2 * Copyright (C) 1994-1995, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.29 1995-12-04 14:22:32 adam
8 * Extra arg to recType_byName.
9 * Started work on new regular expression parsed input to
12 * Revision 1.28 1995/11/28 09:09:48 adam
13 * Zebra config renamed.
14 * Use setting 'recordId' to identify record now.
15 * Bug fix in recindex.c: rec_release_blocks was invokeded even
16 * though the blocks were already released.
17 * File traversal properly deletes records when needed.
19 * Revision 1.27 1995/11/27 13:58:54 adam
20 * New option -t. storeStore data implemented in server.
22 * Revision 1.26 1995/11/25 10:24:07 adam
23 * More record fields - they are enumerated now.
24 * New options: flagStoreData flagStoreKey.
26 * Revision 1.25 1995/11/21 15:29:13 adam
27 * Config file 'base' read by default by both indexer and server.
29 * Revision 1.24 1995/11/20 16:59:47 adam
30 * New update method: the 'old' keys are saved for each records.
32 * Revision 1.23 1995/11/16 17:00:56 adam
33 * Better logging of rpn query.
35 * Revision 1.22 1995/11/16 15:34:55 adam
36 * Uses new record management system in both indexer and server.
38 * Revision 1.21 1995/11/01 16:25:52 quinn
39 * *** empty log message ***
41 * Revision 1.20 1995/10/27 14:00:12 adam
42 * Implemented detection of database availability.
44 * Revision 1.19 1995/10/17 18:02:11 adam
45 * New feature: databases. Implemented as prefix to words in dictionary.
47 * Revision 1.18 1995/10/16 14:03:09 quinn
48 * Changes to support element set names and espec1
50 * Revision 1.17 1995/10/16 09:32:40 adam
51 * More work on relational op.
53 * Revision 1.16 1995/10/13 12:26:44 adam
54 * Optimization of truncation.
56 * Revision 1.15 1995/10/12 12:40:55 adam
57 * Bug fixes in rpn_prox.
59 * Revision 1.14 1995/10/09 16:18:37 adam
60 * Function dict_lookup_grep got extra client data parameter.
62 * Revision 1.13 1995/10/06 14:38:00 adam
63 * New result set method: r_score.
64 * Local no (sysno) and score is transferred to retrieveCtrl.
66 * Revision 1.12 1995/10/06 13:52:06 adam
67 * Bug fixes. Handler may abort further scanning.
69 * Revision 1.11 1995/10/06 10:43:57 adam
70 * Scan added. 'occurrences' in scan entries not set yet.
72 * Revision 1.10 1995/10/02 16:43:32 quinn
73 * Set default resulting record type in fetch.
75 * Revision 1.9 1995/10/02 15:18:52 adam
76 * New member in recRetrieveCtrl: diagnostic.
78 * Revision 1.8 1995/09/28 09:19:47 adam
79 * xfree/xmalloc used everywhere.
80 * Extract/retrieve method seems to work for text records.
82 * Revision 1.7 1995/09/27 16:17:32 adam
83 * More work on retrieve.
85 * Revision 1.6 1995/09/08 08:53:22 adam
86 * Record buffer maintained in server_info.
88 * Revision 1.5 1995/09/06 16:11:18 adam
89 * Option: only one word key per file.
91 * Revision 1.4 1995/09/06 10:33:04 adam
92 * More work on present. Some log messages removed.
94 * Revision 1.3 1995/09/05 15:28:40 adam
95 * More work on search engine.
97 * Revision 1.2 1995/09/04 12:33:43 adam
98 * Various cleanup. YAZ util used instead.
100 * Revision 1.1 1995/09/04 09:10:41 adam
101 * More work on index add/del/update.
102 * Merge sort implemented.
103 * Initial work on z39 server.
117 ZServerInfo server_info;
119 bend_initresult *bend_init (bend_initrequest *q)
121 static bend_initresult r;
122 static char *name = "zserver";
128 logf (LOG_DEBUG, "bend_init");
130 if (!common_resource)
132 struct statserv_options_block *sob;
134 sob = statserv_getcontrol ();
135 logf (LOG_LOG, "Reading resources from %s", sob->configname);
136 if (!(common_resource = res_open (sob->configname)))
138 logf (LOG_FATAL, "Cannot open resource `%s'", sob->configname);
143 data1_tabpath = res_get(common_resource, "profilePath");
144 server_info.sets = NULL;
146 server_info.records = rec_open (0);
147 if (!(server_info.wordDict = dict_open (FNAME_WORD_DICT, 40, 0)))
149 logf (LOG_WARN, "dict_open fail: word dict");
151 r.errstring = "dict_open fail: word dict";
154 if (!(server_info.wordIsam = is_open (FNAME_WORD_ISAM, key_compare, 0,
155 sizeof (struct it_key))))
157 logf (LOG_WARN, "is_open fail: word isam");
158 dict_close (server_info.wordDict);
160 r.errstring = "is_open fail: word isam";
163 server_info.odr = odr_createmem (ODR_ENCODE);
167 bend_searchresult *bend_search (void *handle, bend_searchrequest *q, int *fd)
169 static bend_searchresult r;
176 odr_reset (server_info.odr);
177 server_info.errCode = 0;
178 server_info.errString = NULL;
180 logf (LOG_LOG, "ResultSet '%s'", q->setname);
181 switch (q->query->which)
184 r.errcode = rpn_search (&server_info, q->query->u.type_1,
185 q->num_bases, q->basenames, q->setname,
187 r.errstring = server_info.errString;
195 static int record_ext_read (int fd, char *buf, size_t count)
197 return read (fd, buf, count);
200 static int record_int_pos;
201 static char *record_int_buf;
202 static int record_int_len;
204 static int record_int_read (int fd, char *buf, size_t count)
206 int l = record_int_len - record_int_pos;
209 l = (l < count) ? l : count;
210 memcpy (buf, record_int_buf + record_int_pos, l);
215 static int record_fetch (ZServerInfo *zi, int sysno, int score, ODR stream,
216 oid_value input_format, Z_RecordComposition *comp,
217 oid_value *output_format, char **rec_bufp,
221 char *fname, *file_type;
223 struct recRetrieveCtrl retrieveCtrl;
226 rec = rec_get (zi->records, sysno);
227 file_type = rec->info[recInfo_fileType];
228 fname = rec->info[recInfo_filename];
230 if (!(rt = recType_byName (file_type, subType)))
232 logf (LOG_FATAL|LOG_ERRNO, "Retrieve: Cannot handle type %s",
236 logf (LOG_DEBUG, "retrieve localno=%d score=%d", sysno, score);
237 if (rec->size[recInfo_storeData] > 0)
239 retrieveCtrl.readf = record_int_read;
240 record_int_len = rec->size[recInfo_storeData];
241 record_int_buf = rec->info[recInfo_storeData];
243 logf (LOG_DEBUG, "Internal retrieve. %d bytes", record_int_len);
247 if ((retrieveCtrl.fd = open (fname, O_RDONLY)) == -1)
249 char *msg = "Record doesn't exist";
250 logf (LOG_WARN|LOG_ERRNO, "Retrieve: Open record file %s", fname);
251 *output_format = VAL_SUTRS;
253 *rec_lenp = strlen (msg);
255 return 0; /* or 14: System error in presenting records */
257 retrieveCtrl.readf = record_ext_read;
259 retrieveCtrl.subType = subType;
260 retrieveCtrl.localno = sysno;
261 retrieveCtrl.score = score;
262 retrieveCtrl.odr = stream;
263 retrieveCtrl.input_format = retrieveCtrl.output_format = input_format;
264 retrieveCtrl.comp = comp;
265 retrieveCtrl.diagnostic = 0;
266 (*rt->retrieve)(&retrieveCtrl);
267 *output_format = retrieveCtrl.output_format;
268 *rec_bufp = retrieveCtrl.rec_buf;
269 *rec_lenp = retrieveCtrl.rec_len;
270 close (retrieveCtrl.fd);
273 return retrieveCtrl.diagnostic;
276 bend_fetchresult *bend_fetch (void *handle, bend_fetchrequest *q, int *num)
278 static bend_fetchresult r;
280 ZServerSetSysno *records;
286 odr_reset (server_info.odr);
287 server_info.errCode = 0;
289 positions[0] = q->number;
290 records = resultSetSysnoGet (&server_info, q->setname, 1, positions);
293 logf (LOG_DEBUG, "resultSetRecordGet, error");
297 if (!records[0].sysno)
300 logf (LOG_DEBUG, "Out of range. pos=%d", q->number);
303 r.errcode = record_fetch (&server_info, records[0].sysno,
304 records[0].score, q->stream, q->format,
305 q->comp, &r.format, &r.record, &r.len);
306 resultSetSysnoDel (&server_info, records, 1);
310 bend_deleteresult *bend_delete (void *handle, bend_deleterequest *q, int *num)
315 bend_scanresult *bend_scan (void *handle, bend_scanrequest *q, int *num)
317 static bend_scanresult r;
320 odr_reset (server_info.odr);
321 server_info.errCode = 0;
322 server_info.errString = 0;
324 r.term_position = q->term_position;
325 r.num_entries = q->num_entries;
326 r.errcode = rpn_scan (&server_info, q->term,
327 q->num_bases, q->basenames,
329 &r.num_entries, &r.entries, &status);
330 r.errstring = server_info.errString;
335 void bend_close (void *handle)
337 dict_close (server_info.wordDict);
338 is_close (server_info.wordIsam);
339 rec_close (&server_info.records);
343 int main (int argc, char **argv)
345 struct statserv_options_block *sob;
347 sob = statserv_getcontrol ();
348 strcpy (sob->configname, FNAME_CONFIG);
349 statserv_setcontrol (sob);
351 return statserv_main (argc, argv);