Import Upstream version 1.0pre7
This commit is contained in:
Guus Sliepen
commit
ed8d36a434
154 changed files with 53905 additions and 0 deletions
400
src/tincd.c
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400
src/tincd.c
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/*
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tincd.c -- the main file for tincd
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Copyright (C) 1998-2002 Ivo Timmermans <itimmermans@bigfoot.com>
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2000-2002 Guus Sliepen <guus@sliepen.warande.net>
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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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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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$Id: tincd.c,v 1.10.4.58 2002/03/11 11:23:04 guus Exp $
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*/
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#include "config.h"
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#include <errno.h>
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#include <fcntl.h>
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#include <getopt.h>
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#include <signal.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <syslog.h>
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#include <unistd.h>
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#include <signal.h>
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#include <string.h>
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#include <termios.h>
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#ifdef HAVE_SYS_IOCTL_H
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# include <sys/ioctl.h>
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#endif
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#include <openssl/rand.h>
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#include <openssl/rsa.h>
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#include <openssl/pem.h>
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#include <openssl/evp.h>
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#include <utils.h>
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#include <xalloc.h>
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#include "conf.h"
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#include "net.h"
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#include "netutl.h"
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#include "process.h"
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#include "protocol.h"
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#include "subnet.h"
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#include "system.h"
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/* The name this program was run with. */
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char *program_name;
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/* If nonzero, display usage information and exit. */
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int show_help;
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/* If nonzero, print the version on standard output and exit. */
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int show_version;
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/* If nonzero, it will attempt to kill a running tincd and exit. */
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int kill_tincd = 0;
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/* If nonzero, generate public/private keypair for this host/net. */
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int generate_keys = 0;
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/* If nonzero, use null ciphers and skip all key exchanges. */
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int bypass_security = 0;
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char *identname; /* program name for syslog */
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char *pidfilename; /* pid file location */
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char **g_argv; /* a copy of the cmdline arguments */
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char **environment; /* A pointer to the environment on
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startup */
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static struct option const long_options[] =
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{
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{ "config", required_argument, NULL, 'c' },
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{ "kill", optional_argument, NULL, 'k' },
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{ "net", required_argument, NULL, 'n' },
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{ "help", no_argument, &show_help, 1 },
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{ "version", no_argument, &show_version, 1 },
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{ "no-detach", no_argument, &do_detach, 0 },
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{ "generate-keys", optional_argument, NULL, 'K'},
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{ "debug", optional_argument, NULL, 'd'},
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{ "bypass-security", no_argument, &bypass_security, 1 },
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{ NULL, 0, NULL, 0 }
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};
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static void
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usage(int status)
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{
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if(status != 0)
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fprintf(stderr, _("Try `%s --help\' for more information.\n"), program_name);
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else
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{
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printf(_("Usage: %s [option]...\n\n"), program_name);
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printf(_(" -c, --config=DIR Read configuration options from DIR.\n"
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" -D, --no-detach Don't fork and detach.\n"
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" -d, --debug[=LEVEL] Increase debug level or set it to LEVEL.\n"
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" -k, --kill[=SIGNAL] Attempt to kill a running tincd and exit.\n"
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" -n, --net=NETNAME Connect to net NETNAME.\n"));
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printf(_(" -K, --generate-keys[=BITS] Generate public/private RSA keypair.\n"
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" --help Display this help and exit.\n"
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" --version Output version information and exit.\n\n"));
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printf(_("Report bugs to tinc@nl.linux.org.\n"));
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}
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exit(status);
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}
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void
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parse_options(int argc, char **argv, char **envp)
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{
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int r;
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int option_index = 0;
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while((r = getopt_long(argc, argv, "c:Dd::k::n:K::", long_options, &option_index)) != EOF)
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{
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switch(r)
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{
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case 0: /* long option */
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break;
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case 'c': /* config file */
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confbase = xmalloc(strlen(optarg)+1);
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strcpy(confbase, optarg);
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break;
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case 'D': /* no detach */
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do_detach = 0;
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break;
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case 'd': /* inc debug level */
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if(optarg)
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debug_lvl = atoi(optarg);
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else
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debug_lvl++;
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break;
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case 'k': /* kill old tincds */
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if(optarg)
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{
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if(!strcasecmp(optarg, "HUP"))
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kill_tincd = SIGHUP;
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else if(!strcasecmp(optarg, "TERM"))
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kill_tincd = SIGTERM;
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else if(!strcasecmp(optarg, "KILL"))
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kill_tincd = SIGKILL;
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else if(!strcasecmp(optarg, "USR1"))
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kill_tincd = SIGUSR1;
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else if(!strcasecmp(optarg, "USR2"))
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kill_tincd = SIGUSR2;
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else if(!strcasecmp(optarg, "WINCH"))
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kill_tincd = SIGWINCH;
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else if(!strcasecmp(optarg, "INT"))
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kill_tincd = SIGINT;
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else if(!strcasecmp(optarg, "ALRM"))
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kill_tincd = SIGALRM;
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else
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{
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kill_tincd = atoi(optarg);
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if(!kill_tincd)
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{
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fprintf(stderr, _("Invalid argument `%s'; SIGNAL must be a number or one of HUP, TERM, KILL, USR1, USR2, WINCH, INT or ALRM.\n"), optarg);
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usage(1);
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}
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}
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}
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else
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kill_tincd = SIGTERM;
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break;
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case 'n': /* net name given */
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netname = xmalloc(strlen(optarg)+1);
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strcpy(netname, optarg);
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break;
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case 'K': /* generate public/private keypair */
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if(optarg)
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{
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generate_keys = atoi(optarg);
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if(generate_keys < 512)
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{
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fprintf(stderr, _("Invalid argument `%s'; BITS must be a number equal to or greater than 512.\n"),
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optarg);
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usage(1);
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}
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generate_keys &= ~7; /* Round it to bytes */
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}
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else
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generate_keys = 1024;
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break;
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case '?':
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usage(1);
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default:
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break;
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}
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}
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}
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/* This function prettyprints the key generation process */
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void indicator(int a, int b, void *p)
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{
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switch(a)
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{
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case 0:
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fprintf(stderr, ".");
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break;
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case 1:
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fprintf(stderr, "+");
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break;
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case 2:
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fprintf(stderr, "-");
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break;
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case 3:
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switch(b)
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{
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case 0:
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fprintf(stderr, " p\n");
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break;
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case 1:
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fprintf(stderr, " q\n");
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break;
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default:
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fprintf(stderr, "?");
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}
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break;
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default:
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fprintf(stderr, "?");
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}
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}
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/*
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Generate a public/private RSA keypair, and ask for a file to store
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them in.
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*/
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int keygen(int bits)
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{
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RSA *rsa_key;
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FILE *f;
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char *name = NULL;
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char *filename;
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fprintf(stderr, _("Generating %d bits keys:\n"), bits);
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rsa_key = RSA_generate_key(bits, 0xFFFF, indicator, NULL);
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if(!rsa_key)
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{
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fprintf(stderr, _("Error during key generation!\n"));
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return -1;
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}
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else
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fprintf(stderr, _("Done.\n"));
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get_config_string(lookup_config(config_tree, "Name"), &name);
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if(name)
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asprintf(&filename, "%s/hosts/%s", confbase, name);
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else
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asprintf(&filename, "%s/rsa_key.pub", confbase);
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if((f = ask_and_safe_open(filename, _("public RSA key"), "a")) == NULL)
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return -1;
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if(ftell(f))
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fprintf(stderr, _("Appending key to existing contents.\nMake sure only one key is stored in the file.\n"));
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PEM_write_RSAPublicKey(f, rsa_key);
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fclose(f);
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free(filename);
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asprintf(&filename, "%s/rsa_key.priv", confbase);
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if((f = ask_and_safe_open(filename, _("private RSA key"), "a")) == NULL)
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return -1;
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if(ftell(f))
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fprintf(stderr, _("Appending key to existing contents.\nMake sure only one key is stored in the file.\n"));
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PEM_write_RSAPrivateKey(f, rsa_key, NULL, NULL, 0, NULL, NULL);
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fclose(f);
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free(filename);
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return 0;
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}
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/*
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Set all files and paths according to netname
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*/
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void make_names(void)
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{
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if(netname)
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{
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if(!pidfilename)
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asprintf(&pidfilename, LOCALSTATEDIR "/run/tinc.%s.pid", netname);
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if(!confbase)
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asprintf(&confbase, "%s/tinc/%s", CONFDIR, netname);
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else
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syslog(LOG_INFO, _("Both netname and configuration directory given, using the latter..."));
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if(!identname)
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asprintf(&identname, "tinc.%s", netname);
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}
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else
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{
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if(!pidfilename)
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pidfilename = LOCALSTATEDIR "/run/tinc.pid";
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if(!confbase)
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asprintf(&confbase, "%s/tinc", CONFDIR);
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if(!identname)
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identname = "tinc";
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}
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}
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int
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main(int argc, char **argv, char **envp)
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{
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program_name = argv[0];
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setlocale (LC_ALL, "");
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bindtextdomain (PACKAGE, LOCALEDIR);
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textdomain (PACKAGE);
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environment = envp;
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parse_options(argc, argv, envp);
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if(show_version)
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{
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printf(_("%s version %s (built %s %s, protocol %d)\n"), PACKAGE, VERSION, __DATE__, __TIME__, PROT_CURRENT);
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printf(_("Copyright (C) 1998-2002 Ivo Timmermans, Guus Sliepen and others.\n"
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"See the AUTHORS file for a complete list.\n\n"
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"tinc comes with ABSOLUTELY NO WARRANTY. This is free software,\n"
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"and you are welcome to redistribute it under certain conditions;\n"
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"see the file COPYING for details.\n"));
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return 0;
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}
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if(show_help)
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usage(0);
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#ifdef HAVE_SOLARIS
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openlog("tinc", LOG_CONS, LOG_DAEMON); /* Catch all syslog() calls issued before detaching */
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#else
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openlog("tinc", LOG_PERROR, LOG_DAEMON); /* Catch all syslog() calls issued before detaching */
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#endif
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g_argv = argv;
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make_names();
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init_configuration(&config_tree);
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/* Slllluuuuuuurrrrp! */
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cp
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RAND_load_file("/dev/urandom", 1024);
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#ifdef HAVE_SSLEAY_ADD_ALL_ALGORITHMS
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SSLeay_add_all_algorithms();
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#else
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OpenSSL_add_all_algorithms();
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#endif
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cp
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if(generate_keys)
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{
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read_server_config();
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exit(keygen(generate_keys));
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}
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if(kill_tincd)
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exit(kill_other(kill_tincd));
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if(read_server_config())
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exit(1);
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cp
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if(detach())
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exit(0);
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cp
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for(;;)
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{
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if(!setup_network_connections())
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{
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main_loop();
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cleanup_and_exit(1);
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}
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syslog(LOG_ERR, _("Unrecoverable error"));
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cp_trace();
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if(do_detach)
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{
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syslog(LOG_NOTICE, _("Restarting in %d seconds!"), maxtimeout);
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sleep(maxtimeout);
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}
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else
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{
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syslog(LOG_ERR, _("Not restarting."));
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exit(1);
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}
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}
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}
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