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 1.61 2005-12-21 08:35:36 mike 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 ZOOM_API(int)
 534 ZOOM_query_sortby(ZOOM_query s, const char *criteria)
 535 {
 536     s->sort_spec = yaz_sort_spec (s->odr, criteria);
 537     if (!s->sort_spec)
 538     {
 539         yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s failed",
 540                 s, criteria);
 541         return -1;
 542     }
 543     yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s", s, criteria);
 544     return 0;
 545 }
 546
 547 static zoom_ret do_write(ZOOM_connection c);
 548
 549 ZOOM_API(void)
 550 ZOOM_connection_destroy(ZOOM_connection c)
 551 {
 552     ZOOM_resultset r;
 553     if (!c)
 554         return;
 555     yaz_log(log_api, "%p ZOOM_connection_destroy", c);
 556     if (c->cs)
 557         cs_close (c->cs);
 558     for (r = c->resultsets; r; r = r->next)
 559         r->connection = 0;
 560
 561     xfree (c->buf_in);
 562     xfree (c->addinfo);
 563     xfree (c->diagset);
 564     odr_destroy (c->odr_in);
 565     odr_destroy (c->odr_out);
 566     ZOOM_options_destroy (c->options);
 567     ZOOM_connection_remove_tasks (c);
 568     xfree (c->host_port);
 569     xfree (c->path);
 570     xfree (c->proxy);
 571     xfree (c->charset);
 572     xfree (c->lang);
 573     xfree (c->cookie_out);
 574     xfree (c->cookie_in);
 575     xfree (c->client_IP);
 576     xfree (c);
 577 }
 578
 579 void ZOOM_resultset_addref (ZOOM_resultset r)
 580 {
 581     if (r)
 582     {
 583         (r->refcount)++;
 584         yaz_log(log_details, "%p ZOOM_resultset_addref count=%d",
 585                 r, r->refcount);
 586     }
 587 }
 588
 589 ZOOM_resultset ZOOM_resultset_create ()
 590 {
 591     ZOOM_resultset r = (ZOOM_resultset) xmalloc (sizeof(*r));
 592
 593     initlog();
 594
 595     yaz_log(log_details, "%p ZOOM_resultset_create", r);
 596     r->refcount = 1;
 597     r->size = 0;
 598     r->odr = odr_createmem (ODR_ENCODE);
 599     r->start = 0;
 600     r->piggyback = 1;
 601     r->setname = 0;
 602     r->schema = 0;
 603     r->count = 0;
 604     r->step = 0;
 605     r->record_cache = 0;
 606     r->r_sort_spec = 0;
 607     r->query = 0;
 608     r->connection = 0;
 609     r->next = 0;
 610     return r;
 611 }
 612
 613 ZOOM_API(ZOOM_resultset)
 614 ZOOM_connection_search_pqf(ZOOM_connection c, const char *q)
 615 {
 616     ZOOM_resultset r;
 617     ZOOM_query s = ZOOM_query_create();
 618
 619     ZOOM_query_prefix (s, q);
 620
 621     r = ZOOM_connection_search (c, s);
 622     ZOOM_query_destroy (s);
 623     return r;
 624 }
 625
 626 ZOOM_API(ZOOM_resultset)
 627 ZOOM_connection_search(ZOOM_connection c, ZOOM_query q)
 628 {
 629     ZOOM_resultset r = ZOOM_resultset_create ();
 630     ZOOM_task task;
 631     const char *cp;
 632
 633     yaz_log(log_api, "%p ZOOM_connection_search set %p query %p", c, r, q);
 634     r->r_sort_spec = q->sort_spec;
 635     r->query = q;
 636
 637     r->options = ZOOM_options_create_with_parent(c->options);
 638
 639     r->start = ZOOM_options_get_int(r->options, "start", 0);
 640     r->count = ZOOM_options_get_int(r->options, "count", 0);
 641     {
 642         /* If "presentChunk" is defined use that; otherwise "step" */
 643         const char *cp = ZOOM_options_get (r->options, "presentChunk");
 644         r->step = ZOOM_options_get_int(r->options,
 645                                        (cp != 0 ? "presentChunk": "step"), 0);
 646     }
 647     r->piggyback = ZOOM_options_get_bool (r->options, "piggyback", 1);
 648     cp = ZOOM_options_get (r->options, "setname");
 649     if (cp)
 650         r->setname = xstrdup(cp);
 651     cp = ZOOM_options_get (r->options, "schema");
 652     if (cp)
 653         r->schema = xstrdup(cp);
 654
 655     r->connection = c;
 656
 657     r->next = c->resultsets;
 658     c->resultsets = r;
 659
 660     if (c->host_port && c->proto == PROTO_HTTP)
 661     {
 662         if (!c->cs)
 663         {
 664             yaz_log(log_details, "ZOOM_connection_search: no comstack");
 665             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 666         }
 667         else
 668         {
 669             yaz_log(log_details, "ZOOM_connection_search: reconnect");
 670             c->reconnect_ok = 1;
 671         }
 672     }
 673
 674     task = ZOOM_connection_add_task (c, ZOOM_TASK_SEARCH);
 675     task->u.search.resultset = r;
 676     ZOOM_resultset_addref (r);
 677
 678     (q->refcount)++;
 679
 680     if (!c->async)
 681     {
 682         while (ZOOM_event (1, &c))
 683             ;
 684     }
 685     return r;
 686 }
 687
 688 /*
 689  * This is the old result-set sorting API, which is maintained only
 690  * for the sake of binary compatibility.  There is no reason ever to
 691  * use this rather than ZOOM_resultset_sort1().
 692  */
 693 ZOOM_API(void)
 694 ZOOM_resultset_sort(ZOOM_resultset r,
 695                     const char *sort_type, const char *sort_spec)
 696 {
 697     (void) ZOOM_resultset_sort1(r, sort_type, sort_spec);
 698 }
 699
 700 ZOOM_API(int)
 701 ZOOM_resultset_sort1(ZOOM_resultset r,
 702                      const char *sort_type, const char *sort_spec)
 703 {
 704     ZOOM_connection c = r->connection;
 705     ZOOM_task task;
 706     ZOOM_query newq;
 707
 708     newq = ZOOM_query_create();
 709     if (ZOOM_query_sortby(newq, sort_spec) < 0)
 710         return -1;
 711
 712     yaz_log(log_api, "%p ZOOM_resultset_sort r=%p sort_type=%s sort_spec=%s",
 713             r, r, sort_type, sort_spec);
 714     if (!c)
 715         return 0;
 716
 717     if (c->host_port && c->proto == PROTO_HTTP)
 718     {
 719         if (!c->cs)
 720         {
 721             yaz_log(log_details, "%p ZOOM_resultset_sort: no comstack", r);
 722             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 723         }
 724         else
 725         {
 726             yaz_log(log_details, "%p ZOOM_resultset_sort: prepare reconnect",
 727                     r);
 728             c->reconnect_ok = 1;
 729         }
 730     }
 731
 732     ZOOM_resultset_cache_reset(r);
 733     task = ZOOM_connection_add_task (c, ZOOM_TASK_SORT);
 734     task->u.sort.resultset = r;
 735     task->u.sort.q = newq;
 736
 737     ZOOM_resultset_addref (r);
 738
 739     if (!c->async)
 740     {
 741         while (ZOOM_event (1, &c))
 742             ;
 743     }
 744
 745     return 0;
 746 }
 747
 748 ZOOM_API(void)
 749     ZOOM_resultset_cache_reset(ZOOM_resultset r)
 750 {
 751     ZOOM_record_cache rc;
 752
 753     for (rc = r->record_cache; rc; rc = rc->next)
 754     {
 755         if (rc->rec.wrbuf_marc)
 756             wrbuf_free (rc->rec.wrbuf_marc, 1);
 757         if (rc->rec.wrbuf_iconv)
 758             wrbuf_free (rc->rec.wrbuf_iconv, 1);
 759         if (rc->rec.wrbuf_opac)
 760             wrbuf_free (rc->rec.wrbuf_opac, 1);
 761     }
 762     r->record_cache = 0;
 763 }
 764
 765 ZOOM_API(void)
 766 ZOOM_resultset_destroy(ZOOM_resultset r)
 767 {
 768     if (!r)
 769         return;
 770     (r->refcount)--;
 771     yaz_log(log_details, "%p ZOOM_resultset_destroy r=%p count=%d",
 772             r, r, r->refcount);
 773     if (r->refcount == 0)
 774     {
 775         ZOOM_resultset_cache_reset(r);
 776
 777         if (r->connection)
 778         {
 779             /* remove ourselves from the resultsets in connection */
 780             ZOOM_resultset *rp = &r->connection->resultsets;
 781             while (1)
 782             {
 783                 assert (*rp);   /* we must be in this list!! */
 784                 if (*rp == r)
 785                 {   /* OK, we're here - take us out of it */
 786                     *rp = (*rp)->next;
 787                     break;
 788                 }
 789                 rp = &(*rp)->next;
 790             }
 791         }
 792         ZOOM_query_destroy (r->query);
 793         ZOOM_options_destroy (r->options);
 794         odr_destroy (r->odr);
 795         xfree (r->setname);
 796         xfree (r->schema);
 797         xfree (r);
 798     }
 799 }
 800
 801 ZOOM_API(size_t)
 802 ZOOM_resultset_size (ZOOM_resultset r)
 803 {
 804     return r->size;
 805 }
 806
 807 static void do_close (ZOOM_connection c)
 808 {
 809     if (c->cs)
 810         cs_close(c->cs);
 811     c->cs = 0;
 812     c->mask = 0;
 813     c->state = STATE_IDLE;
 814 }
 815
 816 static void ZOOM_resultset_retrieve (ZOOM_resultset r,
 817                                      int force_sync, int start, int count)
 818 {
 819     ZOOM_task task;
 820     ZOOM_connection c;
 821     const char *cp;
 822
 823     if (!r)
 824         return;
 825     yaz_log(log_details, "%p ZOOM_resultset_retrieve force_sync=%d start=%d"
 826             " count=%d", r, force_sync, start, count);
 827     c = r->connection;
 828     if (!c)
 829         return;
 830
 831     if (c->host_port && c->proto == PROTO_HTTP)
 832     {
 833         if (!c->cs)
 834         {
 835             yaz_log(log_details, "%p ZOOM_resultset_retrieve: no comstack", r);
 836             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 837         }
 838         else
 839         {
 840             yaz_log(log_details, "%p ZOOM_resultset_retrieve: prepare "
 841                     "reconnect", r);
 842             c->reconnect_ok = 1;
 843         }
 844     }
 845     task = ZOOM_connection_add_task (c, ZOOM_TASK_RETRIEVE);
 846     task->u.retrieve.resultset = r;
 847     task->u.retrieve.start = start;
 848     task->u.retrieve.count = count;
 849
 850     cp = ZOOM_options_get (r->options, "schema");
 851     if (cp)
 852     {
 853         if (!r->schema || strcmp(r->schema, cp))
 854         {
 855             xfree(r->schema);
 856             r->schema = xstrdup(cp);
 857         }
 858     }
 859
 860     ZOOM_resultset_addref (r);
 861
 862     if (!r->connection->async || force_sync)
 863         while (r->connection && ZOOM_event (1, &r->connection))
 864             ;
 865 }
 866
 867 ZOOM_API(void)
 868 ZOOM_resultset_records (ZOOM_resultset r, ZOOM_record *recs,
 869                         size_t start, size_t count)
 870 {
 871     int force_present = 0;
 872
 873     if (!r)
 874         return ;
 875     yaz_log(log_api, "%p ZOOM_resultset_records r=%p start=%d count=%d",
 876             r, r, start, count);
 877     if (count && recs)
 878         force_present = 1;
 879     ZOOM_resultset_retrieve (r, force_present, start, count);
 880     if (force_present)
 881     {
 882         size_t i;
 883         for (i = 0; i< count; i++)
 884             recs[i] = ZOOM_resultset_record_immediate (r, i+start);
 885     }
 886 }
 887
 888 static void get_cert(ZOOM_connection c)
 889 {
 890     char *cert_buf;
 891     int cert_len;
 892
 893     if (cs_get_peer_certificate_x509(c->cs, &cert_buf, &cert_len))
 894     {
 895         ZOOM_connection_option_setl(c, "sslPeerCert",
 896                                     cert_buf, cert_len);
 897         xfree(cert_buf);
 898     }
 899 }
 900
 901 static zoom_ret do_connect (ZOOM_connection c)
 902 {
 903     void *add;
 904     const char *effective_host;
 905
 906     if (c->proxy)
 907         effective_host = c->proxy;
 908     else
 909         effective_host = c->host_port;
 910
 911     yaz_log(log_details, "%p do_connect effective_host=%s", c, effective_host);
 912
 913     if (c->cs)
 914         cs_close(c->cs);
 915     c->cs = cs_create_host (effective_host, 0, &add);
 916
 917     if (c->cs && c->cs->protocol == PROTO_HTTP)
 918     {
 919 #if HAVE_XML2
 920         const char *path = 0;
 921
 922         c->proto = PROTO_HTTP;
 923         cs_get_host_args(c->host_port, &path);
 924         xfree(c->path);
 925         c->path = (char*) xmalloc(strlen(path)+2);
 926         c->path[0] = '/';
 927         strcpy (c->path+1, path);
 928 #else
 929         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_PROTOCOL, "SRW");
 930         do_close(c);
 931         return zoom_complete;
 932 #endif
 933     }
 934     if (c->cs)
 935     {
 936         int ret = cs_connect (c->cs, add);
 937         if (ret == 0)
 938         {
 939             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
 940             ZOOM_connection_put_event(c, event);
 941             get_cert(c);
 942             if (c->proto == PROTO_Z3950)
 943                 ZOOM_connection_send_init(c);
 944             else
 945             {
 946                 /* no init request for SRW .. */
 947                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
 948                 ZOOM_connection_remove_task (c);
 949                 c->mask = 0;
 950                 ZOOM_connection_exec_task (c);
 951             }
 952             c->state = STATE_ESTABLISHED;
 953             return zoom_pending;
 954         }
 955         else if (ret > 0)
 956         {
 957             c->state = STATE_CONNECTING;
 958             c->mask = ZOOM_SELECT_EXCEPT;
 959             if (c->cs->io_pending & CS_WANT_WRITE)
 960                 c->mask += ZOOM_SELECT_WRITE;
 961             if (c->cs->io_pending & CS_WANT_READ)
 962                 c->mask += ZOOM_SELECT_READ;
 963             return zoom_pending;
 964         }
 965     }
 966     c->state = STATE_IDLE;
 967     set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
 968     return zoom_complete;
 969 }
 970
 971 int z3950_connection_socket(ZOOM_connection c)
 972 {
 973     if (c->cs)
 974         return cs_fileno(c->cs);
 975     return -1;
 976 }
 977
 978 int z3950_connection_mask(ZOOM_connection c)
 979 {
 980     if (c->cs)
 981         return c->mask;
 982     return 0;
 983 }
 984
 985 static void otherInfo_attach (ZOOM_connection c, Z_APDU *a, ODR out)
 986 {
 987     int i;
 988     for (i = 0; i<200; i++)
 989     {
 990         size_t len;
 991         Z_OtherInformation **oi;
 992         char buf[80];
 993         const char *val;
 994         const char *cp;
 995         int oidval;
 996
 997         sprintf (buf, "otherInfo%d", i);
 998         val = ZOOM_options_get (c->options, buf);
 999         if (!val)
1000             break;
1001         cp = strchr(val, ':');
1002         if (!cp)
1003             continue;
1004         len = cp - val;
1005         if (len >= sizeof(buf))
1006             len = sizeof(buf)-1;
1007         memcpy (buf, val, len);
1008         buf[len] = '\0';
1009         oidval = oid_getvalbyname (buf);
1010         if (oidval == VAL_NONE)
1011             continue;
1012
1013         yaz_oi_APDU(a, &oi);
1014         yaz_oi_set_string_oidval(oi, out, oidval, 1, cp+1);
1015     }
1016 }
1017
1018 static int encode_APDU(ZOOM_connection c, Z_APDU *a, ODR out)
1019 {
1020     assert (a);
1021     if (c->cookie_out)
1022     {
1023         Z_OtherInformation **oi;
1024         yaz_oi_APDU(a, &oi);
1025         yaz_oi_set_string_oidval(oi, out, VAL_COOKIE, 1, c->cookie_out);
1026     }
1027     if (c->client_IP)
1028     {
1029         Z_OtherInformation **oi;
1030         yaz_oi_APDU(a, &oi);
1031         yaz_oi_set_string_oidval(oi, out, VAL_CLIENT_IP, 1, c->client_IP);
1032     }
1033     otherInfo_attach (c, a, out);
1034     if (!z_APDU(out, &a, 0, 0))
1035     {
1036         FILE *outf = fopen("/tmp/apdu.txt", "a");
1037         if (a && outf)
1038         {
1039             ODR odr_pr = odr_createmem(ODR_PRINT);
1040             fprintf (outf, "a=%p\n", a);
1041             odr_setprint(odr_pr, outf);
1042             z_APDU(odr_pr, &a, 0, 0);
1043             odr_destroy(odr_pr);
1044         }
1045         yaz_log(log_api, "%p encoding_APDU: encoding failed", c);
1046         set_ZOOM_error(c, ZOOM_ERROR_ENCODE, 0);
1047         odr_reset(out);
1048         return -1;
1049     }
1050     yaz_log(log_details, "%p encoding_APDU encoding OK", c);
1051     return 0;
1052 }
1053
1054 static zoom_ret send_APDU (ZOOM_connection c, Z_APDU *a)
1055 {
1056     ZOOM_Event event;
1057     assert (a);
1058     if (encode_APDU(c, a, c->odr_out))
1059         return zoom_complete;
1060     yaz_log(log_details, "%p send APDU type=%d", c, a->which);
1061     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1062     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
1063     ZOOM_connection_put_event (c, event);
1064     odr_reset(c->odr_out);
1065     return do_write (c);
1066 }
1067
1068 /* returns 1 if PDU was sent OK (still pending )
1069            0 if PDU was not sent OK (nothing to wait for)
1070 */
1071
1072 static zoom_ret ZOOM_connection_send_init (ZOOM_connection c)
1073 {
1074     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_initRequest);
1075     Z_InitRequest *ireq = apdu->u.initRequest;
1076     Z_IdAuthentication *auth = (Z_IdAuthentication *)
1077         odr_malloc(c->odr_out, sizeof(*auth));
1078     const char *auth_groupId = ZOOM_options_get (c->options, "group");
1079     const char *auth_userId = ZOOM_options_get (c->options, "user");
1080     const char *auth_password = ZOOM_options_get (c->options, "password");
1081     char *version;
1082
1083     /* support the pass for backwards compatibility */
1084     if (!auth_password)
1085         auth_password = ZOOM_options_get (c->options, "pass");
1086
1087     ODR_MASK_SET(ireq->options, Z_Options_search);
1088     ODR_MASK_SET(ireq->options, Z_Options_present);
1089     ODR_MASK_SET(ireq->options, Z_Options_scan);
1090     ODR_MASK_SET(ireq->options, Z_Options_sort);
1091     ODR_MASK_SET(ireq->options, Z_Options_extendedServices);
1092     ODR_MASK_SET(ireq->options, Z_Options_namedResultSets);
1093
1094     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_1);
1095     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_2);
1096     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_3);
1097
1098     /* Index Data's Z39.50 Implementor Id is 81 */
1099     ireq->implementationId = odr_prepend(c->odr_out,
1100         ZOOM_options_get(c->options, "implementationId"),
1101         odr_prepend(c->odr_out, "81", ireq->implementationId));
1102
1103     ireq->implementationName = odr_prepend(c->odr_out,
1104         ZOOM_options_get(c->options, "implementationName"),
1105         odr_prepend(c->odr_out, "ZOOM-C", ireq->implementationName));
1106
1107     version = odr_strdup(c->odr_out, "$Revision: 1.61 $");
1108     if (strlen(version) > 10)   /* check for unexpanded CVS strings */
1109         version[strlen(version)-2] = '\0';
1110     ireq->implementationVersion = odr_prepend(c->odr_out,
1111         ZOOM_options_get(c->options, "implementationVersion"),
1112         odr_prepend(c->odr_out, &version[11], ireq->implementationVersion));
1113
1114     *ireq->maximumRecordSize =
1115         ZOOM_options_get_int (c->options, "maximumRecordSize", 1024*1024);
1116     *ireq->preferredMessageSize =
1117         ZOOM_options_get_int (c->options, "preferredMessageSize", 1024*1024);
1118
1119     if (auth_groupId || auth_password)
1120     {
1121         Z_IdPass *pass = (Z_IdPass *) odr_malloc(c->odr_out, sizeof(*pass));
1122         int i = 0;
1123         pass->groupId = 0;
1124         if (auth_groupId && *auth_groupId)
1125         {
1126             pass->groupId = (char *)
1127                 odr_malloc(c->odr_out, strlen(auth_groupId)+1);
1128             strcpy(pass->groupId, auth_groupId);
1129             i++;
1130         }
1131         pass->userId = 0;
1132         if (auth_userId && *auth_userId)
1133         {
1134             pass->userId = (char *)
1135                 odr_malloc(c->odr_out, strlen(auth_userId)+1);
1136             strcpy(pass->userId, auth_userId);
1137             i++;
1138         }
1139         pass->password = 0;
1140         if (auth_password && *auth_password)
1141         {
1142             pass->password = (char *)
1143                 odr_malloc(c->odr_out, strlen(auth_password)+1);
1144             strcpy(pass->password, auth_password);
1145             i++;
1146         }
1147         if (i)
1148         {
1149             auth->which = Z_IdAuthentication_idPass;
1150             auth->u.idPass = pass;
1151             ireq->idAuthentication = auth;
1152         }
1153     }
1154     else if (auth_userId)
1155     {
1156         auth->which = Z_IdAuthentication_open;
1157         auth->u.open = (char *)
1158             odr_malloc(c->odr_out, strlen(auth_userId)+1);
1159         strcpy(auth->u.open, auth_userId);
1160         ireq->idAuthentication = auth;
1161     }
1162     if (c->proxy)
1163         yaz_oi_set_string_oidval(&ireq->otherInfo, c->odr_out,
1164                                  VAL_PROXY, 1, c->host_port);
1165     if (c->charset || c->lang)
1166     {
1167         Z_OtherInformation **oi;
1168         Z_OtherInformationUnit *oi_unit;
1169
1170         yaz_oi_APDU(apdu, &oi);
1171
1172         if ((oi_unit = yaz_oi_update(oi, c->odr_out, NULL, 0, 0)))
1173         {
1174             char **charsets_addresses = 0;
1175             char **langs_addresses = 0;
1176             int charsets_count = 0;
1177             int langs_count = 0;
1178
1179             if (c->charset)
1180                 nmem_strsplit_blank(c->odr_out->mem, c->charset,
1181                                     &charsets_addresses, &charsets_count);
1182             if (c->lang)
1183                 nmem_strsplit_blank(c->odr_out->mem, c->lang,
1184                                     &langs_addresses, &langs_count);
1185             ODR_MASK_SET(ireq->options, Z_Options_negotiationModel);
1186             oi_unit->which = Z_OtherInfo_externallyDefinedInfo;
1187             oi_unit->information.externallyDefinedInfo =
1188                 yaz_set_proposal_charneg(c->odr_out,
1189                                          (const char **) charsets_addresses,
1190                                          charsets_count,
1191                                          (const char **) langs_addresses,
1192                                          langs_count,
1193                                          1);
1194         }
1195     }
1196     assert (apdu);
1197     return send_APDU (c, apdu);
1198 }
1199
1200 #if HAVE_XML2
1201 static zoom_ret send_srw (ZOOM_connection c, Z_SRW_PDU *sr)
1202 {
1203     char ctype[50];
1204     Z_SOAP_Handler h[2] = {
1205         {"http://www.loc.gov/zing/srw/", 0, (Z_SOAP_fun) yaz_srw_codec},
1206         {0, 0, 0}
1207     };
1208     ODR o = odr_createmem(ODR_ENCODE);
1209     int ret;
1210     Z_SOAP *p = (Z_SOAP*) odr_malloc(o, sizeof(*p));
1211     Z_GDU *gdu;
1212     ZOOM_Event event;
1213
1214     gdu = z_get_HTTP_Request(c->odr_out);
1215     gdu->u.HTTP_Request->path = c->path;
1216
1217     if (c->host_port)
1218     {
1219         const char *cp0 = strstr(c->host_port, "://");
1220         const char *cp1 = 0;
1221         if (cp0)
1222             cp0 = cp0+3;
1223         else
1224             cp0 = c->host_port;
1225
1226         cp1 = strchr(cp0, '/');
1227         if (!cp1)
1228             cp1 = cp0+strlen(cp0);
1229
1230         if (cp0 && cp1)
1231         {
1232             char *h = (char*) odr_malloc(c->odr_out, cp1 - cp0 + 1);
1233             memcpy (h, cp0, cp1 - cp0);
1234             h[cp1-cp0] = '\0';
1235             z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1236                               "Host", h);
1237         }
1238     }
1239
1240     strcpy(ctype, "text/xml");
1241     if (c->charset && strlen(c->charset) < 20)
1242     {
1243         strcat(ctype, "; charset=");
1244         strcat(ctype, c->charset);
1245     }
1246     z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1247                       "Content-Type", ctype);
1248     z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1249                       "SOAPAction", "\"\"");
1250     p->which = Z_SOAP_generic;
1251     p->u.generic = (Z_SOAP_Generic *) odr_malloc(o, sizeof(*p->u.generic));
1252     p->u.generic->no = 0;
1253     p->u.generic->ns = 0;
1254     p->u.generic->p = sr;
1255     p->ns = "http://schemas.xmlsoap.org/soap/envelope/";
1256
1257     ret = z_soap_codec_enc(o, &p,
1258                            &gdu->u.HTTP_Request->content_buf,
1259                            &gdu->u.HTTP_Request->content_len, h,
1260                            c->charset);
1261
1262     if (!z_GDU(c->odr_out, &gdu, 0, 0))
1263         return zoom_complete;
1264     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1265
1266     odr_destroy(o);
1267
1268     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
1269     ZOOM_connection_put_event (c, event);
1270     odr_reset(c->odr_out);
1271     return do_write (c);
1272 }
1273 #endif
1274
1275 #if HAVE_XML2
1276 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1277 {
1278     int i;
1279     ZOOM_resultset resultset = 0;
1280     Z_SRW_PDU *sr = 0;
1281     const char *recordPacking = 0;
1282
1283     if (c->error)                  /* don't continue on error */
1284         return zoom_complete;
1285     assert (c->tasks);
1286     if (c->tasks->which == ZOOM_TASK_SEARCH)
1287     {
1288         resultset = c->tasks->u.search.resultset;
1289         resultset->setname = xstrdup ("default");
1290         ZOOM_options_set (resultset->options, "setname", resultset->setname);
1291     }
1292     else if(c->tasks->which == ZOOM_TASK_RETRIEVE)
1293     {
1294         resultset = c->tasks->u.retrieve.resultset;
1295
1296         resultset->start = c->tasks->u.retrieve.start;
1297         resultset->count = c->tasks->u.retrieve.count;
1298
1299         if (resultset->start >= resultset->size)
1300             return zoom_complete;
1301         if (resultset->start + resultset->count > resultset->size)
1302             resultset->count = resultset->size - resultset->start;
1303
1304         for (i = 0; i<resultset->count; i++)
1305         {
1306             ZOOM_record rec =
1307                 record_cache_lookup (resultset, i + resultset->start);
1308             if (!rec)
1309                 break;
1310         }
1311         if (i == resultset->count)
1312             return zoom_complete;
1313     }
1314     assert(resultset->query);
1315
1316     sr = yaz_srw_get(c->odr_out, Z_SRW_searchRetrieve_request);
1317
1318     if (resultset->query->z_query->which == Z_Query_type_104
1319         && resultset->query->z_query->u.type_104->which == Z_External_CQL)
1320     {
1321
1322         sr->u.request->query_type = Z_SRW_query_type_cql;
1323         sr->u.request->query.cql =resultset->query->z_query->u.type_104->u.cql;
1324     }
1325     else if (resultset->query->z_query->which == Z_Query_type_1 &&
1326              resultset->query->z_query->u.type_1)
1327     {
1328         sr->u.request->query_type = Z_SRW_query_type_pqf;
1329         sr->u.request->query.pqf = resultset->query->query_string;
1330     }
1331     else
1332     {
1333         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
1334         return zoom_complete;
1335     }
1336     sr->u.request->startRecord = odr_intdup (c->odr_out, resultset->start + 1);
1337     sr->u.request->maximumRecords = odr_intdup (
1338         c->odr_out, resultset->step>0 ? resultset->step : resultset->count);
1339     sr->u.request->recordSchema = resultset->schema;
1340
1341     recordPacking = ZOOM_resultset_option_get (resultset, "recordPacking");
1342
1343     if (recordPacking)
1344         sr->u.request->recordPacking = odr_strdup(c->odr_out, recordPacking);
1345
1346     return send_srw(c, sr);
1347 }
1348 #else
1349 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1350 {
1351     return zoom_complete;
1352 }
1353 #endif
1354
1355 static zoom_ret ZOOM_connection_send_search (ZOOM_connection c)
1356 {
1357     ZOOM_resultset r;
1358     int lslb, ssub, mspn;
1359     const char *syntax;
1360     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_searchRequest);
1361     Z_SearchRequest *search_req = apdu->u.searchRequest;
1362     const char *elementSetName;
1363     const char *smallSetElementSetName;
1364     const char *mediumSetElementSetName;
1365
1366     assert (c->tasks);
1367     assert (c->tasks->which == ZOOM_TASK_SEARCH);
1368
1369     r = c->tasks->u.search.resultset;
1370
1371     yaz_log(log_details, "%p ZOOM_connection_send_search set=%p", c, r);
1372
1373     elementSetName =
1374         ZOOM_options_get (r->options, "elementSetName");
1375     smallSetElementSetName  =
1376         ZOOM_options_get (r->options, "smallSetElementSetName");
1377     mediumSetElementSetName =
1378         ZOOM_options_get (r->options, "mediumSetElementSetName");
1379
1380     if (!smallSetElementSetName)
1381         smallSetElementSetName = elementSetName;
1382
1383     if (!mediumSetElementSetName)
1384         mediumSetElementSetName = elementSetName;
1385
1386     assert (r);
1387     assert (r->query);
1388
1389     /* prepare query for the search request */
1390     search_req->query = r->query->z_query;
1391     if (!search_req->query)
1392     {
1393         set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
1394         return zoom_complete;
1395     }
1396
1397     search_req->databaseNames =
1398         set_DatabaseNames (c, r->options, &search_req->num_databaseNames);
1399
1400     /* get syntax (no need to provide unless piggyback is in effect) */
1401     syntax = ZOOM_options_get (r->options, "preferredRecordSyntax");
1402
1403     lslb = ZOOM_options_get_int (r->options, "largeSetLowerBound", -1);
1404     ssub = ZOOM_options_get_int (r->options, "smallSetUpperBound", -1);
1405     mspn = ZOOM_options_get_int (r->options, "mediumSetPresentNumber", -1);
1406     if (lslb != -1 && ssub != -1 && mspn != -1)
1407     {
1408         /* So're a Z39.50 expert? Let's hope you don't do sort */
1409         *search_req->largeSetLowerBound = lslb;
1410         *search_req->smallSetUpperBound = ssub;
1411         *search_req->mediumSetPresentNumber = mspn;
1412     }
1413     else if (r->start == 0 && r->count > 0
1414              && r->piggyback && !r->r_sort_spec && !r->schema)
1415     {
1416         /* Regular piggyback - do it unless we're going to do sort */
1417         *search_req->largeSetLowerBound = 2000000000;
1418         *search_req->smallSetUpperBound = 1;
1419         *search_req->mediumSetPresentNumber = r->step>0 ? r->step : r->count;
1420     }
1421     else
1422     {
1423         /* non-piggyback. Need not provide elementsets or syntaxes .. */
1424         smallSetElementSetName = 0;
1425         mediumSetElementSetName = 0;
1426         syntax = 0;
1427     }
1428     if (smallSetElementSetName && *smallSetElementSetName)
1429     {
1430         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1431             odr_malloc (c->odr_out, sizeof(*esn));
1432
1433         esn->which = Z_ElementSetNames_generic;
1434         esn->u.generic = odr_strdup (c->odr_out, smallSetElementSetName);
1435         search_req->smallSetElementSetNames = esn;
1436     }
1437     if (mediumSetElementSetName && *mediumSetElementSetName)
1438     {
1439         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1440             odr_malloc (c->odr_out, sizeof(*esn));
1441
1442         esn->which = Z_ElementSetNames_generic;
1443         esn->u.generic = odr_strdup (c->odr_out, mediumSetElementSetName);
1444         search_req->mediumSetElementSetNames = esn;
1445     }
1446     if (syntax)
1447         search_req->preferredRecordSyntax =
1448             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
1449
1450     if (!r->setname)
1451     {
1452         if (c->support_named_resultsets)
1453         {
1454             char setname[14];
1455             int ord;
1456             /* find the lowest unused ordinal so that we re-use
1457                result sets on the server. */
1458             for (ord = 1; ; ord++)
1459             {
1460                 ZOOM_resultset rp;
1461                 sprintf (setname, "%d", ord);
1462                 for (rp = c->resultsets; rp; rp = rp->next)
1463                     if (rp->setname && !strcmp (rp->setname, setname))
1464                         break;
1465                 if (!rp)
1466                     break;
1467             }
1468             r->setname = xstrdup (setname);
1469             yaz_log(log_details, "%p ZOOM_connection_send_search: allocating "
1470                     "set %s", c, r->setname);
1471         }
1472         else
1473         {
1474             yaz_log(log_details, "%p ZOOM_connection_send_search: using "
1475                     "default set", c);
1476             r->setname = xstrdup ("default");
1477         }
1478         ZOOM_options_set (r->options, "setname", r->setname);
1479     }
1480     search_req->resultSetName = odr_strdup(c->odr_out, r->setname);
1481     return send_APDU (c, apdu);
1482 }
1483
1484 static void response_default_diag(ZOOM_connection c, Z_DefaultDiagFormat *r)
1485 {
1486     int oclass;
1487     char *addinfo = 0;
1488
1489     switch (r->which)
1490     {
1491     case Z_DefaultDiagFormat_v2Addinfo:
1492         addinfo = r->u.v2Addinfo;
1493         break;
1494     case Z_DefaultDiagFormat_v3Addinfo:
1495         addinfo = r->u.v3Addinfo;
1496         break;
1497     }
1498     xfree (c->addinfo);
1499     c->addinfo = 0;
1500     set_dset_error(c, *r->condition,
1501                    yaz_z3950oid_to_str(r->diagnosticSetId, &oclass),
1502                    addinfo, 0);
1503 }
1504
1505 static void response_diag(ZOOM_connection c, Z_DiagRec *p)
1506 {
1507     if (p->which != Z_DiagRec_defaultFormat)
1508         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1509     else
1510         response_default_diag(c, p->u.defaultFormat);
1511 }
1512
1513 ZOOM_API(ZOOM_record)
1514 ZOOM_record_clone (ZOOM_record srec)
1515 {
1516     char *buf;
1517     int size;
1518     ODR odr_enc;
1519     ZOOM_record nrec;
1520
1521     odr_enc = odr_createmem(ODR_ENCODE);
1522     if (!z_NamePlusRecord (odr_enc, &srec->npr, 0, 0))
1523         return 0;
1524     buf = odr_getbuf (odr_enc, &size, 0);
1525
1526     nrec = (ZOOM_record) xmalloc (sizeof(*nrec));
1527     nrec->odr = odr_createmem(ODR_DECODE);
1528     nrec->wrbuf_marc = 0;
1529     nrec->wrbuf_iconv = 0;
1530     nrec->wrbuf_opac = 0;
1531     odr_setbuf (nrec->odr, buf, size, 0);
1532     z_NamePlusRecord (nrec->odr, &nrec->npr, 0, 0);
1533
1534     odr_destroy (odr_enc);
1535     return nrec;
1536 }
1537
1538 ZOOM_API(ZOOM_record)
1539 ZOOM_resultset_record_immediate (ZOOM_resultset s,size_t pos)
1540 {
1541     return record_cache_lookup (s, pos);
1542 }
1543
1544 ZOOM_API(ZOOM_record)
1545 ZOOM_resultset_record (ZOOM_resultset r, size_t pos)
1546 {
1547     ZOOM_record rec = ZOOM_resultset_record_immediate(r, pos);
1548
1549     if (!rec)
1550     {
1551         ZOOM_resultset_retrieve (r, 1, pos, 1);
1552         rec = ZOOM_resultset_record_immediate (r, pos);
1553     }
1554     return rec;
1555 }
1556
1557 ZOOM_API(void)
1558 ZOOM_record_destroy (ZOOM_record rec)
1559 {
1560     if (!rec)
1561         return;
1562     if (rec->wrbuf_marc)
1563         wrbuf_free (rec->wrbuf_marc, 1);
1564     if (rec->wrbuf_iconv)
1565         wrbuf_free (rec->wrbuf_iconv, 1);
1566     if (rec->wrbuf_opac)
1567         wrbuf_free (rec->wrbuf_opac, 1);
1568     odr_destroy (rec->odr);
1569     xfree (rec);
1570 }
1571
1572 static const char *marc_iconv_return(ZOOM_record rec, int marc_type,
1573                                      int *len,
1574                                      const char *buf, int sz,
1575                                      const char *record_charset)
1576 {
1577     char to[40];
1578     char from[40];
1579     yaz_iconv_t cd = 0;
1580     yaz_marc_t mt = yaz_marc_create();
1581
1582     *from = '\0';
1583     strcpy(to, "UTF-8");
1584     if (record_charset && *record_charset)
1585     {
1586         /* Use "from,to" or just "from" */
1587         const char *cp = strchr(record_charset, ',');
1588         int clen = strlen(record_charset);
1589         if (cp && cp[1])
1590         {
1591             strncpy( to, cp+1, sizeof(to)-1);
1592             to[sizeof(to)-1] = '\0';
1593             clen = cp - record_charset;
1594         }
1595         if (clen > sizeof(from)-1)
1596             clen = sizeof(from)-1;
1597
1598         if (clen)
1599             strncpy(from, record_charset, clen);
1600         from[clen] = '\0';
1601     }
1602
1603     if (*from && *to)
1604     {
1605         cd = yaz_iconv_open(to, from);
1606         yaz_marc_iconv(mt, cd);
1607     }
1608
1609     yaz_marc_xml(mt, marc_type);
1610     if (!rec->wrbuf_marc)
1611         rec->wrbuf_marc = wrbuf_alloc();
1612     wrbuf_rewind (rec->wrbuf_marc);
1613     if (yaz_marc_decode_wrbuf (mt, buf, sz, rec->wrbuf_marc) > 0)
1614     {
1615         yaz_marc_destroy(mt);
1616         if (cd)
1617             yaz_iconv_close(cd);
1618         if (len)
1619             *len = wrbuf_len(rec->wrbuf_marc);
1620         return wrbuf_buf(rec->wrbuf_marc);
1621     }
1622     yaz_marc_destroy(mt);
1623     if (cd)
1624         yaz_iconv_close(cd);
1625     return 0;
1626 }
1627
1628 static const char *record_iconv_return(ZOOM_record rec, int *len,
1629                                        const char *buf, int sz,
1630                                        const char *record_charset)
1631 {
1632     char to[40];
1633     char from[40];
1634     yaz_iconv_t cd = 0;
1635
1636     *from = '\0';
1637     strcpy(to, "UTF-8");
1638     if (record_charset && *record_charset)
1639     {
1640         /* Use "from,to" or just "from" */
1641         const char *cp = strchr(record_charset, ',');
1642         int clen = strlen(record_charset);
1643         if (cp && cp[1])
1644         {
1645             strncpy( to, cp+1, sizeof(to)-1);
1646             to[sizeof(to)-1] = '\0';
1647             clen = cp - record_charset;
1648         }
1649         if (clen > sizeof(from)-1)
1650             clen = sizeof(from)-1;
1651
1652         if (clen)
1653             strncpy(from, record_charset, clen);
1654         from[clen] = '\0';
1655     }
1656
1657     if (*from && *to && (cd = yaz_iconv_open(to, from)))
1658     {
1659         char outbuf[12];
1660         size_t inbytesleft = sz;
1661         const char *inp = buf;
1662
1663         if (!rec->wrbuf_iconv)
1664             rec->wrbuf_iconv = wrbuf_alloc();
1665
1666         wrbuf_rewind(rec->wrbuf_iconv);
1667
1668         while (inbytesleft)
1669         {
1670             size_t outbytesleft = sizeof(outbuf);
1671             char *outp = outbuf;
1672             size_t r = yaz_iconv (cd, (char**) &inp,
1673                                   &inbytesleft,
1674                                   &outp, &outbytesleft);
1675             if (r == (size_t) (-1))
1676             {
1677                 int e = yaz_iconv_error(cd);
1678                 if (e != YAZ_ICONV_E2BIG)
1679                     break;
1680             }
1681             wrbuf_write(rec->wrbuf_iconv, outbuf, outp - outbuf);
1682         }
1683         wrbuf_puts(rec->wrbuf_iconv, "");
1684         buf = wrbuf_buf(rec->wrbuf_iconv);
1685         sz = wrbuf_len(rec->wrbuf_iconv);
1686         yaz_iconv_close(cd);
1687     }
1688     if (len)
1689         *len = sz;
1690     return buf;
1691 }
1692
1693 ZOOM_API(const char *)
1694 ZOOM_record_get (ZOOM_record rec, const char *type_spec, int *len)
1695 {
1696     char type[40];
1697     char charset[40];
1698     char xpath[512];
1699     const char *cp;
1700     int i;
1701     Z_NamePlusRecord *npr;
1702
1703     if (len)
1704         *len = 0; /* default return */
1705
1706     if (!rec)
1707         return 0;
1708     npr = rec->npr;
1709     if (!npr)
1710         return 0;
1711
1712     cp = type_spec;
1713     for (i = 0; cp[i] && i < sizeof(type)-1; i++)
1714     {
1715         if (cp[i] == ';' || cp[i] == ' ')
1716             break;
1717         type[i] = cp[i];
1718     }
1719     type[i] = '\0';
1720     charset[0] = '\0';
1721     while (type_spec[i] == ';')
1722     {
1723         i++;
1724         while (type_spec[i] == ' ')
1725             i++;
1726         if (!strncmp(type_spec+i, "charset=", 8))
1727         {
1728             int j = 0;
1729             i = i + 8; /* skip charset= */
1730             for (j = 0; type_spec[i]  && j < sizeof(charset)-1; i++, j++)
1731             {
1732                 if (type_spec[i] == ';' || type_spec[i] == ' ')
1733                     break;
1734                 charset[j] = cp[i];
1735             }
1736             charset[j] = '\0';
1737         }
1738         else if (!strncmp(type_spec+i, "xpath=", 6))
1739         {
1740             int j = 0;
1741             i = i + 6;
1742             for (j = 0; type_spec[i] && j < sizeof(xpath)-1; i++, j++)
1743                 xpath[j] = cp[i];
1744             xpath[j] = '\0';
1745         }
1746         while (type_spec[i] == ' ')
1747             i++;
1748     }
1749     if (!strcmp (type, "database"))
1750     {
1751         if (len)
1752             *len = (npr->databaseName ? strlen(npr->databaseName) : 0);
1753         return npr->databaseName;
1754     }
1755     else if (!strcmp (type, "syntax"))
1756     {
1757         const char *desc = 0;
1758         if (npr->which == Z_NamePlusRecord_databaseRecord)
1759         {
1760             Z_External *r = (Z_External *) npr->u.databaseRecord;
1761             oident *ent = oid_getentbyoid(r->direct_reference);
1762             if (ent)
1763                 desc = ent->desc;
1764         }
1765         if (!desc)
1766             desc = "none";
1767         if (len)
1768             *len = strlen(desc);
1769         return desc;
1770     }
1771     if (npr->which != Z_NamePlusRecord_databaseRecord)
1772         return 0;
1773
1774     /* from now on - we have a database record .. */
1775     if (!strcmp (type, "render"))
1776     {
1777         Z_External *r = (Z_External *) npr->u.databaseRecord;
1778         oident *ent = oid_getentbyoid(r->direct_reference);
1779
1780         /* render bibliographic record .. */
1781         if (r->which == Z_External_OPAC)
1782         {
1783             r = r->u.opac->bibliographicRecord;
1784             if (!r)
1785                 return 0;
1786             ent = oid_getentbyoid(r->direct_reference);
1787         }
1788         if (r->which == Z_External_sutrs)
1789             return record_iconv_return(rec, len,
1790                                        (char*) r->u.sutrs->buf,
1791                                        r->u.sutrs->len,
1792                                        charset);
1793         else if (r->which == Z_External_octet)
1794         {
1795             const char *ret_buf;
1796             switch (ent->value)
1797             {
1798             case VAL_SOIF:
1799             case VAL_HTML:
1800             case VAL_SUTRS:
1801                 break;
1802             case VAL_TEXT_XML:
1803             case VAL_APPLICATION_XML:
1804                 break;
1805             default:
1806                 ret_buf = marc_iconv_return(
1807                     rec, YAZ_MARC_LINE, len,
1808                     (const char *) r->u.octet_aligned->buf,
1809                     r->u.octet_aligned->len,
1810                     charset);
1811                 if (ret_buf)
1812                     return ret_buf;
1813             }
1814             return record_iconv_return(rec, len,
1815                                        (const char *) r->u.octet_aligned->buf,
1816                                        r->u.octet_aligned->len,
1817                                        charset);
1818         }
1819         else if (r->which == Z_External_grs1)
1820         {
1821             if (!rec->wrbuf_marc)
1822                 rec->wrbuf_marc = wrbuf_alloc();
1823             wrbuf_rewind (rec->wrbuf_marc);
1824             yaz_display_grs1(rec->wrbuf_marc, r->u.grs1, 0);
1825             return record_iconv_return(rec, len,
1826                                        wrbuf_buf(rec->wrbuf_marc),
1827                                        wrbuf_len(rec->wrbuf_marc),
1828                                        charset);
1829         }
1830         return 0;
1831     }
1832     else if (!strcmp (type, "xml") || !strcmp(type, "oai"))
1833     {
1834         Z_External *r = (Z_External *) npr->u.databaseRecord;
1835         oident *ent = oid_getentbyoid(r->direct_reference);
1836
1837         /* render bibliographic record .. */
1838         if (r->which == Z_External_OPAC)
1839         {
1840             r = r->u.opac->bibliographicRecord;
1841             if (!r)
1842                 return 0;
1843             ent = oid_getentbyoid(r->direct_reference);
1844         }
1845
1846         if (r->which == Z_External_sutrs)
1847             return record_iconv_return(rec, len,
1848                                        (const char *) r->u.sutrs->buf,
1849                                        r->u.sutrs->len,
1850                                        charset);
1851         else if (r->which == Z_External_octet)
1852         {
1853             const char *ret_buf;
1854             int marc_decode_type = YAZ_MARC_MARCXML;
1855
1856             if (!strcmp(type, "oai"))
1857                 marc_decode_type = YAZ_MARC_OAIMARC;
1858             switch (ent->value)
1859             {
1860             case VAL_SOIF:
1861             case VAL_HTML:
1862             case VAL_SUTRS:
1863                 break;
1864             case VAL_TEXT_XML:
1865             case VAL_APPLICATION_XML:
1866                 break;
1867             default:
1868                 ret_buf = marc_iconv_return(
1869                     rec, marc_decode_type, len,
1870                     (const char *) r->u.octet_aligned->buf,
1871                     r->u.octet_aligned->len,
1872                     charset);
1873                 if (ret_buf)
1874                     return ret_buf;
1875             }
1876             return record_iconv_return(rec, len,
1877                                        (const char *) r->u.octet_aligned->buf,
1878                                        r->u.octet_aligned->len,
1879                                        charset);
1880         }
1881         else if (r->which == Z_External_grs1)
1882         {
1883             if (len) *len = 5;
1884             return "GRS-1";
1885         }
1886         return 0;
1887     }
1888     else if (!strcmp (type, "raw"))
1889     {
1890         Z_External *r = (Z_External *) npr->u.databaseRecord;
1891
1892         if (r->which == Z_External_sutrs)
1893         {
1894             if (len) *len = r->u.sutrs->len;
1895             return (const char *) r->u.sutrs->buf;
1896         }
1897         else if (r->which == Z_External_octet)
1898         {
1899             if (len) *len = r->u.octet_aligned->len;
1900             return (const char *) r->u.octet_aligned->buf;
1901         }
1902         else /* grs-1, explain, OPAC, ... */
1903         {
1904             if (len) *len = -1;
1905             return (const char *) npr->u.databaseRecord;
1906         }
1907         return 0;
1908     }
1909     else if (!strcmp (type, "ext"))
1910     {
1911         if (len) *len = -1;
1912         return (const char *) npr->u.databaseRecord;
1913     }
1914     else if (!strcmp (type, "opac"))
1915
1916     {
1917         Z_External *r = (Z_External *) npr->u.databaseRecord;
1918         if (r->which == Z_External_OPAC)
1919         {
1920             if (!rec->wrbuf_opac)
1921                 rec->wrbuf_opac = wrbuf_alloc();
1922             wrbuf_rewind (rec->wrbuf_opac);
1923             yaz_display_OPAC(rec->wrbuf_opac, r->u.opac, 0);
1924             return record_iconv_return(rec, len,
1925                                        wrbuf_buf(rec->wrbuf_opac),
1926                                        wrbuf_len(rec->wrbuf_opac),
1927                                        charset);
1928         }
1929     }
1930     return 0;
1931 }
1932
1933 static int strcmp_null(const char *v1, const char *v2)
1934 {
1935     if (!v1 && !v2)
1936         return 0;
1937     if (!v1 || !v2)
1938         return -1;
1939     return strcmp(v1, v2);
1940 }
1941
1942 static void record_cache_add (ZOOM_resultset r, Z_NamePlusRecord *npr,
1943                               int pos)
1944 {
1945     ZOOM_record_cache rc;
1946     const char *elementSetName =
1947         ZOOM_resultset_option_get (r, "elementSetName");
1948     const char *syntax =
1949         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
1950
1951     ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
1952     ZOOM_connection_put_event(r->connection, event);
1953
1954     for (rc = r->record_cache; rc; rc = rc->next)
1955     {
1956         if (pos == rc->pos)
1957         {
1958             if (strcmp_null(r->schema, rc->schema))
1959                 continue;
1960             if (strcmp_null(elementSetName,rc->elementSetName))
1961                 continue;
1962             if (strcmp_null(syntax, rc->syntax))
1963                 continue;
1964             /* not destroying rc->npr (it's handled by nmem )*/
1965             rc->rec.npr = npr;
1966             /* keeping wrbuf_marc too */
1967             return;
1968         }
1969     }
1970     rc = (ZOOM_record_cache) odr_malloc (r->odr, sizeof(*rc));
1971     rc->rec.npr = npr;
1972     rc->rec.odr = 0;
1973     rc->rec.wrbuf_marc = 0;
1974     rc->rec.wrbuf_iconv = 0;
1975     rc->rec.wrbuf_opac = 0;
1976     if (elementSetName)
1977         rc->elementSetName = odr_strdup (r->odr, elementSetName);
1978     else
1979         rc->elementSetName = 0;
1980
1981     if (syntax)
1982         rc->syntax = odr_strdup (r->odr, syntax);
1983     else
1984         rc->syntax = 0;
1985
1986     if (r->schema)
1987         rc->schema = odr_strdup (r->odr, r->schema);
1988     else
1989         rc->schema = 0;
1990
1991     rc->pos = pos;
1992     rc->next = r->record_cache;
1993     r->record_cache = rc;
1994 }
1995
1996 static ZOOM_record record_cache_lookup (ZOOM_resultset r, int pos)
1997 {
1998     ZOOM_record_cache rc;
1999     const char *elementSetName =
2000         ZOOM_resultset_option_get (r, "elementSetName");
2001     const char *syntax =
2002         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
2003
2004     for (rc = r->record_cache; rc; rc = rc->next)
2005     {
2006         if (pos == rc->pos)
2007         {
2008             if (strcmp_null(r->schema, rc->schema))
2009                 continue;
2010             if (strcmp_null(elementSetName,rc->elementSetName))
2011                 continue;
2012             if (strcmp_null(syntax, rc->syntax))
2013                 continue;
2014             return &rc->rec;
2015         }
2016     }
2017     return 0;
2018 }
2019
2020 static void handle_records (ZOOM_connection c, Z_Records *sr,
2021                             int present_phase)
2022 {
2023     ZOOM_resultset resultset;
2024
2025     if (!c->tasks)
2026         return ;
2027     switch (c->tasks->which)
2028     {
2029     case ZOOM_TASK_SEARCH:
2030         resultset = c->tasks->u.search.resultset;
2031         break;
2032     case ZOOM_TASK_RETRIEVE:
2033         resultset = c->tasks->u.retrieve.resultset;
2034         break;
2035     default:
2036         return;
2037     }
2038     if (sr && sr->which == Z_Records_NSD)
2039         response_default_diag(c, sr->u.nonSurrogateDiagnostic);
2040     else if (sr && sr->which == Z_Records_multipleNSD)
2041     {
2042         if (sr->u.multipleNonSurDiagnostics->num_diagRecs >= 1)
2043             response_diag(c, sr->u.multipleNonSurDiagnostics->diagRecs[0]);
2044         else
2045             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2046     }
2047     else
2048     {
2049         if (resultset->count + resultset->start > resultset->size)
2050             resultset->count = resultset->size - resultset->start;
2051         if (resultset->count < 0)
2052             resultset->count = 0;
2053         if (sr && sr->which == Z_Records_DBOSD)
2054         {
2055             int i;
2056             NMEM nmem = odr_extract_mem (c->odr_in);
2057             Z_NamePlusRecordList *p =
2058                 sr->u.databaseOrSurDiagnostics;
2059             for (i = 0; i<p->num_records; i++)
2060             {
2061                 record_cache_add (resultset, p->records[i],
2062                                   i+ resultset->start);
2063             }
2064             /* transfer our response to search_nmem .. we need it later */
2065             nmem_transfer (resultset->odr->mem, nmem);
2066             nmem_destroy (nmem);
2067             if (present_phase && p->num_records == 0)
2068             {
2069                 /* present response and we didn't get any records! */
2070                 Z_NamePlusRecord *myrec =
2071                     zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2072                 record_cache_add(resultset, myrec, resultset->start);
2073             }
2074         }
2075         else if (present_phase)
2076         {
2077             /* present response and we didn't get any records! */
2078             Z_NamePlusRecord *myrec =
2079                 zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2080             record_cache_add(resultset, myrec, resultset->start);
2081         }
2082     }
2083 }
2084
2085 static void handle_present_response (ZOOM_connection c, Z_PresentResponse *pr)
2086 {
2087     handle_records (c, pr->records, 1);
2088 }
2089
2090 static void handle_queryExpressionTerm(ZOOM_options opt, const char *name,
2091                                        Z_Term *term)
2092 {
2093     switch (term->which)
2094     {
2095     case Z_Term_general:
2096         ZOOM_options_setl(opt, name,
2097                           (const char *)(term->u.general->buf),
2098                           term->u.general->len);
2099         break;
2100     case Z_Term_characterString:
2101         ZOOM_options_set(opt, name, term->u.characterString);
2102         break;
2103     case Z_Term_numeric:
2104         ZOOM_options_set_int(opt, name, *term->u.numeric);
2105         break;
2106     }
2107 }
2108
2109 static void handle_queryExpression(ZOOM_options opt, const char *name,
2110                                    Z_QueryExpression *exp)
2111 {
2112     char opt_name[80];
2113
2114     switch (exp->which)
2115     {
2116     case Z_QueryExpression_term:
2117         if (exp->u.term && exp->u.term->queryTerm)
2118         {
2119             sprintf(opt_name, "%s.term", name);
2120             handle_queryExpressionTerm(opt, opt_name, exp->u.term->queryTerm);
2121         }
2122         break;
2123     case Z_QueryExpression_query:
2124         break;
2125     }
2126 }
2127
2128 static void handle_searchResult(ZOOM_connection c, ZOOM_resultset resultset,
2129                                 Z_OtherInformation *o)
2130 {
2131     int i;
2132     for (i = 0; o && i < o->num_elements; i++)
2133     {
2134         if (o->list[i]->which == Z_OtherInfo_externallyDefinedInfo)
2135         {
2136             Z_External *ext = o->list[i]->information.externallyDefinedInfo;
2137
2138             if (ext->which == Z_External_searchResult1)
2139             {
2140                 int j;
2141                 Z_SearchInfoReport *sr = ext->u.searchResult1;
2142
2143                 if (sr->num)
2144                     ZOOM_options_set_int(
2145                         resultset->options, "searchresult.size", sr->num);
2146
2147                 for (j = 0; j < sr->num; j++)
2148                 {
2149                     Z_SearchInfoReport_s *ent =
2150                         ext->u.searchResult1->elements[j];
2151                     char pref[80];
2152
2153                     sprintf(pref, "searchresult.%d", j);
2154
2155                     if (ent->subqueryId)
2156                     {
2157                         char opt_name[80];
2158                         sprintf(opt_name, "%s.id", pref);
2159                         ZOOM_options_set(resultset->options, opt_name,
2160                                          ent->subqueryId);
2161                     }
2162                     if (ent->subqueryExpression)
2163                     {
2164                         char opt_name[80];
2165                         sprintf(opt_name, "%s.subquery", pref);
2166                         handle_queryExpression(resultset->options, opt_name,
2167                                                ent->subqueryExpression);
2168                     }
2169                     if (ent->subqueryInterpretation)
2170                     {
2171                         char opt_name[80];
2172                         sprintf(opt_name, "%s.interpretation", pref);
2173                         handle_queryExpression(resultset->options, opt_name,
2174                                                ent->subqueryInterpretation);
2175                     }
2176                     if (ent->subqueryRecommendation)
2177                     {
2178                         char opt_name[80];
2179                         sprintf(opt_name, "%s.recommendation", pref);
2180                         handle_queryExpression(resultset->options, opt_name,
2181                                                ent->subqueryRecommendation);
2182                     }
2183                     if (ent->subqueryCount)
2184                     {
2185                         char opt_name[80];
2186                         sprintf(opt_name, "%s.count", pref);
2187                         ZOOM_options_set_int(resultset->options, opt_name,
2188                                              *ent->subqueryCount);
2189                     }
2190                 }
2191             }
2192         }
2193     }
2194 }
2195
2196 static void handle_search_response (ZOOM_connection c, Z_SearchResponse *sr)
2197 {
2198     ZOOM_resultset resultset;
2199     ZOOM_Event event;
2200
2201     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
2202         return ;
2203
2204     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
2205     ZOOM_connection_put_event(c, event);
2206
2207     resultset = c->tasks->u.search.resultset;
2208
2209     handle_searchResult(c, resultset, sr->additionalSearchInfo);
2210
2211     resultset->size = *sr->resultCount;
2212     handle_records (c, sr->records, 0);
2213 }
2214
2215 static void sort_response (ZOOM_connection c, Z_SortResponse *res)
2216 {
2217     if (res->diagnostics && res->num_diagnostics > 0)
2218         response_diag (c, res->diagnostics[0]);
2219 }
2220
2221 static int scan_response (ZOOM_connection c, Z_ScanResponse *res)
2222 {
2223     NMEM nmem = odr_extract_mem (c->odr_in);
2224     ZOOM_scanset scan;
2225
2226     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
2227         return 0;
2228     scan = c->tasks->u.scan.scan;
2229
2230     if (res->entries && res->entries->nonsurrogateDiagnostics)
2231         response_diag(c, res->entries->nonsurrogateDiagnostics[0]);
2232     scan->scan_response = res;
2233     nmem_transfer (scan->odr->mem, nmem);
2234     if (res->stepSize)
2235         ZOOM_options_set_int (scan->options, "stepSize", *res->stepSize);
2236     if (res->positionOfTerm)
2237         ZOOM_options_set_int (scan->options, "position", *res->positionOfTerm);
2238     if (res->scanStatus)
2239         ZOOM_options_set_int (scan->options, "scanStatus", *res->scanStatus);
2240     if (res->numberOfEntriesReturned)
2241         ZOOM_options_set_int (scan->options, "number",
2242                               *res->numberOfEntriesReturned);
2243     nmem_destroy (nmem);
2244     return 1;
2245 }
2246
2247 static zoom_ret send_sort (ZOOM_connection c,
2248                            ZOOM_resultset resultset)
2249 {
2250     if (c->error)
2251         resultset->r_sort_spec = 0;
2252     if (resultset->r_sort_spec)
2253     {
2254         Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_sortRequest);
2255         Z_SortRequest *req = apdu->u.sortRequest;
2256
2257         req->num_inputResultSetNames = 1;
2258         req->inputResultSetNames = (Z_InternationalString **)
2259             odr_malloc (c->odr_out, sizeof(*req->inputResultSetNames));
2260         req->inputResultSetNames[0] =
2261             odr_strdup (c->odr_out, resultset->setname);
2262         req->sortedResultSetName = odr_strdup (c->odr_out, resultset->setname);
2263         req->sortSequence = resultset->r_sort_spec;
2264         resultset->r_sort_spec = 0;
2265         return send_APDU (c, apdu);
2266     }
2267     return zoom_complete;
2268 }
2269
2270 static zoom_ret send_present(ZOOM_connection c)
2271 {
2272     Z_APDU *apdu = 0;
2273     Z_PresentRequest *req = 0;
2274     int i = 0;
2275     const char *syntax = 0;
2276     const char *elementSetName = 0;
2277     ZOOM_resultset  resultset;
2278
2279     if (!c->tasks)
2280     {
2281         yaz_log(log_details, "%p send_present no tasks", c);
2282         return zoom_complete;
2283     }
2284     switch (c->tasks->which)
2285     {
2286     case ZOOM_TASK_SEARCH:
2287         resultset = c->tasks->u.search.resultset;
2288         break;
2289     case ZOOM_TASK_RETRIEVE:
2290         resultset = c->tasks->u.retrieve.resultset;
2291         resultset->start = c->tasks->u.retrieve.start;
2292         resultset->count = c->tasks->u.retrieve.count;
2293
2294         if (resultset->start >= resultset->size)
2295         {
2296             yaz_log(log_details, "%p send_present start=%d >= size=%d",
2297                     c, resultset->start, resultset->size);
2298             return zoom_complete;
2299         }
2300         if (resultset->start + resultset->count > resultset->size)
2301             resultset->count = resultset->size - resultset->start;
2302         break;
2303     default:
2304         return zoom_complete;
2305     }
2306     yaz_log(log_details, "%p send_present start=%d count=%d",
2307             c, resultset->start, resultset->count);
2308
2309     syntax = ZOOM_resultset_option_get (resultset, "preferredRecordSyntax");
2310     elementSetName = ZOOM_resultset_option_get (resultset, "elementSetName");
2311
2312     if (c->error)                  /* don't continue on error */
2313         return zoom_complete;
2314     if (resultset->start < 0)
2315         return zoom_complete;
2316     for (i = 0; i<resultset->count; i++)
2317     {
2318         ZOOM_record rec =
2319             record_cache_lookup (resultset, i + resultset->start);
2320         if (!rec)
2321             break;
2322     }
2323     if (i == resultset->count)
2324     {
2325         yaz_log(log_details, "%p send_present skip=%d no more to fetch", c, i);
2326         return zoom_complete;
2327     }
2328
2329     apdu = zget_APDU(c->odr_out, Z_APDU_presentRequest);
2330     req = apdu->u.presentRequest;
2331
2332     resultset->start += i;
2333     resultset->count -= i;
2334
2335     if (i)
2336         yaz_log(log_details, "%p send_present skip=%d", c, i);
2337
2338     *req->resultSetStartPoint = resultset->start + 1;
2339     *req->numberOfRecordsRequested = resultset->step>0 ?
2340         resultset->step : resultset->count;
2341     assert (*req->numberOfRecordsRequested > 0);
2342
2343
2344     if (syntax && *syntax)
2345         req->preferredRecordSyntax =
2346             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
2347
2348     if (resultset->schema && *resultset->schema)
2349     {
2350         Z_RecordComposition *compo = (Z_RecordComposition *)
2351             odr_malloc (c->odr_out, sizeof(*compo));
2352
2353         req->recordComposition = compo;
2354         compo->which = Z_RecordComp_complex;
2355         compo->u.complex = (Z_CompSpec *)
2356             odr_malloc(c->odr_out, sizeof(*compo->u.complex));
2357         compo->u.complex->selectAlternativeSyntax = (bool_t *)
2358             odr_malloc(c->odr_out, sizeof(bool_t));
2359         *compo->u.complex->selectAlternativeSyntax = 0;
2360
2361         compo->u.complex->generic = (Z_Specification *)
2362             odr_malloc(c->odr_out, sizeof(*compo->u.complex->generic));
2363
2364         compo->u.complex->generic->which = Z_Schema_oid;
2365         compo->u.complex->generic->schema.oid = (Odr_oid *)
2366             yaz_str_to_z3950oid (c->odr_out, CLASS_SCHEMA, resultset->schema);
2367
2368         if (!compo->u.complex->generic->schema.oid)
2369         {
2370             /* OID wasn't a schema! Try record syntax instead. */
2371
2372             compo->u.complex->generic->schema.oid = (Odr_oid *)
2373                 yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, resultset->schema);
2374         }
2375         if (elementSetName && *elementSetName)
2376         {
2377             compo->u.complex->generic->elementSpec = (Z_ElementSpec *)
2378                 odr_malloc(c->odr_out, sizeof(Z_ElementSpec));
2379             compo->u.complex->generic->elementSpec->which =
2380                 Z_ElementSpec_elementSetName;
2381             compo->u.complex->generic->elementSpec->u.elementSetName =
2382                 odr_strdup (c->odr_out, elementSetName);
2383         }
2384         else
2385             compo->u.complex->generic->elementSpec = 0;
2386         compo->u.complex->num_dbSpecific = 0;
2387         compo->u.complex->dbSpecific = 0;
2388         compo->u.complex->num_recordSyntax = 0;
2389         compo->u.complex->recordSyntax = 0;
2390     }
2391     else if (elementSetName && *elementSetName)
2392     {
2393         Z_ElementSetNames *esn = (Z_ElementSetNames *)
2394             odr_malloc (c->odr_out, sizeof(*esn));
2395         Z_RecordComposition *compo = (Z_RecordComposition *)
2396             odr_malloc (c->odr_out, sizeof(*compo));
2397
2398         esn->which = Z_ElementSetNames_generic;
2399         esn->u.generic = odr_strdup (c->odr_out, elementSetName);
2400         compo->which = Z_RecordComp_simple;
2401         compo->u.simple = esn;
2402         req->recordComposition = compo;
2403     }
2404     req->resultSetId = odr_strdup(c->odr_out, resultset->setname);
2405     return send_APDU (c, apdu);
2406 }
2407
2408 ZOOM_API(ZOOM_scanset)
2409 ZOOM_connection_scan (ZOOM_connection c, const char *start)
2410 {
2411     ZOOM_scanset s;
2412     ZOOM_query q = ZOOM_query_create();
2413
2414     ZOOM_query_prefix (q, start);
2415
2416     s = ZOOM_connection_scan1(c, q);
2417     ZOOM_query_destroy (q);
2418     return s;
2419
2420 }
2421
2422 ZOOM_API(ZOOM_scanset)
2423 ZOOM_connection_scan1 (ZOOM_connection c, ZOOM_query q)
2424 {
2425     ZOOM_scanset scan = (ZOOM_scanset) xmalloc (sizeof(*scan));
2426     char *start;
2427     char *freeme = 0;
2428
2429     scan->connection = c;
2430     scan->odr = odr_createmem (ODR_DECODE);
2431     scan->options = ZOOM_options_create_with_parent (c->options);
2432     scan->refcount = 1;
2433     scan->scan_response = 0;
2434
2435     /*
2436      * We need to check the query-type, so we can recognise CQL and
2437      * compile it into a form that we can use here.  The ZOOM_query
2438      * structure has no explicit `type' member, but inspection of the
2439      * ZOOM_query_prefix() and ZOOM_query_cql() functions shows how
2440      * the structure is set up in each case.
2441      */
2442
2443     if (q->z_query->which == Z_Query_type_1) {
2444         yaz_log(log_api, "%p ZOOM_connection_scan1 q=%p PQF '%s'",
2445                 c, q, q->query_string);
2446         start = q->query_string;
2447     } else if (q->z_query->which == Z_Query_type_104) {
2448         yaz_log(log_api, "%p ZOOM_connection_scan1 q=%p CQL '%s'",
2449                 c, q, q->query_string);
2450         start = freeme = cql2pqf(c, q->query_string);
2451         if (start == 0)
2452             return 0;
2453     } else {
2454         yaz_log(YLOG_FATAL, "%p ZOOM_connection_scan1 q=%p unknown type '%s'",
2455                 c, q, q->query_string);
2456         abort();
2457     }
2458
2459     scan->termListAndStartPoint =
2460         p_query_scan(scan->odr, PROTO_Z3950, &scan->attributeSet, start);
2461     xfree (freeme);
2462     if (scan->termListAndStartPoint != 0)
2463     {
2464         ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_SCAN);
2465         task->u.scan.scan = scan;
2466
2467         (scan->refcount)++;
2468         if (!c->async)
2469         {
2470             while (ZOOM_event (1, &c))
2471                 ;
2472         }
2473     }
2474     return scan;
2475 }
2476
2477 ZOOM_API(void)
2478 ZOOM_scanset_destroy (ZOOM_scanset scan)
2479 {
2480     if (!scan)
2481         return;
2482     (scan->refcount)--;
2483     if (scan->refcount == 0)
2484     {
2485         odr_destroy (scan->odr);
2486
2487         ZOOM_options_destroy (scan->options);
2488         xfree (scan);
2489     }
2490 }
2491
2492 static zoom_ret send_package (ZOOM_connection c)
2493 {
2494     ZOOM_Event event;
2495
2496     yaz_log(log_details, "%p send_package", c);
2497     if (!c->tasks)
2498         return zoom_complete;
2499     assert (c->tasks->which == ZOOM_TASK_PACKAGE);
2500
2501     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
2502     ZOOM_connection_put_event (c, event);
2503
2504     return do_write_ex (c, c->tasks->u.package->buf_out,
2505                         c->tasks->u.package->len_out);
2506 }
2507
2508 static zoom_ret send_scan (ZOOM_connection c)
2509 {
2510     ZOOM_scanset scan;
2511     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_scanRequest);
2512     Z_ScanRequest *req = apdu->u.scanRequest;
2513
2514     yaz_log(log_details, "%p send_scan", c);
2515     if (!c->tasks)
2516         return zoom_complete;
2517     assert (c->tasks->which == ZOOM_TASK_SCAN);
2518     scan = c->tasks->u.scan.scan;
2519
2520     req->termListAndStartPoint = scan->termListAndStartPoint;
2521     req->attributeSet = scan->attributeSet;
2522
2523     *req->numberOfTermsRequested =
2524         ZOOM_options_get_int(scan->options, "number", 10);
2525
2526     req->preferredPositionInResponse =
2527         odr_intdup (c->odr_out,
2528                     ZOOM_options_get_int(scan->options, "position", 1));
2529
2530     req->stepSize =
2531         odr_intdup (c->odr_out,
2532                     ZOOM_options_get_int(scan->options, "stepSize", 0));
2533
2534     req->databaseNames = set_DatabaseNames (c, scan->options,
2535                                             &req->num_databaseNames);
2536
2537     return send_APDU (c, apdu);
2538 }
2539
2540 ZOOM_API(size_t)
2541 ZOOM_scanset_size (ZOOM_scanset scan)
2542 {
2543     if (!scan || !scan->scan_response || !scan->scan_response->entries)
2544         return 0;
2545     return scan->scan_response->entries->num_entries;
2546 }
2547
2548 ZOOM_API(const char *)
2549 ZOOM_scanset_term (ZOOM_scanset scan, size_t pos,
2550                    int *occ, int *len)
2551 {
2552     const char *term = 0;
2553     size_t noent = ZOOM_scanset_size (scan);
2554     Z_ScanResponse *res = scan->scan_response;
2555
2556     *len = 0;
2557     *occ = 0;
2558     if (pos >= noent)
2559         return 0;
2560     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2561     {
2562         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2563
2564         if (t->term->which == Z_Term_general)
2565         {
2566             term = (const char *) t->term->u.general->buf;
2567             *len = t->term->u.general->len;
2568         }
2569         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2570     }
2571     return term;
2572 }
2573
2574 ZOOM_API(const char *)
2575 ZOOM_scanset_display_term (ZOOM_scanset scan, size_t pos,
2576                            int *occ, int *len)
2577 {
2578     const char *term = 0;
2579     size_t noent = ZOOM_scanset_size (scan);
2580     Z_ScanResponse *res = scan->scan_response;
2581
2582     *len = 0;
2583     *occ = 0;
2584     if (pos >= noent)
2585         return 0;
2586     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2587     {
2588         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2589
2590         if (t->displayTerm)
2591         {
2592             term = t->displayTerm;
2593             *len = strlen(term);
2594         }
2595         else if (t->term->which == Z_Term_general)
2596         {
2597             term = (const char *) t->term->u.general->buf;
2598             *len = t->term->u.general->len;
2599         }
2600         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2601     }
2602     return term;
2603 }
2604
2605 ZOOM_API(const char *)
2606 ZOOM_scanset_option_get (ZOOM_scanset scan, const char *key)
2607 {
2608     return ZOOM_options_get (scan->options, key);
2609 }
2610
2611 ZOOM_API(void)
2612 ZOOM_scanset_option_set (ZOOM_scanset scan, const char *key,
2613                               const char *val)
2614 {
2615     ZOOM_options_set (scan->options, key, val);
2616 }
2617
2618 static Z_APDU *create_es_package (ZOOM_package p, int type)
2619 {
2620     const char *str;
2621     Z_APDU *apdu = zget_APDU(p->odr_out, Z_APDU_extendedServicesRequest);
2622     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2623
2624     *req->function = Z_ExtendedServicesRequest_create;
2625
2626     str = ZOOM_options_get(p->options, "package-name");
2627     if (str && *str)
2628         req->packageName = nmem_strdup (p->odr_out->mem, str);
2629
2630     str = ZOOM_options_get(p->options, "user-id");
2631     if (str)
2632         req->userId = nmem_strdup (p->odr_out->mem, str);
2633
2634     req->packageType = yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2635                                               type);
2636
2637     str = ZOOM_options_get(p->options, "function");
2638     if (str)
2639     {
2640         if (!strcmp (str, "create"))
2641             *req->function = 1;
2642         if (!strcmp (str, "delete"))
2643             *req->function = 2;
2644         if (!strcmp (str, "modify"))
2645             *req->function = 3;
2646     }
2647     return apdu;
2648 }
2649
2650 static const char *ill_array_lookup (void *clientData, const char *idx)
2651 {
2652     ZOOM_package p = (ZOOM_package) clientData;
2653     return ZOOM_options_get (p->options, idx+4);
2654 }
2655
2656 static Z_External *encode_ill_request (ZOOM_package p)
2657 {
2658     ODR out = p->odr_out;
2659     ILL_Request *req;
2660     Z_External *r = 0;
2661     struct ill_get_ctl ctl;
2662
2663     ctl.odr = p->odr_out;
2664     ctl.clientData = p;
2665     ctl.f = ill_array_lookup;
2666
2667     req = ill_get_ILLRequest(&ctl, "ill", 0);
2668
2669     if (!ill_Request (out, &req, 0, 0))
2670     {
2671         int ill_request_size;
2672         char *ill_request_buf = odr_getbuf (out, &ill_request_size, 0);
2673         if (ill_request_buf)
2674             odr_setbuf (out, ill_request_buf, ill_request_size, 1);
2675         return 0;
2676     }
2677     else
2678     {
2679         oident oid;
2680         int illRequest_size = 0;
2681         char *illRequest_buf = odr_getbuf (out, &illRequest_size, 0);
2682
2683         oid.proto = PROTO_GENERAL;
2684         oid.oclass = CLASS_GENERAL;
2685         oid.value = VAL_ISO_ILL_1;
2686
2687         r = (Z_External *) odr_malloc (out, sizeof(*r));
2688         r->direct_reference = odr_oiddup(out,oid_getoidbyent(&oid));
2689         r->indirect_reference = 0;
2690         r->descriptor = 0;
2691         r->which = Z_External_single;
2692
2693         r->u.single_ASN1_type = (Odr_oct *)
2694             odr_malloc (out, sizeof(*r->u.single_ASN1_type));
2695         r->u.single_ASN1_type->buf = (unsigned char*)
2696             odr_malloc (out, illRequest_size);
2697         r->u.single_ASN1_type->len = illRequest_size;
2698         r->u.single_ASN1_type->size = illRequest_size;
2699         memcpy (r->u.single_ASN1_type->buf, illRequest_buf, illRequest_size);
2700     }
2701     return r;
2702 }
2703
2704 static Z_ItemOrder *encode_item_order(ZOOM_package p)
2705 {
2706     Z_ItemOrder *req = (Z_ItemOrder *) odr_malloc (p->odr_out, sizeof(*req));
2707     const char *str;
2708
2709     req->which = Z_IOItemOrder_esRequest;
2710     req->u.esRequest = (Z_IORequest *)
2711         odr_malloc(p->odr_out,sizeof(Z_IORequest));
2712
2713     /* to keep part ... */
2714     req->u.esRequest->toKeep = (Z_IOOriginPartToKeep *)
2715         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartToKeep));
2716     req->u.esRequest->toKeep->supplDescription = 0;
2717     req->u.esRequest->toKeep->contact = (Z_IOContact *)
2718         odr_malloc (p->odr_out, sizeof(*req->u.esRequest->toKeep->contact));
2719
2720     str = ZOOM_options_get(p->options, "contact-name");
2721     req->u.esRequest->toKeep->contact->name = str ?
2722         nmem_strdup (p->odr_out->mem, str) : 0;
2723
2724     str = ZOOM_options_get(p->options, "contact-phone");
2725     req->u.esRequest->toKeep->contact->phone = str ?
2726         nmem_strdup (p->odr_out->mem, str) : 0;
2727
2728     str = ZOOM_options_get(p->options, "contact-email");
2729     req->u.esRequest->toKeep->contact->email = str ?
2730         nmem_strdup (p->odr_out->mem, str) : 0;
2731
2732     req->u.esRequest->toKeep->addlBilling = 0;
2733
2734     /* not to keep part ... */
2735     req->u.esRequest->notToKeep = (Z_IOOriginPartNotToKeep *)
2736         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartNotToKeep));
2737
2738     str = ZOOM_options_get(p->options, "itemorder-setname");
2739     if (!str)
2740         str = "default";
2741
2742     if (!*str)
2743         req->u.esRequest->notToKeep->resultSetItem = 0;
2744     else
2745     {
2746         req->u.esRequest->notToKeep->resultSetItem = (Z_IOResultSetItem *)
2747            odr_malloc(p->odr_out, sizeof(Z_IOResultSetItem));
2748
2749         req->u.esRequest->notToKeep->resultSetItem->resultSetId =
2750            nmem_strdup (p->odr_out->mem, str);
2751         req->u.esRequest->notToKeep->resultSetItem->item =
2752             (int *) odr_malloc(p->odr_out, sizeof(int));
2753
2754         str = ZOOM_options_get(p->options, "itemorder-item");
2755         *req->u.esRequest->notToKeep->resultSetItem->item =
2756             (str ? atoi(str) : 1);
2757     }
2758     req->u.esRequest->notToKeep->itemRequest = encode_ill_request(p);
2759
2760     return req;
2761 }
2762
2763 Z_APDU *create_admin_package(ZOOM_package p, int type,
2764                              Z_ESAdminOriginPartToKeep **toKeepP,
2765                              Z_ESAdminOriginPartNotToKeep **notToKeepP)
2766 {
2767     Z_APDU *apdu = create_es_package (p, VAL_ADMINSERVICE);
2768     if (apdu)
2769     {
2770         Z_ESAdminOriginPartToKeep  *toKeep;
2771         Z_ESAdminOriginPartNotToKeep  *notToKeep;
2772         Z_External *r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
2773         const char *first_db = "Default";
2774         int num_db;
2775         char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2776         if (num_db > 0)
2777             first_db = db[0];
2778
2779         r->direct_reference =
2780             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2781                                    VAL_ADMINSERVICE);
2782         r->descriptor = 0;
2783         r->indirect_reference = 0;
2784         r->which = Z_External_ESAdmin;
2785
2786         r->u.adminService = (Z_Admin *)
2787             odr_malloc(p->odr_out, sizeof(*r->u.adminService));
2788         r->u.adminService->which = Z_Admin_esRequest;
2789         r->u.adminService->u.esRequest = (Z_AdminEsRequest *)
2790             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest));
2791
2792         toKeep = r->u.adminService->u.esRequest->toKeep =
2793             (Z_ESAdminOriginPartToKeep *)
2794             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest->toKeep));
2795         toKeep->which = type;
2796         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2797         toKeep->u.create = odr_nullval();
2798         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2799
2800         r->u.adminService->u.esRequest->notToKeep = notToKeep =
2801             (Z_ESAdminOriginPartNotToKeep *)
2802             odr_malloc(p->odr_out,
2803                        sizeof(*r->u.adminService->u.esRequest->notToKeep));
2804         notToKeep->which = Z_ESAdminOriginPartNotToKeep_recordsWillFollow;
2805         notToKeep->u.recordsWillFollow = odr_nullval();
2806         if (toKeepP)
2807             *toKeepP = toKeep;
2808         if (notToKeepP)
2809             *notToKeepP = notToKeep;
2810     }
2811     return apdu;
2812 }
2813
2814 static Z_APDU *create_xmlupdate_package(ZOOM_package p)
2815 {
2816     Z_APDU *apdu = create_es_package(p, VAL_XMLES);
2817     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2818     Z_External *ext = (Z_External *) odr_malloc(p->odr_out, sizeof(*ext));
2819     const char *doc = ZOOM_options_get(p->options, "doc");
2820
2821     req->taskSpecificParameters = ext;
2822     ext->direct_reference = req->packageType;
2823     ext->descriptor = 0;
2824     ext->indirect_reference = 0;
2825
2826     ext->which = Z_External_octet;
2827     ext->u.single_ASN1_type = (Odr_oct *)
2828         odr_malloc (p->odr_out, sizeof(Odr_oct));
2829
2830     if (!doc)
2831         doc = "";
2832     ext->u.single_ASN1_type->buf = (unsigned char*)
2833         odr_strdup(p->odr_out, doc);
2834     ext->u.single_ASN1_type->size = ext->u.single_ASN1_type->len = strlen(doc);
2835     return apdu;
2836 }
2837
2838 static Z_APDU *create_update_package(ZOOM_package p)
2839 {
2840     Z_APDU *apdu = 0;
2841     const char *first_db = "Default";
2842     int num_db;
2843     char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2844     const char *action = ZOOM_options_get(p->options, "action");
2845     const char *recordIdOpaque = ZOOM_options_get(p->options, "recordIdOpaque");
2846     const char *recordIdNumber = ZOOM_options_get(p->options, "recordIdNumber");
2847     const char *record_buf = ZOOM_options_get(p->options, "record");
2848     const char *syntax_str = ZOOM_options_get(p->options, "syntax");
2849     int syntax_oid = VAL_NONE;
2850     int action_no = -1;
2851
2852     if (syntax_str)
2853         syntax_oid = oid_getvalbyname(syntax_str);
2854     if (!record_buf)
2855     {
2856         record_buf = "void";
2857         syntax_oid = VAL_SUTRS;
2858     }
2859     if (syntax_oid == VAL_NONE)
2860         syntax_oid = VAL_TEXT_XML;
2861
2862     if (num_db > 0)
2863         first_db = db[0];
2864
2865     if (!action)
2866         action = "specialUpdate";
2867
2868     if (!strcmp(action, "recordInsert"))
2869         action_no = Z_IUOriginPartToKeep_recordInsert;
2870     else if (!strcmp(action, "recordReplace"))
2871         action_no = Z_IUOriginPartToKeep_recordReplace;
2872     else if (!strcmp(action, "recordDelete"))
2873         action_no = Z_IUOriginPartToKeep_recordDelete;
2874     else if (!strcmp(action, "elementUpdate"))
2875         action_no = Z_IUOriginPartToKeep_elementUpdate;
2876     else if (!strcmp(action, "specialUpdate"))
2877         action_no = Z_IUOriginPartToKeep_specialUpdate;
2878     else
2879         return 0;
2880
2881     apdu = create_es_package (p, VAL_DBUPDATE);
2882     if (apdu)
2883     {
2884         Z_IUOriginPartToKeep *toKeep;
2885         Z_IUSuppliedRecords *notToKeep;
2886         Z_External *r = (Z_External *)
2887             odr_malloc (p->odr_out, sizeof(*r));
2888
2889         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2890
2891         r->direct_reference =
2892             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2893                                    VAL_DBUPDATE);
2894         r->descriptor = 0;
2895         r->which = Z_External_update;
2896         r->indirect_reference = 0;
2897         r->u.update = (Z_IUUpdate *)
2898             odr_malloc(p->odr_out, sizeof(*r->u.update));
2899
2900         r->u.update->which = Z_IUUpdate_esRequest;
2901         r->u.update->u.esRequest = (Z_IUUpdateEsRequest *)
2902             odr_malloc(p->odr_out, sizeof(*r->u.update->u.esRequest));
2903         toKeep = r->u.update->u.esRequest->toKeep =
2904             (Z_IUOriginPartToKeep *)
2905             odr_malloc(p->odr_out, sizeof(*toKeep));
2906
2907         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2908         toKeep->schema = 0;
2909         toKeep->elementSetName = 0;
2910         toKeep->actionQualifier = 0;
2911         toKeep->action = odr_intdup(p->odr_out, action_no);
2912
2913         notToKeep = r->u.update->u.esRequest->notToKeep =
2914             (Z_IUSuppliedRecords *)
2915             odr_malloc(p->odr_out, sizeof(*notToKeep));
2916         notToKeep->num = 1;
2917         notToKeep->elements = (Z_IUSuppliedRecords_elem **)
2918             odr_malloc(p->odr_out, sizeof(*notToKeep->elements));
2919         notToKeep->elements[0] = (Z_IUSuppliedRecords_elem *)
2920             odr_malloc(p->odr_out, sizeof(**notToKeep->elements));
2921         notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_opaque;
2922         if (recordIdOpaque)
2923         {
2924             notToKeep->elements[0]->u.opaque = (Odr_oct *)
2925                 odr_malloc (p->odr_out, sizeof(Odr_oct));
2926             notToKeep->elements[0]->u.opaque->size =
2927                 notToKeep->elements[0]->u.opaque->len = strlen(recordIdOpaque);
2928             notToKeep->elements[0]->u.opaque->buf = (unsigned char*)
2929                 odr_strdup(p->odr_out, recordIdOpaque);
2930         }
2931         else if (recordIdNumber)
2932         {
2933             notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_number;
2934
2935             notToKeep->elements[0]->u.number =
2936                 odr_intdup(p->odr_out, atoi(recordIdNumber));
2937         }
2938         else
2939             notToKeep->elements[0]->u.opaque = 0;
2940         notToKeep->elements[0]->supplementalId = 0;
2941         notToKeep->elements[0]->correlationInfo = 0;
2942         notToKeep->elements[0]->record =
2943             z_ext_record(p->odr_out, syntax_oid,
2944                          record_buf, strlen(record_buf));
2945     }
2946     if (0 && apdu)
2947     {
2948        ODR print = odr_createmem(ODR_PRINT);
2949
2950        z_APDU(print, &apdu, 0, 0);
2951        odr_destroy(print);
2952     }
2953     return apdu;
2954 }
2955
2956 ZOOM_API(void)
2957     ZOOM_package_send (ZOOM_package p, const char *type)
2958 {
2959     Z_APDU *apdu = 0;
2960     ZOOM_connection c;
2961     if (!p)
2962         return;
2963     c = p->connection;
2964     odr_reset (p->odr_out);
2965     xfree (p->buf_out);
2966     p->buf_out = 0;
2967     if (!strcmp(type, "itemorder"))
2968     {
2969         apdu = create_es_package (p, VAL_ITEMORDER);
2970         if (apdu)
2971         {
2972             Z_External *r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
2973
2974             r->direct_reference =
2975                 yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2976                                        VAL_ITEMORDER);
2977             r->descriptor = 0;
2978             r->which = Z_External_itemOrder;
2979             r->indirect_reference = 0;
2980             r->u.itemOrder = encode_item_order (p);
2981
2982             apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2983         }
2984     }
2985     else if (!strcmp(type, "create"))  /* create database */
2986     {
2987         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_create,
2988                                     0, 0);
2989     }
2990     else if (!strcmp(type, "drop"))  /* drop database */
2991     {
2992         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_drop,
2993                                     0, 0);
2994     }
2995     else if (!strcmp(type, "commit"))  /* commit changes */
2996     {
2997         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_commit,
2998                                     0, 0);
2999     }
3000     else if (!strcmp(type, "update")) /* update record(s) */
3001     {
3002         apdu = create_update_package(p);
3003     }
3004     else if (!strcmp(type, "xmlupdate"))
3005     {
3006         apdu = create_xmlupdate_package(p);
3007     }
3008     if (apdu)
3009     {
3010         if (encode_APDU(p->connection, apdu, p->odr_out) == 0)
3011         {
3012             char *buf;
3013
3014             ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_PACKAGE);
3015             task->u.package = p;
3016             buf = odr_getbuf(p->odr_out, &p->len_out, 0);
3017             p->buf_out = (char *) xmalloc (p->len_out);
3018             memcpy (p->buf_out, buf, p->len_out);
3019
3020             (p->refcount)++;
3021             if (!c->async)
3022             {
3023                 while (ZOOM_event (1, &c))
3024                     ;
3025             }
3026         }
3027     }
3028 }
3029
3030 ZOOM_API(ZOOM_package)
3031     ZOOM_connection_package (ZOOM_connection c, ZOOM_options options)
3032 {
3033     ZOOM_package p = (ZOOM_package) xmalloc (sizeof(*p));
3034
3035     p->connection = c;
3036     p->odr_out = odr_createmem (ODR_ENCODE);
3037     p->options = ZOOM_options_create_with_parent2 (options, c->options);
3038     p->refcount = 1;
3039     p->buf_out = 0;
3040     p->len_out = 0;
3041     return p;
3042 }
3043
3044 ZOOM_API(void)
3045     ZOOM_package_destroy(ZOOM_package p)
3046 {
3047     if (!p)
3048         return;
3049     (p->refcount)--;
3050     if (p->refcount == 0)
3051     {
3052         odr_destroy (p->odr_out);
3053         xfree (p->buf_out);
3054
3055         ZOOM_options_destroy (p->options);
3056         xfree (p);
3057     }
3058 }
3059
3060 ZOOM_API(const char *)
3061 ZOOM_package_option_get (ZOOM_package p, const char *key)
3062 {
3063     return ZOOM_options_get (p->options, key);
3064 }
3065
3066
3067 ZOOM_API(void)
3068 ZOOM_package_option_set (ZOOM_package p, const char *key,
3069                               const char *val)
3070 {
3071     ZOOM_options_set (p->options, key, val);
3072 }
3073
3074 static int ZOOM_connection_exec_task (ZOOM_connection c)
3075 {
3076     ZOOM_task task = c->tasks;
3077     zoom_ret ret = zoom_complete;
3078
3079     if (!task)
3080         return 0;
3081     yaz_log(log_details, "%p ZOOM_connection_exec_task type=%d run=%d",
3082              c, task->which, task->running);
3083     if (c->error != ZOOM_ERROR_NONE)
3084     {
3085         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3086                 "removing tasks because of error = %d", c, c->error);
3087         ZOOM_connection_remove_tasks (c);
3088         return 0;
3089     }
3090     if (task->running)
3091     {
3092         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3093                  "task already running", c);
3094         return 0;
3095     }
3096     task->running = 1;
3097     ret = zoom_complete;
3098     if (c->cs || task->which == ZOOM_TASK_CONNECT)
3099     {
3100         switch (task->which)
3101         {
3102         case ZOOM_TASK_SEARCH:
3103             if (c->proto == PROTO_HTTP)
3104                 ret = ZOOM_connection_srw_send_search(c);
3105             else
3106                 ret = ZOOM_connection_send_search(c);
3107             break;
3108         case ZOOM_TASK_RETRIEVE:
3109             if (c->proto == PROTO_HTTP)
3110                 ret = ZOOM_connection_srw_send_search(c);
3111             else
3112                 ret = send_present (c);
3113             break;
3114         case ZOOM_TASK_CONNECT:
3115             ret = do_connect(c);
3116             break;
3117         case ZOOM_TASK_SCAN:
3118             ret = send_scan(c);
3119             break;
3120         case ZOOM_TASK_PACKAGE:
3121             ret = send_package(c);
3122             break;
3123         case ZOOM_TASK_SORT:
3124             c->tasks->u.sort.resultset->r_sort_spec =
3125                 c->tasks->u.sort.q->sort_spec;
3126             ret = send_sort(c, c->tasks->u.sort.resultset);
3127             break;
3128         }
3129     }
3130     else
3131     {
3132         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3133                 "remove tasks because no connection exist", c);
3134         ZOOM_connection_remove_tasks (c);
3135     }
3136     if (ret == zoom_complete)
3137     {
3138         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3139                  "task removed (complete)", c);
3140         ZOOM_connection_remove_task (c);
3141         return 0;
3142     }
3143     yaz_log(log_details, "%p ZOOM_connection_exec_task "
3144             "task pending", c);
3145     return 1;
3146 }
3147
3148 static zoom_ret send_sort_present (ZOOM_connection c)
3149 {
3150     zoom_ret r = zoom_complete;
3151
3152     if (c->tasks && c->tasks->which == ZOOM_TASK_SEARCH)
3153         r = send_sort (c, c->tasks->u.search.resultset);
3154     if (r == zoom_complete)
3155         r = send_present (c);
3156     return r;
3157 }
3158
3159 static int es_response (ZOOM_connection c,
3160                         Z_ExtendedServicesResponse *res)
3161 {
3162     if (!c->tasks || c->tasks->which != ZOOM_TASK_PACKAGE)
3163         return 0;
3164     if (res->diagnostics && res->num_diagnostics > 0)
3165         response_diag(c, res->diagnostics[0]);
3166     if (res->taskPackage &&
3167         res->taskPackage->which == Z_External_extendedService)
3168     {
3169         Z_TaskPackage *taskPackage = res->taskPackage->u.extendedService;
3170         Odr_oct *id = taskPackage->targetReference;
3171
3172         if (id)
3173             ZOOM_options_setl (c->tasks->u.package->options,
3174                                "targetReference", (char*) id->buf, id->len);
3175     }
3176     if (res->taskPackage &&
3177         res->taskPackage->which == Z_External_octet)
3178     {
3179         Odr_oct *doc = res->taskPackage->u.octet_aligned;
3180         ZOOM_options_setl (c->tasks->u.package->options,
3181                            "xmlUpdateDoc", (char*) doc->buf, doc->len);
3182     }
3183     return 1;
3184 }
3185
3186 static void interpret_init_diag(ZOOM_connection c,
3187                                 Z_DiagnosticFormat *diag)
3188 {
3189     if (diag->num > 0)
3190     {
3191         Z_DiagnosticFormat_s *ds = diag->elements[0];
3192         if (ds->which == Z_DiagnosticFormat_s_defaultDiagRec)
3193             response_default_diag(c, ds->u.defaultDiagRec);
3194     }
3195 }
3196
3197
3198 static void interpret_otherinformation_field(ZOOM_connection c,
3199                                              Z_OtherInformation *ui)
3200 {
3201     int i;
3202     for (i = 0; i < ui->num_elements; i++)
3203     {
3204         Z_OtherInformationUnit *unit = ui->list[i];
3205         if (unit->which == Z_OtherInfo_externallyDefinedInfo &&
3206             unit->information.externallyDefinedInfo &&
3207             unit->information.externallyDefinedInfo->which ==
3208             Z_External_diag1)
3209         {
3210             interpret_init_diag(c, unit->information.externallyDefinedInfo->u.diag1);
3211         }
3212     }
3213 }
3214
3215 static void recv_apdu (ZOOM_connection c, Z_APDU *apdu)
3216 {
3217     Z_InitResponse *initrs;
3218
3219     c->mask = 0;
3220     yaz_log(log_details, "%p recv_apdu apdu->which=%d", c, apdu->which);
3221     switch(apdu->which)
3222     {
3223     case Z_APDU_initResponse:
3224         yaz_log(log_api, "%p recv_apd: Received Init response", c);
3225         initrs = apdu->u.initResponse;
3226         ZOOM_connection_option_set(c, "serverImplementationId",
3227                                    initrs->implementationId ?
3228                                    initrs->implementationId : "");
3229         ZOOM_connection_option_set(c, "serverImplementationName",
3230                                    initrs->implementationName ?
3231                                    initrs->implementationName : "");
3232         ZOOM_connection_option_set(c, "serverImplementationVersion",
3233                                    initrs->implementationVersion ?
3234                                    initrs->implementationVersion : "");
3235         /* Set the three old options too, for old applications */
3236         ZOOM_connection_option_set(c, "targetImplementationId",
3237                                    initrs->implementationId ?
3238                                    initrs->implementationId : "");
3239         ZOOM_connection_option_set(c, "targetImplementationName",
3240                                    initrs->implementationName ?
3241                                    initrs->implementationName : "");
3242         ZOOM_connection_option_set(c, "targetImplementationVersion",
3243                                    initrs->implementationVersion ?
3244                                    initrs->implementationVersion : "");
3245         if (!*initrs->result)
3246         {
3247             Z_External *uif = initrs->userInformationField;
3248
3249             set_ZOOM_error(c, ZOOM_ERROR_INIT, 0); /* default error */
3250
3251             if (uif && uif->which == Z_External_userInfo1)
3252                 interpret_otherinformation_field(c, uif->u.userInfo1);
3253         }
3254         else
3255         {
3256             char *cookie =
3257                 yaz_oi_get_string_oidval (&apdu->u.initResponse->otherInfo,
3258                                           VAL_COOKIE, 1, 0);
3259             xfree (c->cookie_in);
3260             c->cookie_in = 0;
3261             if (cookie)
3262                 c->cookie_in = xstrdup(cookie);
3263             if (ODR_MASK_GET(initrs->options, Z_Options_namedResultSets) &&
3264                 ODR_MASK_GET(initrs->protocolVersion, Z_ProtocolVersion_3))
3265                 c->support_named_resultsets = 1;
3266             if (c->tasks)
3267             {
3268                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
3269                 ZOOM_connection_remove_task (c);
3270             }
3271             ZOOM_connection_exec_task (c);
3272         }
3273         if (ODR_MASK_GET(initrs->options, Z_Options_negotiationModel))
3274         {
3275             NMEM tmpmem = nmem_create();
3276             Z_CharSetandLanguageNegotiation *p =
3277                 yaz_get_charneg_record(initrs->otherInfo);
3278
3279             if (p)
3280             {
3281                 char *charset = NULL, *lang = NULL;
3282                 int sel;
3283
3284                 yaz_get_response_charneg(tmpmem, p, &charset, &lang, &sel);
3285                 yaz_log(log_details, "%p recv_apdu target accepted: "
3286                         "charset %s, language %s, select %d",
3287                         c,
3288                         charset ? charset : "none", lang ? lang : "none", sel);
3289                 if (charset)
3290                     ZOOM_connection_option_set (c, "negotiation-charset",
3291                                                 charset);
3292                 if (lang)
3293                     ZOOM_connection_option_set (c, "negotiation-lang",
3294                                                 lang);
3295
3296                 ZOOM_connection_option_set (
3297                     c,  "negotiation-charset-in-effect-for-records",
3298                     (sel != 0) ? "1" : "0");
3299                 nmem_destroy(tmpmem);
3300             }
3301         }
3302         break;
3303     case Z_APDU_searchResponse:
3304         yaz_log(log_api, "%p recv_apdu Search response", c);
3305         handle_search_response (c, apdu->u.searchResponse);
3306         if (send_sort_present (c) == zoom_complete)
3307             ZOOM_connection_remove_task (c);
3308         break;
3309     case Z_APDU_presentResponse:
3310         yaz_log(log_api, "%p recv_apdu Present response", c);
3311         handle_present_response (c, apdu->u.presentResponse);
3312         if (send_present (c) == zoom_complete)
3313             ZOOM_connection_remove_task (c);
3314         break;
3315     case Z_APDU_sortResponse:
3316         yaz_log(log_api, "%p recv_apdu Sort response", c);
3317         sort_response (c, apdu->u.sortResponse);
3318         if (send_present (c) == zoom_complete)
3319             ZOOM_connection_remove_task (c);
3320         break;
3321     case Z_APDU_scanResponse:
3322         yaz_log(log_api, "%p recv_apdu Scan response", c);
3323         scan_response (c, apdu->u.scanResponse);
3324         ZOOM_connection_remove_task (c);
3325         break;
3326     case Z_APDU_extendedServicesResponse:
3327         yaz_log(log_api, "%p recv_apdu Extended Services response", c);
3328         es_response (c, apdu->u.extendedServicesResponse);
3329         ZOOM_connection_remove_task (c);
3330         break;
3331     case Z_APDU_close:
3332         yaz_log(log_api, "%p recv_apdu Close PDU", c);
3333         if (c->reconnect_ok)
3334         {
3335             do_close(c);
3336             c->tasks->running = 0;
3337             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3338         }
3339         else
3340         {
3341             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3342             do_close(c);
3343         }
3344         break;
3345     default:
3346         yaz_log(log_api, "%p Received unknown PDU", c);
3347         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3348         do_close(c);
3349     }
3350 }
3351
3352 #if HAVE_XML2
3353 static void handle_srw_response(ZOOM_connection c,
3354                                 Z_SRW_searchRetrieveResponse *res)
3355 {
3356     ZOOM_resultset resultset = 0;
3357     int i;
3358     NMEM nmem;
3359     ZOOM_Event event;
3360
3361     if (!c->tasks)
3362         return;
3363
3364     if (c->tasks->which == ZOOM_TASK_SEARCH)
3365         resultset = c->tasks->u.search.resultset;
3366     else if (c->tasks->which == ZOOM_TASK_RETRIEVE)
3367         resultset = c->tasks->u.retrieve.resultset;
3368     else
3369         return ;
3370
3371     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
3372     ZOOM_connection_put_event(c, event);
3373
3374     resultset->size = 0;
3375
3376     yaz_log(log_details, "%p handle_srw_response got SRW response OK", c);
3377
3378     if (res->numberOfRecords)
3379         resultset->size = *res->numberOfRecords;
3380
3381     for (i = 0; i<res->num_records; i++)
3382     {
3383         int pos;
3384
3385         Z_NamePlusRecord *npr = (Z_NamePlusRecord *)
3386             odr_malloc(c->odr_in, sizeof(Z_NamePlusRecord));
3387
3388         if (res->records[i].recordPosition &&
3389             *res->records[i].recordPosition > 0)
3390             pos = *res->records[i].recordPosition - 1;
3391         else
3392             pos = resultset->start + i;
3393
3394         npr->databaseName = 0;
3395         npr->which = Z_NamePlusRecord_databaseRecord;
3396         npr->u.databaseRecord = (Z_External *)
3397             odr_malloc(c->odr_in, sizeof(Z_External));
3398         npr->u.databaseRecord->descriptor = 0;
3399         npr->u.databaseRecord->direct_reference =
3400             yaz_oidval_to_z3950oid(c->odr_in, CLASS_RECSYN, VAL_TEXT_XML);
3401         npr->u.databaseRecord->which = Z_External_octet;
3402         npr->u.databaseRecord->u.octet_aligned = (Odr_oct *)
3403             odr_malloc(c->odr_in, sizeof(Odr_oct));
3404         npr->u.databaseRecord->u.octet_aligned->buf = (unsigned char*)
3405             res->records[i].recordData_buf;
3406         npr->u.databaseRecord->u.octet_aligned->len =
3407             npr->u.databaseRecord->u.octet_aligned->size =
3408             res->records[i].recordData_len;
3409         record_cache_add (resultset, npr, pos);
3410     }
3411     if (res->num_diagnostics > 0)
3412     {
3413         const char *uri = res->diagnostics[0].uri;
3414         if (uri)
3415         {
3416             int code = 0;
3417             const char *cp;
3418             if ((cp = strrchr(uri, '/')))
3419                 code = atoi(cp+1);
3420             set_dset_error(c, code, uri,
3421                            res->diagnostics[0].details, 0);
3422         }
3423     }
3424     nmem = odr_extract_mem(c->odr_in);
3425     nmem_transfer(resultset->odr->mem, nmem);
3426     nmem_destroy(nmem);
3427 }
3428 #endif
3429
3430 #if HAVE_XML2
3431 static void handle_http(ZOOM_connection c, Z_HTTP_Response *hres)
3432 {
3433     int ret = -1;
3434     const char *content_type = z_HTTP_header_lookup(hres->headers,
3435                                                     "Content-Type");
3436     const char *connection_head = z_HTTP_header_lookup(hres->headers,
3437                                                        "Connection");
3438     c->mask = 0;
3439     yaz_log(log_details, "%p handle_http", c);
3440
3441     if (content_type && !yaz_strcmp_del("text/xml", content_type, "; "))
3442     {
3443         Z_SOAP *soap_package = 0;
3444         ODR o = c->odr_in;
3445         Z_SOAP_Handler soap_handlers[2] = {
3446             {"http://www.loc.gov/zing/srw/", 0,
3447              (Z_SOAP_fun) yaz_srw_codec},
3448             {0, 0, 0}
3449         };
3450         ret = z_soap_codec(o, &soap_package,
3451                            &hres->content_buf, &hres->content_len,
3452                            soap_handlers);
3453         if (!ret && soap_package->which == Z_SOAP_generic &&
3454             soap_package->u.generic->no == 0)
3455         {
3456             Z_SRW_PDU *sr = (Z_SRW_PDU*) soap_package->u.generic->p;
3457             if (sr->which == Z_SRW_searchRetrieve_response)
3458                 handle_srw_response(c, sr->u.response);
3459             else
3460                 ret = -1;
3461         }
3462         else if (!ret && (soap_package->which == Z_SOAP_fault
3463                           || soap_package->which == Z_SOAP_error))
3464         {
3465             set_HTTP_error(c, hres->code,
3466                            soap_package->u.fault->fault_code,
3467                            soap_package->u.fault->fault_string);
3468         }
3469         else
3470             ret = -1;
3471     }
3472     if (ret)
3473     {
3474         if (hres->code != 200)
3475             set_HTTP_error(c, hres->code, 0, 0);
3476         else
3477             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3478         do_close (c);
3479     }
3480     ZOOM_connection_remove_task(c);
3481     if (!strcmp(hres->version, "1.0"))
3482     {
3483         /* HTTP 1.0: only if Keep-Alive we stay alive.. */
3484         if (!connection_head || strcmp(connection_head, "Keep-Alive"))
3485             do_close(c);
3486     }
3487     else
3488     {
3489         /* HTTP 1.1: only if no close we stay alive .. */
3490         if (connection_head && !strcmp(connection_head, "close"))
3491             do_close(c);
3492     }
3493 }
3494 #endif
3495
3496 static int do_read (ZOOM_connection c)
3497 {
3498     int r, more;
3499     ZOOM_Event event;
3500
3501     event = ZOOM_Event_create (ZOOM_EVENT_RECV_DATA);
3502     ZOOM_connection_put_event (c, event);
3503
3504     r = cs_get (c->cs, &c->buf_in, &c->len_in);
3505     more = cs_more(c->cs);
3506     yaz_log(log_details, "%p do_read len=%d more=%d", c, r, more);
3507     if (r == 1)
3508         return 0;
3509     if (r <= 0)
3510     {
3511         if (c->reconnect_ok)
3512         {
3513             do_close (c);
3514             c->reconnect_ok = 0;
3515             yaz_log(log_details, "%p do_read reconnect read", c);
3516             c->tasks->running = 0;
3517             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3518         }
3519         else
3520         {
3521             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3522             do_close (c);
3523         }
3524     }
3525     else
3526     {
3527         Z_GDU *gdu;
3528         ZOOM_Event event;
3529
3530         odr_reset (c->odr_in);
3531         odr_setbuf (c->odr_in, c->buf_in, r, 0);
3532         event = ZOOM_Event_create (ZOOM_EVENT_RECV_APDU);
3533         ZOOM_connection_put_event (c, event);
3534
3535         if (!z_GDU (c->odr_in, &gdu, 0, 0))
3536         {
3537             int x;
3538             int err = odr_geterrorx(c->odr_in, &x);
3539             char msg[60];
3540             const char *element = odr_getelement(c->odr_in);
3541             sprintf (msg, "ODR code %d:%d element=%-20s",
3542                      err, x, element ? element : "<unknown>");
3543             set_ZOOM_error(c, ZOOM_ERROR_DECODE, msg);
3544             do_close (c);
3545         }
3546         else if (gdu->which == Z_GDU_Z3950)
3547             recv_apdu (c, gdu->u.z3950);
3548         else if (gdu->which == Z_GDU_HTTP_Response)
3549         {
3550 #if HAVE_XML2
3551             handle_http (c, gdu->u.HTTP_Response);
3552 #else
3553             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3554             do_close (c);
3555 #endif
3556         }
3557         c->reconnect_ok = 0;
3558     }
3559     return 1;
3560 }
3561
3562 static zoom_ret do_write_ex (ZOOM_connection c, char *buf_out, int len_out)
3563 {
3564     int r;
3565     ZOOM_Event event;
3566
3567     event = ZOOM_Event_create(ZOOM_EVENT_SEND_DATA);
3568     ZOOM_connection_put_event (c, event);
3569
3570     yaz_log(log_details, "%p do_write_ex len=%d", c, len_out);
3571     if ((r = cs_put(c->cs, buf_out, len_out)) < 0)
3572     {
3573         yaz_log(log_details, "%p do_write_ex write failed", c);
3574         if (c->reconnect_ok)
3575         {
3576             do_close (c);
3577             c->reconnect_ok = 0;
3578             yaz_log(log_details, "%p do_write_ex reconnect write", c);
3579             c->tasks->running = 0;
3580             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3581             return zoom_pending;
3582         }
3583         if (c->state == STATE_CONNECTING)
3584             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3585         else
3586             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3587         do_close (c);
3588         return zoom_complete;
3589     }
3590     else if (r == 1)
3591     {
3592         c->mask = ZOOM_SELECT_EXCEPT;
3593         if (c->cs->io_pending & CS_WANT_WRITE)
3594             c->mask += ZOOM_SELECT_WRITE;
3595         if (c->cs->io_pending & CS_WANT_READ)
3596             c->mask += ZOOM_SELECT_READ;
3597         yaz_log(log_details, "%p do_write_ex write incomplete mask=%d",
3598                 c, c->mask);
3599     }
3600     else
3601     {
3602         c->mask = ZOOM_SELECT_READ|ZOOM_SELECT_EXCEPT;
3603         yaz_log(log_details, "%p do_write_ex write complete mask=%d",
3604                 c, c->mask);
3605     }
3606     return zoom_pending;
3607 }
3608
3609 static zoom_ret do_write(ZOOM_connection c)
3610 {
3611     return do_write_ex (c, c->buf_out, c->len_out);
3612 }
3613
3614
3615 ZOOM_API(const char *)
3616 ZOOM_connection_option_get (ZOOM_connection c, const char *key)
3617 {
3618     return ZOOM_options_get (c->options, key);
3619 }
3620
3621 ZOOM_API(const char *)
3622 ZOOM_connection_option_getl (ZOOM_connection c, const char *key, int *lenp)
3623 {
3624     return ZOOM_options_getl (c->options, key, lenp);
3625 }
3626
3627 ZOOM_API(void)
3628 ZOOM_connection_option_set (ZOOM_connection c, const char *key,
3629                             const char *val)
3630 {
3631     ZOOM_options_set (c->options, key, val);
3632 }
3633
3634 ZOOM_API(void)
3635 ZOOM_connection_option_setl (ZOOM_connection c, const char *key,
3636                              const char *val, int len)
3637 {
3638     ZOOM_options_setl (c->options, key, val, len);
3639 }
3640
3641 ZOOM_API(const char *)
3642 ZOOM_resultset_option_get (ZOOM_resultset r, const char *key)
3643 {
3644     return ZOOM_options_get (r->options, key);
3645 }
3646
3647 ZOOM_API(void)
3648 ZOOM_resultset_option_set (ZOOM_resultset r, const char *key,
3649                                   const char *val)
3650 {
3651     ZOOM_options_set (r->options, key, val);
3652 }
3653
3654
3655 ZOOM_API(int)
3656 ZOOM_connection_errcode (ZOOM_connection c)
3657 {
3658     return ZOOM_connection_error (c, 0, 0);
3659 }
3660
3661 ZOOM_API(const char *)
3662 ZOOM_connection_errmsg (ZOOM_connection c)
3663 {
3664     const char *msg;
3665     ZOOM_connection_error (c, &msg, 0);
3666     return msg;
3667 }
3668
3669 ZOOM_API(const char *)
3670 ZOOM_connection_addinfo (ZOOM_connection c)
3671 {
3672     const char *addinfo;
3673     ZOOM_connection_error (c, 0, &addinfo);
3674     return addinfo;
3675 }
3676
3677 ZOOM_API(const char *)
3678 ZOOM_connection_diagset (ZOOM_connection c)
3679 {
3680     const char *diagset;
3681     ZOOM_connection_error_x (c, 0, 0, &diagset);
3682     return diagset;
3683 }
3684
3685 ZOOM_API(const char *)
3686 ZOOM_diag_str (int error)
3687 {
3688     switch (error)
3689     {
3690     case ZOOM_ERROR_NONE:
3691         return "No error";
3692     case ZOOM_ERROR_CONNECT:
3693         return "Connect failed";
3694     case ZOOM_ERROR_MEMORY:
3695         return "Out of memory";
3696     case ZOOM_ERROR_ENCODE:
3697         return "Encoding failed";
3698     case ZOOM_ERROR_DECODE:
3699         return "Decoding failed";
3700     case ZOOM_ERROR_CONNECTION_LOST:
3701         return "Connection lost";
3702     case ZOOM_ERROR_INIT:
3703         return "Init rejected";
3704     case ZOOM_ERROR_INTERNAL:
3705         return "Internal failure";
3706     case ZOOM_ERROR_TIMEOUT:
3707         return "Timeout";
3708     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
3709         return "Unsupported protocol";
3710     case ZOOM_ERROR_UNSUPPORTED_QUERY:
3711         return "Unsupported query type";
3712     case ZOOM_ERROR_INVALID_QUERY:
3713         return "Invalid query";
3714     case ZOOM_ERROR_CQL_PARSE:
3715         return "CQL parsing error";
3716     case ZOOM_ERROR_CQL_TRANSFORM:
3717         return "CQL transformation error";
3718     default:
3719         return diagbib1_str (error);
3720     }
3721 }
3722
3723 ZOOM_API(int)
3724 ZOOM_connection_error_x (ZOOM_connection c, const char **cp,
3725                          const char **addinfo, const char **diagset)
3726 {
3727     int error = c->error;
3728     if (cp)
3729     {
3730         if (!c->diagset || !strcmp(c->diagset, "ZOOM"))
3731             *cp = ZOOM_diag_str(error);
3732         else if (!strcmp(c->diagset, "HTTP"))
3733             *cp = z_HTTP_errmsg(c->error);
3734         else if (!strcmp(c->diagset, "Bib-1"))
3735             *cp = ZOOM_diag_str(error);
3736         else if (!strcmp(c->diagset, "info:srw/diagnostic/1"))
3737             *cp = yaz_diag_srw_str(c->error);
3738         else
3739             *cp = "Unknown error and diagnostic set";
3740     }
3741     if (addinfo)
3742         *addinfo = c->addinfo ? c->addinfo : "";
3743     if (diagset)
3744         *diagset = c->diagset ? c->diagset : "";
3745     return c->error;
3746 }
3747
3748 ZOOM_API(int)
3749 ZOOM_connection_error (ZOOM_connection c, const char **cp,
3750                        const char **addinfo)
3751 {
3752     return ZOOM_connection_error_x(c, cp, addinfo, 0);
3753 }
3754
3755 static int ZOOM_connection_do_io(ZOOM_connection c, int mask)
3756 {
3757     ZOOM_Event event = 0;
3758     int r = cs_look(c->cs);
3759     yaz_log(log_details, "%p ZOOM_connection_do_io mask=%d cs_look=%d",
3760              c, mask, r);
3761
3762     if (r == CS_NONE)
3763     {
3764         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
3765         set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3766         do_close (c);
3767         ZOOM_connection_put_event (c, event);
3768     }
3769     else if (r == CS_CONNECT)
3770     {
3771         int ret;
3772         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
3773
3774         ret = cs_rcvconnect (c->cs);
3775         yaz_log(log_details, "%p ZOOM_connection_do_io "
3776                 "cs_rcvconnect returned %d", c, ret);
3777         if (ret == 1)
3778         {
3779             c->mask = ZOOM_SELECT_EXCEPT;
3780             if (c->cs->io_pending & CS_WANT_WRITE)
3781                 c->mask += ZOOM_SELECT_WRITE;
3782             if (c->cs->io_pending & CS_WANT_READ)
3783                 c->mask += ZOOM_SELECT_READ;
3784             ZOOM_connection_put_event (c, event);
3785         }
3786         else if (ret == 0)
3787         {
3788             ZOOM_connection_put_event (c, event);
3789             get_cert(c);
3790             if (c->proto == PROTO_Z3950)
3791                 ZOOM_connection_send_init(c);
3792             else
3793             {
3794                 /* no init request for SRW .. */
3795                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
3796                 ZOOM_connection_remove_task (c);
3797                 c->mask = 0;
3798                 ZOOM_connection_exec_task (c);
3799             }
3800             c->state = STATE_ESTABLISHED;
3801         }
3802         else
3803         {
3804             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3805             do_close (c);
3806             ZOOM_connection_put_event (c, event);
3807         }
3808     }
3809     else
3810     {
3811         if (mask & ZOOM_SELECT_READ)
3812             do_read (c);
3813         if (c->cs && (mask & ZOOM_SELECT_WRITE))
3814             do_write (c);
3815     }
3816     return 1;
3817 }
3818
3819 ZOOM_API(int)
3820 ZOOM_connection_last_event(ZOOM_connection cs)
3821 {
3822     if (!cs)
3823         return ZOOM_EVENT_NONE;
3824     return cs->last_event;
3825 }
3826
3827 ZOOM_API(int)
3828 ZOOM_event (int no, ZOOM_connection *cs)
3829 {
3830     int timeout = 30;      /* default timeout in seconds */
3831     int timeout_set = 0;   /* whether it was overriden at all */
3832 #if HAVE_SYS_POLL_H
3833     struct pollfd pollfds[1024];
3834     ZOOM_connection poll_cs[1024];
3835 #else
3836     struct timeval tv;
3837     fd_set input, output, except;
3838 #endif
3839     int i, r, nfds;
3840     int max_fd = 0;
3841
3842     for (i = 0; i<no; i++)
3843     {
3844         ZOOM_connection c = cs[i];
3845         ZOOM_Event event;
3846         if (c && (event = ZOOM_connection_get_event(c)))
3847         {
3848             ZOOM_Event_destroy (event);
3849             return i+1;
3850         }
3851     }
3852     for (i = 0; i<no; i++)
3853     {
3854         ZOOM_connection c = cs[i];
3855         ZOOM_Event event;
3856         if (c && ZOOM_connection_exec_task (c))
3857         {
3858             if ((event = ZOOM_connection_get_event(c)))
3859             {
3860                 ZOOM_Event_destroy (event);
3861                 return i+1;
3862             }
3863         }
3864     }
3865 #if HAVE_SYS_POLL_H
3866
3867 #else
3868     FD_ZERO (&input);
3869     FD_ZERO (&output);
3870     FD_ZERO (&except);
3871 #endif
3872     nfds = 0;
3873     for (i = 0; i<no; i++)
3874     {
3875         ZOOM_connection c = cs[i];
3876         int fd, mask;
3877         int this_timeout;
3878
3879         if (!c)
3880             continue;
3881         fd = z3950_connection_socket(c);
3882         mask = z3950_connection_mask(c);
3883
3884         if (fd == -1)
3885             continue;
3886         if (max_fd < fd)
3887             max_fd = fd;
3888
3889         /* -1 is used for indefinite timeout (no timeout), so -2 here. */
3890         this_timeout = ZOOM_options_get_int (c->options, "timeout", -2);
3891         if (this_timeout != -2)
3892         {
3893             /* ensure the minimum timeout is used */
3894             if (!timeout_set)
3895                 timeout = this_timeout;
3896             else if (this_timeout != -1 && this_timeout < timeout)
3897                 timeout = this_timeout;
3898             timeout_set = 1;
3899         }
3900 #if HAVE_SYS_POLL_H
3901         if (mask)
3902         {
3903             short poll_events = 0;
3904
3905             if (mask & ZOOM_SELECT_READ)
3906                 poll_events += POLLIN;
3907             if (mask & ZOOM_SELECT_WRITE)
3908                 poll_events += POLLOUT;
3909             if (mask & ZOOM_SELECT_EXCEPT)
3910                 poll_events += POLLERR;
3911             pollfds[nfds].fd = fd;
3912             pollfds[nfds].events = poll_events;
3913             pollfds[nfds].revents = 0;
3914             poll_cs[nfds] = c;
3915             nfds++;
3916         }
3917 #else
3918         if (mask & ZOOM_SELECT_READ)
3919         {
3920             FD_SET (fd, &input);
3921             nfds++;
3922         }
3923         if (mask & ZOOM_SELECT_WRITE)
3924         {
3925             FD_SET (fd, &output);
3926             nfds++;
3927         }
3928         if (mask & ZOOM_SELECT_EXCEPT)
3929         {
3930             FD_SET (fd, &except);
3931             nfds++;
3932         }
3933 #endif
3934     }
3935     if (!nfds)
3936         return 0;
3937
3938 #if HAVE_SYS_POLL_H
3939     r = poll (pollfds, nfds, (timeout == -1 ? -1 : timeout * 1000));
3940     for (i = 0; i<nfds; i++)
3941     {
3942         ZOOM_connection c = poll_cs[i];
3943         if (r && c->mask)
3944         {
3945             int mask = 0;
3946             if (pollfds[i].revents & POLLIN)
3947                 mask += ZOOM_SELECT_READ;
3948             if (pollfds[i].revents & POLLOUT)
3949                 mask += ZOOM_SELECT_WRITE;
3950             if (pollfds[i].revents & POLLERR)
3951                 mask += ZOOM_SELECT_EXCEPT;
3952             if (mask)
3953                 ZOOM_connection_do_io(c, mask);
3954         }
3955         else if (r == 0 && c->mask)
3956         {
3957             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
3958             /* timeout and this connection was waiting */
3959             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
3960             do_close (c);
3961             ZOOM_connection_put_event(c, event);
3962         }
3963     }
3964 #else
3965     tv.tv_sec = timeout;
3966     tv.tv_usec = 0;
3967     r = select (max_fd+1, &input, &output, &except, (timeout == -1 ? 0 : &tv));
3968     for (i = 0; i<no; i++)
3969     {
3970         ZOOM_connection c = cs[i];
3971         int fd, mask;
3972
3973         if (!c)
3974             continue;
3975         fd = z3950_connection_socket(c);
3976         mask = 0;
3977         if (r && c->mask)
3978         {
3979             /* no timeout and real socket */
3980             if (FD_ISSET(fd, &input))
3981                 mask += ZOOM_SELECT_READ;
3982             if (FD_ISSET(fd, &output))
3983                 mask += ZOOM_SELECT_WRITE;
3984             if (FD_ISSET(fd, &except))
3985                 mask += ZOOM_SELECT_EXCEPT;
3986             if (mask)
3987                 ZOOM_connection_do_io(c, mask);
3988         }
3989         if (r == 0 && c->mask)
3990         {
3991             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
3992             /* timeout and this connection was waiting */
3993             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
3994             do_close (c);
3995             ZOOM_connection_put_event(c, event);
3996         }
3997     }
3998 #endif
3999     for (i = 0; i<no; i++)
4000     {
4001         ZOOM_connection c = cs[i];
4002         ZOOM_Event event;
4003         if (c && (event = ZOOM_connection_get_event(c)))
4004         {
4005             ZOOM_Event_destroy (event);
4006             return i+1;
4007         }
4008     }
4009     return 0;
4010 }
4011
4012
4013 /*
4014  * Returns an xmalloc()d string containing RPN that corresponds to the
4015  * CQL passed in.  On error, sets the Connection object's error state
4016  * and returns a null pointer.
4017  * ### We could cache CQL parser and/or transformer in Connection.
4018  */
4019 static char *cql2pqf(ZOOM_connection c, const char *cql)
4020 {
4021     CQL_parser parser;
4022     int error;
4023     struct cql_node *node;
4024     const char *cqlfile;
4025     static cql_transform_t trans;
4026     char pqfbuf[512];
4027
4028     parser = cql_parser_create();
4029     if ((error = cql_parser_string(parser, cql)) != 0) {
4030         cql_parser_destroy(parser);
4031         set_ZOOM_error(c, ZOOM_ERROR_CQL_PARSE, cql);
4032         return 0;
4033     }
4034
4035     node = cql_parser_result(parser);
4036     /* ### Do not call cql_parser_destroy() yet: it destroys `node'! */
4037
4038     cqlfile = ZOOM_connection_option_get(c, "cqlfile");
4039     if (cqlfile == 0) {
4040         cql_parser_destroy(parser);
4041         cql_node_destroy(node);
4042         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, "no CQL transform file");
4043         return 0;
4044     }
4045
4046     if ((trans = cql_transform_open_fname(cqlfile)) == 0) {
4047         char buf[512];
4048         cql_parser_destroy(parser);
4049         cql_node_destroy(node);
4050         sprintf(buf, "can't open CQL transform file '%.200s': %.200s",
4051                 cqlfile, strerror(errno));
4052         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4053         return 0;
4054     }
4055
4056     error = cql_transform_buf(trans, node, pqfbuf, sizeof pqfbuf);
4057     cql_parser_destroy(parser);
4058     cql_node_destroy(node);
4059     if (error != 0) {
4060         char buf[512];
4061         const char *addinfo;
4062         error = cql_transform_error(trans, &addinfo);
4063         cql_transform_close(trans);
4064         sprintf(buf, "%.200s (addinfo=%.200s)", cql_strerror(error), addinfo);
4065         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4066         return 0;
4067     }
4068
4069     cql_transform_close(trans);
4070     return xstrdup(pqfbuf);
4071 }
4072
4073
4074 /*
4075  * Local variables:
4076  * c-basic-offset: 4
4077  * indent-tabs-mode: nil
4078  * End:
4079  * vim: shiftwidth=4 tabstop=8 expandtab
4080  */
4081