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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 | |
23 | * | |
0482ebf7 | 24 | * $Id: m_invite.c 3438 2007-05-06 14:46:45Z jilles $ |
212380e3 AC |
25 | */ |
26 | ||
27 | #include "stdinc.h" | |
212380e3 AC |
28 | #include "common.h" |
29 | #include "channel.h" | |
30 | #include "client.h" | |
31 | #include "hash.h" | |
4562c604 | 32 | #include "match.h" |
212380e3 AC |
33 | #include "ircd.h" |
34 | #include "numeric.h" | |
35 | #include "send.h" | |
36 | #include "s_conf.h" | |
37 | #include "s_serv.h" | |
38 | #include "msg.h" | |
39 | #include "parse.h" | |
40 | #include "modules.h" | |
41 | #include "packet.h" | |
42 | ||
43 | static int m_invite(struct Client *, struct Client *, int, const char **); | |
44 | ||
45 | struct Message invite_msgtab = { | |
46 | "INVITE", 0, 0, 0, MFLG_SLOW, | |
47 | {mg_unreg, {m_invite, 3}, {m_invite, 3}, mg_ignore, mg_ignore, {m_invite, 3}} | |
48 | }; | |
49 | mapi_clist_av1 invite_clist[] = { &invite_msgtab, NULL }; | |
0482ebf7 | 50 | DECLARE_MODULE_AV1(invite, NULL, NULL, invite_clist, NULL, NULL, "$Revision: 3438 $"); |
212380e3 AC |
51 | |
52 | static void add_invite(struct Channel *, struct Client *); | |
53 | ||
54 | /* m_invite() | |
212380e3 AC |
55 | * parv[1] - user to invite |
56 | * parv[2] - channel name | |
57 | */ | |
58 | static int | |
59 | m_invite(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
60 | { | |
61 | struct Client *target_p; | |
62 | struct Channel *chptr; | |
63 | struct membership *msptr; | |
64 | int store_invite = 0; | |
65 | ||
66 | if(MyClient(source_p) && !IsFloodDone(source_p)) | |
67 | flood_endgrace(source_p); | |
68 | ||
8c39f0bf JT |
69 | if(MyClient(source_p)) |
70 | target_p = find_named_person(parv[1]); | |
71 | else | |
72 | target_p = find_person(parv[1]); | |
73 | if(target_p == NULL) | |
212380e3 | 74 | { |
0482ebf7 JT |
75 | if(!MyClient(source_p) && IsDigit(parv[1][0])) |
76 | sendto_one_numeric(source_p, ERR_NOSUCHNICK, | |
77 | "* :Target left IRC. Failed to invite to %s", | |
78 | parv[2]); | |
79 | else | |
80 | sendto_one_numeric(source_p, ERR_NOSUCHNICK, | |
81 | form_str(ERR_NOSUCHNICK), | |
82 | parv[1]); | |
212380e3 AC |
83 | return 0; |
84 | } | |
85 | ||
86 | if(check_channel_name(parv[2]) == 0) | |
87 | { | |
88 | sendto_one_numeric(source_p, ERR_BADCHANNAME, | |
89 | form_str(ERR_BADCHANNAME), | |
90 | parv[2]); | |
91 | return 0; | |
92 | } | |
93 | ||
94 | if(!IsChannelName(parv[2])) | |
95 | { | |
96 | if(MyClient(source_p)) | |
97 | sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL, | |
98 | form_str(ERR_NOSUCHCHANNEL), parv[2]); | |
99 | return 0; | |
100 | } | |
101 | ||
102 | /* Do not send local channel invites to users if they are not on the | |
103 | * same server as the person sending the INVITE message. | |
104 | */ | |
105 | if(parv[2][0] == '&' && !MyConnect(target_p)) | |
106 | { | |
107 | sendto_one(source_p, form_str(ERR_USERNOTONSERV), | |
108 | me.name, source_p->name, target_p->name); | |
109 | return 0; | |
110 | } | |
111 | ||
18fc47e6 JT |
112 | if(((MyConnect(source_p) && !IsExemptResv(source_p)) || |
113 | (MyConnect(target_p) && !IsExemptResv(target_p))) && | |
114 | hash_find_resv(parv[2])) | |
115 | { | |
116 | sendto_one_numeric(source_p, ERR_BADCHANNAME, | |
117 | form_str(ERR_BADCHANNAME), | |
118 | parv[2]); | |
119 | return 0; | |
120 | } | |
121 | ||
212380e3 AC |
122 | if((chptr = find_channel(parv[2])) == NULL) |
123 | { | |
124 | sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL, | |
125 | form_str(ERR_NOSUCHCHANNEL), parv[2]); | |
126 | return 0; | |
127 | } | |
128 | ||
129 | msptr = find_channel_membership(chptr, source_p); | |
130 | if(MyClient(source_p) && (msptr == NULL)) | |
131 | { | |
132 | sendto_one_numeric(source_p, ERR_NOTONCHANNEL, | |
133 | form_str(ERR_NOTONCHANNEL), parv[2]); | |
134 | return 0; | |
135 | } | |
136 | ||
137 | if(IsMember(target_p, chptr)) | |
138 | { | |
139 | sendto_one_numeric(source_p, ERR_USERONCHANNEL, | |
140 | form_str(ERR_USERONCHANNEL), | |
141 | target_p->name, parv[2]); | |
142 | return 0; | |
143 | } | |
144 | ||
307328bb JT |
145 | /* unconditionally require ops, unless the channel is +g */ |
146 | /* treat remote clients as chanops */ | |
147 | if(MyClient(source_p) && !is_chanop(msptr) && | |
148 | !(chptr->mode.mode & MODE_FREEINVITE)) | |
212380e3 | 149 | { |
307328bb JT |
150 | sendto_one(source_p, form_str(ERR_CHANOPRIVSNEEDED), |
151 | me.name, source_p->name, parv[2]); | |
152 | return 0; | |
212380e3 AC |
153 | } |
154 | ||
1ebf4db4 JT |
155 | /* store invites when they could affect the ability to join |
156 | * for +l/+j just check if the mode is set, this varies over time | |
157 | */ | |
158 | if(chptr->mode.mode & MODE_INVITEONLY || | |
159 | (chptr->mode.mode & MODE_REGONLY && EmptyString(target_p->user->suser)) || | |
160 | chptr->mode.limit || chptr->mode.join_num) | |
307328bb JT |
161 | store_invite = 1; |
162 | ||
212380e3 AC |
163 | if(MyConnect(source_p)) |
164 | { | |
165 | sendto_one(source_p, form_str(RPL_INVITING), | |
166 | me.name, source_p->name, | |
167 | target_p->name, parv[2]); | |
168 | if(target_p->user->away) | |
169 | sendto_one_numeric(source_p, RPL_AWAY, form_str(RPL_AWAY), | |
170 | target_p->name, target_p->user->away); | |
171 | } | |
172 | /* invite timestamp */ | |
173 | else if(parc > 3 && !EmptyString(parv[3])) | |
174 | { | |
175 | /* this should never be less than */ | |
176 | if(atol(parv[3]) > chptr->channelts) | |
177 | return 0; | |
178 | } | |
179 | ||
180 | if(MyConnect(target_p)) | |
181 | { | |
182 | sendto_one(target_p, ":%s!%s@%s INVITE %s :%s", | |
183 | source_p->name, source_p->username, source_p->host, | |
184 | target_p->name, chptr->chname); | |
185 | ||
186 | if(store_invite) | |
187 | add_invite(chptr, target_p); | |
188 | } | |
189 | else if(target_p->from != client_p) | |
190 | { | |
191 | sendto_one_prefix(target_p, source_p, "INVITE", "%s %lu", | |
192 | chptr->chname, (unsigned long) chptr->channelts); | |
193 | } | |
194 | ||
195 | return 0; | |
196 | } | |
197 | ||
198 | /* add_invite() | |
199 | * | |
200 | * input - channel to add invite to, client to add | |
201 | * output - | |
202 | * side effects - client is added to invite list. | |
203 | */ | |
204 | static void | |
205 | add_invite(struct Channel *chptr, struct Client *who) | |
206 | { | |
5b96d9a6 | 207 | rb_dlink_node *ptr; |
212380e3 AC |
208 | |
209 | /* already invited? */ | |
5b96d9a6 | 210 | RB_DLINK_FOREACH(ptr, who->user->invited.head) |
212380e3 AC |
211 | { |
212 | if(ptr->data == chptr) | |
213 | return; | |
214 | } | |
215 | ||
216 | /* ok, if their invite list is too long, remove the tail */ | |
5b96d9a6 | 217 | if((int)rb_dlink_list_length(&who->user->invited) >= |
212380e3 AC |
218 | ConfigChannel.max_chans_per_user) |
219 | { | |
220 | ptr = who->user->invited.tail; | |
221 | del_invite(ptr->data, who); | |
222 | } | |
223 | ||
224 | /* add user to channel invite list */ | |
7018b86a | 225 | rb_dlinkAddAlloc(who, &chptr->invites); |
212380e3 AC |
226 | |
227 | /* add channel to user invite list */ | |
7018b86a | 228 | rb_dlinkAddAlloc(chptr, &who->user->invited); |
212380e3 AC |
229 | } |
230 | ||
231 |