/[svn]/ircd-hybrid-7.2/modules/m_links.c
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Contents of /ircd-hybrid-7.2/modules/m_links.c

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Revision 34 - (show annotations)
Sun Oct 2 21:05:51 2005 UTC (15 years, 7 months ago) by lusky
File MIME type: text/x-chdr
File size: 5575 byte(s)
create 7.2 branch, we can move/rename it as needed.


1 /*
2 * ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3 * m_links.c: Shows what servers are currently connected.
4 *
5 * Copyright (C) 2002 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 "irc_string.h"
29 #include "ircd.h"
30 #include "numeric.h"
31 #include "s_serv.h"
32 #include "send.h"
33 #include "s_conf.h"
34 #include "msg.h"
35 #include "motd.h"
36 #include "parse.h"
37 #include "modules.h"
38 #include "hook.h"
39
40 static void do_links(struct Client *, int, char **);
41 static void m_links(struct Client*, struct Client*, int, char**);
42 static void mo_links(struct Client*, struct Client*, int, char**);
43 static void ms_links(struct Client*, struct Client*, int, char**);
44
45 struct Message links_msgtab = {
46 "LINKS", 0, 0, 0, 0, MFLG_SLOW, 0,
47 {m_unregistered, m_links, ms_links, m_ignore, mo_links, m_ignore}
48 };
49
50 #ifndef STATIC_MODULES
51 const char *_version = "$Revision$";
52 static struct Callback *links_cb;
53
54 static void *
55 va_links(va_list args)
56 {
57 struct Client *source_p = va_arg(args, struct Client *);
58 int parc = va_arg(args, int);
59 char **parv = va_arg(args, char **);
60
61 do_links(source_p, parc, parv);
62 return NULL;
63 }
64
65 void
66 _modinit(void)
67 {
68 links_cb = register_callback("doing_links", va_links);
69 mod_add_cmd(&links_msgtab);
70 }
71
72 void
73 _moddeinit(void)
74 {
75 mod_del_cmd(&links_msgtab);
76 uninstall_hook(links_cb, va_links);
77 }
78
79 #endif
80
81 static void
82 do_links(struct Client *source_p, int parc, char **parv)
83 {
84 if (IsOper(source_p) || !ConfigServerHide.flatten_links)
85 {
86 char *mask = (parc > 2 ? parv[2] : parv[1]);
87 const char *me_name, *nick, *p;
88 struct Client *target_p;
89 char clean_mask[2 * HOSTLEN + 4];
90 dlink_node *ptr;
91
92 if (mask == NULL)
93 mask = "";
94 if (*mask) /* only necessary if there is a mask */
95 mask = collapse(clean_string(clean_mask, (const unsigned char*) mask, 2 * HOSTLEN));
96
97 me_name = ID_or_name(&me, source_p->from);
98 nick = ID_or_name(source_p, source_p->from);
99
100 DLINK_FOREACH(ptr, global_serv_list.head)
101 {
102 target_p = ptr->data;
103
104 if (*mask && !match(mask, target_p->name))
105 continue;
106
107 if (target_p->info[0])
108 {
109 if ((p = strchr(target_p->info, ']')))
110 p += 2; /* skip the nasty [IP] part */
111 else
112 p = target_p->info;
113 }
114 else
115 p = "(Unknown Location)";
116
117 /* We just send the reply, as if they are here there's either no SHIDE,
118 * or they're an oper..
119 */
120 sendto_one(source_p, form_str(RPL_LINKS),
121 me_name, nick,
122 target_p->name, target_p->servptr->name,
123 target_p->hopcount, p);
124 }
125
126 sendto_one(source_p, form_str(RPL_ENDOFLINKS),
127 me_name, nick,
128 EmptyString(mask) ? "*" : mask);
129 }
130 else {
131 /*
132 * Print our own info so at least it looks like a normal links
133 * then print out the file (which may or may not be empty)
134 */
135 sendto_one(source_p, form_str(RPL_LINKS),
136 ID_or_name(&me, source_p->from),
137 ID_or_name(source_p, source_p->from),
138 me.name, me.name, 0, me.info);
139 send_message_file(source_p, &ConfigFileEntry.linksfile);
140 sendto_one(source_p, form_str(RPL_ENDOFLINKS),
141 ID_or_name(&me, source_p->from), "*");
142 }
143 }
144
145 /*
146 * m_links - LINKS message handler
147 * parv[0] = sender prefix
148 * parv[1] = servername mask
149 * or
150 * parv[0] = sender prefix
151 * parv[1] = server to query
152 * parv[2] = servername mask
153 */
154 static void
155 m_links(struct Client *client_p, struct Client *source_p,
156 int parc, char *parv[])
157 {
158 if (!ConfigServerHide.flatten_links)
159 {
160 mo_links(client_p, source_p, parc, parv);
161 return;
162 }
163
164 #ifdef STATIC_MODULES
165 do_links(source_p, parc, parv);
166 #else
167 execute_callback(links_cb, source_p, parc, parv);
168 #endif
169 }
170
171 static void
172 mo_links(struct Client *client_p, struct Client *source_p,
173 int parc, char *parv[])
174 {
175 if (parc > 2)
176 if (!ConfigFileEntry.disable_remote || IsOper(source_p))
177 {
178 if (hunt_server(client_p, source_p, ":%s LINKS %s :%s", 1, parc, parv)
179 != HUNTED_ISME)
180 return;
181 }
182
183 #ifdef STATIC_MODULES
184 do_links(source_p, parc, parv);
185 #else
186 execute_callback(links_cb, source_p, parc, parv);
187 #endif
188 }
189
190 /*
191 * ms_links - LINKS message handler
192 * parv[0] = sender prefix
193 * parv[1] = servername mask
194 * or
195 * parv[0] = sender prefix
196 * parv[1] = server to query
197 * parv[2] = servername mask
198 */
199 static void
200 ms_links(struct Client *client_p, struct Client *source_p,
201 int parc, char *parv[])
202 {
203 if (hunt_server(client_p, source_p, ":%s LINKS %s :%s", 1, parc, parv)
204 != HUNTED_ISME)
205 return;
206
207 if (IsClient(source_p))
208 m_links(client_p, source_p, parc, parv);
209 }

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