2 * Copyright (C) 1995-1999, Index Data
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.72 1999-10-29 10:01:54 adam
8 * Minor fix in bend_init where handle wasn't set to NULL when
11 * Revision 1.71 1999/07/14 10:59:26 adam
12 * Changed functions isc_getmethod, isams_getmethod.
13 * Improved fatal error handling (such as missing EXPLAIN schema).
15 * Revision 1.70 1999/06/10 12:14:56 adam
16 * Fixed to use bend_start instead of pre_init.
18 * Revision 1.69 1999/06/10 09:20:03 adam
19 * Minor change to pre_init handler.
21 * Revision 1.68 1999/05/26 07:49:13 adam
24 * Revision 1.67 1999/02/02 14:51:14 adam
25 * Updated WIN32 code specific sections. Changed header.
27 * Revision 1.66 1998/10/28 10:54:41 adam
30 * Revision 1.65 1998/10/18 07:54:54 adam
31 * Additional info added for diagnostics 114 (Unsupported use attribute) and
32 * 121 (Unsupported attribute set).
34 * Revision 1.64 1998/09/22 10:48:21 adam
35 * Minor changes in search API.
37 * Revision 1.63 1998/09/02 13:53:21 adam
38 * Extra parameter decode added to search routines to implement
41 * Revision 1.62 1998/08/06 14:35:28 adam
42 * Routine bend_deleterequest removed.
44 * Revision 1.61 1998/06/24 12:16:15 adam
45 * Support for relations on text operands. Open range support in
46 * DFA module (i.e. [-j], [g-]).
48 * Revision 1.60 1998/06/22 11:36:49 adam
49 * Added authentication check facility to zebra.
51 * Revision 1.59 1998/06/12 12:22:13 adam
54 * Revision 1.58 1998/05/27 16:57:46 adam
55 * Zebra returns surrogate diagnostic for single records when
58 * Revision 1.57 1998/04/03 14:45:18 adam
59 * Fixed setting of last_in_set in bend_fetch.
61 * Revision 1.56 1998/03/05 08:45:13 adam
62 * New result set model and modular ranking system. Moved towards
63 * descent server API. System information stored as "SGML" records.
65 * Revision 1.55 1998/02/10 12:03:06 adam
68 * Revision 1.54 1998/01/29 13:39:13 adam
69 * Compress ISAM is default.
71 * Revision 1.53 1998/01/12 15:04:09 adam
72 * The test option (-s) only uses read-lock (and not write lock).
74 * Revision 1.52 1997/11/18 10:05:08 adam
75 * Changed character map facility so that admin can specify character
76 * mapping files for each register type, w, p, etc.
78 * Revision 1.51 1997/10/27 14:33:06 adam
79 * Moved towards generic character mapping depending on "structure"
80 * field in abstract syntax file. Fixed a few memory leaks. Fixed
81 * bug with negative integers when doing searches with relational
84 * Revision 1.50 1997/09/29 09:08:36 adam
85 * Revised locking system to be thread safe for the server.
87 * Revision 1.49 1997/09/25 14:57:23 adam
90 * Revision 1.48 1997/09/17 12:19:19 adam
91 * Zebra version corresponds to YAZ version 1.4.
92 * Changed Zebra server so that it doesn't depend on global common_resource.
94 * Revision 1.47 1997/09/04 13:58:36 adam
95 * New retrieve/extract method tellf (added).
96 * Added O_BINARY for open calls.
98 * Revision 1.46 1997/07/28 08:30:47 adam
99 * Server returns diagnostic 14 when record doesn't exist.
101 * Revision 1.45 1996/12/23 15:30:45 adam
102 * Work on truncation.
103 * Bug fix: result sets weren't deleted after server shut down.
105 * Revision 1.44 1996/12/11 12:08:01 adam
106 * Added better compression.
108 * Revision 1.43 1996/11/15 15:03:58 adam
109 * Logging of execution speed by using the times(2) call.
111 * Revision 1.42 1996/11/08 11:10:36 adam
112 * Buffers used during file match got bigger.
113 * Compressed ISAM support everywhere.
114 * Bug fixes regarding masking characters in queries.
115 * Redesigned Regexp-2 queries.
117 * Revision 1.41 1996/10/29 14:09:56 adam
118 * Use of cisam system - enabled if setting isamc is 1.
120 * Revision 1.40 1996/06/04 10:19:02 adam
121 * Minor changes - removed include of ctype.h.
123 * Revision 1.39 1996/05/31 09:07:05 quinn
124 * Work on character-set handling
126 * Revision 1.38 1996/05/14 11:34:01 adam
127 * Scan support in multiple registers/databases.
129 * Revision 1.37 1996/05/14 06:16:48 adam
130 * Compact use/set bytes used in search service.
132 * Revision 1.36 1996/05/01 13:46:37 adam
133 * First work on multiple records in one file.
134 * New option, -offset, to the "unread" command in the filter module.
136 * Revision 1.35 1996/03/26 16:01:14 adam
137 * New setting lockPath: directory of various lock files.
139 * Revision 1.34 1996/03/20 09:36:46 adam
140 * Function dict_lookup_grep got extra parameter, init_pos, which marks
141 * from which position in pattern approximate pattern matching should occur.
142 * Approximate pattern matching is used in relevance=re-2.
144 * Revision 1.33 1996/01/17 14:57:56 adam
145 * Prototype changed for reader functions in extract/retrieve. File
146 * is identified by 'void *' instead of 'int.
148 * Revision 1.32 1995/12/11 09:12:58 adam
149 * The rec_get function returns NULL if record doesn't exist - will
150 * happen in the server if the result set records have been deleted since
151 * the creation of the set (i.e. the search).
152 * The server saves a result temporarily if it is 'volatile', i.e. the
153 * set is register dependent.
155 * Revision 1.31 1995/12/08 16:22:56 adam
156 * Work on update while servers are running. Three lock files introduced.
157 * The servers reload their registers when necessary, but they don't
158 * reestablish result sets yet.
160 * Revision 1.30 1995/12/07 17:38:48 adam
161 * Work locking mechanisms for concurrent updates/commit.
163 * Revision 1.29 1995/12/04 14:22:32 adam
164 * Extra arg to recType_byName.
165 * Started work on new regular expression parsed input to
166 * structured records.
168 * Revision 1.28 1995/11/28 09:09:48 adam
169 * Zebra config renamed.
170 * Use setting 'recordId' to identify record now.
171 * Bug fix in recindex.c: rec_release_blocks was invokeded even
172 * though the blocks were already released.
173 * File traversal properly deletes records when needed.
175 * Revision 1.27 1995/11/27 13:58:54 adam
176 * New option -t. storeStore data implemented in server.
178 * Revision 1.26 1995/11/25 10:24:07 adam
179 * More record fields - they are enumerated now.
180 * New options: flagStoreData flagStoreKey.
182 * Revision 1.25 1995/11/21 15:29:13 adam
183 * Config file 'base' read by default by both indexer and server.
185 * Revision 1.24 1995/11/20 16:59:47 adam
186 * New update method: the 'old' keys are saved for each records.
188 * Revision 1.23 1995/11/16 17:00:56 adam
189 * Better logging of rpn query.
191 * Revision 1.22 1995/11/16 15:34:55 adam
192 * Uses new record management system in both indexer and server.
194 * Revision 1.21 1995/11/01 16:25:52 quinn
195 * *** empty log message ***
197 * Revision 1.20 1995/10/27 14:00:12 adam
198 * Implemented detection of database availability.
200 * Revision 1.19 1995/10/17 18:02:11 adam
201 * New feature: databases. Implemented as prefix to words in dictionary.
203 * Revision 1.18 1995/10/16 14:03:09 quinn
204 * Changes to support element set names and espec1
206 * Revision 1.17 1995/10/16 09:32:40 adam
207 * More work on relational op.
209 * Revision 1.16 1995/10/13 12:26:44 adam
210 * Optimization of truncation.
212 * Revision 1.15 1995/10/12 12:40:55 adam
213 * Bug fixes in rpn_prox.
215 * Revision 1.14 1995/10/09 16:18:37 adam
216 * Function dict_lookup_grep got extra client data parameter.
218 * Revision 1.13 1995/10/06 14:38:00 adam
219 * New result set method: r_score.
220 * Local no (sysno) and score is transferred to retrieveCtrl.
222 * Revision 1.12 1995/10/06 13:52:06 adam
223 * Bug fixes. Handler may abort further scanning.
225 * Revision 1.11 1995/10/06 10:43:57 adam
226 * Scan added. 'occurrences' in scan entries not set yet.
228 * Revision 1.10 1995/10/02 16:43:32 quinn
229 * Set default resulting record type in fetch.
231 * Revision 1.9 1995/10/02 15:18:52 adam
232 * New member in recRetrieveCtrl: diagnostic.
234 * Revision 1.8 1995/09/28 09:19:47 adam
235 * xfree/xmalloc used everywhere.
236 * Extract/retrieve method seems to work for text records.
238 * Revision 1.7 1995/09/27 16:17:32 adam
239 * More work on retrieve.
241 * Revision 1.6 1995/09/08 08:53:22 adam
242 * Record buffer maintained in server_info.
244 * Revision 1.5 1995/09/06 16:11:18 adam
245 * Option: only one word key per file.
247 * Revision 1.4 1995/09/06 10:33:04 adam
248 * More work on present. Some log messages removed.
250 * Revision 1.3 1995/09/05 15:28:40 adam
251 * More work on search engine.
253 * Revision 1.2 1995/09/04 12:33:43 adam
254 * Various cleanup. YAZ util used instead.
256 * Revision 1.1 1995/09/04 09:10:41 adam
257 * More work on index add/del/update.
258 * Merge sort implemented.
259 * Initial work on z39 server.
281 #include "zebrasdr.h"
284 static int bend_sort (void *handle, bend_sort_rr *rr);
286 bend_initresult *bend_init (bend_initrequest *q)
288 bend_initresult *r = (bend_initresult *)
289 odr_malloc (q->stream, sizeof(*r));
291 struct statserv_options_block *sob;
298 q->bend_sort = bend_sort;
300 logf (LOG_DEBUG, "bend_init");
302 sob = statserv_getcontrol ();
303 if (!(zh = zebra_open (sob->configname)))
305 logf (LOG_FATAL, "Failed to open Zebra `%s'", sob->configname);
311 if (q->auth->which == Z_IdAuthentication_open)
313 char *openpass = xstrdup (q->auth->u.open);
314 char *cp = strchr (openpass, '/');
318 user = nmem_strdup (odr_getmem (q->stream), openpass);
319 passwd = nmem_strdup (odr_getmem (q->stream), cp+1);
324 if (zebra_auth (zh, user, passwd))
335 bend_searchresult *bend_search (void *handle, bend_searchrequest *q, int *fd)
337 ZebraHandle zh = (ZebraHandle) handle;
338 bend_searchresult *r = (bend_searchresult *)
339 odr_malloc (q->stream, sizeof(*r));
345 logf (LOG_LOG, "ResultSet '%s'", q->setname);
346 switch (q->query->which)
348 case Z_Query_type_1: case Z_Query_type_101:
349 zebra_search_rpn (zh, q->decode, q->stream, q->query->u.type_1,
350 q->num_bases, q->basenames, q->setname);
351 r->errcode = zh->errCode;
352 r->errstring = zh->errString;
357 r->errstring = "type-2";
365 bend_fetchresult *bend_fetch (void *handle, bend_fetchrequest *q, int *num)
367 ZebraHandle zh = (ZebraHandle) handle;
368 bend_fetchresult *r = (bend_fetchresult *)
369 odr_malloc (q->stream, sizeof(*r));
370 ZebraRetrievalRecord retrievalRecord;
372 retrievalRecord.position = q->number;
375 zebra_records_retrieve (zh, q->stream, q->setname, q->comp,
376 q->format, 1, &retrievalRecord);
377 if (zh->errCode) /* non Surrogate Diagnostic */
379 r->errcode = zh->errCode;
380 r->errstring = zh->errString;
382 else if (retrievalRecord.errCode) /* Surrogate Diagnostic */
384 q->surrogate_flag = 1;
385 r->errcode = retrievalRecord.errCode;
386 r->errstring = retrievalRecord.errString;
387 r->basename = retrievalRecord.base;
389 else /* Database Record */
392 r->basename = retrievalRecord.base;
393 r->record = retrievalRecord.buf;
394 r->len = retrievalRecord.len;
395 r->format = retrievalRecord.format;
400 bend_scanresult *bend_scan (void *handle, bend_scanrequest *q, int *num)
402 ZebraScanEntry *entries;
403 ZebraHandle zh = (ZebraHandle) handle;
404 bend_scanresult *r = (bend_scanresult *)
405 odr_malloc (q->stream, sizeof(*r));
408 r->term_position = q->term_position;
409 r->num_entries = q->num_entries;
411 r->entries = (struct scan_entry *)
412 odr_malloc (q->stream, sizeof(*r->entries) * q->num_entries);
413 zebra_scan (zh, q->stream, q->term,
415 q->num_bases, q->basenames,
417 &r->num_entries, &entries, &is_partial);
419 r->status = BEND_SCAN_PARTIAL;
421 r->status = BEND_SCAN_SUCCESS;
422 for (i = 0; i < r->num_entries; i++)
424 r->entries[i].term = entries[i].term;
425 r->entries[i].occurrences = entries[i].occurrences;
427 r->errcode = zh->errCode;
428 r->errstring = zh->errString;
432 void bend_close (void *handle)
434 zebra_close ((ZebraHandle) handle);
437 int bend_sort (void *handle, bend_sort_rr *rr)
439 ZebraHandle zh = (ZebraHandle) handle;
441 zebra_sort (zh, rr->stream,
442 rr->num_input_setnames, (const char **) rr->input_setnames,
443 rr->output_setname, rr->sort_sequence, &rr->sort_status);
444 rr->errcode = zh->errCode;
445 rr->errstring = zh->errString;
450 static void bend_start (struct statserv_options_block *sob)
454 char *pidfile = "zebrasrv.pid";
455 int fd = creat (pidfile, 0666);
457 logf (LOG_WARN|LOG_ERRNO, "creat %s", pidfile);
462 sprintf (pidstr, "%ld", (long) getpid ());
463 write (fd, pidstr, strlen(pidstr));
470 int main (int argc, char **argv)
472 struct statserv_options_block *sob;
474 sob = statserv_getcontrol ();
475 strcpy (sob->configname, FNAME_CONFIG);
477 sob->bend_start = bend_start;
479 statserv_setcontrol (sob);
484 return statserv_main (argc, argv);