2 * Copyright (C) 1995-1998, Index Data
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.64 1998-09-22 10:48:21 adam
8 * Minor changes in search API.
10 * Revision 1.63 1998/09/02 13:53:21 adam
11 * Extra parameter decode added to search routines to implement
14 * Revision 1.62 1998/08/06 14:35:28 adam
15 * Routine bend_deleterequest removed.
17 * Revision 1.61 1998/06/24 12:16:15 adam
18 * Support for relations on text operands. Open range support in
19 * DFA module (i.e. [-j], [g-]).
21 * Revision 1.60 1998/06/22 11:36:49 adam
22 * Added authentication check facility to zebra.
24 * Revision 1.59 1998/06/12 12:22:13 adam
27 * Revision 1.58 1998/05/27 16:57:46 adam
28 * Zebra returns surrogate diagnostic for single records when
31 * Revision 1.57 1998/04/03 14:45:18 adam
32 * Fixed setting of last_in_set in bend_fetch.
34 * Revision 1.56 1998/03/05 08:45:13 adam
35 * New result set model and modular ranking system. Moved towards
36 * descent server API. System information stored as "SGML" records.
38 * Revision 1.55 1998/02/10 12:03:06 adam
41 * Revision 1.54 1998/01/29 13:39:13 adam
42 * Compress ISAM is default.
44 * Revision 1.53 1998/01/12 15:04:09 adam
45 * The test option (-s) only uses read-lock (and not write lock).
47 * Revision 1.52 1997/11/18 10:05:08 adam
48 * Changed character map facility so that admin can specify character
49 * mapping files for each register type, w, p, etc.
51 * Revision 1.51 1997/10/27 14:33:06 adam
52 * Moved towards generic character mapping depending on "structure"
53 * field in abstract syntax file. Fixed a few memory leaks. Fixed
54 * bug with negative integers when doing searches with relational
57 * Revision 1.50 1997/09/29 09:08:36 adam
58 * Revised locking system to be thread safe for the server.
60 * Revision 1.49 1997/09/25 14:57:23 adam
63 * Revision 1.48 1997/09/17 12:19:19 adam
64 * Zebra version corresponds to YAZ version 1.4.
65 * Changed Zebra server so that it doesn't depend on global common_resource.
67 * Revision 1.47 1997/09/04 13:58:36 adam
68 * New retrieve/extract method tellf (added).
69 * Added O_BINARY for open calls.
71 * Revision 1.46 1997/07/28 08:30:47 adam
72 * Server returns diagnostic 14 when record doesn't exist.
74 * Revision 1.45 1996/12/23 15:30:45 adam
76 * Bug fix: result sets weren't deleted after server shut down.
78 * Revision 1.44 1996/12/11 12:08:01 adam
79 * Added better compression.
81 * Revision 1.43 1996/11/15 15:03:58 adam
82 * Logging of execution speed by using the times(2) call.
84 * Revision 1.42 1996/11/08 11:10:36 adam
85 * Buffers used during file match got bigger.
86 * Compressed ISAM support everywhere.
87 * Bug fixes regarding masking characters in queries.
88 * Redesigned Regexp-2 queries.
90 * Revision 1.41 1996/10/29 14:09:56 adam
91 * Use of cisam system - enabled if setting isamc is 1.
93 * Revision 1.40 1996/06/04 10:19:02 adam
94 * Minor changes - removed include of ctype.h.
96 * Revision 1.39 1996/05/31 09:07:05 quinn
97 * Work on character-set handling
99 * Revision 1.38 1996/05/14 11:34:01 adam
100 * Scan support in multiple registers/databases.
102 * Revision 1.37 1996/05/14 06:16:48 adam
103 * Compact use/set bytes used in search service.
105 * Revision 1.36 1996/05/01 13:46:37 adam
106 * First work on multiple records in one file.
107 * New option, -offset, to the "unread" command in the filter module.
109 * Revision 1.35 1996/03/26 16:01:14 adam
110 * New setting lockPath: directory of various lock files.
112 * Revision 1.34 1996/03/20 09:36:46 adam
113 * Function dict_lookup_grep got extra parameter, init_pos, which marks
114 * from which position in pattern approximate pattern matching should occur.
115 * Approximate pattern matching is used in relevance=re-2.
117 * Revision 1.33 1996/01/17 14:57:56 adam
118 * Prototype changed for reader functions in extract/retrieve. File
119 * is identified by 'void *' instead of 'int.
121 * Revision 1.32 1995/12/11 09:12:58 adam
122 * The rec_get function returns NULL if record doesn't exist - will
123 * happen in the server if the result set records have been deleted since
124 * the creation of the set (i.e. the search).
125 * The server saves a result temporarily if it is 'volatile', i.e. the
126 * set is register dependent.
128 * Revision 1.31 1995/12/08 16:22:56 adam
129 * Work on update while servers are running. Three lock files introduced.
130 * The servers reload their registers when necessary, but they don't
131 * reestablish result sets yet.
133 * Revision 1.30 1995/12/07 17:38:48 adam
134 * Work locking mechanisms for concurrent updates/commit.
136 * Revision 1.29 1995/12/04 14:22:32 adam
137 * Extra arg to recType_byName.
138 * Started work on new regular expression parsed input to
139 * structured records.
141 * Revision 1.28 1995/11/28 09:09:48 adam
142 * Zebra config renamed.
143 * Use setting 'recordId' to identify record now.
144 * Bug fix in recindex.c: rec_release_blocks was invokeded even
145 * though the blocks were already released.
146 * File traversal properly deletes records when needed.
148 * Revision 1.27 1995/11/27 13:58:54 adam
149 * New option -t. storeStore data implemented in server.
151 * Revision 1.26 1995/11/25 10:24:07 adam
152 * More record fields - they are enumerated now.
153 * New options: flagStoreData flagStoreKey.
155 * Revision 1.25 1995/11/21 15:29:13 adam
156 * Config file 'base' read by default by both indexer and server.
158 * Revision 1.24 1995/11/20 16:59:47 adam
159 * New update method: the 'old' keys are saved for each records.
161 * Revision 1.23 1995/11/16 17:00:56 adam
162 * Better logging of rpn query.
164 * Revision 1.22 1995/11/16 15:34:55 adam
165 * Uses new record management system in both indexer and server.
167 * Revision 1.21 1995/11/01 16:25:52 quinn
168 * *** empty log message ***
170 * Revision 1.20 1995/10/27 14:00:12 adam
171 * Implemented detection of database availability.
173 * Revision 1.19 1995/10/17 18:02:11 adam
174 * New feature: databases. Implemented as prefix to words in dictionary.
176 * Revision 1.18 1995/10/16 14:03:09 quinn
177 * Changes to support element set names and espec1
179 * Revision 1.17 1995/10/16 09:32:40 adam
180 * More work on relational op.
182 * Revision 1.16 1995/10/13 12:26:44 adam
183 * Optimization of truncation.
185 * Revision 1.15 1995/10/12 12:40:55 adam
186 * Bug fixes in rpn_prox.
188 * Revision 1.14 1995/10/09 16:18:37 adam
189 * Function dict_lookup_grep got extra client data parameter.
191 * Revision 1.13 1995/10/06 14:38:00 adam
192 * New result set method: r_score.
193 * Local no (sysno) and score is transferred to retrieveCtrl.
195 * Revision 1.12 1995/10/06 13:52:06 adam
196 * Bug fixes. Handler may abort further scanning.
198 * Revision 1.11 1995/10/06 10:43:57 adam
199 * Scan added. 'occurrences' in scan entries not set yet.
201 * Revision 1.10 1995/10/02 16:43:32 quinn
202 * Set default resulting record type in fetch.
204 * Revision 1.9 1995/10/02 15:18:52 adam
205 * New member in recRetrieveCtrl: diagnostic.
207 * Revision 1.8 1995/09/28 09:19:47 adam
208 * xfree/xmalloc used everywhere.
209 * Extract/retrieve method seems to work for text records.
211 * Revision 1.7 1995/09/27 16:17:32 adam
212 * More work on retrieve.
214 * Revision 1.6 1995/09/08 08:53:22 adam
215 * Record buffer maintained in server_info.
217 * Revision 1.5 1995/09/06 16:11:18 adam
218 * Option: only one word key per file.
220 * Revision 1.4 1995/09/06 10:33:04 adam
221 * More work on present. Some log messages removed.
223 * Revision 1.3 1995/09/05 15:28:40 adam
224 * More work on search engine.
226 * Revision 1.2 1995/09/04 12:33:43 adam
227 * Various cleanup. YAZ util used instead.
229 * Revision 1.1 1995/09/04 09:10:41 adam
230 * More work on index add/del/update.
231 * Merge sort implemented.
232 * Initial work on z39 server.
251 static int bend_sort (void *handle, bend_sort_rr *rr);
253 bend_initresult *bend_init (bend_initrequest *q)
255 bend_initresult *r = odr_malloc (q->stream, sizeof(*r));
257 struct statserv_options_block *sob;
263 q->bend_sort = bend_sort;
265 logf (LOG_DEBUG, "bend_init");
267 sob = statserv_getcontrol ();
268 if (!(zh = zebra_open (sob->configname)))
270 logf (LOG_FATAL, "Failed to open Zebra `%s'", sob->configname);
276 if (q->auth->which == Z_IdAuthentication_open)
278 char *openpass = xstrdup (q->auth->u.open);
279 char *cp = strchr (openpass, '/');
283 user = nmem_strdup (odr_getmem (q->stream), openpass);
284 passwd = nmem_strdup (odr_getmem (q->stream), cp+1);
289 if (zebra_auth (zh, user, passwd))
300 bend_searchresult *bend_search (void *handle, bend_searchrequest *q, int *fd)
302 ZebraHandle zh = handle;
303 bend_searchresult *r = odr_malloc (q->stream, sizeof(*r));
309 logf (LOG_LOG, "ResultSet '%s'", q->setname);
310 switch (q->query->which)
312 case Z_Query_type_1: case Z_Query_type_101:
313 zebra_search_rpn (zh, q->decode, q->stream, q->query->u.type_1,
314 q->num_bases, q->basenames, q->setname);
315 r->errcode = zh->errCode;
316 r->errstring = zh->errString;
325 bend_fetchresult *bend_fetch (void *handle, bend_fetchrequest *q, int *num)
327 ZebraHandle zh = handle;
328 bend_fetchresult *r = odr_malloc (q->stream, sizeof(*r));
329 ZebraRetrievalRecord retrievalRecord;
331 retrievalRecord.position = q->number;
334 zebra_records_retrieve (zh, q->stream, q->setname, q->comp,
335 q->format, 1, &retrievalRecord);
336 if (zh->errCode) /* non Surrogate Diagnostic */
338 r->errcode = zh->errCode;
339 r->errstring = zh->errString;
341 else if (retrievalRecord.errCode) /* Surrogate Diagnostic */
343 q->surrogate_flag = 1;
344 r->errcode = retrievalRecord.errCode;
345 r->errstring = retrievalRecord.errString;
346 r->basename = retrievalRecord.base;
348 else /* Database Record */
351 r->basename = retrievalRecord.base;
352 r->record = retrievalRecord.buf;
353 r->len = retrievalRecord.len;
354 r->format = retrievalRecord.format;
359 bend_scanresult *bend_scan (void *handle, bend_scanrequest *q, int *num)
361 ZebraScanEntry *entries;
362 ZebraHandle zh = handle;
363 bend_scanresult *r = odr_malloc (q->stream, sizeof(*r));
366 r->term_position = q->term_position;
367 r->num_entries = q->num_entries;
369 r->entries = odr_malloc (q->stream, sizeof(*r->entries) * q->num_entries);
370 zebra_scan (zh, q->stream, q->term,
372 q->num_bases, q->basenames,
374 &r->num_entries, &entries, &is_partial);
376 r->status = BEND_SCAN_PARTIAL;
378 r->status = BEND_SCAN_SUCCESS;
379 for (i = 0; i < r->num_entries; i++)
381 r->entries[i].term = entries[i].term;
382 r->entries[i].occurrences = entries[i].occurrences;
384 r->errcode = zh->errCode;
385 r->errstring = zh->errString;
389 void bend_close (void *handle)
391 zebra_close ((ZebraHandle) handle);
394 int bend_sort (void *handle, bend_sort_rr *rr)
396 ZebraHandle zh = handle;
398 zebra_sort (zh, rr->stream,
399 rr->num_input_setnames, (const char **) rr->input_setnames,
400 rr->output_setname, rr->sort_sequence, &rr->sort_status);
401 rr->errcode = zh->errCode;
402 rr->errstring = zh->errString;
407 static void pre_init (struct statserv_options_block *sob)
409 char *pidfile = "zebrasrv.pid";
410 int fd = creat (pidfile, 0666);
413 logf (LOG_WARN|LOG_ERRNO, "creat %s", pidfile);
418 sprintf (pidstr, "%ld", (long) getpid ());
419 write (fd, pidstr, strlen(pidstr));
425 int main (int argc, char **argv)
427 struct statserv_options_block *sob;
429 sob = statserv_getcontrol ();
430 strcpy (sob->configname, FNAME_CONFIG);
432 sob->pre_init = pre_init;
434 statserv_setcontrol (sob);
436 return statserv_main (argc, argv);