/*
- * Copyright (C) 1994, Index Data I/S
- * All rights reserved.
+ * Copyright (c) 1995, Index Data
+ * See the file LICENSE for details.
* Sebastian Hammer, Adam Dickmeiss
*
* $Log: statserv.c,v $
- * Revision 1.8 1995-03-20 09:46:26 quinn
+ * Revision 1.35 1996-05-29 10:03:28 quinn
+ * Options work
+ *
+ * Revision 1.34 1996/02/21 13:12:07 quinn
+ * *** empty log message ***
+ *
+ * Revision 1.33 1996/02/10 12:23:49 quinn
+ * Enable inetd operations fro TCP/IP stack
+ *
+ * Revision 1.32 1996/01/19 15:41:52 quinn
+ * *** empty log message ***
+ *
+ * Revision 1.31 1995/11/17 11:09:39 adam
+ * Added new option '-c' to specify configuration name in control block.
+ *
+ * Revision 1.30 1995/11/01 13:54:59 quinn
+ * Minor adjustments
+ *
+ * Revision 1.29 1995/10/30 12:41:29 quinn
+ * Added hostname lookup for server.
+ *
+ * Revision 1.28 1995/09/29 17:12:30 quinn
+ * Smallish
+ *
+ * Revision 1.27 1995/09/27 15:03:02 quinn
+ * Modified function heads & prototypes.
+ *
+ * Revision 1.26 1995/08/29 14:44:51 quinn
+ * Reset timeouts.
+ *
+ * Revision 1.25 1995/08/29 11:18:02 quinn
+ * Added code to receive close
+ *
+ * Revision 1.24 1995/06/16 10:31:39 quinn
+ * Added session timeout.
+ *
+ * Revision 1.23 1995/06/15 12:30:48 quinn
+ * Setuid-facility.
+ *
+ * Revision 1.22 1995/06/15 07:45:17 quinn
+ * Moving to v3.
+ *
+ * Revision 1.21 1995/06/06 08:15:40 quinn
+ * Cosmetic.
+ *
+ * Revision 1.20 1995/05/29 08:12:09 quinn
+ * Moved oid to util
+ *
+ * Revision 1.19 1995/05/16 09:37:27 quinn
+ * Fixed bug
+ *
+ * Revision 1.18 1995/05/16 08:51:09 quinn
+ * License, documentation, and memory fixes
+ *
+ * Revision 1.17 1995/05/15 11:56:42 quinn
+ * Asynchronous facilities. Restructuring of seshigh code.
+ *
+ * Revision 1.16 1995/04/10 10:23:40 quinn
+ * Some work to add scan and other things.
+ *
+ * Revision 1.15 1995/03/31 10:16:51 quinn
+ * Fixed logging.
+ *
+ * Revision 1.14 1995/03/31 09:18:58 quinn
+ * Added logging.
+ *
+ * Revision 1.13 1995/03/30 16:08:39 quinn
+ * Little mods.
+ *
+ * Revision 1.12 1995/03/30 13:29:02 quinn
+ * Smallish
+ *
+ * Revision 1.11 1995/03/30 12:18:17 quinn
+ * Fixed bug.
+ *
+ * Revision 1.10 1995/03/29 15:40:16 quinn
+ * Ongoing work. Statserv is now dynamic by default
+ *
+ * Revision 1.9 1995/03/27 08:34:30 quinn
+ * Added dynamic server functionality.
+ * Released bindings to session.c (is now redundant)
+ *
+ * Revision 1.8 1995/03/20 09:46:26 quinn
* Added osi support.
*
* Revision 1.7 1995/03/16 13:29:04 quinn
*/
#include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/wait.h>
+#include <signal.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <pwd.h>
+#include <sys/time.h>
#include <options.h>
#include <eventl.h>
#include <eventl.h>
#include <comstack.h>
#include <tcpip.h>
+#ifdef USE_XTIMOSI
#include <xmosi.h>
+#endif
+#include <log.h>
+#include <statserv.h>
-#include <unistd.h>
-#include <fcntl.h>
-
-static char *me = "";
-
-#define DEFAULT_LISTENER "tcp:localhost:9999"
+static char *me = "statserver";
+/*
+ * default behavior.
+ */
+static statserv_options_block control_block = {
+ 1, /* dynamic mode */
+ LOG_DEFAULT_LEVEL, /* log level */
+ "", /* no PDUs */
+ "", /* diagnostic output to stderr */
+ "tcp:@:9999", /* default listener port */
+ PROTO_Z3950, /* default application protocol */
+ 60, /* idle timeout (minutes) */
+ 1024*1024, /* maximum PDU size (approx.) to allow */
+ "default-config", /* configuration name to pass to backend */
+ "" /* set user id */
+};
/*
* handle incoming connect requests.
+ * The dynamic mode is a bit tricky mostly because we want to avoid
+ * doing all of the listening and accepting in the parent - it's
+ * safer that way.
*/
-void listener(IOCHAN h, int event)
+static void listener(IOCHAN h, int event)
{
COMSTACK line = (COMSTACK) iochan_getdata(h);
association *newas;
+ static int hand[2];
+ static int child = 0;
+ int res;
if (event == EVENT_INPUT)
{
- if (cs_listen(line, 0, 0) < 0)
+ if (control_block.dynamic && !child)
{
- if (cs_errno(line) == CSNODATA)
+ int res;
+
+ if (pipe(hand) < 0)
+ {
+ logf(LOG_FATAL|LOG_ERRNO, "pipe");
+ exit(1);
+ }
+ if ((res = fork()) < 0)
+ {
+ logf(LOG_FATAL|LOG_ERRNO, "fork");
+ exit(1);
+ }
+ else if (res == 0) /* child */
+ {
+ char nbuf[100];
+ IOCHAN pp;
+
+ close(hand[0]);
+ child = 1;
+ for (pp = iochan_getchan(); pp; pp = iochan_getnext(pp))
+ {
+ if (pp != h)
+ {
+ COMSTACK l = iochan_getdata(pp);
+ cs_close(l);
+ iochan_destroy(pp);
+ }
+ }
+ sprintf(nbuf, "%s(%d)", me, getpid());
+ log_init(control_block.loglevel, nbuf, 0);
+ }
+ else /* parent */
+ {
+ close(hand[1]);
+ /* wait for child to take the call */
+ for (;;)
+ {
+ char dummy[1];
+ int res;
+
+ if ((res = read(hand[0], dummy, 1)) < 0 && errno != EINTR)
+ {
+ logf(LOG_FATAL|LOG_ERRNO, "handshake read");
+ exit(1);
+ }
+ else if (res >= 0)
+ break;
+ }
+ logf(LOG_DEBUG, "P: Child has taken the call");
+ close(hand[0]);
return;
- fprintf(stderr, "cs_listen failed.\n");
- exit(1);
+ }
}
+ if ((res = cs_listen(line, 0, 0)) < 0)
+ {
+ logf(LOG_FATAL, "cs_listen failed.");
+ return;
+ }
+ else if (res == 1)
+ return;
+ logf(LOG_DEBUG, "listen ok");
iochan_setevent(h, EVENT_OUTPUT);
iochan_setflags(h, EVENT_OUTPUT | EVENT_EXCEPT); /* set up for acpt */
}
+ /* in dynamic mode, only the child ever comes down here */
else if (event == EVENT_OUTPUT)
{
COMSTACK new_line;
IOCHAN new_chan;
+ char *a;
- if (!(new_line = cs_accept(line)))
- {
- fprintf(stderr, "Accept failed.\n");
- exit(1);
+ if (!(new_line = cs_accept(line)))
+ {
+ logf(LOG_FATAL, "Accept failed.");
+ iochan_setflags(h, EVENT_INPUT | EVENT_EXCEPT); /* reset listener */
+ return;
+ }
+ logf(LOG_DEBUG, "accept ok");
+ if (control_block.dynamic)
+ {
+ IOCHAN pp;
+ /* close our half of the listener socket */
+ for (pp = iochan_getchan(); pp; pp = iochan_getnext(pp))
+ {
+ COMSTACK l = iochan_getdata(pp);
+ cs_close(l);
+ iochan_destroy(pp);
+ }
+ /* release dad */
+ logf(LOG_DEBUG, "Releasing parent");
+ close(hand[1]);
}
+ else
+ iochan_setflags(h, EVENT_INPUT | EVENT_EXCEPT); /* reset listener */
+
if (!(new_chan = iochan_create(cs_fileno(new_line), ir_session,
EVENT_INPUT)))
{
- fprintf(stderr, "Failed to create iochan\n");
+ logf(LOG_FATAL, "Failed to create iochan");
exit(1);
}
if (!(newas = create_association(new_chan, new_line)))
{
- fprintf(stderr, "Failed to create new assoc.\n");
+ logf(LOG_FATAL, "Failed to create new assoc.");
exit(1);
}
iochan_setdata(new_chan, newas);
- iochan_setflags(h, EVENT_INPUT | EVENT_EXCEPT); /* reset for listen */
+ iochan_settimeout(new_chan, control_block.idle_timeout * 60);
+ a = cs_addrstr(new_line);
+ logf(LOG_LOG, "Accepted connection from %s", a ? a : "[Unknown]");
}
else
{
- fprintf(stderr, "Bad event on listener.\n");
+ logf(LOG_FATAL, "Bad event on listener.");
exit(1);
}
}
+static void inetd_connection(int what)
+{
+ COMSTACK line;
+ IOCHAN chan;
+ association *assoc;
+ char *addr;
+
+ if (!(line = cs_createbysocket(0, tcpip_type, 0, what)))
+ {
+ logf(LOG_ERRNO|LOG_FATAL, "Failed to create comstack on socket 0");
+ exit(1);
+ }
+ if (!(chan = iochan_create(cs_fileno(line), ir_session, EVENT_INPUT)))
+ {
+ logf(LOG_FATAL, "Failed to create iochan");
+ exit(1);
+ }
+ if (!(assoc = create_association(chan, line)))
+ {
+ logf(LOG_FATAL, "Failed to create association structure");
+ exit(1);
+ }
+ iochan_setdata(chan, assoc);
+ iochan_settimeout(chan, control_block.idle_timeout * 60);
+ addr = cs_addrstr(line);
+ logf(LOG_LOG, "Inetd association from %s", addr ? addr : "[UNKNOWN]");
+}
+
/*
* Set up a listening endpoint, and give it to the event-handler.
*/
-void add_listener(char *where)
+static void add_listener(char *where, int what)
{
COMSTACK l;
CS_TYPE type;
void *ap;
IOCHAN lst;
- fprintf(stderr, "Adding listener on %s\n", where);
if (!where || sscanf(where, "%[^:]:%s", mode, addr) != 2)
{
fprintf(stderr, "%s: Address format: ('tcp'|'osi')':'<address>.\n",
}
else if (!strcmp(mode, "osi"))
{
+#ifdef USE_XTIMOSI
if (!(ap = mosi_strtoaddr(addr)))
{
fprintf(stderr, "Address resolution failed for TCP.\n");
exit(1);
}
type = mosi_type;
+#else
+ fprintf(stderr, "OSI Transport not allowed by configuration.\n");
+ exit(1);
+#endif
}
else
{
fprintf(stderr, "You must specify either 'osi:' or 'tcp:'.\n");
exit(1);
}
- if (!(l = cs_create(type, 0)))
+ logf(LOG_LOG, "Adding %s %s listener on %s",
+ control_block.dynamic ? "dynamic" : "static",
+ what == PROTO_SR ? "SR" : "Z3950", where);
+ if (!(l = cs_create(type, 0, what)))
{
- fprintf(stderr, "Failed to create listener\n");
+ logf(LOG_FATAL|LOG_ERRNO, "Failed to create listener");
exit(1);
}
if (cs_bind(l, ap, CS_SERVER) < 0)
{
- fprintf(stderr, "Failed to bind.\n");
- perror(where);
+ logf(LOG_FATAL|LOG_ERRNO, "Failed to bind to %s", where);
exit(1);
}
if (!(lst = iochan_create(cs_fileno(l), listener, EVENT_INPUT |
EVENT_EXCEPT)))
{
- fprintf(stderr, "Failed to create IOCHAN-type\n");
+ logf(LOG_FATAL|LOG_ERRNO, "Failed to create IOCHAN-type");
exit(1);
}
iochan_setdata(lst, l);
}
+static void catchchld(int num)
+{
+ while (waitpid(-1, 0, WNOHANG) > 0)
+ ;
+ signal(SIGCHLD, catchchld);
+}
+
+statserv_options_block *statserv_getcontrol(void)
+{
+ static statserv_options_block cb;
+
+ memcpy(&cb, &control_block, sizeof(cb));
+ return &cb;
+}
+
+void statserv_setcontrol(statserv_options_block *block)
+{
+ memcpy(&control_block, block, sizeof(*block));
+}
+
int statserv_main(int argc, char **argv)
{
- int ret, listeners = 0;
+ int ret, listeners = 0, inetd = 0, r;
char *arg;
+ int protocol = control_block.default_proto;
me = argv[0];
- while ((ret = options("l:", argv, argc, &arg)) != -2)
+ while ((ret = options("a:iszSl:v:u:c:w:t:k:", argv, argc, &arg)) != -2)
+ {
switch (ret)
{
- case 0: me = arg; break;
- case 'l': add_listener(arg); listeners++; break;
+ case 0:
+ add_listener(arg, protocol);
+ listeners++;
+ break;
+ case 'z': protocol = PROTO_Z3950; break;
+ case 's': protocol = PROTO_SR; break;
+ case 'S': control_block.dynamic = 0; break;
+ case 'l':
+ strcpy(control_block.logfile, arg ? arg : "");
+ log_init(control_block.loglevel, me, control_block.logfile);
+ break;
+ case 'v':
+ control_block.loglevel = log_mask_str(arg);
+ log_init(control_block.loglevel, me, control_block.logfile);
+ break;
+ case 'a':
+ strcpy(control_block.apdufile, arg ? arg : ""); break;
+ case 'u':
+ strcpy(control_block.setuid, arg ? arg : ""); break;
+ case 'c':
+ strcpy(control_block.configname, arg ? arg : ""); break;
+ case 't':
+ if (!arg || !(r = atoi(arg)))
+ {
+ fprintf(stderr, "%s: Specify positive timeout for -t.\n",
+ me);
+ exit(1);
+ }
+ control_block.idle_timeout = r;
+ break;
+ case 'k':
+ if (!arg || !(r = atoi(arg)))
+ {
+ fprintf(stderr, "%s: Specify positive timeout for -t.\n",
+ me);
+ exit(1);
+ }
+ control_block.maxrecordsize = r * 1024;
+ break;
+ case 'i':
+ inetd = 1; break;
+ case 'w':
+ if (chdir(arg))
+ {
+ perror(arg);
+ exit(1);
+ }
+ break;
default:
- fprintf(stderr, "Usage: %s [-l <listener-addr>]\n", me);
+ fprintf(stderr, "Usage: %s [ -i -a <pdufile> -v <loglevel>"
+ " -l <logfile> -u <user> -c <config> -t <minutes>"
+ " -k <kilobytes>"
+ " -zsS <listener-addr> -w <directory> ... ]\n", me);
exit(1);
+ }
+ }
+ if (inetd)
+ inetd_connection(protocol);
+ else
+ {
+ if (control_block.dynamic)
+ signal(SIGCHLD, catchchld);
+ if (!listeners && *control_block.default_listen)
+ add_listener(control_block.default_listen, protocol);
+ }
+ if (*control_block.setuid)
+ {
+ struct passwd *pw;
+
+ if (!(pw = getpwnam(control_block.setuid)))
+ {
+ logf(LOG_FATAL, "%s: Unknown user", control_block.setuid);
+ exit(1);
}
- if (!listeners)
- add_listener(DEFAULT_LISTENER);
+ if (setuid(pw->pw_uid) < 0)
+ {
+ logf(LOG_FATAL|LOG_ERRNO, "setuid");
+ exit(1);
+ }
+ }
+ logf(LOG_LOG, "Entering event loop.");
+
return event_loop();
}
projects / yaz-moved-to-github.git / blobdiff