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