src/zoom-c.c

   1 /*
   2  * Copyright (C) 1995-2007, Index Data ApS
   3  * See the file LICENSE for details.
   4  *
   5  * $Id: zoom-c.c,v 1.148 2007-09-11 08:40:28 adam Exp $
   6  */
   7 /**
   8  * \file zoom-c.c
   9  * \brief Implements ZOOM C interface.
  10  */
  11
  12 #include <assert.h>
  13 #include <string.h>
  14 #include <errno.h>
  15 #include "zoom-p.h"
  16
  17 #include <yaz/yaz-util.h>
  18 #include <yaz/xmalloc.h>
  19 #include <yaz/otherinfo.h>
  20 #include <yaz/log.h>
  21 #include <yaz/pquery.h>
  22 #include <yaz/marcdisp.h>
  23 #include <yaz/diagbib1.h>
  24 #include <yaz/charneg.h>
  25 #include <yaz/ill.h>
  26 #include <yaz/srw.h>
  27 #include <yaz/cql.h>
  28 #include <yaz/ccl.h>
  29 #include <yaz/query-charset.h>
  30 #include <yaz/copy_types.h>
  31 #include <yaz/snprintf.h>
  32
  33 static int log_api = 0;
  34 static int log_details = 0;
  35
  36 typedef enum {
  37     zoom_pending,
  38     zoom_complete
  39 } zoom_ret;
  40
  41 static void resultset_destroy(ZOOM_resultset r);
  42 static zoom_ret ZOOM_connection_send_init(ZOOM_connection c);
  43 static zoom_ret do_write_ex(ZOOM_connection c, char *buf_out, int len_out);
  44 static char *cql2pqf(ZOOM_connection c, const char *cql);
  45
  46
  47 /*
  48  * This wrapper is just for logging failed lookups.  It would be nicer
  49  * if it could cause failure when a lookup fails, but that's hard.
  50  */
  51 static Odr_oid *zoom_yaz_str_to_z3950oid(ZOOM_connection c,
  52                                      int oid_class, const char *str) {
  53     Odr_oid *res = yaz_string_to_oid_odr(yaz_oid_std(), oid_class, str,
  54                                      c->odr_out);
  55     if (res == 0)
  56         yaz_log(YLOG_WARN, "%p OID lookup (%d, '%s') failed",
  57                 c, (int) oid_class, str);
  58     return res;
  59 }
  60
  61
  62 static void initlog(void)
  63 {
  64     static int log_level_initialized = 0;
  65     if (!log_level_initialized)
  66     {
  67         log_api = yaz_log_module_level("zoom");
  68         log_details = yaz_log_module_level("zoomdetails");
  69         log_level_initialized = 1;
  70     }
  71 }
  72
  73 static ZOOM_Event ZOOM_Event_create(int kind)
  74 {
  75     ZOOM_Event event = (ZOOM_Event) xmalloc(sizeof(*event));
  76     event->kind = kind;
  77     event->next = 0;
  78     event->prev = 0;
  79     yaz_log(log_details, "ZOOM_Event_create(kind=%d)", kind);
  80     return event;
  81 }
  82
  83 static void ZOOM_Event_destroy(ZOOM_Event event)
  84 {
  85     xfree(event);
  86 }
  87
  88 static void ZOOM_connection_put_event(ZOOM_connection c, ZOOM_Event event)
  89 {
  90     if (c->m_queue_back)
  91     {
  92         c->m_queue_back->prev = event;
  93         assert(c->m_queue_front);
  94     }
  95     else
  96     {
  97         assert(!c->m_queue_front);
  98         c->m_queue_front = event;
  99     }
 100     event->next = c->m_queue_back;
 101     event->prev = 0;
 102     c->m_queue_back = event;
 103 }
 104
 105 static ZOOM_Event ZOOM_connection_get_event(ZOOM_connection c)
 106 {
 107     ZOOM_Event event = c->m_queue_front;
 108     if (!event)
 109     {
 110         c->last_event = ZOOM_EVENT_NONE;
 111         return 0;
 112     }
 113     assert(c->m_queue_back);
 114     c->m_queue_front = event->prev;
 115     if (c->m_queue_front)
 116     {
 117         assert(c->m_queue_back);
 118         c->m_queue_front->next = 0;
 119     }
 120     else
 121         c->m_queue_back = 0;
 122     c->last_event = event->kind;
 123     return event;
 124 }
 125
 126 static void ZOOM_connection_remove_events(ZOOM_connection c)
 127 {
 128     ZOOM_Event event;
 129     while ((event = ZOOM_connection_get_event(c)))
 130         ZOOM_Event_destroy(event);
 131 }
 132
 133 ZOOM_API(int) ZOOM_connection_peek_event(ZOOM_connection c)
 134 {
 135     ZOOM_Event event = c->m_queue_front;
 136
 137     return event ? event->kind : ZOOM_EVENT_NONE;
 138 }
 139
 140 void ZOOM_connection_remove_tasks(ZOOM_connection c);
 141
 142 static void set_dset_error(ZOOM_connection c, int error,
 143                            const char *dset,
 144                            const char *addinfo, const char *addinfo2)
 145 {
 146     char *cp;
 147
 148     xfree(c->addinfo);
 149     c->addinfo = 0;
 150     c->error = error;
 151     if (!c->diagset || strcmp(dset, c->diagset))
 152     {
 153         xfree(c->diagset);
 154         c->diagset = xstrdup(dset);
 155         /* remove integer part from SRW diagset .. */
 156         if ((cp = strrchr(c->diagset, '/')))
 157             *cp = '\0';
 158     }
 159     if (addinfo && addinfo2)
 160     {
 161         c->addinfo = (char*) xmalloc(strlen(addinfo) + strlen(addinfo2) + 2);
 162         strcpy(c->addinfo, addinfo);
 163         strcat(c->addinfo, addinfo2);
 164     }
 165     else if (addinfo)
 166         c->addinfo = xstrdup(addinfo);
 167     if (error != ZOOM_ERROR_NONE)
 168     {
 169         yaz_log(log_api, "%p set_dset_error %s %s:%d %s %s",
 170                 c, c->host_port ? c->host_port : "<>", dset, error,
 171                 addinfo ? addinfo : "",
 172                 addinfo2 ? addinfo2 : "");
 173         ZOOM_connection_remove_tasks(c);
 174     }
 175 }
 176
 177 #if YAZ_HAVE_XML2
 178 static void set_HTTP_error(ZOOM_connection c, int error,
 179                            const char *addinfo, const char *addinfo2)
 180 {
 181     set_dset_error(c, error, "HTTP", addinfo, addinfo2);
 182 }
 183
 184 static int uri_to_code(const char *uri)
 185 {
 186     int code = 0;
 187     const char *cp;
 188     if ((cp = strrchr(uri, '/')))
 189         code = atoi(cp+1);
 190     return code;
 191 }
 192
 193 static void set_SRU_error(ZOOM_connection c, Z_SRW_diagnostic *d)
 194 {
 195     const char *uri = d->uri;
 196     if (uri)
 197         set_dset_error(c, uri_to_code(uri), uri, d->details, 0);
 198 }
 199
 200 #endif
 201
 202
 203 static void set_ZOOM_error(ZOOM_connection c, int error,
 204                            const char *addinfo)
 205 {
 206     set_dset_error(c, error, "ZOOM", addinfo, 0);
 207 }
 208
 209 static void clear_error(ZOOM_connection c)
 210 {
 211     /*
 212      * If an error is tied to an operation then it's ok to clear: for
 213      * example, a diagnostic returned from a search is cleared by a
 214      * subsequent search.  However, problems such as Connection Lost
 215      * or Init Refused are not cleared, because they are not
 216      * recoverable: doing another search doesn't help.
 217      */
 218
 219     ZOOM_connection_remove_events(c);
 220     switch (c->error)
 221     {
 222     case ZOOM_ERROR_CONNECT:
 223     case ZOOM_ERROR_MEMORY:
 224     case ZOOM_ERROR_DECODE:
 225     case ZOOM_ERROR_CONNECTION_LOST:
 226     case ZOOM_ERROR_INIT:
 227     case ZOOM_ERROR_INTERNAL:
 228     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
 229         break;
 230     default:
 231         set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 232     }
 233 }
 234
 235 void ZOOM_connection_show_task(ZOOM_task task)
 236 {
 237     switch(task->which)
 238     {
 239     case ZOOM_TASK_SEARCH:
 240         yaz_log(YLOG_LOG, "search p=%p", task);
 241         break;
 242     case ZOOM_TASK_RETRIEVE:
 243         yaz_log(YLOG_LOG, "retrieve p=%p", task);
 244         break;
 245     case ZOOM_TASK_CONNECT:
 246         yaz_log(YLOG_LOG, "connect p=%p", task);
 247         break;
 248     case ZOOM_TASK_SCAN:
 249         yaz_log(YLOG_LOG, "scant p=%p", task);
 250         break;
 251     }
 252 }
 253
 254 void ZOOM_connection_show_tasks(ZOOM_connection c)
 255 {
 256     ZOOM_task task;
 257     yaz_log(YLOG_LOG, "connection p=%p tasks", c);
 258     for (task = c->tasks; task; task = task->next)
 259         ZOOM_connection_show_task(task);
 260 }
 261
 262 ZOOM_task ZOOM_connection_add_task(ZOOM_connection c, int which)
 263 {
 264     ZOOM_task *taskp = &c->tasks;
 265     while (*taskp)
 266         taskp = &(*taskp)->next;
 267     *taskp = (ZOOM_task) xmalloc(sizeof(**taskp));
 268     (*taskp)->running = 0;
 269     (*taskp)->which = which;
 270     (*taskp)->next = 0;
 271     clear_error(c);
 272     return *taskp;
 273 }
 274
 275 ZOOM_API(int) ZOOM_connection_is_idle(ZOOM_connection c)
 276 {
 277     return c->tasks ? 0 : 1;
 278 }
 279
 280 ZOOM_task ZOOM_connection_insert_task(ZOOM_connection c, int which)
 281 {
 282     ZOOM_task task = (ZOOM_task) xmalloc(sizeof(*task));
 283
 284     task->next = c->tasks;
 285     c->tasks = task;
 286
 287     task->running = 0;
 288     task->which = which;
 289     clear_error(c);
 290     return task;
 291 }
 292
 293 void ZOOM_connection_remove_task(ZOOM_connection c)
 294 {
 295     ZOOM_task task = c->tasks;
 296
 297     if (task)
 298     {
 299         c->tasks = task->next;
 300         switch (task->which)
 301         {
 302         case ZOOM_TASK_SEARCH:
 303             resultset_destroy(task->u.search.resultset);
 304             xfree(task->u.search.syntax);
 305             xfree(task->u.search.elementSetName);
 306             break;
 307         case ZOOM_TASK_RETRIEVE:
 308             resultset_destroy(task->u.retrieve.resultset);
 309             xfree(task->u.retrieve.syntax);
 310             xfree(task->u.retrieve.elementSetName);
 311             break;
 312         case ZOOM_TASK_CONNECT:
 313             break;
 314         case ZOOM_TASK_SCAN:
 315             ZOOM_scanset_destroy(task->u.scan.scan);
 316             break;
 317         case ZOOM_TASK_PACKAGE:
 318             ZOOM_package_destroy(task->u.package);
 319             break;
 320         case ZOOM_TASK_SORT:
 321             resultset_destroy(task->u.sort.resultset);
 322             ZOOM_query_destroy(task->u.sort.q);
 323             break;
 324         default:
 325             assert(0);
 326         }
 327         xfree(task);
 328
 329         if (!c->tasks)
 330         {
 331             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_END);
 332             ZOOM_connection_put_event(c, event);
 333         }
 334     }
 335 }
 336
 337 static int ZOOM_connection_exec_task(ZOOM_connection c);
 338
 339 void ZOOM_connection_remove_tasks(ZOOM_connection c)
 340 {
 341     while (c->tasks)
 342         ZOOM_connection_remove_task(c);
 343 }
 344
 345 static ZOOM_record record_cache_lookup(ZOOM_resultset r, int pos,
 346                                        const char *syntax,
 347                                        const char *elementSetName);
 348
 349 ZOOM_API(ZOOM_connection)
 350     ZOOM_connection_create(ZOOM_options options)
 351 {
 352     ZOOM_connection c = (ZOOM_connection) xmalloc(sizeof(*c));
 353
 354     initlog();
 355
 356     yaz_log(log_api, "%p ZOOM_connection_create", c);
 357
 358     c->proto = PROTO_Z3950;
 359     c->cs = 0;
 360     ZOOM_connection_set_mask(c, 0);
 361     c->reconnect_ok = 0;
 362     c->state = STATE_IDLE;
 363     c->addinfo = 0;
 364     c->diagset = 0;
 365     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 366     c->buf_in = 0;
 367     c->len_in = 0;
 368     c->buf_out = 0;
 369     c->len_out = 0;
 370     c->resultsets = 0;
 371
 372     c->options = ZOOM_options_create_with_parent(options);
 373
 374     c->host_port = 0;
 375     c->path = 0;
 376     c->proxy = 0;
 377
 378     c->charset = c->lang = 0;
 379
 380     c->cookie_out = 0;
 381     c->cookie_in = 0;
 382     c->client_IP = 0;
 383     c->tasks = 0;
 384
 385     c->user = 0;
 386     c->group = 0;
 387     c->password = 0;
 388
 389     c->maximum_record_size = 0;
 390     c->preferred_message_size = 0;
 391
 392     c->odr_in = odr_createmem(ODR_DECODE);
 393     c->odr_out = odr_createmem(ODR_ENCODE);
 394
 395     c->async = 0;
 396     c->support_named_resultsets = 0;
 397     c->last_event = ZOOM_EVENT_NONE;
 398
 399     c->m_queue_front = 0;
 400     c->m_queue_back = 0;
 401
 402     c->sru_version = xstrdup("1.1");
 403     return c;
 404 }
 405
 406
 407 /* set database names. Take local databases (if set); otherwise
 408    take databases given in ZURL (if set); otherwise use Default */
 409 static char **set_DatabaseNames(ZOOM_connection con, ZOOM_options options,
 410                                 int *num, ODR odr)
 411 {
 412     char **databaseNames;
 413     const char *cp = ZOOM_options_get(options, "databaseName");
 414
 415     if ((!cp || !*cp) && con->host_port)
 416     {
 417         if (strncmp(con->host_port, "unix:", 5) == 0)
 418             cp = strchr(con->host_port+5, ':');
 419         else
 420             cp = strchr(con->host_port, '/');
 421         if (cp)
 422             cp++;
 423     }
 424     if (!cp)
 425         cp = "Default";
 426     nmem_strsplit(odr_getmem(odr), "+", cp,  &databaseNames, num);
 427     return databaseNames;
 428 }
 429
 430 ZOOM_API(ZOOM_connection)
 431     ZOOM_connection_new(const char *host, int portnum)
 432 {
 433     ZOOM_connection c = ZOOM_connection_create(0);
 434
 435     ZOOM_connection_connect(c, host, portnum);
 436     return c;
 437 }
 438
 439 static zoom_sru_mode get_sru_mode_from_string(const char *s)
 440 {
 441     if (!s || !*s)
 442         return zoom_sru_soap;
 443     if (!yaz_matchstr(s, "soap"))
 444         return zoom_sru_soap;
 445     else if (!yaz_matchstr(s, "get"))
 446         return zoom_sru_get;
 447     else if (!yaz_matchstr(s, "post"))
 448         return zoom_sru_post;
 449     return zoom_sru_error;
 450 }
 451
 452 ZOOM_API(void)
 453     ZOOM_connection_connect(ZOOM_connection c,
 454                             const char *host, int portnum)
 455 {
 456     const char *val;
 457     ZOOM_task task;
 458
 459     initlog();
 460
 461     yaz_log(log_api, "%p ZOOM_connection_connect host=%s portnum=%d",
 462             c, host ? host : "null", portnum);
 463
 464     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 465     ZOOM_connection_remove_tasks(c);
 466
 467     if (c->cs)
 468     {
 469         yaz_log(log_details, "%p ZOOM_connection_connect reconnect ok", c);
 470         c->reconnect_ok = 1;
 471         return;
 472     }
 473     yaz_log(log_details, "%p ZOOM_connection_connect connect", c);
 474     xfree(c->proxy);
 475     c->proxy = 0;
 476     val = ZOOM_options_get(c->options, "proxy");
 477     if (val && *val)
 478     {
 479         yaz_log(log_details, "%p ZOOM_connection_connect proxy=%s", c, val);
 480         c->proxy = xstrdup(val);
 481     }
 482
 483     xfree(c->charset);
 484     c->charset = 0;
 485     val = ZOOM_options_get(c->options, "charset");
 486     if (val && *val)
 487     {
 488         yaz_log(log_details, "%p ZOOM_connection_connect charset=%s", c, val);
 489         c->charset = xstrdup(val);
 490     }
 491
 492     xfree(c->lang);
 493     val = ZOOM_options_get(c->options, "lang");
 494     if (val && *val)
 495     {
 496         yaz_log(log_details, "%p ZOOM_connection_connect lang=%s", c, val);
 497         c->lang = xstrdup(val);
 498     }
 499     else
 500         c->lang = 0;
 501
 502     if (host)
 503     {
 504         xfree(c->host_port);
 505         if (portnum)
 506         {
 507             char hostn[128];
 508             sprintf(hostn, "%.80s:%d", host, portnum);
 509             c->host_port = xstrdup(hostn);
 510         }
 511         else
 512             c->host_port = xstrdup(host);
 513     }
 514
 515     {
 516         /*
 517          * If the "<scheme>:" part of the host string is preceded by one
 518          * or more comma-separated <name>=<value> pairs, these are taken
 519          * to be options to be set on the connection object.  Among other
 520          * applications, this facility can be used to embed authentication
 521          * in a host string:
 522          *          user=admin,password=secret,tcp:localhost:9999
 523          */
 524         char *remainder = c->host_port;
 525         char *pcolon = strchr(remainder, ':');
 526         char *pcomma;
 527         char *pequals;
 528         while ((pcomma = strchr(remainder, ',')) != 0 &&
 529                (pcolon == 0 || pcomma < pcolon)) {
 530             *pcomma = '\0';
 531             if ((pequals = strchr(remainder, '=')) != 0) {
 532                 *pequals = '\0';
 533                 /*printf("# setting '%s'='%s'\n", remainder, pequals+1);*/
 534                 ZOOM_connection_option_set(c, remainder, pequals+1);
 535             }
 536             remainder = pcomma+1;
 537         }
 538
 539         if (remainder != c->host_port) {
 540             xfree(c->host_port);
 541             c->host_port = xstrdup(remainder);
 542             /*printf("# reset hp='%s'\n", remainder);*/
 543         }
 544     }
 545
 546     val = ZOOM_options_get(c->options, "sru");
 547     c->sru_mode = get_sru_mode_from_string(val);
 548
 549     xfree(c->sru_version);
 550     val = ZOOM_options_get(c->options, "sru_version");
 551     c->sru_version = xstrdup(val ? val : "1.1");
 552
 553     ZOOM_options_set(c->options, "host", c->host_port);
 554
 555     xfree(c->cookie_out);
 556     c->cookie_out = 0;
 557     val = ZOOM_options_get(c->options, "cookie");
 558     if (val && *val)
 559     {
 560         yaz_log(log_details, "%p ZOOM_connection_connect cookie=%s", c, val);
 561         c->cookie_out = xstrdup(val);
 562     }
 563
 564     xfree(c->client_IP);
 565     c->client_IP = 0;
 566     val = ZOOM_options_get(c->options, "clientIP");
 567     if (val && *val)
 568     {
 569         yaz_log(log_details, "%p ZOOM_connection_connect clientIP=%s",
 570                 c, val);
 571         c->client_IP = xstrdup(val);
 572     }
 573
 574     xfree(c->group);
 575     c->group = 0;
 576     val = ZOOM_options_get(c->options, "group");
 577     if (val && *val)
 578         c->group = xstrdup(val);
 579
 580     xfree(c->user);
 581     c->user = 0;
 582     val = ZOOM_options_get(c->options, "user");
 583     if (val && *val)
 584         c->user = xstrdup(val);
 585
 586     xfree(c->password);
 587     c->password = 0;
 588     val = ZOOM_options_get(c->options, "password");
 589     if (!val)
 590         val = ZOOM_options_get(c->options, "pass");
 591
 592     if (val && *val)
 593         c->password = xstrdup(val);
 594
 595     c->maximum_record_size =
 596         ZOOM_options_get_int(c->options, "maximumRecordSize", 1024*1024);
 597     c->preferred_message_size =
 598         ZOOM_options_get_int(c->options, "preferredMessageSize", 1024*1024);
 599
 600     c->async = ZOOM_options_get_bool(c->options, "async", 0);
 601     yaz_log(log_details, "%p ZOOM_connection_connect async=%d", c, c->async);
 602
 603     task = ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 604
 605     if (!c->async)
 606     {
 607         while (ZOOM_event(1, &c))
 608             ;
 609     }
 610 }
 611
 612 ZOOM_API(ZOOM_query)
 613     ZOOM_query_create(void)
 614 {
 615     ZOOM_query s = (ZOOM_query) xmalloc(sizeof(*s));
 616
 617     yaz_log(log_details, "%p ZOOM_query_create", s);
 618     s->refcount = 1;
 619     s->z_query = 0;
 620     s->sort_spec = 0;
 621     s->odr = odr_createmem(ODR_ENCODE);
 622     s->query_string = 0;
 623
 624     return s;
 625 }
 626
 627 ZOOM_API(void)
 628     ZOOM_query_destroy(ZOOM_query s)
 629 {
 630     if (!s)
 631         return;
 632
 633     (s->refcount)--;
 634     yaz_log(log_details, "%p ZOOM_query_destroy count=%d", s, s->refcount);
 635     if (s->refcount == 0)
 636     {
 637         odr_destroy(s->odr);
 638         xfree(s);
 639     }
 640 }
 641
 642 ZOOM_API(int)
 643     ZOOM_query_prefix(ZOOM_query s, const char *str)
 644 {
 645     s->query_string = odr_strdup(s->odr, str);
 646     s->z_query = (Z_Query *) odr_malloc(s->odr, sizeof(*s->z_query));
 647     s->z_query->which = Z_Query_type_1;
 648     s->z_query->u.type_1 =  p_query_rpn(s->odr, str);
 649     if (!s->z_query->u.type_1)
 650     {
 651         yaz_log(log_details, "%p ZOOM_query_prefix str=%s failed", s, str);
 652         s->z_query = 0;
 653         return -1;
 654     }
 655     yaz_log(log_details, "%p ZOOM_query_prefix str=%s", s, str);
 656     return 0;
 657 }
 658
 659 ZOOM_API(int)
 660     ZOOM_query_cql(ZOOM_query s, const char *str)
 661 {
 662     Z_External *ext;
 663
 664     s->query_string = odr_strdup(s->odr, str);
 665
 666     ext = (Z_External *) odr_malloc(s->odr, sizeof(*ext));
 667     ext->direct_reference = odr_oiddup(s->odr, yaz_oid_userinfo_cql);
 668     ext->indirect_reference = 0;
 669     ext->descriptor = 0;
 670     ext->which = Z_External_CQL;
 671     ext->u.cql = s->query_string;
 672
 673     s->z_query = (Z_Query *) odr_malloc(s->odr, sizeof(*s->z_query));
 674     s->z_query->which = Z_Query_type_104;
 675     s->z_query->u.type_104 =  ext;
 676
 677     yaz_log(log_details, "%p ZOOM_query_cql str=%s", s, str);
 678
 679     return 0;
 680 }
 681
 682 /*
 683  * Translate the CQL string client-side into RPN which is passed to
 684  * the server.  This is useful for server's that don't themselves
 685  * support CQL, for which ZOOM_query_cql() is useless.  `conn' is used
 686  * only as a place to stash diagnostics if compilation fails; if this
 687  * information is not needed, a null pointer may be used.
 688  */
 689 ZOOM_API(int)
 690     ZOOM_query_cql2rpn(ZOOM_query s, const char *str, ZOOM_connection conn)
 691 {
 692     char *rpn;
 693     int ret;
 694     ZOOM_connection freeme = 0;
 695
 696     yaz_log(log_details, "%p ZOOM_query_cql2rpn str=%s conn=%p", s, str, conn);
 697     if (conn == 0)
 698         conn = freeme = ZOOM_connection_create(0);
 699
 700     rpn = cql2pqf(conn, str);
 701     if (freeme != 0)
 702         ZOOM_connection_destroy(freeme);
 703     if (rpn == 0)
 704         return -1;
 705
 706     ret = ZOOM_query_prefix(s, rpn);
 707     xfree(rpn);
 708     return ret;
 709 }
 710
 711 /*
 712  * Analogous in every way to ZOOM_query_cql2rpn(), except that there
 713  * is no analogous ZOOM_query_ccl() that just sends uninterpreted CCL
 714  * to the server, as the YAZ GFS doesn't know how to handle this.
 715  */
 716 ZOOM_API(int)
 717     ZOOM_query_ccl2rpn(ZOOM_query s, const char *str, const char *config,
 718                        int *ccl_error, const char **error_string,
 719                        int *error_pos)
 720 {
 721     int ret;
 722     struct ccl_rpn_node *rpn;
 723     CCL_bibset bibset = ccl_qual_mk();
 724
 725     if (config)
 726         ccl_qual_buf(bibset, config);
 727
 728     rpn = ccl_find_str(bibset, str, ccl_error, error_pos);
 729     if (!rpn)
 730     {
 731         *error_string = ccl_err_msg(*ccl_error);
 732         ret = -1;
 733     }
 734     else
 735     {
 736         WRBUF wr = wrbuf_alloc();
 737         ccl_pquery(wr, rpn);
 738         ccl_rpn_delete(rpn);
 739         ret = ZOOM_query_prefix(s, wrbuf_cstr(wr));
 740         wrbuf_destroy(wr);
 741     }
 742     ccl_qual_rm(&bibset);
 743     return ret;
 744 }
 745
 746 ZOOM_API(int)
 747     ZOOM_query_sortby(ZOOM_query s, const char *criteria)
 748 {
 749     s->sort_spec = yaz_sort_spec(s->odr, criteria);
 750     if (!s->sort_spec)
 751     {
 752         yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s failed",
 753                 s, criteria);
 754         return -1;
 755     }
 756     yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s", s, criteria);
 757     return 0;
 758 }
 759
 760 static zoom_ret do_write(ZOOM_connection c);
 761
 762 ZOOM_API(void)
 763     ZOOM_connection_destroy(ZOOM_connection c)
 764 {
 765     ZOOM_resultset r;
 766     if (!c)
 767         return;
 768     yaz_log(log_api, "%p ZOOM_connection_destroy", c);
 769     if (c->cs)
 770         cs_close(c->cs);
 771     for (r = c->resultsets; r; r = r->next)
 772         r->connection = 0;
 773
 774     xfree(c->buf_in);
 775     xfree(c->addinfo);
 776     xfree(c->diagset);
 777     odr_destroy(c->odr_in);
 778     odr_destroy(c->odr_out);
 779     ZOOM_options_destroy(c->options);
 780     ZOOM_connection_remove_tasks(c);
 781     ZOOM_connection_remove_events(c);
 782     xfree(c->host_port);
 783     xfree(c->path);
 784     xfree(c->proxy);
 785     xfree(c->charset);
 786     xfree(c->lang);
 787     xfree(c->cookie_out);
 788     xfree(c->cookie_in);
 789     xfree(c->client_IP);
 790     xfree(c->user);
 791     xfree(c->group);
 792     xfree(c->password);
 793     xfree(c->sru_version);
 794     xfree(c);
 795 }
 796
 797 void ZOOM_resultset_addref(ZOOM_resultset r)
 798 {
 799     if (r)
 800     {
 801         (r->refcount)++;
 802         yaz_log(log_details, "%p ZOOM_resultset_addref count=%d",
 803                 r, r->refcount);
 804     }
 805 }
 806
 807 ZOOM_resultset ZOOM_resultset_create(void)
 808 {
 809     int i;
 810     ZOOM_resultset r = (ZOOM_resultset) xmalloc(sizeof(*r));
 811
 812     initlog();
 813
 814     yaz_log(log_details, "%p ZOOM_resultset_create", r);
 815     r->refcount = 1;
 816     r->size = 0;
 817     r->odr = odr_createmem(ODR_ENCODE);
 818     r->piggyback = 1;
 819     r->setname = 0;
 820     r->schema = 0;
 821     r->step = 0;
 822     for (i = 0; i<RECORD_HASH_SIZE; i++)
 823         r->record_hash[i] = 0;
 824     r->r_sort_spec = 0;
 825     r->query = 0;
 826     r->connection = 0;
 827     r->next = 0;
 828     r->databaseNames = 0;
 829     r->num_databaseNames = 0;
 830     return r;
 831 }
 832
 833 ZOOM_API(ZOOM_resultset)
 834     ZOOM_connection_search_pqf(ZOOM_connection c, const char *q)
 835 {
 836     ZOOM_resultset r;
 837     ZOOM_query s = ZOOM_query_create();
 838
 839     ZOOM_query_prefix(s, q);
 840
 841     r = ZOOM_connection_search(c, s);
 842     ZOOM_query_destroy(s);
 843     return r;
 844 }
 845
 846 ZOOM_API(ZOOM_resultset)
 847     ZOOM_connection_search(ZOOM_connection c, ZOOM_query q)
 848 {
 849     ZOOM_resultset r = ZOOM_resultset_create();
 850     ZOOM_task task;
 851     const char *cp;
 852     int start, count;
 853     const char *syntax, *elementSetName;
 854
 855     yaz_log(log_api, "%p ZOOM_connection_search set %p query %p", c, r, q);
 856     r->r_sort_spec = q->sort_spec;
 857     r->query = q;
 858
 859     r->options = ZOOM_options_create_with_parent(c->options);
 860
 861     start = ZOOM_options_get_int(r->options, "start", 0);
 862     count = ZOOM_options_get_int(r->options, "count", 0);
 863     {
 864         /* If "presentChunk" is defined use that; otherwise "step" */
 865         const char *cp = ZOOM_options_get(r->options, "presentChunk");
 866         r->step = ZOOM_options_get_int(r->options,
 867                                        (cp != 0 ? "presentChunk": "step"), 0);
 868     }
 869     r->piggyback = ZOOM_options_get_bool(r->options, "piggyback", 1);
 870     cp = ZOOM_options_get(r->options, "setname");
 871     if (cp)
 872         r->setname = xstrdup(cp);
 873     cp = ZOOM_options_get(r->options, "schema");
 874     if (cp)
 875         r->schema = xstrdup(cp);
 876
 877     r->databaseNames = set_DatabaseNames(c, c->options, &r->num_databaseNames,
 878                                          r->odr);
 879
 880     r->connection = c;
 881
 882     r->next = c->resultsets;
 883     c->resultsets = r;
 884
 885
 886
 887     if (c->host_port && c->proto == PROTO_HTTP)
 888     {
 889         if (!c->cs)
 890         {
 891             yaz_log(log_details, "ZOOM_connection_search: no comstack");
 892             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 893         }
 894         else
 895         {
 896             yaz_log(log_details, "ZOOM_connection_search: reconnect");
 897             c->reconnect_ok = 1;
 898         }
 899     }
 900
 901     task = ZOOM_connection_add_task(c, ZOOM_TASK_SEARCH);
 902     task->u.search.resultset = r;
 903     task->u.search.start = start;
 904     task->u.search.count = count;
 905
 906     syntax = ZOOM_options_get(r->options, "preferredRecordSyntax");
 907     task->u.search.syntax = syntax ? xstrdup(syntax) : 0;
 908     elementSetName = ZOOM_options_get(r->options, "elementSetName");
 909     task->u.search.elementSetName = elementSetName
 910         ? xstrdup(elementSetName) : 0;
 911
 912     ZOOM_resultset_addref(r);
 913
 914     (q->refcount)++;
 915
 916     if (!c->async)
 917     {
 918         while (ZOOM_event(1, &c))
 919             ;
 920     }
 921     return r;
 922 }
 923
 924 ZOOM_API(void)
 925     ZOOM_resultset_sort(ZOOM_resultset r,
 926                          const char *sort_type, const char *sort_spec)
 927 {
 928     (void) ZOOM_resultset_sort1(r, sort_type, sort_spec);
 929 }
 930
 931 ZOOM_API(int)
 932     ZOOM_resultset_sort1(ZOOM_resultset r,
 933                          const char *sort_type, const char *sort_spec)
 934 {
 935     ZOOM_connection c = r->connection;
 936     ZOOM_task task;
 937     ZOOM_query newq;
 938
 939     newq = ZOOM_query_create();
 940     if (ZOOM_query_sortby(newq, sort_spec) < 0)
 941         return -1;
 942
 943     yaz_log(log_api, "%p ZOOM_resultset_sort r=%p sort_type=%s sort_spec=%s",
 944             r, r, sort_type, sort_spec);
 945     if (!c)
 946         return 0;
 947
 948     if (c->host_port && c->proto == PROTO_HTTP)
 949     {
 950         if (!c->cs)
 951         {
 952             yaz_log(log_details, "%p ZOOM_resultset_sort: no comstack", r);
 953             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 954         }
 955         else
 956         {
 957             yaz_log(log_details, "%p ZOOM_resultset_sort: prepare reconnect",
 958                     r);
 959             c->reconnect_ok = 1;
 960         }
 961     }
 962
 963     ZOOM_resultset_cache_reset(r);
 964     task = ZOOM_connection_add_task(c, ZOOM_TASK_SORT);
 965     task->u.sort.resultset = r;
 966     task->u.sort.q = newq;
 967
 968     ZOOM_resultset_addref(r);
 969
 970     if (!c->async)
 971     {
 972         while (ZOOM_event(1, &c))
 973             ;
 974     }
 975
 976     return 0;
 977 }
 978
 979 ZOOM_API(void)
 980     ZOOM_resultset_cache_reset(ZOOM_resultset r)
 981 {
 982     int i;
 983     for (i = 0; i<RECORD_HASH_SIZE; i++)
 984     {
 985         ZOOM_record_cache rc;
 986         for (rc = r->record_hash[i]; rc; rc = rc->next)
 987         {
 988             if (rc->rec.wrbuf_marc)
 989                 wrbuf_destroy(rc->rec.wrbuf_marc);
 990             if (rc->rec.wrbuf_iconv)
 991                 wrbuf_destroy(rc->rec.wrbuf_iconv);
 992             if (rc->rec.wrbuf_opac)
 993                 wrbuf_destroy(rc->rec.wrbuf_opac);
 994         }
 995         r->record_hash[i] = 0;
 996     }
 997 }
 998
 999 ZOOM_API(void)
1000     ZOOM_resultset_destroy(ZOOM_resultset r)
1001 {
1002     resultset_destroy(r);
1003 }
1004
1005 static void resultset_destroy(ZOOM_resultset r)
1006 {
1007     if (!r)
1008         return;
1009     (r->refcount)--;
1010     yaz_log(log_details, "%p ZOOM_resultset_destroy r=%p count=%d",
1011             r, r, r->refcount);
1012     if (r->refcount == 0)
1013     {
1014         ZOOM_resultset_cache_reset(r);
1015
1016         if (r->connection)
1017         {
1018             /* remove ourselves from the resultsets in connection */
1019             ZOOM_resultset *rp = &r->connection->resultsets;
1020             while (1)
1021             {
1022                 assert(*rp);   /* we must be in this list!! */
1023                 if (*rp == r)
1024                 {   /* OK, we're here - take us out of it */
1025                     *rp = (*rp)->next;
1026                     break;
1027                 }
1028                 rp = &(*rp)->next;
1029             }
1030         }
1031         ZOOM_query_destroy(r->query);
1032         ZOOM_options_destroy(r->options);
1033         odr_destroy(r->odr);
1034         xfree(r->setname);
1035         xfree(r->schema);
1036         xfree(r);
1037     }
1038 }
1039
1040 ZOOM_API(size_t)
1041     ZOOM_resultset_size(ZOOM_resultset r)
1042 {
1043     yaz_log(log_details, "ZOOM_resultset_size r=%p count=%d",
1044             r, r->size);
1045     return r->size;
1046 }
1047
1048 static void do_close(ZOOM_connection c)
1049 {
1050     if (c->cs)
1051         cs_close(c->cs);
1052     c->cs = 0;
1053     ZOOM_connection_set_mask(c, 0);
1054     c->state = STATE_IDLE;
1055 }
1056
1057 static int ZOOM_test_reconnect(ZOOM_connection c)
1058 {
1059     ZOOM_Event event;
1060
1061     if (!c->reconnect_ok)
1062         return 0;
1063     do_close(c);
1064     c->reconnect_ok = 0;
1065     c->tasks->running = 0;
1066     ZOOM_connection_insert_task(c, ZOOM_TASK_CONNECT);
1067
1068     event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
1069     ZOOM_connection_put_event(c, event);
1070
1071     return 1;
1072 }
1073
1074 static void ZOOM_resultset_retrieve(ZOOM_resultset r,
1075                                     int force_sync, int start, int count)
1076 {
1077     ZOOM_task task;
1078     ZOOM_connection c;
1079     const char *cp;
1080     const char *syntax, *elementSetName;
1081
1082     if (!r)
1083         return;
1084     yaz_log(log_details, "%p ZOOM_resultset_retrieve force_sync=%d start=%d"
1085             " count=%d", r, force_sync, start, count);
1086     c = r->connection;
1087     if (!c)
1088         return;
1089
1090     if (c->host_port && c->proto == PROTO_HTTP)
1091     {
1092         if (!c->cs)
1093         {
1094             yaz_log(log_details, "%p ZOOM_resultset_retrieve: no comstack", r);
1095             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
1096         }
1097         else
1098         {
1099             yaz_log(log_details, "%p ZOOM_resultset_retrieve: prepare "
1100                     "reconnect", r);
1101             c->reconnect_ok = 1;
1102         }
1103     }
1104     task = ZOOM_connection_add_task(c, ZOOM_TASK_RETRIEVE);
1105     task->u.retrieve.resultset = r;
1106     task->u.retrieve.start = start;
1107     task->u.retrieve.count = count;
1108
1109     syntax = ZOOM_options_get(r->options, "preferredRecordSyntax");
1110     task->u.retrieve.syntax = syntax ? xstrdup(syntax) : 0;
1111     elementSetName = ZOOM_options_get(r->options, "elementSetName");
1112     task->u.retrieve.elementSetName = elementSetName
1113         ? xstrdup(elementSetName) : 0;
1114
1115     cp = ZOOM_options_get(r->options, "schema");
1116     if (cp)
1117     {
1118         if (!r->schema || strcmp(r->schema, cp))
1119         {
1120             xfree(r->schema);
1121             r->schema = xstrdup(cp);
1122         }
1123     }
1124
1125     ZOOM_resultset_addref(r);
1126
1127     if (!r->connection->async || force_sync)
1128         while (r->connection && ZOOM_event(1, &r->connection))
1129             ;
1130 }
1131
1132 ZOOM_API(void)
1133     ZOOM_resultset_records(ZOOM_resultset r, ZOOM_record *recs,
1134                            size_t start, size_t count)
1135 {
1136     int force_present = 0;
1137
1138     if (!r)
1139         return ;
1140     yaz_log(log_api, "%p ZOOM_resultset_records r=%p start=%ld count=%ld",
1141             r, r, (long) start, (long) count);
1142     if (count && recs)
1143         force_present = 1;
1144     ZOOM_resultset_retrieve(r, force_present, start, count);
1145     if (force_present)
1146     {
1147         size_t i;
1148         for (i = 0; i< count; i++)
1149             recs[i] = ZOOM_resultset_record_immediate(r, i+start);
1150     }
1151 }
1152
1153 static void get_cert(ZOOM_connection c)
1154 {
1155     char *cert_buf;
1156     int cert_len;
1157
1158     if (cs_get_peer_certificate_x509(c->cs, &cert_buf, &cert_len))
1159     {
1160         ZOOM_connection_option_setl(c, "sslPeerCert",
1161                                     cert_buf, cert_len);
1162         xfree(cert_buf);
1163     }
1164 }
1165
1166 static zoom_ret do_connect(ZOOM_connection c)
1167 {
1168     void *add;
1169     const char *effective_host;
1170
1171     if (c->proxy)
1172         effective_host = c->proxy;
1173     else
1174         effective_host = c->host_port;
1175
1176     yaz_log(log_details, "%p do_connect effective_host=%s", c, effective_host);
1177
1178     if (c->cs)
1179         cs_close(c->cs);
1180     c->cs = cs_create_host(effective_host, 0, &add);
1181
1182     if (c->cs && c->cs->protocol == PROTO_HTTP)
1183     {
1184 #if YAZ_HAVE_XML2
1185         const char *path = 0;
1186
1187         c->proto = PROTO_HTTP;
1188         cs_get_host_args(c->host_port, &path);
1189         xfree(c->path);
1190         c->path = (char*) xmalloc(strlen(path)+2);
1191         c->path[0] = '/';
1192         strcpy(c->path+1, path);
1193 #else
1194         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_PROTOCOL, "SRW");
1195         do_close(c);
1196         return zoom_complete;
1197 #endif
1198     }
1199     if (c->cs)
1200     {
1201         int ret = cs_connect(c->cs, add);
1202         if (ret == 0)
1203         {
1204             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
1205             ZOOM_connection_put_event(c, event);
1206             get_cert(c);
1207             if (c->proto == PROTO_Z3950)
1208                 ZOOM_connection_send_init(c);
1209             else
1210             {
1211                 /* no init request for SRW .. */
1212                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
1213                 ZOOM_connection_remove_task(c);
1214                 ZOOM_connection_set_mask(c, 0);
1215                 ZOOM_connection_exec_task(c);
1216             }
1217             c->state = STATE_ESTABLISHED;
1218             return zoom_pending;
1219         }
1220         else if (ret > 0)
1221         {
1222             int mask = ZOOM_SELECT_EXCEPT;
1223             if (c->cs->io_pending & CS_WANT_WRITE)
1224                 mask += ZOOM_SELECT_WRITE;
1225             if (c->cs->io_pending & CS_WANT_READ)
1226                 mask += ZOOM_SELECT_READ;
1227             ZOOM_connection_set_mask(c, mask);
1228             c->state = STATE_CONNECTING;
1229             return zoom_pending;
1230         }
1231     }
1232     c->state = STATE_IDLE;
1233     set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
1234     return zoom_complete;
1235 }
1236
1237 static void otherInfo_attach(ZOOM_connection c, Z_APDU *a, ODR out)
1238 {
1239     int i;
1240     for (i = 0; i<200; i++)
1241     {
1242         size_t len;
1243         Odr_oid *oid;
1244         Z_OtherInformation **oi;
1245         char buf[80];
1246         const char *val;
1247         const char *cp;
1248
1249         sprintf(buf, "otherInfo%d", i);
1250         val = ZOOM_options_get(c->options, buf);
1251         if (!val)
1252             break;
1253         cp = strchr(val, ':');
1254         if (!cp)
1255             continue;
1256         len = cp - val;
1257         if (len >= sizeof(buf))
1258             len = sizeof(buf)-1;
1259         memcpy(buf, val, len);
1260         buf[len] = '\0';
1261
1262         oid = yaz_string_to_oid_odr(yaz_oid_std(), CLASS_USERINFO,
1263                                     buf, out);
1264         if (!oid)
1265             continue;
1266
1267         yaz_oi_APDU(a, &oi);
1268         yaz_oi_set_string_oid(oi, out, oid, 1, cp+1);
1269     }
1270 }
1271
1272 static int encode_APDU(ZOOM_connection c, Z_APDU *a, ODR out)
1273 {
1274     assert(a);
1275     if (c->cookie_out)
1276     {
1277         Z_OtherInformation **oi;
1278         yaz_oi_APDU(a, &oi);
1279         yaz_oi_set_string_oid(oi, out, yaz_oid_userinfo_cookie,
1280                               1, c->cookie_out);
1281     }
1282     if (c->client_IP)
1283     {
1284         Z_OtherInformation **oi;
1285         yaz_oi_APDU(a, &oi);
1286         yaz_oi_set_string_oid(oi, out, yaz_oid_userinfo_client_ip,
1287                               1, c->client_IP);
1288     }
1289     otherInfo_attach(c, a, out);
1290     if (!z_APDU(out, &a, 0, 0))
1291     {
1292         FILE *outf = fopen("/tmp/apdu.txt", "a");
1293         if (a && outf)
1294         {
1295             ODR odr_pr = odr_createmem(ODR_PRINT);
1296             fprintf(outf, "a=%p\n", a);
1297             odr_setprint(odr_pr, outf);
1298             z_APDU(odr_pr, &a, 0, 0);
1299             odr_destroy(odr_pr);
1300         }
1301         yaz_log(log_api, "%p encoding_APDU: encoding failed", c);
1302         set_ZOOM_error(c, ZOOM_ERROR_ENCODE, 0);
1303         odr_reset(out);
1304         return -1;
1305     }
1306     yaz_log(log_details, "%p encoding_APDU encoding OK", c);
1307     return 0;
1308 }
1309
1310 static zoom_ret send_APDU(ZOOM_connection c, Z_APDU *a)
1311 {
1312     ZOOM_Event event;
1313     assert(a);
1314     if (encode_APDU(c, a, c->odr_out))
1315         return zoom_complete;
1316     yaz_log(log_details, "%p send APDU type=%d", c, a->which);
1317     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1318     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
1319     ZOOM_connection_put_event(c, event);
1320     odr_reset(c->odr_out);
1321     return do_write(c);
1322 }
1323
1324 /* returns 1 if PDU was sent OK (still pending )
1325    0 if PDU was not sent OK (nothing to wait for)
1326 */
1327
1328 static zoom_ret ZOOM_connection_send_init(ZOOM_connection c)
1329 {
1330     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_initRequest);
1331     Z_InitRequest *ireq = apdu->u.initRequest;
1332     Z_IdAuthentication *auth = (Z_IdAuthentication *)
1333         odr_malloc(c->odr_out, sizeof(*auth));
1334     char *version;
1335
1336     ODR_MASK_SET(ireq->options, Z_Options_search);
1337     ODR_MASK_SET(ireq->options, Z_Options_present);
1338     ODR_MASK_SET(ireq->options, Z_Options_scan);
1339     ODR_MASK_SET(ireq->options, Z_Options_sort);
1340     ODR_MASK_SET(ireq->options, Z_Options_extendedServices);
1341     ODR_MASK_SET(ireq->options, Z_Options_namedResultSets);
1342
1343     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_1);
1344     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_2);
1345     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_3);
1346
1347     /* Index Data's Z39.50 Implementor Id is 81 */
1348     ireq->implementationId =
1349         odr_prepend(c->odr_out,
1350                     ZOOM_options_get(c->options, "implementationId"),
1351                     odr_prepend(c->odr_out, "81", ireq->implementationId));
1352
1353     ireq->implementationName =
1354         odr_prepend(c->odr_out,
1355                     ZOOM_options_get(c->options, "implementationName"),
1356                     odr_prepend(c->odr_out, "ZOOM-C",
1357                                 ireq->implementationName));
1358
1359     version = odr_strdup(c->odr_out, "$Revision: 1.148 $");
1360     if (strlen(version) > 10)   /* check for unexpanded CVS strings */
1361         version[strlen(version)-2] = '\0';
1362     ireq->implementationVersion =
1363         odr_prepend(c->odr_out,
1364                     ZOOM_options_get(c->options, "implementationVersion"),
1365                     odr_prepend(c->odr_out, &version[11],
1366                                 ireq->implementationVersion));
1367
1368     *ireq->maximumRecordSize = c->maximum_record_size;
1369     *ireq->preferredMessageSize = c->preferred_message_size;
1370
1371     if (c->group || c->password)
1372     {
1373         Z_IdPass *pass = (Z_IdPass *) odr_malloc(c->odr_out, sizeof(*pass));
1374         pass->groupId = odr_strdup_null(c->odr_out, c->group);
1375         pass->userId = odr_strdup_null(c->odr_out, c->user);
1376         pass->password = odr_strdup_null(c->odr_out, c->password);
1377         auth->which = Z_IdAuthentication_idPass;
1378         auth->u.idPass = pass;
1379         ireq->idAuthentication = auth;
1380     }
1381     else if (c->user)
1382     {
1383         auth->which = Z_IdAuthentication_open;
1384         auth->u.open = odr_strdup(c->odr_out, c->user);
1385         ireq->idAuthentication = auth;
1386     }
1387     if (c->proxy)
1388     {
1389         yaz_oi_set_string_oid(&ireq->otherInfo, c->odr_out,
1390                               yaz_oid_userinfo_proxy, 1, c->host_port);
1391     }
1392     if (c->charset || c->lang)
1393     {
1394         Z_OtherInformation **oi;
1395         Z_OtherInformationUnit *oi_unit;
1396
1397         yaz_oi_APDU(apdu, &oi);
1398
1399         if ((oi_unit = yaz_oi_update(oi, c->odr_out, NULL, 0, 0)))
1400         {
1401             ODR_MASK_SET(ireq->options, Z_Options_negotiationModel);
1402             oi_unit->which = Z_OtherInfo_externallyDefinedInfo;
1403             oi_unit->information.externallyDefinedInfo =
1404                 yaz_set_proposal_charneg_list(c->odr_out, " ",
1405                                               c->charset, c->lang, 1);
1406         }
1407     }
1408     assert(apdu);
1409     return send_APDU(c, apdu);
1410 }
1411
1412 #if YAZ_HAVE_XML2
1413 static zoom_ret send_srw(ZOOM_connection c, Z_SRW_PDU *sr)
1414 {
1415     Z_GDU *gdu;
1416     ZOOM_Event event;
1417
1418     gdu = z_get_HTTP_Request_host_path(c->odr_out, c->host_port, c->path);
1419
1420     if (c->sru_mode == zoom_sru_get)
1421     {
1422         yaz_sru_get_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1423     }
1424     else if (c->sru_mode == zoom_sru_post)
1425     {
1426         yaz_sru_post_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1427     }
1428     else if (c->sru_mode == zoom_sru_soap)
1429     {
1430         yaz_sru_soap_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1431     }
1432     if (!z_GDU(c->odr_out, &gdu, 0, 0))
1433         return zoom_complete;
1434     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1435
1436     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
1437     ZOOM_connection_put_event(c, event);
1438     odr_reset(c->odr_out);
1439     return do_write(c);
1440 }
1441 #endif
1442
1443
1444 static Z_SRW_PDU *ZOOM_srw_get_pdu(ZOOM_connection c, int type) {
1445     Z_SRW_PDU *sr = yaz_srw_get_pdu(c->odr_out, type, c->sru_version);
1446     sr->username = c->user;
1447     sr->password = c->password;
1448     return sr;
1449 }
1450
1451
1452 #if YAZ_HAVE_XML2
1453 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1454 {
1455     int i;
1456     int *start, *count;
1457     ZOOM_resultset resultset = 0;
1458     Z_SRW_PDU *sr = 0;
1459     const char *option_val = 0;
1460
1461     if (c->error)                  /* don't continue on error */
1462         return zoom_complete;
1463     assert(c->tasks);
1464     switch(c->tasks->which)
1465     {
1466     case ZOOM_TASK_SEARCH:
1467         resultset = c->tasks->u.search.resultset;
1468         resultset->setname = xstrdup("default");
1469         ZOOM_options_set(resultset->options, "setname", resultset->setname);
1470         start = &c->tasks->u.search.start;
1471         count = &c->tasks->u.search.count;
1472         break;
1473     case ZOOM_TASK_RETRIEVE:
1474         resultset = c->tasks->u.retrieve.resultset;
1475
1476         start = &c->tasks->u.retrieve.start;
1477         count = &c->tasks->u.retrieve.count;
1478
1479         if (*start >= resultset->size)
1480             return zoom_complete;
1481         if (*start + *count > resultset->size)
1482             *count = resultset->size - *start;
1483
1484         for (i = 0; i < *count; i++)
1485         {
1486             ZOOM_record rec =
1487                 record_cache_lookup(resultset, i + *start,
1488                                     c->tasks->u.retrieve.syntax,
1489                                     c->tasks->u.retrieve.elementSetName);
1490             if (!rec)
1491                 break;
1492             else
1493             {
1494                 ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
1495                 ZOOM_connection_put_event(c, event);
1496             }
1497         }
1498         *start += i;
1499         *count -= i;
1500
1501         if (*count == 0)
1502             return zoom_complete;
1503         break;
1504     default:
1505         return zoom_complete;
1506     }
1507     assert(resultset->query);
1508
1509     sr = ZOOM_srw_get_pdu(c, Z_SRW_searchRetrieve_request);
1510     if (resultset->query->z_query->which == Z_Query_type_104
1511         && resultset->query->z_query->u.type_104->which == Z_External_CQL)
1512     {
1513         sr->u.request->query_type = Z_SRW_query_type_cql;
1514         sr->u.request->query.cql =resultset->query->z_query->u.type_104->u.cql;
1515     }
1516     else if (resultset->query->z_query->which == Z_Query_type_1 &&
1517              resultset->query->z_query->u.type_1)
1518     {
1519         sr->u.request->query_type = Z_SRW_query_type_pqf;
1520         sr->u.request->query.pqf = resultset->query->query_string;
1521     }
1522     else
1523     {
1524         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
1525         return zoom_complete;
1526     }
1527     sr->u.request->startRecord = odr_intdup(c->odr_out, *start + 1);
1528     sr->u.request->maximumRecords = odr_intdup(
1529         c->odr_out, resultset->step>0 ? resultset->step : *count);
1530     sr->u.request->recordSchema = resultset->schema;
1531
1532     option_val = ZOOM_resultset_option_get(resultset, "recordPacking");
1533     if (option_val)
1534         sr->u.request->recordPacking = odr_strdup(c->odr_out, option_val);
1535
1536     option_val = ZOOM_resultset_option_get(resultset, "extraArgs");
1537     if (option_val)
1538         sr->extra_args = odr_strdup(c->odr_out, option_val);
1539     return send_srw(c, sr);
1540 }
1541 #else
1542 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1543 {
1544     return zoom_complete;
1545 }
1546 #endif
1547
1548 static zoom_ret ZOOM_connection_send_search(ZOOM_connection c)
1549 {
1550     ZOOM_resultset r;
1551     int lslb, ssub, mspn;
1552     const char *syntax;
1553     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_searchRequest);
1554     Z_SearchRequest *search_req = apdu->u.searchRequest;
1555     const char *elementSetName;
1556     const char *smallSetElementSetName;
1557     const char *mediumSetElementSetName;
1558
1559     assert(c->tasks);
1560     assert(c->tasks->which == ZOOM_TASK_SEARCH);
1561
1562     r = c->tasks->u.search.resultset;
1563
1564     yaz_log(log_details, "%p ZOOM_connection_send_search set=%p", c, r);
1565
1566     elementSetName =
1567         ZOOM_options_get(r->options, "elementSetName");
1568     smallSetElementSetName  =
1569         ZOOM_options_get(r->options, "smallSetElementSetName");
1570     mediumSetElementSetName =
1571         ZOOM_options_get(r->options, "mediumSetElementSetName");
1572
1573     if (!smallSetElementSetName)
1574         smallSetElementSetName = elementSetName;
1575
1576     if (!mediumSetElementSetName)
1577         mediumSetElementSetName = elementSetName;
1578
1579     assert(r);
1580     assert(r->query);
1581
1582     /* prepare query for the search request */
1583     search_req->query = r->query->z_query;
1584     if (!search_req->query)
1585     {
1586         set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
1587         return zoom_complete;
1588     }
1589     if (r->query->z_query->which == Z_Query_type_1 ||
1590         r->query->z_query->which == Z_Query_type_101)
1591     {
1592         const char *cp = ZOOM_options_get(r->options, "rpnCharset");
1593         if (cp)
1594         {
1595             yaz_iconv_t cd = yaz_iconv_open(cp, "UTF-8");
1596             if (cd)
1597             {
1598                 search_req->query = yaz_copy_Z_Query(search_req->query,
1599                                                      c->odr_out);
1600
1601                 yaz_query_charset_convert_rpnquery(search_req->query->u.type_1,
1602                                                    c->odr_out, cd);
1603                 yaz_iconv_close(cd);
1604             }
1605         }
1606     }
1607     search_req->databaseNames = r->databaseNames;
1608     search_req->num_databaseNames = r->num_databaseNames;
1609
1610     /* get syntax (no need to provide unless piggyback is in effect) */
1611     syntax = c->tasks->u.search.syntax;
1612
1613     lslb = ZOOM_options_get_int(r->options, "largeSetLowerBound", -1);
1614     ssub = ZOOM_options_get_int(r->options, "smallSetUpperBound", -1);
1615     mspn = ZOOM_options_get_int(r->options, "mediumSetPresentNumber", -1);
1616     if (lslb != -1 && ssub != -1 && mspn != -1)
1617     {
1618         /* So're a Z39.50 expert? Let's hope you don't do sort */
1619         *search_req->largeSetLowerBound = lslb;
1620         *search_req->smallSetUpperBound = ssub;
1621         *search_req->mediumSetPresentNumber = mspn;
1622     }
1623     else if (c->tasks->u.search.start == 0 && c->tasks->u.search.count > 0
1624              && r->piggyback && !r->r_sort_spec && !r->schema)
1625     {
1626         /* Regular piggyback - do it unless we're going to do sort */
1627         *search_req->largeSetLowerBound = 2000000000;
1628         *search_req->smallSetUpperBound = 1;
1629         *search_req->mediumSetPresentNumber =
1630             r->step>0 ? r->step : c->tasks->u.search.count;
1631     }
1632     else
1633     {
1634         /* non-piggyback. Need not provide elementsets or syntaxes .. */
1635         smallSetElementSetName = 0;
1636         mediumSetElementSetName = 0;
1637         syntax = 0;
1638     }
1639     if (smallSetElementSetName && *smallSetElementSetName)
1640     {
1641         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1642             odr_malloc(c->odr_out, sizeof(*esn));
1643
1644         esn->which = Z_ElementSetNames_generic;
1645         esn->u.generic = odr_strdup(c->odr_out, smallSetElementSetName);
1646         search_req->smallSetElementSetNames = esn;
1647     }
1648     if (mediumSetElementSetName && *mediumSetElementSetName)
1649     {
1650         Z_ElementSetNames *esn =(Z_ElementSetNames *)
1651             odr_malloc(c->odr_out, sizeof(*esn));
1652
1653         esn->which = Z_ElementSetNames_generic;
1654         esn->u.generic = odr_strdup(c->odr_out, mediumSetElementSetName);
1655         search_req->mediumSetElementSetNames = esn;
1656     }
1657     if (syntax)
1658         search_req->preferredRecordSyntax =
1659             zoom_yaz_str_to_z3950oid(c, CLASS_RECSYN, syntax);
1660
1661     if (!r->setname)
1662     {
1663         if (c->support_named_resultsets)
1664         {
1665             char setname[14];
1666             int ord;
1667             /* find the lowest unused ordinal so that we re-use
1668                result sets on the server. */
1669             for (ord = 1; ; ord++)
1670             {
1671                 ZOOM_resultset rp;
1672                 sprintf(setname, "%d", ord);
1673                 for (rp = c->resultsets; rp; rp = rp->next)
1674                     if (rp->setname && !strcmp(rp->setname, setname))
1675                         break;
1676                 if (!rp)
1677                     break;
1678             }
1679             r->setname = xstrdup(setname);
1680             yaz_log(log_details, "%p ZOOM_connection_send_search: allocating "
1681                     "set %s", c, r->setname);
1682         }
1683         else
1684         {
1685             yaz_log(log_details, "%p ZOOM_connection_send_search: using "
1686                     "default set", c);
1687             r->setname = xstrdup("default");
1688         }
1689         ZOOM_options_set(r->options, "setname", r->setname);
1690     }
1691     search_req->resultSetName = odr_strdup(c->odr_out, r->setname);
1692     return send_APDU(c, apdu);
1693 }
1694
1695 static void response_default_diag(ZOOM_connection c, Z_DefaultDiagFormat *r)
1696 {
1697     char oid_name_buf[OID_STR_MAX];
1698     const char *oid_name;
1699     char *addinfo = 0;
1700
1701     oid_name = yaz_oid_to_string_buf(r->diagnosticSetId, 0, oid_name_buf);
1702     switch (r->which)
1703     {
1704     case Z_DefaultDiagFormat_v2Addinfo:
1705         addinfo = r->u.v2Addinfo;
1706         break;
1707     case Z_DefaultDiagFormat_v3Addinfo:
1708         addinfo = r->u.v3Addinfo;
1709         break;
1710     }
1711     xfree(c->addinfo);
1712     c->addinfo = 0;
1713     set_dset_error(c, *r->condition, oid_name, addinfo, 0);
1714 }
1715
1716 static void response_diag(ZOOM_connection c, Z_DiagRec *p)
1717 {
1718     if (p->which != Z_DiagRec_defaultFormat)
1719         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1720     else
1721         response_default_diag(c, p->u.defaultFormat);
1722 }
1723
1724 ZOOM_API(ZOOM_record)
1725     ZOOM_record_clone(ZOOM_record srec)
1726 {
1727     char *buf;
1728     int size;
1729     ODR odr_enc;
1730     ZOOM_record nrec;
1731
1732     odr_enc = odr_createmem(ODR_ENCODE);
1733     if (!z_NamePlusRecord(odr_enc, &srec->npr, 0, 0))
1734         return 0;
1735     buf = odr_getbuf(odr_enc, &size, 0);
1736
1737     nrec = (ZOOM_record) xmalloc(sizeof(*nrec));
1738     nrec->odr = odr_createmem(ODR_DECODE);
1739     nrec->wrbuf_marc = 0;
1740     nrec->wrbuf_iconv = 0;
1741     nrec->wrbuf_opac = 0;
1742     odr_setbuf(nrec->odr, buf, size, 0);
1743     z_NamePlusRecord(nrec->odr, &nrec->npr, 0, 0);
1744
1745     nrec->schema = odr_strdup_null(nrec->odr, srec->schema);
1746     nrec->diag_uri = odr_strdup_null(nrec->odr, srec->diag_uri);
1747     nrec->diag_message = odr_strdup_null(nrec->odr, srec->diag_message);
1748     nrec->diag_details = odr_strdup_null(nrec->odr, srec->diag_details);
1749     nrec->diag_set = odr_strdup_null(nrec->odr, srec->diag_set);
1750     odr_destroy(odr_enc);
1751     return nrec;
1752 }
1753
1754 ZOOM_API(ZOOM_record)
1755     ZOOM_resultset_record_immediate(ZOOM_resultset s,size_t pos)
1756 {
1757     const char *syntax =
1758         ZOOM_options_get(s->options, "preferredRecordSyntax");
1759     const char *elementSetName =
1760         ZOOM_options_get(s->options, "elementSetName");
1761
1762     return record_cache_lookup(s, pos, syntax, elementSetName);
1763 }
1764
1765 ZOOM_API(ZOOM_record)
1766     ZOOM_resultset_record(ZOOM_resultset r, size_t pos)
1767 {
1768     ZOOM_record rec = ZOOM_resultset_record_immediate(r, pos);
1769
1770     if (!rec)
1771     {
1772         /*
1773          * MIKE: I think force_sync should always be zero, but I don't
1774          * want to make this change until I get the go-ahead from
1775          * Adam, in case something depends on the old synchronous
1776          * behaviour.
1777          */
1778         int force_sync = 1;
1779         if (getenv("ZOOM_RECORD_NO_FORCE_SYNC")) force_sync = 0;
1780         ZOOM_resultset_retrieve(r, force_sync, pos, 1);
1781         rec = ZOOM_resultset_record_immediate(r, pos);
1782     }
1783     return rec;
1784 }
1785
1786 ZOOM_API(void)
1787     ZOOM_record_destroy(ZOOM_record rec)
1788 {
1789     if (!rec)
1790         return;
1791     if (rec->wrbuf_marc)
1792         wrbuf_destroy(rec->wrbuf_marc);
1793     if (rec->wrbuf_iconv)
1794         wrbuf_destroy(rec->wrbuf_iconv);
1795     if (rec->wrbuf_opac)
1796         wrbuf_destroy(rec->wrbuf_opac);
1797     odr_destroy(rec->odr);
1798     xfree(rec);
1799 }
1800
1801 static const char *marc_iconv_return(ZOOM_record rec, int marc_type,
1802                                      int *len,
1803                                      const char *buf, int sz,
1804                                      const char *record_charset)
1805 {
1806     char to[40];
1807     char from[40];
1808     yaz_iconv_t cd = 0;
1809     yaz_marc_t mt = yaz_marc_create();
1810
1811     *from = '\0';
1812     strcpy(to, "UTF-8");
1813     if (record_charset && *record_charset)
1814     {
1815         /* Use "from,to" or just "from" */
1816         const char *cp = strchr(record_charset, ',');
1817         int clen = strlen(record_charset);
1818         if (cp && cp[1])
1819         {
1820             strncpy( to, cp+1, sizeof(to)-1);
1821             to[sizeof(to)-1] = '\0';
1822             clen = cp - record_charset;
1823         }
1824         if (clen > sizeof(from)-1)
1825             clen = sizeof(from)-1;
1826
1827         if (clen)
1828             strncpy(from, record_charset, clen);
1829         from[clen] = '\0';
1830     }
1831
1832     if (*from && *to)
1833     {
1834         cd = yaz_iconv_open(to, from);
1835         yaz_marc_iconv(mt, cd);
1836     }
1837
1838     yaz_marc_xml(mt, marc_type);
1839     if (!rec->wrbuf_marc)
1840         rec->wrbuf_marc = wrbuf_alloc();
1841     wrbuf_rewind(rec->wrbuf_marc);
1842     if (yaz_marc_decode_wrbuf(mt, buf, sz, rec->wrbuf_marc) > 0)
1843     {
1844         yaz_marc_destroy(mt);
1845         if (cd)
1846             yaz_iconv_close(cd);
1847         if (len)
1848             *len = wrbuf_len(rec->wrbuf_marc);
1849         return wrbuf_cstr(rec->wrbuf_marc);
1850     }
1851     yaz_marc_destroy(mt);
1852     if (cd)
1853         yaz_iconv_close(cd);
1854     return 0;
1855 }
1856
1857 static const char *record_iconv_return(ZOOM_record rec, int *len,
1858                                        const char *buf, int sz,
1859                                        const char *record_charset)
1860 {
1861     char to[40];
1862     char from[40];
1863     yaz_iconv_t cd = 0;
1864
1865     *from = '\0';
1866     strcpy(to, "UTF-8");
1867
1868     if (record_charset && *record_charset)
1869     {
1870         /* Use "from,to" or just "from" */
1871         const char *cp = strchr(record_charset, ',');
1872         int clen = strlen(record_charset);
1873         if (cp && cp[1])
1874         {
1875             strncpy( to, cp+1, sizeof(to)-1);
1876             to[sizeof(to)-1] = '\0';
1877             clen = cp - record_charset;
1878         }
1879         if (clen > sizeof(from)-1)
1880             clen = sizeof(from)-1;
1881
1882         if (clen)
1883             strncpy(from, record_charset, clen);
1884         from[clen] = '\0';
1885     }
1886
1887     if (*from && *to && (cd = yaz_iconv_open(to, from)))
1888     {
1889         if (!rec->wrbuf_iconv)
1890             rec->wrbuf_iconv = wrbuf_alloc();
1891
1892         wrbuf_rewind(rec->wrbuf_iconv);
1893
1894         wrbuf_iconv_write(rec->wrbuf_iconv, cd, buf, sz);
1895         wrbuf_iconv_reset(rec->wrbuf_iconv, cd);
1896
1897         buf = wrbuf_cstr(rec->wrbuf_iconv);
1898         sz = wrbuf_len(rec->wrbuf_iconv);
1899         yaz_iconv_close(cd);
1900     }
1901     if (len)
1902         *len = sz;
1903     return buf;
1904 }
1905
1906
1907 ZOOM_API(int)
1908     ZOOM_record_error(ZOOM_record rec, const char **cp,
1909                       const char **addinfo, const char **diagset)
1910 {
1911     Z_NamePlusRecord *npr;
1912
1913     if (!rec)
1914         return 0;
1915
1916     npr = rec->npr;
1917     if (rec->diag_uri)
1918     {
1919         if (cp)
1920             *cp = rec->diag_message;
1921         if (addinfo)
1922             *addinfo = rec->diag_details;
1923         if (diagset)
1924             *diagset = rec->diag_set;
1925         return uri_to_code(rec->diag_uri);
1926     }
1927     if (npr && npr->which == Z_NamePlusRecord_surrogateDiagnostic)
1928     {
1929         Z_DiagRec *diag_rec = npr->u.surrogateDiagnostic;
1930         int error = YAZ_BIB1_UNSPECIFIED_ERROR;
1931         const char *add = 0;
1932
1933         if (diag_rec->which == Z_DiagRec_defaultFormat)
1934         {
1935             Z_DefaultDiagFormat *ddf = diag_rec->u.defaultFormat;
1936             oid_class oclass;
1937
1938             error = *ddf->condition;
1939             switch (ddf->which)
1940             {
1941             case Z_DefaultDiagFormat_v2Addinfo:
1942                 add = ddf->u.v2Addinfo;
1943                 break;
1944             case Z_DefaultDiagFormat_v3Addinfo:
1945                 add = ddf->u.v3Addinfo;
1946                 break;
1947             }
1948             if (diagset)
1949                 *diagset =
1950                     yaz_oid_to_string(yaz_oid_std(),
1951                                       ddf->diagnosticSetId, &oclass);
1952         }
1953         else
1954         {
1955             if (diagset)
1956                 *diagset = "Bib-1";
1957         }
1958         if (addinfo)
1959             *addinfo = add ? add : "";
1960         if (cp)
1961             *cp = diagbib1_str(error);
1962         return error;
1963     }
1964     return 0;
1965 }
1966
1967 ZOOM_API(const char *)
1968     ZOOM_record_get(ZOOM_record rec, const char *type_spec, int *len)
1969 {
1970     char type[40];
1971     char charset[40];
1972     char xpath[512];
1973     const char *cp;
1974     int i;
1975     Z_NamePlusRecord *npr;
1976
1977     if (len)
1978         *len = 0; /* default return */
1979
1980     if (!rec)
1981         return 0;
1982     npr = rec->npr;
1983     if (!npr)
1984         return 0;
1985
1986     cp = type_spec;
1987     for (i = 0; cp[i] && i < sizeof(type)-1; i++)
1988     {
1989         if (cp[i] == ';' || cp[i] == ' ')
1990             break;
1991         type[i] = cp[i];
1992     }
1993     type[i] = '\0';
1994     charset[0] = '\0';
1995     while (type_spec[i] == ';')
1996     {
1997         i++;
1998         while (type_spec[i] == ' ')
1999             i++;
2000         if (!strncmp(type_spec+i, "charset=", 8))
2001         {
2002             int j = 0;
2003             i = i + 8; /* skip charset= */
2004             for (j = 0; type_spec[i]  && j < sizeof(charset)-1; i++, j++)
2005             {
2006                 if (type_spec[i] == ';' || type_spec[i] == ' ')
2007                     break;
2008                 charset[j] = cp[i];
2009             }
2010             charset[j] = '\0';
2011         }
2012         else if (!strncmp(type_spec+i, "xpath=", 6))
2013         {
2014             int j = 0;
2015             i = i + 6;
2016             for (j = 0; type_spec[i] && j < sizeof(xpath)-1; i++, j++)
2017                 xpath[j] = cp[i];
2018             xpath[j] = '\0';
2019         }
2020         while (type_spec[i] == ' ')
2021             i++;
2022     }
2023     if (!strcmp(type, "database"))
2024     {
2025         if (len)
2026             *len = (npr->databaseName ? strlen(npr->databaseName) : 0);
2027         return npr->databaseName;
2028     }
2029     else if (!strcmp(type, "schema"))
2030     {
2031         if (len)
2032             *len = rec->schema ? strlen(rec->schema) : 0;
2033         return rec->schema;
2034     }
2035     else if (!strcmp(type, "syntax"))
2036     {
2037         const char *desc = 0;
2038         if (npr->which == Z_NamePlusRecord_databaseRecord)
2039         {
2040             Z_External *r = (Z_External *) npr->u.databaseRecord;
2041             desc = yaz_oid_to_string(yaz_oid_std(), r->direct_reference, 0);
2042         }
2043         if (!desc)
2044             desc = "none";
2045         if (len)
2046             *len = strlen(desc);
2047         return desc;
2048     }
2049     if (npr->which != Z_NamePlusRecord_databaseRecord)
2050         return 0;
2051
2052     /* from now on - we have a database record .. */
2053     if (!strcmp(type, "render"))
2054     {
2055         Z_External *r = (Z_External *) npr->u.databaseRecord;
2056         const Odr_oid *oid = r->direct_reference;
2057
2058         /* render bibliographic record .. */
2059         if (r->which == Z_External_OPAC)
2060         {
2061             r = r->u.opac->bibliographicRecord;
2062             if (!r)
2063                 return 0;
2064             oid = r->direct_reference;
2065         }
2066         if (r->which == Z_External_sutrs)
2067             return record_iconv_return(rec, len,
2068                                        (char*) r->u.sutrs->buf,
2069                                        r->u.sutrs->len,
2070                                        charset);
2071         else if (r->which == Z_External_octet)
2072         {
2073             if (yaz_oid_is_iso2709(oid))
2074             {
2075                 const char *ret_buf = marc_iconv_return(
2076                     rec, YAZ_MARC_LINE, len,
2077                     (const char *) r->u.octet_aligned->buf,
2078                     r->u.octet_aligned->len,
2079                     charset);
2080                 if (ret_buf)
2081                     return ret_buf;
2082             }
2083             return record_iconv_return(rec, len,
2084                                        (const char *) r->u.octet_aligned->buf,
2085                                        r->u.octet_aligned->len,
2086                                        charset);
2087         }
2088         else if (r->which == Z_External_grs1)
2089         {
2090             if (!rec->wrbuf_marc)
2091                 rec->wrbuf_marc = wrbuf_alloc();
2092             wrbuf_rewind(rec->wrbuf_marc);
2093             yaz_display_grs1(rec->wrbuf_marc, r->u.grs1, 0);
2094             return record_iconv_return(rec, len,
2095                                        wrbuf_buf(rec->wrbuf_marc),
2096                                        wrbuf_len(rec->wrbuf_marc),
2097                                        charset);
2098         }
2099         return 0;
2100     }
2101     else if (!strcmp(type, "xml"))
2102     {
2103         Z_External *r = (Z_External *) npr->u.databaseRecord;
2104         const Odr_oid *oid = r->direct_reference;
2105
2106         /* render bibliographic record .. */
2107         if (r->which == Z_External_OPAC)
2108         {
2109             r = r->u.opac->bibliographicRecord;
2110             if (!r)
2111                 return 0;
2112             oid = r->direct_reference;
2113         }
2114
2115         if (r->which == Z_External_sutrs)
2116             return record_iconv_return(rec, len,
2117                                        (const char *) r->u.sutrs->buf,
2118                                        r->u.sutrs->len,
2119                                        charset);
2120         else if (r->which == Z_External_octet)
2121         {
2122             int marc_decode_type = YAZ_MARC_MARCXML;
2123             if (yaz_oid_is_iso2709(oid))
2124             {
2125                 const char *ret_buf = marc_iconv_return(
2126                     rec, marc_decode_type, len,
2127                     (const char *) r->u.octet_aligned->buf,
2128                     r->u.octet_aligned->len,
2129                     charset);
2130                 if (ret_buf)
2131                     return ret_buf;
2132             }
2133             return record_iconv_return(rec, len,
2134                                        (const char *) r->u.octet_aligned->buf,
2135                                        r->u.octet_aligned->len,
2136                                        charset);
2137         }
2138         else if (r->which == Z_External_grs1)
2139         {
2140             if (len) *len = 5;
2141             return "GRS-1";
2142         }
2143         return 0;
2144     }
2145     else if (!strcmp(type, "raw"))
2146     {
2147         Z_External *r = (Z_External *) npr->u.databaseRecord;
2148
2149         if (r->which == Z_External_sutrs)
2150         {
2151             if (len) *len = r->u.sutrs->len;
2152             return (const char *) r->u.sutrs->buf;
2153         }
2154         else if (r->which == Z_External_octet)
2155         {
2156             if (len) *len = r->u.octet_aligned->len;
2157             return (const char *) r->u.octet_aligned->buf;
2158         }
2159         else /* grs-1, explain, OPAC, ... */
2160         {
2161             if (len) *len = -1;
2162             return (const char *) npr->u.databaseRecord;
2163         }
2164         return 0;
2165     }
2166     else if (!strcmp (type, "ext"))
2167     {
2168         if (len) *len = -1;
2169         return (const char *) npr->u.databaseRecord;
2170     }
2171     else if (!strcmp (type, "opac"))
2172
2173     {
2174         Z_External *r = (Z_External *) npr->u.databaseRecord;
2175         if (r->which == Z_External_OPAC)
2176         {
2177             if (!rec->wrbuf_opac)
2178                 rec->wrbuf_opac = wrbuf_alloc();
2179             wrbuf_rewind(rec->wrbuf_opac);
2180             yaz_display_OPAC(rec->wrbuf_opac, r->u.opac, 0);
2181             return record_iconv_return(rec, len,
2182                                        wrbuf_buf(rec->wrbuf_opac),
2183                                        wrbuf_len(rec->wrbuf_opac),
2184                                        charset);
2185         }
2186     }
2187     return 0;
2188 }
2189
2190 static int strcmp_null(const char *v1, const char *v2)
2191 {
2192     if (!v1 && !v2)
2193         return 0;
2194     if (!v1 || !v2)
2195         return -1;
2196     return strcmp(v1, v2);
2197 }
2198
2199 static size_t record_hash(int pos)
2200 {
2201     if (pos < 0)
2202         pos = 0;
2203     return pos % RECORD_HASH_SIZE;
2204 }
2205
2206 static void record_cache_add(ZOOM_resultset r, Z_NamePlusRecord *npr,
2207                              int pos,
2208                              const char *syntax, const char *elementSetName,
2209                              const char *schema,
2210                              Z_SRW_diagnostic *diag)
2211 {
2212     ZOOM_record_cache rc = 0;
2213
2214     ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
2215     ZOOM_connection_put_event(r->connection, event);
2216
2217     for (rc = r->record_hash[record_hash(pos)]; rc; rc = rc->next)
2218     {
2219         if (pos == rc->pos
2220             && strcmp_null(r->schema, rc->schema) == 0
2221             && strcmp_null(elementSetName,rc->elementSetName) == 0
2222             && strcmp_null(syntax, rc->syntax) == 0)
2223             break;
2224     }
2225     if (!rc)
2226     {
2227         rc = (ZOOM_record_cache) odr_malloc(r->odr, sizeof(*rc));
2228         rc->rec.odr = 0;
2229         rc->rec.wrbuf_marc = 0;
2230         rc->rec.wrbuf_iconv = 0;
2231         rc->rec.wrbuf_opac = 0;
2232         rc->elementSetName = odr_strdup_null(r->odr, elementSetName);
2233
2234         rc->syntax = odr_strdup_null(r->odr, syntax);
2235
2236         rc->schema = odr_strdup_null(r->odr, r->schema);
2237
2238         rc->pos = pos;
2239         rc->next = r->record_hash[record_hash(pos)];
2240         r->record_hash[record_hash(pos)] = rc;
2241     }
2242     rc->rec.npr = npr;
2243     rc->rec.schema = odr_strdup_null(r->odr, schema);
2244     rc->rec.diag_set = 0;
2245     rc->rec.diag_uri = 0;
2246     rc->rec.diag_details = 0;
2247     if (diag)
2248     {
2249         if (diag->uri)
2250         {
2251             char *cp;
2252             rc->rec.diag_set = odr_strdup(r->odr, diag->uri);
2253             if ((cp = strrchr(rc->rec.diag_set, '/')))
2254                 *cp = '\0';
2255             rc->rec.diag_uri = odr_strdup(r->odr, diag->uri);
2256         }
2257         rc->rec.diag_message = odr_strdup_null(r->odr, diag->message);
2258         rc->rec.diag_details = odr_strdup_null(r->odr, diag->details);
2259     }
2260 }
2261
2262 static ZOOM_record record_cache_lookup(ZOOM_resultset r, int pos,
2263                                        const char *syntax,
2264                                        const char *elementSetName)
2265 {
2266     ZOOM_record_cache rc;
2267
2268     for (rc = r->record_hash[record_hash(pos)]; rc; rc = rc->next)
2269     {
2270         if (pos == rc->pos)
2271         {
2272             if (strcmp_null(r->schema, rc->schema))
2273                 continue;
2274             if (strcmp_null(elementSetName,rc->elementSetName))
2275                 continue;
2276             if (strcmp_null(syntax, rc->syntax))
2277                 continue;
2278             return &rc->rec;
2279         }
2280     }
2281     return 0;
2282 }
2283
2284 static void handle_records(ZOOM_connection c, Z_Records *sr,
2285                            int present_phase)
2286 {
2287     ZOOM_resultset resultset;
2288     int *start, *count;
2289     const char *syntax = 0, *elementSetName = 0;
2290
2291     if (!c->tasks)
2292         return ;
2293     switch (c->tasks->which)
2294     {
2295     case ZOOM_TASK_SEARCH:
2296         resultset = c->tasks->u.search.resultset;
2297         start = &c->tasks->u.search.start;
2298         count = &c->tasks->u.search.count;
2299         syntax = c->tasks->u.search.syntax;
2300         elementSetName = c->tasks->u.search.elementSetName;
2301         break;
2302     case ZOOM_TASK_RETRIEVE:
2303         resultset = c->tasks->u.retrieve.resultset;
2304         start = &c->tasks->u.retrieve.start;
2305         count = &c->tasks->u.retrieve.count;
2306         syntax = c->tasks->u.retrieve.syntax;
2307         elementSetName = c->tasks->u.retrieve.elementSetName;
2308         break;
2309     default:
2310         return;
2311     }
2312     if (sr && sr->which == Z_Records_NSD)
2313         response_default_diag(c, sr->u.nonSurrogateDiagnostic);
2314     else if (sr && sr->which == Z_Records_multipleNSD)
2315     {
2316         if (sr->u.multipleNonSurDiagnostics->num_diagRecs >= 1)
2317             response_diag(c, sr->u.multipleNonSurDiagnostics->diagRecs[0]);
2318         else
2319             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2320     }
2321     else
2322     {
2323         if (*count + *start > resultset->size)
2324             *count = resultset->size - *start;
2325         if (*count < 0)
2326             *count = 0;
2327         if (sr && sr->which == Z_Records_DBOSD)
2328         {
2329             int i;
2330             NMEM nmem = odr_extract_mem(c->odr_in);
2331             Z_NamePlusRecordList *p =
2332                 sr->u.databaseOrSurDiagnostics;
2333             for (i = 0; i<p->num_records; i++)
2334             {
2335                 record_cache_add(resultset, p->records[i], i + *start,
2336                                  syntax, elementSetName,
2337                                  elementSetName, 0);
2338             }
2339             *count -= i;
2340             if (*count < 0)
2341                 *count = 0;
2342             *start += i;
2343             yaz_log(log_details,
2344                     "handle_records resultset=%p start=%d count=%d",
2345                     resultset, *start, *count);
2346
2347             /* transfer our response to search_nmem .. we need it later */
2348             nmem_transfer(odr_getmem(resultset->odr), nmem);
2349             nmem_destroy(nmem);
2350             if (present_phase && p->num_records == 0)
2351             {
2352                 /* present response and we didn't get any records! */
2353                 Z_NamePlusRecord *myrec =
2354                     zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2355                 record_cache_add(resultset, myrec, *start,
2356                                  syntax, elementSetName, 0, 0);
2357             }
2358         }
2359         else if (present_phase)
2360         {
2361             /* present response and we didn't get any records! */
2362             Z_NamePlusRecord *myrec =
2363                 zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2364             record_cache_add(resultset, myrec, *start, syntax, elementSetName,
2365                              0, 0);
2366         }
2367     }
2368 }
2369
2370 static void handle_present_response(ZOOM_connection c, Z_PresentResponse *pr)
2371 {
2372     handle_records(c, pr->records, 1);
2373 }
2374
2375 static void handle_queryExpressionTerm(ZOOM_options opt, const char *name,
2376                                        Z_Term *term)
2377 {
2378     switch (term->which)
2379     {
2380     case Z_Term_general:
2381         ZOOM_options_setl(opt, name,
2382                           (const char *)(term->u.general->buf),
2383                           term->u.general->len);
2384         break;
2385     case Z_Term_characterString:
2386         ZOOM_options_set(opt, name, term->u.characterString);
2387         break;
2388     case Z_Term_numeric:
2389         ZOOM_options_set_int(opt, name, *term->u.numeric);
2390         break;
2391     }
2392 }
2393
2394 static void handle_queryExpression(ZOOM_options opt, const char *name,
2395                                    Z_QueryExpression *exp)
2396 {
2397     char opt_name[80];
2398
2399     switch (exp->which)
2400     {
2401     case Z_QueryExpression_term:
2402         if (exp->u.term && exp->u.term->queryTerm)
2403         {
2404             sprintf(opt_name, "%s.term", name);
2405             handle_queryExpressionTerm(opt, opt_name, exp->u.term->queryTerm);
2406         }
2407         break;
2408     case Z_QueryExpression_query:
2409         break;
2410     }
2411 }
2412
2413 static void handle_searchResult(ZOOM_connection c, ZOOM_resultset resultset,
2414                                 Z_OtherInformation *o)
2415 {
2416     int i;
2417     for (i = 0; o && i < o->num_elements; i++)
2418     {
2419         if (o->list[i]->which == Z_OtherInfo_externallyDefinedInfo)
2420         {
2421             Z_External *ext = o->list[i]->information.externallyDefinedInfo;
2422
2423             if (ext->which == Z_External_searchResult1)
2424             {
2425                 int j;
2426                 Z_SearchInfoReport *sr = ext->u.searchResult1;
2427
2428                 if (sr->num)
2429                     ZOOM_options_set_int(
2430                         resultset->options, "searchresult.size", sr->num);
2431
2432                 for (j = 0; j < sr->num; j++)
2433                 {
2434                     Z_SearchInfoReport_s *ent =
2435                         ext->u.searchResult1->elements[j];
2436                     char pref[80];
2437
2438                     sprintf(pref, "searchresult.%d", j);
2439
2440                     if (ent->subqueryId)
2441                     {
2442                         char opt_name[80];
2443                         sprintf(opt_name, "%s.id", pref);
2444                         ZOOM_options_set(resultset->options, opt_name,
2445                                          ent->subqueryId);
2446                     }
2447                     if (ent->subqueryExpression)
2448                     {
2449                         char opt_name[80];
2450                         sprintf(opt_name, "%s.subquery", pref);
2451                         handle_queryExpression(resultset->options, opt_name,
2452                                                ent->subqueryExpression);
2453                     }
2454                     if (ent->subqueryInterpretation)
2455                     {
2456                         char opt_name[80];
2457                         sprintf(opt_name, "%s.interpretation", pref);
2458                         handle_queryExpression(resultset->options, opt_name,
2459                                                ent->subqueryInterpretation);
2460                     }
2461                     if (ent->subqueryRecommendation)
2462                     {
2463                         char opt_name[80];
2464                         sprintf(opt_name, "%s.recommendation", pref);
2465                         handle_queryExpression(resultset->options, opt_name,
2466                                                ent->subqueryRecommendation);
2467                     }
2468                     if (ent->subqueryCount)
2469                     {
2470                         char opt_name[80];
2471                         sprintf(opt_name, "%s.count", pref);
2472                         ZOOM_options_set_int(resultset->options, opt_name,
2473                                              *ent->subqueryCount);
2474                     }
2475                 }
2476             }
2477         }
2478     }
2479 }
2480
2481 static void handle_search_response(ZOOM_connection c, Z_SearchResponse *sr)
2482 {
2483     ZOOM_resultset resultset;
2484     ZOOM_Event event;
2485
2486     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
2487         return ;
2488
2489     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
2490     ZOOM_connection_put_event(c, event);
2491
2492     resultset = c->tasks->u.search.resultset;
2493
2494     if (sr->resultSetStatus)
2495     {
2496         ZOOM_options_set_int(resultset->options, "resultSetStatus",
2497                              *sr->resultSetStatus);
2498     }
2499     if (sr->presentStatus)
2500     {
2501         ZOOM_options_set_int(resultset->options, "presentStatus",
2502                              *sr->presentStatus);
2503     }
2504     handle_searchResult(c, resultset, sr->additionalSearchInfo);
2505
2506     resultset->size = *sr->resultCount;
2507     handle_records(c, sr->records, 0);
2508 }
2509
2510 static void sort_response(ZOOM_connection c, Z_SortResponse *res)
2511 {
2512     if (res->diagnostics && res->num_diagnostics > 0)
2513         response_diag(c, res->diagnostics[0]);
2514 }
2515
2516 static int scan_response(ZOOM_connection c, Z_ScanResponse *res)
2517 {
2518     NMEM nmem = odr_extract_mem(c->odr_in);
2519     ZOOM_scanset scan;
2520
2521     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
2522         return 0;
2523     scan = c->tasks->u.scan.scan;
2524
2525     if (res->entries && res->entries->nonsurrogateDiagnostics)
2526         response_diag(c, res->entries->nonsurrogateDiagnostics[0]);
2527     scan->scan_response = res;
2528     scan->srw_scan_response = 0;
2529     nmem_transfer(odr_getmem(scan->odr), nmem);
2530     if (res->stepSize)
2531         ZOOM_options_set_int(scan->options, "stepSize", *res->stepSize);
2532     if (res->positionOfTerm)
2533         ZOOM_options_set_int(scan->options, "position", *res->positionOfTerm);
2534     if (res->scanStatus)
2535         ZOOM_options_set_int(scan->options, "scanStatus", *res->scanStatus);
2536     if (res->numberOfEntriesReturned)
2537         ZOOM_options_set_int(scan->options, "number",
2538                              *res->numberOfEntriesReturned);
2539     nmem_destroy(nmem);
2540     return 1;
2541 }
2542
2543 static zoom_ret send_sort(ZOOM_connection c,
2544                           ZOOM_resultset resultset)
2545 {
2546     if (c->error)
2547         resultset->r_sort_spec = 0;
2548     if (resultset->r_sort_spec)
2549     {
2550         Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_sortRequest);
2551         Z_SortRequest *req = apdu->u.sortRequest;
2552
2553         req->num_inputResultSetNames = 1;
2554         req->inputResultSetNames = (Z_InternationalString **)
2555             odr_malloc(c->odr_out, sizeof(*req->inputResultSetNames));
2556         req->inputResultSetNames[0] =
2557             odr_strdup(c->odr_out, resultset->setname);
2558         req->sortedResultSetName = odr_strdup(c->odr_out, resultset->setname);
2559         req->sortSequence = resultset->r_sort_spec;
2560         resultset->r_sort_spec = 0;
2561         return send_APDU(c, apdu);
2562     }
2563     return zoom_complete;
2564 }
2565
2566 static zoom_ret send_present(ZOOM_connection c)
2567 {
2568     Z_APDU *apdu = 0;
2569     Z_PresentRequest *req = 0;
2570     int i = 0;
2571     const char *syntax = 0;
2572     const char *elementSetName = 0;
2573     ZOOM_resultset  resultset;
2574     int *start, *count;
2575
2576     if (!c->tasks)
2577     {
2578         yaz_log(log_details, "%p send_present no tasks", c);
2579         return zoom_complete;
2580     }
2581
2582     switch (c->tasks->which)
2583     {
2584     case ZOOM_TASK_SEARCH:
2585         resultset = c->tasks->u.search.resultset;
2586         start = &c->tasks->u.search.start;
2587         count = &c->tasks->u.search.count;
2588         syntax = c->tasks->u.search.syntax;
2589         elementSetName = c->tasks->u.search.elementSetName;
2590         break;
2591     case ZOOM_TASK_RETRIEVE:
2592         resultset = c->tasks->u.retrieve.resultset;
2593         start = &c->tasks->u.retrieve.start;
2594         count = &c->tasks->u.retrieve.count;
2595         syntax = c->tasks->u.retrieve.syntax;
2596         elementSetName = c->tasks->u.retrieve.elementSetName;
2597         break;
2598     default:
2599         return zoom_complete;
2600     }
2601     yaz_log(log_details, "%p send_present start=%d count=%d",
2602             c, *start, *count);
2603
2604     if (*start < 0 || *count < 0 || *start + *count > resultset->size)
2605     {
2606         set_dset_error(c, YAZ_BIB1_PRESENT_REQUEST_OUT_OF_RANGE, "Bib-1",
2607                        "", 0);
2608     }
2609     if (c->error)                  /* don't continue on error */
2610         return zoom_complete;
2611     yaz_log(log_details, "send_present resultset=%p start=%d count=%d",
2612             resultset, *start, *count);
2613
2614     for (i = 0; i < *count; i++)
2615     {
2616         ZOOM_record rec =
2617             record_cache_lookup(resultset, i + *start, syntax, elementSetName);
2618         if (!rec)
2619             break;
2620         else
2621         {
2622             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
2623             ZOOM_connection_put_event(c, event);
2624         }
2625     }
2626     *start += i;
2627     *count -= i;
2628
2629     if (*count == 0)
2630     {
2631         yaz_log(log_details, "%p send_present skip=%d no more to fetch", c, i);
2632         return zoom_complete;
2633     }
2634
2635     apdu = zget_APDU(c->odr_out, Z_APDU_presentRequest);
2636     req = apdu->u.presentRequest;
2637
2638     if (i)
2639         yaz_log(log_details, "%p send_present skip=%d", c, i);
2640
2641     *req->resultSetStartPoint = *start + 1;
2642     *req->numberOfRecordsRequested = resultset->step>0 ?
2643         resultset->step : *count;
2644     if (*req->numberOfRecordsRequested + *start > resultset->size)
2645         *req->numberOfRecordsRequested = resultset->size - *start;
2646     assert(*req->numberOfRecordsRequested > 0);
2647
2648     if (syntax && *syntax)
2649         req->preferredRecordSyntax =
2650             zoom_yaz_str_to_z3950oid(c, CLASS_RECSYN, syntax);
2651
2652     if (resultset->schema && *resultset->schema)
2653     {
2654         Z_RecordComposition *compo = (Z_RecordComposition *)
2655             odr_malloc(c->odr_out, sizeof(*compo));
2656
2657         req->recordComposition = compo;
2658         compo->which = Z_RecordComp_complex;
2659         compo->u.complex = (Z_CompSpec *)
2660             odr_malloc(c->odr_out, sizeof(*compo->u.complex));
2661         compo->u.complex->selectAlternativeSyntax = (bool_t *)
2662             odr_malloc(c->odr_out, sizeof(bool_t));
2663         *compo->u.complex->selectAlternativeSyntax = 0;
2664
2665         compo->u.complex->generic = (Z_Specification *)
2666             odr_malloc(c->odr_out, sizeof(*compo->u.complex->generic));
2667
2668         compo->u.complex->generic->which = Z_Schema_oid;
2669         compo->u.complex->generic->schema.oid = (Odr_oid *)
2670             zoom_yaz_str_to_z3950oid (c, CLASS_SCHEMA, resultset->schema);
2671
2672         if (!compo->u.complex->generic->schema.oid)
2673         {
2674             /* OID wasn't a schema! Try record syntax instead. */
2675
2676             compo->u.complex->generic->schema.oid = (Odr_oid *)
2677                 zoom_yaz_str_to_z3950oid (c, CLASS_RECSYN, resultset->schema);
2678         }
2679         if (elementSetName && *elementSetName)
2680         {
2681             compo->u.complex->generic->elementSpec = (Z_ElementSpec *)
2682                 odr_malloc(c->odr_out, sizeof(Z_ElementSpec));
2683             compo->u.complex->generic->elementSpec->which =
2684                 Z_ElementSpec_elementSetName;
2685             compo->u.complex->generic->elementSpec->u.elementSetName =
2686                 odr_strdup(c->odr_out, elementSetName);
2687         }
2688         else
2689             compo->u.complex->generic->elementSpec = 0;
2690         compo->u.complex->num_dbSpecific = 0;
2691         compo->u.complex->dbSpecific = 0;
2692         compo->u.complex->num_recordSyntax = 0;
2693         compo->u.complex->recordSyntax = 0;
2694     }
2695     else if (elementSetName && *elementSetName)
2696     {
2697         Z_ElementSetNames *esn = (Z_ElementSetNames *)
2698             odr_malloc(c->odr_out, sizeof(*esn));
2699         Z_RecordComposition *compo = (Z_RecordComposition *)
2700             odr_malloc(c->odr_out, sizeof(*compo));
2701
2702         esn->which = Z_ElementSetNames_generic;
2703         esn->u.generic = odr_strdup(c->odr_out, elementSetName);
2704         compo->which = Z_RecordComp_simple;
2705         compo->u.simple = esn;
2706         req->recordComposition = compo;
2707     }
2708     req->resultSetId = odr_strdup(c->odr_out, resultset->setname);
2709     return send_APDU(c, apdu);
2710 }
2711
2712 ZOOM_API(ZOOM_scanset)
2713     ZOOM_connection_scan(ZOOM_connection c, const char *start)
2714 {
2715     ZOOM_scanset s;
2716     ZOOM_query q = ZOOM_query_create();
2717
2718     ZOOM_query_prefix(q, start);
2719
2720     s = ZOOM_connection_scan1(c, q);
2721     ZOOM_query_destroy(q);
2722     return s;
2723
2724 }
2725
2726 ZOOM_API(ZOOM_scanset)
2727     ZOOM_connection_scan1(ZOOM_connection c, ZOOM_query q)
2728 {
2729     ZOOM_scanset scan = 0;
2730
2731     if (!q->z_query)
2732         return 0;
2733     scan = (ZOOM_scanset) xmalloc(sizeof(*scan));
2734     scan->connection = c;
2735     scan->odr = odr_createmem(ODR_DECODE);
2736     scan->options = ZOOM_options_create_with_parent(c->options);
2737     scan->refcount = 1;
2738     scan->scan_response = 0;
2739     scan->srw_scan_response = 0;
2740
2741     scan->query = q;
2742     (q->refcount)++;
2743     scan->databaseNames = set_DatabaseNames(c, c->options,
2744                                             &scan->num_databaseNames,
2745                                             scan->odr);
2746
2747     if (1)
2748     {
2749         ZOOM_task task = ZOOM_connection_add_task(c, ZOOM_TASK_SCAN);
2750         task->u.scan.scan = scan;
2751
2752         (scan->refcount)++;
2753         if (!c->async)
2754         {
2755             while (ZOOM_event(1, &c))
2756                 ;
2757         }
2758     }
2759     return scan;
2760 }
2761
2762 ZOOM_API(void)
2763     ZOOM_scanset_destroy(ZOOM_scanset scan)
2764 {
2765     if (!scan)
2766         return;
2767     (scan->refcount)--;
2768     if (scan->refcount == 0)
2769     {
2770         ZOOM_query_destroy(scan->query);
2771
2772         odr_destroy(scan->odr);
2773
2774         ZOOM_options_destroy(scan->options);
2775         xfree(scan);
2776     }
2777 }
2778
2779 static zoom_ret send_package(ZOOM_connection c)
2780 {
2781     ZOOM_Event event;
2782
2783     yaz_log(log_details, "%p send_package", c);
2784     if (!c->tasks)
2785         return zoom_complete;
2786     assert (c->tasks->which == ZOOM_TASK_PACKAGE);
2787
2788     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
2789     ZOOM_connection_put_event(c, event);
2790
2791     c->buf_out = c->tasks->u.package->buf_out;
2792     c->len_out = c->tasks->u.package->len_out;
2793
2794     return do_write(c);
2795 }
2796
2797 static zoom_ret ZOOM_connection_send_scan(ZOOM_connection c)
2798 {
2799     ZOOM_scanset scan;
2800     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_scanRequest);
2801     Z_ScanRequest *req = apdu->u.scanRequest;
2802
2803     yaz_log(log_details, "%p send_scan", c);
2804     if (!c->tasks)
2805         return zoom_complete;
2806     assert (c->tasks->which == ZOOM_TASK_SCAN);
2807     scan = c->tasks->u.scan.scan;
2808
2809     /* Z39.50 scan can only carry RPN */
2810     if (scan->query->z_query->which == Z_Query_type_1 ||
2811         scan->query->z_query->which == Z_Query_type_101)
2812     {
2813         Z_RPNQuery *rpn = scan->query->z_query->u.type_1;
2814         const char *cp = ZOOM_options_get(scan->options, "rpnCharset");
2815         if (cp)
2816         {
2817             yaz_iconv_t cd = yaz_iconv_open(cp, "UTF-8");
2818             if (cd)
2819             {
2820                 rpn = yaz_copy_z_RPNQuery(rpn, c->odr_out);
2821
2822                 yaz_query_charset_convert_rpnquery(
2823                     rpn, c->odr_out, cd);
2824                 yaz_iconv_close(cd);
2825             }
2826         }
2827         req->attributeSet = rpn->attributeSetId;
2828         if (!req->attributeSet)
2829             req->attributeSet = odr_oiddup(c->odr_out, yaz_oid_attset_bib_1);
2830         if (rpn->RPNStructure->which == Z_RPNStructure_simple &&
2831             rpn->RPNStructure->u.simple->which == Z_Operand_APT)
2832         {
2833             req->termListAndStartPoint =
2834                 rpn->RPNStructure->u.simple->u.attributesPlusTerm;
2835         }
2836         else
2837         {
2838             set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
2839             return zoom_complete;
2840         }
2841     }
2842     else
2843     {
2844         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
2845         return zoom_complete;
2846     }
2847
2848     *req->numberOfTermsRequested =
2849         ZOOM_options_get_int(scan->options, "number", 10);
2850
2851     req->preferredPositionInResponse =
2852         odr_intdup(c->odr_out,
2853                    ZOOM_options_get_int(scan->options, "position", 1));
2854
2855     req->stepSize =
2856         odr_intdup(c->odr_out,
2857                    ZOOM_options_get_int(scan->options, "stepSize", 0));
2858
2859     req->databaseNames = scan->databaseNames;
2860     req->num_databaseNames = scan->num_databaseNames;
2861
2862     return send_APDU(c, apdu);
2863 }
2864
2865 #if YAZ_HAVE_XML2
2866 static zoom_ret ZOOM_connection_srw_send_scan(ZOOM_connection c)
2867 {
2868     ZOOM_scanset scan;
2869     Z_SRW_PDU *sr = 0;
2870     const char *option_val = 0;
2871
2872     if (!c->tasks)
2873         return zoom_complete;
2874     assert (c->tasks->which == ZOOM_TASK_SCAN);
2875     scan = c->tasks->u.scan.scan;
2876
2877     sr = ZOOM_srw_get_pdu(c, Z_SRW_scan_request);
2878
2879     /* SRU scan can only carry CQL and PQF */
2880     if (scan->query->z_query->which == Z_Query_type_104)
2881     {
2882         sr->u.scan_request->query_type = Z_SRW_query_type_cql;
2883         sr->u.scan_request->scanClause.cql = scan->query->query_string;
2884     }
2885     else if (scan->query->z_query->which == Z_Query_type_1
2886              || scan->query->z_query->which == Z_Query_type_101)
2887     {
2888         sr->u.scan_request->query_type = Z_SRW_query_type_pqf;
2889         sr->u.scan_request->scanClause.pqf = scan->query->query_string;
2890     }
2891     else
2892     {
2893         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
2894         return zoom_complete;
2895     }
2896
2897     sr->u.scan_request->maximumTerms = odr_intdup(
2898         c->odr_out, ZOOM_options_get_int(scan->options, "number", 10));
2899
2900     sr->u.scan_request->responsePosition = odr_intdup(
2901         c->odr_out, ZOOM_options_get_int(scan->options, "position", 1));
2902
2903     option_val = ZOOM_options_get(scan->options, "extraArgs");
2904     if (option_val)
2905         sr->extra_args = odr_strdup(c->odr_out, option_val);
2906     return send_srw(c, sr);
2907 }
2908 #else
2909 static zoom_ret ZOOM_connection_srw_send_scan(ZOOM_connection c)
2910 {
2911     return zoom_complete;
2912 }
2913 #endif
2914
2915
2916 ZOOM_API(size_t)
2917     ZOOM_scanset_size(ZOOM_scanset scan)
2918 {
2919     if (!scan)
2920         return 0;
2921
2922     if (scan->scan_response && scan->scan_response->entries)
2923         return scan->scan_response->entries->num_entries;
2924     else if (scan->srw_scan_response)
2925         return scan->srw_scan_response->num_terms;
2926     return 0;
2927 }
2928
2929 static void ZOOM_scanset_term_x(ZOOM_scanset scan, size_t pos,
2930                                 int *occ,
2931                                 const char **value_term, size_t *value_len,
2932                                 const char **disp_term, size_t *disp_len)
2933 {
2934     size_t noent = ZOOM_scanset_size(scan);
2935
2936     *value_term = 0;
2937     *value_len = 0;
2938
2939     *disp_term = 0;
2940     *disp_len = 0;
2941
2942     *occ = 0;
2943     if (pos >= noent || pos < 0)
2944         return;
2945     if (scan->scan_response)
2946     {
2947         Z_ScanResponse *res = scan->scan_response;
2948         if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2949         {
2950             Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2951
2952             *value_term = (const char *) t->term->u.general->buf;
2953             *value_len = t->term->u.general->len;
2954             if (t->displayTerm)
2955             {
2956                 *disp_term = t->displayTerm;
2957                 *disp_len = strlen(*disp_term);
2958             }
2959             else if (t->term->which == Z_Term_general)
2960             {
2961                 *disp_term = (const char *) t->term->u.general->buf;
2962                 *disp_len = t->term->u.general->len;
2963             }
2964             *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2965         }
2966     }
2967     if (scan->srw_scan_response)
2968     {
2969         Z_SRW_scanResponse *res = scan->srw_scan_response;
2970         Z_SRW_scanTerm *t = res->terms + pos;
2971         if (t)
2972         {
2973             *value_term = t->value;
2974             *value_len = strlen(*value_term);
2975
2976             if (t->displayTerm)
2977                 *disp_term = t->displayTerm;
2978             else
2979                 *disp_term = t->value;
2980             *disp_len = strlen(*disp_term);
2981             *occ = t->numberOfRecords ? *t->numberOfRecords : 0;
2982         }
2983     }
2984 }
2985
2986 ZOOM_API(const char *)
2987     ZOOM_scanset_term(ZOOM_scanset scan, size_t pos,
2988                       int *occ, int *len)
2989 {
2990     const char *value_term = 0;
2991     size_t value_len = 0;
2992     const char *disp_term = 0;
2993     size_t disp_len = 0;
2994
2995     ZOOM_scanset_term_x(scan, pos, occ, &value_term, &value_len,
2996                         &disp_term, &disp_len);
2997
2998     *len = value_len;
2999     return value_term;
3000 }
3001
3002 ZOOM_API(const char *)
3003     ZOOM_scanset_display_term(ZOOM_scanset scan, size_t pos,
3004                               int *occ, int *len)
3005 {
3006     const char *value_term = 0;
3007     size_t value_len = 0;
3008     const char *disp_term = 0;
3009     size_t disp_len = 0;
3010
3011     ZOOM_scanset_term_x(scan, pos, occ, &value_term, &value_len,
3012                         &disp_term, &disp_len);
3013
3014     *len = disp_len;
3015     return disp_term;
3016 }
3017
3018 ZOOM_API(const char *)
3019     ZOOM_scanset_option_get(ZOOM_scanset scan, const char *key)
3020 {
3021     return ZOOM_options_get(scan->options, key);
3022 }
3023
3024 ZOOM_API(void)
3025     ZOOM_scanset_option_set(ZOOM_scanset scan, const char *key,
3026                             const char *val)
3027 {
3028     ZOOM_options_set(scan->options, key, val);
3029 }
3030
3031 static Z_APDU *create_es_package(ZOOM_package p, const Odr_oid *oid)
3032 {
3033     const char *str;
3034     Z_APDU *apdu = zget_APDU(p->odr_out, Z_APDU_extendedServicesRequest);
3035     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
3036
3037     str = ZOOM_options_get(p->options, "package-name");
3038     if (str && *str)
3039         req->packageName = odr_strdup(p->odr_out, str);
3040
3041     str = ZOOM_options_get(p->options, "user-id");
3042     if (str)
3043         req->userId = odr_strdup_null(p->odr_out, str);
3044
3045     req->packageType = odr_oiddup(p->odr_out, oid);
3046
3047     str = ZOOM_options_get(p->options, "function");
3048     if (str)
3049     {
3050         if (!strcmp (str, "create"))
3051             *req->function = Z_ExtendedServicesRequest_create;
3052         if (!strcmp (str, "delete"))
3053             *req->function = Z_ExtendedServicesRequest_delete;
3054         if (!strcmp (str, "modify"))
3055             *req->function = Z_ExtendedServicesRequest_modify;
3056     }
3057
3058     str = ZOOM_options_get(p->options, "waitAction");
3059     if (str)
3060     {
3061         if (!strcmp (str, "wait"))
3062             *req->waitAction = Z_ExtendedServicesRequest_wait;
3063         if (!strcmp (str, "waitIfPossible"))
3064             *req->waitAction = Z_ExtendedServicesRequest_waitIfPossible;
3065         if (!strcmp (str, "dontWait"))
3066             *req->waitAction = Z_ExtendedServicesRequest_dontWait;
3067         if (!strcmp (str, "dontReturnPackage"))
3068             *req->waitAction = Z_ExtendedServicesRequest_dontReturnPackage;
3069     }
3070     return apdu;
3071 }
3072
3073 static const char *ill_array_lookup(void *clientData, const char *idx)
3074 {
3075     ZOOM_package p = (ZOOM_package) clientData;
3076     return ZOOM_options_get(p->options, idx+4);
3077 }
3078
3079 static Z_External *encode_ill_request(ZOOM_package p)
3080 {
3081     ODR out = p->odr_out;
3082     ILL_Request *req;
3083     Z_External *r = 0;
3084     struct ill_get_ctl ctl;
3085
3086     ctl.odr = p->odr_out;
3087     ctl.clientData = p;
3088     ctl.f = ill_array_lookup;
3089
3090     req = ill_get_ILLRequest(&ctl, "ill", 0);
3091
3092     if (!ill_Request(out, &req, 0, 0))
3093     {
3094         int ill_request_size;
3095         char *ill_request_buf = odr_getbuf(out, &ill_request_size, 0);
3096         if (ill_request_buf)
3097             odr_setbuf(out, ill_request_buf, ill_request_size, 1);
3098         return 0;
3099     }
3100     else
3101     {
3102         int illRequest_size = 0;
3103         char *illRequest_buf = odr_getbuf(out, &illRequest_size, 0);
3104
3105         r = (Z_External *) odr_malloc(out, sizeof(*r));
3106         r->direct_reference = odr_oiddup(out, yaz_oid_general_isoill_1);
3107         r->indirect_reference = 0;
3108         r->descriptor = 0;
3109         r->which = Z_External_single;
3110
3111         r->u.single_ASN1_type =
3112             odr_create_Odr_oct(out,
3113                                (unsigned char *)illRequest_buf,
3114                                illRequest_size);
3115     }
3116     return r;
3117 }
3118
3119 static Z_ItemOrder *encode_item_order(ZOOM_package p)
3120 {
3121     Z_ItemOrder *req = (Z_ItemOrder *) odr_malloc(p->odr_out, sizeof(*req));
3122     const char *str;
3123
3124     req->which = Z_IOItemOrder_esRequest;
3125     req->u.esRequest = (Z_IORequest *)
3126         odr_malloc(p->odr_out,sizeof(Z_IORequest));
3127
3128     /* to keep part ... */
3129     req->u.esRequest->toKeep = (Z_IOOriginPartToKeep *)
3130         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartToKeep));
3131     req->u.esRequest->toKeep->supplDescription = 0;
3132     req->u.esRequest->toKeep->contact = (Z_IOContact *)
3133         odr_malloc(p->odr_out, sizeof(*req->u.esRequest->toKeep->contact));
3134
3135     str = ZOOM_options_get(p->options, "contact-name");
3136     req->u.esRequest->toKeep->contact->name =
3137         odr_strdup_null(p->odr_out, str);
3138
3139     str = ZOOM_options_get(p->options, "contact-phone");
3140     req->u.esRequest->toKeep->contact->phone =
3141         odr_strdup_null(p->odr_out, str);
3142
3143     str = ZOOM_options_get(p->options, "contact-email");
3144     req->u.esRequest->toKeep->contact->email =
3145         odr_strdup_null(p->odr_out, str);
3146
3147     req->u.esRequest->toKeep->addlBilling = 0;
3148
3149     /* not to keep part ... */
3150     req->u.esRequest->notToKeep = (Z_IOOriginPartNotToKeep *)
3151         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartNotToKeep));
3152
3153     str = ZOOM_options_get(p->options, "itemorder-setname");
3154     if (!str)
3155         str = "default";
3156
3157     if (!*str)
3158         req->u.esRequest->notToKeep->resultSetItem = 0;
3159     else
3160     {
3161         req->u.esRequest->notToKeep->resultSetItem = (Z_IOResultSetItem *)
3162             odr_malloc(p->odr_out, sizeof(Z_IOResultSetItem));
3163
3164         req->u.esRequest->notToKeep->resultSetItem->resultSetId =
3165             odr_strdup(p->odr_out, str);
3166         req->u.esRequest->notToKeep->resultSetItem->item =
3167             (int *) odr_malloc(p->odr_out, sizeof(int));
3168
3169         str = ZOOM_options_get(p->options, "itemorder-item");
3170         *req->u.esRequest->notToKeep->resultSetItem->item =
3171             (str ? atoi(str) : 1);
3172     }
3173
3174     str = ZOOM_options_get(p->options, "doc");
3175     if (str)
3176     {
3177         req->u.esRequest->notToKeep->itemRequest =
3178             z_ext_record_xml(p->odr_out, str, strlen(str));
3179     }
3180     else
3181         req->u.esRequest->notToKeep->itemRequest = encode_ill_request(p);
3182
3183     return req;
3184 }
3185
3186 Z_APDU *create_admin_package(ZOOM_package p, int type,
3187                              Z_ESAdminOriginPartToKeep **toKeepP,
3188                              Z_ESAdminOriginPartNotToKeep **notToKeepP)
3189 {
3190     Z_APDU *apdu = create_es_package(p, yaz_oid_extserv_admin);
3191     if (apdu)
3192     {
3193         Z_ESAdminOriginPartToKeep  *toKeep;
3194         Z_ESAdminOriginPartNotToKeep  *notToKeep;
3195         Z_External *r = (Z_External *) odr_malloc(p->odr_out, sizeof(*r));
3196         const char *first_db = "Default";
3197         int num_db;
3198         char **db = set_DatabaseNames(p->connection, p->options, &num_db,
3199                                       p->odr_out);
3200         if (num_db > 0)
3201             first_db = db[0];
3202
3203         r->direct_reference = odr_oiddup(p->odr_out, yaz_oid_extserv_admin);
3204         r->descriptor = 0;
3205         r->indirect_reference = 0;
3206         r->which = Z_External_ESAdmin;
3207
3208         r->u.adminService = (Z_Admin *)
3209             odr_malloc(p->odr_out, sizeof(*r->u.adminService));
3210         r->u.adminService->which = Z_Admin_esRequest;
3211         r->u.adminService->u.esRequest = (Z_AdminEsRequest *)
3212             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest));
3213
3214         toKeep = r->u.adminService->u.esRequest->toKeep =
3215             (Z_ESAdminOriginPartToKeep *)
3216             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest->toKeep));
3217         toKeep->which = type;
3218         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
3219         toKeep->u.create = odr_nullval();
3220         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3221
3222         r->u.adminService->u.esRequest->notToKeep = notToKeep =
3223             (Z_ESAdminOriginPartNotToKeep *)
3224             odr_malloc(p->odr_out,
3225                        sizeof(*r->u.adminService->u.esRequest->notToKeep));
3226         notToKeep->which = Z_ESAdminOriginPartNotToKeep_recordsWillFollow;
3227         notToKeep->u.recordsWillFollow = odr_nullval();
3228         if (toKeepP)
3229             *toKeepP = toKeep;
3230         if (notToKeepP)
3231             *notToKeepP = notToKeep;
3232     }
3233     return apdu;
3234 }
3235
3236 static Z_APDU *create_xmlupdate_package(ZOOM_package p)
3237 {
3238     Z_APDU *apdu = create_es_package(p, yaz_oid_extserv_xml_es);
3239     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
3240     Z_External *ext = (Z_External *) odr_malloc(p->odr_out, sizeof(*ext));
3241     const char *doc = ZOOM_options_get(p->options, "doc");
3242
3243     if (!doc)
3244         doc = "";
3245
3246     req->taskSpecificParameters = ext;
3247     ext->direct_reference = req->packageType;
3248     ext->descriptor = 0;
3249     ext->indirect_reference = 0;
3250
3251     ext->which = Z_External_octet;
3252     ext->u.single_ASN1_type =
3253         odr_create_Odr_oct(p->odr_out, (const unsigned char *) doc,
3254                            strlen(doc));
3255     return apdu;
3256 }
3257
3258 static Z_APDU *create_update_package(ZOOM_package p)
3259 {
3260     Z_APDU *apdu = 0;
3261     const char *first_db = "Default";
3262     int num_db;
3263     char **db = set_DatabaseNames(p->connection, p->options, &num_db, p->odr_out);
3264     const char *action = ZOOM_options_get(p->options, "action");
3265     const char *recordIdOpaque = ZOOM_options_get(p->options, "recordIdOpaque");
3266     const char *recordIdNumber = ZOOM_options_get(p->options, "recordIdNumber");
3267     const char *record_buf = ZOOM_options_get(p->options, "record");
3268     const char *syntax_str = ZOOM_options_get(p->options, "syntax");
3269     const char *version = ZOOM_options_get(p->options, "updateVersion");
3270
3271     const char *correlationInfo_note =
3272         ZOOM_options_get(p->options, "correlationInfo.note");
3273     const char *correlationInfo_id =
3274         ZOOM_options_get(p->options, "correlationInfo.id");
3275     int action_no = -1;
3276     Odr_oid *syntax_oid = 0;
3277     const Odr_oid *package_oid = yaz_oid_extserv_database_update;
3278
3279     if (!version)
3280         version = "3";
3281     if (!syntax_str)
3282         syntax_str = "xml";
3283     if (!record_buf)
3284     {
3285         record_buf = "void";
3286         syntax_str = "SUTRS";
3287     }
3288
3289     if (syntax_str)
3290     {
3291         syntax_oid = yaz_string_to_oid_odr(yaz_oid_std(),
3292                                            CLASS_RECSYN, syntax_str,
3293                                            p->odr_out);
3294     }
3295     if (!syntax_oid)
3296         return 0;
3297
3298     if (num_db > 0)
3299         first_db = db[0];
3300
3301     switch(*version)
3302     {
3303     case '1':
3304         package_oid = yaz_oid_extserv_database_update_first_version;
3305         /* old update does not support specialUpdate */
3306         if (!action)
3307             action = "recordInsert";
3308         break;
3309     case '2':
3310         if (!action)
3311             action = "specialUpdate";
3312         package_oid = yaz_oid_extserv_database_update_second_version;
3313         break;
3314     case '3':
3315         if (!action)
3316             action = "specialUpdate";
3317         package_oid = yaz_oid_extserv_database_update;
3318         break;
3319     default:
3320         return 0;
3321     }
3322
3323     if (!strcmp(action, "recordInsert"))
3324         action_no = Z_IUOriginPartToKeep_recordInsert;
3325     else if (!strcmp(action, "recordReplace"))
3326         action_no = Z_IUOriginPartToKeep_recordReplace;
3327     else if (!strcmp(action, "recordDelete"))
3328         action_no = Z_IUOriginPartToKeep_recordDelete;
3329     else if (!strcmp(action, "elementUpdate"))
3330         action_no = Z_IUOriginPartToKeep_elementUpdate;
3331     else if (!strcmp(action, "specialUpdate"))
3332         action_no = Z_IUOriginPartToKeep_specialUpdate;
3333     else
3334         return 0;
3335
3336     apdu = create_es_package(p, package_oid);
3337     if (apdu)
3338     {
3339         Z_IUOriginPartToKeep *toKeep;
3340         Z_IUSuppliedRecords *notToKeep;
3341         Z_External *r = (Z_External *)
3342             odr_malloc(p->odr_out, sizeof(*r));
3343         const char *elementSetName =
3344             ZOOM_options_get(p->options, "elementSetName");
3345
3346         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3347
3348         r->direct_reference = odr_oiddup(p->odr_out, package_oid);
3349         r->descriptor = 0;
3350         r->which = Z_External_update;
3351         r->indirect_reference = 0;
3352         r->u.update = (Z_IUUpdate *)
3353             odr_malloc(p->odr_out, sizeof(*r->u.update));
3354
3355         r->u.update->which = Z_IUUpdate_esRequest;
3356         r->u.update->u.esRequest = (Z_IUUpdateEsRequest *)
3357             odr_malloc(p->odr_out, sizeof(*r->u.update->u.esRequest));
3358         toKeep = r->u.update->u.esRequest->toKeep =
3359             (Z_IUOriginPartToKeep *)
3360             odr_malloc(p->odr_out, sizeof(*toKeep));
3361
3362         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
3363         toKeep->schema = 0;
3364
3365         toKeep->elementSetName = odr_strdup_null(p->odr_out, elementSetName);
3366
3367         toKeep->actionQualifier = 0;
3368         toKeep->action = odr_intdup(p->odr_out, action_no);
3369
3370         notToKeep = r->u.update->u.esRequest->notToKeep =
3371             (Z_IUSuppliedRecords *)
3372             odr_malloc(p->odr_out, sizeof(*notToKeep));
3373         notToKeep->num = 1;
3374         notToKeep->elements = (Z_IUSuppliedRecords_elem **)
3375             odr_malloc(p->odr_out, sizeof(*notToKeep->elements));
3376         notToKeep->elements[0] = (Z_IUSuppliedRecords_elem *)
3377             odr_malloc(p->odr_out, sizeof(**notToKeep->elements));
3378         notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_opaque;
3379         if (recordIdOpaque)
3380         {
3381             notToKeep->elements[0]->u.opaque =
3382                 odr_create_Odr_oct(p->odr_out,
3383                                    (const unsigned char *) recordIdOpaque,
3384                                    strlen(recordIdOpaque));
3385         }
3386         else if (recordIdNumber)
3387         {
3388             notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_number;
3389
3390             notToKeep->elements[0]->u.number =
3391                 odr_intdup(p->odr_out, atoi(recordIdNumber));
3392         }
3393         else
3394             notToKeep->elements[0]->u.opaque = 0;
3395         notToKeep->elements[0]->supplementalId = 0;
3396         if (correlationInfo_note || correlationInfo_id)
3397         {
3398             Z_IUCorrelationInfo *ci;
3399             ci = notToKeep->elements[0]->correlationInfo =
3400                 odr_malloc(p->odr_out, sizeof(*ci));
3401             ci->note = odr_strdup_null(p->odr_out, correlationInfo_note);
3402             ci->id = correlationInfo_id ?
3403                 odr_intdup(p->odr_out, atoi(correlationInfo_id)) : 0;
3404         }
3405         else
3406             notToKeep->elements[0]->correlationInfo = 0;
3407         notToKeep->elements[0]->record =
3408             z_ext_record_oid(p->odr_out, syntax_oid,
3409                              record_buf, strlen(record_buf));
3410     }
3411     if (0 && apdu)
3412     {
3413         ODR print = odr_createmem(ODR_PRINT);
3414
3415         z_APDU(print, &apdu, 0, 0);
3416         odr_destroy(print);
3417     }
3418     return apdu;
3419 }
3420
3421 ZOOM_API(void)
3422     ZOOM_package_send(ZOOM_package p, const char *type)
3423 {
3424     Z_APDU *apdu = 0;
3425     ZOOM_connection c;
3426     if (!p)
3427         return;
3428     c = p->connection;
3429     odr_reset(p->odr_out);
3430     xfree(p->buf_out);
3431     p->buf_out = 0;
3432     if (!strcmp(type, "itemorder"))
3433     {
3434         apdu = create_es_package(p, yaz_oid_extserv_item_order);
3435         if (apdu)
3436         {
3437             Z_External *r = (Z_External *) odr_malloc(p->odr_out, sizeof(*r));
3438
3439             r->direct_reference =
3440                 odr_oiddup(p->odr_out, yaz_oid_extserv_item_order);
3441             r->descriptor = 0;
3442             r->which = Z_External_itemOrder;
3443             r->indirect_reference = 0;
3444             r->u.itemOrder = encode_item_order(p);
3445
3446             apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3447         }
3448     }
3449     else if (!strcmp(type, "create"))  /* create database */
3450     {
3451         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_create,
3452                                     0, 0);
3453     }
3454     else if (!strcmp(type, "drop"))  /* drop database */
3455     {
3456         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_drop,
3457                                     0, 0);
3458     }
3459     else if (!strcmp(type, "commit"))  /* commit changes */
3460     {
3461         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_commit,
3462                                     0, 0);
3463     }
3464     else if (!strcmp(type, "update")) /* update record(s) */
3465     {
3466         apdu = create_update_package(p);
3467     }
3468     else if (!strcmp(type, "xmlupdate"))
3469     {
3470         apdu = create_xmlupdate_package(p);
3471     }
3472     if (apdu)
3473     {
3474         if (encode_APDU(p->connection, apdu, p->odr_out) == 0)
3475         {
3476             char *buf;
3477
3478             ZOOM_task task = ZOOM_connection_add_task(c, ZOOM_TASK_PACKAGE);
3479             task->u.package = p;
3480             buf = odr_getbuf(p->odr_out, &p->len_out, 0);
3481             p->buf_out = (char *) xmalloc(p->len_out);
3482             memcpy(p->buf_out, buf, p->len_out);
3483
3484             (p->refcount)++;
3485             if (!c->async)
3486             {
3487                 while (ZOOM_event(1, &c))
3488                     ;
3489             }
3490         }
3491     }
3492 }
3493
3494 ZOOM_API(ZOOM_package)
3495     ZOOM_connection_package(ZOOM_connection c, ZOOM_options options)
3496 {
3497     ZOOM_package p = (ZOOM_package) xmalloc(sizeof(*p));
3498
3499     p->connection = c;
3500     p->odr_out = odr_createmem(ODR_ENCODE);
3501     p->options = ZOOM_options_create_with_parent2(options, c->options);
3502     p->refcount = 1;
3503     p->buf_out = 0;
3504     p->len_out = 0;
3505     return p;
3506 }
3507
3508 ZOOM_API(void)
3509     ZOOM_package_destroy(ZOOM_package p)
3510 {
3511     if (!p)
3512         return;
3513     (p->refcount)--;
3514     if (p->refcount == 0)
3515     {
3516         odr_destroy(p->odr_out);
3517         xfree(p->buf_out);
3518
3519         ZOOM_options_destroy(p->options);
3520         xfree(p);
3521     }
3522 }
3523
3524 ZOOM_API(const char *)
3525     ZOOM_package_option_get(ZOOM_package p, const char *key)
3526 {
3527     return ZOOM_options_get(p->options, key);
3528 }
3529
3530
3531 ZOOM_API(void)
3532     ZOOM_package_option_set(ZOOM_package p, const char *key,
3533                             const char *val)
3534 {
3535     ZOOM_options_set(p->options, key, val);
3536 }
3537
3538 static int ZOOM_connection_exec_task(ZOOM_connection c)
3539 {
3540     ZOOM_task task = c->tasks;
3541     zoom_ret ret = zoom_complete;
3542
3543     if (!task)
3544         return 0;
3545     yaz_log(log_details, "%p ZOOM_connection_exec_task type=%d run=%d",
3546             c, task->which, task->running);
3547     if (c->error != ZOOM_ERROR_NONE)
3548     {
3549         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3550                 "removing tasks because of error = %d", c, c->error);
3551         ZOOM_connection_remove_tasks(c);
3552         return 0;
3553     }
3554     if (task->running)
3555     {
3556         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3557                 "task already running", c);
3558         return 0;
3559     }
3560     task->running = 1;
3561     ret = zoom_complete;
3562     if (c->cs || task->which == ZOOM_TASK_CONNECT)
3563     {
3564         switch (task->which)
3565         {
3566         case ZOOM_TASK_SEARCH:
3567             if (c->proto == PROTO_HTTP)
3568                 ret = ZOOM_connection_srw_send_search(c);
3569             else
3570                 ret = ZOOM_connection_send_search(c);
3571             break;
3572         case ZOOM_TASK_RETRIEVE:
3573             if (c->proto == PROTO_HTTP)
3574                 ret = ZOOM_connection_srw_send_search(c);
3575             else
3576                 ret = send_present(c);
3577             break;
3578         case ZOOM_TASK_CONNECT:
3579             ret = do_connect(c);
3580             break;
3581         case ZOOM_TASK_SCAN:
3582             if (c->proto == PROTO_HTTP)
3583                 ret = ZOOM_connection_srw_send_scan(c);
3584             else
3585                 ret = ZOOM_connection_send_scan(c);
3586             break;
3587         case ZOOM_TASK_PACKAGE:
3588             ret = send_package(c);
3589             break;
3590         case ZOOM_TASK_SORT:
3591             c->tasks->u.sort.resultset->r_sort_spec =
3592                 c->tasks->u.sort.q->sort_spec;
3593             ret = send_sort(c, c->tasks->u.sort.resultset);
3594             break;
3595         }
3596     }
3597     else
3598     {
3599         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3600                 "remove tasks because no connection exist", c);
3601         ZOOM_connection_remove_tasks(c);
3602     }
3603     if (ret == zoom_complete)
3604     {
3605         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3606                 "task removed (complete)", c);
3607         ZOOM_connection_remove_task(c);
3608         return 0;
3609     }
3610     yaz_log(log_details, "%p ZOOM_connection_exec_task "
3611             "task pending", c);
3612     return 1;
3613 }
3614
3615 static zoom_ret send_sort_present(ZOOM_connection c)
3616 {
3617     zoom_ret r = zoom_complete;
3618
3619     if (c->tasks && c->tasks->which == ZOOM_TASK_SEARCH)
3620         r = send_sort(c, c->tasks->u.search.resultset);
3621     if (r == zoom_complete)
3622         r = send_present(c);
3623     return r;
3624 }
3625
3626 static int es_response(ZOOM_connection c,
3627                        Z_ExtendedServicesResponse *res)
3628 {
3629     if (!c->tasks || c->tasks->which != ZOOM_TASK_PACKAGE)
3630         return 0;
3631     if (res->diagnostics && res->num_diagnostics > 0)
3632         response_diag(c, res->diagnostics[0]);
3633     if (res->taskPackage &&
3634         res->taskPackage->which == Z_External_extendedService)
3635     {
3636         Z_TaskPackage *taskPackage = res->taskPackage->u.extendedService;
3637         Odr_oct *id = taskPackage->targetReference;
3638
3639         if (id)
3640             ZOOM_options_setl(c->tasks->u.package->options,
3641                               "targetReference", (char*) id->buf, id->len);
3642     }
3643     if (res->taskPackage &&
3644         res->taskPackage->which == Z_External_octet)
3645     {
3646         Odr_oct *doc = res->taskPackage->u.octet_aligned;
3647         ZOOM_options_setl(c->tasks->u.package->options,
3648                           "xmlUpdateDoc", (char*) doc->buf, doc->len);
3649     }
3650     return 1;
3651 }
3652
3653 static void interpret_init_diag(ZOOM_connection c,
3654                                 Z_DiagnosticFormat *diag)
3655 {
3656     if (diag->num > 0)
3657     {
3658         Z_DiagnosticFormat_s *ds = diag->elements[0];
3659         if (ds->which == Z_DiagnosticFormat_s_defaultDiagRec)
3660             response_default_diag(c, ds->u.defaultDiagRec);
3661     }
3662 }
3663
3664
3665 static void interpret_otherinformation_field(ZOOM_connection c,
3666                                              Z_OtherInformation *ui)
3667 {
3668     int i;
3669     for (i = 0; i < ui->num_elements; i++)
3670     {
3671         Z_OtherInformationUnit *unit = ui->list[i];
3672         if (unit->which == Z_OtherInfo_externallyDefinedInfo &&
3673             unit->information.externallyDefinedInfo &&
3674             unit->information.externallyDefinedInfo->which ==
3675             Z_External_diag1)
3676         {
3677             interpret_init_diag(c, unit->information.externallyDefinedInfo->u.diag1);
3678         }
3679     }
3680 }
3681
3682
3683 static void set_init_option(const char *name, void *clientData) {
3684     ZOOM_connection c = (ZOOM_connection) clientData;
3685     char buf[80];
3686
3687     sprintf(buf, "init_opt_%.70s", name);
3688     ZOOM_connection_option_set(c, buf, "1");
3689 }
3690
3691
3692 static void recv_apdu(ZOOM_connection c, Z_APDU *apdu)
3693 {
3694     Z_InitResponse *initrs;
3695
3696     ZOOM_connection_set_mask(c, 0);
3697     yaz_log(log_details, "%p recv_apdu apdu->which=%d", c, apdu->which);
3698     switch(apdu->which)
3699     {
3700     case Z_APDU_initResponse:
3701         yaz_log(log_api, "%p recv_apdu: Received Init response", c);
3702         initrs = apdu->u.initResponse;
3703         ZOOM_connection_option_set(c, "serverImplementationId",
3704                                    initrs->implementationId ?
3705                                    initrs->implementationId : "");
3706         ZOOM_connection_option_set(c, "serverImplementationName",
3707                                    initrs->implementationName ?
3708                                    initrs->implementationName : "");
3709         ZOOM_connection_option_set(c, "serverImplementationVersion",
3710                                    initrs->implementationVersion ?
3711                                    initrs->implementationVersion : "");
3712         /* Set the three old options too, for old applications */
3713         ZOOM_connection_option_set(c, "targetImplementationId",
3714                                    initrs->implementationId ?
3715                                    initrs->implementationId : "");
3716         ZOOM_connection_option_set(c, "targetImplementationName",
3717                                    initrs->implementationName ?
3718                                    initrs->implementationName : "");
3719         ZOOM_connection_option_set(c, "targetImplementationVersion",
3720                                    initrs->implementationVersion ?
3721                                    initrs->implementationVersion : "");
3722
3723         /* Make initrs->options available as ZOOM-level options */
3724         yaz_init_opt_decode(initrs->options, set_init_option, (void*) c);
3725
3726         if (!*initrs->result)
3727         {
3728             Z_External *uif = initrs->userInformationField;
3729
3730             set_ZOOM_error(c, ZOOM_ERROR_INIT, 0); /* default error */
3731
3732             if (uif && uif->which == Z_External_userInfo1)
3733                 interpret_otherinformation_field(c, uif->u.userInfo1);
3734         }
3735         else
3736         {
3737             char *cookie =
3738                 yaz_oi_get_string_oid(&apdu->u.initResponse->otherInfo,
3739                                       yaz_oid_userinfo_cookie, 1, 0);
3740             xfree(c->cookie_in);
3741             c->cookie_in = 0;
3742             if (cookie)
3743                 c->cookie_in = xstrdup(cookie);
3744             if (ODR_MASK_GET(initrs->options, Z_Options_namedResultSets) &&
3745                 ODR_MASK_GET(initrs->protocolVersion, Z_ProtocolVersion_3))
3746                 c->support_named_resultsets = 1;
3747             if (c->tasks)
3748             {
3749                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
3750                 ZOOM_connection_remove_task(c);
3751             }
3752             ZOOM_connection_exec_task(c);
3753         }
3754         if (ODR_MASK_GET(initrs->options, Z_Options_negotiationModel))
3755         {
3756             NMEM tmpmem = nmem_create();
3757             Z_CharSetandLanguageNegotiation *p =
3758                 yaz_get_charneg_record(initrs->otherInfo);
3759
3760             if (p)
3761             {
3762                 char *charset = NULL, *lang = NULL;
3763                 int sel;
3764
3765                 yaz_get_response_charneg(tmpmem, p, &charset, &lang, &sel);
3766                 yaz_log(log_details, "%p recv_apdu target accepted: "
3767                         "charset %s, language %s, select %d",
3768                         c,
3769                         charset ? charset : "none", lang ? lang : "none", sel);
3770                 if (charset)
3771                     ZOOM_connection_option_set(c, "negotiation-charset",
3772                                                charset);
3773                 if (lang)
3774                     ZOOM_connection_option_set(c, "negotiation-lang",
3775                                                lang);
3776
3777                 ZOOM_connection_option_set(
3778                     c,  "negotiation-charset-in-effect-for-records",
3779                     (sel != 0) ? "1" : "0");
3780                 nmem_destroy(tmpmem);
3781             }
3782         }
3783         break;
3784     case Z_APDU_searchResponse:
3785         yaz_log(log_api, "%p recv_apdu Search response", c);
3786         handle_search_response(c, apdu->u.searchResponse);
3787         if (send_sort_present(c) == zoom_complete)
3788             ZOOM_connection_remove_task(c);
3789         break;
3790     case Z_APDU_presentResponse:
3791         yaz_log(log_api, "%p recv_apdu Present response", c);
3792         handle_present_response(c, apdu->u.presentResponse);
3793         if (send_present(c) == zoom_complete)
3794             ZOOM_connection_remove_task(c);
3795         break;
3796     case Z_APDU_sortResponse:
3797         yaz_log(log_api, "%p recv_apdu Sort response", c);
3798         sort_response(c, apdu->u.sortResponse);
3799         if (send_present(c) == zoom_complete)
3800             ZOOM_connection_remove_task(c);
3801         break;
3802     case Z_APDU_scanResponse:
3803         yaz_log(log_api, "%p recv_apdu Scan response", c);
3804         scan_response(c, apdu->u.scanResponse);
3805         ZOOM_connection_remove_task(c);
3806         break;
3807     case Z_APDU_extendedServicesResponse:
3808         yaz_log(log_api, "%p recv_apdu Extended Services response", c);
3809         es_response(c, apdu->u.extendedServicesResponse);
3810         ZOOM_connection_remove_task(c);
3811         break;
3812     case Z_APDU_close:
3813         yaz_log(log_api, "%p recv_apdu Close PDU", c);
3814         if (!ZOOM_test_reconnect(c))
3815         {
3816             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3817             do_close(c);
3818         }
3819         break;
3820     default:
3821         yaz_log(log_api, "%p Received unknown PDU", c);
3822         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3823         do_close(c);
3824     }
3825 }
3826
3827 #if YAZ_HAVE_XML2
3828 static void handle_srw_response(ZOOM_connection c,
3829                                 Z_SRW_searchRetrieveResponse *res)
3830 {
3831     ZOOM_resultset resultset = 0;
3832     int i;
3833     NMEM nmem;
3834     ZOOM_Event event;
3835     int *start;
3836     const char *syntax, *elementSetName;
3837
3838     if (!c->tasks)
3839         return;
3840
3841     switch(c->tasks->which)
3842     {
3843     case ZOOM_TASK_SEARCH:
3844         resultset = c->tasks->u.search.resultset;
3845         start = &c->tasks->u.search.start;
3846         syntax = c->tasks->u.search.syntax;
3847         elementSetName = c->tasks->u.search.elementSetName;
3848         break;
3849     case ZOOM_TASK_RETRIEVE:
3850         resultset = c->tasks->u.retrieve.resultset;
3851         start = &c->tasks->u.retrieve.start;
3852         syntax = c->tasks->u.retrieve.syntax;
3853         elementSetName = c->tasks->u.retrieve.elementSetName;
3854         break;
3855     default:
3856         return;
3857     }
3858     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
3859     ZOOM_connection_put_event(c, event);
3860
3861     resultset->size = 0;
3862
3863     if (res->resultSetId)
3864         ZOOM_resultset_option_set(resultset, "resultSetId", res->resultSetId);
3865
3866     yaz_log(log_details, "%p handle_srw_response got SRW response OK", c);
3867
3868     if (res->numberOfRecords)
3869         resultset->size = *res->numberOfRecords;
3870
3871     for (i = 0; i<res->num_records; i++)
3872     {
3873         int pos;
3874         Z_SRW_record *sru_rec;
3875         Z_SRW_diagnostic *diag = 0;
3876         int num_diag;
3877
3878         Z_NamePlusRecord *npr = (Z_NamePlusRecord *)
3879             odr_malloc(c->odr_in, sizeof(Z_NamePlusRecord));
3880
3881         if (res->records[i].recordPosition &&
3882             *res->records[i].recordPosition > 0)
3883             pos = *res->records[i].recordPosition - 1;
3884         else
3885             pos = *start + i;
3886
3887         sru_rec = &res->records[i];
3888
3889         npr->databaseName = 0;
3890         npr->which = Z_NamePlusRecord_databaseRecord;
3891         npr->u.databaseRecord = (Z_External *)
3892             odr_malloc(c->odr_in, sizeof(Z_External));
3893         npr->u.databaseRecord->descriptor = 0;
3894         npr->u.databaseRecord->direct_reference =
3895             odr_oiddup(c->odr_in, yaz_oid_recsyn_xml);
3896         npr->u.databaseRecord->which = Z_External_octet;
3897
3898         npr->u.databaseRecord->u.octet_aligned = (Odr_oct *)
3899             odr_malloc(c->odr_in, sizeof(Odr_oct));
3900         npr->u.databaseRecord->u.octet_aligned->buf = (unsigned char*)
3901             sru_rec->recordData_buf;
3902         npr->u.databaseRecord->u.octet_aligned->len =
3903             npr->u.databaseRecord->u.octet_aligned->size =
3904             sru_rec->recordData_len;
3905
3906         if (sru_rec->recordSchema
3907             && !strcmp(sru_rec->recordSchema,
3908                        "info:srw/schema/1/diagnostics-v1.1"))
3909         {
3910             sru_decode_surrogate_diagnostics(sru_rec->recordData_buf,
3911                                              sru_rec->recordData_len,
3912                                              &diag, &num_diag,
3913                                              resultset->odr);
3914         }
3915         record_cache_add(resultset, npr, pos, syntax, elementSetName,
3916                          sru_rec->recordSchema, diag);
3917     }
3918     if (res->num_diagnostics > 0)
3919         set_SRU_error(c, &res->diagnostics[0]);
3920     nmem = odr_extract_mem(c->odr_in);
3921     nmem_transfer(odr_getmem(resultset->odr), nmem);
3922     nmem_destroy(nmem);
3923 }
3924 #endif
3925
3926 #if YAZ_HAVE_XML2
3927 static void handle_srw_scan_response(ZOOM_connection c,
3928                                      Z_SRW_scanResponse *res)
3929 {
3930     NMEM nmem = odr_extract_mem(c->odr_in);
3931     ZOOM_scanset scan;
3932
3933     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
3934         return;
3935     scan = c->tasks->u.scan.scan;
3936
3937     if (res->num_diagnostics > 0)
3938         set_SRU_error(c, &res->diagnostics[0]);
3939
3940     scan->scan_response = 0;
3941     scan->srw_scan_response = res;
3942     nmem_transfer(odr_getmem(scan->odr), nmem);
3943
3944     ZOOM_options_set_int(scan->options, "number", res->num_terms);
3945     nmem_destroy(nmem);
3946 }
3947 #endif
3948
3949 #if YAZ_HAVE_XML2
3950 static void handle_http(ZOOM_connection c, Z_HTTP_Response *hres)
3951 {
3952     int ret = -1;
3953     const char *addinfo = 0;
3954     const char *connection_head = z_HTTP_header_lookup(hres->headers,
3955                                                        "Connection");
3956     ZOOM_connection_set_mask(c, 0);
3957     yaz_log(log_details, "%p handle_http", c);
3958
3959     if (!yaz_srw_check_content_type(hres))
3960         addinfo = "content-type";
3961     else
3962     {
3963         Z_SOAP *soap_package = 0;
3964         ODR o = c->odr_in;
3965         Z_SOAP_Handler soap_handlers[2] = {
3966             {YAZ_XMLNS_SRU_v1_1, 0, (Z_SOAP_fun) yaz_srw_codec},
3967             {0, 0, 0}
3968         };
3969         ret = z_soap_codec(o, &soap_package,
3970                            &hres->content_buf, &hres->content_len,
3971                            soap_handlers);
3972         if (!ret && soap_package->which == Z_SOAP_generic &&
3973             soap_package->u.generic->no == 0)
3974         {
3975             Z_SRW_PDU *sr = (Z_SRW_PDU*) soap_package->u.generic->p;
3976
3977             ZOOM_options_set(c->options, "sru_version", sr->srw_version);
3978             if (sr->which == Z_SRW_searchRetrieve_response)
3979                 handle_srw_response(c, sr->u.response);
3980             else if (sr->which == Z_SRW_scan_response)
3981                 handle_srw_scan_response(c, sr->u.scan_response);
3982             else
3983                 ret = -1;
3984         }
3985         else if (!ret && (soap_package->which == Z_SOAP_fault
3986                           || soap_package->which == Z_SOAP_error))
3987         {
3988             set_HTTP_error(c, hres->code,
3989                            soap_package->u.fault->fault_code,
3990                            soap_package->u.fault->fault_string);
3991         }
3992         else
3993             ret = -1;
3994     }
3995     if (ret)
3996     {
3997         if (hres->code != 200)
3998             set_HTTP_error(c, hres->code, 0, 0);
3999         else
4000             set_ZOOM_error(c, ZOOM_ERROR_DECODE, addinfo);
4001         do_close(c);
4002     }
4003     ZOOM_connection_remove_task(c);
4004     if (!strcmp(hres->version, "1.0"))
4005     {
4006         /* HTTP 1.0: only if Keep-Alive we stay alive.. */
4007         if (!connection_head || strcmp(connection_head, "Keep-Alive"))
4008             do_close(c);
4009     }
4010     else
4011     {
4012         /* HTTP 1.1: only if no close we stay alive .. */
4013         if (connection_head && !strcmp(connection_head, "close"))
4014             do_close(c);
4015     }
4016 }
4017 #endif
4018
4019 static int do_read(ZOOM_connection c)
4020 {
4021     int r, more;
4022     ZOOM_Event event;
4023
4024     event = ZOOM_Event_create(ZOOM_EVENT_RECV_DATA);
4025     ZOOM_connection_put_event(c, event);
4026
4027     r = cs_get(c->cs, &c->buf_in, &c->len_in);
4028     more = cs_more(c->cs);
4029     yaz_log(log_details, "%p do_read len=%d more=%d", c, r, more);
4030     if (r == 1)
4031         return 0;
4032     if (r <= 0)
4033     {
4034         if (!ZOOM_test_reconnect(c))
4035         {
4036             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
4037             do_close(c);
4038         }
4039     }
4040     else
4041     {
4042         Z_GDU *gdu;
4043         ZOOM_Event event;
4044
4045         odr_reset(c->odr_in);
4046         odr_setbuf(c->odr_in, c->buf_in, r, 0);
4047         event = ZOOM_Event_create(ZOOM_EVENT_RECV_APDU);
4048         ZOOM_connection_put_event(c, event);
4049
4050         if (!z_GDU(c->odr_in, &gdu, 0, 0))
4051         {
4052             int x;
4053             int err = odr_geterrorx(c->odr_in, &x);
4054             char msg[100];
4055             const char *element = odr_getelement(c->odr_in);
4056             yaz_snprintf(msg, sizeof(msg),
4057                     "ODR code %d:%d element=%s offset=%d",
4058                     err, x, element ? element : "<unknown>",
4059                     odr_offset(c->odr_in));
4060             set_ZOOM_error(c, ZOOM_ERROR_DECODE, msg);
4061             if (log_api)
4062             {
4063                 FILE *ber_file = yaz_log_file();
4064                 if (ber_file)
4065                     odr_dumpBER(ber_file, c->buf_in, r);
4066             }
4067             do_close(c);
4068         }
4069         else if (gdu->which == Z_GDU_Z3950)
4070             recv_apdu(c, gdu->u.z3950);
4071         else if (gdu->which == Z_GDU_HTTP_Response)
4072         {
4073 #if YAZ_HAVE_XML2
4074             handle_http(c, gdu->u.HTTP_Response);
4075 #else
4076             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
4077             do_close(c);
4078 #endif
4079         }
4080         c->reconnect_ok = 0;
4081     }
4082     return 1;
4083 }
4084
4085 static zoom_ret do_write_ex(ZOOM_connection c, char *buf_out, int len_out)
4086 {
4087     int r;
4088     ZOOM_Event event;
4089
4090     event = ZOOM_Event_create(ZOOM_EVENT_SEND_DATA);
4091     ZOOM_connection_put_event(c, event);
4092
4093     yaz_log(log_details, "%p do_write_ex len=%d", c, len_out);
4094     if ((r = cs_put(c->cs, buf_out, len_out)) < 0)
4095     {
4096         yaz_log(log_details, "%p do_write_ex write failed", c);
4097         if (ZOOM_test_reconnect(c))
4098         {
4099             return zoom_pending;
4100         }
4101         if (c->state == STATE_CONNECTING)
4102             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
4103         else
4104             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
4105         do_close(c);
4106         return zoom_complete;
4107     }
4108     else if (r == 1)
4109     {
4110         int mask = ZOOM_SELECT_EXCEPT;
4111         if (c->cs->io_pending & CS_WANT_WRITE)
4112             mask += ZOOM_SELECT_WRITE;
4113         if (c->cs->io_pending & CS_WANT_READ)
4114             mask += ZOOM_SELECT_READ;
4115         ZOOM_connection_set_mask(c, mask);
4116         yaz_log(log_details, "%p do_write_ex write incomplete mask=%d",
4117                 c, c->mask);
4118     }
4119     else
4120     {
4121         ZOOM_connection_set_mask(c, ZOOM_SELECT_READ|ZOOM_SELECT_EXCEPT);
4122         yaz_log(log_details, "%p do_write_ex write complete mask=%d",
4123                 c, c->mask);
4124     }
4125     return zoom_pending;
4126 }
4127
4128 static zoom_ret do_write(ZOOM_connection c)
4129 {
4130     return do_write_ex(c, c->buf_out, c->len_out);
4131 }
4132
4133
4134 ZOOM_API(const char *)
4135     ZOOM_connection_option_get(ZOOM_connection c, const char *key)
4136 {
4137     return ZOOM_options_get(c->options, key);
4138 }
4139
4140 ZOOM_API(const char *)
4141     ZOOM_connection_option_getl(ZOOM_connection c, const char *key, int *lenp)
4142 {
4143     return ZOOM_options_getl(c->options, key, lenp);
4144 }
4145
4146 ZOOM_API(void)
4147     ZOOM_connection_option_set(ZOOM_connection c, const char *key,
4148                                const char *val)
4149 {
4150     ZOOM_options_set(c->options, key, val);
4151 }
4152
4153 ZOOM_API(void)
4154     ZOOM_connection_option_setl(ZOOM_connection c, const char *key,
4155                                 const char *val, int len)
4156 {
4157     ZOOM_options_setl(c->options, key, val, len);
4158 }
4159
4160 ZOOM_API(const char *)
4161     ZOOM_resultset_option_get(ZOOM_resultset r, const char *key)
4162 {
4163     return ZOOM_options_get(r->options, key);
4164 }
4165
4166 ZOOM_API(void)
4167     ZOOM_resultset_option_set(ZOOM_resultset r, const char *key,
4168                               const char *val)
4169 {
4170     ZOOM_options_set(r->options, key, val);
4171 }
4172
4173
4174 ZOOM_API(int)
4175     ZOOM_connection_errcode(ZOOM_connection c)
4176 {
4177     return ZOOM_connection_error(c, 0, 0);
4178 }
4179
4180 ZOOM_API(const char *)
4181     ZOOM_connection_errmsg(ZOOM_connection c)
4182 {
4183     const char *msg;
4184     ZOOM_connection_error(c, &msg, 0);
4185     return msg;
4186 }
4187
4188 ZOOM_API(const char *)
4189     ZOOM_connection_addinfo(ZOOM_connection c)
4190 {
4191     const char *addinfo;
4192     ZOOM_connection_error(c, 0, &addinfo);
4193     return addinfo;
4194 }
4195
4196 ZOOM_API(const char *)
4197     ZOOM_connection_diagset(ZOOM_connection c)
4198 {
4199     const char *diagset;
4200     ZOOM_connection_error_x(c, 0, 0, &diagset);
4201     return diagset;
4202 }
4203
4204 ZOOM_API(const char *)
4205     ZOOM_diag_str(int error)
4206 {
4207     switch (error)
4208     {
4209     case ZOOM_ERROR_NONE:
4210         return "No error";
4211     case ZOOM_ERROR_CONNECT:
4212         return "Connect failed";
4213     case ZOOM_ERROR_MEMORY:
4214         return "Out of memory";
4215     case ZOOM_ERROR_ENCODE:
4216         return "Encoding failed";
4217     case ZOOM_ERROR_DECODE:
4218         return "Decoding failed";
4219     case ZOOM_ERROR_CONNECTION_LOST:
4220         return "Connection lost";
4221     case ZOOM_ERROR_INIT:
4222         return "Init rejected";
4223     case ZOOM_ERROR_INTERNAL:
4224         return "Internal failure";
4225     case ZOOM_ERROR_TIMEOUT:
4226         return "Timeout";
4227     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
4228         return "Unsupported protocol";
4229     case ZOOM_ERROR_UNSUPPORTED_QUERY:
4230         return "Unsupported query type";
4231     case ZOOM_ERROR_INVALID_QUERY:
4232         return "Invalid query";
4233     case ZOOM_ERROR_CQL_PARSE:
4234         return "CQL parsing error";
4235     case ZOOM_ERROR_CQL_TRANSFORM:
4236         return "CQL transformation error";
4237     case ZOOM_ERROR_CCL_CONFIG:
4238         return "CCL configuration error";
4239     case ZOOM_ERROR_CCL_PARSE:
4240         return "CCL parsing error";
4241     default:
4242         return diagbib1_str(error);
4243     }
4244 }
4245
4246 ZOOM_API(int)
4247     ZOOM_connection_error_x(ZOOM_connection c, const char **cp,
4248                             const char **addinfo, const char **diagset)
4249 {
4250     int error = c->error;
4251     if (cp)
4252     {
4253         if (!c->diagset || !strcmp(c->diagset, "ZOOM"))
4254             *cp = ZOOM_diag_str(error);
4255         else if (!strcmp(c->diagset, "HTTP"))
4256             *cp = z_HTTP_errmsg(c->error);
4257         else if (!strcmp(c->diagset, "Bib-1"))
4258             *cp = ZOOM_diag_str(error);
4259         else if (!strcmp(c->diagset, "info:srw/diagnostic/1"))
4260             *cp = yaz_diag_srw_str(c->error);
4261         else
4262             *cp = "Unknown error and diagnostic set";
4263     }
4264     if (addinfo)
4265         *addinfo = c->addinfo ? c->addinfo : "";
4266     if (diagset)
4267         *diagset = c->diagset ? c->diagset : "";
4268     return c->error;
4269 }
4270
4271 ZOOM_API(int)
4272     ZOOM_connection_error(ZOOM_connection c, const char **cp,
4273                           const char **addinfo)
4274 {
4275     return ZOOM_connection_error_x(c, cp, addinfo, 0);
4276 }
4277
4278 static void ZOOM_connection_do_io(ZOOM_connection c, int mask)
4279 {
4280     ZOOM_Event event = 0;
4281     int r = cs_look(c->cs);
4282     yaz_log(log_details, "%p ZOOM_connection_do_io mask=%d cs_look=%d",
4283             c, mask, r);
4284
4285     if (r == CS_NONE)
4286     {
4287         event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
4288         set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
4289         do_close(c);
4290         ZOOM_connection_put_event(c, event);
4291     }
4292     else if (r == CS_CONNECT)
4293     {
4294         int ret = ret = cs_rcvconnect(c->cs);
4295         yaz_log(log_details, "%p ZOOM_connection_do_io "
4296                 "cs_rcvconnect returned %d", c, ret);
4297         if (ret == 1)
4298         {
4299             int mask = ZOOM_SELECT_EXCEPT;
4300             if (c->cs->io_pending & CS_WANT_WRITE)
4301                 mask += ZOOM_SELECT_WRITE;
4302             if (c->cs->io_pending & CS_WANT_READ)
4303                 mask += ZOOM_SELECT_READ;
4304             ZOOM_connection_set_mask(c, mask);
4305             event = ZOOM_Event_create(ZOOM_EVENT_NONE);
4306             ZOOM_connection_put_event(c, event);
4307         }
4308         else if (ret == 0)
4309         {
4310             event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
4311             ZOOM_connection_put_event(c, event);
4312             get_cert(c);
4313             if (c->proto == PROTO_Z3950)
4314                 ZOOM_connection_send_init(c);
4315             else
4316             {
4317                 /* no init request for SRW .. */
4318                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
4319                 ZOOM_connection_remove_task(c);
4320                 ZOOM_connection_set_mask(c, 0);
4321                 ZOOM_connection_exec_task(c);
4322             }
4323             c->state = STATE_ESTABLISHED;
4324         }
4325         else
4326         {
4327             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
4328             do_close(c);
4329         }
4330     }
4331     else
4332     {
4333         if (mask & ZOOM_SELECT_EXCEPT)
4334         {
4335             if (!ZOOM_test_reconnect(c))
4336             {
4337                 set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
4338                 do_close(c);
4339             }
4340             return;
4341         }
4342         if (mask & ZOOM_SELECT_READ)
4343             do_read(c);
4344         if (c->cs && (mask & ZOOM_SELECT_WRITE))
4345             do_write(c);
4346     }
4347 }
4348
4349 ZOOM_API(int)
4350     ZOOM_connection_last_event(ZOOM_connection cs)
4351 {
4352     if (!cs)
4353         return ZOOM_EVENT_NONE;
4354     return cs->last_event;
4355 }
4356
4357
4358 static void cql2pqf_wrbuf_puts(const char *buf, void *client_data)
4359 {
4360     WRBUF wrbuf = (WRBUF) client_data;
4361     wrbuf_puts(wrbuf, buf);
4362 }
4363
4364 /*
4365  * Returns an xmalloc()d string containing RPN that corresponds to the
4366  * CQL passed in.  On error, sets the Connection object's error state
4367  * and returns a null pointer.
4368  * ### We could cache CQL parser and/or transformer in Connection.
4369  */
4370 static char *cql2pqf(ZOOM_connection c, const char *cql)
4371 {
4372     CQL_parser parser;
4373     int error;
4374     const char *cqlfile;
4375     cql_transform_t trans;
4376     char *result = 0;
4377
4378     parser = cql_parser_create();
4379     if ((error = cql_parser_string(parser, cql)) != 0) {
4380         cql_parser_destroy(parser);
4381         set_ZOOM_error(c, ZOOM_ERROR_CQL_PARSE, cql);
4382         return 0;
4383     }
4384
4385     cqlfile = ZOOM_connection_option_get(c, "cqlfile");
4386     if (cqlfile == 0)
4387     {
4388         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, "no CQL transform file");
4389     }
4390     else if ((trans = cql_transform_open_fname(cqlfile)) == 0)
4391     {
4392         char buf[512];
4393         sprintf(buf, "can't open CQL transform file '%.200s': %.200s",
4394                 cqlfile, strerror(errno));
4395         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4396     }
4397     else
4398     {
4399         WRBUF wrbuf_result = wrbuf_alloc();
4400         error = cql_transform(trans, cql_parser_result(parser),
4401                               cql2pqf_wrbuf_puts, wrbuf_result);
4402         if (error != 0) {
4403             char buf[512];
4404             const char *addinfo;
4405             error = cql_transform_error(trans, &addinfo);
4406             sprintf(buf, "%.200s (addinfo=%.200s)",
4407                     cql_strerror(error), addinfo);
4408             set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4409         }
4410         else
4411         {
4412             result = xstrdup(wrbuf_cstr(wrbuf_result));
4413         }
4414         cql_transform_close(trans);
4415         wrbuf_destroy(wrbuf_result);
4416     }
4417     cql_parser_destroy(parser);
4418     return result;
4419 }
4420
4421 ZOOM_API(int) ZOOM_connection_fire_event_timeout(ZOOM_connection c)
4422 {
4423     if (c->mask)
4424     {
4425         ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
4426         /* timeout and this connection was waiting */
4427         set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
4428         do_close(c);
4429         ZOOM_connection_put_event(c, event);
4430     }
4431     return 0;
4432 }
4433
4434 ZOOM_API(int)
4435     ZOOM_connection_process(ZOOM_connection c)
4436 {
4437     ZOOM_Event event;
4438     if (!c)
4439         return 0;
4440
4441     event = ZOOM_connection_get_event(c);
4442     if (event)
4443     {
4444         ZOOM_Event_destroy(event);
4445         return 1;
4446     }
4447     ZOOM_connection_exec_task(c);
4448     event = ZOOM_connection_get_event(c);
4449     if (event)
4450     {
4451         ZOOM_Event_destroy(event);
4452         return 1;
4453     }
4454     return 0;
4455 }
4456
4457 ZOOM_API(int)
4458     ZOOM_event_nonblock(int no, ZOOM_connection *cs)
4459 {
4460     int i;
4461
4462     yaz_log(log_details, "ZOOM_process_event(no=%d,cs=%p)", no, cs);
4463
4464     for (i = 0; i<no; i++)
4465     {
4466         ZOOM_connection c = cs[i];
4467
4468         if (c && ZOOM_connection_process(c))
4469             return i+1;
4470     }
4471     return 0;
4472 }
4473
4474 ZOOM_API(int) ZOOM_connection_fire_event_socket(ZOOM_connection c, int mask)
4475 {
4476     if (c->mask && mask)
4477         ZOOM_connection_do_io(c, mask);
4478     return 0;
4479 }
4480
4481 ZOOM_API(int) ZOOM_connection_get_socket(ZOOM_connection c)
4482 {
4483     if (c->cs)
4484         return cs_fileno(c->cs);
4485     return -1;
4486 }
4487
4488 ZOOM_API(int) ZOOM_connection_set_mask(ZOOM_connection c, int mask)
4489 {
4490     c->mask = mask;
4491     if (!c->cs)
4492         return -1;
4493     return 0;
4494 }
4495
4496 ZOOM_API(int) ZOOM_connection_get_mask(ZOOM_connection c)
4497 {
4498     if (c->cs)
4499         return c->mask;
4500     return 0;
4501 }
4502
4503 ZOOM_API(int) ZOOM_connection_get_timeout(ZOOM_connection c)
4504 {
4505     return ZOOM_options_get_int(c->options, "timeout", 30);
4506 }
4507
4508 /*
4509  * Local variables:
4510  * c-basic-offset: 4
4511  * indent-tabs-mode: nil
4512  * End:
4513  * vim: shiftwidth=4 tabstop=8 expandtab
4514  */
4515