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Commit | Line | Data |
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429cf1b7 AC |
1 | /* |
2 | * oper-override for charybdis. | |
3 | * | |
4 | * adds usermode +p and has a timer event that is iterated over to disable | |
5 | * usermode +p after a while... | |
6 | * | |
7 | * you need to have oper:override permission on the opers you want to be | |
8 | * able to use this extension. | |
9 | */ | |
10 | ||
11 | #include "stdinc.h" | |
12 | #include "modules.h" | |
13 | #include "hook.h" | |
14 | #include "client.h" | |
15 | #include "ircd.h" | |
16 | #include "send.h" | |
17 | #include "hash.h" | |
18 | #include "s_conf.h" | |
19 | #include "s_user.h" | |
20 | #include "s_serv.h" | |
21 | #include "numeric.h" | |
22 | #include "privilege.h" | |
23 | #include "s_newconf.h" | |
24 | ||
25 | static void check_umode_change(void *data); | |
26 | static void hack_channel_access(void *data); | |
d3076881 | 27 | static void hack_can_join(void *data); |
429cf1b7 AC |
28 | |
29 | mapi_hfn_list_av1 override_hfnlist[] = { | |
30 | { "umode_changed", (hookfn) check_umode_change }, | |
31 | { "get_channel_access", (hookfn) hack_channel_access }, | |
d3076881 | 32 | { "can_join", (hookfn) hack_can_join }, |
429cf1b7 AC |
33 | { NULL, NULL } |
34 | }; | |
35 | ||
36 | #define IsOperOverride(x) (HasPrivilege((x), "oper:override")) | |
37 | ||
38 | struct OverrideSession { | |
39 | rb_dlink_node node; | |
40 | ||
41 | struct Client *client; | |
42 | time_t deadline; | |
43 | }; | |
44 | ||
45 | rb_dlink_list overriding_opers = { NULL, NULL, 0 }; | |
46 | ||
47 | static void | |
48 | update_session_deadline(struct Client *source_p, struct OverrideSession *session_p) | |
49 | { | |
50 | if (session_p == NULL) | |
51 | { | |
52 | rb_dlink_node *n; | |
53 | ||
54 | RB_DLINK_FOREACH(n, overriding_opers.head) | |
55 | { | |
56 | struct OverrideSession *s = n->data; | |
57 | ||
58 | if (s->client == source_p) | |
59 | { | |
60 | session_p = s; | |
61 | break; | |
62 | } | |
63 | } | |
64 | } | |
65 | ||
66 | if (session_p == NULL) | |
67 | { | |
68 | session_p = rb_malloc(sizeof(struct OverrideSession)); | |
69 | session_p->client = source_p; | |
70 | } | |
71 | ||
72 | session_p->deadline = rb_current_time() + 1800; | |
73 | ||
74 | rb_dlinkDelete(&session_p->node, &overriding_opers); | |
75 | rb_dlinkAdd(session_p, &session_p->node, &overriding_opers); | |
76 | } | |
77 | ||
78 | static void | |
79 | expire_override_deadlines(void *unused) | |
80 | { | |
81 | rb_dlink_node *n, *tn; | |
82 | ||
83 | RB_DLINK_FOREACH_SAFE(n, tn, overriding_opers.head) | |
84 | { | |
85 | struct OverrideSession *session_p = n->data; | |
86 | ||
87 | if (session_p->deadline > rb_current_time()) | |
88 | break; | |
89 | else if (session_p->deadline < rb_current_time()) | |
90 | { | |
91 | const char *parv[4] = {session_p->client->name, session_p->client->name, "-p", NULL}; | |
92 | user_mode(session_p->client, session_p->client, 3, parv); | |
93 | } | |
94 | } | |
95 | } | |
96 | ||
97 | static void | |
98 | check_umode_change(void *vdata) | |
99 | { | |
100 | hook_data_umode_changed *data = (hook_data_umode_changed *)vdata; | |
101 | struct Client *source_p = data->client; | |
102 | ||
103 | if (!MyClient(source_p)) | |
104 | return; | |
105 | ||
106 | /* didn't change +p umode, we don't need to do anything */ | |
107 | if (!((data->oldumodes ^ source_p->umodes) & user_modes['p'])) | |
108 | return; | |
109 | ||
110 | if (!IsOperOverride(source_p)) | |
111 | { | |
112 | source_p->umodes &= ~user_modes['p']; | |
113 | return; | |
114 | } | |
115 | ||
116 | if (source_p->umodes & user_modes['p']) | |
117 | { | |
118 | update_session_deadline(source_p, NULL); | |
119 | ||
120 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, "%s has enabled oper-override (+p)", | |
121 | get_oper_name(source_p)); | |
122 | } | |
123 | else if (!(source_p->umodes & user_modes['p'])) | |
124 | { | |
125 | rb_dlink_node *n, *tn; | |
126 | ||
127 | RB_DLINK_FOREACH_SAFE(n, tn, overriding_opers.head) | |
128 | { | |
129 | struct OverrideSession *session_p = n->data; | |
130 | ||
131 | if (session_p->client != source_p) | |
132 | continue; | |
133 | ||
134 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, "%s has disabled oper-override (+p)", | |
135 | get_oper_name(session_p->client)); | |
136 | ||
137 | rb_dlinkDelete(n, &overriding_opers); | |
138 | rb_free(session_p); | |
139 | } | |
140 | } | |
141 | } | |
142 | ||
143 | static void | |
144 | hack_channel_access(void *vdata) | |
145 | { | |
146 | hook_data_channel_approval *data = (hook_data_channel_approval *) vdata; | |
147 | ||
148 | if (data->approved == CHFL_CHANOP) | |
149 | return; | |
150 | ||
151 | if (data->client->umodes & user_modes['p']) | |
152 | { | |
153 | update_session_deadline(data->client, NULL); | |
154 | data->approved = CHFL_CHANOP; | |
155 | ||
156 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, "%s is using oper-override on %s (modehacking)", | |
157 | get_oper_name(data->client), data->chptr->chname); | |
158 | } | |
159 | } | |
160 | ||
d3076881 AC |
161 | static void |
162 | hack_can_join(void *vdata) | |
163 | { | |
164 | hook_data_channel *data = (hook_data_channel *) vdata; | |
165 | ||
166 | if (data->approved == 0) | |
167 | return; | |
168 | ||
169 | if (data->client->umodes & user_modes['p']) | |
170 | { | |
171 | update_session_deadline(data->client, NULL); | |
172 | data->approved = 0; | |
173 | ||
174 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, "%s is using oper-override on %s (banwalking)", | |
175 | get_oper_name(data->client), data->chptr->chname); | |
176 | } | |
177 | } | |
178 | ||
429cf1b7 AC |
179 | struct ev_entry *expire_override_deadlines_ev = NULL; |
180 | ||
181 | static int | |
182 | _modinit(void) | |
183 | { | |
184 | /* add the usermode to the available slot */ | |
185 | user_modes['p'] = find_umode_slot(); | |
186 | construct_umodebuf(); | |
187 | ||
188 | expire_override_deadlines_ev = rb_event_add("expire_override_deadlines", expire_override_deadlines, NULL, 60); | |
189 | ||
190 | return 0; | |
191 | } | |
192 | ||
193 | static void | |
194 | _moddeinit(void) | |
195 | { | |
196 | /* disable the umode and remove it from the available list */ | |
197 | user_modes['p'] = 0; | |
198 | construct_umodebuf(); | |
199 | ||
200 | rb_event_delete(expire_override_deadlines_ev); | |
201 | } | |
202 | ||
203 | DECLARE_MODULE_AV1(override, _modinit, _moddeinit, NULL, NULL, | |
204 | override_hfnlist, "$Revision: 3526 $"); |