ramkomd.c 10.3 KB
Newer Older
Linus Tolke Y's avatar
Linus Tolke Y committed
1
/*
2
 * $Id: ramkomd.c,v 0.29 1992/05/25 21:13:31 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 0.29 1992/05/25 21:13:31 ceder Exp $";
Per Cederqvist's avatar
Per Cederqvist committed
35

Per Cederqvist's avatar
Per Cederqvist committed
36

37
#include <m-config.h>
38
#include "getopt.h"
Per Cederqvist's avatar
Per Cederqvist committed
39 40
#include <stdlib.h>
#include <signal.h>
Per Cederqvist's avatar
Per Cederqvist committed
41
#include <stdio.h>
Per Cederqvist's avatar
Per Cederqvist committed
42 43 44
#include <ctype.h>
#include <netdb.h>
#include <string.h>
45 46 47 48
#include <locale.h>		/* Not all machines have locale.h - for those
				   that don't have it we supply an empty
				   <locale.h>. gcc -M tries to include files,
				   even if they are #ifdef'd out. */
Per Cederqvist's avatar
Per Cederqvist committed
49 50
#include <sys/types.h>
#include <sys/wait.h>
51
#include <sys/param.h>
Per Cederqvist's avatar
Per Cederqvist committed
52 53
#include <time.h>
#include <sys/resource.h>
Per Cederqvist's avatar
Per Cederqvist committed
54 55
#include <netinet/in.h>
#include <unistd.h>
Per Cederqvist's avatar
Per Cederqvist committed
56 57
#include <errno.h>

Per Cederqvist's avatar
Per Cederqvist committed
58
#include "s-string.h"
Per Cederqvist's avatar
Per Cederqvist committed
59
#include <kom-types.h>
Per Cederqvist's avatar
Per Cederqvist committed
60
#include "string-malloc.h"
Per Cederqvist's avatar
Per Cederqvist committed
61
#include "isc-malloc.h"
Per Cederqvist's avatar
Per Cederqvist committed
62 63 64
#include <kom-errno.h>
#include "internal-services.h"
#include "lyskomd.h"
65
#include "isc-interface.h"
66
#include <server/smalloc.h>
Per Cederqvist's avatar
Per Cederqvist committed
67 68 69 70 71
#include "cache.h"
#include "log.h"
#include "com.h"
#include "connections.h"
#include "config.h"
Per Cederqvist's avatar
Per Cederqvist committed
72 73
#include "exp.h"
#include "memory.h"
74
#include "internal-connections.h"
Per Cederqvist's avatar
Per Cederqvist committed
75 76 77 78 79 80 81 82 83 84 85 86 87

Kom_err		  kom_errno;
u_long		  err_stat;
Bool		  send_async_messages		= TRUE;


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



88 89 90 91 92 93
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
94

95 96
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
97

98 99 100 101 102
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
103 104 105 106


static char *dbase_dir = NULL;  /* Directory where database resides */

107 108 109
static void 
dump_exit_statistics(void);

Per Cederqvist's avatar
Per Cederqvist committed
110 111 112
static void
server_init( char * client_port, char * mux_port)
{
Per Cederqvist's avatar
Per Cederqvist committed
113
    IscConfig config;
114
    IscAddress *isc_adr = NULL;
Per Cederqvist's avatar
Per Cederqvist committed
115
    
Per Cederqvist's avatar
Per Cederqvist committed
116 117 118
    /*
    ** Setup some parameters here
    */
Per Cederqvist's avatar
Per Cederqvist committed
119 120 121 122 123
    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;
124
    config.master.abortfn = NULL; /* Use default abort function. */
Per Cederqvist's avatar
Per Cederqvist committed
125
    config.session.version = 1001;
126
    config.session.max.msgsize = -1; /* Use default sizes. */
Per Cederqvist's avatar
Per Cederqvist committed
127 128 129 130
    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
131

132
    kom_server_mcb  = isc_initialize(&config);
Per Cederqvist's avatar
Per Cederqvist committed
133
    if ( kom_server_mcb == NULL )
Per Cederqvist's avatar
Per Cederqvist committed
134 135 136 137 138
	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
139

140 141 142 143 144 145 146 147
    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
148 149
    if (listen_mux == NULL)
        restart_kom("server_init: can't isc_listentcp(MUX)\n");
150 151 152 153

    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
154
    
155 156 157 158 159
    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
160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182

    /*
     * 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
init_data_base(const char *dbase_dir)
{
    String a = EMPTY_STRING, b = EMPTY_STRING, c = EMPTY_STRING,
	    d = EMPTY_STRING;

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

    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");
	}
207 208 209 210 211

	s_clear(&a);
	s_clear(&b);
	s_clear(&c);
	s_clear(&d);
Per Cederqvist's avatar
Per Cederqvist committed
212 213 214
    }
}

Per Cederqvist's avatar
Per Cederqvist committed
215
static void
Per Cederqvist's avatar
Per Cederqvist committed
216
sighandler_hup (int sig)
Per Cederqvist's avatar
Per Cederqvist committed
217 218 219 220 221
{
    log ("Signal HUP received. Shutting down server.\n");
    go_and_die = TRUE;
}

Per Cederqvist's avatar
Per Cederqvist committed
222
static void
Per Cederqvist's avatar
Per Cederqvist committed
223
sighandler_quit (int sig)
Per Cederqvist's avatar
Per Cederqvist committed
224 225 226 227 228 229 230
{
    log ("Signal QUIT received - syncing...\n");
    cache_sync_all();
    log ("Dumping core now.\n");
    abort();
}

Per Cederqvist's avatar
Per Cederqvist committed
231
static void
Per Cederqvist's avatar
Per Cederqvist committed
232
sighandler_usr1 (int sig)
Per Cederqvist's avatar
Per Cederqvist committed
233 234 235 236
{
    do_sync_db = TRUE;
}

Per Cederqvist's avatar
Per Cederqvist committed
237
static void
Per Cederqvist's avatar
Per Cederqvist committed
238
sighandler_usr2 (int sig)
Per Cederqvist's avatar
Per Cederqvist committed
239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259
{
    int		  child;
    extern int	  fork(void);

    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
260
static void
Per Cederqvist's avatar
Per Cederqvist committed
261 262 263 264 265 266 267 268 269 270 271
save_pid(void)
{
    FILE *fp;

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

    fprintf(fp, "%d", getpid());
    fclose(fp);
}

Per Cederqvist's avatar
Per Cederqvist committed
272 273 274
/* 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
275 276 277 278 279 280
int
main (int    argc,
      char **argv)
{
    int i;

281
#ifdef HAVE_LOCALE
282 283 284 285 286
    if (setlocale(LC_CTYPE, "iso_8859_1") == NULL)
    {
        perror("setlocale");
	exit(1);
    }
287 288
#endif

289 290 291 292 293 294
#ifdef HAVE_GETDTABLESIZE
    MAX_NO_OF_CONNECTIONS = getdtablesize() - PROTECTED_FDS;
#endif
    /* If we don't have getdtablesize MAX_NO_OF_CONNECTIONS is
       set at compile time. */

Per Cederqvist's avatar
Per Cederqvist committed
295 296 297 298
#ifdef ENCRYPT_PASSWORDS
    srand(time(NULL) + getpid());
#endif
    
Per Cederqvist's avatar
Per Cederqvist committed
299
    s_set_storage_management(string_malloc, string_realloc, string_free);
Per Cederqvist's avatar
Per Cederqvist committed
300

301

Per Cederqvist's avatar
Per Cederqvist committed
302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332
    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;

	default:
Per Cederqvist's avatar
Per Cederqvist committed
333 334
	    restart_kom("usage: %s [-d] [-q] [-Ddir] [-pport] [-Pmuxport]"
			" [-a]\n", argv[0]);
Per Cederqvist's avatar
Per Cederqvist committed
335 336 337 338
	}
    
    if (i < argc)
    {
Per Cederqvist's avatar
Per Cederqvist committed
339 340
	restart_kom("usage: %s [-d] [-q] [-Ddir] [-pport] [-Pmuxport]"
		    " [-a]\n", argv[0]);
Per Cederqvist's avatar
Per Cederqvist committed
341 342 343 344 345 346 347 348 349 350
    }

    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
351

Per Cederqvist's avatar
Per Cederqvist committed
352
    toploop();
Per Cederqvist's avatar
Per Cederqvist committed
353 354

    logout_all_clients();
355
    isc_shutdown(kom_server_mcb);
Per Cederqvist's avatar
Per Cederqvist committed
356
    cache_sync_all();
Per Cederqvist's avatar
Per Cederqvist committed
357

358 359
    dump_exit_statistics();

Per Cederqvist's avatar
Per Cederqvist committed
360
    log("%s terminated normally.\n", argv[0]);
361 362 363 364 365 366 367 368 369 370 371 372
    
    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
373 374 375 376

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

377 378
    fprintf(stat_file, "\nLysKOM Server going down at %s\n", ctime(&now));

379 380 381 382 383
    dump_cache_stats (stat_file);

    free_all_tmp();
    free_all_cache();

Per Cederqvist's avatar
Per Cederqvist committed
384 385
    dump_smalloc_counts(stat_file);
    dump_alloc_counts(stat_file);
386
    dump_cache_mem_usage(stat_file);
Per Cederqvist's avatar
Per Cederqvist committed
387
    dump_string_alloc_counts(stat_file);
388
    dump_allocated_connections(stat_file);
389
    dump_isc_alloc_counts(stat_file);
Per Cederqvist's avatar
Per Cederqvist committed
390
    fclose (stat_file);
Per Cederqvist's avatar
Per Cederqvist committed
391
}
392
    
Per Cederqvist's avatar
Per Cederqvist committed
393 394 395 396
void
restart_kom(const char * format, ...)
{
    va_list AP;
397 398
    char pathname[MAXPATHLEN];
    char *getwd(char *pathname); /* +++ should be in sys/param.h */
Per Cederqvist's avatar
Per Cederqvist committed
399 400 401 402 403 404

    va_start(AP, format);
    logv(format, AP);
    va_end(AP);

    log("Previous message is fatal. Will dump core now.\n");
405 406 407 408 409
    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
410 411
    abort();
}