/[svn]/ircd-hybrid-8/modules/m_encap.c
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Contents of /ircd-hybrid-8/modules/m_encap.c

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Revision 1233 - (show annotations)
Thu Sep 22 20:53:07 2011 UTC (8 years, 6 months ago) by michael
File MIME type: text/x-chdr
File size: 3621 byte(s)
- replace bunch of ircsprintf with snprintf

1 /*
2 * ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3 * m_encap.c: encapsulated command propagation and parsing
4 *
5 * Copyright (C) 2003 by the past and present ircd coders, and others.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20 * USA
21 *
22 * $Id$
23 */
24
25 #include "stdinc.h"
26 #include "handlers.h"
27 #include "client.h"
28 #include "msg.h"
29 #include "parse.h"
30 #include "sprintf_irc.h"
31 #include "s_serv.h"
32 #include "send.h"
33 #include "modules.h"
34 #include "irc_string.h"
35
36
37 /*
38 * ms_encap()
39 *
40 * inputs - destination server, subcommand, parameters
41 * output - none
42 * side effects - propagates subcommand to locally connected servers
43 */
44 static void
45 ms_encap(struct Client *client_p, struct Client *source_p,
46 int parc, char *parv[])
47 {
48 char buffer[IRCD_BUFSIZE], *ptr = buffer;
49 unsigned int cur_len = 0, len, i;
50 int paramcount, mpara = 0;
51 struct Message *mptr = NULL;
52 MessageHandler handler = 0;
53
54 for (i = 1; i < (unsigned int)parc - 1; i++)
55 {
56 len = strlen(parv[i]) + 1;
57
58 if ((cur_len + len) >= sizeof(buffer))
59 return;
60
61 snprintf(ptr, sizeof(buffer) - cur_len, "%s ", parv[i]);
62 cur_len += len;
63 ptr += len;
64 }
65
66 len = strlen(parv[i]);
67
68 /*
69 * if the final parameter crosses our buffer size, should we bail,
70 * like the rest, or should we truncate? ratbox seems to think truncate,
71 * so i'll do that for now until i can talk to lee. -bill
72 */
73
74 if (parc == 3)
75 snprintf(ptr, sizeof(buffer) - cur_len, "%s", parv[2]);
76 else
77 snprintf(ptr, sizeof(buffer) - cur_len, ":%s", parv[parc - 1]);
78
79 if ((cur_len + len) >= sizeof(buffer))
80 buffer[sizeof(buffer) - 1] = '\0';
81
82 sendto_match_servs(source_p, parv[1], CAP_ENCAP,
83 "ENCAP %s", buffer);
84
85 if (!match(parv[1], me.name))
86 return;
87
88 if ((mptr = find_command(parv[2])) == NULL)
89 return;
90
91 #ifdef NOT_USED_YET
92 paramcount = mptr->parameters;
93 mpara = mptr->maxpara;
94 #endif
95 mptr->bytes += strlen(buffer);
96
97 /*
98 * yes this is an ugly hack, but it is quicker than copying the entire array again
99 * note: this hack wouldnt be needed if parv[0] were set to the command name, rather
100 * than being derived from the prefix, as it should have been from the beginning.
101 */
102 ptr = parv[0];
103 parv += 2;
104 parc -= 2;
105 parv[0] = ptr;
106
107 if ((handler = mptr->handlers[ENCAP_HANDLER]))
108 (*handler)(client_p, source_p, parc, parv);
109 }
110
111 static struct Message encap_msgtab = {
112 "ENCAP", 0, 0, 3, MAXPARA, MFLG_SLOW, 0,
113 {m_ignore, m_ignore, ms_encap, m_ignore, m_ignore, m_ignore}
114 };
115
116 static void
117 module_init(void)
118 {
119 mod_add_cmd(&encap_msgtab);
120 add_capability("ENCAP", CAP_ENCAP, 1);
121 }
122
123 static void
124 module_exit(void)
125 {
126 mod_del_cmd(&encap_msgtab);
127 delete_capability("ENCAP");
128 }
129
130 struct module module_entry = {
131 .node = { NULL, NULL, NULL },
132 .name = NULL,
133 .version = "$Revision$",
134 .handle = NULL,
135 .modinit = module_init,
136 .modexit = module_exit,
137 .flags = 0
138 };

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