1 /* Gateway kernel - Main
5 * Revision 1.15 1995/04/17 09:34:30 adam
6 * Timeout (idletime) adjustable. Minor changes in kernel.
8 * Revision 1.14 1995/03/28 11:42:34 adam
9 * First use of string-queue utility.
11 * Revision 1.13 1995/03/28 08:01:25 adam
12 * FIFO existence is used to test for a running kernel.
14 * Revision 1.12 1995/03/27 12:51:05 adam
15 * New log level in use: GW_LOG_ERRNO.
17 * Revision 1.11 1995/03/27 08:24:02 adam
18 * First use of gip interface and gw-db.
19 * First work on eti program.
21 * Revision 1.10 1995/03/01 14:32:25 adam
22 * Better diagnostics. Default is, that only one database selected when
25 * Revision 1.9 1995/02/23 08:32:17 adam
28 * Revision 1.7 1995/02/22 15:22:33 adam
29 * Much more checking of run-time state. Show command never retrieves
30 * more records than indicated by the previous search request. Help
31 * command available. The maximum number of records retrieved can be
34 * Revision 1.6 1995/02/22 08:51:34 adam
35 * Output function can be customized in fml, which is used to print
36 * the reply to reply_fd.
38 * Revision 1.5 1995/02/20 21:16:20 adam
39 * FML support. Bug fixes. Profile for drewdb.
41 * Revision 1.4 1995/02/17 17:06:16 adam
44 * Revision 1.3 1995/02/16 18:35:09 adam
45 * First use of Zdist library. Search requests are supported.
46 * Present requests are not supported yet.
48 * Revision 1.2 1995/02/16 13:21:00 adam
49 * Organization of resource files for targets and conversion
50 * language implemented.
52 * Revision 1.1 1995/02/15 17:45:29 adam
53 * First version of email gateway kernel. Email requests are read
54 * from stdin. The output is transferred to an MTA if 'From' is
55 * found in the header - or stdout if absent. No Z39.50 client is used.
64 #include <sys/types.h>
72 FILE *reply_fd = stdout;
74 struct gw_kernel_info info;
76 static void kernel_events (struct str_queue *queue, int userid)
78 char fifo_client_name[1024];
79 char fifo_server_name[1024];
88 timeout = atoi(gw_res_get (info.kernel_res, "gw.timeout", "600"));
89 gw_log (GW_LOG_DEBUG, KERNEL_LOG, "kernel event loop");
91 sprintf (fifo_client_name, "fifo.c.%d", userid);
92 sprintf (fifo_server_name, "fifo.s.%d", userid);
94 gip = gips_initialize (fifo_server_name);
95 gips_open (gip, fifo_client_name);
96 gip_fd = gip_infileno (gip);
101 FD_SET (gip_fd, &set_r);
105 gw_log (GW_LOG_DEBUG, KERNEL_LOG, "IPC select");
106 r = select (gip_fd+1, &set_r, NULL, NULL, &tv);
109 gw_log (GW_LOG_FATAL|GW_LOG_ERRNO, KERNEL_LOG, "select");
114 gw_log (GW_LOG_STAT, KERNEL_LOG, "Timeout after %d seconds",
118 if (FD_ISSET (gip_fd, &set_r))
120 char command[128], *cp;
122 if (!(lgets (command, 127, gip_fd)))
124 gw_log (GW_LOG_WARN, KERNEL_LOG, "Unexpected close");
127 if ((cp = strchr (command, '\n')))
129 gw_log (GW_LOG_STAT, KERNEL_LOG, "IPC: %s", command);
130 if (!strcmp (command, "mail"))
132 gw_log (GW_LOG_DEBUG, KERNEL_LOG, "Incoming mail...\n");
133 while (lgets (line_buf, sizeof(line_buf)-1, gip_fd))
134 str_queue_enq (queue, line_buf);
135 urp_start (continuation, queue);
138 while (str_queue_deq (queue, 0, 0))
141 else if (!strcmp (command, "stop"))
143 gw_log (GW_LOG_DEBUG, KERNEL_LOG, "stop");
148 gw_log (GW_LOG_WARN, KERNEL_LOG, "Unknown IPC: %s", command);
155 unlink (fifo_client_name);
156 unlink (fifo_server_name);
159 int main (int argc, char **argv)
162 struct str_queue *queue;
164 info.kernel_res = NULL;
165 info.default_res = "default.res";
166 info.override_res = NULL;
171 info.override_portno = NULL;
172 info.override_hostname = NULL;
173 info.databases = NULL;
174 info.database = NULL;
181 info.kernel_res = gw_res_init ();
189 fprintf (stderr, "kernel [option..] [resource]\n");
190 fprintf (stderr, "If no resource file is given");
191 fprintf (stderr, " default.res is used\n");
192 fprintf (stderr, "Options:\n");
193 fprintf (stderr, " -d Enable debugging log\n");
194 fprintf (stderr, " -t target Open target immediately\n");
195 fprintf (stderr, " -g lang Set language\n");
196 fprintf (stderr, " -o resource Override with resource\n");
197 fprintf (stderr, " -h host Override host\n");
198 fprintf (stderr, " -p port Override port\n");
199 fprintf (stderr, " -l log Set Log file\n");
200 fprintf (stderr, " -i id Set IPC userid\n");
203 gw_log_level (GW_LOG_ALL);
207 strcpy (info.target, argv[0]+2);
211 strcpy (info.target, *++argv);
215 gw_log (GW_LOG_FATAL, KERNEL_LOG, "missing target name");
221 info.lang = argv[0]+2;
229 gw_log (GW_LOG_FATAL, KERNEL_LOG, "missing language name");
235 info.override_res = argv[0]+2;
239 info.override_res = *++argv;
243 gw_log (GW_LOG_FATAL, KERNEL_LOG, "missing override name");
249 info.override_portno = argv[0]+2;
253 info.override_portno = *++argv;
257 gw_log (GW_LOG_FATAL, KERNEL_LOG, "missing portno");
263 info.override_hostname = argv[0]+2;
267 info.override_hostname = *++argv;
271 gw_log (GW_LOG_FATAL, KERNEL_LOG, "missing hostname");
277 gw_log_file (GW_LOG_ALL, argv[0]+2);
281 gw_log_file (GW_LOG_ALL, *++argv);
285 gw_log (GW_LOG_FATAL, KERNEL_LOG, "missing log filename");
291 userid = atoi (argv[0]+2);
295 userid = atoi (*++argv);
299 gw_log (GW_LOG_FATAL, KERNEL_LOG, "missing user id");
304 gw_log (GW_LOG_FATAL, KERNEL_LOG, "unknown option %s", *argv);
309 info.default_res = *argv;
312 if (!(queue = str_queue_mk ()))
314 gw_log (GW_LOG_FATAL|GW_LOG_ERRNO, KERNEL_LOG, "str_queue_mk");
318 kernel_events (queue, userid);
322 while (lgets (line_buf, sizeof(line_buf)-1, 0))
323 str_queue_enq (queue, line_buf);
324 urp_start (0, queue);
331 struct gw_user_set *user_set_add (const char *name, int hits)
333 struct gw_user_set *s;
335 s = malloc (sizeof (*s));
338 s->name = gw_strdup (name);
345 void user_set_init (void)
347 struct gw_user_set *s, *s1;
349 for (s = info.sets; s; s = s1)
358 struct gw_user_set *user_set_search (const char *name)
360 struct gw_user_set *s;
364 for (s = info.sets; s; s = s->prev)
365 if (!strcmp (s->name, name))
371 static void fml_inf_write (int ch)
375 static FILE *fml_inf;
377 static int fml_inf_read (void)
379 return getc (fml_inf);
383 void read_kernel_res (void)
385 char path_prefix[128];
389 char resource_name[256];
394 ccl_qual_rm (&info.bibset);
395 info.bibset = ccl_qual_mk ();
398 gw_res_close (info.kernel_res);
399 info.kernel_res = gw_res_init ();
401 gw_log (GW_LOG_DEBUG, KERNEL_LOG, "reading kernel resource, default %s",
404 gw_log (GW_LOG_DEBUG, KERNEL_LOG, "reading kernel resource, target %s",
407 gw_log (GW_LOG_DEBUG, KERNEL_LOG, "reading kernel resource, lang %s",
410 if (gw_res_merge (info.kernel_res, info.default_res))
412 gw_log (GW_LOG_WARN, KERNEL_LOG, "Couldn't read resource file %s",
416 strcpy (path_prefix, gw_res_get (info.kernel_res, "gw.path", "."));
420 sprintf (resource_name, "gw.target.%s", info.target);
421 v = gw_res_get (info.kernel_res, resource_name, NULL);
424 sprintf (fname, "%s/%s", path_prefix, v);
425 gw_res_merge (info.kernel_res, fname);
430 sprintf (resource_name, "gw.lang.%s", info.lang);
431 v = gw_res_get (info.kernel_res, resource_name, NULL);
434 sprintf (fname, "%s/%s", path_prefix, v);
435 gw_res_merge (info.kernel_res, fname);
438 if (info.override_res)
440 sprintf (fname, "%s/%s", path_prefix, info.override_res);
441 gw_res_merge (info.kernel_res, fname);
443 v = gw_res_get (info.kernel_res, "gw.bibset", NULL);
448 sprintf (fname, "%s/%s", path_prefix, v);
449 bib_inf = fopen (fname, "r");
451 gw_log (GW_LOG_WARN, KERNEL_LOG, "cannot open %s", fname);
454 gw_log (GW_LOG_DEBUG, KERNEL_LOG, "reading bib file %s", fname);
455 ccl_qual_file (info.bibset, bib_inf);
459 sprintf (resource_name, "gw.target.%s", info.target);
460 if (*info.target && ! gw_res_get (info.kernel_res, resource_name, NULL))
462 /* target is there, and there is no sub-resource for it... */
465 if ((split = strchr (info.target, ':')))
467 strncpy (info.hostname, info.target, sizeof(info.hostname)-1);
469 info.port = atoi (split);
471 info.port = atoi (gw_res_get
472 (info.kernel_res, "gw.portno", "210"));
476 strncpy (info.hostname, gw_res_get (info.kernel_res,
477 "gw.hostname", "localhost"),
478 sizeof(info.hostname)-1);
479 info.port = atoi (gw_res_get (info.kernel_res,
480 "gw.portno", "210"));
483 free (info.databases);
485 free (info.database);
486 v = gw_res_get (info.kernel_res, "gw.databases", "");
487 info.databases = gw_strdup (v);
488 for (cp = info.databases; (cp = strchr (cp, ' ')); cp++)
490 v = gw_res_get (info.kernel_res, "gw.database", "");
491 if (*v == '\0' && *info.databases)
494 cp = strchr (info.databases, ',');
496 len = cp ? (cp-info.databases) : strlen (info.databases);
497 info.database = malloc (len+1);
498 assert (info.database);
499 memcpy (info.database, info.databases, len);
500 info.database[len] = '\0';
504 info.database = gw_strdup (v);
505 for (cp = info.database; (cp = strchr (cp, ' ')); cp++)
508 if (info.override_portno)
509 info.port = atoi (info.override_portno);
510 if (info.override_hostname)
511 strncpy (info.hostname, info.override_hostname,
512 sizeof(info.hostname)-1);
516 v = gw_res_get (info.kernel_res, "gw.fml", "default.fml");
517 sprintf (fname, "%s/%s", path_prefix, v);
518 fml_inf = fopen (fname, "r");
520 gw_log (GW_LOG_WARN, KERNEL_LOG,
521 "cannot open fml script %s", fname);
524 info.fml = fml_open ();
525 info.fml->read_func = fml_inf_read;
526 info.fml->write_func = fml_inf_write;
527 fml_preprocess (info.fml);