ebedbde1c138482368c7c639b2ee7875130760df
[yaz-moved-to-github.git] / src / zoom-c.c
1 /* This file is part of the YAZ toolkit.
2  * Copyright (C) 1995-2009 Index Data
3  * See the file LICENSE for details.
4  */
5 /**
6  * \file zoom-c.c
7  * \brief Implements ZOOM C interface.
8  */
9
10 #include <assert.h>
11 #include <string.h>
12 #include <errno.h>
13 #include "zoom-p.h"
14
15 #include <yaz/yaz-util.h>
16 #include <yaz/xmalloc.h>
17 #include <yaz/otherinfo.h>
18 #include <yaz/log.h>
19 #include <yaz/pquery.h>
20 #include <yaz/marcdisp.h>
21 #include <yaz/diagbib1.h>
22 #include <yaz/charneg.h>
23 #include <yaz/ill.h>
24 #include <yaz/srw.h>
25 #include <yaz/cql.h>
26 #include <yaz/ccl.h>
27 #include <yaz/query-charset.h>
28 #include <yaz/copy_types.h>
29 #include <yaz/snprintf.h>
30
31 static int log_api = 0;
32 static int log_details = 0;
33
34 typedef enum {
35     zoom_pending,
36     zoom_complete
37 } zoom_ret;
38
39 static void resultset_destroy(ZOOM_resultset r);
40 static zoom_ret ZOOM_connection_send_init(ZOOM_connection c);
41 static zoom_ret do_write_ex(ZOOM_connection c, char *buf_out, int len_out);
42 static char *cql2pqf(ZOOM_connection c, const char *cql);
43
44 ZOOM_API(const char *) ZOOM_get_event_str(int event)
45 {
46     static const char *ar[] = {
47         "NONE",
48         "CONNECT",
49         "SEND_DATA",
50         "RECV_DATA",
51         "TIMEOUT",
52         "UNKNOWN",
53         "SEND_APDU",
54         "RECV_APDU",
55         "RECV_RECORD",
56         "RECV_SEARCH",
57         "END"
58     };
59     return ar[event];
60 }
61
62 /*
63  * This wrapper is just for logging failed lookups.  It would be nicer
64  * if it could cause failure when a lookup fails, but that's hard.
65  */
66 static Odr_oid *zoom_yaz_str_to_z3950oid(ZOOM_connection c,
67                                      oid_class oid_class, const char *str) {
68     Odr_oid *res = yaz_string_to_oid_odr(yaz_oid_std(), oid_class, str,
69                                      c->odr_out);
70     if (res == 0)
71         yaz_log(YLOG_WARN, "%p OID lookup (%d, '%s') failed",
72                 c, (int) oid_class, str);
73     return res;
74 }
75
76
77 static void initlog(void)
78 {
79     static int log_level_initialized = 0;
80     if (!log_level_initialized)
81     {
82         log_api = yaz_log_module_level("zoom");
83         log_details = yaz_log_module_level("zoomdetails");
84         log_level_initialized = 1;
85     }
86 }
87
88 static ZOOM_Event ZOOM_Event_create(int kind)
89 {
90     ZOOM_Event event = (ZOOM_Event) xmalloc(sizeof(*event));
91     event->kind = kind;
92     event->next = 0;
93     event->prev = 0;
94     yaz_log(log_details, "ZOOM_Event_create(kind=%d)", kind);
95     return event;
96 }
97
98 static void ZOOM_Event_destroy(ZOOM_Event event)
99 {
100     xfree(event);
101 }
102
103 static void ZOOM_connection_put_event(ZOOM_connection c, ZOOM_Event event)
104 {
105     if (c->m_queue_back)
106     {
107         c->m_queue_back->prev = event;
108         assert(c->m_queue_front);
109     }
110     else
111     {
112         assert(!c->m_queue_front);
113         c->m_queue_front = event;
114     }
115     event->next = c->m_queue_back;
116     event->prev = 0;
117     c->m_queue_back = event;
118 }
119
120 static ZOOM_Event ZOOM_connection_get_event(ZOOM_connection c)
121 {
122     ZOOM_Event event = c->m_queue_front;
123     if (!event)
124     {
125         c->last_event = ZOOM_EVENT_NONE;
126         return 0;
127     }
128     assert(c->m_queue_back);
129     c->m_queue_front = event->prev;
130     if (c->m_queue_front)
131     {
132         assert(c->m_queue_back);
133         c->m_queue_front->next = 0;
134     }
135     else
136         c->m_queue_back = 0;
137     c->last_event = event->kind;
138     return event;
139 }
140
141 static void ZOOM_connection_remove_events(ZOOM_connection c)
142 {
143     ZOOM_Event event;
144     while ((event = ZOOM_connection_get_event(c)))
145         ZOOM_Event_destroy(event);
146 }
147
148 ZOOM_API(int) ZOOM_connection_peek_event(ZOOM_connection c)
149 {
150     ZOOM_Event event = c->m_queue_front;
151
152     return event ? event->kind : ZOOM_EVENT_NONE;
153 }
154
155 void ZOOM_connection_remove_tasks(ZOOM_connection c);
156
157 static void set_dset_error(ZOOM_connection c, int error,
158                            const char *dset,
159                            const char *addinfo, const char *addinfo2)
160 {
161     char *cp;
162
163     xfree(c->addinfo);
164     c->addinfo = 0;
165     c->error = error;
166     if (!c->diagset || strcmp(dset, c->diagset))
167     {
168         xfree(c->diagset);
169         c->diagset = xstrdup(dset);
170         /* remove integer part from SRW diagset .. */
171         if ((cp = strrchr(c->diagset, '/')))
172             *cp = '\0';
173     }
174     if (addinfo && addinfo2)
175     {
176         c->addinfo = (char*) xmalloc(strlen(addinfo) + strlen(addinfo2) + 2);
177         strcpy(c->addinfo, addinfo);
178         strcat(c->addinfo, addinfo2);
179     }
180     else if (addinfo)
181         c->addinfo = xstrdup(addinfo);
182     if (error != ZOOM_ERROR_NONE)
183     {
184         yaz_log(log_api, "%p set_dset_error %s %s:%d %s %s",
185                 c, c->host_port ? c->host_port : "<>", dset, error,
186                 addinfo ? addinfo : "",
187                 addinfo2 ? addinfo2 : "");
188         ZOOM_connection_remove_tasks(c);
189     }
190 }
191
192 static int uri_to_code(const char *uri)
193 {
194     int code = 0;       
195     const char *cp;
196     if ((cp = strrchr(uri, '/')))
197         code = atoi(cp+1);
198     return code;
199 }
200
201 #if YAZ_HAVE_XML2
202 static void set_HTTP_error(ZOOM_connection c, int error,
203                            const char *addinfo, const char *addinfo2)
204 {
205     set_dset_error(c, error, "HTTP", addinfo, addinfo2);
206 }
207
208 static void set_SRU_error(ZOOM_connection c, Z_SRW_diagnostic *d)
209 {
210     const char *uri = d->uri;
211     if (uri)
212         set_dset_error(c, uri_to_code(uri), uri, d->details, 0);
213 }
214
215 #endif
216
217
218 static void set_ZOOM_error(ZOOM_connection c, int error,
219                            const char *addinfo)
220 {
221     set_dset_error(c, error, "ZOOM", addinfo, 0);
222 }
223
224 static void clear_error(ZOOM_connection c)
225 {
226     /*
227      * If an error is tied to an operation then it's ok to clear: for
228      * example, a diagnostic returned from a search is cleared by a
229      * subsequent search.  However, problems such as Connection Lost
230      * or Init Refused are not cleared, because they are not
231      * recoverable: doing another search doesn't help.
232      */
233
234     ZOOM_connection_remove_events(c);
235     switch (c->error)
236     {
237     case ZOOM_ERROR_CONNECT:
238     case ZOOM_ERROR_MEMORY:
239     case ZOOM_ERROR_DECODE:
240     case ZOOM_ERROR_CONNECTION_LOST:
241     case ZOOM_ERROR_INIT:
242     case ZOOM_ERROR_INTERNAL:
243     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
244         break;
245     default:
246         set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
247     }
248 }
249
250 void ZOOM_connection_show_task(ZOOM_task task)
251 {
252     switch(task->which)
253     {
254     case ZOOM_TASK_SEARCH:
255         yaz_log(YLOG_LOG, "search p=%p", task);
256         break;
257     case ZOOM_TASK_RETRIEVE:
258         yaz_log(YLOG_LOG, "retrieve p=%p", task);
259         break;
260     case ZOOM_TASK_CONNECT:
261         yaz_log(YLOG_LOG, "connect p=%p", task);
262         break;
263     case ZOOM_TASK_SCAN:
264         yaz_log(YLOG_LOG, "scan p=%p", task);
265         break;
266     }
267 }
268
269 void ZOOM_connection_show_tasks(ZOOM_connection c)
270 {
271     ZOOM_task task;
272     yaz_log(YLOG_LOG, "connection p=%p tasks", c);
273     for (task = c->tasks; task; task = task->next)
274         ZOOM_connection_show_task(task);
275 }
276
277 ZOOM_task ZOOM_connection_add_task(ZOOM_connection c, int which)
278 {
279     ZOOM_task *taskp = &c->tasks;
280     while (*taskp)
281         taskp = &(*taskp)->next;
282     *taskp = (ZOOM_task) xmalloc(sizeof(**taskp));
283     (*taskp)->running = 0;
284     (*taskp)->which = which;
285     (*taskp)->next = 0;
286     clear_error(c);
287     return *taskp;
288 }
289
290 ZOOM_API(int) ZOOM_connection_is_idle(ZOOM_connection c)
291 {
292     return c->tasks ? 0 : 1;
293 }
294
295 ZOOM_task ZOOM_connection_insert_task(ZOOM_connection c, int which)
296 {
297     ZOOM_task task = (ZOOM_task) xmalloc(sizeof(*task));
298
299     task->next = c->tasks;
300     c->tasks = task;
301
302     task->running = 0;
303     task->which = which;
304     clear_error(c);
305     return task;
306 }
307
308 void ZOOM_connection_remove_task(ZOOM_connection c)
309 {
310     ZOOM_task task = c->tasks;
311
312     if (task)
313     {
314         c->tasks = task->next;
315         switch (task->which)
316         {
317         case ZOOM_TASK_SEARCH:
318             resultset_destroy(task->u.search.resultset);
319             xfree(task->u.search.syntax);
320             xfree(task->u.search.elementSetName);
321             break;
322         case ZOOM_TASK_RETRIEVE:
323             resultset_destroy(task->u.retrieve.resultset);
324             xfree(task->u.retrieve.syntax);
325             xfree(task->u.retrieve.elementSetName);
326             break;
327         case ZOOM_TASK_CONNECT:
328             break;
329         case ZOOM_TASK_SCAN:
330             ZOOM_scanset_destroy(task->u.scan.scan);
331             break;
332         case ZOOM_TASK_PACKAGE:
333             ZOOM_package_destroy(task->u.package);
334             break;
335         case ZOOM_TASK_SORT:
336             resultset_destroy(task->u.sort.resultset);
337             ZOOM_query_destroy(task->u.sort.q);
338             break;
339         default:
340             assert(0);
341         }
342         xfree(task);
343
344         if (!c->tasks)
345         {
346             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_END);
347             ZOOM_connection_put_event(c, event);
348         }
349     }
350 }
351
352 static int ZOOM_connection_exec_task(ZOOM_connection c);
353
354 void ZOOM_connection_remove_tasks(ZOOM_connection c)
355 {
356     while (c->tasks)
357         ZOOM_connection_remove_task(c);
358 }
359
360 static ZOOM_record record_cache_lookup(ZOOM_resultset r, int pos,
361                                        const char *syntax,
362                                        const char *elementSetName);
363
364 ZOOM_API(ZOOM_connection)
365     ZOOM_connection_create(ZOOM_options options)
366 {
367     ZOOM_connection c = (ZOOM_connection) xmalloc(sizeof(*c));
368
369     initlog();
370
371     yaz_log(log_api, "%p ZOOM_connection_create", c);
372
373     c->proto = PROTO_Z3950;
374     c->cs = 0;
375     ZOOM_connection_set_mask(c, 0);
376     c->reconnect_ok = 0;
377     c->state = STATE_IDLE;
378     c->addinfo = 0;
379     c->diagset = 0;
380     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
381     c->buf_in = 0;
382     c->len_in = 0;
383     c->buf_out = 0;
384     c->len_out = 0;
385     c->resultsets = 0;
386
387     c->options = ZOOM_options_create_with_parent(options);
388
389     c->host_port = 0;
390     c->path = 0;
391     c->proxy = 0;
392     
393     c->charset = c->lang = 0;
394
395     c->cookie_out = 0;
396     c->cookie_in = 0;
397     c->client_IP = 0;
398     c->tasks = 0;
399
400     c->user = 0;
401     c->group = 0;
402     c->password = 0;
403
404     c->maximum_record_size = 0;
405     c->preferred_message_size = 0;
406
407     c->odr_in = odr_createmem(ODR_DECODE);
408     c->odr_out = odr_createmem(ODR_ENCODE);
409
410     c->async = 0;
411     c->support_named_resultsets = 0;
412     c->last_event = ZOOM_EVENT_NONE;
413
414     c->m_queue_front = 0;
415     c->m_queue_back = 0;
416
417     c->sru_version = 0;
418     return c;
419 }
420
421
422 /* set database names. Take local databases (if set); otherwise
423    take databases given in ZURL (if set); otherwise use Default */
424 static char **set_DatabaseNames(ZOOM_connection con, ZOOM_options options,
425                                 int *num, ODR odr)
426 {
427     char **databaseNames;
428     const char *cp = ZOOM_options_get(options, "databaseName");
429     
430     if ((!cp || !*cp) && con->host_port)
431     {
432         if (strncmp(con->host_port, "unix:", 5) == 0)
433             cp = strchr(con->host_port+5, ':');
434         else
435             cp = strchr(con->host_port, '/');
436         if (cp)
437             cp++;
438     }
439     if (!cp)
440         cp = "Default";
441     nmem_strsplit(odr_getmem(odr), "+", cp,  &databaseNames, num);
442     return databaseNames;
443 }
444
445 ZOOM_API(ZOOM_connection)
446     ZOOM_connection_new(const char *host, int portnum)
447 {
448     ZOOM_connection c = ZOOM_connection_create(0);
449
450     ZOOM_connection_connect(c, host, portnum);
451     return c;
452 }
453
454 static zoom_sru_mode get_sru_mode_from_string(const char *s)
455 {
456     if (!s || !*s)
457         return zoom_sru_soap;
458     if (!yaz_matchstr(s, "soap"))
459         return zoom_sru_soap;
460     else if (!yaz_matchstr(s, "get"))
461         return zoom_sru_get;
462     else if (!yaz_matchstr(s, "post"))
463         return zoom_sru_post;
464     return zoom_sru_error;
465 }
466
467 ZOOM_API(void)
468     ZOOM_connection_connect(ZOOM_connection c,
469                             const char *host, int portnum)
470 {
471     const char *val;
472     ZOOM_task task;
473
474     initlog();
475
476     yaz_log(log_api, "%p ZOOM_connection_connect host=%s portnum=%d",
477             c, host ? host : "null", portnum);
478
479     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
480     ZOOM_connection_remove_tasks(c);
481
482     if (ZOOM_options_get_bool(c->options, "apdulog", 0))
483     {
484         c->odr_print = odr_createmem(ODR_PRINT);
485         odr_setprint(c->odr_print, yaz_log_file());
486     }
487     else
488         c->odr_print = 0;
489
490     if (c->cs)
491     {
492         yaz_log(log_details, "%p ZOOM_connection_connect reconnect ok", c);
493         c->reconnect_ok = 1;
494         return;
495     }
496     yaz_log(log_details, "%p ZOOM_connection_connect connect", c);
497     xfree(c->proxy);
498     c->proxy = 0;
499     val = ZOOM_options_get(c->options, "proxy");
500     if (val && *val)
501     {
502         yaz_log(log_details, "%p ZOOM_connection_connect proxy=%s", c, val);
503         c->proxy = xstrdup(val);
504     }
505
506     xfree(c->charset);
507     c->charset = 0;
508     val = ZOOM_options_get(c->options, "charset");
509     if (val && *val)
510     {
511         yaz_log(log_details, "%p ZOOM_connection_connect charset=%s", c, val);
512         c->charset = xstrdup(val);
513     }
514
515     xfree(c->lang);
516     val = ZOOM_options_get(c->options, "lang");
517     if (val && *val)
518     {
519         yaz_log(log_details, "%p ZOOM_connection_connect lang=%s", c, val);
520         c->lang = xstrdup(val);
521     }
522     else
523         c->lang = 0;
524
525     if (host)
526     {
527         xfree(c->host_port);
528         if (portnum)
529         {
530             char hostn[128];
531             sprintf(hostn, "%.80s:%d", host, portnum);
532             c->host_port = xstrdup(hostn);
533         }
534         else
535             c->host_port = xstrdup(host);
536     }        
537
538     {
539         /*
540          * If the "<scheme>:" part of the host string is preceded by one
541          * or more comma-separated <name>=<value> pairs, these are taken
542          * to be options to be set on the connection object.  Among other
543          * applications, this facility can be used to embed authentication
544          * in a host string:
545          *          user=admin,password=secret,tcp:localhost:9999
546          */
547         char *remainder = c->host_port;
548         char *pcolon = strchr(remainder, ':');
549         char *pcomma;
550         char *pequals;
551         while ((pcomma = strchr(remainder, ',')) != 0 &&
552                (pcolon == 0 || pcomma < pcolon)) {
553             *pcomma = '\0';
554             if ((pequals = strchr(remainder, '=')) != 0) {
555                 *pequals = '\0';
556                 /*printf("# setting '%s'='%s'\n", remainder, pequals+1);*/
557                 ZOOM_connection_option_set(c, remainder, pequals+1);
558             }
559             remainder = pcomma+1;
560         }
561
562         if (remainder != c->host_port) {
563             xfree(c->host_port);
564             c->host_port = xstrdup(remainder);
565             /*printf("# reset hp='%s'\n", remainder);*/
566         }
567     }
568
569     val = ZOOM_options_get(c->options, "sru");
570     c->sru_mode = get_sru_mode_from_string(val);
571
572     xfree(c->sru_version);
573     val = ZOOM_options_get(c->options, "sru_version");
574     c->sru_version = xstrdup(val ? val : "1.2");
575
576     ZOOM_options_set(c->options, "host", c->host_port);
577
578     xfree(c->cookie_out);
579     c->cookie_out = 0;
580     val = ZOOM_options_get(c->options, "cookie");
581     if (val && *val)
582     { 
583         yaz_log(log_details, "%p ZOOM_connection_connect cookie=%s", c, val);
584         c->cookie_out = xstrdup(val);
585     }
586
587     xfree(c->client_IP);
588     c->client_IP = 0;
589     val = ZOOM_options_get(c->options, "clientIP");
590     if (val && *val)
591     {
592         yaz_log(log_details, "%p ZOOM_connection_connect clientIP=%s",
593                 c, val);
594         c->client_IP = xstrdup(val);
595     }
596
597     xfree(c->group);
598     c->group = 0;
599     val = ZOOM_options_get(c->options, "group");
600     if (val && *val)
601         c->group = xstrdup(val);
602
603     xfree(c->user);
604     c->user = 0;
605     val = ZOOM_options_get(c->options, "user");
606     if (val && *val)
607         c->user = xstrdup(val);
608
609     xfree(c->password);
610     c->password = 0;
611     val = ZOOM_options_get(c->options, "password");
612     if (!val)
613         val = ZOOM_options_get(c->options, "pass");
614
615     if (val && *val)
616         c->password = xstrdup(val);
617     
618     c->maximum_record_size =
619         ZOOM_options_get_int(c->options, "maximumRecordSize", 1024*1024);
620     c->preferred_message_size =
621         ZOOM_options_get_int(c->options, "preferredMessageSize", 1024*1024);
622
623     c->async = ZOOM_options_get_bool(c->options, "async", 0);
624     yaz_log(log_details, "%p ZOOM_connection_connect async=%d", c, c->async);
625  
626     task = ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
627
628     if (!c->async)
629     {
630         while (ZOOM_event(1, &c))
631             ;
632     }
633 }
634
635 ZOOM_API(ZOOM_query)
636     ZOOM_query_create(void)
637 {
638     ZOOM_query s = (ZOOM_query) xmalloc(sizeof(*s));
639
640     yaz_log(log_details, "%p ZOOM_query_create", s);
641     s->refcount = 1;
642     s->z_query = 0;
643     s->sort_spec = 0;
644     s->odr = odr_createmem(ODR_ENCODE);
645     s->query_string = 0;
646
647     return s;
648 }
649
650 ZOOM_API(void)
651     ZOOM_query_destroy(ZOOM_query s)
652 {
653     if (!s)
654         return;
655
656     (s->refcount)--;
657     yaz_log(log_details, "%p ZOOM_query_destroy count=%d", s, s->refcount);
658     if (s->refcount == 0)
659     {
660         odr_destroy(s->odr);
661         xfree(s);
662     }
663 }
664
665 ZOOM_API(int)
666     ZOOM_query_prefix(ZOOM_query s, const char *str)
667 {
668     s->query_string = odr_strdup(s->odr, str);
669     s->z_query = (Z_Query *) odr_malloc(s->odr, sizeof(*s->z_query));
670     s->z_query->which = Z_Query_type_1;
671     s->z_query->u.type_1 =  p_query_rpn(s->odr, str);
672     if (!s->z_query->u.type_1)
673     {
674         yaz_log(log_details, "%p ZOOM_query_prefix str=%s failed", s, str);
675         s->z_query = 0;
676         return -1;
677     }
678     yaz_log(log_details, "%p ZOOM_query_prefix str=%s", s, str);
679     return 0;
680 }
681
682 ZOOM_API(int)
683     ZOOM_query_cql(ZOOM_query s, const char *str)
684 {
685     Z_External *ext;
686
687     s->query_string = odr_strdup(s->odr, str);
688
689     ext = (Z_External *) odr_malloc(s->odr, sizeof(*ext));
690     ext->direct_reference = odr_oiddup(s->odr, yaz_oid_userinfo_cql);
691     ext->indirect_reference = 0;
692     ext->descriptor = 0;
693     ext->which = Z_External_CQL;
694     ext->u.cql = s->query_string;
695     
696     s->z_query = (Z_Query *) odr_malloc(s->odr, sizeof(*s->z_query));
697     s->z_query->which = Z_Query_type_104;
698     s->z_query->u.type_104 =  ext;
699
700     yaz_log(log_details, "%p ZOOM_query_cql str=%s", s, str);
701
702     return 0;
703 }
704
705 /*
706  * Translate the CQL string client-side into RPN which is passed to
707  * the server.  This is useful for server's that don't themselves
708  * support CQL, for which ZOOM_query_cql() is useless.  `conn' is used
709  * only as a place to stash diagnostics if compilation fails; if this
710  * information is not needed, a null pointer may be used.
711  */
712 ZOOM_API(int)
713     ZOOM_query_cql2rpn(ZOOM_query s, const char *str, ZOOM_connection conn)
714 {
715     char *rpn;
716     int ret;
717     ZOOM_connection freeme = 0;
718
719     yaz_log(log_details, "%p ZOOM_query_cql2rpn str=%s conn=%p", s, str, conn);
720     if (conn == 0)
721         conn = freeme = ZOOM_connection_create(0);
722
723     rpn = cql2pqf(conn, str);
724     if (freeme != 0)
725         ZOOM_connection_destroy(freeme);
726     if (rpn == 0)
727         return -1;
728
729     ret = ZOOM_query_prefix(s, rpn);
730     xfree(rpn);
731     return ret;
732 }
733
734 /*
735  * Analogous in every way to ZOOM_query_cql2rpn(), except that there
736  * is no analogous ZOOM_query_ccl() that just sends uninterpreted CCL
737  * to the server, as the YAZ GFS doesn't know how to handle this.
738  */
739 ZOOM_API(int)
740     ZOOM_query_ccl2rpn(ZOOM_query s, const char *str, const char *config,
741                        int *ccl_error, const char **error_string,
742                        int *error_pos)
743 {
744     int ret;
745     struct ccl_rpn_node *rpn;
746     CCL_bibset bibset = ccl_qual_mk();
747
748     if (config)
749         ccl_qual_buf(bibset, config);
750
751     rpn = ccl_find_str(bibset, str, ccl_error, error_pos);
752     if (!rpn)
753     {
754         *error_string = ccl_err_msg(*ccl_error);
755         ret = -1;
756     }
757     else
758     {
759         WRBUF wr = wrbuf_alloc();
760         ccl_pquery(wr, rpn);
761         ccl_rpn_delete(rpn);
762         ret = ZOOM_query_prefix(s, wrbuf_cstr(wr));
763         wrbuf_destroy(wr);
764     }
765     ccl_qual_rm(&bibset);
766     return ret;
767 }
768
769 ZOOM_API(int)
770     ZOOM_query_sortby(ZOOM_query s, const char *criteria)
771 {
772     s->sort_spec = yaz_sort_spec(s->odr, criteria);
773     if (!s->sort_spec)
774     {
775         yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s failed",
776                 s, criteria);
777         return -1;
778     }
779     yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s", s, criteria);
780     return 0;
781 }
782
783 static zoom_ret do_write(ZOOM_connection c);
784
785 ZOOM_API(void)
786     ZOOM_connection_destroy(ZOOM_connection c)
787 {
788     ZOOM_resultset r;
789     if (!c)
790         return;
791     yaz_log(log_api, "%p ZOOM_connection_destroy", c);
792     if (c->cs)
793         cs_close(c->cs);
794     for (r = c->resultsets; r; r = r->next)
795         r->connection = 0;
796
797     xfree(c->buf_in);
798     xfree(c->addinfo);
799     xfree(c->diagset);
800     odr_destroy(c->odr_in);
801     odr_destroy(c->odr_out);
802     if (c->odr_print)
803     {
804         odr_setprint(c->odr_print, 0); /* prevent destroy from fclose'ing */
805         odr_destroy(c->odr_print);
806     }
807     ZOOM_options_destroy(c->options);
808     ZOOM_connection_remove_tasks(c);
809     ZOOM_connection_remove_events(c);
810     xfree(c->host_port);
811     xfree(c->path);
812     xfree(c->proxy);
813     xfree(c->charset);
814     xfree(c->lang);
815     xfree(c->cookie_out);
816     xfree(c->cookie_in);
817     xfree(c->client_IP);
818     xfree(c->user);
819     xfree(c->group);
820     xfree(c->password);
821     xfree(c->sru_version);
822     xfree(c);
823 }
824
825 void ZOOM_resultset_addref(ZOOM_resultset r)
826 {
827     if (r)
828     {
829         (r->refcount)++;
830         yaz_log(log_details, "%p ZOOM_resultset_addref count=%d",
831                 r, r->refcount);
832     }
833 }
834
835 ZOOM_resultset ZOOM_resultset_create(void)
836 {
837     int i;
838     ZOOM_resultset r = (ZOOM_resultset) xmalloc(sizeof(*r));
839
840     initlog();
841
842     yaz_log(log_details, "%p ZOOM_resultset_create", r);
843     r->refcount = 1;
844     r->size = 0;
845     r->odr = odr_createmem(ODR_ENCODE);
846     r->piggyback = 1;
847     r->setname = 0;
848     r->schema = 0;
849     r->step = 0;
850     for (i = 0; i<RECORD_HASH_SIZE; i++)
851         r->record_hash[i] = 0;
852     r->r_sort_spec = 0;
853     r->query = 0;
854     r->connection = 0;
855     r->next = 0;
856     r->databaseNames = 0;
857     r->num_databaseNames = 0;
858     return r;
859 }
860
861 ZOOM_API(ZOOM_resultset)
862     ZOOM_connection_search_pqf(ZOOM_connection c, const char *q)
863 {
864     ZOOM_resultset r;
865     ZOOM_query s = ZOOM_query_create();
866
867     ZOOM_query_prefix(s, q);
868
869     r = ZOOM_connection_search(c, s);
870     ZOOM_query_destroy(s);
871     return r;
872 }
873
874 ZOOM_API(ZOOM_resultset)
875     ZOOM_connection_search(ZOOM_connection c, ZOOM_query q)
876 {
877     ZOOM_resultset r = ZOOM_resultset_create();
878     ZOOM_task task;
879     const char *cp;
880     int start, count;
881     const char *syntax, *elementSetName;
882
883     yaz_log(log_api, "%p ZOOM_connection_search set %p query %p", c, r, q);
884     r->r_sort_spec = q->sort_spec;
885     r->query = q;
886
887     r->options = ZOOM_options_create_with_parent(c->options);
888     
889     start = ZOOM_options_get_int(r->options, "start", 0);
890     count = ZOOM_options_get_int(r->options, "count", 0);
891     {
892         /* If "presentChunk" is defined use that; otherwise "step" */
893         const char *cp = ZOOM_options_get(r->options, "presentChunk");
894         r->step = ZOOM_options_get_int(r->options,
895                                        (cp != 0 ? "presentChunk": "step"), 0);
896     }
897     r->piggyback = ZOOM_options_get_bool(r->options, "piggyback", 1);
898     cp = ZOOM_options_get(r->options, "setname");
899     if (cp)
900         r->setname = xstrdup(cp);
901     cp = ZOOM_options_get(r->options, "schema");
902     if (cp)
903         r->schema = xstrdup(cp);
904
905     r->databaseNames = set_DatabaseNames(c, c->options, &r->num_databaseNames,
906                                          r->odr);
907     
908     r->connection = c;
909
910     r->next = c->resultsets;
911     c->resultsets = r;
912
913     
914
915     if (c->host_port && c->proto == PROTO_HTTP)
916     {
917         if (!c->cs)
918         {
919             yaz_log(log_details, "ZOOM_connection_search: no comstack");
920             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
921         }
922         else
923         {
924             yaz_log(log_details, "ZOOM_connection_search: reconnect");
925             c->reconnect_ok = 1;
926         }
927     }
928
929     task = ZOOM_connection_add_task(c, ZOOM_TASK_SEARCH);
930     task->u.search.resultset = r;
931     task->u.search.start = start;
932     task->u.search.count = count;
933     task->u.search.recv_search_fired = 0;
934
935     syntax = ZOOM_options_get(r->options, "preferredRecordSyntax"); 
936     task->u.search.syntax = syntax ? xstrdup(syntax) : 0;
937     elementSetName = ZOOM_options_get(r->options, "elementSetName");
938     task->u.search.elementSetName = elementSetName 
939         ? xstrdup(elementSetName) : 0;
940    
941     ZOOM_resultset_addref(r);
942
943     (q->refcount)++;
944
945     if (!c->async)
946     {
947         while (ZOOM_event(1, &c))
948             ;
949     }
950     return r;
951 }
952
953 ZOOM_API(void)
954     ZOOM_resultset_sort(ZOOM_resultset r,
955                          const char *sort_type, const char *sort_spec)
956 {
957     (void) ZOOM_resultset_sort1(r, sort_type, sort_spec);
958 }
959
960 ZOOM_API(int)
961     ZOOM_resultset_sort1(ZOOM_resultset r,
962                          const char *sort_type, const char *sort_spec)
963 {
964     ZOOM_connection c = r->connection;
965     ZOOM_task task;
966     ZOOM_query newq;
967
968     newq = ZOOM_query_create();
969     if (ZOOM_query_sortby(newq, sort_spec) < 0)
970         return -1;
971
972     yaz_log(log_api, "%p ZOOM_resultset_sort r=%p sort_type=%s sort_spec=%s",
973             r, r, sort_type, sort_spec);
974     if (!c)
975         return 0;
976
977     if (c->host_port && c->proto == PROTO_HTTP)
978     {
979         if (!c->cs)
980         {
981             yaz_log(log_details, "%p ZOOM_resultset_sort: no comstack", r);
982             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
983         }
984         else
985         {
986             yaz_log(log_details, "%p ZOOM_resultset_sort: prepare reconnect",
987                     r);
988             c->reconnect_ok = 1;
989         }
990     }
991     
992     ZOOM_resultset_cache_reset(r);
993     task = ZOOM_connection_add_task(c, ZOOM_TASK_SORT);
994     task->u.sort.resultset = r;
995     task->u.sort.q = newq;
996
997     ZOOM_resultset_addref(r);  
998
999     if (!c->async)
1000     {
1001         while (ZOOM_event(1, &c))
1002             ;
1003     }
1004
1005     return 0;
1006 }
1007
1008 ZOOM_API(void)
1009     ZOOM_resultset_cache_reset(ZOOM_resultset r)
1010 {
1011     int i;
1012     for (i = 0; i<RECORD_HASH_SIZE; i++)
1013     {
1014         ZOOM_record_cache rc;
1015         for (rc = r->record_hash[i]; rc; rc = rc->next)
1016         {
1017             if (rc->rec.wrbuf_marc)
1018                 wrbuf_destroy(rc->rec.wrbuf_marc);
1019             if (rc->rec.wrbuf_iconv)
1020                 wrbuf_destroy(rc->rec.wrbuf_iconv);
1021             if (rc->rec.wrbuf_opac)
1022                 wrbuf_destroy(rc->rec.wrbuf_opac);
1023         }
1024         r->record_hash[i] = 0;
1025     }
1026 }
1027
1028 ZOOM_API(void)
1029     ZOOM_resultset_destroy(ZOOM_resultset r)
1030 {
1031     resultset_destroy(r);
1032 }
1033
1034 static void resultset_destroy(ZOOM_resultset r)
1035 {
1036     if (!r)
1037         return;
1038     (r->refcount)--;
1039     yaz_log(log_details, "%p ZOOM_resultset_destroy r=%p count=%d",
1040             r, r, r->refcount);
1041     if (r->refcount == 0)
1042     {
1043         ZOOM_resultset_cache_reset(r);
1044
1045         if (r->connection)
1046         {
1047             /* remove ourselves from the resultsets in connection */
1048             ZOOM_resultset *rp = &r->connection->resultsets;
1049             while (1)
1050             {
1051                 assert(*rp);   /* we must be in this list!! */
1052                 if (*rp == r)
1053                 {   /* OK, we're here - take us out of it */
1054                     *rp = (*rp)->next;
1055                     break;
1056                 }
1057                 rp = &(*rp)->next;
1058             }
1059         }
1060         ZOOM_query_destroy(r->query);
1061         ZOOM_options_destroy(r->options);
1062         odr_destroy(r->odr);
1063         xfree(r->setname);
1064         xfree(r->schema);
1065         xfree(r);
1066     }
1067 }
1068
1069 ZOOM_API(size_t)
1070     ZOOM_resultset_size(ZOOM_resultset r)
1071 {
1072     yaz_log(log_details, "ZOOM_resultset_size r=%p count=%d",
1073             r, r->size);
1074     return r->size;
1075 }
1076
1077 static void do_close(ZOOM_connection c)
1078 {
1079     if (c->cs)
1080         cs_close(c->cs);
1081     c->cs = 0;
1082     ZOOM_connection_set_mask(c, 0);
1083     c->state = STATE_IDLE;
1084 }
1085
1086 static int ZOOM_test_reconnect(ZOOM_connection c)
1087 {
1088     ZOOM_Event event;
1089
1090     if (!c->reconnect_ok)
1091         return 0;
1092     do_close(c);
1093     c->reconnect_ok = 0;
1094     c->tasks->running = 0;
1095     ZOOM_connection_insert_task(c, ZOOM_TASK_CONNECT);
1096
1097     event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
1098     ZOOM_connection_put_event(c, event);
1099
1100     return 1;
1101 }
1102
1103 static void ZOOM_resultset_retrieve(ZOOM_resultset r,
1104                                     int force_sync, int start, int count)
1105 {
1106     ZOOM_task task;
1107     ZOOM_connection c;
1108     const char *cp;
1109     const char *syntax, *elementSetName;
1110
1111     if (!r)
1112         return;
1113     yaz_log(log_details, "%p ZOOM_resultset_retrieve force_sync=%d start=%d"
1114             " count=%d", r, force_sync, start, count);
1115     c = r->connection;
1116     if (!c)
1117         return;
1118
1119     if (c->host_port && c->proto == PROTO_HTTP)
1120     {
1121         if (!c->cs)
1122         {
1123             yaz_log(log_details, "%p ZOOM_resultset_retrieve: no comstack", r);
1124             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
1125         }
1126         else
1127         {
1128             yaz_log(log_details, "%p ZOOM_resultset_retrieve: prepare "
1129                     "reconnect", r);
1130             c->reconnect_ok = 1;
1131         }
1132     }
1133     task = ZOOM_connection_add_task(c, ZOOM_TASK_RETRIEVE);
1134     task->u.retrieve.resultset = r;
1135     task->u.retrieve.start = start;
1136     task->u.retrieve.count = count;
1137
1138     syntax = ZOOM_options_get(r->options, "preferredRecordSyntax"); 
1139     task->u.retrieve.syntax = syntax ? xstrdup(syntax) : 0;
1140     elementSetName = ZOOM_options_get(r->options, "elementSetName");
1141     task->u.retrieve.elementSetName = elementSetName 
1142         ? xstrdup(elementSetName) : 0;
1143
1144     cp = ZOOM_options_get(r->options, "schema");
1145     if (cp)
1146     {
1147         if (!r->schema || strcmp(r->schema, cp))
1148         {
1149             xfree(r->schema);
1150             r->schema = xstrdup(cp);
1151         }
1152     }
1153
1154     ZOOM_resultset_addref(r);
1155
1156     if (!r->connection->async || force_sync)
1157         while (r->connection && ZOOM_event(1, &r->connection))
1158             ;
1159 }
1160
1161 ZOOM_API(void)
1162     ZOOM_resultset_records(ZOOM_resultset r, ZOOM_record *recs,
1163                            size_t start, size_t count)
1164 {
1165     int force_present = 0;
1166
1167     if (!r)
1168         return ;
1169     yaz_log(log_api, "%p ZOOM_resultset_records r=%p start=%ld count=%ld",
1170             r, r, (long) start, (long) count);
1171     if (count && recs)
1172         force_present = 1;
1173     ZOOM_resultset_retrieve(r, force_present, start, count);
1174     if (force_present)
1175     {
1176         size_t i;
1177         for (i = 0; i< count; i++)
1178             recs[i] = ZOOM_resultset_record_immediate(r, i+start);
1179     }
1180 }
1181
1182 static void get_cert(ZOOM_connection c)
1183 {
1184     char *cert_buf;
1185     int cert_len;
1186     
1187     if (cs_get_peer_certificate_x509(c->cs, &cert_buf, &cert_len))
1188     {
1189         ZOOM_connection_option_setl(c, "sslPeerCert",
1190                                     cert_buf, cert_len);
1191         xfree(cert_buf);
1192     }
1193 }
1194
1195 static zoom_ret do_connect(ZOOM_connection c)
1196 {
1197     void *add;
1198     const char *effective_host;
1199
1200     if (c->proxy)
1201         effective_host = c->proxy;
1202     else
1203         effective_host = c->host_port;
1204
1205     yaz_log(log_details, "%p do_connect effective_host=%s", c, effective_host);
1206
1207     if (c->cs)
1208         cs_close(c->cs);
1209     c->cs = cs_create_host(effective_host, 0, &add);
1210
1211     if (c->cs && c->cs->protocol == PROTO_HTTP)
1212     {
1213 #if YAZ_HAVE_XML2
1214         const char *path = 0;
1215
1216         c->proto = PROTO_HTTP;
1217         cs_get_host_args(c->host_port, &path);
1218         xfree(c->path);
1219         c->path = (char*) xmalloc(strlen(path)+2);
1220         c->path[0] = '/';
1221         strcpy(c->path+1, path);
1222 #else
1223         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_PROTOCOL, "SRW");
1224         do_close(c);
1225         return zoom_complete;
1226 #endif
1227     }
1228     if (c->cs)
1229     {
1230         int ret = cs_connect(c->cs, add);
1231         if (ret == 0)
1232         {
1233             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
1234             ZOOM_connection_put_event(c, event);
1235             get_cert(c);
1236             if (c->proto == PROTO_Z3950)
1237                 ZOOM_connection_send_init(c);
1238             else
1239             {
1240                 /* no init request for SRW .. */
1241                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
1242                 ZOOM_connection_remove_task(c);
1243                 ZOOM_connection_set_mask(c, 0);
1244                 ZOOM_connection_exec_task(c);
1245             }
1246             c->state = STATE_ESTABLISHED;
1247             return zoom_pending;
1248         }
1249         else if (ret > 0)
1250         {
1251             int mask = ZOOM_SELECT_EXCEPT;
1252             if (c->cs->io_pending & CS_WANT_WRITE)
1253                 mask += ZOOM_SELECT_WRITE;
1254             if (c->cs->io_pending & CS_WANT_READ)
1255                 mask += ZOOM_SELECT_READ;
1256             ZOOM_connection_set_mask(c, mask);
1257             c->state = STATE_CONNECTING; 
1258             return zoom_pending;
1259         }
1260     }
1261     c->state = STATE_IDLE;
1262     set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
1263     return zoom_complete;
1264 }
1265
1266 static void otherInfo_attach(ZOOM_connection c, Z_APDU *a, ODR out)
1267 {
1268     int i;
1269     for (i = 0; i<200; i++)
1270     {
1271         size_t len;
1272         Odr_oid *oid;
1273         Z_OtherInformation **oi;
1274         char buf[80];
1275         const char *val;
1276         const char *cp;
1277
1278         sprintf(buf, "otherInfo%d", i);
1279         val = ZOOM_options_get(c->options, buf);
1280         if (!val)
1281             break;
1282         cp = strchr(val, ':');
1283         if (!cp)
1284             continue;
1285         len = cp - val;
1286         if (len >= sizeof(buf))
1287             len = sizeof(buf)-1;
1288         memcpy(buf, val, len);
1289         buf[len] = '\0';
1290         
1291         oid = yaz_string_to_oid_odr(yaz_oid_std(), CLASS_USERINFO,
1292                                     buf, out);
1293         if (!oid)
1294             continue;
1295         
1296         yaz_oi_APDU(a, &oi);
1297         yaz_oi_set_string_oid(oi, out, oid, 1, cp+1);
1298     }
1299 }
1300
1301 static int encode_APDU(ZOOM_connection c, Z_APDU *a, ODR out)
1302 {
1303     assert(a);
1304     if (c->cookie_out)
1305     {
1306         Z_OtherInformation **oi;
1307         yaz_oi_APDU(a, &oi);
1308         yaz_oi_set_string_oid(oi, out, yaz_oid_userinfo_cookie, 
1309                               1, c->cookie_out);
1310     }
1311     if (c->client_IP)
1312     {
1313         Z_OtherInformation **oi;
1314         yaz_oi_APDU(a, &oi);
1315         yaz_oi_set_string_oid(oi, out, yaz_oid_userinfo_client_ip, 
1316                               1, c->client_IP);
1317     }
1318     otherInfo_attach(c, a, out);
1319     if (!z_APDU(out, &a, 0, 0))
1320     {
1321         FILE *outf = fopen("/tmp/apdu.txt", "a");
1322         if (a && outf)
1323         {
1324             ODR odr_pr = odr_createmem(ODR_PRINT);
1325             fprintf(outf, "a=%p\n", a);
1326             odr_setprint(odr_pr, outf);
1327             z_APDU(odr_pr, &a, 0, 0);
1328             odr_destroy(odr_pr);
1329         }
1330         yaz_log(log_api, "%p encoding_APDU: encoding failed", c);
1331         set_ZOOM_error(c, ZOOM_ERROR_ENCODE, 0);
1332         odr_reset(out);
1333         return -1;
1334     }
1335     if (c->odr_print)
1336         z_APDU(c->odr_print, &a, 0, 0);
1337     yaz_log(log_details, "%p encoding_APDU encoding OK", c);
1338     return 0;
1339 }
1340
1341 static zoom_ret send_APDU(ZOOM_connection c, Z_APDU *a)
1342 {
1343     ZOOM_Event event;
1344     assert(a);
1345     if (encode_APDU(c, a, c->odr_out))
1346         return zoom_complete;
1347     yaz_log(log_details, "%p send APDU type=%d", c, a->which);
1348     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1349     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
1350     ZOOM_connection_put_event(c, event);
1351     odr_reset(c->odr_out);
1352     return do_write(c);
1353 }
1354
1355 /* returns 1 if PDU was sent OK (still pending )
1356    0 if PDU was not sent OK (nothing to wait for) 
1357 */
1358
1359 static zoom_ret ZOOM_connection_send_init(ZOOM_connection c)
1360 {
1361     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_initRequest);
1362     Z_InitRequest *ireq = apdu->u.initRequest;
1363     Z_IdAuthentication *auth = (Z_IdAuthentication *)
1364         odr_malloc(c->odr_out, sizeof(*auth));
1365
1366     ODR_MASK_SET(ireq->options, Z_Options_search);
1367     ODR_MASK_SET(ireq->options, Z_Options_present);
1368     ODR_MASK_SET(ireq->options, Z_Options_scan);
1369     ODR_MASK_SET(ireq->options, Z_Options_sort);
1370     ODR_MASK_SET(ireq->options, Z_Options_extendedServices);
1371     ODR_MASK_SET(ireq->options, Z_Options_namedResultSets);
1372     
1373     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_1);
1374     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_2);
1375     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_3);
1376     
1377     ireq->implementationId =
1378         odr_prepend(c->odr_out,
1379                     ZOOM_options_get(c->options, "implementationId"),
1380                     ireq->implementationId);
1381     
1382     ireq->implementationName = 
1383         odr_prepend(c->odr_out,
1384                     ZOOM_options_get(c->options, "implementationName"),
1385                     odr_prepend(c->odr_out, "ZOOM-C",
1386                                 ireq->implementationName));
1387     
1388     ireq->implementationVersion = 
1389         odr_prepend(c->odr_out,
1390                     ZOOM_options_get(c->options, "implementationVersion"),
1391                                 ireq->implementationVersion);
1392     
1393     *ireq->maximumRecordSize = c->maximum_record_size;
1394     *ireq->preferredMessageSize = c->preferred_message_size;
1395     
1396     if (c->group || c->password)
1397     {
1398         Z_IdPass *pass = (Z_IdPass *) odr_malloc(c->odr_out, sizeof(*pass));
1399         pass->groupId = odr_strdup_null(c->odr_out, c->group);
1400         pass->userId = odr_strdup_null(c->odr_out, c->user);
1401         pass->password = odr_strdup_null(c->odr_out, c->password);
1402         auth->which = Z_IdAuthentication_idPass;
1403         auth->u.idPass = pass;
1404         ireq->idAuthentication = auth;
1405     }
1406     else if (c->user)
1407     {
1408         auth->which = Z_IdAuthentication_open;
1409         auth->u.open = odr_strdup(c->odr_out, c->user);
1410         ireq->idAuthentication = auth;
1411     }
1412     if (c->proxy)
1413     {
1414         yaz_oi_set_string_oid(&ireq->otherInfo, c->odr_out,
1415                               yaz_oid_userinfo_proxy, 1, c->host_port);
1416     }
1417     if (c->charset || c->lang)
1418     {
1419         Z_OtherInformation **oi;
1420         Z_OtherInformationUnit *oi_unit;
1421         
1422         yaz_oi_APDU(apdu, &oi);
1423         
1424         if ((oi_unit = yaz_oi_update(oi, c->odr_out, NULL, 0, 0)))
1425         {
1426             ODR_MASK_SET(ireq->options, Z_Options_negotiationModel);
1427             oi_unit->which = Z_OtherInfo_externallyDefinedInfo;
1428             oi_unit->information.externallyDefinedInfo =
1429                 yaz_set_proposal_charneg_list(c->odr_out, " ",
1430                                               c->charset, c->lang, 1);
1431         }
1432     }
1433     assert(apdu);
1434     return send_APDU(c, apdu);
1435 }
1436
1437 #if YAZ_HAVE_XML2
1438 static zoom_ret send_srw(ZOOM_connection c, Z_SRW_PDU *sr)
1439 {
1440     Z_GDU *gdu;
1441     ZOOM_Event event;
1442     const char *database =  ZOOM_options_get(c->options, "databaseName");
1443     char *fdatabase = 0;
1444     
1445     if (database)
1446     {
1447         fdatabase = (char *) odr_malloc(c->odr_out, strlen(database)+2);
1448         strcpy(fdatabase, "/");
1449         strcat(fdatabase, database);
1450     }
1451     gdu = z_get_HTTP_Request_host_path(c->odr_out, c->host_port,
1452                                        fdatabase ? fdatabase : c->path);
1453
1454     if (c->sru_mode == zoom_sru_get)
1455     {
1456         yaz_sru_get_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1457     }
1458     else if (c->sru_mode == zoom_sru_post)
1459     {
1460         yaz_sru_post_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1461     }
1462     else if (c->sru_mode == zoom_sru_soap)
1463     {
1464         yaz_sru_soap_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1465     }
1466     if (!z_GDU(c->odr_out, &gdu, 0, 0))
1467         return zoom_complete;
1468     if (c->odr_print)
1469         z_GDU(c->odr_print, &gdu, 0, 0);
1470     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1471         
1472     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
1473     ZOOM_connection_put_event(c, event);
1474     odr_reset(c->odr_out);
1475     return do_write(c);
1476 }
1477 #endif
1478
1479 #if YAZ_HAVE_XML2
1480 static Z_SRW_PDU *ZOOM_srw_get_pdu(ZOOM_connection c, int type)
1481 {
1482     Z_SRW_PDU *sr = yaz_srw_get_pdu(c->odr_out, type, c->sru_version);
1483     sr->username = c->user;
1484     sr->password = c->password;
1485     return sr;
1486 }
1487 #endif
1488
1489 #if YAZ_HAVE_XML2
1490 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1491 {
1492     int i;
1493     int *start, *count;
1494     ZOOM_resultset resultset = 0;
1495     Z_SRW_PDU *sr = 0;
1496     const char *option_val = 0;
1497
1498     if (c->error)                  /* don't continue on error */
1499         return zoom_complete;
1500     assert(c->tasks);
1501     switch(c->tasks->which)
1502     {
1503     case ZOOM_TASK_SEARCH:
1504         resultset = c->tasks->u.search.resultset;
1505         if (!resultset->setname)
1506             resultset->setname = xstrdup("default");
1507         ZOOM_options_set(resultset->options, "setname", resultset->setname);
1508         start = &c->tasks->u.search.start;
1509         count = &c->tasks->u.search.count;
1510         break;
1511     case ZOOM_TASK_RETRIEVE:
1512         resultset = c->tasks->u.retrieve.resultset;
1513
1514         start = &c->tasks->u.retrieve.start;
1515         count = &c->tasks->u.retrieve.count;
1516
1517         if (*start >= resultset->size)
1518             return zoom_complete;
1519         if (*start + *count > resultset->size)
1520             *count = resultset->size - *start;
1521
1522         for (i = 0; i < *count; i++)
1523         {
1524             ZOOM_record rec =
1525                 record_cache_lookup(resultset, i + *start,
1526                                     c->tasks->u.retrieve.syntax,
1527                                     c->tasks->u.retrieve.elementSetName);
1528             if (!rec)
1529                 break;
1530             else
1531             {
1532                 ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
1533                 ZOOM_connection_put_event(c, event);
1534             }
1535         }
1536         *start += i;
1537         *count -= i;
1538
1539         if (*count == 0)
1540             return zoom_complete;
1541         break;
1542     default:
1543         return zoom_complete;
1544     }
1545     assert(resultset->query);
1546         
1547     sr = ZOOM_srw_get_pdu(c, Z_SRW_searchRetrieve_request);
1548     if (resultset->query->z_query->which == Z_Query_type_104
1549         && resultset->query->z_query->u.type_104->which == Z_External_CQL)
1550     {
1551         sr->u.request->query_type = Z_SRW_query_type_cql;
1552         sr->u.request->query.cql =resultset->query->z_query->u.type_104->u.cql;
1553     }
1554     else if (resultset->query->z_query->which == Z_Query_type_1 &&
1555              resultset->query->z_query->u.type_1)
1556     {
1557         sr->u.request->query_type = Z_SRW_query_type_pqf;
1558         sr->u.request->query.pqf = resultset->query->query_string;
1559     }
1560     else
1561     {
1562         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
1563         return zoom_complete;
1564     }
1565     sr->u.request->startRecord = odr_intdup(c->odr_out, *start + 1);
1566     sr->u.request->maximumRecords = odr_intdup(
1567         c->odr_out, (resultset->step > 0 && resultset->step < *count) ? 
1568         resultset->step : *count);
1569     sr->u.request->recordSchema = resultset->schema;
1570     
1571     option_val = ZOOM_resultset_option_get(resultset, "recordPacking");
1572     if (option_val)
1573         sr->u.request->recordPacking = odr_strdup(c->odr_out, option_val);
1574
1575     option_val = ZOOM_resultset_option_get(resultset, "extraArgs");
1576     yaz_encode_sru_extra(sr, c->odr_out, option_val);
1577     return send_srw(c, sr);
1578 }
1579 #else
1580 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1581 {
1582     return zoom_complete;
1583 }
1584 #endif
1585
1586 static zoom_ret ZOOM_connection_send_search(ZOOM_connection c)
1587 {
1588     ZOOM_resultset r;
1589     int lslb, ssub, mspn;
1590     const char *syntax;
1591     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_searchRequest);
1592     Z_SearchRequest *search_req = apdu->u.searchRequest;
1593     const char *elementSetName;
1594     const char *smallSetElementSetName;
1595     const char *mediumSetElementSetName;
1596
1597     assert(c->tasks);
1598     assert(c->tasks->which == ZOOM_TASK_SEARCH);
1599
1600     r = c->tasks->u.search.resultset;
1601
1602     yaz_log(log_details, "%p ZOOM_connection_send_search set=%p", c, r);
1603
1604     elementSetName =
1605         ZOOM_options_get(r->options, "elementSetName");
1606     smallSetElementSetName  =
1607         ZOOM_options_get(r->options, "smallSetElementSetName");
1608     mediumSetElementSetName =
1609         ZOOM_options_get(r->options, "mediumSetElementSetName");
1610
1611     if (!smallSetElementSetName)
1612         smallSetElementSetName = elementSetName;
1613
1614     if (!mediumSetElementSetName)
1615         mediumSetElementSetName = elementSetName;
1616
1617     assert(r);
1618     assert(r->query);
1619
1620     /* prepare query for the search request */
1621     search_req->query = r->query->z_query;
1622     if (!search_req->query)
1623     {
1624         set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
1625         return zoom_complete;
1626     }
1627     if (r->query->z_query->which == Z_Query_type_1 || 
1628         r->query->z_query->which == Z_Query_type_101)
1629     {
1630         const char *cp = ZOOM_options_get(r->options, "rpnCharset");
1631         if (cp)
1632         {
1633             yaz_iconv_t cd = yaz_iconv_open(cp, "UTF-8");
1634             if (cd)
1635             {
1636                 search_req->query = yaz_copy_Z_Query(search_req->query,
1637                                                      c->odr_out);
1638                 
1639                 yaz_query_charset_convert_rpnquery(search_req->query->u.type_1,
1640                                                    c->odr_out, cd);
1641                 yaz_iconv_close(cd);
1642             }
1643         }
1644     }
1645     search_req->databaseNames = r->databaseNames;
1646     search_req->num_databaseNames = r->num_databaseNames;
1647
1648     /* get syntax (no need to provide unless piggyback is in effect) */
1649     syntax = c->tasks->u.search.syntax;
1650
1651     lslb = ZOOM_options_get_int(r->options, "largeSetLowerBound", -1);
1652     ssub = ZOOM_options_get_int(r->options, "smallSetUpperBound", -1);
1653     mspn = ZOOM_options_get_int(r->options, "mediumSetPresentNumber", -1);
1654     if (lslb != -1 && ssub != -1 && mspn != -1)
1655     {
1656         /* So're a Z39.50 expert? Let's hope you don't do sort */
1657         *search_req->largeSetLowerBound = lslb;
1658         *search_req->smallSetUpperBound = ssub;
1659         *search_req->mediumSetPresentNumber = mspn;
1660     }
1661     else if (c->tasks->u.search.start == 0 && c->tasks->u.search.count > 0
1662              && r->piggyback && !r->r_sort_spec && !r->schema)
1663     {
1664         /* Regular piggyback - do it unless we're going to do sort */
1665         *search_req->largeSetLowerBound = 2000000000;
1666         *search_req->smallSetUpperBound = 1;
1667         *search_req->mediumSetPresentNumber = 
1668             r->step>0 ? r->step : c->tasks->u.search.count;
1669     }
1670     else
1671     {
1672         /* non-piggyback. Need not provide elementsets or syntaxes .. */
1673         smallSetElementSetName = 0;
1674         mediumSetElementSetName = 0;
1675         syntax = 0;
1676     }
1677     if (smallSetElementSetName && *smallSetElementSetName)
1678     {
1679         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1680             odr_malloc(c->odr_out, sizeof(*esn));
1681         
1682         esn->which = Z_ElementSetNames_generic;
1683         esn->u.generic = odr_strdup(c->odr_out, smallSetElementSetName);
1684         search_req->smallSetElementSetNames = esn;
1685     }
1686     if (mediumSetElementSetName && *mediumSetElementSetName)
1687     {
1688         Z_ElementSetNames *esn =(Z_ElementSetNames *)
1689             odr_malloc(c->odr_out, sizeof(*esn));
1690         
1691         esn->which = Z_ElementSetNames_generic;
1692         esn->u.generic = odr_strdup(c->odr_out, mediumSetElementSetName);
1693         search_req->mediumSetElementSetNames = esn;
1694     }
1695     if (syntax)
1696         search_req->preferredRecordSyntax =
1697             zoom_yaz_str_to_z3950oid(c, CLASS_RECSYN, syntax);
1698     
1699     if (!r->setname)
1700     {
1701         if (c->support_named_resultsets)
1702         {
1703             char setname[14];
1704             int ord;
1705             /* find the lowest unused ordinal so that we re-use
1706                result sets on the server. */
1707             for (ord = 1; ; ord++)
1708             {
1709                 ZOOM_resultset rp;
1710                 sprintf(setname, "%d", ord);
1711                 for (rp = c->resultsets; rp; rp = rp->next)
1712                     if (rp->setname && !strcmp(rp->setname, setname))
1713                         break;
1714                 if (!rp)
1715                     break;
1716             }
1717             r->setname = xstrdup(setname);
1718             yaz_log(log_details, "%p ZOOM_connection_send_search: allocating "
1719                     "set %s", c, r->setname);
1720         }
1721         else
1722         {
1723             yaz_log(log_details, "%p ZOOM_connection_send_search: using "
1724                     "default set", c);
1725             r->setname = xstrdup("default");
1726         }
1727         ZOOM_options_set(r->options, "setname", r->setname);
1728     }
1729     search_req->resultSetName = odr_strdup(c->odr_out, r->setname);
1730     return send_APDU(c, apdu);
1731 }
1732
1733 static void response_default_diag(ZOOM_connection c, Z_DefaultDiagFormat *r)
1734 {
1735     char oid_name_buf[OID_STR_MAX];
1736     const char *oid_name;
1737     char *addinfo = 0;
1738
1739     oid_name = yaz_oid_to_string_buf(r->diagnosticSetId, 0, oid_name_buf);
1740     switch (r->which)
1741     {
1742     case Z_DefaultDiagFormat_v2Addinfo:
1743         addinfo = r->u.v2Addinfo;
1744         break;
1745     case Z_DefaultDiagFormat_v3Addinfo:
1746         addinfo = r->u.v3Addinfo;
1747         break;
1748     }
1749     xfree(c->addinfo);
1750     c->addinfo = 0;
1751     set_dset_error(c, *r->condition, oid_name, addinfo, 0);
1752 }
1753
1754 static void response_diag(ZOOM_connection c, Z_DiagRec *p)
1755 {
1756     if (p->which != Z_DiagRec_defaultFormat)
1757         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1758     else
1759         response_default_diag(c, p->u.defaultFormat);
1760 }
1761
1762 ZOOM_API(ZOOM_record)
1763     ZOOM_record_clone(ZOOM_record srec)
1764 {
1765     char *buf;
1766     int size;
1767     ODR odr_enc;
1768     ZOOM_record nrec;
1769
1770     odr_enc = odr_createmem(ODR_ENCODE);
1771     if (!z_NamePlusRecord(odr_enc, &srec->npr, 0, 0))
1772         return 0;
1773     buf = odr_getbuf(odr_enc, &size, 0);
1774     
1775     nrec = (ZOOM_record) xmalloc(sizeof(*nrec));
1776     nrec->odr = odr_createmem(ODR_DECODE);
1777     nrec->wrbuf_marc = 0;
1778     nrec->wrbuf_iconv = 0;
1779     nrec->wrbuf_opac = 0;
1780     odr_setbuf(nrec->odr, buf, size, 0);
1781     z_NamePlusRecord(nrec->odr, &nrec->npr, 0, 0);
1782     
1783     nrec->schema = odr_strdup_null(nrec->odr, srec->schema);
1784     nrec->diag_uri = odr_strdup_null(nrec->odr, srec->diag_uri);
1785     nrec->diag_message = odr_strdup_null(nrec->odr, srec->diag_message);
1786     nrec->diag_details = odr_strdup_null(nrec->odr, srec->diag_details);
1787     nrec->diag_set = odr_strdup_null(nrec->odr, srec->diag_set);
1788     odr_destroy(odr_enc);
1789     return nrec;
1790 }
1791
1792 ZOOM_API(ZOOM_record)
1793     ZOOM_resultset_record_immediate(ZOOM_resultset s,size_t pos)
1794 {
1795     const char *syntax =
1796         ZOOM_options_get(s->options, "preferredRecordSyntax"); 
1797     const char *elementSetName =
1798         ZOOM_options_get(s->options, "elementSetName");
1799
1800     return record_cache_lookup(s, pos, syntax, elementSetName);
1801 }
1802
1803 ZOOM_API(ZOOM_record)
1804     ZOOM_resultset_record(ZOOM_resultset r, size_t pos)
1805 {
1806     ZOOM_record rec = ZOOM_resultset_record_immediate(r, pos);
1807
1808     if (!rec)
1809     {
1810         /*
1811          * MIKE: I think force_sync should always be zero, but I don't
1812          * want to make this change until I get the go-ahead from
1813          * Adam, in case something depends on the old synchronous
1814          * behaviour.
1815          */
1816         int force_sync = 1;
1817         if (getenv("ZOOM_RECORD_NO_FORCE_SYNC")) force_sync = 0;
1818         ZOOM_resultset_retrieve(r, force_sync, pos, 1);
1819         rec = ZOOM_resultset_record_immediate(r, pos);
1820     }
1821     return rec;
1822 }
1823
1824 ZOOM_API(void)
1825     ZOOM_record_destroy(ZOOM_record rec)
1826 {
1827     if (!rec)
1828         return;
1829     if (rec->wrbuf_marc)
1830         wrbuf_destroy(rec->wrbuf_marc);
1831     if (rec->wrbuf_iconv)
1832         wrbuf_destroy(rec->wrbuf_iconv);
1833     if (rec->wrbuf_opac)
1834         wrbuf_destroy(rec->wrbuf_opac);
1835     odr_destroy(rec->odr);
1836     xfree(rec);
1837 }
1838
1839 static const char *marc_iconv_return(ZOOM_record rec, int marc_type,
1840                                      int *len,
1841                                      const char *buf, int sz,
1842                                      const char *record_charset)
1843 {
1844     char to[40];
1845     char from[40];
1846     yaz_iconv_t cd = 0;
1847     yaz_marc_t mt = yaz_marc_create();
1848
1849     *from = '\0';
1850     strcpy(to, "UTF-8");
1851     if (record_charset && *record_charset)
1852     {
1853         /* Use "from,to" or just "from" */
1854         const char *cp = strchr(record_charset, ',');
1855         int clen = strlen(record_charset);
1856         if (cp && cp[1])
1857         {
1858             strncpy( to, cp+1, sizeof(to)-1);
1859             to[sizeof(to)-1] = '\0';
1860             clen = cp - record_charset;
1861         }
1862         if (clen > sizeof(from)-1)
1863             clen = sizeof(from)-1;
1864         
1865         if (clen)
1866             strncpy(from, record_charset, clen);
1867         from[clen] = '\0';
1868     }
1869
1870     if (*from && *to)
1871     {
1872         cd = yaz_iconv_open(to, from);
1873         yaz_marc_iconv(mt, cd);
1874     }
1875
1876     yaz_marc_xml(mt, marc_type);
1877     if (!rec->wrbuf_marc)
1878         rec->wrbuf_marc = wrbuf_alloc();
1879     wrbuf_rewind(rec->wrbuf_marc);
1880     if (yaz_marc_decode_wrbuf(mt, buf, sz, rec->wrbuf_marc) > 0)
1881     {
1882         yaz_marc_destroy(mt);
1883         if (cd)
1884             yaz_iconv_close(cd);
1885         if (len)
1886             *len = wrbuf_len(rec->wrbuf_marc);
1887         return wrbuf_cstr(rec->wrbuf_marc);
1888     }
1889     yaz_marc_destroy(mt);
1890     if (cd)
1891         yaz_iconv_close(cd);
1892     return 0;
1893 }
1894
1895 static const char *record_iconv_return(ZOOM_record rec, int *len,
1896                                        const char *buf, int sz,
1897                                        const char *record_charset)
1898 {
1899     char to[40];
1900     char from[40];
1901     yaz_iconv_t cd = 0;
1902
1903     *from = '\0';
1904     strcpy(to, "UTF-8");
1905
1906     if (record_charset && *record_charset)
1907     {
1908         /* Use "from,to" or just "from" */
1909         const char *cp = strchr(record_charset, ',');
1910         int clen = strlen(record_charset);
1911         if (cp && cp[1])
1912         {
1913             strncpy( to, cp+1, sizeof(to)-1);
1914             to[sizeof(to)-1] = '\0';
1915             clen = cp - record_charset;
1916         }
1917         if (clen > sizeof(from)-1)
1918             clen = sizeof(from)-1;
1919         
1920         if (clen)
1921             strncpy(from, record_charset, clen);
1922         from[clen] = '\0';
1923     }
1924
1925     if (*from && *to && (cd = yaz_iconv_open(to, from)))
1926     {
1927         if (!rec->wrbuf_iconv)
1928             rec->wrbuf_iconv = wrbuf_alloc();
1929
1930         wrbuf_rewind(rec->wrbuf_iconv);
1931
1932         wrbuf_iconv_write(rec->wrbuf_iconv, cd, buf, sz);
1933         wrbuf_iconv_reset(rec->wrbuf_iconv, cd);
1934
1935         buf = wrbuf_cstr(rec->wrbuf_iconv);
1936         sz = wrbuf_len(rec->wrbuf_iconv);
1937         yaz_iconv_close(cd);
1938     }
1939     if (len)
1940         *len = sz;
1941     return buf;
1942 }
1943
1944
1945 ZOOM_API(int)
1946     ZOOM_record_error(ZOOM_record rec, const char **cp,
1947                       const char **addinfo, const char **diagset)
1948 {
1949     Z_NamePlusRecord *npr;
1950     
1951     if (!rec)
1952         return 0;
1953
1954     npr = rec->npr;
1955     if (rec->diag_uri)
1956     {
1957         if (cp)
1958             *cp = rec->diag_message;
1959         if (addinfo)
1960             *addinfo = rec->diag_details;
1961         if (diagset)
1962             *diagset = rec->diag_set;
1963         return uri_to_code(rec->diag_uri);
1964     }
1965     if (npr && npr->which == Z_NamePlusRecord_surrogateDiagnostic)
1966     {
1967         Z_DiagRec *diag_rec = npr->u.surrogateDiagnostic;
1968         int error = YAZ_BIB1_UNSPECIFIED_ERROR;
1969         const char *add = 0;
1970
1971         if (diag_rec->which == Z_DiagRec_defaultFormat)
1972         {
1973             Z_DefaultDiagFormat *ddf = diag_rec->u.defaultFormat;
1974             oid_class oclass;
1975     
1976             error = *ddf->condition;
1977             switch (ddf->which)
1978             {
1979             case Z_DefaultDiagFormat_v2Addinfo:
1980                 add = ddf->u.v2Addinfo;
1981                 break;
1982             case Z_DefaultDiagFormat_v3Addinfo:
1983                 add = ddf->u.v3Addinfo;
1984                 break;
1985             }
1986             if (diagset)
1987                 *diagset =
1988                     yaz_oid_to_string(yaz_oid_std(),
1989                                       ddf->diagnosticSetId, &oclass);
1990         }
1991         else
1992         {
1993             if (diagset)
1994                 *diagset = "Bib-1";
1995         }
1996         if (addinfo)
1997             *addinfo = add ? add : "";
1998         if (cp)
1999             *cp = diagbib1_str(error);
2000         return error;
2001     }
2002     return 0;
2003 }
2004
2005 ZOOM_API(const char *)
2006     ZOOM_record_get(ZOOM_record rec, const char *type_spec, int *len)
2007 {
2008     char type[40];
2009     char charset[40];
2010     char xpath[512];
2011     const char *cp;
2012     int i;
2013     Z_NamePlusRecord *npr;
2014     
2015     if (len)
2016         *len = 0; /* default return */
2017         
2018     if (!rec)
2019         return 0;
2020     npr = rec->npr;
2021     if (!npr)
2022         return 0;
2023
2024     cp = type_spec;
2025     for (i = 0; cp[i] && i < sizeof(type)-1; i++)
2026     {
2027         if (cp[i] == ';' || cp[i] == ' ')
2028             break;
2029         type[i] = cp[i];
2030     }
2031     type[i] = '\0';
2032     charset[0] = '\0';
2033     while (type_spec[i] == ';')
2034     {
2035         i++;
2036         while (type_spec[i] == ' ')
2037             i++;
2038         if (!strncmp(type_spec+i, "charset=", 8))
2039         {
2040             int j = 0;
2041             i = i + 8; /* skip charset= */
2042             for (j = 0; type_spec[i]  && j < sizeof(charset)-1; i++, j++)
2043             {
2044                 if (type_spec[i] == ';' || type_spec[i] == ' ')
2045                     break;
2046                 charset[j] = cp[i];
2047             }
2048             charset[j] = '\0';
2049         }
2050         else if (!strncmp(type_spec+i, "xpath=", 6))
2051         {
2052             int j = 0; 
2053             i = i + 6;
2054             for (j = 0; type_spec[i] && j < sizeof(xpath)-1; i++, j++)
2055                 xpath[j] = cp[i];
2056             xpath[j] = '\0';
2057         } 
2058         while (type_spec[i] == ' ')
2059             i++;
2060     }
2061     if (!strcmp(type, "database"))
2062     {
2063         if (len)
2064             *len = (npr->databaseName ? strlen(npr->databaseName) : 0);
2065         return npr->databaseName;
2066     }
2067     else if (!strcmp(type, "schema"))
2068     {
2069         if (len)
2070             *len = rec->schema ? strlen(rec->schema) : 0;
2071         return rec->schema;
2072     }
2073     else if (!strcmp(type, "syntax"))
2074     {
2075         const char *desc = 0;   
2076         if (npr->which == Z_NamePlusRecord_databaseRecord)
2077         {
2078             Z_External *r = (Z_External *) npr->u.databaseRecord;
2079             desc = yaz_oid_to_string(yaz_oid_std(), r->direct_reference, 0);
2080         }
2081         if (!desc)
2082             desc = "none";
2083         if (len)
2084             *len = strlen(desc);
2085         return desc;
2086     }
2087     if (npr->which != Z_NamePlusRecord_databaseRecord)
2088         return 0;
2089
2090     /* from now on - we have a database record .. */
2091     if (!strcmp(type, "render"))
2092     {
2093         Z_External *r = (Z_External *) npr->u.databaseRecord;
2094         const Odr_oid *oid = r->direct_reference;
2095
2096         /* render bibliographic record .. */
2097         if (r->which == Z_External_OPAC)
2098         {
2099             r = r->u.opac->bibliographicRecord;
2100             if (!r)
2101                 return 0;
2102             oid = r->direct_reference;
2103         }
2104         if (r->which == Z_External_sutrs)
2105             return record_iconv_return(rec, len,
2106                                        (char*) r->u.sutrs->buf,
2107                                        r->u.sutrs->len,
2108                                        charset);
2109         else if (r->which == Z_External_octet)
2110         {
2111             if (yaz_oid_is_iso2709(oid))
2112             {
2113                 const char *ret_buf = marc_iconv_return(
2114                     rec, YAZ_MARC_LINE, len,
2115                     (const char *) r->u.octet_aligned->buf,
2116                     r->u.octet_aligned->len,
2117                     charset);
2118                 if (ret_buf)
2119                     return ret_buf;
2120             }
2121             return record_iconv_return(rec, len,
2122                                        (const char *) r->u.octet_aligned->buf,
2123                                        r->u.octet_aligned->len,
2124                                        charset);
2125         }
2126         else if (r->which == Z_External_grs1)
2127         {
2128             if (!rec->wrbuf_marc)
2129                 rec->wrbuf_marc = wrbuf_alloc();
2130             wrbuf_rewind(rec->wrbuf_marc);
2131             yaz_display_grs1(rec->wrbuf_marc, r->u.grs1, 0);
2132             return record_iconv_return(rec, len,
2133                                        wrbuf_buf(rec->wrbuf_marc),
2134                                        wrbuf_len(rec->wrbuf_marc),
2135                                        charset);
2136         }
2137         return 0;
2138     }
2139     else if (!strcmp(type, "xml"))
2140     {
2141         Z_External *r = (Z_External *) npr->u.databaseRecord;
2142         const Odr_oid *oid = r->direct_reference;
2143
2144         /* render bibliographic record .. */
2145         if (r->which == Z_External_OPAC)
2146         {
2147             r = r->u.opac->bibliographicRecord;
2148             if (!r)
2149                 return 0;
2150             oid = r->direct_reference;
2151         }
2152         
2153         if (r->which == Z_External_sutrs)
2154             return record_iconv_return(rec, len,
2155                                        (const char *) r->u.sutrs->buf,
2156                                        r->u.sutrs->len,
2157                                        charset);
2158         else if (r->which == Z_External_octet)
2159         {
2160             if (yaz_oid_is_iso2709(oid))
2161             {
2162                 const char *ret_buf = marc_iconv_return(
2163                     rec, YAZ_MARC_MARCXML, len,
2164                     (const char *) r->u.octet_aligned->buf,
2165                     r->u.octet_aligned->len,
2166                     charset);
2167                 if (ret_buf)
2168                     return ret_buf;
2169             }
2170             return record_iconv_return(rec, len,
2171                                        (const char *) r->u.octet_aligned->buf,
2172                                        r->u.octet_aligned->len,
2173                                        charset);
2174         }
2175         else if (r->which == Z_External_grs1)
2176         {
2177             if (len) *len = 5;
2178             return "GRS-1";
2179         }
2180         return 0;
2181     }
2182     else if (!strcmp(type, "raw"))
2183     {
2184         Z_External *r = (Z_External *) npr->u.databaseRecord;
2185         const Odr_oid *oid = r->direct_reference;
2186         
2187         if (r->which == Z_External_sutrs)
2188         {
2189             return record_iconv_return(rec, len,
2190                                        (const char *) r->u.sutrs->buf,
2191                                        r->u.sutrs->len,
2192                                        charset);
2193         }
2194         else if (r->which == Z_External_octet)
2195         {
2196             if (yaz_oid_is_iso2709(oid) && *charset)
2197             {
2198                 const char *ret_buf = marc_iconv_return(
2199                     rec, YAZ_MARC_ISO2709, len,
2200                     (const char *) r->u.octet_aligned->buf,
2201                     r->u.octet_aligned->len,
2202                     charset);
2203                 return ret_buf;
2204             }
2205             return record_iconv_return(rec, len,
2206                                        (const char *) r->u.octet_aligned->buf,
2207                                        r->u.octet_aligned->len,
2208                                        charset);
2209         }
2210         else /* grs-1, explain, OPAC, ... */
2211         {
2212             if (len) *len = -1;
2213             return (const char *) npr->u.databaseRecord;
2214         }
2215         return 0;
2216     }
2217     else if (!strcmp (type, "ext"))
2218     {
2219         if (len) *len = -1;
2220         return (const char *) npr->u.databaseRecord;
2221     }
2222     else if (!strcmp (type, "opac"))
2223              
2224     {
2225         Z_External *r = (Z_External *) npr->u.databaseRecord;
2226         if (r->which == Z_External_OPAC)
2227         {
2228             if (!rec->wrbuf_opac)
2229                 rec->wrbuf_opac = wrbuf_alloc();
2230             wrbuf_rewind(rec->wrbuf_opac);
2231             yaz_display_OPAC(rec->wrbuf_opac, r->u.opac, 0);
2232             return record_iconv_return(rec, len,
2233                                        wrbuf_buf(rec->wrbuf_opac),
2234                                        wrbuf_len(rec->wrbuf_opac),
2235                                        charset);
2236         }
2237     }
2238     return 0;
2239 }
2240
2241 static int strcmp_null(const char *v1, const char *v2)
2242 {
2243     if (!v1 && !v2)
2244         return 0;
2245     if (!v1 || !v2)
2246         return -1;
2247     return strcmp(v1, v2);
2248 }
2249
2250 static size_t record_hash(int pos)
2251 {
2252     if (pos < 0)
2253         pos = 0;
2254     return pos % RECORD_HASH_SIZE;
2255 }
2256
2257 static void record_cache_add(ZOOM_resultset r, Z_NamePlusRecord *npr, 
2258                              int pos,
2259                              const char *syntax, const char *elementSetName,
2260                              const char *schema,
2261                              Z_SRW_diagnostic *diag)
2262 {
2263     ZOOM_record_cache rc = 0;
2264     
2265     ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
2266     ZOOM_connection_put_event(r->connection, event);
2267
2268     for (rc = r->record_hash[record_hash(pos)]; rc; rc = rc->next)
2269     {
2270         if (pos == rc->pos 
2271             && strcmp_null(r->schema, rc->schema) == 0
2272             && strcmp_null(elementSetName,rc->elementSetName) == 0
2273             && strcmp_null(syntax, rc->syntax) == 0)
2274             break;
2275     }
2276     if (!rc)
2277     {
2278         rc = (ZOOM_record_cache) odr_malloc(r->odr, sizeof(*rc));
2279         rc->rec.odr = 0;
2280         rc->rec.wrbuf_marc = 0;
2281         rc->rec.wrbuf_iconv = 0;
2282         rc->rec.wrbuf_opac = 0;
2283         rc->elementSetName = odr_strdup_null(r->odr, elementSetName);
2284         
2285         rc->syntax = odr_strdup_null(r->odr, syntax);
2286         
2287         rc->schema = odr_strdup_null(r->odr, r->schema);
2288
2289         rc->pos = pos;
2290         rc->next = r->record_hash[record_hash(pos)];
2291         r->record_hash[record_hash(pos)] = rc;
2292     }
2293     rc->rec.npr = npr;
2294     rc->rec.schema = odr_strdup_null(r->odr, schema);
2295     rc->rec.diag_set = 0;
2296     rc->rec.diag_uri = 0;
2297     rc->rec.diag_message = 0;
2298     rc->rec.diag_details = 0;
2299     if (diag)
2300     {
2301         if (diag->uri)
2302         {
2303             char *cp;
2304             rc->rec.diag_set = odr_strdup(r->odr, diag->uri);
2305             if ((cp = strrchr(rc->rec.diag_set, '/')))
2306                 *cp = '\0';
2307             rc->rec.diag_uri = odr_strdup(r->odr, diag->uri);
2308         }
2309         rc->rec.diag_message = odr_strdup_null(r->odr, diag->message);            
2310         rc->rec.diag_details = odr_strdup_null(r->odr, diag->details);
2311     }
2312 }
2313
2314 static ZOOM_record record_cache_lookup(ZOOM_resultset r, int pos,
2315                                        const char *syntax,
2316                                        const char *elementSetName)
2317 {
2318     ZOOM_record_cache rc;
2319     
2320     for (rc = r->record_hash[record_hash(pos)]; rc; rc = rc->next)
2321     {
2322         if (pos == rc->pos)
2323         {
2324             if (strcmp_null(r->schema, rc->schema))
2325                 continue;
2326             if (strcmp_null(elementSetName,rc->elementSetName))
2327                 continue;
2328             if (strcmp_null(syntax, rc->syntax))
2329                 continue;
2330             return &rc->rec;
2331         }
2332     }
2333     return 0;
2334 }
2335                                              
2336 static void handle_records(ZOOM_connection c, Z_Records *sr,
2337                            int present_phase)
2338 {
2339     ZOOM_resultset resultset;
2340     int *start, *count;
2341     const char *syntax = 0, *elementSetName = 0;
2342
2343     if (!c->tasks)
2344         return ;
2345     switch (c->tasks->which)
2346     {
2347     case ZOOM_TASK_SEARCH:
2348         resultset = c->tasks->u.search.resultset;
2349         start = &c->tasks->u.search.start;
2350         count = &c->tasks->u.search.count;
2351         syntax = c->tasks->u.search.syntax;
2352         elementSetName = c->tasks->u.search.elementSetName;
2353         break;
2354     case ZOOM_TASK_RETRIEVE:
2355         resultset = c->tasks->u.retrieve.resultset;        
2356         start = &c->tasks->u.retrieve.start;
2357         count = &c->tasks->u.retrieve.count;
2358         syntax = c->tasks->u.retrieve.syntax;
2359         elementSetName = c->tasks->u.retrieve.elementSetName;
2360         break;
2361     default:
2362         return;
2363     }
2364     if (sr && sr->which == Z_Records_NSD)
2365         response_default_diag(c, sr->u.nonSurrogateDiagnostic);
2366     else if (sr && sr->which == Z_Records_multipleNSD)
2367     {
2368         if (sr->u.multipleNonSurDiagnostics->num_diagRecs >= 1)
2369             response_diag(c, sr->u.multipleNonSurDiagnostics->diagRecs[0]);
2370         else
2371             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2372     }
2373     else 
2374     {
2375         if (*count + *start > resultset->size)
2376             *count = resultset->size - *start;
2377         if (*count < 0)
2378             *count = 0;
2379         if (sr && sr->which == Z_Records_DBOSD)
2380         {
2381             int i;
2382             NMEM nmem = odr_extract_mem(c->odr_in);
2383             Z_NamePlusRecordList *p =
2384                 sr->u.databaseOrSurDiagnostics;
2385             for (i = 0; i<p->num_records; i++)
2386             {
2387                 record_cache_add(resultset, p->records[i], i + *start,
2388                                  syntax, elementSetName,
2389                                  elementSetName, 0);
2390             }
2391             *count -= i;
2392             if (*count < 0)
2393                 *count = 0;
2394             *start += i;
2395             yaz_log(log_details, 
2396                     "handle_records resultset=%p start=%d count=%d",
2397                     resultset, *start, *count);
2398
2399             /* transfer our response to search_nmem .. we need it later */
2400             nmem_transfer(odr_getmem(resultset->odr), nmem);
2401             nmem_destroy(nmem);
2402             if (present_phase && p->num_records == 0)
2403             {
2404                 /* present response and we didn't get any records! */
2405                 Z_NamePlusRecord *myrec = 
2406                     zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2407                 record_cache_add(resultset, myrec, *start,
2408                                  syntax, elementSetName, 0, 0);
2409             }
2410         }
2411         else if (present_phase)
2412         {
2413             /* present response and we didn't get any records! */
2414             Z_NamePlusRecord *myrec = 
2415                 zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2416             record_cache_add(resultset, myrec, *start, syntax, elementSetName,
2417                              0, 0);
2418         }
2419     }
2420 }
2421
2422 static void handle_present_response(ZOOM_connection c, Z_PresentResponse *pr)
2423 {
2424     handle_records(c, pr->records, 1);
2425 }
2426
2427 static void handle_queryExpressionTerm(ZOOM_options opt, const char *name,
2428                                        Z_Term *term)
2429 {
2430     switch (term->which)
2431     {
2432     case Z_Term_general:
2433         ZOOM_options_setl(opt, name,
2434                           (const char *)(term->u.general->buf), 
2435                           term->u.general->len);
2436         break;
2437     case Z_Term_characterString:
2438         ZOOM_options_set(opt, name, term->u.characterString);
2439         break;
2440     case Z_Term_numeric:
2441         ZOOM_options_set_int(opt, name, *term->u.numeric);
2442         break;
2443     }
2444 }
2445
2446 static void handle_queryExpression(ZOOM_options opt, const char *name,
2447                                    Z_QueryExpression *exp)
2448 {
2449     char opt_name[80];
2450     
2451     switch (exp->which)
2452     {
2453     case Z_QueryExpression_term:
2454         if (exp->u.term && exp->u.term->queryTerm)
2455         {
2456             sprintf(opt_name, "%s.term", name);
2457             handle_queryExpressionTerm(opt, opt_name, exp->u.term->queryTerm);
2458         }
2459         break;
2460     case Z_QueryExpression_query:
2461         break;
2462     }
2463 }
2464
2465 static void handle_searchResult(ZOOM_connection c, ZOOM_resultset resultset,
2466                                 Z_OtherInformation *o)
2467 {
2468     int i;
2469     for (i = 0; o && i < o->num_elements; i++)
2470     {
2471         if (o->list[i]->which == Z_OtherInfo_externallyDefinedInfo)
2472         {
2473             Z_External *ext = o->list[i]->information.externallyDefinedInfo;
2474             
2475             if (ext->which == Z_External_searchResult1)
2476             {
2477                 int j;
2478                 Z_SearchInfoReport *sr = ext->u.searchResult1;
2479                 
2480                 if (sr->num)
2481                     ZOOM_options_set_int(
2482                         resultset->options, "searchresult.size", sr->num);
2483
2484                 for (j = 0; j < sr->num; j++)
2485                 {
2486                     Z_SearchInfoReport_s *ent =
2487                         ext->u.searchResult1->elements[j];
2488                     char pref[80];
2489                     
2490                     sprintf(pref, "searchresult.%d", j);
2491
2492                     if (ent->subqueryId)
2493                     {
2494                         char opt_name[80];
2495                         sprintf(opt_name, "%s.id", pref);
2496                         ZOOM_options_set(resultset->options, opt_name,
2497                                          ent->subqueryId);
2498                     }
2499                     if (ent->subqueryExpression)
2500                     {
2501                         char opt_name[80];
2502                         sprintf(opt_name, "%s.subquery", pref);
2503                         handle_queryExpression(resultset->options, opt_name,
2504                                                ent->subqueryExpression);
2505                     }
2506                     if (ent->subqueryInterpretation)
2507                     {
2508                         char opt_name[80];
2509                         sprintf(opt_name, "%s.interpretation", pref);
2510                         handle_queryExpression(resultset->options, opt_name,
2511                                                ent->subqueryInterpretation);
2512                     }
2513                     if (ent->subqueryRecommendation)
2514                     {
2515                         char opt_name[80];
2516                         sprintf(opt_name, "%s.recommendation", pref);
2517                         handle_queryExpression(resultset->options, opt_name,
2518                                                ent->subqueryRecommendation);
2519                     }
2520                     if (ent->subqueryCount)
2521                     {
2522                         char opt_name[80];
2523                         sprintf(opt_name, "%s.count", pref);
2524                         ZOOM_options_set_int(resultset->options, opt_name,
2525                                              *ent->subqueryCount);
2526                     }                                             
2527                 }
2528             }
2529         }
2530     }
2531 }
2532
2533 static void handle_search_response(ZOOM_connection c, Z_SearchResponse *sr)
2534 {
2535     ZOOM_resultset resultset;
2536     ZOOM_Event event;
2537
2538     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
2539         return ;
2540
2541     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
2542     ZOOM_connection_put_event(c, event);
2543
2544     resultset = c->tasks->u.search.resultset;
2545
2546     if (sr->resultSetStatus)
2547     {
2548         ZOOM_options_set_int(resultset->options, "resultSetStatus",
2549                              *sr->resultSetStatus);
2550     }
2551     if (sr->presentStatus)
2552     {
2553         ZOOM_options_set_int(resultset->options, "presentStatus",
2554                              *sr->presentStatus);
2555     }
2556     handle_searchResult(c, resultset, sr->additionalSearchInfo);
2557
2558     resultset->size = *sr->resultCount;
2559     handle_records(c, sr->records, 0);
2560 }
2561
2562 static void sort_response(ZOOM_connection c, Z_SortResponse *res)
2563 {
2564     if (res->diagnostics && res->num_diagnostics > 0)
2565         response_diag(c, res->diagnostics[0]);
2566 }
2567
2568 static int scan_response(ZOOM_connection c, Z_ScanResponse *res)
2569 {
2570     NMEM nmem = odr_extract_mem(c->odr_in);
2571     ZOOM_scanset scan;
2572
2573     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
2574         return 0;
2575     scan = c->tasks->u.scan.scan;
2576
2577     if (res->entries && res->entries->nonsurrogateDiagnostics)
2578         response_diag(c, res->entries->nonsurrogateDiagnostics[0]);
2579     scan->scan_response = res;
2580     scan->srw_scan_response = 0;
2581     nmem_transfer(odr_getmem(scan->odr), nmem);
2582     if (res->stepSize)
2583         ZOOM_options_set_int(scan->options, "stepSize", *res->stepSize);
2584     if (res->positionOfTerm)
2585         ZOOM_options_set_int(scan->options, "position", *res->positionOfTerm);
2586     if (res->scanStatus)
2587         ZOOM_options_set_int(scan->options, "scanStatus", *res->scanStatus);
2588     if (res->numberOfEntriesReturned)
2589         ZOOM_options_set_int(scan->options, "number",
2590                              *res->numberOfEntriesReturned);
2591     nmem_destroy(nmem);
2592     return 1;
2593 }
2594
2595 static zoom_ret send_sort(ZOOM_connection c,
2596                           ZOOM_resultset resultset)
2597 {
2598     if (c->error)
2599         resultset->r_sort_spec = 0;
2600     if (resultset->r_sort_spec)
2601     {
2602         Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_sortRequest);
2603         Z_SortRequest *req = apdu->u.sortRequest;
2604         
2605         req->num_inputResultSetNames = 1;
2606         req->inputResultSetNames = (Z_InternationalString **)
2607             odr_malloc(c->odr_out, sizeof(*req->inputResultSetNames));
2608         req->inputResultSetNames[0] =
2609             odr_strdup(c->odr_out, resultset->setname);
2610         req->sortedResultSetName = odr_strdup(c->odr_out, resultset->setname);
2611         req->sortSequence = resultset->r_sort_spec;
2612         resultset->r_sort_spec = 0;
2613         return send_APDU(c, apdu);
2614     }
2615     return zoom_complete;
2616 }
2617
2618 static zoom_ret send_present(ZOOM_connection c)
2619 {
2620     Z_APDU *apdu = 0;
2621     Z_PresentRequest *req = 0;
2622     int i = 0;
2623     const char *syntax = 0;
2624     const char *elementSetName = 0;
2625     ZOOM_resultset  resultset;
2626     int *start, *count;
2627
2628     if (!c->tasks)
2629     {
2630         yaz_log(log_details, "%p send_present no tasks", c);
2631         return zoom_complete;
2632     }
2633     
2634     switch (c->tasks->which)
2635     {
2636     case ZOOM_TASK_SEARCH:
2637         resultset = c->tasks->u.search.resultset;
2638         start = &c->tasks->u.search.start;
2639         count = &c->tasks->u.search.count;
2640         syntax = c->tasks->u.search.syntax;
2641         elementSetName = c->tasks->u.search.elementSetName;
2642         break;
2643     case ZOOM_TASK_RETRIEVE:
2644         resultset = c->tasks->u.retrieve.resultset;
2645         start = &c->tasks->u.retrieve.start;
2646         count = &c->tasks->u.retrieve.count;
2647         syntax = c->tasks->u.retrieve.syntax;
2648         elementSetName = c->tasks->u.retrieve.elementSetName;
2649         break;
2650     default:
2651         return zoom_complete;
2652     }
2653     yaz_log(log_details, "%p send_present start=%d count=%d",
2654             c, *start, *count);
2655
2656     if (*start < 0 || *count < 0 || *start + *count > resultset->size)
2657     {
2658         set_dset_error(c, YAZ_BIB1_PRESENT_REQUEST_OUT_OF_RANGE, "Bib-1",
2659                        "", 0);
2660     }
2661     if (c->error)                  /* don't continue on error */
2662         return zoom_complete;
2663     yaz_log(log_details, "send_present resultset=%p start=%d count=%d",
2664             resultset, *start, *count);
2665
2666     for (i = 0; i < *count; i++)
2667     {
2668         ZOOM_record rec =
2669             record_cache_lookup(resultset, i + *start, syntax, elementSetName);
2670         if (!rec)
2671             break;
2672         else
2673         {
2674             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
2675             ZOOM_connection_put_event(c, event);
2676         }
2677     }
2678     *start += i;
2679     *count -= i;
2680
2681     if (*count == 0)
2682     {
2683         yaz_log(log_details, "%p send_present skip=%d no more to fetch", c, i);
2684         return zoom_complete;
2685     }
2686
2687     apdu = zget_APDU(c->odr_out, Z_APDU_presentRequest);
2688     req = apdu->u.presentRequest;
2689
2690     if (i)
2691         yaz_log(log_details, "%p send_present skip=%d", c, i);
2692
2693     *req->resultSetStartPoint = *start + 1;
2694
2695     if (resultset->step > 0 && resultset->step < *count)
2696         *req->numberOfRecordsRequested = resultset->step;
2697     else
2698         *req->numberOfRecordsRequested = *count;
2699     
2700     if (*req->numberOfRecordsRequested + *start > resultset->size)
2701         *req->numberOfRecordsRequested = resultset->size - *start;
2702     assert(*req->numberOfRecordsRequested > 0);
2703
2704     if (syntax && *syntax)
2705         req->preferredRecordSyntax =
2706             zoom_yaz_str_to_z3950oid(c, CLASS_RECSYN, syntax);
2707
2708     if (resultset->schema && *resultset->schema)
2709     {
2710         Z_RecordComposition *compo = (Z_RecordComposition *)
2711             odr_malloc(c->odr_out, sizeof(*compo));
2712
2713         req->recordComposition = compo;
2714         compo->which = Z_RecordComp_complex;
2715         compo->u.complex = (Z_CompSpec *)
2716             odr_malloc(c->odr_out, sizeof(*compo->u.complex));
2717         compo->u.complex->selectAlternativeSyntax = (bool_t *) 
2718             odr_malloc(c->odr_out, sizeof(bool_t));
2719         *compo->u.complex->selectAlternativeSyntax = 0;
2720
2721         compo->u.complex->generic = (Z_Specification *)
2722             odr_malloc(c->odr_out, sizeof(*compo->u.complex->generic));
2723
2724         compo->u.complex->generic->which = Z_Schema_oid;
2725         compo->u.complex->generic->schema.oid = (Odr_oid *)
2726             zoom_yaz_str_to_z3950oid (c, CLASS_SCHEMA, resultset->schema);
2727
2728         if (!compo->u.complex->generic->schema.oid)
2729         {
2730             /* OID wasn't a schema! Try record syntax instead. */
2731
2732             compo->u.complex->generic->schema.oid = (Odr_oid *)
2733                 zoom_yaz_str_to_z3950oid (c, CLASS_RECSYN, resultset->schema);
2734         }
2735         if (elementSetName && *elementSetName)
2736         {
2737             compo->u.complex->generic->elementSpec = (Z_ElementSpec *)
2738                 odr_malloc(c->odr_out, sizeof(Z_ElementSpec));
2739             compo->u.complex->generic->elementSpec->which =
2740                 Z_ElementSpec_elementSetName;
2741             compo->u.complex->generic->elementSpec->u.elementSetName =
2742                 odr_strdup(c->odr_out, elementSetName);
2743         }
2744         else
2745             compo->u.complex->generic->elementSpec = 0;
2746         compo->u.complex->num_dbSpecific = 0;
2747         compo->u.complex->dbSpecific = 0;
2748         compo->u.complex->num_recordSyntax = 0;
2749         compo->u.complex->recordSyntax = 0;
2750     }
2751     else if (elementSetName && *elementSetName)
2752     {
2753         Z_ElementSetNames *esn = (Z_ElementSetNames *)
2754             odr_malloc(c->odr_out, sizeof(*esn));
2755         Z_RecordComposition *compo = (Z_RecordComposition *)
2756             odr_malloc(c->odr_out, sizeof(*compo));
2757         
2758         esn->which = Z_ElementSetNames_generic;
2759         esn->u.generic = odr_strdup(c->odr_out, elementSetName);
2760         compo->which = Z_RecordComp_simple;
2761         compo->u.simple = esn;
2762         req->recordComposition = compo;
2763     }
2764     req->resultSetId = odr_strdup(c->odr_out, resultset->setname);
2765     return send_APDU(c, apdu);
2766 }
2767
2768 ZOOM_API(ZOOM_scanset)
2769     ZOOM_connection_scan(ZOOM_connection c, const char *start)
2770 {
2771     ZOOM_scanset s;
2772     ZOOM_query q = ZOOM_query_create();
2773
2774     ZOOM_query_prefix(q, start);
2775
2776     s = ZOOM_connection_scan1(c, q);
2777     ZOOM_query_destroy(q);
2778     return s;
2779
2780 }
2781
2782 ZOOM_API(ZOOM_scanset)
2783     ZOOM_connection_scan1(ZOOM_connection c, ZOOM_query q)
2784 {
2785     ZOOM_scanset scan = 0;
2786
2787     if (!q->z_query)
2788         return 0;
2789     scan = (ZOOM_scanset) xmalloc(sizeof(*scan));
2790     scan->connection = c;
2791     scan->odr = odr_createmem(ODR_DECODE);
2792     scan->options = ZOOM_options_create_with_parent(c->options);
2793     scan->refcount = 1;
2794     scan->scan_response = 0;
2795     scan->srw_scan_response = 0;
2796
2797     scan->query = q;
2798     (q->refcount)++;
2799     scan->databaseNames = set_DatabaseNames(c, c->options,
2800                                             &scan->num_databaseNames,
2801                                             scan->odr);
2802
2803     if (1)
2804     {
2805         ZOOM_task task = ZOOM_connection_add_task(c, ZOOM_TASK_SCAN);
2806         task->u.scan.scan = scan;
2807         
2808         (scan->refcount)++;
2809         if (!c->async)
2810         {
2811             while (ZOOM_event(1, &c))
2812                 ;
2813         }
2814     }
2815     return scan;
2816 }
2817
2818 ZOOM_API(void)
2819     ZOOM_scanset_destroy(ZOOM_scanset scan)
2820 {
2821     if (!scan)
2822         return;
2823     (scan->refcount)--;
2824     if (scan->refcount == 0)
2825     {
2826         ZOOM_query_destroy(scan->query);
2827
2828         odr_destroy(scan->odr);
2829         
2830         ZOOM_options_destroy(scan->options);
2831         xfree(scan);
2832     }
2833 }
2834
2835 static zoom_ret send_package(ZOOM_connection c)
2836 {
2837     ZOOM_Event event;
2838
2839     yaz_log(log_details, "%p send_package", c);
2840     if (!c->tasks)
2841         return zoom_complete;
2842     assert (c->tasks->which == ZOOM_TASK_PACKAGE);
2843     
2844     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
2845     ZOOM_connection_put_event(c, event);
2846     
2847     c->buf_out = c->tasks->u.package->buf_out;
2848     c->len_out = c->tasks->u.package->len_out;
2849
2850     return do_write(c);
2851 }
2852
2853 static zoom_ret ZOOM_connection_send_scan(ZOOM_connection c)
2854 {
2855     ZOOM_scanset scan;
2856     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_scanRequest);
2857     Z_ScanRequest *req = apdu->u.scanRequest;
2858
2859     yaz_log(log_details, "%p send_scan", c);
2860     if (!c->tasks)
2861         return zoom_complete;
2862     assert (c->tasks->which == ZOOM_TASK_SCAN);
2863     scan = c->tasks->u.scan.scan;
2864
2865     /* Z39.50 scan can only carry RPN */
2866     if (scan->query->z_query->which == Z_Query_type_1 ||
2867         scan->query->z_query->which == Z_Query_type_101)
2868     {
2869         Z_RPNQuery *rpn = scan->query->z_query->u.type_1;
2870         const char *cp = ZOOM_options_get(scan->options, "rpnCharset");
2871         if (cp)
2872         {
2873             yaz_iconv_t cd = yaz_iconv_open(cp, "UTF-8");
2874             if (cd)
2875             {
2876                 rpn = yaz_copy_z_RPNQuery(rpn, c->odr_out);
2877
2878                 yaz_query_charset_convert_rpnquery(
2879                     rpn, c->odr_out, cd);
2880                 yaz_iconv_close(cd);
2881             }
2882         }
2883         req->attributeSet = rpn->attributeSetId;
2884         if (!req->attributeSet)
2885             req->attributeSet = odr_oiddup(c->odr_out, yaz_oid_attset_bib_1);
2886         if (rpn->RPNStructure->which == Z_RPNStructure_simple &&
2887             rpn->RPNStructure->u.simple->which == Z_Operand_APT)
2888         {
2889             req->termListAndStartPoint =
2890                 rpn->RPNStructure->u.simple->u.attributesPlusTerm;
2891         }
2892         else
2893         {
2894             set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
2895             return zoom_complete;
2896         }
2897     }
2898     else
2899     {
2900         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
2901         return zoom_complete;
2902     }
2903
2904     *req->numberOfTermsRequested =
2905         ZOOM_options_get_int(scan->options, "number", 10);
2906
2907     req->preferredPositionInResponse =
2908         odr_intdup(c->odr_out,
2909                    ZOOM_options_get_int(scan->options, "position", 1));
2910
2911     req->stepSize =
2912         odr_intdup(c->odr_out,
2913                    ZOOM_options_get_int(scan->options, "stepSize", 0));
2914     
2915     req->databaseNames = scan->databaseNames;
2916     req->num_databaseNames = scan->num_databaseNames;
2917
2918     return send_APDU(c, apdu);
2919 }
2920
2921 #if YAZ_HAVE_XML2
2922 static zoom_ret ZOOM_connection_srw_send_scan(ZOOM_connection c)
2923 {
2924     ZOOM_scanset scan;
2925     Z_SRW_PDU *sr = 0;
2926     const char *option_val = 0;
2927
2928     if (!c->tasks)
2929         return zoom_complete;
2930     assert (c->tasks->which == ZOOM_TASK_SCAN);
2931     scan = c->tasks->u.scan.scan;
2932         
2933     sr = ZOOM_srw_get_pdu(c, Z_SRW_scan_request);
2934
2935     /* SRU scan can only carry CQL and PQF */
2936     if (scan->query->z_query->which == Z_Query_type_104)
2937     {
2938         sr->u.scan_request->query_type = Z_SRW_query_type_cql;
2939         sr->u.scan_request->scanClause.cql = scan->query->query_string;
2940     }
2941     else if (scan->query->z_query->which == Z_Query_type_1
2942              || scan->query->z_query->which == Z_Query_type_101)
2943     {
2944         sr->u.scan_request->query_type = Z_SRW_query_type_pqf;
2945         sr->u.scan_request->scanClause.pqf = scan->query->query_string;
2946     }
2947     else
2948     {
2949         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
2950         return zoom_complete;
2951     }
2952
2953     sr->u.scan_request->maximumTerms = odr_intdup(
2954         c->odr_out, ZOOM_options_get_int(scan->options, "number", 10));
2955     
2956     sr->u.scan_request->responsePosition = odr_intdup(
2957         c->odr_out, ZOOM_options_get_int(scan->options, "position", 1));
2958     
2959     option_val = ZOOM_options_get(scan->options, "extraArgs");
2960     yaz_encode_sru_extra(sr, c->odr_out, option_val);
2961     return send_srw(c, sr);
2962 }
2963 #else
2964 static zoom_ret ZOOM_connection_srw_send_scan(ZOOM_connection c)
2965 {
2966     return zoom_complete;
2967 }
2968 #endif
2969
2970
2971 ZOOM_API(size_t)
2972     ZOOM_scanset_size(ZOOM_scanset scan)
2973 {
2974     if (!scan)
2975         return 0;
2976
2977     if (scan->scan_response && scan->scan_response->entries)
2978         return scan->scan_response->entries->num_entries;
2979     else if (scan->srw_scan_response)
2980         return scan->srw_scan_response->num_terms;
2981     return 0;
2982 }
2983
2984 static void ZOOM_scanset_term_x(ZOOM_scanset scan, size_t pos,
2985                                 int *occ,
2986                                 const char **value_term, size_t *value_len,
2987                                 const char **disp_term, size_t *disp_len)
2988 {
2989     size_t noent = ZOOM_scanset_size(scan);
2990     
2991     *value_term = 0;
2992     *value_len = 0;
2993
2994     *disp_term = 0;
2995     *disp_len = 0;
2996
2997     *occ = 0;
2998     if (pos >= noent || pos < 0)
2999         return;
3000     if (scan->scan_response)
3001     {
3002         Z_ScanResponse *res = scan->scan_response;
3003         if (res->entries->entries[pos]->which == Z_Entry_termInfo)
3004         {
3005             Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
3006             
3007             *value_term = (const char *) t->term->u.general->buf;
3008             *value_len = t->term->u.general->len;
3009             if (t->displayTerm)
3010             {
3011                 *disp_term = t->displayTerm;
3012                 *disp_len = strlen(*disp_term);
3013             }
3014             else if (t->term->which == Z_Term_general)
3015             {
3016                 *disp_term = (const char *) t->term->u.general->buf;
3017                 *disp_len = t->term->u.general->len;
3018             }
3019             *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
3020         }
3021     }
3022     if (scan->srw_scan_response)
3023     {
3024         Z_SRW_scanResponse *res = scan->srw_scan_response;
3025         Z_SRW_scanTerm *t = res->terms + pos;
3026         if (t)
3027         {
3028             *value_term = t->value;
3029             *value_len = strlen(*value_term);
3030
3031             if (t->displayTerm)
3032                 *disp_term = t->displayTerm;
3033             else
3034                 *disp_term = t->value;
3035             *disp_len = strlen(*disp_term);
3036             *occ = t->numberOfRecords ? *t->numberOfRecords : 0;
3037         }
3038     }
3039 }
3040
3041 ZOOM_API(const char *)
3042     ZOOM_scanset_term(ZOOM_scanset scan, size_t pos,
3043                       int *occ, int *len)
3044 {
3045     const char *value_term = 0;
3046     size_t value_len = 0;
3047     const char *disp_term = 0;
3048     size_t disp_len = 0;
3049
3050     ZOOM_scanset_term_x(scan, pos, occ, &value_term, &value_len,
3051                         &disp_term, &disp_len);
3052     
3053     *len = value_len;
3054     return value_term;
3055 }
3056
3057 ZOOM_API(const char *)
3058     ZOOM_scanset_display_term(ZOOM_scanset scan, size_t pos,
3059                               int *occ, int *len)
3060 {
3061     const char *value_term = 0;
3062     size_t value_len = 0;
3063     const char *disp_term = 0;
3064     size_t disp_len = 0;
3065
3066     ZOOM_scanset_term_x(scan, pos, occ, &value_term, &value_len,
3067                         &disp_term, &disp_len);
3068     
3069     *len = disp_len;
3070     return disp_term;
3071 }
3072
3073 ZOOM_API(const char *)
3074     ZOOM_scanset_option_get(ZOOM_scanset scan, const char *key)
3075 {
3076     return ZOOM_options_get(scan->options, key);
3077 }
3078
3079 ZOOM_API(void)
3080     ZOOM_scanset_option_set(ZOOM_scanset scan, const char *key,
3081                             const char *val)
3082 {
3083     ZOOM_options_set(scan->options, key, val);
3084 }
3085
3086 static Z_APDU *create_es_package(ZOOM_package p, const Odr_oid *oid)
3087 {
3088     const char *str;
3089     Z_APDU *apdu = zget_APDU(p->odr_out, Z_APDU_extendedServicesRequest);
3090     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
3091     
3092     str = ZOOM_options_get(p->options, "package-name");
3093     if (str && *str)
3094         req->packageName = odr_strdup(p->odr_out, str);
3095     
3096     str = ZOOM_options_get(p->options, "user-id");
3097     if (str)
3098         req->userId = odr_strdup_null(p->odr_out, str);
3099     
3100     req->packageType = odr_oiddup(p->odr_out, oid);
3101
3102     str = ZOOM_options_get(p->options, "function");
3103     if (str)
3104     {
3105         if (!strcmp (str, "create"))
3106             *req->function = Z_ExtendedServicesRequest_create;
3107         if (!strcmp (str, "delete"))
3108             *req->function = Z_ExtendedServicesRequest_delete;
3109         if (!strcmp (str, "modify"))
3110             *req->function = Z_ExtendedServicesRequest_modify;
3111     }
3112
3113     str = ZOOM_options_get(p->options, "waitAction");
3114     if (str)
3115     {
3116         if (!strcmp (str, "wait"))
3117             *req->waitAction = Z_ExtendedServicesRequest_wait;
3118         if (!strcmp (str, "waitIfPossible"))
3119             *req->waitAction = Z_ExtendedServicesRequest_waitIfPossible;
3120         if (!strcmp (str, "dontWait"))
3121             *req->waitAction = Z_ExtendedServicesRequest_dontWait;
3122         if (!strcmp (str, "dontReturnPackage"))
3123             *req->waitAction = Z_ExtendedServicesRequest_dontReturnPackage;
3124     }
3125     return apdu;
3126 }
3127
3128 static const char *ill_array_lookup(void *clientData, const char *idx)
3129 {
3130     ZOOM_package p = (ZOOM_package) clientData;
3131     return ZOOM_options_get(p->options, idx+4);
3132 }
3133
3134 static Z_External *encode_ill_request(ZOOM_package p)
3135 {
3136     ODR out = p->odr_out;
3137     ILL_Request *req;
3138     Z_External *r = 0;
3139     struct ill_get_ctl ctl;
3140         
3141     ctl.odr = p->odr_out;
3142     ctl.clientData = p;
3143     ctl.f = ill_array_lookup;
3144         
3145     req = ill_get_ILLRequest(&ctl, "ill", 0);
3146         
3147     if (!ill_Request(out, &req, 0, 0))
3148     {
3149         int ill_request_size;
3150         char *ill_request_buf = odr_getbuf(out, &ill_request_size, 0);
3151         if (ill_request_buf)
3152             odr_setbuf(out, ill_request_buf, ill_request_size, 1);
3153         return 0;
3154     }
3155     else
3156     {
3157         int illRequest_size = 0;
3158         char *illRequest_buf = odr_getbuf(out, &illRequest_size, 0);
3159                 
3160         r = (Z_External *) odr_malloc(out, sizeof(*r));
3161         r->direct_reference = odr_oiddup(out, yaz_oid_general_isoill_1);
3162         r->indirect_reference = 0;
3163         r->descriptor = 0;
3164         r->which = Z_External_single;
3165                 
3166         r->u.single_ASN1_type =
3167             odr_create_Odr_oct(out,
3168                                (unsigned char *)illRequest_buf,
3169                                illRequest_size);
3170     }
3171     return r;
3172 }
3173
3174 static Z_ItemOrder *encode_item_order(ZOOM_package p)
3175 {
3176     Z_ItemOrder *req = (Z_ItemOrder *) odr_malloc(p->odr_out, sizeof(*req));
3177     const char *str;
3178     int len;
3179     
3180     req->which = Z_IOItemOrder_esRequest;
3181     req->u.esRequest = (Z_IORequest *) 
3182         odr_malloc(p->odr_out,sizeof(Z_IORequest));
3183
3184     /* to keep part ... */
3185     req->u.esRequest->toKeep = (Z_IOOriginPartToKeep *)
3186         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartToKeep));
3187     req->u.esRequest->toKeep->supplDescription = 0;
3188     req->u.esRequest->toKeep->contact = (Z_IOContact *)
3189         odr_malloc(p->odr_out, sizeof(*req->u.esRequest->toKeep->contact));
3190         
3191     str = ZOOM_options_get(p->options, "contact-name");
3192     req->u.esRequest->toKeep->contact->name =
3193         odr_strdup_null(p->odr_out, str);
3194         
3195     str = ZOOM_options_get(p->options, "contact-phone");
3196     req->u.esRequest->toKeep->contact->phone =
3197         odr_strdup_null(p->odr_out, str);
3198         
3199     str = ZOOM_options_get(p->options, "contact-email");
3200     req->u.esRequest->toKeep->contact->email =
3201         odr_strdup_null(p->odr_out, str);
3202         
3203     req->u.esRequest->toKeep->addlBilling = 0;
3204         
3205     /* not to keep part ... */
3206     req->u.esRequest->notToKeep = (Z_IOOriginPartNotToKeep *)
3207         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartNotToKeep));
3208         
3209     str = ZOOM_options_get(p->options, "itemorder-setname");
3210     if (!str)
3211         str = "default";
3212
3213     if (!*str) 
3214         req->u.esRequest->notToKeep->resultSetItem = 0;
3215     else
3216     {
3217         req->u.esRequest->notToKeep->resultSetItem = (Z_IOResultSetItem *)
3218             odr_malloc(p->odr_out, sizeof(Z_IOResultSetItem));
3219
3220         req->u.esRequest->notToKeep->resultSetItem->resultSetId =
3221             odr_strdup(p->odr_out, str);
3222         req->u.esRequest->notToKeep->resultSetItem->item =
3223             (int *) odr_malloc(p->odr_out, sizeof(int));
3224         
3225         str = ZOOM_options_get(p->options, "itemorder-item");
3226         *req->u.esRequest->notToKeep->resultSetItem->item =
3227             (str ? atoi(str) : 1);
3228     }
3229
3230     str = ZOOM_options_getl(p->options, "doc", &len);
3231     if (str)
3232     {
3233         req->u.esRequest->notToKeep->itemRequest =
3234             z_ext_record_xml(p->odr_out, str, len);
3235     }
3236     else
3237         req->u.esRequest->notToKeep->itemRequest = encode_ill_request(p);
3238     
3239     return req;
3240 }
3241
3242 Z_APDU *create_admin_package(ZOOM_package p, int type, 
3243                              Z_ESAdminOriginPartToKeep **toKeepP,
3244                              Z_ESAdminOriginPartNotToKeep **notToKeepP)
3245 {
3246     Z_APDU *apdu = create_es_package(p, yaz_oid_extserv_admin);
3247     if (apdu)
3248     {
3249         Z_ESAdminOriginPartToKeep  *toKeep;
3250         Z_ESAdminOriginPartNotToKeep  *notToKeep;
3251         Z_External *r = (Z_External *) odr_malloc(p->odr_out, sizeof(*r));
3252         const char *first_db = "Default";
3253         int num_db;
3254         char **db = set_DatabaseNames(p->connection, p->options, &num_db,
3255                                       p->odr_out);
3256         if (num_db > 0)
3257             first_db = db[0];
3258             
3259         r->direct_reference = odr_oiddup(p->odr_out, yaz_oid_extserv_admin);
3260         r->descriptor = 0;
3261         r->indirect_reference = 0;
3262         r->which = Z_External_ESAdmin;
3263         
3264         r->u.adminService = (Z_Admin *)
3265             odr_malloc(p->odr_out, sizeof(*r->u.adminService));
3266         r->u.adminService->which = Z_Admin_esRequest;
3267         r->u.adminService->u.esRequest = (Z_AdminEsRequest *)
3268             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest));
3269         
3270         toKeep = r->u.adminService->u.esRequest->toKeep =
3271             (Z_ESAdminOriginPartToKeep *) 
3272             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest->toKeep));
3273         toKeep->which = type;
3274         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
3275         toKeep->u.create = odr_nullval();
3276         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3277         
3278         r->u.adminService->u.esRequest->notToKeep = notToKeep =
3279             (Z_ESAdminOriginPartNotToKeep *)
3280             odr_malloc(p->odr_out,
3281                        sizeof(*r->u.adminService->u.esRequest->notToKeep));
3282         notToKeep->which = Z_ESAdminOriginPartNotToKeep_recordsWillFollow;
3283         notToKeep->u.recordsWillFollow = odr_nullval();
3284         if (toKeepP)
3285             *toKeepP = toKeep;
3286         if (notToKeepP)
3287             *notToKeepP = notToKeep;
3288     }
3289     return apdu;
3290 }
3291
3292 static Z_APDU *create_xmlupdate_package(ZOOM_package p)
3293 {
3294     Z_APDU *apdu = create_es_package(p, yaz_oid_extserv_xml_es);
3295     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
3296     Z_External *ext = (Z_External *) odr_malloc(p->odr_out, sizeof(*ext));
3297     int len;
3298     const char *doc = ZOOM_options_getl(p->options, "doc", &len);
3299
3300     if (!doc)
3301     {
3302         doc = "";
3303         len = 0;
3304     }
3305
3306     req->taskSpecificParameters = ext;
3307     ext->direct_reference = req->packageType;
3308     ext->descriptor = 0;
3309     ext->indirect_reference = 0;
3310     
3311     ext->which = Z_External_octet;
3312     ext->u.single_ASN1_type =
3313         odr_create_Odr_oct(p->odr_out, (const unsigned char *) doc, len);
3314     return apdu;
3315 }
3316
3317 static Z_APDU *create_update_package(ZOOM_package p)
3318 {
3319     Z_APDU *apdu = 0;
3320     const char *first_db = "Default";
3321     int num_db;
3322     char **db = set_DatabaseNames(p->connection, p->options, &num_db, p->odr_out);
3323     const char *action = ZOOM_options_get(p->options, "action");
3324     int recordIdOpaque_len;
3325     const char *recordIdOpaque = ZOOM_options_getl(p->options, "recordIdOpaque",
3326         &recordIdOpaque_len);
3327     const char *recordIdNumber = ZOOM_options_get(p->options, "recordIdNumber");
3328     int record_len;
3329     const char *record_buf = ZOOM_options_getl(p->options, "record",
3330         &record_len);
3331     int recordOpaque_len;
3332     const char *recordOpaque_buf = ZOOM_options_getl(p->options, "recordOpaque",
3333         &recordOpaque_len);
3334     const char *syntax_str = ZOOM_options_get(p->options, "syntax");
3335     const char *version = ZOOM_options_get(p->options, "updateVersion");
3336
3337     const char *correlationInfo_note =
3338         ZOOM_options_get(p->options, "correlationInfo.note");
3339     const char *correlationInfo_id =
3340         ZOOM_options_get(p->options, "correlationInfo.id");
3341     int action_no = -1;
3342     Odr_oid *syntax_oid = 0;
3343     const Odr_oid *package_oid = yaz_oid_extserv_database_update;
3344
3345     if (!version)
3346         version = "3";
3347     if (!syntax_str)
3348         syntax_str = "xml";
3349     if (!record_buf && !recordOpaque_buf)
3350     {
3351         record_buf = "void";
3352         record_len = 4;
3353         syntax_str = "SUTRS";
3354     }
3355
3356     if (syntax_str)
3357     {
3358         syntax_oid = yaz_string_to_oid_odr(yaz_oid_std(),
3359                                            CLASS_RECSYN, syntax_str,
3360                                            p->odr_out);
3361     }
3362     if (!syntax_oid)
3363         return 0;
3364
3365     if (num_db > 0)
3366         first_db = db[0];
3367     
3368     switch(*version)
3369     {
3370     case '1':
3371         package_oid = yaz_oid_extserv_database_update_first_version;
3372         /* old update does not support specialUpdate */
3373         if (!action)
3374             action = "recordInsert";
3375         break;
3376     case '2':
3377         if (!action)
3378             action = "specialUpdate";
3379         package_oid = yaz_oid_extserv_database_update_second_version;
3380         break;
3381     case '3':
3382         if (!action)
3383             action = "specialUpdate";
3384         package_oid = yaz_oid_extserv_database_update;
3385         break;
3386     default:
3387         return 0;
3388     }
3389     
3390     if (!strcmp(action, "recordInsert"))
3391         action_no = Z_IUOriginPartToKeep_recordInsert;
3392     else if (!strcmp(action, "recordReplace"))
3393         action_no = Z_IUOriginPartToKeep_recordReplace;
3394     else if (!strcmp(action, "recordDelete"))
3395         action_no = Z_IUOriginPartToKeep_recordDelete;
3396     else if (!strcmp(action, "elementUpdate"))
3397         action_no = Z_IUOriginPartToKeep_elementUpdate;
3398     else if (!strcmp(action, "specialUpdate"))
3399         action_no = Z_IUOriginPartToKeep_specialUpdate;
3400     else
3401         return 0;
3402
3403     apdu = create_es_package(p, package_oid);
3404     if (apdu)
3405     {
3406         Z_IUOriginPartToKeep *toKeep;
3407         Z_IUSuppliedRecords *notToKeep;
3408         Z_External *r = (Z_External *)
3409             odr_malloc(p->odr_out, sizeof(*r));
3410         const char *elementSetName =
3411             ZOOM_options_get(p->options, "elementSetName");
3412         
3413         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3414         
3415         r->direct_reference = odr_oiddup(p->odr_out, package_oid);
3416         r->descriptor = 0;
3417         r->which = Z_External_update;
3418         r->indirect_reference = 0;
3419         r->u.update = (Z_IUUpdate *)
3420             odr_malloc(p->odr_out, sizeof(*r->u.update));
3421         
3422         r->u.update->which = Z_IUUpdate_esRequest;
3423         r->u.update->u.esRequest = (Z_IUUpdateEsRequest *)
3424             odr_malloc(p->odr_out, sizeof(*r->u.update->u.esRequest));
3425         toKeep = r->u.update->u.esRequest->toKeep = 
3426             (Z_IUOriginPartToKeep *)
3427             odr_malloc(p->odr_out, sizeof(*toKeep));
3428         
3429         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
3430         toKeep->schema = 0;
3431         
3432         toKeep->elementSetName = odr_strdup_null(p->odr_out, elementSetName);
3433             
3434         toKeep->actionQualifier = 0;
3435         toKeep->action = odr_intdup(p->odr_out, action_no);
3436         
3437         notToKeep = r->u.update->u.esRequest->notToKeep = 
3438             (Z_IUSuppliedRecords *)
3439             odr_malloc(p->odr_out, sizeof(*notToKeep));
3440         notToKeep->num = 1;
3441         notToKeep->elements = (Z_IUSuppliedRecords_elem **)
3442             odr_malloc(p->odr_out, sizeof(*notToKeep->elements));
3443         notToKeep->elements[0] = (Z_IUSuppliedRecords_elem *)
3444             odr_malloc(p->odr_out, sizeof(**notToKeep->elements));
3445         notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_opaque;
3446         if (recordIdOpaque)
3447         {
3448             notToKeep->elements[0]->u.opaque = 
3449                 odr_create_Odr_oct(p->odr_out,
3450                                    (const unsigned char *) recordIdOpaque,
3451                                    recordIdOpaque_len);
3452         }
3453         else if (recordIdNumber)
3454         {
3455             notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_number;
3456             
3457             notToKeep->elements[0]->u.number =
3458                 odr_intdup(p->odr_out, atoi(recordIdNumber));
3459         }
3460         else
3461             notToKeep->elements[0]->u.opaque = 0;
3462         notToKeep->elements[0]->supplementalId = 0;
3463         if (correlationInfo_note || correlationInfo_id)
3464         {
3465             Z_IUCorrelationInfo *ci;
3466             ci = notToKeep->elements[0]->correlationInfo =
3467                 (Z_IUCorrelationInfo *) odr_malloc(p->odr_out, sizeof(*ci));
3468             ci->note = odr_strdup_null(p->odr_out, correlationInfo_note);
3469             ci->id = correlationInfo_id ?
3470                 odr_intdup(p->odr_out, atoi(correlationInfo_id)) : 0;
3471         }
3472         else
3473             notToKeep->elements[0]->correlationInfo = 0;
3474         if (recordOpaque_buf)
3475         {
3476             notToKeep->elements[0]->record =
3477                 z_ext_record_oid_any(p->odr_out, syntax_oid,
3478                                  recordOpaque_buf, recordOpaque_len);
3479         }
3480         else
3481         {
3482             notToKeep->elements[0]->record =
3483                 z_ext_record_oid(p->odr_out, syntax_oid,
3484                                  record_buf, record_len);
3485         }
3486     }
3487     if (0 && apdu)
3488     {
3489         ODR print = odr_createmem(ODR_PRINT);
3490
3491         z_APDU(print, &apdu, 0, 0);
3492         odr_destroy(print);
3493     }
3494     return apdu;
3495 }
3496
3497 ZOOM_API(void)
3498     ZOOM_package_send(ZOOM_package p, const char *type)
3499 {
3500     Z_APDU *apdu = 0;
3501     ZOOM_connection c;
3502     if (!p)
3503         return;
3504     c = p->connection;
3505     odr_reset(p->odr_out);
3506     xfree(p->buf_out);
3507     p->buf_out = 0;
3508     if (!strcmp(type, "itemorder"))
3509     {
3510         apdu = create_es_package(p, yaz_oid_extserv_item_order);
3511         if (apdu)
3512         {
3513             Z_External *r = (Z_External *) odr_malloc(p->odr_out, sizeof(*r));
3514             
3515             r->direct_reference = 
3516                 odr_oiddup(p->odr_out, yaz_oid_extserv_item_order);
3517             r->descriptor = 0;
3518             r->which = Z_External_itemOrder;
3519             r->indirect_reference = 0;
3520             r->u.itemOrder = encode_item_order(p);
3521
3522             apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3523         }
3524     }
3525     else if (!strcmp(type, "create"))  /* create database */
3526     {
3527         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_create,
3528                                     0, 0);
3529     }   
3530     else if (!strcmp(type, "drop"))  /* drop database */
3531     {
3532         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_drop,
3533                                     0, 0);
3534     }
3535     else if (!strcmp(type, "commit"))  /* commit changes */
3536     {
3537         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_commit,
3538                                     0, 0);
3539     }
3540     else if (!strcmp(type, "update")) /* update record(s) */
3541     {
3542         apdu = create_update_package(p);
3543     }
3544     else if (!strcmp(type, "xmlupdate"))
3545     {
3546         apdu = create_xmlupdate_package(p);
3547     }
3548     if (apdu)
3549     {
3550         if (encode_APDU(p->connection, apdu, p->odr_out) == 0)
3551         {
3552             char *buf;
3553
3554             ZOOM_task task = ZOOM_connection_add_task(c, ZOOM_TASK_PACKAGE);
3555             task->u.package = p;
3556             buf = odr_getbuf(p->odr_out, &p->len_out, 0);
3557             p->buf_out = (char *) xmalloc(p->len_out);
3558             memcpy(p->buf_out, buf, p->len_out);
3559             
3560             (p->refcount)++;
3561             if (!c->async)
3562             {
3563                 while (ZOOM_event(1, &c))
3564                     ;
3565             }
3566         }
3567     }
3568 }
3569
3570 ZOOM_API(ZOOM_package)
3571     ZOOM_connection_package(ZOOM_connection c, ZOOM_options options)
3572 {
3573     ZOOM_package p = (ZOOM_package) xmalloc(sizeof(*p));
3574
3575     p->connection = c;
3576     p->odr_out = odr_createmem(ODR_ENCODE);
3577     p->options = ZOOM_options_create_with_parent2(options, c->options);
3578     p->refcount = 1;
3579     p->buf_out = 0;
3580     p->len_out = 0;
3581     return p;
3582 }
3583
3584 ZOOM_API(void)
3585     ZOOM_package_destroy(ZOOM_package p)
3586 {
3587     if (!p)
3588         return;
3589     (p->refcount)--;
3590     if (p->refcount == 0)
3591     {
3592         odr_destroy(p->odr_out);
3593         xfree(p->buf_out);
3594         
3595         ZOOM_options_destroy(p->options);
3596         xfree(p);
3597     }
3598 }
3599
3600 ZOOM_API(const char *)
3601     ZOOM_package_option_get(ZOOM_package p, const char *key)
3602 {
3603     return ZOOM_options_get(p->options, key);
3604 }
3605
3606 ZOOM_API(const char *)
3607     ZOOM_package_option_getl(ZOOM_package p, const char *key, int *lenp)
3608 {
3609     return ZOOM_options_getl(p->options, key, lenp);
3610 }
3611
3612 ZOOM_API(void)
3613     ZOOM_package_option_set(ZOOM_package p, const char *key,
3614                             const char *val)
3615 {
3616     ZOOM_options_set(p->options, key, val);
3617 }
3618
3619 ZOOM_API(void)
3620     ZOOM_package_option_setl(ZOOM_package p, const char *key,
3621                              const char *val, int len)
3622 {
3623     ZOOM_options_setl(p->options, key, val, len);
3624 }
3625
3626 static int ZOOM_connection_exec_task(ZOOM_connection c)
3627 {
3628     ZOOM_task task = c->tasks;
3629     zoom_ret ret = zoom_complete;
3630
3631     if (!task)
3632         return 0;
3633     yaz_log(log_details, "%p ZOOM_connection_exec_task type=%d run=%d",
3634             c, task->which, task->running);
3635     if (c->error != ZOOM_ERROR_NONE)
3636     {
3637         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3638                 "removing tasks because of error = %d", c, c->error);
3639         ZOOM_connection_remove_tasks(c);
3640         return 0;
3641     }
3642     if (task->running)
3643     {
3644         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3645                 "task already running", c);
3646         return 0;
3647     }
3648     task->running = 1;
3649     ret = zoom_complete;
3650     if (c->cs || task->which == ZOOM_TASK_CONNECT)
3651     {
3652         switch (task->which)
3653         {
3654         case ZOOM_TASK_SEARCH:
3655             if (c->proto == PROTO_HTTP)
3656                 ret = ZOOM_connection_srw_send_search(c);
3657             else
3658                 ret = ZOOM_connection_send_search(c);
3659             break;
3660         case ZOOM_TASK_RETRIEVE:
3661             if (c->proto == PROTO_HTTP)
3662                 ret = ZOOM_connection_srw_send_search(c);
3663             else
3664                 ret = send_present(c);
3665             break;
3666         case ZOOM_TASK_CONNECT:
3667             ret = do_connect(c);
3668             break;
3669         case ZOOM_TASK_SCAN:
3670             if (c->proto == PROTO_HTTP)
3671                 ret = ZOOM_connection_srw_send_scan(c);
3672             else
3673                 ret = ZOOM_connection_send_scan(c);
3674             break;
3675         case ZOOM_TASK_PACKAGE:
3676             ret = send_package(c);
3677             break;
3678         case ZOOM_TASK_SORT:
3679             c->tasks->u.sort.resultset->r_sort_spec = 
3680                 c->tasks->u.sort.q->sort_spec;
3681             ret = send_sort(c, c->tasks->u.sort.resultset);
3682             break;
3683         }
3684     }
3685     else
3686     {
3687         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3688                 "remove tasks because no connection exist", c);
3689         ZOOM_connection_remove_tasks(c);
3690     }
3691     if (ret == zoom_complete)
3692     {
3693         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3694                 "task removed (complete)", c);
3695         ZOOM_connection_remove_task(c);
3696         return 0;
3697     }
3698     yaz_log(log_details, "%p ZOOM_connection_exec_task "
3699             "task pending", c);
3700     return 1;
3701 }
3702
3703 static zoom_ret send_sort_present(ZOOM_connection c)
3704 {
3705     zoom_ret r = zoom_complete;
3706
3707     if (c->tasks && c->tasks->which == ZOOM_TASK_SEARCH)
3708         r = send_sort(c, c->tasks->u.search.resultset);
3709     if (r == zoom_complete)
3710         r = send_present(c);
3711     return r;
3712 }
3713
3714 static int es_response_taskpackage_update(ZOOM_connection c,
3715                 Z_IUUpdateTaskPackage *utp)
3716 {
3717         if (utp && utp->targetPart)
3718         {
3719                 Z_IUTargetPart *targetPart = utp->targetPart;
3720                 switch ( *targetPart->updateStatus ) {
3721                         case Z_IUTargetPart_success:
3722                                 ZOOM_options_set(c->tasks->u.package->options,"updateStatus", "success");
3723                                 break;
3724                         case Z_IUTargetPart_partial:
3725                                 ZOOM_options_set(c->tasks->u.package->options,"updateStatus", "partial");
3726                                 break;
3727                         case Z_IUTargetPart_failure:
3728                                 ZOOM_options_set(c->tasks->u.package->options,"updateStatus", "failure");
3729                                 if (targetPart->globalDiagnostics && targetPart->num_globalDiagnostics > 0)
3730                                         response_diag(c, targetPart->globalDiagnostics[0]);
3731                                 break;
3732                 }
3733                 // NOTE: Individual record status, surrogate diagnostics, and supplemental diagnostics ARE NOT REPORTED.
3734         }
3735     return 1;
3736 }
3737
3738 static int es_response_taskpackage(ZOOM_connection c,
3739                                    Z_TaskPackage *taskPackage)
3740 {
3741         // targetReference
3742         Odr_oct *id = taskPackage->targetReference;
3743         if (id)
3744                 ZOOM_options_setl(c->tasks->u.package->options,
3745                                                         "targetReference", (char*) id->buf, id->len);
3746         
3747         // taskStatus
3748         switch ( *taskPackage->taskStatus ) {
3749                 case Z_TaskPackage_pending:
3750                         ZOOM_options_set(c->tasks->u.package->options,"taskStatus", "pending");
3751                         break;
3752                 case Z_TaskPackage_active:
3753                         ZOOM_options_set(c->tasks->u.package->options,"taskStatus", "active");
3754                         break;
3755                 case Z_TaskPackage_complete:
3756                         ZOOM_options_set(c->tasks->u.package->options,"taskStatus", "complete");
3757                         break;
3758                 case Z_TaskPackage_aborted:
3759                         ZOOM_options_set(c->tasks->u.package->options,"taskStatus", "aborted");
3760                         if ( taskPackage->num_packageDiagnostics && taskPackage->packageDiagnostics )
3761                                 response_diag(c, taskPackage->packageDiagnostics[0]);
3762                         break;
3763         }
3764         
3765         // taskSpecificParameters
3766         // NOTE: Only Update implemented, no others.
3767         if ( taskPackage->taskSpecificParameters->which == Z_External_update ) {
3768                         Z_IUUpdateTaskPackage *utp = taskPackage->taskSpecificParameters->u.update->u.taskPackage;
3769                         es_response_taskpackage_update(c, utp);
3770         }
3771         return 1;
3772 }
3773
3774
3775 static int es_response(ZOOM_connection c,
3776                        Z_ExtendedServicesResponse *res)
3777 {
3778     if (!c->tasks || c->tasks->which != ZOOM_TASK_PACKAGE)
3779         return 0;
3780     switch (*res->operationStatus) {
3781         case Z_ExtendedServicesResponse_done:
3782             ZOOM_options_set(c->tasks->u.package->options,"operationStatus", "done");
3783             break;
3784         case Z_ExtendedServicesResponse_accepted:
3785             ZOOM_options_set(c->tasks->u.package->options,"operationStatus", "accepted");
3786             break;
3787         case Z_ExtendedServicesResponse_failure:
3788             ZOOM_options_set(c->tasks->u.package->options,"operationStatus", "failure");
3789             if (res->diagnostics && res->num_diagnostics > 0)
3790                 response_diag(c, res->diagnostics[0]);
3791             break;
3792     }
3793     if (res->taskPackage &&
3794         res->taskPackage->which == Z_External_extendedService)
3795     {
3796         Z_TaskPackage *taskPackage = res->taskPackage->u.extendedService;
3797         es_response_taskpackage(c, taskPackage);
3798     }
3799     if (res->taskPackage && 
3800         res->taskPackage->which == Z_External_octet)
3801     {
3802         Odr_oct *doc = res->taskPackage->u.octet_aligned;
3803         ZOOM_options_setl(c->tasks->u.package->options,
3804                           "xmlUpdateDoc", (char*) doc->buf, doc->len);
3805     }
3806     return 1;
3807 }
3808
3809 static void interpret_init_diag(ZOOM_connection c,
3810                                 Z_DiagnosticFormat *diag)
3811 {
3812     if (diag->num > 0)
3813     {
3814         Z_DiagnosticFormat_s *ds = diag->elements[0];
3815         if (ds->which == Z_DiagnosticFormat_s_defaultDiagRec)
3816             response_default_diag(c, ds->u.defaultDiagRec);
3817     }
3818 }
3819
3820
3821 static void interpret_otherinformation_field(ZOOM_connection c,
3822                                              Z_OtherInformation *ui)
3823 {
3824     int i;
3825     for (i = 0; i < ui->num_elements; i++)
3826     {
3827         Z_OtherInformationUnit *unit = ui->list[i];
3828         if (unit->which == Z_OtherInfo_externallyDefinedInfo &&
3829             unit->information.externallyDefinedInfo &&
3830             unit->information.externallyDefinedInfo->which ==
3831             Z_External_diag1) 
3832         {
3833             interpret_init_diag(c, unit->information.externallyDefinedInfo->u.diag1);
3834         } 
3835     }
3836 }
3837
3838
3839 static void set_init_option(const char *name, void *clientData) {
3840     ZOOM_connection c = (ZOOM_connection) clientData;
3841     char buf[80];
3842
3843     sprintf(buf, "init_opt_%.70s", name);
3844     ZOOM_connection_option_set(c, buf, "1");
3845 }
3846
3847
3848 static void recv_apdu(ZOOM_connection c, Z_APDU *apdu)
3849 {
3850     Z_InitResponse *initrs;
3851     
3852     ZOOM_connection_set_mask(c, 0);
3853     yaz_log(log_details, "%p recv_apdu apdu->which=%d", c, apdu->which);
3854     switch(apdu->which)
3855     {
3856     case Z_APDU_initResponse:
3857         yaz_log(log_api, "%p recv_apdu: Received Init response", c);
3858         initrs = apdu->u.initResponse;
3859         ZOOM_connection_option_set(c, "serverImplementationId",
3860                                    initrs->implementationId ?
3861                                    initrs->implementationId : "");
3862         ZOOM_connection_option_set(c, "serverImplementationName",
3863                                    initrs->implementationName ?
3864                                    initrs->implementationName : "");
3865         ZOOM_connection_option_set(c, "serverImplementationVersion",
3866                                    initrs->implementationVersion ?
3867                                    initrs->implementationVersion : "");
3868         /* Set the three old options too, for old applications */
3869         ZOOM_connection_option_set(c, "targetImplementationId",
3870                                    initrs->implementationId ?
3871                                    initrs->implementationId : "");
3872         ZOOM_connection_option_set(c, "targetImplementationName",
3873                                    initrs->implementationName ?
3874                                    initrs->implementationName : "");
3875         ZOOM_connection_option_set(c, "targetImplementationVersion",
3876                                    initrs->implementationVersion ?
3877                                    initrs->implementationVersion : "");
3878
3879         /* Make initrs->options available as ZOOM-level options */
3880         yaz_init_opt_decode(initrs->options, set_init_option, (void*) c);
3881
3882         if (!*initrs->result)
3883         {
3884             Z_External *uif = initrs->userInformationField;
3885
3886             set_ZOOM_error(c, ZOOM_ERROR_INIT, 0); /* default error */
3887
3888             if (uif && uif->which == Z_External_userInfo1)
3889                 interpret_otherinformation_field(c, uif->u.userInfo1);
3890         }
3891         else
3892         {
3893             char *cookie =
3894                 yaz_oi_get_string_oid(&apdu->u.initResponse->otherInfo,
3895                                       yaz_oid_userinfo_cookie, 1, 0);
3896             xfree(c->cookie_in);
3897             c->cookie_in = 0;
3898             if (cookie)
3899                 c->cookie_in = xstrdup(cookie);
3900             if (ODR_MASK_GET(initrs->options, Z_Options_namedResultSets) &&
3901                 ODR_MASK_GET(initrs->protocolVersion, Z_ProtocolVersion_3))
3902                 c->support_named_resultsets = 1;
3903             if (c->tasks)
3904             {
3905                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
3906                 ZOOM_connection_remove_task(c);
3907             }
3908             ZOOM_connection_exec_task(c);
3909         }
3910         if (ODR_MASK_GET(initrs->options, Z_Options_negotiationModel))
3911         {
3912             NMEM tmpmem = nmem_create();
3913             Z_CharSetandLanguageNegotiation *p =
3914                 yaz_get_charneg_record(initrs->otherInfo);
3915             
3916             if (p)
3917             {
3918                 char *charset = NULL, *lang = NULL;
3919                 int sel;
3920                 
3921                 yaz_get_response_charneg(tmpmem, p, &charset, &lang, &sel);
3922                 yaz_log(log_details, "%p recv_apdu target accepted: "
3923                         "charset %s, language %s, select %d",
3924                         c,
3925                         charset ? charset : "none", lang ? lang : "none", sel);
3926                 if (charset)
3927                     ZOOM_connection_option_set(c, "negotiation-charset",
3928                                                charset);
3929                 if (lang)
3930                     ZOOM_connection_option_set(c, "negotiation-lang",
3931                                                lang);
3932
3933                 ZOOM_connection_option_set(
3934                     c,  "negotiation-charset-in-effect-for-records",
3935                     (sel != 0) ? "1" : "0");
3936                 nmem_destroy(tmpmem);
3937             }
3938         }       
3939         break;
3940     case Z_APDU_searchResponse:
3941         yaz_log(log_api, "%p recv_apdu Search response", c);
3942         handle_search_response(c, apdu->u.searchResponse);
3943         if (send_sort_present(c) == zoom_complete)
3944             ZOOM_connection_remove_task(c);
3945         break;
3946     case Z_APDU_presentResponse:
3947         yaz_log(log_api, "%p recv_apdu Present response", c);
3948         handle_present_response(c, apdu->u.presentResponse);
3949         if (send_present(c) == zoom_complete)
3950             ZOOM_connection_remove_task(c);
3951         break;
3952     case Z_APDU_sortResponse:
3953         yaz_log(log_api, "%p recv_apdu Sort response", c);
3954         sort_response(c, apdu->u.sortResponse);
3955         if (send_present(c) == zoom_complete)
3956             ZOOM_connection_remove_task(c);
3957         break;
3958     case Z_APDU_scanResponse:
3959         yaz_log(log_api, "%p recv_apdu Scan response", c);
3960         scan_response(c, apdu->u.scanResponse);
3961         ZOOM_connection_remove_task(c);
3962         break;
3963     case Z_APDU_extendedServicesResponse:
3964         yaz_log(log_api, "%p recv_apdu Extended Services response", c);
3965         es_response(c, apdu->u.extendedServicesResponse);
3966         ZOOM_connection_remove_task(c);
3967         break;
3968     case Z_APDU_close:
3969         yaz_log(log_api, "%p recv_apdu Close PDU", c);
3970         if (!ZOOM_test_reconnect(c))
3971         {
3972             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3973             do_close(c);
3974         }
3975         break;
3976     default:
3977         yaz_log(log_api, "%p Received unknown PDU", c);
3978         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3979         do_close(c);
3980     }
3981 }
3982
3983 #if YAZ_HAVE_XML2
3984 static zoom_ret handle_srw_response(ZOOM_connection c,
3985                                     Z_SRW_searchRetrieveResponse *res)
3986 {
3987     ZOOM_resultset resultset = 0;
3988     int i;
3989     NMEM nmem;
3990     ZOOM_Event event;
3991     int *start, *count;
3992     const char *syntax, *elementSetName;
3993
3994     if (!c->tasks)
3995         return zoom_complete;
3996
3997     switch(c->tasks->which)
3998     {
3999     case ZOOM_TASK_SEARCH:
4000         resultset = c->tasks->u.search.resultset;
4001         start = &c->tasks->u.search.start;
4002         count = &c->tasks->u.search.count;
4003         syntax = c->tasks->u.search.syntax;
4004         elementSetName = c->tasks->u.search.elementSetName;        
4005
4006         if (!c->tasks->u.search.recv_search_fired)
4007         {
4008             event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
4009             ZOOM_connection_put_event(c, event);
4010             c->tasks->u.search.recv_search_fired = 1;
4011         }
4012         break;
4013     case ZOOM_TASK_RETRIEVE:
4014         resultset = c->tasks->u.retrieve.resultset;
4015         start = &c->tasks->u.retrieve.start;
4016         count = &c->tasks->u.retrieve.count;
4017         syntax = c->tasks->u.retrieve.syntax;
4018         elementSetName = c->tasks->u.retrieve.elementSetName;
4019         break;
4020     default:
4021         return zoom_complete;
4022     }
4023
4024     resultset->size = 0;
4025
4026     if (res->resultSetId)
4027         ZOOM_resultset_option_set(resultset, "resultSetId", res->resultSetId);
4028
4029     yaz_log(log_details, "%p handle_srw_response got SRW response OK", c);
4030
4031     if (res->num_diagnostics > 0)
4032     {
4033         set_SRU_error(c, &res->diagnostics[0]);
4034     }
4035     else
4036     {
4037         if (res->numberOfRecords)
4038             resultset->size = *res->numberOfRecords;
4039         for (i = 0; i<res->num_records; i++)
4040         {
4041             int pos;
4042             Z_SRW_record *sru_rec;
4043             Z_SRW_diagnostic *diag = 0;
4044             int num_diag;
4045             
4046             Z_NamePlusRecord *npr = (Z_NamePlusRecord *)
4047                 odr_malloc(c->odr_in, sizeof(Z_NamePlusRecord));
4048             
4049             if (res->records[i].recordPosition && 
4050                 *res->records[i].recordPosition > 0)
4051                 pos = *res->records[i].recordPosition - 1;
4052             else
4053                 pos = *start + i;
4054             
4055             sru_rec = &res->records[i];
4056             
4057             npr->databaseName = 0;
4058             npr->which = Z_NamePlusRecord_databaseRecord;
4059             npr->u.databaseRecord = (Z_External *)
4060                 odr_malloc(c->odr_in, sizeof(Z_External));
4061             npr->u.databaseRecord->descriptor = 0;
4062             npr->u.databaseRecord->direct_reference =
4063                 odr_oiddup(c->odr_in, yaz_oid_recsyn_xml);
4064             npr->u.databaseRecord->which = Z_External_octet;
4065             
4066             npr->u.databaseRecord->u.octet_aligned = (Odr_oct *)
4067                 odr_malloc(c->odr_in, sizeof(Odr_oct));
4068             npr->u.databaseRecord->u.octet_aligned->buf = (unsigned char*)
4069                 sru_rec->recordData_buf;
4070             npr->u.databaseRecord->u.octet_aligned->len = 
4071                 npr->u.databaseRecord->u.octet_aligned->size = 
4072                 sru_rec->recordData_len;
4073             
4074             if (sru_rec->recordSchema 
4075                 && !strcmp(sru_rec->recordSchema,
4076                            "info:srw/schema/1/diagnostics-v1.1"))
4077             {
4078                 sru_decode_surrogate_diagnostics(sru_rec->recordData_buf,
4079                                                  sru_rec->recordData_len,
4080                                                  &diag, &num_diag,
4081                                                  resultset->odr);
4082             }
4083             record_cache_add(resultset, npr, pos, syntax, elementSetName,
4084                              sru_rec->recordSchema, diag);
4085         }
4086         *count -= i;
4087         *start += i;
4088         if (*count + *start > resultset->size)
4089             *count = resultset->size - *start;
4090         if (*count < 0)
4091             *count = 0;
4092         
4093         nmem = odr_extract_mem(c->odr_in);
4094         nmem_transfer(odr_getmem(resultset->odr), nmem);
4095         nmem_destroy(nmem);
4096
4097         if (*count > 0)
4098             return ZOOM_connection_srw_send_search(c);
4099     }
4100     return zoom_complete;
4101 }
4102 #endif
4103
4104 #if YAZ_HAVE_XML2
4105 static void handle_srw_scan_response(ZOOM_connection c,
4106                                      Z_SRW_scanResponse *res)
4107 {
4108     NMEM nmem = odr_extract_mem(c->odr_in);
4109     ZOOM_scanset scan;
4110
4111     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
4112         return;
4113     scan = c->tasks->u.scan.scan;
4114
4115     if (res->num_diagnostics > 0)
4116         set_SRU_error(c, &res->diagnostics[0]);
4117
4118     scan->scan_response = 0;
4119     scan->srw_scan_response = res;
4120     nmem_transfer(odr_getmem(scan->odr), nmem);
4121
4122     ZOOM_options_set_int(scan->options, "number", res->num_terms);
4123     nmem_destroy(nmem);
4124 }
4125 #endif
4126
4127 #if YAZ_HAVE_XML2
4128 static void handle_http(ZOOM_connection c, Z_HTTP_Response *hres)
4129 {
4130     zoom_ret cret = zoom_complete;
4131     int ret = -1;
4132     const char *addinfo = 0;
4133     const char *connection_head = z_HTTP_header_lookup(hres->headers,
4134                                                        "Connection");
4135     ZOOM_connection_set_mask(c, 0);
4136     yaz_log(log_details, "%p handle_http", c);
4137     
4138     if (!yaz_srw_check_content_type(hres))
4139         addinfo = "content-type";
4140     else
4141     {
4142         Z_SOAP *soap_package = 0;
4143         ODR o = c->odr_in;
4144         Z_SOAP_Handler soap_handlers[2] = {
4145             {YAZ_XMLNS_SRU_v1_1, 0, (Z_SOAP_fun) yaz_srw_codec},
4146             {0, 0, 0}
4147         };
4148         ret = z_soap_codec(o, &soap_package,
4149                            &hres->content_buf, &hres->content_len,
4150                            soap_handlers);
4151         if (!ret && soap_package->which == Z_SOAP_generic &&
4152             soap_package->u.generic->no == 0)
4153         {
4154             Z_SRW_PDU *sr = (Z_SRW_PDU*) soap_package->u.generic->p;
4155
4156             ZOOM_options_set(c->options, "sru_version", sr->srw_version);
4157             if (sr->which == Z_SRW_searchRetrieve_response)
4158                 cret = handle_srw_response(c, sr->u.response);
4159             else if (sr->which == Z_SRW_scan_response)
4160                 handle_srw_scan_response(c, sr->u.scan_response);
4161             else
4162                 ret = -1;
4163         }
4164         else if (!ret && (soap_package->which == Z_SOAP_fault
4165                           || soap_package->which == Z_SOAP_error))
4166         {
4167             set_HTTP_error(c, hres->code,
4168                            soap_package->u.fault->fault_code,
4169                            soap_package->u.fault->fault_string);
4170         }
4171         else
4172             ret = -1;
4173     }
4174     if (ret)
4175     {
4176         if (hres->code != 200)
4177             set_HTTP_error(c, hres->code, 0, 0);
4178         else
4179             set_ZOOM_error(c, ZOOM_ERROR_DECODE, addinfo);
4180         do_close(c);
4181     }
4182     if (cret == zoom_complete)
4183         ZOOM_connection_remove_task(c);
4184     if (!strcmp(hres->version, "1.0"))
4185     {
4186         /* HTTP 1.0: only if Keep-Alive we stay alive.. */
4187         if (!connection_head || strcmp(connection_head, "Keep-Alive"))
4188             do_close(c);
4189     }
4190     else 
4191     {
4192         /* HTTP 1.1: only if no close we stay alive .. */
4193         if (connection_head && !strcmp(connection_head, "close"))
4194             do_close(c);
4195     }
4196 }
4197 #endif
4198
4199 static int do_read(ZOOM_connection c)
4200 {
4201     int r, more;
4202     ZOOM_Event event;
4203     
4204     event = ZOOM_Event_create(ZOOM_EVENT_RECV_DATA);
4205     ZOOM_connection_put_event(c, event);
4206     
4207     r = cs_get(c->cs, &c->buf_in, &c->len_in);
4208     more = cs_more(c->cs);
4209     yaz_log(log_details, "%p do_read len=%d more=%d", c, r, more);
4210     if (r == 1)
4211         return 0;
4212     if (r <= 0)
4213     {
4214         if (!ZOOM_test_reconnect(c))
4215         {
4216             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
4217             do_close(c);
4218         }
4219     }
4220     else
4221     {
4222         Z_GDU *gdu;
4223         ZOOM_Event event;
4224
4225         odr_reset(c->odr_in);
4226         odr_setbuf(c->odr_in, c->buf_in, r, 0);
4227         event = ZOOM_Event_create(ZOOM_EVENT_RECV_APDU);
4228         ZOOM_connection_put_event(c, event);
4229
4230         if (!z_GDU(c->odr_in, &gdu, 0, 0))
4231         {
4232             int x;
4233             int err = odr_geterrorx(c->odr_in, &x);
4234             char msg[100];
4235             const char *element = odr_getelement(c->odr_in);
4236             yaz_snprintf(msg, sizeof(msg),
4237                     "ODR code %d:%d element=%s offset=%d",
4238                     err, x, element ? element : "<unknown>",
4239                     odr_offset(c->odr_in));
4240             set_ZOOM_error(c, ZOOM_ERROR_DECODE, msg);
4241             if (log_api)
4242             {
4243                 FILE *ber_file = yaz_log_file();
4244                 if (ber_file)
4245                     odr_dumpBER(ber_file, c->buf_in, r);
4246             }
4247             do_close(c);
4248         }
4249         else
4250         {
4251             if (c->odr_print)
4252                 z_GDU(c->odr_print, &gdu, 0, 0);
4253             if (gdu->which == Z_GDU_Z3950)
4254                 recv_apdu(c, gdu->u.z3950);
4255             else if (gdu->which == Z_GDU_HTTP_Response)
4256             {
4257 #if YAZ_HAVE_XML2
4258                 handle_http(c, gdu->u.HTTP_Response);
4259 #else
4260                 set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
4261                 do_close(c);
4262 #endif
4263             }
4264         }
4265         c->reconnect_ok = 0;
4266     }
4267     return 1;
4268 }
4269
4270 static zoom_ret do_write_ex(ZOOM_connection c, char *buf_out, int len_out)
4271 {
4272     int r;
4273     ZOOM_Event event;
4274     
4275     event = ZOOM_Event_create(ZOOM_EVENT_SEND_DATA);
4276     ZOOM_connection_put_event(c, event);
4277
4278     yaz_log(log_details, "%p do_write_ex len=%d", c, len_out);
4279     if ((r = cs_put(c->cs, buf_out, len_out)) < 0)
4280     {
4281         yaz_log(log_details, "%p do_write_ex write failed", c);
4282         if (ZOOM_test_reconnect(c))
4283         {
4284             return zoom_pending;
4285         }
4286         if (c->state == STATE_CONNECTING)
4287             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
4288         else
4289             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
4290         do_close(c);
4291         return zoom_complete;
4292     }
4293     else if (r == 1)
4294     {    
4295         int mask = ZOOM_SELECT_EXCEPT;
4296         if (c->cs->io_pending & CS_WANT_WRITE)
4297             mask += ZOOM_SELECT_WRITE;
4298         if (c->cs->io_pending & CS_WANT_READ)
4299             mask += ZOOM_SELECT_READ;
4300         ZOOM