2 * Copyright (C) 1995-1999, Index Data
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.74 1999-11-29 15:13:26 adam
8 * Server sets implementationName - and Version.
10 * Revision 1.73 1999/11/04 15:00:45 adam
11 * Implemented delete result set(s).
13 * Revision 1.71 1999/07/14 10:59:26 adam
14 * Changed functions isc_getmethod, isams_getmethod.
15 * Improved fatal error handling (such as missing EXPLAIN schema).
17 * Revision 1.70 1999/06/10 12:14:56 adam
18 * Fixed to use bend_start instead of pre_init.
20 * Revision 1.69 1999/06/10 09:20:03 adam
21 * Minor change to pre_init handler.
23 * Revision 1.68 1999/05/26 07:49:13 adam
26 * Revision 1.67 1999/02/02 14:51:14 adam
27 * Updated WIN32 code specific sections. Changed header.
29 * Revision 1.66 1998/10/28 10:54:41 adam
32 * Revision 1.65 1998/10/18 07:54:54 adam
33 * Additional info added for diagnostics 114 (Unsupported use attribute) and
34 * 121 (Unsupported attribute set).
36 * Revision 1.64 1998/09/22 10:48:21 adam
37 * Minor changes in search API.
39 * Revision 1.63 1998/09/02 13:53:21 adam
40 * Extra parameter decode added to search routines to implement
43 * Revision 1.62 1998/08/06 14:35:28 adam
44 * Routine bend_deleterequest removed.
46 * Revision 1.61 1998/06/24 12:16:15 adam
47 * Support for relations on text operands. Open range support in
48 * DFA module (i.e. [-j], [g-]).
50 * Revision 1.60 1998/06/22 11:36:49 adam
51 * Added authentication check facility to zebra.
53 * Revision 1.59 1998/06/12 12:22:13 adam
56 * Revision 1.58 1998/05/27 16:57:46 adam
57 * Zebra returns surrogate diagnostic for single records when
60 * Revision 1.57 1998/04/03 14:45:18 adam
61 * Fixed setting of last_in_set in bend_fetch.
63 * Revision 1.56 1998/03/05 08:45:13 adam
64 * New result set model and modular ranking system. Moved towards
65 * descent server API. System information stored as "SGML" records.
67 * Revision 1.55 1998/02/10 12:03:06 adam
70 * Revision 1.54 1998/01/29 13:39:13 adam
71 * Compress ISAM is default.
73 * Revision 1.53 1998/01/12 15:04:09 adam
74 * The test option (-s) only uses read-lock (and not write lock).
76 * Revision 1.52 1997/11/18 10:05:08 adam
77 * Changed character map facility so that admin can specify character
78 * mapping files for each register type, w, p, etc.
80 * Revision 1.51 1997/10/27 14:33:06 adam
81 * Moved towards generic character mapping depending on "structure"
82 * field in abstract syntax file. Fixed a few memory leaks. Fixed
83 * bug with negative integers when doing searches with relational
86 * Revision 1.50 1997/09/29 09:08:36 adam
87 * Revised locking system to be thread safe for the server.
89 * Revision 1.49 1997/09/25 14:57:23 adam
92 * Revision 1.48 1997/09/17 12:19:19 adam
93 * Zebra version corresponds to YAZ version 1.4.
94 * Changed Zebra server so that it doesn't depend on global common_resource.
96 * Revision 1.47 1997/09/04 13:58:36 adam
97 * New retrieve/extract method tellf (added).
98 * Added O_BINARY for open calls.
100 * Revision 1.46 1997/07/28 08:30:47 adam
101 * Server returns diagnostic 14 when record doesn't exist.
103 * Revision 1.45 1996/12/23 15:30:45 adam
104 * Work on truncation.
105 * Bug fix: result sets weren't deleted after server shut down.
107 * Revision 1.44 1996/12/11 12:08:01 adam
108 * Added better compression.
110 * Revision 1.43 1996/11/15 15:03:58 adam
111 * Logging of execution speed by using the times(2) call.
113 * Revision 1.42 1996/11/08 11:10:36 adam
114 * Buffers used during file match got bigger.
115 * Compressed ISAM support everywhere.
116 * Bug fixes regarding masking characters in queries.
117 * Redesigned Regexp-2 queries.
119 * Revision 1.41 1996/10/29 14:09:56 adam
120 * Use of cisam system - enabled if setting isamc is 1.
122 * Revision 1.40 1996/06/04 10:19:02 adam
123 * Minor changes - removed include of ctype.h.
125 * Revision 1.39 1996/05/31 09:07:05 quinn
126 * Work on character-set handling
128 * Revision 1.38 1996/05/14 11:34:01 adam
129 * Scan support in multiple registers/databases.
131 * Revision 1.37 1996/05/14 06:16:48 adam
132 * Compact use/set bytes used in search service.
134 * Revision 1.36 1996/05/01 13:46:37 adam
135 * First work on multiple records in one file.
136 * New option, -offset, to the "unread" command in the filter module.
138 * Revision 1.35 1996/03/26 16:01:14 adam
139 * New setting lockPath: directory of various lock files.
141 * Revision 1.34 1996/03/20 09:36:46 adam
142 * Function dict_lookup_grep got extra parameter, init_pos, which marks
143 * from which position in pattern approximate pattern matching should occur.
144 * Approximate pattern matching is used in relevance=re-2.
146 * Revision 1.33 1996/01/17 14:57:56 adam
147 * Prototype changed for reader functions in extract/retrieve. File
148 * is identified by 'void *' instead of 'int.
150 * Revision 1.32 1995/12/11 09:12:58 adam
151 * The rec_get function returns NULL if record doesn't exist - will
152 * happen in the server if the result set records have been deleted since
153 * the creation of the set (i.e. the search).
154 * The server saves a result temporarily if it is 'volatile', i.e. the
155 * set is register dependent.
157 * Revision 1.31 1995/12/08 16:22:56 adam
158 * Work on update while servers are running. Three lock files introduced.
159 * The servers reload their registers when necessary, but they don't
160 * reestablish result sets yet.
162 * Revision 1.30 1995/12/07 17:38:48 adam
163 * Work locking mechanisms for concurrent updates/commit.
165 * Revision 1.29 1995/12/04 14:22:32 adam
166 * Extra arg to recType_byName.
167 * Started work on new regular expression parsed input to
168 * structured records.
170 * Revision 1.28 1995/11/28 09:09:48 adam
171 * Zebra config renamed.
172 * Use setting 'recordId' to identify record now.
173 * Bug fix in recindex.c: rec_release_blocks was invokeded even
174 * though the blocks were already released.
175 * File traversal properly deletes records when needed.
177 * Revision 1.27 1995/11/27 13:58:54 adam
178 * New option -t. storeStore data implemented in server.
180 * Revision 1.26 1995/11/25 10:24:07 adam
181 * More record fields - they are enumerated now.
182 * New options: flagStoreData flagStoreKey.
184 * Revision 1.25 1995/11/21 15:29:13 adam
185 * Config file 'base' read by default by both indexer and server.
187 * Revision 1.24 1995/11/20 16:59:47 adam
188 * New update method: the 'old' keys are saved for each records.
190 * Revision 1.23 1995/11/16 17:00:56 adam
191 * Better logging of rpn query.
193 * Revision 1.22 1995/11/16 15:34:55 adam
194 * Uses new record management system in both indexer and server.
196 * Revision 1.21 1995/11/01 16:25:52 quinn
197 * *** empty log message ***
199 * Revision 1.20 1995/10/27 14:00:12 adam
200 * Implemented detection of database availability.
202 * Revision 1.19 1995/10/17 18:02:11 adam
203 * New feature: databases. Implemented as prefix to words in dictionary.
205 * Revision 1.18 1995/10/16 14:03:09 quinn
206 * Changes to support element set names and espec1
208 * Revision 1.17 1995/10/16 09:32:40 adam
209 * More work on relational op.
211 * Revision 1.16 1995/10/13 12:26:44 adam
212 * Optimization of truncation.
214 * Revision 1.15 1995/10/12 12:40:55 adam
215 * Bug fixes in rpn_prox.
217 * Revision 1.14 1995/10/09 16:18:37 adam
218 * Function dict_lookup_grep got extra client data parameter.
220 * Revision 1.13 1995/10/06 14:38:00 adam
221 * New result set method: r_score.
222 * Local no (sysno) and score is transferred to retrieveCtrl.
224 * Revision 1.12 1995/10/06 13:52:06 adam
225 * Bug fixes. Handler may abort further scanning.
227 * Revision 1.11 1995/10/06 10:43:57 adam
228 * Scan added. 'occurrences' in scan entries not set yet.
230 * Revision 1.10 1995/10/02 16:43:32 quinn
231 * Set default resulting record type in fetch.
233 * Revision 1.9 1995/10/02 15:18:52 adam
234 * New member in recRetrieveCtrl: diagnostic.
236 * Revision 1.8 1995/09/28 09:19:47 adam
237 * xfree/xmalloc used everywhere.
238 * Extract/retrieve method seems to work for text records.
240 * Revision 1.7 1995/09/27 16:17:32 adam
241 * More work on retrieve.
243 * Revision 1.6 1995/09/08 08:53:22 adam
244 * Record buffer maintained in server_info.
246 * Revision 1.5 1995/09/06 16:11:18 adam
247 * Option: only one word key per file.
249 * Revision 1.4 1995/09/06 10:33:04 adam
250 * More work on present. Some log messages removed.
252 * Revision 1.3 1995/09/05 15:28:40 adam
253 * More work on search engine.
255 * Revision 1.2 1995/09/04 12:33:43 adam
256 * Various cleanup. YAZ util used instead.
258 * Revision 1.1 1995/09/04 09:10:41 adam
259 * More work on index add/del/update.
260 * Merge sort implemented.
261 * Initial work on z39 server.
283 #include "zebrasdr.h"
286 static int bend_sort (void *handle, bend_sort_rr *rr);
287 static int bend_delete (void *handle, bend_delete_rr *rr);
289 bend_initresult *bend_init (bend_initrequest *q)
291 bend_initresult *r = (bend_initresult *)
292 odr_malloc (q->stream, sizeof(*r));
294 struct statserv_options_block *sob;
300 q->bend_sort = bend_sort;
301 q->bend_delete = bend_delete;
303 q->implementation_name = "Z'mbol Information Server";
304 q->implementation_version = "Z'mbol 1.0";
306 logf (LOG_DEBUG, "bend_init");
308 sob = statserv_getcontrol ();
309 if (!(zh = zebra_open (sob->configname)))
311 logf (LOG_FATAL, "Failed to open Zebra `%s'", sob->configname);
317 if (q->auth->which == Z_IdAuthentication_open)
319 char *openpass = xstrdup (q->auth->u.open);
320 char *cp = strchr (openpass, '/');
324 user = nmem_strdup (odr_getmem (q->stream), openpass);
325 passwd = nmem_strdup (odr_getmem (q->stream), cp+1);
330 if (zebra_auth (zh, user, passwd))
341 bend_searchresult *bend_search (void *handle, bend_searchrequest *q, int *fd)
343 ZebraHandle zh = (ZebraHandle) handle;
344 bend_searchresult *r = (bend_searchresult *)
345 odr_malloc (q->stream, sizeof(*r));
351 logf (LOG_LOG, "ResultSet '%s'", q->setname);
352 switch (q->query->which)
354 case Z_Query_type_1: case Z_Query_type_101:
355 zebra_search_rpn (zh, q->decode, q->stream, q->query->u.type_1,
356 q->num_bases, q->basenames, q->setname);
357 r->errcode = zh->errCode;
358 r->errstring = zh->errString;
363 r->errstring = "type-2";
371 bend_fetchresult *bend_fetch (void *handle, bend_fetchrequest *q, int *num)
373 ZebraHandle zh = (ZebraHandle) handle;
374 bend_fetchresult *r = (bend_fetchresult *)
375 odr_malloc (q->stream, sizeof(*r));
376 ZebraRetrievalRecord retrievalRecord;
378 retrievalRecord.position = q->number;
381 zebra_records_retrieve (zh, q->stream, q->setname, q->comp,
382 q->format, 1, &retrievalRecord);
383 if (zh->errCode) /* non Surrogate Diagnostic */
385 r->errcode = zh->errCode;
386 r->errstring = zh->errString;
388 else if (retrievalRecord.errCode) /* Surrogate Diagnostic */
390 q->surrogate_flag = 1;
391 r->errcode = retrievalRecord.errCode;
392 r->errstring = retrievalRecord.errString;
393 r->basename = retrievalRecord.base;
395 else /* Database Record */
398 r->basename = retrievalRecord.base;
399 r->record = retrievalRecord.buf;
400 r->len = retrievalRecord.len;
401 r->format = retrievalRecord.format;
406 bend_scanresult *bend_scan (void *handle, bend_scanrequest *q, int *num)
408 ZebraScanEntry *entries;
409 ZebraHandle zh = (ZebraHandle) handle;
410 bend_scanresult *r = (bend_scanresult *)
411 odr_malloc (q->stream, sizeof(*r));
414 r->term_position = q->term_position;
415 r->num_entries = q->num_entries;
417 r->entries = (struct scan_entry *)
418 odr_malloc (q->stream, sizeof(*r->entries) * q->num_entries);
419 zebra_scan (zh, q->stream, q->term,
421 q->num_bases, q->basenames,
423 &r->num_entries, &entries, &is_partial);
425 r->status = BEND_SCAN_PARTIAL;
427 r->status = BEND_SCAN_SUCCESS;
428 for (i = 0; i < r->num_entries; i++)
430 r->entries[i].term = entries[i].term;
431 r->entries[i].occurrences = entries[i].occurrences;
433 r->errcode = zh->errCode;
434 r->errstring = zh->errString;
438 void bend_close (void *handle)
440 zebra_close ((ZebraHandle) handle);
443 int bend_sort (void *handle, bend_sort_rr *rr)
445 ZebraHandle zh = (ZebraHandle) handle;
447 zebra_sort (zh, rr->stream,
448 rr->num_input_setnames, (const char **) rr->input_setnames,
449 rr->output_setname, rr->sort_sequence, &rr->sort_status);
450 rr->errcode = zh->errCode;
451 rr->errstring = zh->errString;
455 int bend_delete (void *handle, bend_delete_rr *rr)
457 ZebraHandle zh = (ZebraHandle) handle;
459 rr->delete_status = zebra_deleleResultSet(zh, rr->function,
460 rr->num_setnames, rr->setnames,
466 static void bend_start (struct statserv_options_block *sob)
470 char *pidfile = "zebrasrv.pid";
471 int fd = creat (pidfile, 0666);
473 logf (LOG_WARN|LOG_ERRNO, "creat %s", pidfile);
478 sprintf (pidstr, "%ld", (long) getpid ());
479 write (fd, pidstr, strlen(pidstr));
486 int main (int argc, char **argv)
488 struct statserv_options_block *sob;
490 sob = statserv_getcontrol ();
491 strcpy (sob->configname, FNAME_CONFIG);
493 sob->bend_start = bend_start;
495 statserv_setcontrol (sob);
500 return statserv_main (argc, argv);