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