/* * oper-override for charybdis. * * adds usermode +p and has a timer event that is iterated over to disable * usermode +p after a while... * * you need to have oper:override permission on the opers you want to be * able to use this extension. */ #include "stdinc.h" #include "modules.h" #include "hook.h" #include "client.h" #include "ircd.h" #include "send.h" #include "hash.h" #include "s_conf.h" #include "s_user.h" #include "s_serv.h" #include "numeric.h" #include "privilege.h" #include "s_newconf.h" static void check_umode_change(void *data); static void hack_channel_access(void *data); static void hack_can_join(void *data); static void hack_can_send(void *data); static void handle_client_exit(void *data); mapi_hfn_list_av1 override_hfnlist[] = { { "umode_changed", (hookfn) check_umode_change }, { "get_channel_access", (hookfn) hack_channel_access }, { "can_join", (hookfn) hack_can_join }, { "can_send", (hookfn) hack_can_send }, { "client_exit", (hookfn) handle_client_exit }, { NULL, NULL } }; #define IsOperOverride(x) (HasPrivilege((x), "oper:override")) struct OverrideSession { rb_dlink_node node; struct Client *client; time_t deadline; }; rb_dlink_list overriding_opers = { NULL, NULL, 0 }; static void update_session_deadline(struct Client *source_p, struct OverrideSession *session_p) { if (session_p == NULL) { rb_dlink_node *n; RB_DLINK_FOREACH(n, overriding_opers.head) { struct OverrideSession *s = n->data; if (s->client == source_p) { session_p = s; break; } } } if (session_p == NULL) { session_p = rb_malloc(sizeof(struct OverrideSession)); session_p->client = source_p; } session_p->deadline = rb_current_time() + 1800; rb_dlinkDelete(&session_p->node, &overriding_opers); rb_dlinkAdd(session_p, &session_p->node, &overriding_opers); } static void expire_override_deadlines(void *unused) { rb_dlink_node *n, *tn; RB_DLINK_FOREACH_SAFE(n, tn, overriding_opers.head) { struct OverrideSession *session_p = n->data; if (session_p->deadline > rb_current_time()) break; else if (session_p->deadline < rb_current_time()) { const char *parv[4] = {session_p->client->name, session_p->client->name, "-p", NULL}; user_mode(session_p->client, session_p->client, 3, parv); } } } static void check_umode_change(void *vdata) { hook_data_umode_changed *data = (hook_data_umode_changed *)vdata; struct Client *source_p = data->client; if (!MyClient(source_p)) return; /* didn't change +p umode, we don't need to do anything */ if (!((data->oldumodes ^ source_p->umodes) & user_modes['p'])) return; if (!IsOperOverride(source_p)) { sendto_one_notice(source_p, ":*** You need oper:override privilege for +p"); source_p->umodes &= ~user_modes['p']; return; } if (source_p->umodes & user_modes['p']) { update_session_deadline(source_p, NULL); sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, "%s has enabled oper-override (+p)", get_oper_name(source_p)); } else if (!(source_p->umodes & user_modes['p'])) { rb_dlink_node *n, *tn; RB_DLINK_FOREACH_SAFE(n, tn, overriding_opers.head) { struct OverrideSession *session_p = n->data; if (session_p->client != source_p) continue; sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, "%s has disabled oper-override (+p)", get_oper_name(session_p->client)); rb_dlinkDelete(n, &overriding_opers); rb_free(session_p); } } } static void hack_channel_access(void *vdata) { hook_data_channel_approval *data = (hook_data_channel_approval *) vdata; if (data->approved == CHFL_CHANOP) return; if (data->client->umodes & user_modes['p']) { update_session_deadline(data->client, NULL); data->approved = CHFL_CHANOP; sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, "%s is using oper-override on %s (modehacking)", get_oper_name(data->client), data->chptr->chname); } } static void hack_can_join(void *vdata) { hook_data_channel *data = (hook_data_channel *) vdata; if (data->approved == 0) return; if (data->client->umodes & user_modes['p']) { update_session_deadline(data->client, NULL); data->approved = 0; sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, "%s is using oper-override on %s (banwalking)", get_oper_name(data->client), data->chptr->chname); } } static void hack_can_send(void *vdata) { hook_data_channel_approval *data = (hook_data_channel_approval *) vdata; if (data->approved == CAN_SEND_NONOP || data->approved == CAN_SEND_OPV) return; if (data->client->umodes & user_modes['p']) { data->approved = CAN_SEND_NONOP; if (MyClient(data->client)) { update_session_deadline(data->client, NULL); sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, "%s is using oper-override on %s (forcing message)", get_oper_name(data->client), data->chptr->chname); } } } static void handle_client_exit(void *vdata) { hook_data_client_exit *data = (hook_data_client_exit *) vdata; rb_dlink_node *n, *tn; struct Client *source_p = data->target; RB_DLINK_FOREACH_SAFE(n, tn, overriding_opers.head) { struct OverrideSession *session_p = n->data; if (session_p->client != source_p) continue; rb_dlinkDelete(n, &overriding_opers); rb_free(session_p); } } struct ev_entry *expire_override_deadlines_ev = NULL; static int _modinit(void) { /* add the usermode to the available slot */ user_modes['p'] = find_umode_slot(); construct_umodebuf(); expire_override_deadlines_ev = rb_event_add("expire_override_deadlines", expire_override_deadlines, NULL, 60); return 0; } static void _moddeinit(void) { /* disable the umode and remove it from the available list */ user_modes['p'] = 0; construct_umodebuf(); rb_event_delete(expire_override_deadlines_ev); } DECLARE_MODULE_AV1(override, _modinit, _moddeinit, NULL, NULL, override_hfnlist, "$Revision: 3526 $");