src/zoom-c.c

   1 /* This file is part of the YAZ toolkit.
   2  * Copyright (C) 1995-2008 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     char *version;
1366
1367     ODR_MASK_SET(ireq->options, Z_Options_search);
1368     ODR_MASK_SET(ireq->options, Z_Options_present);
1369     ODR_MASK_SET(ireq->options, Z_Options_scan);
1370     ODR_MASK_SET(ireq->options, Z_Options_sort);
1371     ODR_MASK_SET(ireq->options, Z_Options_extendedServices);
1372     ODR_MASK_SET(ireq->options, Z_Options_namedResultSets);
1373
1374     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_1);
1375     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_2);
1376     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_3);
1377
1378     /* Index Data's Z39.50 Implementor Id is 81 */
1379     ireq->implementationId =
1380         odr_prepend(c->odr_out,
1381                     ZOOM_options_get(c->options, "implementationId"),
1382                     odr_prepend(c->odr_out, "81", ireq->implementationId));
1383
1384     ireq->implementationName =
1385         odr_prepend(c->odr_out,
1386                     ZOOM_options_get(c->options, "implementationName"),
1387                     odr_prepend(c->odr_out, "ZOOM-C",
1388                                 ireq->implementationName));
1389
1390     version = odr_strdup(c->odr_out, "$Revision: 1.154 $");
1391     if (strlen(version) > 10)   /* check for unexpanded CVS strings */
1392         version[strlen(version)-2] = '\0';
1393     ireq->implementationVersion =
1394         odr_prepend(c->odr_out,
1395                     ZOOM_options_get(c->options, "implementationVersion"),
1396                     odr_prepend(c->odr_out, &version[11],
1397                                 ireq->implementationVersion));
1398
1399     *ireq->maximumRecordSize = c->maximum_record_size;
1400     *ireq->preferredMessageSize = c->preferred_message_size;
1401
1402     if (c->group || c->password)
1403     {
1404         Z_IdPass *pass = (Z_IdPass *) odr_malloc(c->odr_out, sizeof(*pass));
1405         pass->groupId = odr_strdup_null(c->odr_out, c->group);
1406         pass->userId = odr_strdup_null(c->odr_out, c->user);
1407         pass->password = odr_strdup_null(c->odr_out, c->password);
1408         auth->which = Z_IdAuthentication_idPass;
1409         auth->u.idPass = pass;
1410         ireq->idAuthentication = auth;
1411     }
1412     else if (c->user)
1413     {
1414         auth->which = Z_IdAuthentication_open;
1415         auth->u.open = odr_strdup(c->odr_out, c->user);
1416         ireq->idAuthentication = auth;
1417     }
1418     if (c->proxy)
1419     {
1420         yaz_oi_set_string_oid(&ireq->otherInfo, c->odr_out,
1421                               yaz_oid_userinfo_proxy, 1, c->host_port);
1422     }
1423     if (c->charset || c->lang)
1424     {
1425         Z_OtherInformation **oi;
1426         Z_OtherInformationUnit *oi_unit;
1427
1428         yaz_oi_APDU(apdu, &oi);
1429
1430         if ((oi_unit = yaz_oi_update(oi, c->odr_out, NULL, 0, 0)))
1431         {
1432             ODR_MASK_SET(ireq->options, Z_Options_negotiationModel);
1433             oi_unit->which = Z_OtherInfo_externallyDefinedInfo;
1434             oi_unit->information.externallyDefinedInfo =
1435                 yaz_set_proposal_charneg_list(c->odr_out, " ",
1436                                               c->charset, c->lang, 1);
1437         }
1438     }
1439     assert(apdu);
1440     return send_APDU(c, apdu);
1441 }
1442
1443 #if YAZ_HAVE_XML2
1444 static zoom_ret send_srw(ZOOM_connection c, Z_SRW_PDU *sr)
1445 {
1446     Z_GDU *gdu;
1447     ZOOM_Event event;
1448     const char *database =  ZOOM_options_get(c->options, "databaseName");
1449     char *fdatabase = 0;
1450
1451     if (database)
1452     {
1453         fdatabase = (char *) odr_malloc(c->odr_out, strlen(database)+2);
1454         strcpy(fdatabase, "/");
1455         strcat(fdatabase, database);
1456     }
1457     gdu = z_get_HTTP_Request_host_path(c->odr_out, c->host_port,
1458                                        fdatabase ? fdatabase : c->path);
1459
1460     if (c->sru_mode == zoom_sru_get)
1461     {
1462         yaz_sru_get_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1463     }
1464     else if (c->sru_mode == zoom_sru_post)
1465     {
1466         yaz_sru_post_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1467     }
1468     else if (c->sru_mode == zoom_sru_soap)
1469     {
1470         yaz_sru_soap_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1471     }
1472     if (!z_GDU(c->odr_out, &gdu, 0, 0))
1473         return zoom_complete;
1474     if (c->odr_print)
1475         z_GDU(c->odr_print, &gdu, 0, 0);
1476     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1477
1478     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
1479     ZOOM_connection_put_event(c, event);
1480     odr_reset(c->odr_out);
1481     return do_write(c);
1482 }
1483 #endif
1484
1485 #if YAZ_HAVE_XML2
1486 static Z_SRW_PDU *ZOOM_srw_get_pdu(ZOOM_connection c, int type)
1487 {
1488     Z_SRW_PDU *sr = yaz_srw_get_pdu(c->odr_out, type, c->sru_version);
1489     sr->username = c->user;
1490     sr->password = c->password;
1491     return sr;
1492 }
1493 #endif
1494
1495 #if YAZ_HAVE_XML2
1496 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1497 {
1498     int i;
1499     int *start, *count;
1500     ZOOM_resultset resultset = 0;
1501     Z_SRW_PDU *sr = 0;
1502     const char *option_val = 0;
1503
1504     if (c->error)                  /* don't continue on error */
1505         return zoom_complete;
1506     assert(c->tasks);
1507     switch(c->tasks->which)
1508     {
1509     case ZOOM_TASK_SEARCH:
1510         resultset = c->tasks->u.search.resultset;
1511         if (!resultset->setname)
1512             resultset->setname = xstrdup("default");
1513         ZOOM_options_set(resultset->options, "setname", resultset->setname);
1514         start = &c->tasks->u.search.start;
1515         count = &c->tasks->u.search.count;
1516         break;
1517     case ZOOM_TASK_RETRIEVE:
1518         resultset = c->tasks->u.retrieve.resultset;
1519
1520         start = &c->tasks->u.retrieve.start;
1521         count = &c->tasks->u.retrieve.count;
1522
1523         if (*start >= resultset->size)
1524             return zoom_complete;
1525         if (*start + *count > resultset->size)
1526             *count = resultset->size - *start;
1527
1528         for (i = 0; i < *count; i++)
1529         {
1530             ZOOM_record rec =
1531                 record_cache_lookup(resultset, i + *start,
1532                                     c->tasks->u.retrieve.syntax,
1533                                     c->tasks->u.retrieve.elementSetName);
1534             if (!rec)
1535                 break;
1536             else
1537             {
1538                 ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
1539                 ZOOM_connection_put_event(c, event);
1540             }
1541         }
1542         *start += i;
1543         *count -= i;
1544
1545         if (*count == 0)
1546             return zoom_complete;
1547         break;
1548     default:
1549         return zoom_complete;
1550     }
1551     assert(resultset->query);
1552
1553     sr = ZOOM_srw_get_pdu(c, Z_SRW_searchRetrieve_request);
1554     if (resultset->query->z_query->which == Z_Query_type_104
1555         && resultset->query->z_query->u.type_104->which == Z_External_CQL)
1556     {
1557         sr->u.request->query_type = Z_SRW_query_type_cql;
1558         sr->u.request->query.cql =resultset->query->z_query->u.type_104->u.cql;
1559     }
1560     else if (resultset->query->z_query->which == Z_Query_type_1 &&
1561              resultset->query->z_query->u.type_1)
1562     {
1563         sr->u.request->query_type = Z_SRW_query_type_pqf;
1564         sr->u.request->query.pqf = resultset->query->query_string;
1565     }
1566     else
1567     {
1568         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
1569         return zoom_complete;
1570     }
1571     sr->u.request->startRecord = odr_intdup(c->odr_out, *start + 1);
1572     sr->u.request->maximumRecords = odr_intdup(
1573         c->odr_out, (resultset->step > 0 && resultset->step < *count) ?
1574         resultset->step : *count);
1575     sr->u.request->recordSchema = resultset->schema;
1576
1577     option_val = ZOOM_resultset_option_get(resultset, "recordPacking");
1578     if (option_val)
1579         sr->u.request->recordPacking = odr_strdup(c->odr_out, option_val);
1580
1581     option_val = ZOOM_resultset_option_get(resultset, "extraArgs");
1582     yaz_encode_sru_extra(sr, c->odr_out, option_val);
1583     return send_srw(c, sr);
1584 }
1585 #else
1586 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1587 {
1588     return zoom_complete;
1589 }
1590 #endif
1591
1592 static zoom_ret ZOOM_connection_send_search(ZOOM_connection c)
1593 {
1594     ZOOM_resultset r;
1595     int lslb, ssub, mspn;
1596     const char *syntax;
1597     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_searchRequest);
1598     Z_SearchRequest *search_req = apdu->u.searchRequest;
1599     const char *elementSetName;
1600     const char *smallSetElementSetName;
1601     const char *mediumSetElementSetName;
1602
1603     assert(c->tasks);
1604     assert(c->tasks->which == ZOOM_TASK_SEARCH);
1605
1606     r = c->tasks->u.search.resultset;
1607
1608     yaz_log(log_details, "%p ZOOM_connection_send_search set=%p", c, r);
1609
1610     elementSetName =
1611         ZOOM_options_get(r->options, "elementSetName");
1612     smallSetElementSetName  =
1613         ZOOM_options_get(r->options, "smallSetElementSetName");
1614     mediumSetElementSetName =
1615         ZOOM_options_get(r->options, "mediumSetElementSetName");
1616
1617     if (!smallSetElementSetName)
1618         smallSetElementSetName = elementSetName;
1619
1620     if (!mediumSetElementSetName)
1621         mediumSetElementSetName = elementSetName;
1622
1623     assert(r);
1624     assert(r->query);
1625
1626     /* prepare query for the search request */
1627     search_req->query = r->query->z_query;
1628     if (!search_req->query)
1629     {
1630         set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
1631         return zoom_complete;
1632     }
1633     if (r->query->z_query->which == Z_Query_type_1 ||
1634         r->query->z_query->which == Z_Query_type_101)
1635     {
1636         const char *cp = ZOOM_options_get(r->options, "rpnCharset");
1637         if (cp)
1638         {
1639             yaz_iconv_t cd = yaz_iconv_open(cp, "UTF-8");
1640             if (cd)
1641             {
1642                 search_req->query = yaz_copy_Z_Query(search_req->query,
1643                                                      c->odr_out);
1644
1645                 yaz_query_charset_convert_rpnquery(search_req->query->u.type_1,
1646                                                    c->odr_out, cd);
1647                 yaz_iconv_close(cd);
1648             }
1649         }
1650     }
1651     search_req->databaseNames = r->databaseNames;
1652     search_req->num_databaseNames = r->num_databaseNames;
1653
1654     /* get syntax (no need to provide unless piggyback is in effect) */
1655     syntax = c->tasks->u.search.syntax;
1656
1657     lslb = ZOOM_options_get_int(r->options, "largeSetLowerBound", -1);
1658     ssub = ZOOM_options_get_int(r->options, "smallSetUpperBound", -1);
1659     mspn = ZOOM_options_get_int(r->options, "mediumSetPresentNumber", -1);
1660     if (lslb != -1 && ssub != -1 && mspn != -1)
1661     {
1662         /* So're a Z39.50 expert? Let's hope you don't do sort */
1663         *search_req->largeSetLowerBound = lslb;
1664         *search_req->smallSetUpperBound = ssub;
1665         *search_req->mediumSetPresentNumber = mspn;
1666     }
1667     else if (c->tasks->u.search.start == 0 && c->tasks->u.search.count > 0
1668              && r->piggyback && !r->r_sort_spec && !r->schema)
1669     {
1670         /* Regular piggyback - do it unless we're going to do sort */
1671         *search_req->largeSetLowerBound = 2000000000;
1672         *search_req->smallSetUpperBound = 1;
1673         *search_req->mediumSetPresentNumber =
1674             r->step>0 ? r->step : c->tasks->u.search.count;
1675     }
1676     else
1677     {
1678         /* non-piggyback. Need not provide elementsets or syntaxes .. */
1679         smallSetElementSetName = 0;
1680         mediumSetElementSetName = 0;
1681         syntax = 0;
1682     }
1683     if (smallSetElementSetName && *smallSetElementSetName)
1684     {
1685         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1686             odr_malloc(c->odr_out, sizeof(*esn));
1687
1688         esn->which = Z_ElementSetNames_generic;
1689         esn->u.generic = odr_strdup(c->odr_out, smallSetElementSetName);
1690         search_req->smallSetElementSetNames = esn;
1691     }
1692     if (mediumSetElementSetName && *mediumSetElementSetName)
1693     {
1694         Z_ElementSetNames *esn =(Z_ElementSetNames *)
1695             odr_malloc(c->odr_out, sizeof(*esn));
1696
1697         esn->which = Z_ElementSetNames_generic;
1698         esn->u.generic = odr_strdup(c->odr_out, mediumSetElementSetName);
1699         search_req->mediumSetElementSetNames = esn;
1700     }
1701     if (syntax)
1702         search_req->preferredRecordSyntax =
1703             zoom_yaz_str_to_z3950oid(c, CLASS_RECSYN, syntax);
1704
1705     if (!r->setname)
1706     {
1707         if (c->support_named_resultsets)
1708         {
1709             char setname[14];
1710             int ord;
1711             /* find the lowest unused ordinal so that we re-use
1712                result sets on the server. */
1713             for (ord = 1; ; ord++)
1714             {
1715                 ZOOM_resultset rp;
1716                 sprintf(setname, "%d", ord);
1717                 for (rp = c->resultsets; rp; rp = rp->next)
1718                     if (rp->setname && !strcmp(rp->setname, setname))
1719                         break;
1720                 if (!rp)
1721                     break;
1722             }
1723             r->setname = xstrdup(setname);
1724             yaz_log(log_details, "%p ZOOM_connection_send_search: allocating "
1725                     "set %s", c, r->setname);
1726         }
1727         else
1728         {
1729             yaz_log(log_details, "%p ZOOM_connection_send_search: using "
1730                     "default set", c);
1731             r->setname = xstrdup("default");
1732         }
1733         ZOOM_options_set(r->options, "setname", r->setname);
1734     }
1735     search_req->resultSetName = odr_strdup(c->odr_out, r->setname);
1736     return send_APDU(c, apdu);
1737 }
1738
1739 static void response_default_diag(ZOOM_connection c, Z_DefaultDiagFormat *r)
1740 {
1741     char oid_name_buf[OID_STR_MAX];
1742     const char *oid_name;
1743     char *addinfo = 0;
1744
1745     oid_name = yaz_oid_to_string_buf(r->diagnosticSetId, 0, oid_name_buf);
1746     switch (r->which)
1747     {
1748     case Z_DefaultDiagFormat_v2Addinfo:
1749         addinfo = r->u.v2Addinfo;
1750         break;
1751     case Z_DefaultDiagFormat_v3Addinfo:
1752         addinfo = r->u.v3Addinfo;
1753         break;
1754     }
1755     xfree(c->addinfo);
1756     c->addinfo = 0;
1757     set_dset_error(c, *r->condition, oid_name, addinfo, 0);
1758 }
1759
1760 static void response_diag(ZOOM_connection c, Z_DiagRec *p)
1761 {
1762     if (p->which != Z_DiagRec_defaultFormat)
1763         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1764     else
1765         response_default_diag(c, p->u.defaultFormat);
1766 }
1767
1768 ZOOM_API(ZOOM_record)
1769     ZOOM_record_clone(ZOOM_record srec)
1770 {
1771     char *buf;
1772     int size;
1773     ODR odr_enc;
1774     ZOOM_record nrec;
1775
1776     odr_enc = odr_createmem(ODR_ENCODE);
1777     if (!z_NamePlusRecord(odr_enc, &srec->npr, 0, 0))
1778         return 0;
1779     buf = odr_getbuf(odr_enc, &size, 0);
1780
1781     nrec = (ZOOM_record) xmalloc(sizeof(*nrec));
1782     nrec->odr = odr_createmem(ODR_DECODE);
1783     nrec->wrbuf_marc = 0;
1784     nrec->wrbuf_iconv = 0;
1785     nrec->wrbuf_opac = 0;
1786     odr_setbuf(nrec->odr, buf, size, 0);
1787     z_NamePlusRecord(nrec->odr, &nrec->npr, 0, 0);
1788
1789     nrec->schema = odr_strdup_null(nrec->odr, srec->schema);
1790     nrec->diag_uri = odr_strdup_null(nrec->odr, srec->diag_uri);
1791     nrec->diag_message = odr_strdup_null(nrec->odr, srec->diag_message);
1792     nrec->diag_details = odr_strdup_null(nrec->odr, srec->diag_details);
1793     nrec->diag_set = odr_strdup_null(nrec->odr, srec->diag_set);
1794     odr_destroy(odr_enc);
1795     return nrec;
1796 }
1797
1798 ZOOM_API(ZOOM_record)
1799     ZOOM_resultset_record_immediate(ZOOM_resultset s,size_t pos)
1800 {
1801     const char *syntax =
1802         ZOOM_options_get(s->options, "preferredRecordSyntax");
1803     const char *elementSetName =
1804         ZOOM_options_get(s->options, "elementSetName");
1805
1806     return record_cache_lookup(s, pos, syntax, elementSetName);
1807 }
1808
1809 ZOOM_API(ZOOM_record)
1810     ZOOM_resultset_record(ZOOM_resultset r, size_t pos)
1811 {
1812     ZOOM_record rec = ZOOM_resultset_record_immediate(r, pos);
1813
1814     if (!rec)
1815     {
1816         /*
1817          * MIKE: I think force_sync should always be zero, but I don't
1818          * want to make this change until I get the go-ahead from
1819          * Adam, in case something depends on the old synchronous
1820          * behaviour.
1821          */
1822         int force_sync = 1;
1823         if (getenv("ZOOM_RECORD_NO_FORCE_SYNC")) force_sync = 0;
1824         ZOOM_resultset_retrieve(r, force_sync, pos, 1);
1825         rec = ZOOM_resultset_record_immediate(r, pos);
1826     }
1827     return rec;
1828 }
1829
1830 ZOOM_API(void)
1831     ZOOM_record_destroy(ZOOM_record rec)
1832 {
1833     if (!rec)
1834         return;
1835     if (rec->wrbuf_marc)
1836         wrbuf_destroy(rec->wrbuf_marc);
1837     if (rec->wrbuf_iconv)
1838         wrbuf_destroy(rec->wrbuf_iconv);
1839     if (rec->wrbuf_opac)
1840         wrbuf_destroy(rec->wrbuf_opac);
1841     odr_destroy(rec->odr);
1842     xfree(rec);
1843 }
1844
1845 static const char *marc_iconv_return(ZOOM_record rec, int marc_type,
1846                                      int *len,
1847                                      const char *buf, int sz,
1848                                      const char *record_charset)
1849 {
1850     char to[40];
1851     char from[40];
1852     yaz_iconv_t cd = 0;
1853     yaz_marc_t mt = yaz_marc_create();
1854
1855     *from = '\0';
1856     strcpy(to, "UTF-8");
1857     if (record_charset && *record_charset)
1858     {
1859         /* Use "from,to" or just "from" */
1860         const char *cp = strchr(record_charset, ',');
1861         int clen = strlen(record_charset);
1862         if (cp && cp[1])
1863         {
1864             strncpy( to, cp+1, sizeof(to)-1);
1865             to[sizeof(to)-1] = '\0';
1866             clen = cp - record_charset;
1867         }
1868         if (clen > sizeof(from)-1)
1869             clen = sizeof(from)-1;
1870
1871         if (clen)
1872             strncpy(from, record_charset, clen);
1873         from[clen] = '\0';
1874     }
1875
1876     if (*from && *to)
1877     {
1878         cd = yaz_iconv_open(to, from);
1879         yaz_marc_iconv(mt, cd);
1880     }
1881
1882     yaz_marc_xml(mt, marc_type);
1883     if (!rec->wrbuf_marc)
1884         rec->wrbuf_marc = wrbuf_alloc();
1885     wrbuf_rewind(rec->wrbuf_marc);
1886     if (yaz_marc_decode_wrbuf(mt, buf, sz, rec->wrbuf_marc) > 0)
1887     {
1888         yaz_marc_destroy(mt);
1889         if (cd)
1890             yaz_iconv_close(cd);
1891         if (len)
1892             *len = wrbuf_len(rec->wrbuf_marc);
1893         return wrbuf_cstr(rec->wrbuf_marc);
1894     }
1895     yaz_marc_destroy(mt);
1896     if (cd)
1897         yaz_iconv_close(cd);
1898     return 0;
1899 }
1900
1901 static const char *record_iconv_return(ZOOM_record rec, int *len,
1902                                        const char *buf, int sz,
1903                                        const char *record_charset)
1904 {
1905     char to[40];
1906     char from[40];
1907     yaz_iconv_t cd = 0;
1908
1909     *from = '\0';
1910     strcpy(to, "UTF-8");
1911
1912     if (record_charset && *record_charset)
1913     {
1914         /* Use "from,to" or just "from" */
1915         const char *cp = strchr(record_charset, ',');
1916         int clen = strlen(record_charset);
1917         if (cp && cp[1])
1918         {
1919             strncpy( to, cp+1, sizeof(to)-1);
1920             to[sizeof(to)-1] = '\0';
1921             clen = cp - record_charset;
1922         }
1923         if (clen > sizeof(from)-1)
1924             clen = sizeof(from)-1;
1925
1926         if (clen)
1927             strncpy(from, record_charset, clen);
1928         from[clen] = '\0';
1929     }
1930
1931     if (*from && *to && (cd = yaz_iconv_open(to, from)))
1932     {
1933         if (!rec->wrbuf_iconv)
1934             rec->wrbuf_iconv = wrbuf_alloc();
1935
1936         wrbuf_rewind(rec->wrbuf_iconv);
1937
1938         wrbuf_iconv_write(rec->wrbuf_iconv, cd, buf, sz);
1939         wrbuf_iconv_reset(rec->wrbuf_iconv, cd);
1940
1941         buf = wrbuf_cstr(rec->wrbuf_iconv);
1942         sz = wrbuf_len(rec->wrbuf_iconv);
1943         yaz_iconv_close(cd);
1944     }
1945     if (len)
1946         *len = sz;
1947     return buf;
1948 }
1949
1950
1951 ZOOM_API(int)
1952     ZOOM_record_error(ZOOM_record rec, const char **cp,
1953                       const char **addinfo, const char **diagset)
1954 {
1955     Z_NamePlusRecord *npr;
1956
1957     if (!rec)
1958         return 0;
1959
1960     npr = rec->npr;
1961     if (rec->diag_uri)
1962     {
1963         if (cp)
1964             *cp = rec->diag_message;
1965         if (addinfo)
1966             *addinfo = rec->diag_details;
1967         if (diagset)
1968             *diagset = rec->diag_set;
1969         return uri_to_code(rec->diag_uri);
1970     }
1971     if (npr && npr->which == Z_NamePlusRecord_surrogateDiagnostic)
1972     {
1973         Z_DiagRec *diag_rec = npr->u.surrogateDiagnostic;
1974         int error = YAZ_BIB1_UNSPECIFIED_ERROR;
1975         const char *add = 0;
1976
1977         if (diag_rec->which == Z_DiagRec_defaultFormat)
1978         {
1979             Z_DefaultDiagFormat *ddf = diag_rec->u.defaultFormat;
1980             oid_class oclass;
1981
1982             error = *ddf->condition;
1983             switch (ddf->which)
1984             {
1985             case Z_DefaultDiagFormat_v2Addinfo:
1986                 add = ddf->u.v2Addinfo;
1987                 break;
1988             case Z_DefaultDiagFormat_v3Addinfo:
1989                 add = ddf->u.v3Addinfo;
1990                 break;
1991             }
1992             if (diagset)
1993                 *diagset =
1994                     yaz_oid_to_string(yaz_oid_std(),
1995                                       ddf->diagnosticSetId, &oclass);
1996         }
1997         else
1998         {
1999             if (diagset)
2000                 *diagset = "Bib-1";
2001         }
2002         if (addinfo)
2003             *addinfo = add ? add : "";
2004         if (cp)
2005             *cp = diagbib1_str(error);
2006         return error;
2007     }
2008     return 0;
2009 }
2010
2011 ZOOM_API(const char *)
2012     ZOOM_record_get(ZOOM_record rec, const char *type_spec, int *len)
2013 {
2014     char type[40];
2015     char charset[40];
2016     char xpath[512];
2017     const char *cp;
2018     int i;
2019     Z_NamePlusRecord *npr;
2020
2021     if (len)
2022         *len = 0; /* default return */
2023
2024     if (!rec)
2025         return 0;
2026     npr = rec->npr;
2027     if (!npr)
2028         return 0;
2029
2030     cp = type_spec;
2031     for (i = 0; cp[i] && i < sizeof(type)-1; i++)
2032     {
2033         if (cp[i] == ';' || cp[i] == ' ')
2034             break;
2035         type[i] = cp[i];
2036     }
2037     type[i] = '\0';
2038     charset[0] = '\0';
2039     while (type_spec[i] == ';')
2040     {
2041         i++;
2042         while (type_spec[i] == ' ')
2043             i++;
2044         if (!strncmp(type_spec+i, "charset=", 8))
2045         {
2046             int j = 0;
2047             i = i + 8; /* skip charset= */
2048             for (j = 0; type_spec[i]  && j < sizeof(charset)-1; i++, j++)
2049             {
2050                 if (type_spec[i] == ';' || type_spec[i] == ' ')
2051                     break;
2052                 charset[j] = cp[i];
2053             }
2054             charset[j] = '\0';
2055         }
2056         else if (!strncmp(type_spec+i, "xpath=", 6))
2057         {
2058             int j = 0;
2059             i = i + 6;
2060             for (j = 0; type_spec[i] && j < sizeof(xpath)-1; i++, j++)
2061                 xpath[j] = cp[i];
2062             xpath[j] = '\0';
2063         }
2064         while (type_spec[i] == ' ')
2065             i++;
2066     }
2067     if (!strcmp(type, "database"))
2068     {
2069         if (len)
2070             *len = (npr->databaseName ? strlen(npr->databaseName) : 0);
2071         return npr->databaseName;
2072     }
2073     else if (!strcmp(type, "schema"))
2074     {
2075         if (len)
2076             *len = rec->schema ? strlen(rec->schema) : 0;
2077         return rec->schema;
2078     }
2079     else if (!strcmp(type, "syntax"))
2080     {
2081         const char *desc = 0;
2082         if (npr->which == Z_NamePlusRecord_databaseRecord)
2083         {
2084             Z_External *r = (Z_External *) npr->u.databaseRecord;
2085             desc = yaz_oid_to_string(yaz_oid_std(), r->direct_reference, 0);
2086         }
2087         if (!desc)
2088             desc = "none";
2089         if (len)
2090             *len = strlen(desc);
2091         return desc;
2092     }
2093     if (npr->which != Z_NamePlusRecord_databaseRecord)
2094         return 0;
2095
2096     /* from now on - we have a database record .. */
2097     if (!strcmp(type, "render"))
2098     {
2099         Z_External *r = (Z_External *) npr->u.databaseRecord;
2100         const Odr_oid *oid = r->direct_reference;
2101
2102         /* render bibliographic record .. */
2103         if (r->which == Z_External_OPAC)
2104         {
2105             r = r->u.opac->bibliographicRecord;
2106             if (!r)
2107                 return 0;
2108             oid = r->direct_reference;
2109         }
2110         if (r->which == Z_External_sutrs)
2111             return record_iconv_return(rec, len,
2112                                        (char*) r->u.sutrs->buf,
2113                                        r->u.sutrs->len,
2114                                        charset);
2115         else if (r->which == Z_External_octet)
2116         {
2117             if (yaz_oid_is_iso2709(oid))
2118             {
2119                 const char *ret_buf = marc_iconv_return(
2120                     rec, YAZ_MARC_LINE, len,
2121                     (const char *) r->u.octet_aligned->buf,
2122                     r->u.octet_aligned->len,
2123                     charset);
2124                 if (ret_buf)
2125                     return ret_buf;
2126             }
2127             return record_iconv_return(rec, len,
2128                                        (const char *) r->u.octet_aligned->buf,
2129                                        r->u.octet_aligned->len,
2130                                        charset);
2131         }
2132         else if (r->which == Z_External_grs1)
2133         {
2134             if (!rec->wrbuf_marc)
2135                 rec->wrbuf_marc = wrbuf_alloc();
2136             wrbuf_rewind(rec->wrbuf_marc);
2137             yaz_display_grs1(rec->wrbuf_marc, r->u.grs1, 0);
2138             return record_iconv_return(rec, len,
2139                                        wrbuf_buf(rec->wrbuf_marc),
2140                                        wrbuf_len(rec->wrbuf_marc),
2141                                        charset);
2142         }
2143         return 0;
2144     }
2145     else if (!strcmp(type, "xml"))
2146     {
2147         Z_External *r = (Z_External *) npr->u.databaseRecord;
2148         const Odr_oid *oid = r->direct_reference;
2149
2150         /* render bibliographic record .. */
2151         if (r->which == Z_External_OPAC)
2152         {
2153             r = r->u.opac->bibliographicRecord;
2154             if (!r)
2155                 return 0;
2156             oid = r->direct_reference;
2157         }
2158
2159         if (r->which == Z_External_sutrs)
2160             return record_iconv_return(rec, len,
2161                                        (const char *) r->u.sutrs->buf,
2162                                        r->u.sutrs->len,
2163                                        charset);
2164         else if (r->which == Z_External_octet)
2165         {
2166             int marc_decode_type = YAZ_MARC_MARCXML;
2167             if (yaz_oid_is_iso2709(oid))
2168             {
2169                 const char *ret_buf = marc_iconv_return(
2170                     rec, marc_decode_type, len,
2171                     (const char *) r->u.octet_aligned->buf,
2172                     r->u.octet_aligned->len,
2173                     charset);
2174                 if (ret_buf)
2175                     return ret_buf;
2176             }
2177             return record_iconv_return(rec, len,
2178                                        (const char *) r->u.octet_aligned->buf,
2179                                        r->u.octet_aligned->len,
2180                                        charset);
2181         }
2182         else if (r->which == Z_External_grs1)
2183         {
2184             if (len) *len = 5;
2185             return "GRS-1";
2186         }
2187         return 0;
2188     }
2189     else if (!strcmp(type, "raw"))
2190     {
2191         Z_External *r = (Z_External *) npr->u.databaseRecord;
2192
2193         if (r->which == Z_External_sutrs)
2194         {
2195             if (len) *len = r->u.sutrs->len;
2196             return (const char *) r->u.sutrs->buf;
2197         }
2198         else if (r->which == Z_External_octet)
2199         {
2200             if (len) *len = r->u.octet_aligned->len;
2201             return (const char *) r->u.octet_aligned->buf;
2202         }
2203         else /* grs-1, explain, OPAC, ... */
2204         {
2205             if (len) *len = -1;
2206             return (const char *) npr->u.databaseRecord;
2207         }
2208         return 0;
2209     }
2210     else if (!strcmp (type, "ext"))
2211     {
2212         if (len) *len = -1;
2213         return (const char *) npr->u.databaseRecord;
2214     }
2215     else if (!strcmp (type, "opac"))
2216
2217     {
2218         Z_External *r = (Z_External *) npr->u.databaseRecord;
2219         if (r->which == Z_External_OPAC)
2220         {
2221             if (!rec->wrbuf_opac)
2222                 rec->wrbuf_opac = wrbuf_alloc();
2223             wrbuf_rewind(rec->wrbuf_opac);
2224             yaz_display_OPAC(rec->wrbuf_opac, r->u.opac, 0);
2225             return record_iconv_return(rec, len,
2226                                        wrbuf_buf(rec->wrbuf_opac),
2227                                        wrbuf_len(rec->wrbuf_opac),
2228                                        charset);
2229         }
2230     }
2231     return 0;
2232 }
2233
2234 static int strcmp_null(const char *v1, const char *v2)
2235 {
2236     if (!v1 && !v2)
2237         return 0;
2238     if (!v1 || !v2)
2239         return -1;
2240     return strcmp(v1, v2);
2241 }
2242
2243 static size_t record_hash(int pos)
2244 {
2245     if (pos < 0)
2246         pos = 0;
2247     return pos % RECORD_HASH_SIZE;
2248 }
2249
2250 static void record_cache_add(ZOOM_resultset r, Z_NamePlusRecord *npr,
2251                              int pos,
2252                              const char *syntax, const char *elementSetName,
2253                              const char *schema,
2254                              Z_SRW_diagnostic *diag)
2255 {
2256     ZOOM_record_cache rc = 0;
2257
2258     ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
2259     ZOOM_connection_put_event(r->connection, event);
2260
2261     for (rc = r->record_hash[record_hash(pos)]; rc; rc = rc->next)
2262     {
2263         if (pos == rc->pos
2264             && strcmp_null(r->schema, rc->schema) == 0
2265             && strcmp_null(elementSetName,rc->elementSetName) == 0
2266             && strcmp_null(syntax, rc->syntax) == 0)
2267             break;
2268     }
2269     if (!rc)
2270     {
2271         rc = (ZOOM_record_cache) odr_malloc(r->odr, sizeof(*rc));
2272         rc->rec.odr = 0;
2273         rc->rec.wrbuf_marc = 0;
2274         rc->rec.wrbuf_iconv = 0;
2275         rc->rec.wrbuf_opac = 0;
2276         rc->elementSetName = odr_strdup_null(r->odr, elementSetName);
2277
2278         rc->syntax = odr_strdup_null(r->odr, syntax);
2279
2280         rc->schema = odr_strdup_null(r->odr, r->schema);
2281
2282         rc->pos = pos;
2283         rc->next = r->record_hash[record_hash(pos)];
2284         r->record_hash[record_hash(pos)] = rc;
2285     }
2286     rc->rec.npr = npr;
2287     rc->rec.schema = odr_strdup_null(r->odr, schema);
2288     rc->rec.diag_set = 0;
2289     rc->rec.diag_uri = 0;
2290     rc->rec.diag_message = 0;
2291     rc->rec.diag_details = 0;
2292     if (diag)
2293     {
2294         if (diag->uri)
2295         {
2296             char *cp;
2297             rc->rec.diag_set = odr_strdup(r->odr, diag->uri);
2298             if ((cp = strrchr(rc->rec.diag_set, '/')))
2299                 *cp = '\0';
2300             rc->rec.diag_uri = odr_strdup(r->odr, diag->uri);
2301         }
2302         rc->rec.diag_message = odr_strdup_null(r->odr, diag->message);
2303         rc->rec.diag_details = odr_strdup_null(r->odr, diag->details);
2304     }
2305 }
2306
2307 static ZOOM_record record_cache_lookup(ZOOM_resultset r, int pos,
2308                                        const char *syntax,
2309                                        const char *elementSetName)
2310 {
2311     ZOOM_record_cache rc;
2312
2313     for (rc = r->record_hash[record_hash(pos)]; rc; rc = rc->next)
2314     {
2315         if (pos == rc->pos)
2316         {
2317             if (strcmp_null(r->schema, rc->schema))
2318                 continue;
2319             if (strcmp_null(elementSetName,rc->elementSetName))
2320                 continue;
2321             if (strcmp_null(syntax, rc->syntax))
2322                 continue;
2323             return &rc->rec;
2324         }
2325     }
2326     return 0;
2327 }
2328
2329 static void handle_records(ZOOM_connection c, Z_Records *sr,
2330                            int present_phase)
2331 {
2332     ZOOM_resultset resultset;
2333     int *start, *count;
2334     const char *syntax = 0, *elementSetName = 0;
2335
2336     if (!c->tasks)
2337         return ;
2338     switch (c->tasks->which)
2339     {
2340     case ZOOM_TASK_SEARCH:
2341         resultset = c->tasks->u.search.resultset;
2342         start = &c->tasks->u.search.start;
2343         count = &c->tasks->u.search.count;
2344         syntax = c->tasks->u.search.syntax;
2345         elementSetName = c->tasks->u.search.elementSetName;
2346         break;
2347     case ZOOM_TASK_RETRIEVE:
2348         resultset = c->tasks->u.retrieve.resultset;
2349         start = &c->tasks->u.retrieve.start;
2350         count = &c->tasks->u.retrieve.count;
2351         syntax = c->tasks->u.retrieve.syntax;
2352         elementSetName = c->tasks->u.retrieve.elementSetName;
2353         break;
2354     default:
2355         return;
2356     }
2357     if (sr && sr->which == Z_Records_NSD)
2358         response_default_diag(c, sr->u.nonSurrogateDiagnostic);
2359     else if (sr && sr->which == Z_Records_multipleNSD)
2360     {
2361         if (sr->u.multipleNonSurDiagnostics->num_diagRecs >= 1)
2362             response_diag(c, sr->u.multipleNonSurDiagnostics->diagRecs[0]);
2363         else
2364             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2365     }
2366     else
2367     {
2368         if (*count + *start > resultset->size)
2369             *count = resultset->size - *start;
2370         if (*count < 0)
2371             *count = 0;
2372         if (sr && sr->which == Z_Records_DBOSD)
2373         {
2374             int i;
2375             NMEM nmem = odr_extract_mem(c->odr_in);
2376             Z_NamePlusRecordList *p =
2377                 sr->u.databaseOrSurDiagnostics;
2378             for (i = 0; i<p->num_records; i++)
2379             {
2380                 record_cache_add(resultset, p->records[i], i + *start,
2381                                  syntax, elementSetName,
2382                                  elementSetName, 0);
2383             }
2384             *count -= i;
2385             if (*count < 0)
2386                 *count = 0;
2387             *start += i;
2388             yaz_log(log_details,
2389                     "handle_records resultset=%p start=%d count=%d",
2390                     resultset, *start, *count);
2391
2392             /* transfer our response to search_nmem .. we need it later */
2393             nmem_transfer(odr_getmem(resultset->odr), nmem);
2394             nmem_destroy(nmem);
2395             if (present_phase && p->num_records == 0)
2396             {
2397                 /* present response and we didn't get any records! */
2398                 Z_NamePlusRecord *myrec =
2399                     zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2400                 record_cache_add(resultset, myrec, *start,
2401                                  syntax, elementSetName, 0, 0);
2402             }
2403         }
2404         else if (present_phase)
2405         {
2406             /* present response and we didn't get any records! */
2407             Z_NamePlusRecord *myrec =
2408                 zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2409             record_cache_add(resultset, myrec, *start, syntax, elementSetName,
2410                              0, 0);
2411         }
2412     }
2413 }
2414
2415 static void handle_present_response(ZOOM_connection c, Z_PresentResponse *pr)
2416 {
2417     handle_records(c, pr->records, 1);
2418 }
2419
2420 static void handle_queryExpressionTerm(ZOOM_options opt, const char *name,
2421                                        Z_Term *term)
2422 {
2423     switch (term->which)
2424     {
2425     case Z_Term_general:
2426         ZOOM_options_setl(opt, name,
2427                           (const char *)(term->u.general->buf),
2428                           term->u.general->len);
2429         break;
2430     case Z_Term_characterString:
2431         ZOOM_options_set(opt, name, term->u.characterString);
2432         break;
2433     case Z_Term_numeric:
2434         ZOOM_options_set_int(opt, name, *term->u.numeric);
2435         break;
2436     }
2437 }
2438
2439 static void handle_queryExpression(ZOOM_options opt, const char *name,
2440                                    Z_QueryExpression *exp)
2441 {
2442     char opt_name[80];
2443
2444     switch (exp->which)
2445     {
2446     case Z_QueryExpression_term:
2447         if (exp->u.term && exp->u.term->queryTerm)
2448         {
2449             sprintf(opt_name, "%s.term", name);
2450             handle_queryExpressionTerm(opt, opt_name, exp->u.term->queryTerm);
2451         }
2452         break;
2453     case Z_QueryExpression_query:
2454         break;
2455     }
2456 }
2457
2458 static void handle_searchResult(ZOOM_connection c, ZOOM_resultset resultset,
2459                                 Z_OtherInformation *o)
2460 {
2461     int i;
2462     for (i = 0; o && i < o->num_elements; i++)
2463     {
2464         if (o->list[i]->which == Z_OtherInfo_externallyDefinedInfo)
2465         {
2466             Z_External *ext = o->list[i]->information.externallyDefinedInfo;
2467
2468             if (ext->which == Z_External_searchResult1)
2469             {
2470                 int j;
2471                 Z_SearchInfoReport *sr = ext->u.searchResult1;
2472
2473                 if (sr->num)
2474                     ZOOM_options_set_int(
2475                         resultset->options, "searchresult.size", sr->num);
2476
2477                 for (j = 0; j < sr->num; j++)
2478                 {
2479                     Z_SearchInfoReport_s *ent =
2480                         ext->u.searchResult1->elements[j];
2481                     char pref[80];
2482
2483                     sprintf(pref, "searchresult.%d", j);
2484
2485                     if (ent->subqueryId)
2486                     {
2487                         char opt_name[80];
2488                         sprintf(opt_name, "%s.id", pref);
2489                         ZOOM_options_set(resultset->options, opt_name,
2490                                          ent->subqueryId);
2491                     }
2492                     if (ent->subqueryExpression)
2493                     {
2494                         char opt_name[80];
2495                         sprintf(opt_name, "%s.subquery", pref);
2496                         handle_queryExpression(resultset->options, opt_name,
2497                                                ent->subqueryExpression);
2498                     }
2499                     if (ent->subqueryInterpretation)
2500                     {
2501                         char opt_name[80];
2502                         sprintf(opt_name, "%s.interpretation", pref);
2503                         handle_queryExpression(resultset->options, opt_name,
2504                                                ent->subqueryInterpretation);
2505                     }
2506                     if (ent->subqueryRecommendation)
2507                     {
2508                         char opt_name[80];
2509                         sprintf(opt_name, "%s.recommendation", pref);
2510                         handle_queryExpression(resultset->options, opt_name,
2511                                                ent->subqueryRecommendation);
2512                     }
2513                     if (ent->subqueryCount)
2514                     {
2515                         char opt_name[80];
2516                         sprintf(opt_name, "%s.count", pref);
2517                         ZOOM_options_set_int(resultset->options, opt_name,
2518                                              *ent->subqueryCount);
2519                     }
2520                 }
2521             }
2522         }
2523     }
2524 }
2525
2526 static void handle_search_response(ZOOM_connection c, Z_SearchResponse *sr)
2527 {
2528     ZOOM_resultset resultset;
2529     ZOOM_Event event;
2530
2531     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
2532         return ;
2533
2534     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
2535     ZOOM_connection_put_event(c, event);
2536
2537     resultset = c->tasks->u.search.resultset;
2538
2539     if (sr->resultSetStatus)
2540     {
2541         ZOOM_options_set_int(resultset->options, "resultSetStatus",
2542                              *sr->resultSetStatus);
2543     }
2544     if (sr->presentStatus)
2545     {
2546         ZOOM_options_set_int(resultset->options, "presentStatus",
2547                              *sr->presentStatus);
2548     }
2549     handle_searchResult(c, resultset, sr->additionalSearchInfo);
2550
2551     resultset->size = *sr->resultCount;
2552     handle_records(c, sr->records, 0);
2553 }
2554
2555 static void sort_response(ZOOM_connection c, Z_SortResponse *res)
2556 {
2557     if (res->diagnostics && res->num_diagnostics > 0)
2558         response_diag(c, res->diagnostics[0]);
2559 }
2560
2561 static int scan_response(ZOOM_connection c, Z_ScanResponse *res)
2562 {
2563     NMEM nmem = odr_extract_mem(c->odr_in);
2564     ZOOM_scanset scan;
2565
2566     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
2567         return 0;
2568     scan = c->tasks->u.scan.scan;
2569
2570     if (res->entries && res->entries->nonsurrogateDiagnostics)
2571         response_diag(c, res->entries->nonsurrogateDiagnostics[0]);
2572     scan->scan_response = res;
2573     scan->srw_scan_response = 0;
2574     nmem_transfer(odr_getmem(scan->odr), nmem);
2575     if (res->stepSize)
2576         ZOOM_options_set_int(scan->options, "stepSize", *res->stepSize);
2577     if (res->positionOfTerm)
2578         ZOOM_options_set_int(scan->options, "position", *res->positionOfTerm);
2579     if (res->scanStatus)
2580         ZOOM_options_set_int(scan->options, "scanStatus", *res->scanStatus);
2581     if (res->numberOfEntriesReturned)
2582         ZOOM_options_set_int(scan->options, "number",
2583                              *res->numberOfEntriesReturned);
2584     nmem_destroy(nmem);
2585     return 1;
2586 }
2587
2588 static zoom_ret send_sort(ZOOM_connection c,
2589                           ZOOM_resultset resultset)
2590 {
2591     if (c->error)
2592         resultset->r_sort_spec = 0;
2593     if (resultset->r_sort_spec)
2594     {
2595         Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_sortRequest);
2596         Z_SortRequest *req = apdu->u.sortRequest;
2597
2598         req->num_inputResultSetNames = 1;
2599         req->inputResultSetNames = (Z_InternationalString **)
2600             odr_malloc(c->odr_out, sizeof(*req->inputResultSetNames));
2601         req->inputResultSetNames[0] =
2602             odr_strdup(c->odr_out, resultset->setname);
2603         req->sortedResultSetName = odr_strdup(c->odr_out, resultset->setname);
2604         req->sortSequence = resultset->r_sort_spec;
2605         resultset->r_sort_spec = 0;
2606         return send_APDU(c, apdu);
2607     }
2608     return zoom_complete;
2609 }
2610
2611 static zoom_ret send_present(ZOOM_connection c)
2612 {
2613     Z_APDU *apdu = 0;
2614     Z_PresentRequest *req = 0;
2615     int i = 0;
2616     const char *syntax = 0;
2617     const char *elementSetName = 0;
2618     ZOOM_resultset  resultset;
2619     int *start, *count;
2620
2621     if (!c->tasks)
2622     {
2623         yaz_log(log_details, "%p send_present no tasks", c);
2624         return zoom_complete;
2625     }
2626
2627     switch (c->tasks->which)
2628     {
2629     case ZOOM_TASK_SEARCH:
2630         resultset = c->tasks->u.search.resultset;
2631         start = &c->tasks->u.search.start;
2632         count = &c->tasks->u.search.count;
2633         syntax = c->tasks->u.search.syntax;
2634         elementSetName = c->tasks->u.search.elementSetName;
2635         break;
2636     case ZOOM_TASK_RETRIEVE:
2637         resultset = c->tasks->u.retrieve.resultset;
2638         start = &c->tasks->u.retrieve.start;
2639         count = &c->tasks->u.retrieve.count;
2640         syntax = c->tasks->u.retrieve.syntax;
2641         elementSetName = c->tasks->u.retrieve.elementSetName;
2642         break;
2643     default:
2644         return zoom_complete;
2645     }
2646     yaz_log(log_details, "%p send_present start=%d count=%d",
2647             c, *start, *count);
2648
2649     if (*start < 0 || *count < 0 || *start + *count > resultset->size)
2650     {
2651         set_dset_error(c, YAZ_BIB1_PRESENT_REQUEST_OUT_OF_RANGE, "Bib-1",
2652                        "", 0);
2653     }
2654     if (c->error)                  /* don't continue on error */
2655         return zoom_complete;
2656     yaz_log(log_details, "send_present resultset=%p start=%d count=%d",
2657             resultset, *start, *count);
2658
2659     for (i = 0; i < *count; i++)
2660     {
2661         ZOOM_record rec =
2662             record_cache_lookup(resultset, i + *start, syntax, elementSetName);
2663         if (!rec)
2664             break;
2665         else
2666         {
2667             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
2668             ZOOM_connection_put_event(c, event);
2669         }
2670     }
2671     *start += i;
2672     *count -= i;
2673
2674     if (*count == 0)
2675     {
2676         yaz_log(log_details, "%p send_present skip=%d no more to fetch", c, i);
2677         return zoom_complete;
2678     }
2679
2680     apdu = zget_APDU(c->odr_out, Z_APDU_presentRequest);
2681     req = apdu->u.presentRequest;
2682
2683     if (i)
2684         yaz_log(log_details, "%p send_present skip=%d", c, i);
2685
2686     *req->resultSetStartPoint = *start + 1;
2687
2688     if (resultset->step > 0 && resultset->step < *count)
2689         *req->numberOfRecordsRequested = resultset->step;
2690     else
2691         *req->numberOfRecordsRequested = *count;
2692
2693     if (*req->numberOfRecordsRequested + *start > resultset->size)
2694         *req->numberOfRecordsRequested = resultset->size - *start;
2695     assert(*req->numberOfRecordsRequested > 0);
2696
2697     if (syntax && *syntax)
2698         req->preferredRecordSyntax =
2699             zoom_yaz_str_to_z3950oid(c, CLASS_RECSYN, syntax);
2700
2701     if (resultset->schema && *resultset->schema)
2702     {
2703         Z_RecordComposition *compo = (Z_RecordComposition *)
2704             odr_malloc(c->odr_out, sizeof(*compo));
2705
2706         req->recordComposition = compo;
2707         compo->which = Z_RecordComp_complex;
2708         compo->u.complex = (Z_CompSpec *)
2709             odr_malloc(c->odr_out, sizeof(*compo->u.complex));
2710         compo->u.complex->selectAlternativeSyntax = (bool_t *)
2711             odr_malloc(c->odr_out, sizeof(bool_t));
2712         *compo->u.complex->selectAlternativeSyntax = 0;
2713
2714         compo->u.complex->generic = (Z_Specification *)
2715             odr_malloc(c->odr_out, sizeof(*compo->u.complex->generic));
2716
2717         compo->u.complex->generic->which = Z_Schema_oid;
2718         compo->u.complex->generic->schema.oid = (Odr_oid *)
2719             zoom_yaz_str_to_z3950oid (c, CLASS_SCHEMA, resultset->schema);
2720
2721         if (!compo->u.complex->generic->schema.oid)
2722         {
2723             /* OID wasn't a schema! Try record syntax instead. */
2724
2725             compo->u.complex->generic->schema.oid = (Odr_oid *)
2726                 zoom_yaz_str_to_z3950oid (c, CLASS_RECSYN, resultset->schema);
2727         }
2728         if (elementSetName && *elementSetName)
2729         {
2730             compo->u.complex->generic->elementSpec = (Z_ElementSpec *)
2731                 odr_malloc(c->odr_out, sizeof(Z_ElementSpec));
2732             compo->u.complex->generic->elementSpec->which =
2733                 Z_ElementSpec_elementSetName;
2734             compo->u.complex->generic->elementSpec->u.elementSetName =
2735                 odr_strdup(c->odr_out, elementSetName);
2736         }
2737         else
2738             compo->u.complex->generic->elementSpec = 0;
2739         compo->u.complex->num_dbSpecific = 0;
2740         compo->u.complex->dbSpecific = 0;
2741         compo->u.complex->num_recordSyntax = 0;
2742         compo->u.complex->recordSyntax = 0;
2743     }
2744     else if (elementSetName && *elementSetName)
2745     {
2746         Z_ElementSetNames *esn = (Z_ElementSetNames *)
2747             odr_malloc(c->odr_out, sizeof(*esn));
2748         Z_RecordComposition *compo = (Z_RecordComposition *)
2749             odr_malloc(c->odr_out, sizeof(*compo));
2750
2751         esn->which = Z_ElementSetNames_generic;
2752         esn->u.generic = odr_strdup(c->odr_out, elementSetName);
2753         compo->which = Z_RecordComp_simple;
2754         compo->u.simple = esn;
2755         req->recordComposition = compo;
2756     }
2757     req->resultSetId = odr_strdup(c->odr_out, resultset->setname);
2758     return send_APDU(c, apdu);
2759 }
2760
2761 ZOOM_API(ZOOM_scanset)
2762     ZOOM_connection_scan(ZOOM_connection c, const char *start)
2763 {
2764     ZOOM_scanset s;
2765     ZOOM_query q = ZOOM_query_create();
2766
2767     ZOOM_query_prefix(q, start);
2768
2769     s = ZOOM_connection_scan1(c, q);
2770     ZOOM_query_destroy(q);
2771     return s;
2772
2773 }
2774
2775 ZOOM_API(ZOOM_scanset)
2776     ZOOM_connection_scan1(ZOOM_connection c, ZOOM_query q)
2777 {
2778     ZOOM_scanset scan = 0;
2779
2780     if (!q->z_query)
2781         return 0;
2782     scan = (ZOOM_scanset) xmalloc(sizeof(*scan));
2783     scan->connection = c;
2784     scan->odr = odr_createmem(ODR_DECODE);
2785     scan->options = ZOOM_options_create_with_parent(c->options);
2786     scan->refcount = 1;
2787     scan->scan_response = 0;
2788     scan->srw_scan_response = 0;
2789
2790     scan->query = q;
2791     (q->refcount)++;
2792     scan->databaseNames = set_DatabaseNames(c, c->options,
2793                                             &scan->num_databaseNames,
2794                                             scan->odr);
2795
2796     if (1)
2797     {
2798         ZOOM_task task = ZOOM_connection_add_task(c, ZOOM_TASK_SCAN);
2799         task->u.scan.scan = scan;
2800
2801         (scan->refcount)++;
2802         if (!c->async)
2803         {
2804             while (ZOOM_event(1, &c))
2805                 ;
2806         }
2807     }
2808     return scan;
2809 }
2810
2811 ZOOM_API(void)
2812     ZOOM_scanset_destroy(ZOOM_scanset scan)
2813 {
2814     if (!scan)
2815         return;
2816     (scan->refcount)--;
2817     if (scan->refcount == 0)
2818     {
2819         ZOOM_query_destroy(scan->query);
2820
2821         odr_destroy(scan->odr);
2822
2823         ZOOM_options_destroy(scan->options);
2824         xfree(scan);
2825     }
2826 }
2827
2828 static zoom_ret send_package(ZOOM_connection c)
2829 {
2830     ZOOM_Event event;
2831
2832     yaz_log(log_details, "%p send_package", c);
2833     if (!c->tasks)
2834         return zoom_complete;
2835     assert (c->tasks->which == ZOOM_TASK_PACKAGE);
2836
2837     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
2838     ZOOM_connection_put_event(c, event);
2839
2840     c->buf_out = c->tasks->u.package->buf_out;
2841     c->len_out = c->tasks->u.package->len_out;
2842
2843     return do_write(c);
2844 }
2845
2846 static zoom_ret ZOOM_connection_send_scan(ZOOM_connection c)
2847 {
2848     ZOOM_scanset scan;
2849     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_scanRequest);
2850     Z_ScanRequest *req = apdu->u.scanRequest;
2851
2852     yaz_log(log_details, "%p send_scan", c);
2853     if (!c->tasks)
2854         return zoom_complete;
2855     assert (c->tasks->which == ZOOM_TASK_SCAN);
2856     scan = c->tasks->u.scan.scan;
2857
2858     /* Z39.50 scan can only carry RPN */
2859     if (scan->query->z_query->which == Z_Query_type_1 ||
2860         scan->query->z_query->which == Z_Query_type_101)
2861     {
2862         Z_RPNQuery *rpn = scan->query->z_query->u.type_1;
2863         const char *cp = ZOOM_options_get(scan->options, "rpnCharset");
2864         if (cp)
2865         {
2866             yaz_iconv_t cd = yaz_iconv_open(cp, "UTF-8");
2867             if (cd)
2868             {
2869                 rpn = yaz_copy_z_RPNQuery(rpn, c->odr_out);
2870
2871                 yaz_query_charset_convert_rpnquery(
2872                     rpn, c->odr_out, cd);
2873                 yaz_iconv_close(cd);
2874             }
2875         }
2876         req->attributeSet = rpn->attributeSetId;
2877         if (!req->attributeSet)
2878             req->attributeSet = odr_oiddup(c->odr_out, yaz_oid_attset_bib_1);
2879         if (rpn->RPNStructure->which == Z_RPNStructure_simple &&
2880             rpn->RPNStructure->u.simple->which == Z_Operand_APT)
2881         {
2882             req->termListAndStartPoint =
2883                 rpn->RPNStructure->u.simple->u.attributesPlusTerm;
2884         }
2885         else
2886         {
2887             set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
2888             return zoom_complete;
2889         }
2890     }
2891     else
2892     {
2893         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
2894         return zoom_complete;
2895     }
2896
2897     *req->numberOfTermsRequested =
2898         ZOOM_options_get_int(scan->options, "number", 10);
2899
2900     req->preferredPositionInResponse =
2901         odr_intdup(c->odr_out,
2902                    ZOOM_options_get_int(scan->options, "position", 1));
2903
2904     req->stepSize =
2905         odr_intdup(c->odr_out,
2906                    ZOOM_options_get_int(scan->options, "stepSize", 0));
2907
2908     req->databaseNames = scan->databaseNames;
2909     req->num_databaseNames = scan->num_databaseNames;
2910
2911     return send_APDU(c, apdu);
2912 }
2913
2914 #if YAZ_HAVE_XML2
2915 static zoom_ret ZOOM_connection_srw_send_scan(ZOOM_connection c)
2916 {
2917     ZOOM_scanset scan;
2918     Z_SRW_PDU *sr = 0;
2919     const char *option_val = 0;
2920
2921     if (!c->tasks)
2922         return zoom_complete;
2923     assert (c->tasks->which == ZOOM_TASK_SCAN);
2924     scan = c->tasks->u.scan.scan;
2925
2926     sr = ZOOM_srw_get_pdu(c, Z_SRW_scan_request);
2927
2928     /* SRU scan can only carry CQL and PQF */
2929     if (scan->query->z_query->which == Z_Query_type_104)
2930     {
2931         sr->u.scan_request->query_type = Z_SRW_query_type_cql;
2932         sr->u.scan_request->scanClause.cql = scan->query->query_string;
2933     }
2934     else if (scan->query->z_query->which == Z_Query_type_1
2935              || scan->query->z_query->which == Z_Query_type_101)
2936     {
2937         sr->u.scan_request->query_type = Z_SRW_query_type_pqf;
2938         sr->u.scan_request->scanClause.pqf = scan->query->query_string;
2939     }
2940     else
2941     {
2942         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
2943         return zoom_complete;
2944     }
2945
2946     sr->u.scan_request->maximumTerms = odr_intdup(
2947         c->odr_out, ZOOM_options_get_int(scan->options, "number", 10));
2948
2949     sr->u.scan_request->responsePosition = odr_intdup(
2950         c->odr_out, ZOOM_options_get_int(scan->options, "position", 1));
2951
2952     option_val = ZOOM_options_get(scan->options, "extraArgs");
2953     yaz_encode_sru_extra(sr, c->odr_out, option_val);
2954     return send_srw(c, sr);
2955 }
2956 #else
2957 static zoom_ret ZOOM_connection_srw_send_scan(ZOOM_connection c)
2958 {
2959     return zoom_complete;
2960 }
2961 #endif
2962
2963
2964 ZOOM_API(size_t)
2965     ZOOM_scanset_size(ZOOM_scanset scan)
2966 {
2967     if (!scan)
2968         return 0;
2969
2970     if (scan->scan_response && scan->scan_response->entries)
2971         return scan->scan_response->entries->num_entries;
2972     else if (scan->srw_scan_response)
2973         return scan->srw_scan_response->num_terms;
2974     return 0;
2975 }
2976
2977 static void ZOOM_scanset_term_x(ZOOM_scanset scan, size_t pos,
2978                                 int *occ,
2979                                 const char **value_term, size_t *value_len,
2980                                 const char **disp_term, size_t *disp_len)
2981 {
2982     size_t noent = ZOOM_scanset_size(scan);
2983
2984     *value_term = 0;
2985     *value_len = 0;
2986
2987     *disp_term = 0;
2988     *disp_len = 0;
2989
2990     *occ = 0;
2991     if (pos >= noent || pos < 0)
2992         return;
2993     if (scan->scan_response)
2994     {
2995         Z_ScanResponse *res = scan->scan_response;
2996         if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2997         {
2998             Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2999
3000             *value_term = (const char *) t->term->u.general->buf;
3001             *value_len = t->term->u.general->len;
3002             if (t->displayTerm)
3003             {
3004                 *disp_term = t->displayTerm;
3005                 *disp_len = strlen(*disp_term);
3006             }
3007             else if (t->term->which == Z_Term_general)
3008             {
3009                 *disp_term = (const char *) t->term->u.general->buf;
3010                 *disp_len = t->term->u.general->len;
3011             }
3012             *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
3013         }
3014     }
3015     if (scan->srw_scan_response)
3016     {
3017         Z_SRW_scanResponse *res = scan->srw_scan_response;
3018         Z_SRW_scanTerm *t = res->terms + pos;
3019         if (t)
3020         {
3021             *value_term = t->value;
3022             *value_len = strlen(*value_term);
3023
3024             if (t->displayTerm)
3025                 *disp_term = t->displayTerm;
3026             else
3027                 *disp_term = t->value;
3028             *disp_len = strlen(*disp_term);
3029             *occ = t->numberOfRecords ? *t->numberOfRecords : 0;
3030         }
3031     }
3032 }
3033
3034 ZOOM_API(const char *)
3035     ZOOM_scanset_term(ZOOM_scanset scan, size_t pos,
3036                       int *occ, int *len)
3037 {
3038     const char *value_term = 0;
3039     size_t value_len = 0;
3040     const char *disp_term = 0;
3041     size_t disp_len = 0;
3042
3043     ZOOM_scanset_term_x(scan, pos, occ, &value_term, &value_len,
3044                         &disp_term, &disp_len);
3045
3046     *len = value_len;
3047     return value_term;
3048 }
3049
3050 ZOOM_API(const char *)
3051     ZOOM_scanset_display_term(ZOOM_scanset scan, size_t pos,
3052                               int *occ, int *len)
3053 {
3054     const char *value_term = 0;
3055     size_t value_len = 0;
3056     const char *disp_term = 0;
3057     size_t disp_len = 0;
3058
3059     ZOOM_scanset_term_x(scan, pos, occ, &value_term, &value_len,
3060                         &disp_term, &disp_len);
3061
3062     *len = disp_len;
3063     return disp_term;
3064 }
3065
3066 ZOOM_API(const char *)
3067     ZOOM_scanset_option_get(ZOOM_scanset scan, const char *key)
3068 {
3069     return ZOOM_options_get(scan->options, key);
3070 }
3071
3072 ZOOM_API(void)
3073     ZOOM_scanset_option_set(ZOOM_scanset scan, const char *key,
3074                             const char *val)
3075 {
3076     ZOOM_options_set(scan->options, key, val);
3077 }
3078
3079 static Z_APDU *create_es_package(ZOOM_package p, const Odr_oid *oid)
3080 {
3081     const char *str;
3082     Z_APDU *apdu = zget_APDU(p->odr_out, Z_APDU_extendedServicesRequest);
3083     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
3084
3085     str = ZOOM_options_get(p->options, "package-name");
3086     if (str && *str)
3087         req->packageName = odr_strdup(p->odr_out, str);
3088
3089     str = ZOOM_options_get(p->options, "user-id");
3090     if (str)
3091         req->userId = odr_strdup_null(p->odr_out, str);
3092
3093     req->packageType = odr_oiddup(p->odr_out, oid);
3094
3095     str = ZOOM_options_get(p->options, "function");
3096     if (str)
3097     {
3098         if (!strcmp (str, "create"))
3099             *req->function = Z_ExtendedServicesRequest_create;
3100         if (!strcmp (str, "delete"))
3101             *req->function = Z_ExtendedServicesRequest_delete;
3102         if (!strcmp (str, "modify"))
3103             *req->function = Z_ExtendedServicesRequest_modify;
3104     }
3105
3106     str = ZOOM_options_get(p->options, "waitAction");
3107     if (str)
3108     {
3109         if (!strcmp (str, "wait"))
3110             *req->waitAction = Z_ExtendedServicesRequest_wait;
3111         if (!strcmp (str, "waitIfPossible"))
3112             *req->waitAction = Z_ExtendedServicesRequest_waitIfPossible;
3113         if (!strcmp (str, "dontWait"))
3114             *req->waitAction = Z_ExtendedServicesRequest_dontWait;
3115         if (!strcmp (str, "dontReturnPackage"))
3116             *req->waitAction = Z_ExtendedServicesRequest_dontReturnPackage;
3117     }
3118     return apdu;
3119 }
3120
3121 static const char *ill_array_lookup(void *clientData, const char *idx)
3122 {
3123     ZOOM_package p = (ZOOM_package) clientData;
3124     return ZOOM_options_get(p->options, idx+4);
3125 }
3126
3127 static Z_External *encode_ill_request(ZOOM_package p)
3128 {
3129     ODR out = p->odr_out;
3130     ILL_Request *req;
3131     Z_External *r = 0;
3132     struct ill_get_ctl ctl;
3133
3134     ctl.odr = p->odr_out;
3135     ctl.clientData = p;
3136     ctl.f = ill_array_lookup;
3137
3138     req = ill_get_ILLRequest(&ctl, "ill", 0);
3139
3140     if (!ill_Request(out, &req, 0, 0))
3141     {
3142         int ill_request_size;
3143         char *ill_request_buf = odr_getbuf(out, &ill_request_size, 0);
3144         if (ill_request_buf)
3145             odr_setbuf(out, ill_request_buf, ill_request_size, 1);
3146         return 0;
3147     }
3148     else
3149     {
3150         int illRequest_size = 0;
3151         char *illRequest_buf = odr_getbuf(out, &illRequest_size, 0);
3152
3153         r = (Z_External *) odr_malloc(out, sizeof(*r));
3154         r->direct_reference = odr_oiddup(out, yaz_oid_general_isoill_1);
3155         r->indirect_reference = 0;
3156         r->descriptor = 0;
3157         r->which = Z_External_single;
3158
3159         r->u.single_ASN1_type =
3160             odr_create_Odr_oct(out,
3161                                (unsigned char *)illRequest_buf,
3162                                illRequest_size);
3163     }
3164     return r;
3165 }
3166
3167 static Z_ItemOrder *encode_item_order(ZOOM_package p)
3168 {
3169     Z_ItemOrder *req = (Z_ItemOrder *) odr_malloc(p->odr_out, sizeof(*req));
3170     const char *str;
3171     int len;
3172
3173     req->which = Z_IOItemOrder_esRequest;
3174     req->u.esRequest = (Z_IORequest *)
3175         odr_malloc(p->odr_out,sizeof(Z_IORequest));
3176
3177     /* to keep part ... */
3178     req->u.esRequest->toKeep = (Z_IOOriginPartToKeep *)
3179         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartToKeep));
3180     req->u.esRequest->toKeep->supplDescription = 0;
3181     req->u.esRequest->toKeep->contact = (Z_IOContact *)
3182         odr_malloc(p->odr_out, sizeof(*req->u.esRequest->toKeep->contact));
3183
3184     str = ZOOM_options_get(p->options, "contact-name");
3185     req->u.esRequest->toKeep->contact->name =
3186         odr_strdup_null(p->odr_out, str);
3187
3188     str = ZOOM_options_get(p->options, "contact-phone");
3189     req->u.esRequest->toKeep->contact->phone =
3190         odr_strdup_null(p->odr_out, str);
3191
3192     str = ZOOM_options_get(p->options, "contact-email");
3193     req->u.esRequest->toKeep->contact->email =
3194         odr_strdup_null(p->odr_out, str);
3195
3196     req->u.esRequest->toKeep->addlBilling = 0;
3197
3198     /* not to keep part ... */
3199     req->u.esRequest->notToKeep = (Z_IOOriginPartNotToKeep *)
3200         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartNotToKeep));
3201
3202     str = ZOOM_options_get(p->options, "itemorder-setname");
3203     if (!str)
3204         str = "default";
3205
3206     if (!*str)
3207         req->u.esRequest->notToKeep->resultSetItem = 0;
3208     else
3209     {
3210         req->u.esRequest->notToKeep->resultSetItem = (Z_IOResultSetItem *)
3211             odr_malloc(p->odr_out, sizeof(Z_IOResultSetItem));
3212
3213         req->u.esRequest->notToKeep->resultSetItem->resultSetId =
3214             odr_strdup(p->odr_out, str);
3215         req->u.esRequest->notToKeep->resultSetItem->item =
3216             (int *) odr_malloc(p->odr_out, sizeof(int));
3217
3218         str = ZOOM_options_get(p->options, "itemorder-item");
3219         *req->u.esRequest->notToKeep->resultSetItem->item =
3220             (str ? atoi(str) : 1);
3221     }
3222
3223     str = ZOOM_options_getl(p->options, "doc", &len);
3224     if (str)
3225     {
3226         req->u.esRequest->notToKeep->itemRequest =
3227             z_ext_record_xml(p->odr_out, str, len);
3228     }
3229     else
3230         req->u.esRequest->notToKeep->itemRequest = encode_ill_request(p);
3231
3232     return req;
3233 }
3234
3235 Z_APDU *create_admin_package(ZOOM_package p, int type,
3236                              Z_ESAdminOriginPartToKeep **toKeepP,
3237                              Z_ESAdminOriginPartNotToKeep **notToKeepP)
3238 {
3239     Z_APDU *apdu = create_es_package(p, yaz_oid_extserv_admin);
3240     if (apdu)
3241     {
3242         Z_ESAdminOriginPartToKeep  *toKeep;
3243         Z_ESAdminOriginPartNotToKeep  *notToKeep;
3244         Z_External *r = (Z_External *) odr_malloc(p->odr_out, sizeof(*r));
3245         const char *first_db = "Default";
3246         int num_db;
3247         char **db = set_DatabaseNames(p->connection, p->options, &num_db,
3248                                       p->odr_out);
3249         if (num_db > 0)
3250             first_db = db[0];
3251
3252         r->direct_reference = odr_oiddup(p->odr_out, yaz_oid_extserv_admin);
3253         r->descriptor = 0;
3254         r->indirect_reference = 0;
3255         r->which = Z_External_ESAdmin;
3256
3257         r->u.adminService = (Z_Admin *)
3258             odr_malloc(p->odr_out, sizeof(*r->u.adminService));
3259         r->u.adminService->which = Z_Admin_esRequest;
3260         r->u.adminService->u.esRequest = (Z_AdminEsRequest *)
3261             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest));
3262
3263         toKeep = r->u.adminService->u.esRequest->toKeep =
3264             (Z_ESAdminOriginPartToKeep *)
3265             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest->toKeep));
3266         toKeep->which = type;
3267         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
3268         toKeep->u.create = odr_nullval();
3269         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3270
3271         r->u.adminService->u.esRequest->notToKeep = notToKeep =
3272             (Z_ESAdminOriginPartNotToKeep *)
3273             odr_malloc(p->odr_out,
3274                        sizeof(*r->u.adminService->u.esRequest->notToKeep));
3275         notToKeep->which = Z_ESAdminOriginPartNotToKeep_recordsWillFollow;
3276         notToKeep->u.recordsWillFollow = odr_nullval();
3277         if (toKeepP)
3278             *toKeepP = toKeep;
3279         if (notToKeepP)
3280             *notToKeepP = notToKeep;
3281     }
3282     return apdu;
3283 }
3284
3285 static Z_APDU *create_xmlupdate_package(ZOOM_package p)
3286 {
3287     Z_APDU *apdu = create_es_package(p, yaz_oid_extserv_xml_es);
3288     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
3289     Z_External *ext = (Z_External *) odr_malloc(p->odr_out, sizeof(*ext));
3290     int len;
3291     const char *doc = ZOOM_options_getl(p->options, "doc", &len);
3292
3293     if (!doc)
3294     {
3295         doc = "";
3296         len = 0;
3297     }
3298
3299     req->taskSpecificParameters = ext;
3300     ext->direct_reference = req->packageType;
3301     ext->descriptor = 0;
3302     ext->indirect_reference = 0;
3303
3304     ext->which = Z_External_octet;
3305     ext->u.single_ASN1_type =
3306         odr_create_Odr_oct(p->odr_out, (const unsigned char *) doc, len);
3307     return apdu;
3308 }
3309
3310 static Z_APDU *create_update_package(ZOOM_package p)
3311 {
3312     Z_APDU *apdu = 0;
3313     const char *first_db = "Default";
3314     int num_db;
3315     char **db = set_DatabaseNames(p->connection, p->options, &num_db, p->odr_out);
3316     const char *action = ZOOM_options_get(p->options, "action");
3317     int recordIdOpaque_len;
3318     const char *recordIdOpaque = ZOOM_options_getl(p->options, "recordIdOpaque",
3319         &recordIdOpaque_len);
3320     const char *recordIdNumber = ZOOM_options_get(p->options, "recordIdNumber");
3321     int record_len;
3322     const char *record_buf = ZOOM_options_getl(p->options, "record",
3323         &record_len);
3324     int recordOpaque_len;
3325     const char *recordOpaque_buf = ZOOM_options_getl(p->options, "recordOpaque",
3326         &recordOpaque_len);
3327     const char *syntax_str = ZOOM_options_get(p->options, "syntax");
3328     const char *version = ZOOM_options_get(p->options, "updateVersion");
3329
3330     const char *correlationInfo_note =
3331         ZOOM_options_get(p->options, "correlationInfo.note");
3332     const char *correlationInfo_id =
3333         ZOOM_options_get(p->options, "correlationInfo.id");
3334     int action_no = -1;
3335     Odr_oid *syntax_oid = 0;
3336     const Odr_oid *package_oid = yaz_oid_extserv_database_update;
3337
3338     if (!version)
3339         version = "3";
3340     if (!syntax_str)
3341         syntax_str = "xml";
3342     if (!record_buf && !recordOpaque_buf)
3343     {
3344         record_buf = "void";
3345         record_len = 4;
3346         syntax_str = "SUTRS";
3347     }
3348
3349     if (syntax_str)
3350     {
3351         syntax_oid = yaz_string_to_oid_odr(yaz_oid_std(),
3352                                            CLASS_RECSYN, syntax_str,
3353                                            p->odr_out);
3354     }
3355     if (!syntax_oid)
3356         return 0;
3357
3358     if (num_db > 0)
3359         first_db = db[0];
3360
3361     switch(*version)
3362     {
3363     case '1':
3364         package_oid = yaz_oid_extserv_database_update_first_version;
3365         /* old update does not support specialUpdate */
3366         if (!action)
3367             action = "recordInsert";
3368         break;
3369     case '2':
3370         if (!action)
3371             action = "specialUpdate";
3372         package_oid = yaz_oid_extserv_database_update_second_version;
3373         break;
3374     case '3':
3375         if (!action)
3376             action = "specialUpdate";
3377         package_oid = yaz_oid_extserv_database_update;
3378         break;
3379     default:
3380         return 0;
3381     }
3382
3383     if (!strcmp(action, "recordInsert"))
3384         action_no = Z_IUOriginPartToKeep_recordInsert;
3385     else if (!strcmp(action, "recordReplace"))
3386         action_no = Z_IUOriginPartToKeep_recordReplace;
3387     else if (!strcmp(action, "recordDelete"))
3388         action_no = Z_IUOriginPartToKeep_recordDelete;
3389     else if (!strcmp(action, "elementUpdate"))
3390         action_no = Z_IUOriginPartToKeep_elementUpdate;
3391     else if (!strcmp(action, "specialUpdate"))
3392         action_no = Z_IUOriginPartToKeep_specialUpdate;
3393     else
3394         return 0;
3395
3396     apdu = create_es_package(p, package_oid);
3397     if (apdu)
3398     {
3399         Z_IUOriginPartToKeep *toKeep;
3400         Z_IUSuppliedRecords *notToKeep;
3401         Z_External *r = (Z_External *)
3402             odr_malloc(p->odr_out, sizeof(*r));
3403         const char *elementSetName =
3404             ZOOM_options_get(p->options, "elementSetName");
3405
3406         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3407
3408         r->direct_reference = odr_oiddup(p->odr_out, package_oid);
3409         r->descriptor = 0;
3410         r->which = Z_External_update;
3411         r->indirect_reference = 0;
3412         r->u.update = (Z_IUUpdate *)
3413             odr_malloc(p->odr_out, sizeof(*r->u.update));
3414
3415         r->u.update->which = Z_IUUpdate_esRequest;
3416         r->u.update->u.esRequest = (Z_IUUpdateEsRequest *)
3417             odr_malloc(p->odr_out, sizeof(*r->u.update->u.esRequest));
3418         toKeep = r->u.update->u.esRequest->toKeep =
3419             (Z_IUOriginPartToKeep *)
3420             odr_malloc(p->odr_out, sizeof(*toKeep));
3421
3422         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
3423         toKeep->schema = 0;
3424
3425         toKeep->elementSetName = odr_strdup_null(p->odr_out, elementSetName);
3426
3427         toKeep->actionQualifier = 0;
3428         toKeep->action = odr_intdup(p->odr_out, action_no);
3429
3430         notToKeep = r->u.update->u.esRequest->notToKeep =
3431             (Z_IUSuppliedRecords *)
3432             odr_malloc(p->odr_out, sizeof(*notToKeep));
3433         notToKeep->num = 1;
3434         notToKeep->elements = (Z_IUSuppliedRecords_elem **)
3435             odr_malloc(p->odr_out, sizeof(*notToKeep->elements));
3436         notToKeep->elements[0] = (Z_IUSuppliedRecords_elem *)
3437             odr_malloc(p->odr_out, sizeof(**notToKeep->elements));
3438         notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_opaque;
3439         if (recordIdOpaque)
3440         {
3441             notToKeep->elements[0]->u.opaque =
3442                 odr_create_Odr_oct(p->odr_out,
3443                                    (const unsigned char *) recordIdOpaque,
3444                                    recordIdOpaque_len);
3445         }
3446         else if (recordIdNumber)
3447         {
3448             notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_number;
3449
3450             notToKeep->elements[0]->u.number =
3451                 odr_intdup(p->odr_out, atoi(recordIdNumber));
3452         }
3453         else
3454             notToKeep->elements[0]->u.opaque = 0;
3455         notToKeep->elements[0]->supplementalId = 0;
3456         if (correlationInfo_note || correlationInfo_id)
3457         {
3458             Z_IUCorrelationInfo *ci;
3459             ci = notToKeep->elements[0]->correlationInfo =
3460                 (Z_IUCorrelationInfo *) odr_malloc(p->odr_out, sizeof(*ci));
3461             ci->note = odr_strdup_null(p->odr_out, correlationInfo_note);
3462             ci->id = correlationInfo_id ?
3463                 odr_intdup(p->odr_out, atoi(correlationInfo_id)) : 0;
3464         }
3465         else
3466             notToKeep->elements[0]->correlationInfo = 0;
3467         if (recordOpaque_buf)
3468         {
3469             notToKeep->elements[0]->record =
3470                 z_ext_record_oid_any(p->odr_out, syntax_oid,
3471                                  recordOpaque_buf, recordOpaque_len);
3472         }
3473         else
3474         {
3475             notToKeep->elements[0]->record =
3476                 z_ext_record_oid(p->odr_out, syntax_oid,
3477                                  record_buf, record_len);
3478         }
3479     }
3480     if (0 && apdu)
3481     {
3482         ODR print = odr_createmem(ODR_PRINT);
3483
3484         z_APDU(print, &apdu, 0, 0);
3485         odr_destroy(print);
3486     }
3487     return apdu;
3488 }
3489
3490 ZOOM_API(void)
3491     ZOOM_package_send(ZOOM_package p, const char *type)
3492 {
3493     Z_APDU *apdu = 0;
3494     ZOOM_connection c;
3495     if (!p)
3496         return;
3497     c = p->connection;
3498     odr_reset(p->odr_out);
3499     xfree(p->buf_out);
3500     p->buf_out = 0;
3501     if (!strcmp(type, "itemorder"))
3502     {
3503         apdu = create_es_package(p, yaz_oid_extserv_item_order);
3504         if (apdu)
3505         {
3506             Z_External *r = (Z_External *) odr_malloc(p->odr_out, sizeof(*r));
3507
3508             r->direct_reference =
3509                 odr_oiddup(p->odr_out, yaz_oid_extserv_item_order);
3510             r->descriptor = 0;
3511             r->which = Z_External_itemOrder;
3512             r->indirect_reference = 0;
3513             r->u.itemOrder = encode_item_order(p);
3514
3515             apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3516         }
3517     }
3518     else if (!strcmp(type, "create"))  /* create database */
3519     {
3520         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_create,
3521                                     0, 0);
3522     }
3523     else if (!strcmp(type, "drop"))  /* drop database */
3524     {
3525         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_drop,
3526                                     0, 0);
3527     }
3528     else if (!strcmp(type, "commit"))  /* commit changes */
3529     {
3530         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_commit,
3531                                     0, 0);
3532     }
3533     else if (!strcmp(type, "update")) /* update record(s) */
3534     {
3535         apdu = create_update_package(p);
3536     }
3537     else if (!strcmp(type, "xmlupdate"))
3538     {
3539         apdu = create_xmlupdate_package(p);
3540     }
3541     if (apdu)
3542     {
3543         if (encode_APDU(p->connection, apdu, p->odr_out) == 0)
3544         {
3545             char *buf;
3546
3547             ZOOM_task task = ZOOM_connection_add_task(c, ZOOM_TASK_PACKAGE);
3548             task->u.package = p;
3549             buf = odr_getbuf(p->odr_out, &p->len_out, 0);
3550             p->buf_out = (char *) xmalloc(p->len_out);
3551             memcpy(p->buf_out, buf, p->len_out);
3552
3553             (p->refcount)++;
3554             if (!c->async)
3555             {
3556                 while (ZOOM_event(1, &c))
3557                     ;
3558             }
3559         }
3560     }
3561 }
3562
3563 ZOOM_API(ZOOM_package)
3564     ZOOM_connection_package(ZOOM_connection c, ZOOM_options options)
3565 {
3566     ZOOM_package p = (ZOOM_package) xmalloc(sizeof(*p));
3567
3568     p->connection = c;
3569     p->odr_out = odr_createmem(ODR_ENCODE);
3570     p->options = ZOOM_options_create_with_parent2(options, c->options);
3571     p->refcount = 1;
3572     p->buf_out = 0;
3573     p->len_out = 0;
3574     return p;
3575 }
3576
3577 ZOOM_API(void)
3578     ZOOM_package_destroy(ZOOM_package p)
3579 {
3580     if (!p)
3581         return;
3582     (p->refcount)--;
3583     if (p->refcount == 0)
3584     {
3585         odr_destroy(p->odr_out);
3586         xfree(p->buf_out);
3587
3588         ZOOM_options_destroy(p->options);
3589         xfree(p);
3590     }
3591 }
3592
3593 ZOOM_API(const char *)
3594     ZOOM_package_option_get(ZOOM_package p, const char *key)
3595 {
3596     return ZOOM_options_get(p->options, key);
3597 }
3598
3599 ZOOM_API(const char *)
3600     ZOOM_package_option_getl(ZOOM_package p, const char *key, int *lenp)
3601 {
3602     return ZOOM_options_getl(p->options, key, lenp);
3603 }
3604
3605 ZOOM_API(void)
3606     ZOOM_package_option_set(ZOOM_package p, const char *key,
3607                             const char *val)
3608 {
3609     ZOOM_options_set(p->options, key, val);
3610 }
3611
3612 ZOOM_API(void)
3613     ZOOM_package_option_setl(ZOOM_package p, const char *key,
3614                              const char *val, int len)
3615 {
3616     ZOOM_options_setl(p->options, key, val, len);
3617 }
3618
3619 static int ZOOM_connection_exec_task(ZOOM_connection c)
3620 {
3621     ZOOM_task task = c->tasks;
3622     zoom_ret ret = zoom_complete;
3623
3624     if (!task)
3625         return 0;
3626     yaz_log(log_details, "%p ZOOM_connection_exec_task type=%d run=%d",
3627             c, task->which, task->running);
3628     if (c->error != ZOOM_ERROR_NONE)
3629     {
3630         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3631                 "removing tasks because of error = %d", c, c->error);
3632         ZOOM_connection_remove_tasks(c);
3633         return 0;
3634     }
3635     if (task->running)
3636     {
3637         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3638                 "task already running", c);
3639         return 0;
3640     }
3641     task->running = 1;
3642     ret = zoom_complete;
3643     if (c->cs || task->which == ZOOM_TASK_CONNECT)
3644     {
3645         switch (task->which)
3646         {
3647         case ZOOM_TASK_SEARCH:
3648             if (c->proto == PROTO_HTTP)
3649                 ret = ZOOM_connection_srw_send_search(c);
3650             else
3651                 ret = ZOOM_connection_send_search(c);
3652             break;
3653         case ZOOM_TASK_RETRIEVE:
3654             if (c->proto == PROTO_HTTP)
3655                 ret = ZOOM_connection_srw_send_search(c);
3656             else
3657                 ret = send_present(c);
3658             break;
3659         case ZOOM_TASK_CONNECT:
3660             ret = do_connect(c);
3661             break;
3662         case ZOOM_TASK_SCAN:
3663             if (c->proto == PROTO_HTTP)
3664                 ret = ZOOM_connection_srw_send_scan(c);
3665             else
3666                 ret = ZOOM_connection_send_scan(c);
3667             break;
3668         case ZOOM_TASK_PACKAGE:
3669             ret = send_package(c);
3670             break;
3671         case ZOOM_TASK_SORT:
3672             c->tasks->u.sort.resultset->r_sort_spec =
3673                 c->tasks->u.sort.q->sort_spec;
3674             ret = send_sort(c, c->tasks->u.sort.resultset);
3675             break;
3676         }
3677     }
3678     else
3679     {
3680         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3681                 "remove tasks because no connection exist", c);
3682         ZOOM_connection_remove_tasks(c);
3683     }
3684     if (ret == zoom_complete)
3685     {
3686         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3687                 "task removed (complete)", c);
3688         ZOOM_connection_remove_task(c);
3689         return 0;
3690     }
3691     yaz_log(log_details, "%p ZOOM_connection_exec_task "
3692             "task pending", c);
3693     return 1;
3694 }
3695
3696 static zoom_ret send_sort_present(ZOOM_connection c)
3697 {
3698     zoom_ret r = zoom_complete;
3699
3700     if (c->tasks && c->tasks->which == ZOOM_TASK_SEARCH)
3701         r = send_sort(c, c->tasks->u.search.resultset);
3702     if (r == zoom_complete)
3703         r = send_present(c);
3704     return r;
3705 }
3706
3707 static int es_response_taskpackage_update(ZOOM_connection c,
3708                 Z_IUUpdateTaskPackage *utp)
3709 {
3710         if (utp && utp->targetPart)
3711         {
3712                 Z_IUTargetPart *targetPart = utp->targetPart;
3713                 switch ( *targetPart->updateStatus ) {
3714                         case Z_IUTargetPart_success:
3715                                 ZOOM_options_set(c->tasks->u.package->options,"updateStatus", "success");
3716                                 break;
3717                         case Z_IUTargetPart_partial:
3718                                 ZOOM_options_set(c->tasks->u.package->options,"updateStatus", "partial");
3719                                 break;
3720                         case Z_IUTargetPart_failure:
3721                                 ZOOM_options_set(c->tasks->u.package->options,"updateStatus", "failure");
3722                                 if (targetPart->globalDiagnostics && targetPart->num_globalDiagnostics > 0)
3723                                         response_diag(c, targetPart->globalDiagnostics[0]);
3724                                 break;
3725                 }
3726                 // NOTE: Individual record status, surrogate diagnostics, and supplemental diagnostics ARE NOT REPORTED.
3727         }
3728     return 1;
3729 }
3730
3731 static int es_response_taskpackage(ZOOM_connection c,
3732                                    Z_TaskPackage *taskPackage)
3733 {
3734         // targetReference
3735         Odr_oct *id = taskPackage->targetReference;
3736         if (id)
3737                 ZOOM_options_setl(c->tasks->u.package->options,
3738                                                         "targetReference", (char*) id->buf, id->len);
3739
3740         // taskStatus
3741         switch ( *taskPackage->taskStatus ) {
3742                 case Z_TaskPackage_pending:
3743                         ZOOM_options_set(c->tasks->u.package->options,"taskStatus", "pending");
3744                         break;
3745                 case Z_TaskPackage_active:
3746                         ZOOM_options_set(c->tasks->u.package->options,"taskStatus", "active");
3747                         break;
3748                 case Z_TaskPackage_complete:
3749                         ZOOM_options_set(c->tasks->u.package->options,"taskStatus", "complete");
3750                         break;
3751                 case Z_TaskPackage_aborted:
3752                         ZOOM_options_set(c->tasks->u.package->options,"taskStatus", "aborted");
3753                         if ( taskPackage->num_packageDiagnostics && taskPackage->packageDiagnostics )
3754                                 response_diag(c, taskPackage->packageDiagnostics[0]);
3755                         break;
3756         }
3757
3758         // taskSpecificParameters
3759         // NOTE: Only Update implemented, no others.
3760         if ( taskPackage->taskSpecificParameters->which == Z_External_update ) {
3761                         Z_IUUpdateTaskPackage *utp = taskPackage->taskSpecificParameters->u.update->u.taskPackage;
3762                         es_response_taskpackage_update(c, utp);
3763         }
3764         return 1;
3765 }
3766
3767
3768 static int es_response(ZOOM_connection c,
3769                        Z_ExtendedServicesResponse *res)
3770 {
3771     if (!c->tasks || c->tasks->which != ZOOM_TASK_PACKAGE)
3772         return 0;
3773     switch (*res->operationStatus) {
3774         case Z_ExtendedServicesResponse_done:
3775             ZOOM_options_set(c->tasks->u.package->options,"operationStatus", "done");
3776             break;
3777         case Z_ExtendedServicesResponse_accepted:
3778             ZOOM_options_set(c->tasks->u.package->options,"operationStatus", "accepted");
3779             break;
3780         case Z_ExtendedServicesResponse_failure:
3781             ZOOM_options_set(c->tasks->u.package->options,"operationStatus", "failure");
3782             if (res->diagnostics && res->num_diagnostics > 0)
3783                 response_diag(c, res->diagnostics[0]);
3784             break;
3785     }
3786     if (res->taskPackage &&
3787         res->taskPackage->which == Z_External_extendedService)
3788     {
3789         Z_TaskPackage *taskPackage = res->taskPackage->u.extendedService;
3790         es_response_taskpackage(c, taskPackage);
3791     }
3792     if (res->taskPackage &&
3793         res->taskPackage->which == Z_External_octet)
3794     {
3795         Odr_oct *doc = res->taskPackage->u.octet_aligned;
3796         ZOOM_options_setl(c->tasks->u.package->options,
3797                           "xmlUpdateDoc", (char*) doc->buf, doc->len);
3798     }
3799     return 1;
3800 }
3801
3802 static void interpret_init_diag(ZOOM_connection c,
3803                                 Z_DiagnosticFormat *diag)
3804 {
3805     if (diag->num > 0)
3806     {
3807         Z_DiagnosticFormat_s *ds = diag->elements[0];
3808         if (ds->which == Z_DiagnosticFormat_s_defaultDiagRec)
3809             response_default_diag(c, ds->u.defaultDiagRec);
3810     }
3811 }
3812
3813
3814 static void interpret_otherinformation_field(ZOOM_connection c,
3815                                              Z_OtherInformation *ui)
3816 {
3817     int i;
3818     for (i = 0; i < ui->num_elements; i++)
3819     {
3820         Z_OtherInformationUnit *unit = ui->list[i];
3821         if (unit->which == Z_OtherInfo_externallyDefinedInfo &&
3822             unit->information.externallyDefinedInfo &&
3823             unit->information.externallyDefinedInfo->which ==
3824             Z_External_diag1)
3825         {
3826             interpret_init_diag(c, unit->information.externallyDefinedInfo->u.diag1);
3827         }
3828     }
3829 }
3830
3831
3832 static void set_init_option(const char *name, void *clientData) {
3833     ZOOM_connection c = (ZOOM_connection) clientData;
3834     char buf[80];
3835
3836     sprintf(buf, "init_opt_%.70s", name);
3837     ZOOM_connection_option_set(c, buf, "1");
3838 }
3839
3840
3841 static void recv_apdu(ZOOM_connection c, Z_APDU *apdu)
3842 {
3843     Z_InitResponse *initrs;
3844
3845     ZOOM_connection_set_mask(c, 0);
3846     yaz_log(log_details, "%p recv_apdu apdu->which=%d", c, apdu->which);
3847     switch(apdu->which)
3848     {
3849     case Z_APDU_initResponse:
3850         yaz_log(log_api, "%p recv_apdu: Received Init response", c);
3851         initrs = apdu->u.initResponse;
3852         ZOOM_connection_option_set(c, "serverImplementationId",
3853                                    initrs->implementationId ?
3854                                    initrs->implementationId : "");
3855         ZOOM_connection_option_set(c, "serverImplementationName",
3856                                    initrs->implementationName ?
3857                                    initrs->implementationName : "");
3858         ZOOM_connection_option_set(c, "serverImplementationVersion",
3859                                    initrs->implementationVersion ?
3860                                    initrs->implementationVersion : "");
3861         /* Set the three old options too, for old applications */
3862         ZOOM_connection_option_set(c, "targetImplementationId",
3863                                    initrs->implementationId ?
3864                                    initrs->implementationId : "");
3865         ZOOM_connection_option_set(c, "targetImplementationName",
3866                                    initrs->implementationName ?
3867                                    initrs->implementationName : "");
3868         ZOOM_connection_option_set(c, "targetImplementationVersion",
3869                                    initrs->implementationVersion ?
3870                                    initrs->implementationVersion : "");
3871
3872         /* Make initrs->options available as ZOOM-level options */
3873         yaz_init_opt_decode(initrs->options, set_init_option, (void*) c);
3874
3875         if (!*initrs->result)
3876         {
3877             Z_External *uif = initrs->userInformationField;
3878
3879             set_ZOOM_error(c, ZOOM_ERROR_INIT, 0); /* default error */
3880
3881             if (uif && uif->which == Z_External_userInfo1)
3882                 interpret_otherinformation_field(c, uif->u.userInfo1);
3883         }
3884         else
3885         {
3886             char *cookie =
3887                 yaz_oi_get_string_oid(&apdu->u.initResponse->otherInfo,
3888                                       yaz_oid_userinfo_cookie, 1, 0);
3889             xfree(c->cookie_in);
3890             c->cookie_in = 0;
3891             if (cookie)
3892                 c->cookie_in = xstrdup(cookie);
3893             if (ODR_MASK_GET(initrs->options, Z_Options_namedResultSets) &&
3894                 ODR_MASK_GET(initrs->protocolVersion, Z_ProtocolVersion_3))
3895                 c->support_named_resultsets = 1;
3896             if (c->tasks)
3897             {
3898                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
3899                 ZOOM_connection_remove_task(c);
3900             }
3901             ZOOM_connection_exec_task(c);
3902         }
3903         if (ODR_MASK_GET(initrs->options, Z_Options_negotiationModel))
3904         {
3905             NMEM tmpmem = nmem_create();
3906             Z_CharSetandLanguageNegotiation *p =
3907                 yaz_get_charneg_record(initrs->otherInfo);
3908
3909             if (p)
3910             {
3911                 char *charset = NULL, *lang = NULL;
3912                 int sel;
3913
3914                 yaz_get_response_charneg(tmpmem, p, &charset, &lang, &sel);
3915                 yaz_log(log_details, "%p recv_apdu target accepted: "
3916                         "charset %s, language %s, select %d",
3917                         c,
3918                         charset ? charset : "none", lang ? lang : "none", sel);
3919                 if (charset)
3920                     ZOOM_connection_option_set(c, "negotiation-charset",
3921                                                charset);
3922                 if (lang)
3923                     ZOOM_connection_option_set(c, "negotiation-lang",
3924                                                lang);
3925
3926                 ZOOM_connection_option_set(
3927                     c,  "negotiation-charset-in-effect-for-records",
3928                     (sel != 0) ? "1" : "0");
3929                 nmem_destroy(tmpmem);
3930             }
3931         }
3932         break;
3933     case Z_APDU_searchResponse:
3934         yaz_log(log_api, "%p recv_apdu Search response", c);
3935         handle_search_response(c, apdu->u.searchResponse);
3936         if (send_sort_present(c) == zoom_complete)
3937             ZOOM_connection_remove_task(c);
3938         break;
3939     case Z_APDU_presentResponse:
3940         yaz_log(log_api, "%p recv_apdu Present response", c);
3941         handle_present_response(c, apdu->u.presentResponse);
3942         if (send_present(c) == zoom_complete)
3943             ZOOM_connection_remove_task(c);
3944         break;
3945     case Z_APDU_sortResponse:
3946         yaz_log(log_api, "%p recv_apdu Sort response", c);
3947         sort_response(c, apdu->u.sortResponse);
3948         if (send_present(c) == zoom_complete)
3949             ZOOM_connection_remove_task(c);
3950         break;
3951     case Z_APDU_scanResponse:
3952         yaz_log(log_api, "%p recv_apdu Scan response", c);
3953         scan_response(c, apdu->u.scanResponse);
3954         ZOOM_connection_remove_task(c);
3955         break;
3956     case Z_APDU_extendedServicesResponse:
3957         yaz_log(log_api, "%p recv_apdu Extended Services response", c);
3958         es_response(c, apdu->u.extendedServicesResponse);
3959         ZOOM_connection_remove_task(c);
3960         break;
3961     case Z_APDU_close:
3962         yaz_log(log_api, "%p recv_apdu Close PDU", c);
3963         if (!ZOOM_test_reconnect(c))
3964         {
3965             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3966             do_close(c);
3967         }
3968         break;
3969     default:
3970         yaz_log(log_api, "%p Received unknown PDU", c);
3971         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3972         do_close(c);
3973     }
3974 }
3975
3976 #if YAZ_HAVE_XML2
3977 static zoom_ret handle_srw_response(ZOOM_connection c,
3978                                     Z_SRW_searchRetrieveResponse *res)
3979 {
3980     ZOOM_resultset resultset = 0;
3981     int i;
3982     NMEM nmem;
3983     ZOOM_Event event;
3984     int *start, *count;
3985     const char *syntax, *elementSetName;
3986
3987     if (!c->tasks)
3988         return zoom_complete;
3989
3990     switch(c->tasks->which)
3991     {
3992     case ZOOM_TASK_SEARCH:
3993         resultset = c->tasks->u.search.resultset;
3994         start = &c->tasks->u.search.start;
3995         count = &c->tasks->u.search.count;
3996         syntax = c->tasks->u.search.syntax;
3997         elementSetName = c->tasks->u.search.elementSetName;
3998
3999         if (!c->tasks->u.search.recv_search_fired)
4000         {
4001             event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
4002             ZOOM_connection_put_event(c, event);
4003             c->tasks->u.search.recv_search_fired = 1;
4004         }
4005         break;
4006     case ZOOM_TASK_RETRIEVE:
4007         resultset = c->tasks->u.retrieve.resultset;
4008         start = &c->tasks->u.retrieve.start;
4009         count = &c->tasks->u.retrieve.count;
4010         syntax = c->tasks->u.retrieve.syntax;
4011         elementSetName = c->tasks->u.retrieve.elementSetName;
4012         break;
4013     default:
4014         return zoom_complete;
4015     }
4016
4017     resultset->size = 0;
4018
4019     if (res->resultSetId)
4020         ZOOM_resultset_option_set(resultset, "resultSetId", res->resultSetId);
4021
4022     yaz_log(log_details, "%p handle_srw_response got SRW response OK", c);
4023
4024     if (res->num_diagnostics > 0)
4025     {
4026         set_SRU_error(c, &res->diagnostics[0]);
4027     }
4028     else
4029     {
4030         if (res->numberOfRecords)
4031             resultset->size = *res->numberOfRecords;
4032         for (i = 0; i<res->num_records; i++)
4033         {
4034             int pos;
4035             Z_SRW_record *sru_rec;
4036             Z_SRW_diagnostic *diag = 0;
4037             int num_diag;
4038
4039             Z_NamePlusRecord *npr = (Z_NamePlusRecord *)
4040                 odr_malloc(c->odr_in, sizeof(Z_NamePlusRecord));
4041
4042             if (res->records[i].recordPosition &&
4043                 *res->records[i].recordPosition > 0)
4044                 pos = *res->records[i].recordPosition - 1;
4045             else
4046                 pos = *start + i;
4047
4048             sru_rec = &res->records[i];
4049
4050             npr->databaseName = 0;
4051             npr->which = Z_NamePlusRecord_databaseRecord;
4052             npr->u.databaseRecord = (Z_External *)
4053                 odr_malloc(c->odr_in, sizeof(Z_External));
4054             npr->u.databaseRecord->descriptor = 0;
4055             npr->u.databaseRecord->direct_reference =
4056                 odr_oiddup(c->odr_in, yaz_oid_recsyn_xml);
4057             npr->u.databaseRecord->which = Z_External_octet;
4058
4059             npr->u.databaseRecord->u.octet_aligned = (Odr_oct *)
4060                 odr_malloc(c->odr_in, sizeof(Odr_oct));
4061             npr->u.databaseRecord->u.octet_aligned->buf = (unsigned char*)
4062                 sru_rec->recordData_buf;
4063             npr->u.databaseRecord->u.octet_aligned->len =
4064                 npr->u.databaseRecord->u.octet_aligned->size =
4065                 sru_rec->recordData_len;
4066
4067             if (sru_rec->recordSchema
4068                 && !strcmp(sru_rec->recordSchema,
4069                            "info:srw/schema/1/diagnostics-v1.1"))
4070             {
4071                 sru_decode_surrogate_diagnostics(sru_rec->recordData_buf,
4072                                                  sru_rec->recordData_len,
4073                                                  &diag, &num_diag,
4074                                                  resultset->odr);
4075             }
4076             record_cache_add(resultset, npr, pos, syntax, elementSetName,
4077                              sru_rec->recordSchema, diag);
4078         }
4079         *count -= i;
4080         *start += i;
4081         if (*count + *start > resultset->size)
4082             *count = resultset->size - *start;
4083         if (*count < 0)
4084             *count = 0;
4085
4086         nmem = odr_extract_mem(c->odr_in);
4087         nmem_transfer(odr_getmem(resultset->odr), nmem);
4088         nmem_destroy(nmem);
4089
4090         if (*count > 0)
4091             return ZOOM_connection_srw_send_search(c);
4092     }
4093     return zoom_complete;
4094 }
4095 #endif
4096
4097 #if YAZ_HAVE_XML2
4098 static void handle_srw_scan_response(ZOOM_connection c,
4099                                      Z_SRW_scanResponse *res)
4100 {
4101     NMEM nmem = odr_extract_mem(c->odr_in);
4102     ZOOM_scanset scan;
4103
4104     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
4105         return;
4106     scan = c->tasks->u.scan.scan;
4107
4108     if (res->num_diagnostics > 0)
4109         set_SRU_error(c, &res->diagnostics[0]);
4110
4111     scan->scan_response = 0;
4112     scan->srw_scan_response = res;
4113     nmem_transfer(odr_getmem(scan->odr), nmem);
4114
4115     ZOOM_options_set_int(scan->options, "number", res->num_terms);
4116     nmem_destroy(nmem);
4117 }
4118 #endif
4119
4120 #if YAZ_HAVE_XML2
4121 static void handle_http(ZOOM_connection c, Z_HTTP_Response *hres)
4122 {
4123     zoom_ret cret = zoom_complete;
4124     int ret = -1;
4125     const char *addinfo = 0;
4126     const char *connection_head = z_HTTP_header_lookup(hres->headers,
4127                                                        "Connection");
4128     ZOOM_connection_set_mask(c, 0);
4129     yaz_log(log_details, "%p handle_http", c);
4130
4131     if (!yaz_srw_check_content_type(hres))
4132         addinfo = "content-type";
4133     else
4134     {
4135         Z_SOAP *soap_package = 0;
4136         ODR o = c->odr_in;
4137         Z_SOAP_Handler soap_handlers[2] = {
4138             {YAZ_XMLNS_SRU_v1_1, 0, (Z_SOAP_fun) yaz_srw_codec},
4139             {0, 0, 0}
4140         };
4141         ret = z_soap_codec(o, &soap_package,
4142                            &hres->content_buf, &hres->content_len,
4143                            soap_handlers);
4144         if (!ret && soap_package->which == Z_SOAP_generic &&
4145             soap_package->u.generic->no == 0)
4146         {
4147             Z_SRW_PDU *sr = (Z_SRW_PDU*) soap_package->u.generic->p;
4148
4149             ZOOM_options_set(c->options, "sru_version", sr->srw_version);
4150             if (sr->which == Z_SRW_searchRetrieve_response)
4151                 cret = handle_srw_response(c, sr->u.response);
4152             else if (sr->which == Z_SRW_scan_response)
4153                 handle_srw_scan_response(c, sr->u.scan_response);
4154             else
4155                 ret = -1;
4156         }
4157         else if (!ret && (soap_package->which == Z_SOAP_fault
4158                           || soap_package->which == Z_SOAP_error))
4159         {
4160             set_HTTP_error(c, hres->code,
4161                            soap_package->u.fault->fault_code,
4162                            soap_package->u.fault->fault_string);
4163         }
4164         else
4165             ret = -1;
4166     }
4167     if (ret)
4168     {
4169         if (hres->code != 200)
4170             set_HTTP_error(c, hres->code, 0, 0);
4171         else
4172             set_ZOOM_error(c, ZOOM_ERROR_DECODE, addinfo);
4173         do_close(c);
4174     }
4175     if (cret == zoom_complete)
4176         ZOOM_connection_remove_task(c);
4177     if (!strcmp(hres->version, "1.0"))
4178     {
4179         /* HTTP 1.0: only if Keep-Alive we stay alive.. */
4180         if (!connection_head || strcmp(connection_head, "Keep-Alive"))
4181             do_close(c);
4182     }
4183     else
4184     {
4185         /* HTTP 1.1: only if no close we stay alive .. */
4186         if (connection_head && !strcmp(connection_head, "close"))
4187             do_close(c);
4188     }
4189 }
4190 #endif
4191
4192 static int do_read(ZOOM_connection c)
4193 {
4194     int r, more;
4195     ZOOM_Event event;
4196
4197     event = ZOOM_Event_create(ZOOM_EVENT_RECV_DATA);
4198     ZOOM_connection_put_event(c, event);
4199
4200     r = cs_get(c->cs, &c->buf_in, &c->len_in);
4201     more = cs_more(c->cs);
4202     yaz_log(log_details, "%p do_read len=%d more=%d", c, r, more);
4203     if (r == 1)
4204         return 0;
4205     if (r <= 0)
4206     {
4207         if (!ZOOM_test_reconnect(c))
4208         {
4209             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
4210             do_close(c);
4211         }
4212     }
4213     else
4214     {
4215         Z_GDU *gdu;
4216         ZOOM_Event event;
4217
4218         odr_reset(c->odr_in);
4219         odr_setbuf(c->odr_in, c->buf_in, r, 0);
4220         event = ZOOM_Event_create(ZOOM_EVENT_RECV_APDU);
4221         ZOOM_connection_put_event(c, event);
4222
4223         if (!z_GDU(c->odr_in, &gdu, 0, 0))
4224         {
4225             int x;
4226             int err = odr_geterrorx(c->odr_in, &x);
4227             char msg[100];
4228             const char *element = odr_getelement(c->odr_in);
4229             yaz_snprintf(msg, sizeof(msg),
4230                     "ODR code %d:%d element=%s offset=%d",
4231                     err, x, element ? element : "<unknown>",
4232                     odr_offset(c->odr_in));
4233             set_ZOOM_error(c, ZOOM_ERROR_DECODE, msg);
4234             if (log_api)
4235             {
4236                 FILE *ber_file = yaz_log_file();
4237                 if (ber_file)
4238                     odr_dumpBER(ber_file, c->buf_in, r);
4239             }
4240             do_close(c);
4241         }
4242         else
4243         {
4244             if (c->odr_print)
4245                 z_GDU(c->odr_print, &gdu, 0, 0);
4246             if (gdu->which == Z_GDU_Z3950)
4247                 recv_apdu(c, gdu->u.z3950);
4248             else if (gdu->which == Z_GDU_HTTP_Response)
4249             {
4250 #if YAZ_HAVE_XML2
4251                 handle_http(c, gdu->u.HTTP_Response);
4252 #else
4253                 set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
4254                 do_close(c);
4255 #endif
4256             }
4257         }
4258         c->reconnect_ok = 0;
4259     }
4260     return 1;
4261 }
4262
4263 static zoom_ret do_write_ex(ZOOM_connection c, char *buf_out, int len_out)
4264 {
4265     int r;
4266     ZOOM_Event event;
4267
4268     event = ZOOM_Event_create(ZOOM_EVENT_SEND_DATA);
4269     ZOOM_connection_put_event(c, event);
4270
4271     yaz_log(log_details, "%p do_write_ex len=%d", c, len_out);
4272     if ((r = cs_put(c->cs, buf_out, len_out)) < 0)
4273     {
4274         yaz_log(log_details, "%p do_write_ex write failed", c);
4275         if (ZOOM_test_reconnect(c))
4276         {
4277             return zoom_pending;
4278         }
4279         if (c->state == STATE_CONNECTING)
4280             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
4281         else
4282             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
4283         do_close(c);
4284         return zoom_complete;
4285     }
4286     else if (r == 1)
4287     {
4288         int mask = ZOOM_SELECT_EXCEPT;
4289         if (c->cs->io_pending & CS_WANT_WRITE)
4290             mask += ZOOM_SELECT_WRITE;
4291         if (c->cs->io_pending & CS_WANT_READ)
4292             mask += ZOOM_SELECT_READ;
4293         ZOOM_connection_set_mask(c, mask);
4294         yaz_log(log_details, "%p do_write_ex write incomplete mask=%d",
4295                 c, c->mask);
4296     }
4297     else
4298     {
4299         ZOOM_connection_set_mask(c, ZOOM_SELECT_READ|ZOOM_SELECT_EXCEPT);
4300         yaz_log(log_details, "%p do_write_ex write complete mask=%d",
4301                 c, c->mask);
4302     }
4303     return zoom_pending;
4304 }
4305
4306 static zoom_ret do_write(ZOOM_connection c)
4307 {
4308     return do_write_ex(c, c->buf_out, c->len_out);
4309 }
4310
4311
4312 ZOOM_API(const char *)
4313     ZOOM_connection_option_get(ZOOM_connection c, const char *key)
4314 {
4315     return ZOOM_options_get(c->options, key);
4316 }
4317
4318 ZOOM_API(const char *)
4319     ZOOM_connection_option_getl(ZOOM_connection c, const char *key, int *lenp)
4320 {
4321     return ZOOM_options_getl(c->options, key, lenp);
4322 }
4323
4324 ZOOM_API(void)
4325     ZOOM_connection_option_set(ZOOM_connection c, const char *key,
4326                                const char *val)
4327 {
4328     ZOOM_options_set(c->options, key, val);
4329 }
4330
4331 ZOOM_API(void)
4332     ZOOM_connection_option_setl(ZOOM_connection c, const char *key,
4333                                 const char *val, int len)
4334 {
4335     ZOOM_options_setl(c->options, key, val, len);
4336 }
4337
4338 ZOOM_API(const char *)
4339     ZOOM_resultset_option_get(ZOOM_resultset r, const char *key)
4340 {
4341     return ZOOM_options_get(r->options, key);
4342 }
4343
4344 ZOOM_API(void)
4345     ZOOM_resultset_option_set(ZOOM_resultset r, const char *key,
4346                               const char *val)
4347 {
4348     ZOOM_options_set(r->options, key, val);
4349 }
4350
4351
4352 ZOOM_API(int)
4353     ZOOM_connection_errcode(ZOOM_connection c)
4354 {
4355     return ZOOM_connection_error(c, 0, 0);
4356 }
4357
4358 ZOOM_API(const char *)
4359     ZOOM_connection_errmsg(ZOOM_connection c)
4360 {
4361     const char *msg;
4362     ZOOM_connection_error(c, &msg, 0);
4363     return msg;
4364 }
4365
4366 ZOOM_API(const char *)
4367     ZOOM_connection_addinfo(ZOOM_connection c)
4368 {
4369     const char *addinfo;
4370     ZOOM_connection_error(c, 0, &addinfo);
4371     return addinfo;
4372 }
4373
4374 ZOOM_API(const char *)
4375     ZOOM_connection_diagset(ZOOM_connection c)
4376 {
4377     const char *diagset;
4378     ZOOM_connection_error_x(c, 0, 0, &diagset);
4379     return diagset;
4380 }
4381
4382 ZOOM_API(const char *)
4383     ZOOM_diag_str(int error)
4384 {
4385     switch (error)
4386     {
4387     case ZOOM_ERROR_NONE:
4388         return "No error";
4389     case ZOOM_ERROR_CONNECT:
4390         return "Connect failed";
4391     case ZOOM_ERROR_MEMORY:
4392         return "Out of memory";
4393     case ZOOM_ERROR_ENCODE:
4394         return "Encoding failed";
4395     case ZOOM_ERROR_DECODE:
4396         return "Decoding failed";
4397     case ZOOM_ERROR_CONNECTION_LOST:
4398         return "Connection lost";
4399     case ZOOM_ERROR_INIT:
4400         return "Init rejected";
4401     case ZOOM_ERROR_INTERNAL:
4402         return "Internal failure";
4403     case ZOOM_ERROR_TIMEOUT:
4404         return "Timeout";
4405     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
4406         return "Unsupported protocol";
4407     case ZOOM_ERROR_UNSUPPORTED_QUERY:
4408         return "Unsupported query type";
4409     case ZOOM_ERROR_INVALID_QUERY:
4410         return "Invalid query";
4411     case ZOOM_ERROR_CQL_PARSE:
4412         return "CQL parsing error";
4413     case ZOOM_ERROR_CQL_TRANSFORM:
4414         return "CQL transformation error";
4415     case ZOOM_ERROR_CCL_CONFIG:
4416         return "CCL configuration error";
4417     case ZOOM_ERROR_CCL_PARSE:
4418         return "CCL parsing error";
4419     default:
4420         return diagbib1_str(error);
4421     }
4422 }
4423
4424 ZOOM_API(int)
4425     ZOOM_connection_error_x(ZOOM_connection c, const char **cp,
4426                             const char **addinfo, const char **diagset)
4427 {
4428     int error = c->error;
4429     if (cp)
4430     {
4431         if (!c->diagset || !strcmp(c->diagset, "ZOOM"))
4432             *cp = ZOOM_diag_str(error);
4433         else if (!strcmp(c->diagset, "HTTP"))
4434             *cp = z_HTTP_errmsg(c->error);
4435         else if (!strcmp(c->diagset, "Bib-1"))
4436             *cp = ZOOM_diag_str(error);
4437         else if (!strcmp(c->diagset, "info:srw/diagnostic/1"))
4438             *cp = yaz_diag_srw_str(c->error);
4439         else
4440             *cp = "Unknown error and diagnostic set";
4441     }
4442     if (addinfo)
4443         *addinfo = c->addinfo ? c->addinfo : "";
4444     if (diagset)
4445         *diagset = c->diagset ? c->diagset : "";
4446     return c->error;
4447 }
4448
4449 ZOOM_API(int)
4450     ZOOM_connection_error(ZOOM_connection c, const char **cp,
4451                           const char **addinfo)
4452 {
4453     return ZOOM_connection_error_x(c, cp, addinfo, 0);
4454 }
4455
4456 static void ZOOM_connection_do_io(ZOOM_connection c, int mask)
4457 {
4458     ZOOM_Event event = 0;
4459     int r = cs_look(c->cs);
4460     yaz_log(log_details, "%p ZOOM_connection_do_io mask=%d cs_look=%d",
4461             c, mask, r);
4462
4463     if (r == CS_NONE)
4464     {
4465         event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
4466         set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
4467         do_close(c);
4468         ZOOM_connection_put_event(c, event);
4469     }
4470     else if (r == CS_CONNECT)
4471     {
4472         int ret = ret = cs_rcvconnect(c->cs);
4473         yaz_log(log_details, "%p ZOOM_connection_do_io "
4474                 "cs_rcvconnect returned %d", c, ret);
4475         if (ret == 1)
4476         {
4477             int mask = ZOOM_SELECT_EXCEPT;
4478             if (c->cs->io_pending & CS_WANT_WRITE)
4479                 mask += ZOOM_SELECT_WRITE;
4480             if (c->cs->io_pending & CS_WANT_READ)
4481                 mask += ZOOM_SELECT_READ;
4482             ZOOM_connection_set_mask(c, mask);
4483             event = ZOOM_Event_create(ZOOM_EVENT_NONE);
4484             ZOOM_connection_put_event(c, event);
4485         }
4486         else if (ret == 0)
4487         {
4488             event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
4489             ZOOM_connection_put_event(c, event);
4490             get_cert(c);
4491             if (c->proto == PROTO_Z3950)
4492                 ZOOM_connection_send_init(c);
4493             else
4494             {
4495                 /* no init request for SRW .. */
4496                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
4497                 ZOOM_connection_remove_task(c);
4498                 ZOOM_connection_set_mask(c, 0);
4499                 ZOOM_connection_exec_task(c);
4500             }
4501             c->state = STATE_ESTABLISHED;
4502         }
4503         else
4504         {
4505             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
4506             do_close(c);
4507         }
4508     }
4509     else
4510     {
4511         if (mask & ZOOM_SELECT_EXCEPT)
4512         {
4513             if (!ZOOM_test_reconnect(c))
4514             {
4515                 set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
4516                 do_close(c);
4517             }
4518             return;
4519         }
4520         if (mask & ZOOM_SELECT_READ)
4521             do_read(c);
4522         if (c->cs && (mask & ZOOM_SELECT_WRITE))
4523             do_write(c);
4524     }
4525 }
4526
4527 ZOOM_API(int)
4528     ZOOM_connection_last_event(ZOOM_connection cs)
4529 {
4530     if (!cs)
4531         return ZOOM_EVENT_NONE;
4532     return cs->last_event;
4533 }
4534
4535
4536 static void cql2pqf_wrbuf_puts(const char *buf, void *client_data)
4537 {
4538     WRBUF wrbuf = (WRBUF) client_data;
4539     wrbuf_puts(wrbuf, buf);
4540 }
4541
4542 /*
4543  * Returns an xmalloc()d string containing RPN that corresponds to the
4544  * CQL passed in.  On error, sets the Connection object's error state
4545  * and returns a null pointer.
4546  * ### We could cache CQL parser and/or transformer in Connection.
4547  */
4548 static char *cql2pqf(ZOOM_connection c, const char *cql)
4549 {
4550     CQL_parser parser;
4551     int error;
4552     const char *cqlfile;
4553     cql_transform_t trans;
4554     char *result = 0;
4555
4556     parser = cql_parser_create();
4557     if ((error = cql_parser_string(parser, cql)) != 0) {
4558         cql_parser_destroy(parser);
4559         set_ZOOM_error(c, ZOOM_ERROR_CQL_PARSE, cql);
4560         return 0;
4561     }
4562
4563     cqlfile = ZOOM_connection_option_get(c, "cqlfile");
4564     if (cqlfile == 0)
4565     {
4566         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, "no CQL transform file");
4567     }
4568     else if ((trans = cql_transform_open_fname(cqlfile)) == 0)
4569     {
4570         char buf[512];
4571         sprintf(buf, "can't open CQL transform file '%.200s': %.200s",
4572                 cqlfile, strerror(errno));
4573         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4574     }
4575     else
4576     {
4577         WRBUF wrbuf_result = wrbuf_alloc();
4578         error = cql_transform(trans, cql_parser_result(parser),
4579                               cql2pqf_wrbuf_puts, wrbuf_result);
4580         if (error != 0) {
4581             char buf[512];
4582             const char *addinfo;
4583             error = cql_transform_error(trans, &addinfo);
4584             sprintf(buf, "%.200s (addinfo=%.200s)",
4585                     cql_strerror(error), addinfo);
4586             set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4587         }
4588         else
4589         {
4590             result = xstrdup(wrbuf_cstr(wrbuf_result));
4591         }
4592         cql_transform_close(trans);
4593         wrbuf_destroy(wrbuf_result);
4594     }
4595     cql_parser_destroy(parser);
4596     return result;
4597 }
4598
4599 ZOOM_API(int) ZOOM_connection_fire_event_timeout(ZOOM_connection c)
4600 {
4601     if (c->mask)
4602     {
4603         ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
4604         /* timeout and this connection was waiting */
4605         set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
4606         do_close(c);
4607         ZOOM_connection_put_event(c, event);
4608     }
4609     return 0;
4610 }
4611
4612 ZOOM_API(int)
4613     ZOOM_connection_process(ZOOM_connection c)
4614 {
4615     ZOOM_Event event;
4616     if (!c)
4617         return 0;
4618
4619     event = ZOOM_connection_get_event(c);
4620     if (event)
4621     {
4622         ZOOM_Event_destroy(event);
4623         return 1;
4624     }
4625     ZOOM_connection_exec_task(c);
4626     event = ZOOM_connection_get_event(c);
4627     if (event)
4628     {
4629         ZOOM_Event_destroy(event);
4630         return 1;
4631     }
4632     return 0;
4633 }
4634
4635 ZOOM_API(int)
4636     ZOOM_event_nonblock(int no, ZOOM_connection *cs)
4637 {
4638     int i;
4639
4640     yaz_log(log_details, "ZOOM_process_event(no=%d,cs=%p)", no, cs);
4641
4642     for (i = 0; i<no; i++)
4643     {
4644         ZOOM_connection c = cs[i];
4645
4646         if (c && ZOOM_connection_process(c))
4647             return i+1;
4648     }
4649     return 0;
4650 }
4651
4652 ZOOM_API(int) ZOOM_connection_fire_event_socket(ZOOM_connection c, int mask)
4653 {
4654     if (c->mask && mask)
4655         ZOOM_connection_do_io(c, mask);
4656     return 0;
4657 }
4658
4659 ZOOM_API(int) ZOOM_connection_get_socket(ZOOM_connection c)
4660 {
4661     if (c->cs)
4662         return cs_fileno(c->cs);
4663     return -1;
4664 }
4665
4666 ZOOM_API(int) ZOOM_connection_set_mask(ZOOM_connection c, int mask)
4667 {
4668     c->mask = mask;
4669     if (!c->cs)
4670         return -1;
4671     return 0;
4672 }
4673
4674 ZOOM_API(int) ZOOM_connection_get_mask(ZOOM_connection c)
4675 {
4676     if (c->cs)
4677         return c->mask;
4678     return 0;
4679 }
4680
4681 ZOOM_API(int) ZOOM_connection_get_timeout(ZOOM_connection c)
4682 {
4683     return ZOOM_options_get_int(c->options, "timeout", 30);
4684 }
4685
4686 /*
4687  * Local variables:
4688  * c-basic-offset: 4
4689  * indent-tabs-mode: nil
4690  * End:
4691  * vim: shiftwidth=4 tabstop=8 expandtab
4692  */
4693