mirror of
https://github.com/matrix-construct/construct
synced 2024-08-23 01:54:46 +02:00
Also fix up some return values and stuff to use bool (or void if nothing). I just did it whilst I was here. According to jilles, the return value used to signify whether or not the client had exited. This was error-prone and was fixed a long, long time ago, but the return value was left int for historical reasons. Since the return type is not used (and has no clear use case anyway), it's safe to just get rid of it.
634 lines
14 KiB
C
634 lines
14 KiB
C
/*
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* charybdis: an advanced Internet Relay Chat Daemon(ircd).
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*
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* Copyright (C) 2006 charybdis development team
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* All rights reserved
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*/
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#include "stdinc.h"
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#include "modules.h"
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#include "hook.h"
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#include "client.h"
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#include "ircd.h"
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#include "send.h"
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#include "numeric.h"
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#include "hostmask.h"
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#include "s_conf.h"
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#include "s_newconf.h"
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#include "hash.h"
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#include "messages.h"
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#include "s_assert.h"
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/* {{{ Structures */
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#define HURT_CUTOFF (10) /* protocol messages. */
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#define HURT_DEFAULT_EXPIRE (7 * 24 * 60) /* minutes. */
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#define HURT_EXIT_REASON "Hurt: Failed to identify to services"
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enum {
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HEAL_NICK = 0,
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HEAL_IP
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};
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typedef struct _hurt_state {
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time_t start_time;
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uint32_t n_hurts;
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rb_dlink_list hurt_clients;
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uint16_t cutoff;
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time_t default_expire;
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const char *exit_reason;
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} hurt_state_t;
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typedef struct _hurt {
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char *ip;
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struct sockaddr *saddr;
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int saddr_bits;
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char *reason;
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time_t expire;
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} hurt_t;
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/* }}} */
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/* {{{ Prototypes */
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static void mo_hurt(struct MsgBuf *msgbuf_p, struct Client *, struct Client *, int, const char **);
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static void me_hurt(struct MsgBuf *msgbuf_p, struct Client *, struct Client *, int, const char **);
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static void mo_heal(struct MsgBuf *msgbuf_p, struct Client *, struct Client *, int, const char **);
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static void me_heal(struct MsgBuf *msgbuf_p, struct Client *, struct Client *, int, const char **);
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static int modinit(void);
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static void modfini(void);
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static void client_exit_hook(hook_data_client_exit *);
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static void new_local_user_hook(struct Client *);
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static void doing_stats_hook(hook_data_int *hdata);
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static void hurt_check_event(void *);
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static void hurt_expire_event(void *);
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static hurt_t *hurt_new(time_t, const char *, const char *);
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static void hurt_add(hurt_t *);
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static void hurt_propagate(struct Client *, struct Client *, hurt_t *);
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static hurt_t *hurt_find(const char *ip);
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static hurt_t *hurt_find_exact(const char *ip);
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static void hurt_remove(const char *ip);
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static void hurt_destroy(void *hurt);
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static void heal_nick(struct Client *, struct Client *);
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/* }}} */
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/* {{{ State containers */
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rb_dlink_list hurt_confs = { NULL, NULL, 0 };
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/* }}} */
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/* {{{ Messages */
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struct Message hurt_msgtab = {
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"HURT", 0, 0, 0, 0, {
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mg_ignore, mg_ignore, mg_ignore,
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mg_ignore, {me_hurt, 0}, {mo_hurt, 3}
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}
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};
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struct Message heal_msgtab = {
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"HEAL", 0, 0, 0, 0, {
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mg_ignore, mg_ignore, mg_ignore,
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mg_ignore, {me_heal, 0}, {mo_heal, 2}
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}
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};
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/* }}} */
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/* {{{ Misc module stuff */
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mapi_hfn_list_av1 hurt_hfnlist[] = {
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{"client_exit", (hookfn) client_exit_hook},
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{"new_local_user", (hookfn) new_local_user_hook},
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{"doing_stats", (hookfn) doing_stats_hook},
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{NULL, NULL},
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};
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mapi_clist_av1 hurt_clist[] = { &hurt_msgtab, &heal_msgtab, NULL };
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static const char hurt_desc[] =
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"Prevents \"hurt\" users from messaging anyone but operators or "
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"services until they identify or are \"healed\"";
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DECLARE_MODULE_AV2(
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hurt,
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modinit,
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modfini,
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hurt_clist,
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NULL,
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hurt_hfnlist,
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NULL,
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NULL,
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hurt_desc
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);
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/* }}} */
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hurt_state_t hurt_state = {
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.cutoff = HURT_CUTOFF,
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.default_expire = HURT_DEFAULT_EXPIRE,
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.exit_reason = HURT_EXIT_REASON,
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};
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/*
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* Module constructor/destructor.
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*/
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/* {{{ static int modinit() */
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struct ev_entry *hurt_expire_ev = NULL;
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struct ev_entry *hurt_check_ev = NULL;
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static int
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modinit(void)
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{
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/* set-up hurt_state. */
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hurt_state.start_time = rb_current_time();
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/* add our event handlers. */
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hurt_expire_ev = rb_event_add("hurt_expire", hurt_expire_event, NULL, 60);
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hurt_check_ev = rb_event_add("hurt_check", hurt_check_event, NULL, 5);
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return 0;
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}
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/* }}} */
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/* {{{ static void modfini() */
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static void
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modfini(void)
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{
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rb_dlink_node *ptr, *next_ptr;
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/* and delete our events. */
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rb_event_delete(hurt_expire_ev);
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rb_event_delete(hurt_check_ev);
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RB_DLINK_FOREACH_SAFE (ptr, next_ptr, hurt_state.hurt_clients.head)
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{
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rb_dlinkDestroy(ptr, &hurt_state.hurt_clients);
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}
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}
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/* }}} */
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/*
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* Message handlers.
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*/
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/* {{{ static void mo_hurt()
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*
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* HURT [<expire>] <ip> <reason>
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*
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* parv[1] - expire or ip
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* parv[2] - ip or reason
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* parv[3] - reason or NULL
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*/
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static void
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mo_hurt(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p,
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int parc, const char **parv)
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{
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const char *ip, *expire, *reason;
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int expire_time;
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hurt_t *hurt;
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struct Client *target_p;
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if (!IsOperK(source_p)) {
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sendto_one(source_p, form_str(ERR_NOPRIVS), me.name,
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source_p->name, "kline");
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return;
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}
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if (parc == 3)
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expire = NULL, ip = parv[1], reason = parv[2];
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else
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expire = parv[1], ip = parv[2], reason = parv[3];
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if (!expire)
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expire_time = HURT_DEFAULT_EXPIRE;
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if (expire && (expire_time = valid_temp_time(expire)) < 1) {
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sendto_one_notice(source_p, ":Permanent HURTs are not supported");
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return;
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}
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if (EmptyString(reason)) {
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sendto_one_notice(source_p, ":Empty HURT reasons are bad for business");
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return;
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}
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/* Is this a client? */
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if (strchr(ip, '.') == NULL && strchr(ip, ':') == NULL)
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{
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target_p = find_named_person(ip);
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if (target_p == NULL)
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{
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sendto_one_numeric(source_p, ERR_NOSUCHNICK,
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form_str(ERR_NOSUCHNICK), ip);
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return;
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}
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ip = target_p->orighost;
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}
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else
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{
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if (!strncmp(ip, "*@", 2))
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ip += 2;
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if (strchr(ip, '!') || strchr(ip, '@'))
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{
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sendto_one_notice(source_p, ":Invalid HURT mask [%s]",
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ip);
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return;
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}
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}
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if (hurt_find(ip) != NULL) {
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sendto_one(source_p, ":[%s] already HURT", ip);
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return;
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}
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/*
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* okay, we've got this far, now it's time to add the the HURT locally
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* and propagate it to other servers on the network.
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*/
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sendto_realops_snomask(SNO_GENERAL, L_ALL,
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"%s added HURT on [%s] for %ld minutes with reason [%s]",
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get_oper_name(source_p), ip, (long) expire_time / 60, reason);
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hurt = hurt_new(expire_time, ip, reason);
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hurt_add(hurt);
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hurt_propagate(NULL, source_p, hurt);
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}
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/* }}} */
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/* {{{ static void me_hurt()
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*
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* [ENCAP mask] HURT <target> <expire> <ip> <reason>
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*
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* parv[1] - expire
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* parv[2] - ip
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* parv[3] - reason
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*/
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static void
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me_hurt(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p,
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int parc, const char **parv)
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{
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time_t expire_time;
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hurt_t *hurt;
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/*
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* right... if we don't get enough arguments, or if we get any invalid
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* arguments, just ignore this request - shit happens, and it's not worth
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* dropping a server over.
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*/
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if (parc < 4 || !IsPerson(source_p))
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return;
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if ((expire_time = atoi(parv[1])) < 1)
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return;
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if (hurt_find(parv[2]) != NULL)
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return;
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if (EmptyString(parv[3]))
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return;
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sendto_realops_snomask(SNO_GENERAL, L_ALL,
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"%s added HURT on [%s] for %ld minutes with reason [%s]",
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get_oper_name(source_p), parv[2], (long) expire_time / 60, parv[3]);
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hurt = hurt_new(expire_time, parv[2], parv[3]);
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hurt_add(hurt);
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}
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/* }}} */
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/* {{{ static void mo_heal()
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*
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* HURT <nick>|<ip>
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*
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* parv[1] - nick or ip
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*/
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static void
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mo_heal(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p,
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int parc, const char **parv)
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{
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struct Client *target_p;
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if (!IsOperUnkline(source_p))
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{
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sendto_one(source_p, form_str(ERR_NOPRIVS),
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me.name, source_p->name, "unkline");
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return;
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}
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if (clean_nick(parv[1], 0))
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{
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target_p = find_named_person(parv[1]);
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if (target_p == NULL)
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{
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sendto_one_numeric(source_p, ERR_NOSUCHNICK,
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form_str(ERR_NOSUCHNICK), parv[1]);
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return;
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}
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if (MyConnect(target_p))
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heal_nick(source_p, target_p);
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else
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sendto_one(target_p, ":%s ENCAP %s HEAL %s",
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get_id(source_p, target_p),
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target_p->servptr->name,
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get_id(target_p, target_p));
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}
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else if (strchr(parv[1], '.'))
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{
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if (hurt_find_exact(parv[1]) == NULL)
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{
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sendto_one_notice(source_p, ":Mask [%s] is not HURT", parv[1]);
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return;
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}
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hurt_remove(parv[1]);
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sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s removed HURT on %s",
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get_oper_name(source_p), parv[1]);
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sendto_server(NULL, NULL, NOCAPS, NOCAPS, ":%s ENCAP * HEAL %s",
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source_p->name, parv[1]);
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}
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else
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{
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sendto_one(source_p, ":[%s] is not a valid IP address/nick", parv[1]);
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return;
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}
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}
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/* }}} */
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static void
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me_heal(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p,
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int parc, const char **parv)
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{
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struct Client *target_p;
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/* as noted in me_hurt(), if we don't get sufficient arguments...
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* *poof*, it's dropped...
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*/
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if (parc < 2)
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return;
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if (clean_nick(parv[1], 0))
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{
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target_p = find_person(parv[1]);
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if (target_p != NULL && MyConnect(target_p))
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heal_nick(source_p, target_p);
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}
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else if (strchr(parv[1], '.')) /* host or mask to remove ban for */
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{
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if (hurt_find_exact(parv[1]) == NULL)
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return;
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hurt_remove(parv[1]);
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sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s removed HURT on %s",
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get_oper_name(source_p), parv[1]);
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}
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}
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/*
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* Event handlers.
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*/
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/* {{{ static void hurt_check_event() */
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static void
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hurt_check_event(void *arg)
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{
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rb_dlink_node *ptr, *next_ptr;
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struct Client *client_p;
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RB_DLINK_FOREACH_SAFE (ptr, next_ptr, hurt_state.hurt_clients.head) {
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client_p = ptr->data;
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if (!EmptyString(client_p->user->suser))
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{
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rb_dlinkDestroy(ptr, &hurt_state.hurt_clients);
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sendto_one_notice(client_p, ":HURT restriction removed for this session");
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client_p->localClient->target_last = rb_current_time(); /* don't ask --nenolod */
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}
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else if (client_p->localClient->receiveM > hurt_state.cutoff)
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exit_client(NULL, client_p, &me, hurt_state.exit_reason);
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}
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}
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/* }}} */
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/* {{{ static void hurt_expire_event() */
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static void
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hurt_expire_event(void *unused)
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{
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rb_dlink_node *ptr, *next_ptr;
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hurt_t *hurt;
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RB_DLINK_FOREACH_SAFE (ptr, next_ptr, hurt_confs.head)
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{
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hurt = (hurt_t *) ptr->data;
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if (hurt->expire <= rb_current_time())
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{
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rb_dlinkFindDestroy(hurt, &hurt_confs);
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hurt_destroy(hurt);
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}
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}
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}
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/* }}} */
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/*
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* Hook functions.
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*/
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/* {{{ static void client_exit_hook() */
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static void
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client_exit_hook(hook_data_client_exit *data)
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{
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s_assert(data != NULL);
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s_assert(data->target != NULL);
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rb_dlinkFindDestroy(data->target, &hurt_state.hurt_clients);
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}
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/* }}} */
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/* {{{ static void new_local_user_hook() */
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static void
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new_local_user_hook(struct Client *source_p)
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{
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if (IsAnyDead(source_p) || !EmptyString(source_p->user->suser) ||
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IsExemptKline(source_p))
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return;
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if (hurt_find(source_p->sockhost) || hurt_find(source_p->orighost))
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{
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source_p->localClient->target_last = rb_current_time() + 600; /* don't ask --nenolod */
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SetTGChange(source_p);
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rb_dlinkAddAlloc(source_p, &hurt_state.hurt_clients);
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sendto_one_notice(source_p, ":You are hurt. Please identify to services immediately, or use /stats p for assistance.");
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}
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}
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/* }}} */
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/* {{{ static void doing_stats_hook() */
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static void
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doing_stats_hook(hook_data_int *hdata)
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{
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rb_dlink_node *ptr;
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hurt_t *hurt;
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struct Client *source_p;
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s_assert(hdata);
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s_assert(hdata->client);
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source_p = hdata->client;
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if(hdata->arg2 != (int) 's')
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return;
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if((ConfigFileEntry.stats_k_oper_only == 2) && !IsOper(source_p))
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return;
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if ((ConfigFileEntry.stats_k_oper_only == 1) && !IsOper(source_p))
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{
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hurt = hurt_find(source_p->sockhost);
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if (hurt != NULL)
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{
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sendto_one_numeric(source_p, RPL_STATSKLINE,
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form_str(RPL_STATSKLINE), 's',
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"*", hurt->ip, hurt->reason, "", "");
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return;
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}
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hurt = hurt_find(source_p->orighost);
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if (hurt != NULL)
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{
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sendto_one_numeric(source_p, RPL_STATSKLINE,
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form_str(RPL_STATSKLINE), 's',
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"*", hurt->ip, hurt->reason, "", "");
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}
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return;
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}
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RB_DLINK_FOREACH(ptr, hurt_confs.head)
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{
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hurt = (hurt_t *) ptr->data;
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sendto_one_numeric(source_p, RPL_STATSKLINE,
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form_str(RPL_STATSKLINE), 's',
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"*", hurt->ip, hurt->reason, "", "");
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}
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}
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/* }}} */
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/* {{{ static void hurt_propagate()
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*
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* client_p - specific server to propagate HURT to, or NULL to propagate to all
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* servers.
|
|
* source_p - source (oper who added the HURT)
|
|
* hurt - HURT to be propagated
|
|
*/
|
|
static void
|
|
hurt_propagate(struct Client *client_p, struct Client *source_p, hurt_t *hurt)
|
|
{
|
|
if (client_p)
|
|
sendto_one(client_p,
|
|
":%s ENCAP %s HURT %ld %s :%s",
|
|
source_p->name, client_p->name,
|
|
(long)(hurt->expire - rb_current_time()),
|
|
hurt->ip, hurt->reason);
|
|
else
|
|
sendto_server(&me, NULL, NOCAPS, NOCAPS,
|
|
":%s ENCAP * HURT %ld %s :%s",
|
|
source_p->name,
|
|
(long)(hurt->expire - rb_current_time()),
|
|
hurt->ip, hurt->reason);
|
|
}
|
|
/* }}} */
|
|
|
|
/* {{{ static hurt_t *hurt_new() */
|
|
static hurt_t *
|
|
hurt_new(time_t expire, const char *ip, const char *reason)
|
|
{
|
|
hurt_t *hurt;
|
|
|
|
hurt = rb_malloc(sizeof(hurt_t));
|
|
|
|
hurt->ip = rb_strdup(ip);
|
|
hurt->reason = rb_strdup(reason);
|
|
hurt->expire = rb_current_time() + expire;
|
|
|
|
return hurt;
|
|
}
|
|
/* }}} */
|
|
|
|
/* {{{ static void hurt_destroy() */
|
|
static void
|
|
hurt_destroy(void *hurt)
|
|
{
|
|
hurt_t *h;
|
|
|
|
if (!hurt)
|
|
return;
|
|
|
|
h = (hurt_t *) hurt;
|
|
rb_free(h->ip);
|
|
rb_free(h->reason);
|
|
rb_free(h);
|
|
}
|
|
/* }}} */
|
|
|
|
static void
|
|
hurt_add(hurt_t *hurt)
|
|
{
|
|
rb_dlinkAddAlloc(hurt, &hurt_confs);
|
|
}
|
|
|
|
static hurt_t *
|
|
hurt_find_exact(const char *ip)
|
|
{
|
|
rb_dlink_node *ptr;
|
|
hurt_t *hurt;
|
|
|
|
RB_DLINK_FOREACH(ptr, hurt_confs.head)
|
|
{
|
|
hurt = (hurt_t *) ptr->data;
|
|
|
|
if (!strcasecmp(ip, hurt->ip))
|
|
return hurt;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static hurt_t *
|
|
hurt_find(const char *ip)
|
|
{
|
|
rb_dlink_node *ptr;
|
|
hurt_t *hurt;
|
|
|
|
RB_DLINK_FOREACH(ptr, hurt_confs.head)
|
|
{
|
|
hurt = (hurt_t *) ptr->data;
|
|
|
|
if (match(hurt->ip, ip))
|
|
return hurt;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void
|
|
hurt_remove(const char *ip)
|
|
{
|
|
hurt_t *hurt = hurt_find_exact(ip);
|
|
|
|
rb_dlinkFindDestroy(hurt, &hurt_confs);
|
|
hurt_destroy(hurt);
|
|
}
|
|
|
|
/* {{{ static void heal_nick() */
|
|
static void
|
|
heal_nick(struct Client *source_p, struct Client *target_p)
|
|
{
|
|
if (rb_dlinkFindDestroy(target_p, &hurt_state.hurt_clients))
|
|
{
|
|
sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s used HEAL on %s",
|
|
get_oper_name(source_p), get_client_name(target_p, HIDE_IP));
|
|
sendto_one_notice(target_p, ":HURT restriction temporarily removed by operator");
|
|
sendto_one_notice(source_p, ":HURT restriction on %s temporarily removed", target_p->name);
|
|
target_p->localClient->target_last = rb_current_time(); /* don't ask --nenolod */
|
|
}
|
|
else
|
|
{
|
|
sendto_one_notice(source_p, ":%s was not hurt", target_p->name);
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
/*
|
|
* vim: ts=8 sw=8 noet fdm=marker tw=80
|
|
*/
|