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