1 /* Gateway kernel - Main
5 * Revision 1.18 1995/04/19 13:19:09 adam
6 * New command: account - for authentication.
8 * Revision 1.17 1995/04/19 10:46:18 adam
9 * Persistency works much better now. New command: status - history-like
11 * Revision 1.16 1995/04/19 07:31:07 adam
12 * First work on Z39.50 persistence.
14 * Revision 1.15 1995/04/17 09:34:30 adam
15 * Timeout (idletime) adjustable. Minor changes in kernel.
17 * Revision 1.14 1995/03/28 11:42:34 adam
18 * First use of string-queue utility.
20 * Revision 1.13 1995/03/28 08:01:25 adam
21 * FIFO existence is used to test for a running kernel.
23 * Revision 1.12 1995/03/27 12:51:05 adam
24 * New log level in use: GW_LOG_ERRNO.
26 * Revision 1.11 1995/03/27 08:24:02 adam
27 * First use of gip interface and gw-db.
28 * First work on eti program.
30 * Revision 1.10 1995/03/01 14:32:25 adam
31 * Better diagnostics. Default is, that only one database selected when
34 * Revision 1.9 1995/02/23 08:32:17 adam
37 * Revision 1.7 1995/02/22 15:22:33 adam
38 * Much more checking of run-time state. Show command never retrieves
39 * more records than indicated by the previous search request. Help
40 * command available. The maximum number of records retrieved can be
43 * Revision 1.6 1995/02/22 08:51:34 adam
44 * Output function can be customized in fml, which is used to print
45 * the reply to reply_fd.
47 * Revision 1.5 1995/02/20 21:16:20 adam
48 * FML support. Bug fixes. Profile for drewdb.
50 * Revision 1.4 1995/02/17 17:06:16 adam
53 * Revision 1.3 1995/02/16 18:35:09 adam
54 * First use of Zdist library. Search requests are supported.
55 * Present requests are not supported yet.
57 * Revision 1.2 1995/02/16 13:21:00 adam
58 * Organization of resource files for targets and conversion
59 * language implemented.
61 * Revision 1.1 1995/02/15 17:45:29 adam
62 * First version of email gateway kernel. Email requests are read
63 * from stdin. The output is transferred to an MTA if 'From' is
64 * found in the header - or stdout if absent. No Z39.50 client is used.
73 #include <sys/types.h>
81 FILE *reply_fd = stdout;
83 struct gw_kernel_info info;
85 static void kernel_events (struct str_queue *queue, int userid)
87 char fifo_client_name[1024];
88 char fifo_server_name[1024];
97 timeout = atoi(gw_res_get (info.kernel_res, "gw.timeout", "600"));
98 gw_log (GW_LOG_DEBUG, KERNEL_LOG, "kernel event loop");
100 sprintf (fifo_client_name, "fifo.c.%d", userid);
101 sprintf (fifo_server_name, "fifo.s.%d", userid);
103 gip = gips_initialize (fifo_server_name);
104 gips_open (gip, fifo_client_name);
105 gip_fd = gip_infileno (gip);
110 FD_SET (gip_fd, &set_r);
114 gw_log (GW_LOG_DEBUG, KERNEL_LOG, "IPC select");
115 r = select (gip_fd+1, &set_r, NULL, NULL, &tv);
118 gw_log (GW_LOG_FATAL|GW_LOG_ERRNO, KERNEL_LOG, "select");
123 gw_log (GW_LOG_STAT, KERNEL_LOG, "Timeout after %d seconds",
126 save_p_state (userid);
129 if (FD_ISSET (gip_fd, &set_r))
131 char command[128], *cp;
133 if (!(lgets (command, 127, gip_fd)))
135 gw_log (GW_LOG_WARN, KERNEL_LOG, "Unexpected close");
138 if ((cp = strchr (command, '\n')))
140 gw_log (GW_LOG_STAT, KERNEL_LOG, "IPC: %s", command);
141 if (!strcmp (command, "mail"))
143 gw_log (GW_LOG_DEBUG, KERNEL_LOG, "Incoming mail...\n");
144 while (lgets (line_buf, sizeof(line_buf)-1, gip_fd))
145 str_queue_enq (queue, line_buf);
146 urp_start (continuation, queue);
148 load_p_state (userid);
151 while (str_queue_deq (queue, 0, 0))
154 else if (!strcmp (command, "stop"))
156 gw_log (GW_LOG_DEBUG, KERNEL_LOG, "stop");
161 gw_log (GW_LOG_WARN, KERNEL_LOG, "Unknown IPC: %s", command);
168 unlink (fifo_client_name);
169 unlink (fifo_server_name);
172 int main (int argc, char **argv)
175 struct str_queue *queue;
177 info.kernel_res = NULL;
178 info.default_res = "default.res";
179 info.override_res = NULL;
185 info.override_portno = NULL;
186 info.override_hostname = NULL;
187 info.databases = NULL;
188 info.database = NULL;
196 info.kernel_res = gw_res_init ();
204 fprintf (stderr, "kernel [option..] [resource]\n");
205 fprintf (stderr, "If no resource file is given");
206 fprintf (stderr, " default.res is used\n");
207 fprintf (stderr, "Options:\n");
208 fprintf (stderr, " -d Enable debugging log\n");
209 fprintf (stderr, " -t target Open target immediately\n");
210 fprintf (stderr, " -g lang Set language\n");
211 fprintf (stderr, " -o resource Override with resource\n");
212 fprintf (stderr, " -h host Override host\n");
213 fprintf (stderr, " -p port Override port\n");
214 fprintf (stderr, " -l log Set Log file\n");
215 fprintf (stderr, " -i id Set IPC userid\n");
218 gw_log_level (GW_LOG_ALL & ~RES_DEBUG);
221 gw_log_level (GW_LOG_ALL);
225 strcpy (info.target, argv[0]+2);
229 strcpy (info.target, *++argv);
233 gw_log (GW_LOG_FATAL, KERNEL_LOG, "missing target name");
239 info.lang = argv[0]+2;
247 gw_log (GW_LOG_FATAL, KERNEL_LOG, "missing language name");
253 info.override_res = argv[0]+2;
257 info.override_res = *++argv;
261 gw_log (GW_LOG_FATAL, KERNEL_LOG, "missing override name");
267 info.override_portno = argv[0]+2;
271 info.override_portno = *++argv;
275 gw_log (GW_LOG_FATAL, KERNEL_LOG, "missing portno");
281 info.override_hostname = argv[0]+2;
285 info.override_hostname = *++argv;
289 gw_log (GW_LOG_FATAL, KERNEL_LOG, "missing hostname");
295 gw_log_file (GW_LOG_ALL, argv[0]+2);
299 gw_log_file (GW_LOG_ALL, *++argv);
303 gw_log (GW_LOG_FATAL, KERNEL_LOG, "missing log filename");
309 userid = atoi (argv[0]+2);
313 userid = atoi (*++argv);
317 gw_log (GW_LOG_FATAL, KERNEL_LOG, "missing user id");
322 gw_log (GW_LOG_FATAL, KERNEL_LOG, "unknown option %s", *argv);
327 info.default_res = *argv;
329 if (!(queue = str_queue_mk ()))
331 gw_log (GW_LOG_FATAL|GW_LOG_ERRNO, KERNEL_LOG, "str_queue_mk");
337 kernel_events (queue, userid);
343 while (lgets (line_buf, sizeof(line_buf)-1, 0))
344 str_queue_enq (queue, line_buf);
345 urp_start (0, queue);
352 struct gw_user_set *user_set_add (const char *name, int hits,
353 const char *database,
354 struct ccl_rpn_node *rpn,
356 const char *search_str)
358 struct gw_user_set *s;
360 s = malloc (sizeof (*s));
363 s->name = gw_strdup (name);
365 s->database = gw_strdup (database);
367 s->present_flag = present_flag;
368 s->search_str = gw_strdup (search_str);
374 void user_set_init (void)
376 struct gw_user_set *s, *s1;
378 for (s = info.sets; s; s = s1)
382 ccl_rpn_delete (s->rpn);
389 struct gw_user_set *user_set_search (const char *name)
391 struct gw_user_set *s;
395 for (s = info.sets; s; s = s->prev)
396 if (!strcmp (s->name, name))
402 static void fml_inf_write (int ch)
406 static FILE *fml_inf;
408 static int fml_inf_read (void)
410 return getc (fml_inf);
414 void read_kernel_res (void)
416 char path_prefix[128];
420 char resource_name[256];
425 ccl_qual_rm (&info.bibset);
426 info.bibset = ccl_qual_mk ();
429 gw_res_close (info.kernel_res);
430 info.kernel_res = gw_res_init ();
432 gw_log (GW_LOG_DEBUG, KERNEL_LOG, "reading kernel resource, default %s",
435 gw_log (GW_LOG_DEBUG, KERNEL_LOG, "reading kernel resource, target %s",
438 gw_log (GW_LOG_DEBUG, KERNEL_LOG, "reading kernel resource, lang %s",
441 if (gw_res_merge (info.kernel_res, info.default_res))
443 gw_log (GW_LOG_WARN, KERNEL_LOG, "Couldn't read resource file %s",
447 strcpy (path_prefix, gw_res_get (info.kernel_res, "gw.path", "."));
451 sprintf (resource_name, "gw.target.%s", info.target);
452 v = gw_res_get (info.kernel_res, resource_name, NULL);
455 sprintf (fname, "%s/%s", path_prefix, v);
456 gw_res_merge (info.kernel_res, fname);
461 sprintf (resource_name, "gw.lang.%s", info.lang);
462 v = gw_res_get (info.kernel_res, resource_name, NULL);
465 sprintf (fname, "%s/%s", path_prefix, v);
466 gw_res_merge (info.kernel_res, fname);
469 if (info.override_res)
471 sprintf (fname, "%s/%s", path_prefix, info.override_res);
472 gw_res_merge (info.kernel_res, fname);
474 v = gw_res_get (info.kernel_res, "gw.bibset", NULL);
479 sprintf (fname, "%s/%s", path_prefix, v);
480 bib_inf = fopen (fname, "r");
482 gw_log (GW_LOG_WARN, KERNEL_LOG, "cannot open %s", fname);
485 gw_log (GW_LOG_DEBUG, KERNEL_LOG, "reading bib file %s", fname);
486 ccl_qual_file (info.bibset, bib_inf);
490 sprintf (resource_name, "gw.target.%s", info.target);
491 if (*info.target && ! gw_res_get (info.kernel_res, resource_name, NULL))
493 /* target is there, and there is no sub-resource for it... */
496 if ((split = strchr (info.target, ':')))
498 memcpy (info.hostname, info.target, split-info.target);
499 info.hostname[split-info.target] = '\0';
500 info.port = atoi (split+1);
504 strcpy (info.hostname, info.target);
505 info.port = atoi (gw_res_get
506 (info.kernel_res, "gw.portno", "210"));
511 strncpy (info.hostname, gw_res_get (info.kernel_res,
512 "gw.hostname", "localhost"),
513 sizeof(info.hostname)-1);
514 info.port = atoi (gw_res_get (info.kernel_res,
515 "gw.portno", "210"));
518 free (info.databases);
520 free (info.database);
521 v = gw_res_get (info.kernel_res, "gw.databases", "");
522 info.databases = gw_strdup (v);
523 for (cp = info.databases; (cp = strchr (cp, ' ')); cp++)
525 v = gw_res_get (info.kernel_res, "gw.database", "");
526 if (*v == '\0' && *info.databases)
529 cp = strchr (info.databases, ',');
531 len = cp ? (cp-info.databases) : strlen (info.databases);
532 info.database = malloc (len+1);
533 assert (info.database);
534 memcpy (info.database, info.databases, len);
535 info.database[len] = '\0';
539 info.database = gw_strdup (v);
540 for (cp = info.database; (cp = strchr (cp, ' ')); cp++)
543 if (info.override_portno)
544 info.port = atoi (info.override_portno);
545 if (info.override_hostname)
546 strncpy (info.hostname, info.override_hostname,
547 sizeof(info.hostname)-1);
548 v = gw_res_get (info.kernel_res, "gw.result.set", NULL);
549 info.setno = v ? -1 : 0;
553 v = gw_res_get (info.kernel_res, "gw.fml", "default.fml");
554 sprintf (fname, "%s/%s", path_prefix, v);
555 fml_inf = fopen (fname, "r");
557 gw_log (GW_LOG_WARN, KERNEL_LOG,
558 "cannot open fml script %s", fname);
561 info.fml = fml_open ();
562 info.fml->read_func = fml_inf_read;
563 info.fml->write_func = fml_inf_write;
564 fml_preprocess (info.fml);