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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); | |
27 | ||
28 | mapi_hfn_list_av1 override_hfnlist[] = { | |
29 | { "umode_changed", (hookfn) check_umode_change }, | |
30 | { "get_channel_access", (hookfn) hack_channel_access }, | |
31 | { NULL, NULL } | |
32 | }; | |
33 | ||
34 | #define IsOperOverride(x) (HasPrivilege((x), "oper:override")) | |
35 | ||
36 | struct OverrideSession { | |
37 | rb_dlink_node node; | |
38 | ||
39 | struct Client *client; | |
40 | time_t deadline; | |
41 | }; | |
42 | ||
43 | rb_dlink_list overriding_opers = { NULL, NULL, 0 }; | |
44 | ||
45 | static void | |
46 | update_session_deadline(struct Client *source_p, struct OverrideSession *session_p) | |
47 | { | |
48 | if (session_p == NULL) | |
49 | { | |
50 | rb_dlink_node *n; | |
51 | ||
52 | RB_DLINK_FOREACH(n, overriding_opers.head) | |
53 | { | |
54 | struct OverrideSession *s = n->data; | |
55 | ||
56 | if (s->client == source_p) | |
57 | { | |
58 | session_p = s; | |
59 | break; | |
60 | } | |
61 | } | |
62 | } | |
63 | ||
64 | if (session_p == NULL) | |
65 | { | |
66 | session_p = rb_malloc(sizeof(struct OverrideSession)); | |
67 | session_p->client = source_p; | |
68 | } | |
69 | ||
70 | session_p->deadline = rb_current_time() + 1800; | |
71 | ||
72 | rb_dlinkDelete(&session_p->node, &overriding_opers); | |
73 | rb_dlinkAdd(session_p, &session_p->node, &overriding_opers); | |
74 | } | |
75 | ||
76 | static void | |
77 | expire_override_deadlines(void *unused) | |
78 | { | |
79 | rb_dlink_node *n, *tn; | |
80 | ||
81 | RB_DLINK_FOREACH_SAFE(n, tn, overriding_opers.head) | |
82 | { | |
83 | struct OverrideSession *session_p = n->data; | |
84 | ||
85 | if (session_p->deadline > rb_current_time()) | |
86 | break; | |
87 | else if (session_p->deadline < rb_current_time()) | |
88 | { | |
89 | const char *parv[4] = {session_p->client->name, session_p->client->name, "-p", NULL}; | |
90 | user_mode(session_p->client, session_p->client, 3, parv); | |
91 | } | |
92 | } | |
93 | } | |
94 | ||
95 | static void | |
96 | check_umode_change(void *vdata) | |
97 | { | |
98 | hook_data_umode_changed *data = (hook_data_umode_changed *)vdata; | |
99 | struct Client *source_p = data->client; | |
100 | ||
101 | if (!MyClient(source_p)) | |
102 | return; | |
103 | ||
104 | /* didn't change +p umode, we don't need to do anything */ | |
105 | if (!((data->oldumodes ^ source_p->umodes) & user_modes['p'])) | |
106 | return; | |
107 | ||
108 | if (!IsOperOverride(source_p)) | |
109 | { | |
110 | source_p->umodes &= ~user_modes['p']; | |
111 | return; | |
112 | } | |
113 | ||
114 | if (source_p->umodes & user_modes['p']) | |
115 | { | |
116 | update_session_deadline(source_p, NULL); | |
117 | ||
118 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, "%s has enabled oper-override (+p)", | |
119 | get_oper_name(source_p)); | |
120 | } | |
121 | else if (!(source_p->umodes & user_modes['p'])) | |
122 | { | |
123 | rb_dlink_node *n, *tn; | |
124 | ||
125 | RB_DLINK_FOREACH_SAFE(n, tn, overriding_opers.head) | |
126 | { | |
127 | struct OverrideSession *session_p = n->data; | |
128 | ||
129 | if (session_p->client != source_p) | |
130 | continue; | |
131 | ||
132 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, "%s has disabled oper-override (+p)", | |
133 | get_oper_name(session_p->client)); | |
134 | ||
135 | rb_dlinkDelete(n, &overriding_opers); | |
136 | rb_free(session_p); | |
137 | } | |
138 | } | |
139 | } | |
140 | ||
141 | static void | |
142 | hack_channel_access(void *vdata) | |
143 | { | |
144 | hook_data_channel_approval *data = (hook_data_channel_approval *) vdata; | |
145 | ||
146 | if (data->approved == CHFL_CHANOP) | |
147 | return; | |
148 | ||
149 | if (data->client->umodes & user_modes['p']) | |
150 | { | |
151 | update_session_deadline(data->client, NULL); | |
152 | data->approved = CHFL_CHANOP; | |
153 | ||
154 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, "%s is using oper-override on %s (modehacking)", | |
155 | get_oper_name(data->client), data->chptr->chname); | |
156 | } | |
157 | } | |
158 | ||
159 | struct ev_entry *expire_override_deadlines_ev = NULL; | |
160 | ||
161 | static int | |
162 | _modinit(void) | |
163 | { | |
164 | /* add the usermode to the available slot */ | |
165 | user_modes['p'] = find_umode_slot(); | |
166 | construct_umodebuf(); | |
167 | ||
168 | expire_override_deadlines_ev = rb_event_add("expire_override_deadlines", expire_override_deadlines, NULL, 60); | |
169 | ||
170 | return 0; | |
171 | } | |
172 | ||
173 | static void | |
174 | _moddeinit(void) | |
175 | { | |
176 | /* disable the umode and remove it from the available list */ | |
177 | user_modes['p'] = 0; | |
178 | construct_umodebuf(); | |
179 | ||
180 | rb_event_delete(expire_override_deadlines_ev); | |
181 | } | |
182 | ||
183 | DECLARE_MODULE_AV1(override, _modinit, _moddeinit, NULL, NULL, | |
184 | override_hfnlist, "$Revision: 3526 $"); |