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