src/zoom-c.c

   1 /*
   2  * Copyright (C) 1995-2005, Index Data ApS
   3  * See the file LICENSE for details.
   4  *
   5  * $Id: zoom-c.c,v 1.63 2006-02-19 18:36:10 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
  29 #if HAVE_SYS_TYPES_H
  30 #include <sys/types.h>
  31 #endif
  32 #if HAVE_SYS_TIME_H
  33 #include <sys/time.h>
  34 #endif
  35 #if HAVE_SYS_POLL_H
  36 #include <sys/poll.h>
  37 #endif
  38 #if HAVE_SYS_SELECT_H
  39 #include <sys/select.h>
  40 #endif
  41 #ifdef WIN32
  42 #include <winsock.h>
  43 #endif
  44
  45 static int log_api = 0;
  46 static int log_details = 0;
  47
  48 typedef enum {
  49     zoom_pending,
  50     zoom_complete
  51 } zoom_ret;
  52
  53 static zoom_ret ZOOM_connection_send_init (ZOOM_connection c);
  54 static zoom_ret do_write_ex (ZOOM_connection c, char *buf_out, int len_out);
  55 static char *cql2pqf(ZOOM_connection c, const char *cql);
  56
  57
  58 static void initlog()
  59 {
  60     static int log_level_initialized = 0;
  61     if (!log_level_initialized)
  62     {
  63         log_api = yaz_log_module_level("zoom");
  64         log_details = yaz_log_module_level("zoomdetails");
  65         log_level_initialized = 1;
  66     }
  67 }
  68
  69 static ZOOM_Event ZOOM_Event_create (int kind)
  70 {
  71     ZOOM_Event event = (ZOOM_Event) xmalloc (sizeof(*event));
  72     event->kind = kind;
  73     event->next = 0;
  74     event->prev = 0;
  75     return event;
  76 }
  77
  78 static void ZOOM_Event_destroy (ZOOM_Event event)
  79 {
  80     xfree (event);
  81 }
  82
  83 static void ZOOM_connection_put_event (ZOOM_connection c, ZOOM_Event event)
  84 {
  85     if (c->m_queue_back)
  86     {
  87         c->m_queue_back->prev = event;
  88         assert (c->m_queue_front);
  89     }
  90     else
  91     {
  92         assert (!c->m_queue_front);
  93         c->m_queue_front = event;
  94     }
  95     event->next = c->m_queue_back;
  96     event->prev = 0;
  97     c->m_queue_back = event;
  98 }
  99
 100 static ZOOM_Event ZOOM_connection_get_event(ZOOM_connection c)
 101 {
 102     ZOOM_Event event = c->m_queue_front;
 103     if (!event)
 104     {
 105         c->last_event = ZOOM_EVENT_NONE;
 106         return 0;
 107     }
 108     assert (c->m_queue_back);
 109     c->m_queue_front = event->prev;
 110     if (c->m_queue_front)
 111     {
 112         assert (c->m_queue_back);
 113         c->m_queue_front->next = 0;
 114     }
 115     else
 116         c->m_queue_back = 0;
 117     c->last_event = event->kind;
 118     return event;
 119 }
 120
 121
 122 static void set_dset_error (ZOOM_connection c, int error,
 123                             const char *dset,
 124                             const char *addinfo, const char *addinfo2)
 125 {
 126     char *cp;
 127
 128     xfree (c->addinfo);
 129     c->addinfo = 0;
 130     c->error = error;
 131     if (!c->diagset || strcmp(dset, c->diagset))
 132     {
 133         xfree(c->diagset);
 134         c->diagset = xstrdup(dset);
 135         /* remove integer part from SRW diagset .. */
 136         if ((cp = strrchr(c->diagset, '/')))
 137            *cp = '\0';
 138     }
 139     if (addinfo && addinfo2)
 140     {
 141         c->addinfo = (char*) xmalloc(strlen(addinfo) + strlen(addinfo2) + 2);
 142         strcpy(c->addinfo, addinfo);
 143         strcat(c->addinfo, addinfo2);
 144     }
 145     else if (addinfo)
 146         c->addinfo = xstrdup(addinfo);
 147     if (error)
 148         yaz_log(log_api, "%p set_dset_error %s %s:%d %s %s",
 149                 c, c->host_port ? c->host_port : "<>", dset, error,
 150                 addinfo ? addinfo : "",
 151                 addinfo2 ? addinfo2 : "");
 152 }
 153
 154 #if HAVE_XML2
 155 static void set_HTTP_error (ZOOM_connection c, int error,
 156                             const char *addinfo, const char *addinfo2)
 157 {
 158     set_dset_error(c, error, "HTTP", addinfo, addinfo2);
 159 }
 160 #endif
 161
 162 static void set_ZOOM_error (ZOOM_connection c, int error,
 163                             const char *addinfo)
 164 {
 165     set_dset_error(c, error, "ZOOM", addinfo, 0);
 166 }
 167
 168 static void clear_error (ZOOM_connection c)
 169 {
 170     /*
 171      * If an error is tied to an operation then it's ok to clear: for
 172      * example, a diagnostic returned from a search is cleared by a
 173      * subsequent search.  However, problems such as Connection Lost
 174      * or Init Refused are not cleared, because they are not
 175      * recoverable: doing another search doesn't help.
 176      */
 177     switch (c->error)
 178     {
 179     case ZOOM_ERROR_CONNECT:
 180     case ZOOM_ERROR_MEMORY:
 181     case ZOOM_ERROR_DECODE:
 182     case ZOOM_ERROR_CONNECTION_LOST:
 183     case ZOOM_ERROR_INIT:
 184     case ZOOM_ERROR_INTERNAL:
 185     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
 186         break;
 187     default:
 188         set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 189     }
 190 }
 191
 192 ZOOM_task ZOOM_connection_add_task (ZOOM_connection c, int which)
 193 {
 194     ZOOM_task *taskp = &c->tasks;
 195     while (*taskp)
 196         taskp = &(*taskp)->next;
 197     *taskp = (ZOOM_task) xmalloc (sizeof(**taskp));
 198     (*taskp)->running = 0;
 199     (*taskp)->which = which;
 200     (*taskp)->next = 0;
 201     clear_error (c);
 202     return *taskp;
 203 }
 204
 205 ZOOM_task ZOOM_connection_insert_task (ZOOM_connection c, int which)
 206 {
 207     ZOOM_task task = (ZOOM_task) xmalloc (sizeof(*task));
 208
 209     task->next = c->tasks;
 210     c->tasks = task;
 211
 212     task->running = 0;
 213     task->which = which;
 214     clear_error (c);
 215     return task;
 216 }
 217
 218 void ZOOM_connection_remove_task (ZOOM_connection c)
 219 {
 220     ZOOM_task task = c->tasks;
 221
 222     if (task)
 223     {
 224         c->tasks = task->next;
 225         switch (task->which)
 226         {
 227         case ZOOM_TASK_SEARCH:
 228             ZOOM_resultset_destroy (task->u.search.resultset);
 229             break;
 230         case ZOOM_TASK_RETRIEVE:
 231             ZOOM_resultset_destroy (task->u.retrieve.resultset);
 232             break;
 233         case ZOOM_TASK_CONNECT:
 234             break;
 235         case ZOOM_TASK_SCAN:
 236             ZOOM_scanset_destroy (task->u.scan.scan);
 237             break;
 238         case ZOOM_TASK_PACKAGE:
 239             ZOOM_package_destroy (task->u.package);
 240             break;
 241         case ZOOM_TASK_SORT:
 242             ZOOM_resultset_destroy (task->u.sort.resultset);
 243             ZOOM_query_destroy(task->u.sort.q);
 244             break;
 245         default:
 246             assert (0);
 247         }
 248         xfree (task);
 249     }
 250 }
 251
 252 static int ZOOM_connection_exec_task (ZOOM_connection c);
 253
 254 void ZOOM_connection_remove_tasks (ZOOM_connection c)
 255 {
 256     while (c->tasks)
 257         ZOOM_connection_remove_task(c);
 258 }
 259
 260 static ZOOM_record record_cache_lookup (ZOOM_resultset r, int pos);
 261
 262 ZOOM_API(ZOOM_connection)
 263 ZOOM_connection_create (ZOOM_options options)
 264 {
 265     ZOOM_connection c = (ZOOM_connection) xmalloc (sizeof(*c));
 266
 267     initlog();
 268
 269     yaz_log(log_api, "%p ZOOM_connection_create", c);
 270
 271     c->proto = PROTO_Z3950;
 272     c->cs = 0;
 273     c->mask = 0;
 274     c->reconnect_ok = 0;
 275     c->state = STATE_IDLE;
 276     c->addinfo = 0;
 277     c->diagset = 0;
 278     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 279     c->buf_in = 0;
 280     c->len_in = 0;
 281     c->buf_out = 0;
 282     c->len_out = 0;
 283     c->resultsets = 0;
 284
 285     c->options = ZOOM_options_create_with_parent(options);
 286
 287     c->host_port = 0;
 288     c->path = 0;
 289     c->proxy = 0;
 290
 291     c->charset = c->lang = 0;
 292
 293     c->cookie_out = 0;
 294     c->cookie_in = 0;
 295     c->client_IP = 0;
 296     c->tasks = 0;
 297
 298     c->odr_in = odr_createmem (ODR_DECODE);
 299     c->odr_out = odr_createmem (ODR_ENCODE);
 300
 301     c->async = 0;
 302     c->support_named_resultsets = 0;
 303     c->last_event = ZOOM_EVENT_NONE;
 304
 305     c->m_queue_front = 0;
 306     c->m_queue_back = 0;
 307     return c;
 308 }
 309
 310 /* set database names. Take local databases (if set); otherwise
 311    take databases given in ZURL (if set); otherwise use Default */
 312 static char **set_DatabaseNames (ZOOM_connection con, ZOOM_options options,
 313                                  int *num)
 314 {
 315     char **databaseNames;
 316     const char *cp = ZOOM_options_get (options, "databaseName");
 317
 318     if (!cp || !*cp)
 319     {
 320         if (strncmp (con->host_port, "unix:", 5) == 0)
 321             cp = strchr(con->host_port+5, ':');
 322         else
 323             cp = strchr(con->host_port, '/');
 324         if (cp)
 325             cp++;
 326     }
 327     if (!cp)
 328         cp = "Default";
 329     nmem_strsplit(con->odr_out->mem, "+", cp,  &databaseNames, num);
 330     return databaseNames;
 331 }
 332
 333 ZOOM_API(ZOOM_connection)
 334 ZOOM_connection_new (const char *host, int portnum)
 335 {
 336     ZOOM_connection c = ZOOM_connection_create (0);
 337
 338     ZOOM_connection_connect (c, host, portnum);
 339     return c;
 340 }
 341
 342 ZOOM_API(void)
 343 ZOOM_connection_connect(ZOOM_connection c,
 344                         const char *host, int portnum)
 345 {
 346     const char *val;
 347     ZOOM_task task;
 348
 349     initlog();
 350
 351     yaz_log(log_api, "%p ZOOM_connection_connect host=%s portnum=%d",
 352             c, host, portnum);
 353
 354     if (c->cs)
 355     {
 356         yaz_log(log_details, "%p ZOOM_connection_connect reconnect ok", c);
 357         c->reconnect_ok = 1;
 358         return;
 359     }
 360     yaz_log(log_details, "%p ZOOM_connection_connect connect", c);
 361     xfree (c->proxy);
 362     val = ZOOM_options_get (c->options, "proxy");
 363     if (val && *val)
 364     {
 365         yaz_log(log_details, "%p ZOOM_connection_connect proxy=%s", c, val);
 366         c->proxy = xstrdup (val);
 367     }
 368     else
 369         c->proxy = 0;
 370
 371     xfree (c->charset);
 372     val = ZOOM_options_get (c->options, "charset");
 373     if (val && *val)
 374     {
 375         yaz_log(log_details, "%p ZOOM_connection_connect charset=%s", c, val);
 376         c->charset = xstrdup (val);
 377     }
 378     else
 379         c->charset = 0;
 380
 381     xfree (c->lang);
 382     val = ZOOM_options_get (c->options, "lang");
 383     if (val && *val)
 384     {
 385         yaz_log(log_details, "%p ZOOM_connection_connect lang=%s", c, val);
 386         c->lang = xstrdup (val);
 387     }
 388     else
 389         c->lang = 0;
 390
 391     xfree (c->host_port);
 392     if (portnum)
 393     {
 394         char hostn[128];
 395         sprintf (hostn, "%.80s:%d", host, portnum);
 396         c->host_port = xstrdup(hostn);
 397     }
 398     else
 399         c->host_port = xstrdup(host);
 400
 401     {
 402         /*
 403          * If the "<scheme>:" part of the host string is preceded by one
 404          * or more comma-separated <name>=<value> pairs, these are taken
 405          * to be options to be set on the connection object.  Among other
 406          * applications, this facility can be used to embed authentication
 407          * in a host string:
 408          *          user=admin,password=secret,tcp:localhost:9999
 409          */
 410         char *remainder = c->host_port;
 411         char *pcolon = strchr(remainder, ':');
 412         char *pcomma;
 413         char *pequals;
 414         while ((pcomma = strchr(remainder, ',')) != 0 &&
 415                (pcolon == 0 || pcomma < pcolon)) {
 416             *pcomma = '\0';
 417             if ((pequals = strchr(remainder, '=')) != 0) {
 418                 *pequals = '\0';
 419                 /*printf("# setting '%s'='%s'\n", remainder, pequals+1);*/
 420                 ZOOM_connection_option_set(c, remainder, pequals+1);
 421             }
 422             remainder = pcomma+1;
 423         }
 424
 425         if (remainder != c->host_port) {
 426             xfree(c->host_port);
 427             c->host_port = xstrdup(remainder);
 428             /*printf("# reset hp='%s'\n", remainder);*/
 429         }
 430     }
 431
 432     ZOOM_options_set(c->options, "host", c->host_port);
 433
 434     val = ZOOM_options_get (c->options, "cookie");
 435     if (val && *val)
 436     {
 437         yaz_log(log_details, "%p ZOOM_connection_connect cookie=%s", c, val);
 438         c->cookie_out = xstrdup (val);
 439     }
 440
 441     val = ZOOM_options_get (c->options, "clientIP");
 442     if (val && *val)
 443     {
 444         yaz_log(log_details, "%p ZOOM_connection_connect clientIP=%s",
 445                 c, val);
 446         c->client_IP = xstrdup (val);
 447     }
 448
 449     c->async = ZOOM_options_get_bool (c->options, "async", 0);
 450     yaz_log(log_details, "%p ZOOM_connection_connect async=%d", c, c->async);
 451
 452     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 453
 454     task = ZOOM_connection_add_task (c, ZOOM_TASK_CONNECT);
 455
 456     if (!c->async)
 457     {
 458         while (ZOOM_event (1, &c))
 459             ;
 460     }
 461 }
 462
 463 ZOOM_API(ZOOM_query)
 464 ZOOM_query_create(void)
 465 {
 466     ZOOM_query s = (ZOOM_query) xmalloc (sizeof(*s));
 467
 468     yaz_log(log_details, "%p ZOOM_query_create", s);
 469     s->refcount = 1;
 470     s->z_query = 0;
 471     s->sort_spec = 0;
 472     s->odr = odr_createmem (ODR_ENCODE);
 473     s->query_string = 0;
 474
 475     return s;
 476 }
 477
 478 ZOOM_API(void)
 479 ZOOM_query_destroy(ZOOM_query s)
 480 {
 481     if (!s)
 482         return;
 483
 484     (s->refcount)--;
 485     yaz_log(log_details, "%p ZOOM_query_destroy count=%d", s, s->refcount);
 486     if (s->refcount == 0)
 487     {
 488         odr_destroy (s->odr);
 489         xfree (s);
 490     }
 491 }
 492
 493 ZOOM_API(int)
 494 ZOOM_query_prefix(ZOOM_query s, const char *str)
 495 {
 496     s->query_string = odr_strdup(s->odr, str);
 497     s->z_query = (Z_Query *) odr_malloc (s->odr, sizeof(*s->z_query));
 498     s->z_query->which = Z_Query_type_1;
 499     s->z_query->u.type_1 =  p_query_rpn(s->odr, PROTO_Z3950, str);
 500     if (!s->z_query->u.type_1)
 501     {
 502         yaz_log(log_details, "%p ZOOM_query_prefix str=%s failed", s, str);
 503         s->z_query = 0;
 504         return -1;
 505     }
 506     yaz_log(log_details, "%p ZOOM_query_prefix str=%s", s, str);
 507     return 0;
 508 }
 509
 510 ZOOM_API(int)
 511 ZOOM_query_cql(ZOOM_query s, const char *str)
 512 {
 513     Z_External *ext;
 514
 515     s->query_string = odr_strdup(s->odr, str);
 516
 517     ext = (Z_External *) odr_malloc(s->odr, sizeof(*ext));
 518     ext->direct_reference = odr_getoidbystr(s->odr, "1.2.840.10003.16.2");
 519     ext->indirect_reference = 0;
 520     ext->descriptor = 0;
 521     ext->which = Z_External_CQL;
 522     ext->u.cql = s->query_string;
 523
 524     s->z_query = (Z_Query *) odr_malloc (s->odr, sizeof(*s->z_query));
 525     s->z_query->which = Z_Query_type_104;
 526     s->z_query->u.type_104 =  ext;
 527
 528     yaz_log(log_details, "%p ZOOM_query_cql str=%s", s, str);
 529
 530     return 0;
 531 }
 532
 533 /*
 534  * Translate the CQL string client-side into RPN which is passed to
 535  * the server.  This is useful for server's that don't themselves
 536  * support CQL, for which ZOOM_query_cql() is useless.  `conn' is used
 537  * only as a place to stash diagnostics if compilation fails; if this
 538  * information is not needed, a null pointer may be used.
 539  */
 540 ZOOM_API(int)
 541 ZOOM_query_cql2rpn(ZOOM_query s, const char *str, ZOOM_connection conn)
 542 {
 543     char *rpn;
 544     int ret;
 545
 546     yaz_log(log_details, "%p ZOOM_query_cql2rpn str=%s conn=%p", s, str, conn);
 547     if (conn == 0)
 548         conn = ZOOM_connection_create(0);
 549
 550     if ((rpn = cql2pqf(conn, str)) == 0)
 551         return -1;
 552
 553     ret = ZOOM_query_prefix(s, rpn);
 554     xfree(rpn);
 555     return ret;
 556 }
 557
 558 ZOOM_API(int)
 559 ZOOM_query_sortby(ZOOM_query s, const char *criteria)
 560 {
 561     s->sort_spec = yaz_sort_spec (s->odr, criteria);
 562     if (!s->sort_spec)
 563     {
 564         yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s failed",
 565                 s, criteria);
 566         return -1;
 567     }
 568     yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s", s, criteria);
 569     return 0;
 570 }
 571
 572 static zoom_ret do_write(ZOOM_connection c);
 573
 574 ZOOM_API(void)
 575 ZOOM_connection_destroy(ZOOM_connection c)
 576 {
 577     ZOOM_resultset r;
 578     if (!c)
 579         return;
 580     yaz_log(log_api, "%p ZOOM_connection_destroy", c);
 581     if (c->cs)
 582         cs_close (c->cs);
 583     for (r = c->resultsets; r; r = r->next)
 584         r->connection = 0;
 585
 586     xfree (c->buf_in);
 587     xfree (c->addinfo);
 588     xfree (c->diagset);
 589     odr_destroy (c->odr_in);
 590     odr_destroy (c->odr_out);
 591     ZOOM_options_destroy (c->options);
 592     ZOOM_connection_remove_tasks (c);
 593     xfree (c->host_port);
 594     xfree (c->path);
 595     xfree (c->proxy);
 596     xfree (c->charset);
 597     xfree (c->lang);
 598     xfree (c->cookie_out);
 599     xfree (c->cookie_in);
 600     xfree (c->client_IP);
 601     xfree (c);
 602 }
 603
 604 void ZOOM_resultset_addref (ZOOM_resultset r)
 605 {
 606     if (r)
 607     {
 608         (r->refcount)++;
 609         yaz_log(log_details, "%p ZOOM_resultset_addref count=%d",
 610                 r, r->refcount);
 611     }
 612 }
 613
 614 ZOOM_resultset ZOOM_resultset_create ()
 615 {
 616     ZOOM_resultset r = (ZOOM_resultset) xmalloc (sizeof(*r));
 617
 618     initlog();
 619
 620     yaz_log(log_details, "%p ZOOM_resultset_create", r);
 621     r->refcount = 1;
 622     r->size = 0;
 623     r->odr = odr_createmem (ODR_ENCODE);
 624     r->start = 0;
 625     r->piggyback = 1;
 626     r->setname = 0;
 627     r->schema = 0;
 628     r->count = 0;
 629     r->step = 0;
 630     r->record_cache = 0;
 631     r->r_sort_spec = 0;
 632     r->query = 0;
 633     r->connection = 0;
 634     r->next = 0;
 635     return r;
 636 }
 637
 638 ZOOM_API(ZOOM_resultset)
 639 ZOOM_connection_search_pqf(ZOOM_connection c, const char *q)
 640 {
 641     ZOOM_resultset r;
 642     ZOOM_query s = ZOOM_query_create();
 643
 644     ZOOM_query_prefix (s, q);
 645
 646     r = ZOOM_connection_search (c, s);
 647     ZOOM_query_destroy (s);
 648     return r;
 649 }
 650
 651 ZOOM_API(ZOOM_resultset)
 652 ZOOM_connection_search(ZOOM_connection c, ZOOM_query q)
 653 {
 654     ZOOM_resultset r = ZOOM_resultset_create ();
 655     ZOOM_task task;
 656     const char *cp;
 657
 658     yaz_log(log_api, "%p ZOOM_connection_search set %p query %p", c, r, q);
 659     r->r_sort_spec = q->sort_spec;
 660     r->query = q;
 661
 662     r->options = ZOOM_options_create_with_parent(c->options);
 663
 664     r->start = ZOOM_options_get_int(r->options, "start", 0);
 665     r->count = ZOOM_options_get_int(r->options, "count", 0);
 666     {
 667         /* If "presentChunk" is defined use that; otherwise "step" */
 668         const char *cp = ZOOM_options_get (r->options, "presentChunk");
 669         r->step = ZOOM_options_get_int(r->options,
 670                                        (cp != 0 ? "presentChunk": "step"), 0);
 671     }
 672     r->piggyback = ZOOM_options_get_bool (r->options, "piggyback", 1);
 673     cp = ZOOM_options_get (r->options, "setname");
 674     if (cp)
 675         r->setname = xstrdup(cp);
 676     cp = ZOOM_options_get (r->options, "schema");
 677     if (cp)
 678         r->schema = xstrdup(cp);
 679
 680     r->connection = c;
 681
 682     r->next = c->resultsets;
 683     c->resultsets = r;
 684
 685     if (c->host_port && c->proto == PROTO_HTTP)
 686     {
 687         if (!c->cs)
 688         {
 689             yaz_log(log_details, "ZOOM_connection_search: no comstack");
 690             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 691         }
 692         else
 693         {
 694             yaz_log(log_details, "ZOOM_connection_search: reconnect");
 695             c->reconnect_ok = 1;
 696         }
 697     }
 698
 699     task = ZOOM_connection_add_task (c, ZOOM_TASK_SEARCH);
 700     task->u.search.resultset = r;
 701     ZOOM_resultset_addref (r);
 702
 703     (q->refcount)++;
 704
 705     if (!c->async)
 706     {
 707         while (ZOOM_event (1, &c))
 708             ;
 709     }
 710     return r;
 711 }
 712
 713 /*
 714  * This is the old result-set sorting API, which is maintained only
 715  * for the sake of binary compatibility.  There is no reason ever to
 716  * use this rather than ZOOM_resultset_sort1().
 717  */
 718 ZOOM_API(void)
 719 ZOOM_resultset_sort(ZOOM_resultset r,
 720                     const char *sort_type, const char *sort_spec)
 721 {
 722     (void) ZOOM_resultset_sort1(r, sort_type, sort_spec);
 723 }
 724
 725 ZOOM_API(int)
 726 ZOOM_resultset_sort1(ZOOM_resultset r,
 727                      const char *sort_type, const char *sort_spec)
 728 {
 729     ZOOM_connection c = r->connection;
 730     ZOOM_task task;
 731     ZOOM_query newq;
 732
 733     newq = ZOOM_query_create();
 734     if (ZOOM_query_sortby(newq, sort_spec) < 0)
 735         return -1;
 736
 737     yaz_log(log_api, "%p ZOOM_resultset_sort r=%p sort_type=%s sort_spec=%s",
 738             r, r, sort_type, sort_spec);
 739     if (!c)
 740         return 0;
 741
 742     if (c->host_port && c->proto == PROTO_HTTP)
 743     {
 744         if (!c->cs)
 745         {
 746             yaz_log(log_details, "%p ZOOM_resultset_sort: no comstack", r);
 747             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 748         }
 749         else
 750         {
 751             yaz_log(log_details, "%p ZOOM_resultset_sort: prepare reconnect",
 752                     r);
 753             c->reconnect_ok = 1;
 754         }
 755     }
 756
 757     ZOOM_resultset_cache_reset(r);
 758     task = ZOOM_connection_add_task (c, ZOOM_TASK_SORT);
 759     task->u.sort.resultset = r;
 760     task->u.sort.q = newq;
 761
 762     ZOOM_resultset_addref (r);
 763
 764     if (!c->async)
 765     {
 766         while (ZOOM_event (1, &c))
 767             ;
 768     }
 769
 770     return 0;
 771 }
 772
 773 ZOOM_API(void)
 774     ZOOM_resultset_cache_reset(ZOOM_resultset r)
 775 {
 776     ZOOM_record_cache rc;
 777
 778     for (rc = r->record_cache; rc; rc = rc->next)
 779     {
 780         if (rc->rec.wrbuf_marc)
 781             wrbuf_free (rc->rec.wrbuf_marc, 1);
 782         if (rc->rec.wrbuf_iconv)
 783             wrbuf_free (rc->rec.wrbuf_iconv, 1);
 784         if (rc->rec.wrbuf_opac)
 785             wrbuf_free (rc->rec.wrbuf_opac, 1);
 786     }
 787     r->record_cache = 0;
 788 }
 789
 790 ZOOM_API(void)
 791 ZOOM_resultset_destroy(ZOOM_resultset r)
 792 {
 793     if (!r)
 794         return;
 795     (r->refcount)--;
 796     yaz_log(log_details, "%p ZOOM_resultset_destroy r=%p count=%d",
 797             r, r, r->refcount);
 798     if (r->refcount == 0)
 799     {
 800         ZOOM_resultset_cache_reset(r);
 801
 802         if (r->connection)
 803         {
 804             /* remove ourselves from the resultsets in connection */
 805             ZOOM_resultset *rp = &r->connection->resultsets;
 806             while (1)
 807             {
 808                 assert (*rp);   /* we must be in this list!! */
 809                 if (*rp == r)
 810                 {   /* OK, we're here - take us out of it */
 811                     *rp = (*rp)->next;
 812                     break;
 813                 }
 814                 rp = &(*rp)->next;
 815             }
 816         }
 817         ZOOM_query_destroy (r->query);
 818         ZOOM_options_destroy (r->options);
 819         odr_destroy (r->odr);
 820         xfree (r->setname);
 821         xfree (r->schema);
 822         xfree (r);
 823     }
 824 }
 825
 826 ZOOM_API(size_t)
 827 ZOOM_resultset_size (ZOOM_resultset r)
 828 {
 829     return r->size;
 830 }
 831
 832 static void do_close (ZOOM_connection c)
 833 {
 834     if (c->cs)
 835         cs_close(c->cs);
 836     c->cs = 0;
 837     c->mask = 0;
 838     c->state = STATE_IDLE;
 839 }
 840
 841 static void ZOOM_resultset_retrieve (ZOOM_resultset r,
 842                                      int force_sync, int start, int count)
 843 {
 844     ZOOM_task task;
 845     ZOOM_connection c;
 846     const char *cp;
 847
 848     if (!r)
 849         return;
 850     yaz_log(log_details, "%p ZOOM_resultset_retrieve force_sync=%d start=%d"
 851             " count=%d", r, force_sync, start, count);
 852     c = r->connection;
 853     if (!c)
 854         return;
 855
 856     if (c->host_port && c->proto == PROTO_HTTP)
 857     {
 858         if (!c->cs)
 859         {
 860             yaz_log(log_details, "%p ZOOM_resultset_retrieve: no comstack", r);
 861             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 862         }
 863         else
 864         {
 865             yaz_log(log_details, "%p ZOOM_resultset_retrieve: prepare "
 866                     "reconnect", r);
 867             c->reconnect_ok = 1;
 868         }
 869     }
 870     task = ZOOM_connection_add_task (c, ZOOM_TASK_RETRIEVE);
 871     task->u.retrieve.resultset = r;
 872     task->u.retrieve.start = start;
 873     task->u.retrieve.count = count;
 874
 875     cp = ZOOM_options_get (r->options, "schema");
 876     if (cp)
 877     {
 878         if (!r->schema || strcmp(r->schema, cp))
 879         {
 880             xfree(r->schema);
 881             r->schema = xstrdup(cp);
 882         }
 883     }
 884
 885     ZOOM_resultset_addref (r);
 886
 887     if (!r->connection->async || force_sync)
 888         while (r->connection && ZOOM_event (1, &r->connection))
 889             ;
 890 }
 891
 892 ZOOM_API(void)
 893 ZOOM_resultset_records (ZOOM_resultset r, ZOOM_record *recs,
 894                         size_t start, size_t count)
 895 {
 896     int force_present = 0;
 897
 898     if (!r)
 899         return ;
 900     yaz_log(log_api, "%p ZOOM_resultset_records r=%p start=%d count=%d",
 901             r, r, start, count);
 902     if (count && recs)
 903         force_present = 1;
 904     ZOOM_resultset_retrieve (r, force_present, start, count);
 905     if (force_present)
 906     {
 907         size_t i;
 908         for (i = 0; i< count; i++)
 909             recs[i] = ZOOM_resultset_record_immediate (r, i+start);
 910     }
 911 }
 912
 913 static void get_cert(ZOOM_connection c)
 914 {
 915     char *cert_buf;
 916     int cert_len;
 917
 918     if (cs_get_peer_certificate_x509(c->cs, &cert_buf, &cert_len))
 919     {
 920         ZOOM_connection_option_setl(c, "sslPeerCert",
 921                                     cert_buf, cert_len);
 922         xfree(cert_buf);
 923     }
 924 }
 925
 926 static zoom_ret do_connect (ZOOM_connection c)
 927 {
 928     void *add;
 929     const char *effective_host;
 930
 931     if (c->proxy)
 932         effective_host = c->proxy;
 933     else
 934         effective_host = c->host_port;
 935
 936     yaz_log(log_details, "%p do_connect effective_host=%s", c, effective_host);
 937
 938     if (c->cs)
 939         cs_close(c->cs);
 940     c->cs = cs_create_host (effective_host, 0, &add);
 941
 942     if (c->cs && c->cs->protocol == PROTO_HTTP)
 943     {
 944 #if HAVE_XML2
 945         const char *path = 0;
 946
 947         c->proto = PROTO_HTTP;
 948         cs_get_host_args(c->host_port, &path);
 949         xfree(c->path);
 950         c->path = (char*) xmalloc(strlen(path)+2);
 951         c->path[0] = '/';
 952         strcpy (c->path+1, path);
 953 #else
 954         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_PROTOCOL, "SRW");
 955         do_close(c);
 956         return zoom_complete;
 957 #endif
 958     }
 959     if (c->cs)
 960     {
 961         int ret = cs_connect (c->cs, add);
 962         if (ret == 0)
 963         {
 964             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
 965             ZOOM_connection_put_event(c, event);
 966             get_cert(c);
 967             if (c->proto == PROTO_Z3950)
 968                 ZOOM_connection_send_init(c);
 969             else
 970             {
 971                 /* no init request for SRW .. */
 972                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
 973                 ZOOM_connection_remove_task (c);
 974                 c->mask = 0;
 975                 ZOOM_connection_exec_task (c);
 976             }
 977             c->state = STATE_ESTABLISHED;
 978             return zoom_pending;
 979         }
 980         else if (ret > 0)
 981         {
 982             c->state = STATE_CONNECTING;
 983             c->mask = ZOOM_SELECT_EXCEPT;
 984             if (c->cs->io_pending & CS_WANT_WRITE)
 985                 c->mask += ZOOM_SELECT_WRITE;
 986             if (c->cs->io_pending & CS_WANT_READ)
 987                 c->mask += ZOOM_SELECT_READ;
 988             return zoom_pending;
 989         }
 990     }
 991     c->state = STATE_IDLE;
 992     set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
 993     return zoom_complete;
 994 }
 995
 996 int z3950_connection_socket(ZOOM_connection c)
 997 {
 998     if (c->cs)
 999         return cs_fileno(c->cs);
1000     return -1;
1001 }
1002
1003 int z3950_connection_mask(ZOOM_connection c)
1004 {
1005     if (c->cs)
1006         return c->mask;
1007     return 0;
1008 }
1009
1010 static void otherInfo_attach (ZOOM_connection c, Z_APDU *a, ODR out)
1011 {
1012     int i;
1013     for (i = 0; i<200; i++)
1014     {
1015         size_t len;
1016         Z_OtherInformation **oi;
1017         char buf[80];
1018         const char *val;
1019         const char *cp;
1020         int oidval;
1021
1022         sprintf (buf, "otherInfo%d", i);
1023         val = ZOOM_options_get (c->options, buf);
1024         if (!val)
1025             break;
1026         cp = strchr(val, ':');
1027         if (!cp)
1028             continue;
1029         len = cp - val;
1030         if (len >= sizeof(buf))
1031             len = sizeof(buf)-1;
1032         memcpy (buf, val, len);
1033         buf[len] = '\0';
1034         oidval = oid_getvalbyname (buf);
1035         if (oidval == VAL_NONE)
1036             continue;
1037
1038         yaz_oi_APDU(a, &oi);
1039         yaz_oi_set_string_oidval(oi, out, oidval, 1, cp+1);
1040     }
1041 }
1042
1043 static int encode_APDU(ZOOM_connection c, Z_APDU *a, ODR out)
1044 {
1045     assert (a);
1046     if (c->cookie_out)
1047     {
1048         Z_OtherInformation **oi;
1049         yaz_oi_APDU(a, &oi);
1050         yaz_oi_set_string_oidval(oi, out, VAL_COOKIE, 1, c->cookie_out);
1051     }
1052     if (c->client_IP)
1053     {
1054         Z_OtherInformation **oi;
1055         yaz_oi_APDU(a, &oi);
1056         yaz_oi_set_string_oidval(oi, out, VAL_CLIENT_IP, 1, c->client_IP);
1057     }
1058     otherInfo_attach (c, a, out);
1059     if (!z_APDU(out, &a, 0, 0))
1060     {
1061         FILE *outf = fopen("/tmp/apdu.txt", "a");
1062         if (a && outf)
1063         {
1064             ODR odr_pr = odr_createmem(ODR_PRINT);
1065             fprintf (outf, "a=%p\n", a);
1066             odr_setprint(odr_pr, outf);
1067             z_APDU(odr_pr, &a, 0, 0);
1068             odr_destroy(odr_pr);
1069         }
1070         yaz_log(log_api, "%p encoding_APDU: encoding failed", c);
1071         set_ZOOM_error(c, ZOOM_ERROR_ENCODE, 0);
1072         odr_reset(out);
1073         return -1;
1074     }
1075     yaz_log(log_details, "%p encoding_APDU encoding OK", c);
1076     return 0;
1077 }
1078
1079 static zoom_ret send_APDU (ZOOM_connection c, Z_APDU *a)
1080 {
1081     ZOOM_Event event;
1082     assert (a);
1083     if (encode_APDU(c, a, c->odr_out))
1084         return zoom_complete;
1085     yaz_log(log_details, "%p send APDU type=%d", c, a->which);
1086     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1087     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
1088     ZOOM_connection_put_event (c, event);
1089     odr_reset(c->odr_out);
1090     return do_write (c);
1091 }
1092
1093 /* returns 1 if PDU was sent OK (still pending )
1094            0 if PDU was not sent OK (nothing to wait for)
1095 */
1096
1097 static zoom_ret ZOOM_connection_send_init (ZOOM_connection c)
1098 {
1099     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_initRequest);
1100     Z_InitRequest *ireq = apdu->u.initRequest;
1101     Z_IdAuthentication *auth = (Z_IdAuthentication *)
1102         odr_malloc(c->odr_out, sizeof(*auth));
1103     const char *auth_groupId = ZOOM_options_get (c->options, "group");
1104     const char *auth_userId = ZOOM_options_get (c->options, "user");
1105     const char *auth_password = ZOOM_options_get (c->options, "password");
1106     char *version;
1107
1108     /* support the pass for backwards compatibility */
1109     if (!auth_password)
1110         auth_password = ZOOM_options_get (c->options, "pass");
1111
1112     ODR_MASK_SET(ireq->options, Z_Options_search);
1113     ODR_MASK_SET(ireq->options, Z_Options_present);
1114     ODR_MASK_SET(ireq->options, Z_Options_scan);
1115     ODR_MASK_SET(ireq->options, Z_Options_sort);
1116     ODR_MASK_SET(ireq->options, Z_Options_extendedServices);
1117     ODR_MASK_SET(ireq->options, Z_Options_namedResultSets);
1118
1119     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_1);
1120     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_2);
1121     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_3);
1122
1123     /* Index Data's Z39.50 Implementor Id is 81 */
1124     ireq->implementationId = odr_prepend(c->odr_out,
1125         ZOOM_options_get(c->options, "implementationId"),
1126         odr_prepend(c->odr_out, "81", ireq->implementationId));
1127
1128     ireq->implementationName = odr_prepend(c->odr_out,
1129         ZOOM_options_get(c->options, "implementationName"),
1130         odr_prepend(c->odr_out, "ZOOM-C", ireq->implementationName));
1131
1132     version = odr_strdup(c->odr_out, "$Revision: 1.63 $");
1133     if (strlen(version) > 10)   /* check for unexpanded CVS strings */
1134         version[strlen(version)-2] = '\0';
1135     ireq->implementationVersion = odr_prepend(c->odr_out,
1136         ZOOM_options_get(c->options, "implementationVersion"),
1137         odr_prepend(c->odr_out, &version[11], ireq->implementationVersion));
1138
1139     *ireq->maximumRecordSize =
1140         ZOOM_options_get_int (c->options, "maximumRecordSize", 1024*1024);
1141     *ireq->preferredMessageSize =
1142         ZOOM_options_get_int (c->options, "preferredMessageSize", 1024*1024);
1143
1144     if (auth_groupId || auth_password)
1145     {
1146         Z_IdPass *pass = (Z_IdPass *) odr_malloc(c->odr_out, sizeof(*pass));
1147         int i = 0;
1148         pass->groupId = 0;
1149         if (auth_groupId && *auth_groupId)
1150         {
1151             pass->groupId = (char *)
1152                 odr_malloc(c->odr_out, strlen(auth_groupId)+1);
1153             strcpy(pass->groupId, auth_groupId);
1154             i++;
1155         }
1156         pass->userId = 0;
1157         if (auth_userId && *auth_userId)
1158         {
1159             pass->userId = (char *)
1160                 odr_malloc(c->odr_out, strlen(auth_userId)+1);
1161             strcpy(pass->userId, auth_userId);
1162             i++;
1163         }
1164         pass->password = 0;
1165         if (auth_password && *auth_password)
1166         {
1167             pass->password = (char *)
1168                 odr_malloc(c->odr_out, strlen(auth_password)+1);
1169             strcpy(pass->password, auth_password);
1170             i++;
1171         }
1172         if (i)
1173         {
1174             auth->which = Z_IdAuthentication_idPass;
1175             auth->u.idPass = pass;
1176             ireq->idAuthentication = auth;
1177         }
1178     }
1179     else if (auth_userId)
1180     {
1181         auth->which = Z_IdAuthentication_open;
1182         auth->u.open = (char *)
1183             odr_malloc(c->odr_out, strlen(auth_userId)+1);
1184         strcpy(auth->u.open, auth_userId);
1185         ireq->idAuthentication = auth;
1186     }
1187     if (c->proxy)
1188         yaz_oi_set_string_oidval(&ireq->otherInfo, c->odr_out,
1189                                  VAL_PROXY, 1, c->host_port);
1190     if (c->charset || c->lang)
1191     {
1192         Z_OtherInformation **oi;
1193         Z_OtherInformationUnit *oi_unit;
1194
1195         yaz_oi_APDU(apdu, &oi);
1196
1197         if ((oi_unit = yaz_oi_update(oi, c->odr_out, NULL, 0, 0)))
1198         {
1199             char **charsets_addresses = 0;
1200             char **langs_addresses = 0;
1201             int charsets_count = 0;
1202             int langs_count = 0;
1203
1204             if (c->charset)
1205                 nmem_strsplit_blank(c->odr_out->mem, c->charset,
1206                                     &charsets_addresses, &charsets_count);
1207             if (c->lang)
1208                 nmem_strsplit_blank(c->odr_out->mem, c->lang,
1209                                     &langs_addresses, &langs_count);
1210             ODR_MASK_SET(ireq->options, Z_Options_negotiationModel);
1211             oi_unit->which = Z_OtherInfo_externallyDefinedInfo;
1212             oi_unit->information.externallyDefinedInfo =
1213                 yaz_set_proposal_charneg(c->odr_out,
1214                                          (const char **) charsets_addresses,
1215                                          charsets_count,
1216                                          (const char **) langs_addresses,
1217                                          langs_count,
1218                                          1);
1219         }
1220     }
1221     assert (apdu);
1222     return send_APDU (c, apdu);
1223 }
1224
1225 #if HAVE_XML2
1226 static zoom_ret send_srw (ZOOM_connection c, Z_SRW_PDU *sr)
1227 {
1228     char ctype[50];
1229     Z_SOAP_Handler h[2] = {
1230         {"http://www.loc.gov/zing/srw/", 0, (Z_SOAP_fun) yaz_srw_codec},
1231         {0, 0, 0}
1232     };
1233     ODR o = odr_createmem(ODR_ENCODE);
1234     int ret;
1235     Z_SOAP *p = (Z_SOAP*) odr_malloc(o, sizeof(*p));
1236     Z_GDU *gdu;
1237     ZOOM_Event event;
1238
1239     gdu = z_get_HTTP_Request(c->odr_out);
1240     gdu->u.HTTP_Request->path = c->path;
1241
1242     if (c->host_port)
1243     {
1244         const char *cp0 = strstr(c->host_port, "://");
1245         const char *cp1 = 0;
1246         if (cp0)
1247             cp0 = cp0+3;
1248         else
1249             cp0 = c->host_port;
1250
1251         cp1 = strchr(cp0, '/');
1252         if (!cp1)
1253             cp1 = cp0+strlen(cp0);
1254
1255         if (cp0 && cp1)
1256         {
1257             char *h = (char*) odr_malloc(c->odr_out, cp1 - cp0 + 1);
1258             memcpy (h, cp0, cp1 - cp0);
1259             h[cp1-cp0] = '\0';
1260             z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1261                               "Host", h);
1262         }
1263     }
1264
1265     strcpy(ctype, "text/xml");
1266     if (c->charset && strlen(c->charset) < 20)
1267     {
1268         strcat(ctype, "; charset=");
1269         strcat(ctype, c->charset);
1270     }
1271     z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1272                       "Content-Type", ctype);
1273     z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1274                       "SOAPAction", "\"\"");
1275     p->which = Z_SOAP_generic;
1276     p->u.generic = (Z_SOAP_Generic *) odr_malloc(o, sizeof(*p->u.generic));
1277     p->u.generic->no = 0;
1278     p->u.generic->ns = 0;
1279     p->u.generic->p = sr;
1280     p->ns = "http://schemas.xmlsoap.org/soap/envelope/";
1281
1282     ret = z_soap_codec_enc(o, &p,
1283                            &gdu->u.HTTP_Request->content_buf,
1284                            &gdu->u.HTTP_Request->content_len, h,
1285                            c->charset);
1286
1287     if (!z_GDU(c->odr_out, &gdu, 0, 0))
1288         return zoom_complete;
1289     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1290
1291     odr_destroy(o);
1292
1293     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
1294     ZOOM_connection_put_event (c, event);
1295     odr_reset(c->odr_out);
1296     return do_write (c);
1297 }
1298 #endif
1299
1300 #if HAVE_XML2
1301 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1302 {
1303     int i;
1304     ZOOM_resultset resultset = 0;
1305     Z_SRW_PDU *sr = 0;
1306     const char *recordPacking = 0;
1307
1308     if (c->error)                  /* don't continue on error */
1309         return zoom_complete;
1310     assert (c->tasks);
1311     if (c->tasks->which == ZOOM_TASK_SEARCH)
1312     {
1313         resultset = c->tasks->u.search.resultset;
1314         resultset->setname = xstrdup ("default");
1315         ZOOM_options_set (resultset->options, "setname", resultset->setname);
1316     }
1317     else if(c->tasks->which == ZOOM_TASK_RETRIEVE)
1318     {
1319         resultset = c->tasks->u.retrieve.resultset;
1320
1321         resultset->start = c->tasks->u.retrieve.start;
1322         resultset->count = c->tasks->u.retrieve.count;
1323
1324         if (resultset->start >= resultset->size)
1325             return zoom_complete;
1326         if (resultset->start + resultset->count > resultset->size)
1327             resultset->count = resultset->size - resultset->start;
1328
1329         for (i = 0; i<resultset->count; i++)
1330         {
1331             ZOOM_record rec =
1332                 record_cache_lookup (resultset, i + resultset->start);
1333             if (!rec)
1334                 break;
1335         }
1336         if (i == resultset->count)
1337             return zoom_complete;
1338     }
1339     assert(resultset->query);
1340
1341     sr = yaz_srw_get(c->odr_out, Z_SRW_searchRetrieve_request);
1342
1343     if (resultset->query->z_query->which == Z_Query_type_104
1344         && resultset->query->z_query->u.type_104->which == Z_External_CQL)
1345     {
1346
1347         sr->u.request->query_type = Z_SRW_query_type_cql;
1348         sr->u.request->query.cql =resultset->query->z_query->u.type_104->u.cql;
1349     }
1350     else if (resultset->query->z_query->which == Z_Query_type_1 &&
1351              resultset->query->z_query->u.type_1)
1352     {
1353         sr->u.request->query_type = Z_SRW_query_type_pqf;
1354         sr->u.request->query.pqf = resultset->query->query_string;
1355     }
1356     else
1357     {
1358         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
1359         return zoom_complete;
1360     }
1361     sr->u.request->startRecord = odr_intdup (c->odr_out, resultset->start + 1);
1362     sr->u.request->maximumRecords = odr_intdup (
1363         c->odr_out, resultset->step>0 ? resultset->step : resultset->count);
1364     sr->u.request->recordSchema = resultset->schema;
1365
1366     recordPacking = ZOOM_resultset_option_get (resultset, "recordPacking");
1367
1368     if (recordPacking)
1369         sr->u.request->recordPacking = odr_strdup(c->odr_out, recordPacking);
1370
1371     return send_srw(c, sr);
1372 }
1373 #else
1374 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1375 {
1376     return zoom_complete;
1377 }
1378 #endif
1379
1380 static zoom_ret ZOOM_connection_send_search (ZOOM_connection c)
1381 {
1382     ZOOM_resultset r;
1383     int lslb, ssub, mspn;
1384     const char *syntax;
1385     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_searchRequest);
1386     Z_SearchRequest *search_req = apdu->u.searchRequest;
1387     const char *elementSetName;
1388     const char *smallSetElementSetName;
1389     const char *mediumSetElementSetName;
1390
1391     assert (c->tasks);
1392     assert (c->tasks->which == ZOOM_TASK_SEARCH);
1393
1394     r = c->tasks->u.search.resultset;
1395
1396     yaz_log(log_details, "%p ZOOM_connection_send_search set=%p", c, r);
1397
1398     elementSetName =
1399         ZOOM_options_get (r->options, "elementSetName");
1400     smallSetElementSetName  =
1401         ZOOM_options_get (r->options, "smallSetElementSetName");
1402     mediumSetElementSetName =
1403         ZOOM_options_get (r->options, "mediumSetElementSetName");
1404
1405     if (!smallSetElementSetName)
1406         smallSetElementSetName = elementSetName;
1407
1408     if (!mediumSetElementSetName)
1409         mediumSetElementSetName = elementSetName;
1410
1411     assert (r);
1412     assert (r->query);
1413
1414     /* prepare query for the search request */
1415     search_req->query = r->query->z_query;
1416     if (!search_req->query)
1417     {
1418         set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
1419         return zoom_complete;
1420     }
1421
1422     search_req->databaseNames =
1423         set_DatabaseNames (c, r->options, &search_req->num_databaseNames);
1424
1425     /* get syntax (no need to provide unless piggyback is in effect) */
1426     syntax = ZOOM_options_get (r->options, "preferredRecordSyntax");
1427
1428     lslb = ZOOM_options_get_int (r->options, "largeSetLowerBound", -1);
1429     ssub = ZOOM_options_get_int (r->options, "smallSetUpperBound", -1);
1430     mspn = ZOOM_options_get_int (r->options, "mediumSetPresentNumber", -1);
1431     if (lslb != -1 && ssub != -1 && mspn != -1)
1432     {
1433         /* So're a Z39.50 expert? Let's hope you don't do sort */
1434         *search_req->largeSetLowerBound = lslb;
1435         *search_req->smallSetUpperBound = ssub;
1436         *search_req->mediumSetPresentNumber = mspn;
1437     }
1438     else if (r->start == 0 && r->count > 0
1439              && r->piggyback && !r->r_sort_spec && !r->schema)
1440     {
1441         /* Regular piggyback - do it unless we're going to do sort */
1442         *search_req->largeSetLowerBound = 2000000000;
1443         *search_req->smallSetUpperBound = 1;
1444         *search_req->mediumSetPresentNumber = r->step>0 ? r->step : r->count;
1445     }
1446     else
1447     {
1448         /* non-piggyback. Need not provide elementsets or syntaxes .. */
1449         smallSetElementSetName = 0;
1450         mediumSetElementSetName = 0;
1451         syntax = 0;
1452     }
1453     if (smallSetElementSetName && *smallSetElementSetName)
1454     {
1455         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1456             odr_malloc (c->odr_out, sizeof(*esn));
1457
1458         esn->which = Z_ElementSetNames_generic;
1459         esn->u.generic = odr_strdup (c->odr_out, smallSetElementSetName);
1460         search_req->smallSetElementSetNames = esn;
1461     }
1462     if (mediumSetElementSetName && *mediumSetElementSetName)
1463     {
1464         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1465             odr_malloc (c->odr_out, sizeof(*esn));
1466
1467         esn->which = Z_ElementSetNames_generic;
1468         esn->u.generic = odr_strdup (c->odr_out, mediumSetElementSetName);
1469         search_req->mediumSetElementSetNames = esn;
1470     }
1471     if (syntax)
1472         search_req->preferredRecordSyntax =
1473             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
1474
1475     if (!r->setname)
1476     {
1477         if (c->support_named_resultsets)
1478         {
1479             char setname[14];
1480             int ord;
1481             /* find the lowest unused ordinal so that we re-use
1482                result sets on the server. */
1483             for (ord = 1; ; ord++)
1484             {
1485                 ZOOM_resultset rp;
1486                 sprintf (setname, "%d", ord);
1487                 for (rp = c->resultsets; rp; rp = rp->next)
1488                     if (rp->setname && !strcmp (rp->setname, setname))
1489                         break;
1490                 if (!rp)
1491                     break;
1492             }
1493             r->setname = xstrdup (setname);
1494             yaz_log(log_details, "%p ZOOM_connection_send_search: allocating "
1495                     "set %s", c, r->setname);
1496         }
1497         else
1498         {
1499             yaz_log(log_details, "%p ZOOM_connection_send_search: using "
1500                     "default set", c);
1501             r->setname = xstrdup ("default");
1502         }
1503         ZOOM_options_set (r->options, "setname", r->setname);
1504     }
1505     search_req->resultSetName = odr_strdup(c->odr_out, r->setname);
1506     return send_APDU (c, apdu);
1507 }
1508
1509 static void response_default_diag(ZOOM_connection c, Z_DefaultDiagFormat *r)
1510 {
1511     int oclass;
1512     char *addinfo = 0;
1513
1514     switch (r->which)
1515     {
1516     case Z_DefaultDiagFormat_v2Addinfo:
1517         addinfo = r->u.v2Addinfo;
1518         break;
1519     case Z_DefaultDiagFormat_v3Addinfo:
1520         addinfo = r->u.v3Addinfo;
1521         break;
1522     }
1523     xfree (c->addinfo);
1524     c->addinfo = 0;
1525     set_dset_error(c, *r->condition,
1526                    yaz_z3950oid_to_str(r->diagnosticSetId, &oclass),
1527                    addinfo, 0);
1528 }
1529
1530 static void response_diag(ZOOM_connection c, Z_DiagRec *p)
1531 {
1532     if (p->which != Z_DiagRec_defaultFormat)
1533         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1534     else
1535         response_default_diag(c, p->u.defaultFormat);
1536 }
1537
1538 ZOOM_API(ZOOM_record)
1539 ZOOM_record_clone (ZOOM_record srec)
1540 {
1541     char *buf;
1542     int size;
1543     ODR odr_enc;
1544     ZOOM_record nrec;
1545
1546     odr_enc = odr_createmem(ODR_ENCODE);
1547     if (!z_NamePlusRecord (odr_enc, &srec->npr, 0, 0))
1548         return 0;
1549     buf = odr_getbuf (odr_enc, &size, 0);
1550
1551     nrec = (ZOOM_record) xmalloc (sizeof(*nrec));
1552     nrec->odr = odr_createmem(ODR_DECODE);
1553     nrec->wrbuf_marc = 0;
1554     nrec->wrbuf_iconv = 0;
1555     nrec->wrbuf_opac = 0;
1556     odr_setbuf (nrec->odr, buf, size, 0);
1557     z_NamePlusRecord (nrec->odr, &nrec->npr, 0, 0);
1558
1559     odr_destroy (odr_enc);
1560     return nrec;
1561 }
1562
1563 ZOOM_API(ZOOM_record)
1564 ZOOM_resultset_record_immediate (ZOOM_resultset s,size_t pos)
1565 {
1566     return record_cache_lookup (s, pos);
1567 }
1568
1569 ZOOM_API(ZOOM_record)
1570 ZOOM_resultset_record (ZOOM_resultset r, size_t pos)
1571 {
1572     ZOOM_record rec = ZOOM_resultset_record_immediate(r, pos);
1573
1574     if (!rec)
1575     {
1576         ZOOM_resultset_retrieve (r, 1, pos, 1);
1577         rec = ZOOM_resultset_record_immediate (r, pos);
1578     }
1579     return rec;
1580 }
1581
1582 ZOOM_API(void)
1583 ZOOM_record_destroy (ZOOM_record rec)
1584 {
1585     if (!rec)
1586         return;
1587     if (rec->wrbuf_marc)
1588         wrbuf_free (rec->wrbuf_marc, 1);
1589     if (rec->wrbuf_iconv)
1590         wrbuf_free (rec->wrbuf_iconv, 1);
1591     if (rec->wrbuf_opac)
1592         wrbuf_free (rec->wrbuf_opac, 1);
1593     odr_destroy (rec->odr);
1594     xfree (rec);
1595 }
1596
1597 static const char *marc_iconv_return(ZOOM_record rec, int marc_type,
1598                                      int *len,
1599                                      const char *buf, int sz,
1600                                      const char *record_charset)
1601 {
1602     char to[40];
1603     char from[40];
1604     yaz_iconv_t cd = 0;
1605     yaz_marc_t mt = yaz_marc_create();
1606
1607     *from = '\0';
1608     strcpy(to, "UTF-8");
1609     if (record_charset && *record_charset)
1610     {
1611         /* Use "from,to" or just "from" */
1612         const char *cp = strchr(record_charset, ',');
1613         int clen = strlen(record_charset);
1614         if (cp && cp[1])
1615         {
1616             strncpy( to, cp+1, sizeof(to)-1);
1617             to[sizeof(to)-1] = '\0';
1618             clen = cp - record_charset;
1619         }
1620         if (clen > sizeof(from)-1)
1621             clen = sizeof(from)-1;
1622
1623         if (clen)
1624             strncpy(from, record_charset, clen);
1625         from[clen] = '\0';
1626     }
1627
1628     if (*from && *to)
1629     {
1630         cd = yaz_iconv_open(to, from);
1631         yaz_marc_iconv(mt, cd);
1632     }
1633
1634     yaz_marc_xml(mt, marc_type);
1635     if (!rec->wrbuf_marc)
1636         rec->wrbuf_marc = wrbuf_alloc();
1637     wrbuf_rewind (rec->wrbuf_marc);
1638     if (yaz_marc_decode_wrbuf (mt, buf, sz, rec->wrbuf_marc) > 0)
1639     {
1640         yaz_marc_destroy(mt);
1641         if (cd)
1642             yaz_iconv_close(cd);
1643         if (len)
1644             *len = wrbuf_len(rec->wrbuf_marc);
1645         return wrbuf_buf(rec->wrbuf_marc);
1646     }
1647     yaz_marc_destroy(mt);
1648     if (cd)
1649         yaz_iconv_close(cd);
1650     return 0;
1651 }
1652
1653 static const char *record_iconv_return(ZOOM_record rec, int *len,
1654                                        const char *buf, int sz,
1655                                        const char *record_charset)
1656 {
1657     char to[40];
1658     char from[40];
1659     yaz_iconv_t cd = 0;
1660
1661     *from = '\0';
1662     strcpy(to, "UTF-8");
1663     if (record_charset && *record_charset)
1664     {
1665         /* Use "from,to" or just "from" */
1666         const char *cp = strchr(record_charset, ',');
1667         int clen = strlen(record_charset);
1668         if (cp && cp[1])
1669         {
1670             strncpy( to, cp+1, sizeof(to)-1);
1671             to[sizeof(to)-1] = '\0';
1672             clen = cp - record_charset;
1673         }
1674         if (clen > sizeof(from)-1)
1675             clen = sizeof(from)-1;
1676
1677         if (clen)
1678             strncpy(from, record_charset, clen);
1679         from[clen] = '\0';
1680     }
1681
1682     if (*from && *to && (cd = yaz_iconv_open(to, from)))
1683     {
1684         char outbuf[12];
1685         size_t inbytesleft = sz;
1686         const char *inp = buf;
1687
1688         if (!rec->wrbuf_iconv)
1689             rec->wrbuf_iconv = wrbuf_alloc();
1690
1691         wrbuf_rewind(rec->wrbuf_iconv);
1692
1693         while (inbytesleft)
1694         {
1695             size_t outbytesleft = sizeof(outbuf);
1696             char *outp = outbuf;
1697             size_t r = yaz_iconv (cd, (char**) &inp,
1698                                   &inbytesleft,
1699                                   &outp, &outbytesleft);
1700             if (r == (size_t) (-1))
1701             {
1702                 int e = yaz_iconv_error(cd);
1703                 if (e != YAZ_ICONV_E2BIG)
1704                     break;
1705             }
1706             wrbuf_write(rec->wrbuf_iconv, outbuf, outp - outbuf);
1707         }
1708         wrbuf_puts(rec->wrbuf_iconv, "");
1709         buf = wrbuf_buf(rec->wrbuf_iconv);
1710         sz = wrbuf_len(rec->wrbuf_iconv);
1711         yaz_iconv_close(cd);
1712     }
1713     if (len)
1714         *len = sz;
1715     return buf;
1716 }
1717
1718 ZOOM_API(const char *)
1719 ZOOM_record_get (ZOOM_record rec, const char *type_spec, int *len)
1720 {
1721     char type[40];
1722     char charset[40];
1723     char xpath[512];
1724     const char *cp;
1725     int i;
1726     Z_NamePlusRecord *npr;
1727
1728     if (len)
1729         *len = 0; /* default return */
1730
1731     if (!rec)
1732         return 0;
1733     npr = rec->npr;
1734     if (!npr)
1735         return 0;
1736
1737     cp = type_spec;
1738     for (i = 0; cp[i] && i < sizeof(type)-1; i++)
1739     {
1740         if (cp[i] == ';' || cp[i] == ' ')
1741             break;
1742         type[i] = cp[i];
1743     }
1744     type[i] = '\0';
1745     charset[0] = '\0';
1746     while (type_spec[i] == ';')
1747     {
1748         i++;
1749         while (type_spec[i] == ' ')
1750             i++;
1751         if (!strncmp(type_spec+i, "charset=", 8))
1752         {
1753             int j = 0;
1754             i = i + 8; /* skip charset= */
1755             for (j = 0; type_spec[i]  && j < sizeof(charset)-1; i++, j++)
1756             {
1757                 if (type_spec[i] == ';' || type_spec[i] == ' ')
1758                     break;
1759                 charset[j] = cp[i];
1760             }
1761             charset[j] = '\0';
1762         }
1763         else if (!strncmp(type_spec+i, "xpath=", 6))
1764         {
1765             int j = 0;
1766             i = i + 6;
1767             for (j = 0; type_spec[i] && j < sizeof(xpath)-1; i++, j++)
1768                 xpath[j] = cp[i];
1769             xpath[j] = '\0';
1770         }
1771         while (type_spec[i] == ' ')
1772             i++;
1773     }
1774     if (!strcmp (type, "database"))
1775     {
1776         if (len)
1777             *len = (npr->databaseName ? strlen(npr->databaseName) : 0);
1778         return npr->databaseName;
1779     }
1780     else if (!strcmp (type, "syntax"))
1781     {
1782         const char *desc = 0;
1783         if (npr->which == Z_NamePlusRecord_databaseRecord)
1784         {
1785             Z_External *r = (Z_External *) npr->u.databaseRecord;
1786             oident *ent = oid_getentbyoid(r->direct_reference);
1787             if (ent)
1788                 desc = ent->desc;
1789         }
1790         if (!desc)
1791             desc = "none";
1792         if (len)
1793             *len = strlen(desc);
1794         return desc;
1795     }
1796     if (npr->which != Z_NamePlusRecord_databaseRecord)
1797         return 0;
1798
1799     /* from now on - we have a database record .. */
1800     if (!strcmp (type, "render"))
1801     {
1802         Z_External *r = (Z_External *) npr->u.databaseRecord;
1803         oident *ent = oid_getentbyoid(r->direct_reference);
1804
1805         /* render bibliographic record .. */
1806         if (r->which == Z_External_OPAC)
1807         {
1808             r = r->u.opac->bibliographicRecord;
1809             if (!r)
1810                 return 0;
1811             ent = oid_getentbyoid(r->direct_reference);
1812         }
1813         if (r->which == Z_External_sutrs)
1814             return record_iconv_return(rec, len,
1815                                        (char*) r->u.sutrs->buf,
1816                                        r->u.sutrs->len,
1817                                        charset);
1818         else if (r->which == Z_External_octet)
1819         {
1820             const char *ret_buf;
1821             switch (ent->value)
1822             {
1823             case VAL_SOIF:
1824             case VAL_HTML:
1825             case VAL_SUTRS:
1826                 break;
1827             case VAL_TEXT_XML:
1828             case VAL_APPLICATION_XML:
1829                 break;
1830             default:
1831                 ret_buf = marc_iconv_return(
1832                     rec, YAZ_MARC_LINE, len,
1833                     (const char *) r->u.octet_aligned->buf,
1834                     r->u.octet_aligned->len,
1835                     charset);
1836                 if (ret_buf)
1837                     return ret_buf;
1838             }
1839             return record_iconv_return(rec, len,
1840                                        (const char *) r->u.octet_aligned->buf,
1841                                        r->u.octet_aligned->len,
1842                                        charset);
1843         }
1844         else if (r->which == Z_External_grs1)
1845         {
1846             if (!rec->wrbuf_marc)
1847                 rec->wrbuf_marc = wrbuf_alloc();
1848             wrbuf_rewind (rec->wrbuf_marc);
1849             yaz_display_grs1(rec->wrbuf_marc, r->u.grs1, 0);
1850             return record_iconv_return(rec, len,
1851                                        wrbuf_buf(rec->wrbuf_marc),
1852                                        wrbuf_len(rec->wrbuf_marc),
1853                                        charset);
1854         }
1855         return 0;
1856     }
1857     else if (!strcmp (type, "xml") || !strcmp(type, "oai"))
1858     {
1859         Z_External *r = (Z_External *) npr->u.databaseRecord;
1860         oident *ent = oid_getentbyoid(r->direct_reference);
1861
1862         /* render bibliographic record .. */
1863         if (r->which == Z_External_OPAC)
1864         {
1865             r = r->u.opac->bibliographicRecord;
1866             if (!r)
1867                 return 0;
1868             ent = oid_getentbyoid(r->direct_reference);
1869         }
1870
1871         if (r->which == Z_External_sutrs)
1872             return record_iconv_return(rec, len,
1873                                        (const char *) r->u.sutrs->buf,
1874                                        r->u.sutrs->len,
1875                                        charset);
1876         else if (r->which == Z_External_octet)
1877         {
1878             const char *ret_buf;
1879             int marc_decode_type = YAZ_MARC_MARCXML;
1880
1881             if (!strcmp(type, "oai"))
1882                 marc_decode_type = YAZ_MARC_OAIMARC;
1883             switch (ent->value)
1884             {
1885             case VAL_SOIF:
1886             case VAL_HTML:
1887             case VAL_SUTRS:
1888                 break;
1889             case VAL_TEXT_XML:
1890             case VAL_APPLICATION_XML:
1891                 break;
1892             default:
1893                 ret_buf = marc_iconv_return(
1894                     rec, marc_decode_type, len,
1895                     (const char *) r->u.octet_aligned->buf,
1896                     r->u.octet_aligned->len,
1897                     charset);
1898                 if (ret_buf)
1899                     return ret_buf;
1900             }
1901             return record_iconv_return(rec, len,
1902                                        (const char *) r->u.octet_aligned->buf,
1903                                        r->u.octet_aligned->len,
1904                                        charset);
1905         }
1906         else if (r->which == Z_External_grs1)
1907         {
1908             if (len) *len = 5;
1909             return "GRS-1";
1910         }
1911         return 0;
1912     }
1913     else if (!strcmp (type, "raw"))
1914     {
1915         Z_External *r = (Z_External *) npr->u.databaseRecord;
1916
1917         if (r->which == Z_External_sutrs)
1918         {
1919             if (len) *len = r->u.sutrs->len;
1920             return (const char *) r->u.sutrs->buf;
1921         }
1922         else if (r->which == Z_External_octet)
1923         {
1924             if (len) *len = r->u.octet_aligned->len;
1925             return (const char *) r->u.octet_aligned->buf;
1926         }
1927         else /* grs-1, explain, OPAC, ... */
1928         {
1929             if (len) *len = -1;
1930             return (const char *) npr->u.databaseRecord;
1931         }
1932         return 0;
1933     }
1934     else if (!strcmp (type, "ext"))
1935     {
1936         if (len) *len = -1;
1937         return (const char *) npr->u.databaseRecord;
1938     }
1939     else if (!strcmp (type, "opac"))
1940
1941     {
1942         Z_External *r = (Z_External *) npr->u.databaseRecord;
1943         if (r->which == Z_External_OPAC)
1944         {
1945             if (!rec->wrbuf_opac)
1946                 rec->wrbuf_opac = wrbuf_alloc();
1947             wrbuf_rewind (rec->wrbuf_opac);
1948             yaz_display_OPAC(rec->wrbuf_opac, r->u.opac, 0);
1949             return record_iconv_return(rec, len,
1950                                        wrbuf_buf(rec->wrbuf_opac),
1951                                        wrbuf_len(rec->wrbuf_opac),
1952                                        charset);
1953         }
1954     }
1955     return 0;
1956 }
1957
1958 static int strcmp_null(const char *v1, const char *v2)
1959 {
1960     if (!v1 && !v2)
1961         return 0;
1962     if (!v1 || !v2)
1963         return -1;
1964     return strcmp(v1, v2);
1965 }
1966
1967 static void record_cache_add (ZOOM_resultset r, Z_NamePlusRecord *npr,
1968                               int pos)
1969 {
1970     ZOOM_record_cache rc;
1971     const char *elementSetName =
1972         ZOOM_resultset_option_get (r, "elementSetName");
1973     const char *syntax =
1974         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
1975
1976     ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
1977     ZOOM_connection_put_event(r->connection, event);
1978
1979     for (rc = r->record_cache; rc; rc = rc->next)
1980     {
1981         if (pos == rc->pos)
1982         {
1983             if (strcmp_null(r->schema, rc->schema))
1984                 continue;
1985             if (strcmp_null(elementSetName,rc->elementSetName))
1986                 continue;
1987             if (strcmp_null(syntax, rc->syntax))
1988                 continue;
1989             /* not destroying rc->npr (it's handled by nmem )*/
1990             rc->rec.npr = npr;
1991             /* keeping wrbuf_marc too */
1992             return;
1993         }
1994     }
1995     rc = (ZOOM_record_cache) odr_malloc (r->odr, sizeof(*rc));
1996     rc->rec.npr = npr;
1997     rc->rec.odr = 0;
1998     rc->rec.wrbuf_marc = 0;
1999     rc->rec.wrbuf_iconv = 0;
2000     rc->rec.wrbuf_opac = 0;
2001     if (elementSetName)
2002         rc->elementSetName = odr_strdup (r->odr, elementSetName);
2003     else
2004         rc->elementSetName = 0;
2005
2006     if (syntax)
2007         rc->syntax = odr_strdup (r->odr, syntax);
2008     else
2009         rc->syntax = 0;
2010
2011     if (r->schema)
2012         rc->schema = odr_strdup (r->odr, r->schema);
2013     else
2014         rc->schema = 0;
2015
2016     rc->pos = pos;
2017     rc->next = r->record_cache;
2018     r->record_cache = rc;
2019 }
2020
2021 static ZOOM_record record_cache_lookup (ZOOM_resultset r, int pos)
2022 {
2023     ZOOM_record_cache rc;
2024     const char *elementSetName =
2025         ZOOM_resultset_option_get (r, "elementSetName");
2026     const char *syntax =
2027         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
2028
2029     for (rc = r->record_cache; rc; rc = rc->next)
2030     {
2031         if (pos == rc->pos)
2032         {
2033             if (strcmp_null(r->schema, rc->schema))
2034                 continue;
2035             if (strcmp_null(elementSetName,rc->elementSetName))
2036                 continue;
2037             if (strcmp_null(syntax, rc->syntax))
2038                 continue;
2039             return &rc->rec;
2040         }
2041     }
2042     return 0;
2043 }
2044
2045 static void handle_records (ZOOM_connection c, Z_Records *sr,
2046                             int present_phase)
2047 {
2048     ZOOM_resultset resultset;
2049
2050     if (!c->tasks)
2051         return ;
2052     switch (c->tasks->which)
2053     {
2054     case ZOOM_TASK_SEARCH:
2055         resultset = c->tasks->u.search.resultset;
2056         break;
2057     case ZOOM_TASK_RETRIEVE:
2058         resultset = c->tasks->u.retrieve.resultset;
2059         break;
2060     default:
2061         return;
2062     }
2063     if (sr && sr->which == Z_Records_NSD)
2064         response_default_diag(c, sr->u.nonSurrogateDiagnostic);
2065     else if (sr && sr->which == Z_Records_multipleNSD)
2066     {
2067         if (sr->u.multipleNonSurDiagnostics->num_diagRecs >= 1)
2068             response_diag(c, sr->u.multipleNonSurDiagnostics->diagRecs[0]);
2069         else
2070             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2071     }
2072     else
2073     {
2074         if (resultset->count + resultset->start > resultset->size)
2075             resultset->count = resultset->size - resultset->start;
2076         if (resultset->count < 0)
2077             resultset->count = 0;
2078         if (sr && sr->which == Z_Records_DBOSD)
2079         {
2080             int i;
2081             NMEM nmem = odr_extract_mem (c->odr_in);
2082             Z_NamePlusRecordList *p =
2083                 sr->u.databaseOrSurDiagnostics;
2084             for (i = 0; i<p->num_records; i++)
2085             {
2086                 record_cache_add (resultset, p->records[i],
2087                                   i+ resultset->start);
2088             }
2089             /* transfer our response to search_nmem .. we need it later */
2090             nmem_transfer (resultset->odr->mem, nmem);
2091             nmem_destroy (nmem);
2092             if (present_phase && p->num_records == 0)
2093             {
2094                 /* present response and we didn't get any records! */
2095                 Z_NamePlusRecord *myrec =
2096                     zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2097                 record_cache_add(resultset, myrec, resultset->start);
2098             }
2099         }
2100         else if (present_phase)
2101         {
2102             /* present response and we didn't get any records! */
2103             Z_NamePlusRecord *myrec =
2104                 zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2105             record_cache_add(resultset, myrec, resultset->start);
2106         }
2107     }
2108 }
2109
2110 static void handle_present_response (ZOOM_connection c, Z_PresentResponse *pr)
2111 {
2112     handle_records (c, pr->records, 1);
2113 }
2114
2115 static void handle_queryExpressionTerm(ZOOM_options opt, const char *name,
2116                                        Z_Term *term)
2117 {
2118     switch (term->which)
2119     {
2120     case Z_Term_general:
2121         ZOOM_options_setl(opt, name,
2122                           (const char *)(term->u.general->buf),
2123                           term->u.general->len);
2124         break;
2125     case Z_Term_characterString:
2126         ZOOM_options_set(opt, name, term->u.characterString);
2127         break;
2128     case Z_Term_numeric:
2129         ZOOM_options_set_int(opt, name, *term->u.numeric);
2130         break;
2131     }
2132 }
2133
2134 static void handle_queryExpression(ZOOM_options opt, const char *name,
2135                                    Z_QueryExpression *exp)
2136 {
2137     char opt_name[80];
2138
2139     switch (exp->which)
2140     {
2141     case Z_QueryExpression_term:
2142         if (exp->u.term && exp->u.term->queryTerm)
2143         {
2144             sprintf(opt_name, "%s.term", name);
2145             handle_queryExpressionTerm(opt, opt_name, exp->u.term->queryTerm);
2146         }
2147         break;
2148     case Z_QueryExpression_query:
2149         break;
2150     }
2151 }
2152
2153 static void handle_searchResult(ZOOM_connection c, ZOOM_resultset resultset,
2154                                 Z_OtherInformation *o)
2155 {
2156     int i;
2157     for (i = 0; o && i < o->num_elements; i++)
2158     {
2159         if (o->list[i]->which == Z_OtherInfo_externallyDefinedInfo)
2160         {
2161             Z_External *ext = o->list[i]->information.externallyDefinedInfo;
2162
2163             if (ext->which == Z_External_searchResult1)
2164             {
2165                 int j;
2166                 Z_SearchInfoReport *sr = ext->u.searchResult1;
2167
2168                 if (sr->num)
2169                     ZOOM_options_set_int(
2170                         resultset->options, "searchresult.size", sr->num);
2171
2172                 for (j = 0; j < sr->num; j++)
2173                 {
2174                     Z_SearchInfoReport_s *ent =
2175                         ext->u.searchResult1->elements[j];
2176                     char pref[80];
2177
2178                     sprintf(pref, "searchresult.%d", j);
2179
2180                     if (ent->subqueryId)
2181                     {
2182                         char opt_name[80];
2183                         sprintf(opt_name, "%s.id", pref);
2184                         ZOOM_options_set(resultset->options, opt_name,
2185                                          ent->subqueryId);
2186                     }
2187                     if (ent->subqueryExpression)
2188                     {
2189                         char opt_name[80];
2190                         sprintf(opt_name, "%s.subquery", pref);
2191                         handle_queryExpression(resultset->options, opt_name,
2192                                                ent->subqueryExpression);
2193                     }
2194                     if (ent->subqueryInterpretation)
2195                     {
2196                         char opt_name[80];
2197                         sprintf(opt_name, "%s.interpretation", pref);
2198                         handle_queryExpression(resultset->options, opt_name,
2199                                                ent->subqueryInterpretation);
2200                     }
2201                     if (ent->subqueryRecommendation)
2202                     {
2203                         char opt_name[80];
2204                         sprintf(opt_name, "%s.recommendation", pref);
2205                         handle_queryExpression(resultset->options, opt_name,
2206                                                ent->subqueryRecommendation);
2207                     }
2208                     if (ent->subqueryCount)
2209                     {
2210                         char opt_name[80];
2211                         sprintf(opt_name, "%s.count", pref);
2212                         ZOOM_options_set_int(resultset->options, opt_name,
2213                                              *ent->subqueryCount);
2214                     }
2215                 }
2216             }
2217         }
2218     }
2219 }
2220
2221 static void handle_search_response (ZOOM_connection c, Z_SearchResponse *sr)
2222 {
2223     ZOOM_resultset resultset;
2224     ZOOM_Event event;
2225
2226     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
2227         return ;
2228
2229     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
2230     ZOOM_connection_put_event(c, event);
2231
2232     resultset = c->tasks->u.search.resultset;
2233
2234     handle_searchResult(c, resultset, sr->additionalSearchInfo);
2235
2236     resultset->size = *sr->resultCount;
2237     handle_records (c, sr->records, 0);
2238 }
2239
2240 static void sort_response (ZOOM_connection c, Z_SortResponse *res)
2241 {
2242     if (res->diagnostics && res->num_diagnostics > 0)
2243         response_diag (c, res->diagnostics[0]);
2244 }
2245
2246 static int scan_response (ZOOM_connection c, Z_ScanResponse *res)
2247 {
2248     NMEM nmem = odr_extract_mem (c->odr_in);
2249     ZOOM_scanset scan;
2250
2251     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
2252         return 0;
2253     scan = c->tasks->u.scan.scan;
2254
2255     if (res->entries && res->entries->nonsurrogateDiagnostics)
2256         response_diag(c, res->entries->nonsurrogateDiagnostics[0]);
2257     scan->scan_response = res;
2258     nmem_transfer (scan->odr->mem, nmem);
2259     if (res->stepSize)
2260         ZOOM_options_set_int (scan->options, "stepSize", *res->stepSize);
2261     if (res->positionOfTerm)
2262         ZOOM_options_set_int (scan->options, "position", *res->positionOfTerm);
2263     if (res->scanStatus)
2264         ZOOM_options_set_int (scan->options, "scanStatus", *res->scanStatus);
2265     if (res->numberOfEntriesReturned)
2266         ZOOM_options_set_int (scan->options, "number",
2267                               *res->numberOfEntriesReturned);
2268     nmem_destroy (nmem);
2269     return 1;
2270 }
2271
2272 static zoom_ret send_sort (ZOOM_connection c,
2273                            ZOOM_resultset resultset)
2274 {
2275     if (c->error)
2276         resultset->r_sort_spec = 0;
2277     if (resultset->r_sort_spec)
2278     {
2279         Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_sortRequest);
2280         Z_SortRequest *req = apdu->u.sortRequest;
2281
2282         req->num_inputResultSetNames = 1;
2283         req->inputResultSetNames = (Z_InternationalString **)
2284             odr_malloc (c->odr_out, sizeof(*req->inputResultSetNames));
2285         req->inputResultSetNames[0] =
2286             odr_strdup (c->odr_out, resultset->setname);
2287         req->sortedResultSetName = odr_strdup (c->odr_out, resultset->setname);
2288         req->sortSequence = resultset->r_sort_spec;
2289         resultset->r_sort_spec = 0;
2290         return send_APDU (c, apdu);
2291     }
2292     return zoom_complete;
2293 }
2294
2295 static zoom_ret send_present(ZOOM_connection c)
2296 {
2297     Z_APDU *apdu = 0;
2298     Z_PresentRequest *req = 0;
2299     int i = 0;
2300     const char *syntax = 0;
2301     const char *elementSetName = 0;
2302     ZOOM_resultset  resultset;
2303
2304     if (!c->tasks)
2305     {
2306         yaz_log(log_details, "%p send_present no tasks", c);
2307         return zoom_complete;
2308     }
2309     switch (c->tasks->which)
2310     {
2311     case ZOOM_TASK_SEARCH:
2312         resultset = c->tasks->u.search.resultset;
2313         break;
2314     case ZOOM_TASK_RETRIEVE:
2315         resultset = c->tasks->u.retrieve.resultset;
2316         resultset->start = c->tasks->u.retrieve.start;
2317         resultset->count = c->tasks->u.retrieve.count;
2318
2319         if (resultset->start >= resultset->size)
2320         {
2321             yaz_log(log_details, "%p send_present start=%d >= size=%d",
2322                     c, resultset->start, resultset->size);
2323             return zoom_complete;
2324         }
2325         if (resultset->start + resultset->count > resultset->size)
2326             resultset->count = resultset->size - resultset->start;
2327         break;
2328     default:
2329         return zoom_complete;
2330     }
2331     yaz_log(log_details, "%p send_present start=%d count=%d",
2332             c, resultset->start, resultset->count);
2333
2334     syntax = ZOOM_resultset_option_get (resultset, "preferredRecordSyntax");
2335     elementSetName = ZOOM_resultset_option_get (resultset, "elementSetName");
2336
2337     if (c->error)                  /* don't continue on error */
2338         return zoom_complete;
2339     if (resultset->start < 0)
2340         return zoom_complete;
2341     for (i = 0; i<resultset->count; i++)
2342     {
2343         ZOOM_record rec =
2344             record_cache_lookup (resultset, i + resultset->start);
2345         if (!rec)
2346             break;
2347     }
2348     if (i == resultset->count)
2349     {
2350         yaz_log(log_details, "%p send_present skip=%d no more to fetch", c, i);
2351         return zoom_complete;
2352     }
2353
2354     apdu = zget_APDU(c->odr_out, Z_APDU_presentRequest);
2355     req = apdu->u.presentRequest;
2356
2357     resultset->start += i;
2358     resultset->count -= i;
2359
2360     if (i)
2361         yaz_log(log_details, "%p send_present skip=%d", c, i);
2362
2363     *req->resultSetStartPoint = resultset->start + 1;
2364     *req->numberOfRecordsRequested = resultset->step>0 ?
2365         resultset->step : resultset->count;
2366     assert (*req->numberOfRecordsRequested > 0);
2367
2368
2369     if (syntax && *syntax)
2370         req->preferredRecordSyntax =
2371             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
2372
2373     if (resultset->schema && *resultset->schema)
2374     {
2375         Z_RecordComposition *compo = (Z_RecordComposition *)
2376             odr_malloc (c->odr_out, sizeof(*compo));
2377
2378         req->recordComposition = compo;
2379         compo->which = Z_RecordComp_complex;
2380         compo->u.complex = (Z_CompSpec *)
2381             odr_malloc(c->odr_out, sizeof(*compo->u.complex));
2382         compo->u.complex->selectAlternativeSyntax = (bool_t *)
2383             odr_malloc(c->odr_out, sizeof(bool_t));
2384         *compo->u.complex->selectAlternativeSyntax = 0;
2385
2386         compo->u.complex->generic = (Z_Specification *)
2387             odr_malloc(c->odr_out, sizeof(*compo->u.complex->generic));
2388
2389         compo->u.complex->generic->which = Z_Schema_oid;
2390         compo->u.complex->generic->schema.oid = (Odr_oid *)
2391             yaz_str_to_z3950oid (c->odr_out, CLASS_SCHEMA, resultset->schema);
2392
2393         if (!compo->u.complex->generic->schema.oid)
2394         {
2395             /* OID wasn't a schema! Try record syntax instead. */
2396
2397             compo->u.complex->generic->schema.oid = (Odr_oid *)
2398                 yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, resultset->schema);
2399         }
2400         if (elementSetName && *elementSetName)
2401         {
2402             compo->u.complex->generic->elementSpec = (Z_ElementSpec *)
2403                 odr_malloc(c->odr_out, sizeof(Z_ElementSpec));
2404             compo->u.complex->generic->elementSpec->which =
2405                 Z_ElementSpec_elementSetName;
2406             compo->u.complex->generic->elementSpec->u.elementSetName =
2407                 odr_strdup (c->odr_out, elementSetName);
2408         }
2409         else
2410             compo->u.complex->generic->elementSpec = 0;
2411         compo->u.complex->num_dbSpecific = 0;
2412         compo->u.complex->dbSpecific = 0;
2413         compo->u.complex->num_recordSyntax = 0;
2414         compo->u.complex->recordSyntax = 0;
2415     }
2416     else if (elementSetName && *elementSetName)
2417     {
2418         Z_ElementSetNames *esn = (Z_ElementSetNames *)
2419             odr_malloc (c->odr_out, sizeof(*esn));
2420         Z_RecordComposition *compo = (Z_RecordComposition *)
2421             odr_malloc (c->odr_out, sizeof(*compo));
2422
2423         esn->which = Z_ElementSetNames_generic;
2424         esn->u.generic = odr_strdup (c->odr_out, elementSetName);
2425         compo->which = Z_RecordComp_simple;
2426         compo->u.simple = esn;
2427         req->recordComposition = compo;
2428     }
2429     req->resultSetId = odr_strdup(c->odr_out, resultset->setname);
2430     return send_APDU (c, apdu);
2431 }
2432
2433 ZOOM_API(ZOOM_scanset)
2434 ZOOM_connection_scan (ZOOM_connection c, const char *start)
2435 {
2436     ZOOM_scanset s;
2437     ZOOM_query q = ZOOM_query_create();
2438
2439     ZOOM_query_prefix (q, start);
2440
2441     s = ZOOM_connection_scan1(c, q);
2442     ZOOM_query_destroy (q);
2443     return s;
2444
2445 }
2446
2447 ZOOM_API(ZOOM_scanset)
2448 ZOOM_connection_scan1 (ZOOM_connection c, ZOOM_query q)
2449 {
2450     ZOOM_scanset scan = (ZOOM_scanset) xmalloc (sizeof(*scan));
2451     char *start;
2452     char *freeme = 0;
2453
2454     scan->connection = c;
2455     scan->odr = odr_createmem (ODR_DECODE);
2456     scan->options = ZOOM_options_create_with_parent (c->options);
2457     scan->refcount = 1;
2458     scan->scan_response = 0;
2459
2460     /*
2461      * We need to check the query-type, so we can recognise CQL and
2462      * compile it into a form that we can use here.  The ZOOM_query
2463      * structure has no explicit `type' member, but inspection of the
2464      * ZOOM_query_prefix() and ZOOM_query_cql() functions shows how
2465      * the structure is set up in each case.
2466      */
2467
2468     if (q->z_query->which == Z_Query_type_1) {
2469         yaz_log(log_api, "%p ZOOM_connection_scan1 q=%p PQF '%s'",
2470                 c, q, q->query_string);
2471         start = q->query_string;
2472     } else if (q->z_query->which == Z_Query_type_104) {
2473         yaz_log(log_api, "%p ZOOM_connection_scan1 q=%p CQL '%s'",
2474                 c, q, q->query_string);
2475         start = freeme = cql2pqf(c, q->query_string);
2476         if (start == 0)
2477             return 0;
2478     } else {
2479         yaz_log(YLOG_FATAL, "%p ZOOM_connection_scan1 q=%p unknown type '%s'",
2480                 c, q, q->query_string);
2481         abort();
2482     }
2483
2484     scan->termListAndStartPoint =
2485         p_query_scan(scan->odr, PROTO_Z3950, &scan->attributeSet, start);
2486     xfree (freeme);
2487     if (scan->termListAndStartPoint != 0)
2488     {
2489         ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_SCAN);
2490         task->u.scan.scan = scan;
2491
2492         (scan->refcount)++;
2493         if (!c->async)
2494         {
2495             while (ZOOM_event (1, &c))
2496                 ;
2497         }
2498     }
2499     return scan;
2500 }
2501
2502 ZOOM_API(void)
2503 ZOOM_scanset_destroy (ZOOM_scanset scan)
2504 {
2505     if (!scan)
2506         return;
2507     (scan->refcount)--;
2508     if (scan->refcount == 0)
2509     {
2510         odr_destroy (scan->odr);
2511
2512         ZOOM_options_destroy (scan->options);
2513         xfree (scan);
2514     }
2515 }
2516
2517 static zoom_ret send_package (ZOOM_connection c)
2518 {
2519     ZOOM_Event event;
2520
2521     yaz_log(log_details, "%p send_package", c);
2522     if (!c->tasks)
2523         return zoom_complete;
2524     assert (c->tasks->which == ZOOM_TASK_PACKAGE);
2525
2526     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
2527     ZOOM_connection_put_event (c, event);
2528
2529     return do_write_ex (c, c->tasks->u.package->buf_out,
2530                         c->tasks->u.package->len_out);
2531 }
2532
2533 static zoom_ret send_scan (ZOOM_connection c)
2534 {
2535     ZOOM_scanset scan;
2536     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_scanRequest);
2537     Z_ScanRequest *req = apdu->u.scanRequest;
2538
2539     yaz_log(log_details, "%p send_scan", c);
2540     if (!c->tasks)
2541         return zoom_complete;
2542     assert (c->tasks->which == ZOOM_TASK_SCAN);
2543     scan = c->tasks->u.scan.scan;
2544
2545     req->termListAndStartPoint = scan->termListAndStartPoint;
2546     req->attributeSet = scan->attributeSet;
2547
2548     *req->numberOfTermsRequested =
2549         ZOOM_options_get_int(scan->options, "number", 10);
2550
2551     req->preferredPositionInResponse =
2552         odr_intdup (c->odr_out,
2553                     ZOOM_options_get_int(scan->options, "position", 1));
2554
2555     req->stepSize =
2556         odr_intdup (c->odr_out,
2557                     ZOOM_options_get_int(scan->options, "stepSize", 0));
2558
2559     req->databaseNames = set_DatabaseNames (c, scan->options,
2560                                             &req->num_databaseNames);
2561
2562     return send_APDU (c, apdu);
2563 }
2564
2565 ZOOM_API(size_t)
2566 ZOOM_scanset_size (ZOOM_scanset scan)
2567 {
2568     if (!scan || !scan->scan_response || !scan->scan_response->entries)
2569         return 0;
2570     return scan->scan_response->entries->num_entries;
2571 }
2572
2573 ZOOM_API(const char *)
2574 ZOOM_scanset_term (ZOOM_scanset scan, size_t pos,
2575                    int *occ, int *len)
2576 {
2577     const char *term = 0;
2578     size_t noent = ZOOM_scanset_size (scan);
2579     Z_ScanResponse *res = scan->scan_response;
2580
2581     *len = 0;
2582     *occ = 0;
2583     if (pos >= noent)
2584         return 0;
2585     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2586     {
2587         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2588
2589         if (t->term->which == Z_Term_general)
2590         {
2591             term = (const char *) t->term->u.general->buf;
2592             *len = t->term->u.general->len;
2593         }
2594         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2595     }
2596     return term;
2597 }
2598
2599 ZOOM_API(const char *)
2600 ZOOM_scanset_display_term (ZOOM_scanset scan, size_t pos,
2601                            int *occ, int *len)
2602 {
2603     const char *term = 0;
2604     size_t noent = ZOOM_scanset_size (scan);
2605     Z_ScanResponse *res = scan->scan_response;
2606
2607     *len = 0;
2608     *occ = 0;
2609     if (pos >= noent)
2610         return 0;
2611     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2612     {
2613         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2614
2615         if (t->displayTerm)
2616         {
2617             term = t->displayTerm;
2618             *len = strlen(term);
2619         }
2620         else if (t->term->which == Z_Term_general)
2621         {
2622             term = (const char *) t->term->u.general->buf;
2623             *len = t->term->u.general->len;
2624         }
2625         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2626     }
2627     return term;
2628 }
2629
2630 ZOOM_API(const char *)
2631 ZOOM_scanset_option_get (ZOOM_scanset scan, const char *key)
2632 {
2633     return ZOOM_options_get (scan->options, key);
2634 }
2635
2636 ZOOM_API(void)
2637 ZOOM_scanset_option_set (ZOOM_scanset scan, const char *key,
2638                               const char *val)
2639 {
2640     ZOOM_options_set (scan->options, key, val);
2641 }
2642
2643 static Z_APDU *create_es_package (ZOOM_package p, int type)
2644 {
2645     const char *str;
2646     Z_APDU *apdu = zget_APDU(p->odr_out, Z_APDU_extendedServicesRequest);
2647     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2648
2649     *req->function = Z_ExtendedServicesRequest_create;
2650
2651     str = ZOOM_options_get(p->options, "package-name");
2652     if (str && *str)
2653         req->packageName = nmem_strdup (p->odr_out->mem, str);
2654
2655     str = ZOOM_options_get(p->options, "user-id");
2656     if (str)
2657         req->userId = nmem_strdup (p->odr_out->mem, str);
2658
2659     req->packageType = yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2660                                               type);
2661
2662     str = ZOOM_options_get(p->options, "function");
2663     if (str)
2664     {
2665         if (!strcmp (str, "create"))
2666             *req->function = 1;
2667         if (!strcmp (str, "delete"))
2668             *req->function = 2;
2669         if (!strcmp (str, "modify"))
2670             *req->function = 3;
2671     }
2672     return apdu;
2673 }
2674
2675 static const char *ill_array_lookup (void *clientData, const char *idx)
2676 {
2677     ZOOM_package p = (ZOOM_package) clientData;
2678     return ZOOM_options_get (p->options, idx+4);
2679 }
2680
2681 static Z_External *encode_ill_request (ZOOM_package p)
2682 {
2683     ODR out = p->odr_out;
2684     ILL_Request *req;
2685     Z_External *r = 0;
2686     struct ill_get_ctl ctl;
2687
2688     ctl.odr = p->odr_out;
2689     ctl.clientData = p;
2690     ctl.f = ill_array_lookup;
2691
2692     req = ill_get_ILLRequest(&ctl, "ill", 0);
2693
2694     if (!ill_Request (out, &req, 0, 0))
2695     {
2696         int ill_request_size;
2697         char *ill_request_buf = odr_getbuf (out, &ill_request_size, 0);
2698         if (ill_request_buf)
2699             odr_setbuf (out, ill_request_buf, ill_request_size, 1);
2700         return 0;
2701     }
2702     else
2703     {
2704         oident oid;
2705         int illRequest_size = 0;
2706         char *illRequest_buf = odr_getbuf (out, &illRequest_size, 0);
2707
2708         oid.proto = PROTO_GENERAL;
2709         oid.oclass = CLASS_GENERAL;
2710         oid.value = VAL_ISO_ILL_1;
2711
2712         r = (Z_External *) odr_malloc (out, sizeof(*r));
2713         r->direct_reference = odr_oiddup(out,oid_getoidbyent(&oid));
2714         r->indirect_reference = 0;
2715         r->descriptor = 0;
2716         r->which = Z_External_single;
2717
2718         r->u.single_ASN1_type =
2719             odr_create_Odr_oct(out,
2720                                (unsigned char *)illRequest_buf,
2721                                illRequest_size);
2722     }
2723     return r;
2724 }
2725
2726 static Z_ItemOrder *encode_item_order(ZOOM_package p)
2727 {
2728     Z_ItemOrder *req = (Z_ItemOrder *) odr_malloc (p->odr_out, sizeof(*req));
2729     const char *str;
2730
2731     req->which = Z_IOItemOrder_esRequest;
2732     req->u.esRequest = (Z_IORequest *)
2733         odr_malloc(p->odr_out,sizeof(Z_IORequest));
2734
2735     /* to keep part ... */
2736     req->u.esRequest->toKeep = (Z_IOOriginPartToKeep *)
2737         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartToKeep));
2738     req->u.esRequest->toKeep->supplDescription = 0;
2739     req->u.esRequest->toKeep->contact = (Z_IOContact *)
2740         odr_malloc (p->odr_out, sizeof(*req->u.esRequest->toKeep->contact));
2741
2742     str = ZOOM_options_get(p->options, "contact-name");
2743     req->u.esRequest->toKeep->contact->name = str ?
2744         nmem_strdup (p->odr_out->mem, str) : 0;
2745
2746     str = ZOOM_options_get(p->options, "contact-phone");
2747     req->u.esRequest->toKeep->contact->phone = str ?
2748         nmem_strdup (p->odr_out->mem, str) : 0;
2749
2750     str = ZOOM_options_get(p->options, "contact-email");
2751     req->u.esRequest->toKeep->contact->email = str ?
2752         nmem_strdup (p->odr_out->mem, str) : 0;
2753
2754     req->u.esRequest->toKeep->addlBilling = 0;
2755
2756     /* not to keep part ... */
2757     req->u.esRequest->notToKeep = (Z_IOOriginPartNotToKeep *)
2758         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartNotToKeep));
2759
2760     str = ZOOM_options_get(p->options, "itemorder-setname");
2761     if (!str)
2762         str = "default";
2763
2764     if (!*str)
2765         req->u.esRequest->notToKeep->resultSetItem = 0;
2766     else
2767     {
2768         req->u.esRequest->notToKeep->resultSetItem = (Z_IOResultSetItem *)
2769            odr_malloc(p->odr_out, sizeof(Z_IOResultSetItem));
2770
2771         req->u.esRequest->notToKeep->resultSetItem->resultSetId =
2772            nmem_strdup (p->odr_out->mem, str);
2773         req->u.esRequest->notToKeep->resultSetItem->item =
2774             (int *) odr_malloc(p->odr_out, sizeof(int));
2775
2776         str = ZOOM_options_get(p->options, "itemorder-item");
2777         *req->u.esRequest->notToKeep->resultSetItem->item =
2778             (str ? atoi(str) : 1);
2779     }
2780     req->u.esRequest->notToKeep->itemRequest = encode_ill_request(p);
2781
2782     return req;
2783 }
2784
2785 Z_APDU *create_admin_package(ZOOM_package p, int type,
2786                              Z_ESAdminOriginPartToKeep **toKeepP,
2787                              Z_ESAdminOriginPartNotToKeep **notToKeepP)
2788 {
2789     Z_APDU *apdu = create_es_package (p, VAL_ADMINSERVICE);
2790     if (apdu)
2791     {
2792         Z_ESAdminOriginPartToKeep  *toKeep;
2793         Z_ESAdminOriginPartNotToKeep  *notToKeep;
2794         Z_External *r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
2795         const char *first_db = "Default";
2796         int num_db;
2797         char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2798         if (num_db > 0)
2799             first_db = db[0];
2800
2801         r->direct_reference =
2802             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2803                                    VAL_ADMINSERVICE);
2804         r->descriptor = 0;
2805         r->indirect_reference = 0;
2806         r->which = Z_External_ESAdmin;
2807
2808         r->u.adminService = (Z_Admin *)
2809             odr_malloc(p->odr_out, sizeof(*r->u.adminService));
2810         r->u.adminService->which = Z_Admin_esRequest;
2811         r->u.adminService->u.esRequest = (Z_AdminEsRequest *)
2812             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest));
2813
2814         toKeep = r->u.adminService->u.esRequest->toKeep =
2815             (Z_ESAdminOriginPartToKeep *)
2816             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest->toKeep));
2817         toKeep->which = type;
2818         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2819         toKeep->u.create = odr_nullval();
2820         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2821
2822         r->u.adminService->u.esRequest->notToKeep = notToKeep =
2823             (Z_ESAdminOriginPartNotToKeep *)
2824             odr_malloc(p->odr_out,
2825                        sizeof(*r->u.adminService->u.esRequest->notToKeep));
2826         notToKeep->which = Z_ESAdminOriginPartNotToKeep_recordsWillFollow;
2827         notToKeep->u.recordsWillFollow = odr_nullval();
2828         if (toKeepP)
2829             *toKeepP = toKeep;
2830         if (notToKeepP)
2831             *notToKeepP = notToKeep;
2832     }
2833     return apdu;
2834 }
2835
2836 static Z_APDU *create_xmlupdate_package(ZOOM_package p)
2837 {
2838     Z_APDU *apdu = create_es_package(p, VAL_XMLES);
2839     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2840     Z_External *ext = (Z_External *) odr_malloc(p->odr_out, sizeof(*ext));
2841     const char *doc = ZOOM_options_get(p->options, "doc");
2842
2843     if (!doc)
2844         doc = "";
2845
2846     req->taskSpecificParameters = ext;
2847     ext->direct_reference = req->packageType;
2848     ext->descriptor = 0;
2849     ext->indirect_reference = 0;
2850
2851     ext->which = Z_External_octet;
2852     ext->u.single_ASN1_type =
2853         odr_create_Odr_oct(p->odr_out, (const unsigned char *) doc,
2854                            strlen(doc));
2855     return apdu;
2856 }
2857
2858 static Z_APDU *create_update_package(ZOOM_package p)
2859 {
2860     Z_APDU *apdu = 0;
2861     const char *first_db = "Default";
2862     int num_db;
2863     char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2864     const char *action = ZOOM_options_get(p->options, "action");
2865     const char *recordIdOpaque = ZOOM_options_get(p->options, "recordIdOpaque");
2866     const char *recordIdNumber = ZOOM_options_get(p->options, "recordIdNumber");
2867     const char *record_buf = ZOOM_options_get(p->options, "record");
2868     const char *syntax_str = ZOOM_options_get(p->options, "syntax");
2869     int syntax_oid = VAL_NONE;
2870     int action_no = -1;
2871
2872     if (syntax_str)
2873         syntax_oid = oid_getvalbyname(syntax_str);
2874     if (!record_buf)
2875     {
2876         record_buf = "void";
2877         syntax_oid = VAL_SUTRS;
2878     }
2879     if (syntax_oid == VAL_NONE)
2880         syntax_oid = VAL_TEXT_XML;
2881
2882     if (num_db > 0)
2883         first_db = db[0];
2884
2885     if (!action)
2886         action = "specialUpdate";
2887
2888     if (!strcmp(action, "recordInsert"))
2889         action_no = Z_IUOriginPartToKeep_recordInsert;
2890     else if (!strcmp(action, "recordReplace"))
2891         action_no = Z_IUOriginPartToKeep_recordReplace;
2892     else if (!strcmp(action, "recordDelete"))
2893         action_no = Z_IUOriginPartToKeep_recordDelete;
2894     else if (!strcmp(action, "elementUpdate"))
2895         action_no = Z_IUOriginPartToKeep_elementUpdate;
2896     else if (!strcmp(action, "specialUpdate"))
2897         action_no = Z_IUOriginPartToKeep_specialUpdate;
2898     else
2899         return 0;
2900
2901     apdu = create_es_package (p, VAL_DBUPDATE);
2902     if (apdu)
2903     {
2904         Z_IUOriginPartToKeep *toKeep;
2905         Z_IUSuppliedRecords *notToKeep;
2906         Z_External *r = (Z_External *)
2907             odr_malloc (p->odr_out, sizeof(*r));
2908
2909         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2910
2911         r->direct_reference =
2912             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2913                                    VAL_DBUPDATE);
2914         r->descriptor = 0;
2915         r->which = Z_External_update;
2916         r->indirect_reference = 0;
2917         r->u.update = (Z_IUUpdate *)
2918             odr_malloc(p->odr_out, sizeof(*r->u.update));
2919
2920         r->u.update->which = Z_IUUpdate_esRequest;
2921         r->u.update->u.esRequest = (Z_IUUpdateEsRequest *)
2922             odr_malloc(p->odr_out, sizeof(*r->u.update->u.esRequest));
2923         toKeep = r->u.update->u.esRequest->toKeep =
2924             (Z_IUOriginPartToKeep *)
2925             odr_malloc(p->odr_out, sizeof(*toKeep));
2926
2927         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2928         toKeep->schema = 0;
2929         toKeep->elementSetName = 0;
2930         toKeep->actionQualifier = 0;
2931         toKeep->action = odr_intdup(p->odr_out, action_no);
2932
2933         notToKeep = r->u.update->u.esRequest->notToKeep =
2934             (Z_IUSuppliedRecords *)
2935             odr_malloc(p->odr_out, sizeof(*notToKeep));
2936         notToKeep->num = 1;
2937         notToKeep->elements = (Z_IUSuppliedRecords_elem **)
2938             odr_malloc(p->odr_out, sizeof(*notToKeep->elements));
2939         notToKeep->elements[0] = (Z_IUSuppliedRecords_elem *)
2940             odr_malloc(p->odr_out, sizeof(**notToKeep->elements));
2941         notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_opaque;
2942         if (recordIdOpaque)
2943         {
2944             notToKeep->elements[0]->u.opaque =
2945                 odr_create_Odr_oct(p->odr_out,
2946                                    (const unsigned char *) recordIdOpaque,
2947                                    strlen(recordIdOpaque));
2948         }
2949         else if (recordIdNumber)
2950         {
2951             notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_number;
2952
2953             notToKeep->elements[0]->u.number =
2954                 odr_intdup(p->odr_out, atoi(recordIdNumber));
2955         }
2956         else
2957             notToKeep->elements[0]->u.opaque = 0;
2958         notToKeep->elements[0]->supplementalId = 0;
2959         notToKeep->elements[0]->correlationInfo = 0;
2960         notToKeep->elements[0]->record =
2961             z_ext_record(p->odr_out, syntax_oid,
2962                          record_buf, strlen(record_buf));
2963     }
2964     if (0 && apdu)
2965     {
2966        ODR print = odr_createmem(ODR_PRINT);
2967
2968        z_APDU(print, &apdu, 0, 0);
2969        odr_destroy(print);
2970     }
2971     return apdu;
2972 }
2973
2974 ZOOM_API(void)
2975     ZOOM_package_send (ZOOM_package p, const char *type)
2976 {
2977     Z_APDU *apdu = 0;
2978     ZOOM_connection c;
2979     if (!p)
2980         return;
2981     c = p->connection;
2982     odr_reset (p->odr_out);
2983     xfree (p->buf_out);
2984     p->buf_out = 0;
2985     if (!strcmp(type, "itemorder"))
2986     {
2987         apdu = create_es_package (p, VAL_ITEMORDER);
2988         if (apdu)
2989         {
2990             Z_External *r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
2991
2992             r->direct_reference =
2993                 yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2994                                        VAL_ITEMORDER);
2995             r->descriptor = 0;
2996             r->which = Z_External_itemOrder;
2997             r->indirect_reference = 0;
2998             r->u.itemOrder = encode_item_order (p);
2999
3000             apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3001         }
3002     }
3003     else if (!strcmp(type, "create"))  /* create database */
3004     {
3005         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_create,
3006                                     0, 0);
3007     }
3008     else if (!strcmp(type, "drop"))  /* drop database */
3009     {
3010         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_drop,
3011                                     0, 0);
3012     }
3013     else if (!strcmp(type, "commit"))  /* commit changes */
3014     {
3015         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_commit,
3016                                     0, 0);
3017     }
3018     else if (!strcmp(type, "update")) /* update record(s) */
3019     {
3020         apdu = create_update_package(p);
3021     }
3022     else if (!strcmp(type, "xmlupdate"))
3023     {
3024         apdu = create_xmlupdate_package(p);
3025     }
3026     if (apdu)
3027     {
3028         if (encode_APDU(p->connection, apdu, p->odr_out) == 0)
3029         {
3030             char *buf;
3031
3032             ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_PACKAGE);
3033             task->u.package = p;
3034             buf = odr_getbuf(p->odr_out, &p->len_out, 0);
3035             p->buf_out = (char *) xmalloc (p->len_out);
3036             memcpy (p->buf_out, buf, p->len_out);
3037
3038             (p->refcount)++;
3039             if (!c->async)
3040             {
3041                 while (ZOOM_event (1, &c))
3042                     ;
3043             }
3044         }
3045     }
3046 }
3047
3048 ZOOM_API(ZOOM_package)
3049     ZOOM_connection_package (ZOOM_connection c, ZOOM_options options)
3050 {
3051     ZOOM_package p = (ZOOM_package) xmalloc (sizeof(*p));
3052
3053     p->connection = c;
3054     p->odr_out = odr_createmem (ODR_ENCODE);
3055     p->options = ZOOM_options_create_with_parent2 (options, c->options);
3056     p->refcount = 1;
3057     p->buf_out = 0;
3058     p->len_out = 0;
3059     return p;
3060 }
3061
3062 ZOOM_API(void)
3063     ZOOM_package_destroy(ZOOM_package p)
3064 {
3065     if (!p)
3066         return;
3067     (p->refcount)--;
3068     if (p->refcount == 0)
3069     {
3070         odr_destroy (p->odr_out);
3071         xfree (p->buf_out);
3072
3073         ZOOM_options_destroy (p->options);
3074         xfree (p);
3075     }
3076 }
3077
3078 ZOOM_API(const char *)
3079 ZOOM_package_option_get (ZOOM_package p, const char *key)
3080 {
3081     return ZOOM_options_get (p->options, key);
3082 }
3083
3084
3085 ZOOM_API(void)
3086 ZOOM_package_option_set (ZOOM_package p, const char *key,
3087                               const char *val)
3088 {
3089     ZOOM_options_set (p->options, key, val);
3090 }
3091
3092 static int ZOOM_connection_exec_task (ZOOM_connection c)
3093 {
3094     ZOOM_task task = c->tasks;
3095     zoom_ret ret = zoom_complete;
3096
3097     if (!task)
3098         return 0;
3099     yaz_log(log_details, "%p ZOOM_connection_exec_task type=%d run=%d",
3100              c, task->which, task->running);
3101     if (c->error != ZOOM_ERROR_NONE)
3102     {
3103         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3104                 "removing tasks because of error = %d", c, c->error);
3105         ZOOM_connection_remove_tasks (c);
3106         return 0;
3107     }
3108     if (task->running)
3109     {
3110         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3111                  "task already running", c);
3112         return 0;
3113     }
3114     task->running = 1;
3115     ret = zoom_complete;
3116     if (c->cs || task->which == ZOOM_TASK_CONNECT)
3117     {
3118         switch (task->which)
3119         {
3120         case ZOOM_TASK_SEARCH:
3121             if (c->proto == PROTO_HTTP)
3122                 ret = ZOOM_connection_srw_send_search(c);
3123             else
3124                 ret = ZOOM_connection_send_search(c);
3125             break;
3126         case ZOOM_TASK_RETRIEVE:
3127             if (c->proto == PROTO_HTTP)
3128                 ret = ZOOM_connection_srw_send_search(c);
3129             else
3130                 ret = send_present (c);
3131             break;
3132         case ZOOM_TASK_CONNECT:
3133             ret = do_connect(c);
3134             break;
3135         case ZOOM_TASK_SCAN:
3136             ret = send_scan(c);
3137             break;
3138         case ZOOM_TASK_PACKAGE:
3139             ret = send_package(c);
3140             break;
3141         case ZOOM_TASK_SORT:
3142             c->tasks->u.sort.resultset->r_sort_spec =
3143                 c->tasks->u.sort.q->sort_spec;
3144             ret = send_sort(c, c->tasks->u.sort.resultset);
3145             break;
3146         }
3147     }
3148     else
3149     {
3150         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3151                 "remove tasks because no connection exist", c);
3152         ZOOM_connection_remove_tasks (c);
3153     }
3154     if (ret == zoom_complete)
3155     {
3156         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3157                  "task removed (complete)", c);
3158         ZOOM_connection_remove_task (c);
3159         return 0;
3160     }
3161     yaz_log(log_details, "%p ZOOM_connection_exec_task "
3162             "task pending", c);
3163     return 1;
3164 }
3165
3166 static zoom_ret send_sort_present (ZOOM_connection c)
3167 {
3168     zoom_ret r = zoom_complete;
3169
3170     if (c->tasks && c->tasks->which == ZOOM_TASK_SEARCH)
3171         r = send_sort (c, c->tasks->u.search.resultset);
3172     if (r == zoom_complete)
3173         r = send_present (c);
3174     return r;
3175 }
3176
3177 static int es_response (ZOOM_connection c,
3178                         Z_ExtendedServicesResponse *res)
3179 {
3180     if (!c->tasks || c->tasks->which != ZOOM_TASK_PACKAGE)
3181         return 0;
3182     if (res->diagnostics && res->num_diagnostics > 0)
3183         response_diag(c, res->diagnostics[0]);
3184     if (res->taskPackage &&
3185         res->taskPackage->which == Z_External_extendedService)
3186     {
3187         Z_TaskPackage *taskPackage = res->taskPackage->u.extendedService;
3188         Odr_oct *id = taskPackage->targetReference;
3189
3190         if (id)
3191             ZOOM_options_setl (c->tasks->u.package->options,
3192                                "targetReference", (char*) id->buf, id->len);
3193     }
3194     if (res->taskPackage &&
3195         res->taskPackage->which == Z_External_octet)
3196     {
3197         Odr_oct *doc = res->taskPackage->u.octet_aligned;
3198         ZOOM_options_setl (c->tasks->u.package->options,
3199                            "xmlUpdateDoc", (char*) doc->buf, doc->len);
3200     }
3201     return 1;
3202 }
3203
3204 static void interpret_init_diag(ZOOM_connection c,
3205                                 Z_DiagnosticFormat *diag)
3206 {
3207     if (diag->num > 0)
3208     {
3209         Z_DiagnosticFormat_s *ds = diag->elements[0];
3210         if (ds->which == Z_DiagnosticFormat_s_defaultDiagRec)
3211             response_default_diag(c, ds->u.defaultDiagRec);
3212     }
3213 }
3214
3215
3216 static void interpret_otherinformation_field(ZOOM_connection c,
3217                                              Z_OtherInformation *ui)
3218 {
3219     int i;
3220     for (i = 0; i < ui->num_elements; i++)
3221     {
3222         Z_OtherInformationUnit *unit = ui->list[i];
3223         if (unit->which == Z_OtherInfo_externallyDefinedInfo &&
3224             unit->information.externallyDefinedInfo &&
3225             unit->information.externallyDefinedInfo->which ==
3226             Z_External_diag1)
3227         {
3228             interpret_init_diag(c, unit->information.externallyDefinedInfo->u.diag1);
3229         }
3230     }
3231 }
3232
3233 static void recv_apdu (ZOOM_connection c, Z_APDU *apdu)
3234 {
3235     Z_InitResponse *initrs;
3236
3237     c->mask = 0;
3238     yaz_log(log_details, "%p recv_apdu apdu->which=%d", c, apdu->which);
3239     switch(apdu->which)
3240     {
3241     case Z_APDU_initResponse:
3242         yaz_log(log_api, "%p recv_apd: Received Init response", c);
3243         initrs = apdu->u.initResponse;
3244         ZOOM_connection_option_set(c, "serverImplementationId",
3245                                    initrs->implementationId ?
3246                                    initrs->implementationId : "");
3247         ZOOM_connection_option_set(c, "serverImplementationName",
3248                                    initrs->implementationName ?
3249                                    initrs->implementationName : "");
3250         ZOOM_connection_option_set(c, "serverImplementationVersion",
3251                                    initrs->implementationVersion ?
3252                                    initrs->implementationVersion : "");
3253         /* Set the three old options too, for old applications */
3254         ZOOM_connection_option_set(c, "targetImplementationId",
3255                                    initrs->implementationId ?
3256                                    initrs->implementationId : "");
3257         ZOOM_connection_option_set(c, "targetImplementationName",
3258                                    initrs->implementationName ?
3259                                    initrs->implementationName : "");
3260         ZOOM_connection_option_set(c, "targetImplementationVersion",
3261                                    initrs->implementationVersion ?
3262                                    initrs->implementationVersion : "");
3263         if (!*initrs->result)
3264         {
3265             Z_External *uif = initrs->userInformationField;
3266
3267             set_ZOOM_error(c, ZOOM_ERROR_INIT, 0); /* default error */
3268
3269             if (uif && uif->which == Z_External_userInfo1)
3270                 interpret_otherinformation_field(c, uif->u.userInfo1);
3271         }
3272         else
3273         {
3274             char *cookie =
3275                 yaz_oi_get_string_oidval (&apdu->u.initResponse->otherInfo,
3276                                           VAL_COOKIE, 1, 0);
3277             xfree (c->cookie_in);
3278             c->cookie_in = 0;
3279             if (cookie)
3280                 c->cookie_in = xstrdup(cookie);
3281             if (ODR_MASK_GET(initrs->options, Z_Options_namedResultSets) &&
3282                 ODR_MASK_GET(initrs->protocolVersion, Z_ProtocolVersion_3))
3283                 c->support_named_resultsets = 1;
3284             if (c->tasks)
3285             {
3286                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
3287                 ZOOM_connection_remove_task (c);
3288             }
3289             ZOOM_connection_exec_task (c);
3290         }
3291         if (ODR_MASK_GET(initrs->options, Z_Options_negotiationModel))
3292         {
3293             NMEM tmpmem = nmem_create();
3294             Z_CharSetandLanguageNegotiation *p =
3295                 yaz_get_charneg_record(initrs->otherInfo);
3296
3297             if (p)
3298             {
3299                 char *charset = NULL, *lang = NULL;
3300                 int sel;
3301
3302                 yaz_get_response_charneg(tmpmem, p, &charset, &lang, &sel);
3303                 yaz_log(log_details, "%p recv_apdu target accepted: "
3304                         "charset %s, language %s, select %d",
3305                         c,
3306                         charset ? charset : "none", lang ? lang : "none", sel);
3307                 if (charset)
3308                     ZOOM_connection_option_set (c, "negotiation-charset",
3309                                                 charset);
3310                 if (lang)
3311                     ZOOM_connection_option_set (c, "negotiation-lang",
3312                                                 lang);
3313
3314                 ZOOM_connection_option_set (
3315                     c,  "negotiation-charset-in-effect-for-records",
3316                     (sel != 0) ? "1" : "0");
3317                 nmem_destroy(tmpmem);
3318             }
3319         }
3320         break;
3321     case Z_APDU_searchResponse:
3322         yaz_log(log_api, "%p recv_apdu Search response", c);
3323         handle_search_response (c, apdu->u.searchResponse);
3324         if (send_sort_present (c) == zoom_complete)
3325             ZOOM_connection_remove_task (c);
3326         break;
3327     case Z_APDU_presentResponse:
3328         yaz_log(log_api, "%p recv_apdu Present response", c);
3329         handle_present_response (c, apdu->u.presentResponse);
3330         if (send_present (c) == zoom_complete)
3331             ZOOM_connection_remove_task (c);
3332         break;
3333     case Z_APDU_sortResponse:
3334         yaz_log(log_api, "%p recv_apdu Sort response", c);
3335         sort_response (c, apdu->u.sortResponse);
3336         if (send_present (c) == zoom_complete)
3337             ZOOM_connection_remove_task (c);
3338         break;
3339     case Z_APDU_scanResponse:
3340         yaz_log(log_api, "%p recv_apdu Scan response", c);
3341         scan_response (c, apdu->u.scanResponse);
3342         ZOOM_connection_remove_task (c);
3343         break;
3344     case Z_APDU_extendedServicesResponse:
3345         yaz_log(log_api, "%p recv_apdu Extended Services response", c);
3346         es_response (c, apdu->u.extendedServicesResponse);
3347         ZOOM_connection_remove_task (c);
3348         break;
3349     case Z_APDU_close:
3350         yaz_log(log_api, "%p recv_apdu Close PDU", c);
3351         if (c->reconnect_ok)
3352         {
3353             do_close(c);
3354             c->tasks->running = 0;
3355             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3356         }
3357         else
3358         {
3359             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3360             do_close(c);
3361         }
3362         break;
3363     default:
3364         yaz_log(log_api, "%p Received unknown PDU", c);
3365         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3366         do_close(c);
3367     }
3368 }
3369
3370 #if HAVE_XML2
3371 static void handle_srw_response(ZOOM_connection c,
3372                                 Z_SRW_searchRetrieveResponse *res)
3373 {
3374     ZOOM_resultset resultset = 0;
3375     int i;
3376     NMEM nmem;
3377     ZOOM_Event event;
3378
3379     if (!c->tasks)
3380         return;
3381
3382     if (c->tasks->which == ZOOM_TASK_SEARCH)
3383         resultset = c->tasks->u.search.resultset;
3384     else if (c->tasks->which == ZOOM_TASK_RETRIEVE)
3385         resultset = c->tasks->u.retrieve.resultset;
3386     else
3387         return ;
3388
3389     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
3390     ZOOM_connection_put_event(c, event);
3391
3392     resultset->size = 0;
3393
3394     yaz_log(log_details, "%p handle_srw_response got SRW response OK", c);
3395
3396     if (res->numberOfRecords)
3397         resultset->size = *res->numberOfRecords;
3398
3399     for (i = 0; i<res->num_records; i++)
3400     {
3401         int pos;
3402
3403         Z_NamePlusRecord *npr = (Z_NamePlusRecord *)
3404             odr_malloc(c->odr_in, sizeof(Z_NamePlusRecord));
3405
3406         if (res->records[i].recordPosition &&
3407             *res->records[i].recordPosition > 0)
3408             pos = *res->records[i].recordPosition - 1;
3409         else
3410             pos = resultset->start + i;
3411
3412         npr->databaseName = 0;
3413         npr->which = Z_NamePlusRecord_databaseRecord;
3414         npr->u.databaseRecord = (Z_External *)
3415             odr_malloc(c->odr_in, sizeof(Z_External));
3416         npr->u.databaseRecord->descriptor = 0;
3417         npr->u.databaseRecord->direct_reference =
3418             yaz_oidval_to_z3950oid(c->odr_in, CLASS_RECSYN, VAL_TEXT_XML);
3419         npr->u.databaseRecord->which = Z_External_octet;
3420
3421         npr->u.databaseRecord->u.octet_aligned = (Odr_oct *)
3422             odr_malloc(c->odr_in, sizeof(Odr_oct));
3423         npr->u.databaseRecord->u.octet_aligned->buf = (unsigned char*)
3424             res->records[i].recordData_buf;
3425         npr->u.databaseRecord->u.octet_aligned->len =
3426             npr->u.databaseRecord->u.octet_aligned->size =
3427             res->records[i].recordData_len;
3428         record_cache_add (resultset, npr, pos);
3429     }
3430     if (res->num_diagnostics > 0)
3431     {
3432         const char *uri = res->diagnostics[0].uri;
3433         if (uri)
3434         {
3435             int code = 0;
3436             const char *cp;
3437             if ((cp = strrchr(uri, '/')))
3438                 code = atoi(cp+1);
3439             set_dset_error(c, code, uri,
3440                            res->diagnostics[0].details, 0);
3441         }
3442     }
3443     nmem = odr_extract_mem(c->odr_in);
3444     nmem_transfer(resultset->odr->mem, nmem);
3445     nmem_destroy(nmem);
3446 }
3447 #endif
3448
3449 #if HAVE_XML2
3450 static void handle_http(ZOOM_connection c, Z_HTTP_Response *hres)
3451 {
3452     int ret = -1;
3453     const char *content_type = z_HTTP_header_lookup(hres->headers,
3454                                                     "Content-Type");
3455     const char *connection_head = z_HTTP_header_lookup(hres->headers,
3456                                                        "Connection");
3457     c->mask = 0;
3458     yaz_log(log_details, "%p handle_http", c);
3459
3460     if (content_type && !yaz_strcmp_del("text/xml", content_type, "; "))
3461     {
3462         Z_SOAP *soap_package = 0;
3463         ODR o = c->odr_in;
3464         Z_SOAP_Handler soap_handlers[2] = {
3465             {"http://www.loc.gov/zing/srw/", 0,
3466              (Z_SOAP_fun) yaz_srw_codec},
3467             {0, 0, 0}
3468         };
3469         ret = z_soap_codec(o, &soap_package,
3470                            &hres->content_buf, &hres->content_len,
3471                            soap_handlers);
3472         if (!ret && soap_package->which == Z_SOAP_generic &&
3473             soap_package->u.generic->no == 0)
3474         {
3475             Z_SRW_PDU *sr = (Z_SRW_PDU*) soap_package->u.generic->p;
3476             if (sr->which == Z_SRW_searchRetrieve_response)
3477                 handle_srw_response(c, sr->u.response);
3478             else
3479                 ret = -1;
3480         }
3481         else if (!ret && (soap_package->which == Z_SOAP_fault
3482                           || soap_package->which == Z_SOAP_error))
3483         {
3484             set_HTTP_error(c, hres->code,
3485                            soap_package->u.fault->fault_code,
3486                            soap_package->u.fault->fault_string);
3487         }
3488         else
3489             ret = -1;
3490     }
3491     if (ret)
3492     {
3493         if (hres->code != 200)
3494             set_HTTP_error(c, hres->code, 0, 0);
3495         else
3496             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3497         do_close (c);
3498     }
3499     ZOOM_connection_remove_task(c);
3500     if (!strcmp(hres->version, "1.0"))
3501     {
3502         /* HTTP 1.0: only if Keep-Alive we stay alive.. */
3503         if (!connection_head || strcmp(connection_head, "Keep-Alive"))
3504             do_close(c);
3505     }
3506     else
3507     {
3508         /* HTTP 1.1: only if no close we stay alive .. */
3509         if (connection_head && !strcmp(connection_head, "close"))
3510             do_close(c);
3511     }
3512 }
3513 #endif
3514
3515 static int do_read (ZOOM_connection c)
3516 {
3517     int r, more;
3518     ZOOM_Event event;
3519
3520     event = ZOOM_Event_create (ZOOM_EVENT_RECV_DATA);
3521     ZOOM_connection_put_event (c, event);
3522
3523     r = cs_get (c->cs, &c->buf_in, &c->len_in);
3524     more = cs_more(c->cs);
3525     yaz_log(log_details, "%p do_read len=%d more=%d", c, r, more);
3526     if (r == 1)
3527         return 0;
3528     if (r <= 0)
3529     {
3530         if (c->reconnect_ok)
3531         {
3532             do_close (c);
3533             c->reconnect_ok = 0;
3534             yaz_log(log_details, "%p do_read reconnect read", c);
3535             c->tasks->running = 0;
3536             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3537         }
3538         else
3539         {
3540             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3541             do_close (c);
3542         }
3543     }
3544     else
3545     {
3546         Z_GDU *gdu;
3547         ZOOM_Event event;
3548
3549         odr_reset (c->odr_in);
3550         odr_setbuf (c->odr_in, c->buf_in, r, 0);
3551         event = ZOOM_Event_create (ZOOM_EVENT_RECV_APDU);
3552         ZOOM_connection_put_event (c, event);
3553
3554         if (!z_GDU (c->odr_in, &gdu, 0, 0))
3555         {
3556             int x;
3557             int err = odr_geterrorx(c->odr_in, &x);
3558             char msg[60];
3559             const char *element = odr_getelement(c->odr_in);
3560             sprintf (msg, "ODR code %d:%d element=%-20s",
3561                      err, x, element ? element : "<unknown>");
3562             set_ZOOM_error(c, ZOOM_ERROR_DECODE, msg);
3563             do_close (c);
3564         }
3565         else if (gdu->which == Z_GDU_Z3950)
3566             recv_apdu (c, gdu->u.z3950);
3567         else if (gdu->which == Z_GDU_HTTP_Response)
3568         {
3569 #if HAVE_XML2
3570             handle_http (c, gdu->u.HTTP_Response);
3571 #else
3572             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3573             do_close (c);
3574 #endif
3575         }
3576         c->reconnect_ok = 0;
3577     }
3578     return 1;
3579 }
3580
3581 static zoom_ret do_write_ex (ZOOM_connection c, char *buf_out, int len_out)
3582 {
3583     int r;
3584     ZOOM_Event event;
3585
3586     event = ZOOM_Event_create(ZOOM_EVENT_SEND_DATA);
3587     ZOOM_connection_put_event (c, event);
3588
3589     yaz_log(log_details, "%p do_write_ex len=%d", c, len_out);
3590     if ((r = cs_put(c->cs, buf_out, len_out)) < 0)
3591     {
3592         yaz_log(log_details, "%p do_write_ex write failed", c);
3593         if (c->reconnect_ok)
3594         {
3595             do_close (c);
3596             c->reconnect_ok = 0;
3597             yaz_log(log_details, "%p do_write_ex reconnect write", c);
3598             c->tasks->running = 0;
3599             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3600             return zoom_pending;
3601         }
3602         if (c->state == STATE_CONNECTING)
3603             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3604         else
3605             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3606         do_close (c);
3607         return zoom_complete;
3608     }
3609     else if (r == 1)
3610     {
3611         c->mask = ZOOM_SELECT_EXCEPT;
3612         if (c->cs->io_pending & CS_WANT_WRITE)
3613             c->mask += ZOOM_SELECT_WRITE;
3614         if (c->cs->io_pending & CS_WANT_READ)
3615             c->mask += ZOOM_SELECT_READ;
3616         yaz_log(log_details, "%p do_write_ex write incomplete mask=%d",
3617                 c, c->mask);
3618     }
3619     else
3620     {
3621         c->mask = ZOOM_SELECT_READ|ZOOM_SELECT_EXCEPT;
3622         yaz_log(log_details, "%p do_write_ex write complete mask=%d",
3623                 c, c->mask);
3624     }
3625     return zoom_pending;
3626 }
3627
3628 static zoom_ret do_write(ZOOM_connection c)
3629 {
3630     return do_write_ex (c, c->buf_out, c->len_out);
3631 }
3632
3633
3634 ZOOM_API(const char *)
3635 ZOOM_connection_option_get (ZOOM_connection c, const char *key)
3636 {
3637     return ZOOM_options_get (c->options, key);
3638 }
3639
3640 ZOOM_API(const char *)
3641 ZOOM_connection_option_getl (ZOOM_connection c, const char *key, int *lenp)
3642 {
3643     return ZOOM_options_getl (c->options, key, lenp);
3644 }
3645
3646 ZOOM_API(void)
3647 ZOOM_connection_option_set (ZOOM_connection c, const char *key,
3648                             const char *val)
3649 {
3650     ZOOM_options_set (c->options, key, val);
3651 }
3652
3653 ZOOM_API(void)
3654 ZOOM_connection_option_setl (ZOOM_connection c, const char *key,
3655                              const char *val, int len)
3656 {
3657     ZOOM_options_setl (c->options, key, val, len);
3658 }
3659
3660 ZOOM_API(const char *)
3661 ZOOM_resultset_option_get (ZOOM_resultset r, const char *key)
3662 {
3663     return ZOOM_options_get (r->options, key);
3664 }
3665
3666 ZOOM_API(void)
3667 ZOOM_resultset_option_set (ZOOM_resultset r, const char *key,
3668                                   const char *val)
3669 {
3670     ZOOM_options_set (r->options, key, val);
3671 }
3672
3673
3674 ZOOM_API(int)
3675 ZOOM_connection_errcode (ZOOM_connection c)
3676 {
3677     return ZOOM_connection_error (c, 0, 0);
3678 }
3679
3680 ZOOM_API(const char *)
3681 ZOOM_connection_errmsg (ZOOM_connection c)
3682 {
3683     const char *msg;
3684     ZOOM_connection_error (c, &msg, 0);
3685     return msg;
3686 }
3687
3688 ZOOM_API(const char *)
3689 ZOOM_connection_addinfo (ZOOM_connection c)
3690 {
3691     const char *addinfo;
3692     ZOOM_connection_error (c, 0, &addinfo);
3693     return addinfo;
3694 }
3695
3696 ZOOM_API(const char *)
3697 ZOOM_connection_diagset (ZOOM_connection c)
3698 {
3699     const char *diagset;
3700     ZOOM_connection_error_x (c, 0, 0, &diagset);
3701     return diagset;
3702 }
3703
3704 ZOOM_API(const char *)
3705 ZOOM_diag_str (int error)
3706 {
3707     switch (error)
3708     {
3709     case ZOOM_ERROR_NONE:
3710         return "No error";
3711     case ZOOM_ERROR_CONNECT:
3712         return "Connect failed";
3713     case ZOOM_ERROR_MEMORY:
3714         return "Out of memory";
3715     case ZOOM_ERROR_ENCODE:
3716         return "Encoding failed";
3717     case ZOOM_ERROR_DECODE:
3718         return "Decoding failed";
3719     case ZOOM_ERROR_CONNECTION_LOST:
3720         return "Connection lost";
3721     case ZOOM_ERROR_INIT:
3722         return "Init rejected";
3723     case ZOOM_ERROR_INTERNAL:
3724         return "Internal failure";
3725     case ZOOM_ERROR_TIMEOUT:
3726         return "Timeout";
3727     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
3728         return "Unsupported protocol";
3729     case ZOOM_ERROR_UNSUPPORTED_QUERY:
3730         return "Unsupported query type";
3731     case ZOOM_ERROR_INVALID_QUERY:
3732         return "Invalid query";
3733     case ZOOM_ERROR_CQL_PARSE:
3734         return "CQL parsing error";
3735     case ZOOM_ERROR_CQL_TRANSFORM:
3736         return "CQL transformation error";
3737     default:
3738         return diagbib1_str (error);
3739     }
3740 }
3741
3742 ZOOM_API(int)
3743 ZOOM_connection_error_x (ZOOM_connection c, const char **cp,
3744                          const char **addinfo, const char **diagset)
3745 {
3746     int error = c->error;
3747     if (cp)
3748     {
3749         if (!c->diagset || !strcmp(c->diagset, "ZOOM"))
3750             *cp = ZOOM_diag_str(error);
3751         else if (!strcmp(c->diagset, "HTTP"))
3752             *cp = z_HTTP_errmsg(c->error);
3753         else if (!strcmp(c->diagset, "Bib-1"))
3754             *cp = ZOOM_diag_str(error);
3755         else if (!strcmp(c->diagset, "info:srw/diagnostic/1"))
3756             *cp = yaz_diag_srw_str(c->error);
3757         else
3758             *cp = "Unknown error and diagnostic set";
3759     }
3760     if (addinfo)
3761         *addinfo = c->addinfo ? c->addinfo : "";
3762     if (diagset)
3763         *diagset = c->diagset ? c->diagset : "";
3764     return c->error;
3765 }
3766
3767 ZOOM_API(int)
3768 ZOOM_connection_error (ZOOM_connection c, const char **cp,
3769                        const char **addinfo)
3770 {
3771     return ZOOM_connection_error_x(c, cp, addinfo, 0);
3772 }
3773
3774 static int ZOOM_connection_do_io(ZOOM_connection c, int mask)
3775 {
3776     ZOOM_Event event = 0;
3777     int r = cs_look(c->cs);
3778     yaz_log(log_details, "%p ZOOM_connection_do_io mask=%d cs_look=%d",
3779              c, mask, r);
3780
3781     if (r == CS_NONE)
3782     {
3783         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
3784         set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3785         do_close (c);
3786         ZOOM_connection_put_event (c, event);
3787     }
3788     else if (r == CS_CONNECT)
3789     {
3790         int ret;
3791         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
3792
3793         ret = cs_rcvconnect (c->cs);
3794         yaz_log(log_details, "%p ZOOM_connection_do_io "
3795                 "cs_rcvconnect returned %d", c, ret);
3796         if (ret == 1)
3797         {
3798             c->mask = ZOOM_SELECT_EXCEPT;
3799             if (c->cs->io_pending & CS_WANT_WRITE)
3800                 c->mask += ZOOM_SELECT_WRITE;
3801             if (c->cs->io_pending & CS_WANT_READ)
3802                 c->mask += ZOOM_SELECT_READ;
3803             ZOOM_connection_put_event (c, event);
3804         }
3805         else if (ret == 0)
3806         {
3807             ZOOM_connection_put_event (c, event);
3808             get_cert(c);
3809             if (c->proto == PROTO_Z3950)
3810                 ZOOM_connection_send_init(c);
3811             else
3812             {
3813                 /* no init request for SRW .. */
3814                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
3815                 ZOOM_connection_remove_task (c);
3816                 c->mask = 0;
3817                 ZOOM_connection_exec_task (c);
3818             }
3819             c->state = STATE_ESTABLISHED;
3820         }
3821         else
3822         {
3823             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3824             do_close (c);
3825             ZOOM_connection_put_event (c, event);
3826         }
3827     }
3828     else
3829     {
3830         if (mask & ZOOM_SELECT_READ)
3831             do_read (c);
3832         if (c->cs && (mask & ZOOM_SELECT_WRITE))
3833             do_write (c);
3834     }
3835     return 1;
3836 }
3837
3838 ZOOM_API(int)
3839 ZOOM_connection_last_event(ZOOM_connection cs)
3840 {
3841     if (!cs)
3842         return ZOOM_EVENT_NONE;
3843     return cs->last_event;
3844 }
3845
3846 ZOOM_API(int)
3847 ZOOM_event (int no, ZOOM_connection *cs)
3848 {
3849     int timeout = 30;      /* default timeout in seconds */
3850     int timeout_set = 0;   /* whether it was overriden at all */
3851 #if HAVE_SYS_POLL_H
3852     struct pollfd pollfds[1024];
3853     ZOOM_connection poll_cs[1024];
3854 #else
3855     struct timeval tv;
3856     fd_set input, output, except;
3857 #endif
3858     int i, r, nfds;
3859     int max_fd = 0;
3860
3861     for (i = 0; i<no; i++)
3862     {
3863         ZOOM_connection c = cs[i];
3864         ZOOM_Event event;
3865         if (c && (event = ZOOM_connection_get_event(c)))
3866         {
3867             ZOOM_Event_destroy (event);
3868             return i+1;
3869         }
3870     }
3871     for (i = 0; i<no; i++)
3872     {
3873         ZOOM_connection c = cs[i];
3874         ZOOM_Event event;
3875         if (c && ZOOM_connection_exec_task (c))
3876         {
3877             if ((event = ZOOM_connection_get_event(c)))
3878             {
3879                 ZOOM_Event_destroy (event);
3880                 return i+1;
3881             }
3882         }
3883     }
3884 #if HAVE_SYS_POLL_H
3885
3886 #else
3887     FD_ZERO (&input);
3888     FD_ZERO (&output);
3889     FD_ZERO (&except);
3890 #endif
3891     nfds = 0;
3892     for (i = 0; i<no; i++)
3893     {
3894         ZOOM_connection c = cs[i];
3895         int fd, mask;
3896         int this_timeout;
3897
3898         if (!c)
3899             continue;
3900         fd = z3950_connection_socket(c);
3901         mask = z3950_connection_mask(c);
3902
3903         if (fd == -1)
3904             continue;
3905         if (max_fd < fd)
3906             max_fd = fd;
3907
3908         /* -1 is used for indefinite timeout (no timeout), so -2 here. */
3909         this_timeout = ZOOM_options_get_int (c->options, "timeout", -2);
3910         if (this_timeout != -2)
3911         {
3912             /* ensure the minimum timeout is used */
3913             if (!timeout_set)
3914                 timeout = this_timeout;
3915             else if (this_timeout != -1 && this_timeout < timeout)
3916                 timeout = this_timeout;
3917             timeout_set = 1;
3918         }
3919 #if HAVE_SYS_POLL_H
3920         if (mask)
3921         {
3922             short poll_events = 0;
3923
3924             if (mask & ZOOM_SELECT_READ)
3925                 poll_events += POLLIN;
3926             if (mask & ZOOM_SELECT_WRITE)
3927                 poll_events += POLLOUT;
3928             if (mask & ZOOM_SELECT_EXCEPT)
3929                 poll_events += POLLERR;
3930             pollfds[nfds].fd = fd;
3931             pollfds[nfds].events = poll_events;
3932             pollfds[nfds].revents = 0;
3933             poll_cs[nfds] = c;
3934             nfds++;
3935         }
3936 #else
3937         if (mask & ZOOM_SELECT_READ)
3938         {
3939             FD_SET (fd, &input);
3940             nfds++;
3941         }
3942         if (mask & ZOOM_SELECT_WRITE)
3943         {
3944             FD_SET (fd, &output);
3945             nfds++;
3946         }
3947         if (mask & ZOOM_SELECT_EXCEPT)
3948         {
3949             FD_SET (fd, &except);
3950             nfds++;
3951         }
3952 #endif
3953     }
3954     if (!nfds)
3955         return 0;
3956
3957 #if HAVE_SYS_POLL_H
3958     r = poll (pollfds, nfds, (timeout == -1 ? -1 : timeout * 1000));
3959     for (i = 0; i<nfds; i++)
3960     {
3961         ZOOM_connection c = poll_cs[i];
3962         if (r && c->mask)
3963         {
3964             int mask = 0;
3965             if (pollfds[i].revents & POLLIN)
3966                 mask += ZOOM_SELECT_READ;
3967             if (pollfds[i].revents & POLLOUT)
3968                 mask += ZOOM_SELECT_WRITE;
3969             if (pollfds[i].revents & POLLERR)
3970                 mask += ZOOM_SELECT_EXCEPT;
3971             if (mask)
3972                 ZOOM_connection_do_io(c, mask);
3973         }
3974         else if (r == 0 && c->mask)
3975         {
3976             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
3977             /* timeout and this connection was waiting */
3978             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
3979             do_close (c);
3980             ZOOM_connection_put_event(c, event);
3981         }
3982     }
3983 #else
3984     tv.tv_sec = timeout;
3985     tv.tv_usec = 0;
3986     r = select (max_fd+1, &input, &output, &except, (timeout == -1 ? 0 : &tv));
3987     for (i = 0; i<no; i++)
3988     {
3989         ZOOM_connection c = cs[i];
3990         int fd, mask;
3991
3992         if (!c)
3993             continue;
3994         fd = z3950_connection_socket(c);
3995         mask = 0;
3996         if (r && c->mask)
3997         {
3998             /* no timeout and real socket */
3999             if (FD_ISSET(fd, &input))
4000                 mask += ZOOM_SELECT_READ;
4001             if (FD_ISSET(fd, &output))
4002                 mask += ZOOM_SELECT_WRITE;
4003             if (FD_ISSET(fd, &except))
4004                 mask += ZOOM_SELECT_EXCEPT;
4005             if (mask)
4006                 ZOOM_connection_do_io(c, mask);
4007         }
4008         if (r == 0 && c->mask)
4009         {
4010             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
4011             /* timeout and this connection was waiting */
4012             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
4013             do_close (c);
4014             ZOOM_connection_put_event(c, event);
4015         }
4016     }
4017 #endif
4018     for (i = 0; i<no; i++)
4019     {
4020         ZOOM_connection c = cs[i];
4021         ZOOM_Event event;
4022         if (c && (event = ZOOM_connection_get_event(c)))
4023         {
4024             ZOOM_Event_destroy (event);
4025             return i+1;
4026         }
4027     }
4028     return 0;
4029 }
4030
4031
4032 /*
4033  * Returns an xmalloc()d string containing RPN that corresponds to the
4034  * CQL passed in.  On error, sets the Connection object's error state
4035  * and returns a null pointer.
4036  * ### We could cache CQL parser and/or transformer in Connection.
4037  */
4038 static char *cql2pqf(ZOOM_connection c, const char *cql)
4039 {
4040     CQL_parser parser;
4041     int error;
4042     struct cql_node *node;
4043     const char *cqlfile;
4044     static cql_transform_t trans;
4045     char pqfbuf[512];
4046
4047     parser = cql_parser_create();
4048     if ((error = cql_parser_string(parser, cql)) != 0) {
4049         cql_parser_destroy(parser);
4050         set_ZOOM_error(c, ZOOM_ERROR_CQL_PARSE, cql);
4051         return 0;
4052     }
4053
4054     node = cql_parser_result(parser);
4055     /* ### Do not call cql_parser_destroy() yet: it destroys `node'! */
4056
4057     cqlfile = ZOOM_connection_option_get(c, "cqlfile");
4058     if (cqlfile == 0) {
4059         cql_parser_destroy(parser);
4060         cql_node_destroy(node);
4061         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, "no CQL transform file");
4062         return 0;
4063     }
4064
4065     if ((trans = cql_transform_open_fname(cqlfile)) == 0) {
4066         char buf[512];
4067         cql_parser_destroy(parser);
4068         cql_node_destroy(node);
4069         sprintf(buf, "can't open CQL transform file '%.200s': %.200s",
4070                 cqlfile, strerror(errno));
4071         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4072         return 0;
4073     }
4074
4075     error = cql_transform_buf(trans, node, pqfbuf, sizeof pqfbuf);
4076     cql_parser_destroy(parser);
4077     cql_node_destroy(node);
4078     if (error != 0) {
4079         char buf[512];
4080         const char *addinfo;
4081         error = cql_transform_error(trans, &addinfo);
4082         cql_transform_close(trans);
4083         sprintf(buf, "%.200s (addinfo=%.200s)", cql_strerror(error), addinfo);
4084         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4085         return 0;
4086     }
4087
4088     cql_transform_close(trans);
4089     return xstrdup(pqfbuf);
4090 }
4091
4092
4093 /*
4094  * Local variables:
4095  * c-basic-offset: 4
4096  * indent-tabs-mode: nil
4097  * End:
4098  * vim: shiftwidth=4 tabstop=8 expandtab
4099  */
4100