { | |
111 | struct Client *acptr; | |
112 | if (parc > 1 && (!(acptr = find_match_server(parv[1])) || !IsMe(acptr))) | |
113 | send_reply(sptr, ERR_NOPRIVILEGES); | |
114 | else | |
115 | { | |
116 | send_reply(sptr, RPL_VERSION, version, debugmode, cli_name(&me), | |
117 | debug_serveropts()); | |
118 | send_supported(sptr); | |
119 | } | |
120 | return 0; | |
121 | } | |
122 | ||
123 | /* | |
124 | * mo_version - oper message handler | |
125 | * | |
126 | * parv[0] = sender prefix | |
127 | * parv[1] = servername | |
128 | */ | |
129 | int mo_version(struct Client* cptr, struct Client* sptr, int parc, char* parv[]) | |
130 | { | |
131 | struct Client *acptr; | |
132 | ||
133 | if (MyConnect(sptr) && parc > 1) | |
134 | { | |
135 | if (!(acptr = find_match_server(parv[1]))) | |
136 | { | |
137 | send_reply(sptr, ERR_NOSUCHSERVER, parv[1]); | |
138 | return 0; | |
139 | } | |
140 | parv[1] = cli_name(acptr); | |
141 | } | |
142 | ||
143 | if (hunt_server_cmd(sptr, CMD_VERSION, cptr, feature_int(FEAT_HIS_REMOTE), | |
144 | ":%C", 1, | |
145 | parc, parv) | |
146 | == HUNTED_ISME) | |
147 | { | |
148 | send_reply(sptr, RPL_VERSION, version, debugmode, cli_name(&me), | |
149 | debug_serveropts()); | |
150 | send_supported(sptr); | |
151 | } | |
152 | ||
153 | return 0; | |
154 | } | |
155 | ||
156 | /* | |
157 | * ms_version - server message handler | |
158 | * | |
159 | * parv[0] = sender prefix | |
160 | * parv[1] = servername | |
161 | */ | |
162 | int ms_version(struct Client* cptr, struct Client* sptr, int parc, char* parv[]) | |
163 | { | |
164 | struct Client *acptr; | |
165 | ||
166 | if (MyConnect(sptr) && parc > 1) | |
167 | { | |
168 | if (!(acptr = find_match_server(parv[1]))) | |
169 | { | |
170 | send_reply(sptr, ERR_NOSUCHSERVER, parv[1]); | |
171 | return 0; | |
172 | } | |
173 | parv[1] = cli_name(acptr); | |
174 | } | |
175 | ||
176 | if (hunt_server_cmd(sptr, CMD_VERSION, cptr, 0, ":%C", 1, parc, parv) == | |
177 | HUNTED_ISME) | |
178 | { | |
179 | send_reply(sptr, RPL_VERSION, version, debugmode, cli_name(&me), | |
180 | debug_serveropts()); | |
181 | } | |
182 | ||
183 | return 0; | |
184 | } |