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1 | /* | |
2 | * Helpops system. | |
3 | * -- kaniini | |
4 | */ | |
5 | ||
6 | #include "stdinc.h" | |
7 | #include "modules.h" | |
8 | #include "client.h" | |
9 | #include "hook.h" | |
10 | #include "ircd.h" | |
11 | #include "send.h" | |
12 | #include "s_conf.h" | |
13 | #include "s_user.h" | |
14 | #include "s_newconf.h" | |
15 | #include "numeric.h" | |
16 | ||
17 | static const char helpops_desc[] = "The helpops system as used by freenode"; | |
18 | ||
19 | static rb_dlink_list helper_list = { NULL, NULL, 0 }; | |
20 | static void h_hdl_stats_request(void *hdata); | |
21 | static void h_hdl_new_remote_user(void *client_p); | |
22 | static void h_hdl_client_exit(void *hdata); | |
23 | static void h_hdl_umode_changed(void *hdata); | |
24 | static void h_hdl_whois(void *hdata); | |
25 | static void recurse_client_exit(struct Client *client_p); | |
26 | static void helper_add(struct Client *client_p); | |
27 | static void helper_delete(struct Client *client_p); | |
28 | static void mo_dehelper(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
29 | static void me_dehelper(struct MsgBuf *, struct Client *, struct Client *, int, const char **); | |
30 | static void do_dehelper(struct Client *source_p, struct Client *target_p); | |
31 | ||
32 | mapi_hfn_list_av1 helpops_hfnlist[] = { | |
33 | { "doing_stats", h_hdl_stats_request }, | |
34 | { "new_remote_user", h_hdl_new_remote_user }, | |
35 | { "client_exit", h_hdl_client_exit }, | |
36 | { "umode_changed", h_hdl_umode_changed }, | |
37 | { "doing_whois", h_hdl_whois }, | |
38 | { "doing_whois_global", h_hdl_whois }, | |
39 | { NULL, NULL } | |
40 | }; | |
41 | ||
42 | #define UMODECHAR_HELPOPS 'h' | |
43 | ||
44 | struct Message dehelper_msgtab = { | |
45 | "DEHELPER", 0, 0, 0, 0, | |
46 | {mg_unreg, mg_not_oper, mg_not_oper, mg_ignore, {me_dehelper, 2}, {mo_dehelper, 2}} | |
47 | }; | |
48 | ||
49 | mapi_clist_av1 helpops_clist[] = { &dehelper_msgtab, NULL }; | |
50 | ||
51 | static void | |
52 | mo_dehelper(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char **parv) | |
53 | { | |
54 | struct Client *target_p; | |
55 | ||
56 | if (!HasPrivilege(source_p, "oper:dehelper")) | |
57 | { | |
58 | sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name, "dehelper"); | |
59 | return; | |
60 | } | |
61 | ||
62 | if(!(target_p = find_named_person(parv[1]))) | |
63 | { | |
64 | sendto_one_numeric(source_p, ERR_NOSUCHNICK, form_str(ERR_NOSUCHNICK), parv[1]); | |
65 | return; | |
66 | } | |
67 | ||
68 | if(MyClient(target_p)) | |
69 | do_dehelper(source_p, target_p); | |
70 | else | |
71 | sendto_one(target_p, ":%s ENCAP %s DEHELPER %s", | |
72 | use_id(source_p), target_p->servptr->name, use_id(target_p)); | |
73 | } | |
74 | ||
75 | static void | |
76 | me_dehelper(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char **parv) | |
77 | { | |
78 | struct Client *target_p = find_person(parv[1]); | |
79 | if(!target_p) | |
80 | { | |
81 | sendto_one_numeric(source_p, ERR_NOSUCHNICK, form_str(ERR_NOSUCHNICK), parv[1]); | |
82 | return; | |
83 | } | |
84 | if(!MyClient(target_p)) | |
85 | return; | |
86 | ||
87 | do_dehelper(source_p, target_p); | |
88 | } | |
89 | ||
90 | static void | |
91 | do_dehelper(struct Client *source_p, struct Client *target_p) | |
92 | { | |
93 | const char *fakeparv[4]; | |
94 | static const char minus_helpops[3] = {'-', UMODECHAR_HELPOPS, '\0'}; | |
95 | ||
96 | if(!(target_p->umodes & user_modes[UMODECHAR_HELPOPS])) | |
97 | return; | |
98 | ||
99 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, "%s is using DEHELPER on %s", | |
100 | source_p->name, target_p->name); | |
101 | sendto_one_notice(target_p, ":*** %s is using DEHELPER on you", source_p->name); | |
102 | ||
103 | fakeparv[0] = fakeparv[1] = target_p->name; | |
104 | fakeparv[2] = minus_helpops; | |
105 | fakeparv[3] = NULL; | |
106 | user_mode(target_p, target_p, 3, fakeparv); | |
107 | } | |
108 | ||
109 | static int | |
110 | _modinit(void) | |
111 | { | |
112 | rb_dlink_node *ptr; | |
113 | ||
114 | user_modes[UMODECHAR_HELPOPS] = find_umode_slot(); | |
115 | construct_umodebuf(); | |
116 | ||
117 | RB_DLINK_FOREACH (ptr, global_client_list.head) | |
118 | { | |
119 | struct Client *client_p = ptr->data; | |
120 | if (IsPerson(client_p) && (client_p->umodes & user_modes[UMODECHAR_HELPOPS])) | |
121 | helper_add(client_p); | |
122 | } | |
123 | ||
124 | return 0; | |
125 | } | |
126 | ||
127 | static void | |
128 | _moddeinit(void) | |
129 | { | |
130 | rb_dlink_node *n, *tn; | |
131 | ||
132 | user_modes[UMODECHAR_HELPOPS] = 0; | |
133 | construct_umodebuf(); | |
134 | ||
135 | RB_DLINK_FOREACH_SAFE(n, tn, helper_list.head) | |
136 | rb_dlinkDestroy(n, &helper_list); | |
137 | } | |
138 | ||
139 | static void | |
140 | h_hdl_stats_request(void *data) | |
141 | { | |
142 | hook_data_int *hdata = data; | |
143 | struct Client *target_p; | |
144 | rb_dlink_node *helper_ptr; | |
145 | unsigned int count = 0; | |
146 | ||
147 | if (hdata->arg2 != 'p') | |
148 | return; | |
149 | ||
150 | RB_DLINK_FOREACH (helper_ptr, helper_list.head) | |
151 | { | |
152 | target_p = helper_ptr->data; | |
153 | ||
154 | if(target_p->user->away) | |
155 | continue; | |
156 | ||
157 | count++; | |
158 | ||
159 | if (IsOper(hdata->client) && SeesOper(target_p, hdata->client) | |
160 | && !EmptyString(target_p->user->opername)) | |
161 | sendto_one_numeric(hdata->client, RPL_STATSDEBUG, | |
162 | "p :%s (%s@%s) {%s}", | |
163 | target_p->name, target_p->username, target_p->host, | |
164 | target_p->user->opername); | |
165 | else | |
166 | sendto_one_numeric(hdata->client, RPL_STATSDEBUG, | |
167 | "p :%s (%s@%s)", | |
168 | target_p->name, target_p->username, target_p->host); | |
169 | } | |
170 | ||
171 | sendto_one_numeric(hdata->client, RPL_STATSDEBUG, | |
172 | "p :%u staff members", count); | |
173 | ||
174 | hdata->result = 1; | |
175 | } | |
176 | ||
177 | static void | |
178 | helper_add(struct Client *client_p) | |
179 | { | |
180 | if (rb_dlinkFind(client_p, &helper_list) != NULL) | |
181 | return; | |
182 | ||
183 | rb_dlinkAddAlloc(client_p, &helper_list); | |
184 | } | |
185 | ||
186 | static void | |
187 | helper_delete(struct Client *client_p) | |
188 | { | |
189 | rb_dlinkFindDestroy(client_p, &helper_list); | |
190 | } | |
191 | ||
192 | static void | |
193 | h_hdl_new_remote_user(void *data) | |
194 | { | |
195 | struct Client *client_p = data; | |
196 | if (client_p->umodes & user_modes[UMODECHAR_HELPOPS]) | |
197 | helper_add(client_p); | |
198 | } | |
199 | ||
200 | static void | |
201 | recurse_client_exit(struct Client *client_p) | |
202 | { | |
203 | if (IsPerson(client_p)) | |
204 | { | |
205 | if (client_p->umodes & user_modes[UMODECHAR_HELPOPS]) | |
206 | helper_delete(client_p); | |
207 | } | |
208 | else if (IsServer(client_p)) | |
209 | { | |
210 | rb_dlink_node *nptr; | |
211 | ||
212 | RB_DLINK_FOREACH(nptr, client_p->serv->users.head) | |
213 | recurse_client_exit(nptr->data); | |
214 | ||
215 | RB_DLINK_FOREACH(nptr, client_p->serv->servers.head) | |
216 | recurse_client_exit(nptr->data); | |
217 | } | |
218 | } | |
219 | ||
220 | static void | |
221 | h_hdl_client_exit(void *data) | |
222 | { | |
223 | hook_data_client_exit *hdata = data; | |
224 | recurse_client_exit(hdata->target); | |
225 | } | |
226 | ||
227 | static void | |
228 | h_hdl_umode_changed(void *data) | |
229 | { | |
230 | hook_data_umode_changed *hdata = data; | |
231 | struct Client *source_p = hdata->client; | |
232 | ||
233 | /* didn't change +h umode, we don't need to do anything */ | |
234 | bool changed = (hdata->oldumodes ^ source_p->umodes) & user_modes[UMODECHAR_HELPOPS]; | |
235 | ||
236 | if (source_p->umodes & user_modes[UMODECHAR_HELPOPS]) | |
237 | { | |
238 | if (MyClient(source_p) && !HasPrivilege(source_p, "usermode:helpops")) | |
239 | { | |
240 | source_p->umodes &= ~user_modes[UMODECHAR_HELPOPS]; | |
241 | sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name, "usermode:helpops"); | |
242 | /* they didn't ask for +h so we must be removing it */ | |
243 | if (!changed) | |
244 | helper_delete(source_p); | |
245 | return; | |
246 | } | |
247 | ||
248 | if (changed) | |
249 | helper_add(source_p); | |
250 | } | |
251 | else if (changed) | |
252 | { | |
253 | helper_delete(source_p); | |
254 | } | |
255 | } | |
256 | ||
257 | static void | |
258 | h_hdl_whois(void *data) | |
259 | { | |
260 | hook_data_client *hdata = data; | |
261 | struct Client *source_p = hdata->client; | |
262 | struct Client *target_p = hdata->target; | |
263 | ||
264 | if ((target_p->umodes & user_modes[UMODECHAR_HELPOPS]) && EmptyString(target_p->user->away)) | |
265 | { | |
266 | sendto_one_numeric(source_p, RPL_WHOISHELPOP, form_str(RPL_WHOISHELPOP), target_p->name); | |
267 | } | |
268 | } | |
269 | ||
270 | DECLARE_MODULE_AV2(helpops, _modinit, _moddeinit, helpops_clist, NULL, helpops_hfnlist, NULL, NULL, helpops_desc); |