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189935b1 | 1 | /* |
2 | * IRC - Internet Relay Chat, ircd/m_rpong.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_rpong.c,v 1.12 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 "hash.h" | |
86 | #include "ircd.h" | |
87 | #include "ircd_log.h" | |
88 | #include "ircd_reply.h" | |
89 | #include "ircd_string.h" | |
90 | #include "msg.h" | |
91 | #include "numeric.h" | |
92 | #include "numnicks.h" | |
93 | #include "opercmds.h" | |
94 | #include "send.h" | |
95 | ||
96 | /* #include <assert.h> -- Now using assert in ircd_log.h */ | |
97 | ||
98 | /* | |
99 | * ms_rpong - server message handler | |
100 | * -- by Run too :) | |
101 | * | |
102 | * parv[0] = sender prefix | |
103 | * parv[1] = from pinged server: start server; from start server: sender | |
104 | * parv[2] = from pinged server: sender; from start server: pinged server | |
105 | * parv[3] = pingtime in ms | |
106 | * parv[4] = client info (for instance start time) | |
107 | */ | |
108 | int ms_rpong(struct Client* cptr, struct Client* sptr, int parc, char* parv[]) | |
109 | { | |
110 | struct Client *acptr; | |
111 | ||
112 | if (!IsServer(sptr)) | |
113 | return 0; | |
114 | ||
115 | if (parc < 5) { | |
116 | /* | |
117 | * PROTOCOL ERROR | |
118 | */ | |
119 | return need_more_params(sptr, "RPONG"); | |
120 | } | |
121 | if (parc == 6) { | |
122 | /* | |
123 | * from pinged server to source server | |
124 | */ | |
125 | if (!(acptr = FindServer(parv[1])) && !(acptr = FindNServer(parv[1]))) | |
126 | return 0; | |
127 | ||
128 | if (IsMe(acptr)) { | |
129 | if (!(acptr = findNUser(parv[2]))) | |
130 | return 0; | |
131 | ||
132 | sendcmdto_one(&me, CMD_RPONG, acptr, "%C %s %s :%s", acptr, cli_name(sptr), | |
133 | militime(parv[3], parv[4]), parv[5]); | |
134 | } else | |
135 | sendcmdto_one(sptr, CMD_RPONG, acptr, "%s %s %s %s :%s", parv[1], | |
136 | parv[2], parv[3], parv[4], parv[5]); | |
137 | } else { | |
138 | /* | |
139 | * returned from source server to client | |
140 | */ | |
141 | if (!(acptr = findNUser(parv[1]))) | |
142 | return 0; | |
143 | ||
144 | sendcmdto_one(sptr, CMD_RPONG, acptr, "%C %s %s :%s", acptr, parv[2], | |
145 | parv[3], parv[4]); | |
146 | } | |
147 | return 0; | |
148 | } |