2 * Copyright (C) 1994-1995, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.28 1995-11-28 09:09:48 adam
8 * Zebra config renamed.
9 * Use setting 'recordId' to identify record now.
10 * Bug fix in recindex.c: rec_release_blocks was invokeded even
11 * though the blocks were already released.
12 * File traversal properly deletes records when needed.
14 * Revision 1.27 1995/11/27 13:58:54 adam
15 * New option -t. storeStore data implemented in server.
17 * Revision 1.26 1995/11/25 10:24:07 adam
18 * More record fields - they are enumerated now.
19 * New options: flagStoreData flagStoreKey.
21 * Revision 1.25 1995/11/21 15:29:13 adam
22 * Config file 'base' read by default by both indexer and server.
24 * Revision 1.24 1995/11/20 16:59:47 adam
25 * New update method: the 'old' keys are saved for each records.
27 * Revision 1.23 1995/11/16 17:00:56 adam
28 * Better logging of rpn query.
30 * Revision 1.22 1995/11/16 15:34:55 adam
31 * Uses new record management system in both indexer and server.
33 * Revision 1.21 1995/11/01 16:25:52 quinn
34 * *** empty log message ***
36 * Revision 1.20 1995/10/27 14:00:12 adam
37 * Implemented detection of database availability.
39 * Revision 1.19 1995/10/17 18:02:11 adam
40 * New feature: databases. Implemented as prefix to words in dictionary.
42 * Revision 1.18 1995/10/16 14:03:09 quinn
43 * Changes to support element set names and espec1
45 * Revision 1.17 1995/10/16 09:32:40 adam
46 * More work on relational op.
48 * Revision 1.16 1995/10/13 12:26:44 adam
49 * Optimization of truncation.
51 * Revision 1.15 1995/10/12 12:40:55 adam
52 * Bug fixes in rpn_prox.
54 * Revision 1.14 1995/10/09 16:18:37 adam
55 * Function dict_lookup_grep got extra client data parameter.
57 * Revision 1.13 1995/10/06 14:38:00 adam
58 * New result set method: r_score.
59 * Local no (sysno) and score is transferred to retrieveCtrl.
61 * Revision 1.12 1995/10/06 13:52:06 adam
62 * Bug fixes. Handler may abort further scanning.
64 * Revision 1.11 1995/10/06 10:43:57 adam
65 * Scan added. 'occurrences' in scan entries not set yet.
67 * Revision 1.10 1995/10/02 16:43:32 quinn
68 * Set default resulting record type in fetch.
70 * Revision 1.9 1995/10/02 15:18:52 adam
71 * New member in recRetrieveCtrl: diagnostic.
73 * Revision 1.8 1995/09/28 09:19:47 adam
74 * xfree/xmalloc used everywhere.
75 * Extract/retrieve method seems to work for text records.
77 * Revision 1.7 1995/09/27 16:17:32 adam
78 * More work on retrieve.
80 * Revision 1.6 1995/09/08 08:53:22 adam
81 * Record buffer maintained in server_info.
83 * Revision 1.5 1995/09/06 16:11:18 adam
84 * Option: only one word key per file.
86 * Revision 1.4 1995/09/06 10:33:04 adam
87 * More work on present. Some log messages removed.
89 * Revision 1.3 1995/09/05 15:28:40 adam
90 * More work on search engine.
92 * Revision 1.2 1995/09/04 12:33:43 adam
93 * Various cleanup. YAZ util used instead.
95 * Revision 1.1 1995/09/04 09:10:41 adam
96 * More work on index add/del/update.
97 * Merge sort implemented.
98 * Initial work on z39 server.
112 ZServerInfo server_info;
114 bend_initresult *bend_init (bend_initrequest *q)
116 static bend_initresult r;
117 static char *name = "zserver";
123 logf (LOG_DEBUG, "bend_init");
125 if (!common_resource)
127 struct statserv_options_block *sob;
129 sob = statserv_getcontrol ();
130 logf (LOG_LOG, "Reading resources from %s", sob->configname);
131 if (!(common_resource = res_open (sob->configname)))
133 logf (LOG_FATAL, "Cannot open resource `%s'", sob->configname);
138 data1_tabpath = res_get(common_resource, "profilePath");
139 server_info.sets = NULL;
141 server_info.records = rec_open (0);
142 if (!(server_info.wordDict = dict_open (FNAME_WORD_DICT, 40, 0)))
144 logf (LOG_WARN, "dict_open fail: word dict");
146 r.errstring = "dict_open fail: word dict";
149 if (!(server_info.wordIsam = is_open (FNAME_WORD_ISAM, key_compare, 0,
150 sizeof (struct it_key))))
152 logf (LOG_WARN, "is_open fail: word isam");
153 dict_close (server_info.wordDict);
155 r.errstring = "is_open fail: word isam";
158 server_info.odr = odr_createmem (ODR_ENCODE);
162 bend_searchresult *bend_search (void *handle, bend_searchrequest *q, int *fd)
164 static bend_searchresult r;
171 odr_reset (server_info.odr);
172 server_info.errCode = 0;
173 server_info.errString = NULL;
175 logf (LOG_LOG, "ResultSet '%s'", q->setname);
176 switch (q->query->which)
179 r.errcode = rpn_search (&server_info, q->query->u.type_1,
180 q->num_bases, q->basenames, q->setname,
182 r.errstring = server_info.errString;
190 static int record_ext_read (int fd, char *buf, size_t count)
192 return read (fd, buf, count);
195 static int record_int_pos;
196 static char *record_int_buf;
197 static int record_int_len;
199 static int record_int_read (int fd, char *buf, size_t count)
201 int l = record_int_len - record_int_pos;
204 l = (l < count) ? l : count;
205 memcpy (buf, record_int_buf + record_int_pos, l);
210 static int record_fetch (ZServerInfo *zi, int sysno, int score, ODR stream,
211 oid_value input_format, Z_RecordComposition *comp,
212 oid_value *output_format, char **rec_bufp,
216 char *fname, *file_type;
218 struct recRetrieveCtrl retrieveCtrl;
220 rec = rec_get (zi->records, sysno);
221 file_type = rec->info[recInfo_fileType];
222 fname = rec->info[recInfo_filename];
224 if (!(rt = recType_byName (file_type)))
226 logf (LOG_FATAL|LOG_ERRNO, "Retrieve: Cannot handle type %s",
230 logf (LOG_DEBUG, "retrieve localno=%d score=%d", sysno, score);
231 if (rec->size[recInfo_storeData] > 0)
233 retrieveCtrl.readf = record_int_read;
234 record_int_len = rec->size[recInfo_storeData];
235 record_int_buf = rec->info[recInfo_storeData];
237 logf (LOG_DEBUG, "Internal retrieve. %d bytes", record_int_len);
241 if ((retrieveCtrl.fd = open (fname, O_RDONLY)) == -1)
243 char *msg = "Record doesn't exist";
244 logf (LOG_WARN|LOG_ERRNO, "Retrieve: Open record file %s", fname);
245 *output_format = VAL_SUTRS;
247 *rec_lenp = strlen (msg);
249 return 0; /* or 14: System error in presenting records */
251 retrieveCtrl.readf = record_ext_read;
253 retrieveCtrl.localno = sysno;
254 retrieveCtrl.score = score;
255 retrieveCtrl.odr = stream;
256 retrieveCtrl.input_format = retrieveCtrl.output_format = input_format;
257 retrieveCtrl.comp = comp;
258 retrieveCtrl.diagnostic = 0;
259 (*rt->retrieve)(&retrieveCtrl);
260 *output_format = retrieveCtrl.output_format;
261 *rec_bufp = retrieveCtrl.rec_buf;
262 *rec_lenp = retrieveCtrl.rec_len;
263 close (retrieveCtrl.fd);
266 return retrieveCtrl.diagnostic;
269 bend_fetchresult *bend_fetch (void *handle, bend_fetchrequest *q, int *num)
271 static bend_fetchresult r;
273 ZServerSetSysno *records;
279 odr_reset (server_info.odr);
280 server_info.errCode = 0;
282 positions[0] = q->number;
283 records = resultSetSysnoGet (&server_info, q->setname, 1, positions);
286 logf (LOG_DEBUG, "resultSetRecordGet, error");
290 if (!records[0].sysno)
293 logf (LOG_DEBUG, "Out of range. pos=%d", q->number);
296 r.errcode = record_fetch (&server_info, records[0].sysno,
297 records[0].score, q->stream, q->format,
298 q->comp, &r.format, &r.record, &r.len);
299 resultSetSysnoDel (&server_info, records, 1);
303 bend_deleteresult *bend_delete (void *handle, bend_deleterequest *q, int *num)
308 bend_scanresult *bend_scan (void *handle, bend_scanrequest *q, int *num)
310 static bend_scanresult r;
313 odr_reset (server_info.odr);
314 server_info.errCode = 0;
315 server_info.errString = 0;
317 r.term_position = q->term_position;
318 r.num_entries = q->num_entries;
319 r.errcode = rpn_scan (&server_info, q->term,
320 q->num_bases, q->basenames,
322 &r.num_entries, &r.entries, &status);
323 r.errstring = server_info.errString;
328 void bend_close (void *handle)
330 dict_close (server_info.wordDict);
331 is_close (server_info.wordIsam);
332 rec_close (&server_info.records);
336 int main (int argc, char **argv)
338 struct statserv_options_block *sob;
340 sob = statserv_getcontrol ();
341 strcpy (sob->configname, FNAME_CONFIG);
342 statserv_setcontrol (sob);
344 return statserv_main (argc, argv);