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212380e3 AC |
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 | |
212380e3 AC |
23 | */ |
24 | ||
25 | #include "stdinc.h" | |
212380e3 AC |
26 | #include "channel.h" |
27 | #include "client.h" | |
28 | #include "hash.h" | |
4562c604 | 29 | #include "match.h" |
212380e3 AC |
30 | #include "ircd.h" |
31 | #include "numeric.h" | |
32 | #include "send.h" | |
33 | #include "s_conf.h" | |
34 | #include "s_serv.h" | |
35 | #include "msg.h" | |
36 | #include "parse.h" | |
37 | #include "modules.h" | |
38 | #include "packet.h" | |
890af0e7 | 39 | #include "tgchange.h" |
d4f7eb4c | 40 | #include "s_newconf.h" |
212380e3 | 41 | |
91ccda4f | 42 | static const char invite_desc[] = "Provides /invite"; |
eeabf33a | 43 | |
3c7d6fcc | 44 | static void m_invite(struct MsgBuf *, struct Client *, struct Client *, int, const char **); |
212380e3 AC |
45 | |
46 | struct Message invite_msgtab = { | |
7baa37a9 | 47 | "INVITE", 0, 0, 0, 0, |
212380e3 AC |
48 | {mg_unreg, {m_invite, 3}, {m_invite, 3}, mg_ignore, mg_ignore, {m_invite, 3}} |
49 | }; | |
4c83e476 | 50 | |
e0622d75 EK |
51 | static int can_invite_hook; |
52 | static int invite_hook; | |
53 | ||
df1f1212 | 54 | mapi_clist_av1 invite_clist[] = { &invite_msgtab, NULL }; |
e0622d75 EK |
55 | mapi_hlist_av1 invite_hlist[] = { |
56 | { "can_invite", &can_invite_hook }, | |
57 | { "invite", &invite_hook }, | |
58 | { NULL, NULL } | |
59 | }; | |
4c83e476 | 60 | |
91ccda4f | 61 | DECLARE_MODULE_AV2(invite, NULL, NULL, invite_clist, invite_hlist, NULL, NULL, NULL, invite_desc); |
212380e3 | 62 | |
f88fd40f | 63 | static bool add_invite(struct Channel *, struct Client *); |
212380e3 AC |
64 | |
65 | /* m_invite() | |
212380e3 AC |
66 | * parv[1] - user to invite |
67 | * parv[2] - channel name | |
68 | */ | |
3c7d6fcc | 69 | static void |
428ca87b | 70 | m_invite(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) |
212380e3 AC |
71 | { |
72 | struct Client *target_p; | |
73 | struct Channel *chptr; | |
74 | struct membership *msptr; | |
75 | int store_invite = 0; | |
e0622d75 | 76 | hook_data_channel_approval hdata = { 0 }; |
212380e3 AC |
77 | |
78 | if(MyClient(source_p) && !IsFloodDone(source_p)) | |
79 | flood_endgrace(source_p); | |
80 | ||
8c39f0bf JT |
81 | if(MyClient(source_p)) |
82 | target_p = find_named_person(parv[1]); | |
83 | else | |
84 | target_p = find_person(parv[1]); | |
85 | if(target_p == NULL) | |
212380e3 | 86 | { |
0482ebf7 | 87 | if(!MyClient(source_p) && IsDigit(parv[1][0])) |
55abcbb2 KB |
88 | sendto_one_numeric(source_p, ERR_NOSUCHNICK, |
89 | "* :Target left IRC. Failed to invite to %s", | |
0482ebf7 JT |
90 | parv[2]); |
91 | else | |
55abcbb2 KB |
92 | sendto_one_numeric(source_p, ERR_NOSUCHNICK, |
93 | form_str(ERR_NOSUCHNICK), | |
0482ebf7 | 94 | parv[1]); |
3c7d6fcc | 95 | return; |
212380e3 AC |
96 | } |
97 | ||
98 | if(check_channel_name(parv[2]) == 0) | |
99 | { | |
100 | sendto_one_numeric(source_p, ERR_BADCHANNAME, | |
101 | form_str(ERR_BADCHANNAME), | |
102 | parv[2]); | |
3c7d6fcc | 103 | return; |
212380e3 AC |
104 | } |
105 | ||
212380e3 | 106 | /* Do not send local channel invites to users if they are not on the |
55abcbb2 | 107 | * same server as the person sending the INVITE message. |
212380e3 AC |
108 | */ |
109 | if(parv[2][0] == '&' && !MyConnect(target_p)) | |
110 | { | |
111 | sendto_one(source_p, form_str(ERR_USERNOTONSERV), | |
112 | me.name, source_p->name, target_p->name); | |
3c7d6fcc | 113 | return; |
212380e3 AC |
114 | } |
115 | ||
18fc47e6 JT |
116 | if(((MyConnect(source_p) && !IsExemptResv(source_p)) || |
117 | (MyConnect(target_p) && !IsExemptResv(target_p))) && | |
118 | hash_find_resv(parv[2])) | |
119 | { | |
120 | sendto_one_numeric(source_p, ERR_BADCHANNAME, | |
121 | form_str(ERR_BADCHANNAME), | |
122 | parv[2]); | |
3c7d6fcc | 123 | return; |
18fc47e6 JT |
124 | } |
125 | ||
212380e3 AC |
126 | if((chptr = find_channel(parv[2])) == NULL) |
127 | { | |
128 | sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL, | |
129 | form_str(ERR_NOSUCHCHANNEL), parv[2]); | |
3c7d6fcc | 130 | return; |
212380e3 AC |
131 | } |
132 | ||
133 | msptr = find_channel_membership(chptr, source_p); | |
134 | if(MyClient(source_p) && (msptr == NULL)) | |
135 | { | |
136 | sendto_one_numeric(source_p, ERR_NOTONCHANNEL, | |
137 | form_str(ERR_NOTONCHANNEL), parv[2]); | |
3c7d6fcc | 138 | return; |
212380e3 AC |
139 | } |
140 | ||
141 | if(IsMember(target_p, chptr)) | |
142 | { | |
143 | sendto_one_numeric(source_p, ERR_USERONCHANNEL, | |
144 | form_str(ERR_USERONCHANNEL), | |
145 | target_p->name, parv[2]); | |
3c7d6fcc | 146 | return; |
212380e3 AC |
147 | } |
148 | ||
e3c27d7d | 149 | if (MyClient(source_p)) |
212380e3 | 150 | { |
e3c27d7d AC |
151 | hdata.chptr = chptr; |
152 | hdata.msptr = msptr; | |
153 | hdata.client = source_p; | |
154 | hdata.target = target_p; | |
155 | hdata.approved = !(is_chanop(msptr) || (chptr->mode.mode & MODE_FREEINVITE)); | |
156 | ||
157 | call_hook(can_invite_hook, &hdata); | |
158 | if (hdata.approved) | |
e0622d75 EK |
159 | { |
160 | if (hdata.error) | |
161 | sendto_one_numeric(source_p, hdata.approved, "%s", hdata.error); | |
27590ae0 | 162 | else |
e0622d75 | 163 | sendto_one(source_p, form_str(ERR_CHANOPRIVSNEEDED), |
e3c27d7d | 164 | me.name, source_p->name, parv[2]); |
4371dcbd | 165 | |
e3c27d7d AC |
166 | return; |
167 | } | |
212380e3 AC |
168 | } |
169 | ||
1ebf4db4 JT |
170 | /* store invites when they could affect the ability to join |
171 | * for +l/+j just check if the mode is set, this varies over time | |
172 | */ | |
173 | if(chptr->mode.mode & MODE_INVITEONLY || | |
174 | (chptr->mode.mode & MODE_REGONLY && EmptyString(target_p->user->suser)) || | |
175 | chptr->mode.limit || chptr->mode.join_num) | |
307328bb JT |
176 | store_invite = 1; |
177 | ||
212380e3 AC |
178 | if(MyConnect(source_p)) |
179 | { | |
d4f7eb4c | 180 | if (ConfigFileEntry.target_change && !IsOperGeneral(source_p) && |
890af0e7 JT |
181 | !find_allowing_channel(source_p, target_p) && |
182 | !add_target(source_p, target_p)) | |
183 | { | |
184 | sendto_one(source_p, form_str(ERR_TARGCHANGE), | |
185 | me.name, source_p->name, target_p->name); | |
3c7d6fcc | 186 | return; |
890af0e7 | 187 | } |
55abcbb2 | 188 | sendto_one(source_p, form_str(RPL_INVITING), |
212380e3 AC |
189 | me.name, source_p->name, |
190 | target_p->name, parv[2]); | |
c127b45b | 191 | if(target_p->user->away) |
212380e3 | 192 | sendto_one_numeric(source_p, RPL_AWAY, form_str(RPL_AWAY), |
c127b45b | 193 | target_p->name, target_p->user->away); |
212380e3 AC |
194 | } |
195 | /* invite timestamp */ | |
196 | else if(parc > 3 && !EmptyString(parv[3])) | |
197 | { | |
198 | /* this should never be less than */ | |
199 | if(atol(parv[3]) > chptr->channelts) | |
3c7d6fcc | 200 | return; |
212380e3 AC |
201 | } |
202 | ||
203 | if(MyConnect(target_p)) | |
204 | { | |
e0622d75 EK |
205 | hdata.chptr = chptr; |
206 | hdata.msptr = msptr; | |
207 | hdata.client = source_p; | |
208 | hdata.target = target_p; | |
209 | hdata.approved = 0; | |
210 | ||
211 | call_hook(invite_hook, &hdata); | |
212 | ||
213 | if (hdata.approved) | |
214 | { | |
215 | if (hdata.error) | |
216 | sendto_one_numeric(source_p, hdata.approved, "%s", hdata.error); | |
217 | return; | |
218 | } | |
219 | ||
890af0e7 | 220 | add_reply_target(target_p, source_p); |
55abcbb2 KB |
221 | sendto_one(target_p, ":%s!%s@%s INVITE %s :%s", |
222 | source_p->name, source_p->username, source_p->host, | |
212380e3 AC |
223 | target_p->name, chptr->chname); |
224 | ||
225 | if(store_invite) | |
91ccda4f EK |
226 | add_invite(chptr, target_p); |
227 | } | |
228 | else if (target_p->from != client_p) | |
229 | { | |
230 | sendto_one_prefix(target_p, source_p, "INVITE", "%s %lu", | |
231 | chptr->chname, (unsigned long) chptr->channelts); | |
212380e3 | 232 | } |
212380e3 AC |
233 | } |
234 | ||
235 | /* add_invite() | |
236 | * | |
237 | * input - channel to add invite to, client to add | |
f88fd40f | 238 | * output - true if it is a new invite, else false |
212380e3 AC |
239 | * side effects - client is added to invite list. |
240 | */ | |
f88fd40f | 241 | static bool |
212380e3 AC |
242 | add_invite(struct Channel *chptr, struct Client *who) |
243 | { | |
5b96d9a6 | 244 | rb_dlink_node *ptr; |
212380e3 AC |
245 | |
246 | /* already invited? */ | |
5b96d9a6 | 247 | RB_DLINK_FOREACH(ptr, who->user->invited.head) |
212380e3 AC |
248 | { |
249 | if(ptr->data == chptr) | |
f88fd40f | 250 | return false; |
212380e3 AC |
251 | } |
252 | ||
253 | /* ok, if their invite list is too long, remove the tail */ | |
55abcbb2 | 254 | if((int)rb_dlink_list_length(&who->user->invited) >= |
212380e3 AC |
255 | ConfigChannel.max_chans_per_user) |
256 | { | |
257 | ptr = who->user->invited.tail; | |
258 | del_invite(ptr->data, who); | |
259 | } | |
260 | ||
261 | /* add user to channel invite list */ | |
7018b86a | 262 | rb_dlinkAddAlloc(who, &chptr->invites); |
212380e3 AC |
263 | |
264 | /* add channel to user invite list */ | |
7018b86a | 265 | rb_dlinkAddAlloc(chptr, &who->user->invited); |
f88fd40f AC |
266 | |
267 | return true; | |
212380e3 | 268 | } |