mirror of
https://github.com/matrix-construct/construct
synced 2024-10-19 05:58:56 +02:00
61b517ca3c
* To benefit from the precompiled-header (PCH) it MUST provide "the first C token." Advantages: Never worry about the include stack again. Remember, this means one less thing for random module developers, community people learning C++, and new developers to deal with. It should reduce the learning curve and barrier for participation. Disadvantages: Makes overall compilation a bit slower, especially without any additional work to improve it again. There are several opportunities, places where the PCH is probably being ignored, etc that can be addressed.
445 lines
9.2 KiB
C++
445 lines
9.2 KiB
C++
/* src/bandbi.c
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* An interface to the ban db.
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*
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* Copyright (C) 2006 Lee Hardy <lee -at- leeh.co.uk>
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* Copyright (C) 2006 ircd-ratbox development team
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* 1.Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2.Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3.The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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namespace ircd {
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static void
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bandb_handle_failure(rb_helper *helper, char **parv, int parc) __attribute__((noreturn));
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static char bandb_add_letter[LAST_BANDB_TYPE] = {
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'K', 'D', 'X', 'R'
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};
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rb_dlink_list bandb_pending;
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static rb_helper *bandb_helper;
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static int start_bandb(void);
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static void bandb_parse(rb_helper *);
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static void bandb_restart_cb(rb_helper *);
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static char *bandb_path;
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void
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init_bandb(void)
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{
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if(start_bandb())
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{
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ilog(L_MAIN, "Unable to start bandb helper: %s", strerror(errno));
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exit(0);
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}
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}
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static int
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start_bandb(void)
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{
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using namespace fs;
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char fullpath[PATH_MAX + 1];
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#ifdef _WIN32
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const char *suffix = ".exe";
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#else
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const char *suffix = "";
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#endif
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rb_setenv("BANDB_DBPATH", path::get(path::BANDB), 1);
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if(bandb_path == NULL)
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{
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snprintf(fullpath, sizeof(fullpath), "%s%cbandb%s", path::get(path::LIBEXEC), RB_PATH_SEPARATOR, suffix);
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if(access(fullpath, X_OK) == -1)
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{
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snprintf(fullpath, sizeof(fullpath), "%s%cbin%cbandb%s",
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ConfigFileEntry.dpath, RB_PATH_SEPARATOR, RB_PATH_SEPARATOR, suffix);
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if(access(fullpath, X_OK) == -1)
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{
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ilog(L_MAIN,
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"Unable to execute bandb%s in %s or %s/bin",
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suffix, path::get(path::LIBEXEC), ConfigFileEntry.dpath);
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return 0;
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}
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}
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bandb_path = rb_strdup(fullpath);
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}
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bandb_helper = rb_helper_start("bandb", bandb_path, bandb_parse, bandb_restart_cb);
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if(bandb_helper == NULL)
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{
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ilog(L_MAIN, "Unable to start bandb: %s", strerror(errno));
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sendto_realops_snomask(SNO_GENERAL, L_ALL, "Unable to start bandb: %s",
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strerror(errno));
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return 1;
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}
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rb_helper_run(bandb_helper);
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return 0;
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}
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void
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bandb_add(bandb_type type, struct Client *source_p, const char *mask1,
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const char *mask2, const char *reason, const char *oper_reason, int perm)
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{
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if(bandb_helper == NULL)
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return;
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static char buf[BUFSIZE];
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snprintf(buf, sizeof(buf), "%c %s ", bandb_add_letter[type], mask1);
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if(!EmptyString(mask2))
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rb_snprintf_append(buf, sizeof(buf), "%s ", mask2);
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rb_snprintf_append(buf, sizeof(buf), "%s %ld %d :%s",
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get_oper_name(source_p), (long int)rb_current_time(), perm, reason);
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if(!EmptyString(oper_reason))
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rb_snprintf_append(buf, sizeof(buf), "|%s", oper_reason);
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rb_helper_write(bandb_helper, "%s", buf);
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}
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static char bandb_del_letter[LAST_BANDB_TYPE] = {
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'k', 'd', 'x', 'r'
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};
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void
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bandb_del(bandb_type type, const char *mask1, const char *mask2)
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{
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if(bandb_helper == NULL)
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return;
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static char buf[BUFSIZE];
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buf[0] = '\0';
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rb_snprintf_append(buf, sizeof(buf), "%c %s", bandb_del_letter[type], mask1);
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if(!EmptyString(mask2))
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rb_snprintf_append(buf, sizeof(buf), " %s", mask2);
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rb_helper_write(bandb_helper, "%s", buf);
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}
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static void
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bandb_handle_ban(char *parv[], int parc)
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{
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struct ConfItem *aconf;
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char *p;
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int para = 1;
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aconf = make_conf();
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aconf->port = 0;
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if(parv[0][0] == 'K')
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aconf->user = rb_strdup(parv[para++]);
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aconf->host = rb_strdup(parv[para++]);
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aconf->info.oper = operhash_add(parv[para++]);
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switch (parv[0][0])
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{
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case 'K':
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aconf->status = CONF_KILL;
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break;
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case 'D':
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aconf->status = CONF_DLINE;
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break;
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case 'X':
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aconf->status = CONF_XLINE;
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break;
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case 'R':
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if(IsChannelName(aconf->host))
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aconf->status = CONF_RESV_CHANNEL;
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else
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aconf->status = CONF_RESV_NICK;
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break;
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}
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if((p = strchr(parv[para], '|')))
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{
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*p++ = '\0';
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aconf->spasswd = rb_strdup(p);
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}
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aconf->passwd = rb_strdup(parv[para]);
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rb_dlinkAddAlloc(aconf, &bandb_pending);
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}
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static int
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bandb_check_kline(struct ConfItem *aconf)
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{
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struct rb_sockaddr_storage daddr;
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struct ConfItem *kconf = NULL;
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int aftype;
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const char *p;
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aftype = parse_netmask(aconf->host, &daddr, NULL);
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if(aftype != HM_HOST)
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{
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#ifdef RB_IPV6
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if(aftype == HM_IPV6)
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aftype = AF_INET6;
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else
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#endif
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aftype = AF_INET;
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kconf = find_conf_by_address(aconf->host, NULL, NULL, (struct sockaddr *)&daddr,
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CONF_KILL, aftype, aconf->user, NULL);
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}
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else
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kconf = find_conf_by_address(aconf->host, NULL, NULL, NULL, CONF_KILL, 0, aconf->user, NULL);
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if(kconf && ((kconf->flags & CONF_FLAGS_TEMPORARY) == 0))
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return 0;
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for(p = aconf->user; *p; p++)
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{
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if(!IsUserChar(*p) && !IsKWildChar(*p))
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return 0;
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}
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for(p = aconf->host; *p; p++)
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{
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if(!IsHostChar(*p) && !IsKWildChar(*p))
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return 0;
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}
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return 1;
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}
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static int
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bandb_check_dline(struct ConfItem *aconf)
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{
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struct rb_sockaddr_storage daddr;
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int bits;
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if(!parse_netmask(aconf->host, &daddr, &bits))
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return 0;
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return 1;
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}
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static int
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bandb_check_xline(struct ConfItem *aconf)
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{
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struct ConfItem *xconf;
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/* XXX perhaps convert spaces to \s? -- jilles */
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xconf = find_xline_mask(aconf->host);
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if(xconf != NULL && !(xconf->flags & CONF_FLAGS_TEMPORARY))
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return 0;
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return 1;
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}
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static int
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bandb_check_resv_channel(struct ConfItem *aconf)
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{
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const char *p;
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if(hash_find_resv(aconf->host) || strlen(aconf->host) > CHANNELLEN)
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return 0;
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for(p = aconf->host; *p; p++)
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{
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if(!IsChanChar(*p))
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return 0;
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}
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return 1;
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}
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static int
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bandb_check_resv_nick(struct ConfItem *aconf)
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{
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if(!clean_resv_nick(aconf->host))
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return 0;
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if(find_nick_resv(aconf->host))
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return 0;
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return 1;
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}
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static void
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bandb_handle_clear(void)
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{
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rb_dlink_node *ptr, *next_ptr;
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RB_DLINK_FOREACH_SAFE(ptr, next_ptr, bandb_pending.head)
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{
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free_conf((ConfItem *)ptr->data);
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rb_dlinkDestroy(ptr, &bandb_pending);
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}
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}
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static void
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bandb_handle_finish(void)
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{
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struct ConfItem *aconf;
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rb_dlink_node *ptr, *next_ptr;
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clear_out_address_conf_bans();
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clear_s_newconf_bans();
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RB_DLINK_FOREACH_SAFE(ptr, next_ptr, bandb_pending.head)
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{
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aconf = (ConfItem *)ptr->data;
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rb_dlinkDestroy(ptr, &bandb_pending);
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switch (aconf->status)
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{
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case CONF_KILL:
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if(bandb_check_kline(aconf))
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add_conf_by_address(aconf->host, CONF_KILL, aconf->user, NULL, aconf);
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else
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free_conf(aconf);
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break;
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case CONF_DLINE:
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if(bandb_check_dline(aconf))
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add_conf_by_address(aconf->host, CONF_DLINE, aconf->user, NULL, aconf);
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else
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free_conf(aconf);
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break;
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case CONF_XLINE:
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if(bandb_check_xline(aconf))
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rb_dlinkAddAlloc(aconf, &xline_conf_list);
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else
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free_conf(aconf);
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break;
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case CONF_RESV_CHANNEL:
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if(bandb_check_resv_channel(aconf))
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add_to_resv_hash(aconf->host, aconf);
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else
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free_conf(aconf);
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break;
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case CONF_RESV_NICK:
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if(bandb_check_resv_nick(aconf))
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rb_dlinkAddAlloc(aconf, &resv_conf_list);
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else
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free_conf(aconf);
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break;
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}
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}
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check_banned_lines();
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}
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static void
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bandb_handle_failure(rb_helper *helper, char **parv, int parc)
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{
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if(server_state_foreground)
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fprintf(stderr, "bandb - bandb failure: %s\n", parv[1]);
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ilog(L_MAIN, "bandb - bandb failure: %s", parv[1]);
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sendto_realops_snomask(SNO_GENERAL, L_ALL, "bandb - bandb failure: %s", parv[1]);
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exit(1);
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}
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static void
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bandb_parse(rb_helper *helper)
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{
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static char buf[READBUF_SIZE];
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char *parv[MAXPARA + 1];
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int len, parc;
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while((len = rb_helper_read(helper, buf, sizeof(buf))))
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{
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parc = rb_string_to_array(buf, parv, MAXPARA);
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if(parc < 1)
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continue;
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switch (parv[0][0])
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{
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case '!':
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bandb_handle_failure(helper, parv, parc);
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break;
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case 'K':
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case 'D':
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case 'X':
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case 'R':
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bandb_handle_ban(parv, parc);
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break;
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case 'C':
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bandb_handle_clear();
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break;
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case 'F':
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bandb_handle_finish();
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break;
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}
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}
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}
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void
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bandb_rehash_bans(void)
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{
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if(bandb_helper != NULL)
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rb_helper_write(bandb_helper, "L");
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}
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static void
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bandb_restart_cb(rb_helper *helper)
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{
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ilog(L_MAIN, "bandb - bandb_restart_cb called, bandb helper died?");
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sendto_realops_snomask(SNO_GENERAL, L_ALL,
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"bandb - bandb_restart_cb called, bandb helper died?");
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if(helper != NULL)
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{
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rb_helper_close(helper);
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bandb_helper = NULL;
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}
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start_bandb();
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return;
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}
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} // namespace ircd
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