+/*
+ * Copyright (c) 1995, the EUROPAGATE consortium (see below).
+ *
+ * The EUROPAGATE consortium members are:
+ *
+ * University College Dublin
+ * Danmarks Teknologiske Videnscenter
+ * An Chomhairle Leabharlanna
+ * Consejo Superior de Investigaciones Cientificas
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation, in whole or in part, for any purpose, is hereby granted,
+ * provided that:
+ *
+ * 1. This copyright and permission notice appear in all copies of the
+ * software and its documentation. Notices of copyright or attribution
+ * which appear at the beginning of any file must remain unchanged.
+ *
+ * 2. The names of EUROPAGATE or the project partners may not be used to
+ * endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * 3. Users of this software (implementors and gateway operators) agree to
+ * inform the EUROPAGATE consortium of their use of the software. This
+ * information will be used to evaluate the EUROPAGATE project and the
+ * software, and to plan further developments. The consortium may use
+ * the information in later publications.
+ *
+ * 4. Users of this software agree to make their best efforts, when
+ * documenting their use of the software, to acknowledge the EUROPAGATE
+ * consortium, and the role played by the software in their work.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED, OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ * IN NO EVENT SHALL THE EUROPAGATE CONSORTIUM OR ITS MEMBERS BE LIABLE
+ * FOR ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF
+ * ANY KIND, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA
+ * OR PROFITS, WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND
+ * ON ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
+ * USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
/* Gateway kernel - Main
* Europagate, 1995
*
* $Log: main.c,v $
- * Revision 1.15 1995/04/17 09:34:30 adam
+ * Revision 1.30 1996/02/12 10:04:54 adam
+ * The gateway doesn't try to reconnect if it is already known that
+ * it will fail (connect_fail flag introduced).
+ *
+ * Revision 1.29 1995/07/28 10:51:08 adam
+ * Bug fix: account from previous session had effect when new target command
+ * was executed.
+ *
+ * Revision 1.28 1995/07/03 08:20:15 adam
+ * More help information and better diagnostics.
+ *
+ * Revision 1.27 1995/05/19 13:25:59 adam
+ * Bug fixes. Better command line options.
+ *
+ * Revision 1.26 1995/05/18 12:03:08 adam
+ * Bug fixes and minor improvements.
+ *
+ * Revision 1.25 1995/05/16 09:40:42 adam
+ * LICENSE. Setting of CCL token names (and/or/not/set) in read_kernel_res.
+ *
+ * Revision 1.24 1995/05/04 10:40:07 adam
+ * More work on Def-settings.
+ *
+ * Revision 1.23 1995/05/03 16:34:18 adam
+ * CCL def command, i.e. user definitions - saved as resource files.
+ *
+ * Revision 1.22 1995/05/03 07:37:39 adam
+ * CCL commands stop/continue implemented. New functions gw_res_{int,bool}
+ * are used when possible.
+ *
+ * Revision 1.21 1995/05/01 16:26:56 adam
+ * More work on resource monitor.
+ *
+ * Revision 1.20 1995/05/01 12:43:32 adam
+ * First work on resource monitor program.
+ *
+ * Revision 1.19 1995/04/19 16:01:58 adam
+ * Some hacks to get the FIFO communication work!! Isn't reliable.
+ * Resource gw.account added - default account info.
+ *
+ * Revision 1.18 1995/04/19 13:19:09 adam
+ * New command: account - for authentication.
+ *
+ * Revision 1.17 1995/04/19 10:46:18 adam
+ * Persistency works much better now. New command: status - history-like
+ *
+ * Revision 1.16 1995/04/19 07:31:07 adam
+ * First work on Z39.50 persistence.
+ *
+ * Revision 1.15 1995/04/17 09:34:30 adam
* Timeout (idletime) adjustable. Minor changes in kernel.
*
* Revision 1.14 1995/03/28 11:42:34 adam
struct gw_kernel_info info;
-static void kernel_events (struct str_queue *queue, int userid)
+static void kernel_events (struct str_queue *queue)
{
char fifo_client_name[1024];
char fifo_server_name[1024];
struct timeval tv;
int timeout;
int continuation = 0;
+ int extra_fd;
+ int persist_flag;
+ int stop_flag = 0;
- timeout = atoi(gw_res_get (info.kernel_res, "gw.timeout", "600"));
- gw_log (GW_LOG_DEBUG, KERNEL_LOG, "kernel event loop");
+ persist_flag = gw_res_bool (info.kernel_res, "gw.persist", 0);
+ timeout = gw_res_int (info.kernel_res, "gw.timeout", 600);
+ gw_log (GW_LOG_DEBUG, KERNEL_LOG, "event loop");
- sprintf (fifo_client_name, "fifo.c.%d", userid);
- sprintf (fifo_server_name, "fifo.s.%d", userid);
+ sprintf (fifo_client_name, "fifo.c.%d", info.userid);
+ sprintf (fifo_server_name, "fifo.s.%d", info.userid);
gip = gips_initialize (fifo_server_name);
- gips_open (gip, fifo_client_name);
+ gips_open (gip, fifo_client_name, 1);
gip_fd = gip_infileno (gip);
+ extra_fd = open (fifo_server_name, O_WRONLY);
while (1)
{
FD_ZERO (&set_r);
FD_SET (gip_fd, &set_r);
- tv.tv_sec = timeout;
+ if (stop_flag)
+ tv.tv_sec = 1;
+ else
+ tv.tv_sec = timeout;
tv.tv_usec = 0;
gw_log (GW_LOG_DEBUG, KERNEL_LOG, "IPC select");
}
if (r == 0)
{
- gw_log (GW_LOG_STAT, KERNEL_LOG, "Timeout after %d seconds",
- timeout);
+ if (stop_flag)
+ gw_log (GW_LOG_STAT, KERNEL_LOG, "Stopping");
+ else
+ gw_log (GW_LOG_STAT, KERNEL_LOG, "Timeout after %d seconds",
+ timeout);
+ if (info.zass && persist_flag)
+ save_p_state (info.userid);
break;
}
if (FD_ISSET (gip_fd, &set_r))
gw_log (GW_LOG_STAT, KERNEL_LOG, "IPC: %s", command);
if (!strcmp (command, "mail"))
{
- gw_log (GW_LOG_DEBUG, KERNEL_LOG, "Incoming mail...\n");
+ gw_log (GW_LOG_DEBUG, KERNEL_LOG, "Incoming mail");
while (lgets (line_buf, sizeof(line_buf)-1, gip_fd))
str_queue_enq (queue, line_buf);
urp_start (continuation, queue);
- urp_command (queue);
+ if (persist_flag && !continuation)
+ load_p_state (info.userid);
+ r = urp_command (queue);
+ if (r == 1) /* stop? */
+ {
+ info.zass = NULL; /* delete association */
+ *info.target = 0; /* indicate no target */
+ read_kernel_res(); /* reread resources */
+ if (persist_flag)
+ del_p_state (info.userid); /* remove persist file */
+ }
urp_end ();
while (str_queue_deq (queue, 0, 0))
;
else if (!strcmp (command, "stop"))
{
gw_log (GW_LOG_DEBUG, KERNEL_LOG, "stop");
- break;
+ while (lgets (line_buf, sizeof(line_buf)-1, gip_fd))
+ ;
+ break;
}
else
- {
gw_log (GW_LOG_WARN, KERNEL_LOG, "Unknown IPC: %s", command);
- }
continuation = 1;
}
}
+ close (extra_fd);
gips_close (gip);
gips_destroy (gip);
- unlink (fifo_client_name);
- unlink (fifo_server_name);
}
int main (int argc, char **argv)
{
- int userid = -1;
struct str_queue *queue;
info.kernel_res = NULL;
info.default_res = "default.res";
info.override_res = NULL;
*info.target = 0;
+ *info.account = 0;
+ info.account_in_session = 1;
info.lang = NULL;
info.bibset = NULL;
info.zass = NULL;
info.override_hostname = NULL;
info.databases = NULL;
info.database = NULL;
+ info.setno = -1;
+ info.userid = -1;
+ info.connect_failed = 0;
#if USE_FML
info.fml = NULL;
#endif
switch (argv[0][1])
{
case 'H':
- fprintf (stderr, "kernel [option..] [resource]\n");
- fprintf (stderr, "If no resource file is given");
+ fprintf (stderr, "kernel [options] [resourceFile]\n");
+ fprintf (stderr, "If no resource file is specified");
fprintf (stderr, " default.res is used\n");
fprintf (stderr, "Options:\n");
fprintf (stderr, " -d Enable debugging log\n");
fprintf (stderr, " -i id Set IPC userid\n");
exit (1);
case 'd':
+ gw_log_level (GW_LOG_ALL & ~RES_DEBUG);
+ break;
+ case 'D':
gw_log_level (GW_LOG_ALL);
break;
case 't':
break;
case 'i':
if (argv[0][2])
- userid = atoi (argv[0]+2);
+ info.userid = atoi (argv[0]+2);
else if (argc > 0)
{
--argc;
- userid = atoi (*++argv);
+ info.userid = atoi (*++argv);
}
else
{
gw_log (GW_LOG_FATAL, KERNEL_LOG, "missing user id");
exit (1);
}
+ gw_log_session (info.userid);
break;
default:
- gw_log (GW_LOG_FATAL, KERNEL_LOG, "unknown option %s", *argv);
+ gw_log (GW_LOG_FATAL, KERNEL_LOG, "unknown option %s;"
+ " use -H for help", *argv);
exit (1);
}
}
else
info.default_res = *argv;
}
- read_kernel_res ();
if (!(queue = str_queue_mk ()))
{
gw_log (GW_LOG_FATAL|GW_LOG_ERRNO, KERNEL_LOG, "str_queue_mk");
exit (1);
}
- if (userid != -1)
- kernel_events (queue, userid);
+ if (info.userid != -1)
+ {
+ read_kernel_res ();
+ kernel_events (queue);
+ }
else
{
char line_buf[512];
+ read_kernel_res ();
while (lgets (line_buf, sizeof(line_buf)-1, 0))
str_queue_enq (queue, line_buf);
urp_start (0, queue);
return 0;
}
-struct gw_user_set *user_set_add (const char *name, int hits)
+struct gw_user_set *user_set_add (const char *name, int hits,
+ const char *database,
+ struct ccl_rpn_node *rpn,
+ int present_flag,
+ const char *search_str)
{
struct gw_user_set *s;
s->name = gw_strdup (name);
s->hits = hits;
+ s->database = gw_strdup (database);
+ s->rpn = rpn;
+ s->present_flag = present_flag;
+ s->search_str = gw_strdup (search_str);
s->prev = info.sets;
info.sets = s;
return s;
for (s = info.sets; s; s = s1)
{
free (s->name);
+ free (s->database);
+ ccl_rpn_delete (s->rpn);
s1 = s->prev;
free (s);
}
void read_kernel_res (void)
{
- char path_prefix[128];
- char fname[160];
const char *v;
char *cp;
char resource_name[256];
gw_log (GW_LOG_DEBUG, KERNEL_LOG, "reading kernel resource, lang %s",
info.lang);
+ /* read default resources. These should exist */
if (gw_res_merge (info.kernel_res, info.default_res))
{
gw_log (GW_LOG_WARN, KERNEL_LOG, "Couldn't read resource file %s",
info.default_res);
return;
}
- strcpy (path_prefix, gw_res_get (info.kernel_res, "gw.path", "."));
-
+ /* fetch target definitions (if defined at all) */
if (*info.target)
{
sprintf (resource_name, "gw.target.%s", info.target);
v = gw_res_get (info.kernel_res, resource_name, NULL);
if (v)
- {
- sprintf (fname, "%s/%s", path_prefix, v);
- gw_res_merge (info.kernel_res, fname);
- }
+ gw_res_merge (info.kernel_res, v);
}
- if (info.lang)
+ /* fetch user definitions (if user-id is specified) */
+ if (info.userid >= 0)
+ {
+ char fname[250];
+ sprintf (fname, "user.%d.r", info.userid);
+ gw_res_merge (info.kernel_res, fname);
+ }
+ /* fetch language definitions (if specified at all) */
+ v = gw_res_get (info.kernel_res, "gw.language", info.lang);
+ if (v)
{
- sprintf (resource_name, "gw.lang.%s", info.lang);
+ sprintf (resource_name, "gw.lang.%s", v);
v = gw_res_get (info.kernel_res, resource_name, NULL);
if (v)
{
- sprintf (fname, "%s/%s", path_prefix, v);
- gw_res_merge (info.kernel_res, fname);
+ gw_log (GW_LOG_DEBUG, KERNEL_LOG, "Reading language resources %s",
+ v);
+ gw_res_merge (info.kernel_res, v);
}
}
+ /* fetch overriding resources from file (if specified) */
if (info.override_res)
- {
- sprintf (fname, "%s/%s", path_prefix, info.override_res);
- gw_res_merge (info.kernel_res, fname);
- }
+ gw_res_merge (info.kernel_res, info.override_res);
+
+ /* read bibset definition for ccl */
v = gw_res_get (info.kernel_res, "gw.bibset", NULL);
if (v)
{
FILE *bib_inf;
- sprintf (fname, "%s/%s", path_prefix, v);
- bib_inf = fopen (fname, "r");
+ bib_inf = fopen (v, "r");
if (!bib_inf)
- gw_log (GW_LOG_WARN, KERNEL_LOG, "cannot open %s", fname);
+ gw_log (GW_LOG_WARN, KERNEL_LOG, "cannot open %s", v);
else
{
- gw_log (GW_LOG_DEBUG, KERNEL_LOG, "reading bib file %s", fname);
+ gw_log (GW_LOG_DEBUG, KERNEL_LOG, "reading bib file %s", v);
ccl_qual_file (info.bibset, bib_inf);
fclose (bib_inf);
}
}
+
+ /* determine host name and port no */
sprintf (resource_name, "gw.target.%s", info.target);
if (*info.target && ! gw_res_get (info.kernel_res, resource_name, NULL))
{
- /* target is there, and there is no sub-resource for it... */
- char *split;
+ /* target is specified, and there is no sub-resource for it... */
+ const char *split;
if ((split = strchr (info.target, ':')))
- *split++ = '\0';
- strncpy (info.hostname, info.target, sizeof(info.hostname)-1);
- if (split)
- info.port = atoi (split);
+ {
+ memcpy (info.hostname, info.target, split-info.target);
+ info.hostname[split-info.target] = '\0';
+ info.port = atoi (split+1);
+ }
else
- info.port = atoi (gw_res_get
- (info.kernel_res, "gw.portno", "210"));
+ {
+ strcpy (info.hostname, info.target);
+ info.port = gw_res_int (info.kernel_res, "gw.portno", 210);
+ }
}
else
- {
+ { /* resources gw.hostname and gw.portno will be used */
strncpy (info.hostname, gw_res_get (info.kernel_res,
"gw.hostname", "localhost"),
sizeof(info.hostname)-1);
- info.port = atoi (gw_res_get (info.kernel_res,
- "gw.portno", "210"));
+ info.port = gw_res_int (info.kernel_res, "gw.portno", 210);
+ strcpy (info.account, gw_res_get (info.kernel_res, "gw.account", ""));
+ info.account_in_session = 0;
}
+ /* set info.databases (all available databases for target) */
+ /* set info.database (first database for target) */
if (info.databases)
free (info.databases);
if (info.database)
for (cp = info.database; (cp = strchr (cp, ' ')); cp++)
*cp = ',';
}
+
+ /* the port no can be explicitly overridden by a command line option */
if (info.override_portno)
info.port = atoi (info.override_portno);
+
+ /* the hostname can be explicitly overridden by a command line option */
if (info.override_hostname)
strncpy (info.hostname, info.override_hostname,
sizeof(info.hostname)-1);
+
+ ccl_token_and = gw_res_get (info.kernel_res, "ccl.token.and", "and");
+ ccl_token_or = gw_res_get (info.kernel_res, "ccl.token.or", "or");
+ ccl_token_not = gw_res_get (info.kernel_res, "ccl.token.not", "not");
+ ccl_token_set = gw_res_get (info.kernel_res, "ccl.token.set", "set");
+
+ /* determine if more than one result-set names is supported */
+ if (gw_res_bool (info.kernel_res, "gw.result.set", 1))
+ info.setno = 0;
+ else
+ info.setno = -1;
#if USE_FML
if (!info.fml)
{
v = gw_res_get (info.kernel_res, "gw.fml", "default.fml");
- sprintf (fname, "%s/%s", path_prefix, v);
- fml_inf = fopen (fname, "r");
+ fml_inf = fopen (v, "r");
if (!fml_inf)
- gw_log (GW_LOG_WARN, KERNEL_LOG,
- "cannot open fml script %s", fname);
+ gw_log (GW_LOG_WARN, KERNEL_LOG, "cannot open fml script %s", v);
else
{
info.fml = fml_open ();
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