661 lines
14 KiB
C
661 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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* $Id: hurt.c 3161 2007-01-25 07:23:01Z nenolod $
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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 "event.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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/* {{{ 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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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 int mo_hurt(struct Client *, struct Client *, int, const char **);
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static int me_hurt(struct Client *, struct Client *, int, const char **);
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static int mo_heal(struct Client *, struct Client *, int, const char **);
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static int me_heal(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 int heal_nick(struct Client *, struct Client *);
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static int nick_is_valid(const char *);
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/* }}} */
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/* {{{ State containers */
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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, MFLG_SLOW, {
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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, MFLG_SLOW, {
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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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DECLARE_MODULE_AV1(
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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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"$Revision: 3161 $"
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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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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 = CurrentTime;
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/* add our event handlers. */
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eventAdd("hurt_expire", hurt_expire_event, NULL, 60);
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eventAdd("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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dlink_node *ptr, *next_ptr;
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/* and delete our events. */
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eventDelete(hurt_expire_event, NULL);
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eventDelete(hurt_check_event, NULL);
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DLINK_FOREACH_SAFE (ptr, next_ptr, hurt_state.hurt_clients.head)
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{
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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 int 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 int
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mo_hurt(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 0;
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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 0;
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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 0;
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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 0;
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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 0;
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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 0;
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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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return 0;
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}
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/* }}} */
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/* {{{ static int 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 int
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me_hurt(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 0;
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if ((expire_time = atoi(parv[1])) < 1)
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return 0;
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if (hurt_find(parv[2]) != NULL)
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return 0;
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if (EmptyString(parv[3]))
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return 0;
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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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return 0;
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}
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/* }}} */
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/* {{{ static int 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 int
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mo_heal(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 0;
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}
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if (nick_is_valid(parv[1]))
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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 0;
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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 0;
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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 0;
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}
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return 0;
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}
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/* }}} */
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static int
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me_heal(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 0;
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if (nick_is_valid(parv[1]))
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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 0;
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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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else
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return 0;
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return 0;
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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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dlink_node *ptr, *next_ptr;
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struct Client *client_p;
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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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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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USED_TARGETS(client_p) = 0;
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client_p->localClient->target_last = CurrentTime; /* 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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dlink_node *ptr, *next_ptr;
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hurt_t *hurt;
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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 <= CurrentTime)
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{
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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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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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USED_TARGETS(source_p) = 10;
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source_p->localClient->target_last = CurrentTime + 600; /* don't ask --nenolod */
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SetTGChange(source_p);
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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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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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return;
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}
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return;
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}
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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.
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* source_p - source (oper who added the HURT)
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* hurt - HURT to be propagated
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*/
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static void
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hurt_propagate(struct Client *client_p, struct Client *source_p, hurt_t *hurt)
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{
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if (client_p)
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sendto_one(client_p,
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":%s ENCAP %s HURT %ld %s :%s",
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source_p->name, client_p->name,
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(long)(hurt->expire - CurrentTime),
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hurt->ip, hurt->reason);
|
|
else
|
|
sendto_server(&me, NULL, NOCAPS, NOCAPS,
|
|
":%s ENCAP * HURT %ld %s :%s",
|
|
source_p->name,
|
|
(long)(hurt->expire - CurrentTime),
|
|
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 = MyMalloc(sizeof(hurt_t));
|
|
|
|
DupString(hurt->ip, ip);
|
|
DupString(hurt->reason, reason);
|
|
hurt->expire = CurrentTime + expire;
|
|
|
|
return hurt;
|
|
}
|
|
/* }}} */
|
|
|
|
/* {{{ static void hurt_destroy() */
|
|
static void
|
|
hurt_destroy(void *hurt)
|
|
{
|
|
hurt_t *h;
|
|
|
|
if (!hurt)
|
|
return;
|
|
|
|
h = (hurt_t *) hurt;
|
|
MyFree(h->ip);
|
|
MyFree(h->reason);
|
|
MyFree(h);
|
|
}
|
|
/* }}} */
|
|
|
|
static void
|
|
hurt_add(hurt_t *hurt)
|
|
{
|
|
dlinkAddAlloc(hurt, &hurt_confs);
|
|
}
|
|
|
|
static hurt_t *
|
|
hurt_find_exact(const char *ip)
|
|
{
|
|
dlink_node *ptr;
|
|
hurt_t *hurt;
|
|
|
|
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)
|
|
{
|
|
dlink_node *ptr;
|
|
hurt_t *hurt;
|
|
|
|
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);
|
|
|
|
dlinkFindDestroy(hurt, &hurt_confs);
|
|
hurt_destroy(hurt);
|
|
}
|
|
|
|
/* {{{ static int heal_nick() */
|
|
static int
|
|
heal_nick(struct Client *source_p, struct Client *target_p)
|
|
{
|
|
if (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);
|
|
USED_TARGETS(target_p) = 0;
|
|
target_p->localClient->target_last = CurrentTime; /* don't ask --nenolod */
|
|
return 1;
|
|
}
|
|
else
|
|
{
|
|
sendto_one_notice(source_p, ":%s was not hurt", target_p->name);
|
|
return 0;
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
/*
|
|
* Anything else...
|
|
*/
|
|
|
|
/* {{{ static int nick_is_valid() */
|
|
static int
|
|
nick_is_valid(const char *nick)
|
|
{
|
|
const char *s = nick;
|
|
|
|
for (; *s != '\0'; s++) {
|
|
if (!IsNickChar(*s))
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
/* }}} */
|
|
|
|
/*
|
|
* vim: ts=8 sw=8 noet fdm=marker tw=80
|
|
*/
|