/[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 269 - (show annotations)
Mon Nov 14 19:39:09 2005 UTC (13 years, 11 months ago) by adx
File MIME type: text/x-chdr
File size: 5867 byte(s)
+ more rate limiting fixes
+ update RELNOTES

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 ID_or_name(source_p, source_p->from), "*");
143 }
144 }
145
146 /*
147 * m_links - LINKS message handler
148 * parv[0] = sender prefix
149 * parv[1] = servername mask
150 * or
151 * parv[0] = sender prefix
152 * parv[1] = server to query
153 * parv[2] = servername mask
154 */
155 static void
156 m_links(struct Client *client_p, struct Client *source_p,
157 int parc, char *parv[])
158 {
159 static time_t last_used = 0;
160
161 if ((last_used + ConfigFileEntry.pace_wait) > CurrentTime)
162 {
163 sendto_one(source_p, form_str(RPL_LOAD2HI),
164 me.name, source_p->name);
165 return;
166 }
167 else
168 last_used = CurrentTime;
169
170 if (!ConfigServerHide.flatten_links)
171 {
172 mo_links(client_p, source_p, parc, parv);
173 return;
174 }
175
176 #ifdef STATIC_MODULES
177 do_links(source_p, parc, parv);
178 #else
179 execute_callback(links_cb, source_p, parc, parv);
180 #endif
181 }
182
183 static void
184 mo_links(struct Client *client_p, struct Client *source_p,
185 int parc, char *parv[])
186 {
187 if (parc > 2)
188 if (!ConfigFileEntry.disable_remote || IsOper(source_p))
189 {
190 if (hunt_server(client_p, source_p, ":%s LINKS %s :%s", 1, parc, parv)
191 != HUNTED_ISME)
192 return;
193 }
194
195 #ifdef STATIC_MODULES
196 do_links(source_p, parc, parv);
197 #else
198 execute_callback(links_cb, source_p, parc, parv);
199 #endif
200 }
201
202 /*
203 * ms_links - LINKS message handler
204 * parv[0] = sender prefix
205 * parv[1] = servername mask
206 * or
207 * parv[0] = sender prefix
208 * parv[1] = server to query
209 * parv[2] = servername mask
210 */
211 static void
212 ms_links(struct Client *client_p, struct Client *source_p,
213 int parc, char *parv[])
214 {
215 if (hunt_server(client_p, source_p, ":%s LINKS %s :%s", 1, parc, parv)
216 != HUNTED_ISME)
217 return;
218
219 if (IsClient(source_p))
220 m_links(client_p, source_p, parc, parv);
221 }

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