012b21a68b
Instead support a runtime option. Note that existing oidentd users will have to add write_oidentd = true in their config to keep existing behavior.
321 lines
7.2 KiB
C
321 lines
7.2 KiB
C
/*
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* $Id: bip.c,v 1.39 2005/04/21 06:58:50 nohar Exp $
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*
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* This file is part of the bip project
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* Copyright (C) 2004 2005 Arnaud Cornet and Loïc Gomez
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* See the file "COPYING" for the exact licensing terms.
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*/
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#include "config.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <signal.h>
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#include <stdarg.h>
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#include <string.h>
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#include <sys/time.h>
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#include <sys/resource.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include "irc.h"
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#include "conf.h"
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#include "path_util.h"
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#include "tuple.h"
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#include "log.h"
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#include "bip.h"
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#include "line.h"
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#include "defaults.h"
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#define S_CONF "bip.conf"
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#define OIDENTD_FILENAME ".oidentd.conf"
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extern int sighup;
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extern char *conf_log_root;
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extern char *conf_log_format;
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extern int conf_log_level;
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extern char *conf_ip;
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extern unsigned short conf_port;
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extern int conf_css;
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#ifdef HAVE_LIBSSL
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extern char *conf_ssl_certfile;
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extern char *conf_client_ciphers;
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extern char *conf_client_dh_file;
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extern char *conf_server_default_ciphers;
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#endif
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extern int conf_daemonize;
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extern char *conf_pid_file;
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extern char *conf_biphome;
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extern int conf_reconn_timer;
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/* log options, for sure the trickiest :) */
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extern int conf_log;
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extern int conf_log_system;
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extern int conf_log_sync_interval;
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extern bip_t *_bip;
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extern FILE *conf_global_log_file;
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void reload_config(int i);
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void bad_quit(int i);
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void check_rlimits();
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void rlimit_cpu_reached(int i);
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void rlimit_bigfile_reached(int i);
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void conf_die(bip_t *bip, char *fmt, ...);
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int fireup(bip_t *bip, FILE *conf);
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int do_pid_stuff(void);
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static void usage(char *name)
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{
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printf(
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"Usage: %s [-f config_file] [-h] [-n]\n"
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" -f config_file: Use config_file as the configuration file\n"
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" If no config file is given %s will try to open ~/.bip/" S_CONF "\n"
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" -n: Don't daemonize, log in stderr\n"
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" -s: Bip HOME, default parent directory for client certificate,\n"
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" configuration, logs, pid, oidentd\n"
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" -v: Print version and exit\n"
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" -h: This help\n", name, name);
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exit(1);
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}
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static void version()
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{
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printf(
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"Bip IRC Proxy - " PACKAGE_VERSION "\n"
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"Copyright © Arnaud Cornet and Loïc Gomez (2004 - 2008)\n"
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"Distributed under the GNU Public License Version 2\n");
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}
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static void log_file_setup(void)
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{
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char buf[4096];
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if (conf_log_system && conf_daemonize) {
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if (conf_global_log_file && conf_global_log_file != stderr)
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fclose(conf_global_log_file);
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snprintf(buf, 4095, "%s/bip.log", conf_log_root);
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FILE *f = fopen(buf, "a");
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if (!f)
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fatal("Can't open %s: %s", buf, strerror(errno));
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conf_global_log_file = f;
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} else {
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conf_global_log_file = stderr;
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}
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}
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static pid_t daemonize(void)
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{
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switch (fork()) {
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case -1:
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fatal("Fork failed");
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break;
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case 0:
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break;
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default:
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_exit(0);
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}
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if (setsid() < 0)
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fatal("setsid() failed");
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switch (fork()) {
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case -1:
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fatal("Fork failed");
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break;
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case 0:
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break;
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default:
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_exit(0);
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}
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close(0);
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close(1);
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close(2);
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/* This better be the very last action since fatal makes use of
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* conf_global_log_file */
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return getpid();
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}
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int main(int argc, char **argv)
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{
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FILE *conf = NULL;
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char *confpath = NULL;
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int ch;
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int r, fd;
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char buf[30];
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bip_t bip;
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bip_init(&bip);
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_bip = &bip;
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conf_ip = bip_strdup("0.0.0.0");
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conf_port = 7778;
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conf_css = 0;
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signal(SIGPIPE, SIG_IGN);
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signal(SIGHUP, reload_config);
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signal(SIGINT, bad_quit);
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signal(SIGQUIT, bad_quit);
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signal(SIGTERM, bad_quit);
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signal(SIGXFSZ, rlimit_bigfile_reached);
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signal(SIGXCPU, rlimit_cpu_reached);
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conf_log_root = NULL;
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conf_log_format = bip_strdup(DEFAULT_LOG_FORMAT);
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conf_log_level = DEFAULT_LOG_LEVEL;
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conf_reconn_timer = DEFAULT_RECONN_TIMER;
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conf_daemonize = 1;
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conf_global_log_file = stderr;
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conf_pid_file = NULL;
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#ifdef HAVE_LIBSSL
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conf_ssl_certfile = NULL;
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conf_client_ciphers = NULL;
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conf_server_default_ciphers = NULL;
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conf_client_dh_file = NULL;
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#endif
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while ((ch = getopt(argc, argv, "hvnf:s:")) != -1) {
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switch (ch) {
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case 'f':
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confpath = bip_strdup(optarg);
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break;
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case 'n':
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conf_daemonize = 0;
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break;
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case 's':
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conf_biphome = bip_strdup(optarg);
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break;
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case 'v':
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version();
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exit(0);
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break;
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default:
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version();
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usage(argv[0]);
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}
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}
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umask(0027);
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check_rlimits();
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char *home = NULL; /* oidentd path searching ignores conf_biphome */
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home = getenv("HOME");
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if (!home && !conf_biphome) {
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conf_die(&bip, "no value for environment variable $HOME,"
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"use '-s' parameter");
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return 0;
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}
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if (!conf_biphome) {
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conf_biphome = bip_malloc(strlen(home) + strlen("/.bip") + 1);
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strcpy(conf_biphome, home);
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strcat(conf_biphome, "/.bip");
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}
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if (!bip.oidentdpath) {
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bip.oidentdpath = bip_malloc(strlen(conf_biphome) + 1 +
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strlen(OIDENTD_FILENAME) + 1);
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strcpy(bip.oidentdpath, conf_biphome);
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strcat(bip.oidentdpath, "/");
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strcat(bip.oidentdpath, OIDENTD_FILENAME);
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}
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if (!confpath) {
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confpath = bip_malloc(strlen(conf_biphome) + 1 +
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strlen(S_CONF) + 1);
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strcpy(confpath, conf_biphome);
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strcat(confpath, "/");
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strcat(confpath, S_CONF);
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}
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conf = fopen(confpath, "r");
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if (!conf)
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fatal("config file not found (%s)", confpath);
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r = fireup(&bip, conf);
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fclose(conf);
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if (!r)
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fatal("Not starting: error in config file.");
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if (!conf_log_root) {
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char *ap = "/logs";
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conf_log_root = bip_malloc(strlen(conf_biphome) +
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strlen(ap) + 1);
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strcpy(conf_log_root, conf_biphome);
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strcat(conf_log_root, ap);
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mylog(LOG_INFO, "Default log root: %s", conf_log_root);
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}
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if (!conf_pid_file) {
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char *pid = "/bip.pid";
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conf_pid_file = bip_malloc(strlen(conf_biphome) +
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strlen(pid) + 1);
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strcpy(conf_pid_file, conf_biphome);
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strcat(conf_pid_file, pid);
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mylog(LOG_INFO, "Default pid file: %s", conf_pid_file);
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}
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#ifdef HAVE_LIBSSL
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if (conf_css) {
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int e;
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struct stat fs;
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if (!conf_ssl_certfile) {
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conf_ssl_certfile = default_path(conf_biphome, "bip.pem",
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"SSL certificate");
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}
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assert_path_exists(conf_ssl_certfile);
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e = stat(conf_ssl_certfile, &fs);
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if (e)
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mylog(LOG_WARN, "Unable to check PEM file, stat(%s): "
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"%s", conf_ssl_certfile, strerror(errno));
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else if ((fs.st_mode & S_IROTH) | (fs.st_mode & S_IWOTH))
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mylog(LOG_ERROR, "PEM file %s should not be world "
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"readable / writable. Please fix the modes.",
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conf_ssl_certfile);
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if (conf_client_dh_file) {
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assert_path_exists(conf_client_dh_file);
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}
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}
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#endif
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check_dir(conf_log_root, 1);
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fd = do_pid_stuff();
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pid_t pid = 0;
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log_file_setup();
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if (conf_daemonize)
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pid = daemonize();
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else
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pid = getpid();
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snprintf(buf, 29, "%ld\n", (long unsigned int)pid);
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write(fd, buf, strlen(buf));
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close(fd);
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bip.listener = listen_new(conf_ip, conf_port, conf_css);
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if (!bip.listener || bip.listener->connected == CONN_ERROR)
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fatal("Could not create listening socket");
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for (;;) {
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irc_main(&bip);
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sighup = 0;
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conf = fopen(confpath, "r");
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if (!conf)
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fatal("%s config file not found", confpath);
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fireup(&bip, conf);
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fclose(conf);
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/* re-open to allow logfile rotate */
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log_file_setup();
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}
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return 1;
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}
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