ramkomd.c 11.7 KB
Newer Older
Linus Tolke Y's avatar
Linus Tolke Y committed
1
/*
2
 * $Id: ramkomd.c,v 0.43 1993/11/22 19:06:35 ceder Exp $
Linus Tolke Y's avatar
Linus Tolke Y committed
3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
 * Copyright (C) 1991  Lysator Academic Computer Association.
 *
 * This file is part of the LysKOM server.
 * 
 * LysKOM is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by 
 * the Free Software Foundation; either version 1, or (at your option) 
 * any later version.
 * 
 * LysKOM is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with LysKOM; see the file COPYING.  If not, write to
 * Lysator, c/o ISY, Linkoping University, S-581 83 Linkoping, SWEDEN,
 * or the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, 
 * MA 02139, USA.
 *
 * Please mail bug reports to bug-lyskom@lysator.liu.se. 
 */
Per Cederqvist's avatar
Per Cederqvist committed
25 26 27 28 29 30 31 32 33
/*
 * Detta {r serverns huvudprogram. Det kommer f|rhoppningsvis bli st|rre
 * {n det {r just nu...
 *
 * Created by Willf|r 31/3-90
 *
 * It has grown! /ceder
 */

34
static char *rcsid = "$Id: ramkomd.c,v 0.43 1993/11/22 19:06:35 ceder Exp $";
35 36
#include "rcs.h"
USE(rcsid);
Per Cederqvist's avatar
Per Cederqvist committed
37

38 39 40
#ifdef HAVE_LOCALE_H
#  include <locale.h>
#endif
Per Cederqvist's avatar
Per Cederqvist committed
41
#include <stdio.h>
Per Cederqvist's avatar
Per Cederqvist committed
42
#include <signal.h>
Per Cederqvist's avatar
Per Cederqvist committed
43 44 45
#ifdef HAVE_STDARG_H
#  include <stdarg.h>
#endif
46 47 48 49 50 51
#ifdef HAVE_STDLIB_H
#  include <stdlib.h>
#endif
#ifdef HAVE_STRING_H
#  include <string.h>
#endif
Per Cederqvist's avatar
Per Cederqvist committed
52
#include <sys/wait.h>
Per Cederqvist's avatar
Per Cederqvist committed
53
#include <time.h>
Per Cederqvist's avatar
Per Cederqvist committed
54
#include <unistd.h>
Per Cederqvist's avatar
Per Cederqvist committed
55 56 57 58 59 60 61
#include <setjmp.h>
#if defined(HAVE_SYS_PARAM_H) && !defined(HAVE_GETCWD)
# include <sys/param.h>
#endif
#if defined(HAVE_GETCWD)
#  include <errno.h>
#endif
Per Cederqvist's avatar
Per Cederqvist committed
62
#include <sys/types.h>
63
#include <sys/socket.h>
Per Cederqvist's avatar
Per Cederqvist committed
64

Per Cederqvist's avatar
Per Cederqvist committed
65
#include "exp.h"
66
#include "s-string.h"
Per Cederqvist's avatar
Per Cederqvist committed
67
#include "misc-types.h"
68
#include "kom-types.h"
Per Cederqvist's avatar
Per Cederqvist committed
69 70 71 72
#include "com.h"
#include "connections.h"
#include "internal-connections.h"
#include "kom-errno.h"
Per Cederqvist's avatar
Per Cederqvist committed
73
#include "isc-malloc.h"
74
#include "isc-interface.h"
Per Cederqvist's avatar
Per Cederqvist committed
75
#include "config.h"
Per Cederqvist's avatar
Per Cederqvist committed
76
#include "cache.h"
Per Cederqvist's avatar
Per Cederqvist committed
77 78
#include "string-malloc.h"
#include "lyskomd.h"
Per Cederqvist's avatar
Per Cederqvist committed
79
#include "log.h"
Per Cederqvist's avatar
Per Cederqvist committed
80 81 82
#include "internal-services.h"
#include "server/smalloc.h"
#include "kom-memory.h"
Per Cederqvist's avatar
Per Cederqvist committed
83 84

Kom_err		  kom_errno;
Per Cederqvist's avatar
Per Cederqvist committed
85
unsigned long	  err_stat;
Per Cederqvist's avatar
Per Cederqvist committed
86 87 88 89 90 91 92 93
Bool		  send_async_messages		= TRUE;


#ifdef DEBUG
int	buglevel = 0;
Bool	never_save = FALSE;
#endif

94 95 96
#ifdef LOGACCESSES
char *logaccess_file = NULL;
#endif
Per Cederqvist's avatar
Per Cederqvist committed
97

98 99 100 101 102 103
EXPORT char datafilename[BUFSIZ];      /* Full pathname to the database file */
EXPORT char backupfilename[BUFSIZ];    /* Full pathname to the backup file */
EXPORT char textfilename[BUFSIZ];      /* Full pathname to the text file. */
EXPORT char statisticfile[BUFSIZ];     /* Dito to statistics file. */
EXPORT char pidfile[BUFSIZ];	       /* Dito pid-file. */
INTERNAL char memusefile[BUFSIZ];      /* Memory usage file. */
Per Cederqvist's avatar
Per Cederqvist committed
104

105 106
static char ip_client_port[80];        /* Port to listen to for clients */
static char ip_mux_port[80];           /* Port to listen to for mux:es */
Per Cederqvist's avatar
Per Cederqvist committed
107

108 109 110 111 112
int num_ip_client_port=0;	/* Numeric representation of the above. */
int num_ip_mux_port=0;		/*               -"-                    */

static IscSession *listen_client = NULL;      /* ISC listen identifier */
static IscSession *listen_mux    = NULL;      /*          -"-          */
Per Cederqvist's avatar
Per Cederqvist committed
113 114


115 116 117
static void 
dump_exit_statistics(void);

Per Cederqvist's avatar
Per Cederqvist committed
118 119 120
static void
server_init( char * client_port, char * mux_port)
{
Per Cederqvist's avatar
Per Cederqvist committed
121
    IscConfig config;
122
    IscAddress *isc_adr = NULL;
Per Cederqvist's avatar
Per Cederqvist committed
123
    
Per Cederqvist's avatar
Per Cederqvist committed
124 125 126
    /*
    ** Setup some parameters here
    */
Per Cederqvist's avatar
Per Cederqvist committed
127 128 129 130 131
    config.version = 1005;
    config.master.version = 1001;
    config.master.memfn.alloc = &isc_malloc_wrapper;
    config.master.memfn.realloc = &isc_realloc_wrapper;
    config.master.memfn.free = &isc_free_wrapper;
132
    config.master.abortfn = NULL; /* Use default abort function. */
Per Cederqvist's avatar
Per Cederqvist committed
133
    config.session.version = 1001;
134
    config.session.max.msgsize = -1; /* Use default sizes. */
Per Cederqvist's avatar
Per Cederqvist committed
135 136 137 138
    config.session.max.queuedsize = -1;
    config.session.max.dequeuelen = -1;
    config.session.max.openretries = -1;
    config.session.max.backlog = -1;
Per Cederqvist's avatar
Per Cederqvist committed
139

140
    kom_server_mcb  = isc_initialize(&config);
Per Cederqvist's avatar
Per Cederqvist committed
141
    if ( kom_server_mcb == NULL )
Per Cederqvist's avatar
Per Cederqvist committed
142 143 144 145 146
	restart_kom("server_init: can't isc_initialize()\n");

    listen_client = isc_listentcp(kom_server_mcb, NULL, client_port);
    if (listen_client == NULL)
        restart_kom("server_init: can't isc_listentcp(CLIENT)\n");
Per Cederqvist's avatar
Per Cederqvist committed
147

148 149 150 151 152 153 154 155
    isc_adr = isc_getladdress (listen_client);
    if (isc_adr == NULL)
	restart_kom("server_init(): can't isc_getladdress (listen_client)\n");

    num_ip_client_port = isc_getportnum (isc_adr);
    isc_freeaddress (isc_adr);
    
    listen_mux = isc_listentcp (kom_server_mcb, NULL, mux_port);
Per Cederqvist's avatar
Per Cederqvist committed
156 157
    if (listen_mux == NULL)
        restart_kom("server_init: can't isc_listentcp(MUX)\n");
158 159 160 161

    isc_adr = isc_getladdress (listen_mux);
    if (isc_adr == NULL)
	restart_kom("server_init(): can't isc_getladdress (listen_mux)\n");
Per Cederqvist's avatar
Per Cederqvist committed
162
    
163 164 165 166 167
    num_ip_mux_port = isc_getportnum (isc_adr);
    isc_freeaddress (isc_adr);

    log("Listening for clients on %d and muxes on %d.\n",
	num_ip_client_port, num_ip_mux_port);
Per Cederqvist's avatar
Per Cederqvist committed
168 169 170 171 172 173 174 175 176 177

    /*
     * Ignore SIGPIPE, which the server gets if it tries to write to a
     * socket and the client has died. The server will anyhow handle
     * this situation correct.
     */
    signal(SIGPIPE, SIG_IGN);
}

static void
178
init_data_base(const char *dir_base)
Per Cederqvist's avatar
Per Cederqvist committed
179 180 181 182
{
    String a = EMPTY_STRING, b = EMPTY_STRING, c = EMPTY_STRING,
	    d = EMPTY_STRING;

183 184
    if (dir_base == NULL)
      dir_base = DEFAULT_DBASE_DIR;
Per Cederqvist's avatar
Per Cederqvist committed
185
    
186 187 188 189 190 191
    sprintf(datafilename,   "%s/%s", dir_base, DATAFILE_NAME);
    sprintf(backupfilename, "%s/%s", dir_base, BACKUPFILE_NAME);
    sprintf(textfilename, "%s/%s", dir_base, TEXTFILE_NAME);
    sprintf(statisticfile, "%s/%s", dir_base, STATISTIC_NAME);
    sprintf(pidfile, "%s/%s", dir_base, PID_NAME);
    sprintf(memusefile, "%s/%s", dir_base, MEMUSE_NAME);
Per Cederqvist's avatar
Per Cederqvist committed
192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214

    log("Database = %s\n",  datafilename);
    log("Backup = %s\n", backupfilename);
    
    if ( init_cache() == FAILURE )
    {
	log ( "Setting up first four conferences.\n");

	if ( s_crea_str(&a, "Presentation (av nya) m|ten") != OK
	    || s_crea_str(&b, "Presentation (av nya) medlemmar") != OK
	    || s_crea_str(&c, "Lappar (p}) d|rren") != OK
	    || s_crea_str(&d, "Nyheter om LysKOM") != OK)
	{
	    restart_kom("init_data_base: can't create strings\n");
	}
	
	if ( ! (   do_create_conf(a, 0, 0, 0, NULL_CONF_TYPE)
		&& do_create_conf(b, 0, 0, 0, NULL_CONF_TYPE)
		&& do_create_conf(c, 0, 0, 0, NULL_CONF_TYPE)
		&& do_create_conf(d, 0, 0, 0, NULL_CONF_TYPE)))
	{
	    restart_kom("init_data_base: Kan ej skapa m|ten\n");
	}
215 216 217 218 219

	s_clear(&a);
	s_clear(&b);
	s_clear(&c);
	s_clear(&d);
Per Cederqvist's avatar
Per Cederqvist committed
220 221 222
    }
}

Per Cederqvist's avatar
Per Cederqvist committed
223
static void
Per Cederqvist's avatar
Per Cederqvist committed
224
sighandler_hup (int sig)
Per Cederqvist's avatar
Per Cederqvist committed
225 226 227 228 229
{
    log ("Signal HUP received. Shutting down server.\n");
    go_and_die = TRUE;
}

Per Cederqvist's avatar
Per Cederqvist committed
230
static void
Per Cederqvist's avatar
Per Cederqvist committed
231
sighandler_quit (int sig)
Per Cederqvist's avatar
Per Cederqvist committed
232 233 234 235 236 237 238
{
    log ("Signal QUIT received - syncing...\n");
    cache_sync_all();
    log ("Dumping core now.\n");
    abort();
}

Per Cederqvist's avatar
Per Cederqvist committed
239
static void
Per Cederqvist's avatar
Per Cederqvist committed
240
sighandler_usr1 (int sig)
Per Cederqvist's avatar
Per Cederqvist committed
241
{
242
    signal(SIGUSR1, sighandler_usr1);
Per Cederqvist's avatar
Per Cederqvist committed
243 244 245
    do_sync_db = TRUE;
}

Per Cederqvist's avatar
Per Cederqvist committed
246
static void
Per Cederqvist's avatar
Per Cederqvist committed
247
sighandler_usr2 (int sig)
Per Cederqvist's avatar
Per Cederqvist committed
248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267
{
    int		  child;

    log ("Signal USR2 received - will dump core now.  (Check that child dies.)\n");
    if ((child = fork()) == 0)
    {
	abort();
	log ("Abort() failed!!!");
	exit(1);
    }
    else if (child < 0)
    {
	log ("Couldn't fork.\n");
    }
    else
    {
	wait (NULL);
    }
}

Per Cederqvist's avatar
Per Cederqvist committed
268
static void
Per Cederqvist's avatar
Per Cederqvist committed
269 270 271 272 273 274 275
save_pid(void)
{
    FILE *fp;

    if ( (fp = fopen(pidfile, "w")) == NULL )
	return;

276
    fprintf(fp, "%d\n", getpid());
Per Cederqvist's avatar
Per Cederqvist committed
277 278 279
    fclose(fp);
}

Per Cederqvist's avatar
Per Cederqvist committed
280 281 282
/* Stop complaint from gcc 2.0 about "no previous prototype for `main'". */
int main(int argc, char **argv);

Per Cederqvist's avatar
Per Cederqvist committed
283 284 285 286 287
int
main (int    argc,
      char **argv)
{
    int i;
288
    char *dbase_dir = NULL;
289
    char *use_locale = NULL;
Per Cederqvist's avatar
Per Cederqvist committed
290

291 292 293 294
    log("*** Version %d (process %d) started.\n",
#include "version.incl"
	, getpid());

Per Cederqvist's avatar
Per Cederqvist committed
295 296 297 298
#if defined (HAVE_SYSCONF)
    MAX_NO_OF_CONNECTIONS = sysconf(_SC_OPEN_MAX) - PROTECTED_FDS;
#else
# ifdef HAVE_GETDTABLESIZE
299
    MAX_NO_OF_CONNECTIONS = getdtablesize() - PROTECTED_FDS;
Per Cederqvist's avatar
Per Cederqvist committed
300
# endif
301 302 303 304
#endif
    /* If we don't have getdtablesize MAX_NO_OF_CONNECTIONS is
       set at compile time. */

Per Cederqvist's avatar
Per Cederqvist committed
305 306 307 308
#ifdef ENCRYPT_PASSWORDS
    srand(time(NULL) + getpid());
#endif
    
Per Cederqvist's avatar
Per Cederqvist committed
309
    s_set_storage_management(string_malloc, string_realloc, string_free);
Per Cederqvist's avatar
Per Cederqvist committed
310

311

Per Cederqvist's avatar
Per Cederqvist committed
312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341
    strcpy(ip_client_port, DEFAULT_CLIENT_SERVICE);
    strcpy(ip_mux_port,    DEFAULT_MUX_SERVICE);

    for (i = 1; i < argc && argv[i][0] == '-'; i++)
	switch (argv[i][1])
	{
	case 'd':
	    buglevel++;
	    break;

	case 'q':
	    never_save = TRUE;
	    break;
	    
	case 'D':		/* Database directory */
	    dbase_dir = argv[i]+2;
	    break;

	case 'p':		/* TCP/IP port number for clients */
	    strcpy(ip_client_port, argv[i]+2);
	    break;

	case 'P':		/* TCP/IP port number for MUXes */
	    strcpy(ip_mux_port, argv[i]+2);
	    break;

	case 'a':
	    send_async_messages = FALSE;
	    break;

342 343 344 345
	case 'l':
	    use_locale = argv[i]+2;
	    break;

346 347 348 349 350 351
#ifdef LOGACCESSES
	case 'L':
	    logaccess_file = argv[i] + 2;
	    break;
#endif

Per Cederqvist's avatar
Per Cederqvist committed
352
	default:
353
#ifdef LOGACCESSES
Per Cederqvist's avatar
Per Cederqvist committed
354 355 356
	    restart_kom("usage: %s [-d] [-q] [-Ddir] [-pport] [-Pmuxport] [-a] [-llocale] [-Ldb_trace_file]\n", argv[0]);
#else
	    restart_kom("usage: %s [-d] [-q] [-Ddir] [-pport] [-Pmuxport] [-a] [-llocale]\n", argv[0]);
357
#endif
Per Cederqvist's avatar
Per Cederqvist committed
358 359 360 361
	}
    
    if (i < argc)
    {
Per Cederqvist's avatar
Per Cederqvist committed
362
	restart_kom("usage: %s [-d] [-q] [-Ddir] [-pport] [-Pmuxport] [-a] [-llocale]\n", argv[0]);
Per Cederqvist's avatar
Per Cederqvist committed
363 364
    }

365 366 367 368 369 370 371 372 373 374 375 376 377 378 379
#ifdef HAVE_LOCALE_H
    if (setlocale(LC_CTYPE, use_locale) == NULL)
    {
	fprintf(stderr, "setlocale: ");
        perror(use_locale);
	exit(1);
    }
#else
    if (use_locale != NULL)
    {
	fprintf(stderr, "locale not supported in your environment.\n");
	exit(1);
    }
#endif

Per Cederqvist's avatar
Per Cederqvist committed
380 381 382 383 384 385 386 387
    signal(SIGHUP, sighandler_hup);
    signal(SIGQUIT, sighandler_quit);
    signal(SIGUSR1, sighandler_usr1);
    signal(SIGUSR2, sighandler_usr2);
  
    server_init(ip_client_port, ip_mux_port);
    init_data_base(dbase_dir);
    save_pid();
Per Cederqvist's avatar
Per Cederqvist committed
388

Per Cederqvist's avatar
Per Cederqvist committed
389
    toploop();
Per Cederqvist's avatar
Per Cederqvist committed
390 391

    logout_all_clients();
392
    isc_shutdown(kom_server_mcb);
Per Cederqvist's avatar
Per Cederqvist committed
393
    cache_sync_all();
Per Cederqvist's avatar
Per Cederqvist committed
394

395 396
    dump_exit_statistics();

Per Cederqvist's avatar
Per Cederqvist committed
397
    log("%s terminated normally.\n", argv[0]);
398 399 400 401 402 403 404 405 406 407 408 409
    
    return 0;
}

static void 
dump_exit_statistics(void)
{
    FILE *stat_file;
    time_t now;

    time(&now);
    stat_file = fopen(memusefile, "a");
Per Cederqvist's avatar
Per Cederqvist committed
410 411 412 413

    if ( stat_file == NULL )
	restart_kom("Can't open file to save memory usage to.\n");

414 415
    fprintf(stat_file, "\nLysKOM Server going down at %s\n", ctime(&now));

416 417 418 419 420
    dump_cache_stats (stat_file);

    free_all_tmp();
    free_all_cache();

Per Cederqvist's avatar
Per Cederqvist committed
421 422
    dump_smalloc_counts(stat_file);
    dump_alloc_counts(stat_file);
423
    dump_cache_mem_usage(stat_file);
Per Cederqvist's avatar
Per Cederqvist committed
424
    dump_string_alloc_counts(stat_file);
425
    dump_allocated_connections(stat_file);
426
    dump_isc_alloc_counts(stat_file);
Per Cederqvist's avatar
Per Cederqvist committed
427
    fclose (stat_file);
Per Cederqvist's avatar
Per Cederqvist committed
428
}
429
    
Per Cederqvist's avatar
Per Cederqvist committed
430
void
Per Cederqvist's avatar
Per Cederqvist committed
431
#if defined(HAVE_VFPRINTF) && defined(HAVE_STDARG_H)
Per Cederqvist's avatar
Per Cederqvist committed
432
restart_kom(const char * format, ...)
433 434 435 436 437 438
#else
restart_kom(format,
	    a, b, c, d, e, f, g)
     const char *format;
     int a, b, c, d, e, f, g;
#endif
Per Cederqvist's avatar
Per Cederqvist committed
439
{
Per Cederqvist's avatar
Per Cederqvist committed
440
#if defined(HAVE_VFPRINTF) && defined(HAVE_STDARG_H)
Per Cederqvist's avatar
Per Cederqvist committed
441
    va_list AP;
442
#endif
Per Cederqvist's avatar
Per Cederqvist committed
443 444 445
#if defined(HAVE_GETCWD)
    char pathname[1026];
#else /* !defined(HAVE_GETCWD) */
446
    char *getwd(char *); /* +++ should be in sys/param.h */
Per Cederqvist's avatar
Per Cederqvist committed
447 448 449 450 451 452
# if defined(MAXPATHLEN)
    char pathname[MAXPATHLEN];
# else
    char pathname[1024];
# endif /* !defined(MAXPATHLEN) */
#endif /* !defined(HAVE_GETCWD) */
Per Cederqvist's avatar
Per Cederqvist committed
453

Per Cederqvist's avatar
Per Cederqvist committed
454
#if defined(HAVE_VFPRINTF) && defined(HAVE_STDARG_H)
Per Cederqvist's avatar
Per Cederqvist committed
455 456 457
    va_start(AP, format);
    logv(format, AP);
    va_end(AP);
458 459 460
#else
    log(format, a, b, c, d, e, f, g);
#endif
Per Cederqvist's avatar
Per Cederqvist committed
461 462

    log("Previous message is fatal. Will dump core now.\n");
463

Per Cederqvist's avatar
Per Cederqvist committed
464 465 466 467 468 469 470
#ifdef HAVE_GETCWD
    /* getcwd is POSIX, so try that first. */
    if (getcwd(pathname, 1026) == NULL)
	log("getcwd failed: errno %d\n", errno);
    else
	log("Search for the core in %s\n", pathname);
#else
471 472 473 474
    if ( getwd(pathname) == NULL )
	log("getwd failed: %s\n", pathname);
    else
	log("Search for the core in %s\n", pathname);
Per Cederqvist's avatar
Per Cederqvist committed
475
#endif
476
    
Per Cederqvist's avatar
Per Cederqvist committed
477 478
    abort();
}