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1 | /* | |
2 | * ircd-ratbox: A slightly useful ircd. | |
3 | * m_invite.c: Invites the user to join a channel. | |
4 | * | |
5 | * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center | |
6 | * Copyright (C) 1996-2002 Hybrid Development Team | |
7 | * Copyright (C) 2002-2005 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 "common.h" | |
27 | #include "channel.h" | |
28 | #include "client.h" | |
29 | #include "hash.h" | |
30 | #include "match.h" | |
31 | #include "ircd.h" | |
32 | #include "numeric.h" | |
33 | #include "send.h" | |
34 | #include "s_conf.h" | |
35 | #include "s_serv.h" | |
36 | #include "msg.h" | |
37 | #include "parse.h" | |
38 | #include "modules.h" | |
39 | #include "packet.h" | |
40 | #include "tgchange.h" | |
41 | ||
42 | static const char invite_desc[] = "Provides facilities for invite and related notifications"; | |
43 | ||
44 | static void m_invite(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
45 | static unsigned int CAP_INVITE_NOTIFY = 0; | |
46 | ||
47 | struct Message invite_msgtab = { | |
48 | "INVITE", 0, 0, 0, 0, | |
49 | {mg_unreg, {m_invite, 3}, {m_invite, 3}, mg_ignore, mg_ignore, {m_invite, 3}} | |
50 | }; | |
51 | ||
52 | mapi_clist_av1 invite_clist[] = { &invite_msgtab, NULL }; | |
53 | ||
54 | mapi_cap_list_av2 invite_cap_list[] = { | |
55 | { MAPI_CAP_CLIENT, "invite-notify", NULL, &CAP_INVITE_NOTIFY }, | |
56 | { 0, NULL, NULL, NULL } | |
57 | }; | |
58 | ||
59 | DECLARE_MODULE_AV2(invite, NULL, NULL, invite_clist, NULL, NULL, invite_cap_list, NULL, invite_desc); | |
60 | ||
61 | static void add_invite(struct Channel *, struct Client *); | |
62 | ||
63 | /* m_invite() | |
64 | * parv[1] - user to invite | |
65 | * parv[2] - channel name | |
66 | */ | |
67 | static void | |
68 | m_invite(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
69 | { | |
70 | struct Client *target_p; | |
71 | struct Channel *chptr; | |
72 | struct membership *msptr; | |
73 | int store_invite = 0; | |
74 | ||
75 | if(MyClient(source_p) && !IsFloodDone(source_p)) | |
76 | flood_endgrace(source_p); | |
77 | ||
78 | if(MyClient(source_p)) | |
79 | target_p = find_named_person(parv[1]); | |
80 | else | |
81 | target_p = find_person(parv[1]); | |
82 | if(target_p == NULL) | |
83 | { | |
84 | if(!MyClient(source_p) && IsDigit(parv[1][0])) | |
85 | sendto_one_numeric(source_p, ERR_NOSUCHNICK, | |
86 | "* :Target left IRC. Failed to invite to %s", | |
87 | parv[2]); | |
88 | else | |
89 | sendto_one_numeric(source_p, ERR_NOSUCHNICK, | |
90 | form_str(ERR_NOSUCHNICK), | |
91 | parv[1]); | |
92 | return; | |
93 | } | |
94 | ||
95 | if(check_channel_name(parv[2]) == 0) | |
96 | { | |
97 | sendto_one_numeric(source_p, ERR_BADCHANNAME, | |
98 | form_str(ERR_BADCHANNAME), | |
99 | parv[2]); | |
100 | return; | |
101 | } | |
102 | ||
103 | /* Do not send local channel invites to users if they are not on the | |
104 | * same server as the person sending the INVITE message. | |
105 | */ | |
106 | if(parv[2][0] == '&' && !MyConnect(target_p)) | |
107 | { | |
108 | sendto_one(source_p, form_str(ERR_USERNOTONSERV), | |
109 | me.name, source_p->name, target_p->name); | |
110 | return; | |
111 | } | |
112 | ||
113 | if(((MyConnect(source_p) && !IsExemptResv(source_p)) || | |
114 | (MyConnect(target_p) && !IsExemptResv(target_p))) && | |
115 | hash_find_resv(parv[2])) | |
116 | { | |
117 | sendto_one_numeric(source_p, ERR_BADCHANNAME, | |
118 | form_str(ERR_BADCHANNAME), | |
119 | parv[2]); | |
120 | return; | |
121 | } | |
122 | ||
123 | if((chptr = find_channel(parv[2])) == NULL) | |
124 | { | |
125 | sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL, | |
126 | form_str(ERR_NOSUCHCHANNEL), parv[2]); | |
127 | return; | |
128 | } | |
129 | ||
130 | msptr = find_channel_membership(chptr, source_p); | |
131 | if(MyClient(source_p) && (msptr == NULL)) | |
132 | { | |
133 | sendto_one_numeric(source_p, ERR_NOTONCHANNEL, | |
134 | form_str(ERR_NOTONCHANNEL), parv[2]); | |
135 | return; | |
136 | } | |
137 | ||
138 | if(IsMember(target_p, chptr)) | |
139 | { | |
140 | sendto_one_numeric(source_p, ERR_USERONCHANNEL, | |
141 | form_str(ERR_USERONCHANNEL), | |
142 | target_p->name, parv[2]); | |
143 | return; | |
144 | } | |
145 | ||
146 | /* unconditionally require ops, unless the channel is +g */ | |
147 | /* treat remote clients as chanops */ | |
148 | if(MyClient(source_p) && !is_chanop(msptr) && | |
149 | !(chptr->mode.mode & MODE_FREEINVITE)) | |
150 | { | |
151 | sendto_one(source_p, form_str(ERR_CHANOPRIVSNEEDED), | |
152 | me.name, source_p->name, parv[2]); | |
153 | return; | |
154 | } | |
155 | ||
156 | /* store invites when they could affect the ability to join | |
157 | * for +l/+j just check if the mode is set, this varies over time | |
158 | */ | |
159 | if(chptr->mode.mode & MODE_INVITEONLY || | |
160 | (chptr->mode.mode & MODE_REGONLY && EmptyString(target_p->user->suser)) || | |
161 | chptr->mode.limit || chptr->mode.join_num) | |
162 | store_invite = 1; | |
163 | ||
164 | if(MyConnect(source_p)) | |
165 | { | |
166 | if (ConfigFileEntry.target_change && !IsOper(source_p) && | |
167 | !find_allowing_channel(source_p, target_p) && | |
168 | !add_target(source_p, target_p)) | |
169 | { | |
170 | sendto_one(source_p, form_str(ERR_TARGCHANGE), | |
171 | me.name, source_p->name, target_p->name); | |
172 | return; | |
173 | } | |
174 | sendto_one(source_p, form_str(RPL_INVITING), | |
175 | me.name, source_p->name, | |
176 | target_p->name, parv[2]); | |
177 | if(target_p->user->away) | |
178 | sendto_one_numeric(source_p, RPL_AWAY, form_str(RPL_AWAY), | |
179 | target_p->name, target_p->user->away); | |
180 | } | |
181 | /* invite timestamp */ | |
182 | else if(parc > 3 && !EmptyString(parv[3])) | |
183 | { | |
184 | /* this should never be less than */ | |
185 | if(atol(parv[3]) > chptr->channelts) | |
186 | return; | |
187 | } | |
188 | ||
189 | if(MyConnect(target_p)) | |
190 | { | |
191 | if(!IsOper(source_p) && (IsSetCallerId(target_p) || | |
192 | (IsSetRegOnlyMsg(target_p) && !source_p->user->suser[0])) && | |
193 | !accept_message(source_p, target_p)) | |
194 | { | |
195 | if (IsSetRegOnlyMsg(target_p) && !source_p->user->suser[0]) | |
196 | { | |
197 | sendto_one_numeric(source_p, ERR_NONONREG, | |
198 | form_str(ERR_NONONREG), | |
199 | target_p->name); | |
200 | return; | |
201 | } | |
202 | else | |
203 | { | |
204 | /* instead of sending RPL_UMODEGMSG, | |
205 | * just let the invite through | |
206 | */ | |
207 | if((target_p->localClient->last_caller_id_time + | |
208 | ConfigFileEntry.caller_id_wait) >= rb_current_time()) | |
209 | { | |
210 | sendto_one_numeric(source_p, ERR_TARGUMODEG, | |
211 | form_str(ERR_TARGUMODEG), | |
212 | target_p->name); | |
213 | return; | |
214 | } | |
215 | target_p->localClient->last_caller_id_time = rb_current_time(); | |
216 | } | |
217 | } | |
218 | add_reply_target(target_p, source_p); | |
219 | sendto_one(target_p, ":%s!%s@%s INVITE %s :%s", | |
220 | source_p->name, source_p->username, source_p->host, | |
221 | target_p->name, chptr->chname); | |
222 | ||
223 | if(store_invite) | |
224 | { | |
225 | add_invite(chptr, target_p); | |
226 | ||
227 | sendto_channel_local_with_capability(CHFL_CHANOP, 0, CAP_INVITE_NOTIFY, chptr, | |
228 | ":%s NOTICE %s :%s is inviting %s to %s.", | |
229 | me.name, chptr->chname, source_p->name, target_p->name, chptr->chname); | |
230 | sendto_channel_local_with_capability(CHFL_CHANOP, CAP_INVITE_NOTIFY, 0, chptr, | |
231 | ":%s!%s@%s INVITE %s %s", source_p->name, source_p->username, | |
232 | source_p->host, target_p->name, chptr->chname); | |
233 | } | |
234 | } | |
235 | ||
236 | sendto_server(source_p, chptr, CAP_TS6, 0, ":%s INVITE %s %s %lu", | |
237 | use_id(source_p), use_id(target_p), | |
238 | chptr->chname, (unsigned long) chptr->channelts); | |
239 | } | |
240 | ||
241 | /* add_invite() | |
242 | * | |
243 | * input - channel to add invite to, client to add | |
244 | * output - | |
245 | * side effects - client is added to invite list. | |
246 | */ | |
247 | static void | |
248 | add_invite(struct Channel *chptr, struct Client *who) | |
249 | { | |
250 | rb_dlink_node *ptr; | |
251 | ||
252 | /* already invited? */ | |
253 | RB_DLINK_FOREACH(ptr, who->user->invited.head) | |
254 | { | |
255 | if(ptr->data == chptr) | |
256 | return; | |
257 | } | |
258 | ||
259 | /* ok, if their invite list is too long, remove the tail */ | |
260 | if((int)rb_dlink_list_length(&who->user->invited) >= | |
261 | ConfigChannel.max_chans_per_user) | |
262 | { | |
263 | ptr = who->user->invited.tail; | |
264 | del_invite(ptr->data, who); | |
265 | } | |
266 | ||
267 | /* add user to channel invite list */ | |
268 | rb_dlinkAddAlloc(who, &chptr->invites); | |
269 | ||
270 | /* add channel to user invite list */ | |
271 | rb_dlinkAddAlloc(chptr, &who->user->invited); | |
272 | } |