]>
Commit | Line | Data |
---|---|---|
4f2685f3 JT |
1 | /* |
2 | * charybdis: an advanced Internet Relay Chat Daemon(ircd). | |
3 | * tgchange.c - code for restricting private messages | |
4 | * | |
5 | * Copyright (C) 2004-2005 Lee Hardy <lee@leeh.co.uk> | |
6 | * Copyright (C) 2005-2010 Jilles Tjoelker <jilles@stack.nl> | |
7 | * Copyright (C) 2004-2005 ircd-ratbox development team | |
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 2 of the License, or | |
12 | * (at your option) 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
22 | * USA | |
23 | */ | |
24 | ||
25 | #include "stdinc.h" | |
26 | #include "tgchange.h" | |
27 | #include "channel.h" | |
28 | #include "client.h" | |
29 | #include "s_stats.h" | |
30 | #include "hash.h" | |
31 | #include "s_newconf.h" | |
bc4dea69 | 32 | #include "s_serv.h" |
4f2685f3 | 33 | |
717238d2 JT |
34 | static int add_hashed_target(struct Client *source_p, uint32_t hashv); |
35 | ||
4f2685f3 JT |
36 | struct Channel * |
37 | find_allowing_channel(struct Client *source_p, struct Client *target_p) | |
38 | { | |
39 | rb_dlink_node *ptr; | |
40 | struct membership *msptr; | |
41 | ||
42 | RB_DLINK_FOREACH(ptr, source_p->user->channel.head) | |
43 | { | |
44 | msptr = ptr->data; | |
45 | if (is_chanop_voiced(msptr) && IsMember(target_p, msptr->chptr)) | |
46 | return msptr->chptr; | |
47 | } | |
48 | return NULL; | |
49 | } | |
50 | ||
51 | int | |
52 | add_target(struct Client *source_p, struct Client *target_p) | |
53 | { | |
4f2685f3 | 54 | uint32_t hashv; |
4f2685f3 JT |
55 | |
56 | /* can msg themselves or services without using any target slots */ | |
57 | if(source_p == target_p || IsService(target_p)) | |
58 | return 1; | |
59 | ||
60 | /* special condition for those who have had PRIVMSG crippled to allow them | |
61 | * to talk to IRCops still. | |
62 | * | |
63 | * XXX: is this controversial? | |
64 | */ | |
65 | if(source_p->localClient->target_last > rb_current_time() && IsOper(target_p)) | |
66 | return 1; | |
67 | ||
68 | hashv = fnv_hash_upper((const unsigned char *)use_id(target_p), 32); | |
717238d2 JT |
69 | return add_hashed_target(source_p, hashv); |
70 | } | |
71 | ||
72 | int | |
73 | add_channel_target(struct Client *source_p, struct Channel *chptr) | |
74 | { | |
75 | uint32_t hashv; | |
76 | ||
77 | hashv = fnv_hash_upper((const unsigned char *)chptr->chname, 32); | |
78 | return add_hashed_target(source_p, hashv); | |
79 | } | |
80 | ||
81 | static int | |
82 | add_hashed_target(struct Client *source_p, uint32_t hashv) | |
83 | { | |
84 | int i, j; | |
85 | uint32_t *targets; | |
86 | ||
4f2685f3 JT |
87 | targets = source_p->localClient->targets; |
88 | ||
89 | /* check for existing target, and move it to the head */ | |
90 | for(i = 0; i < TGCHANGE_NUM + TGCHANGE_REPLY; i++) | |
91 | { | |
92 | if(targets[i] == hashv) | |
93 | { | |
94 | for(j = i; j > 0; j--) | |
95 | targets[j] = targets[j - 1]; | |
96 | targets[0] = hashv; | |
97 | return 1; | |
98 | } | |
99 | } | |
100 | ||
101 | if(source_p->localClient->targets_free < TGCHANGE_NUM) | |
102 | { | |
103 | /* first message after connect, we may only start clearing | |
104 | * slots after this message --anfl | |
105 | */ | |
106 | if(!IsTGChange(source_p)) | |
107 | { | |
108 | SetTGChange(source_p); | |
109 | source_p->localClient->target_last = rb_current_time(); | |
110 | } | |
111 | /* clear as many targets as we can */ | |
112 | else if((i = (rb_current_time() - source_p->localClient->target_last) / 60)) | |
113 | { | |
114 | if(i + source_p->localClient->targets_free > TGCHANGE_NUM) | |
115 | source_p->localClient->targets_free = TGCHANGE_NUM; | |
116 | else | |
117 | source_p->localClient->targets_free += i; | |
118 | ||
119 | source_p->localClient->target_last = rb_current_time(); | |
120 | } | |
121 | /* cant clear any, full target list */ | |
122 | else if(source_p->localClient->targets_free == 0) | |
123 | { | |
124 | ServerStats.is_tgch++; | |
125 | add_tgchange(source_p->sockhost); | |
ab894d74 KB |
126 | |
127 | if (!IsTGExcessive(source_p)) | |
128 | { | |
129 | SetTGExcessive(source_p); | |
bc4dea69 KB |
130 | /* This is sent to L_ALL because it's regenerated on all servers |
131 | * that have the TGINFO module loaded. | |
132 | */ | |
133 | sendto_realops_snomask(SNO_BOTS, L_ALL, | |
ab894d74 KB |
134 | "Excessive target change from %s (%s@%s)", |
135 | source_p->name, source_p->username, | |
136 | source_p->orighost); | |
137 | } | |
138 | ||
bc4dea69 KB |
139 | sendto_match_servs(source_p, "*", CAP_ENCAP, NOCAPS, |
140 | "ENCAP * TGINFO 0"); | |
141 | ||
4f2685f3 JT |
142 | return 0; |
143 | } | |
144 | } | |
145 | /* no targets in use, reset their target_last so that they cant | |
146 | * abuse a long idle to get targets back more quickly | |
147 | */ | |
148 | else | |
149 | { | |
150 | source_p->localClient->target_last = rb_current_time(); | |
151 | SetTGChange(source_p); | |
152 | } | |
153 | ||
154 | for(i = TGCHANGE_NUM + TGCHANGE_REPLY - 1; i > 0; i--) | |
155 | targets[i] = targets[i - 1]; | |
156 | targets[0] = hashv; | |
157 | source_p->localClient->targets_free--; | |
158 | return 1; | |
159 | } | |
160 | ||
161 | void | |
162 | add_reply_target(struct Client *source_p, struct Client *target_p) | |
163 | { | |
164 | int i, j; | |
165 | uint32_t hashv; | |
166 | uint32_t *targets; | |
167 | ||
168 | /* can msg themselves or services without using any target slots */ | |
169 | if(source_p == target_p || IsService(target_p)) | |
170 | return; | |
171 | ||
172 | hashv = fnv_hash_upper((const unsigned char *)use_id(target_p), 32); | |
173 | targets = source_p->localClient->targets; | |
174 | ||
175 | /* check for existing target, and move it to the first reply slot | |
176 | * if it is in a reply slot | |
177 | */ | |
178 | for(i = 0; i < TGCHANGE_NUM + TGCHANGE_REPLY; i++) | |
179 | { | |
180 | if(targets[i] == hashv) | |
181 | { | |
182 | if(i > TGCHANGE_NUM) | |
183 | { | |
184 | for(j = i; j > TGCHANGE_NUM; j--) | |
185 | targets[j] = targets[j - 1]; | |
186 | targets[TGCHANGE_NUM] = hashv; | |
187 | } | |
188 | return; | |
189 | } | |
190 | } | |
191 | for(i = TGCHANGE_NUM + TGCHANGE_REPLY - 1; i > TGCHANGE_NUM; i--) | |
192 | targets[i] = targets[i - 1]; | |
193 | targets[TGCHANGE_NUM] = hashv; | |
194 | } |