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 1.40 2005-05-02 19:33:55 adam Exp $
   6  */
   7 /**
   8  * \file zoom-c.c
   9  * \brief Implements ZOOM C interface.
  10  */
  11
  12 #include <assert.h>
  13 #include <string.h>
  14 #include "zoom-p.h"
  15
  16 #include <yaz/yaz-util.h>
  17 #include <yaz/xmalloc.h>
  18 #include <yaz/otherinfo.h>
  19 #include <yaz/log.h>
  20 #include <yaz/pquery.h>
  21 #include <yaz/marcdisp.h>
  22 #include <yaz/diagbib1.h>
  23 #include <yaz/charneg.h>
  24 #include <yaz/ill.h>
  25 #include <yaz/srw.h>
  26
  27 #if HAVE_SYS_TYPES_H
  28 #include <sys/types.h>
  29 #endif
  30 #if HAVE_SYS_TIME_H
  31 #include <sys/time.h>
  32 #endif
  33 #if HAVE_SYS_POLL_H
  34 #include <sys/poll.h>
  35 #endif
  36 #if HAVE_SYS_SELECT_H
  37 #include <sys/select.h>
  38 #endif
  39 #ifdef WIN32
  40 #include <winsock.h>
  41 #endif
  42
  43 static int log_level = 0;
  44 static int log_level_initialized = 0;
  45
  46 typedef enum {
  47     zoom_pending,
  48     zoom_complete
  49 } zoom_ret;
  50
  51 static zoom_ret ZOOM_connection_send_init (ZOOM_connection c);
  52 static zoom_ret do_write_ex (ZOOM_connection c, char *buf_out, int len_out);
  53
  54 static ZOOM_Event ZOOM_Event_create (int kind)
  55 {
  56     ZOOM_Event event = (ZOOM_Event) xmalloc (sizeof(*event));
  57     event->kind = kind;
  58     event->next = 0;
  59     event->prev = 0;
  60     return event;
  61 }
  62
  63 static void ZOOM_Event_destroy (ZOOM_Event event)
  64 {
  65     xfree (event);
  66 }
  67
  68 static void ZOOM_connection_put_event (ZOOM_connection c, ZOOM_Event event)
  69 {
  70     if (c->m_queue_back)
  71     {
  72         c->m_queue_back->prev = event;
  73         assert (c->m_queue_front);
  74     }
  75     else
  76     {
  77         assert (!c->m_queue_front);
  78         c->m_queue_front = event;
  79     }
  80     event->next = c->m_queue_back;
  81     event->prev = 0;
  82     c->m_queue_back = event;
  83 }
  84
  85 static ZOOM_Event ZOOM_connection_get_event(ZOOM_connection c)
  86 {
  87     ZOOM_Event event = c->m_queue_front;
  88     if (!event)
  89     {
  90         c->last_event = ZOOM_EVENT_NONE;
  91         return 0;
  92     }
  93     assert (c->m_queue_back);
  94     c->m_queue_front = event->prev;
  95     if (c->m_queue_front)
  96     {
  97         assert (c->m_queue_back);
  98         c->m_queue_front->next = 0;
  99     }
 100     else
 101         c->m_queue_back = 0;
 102     c->last_event = event->kind;
 103     return event;
 104 }
 105
 106
 107 static void set_dset_error (ZOOM_connection c, int error,
 108                             const char *dset,
 109                             const char *addinfo, const char *addinfo2)
 110 {
 111     char *cp;
 112     if (!log_level_initialized)
 113     {
 114         log_level = yaz_log_module_level("zoom");
 115         log_level_initialized = 1;
 116     }
 117
 118     xfree (c->addinfo);
 119     c->addinfo = 0;
 120     c->error = error;
 121     if (!c->diagset || strcmp(dset, c->diagset))
 122     {
 123         xfree(c->diagset);
 124         c->diagset = xstrdup(dset);
 125         /* remove integer part from SRW diagset .. */
 126         if ((cp = strrchr(c->diagset, '/')))
 127            *cp = '\0';
 128     }
 129     if (addinfo && addinfo2)
 130     {
 131         c->addinfo = (char*) xmalloc(strlen(addinfo) + strlen(addinfo2) + 2);
 132         strcpy(c->addinfo, addinfo);
 133         strcat(c->addinfo, addinfo2);
 134     }
 135     else if (addinfo)
 136         c->addinfo = xstrdup(addinfo);
 137     if (error)
 138         yaz_log(log_level, "Error %s %s:%d %s %s",
 139                 c->host_port ? c->host_port : "<>", dset, error,
 140                 addinfo ? addinfo : "",
 141                 addinfo2 ? addinfo2 : "");
 142 }
 143
 144 #if HAVE_XML2
 145 static void set_HTTP_error (ZOOM_connection c, int error,
 146                             const char *addinfo, const char *addinfo2)
 147 {
 148     set_dset_error(c, error, "HTTP", addinfo, addinfo2);
 149 }
 150 #endif
 151
 152 static void set_ZOOM_error (ZOOM_connection c, int error,
 153                             const char *addinfo)
 154 {
 155     set_dset_error(c, error, "ZOOM", addinfo, 0);
 156 }
 157
 158 static void clear_error (ZOOM_connection c)
 159 {
 160
 161     switch (c->error)
 162     {
 163     case ZOOM_ERROR_CONNECT:
 164     case ZOOM_ERROR_MEMORY:
 165     case ZOOM_ERROR_DECODE:
 166     case ZOOM_ERROR_CONNECTION_LOST:
 167     case ZOOM_ERROR_INIT:
 168     case ZOOM_ERROR_INTERNAL:
 169     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
 170         break;
 171     default:
 172         set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 173     }
 174 }
 175
 176 ZOOM_task ZOOM_connection_add_task (ZOOM_connection c, int which)
 177 {
 178     ZOOM_task *taskp = &c->tasks;
 179     while (*taskp)
 180         taskp = &(*taskp)->next;
 181     *taskp = (ZOOM_task) xmalloc (sizeof(**taskp));
 182     (*taskp)->running = 0;
 183     (*taskp)->which = which;
 184     (*taskp)->next = 0;
 185     clear_error (c);
 186     return *taskp;
 187 }
 188
 189 ZOOM_task ZOOM_connection_insert_task (ZOOM_connection c, int which)
 190 {
 191     ZOOM_task task = (ZOOM_task) xmalloc (sizeof(*task));
 192
 193     task->next = c->tasks;
 194     c->tasks = task;
 195
 196     task->running = 0;
 197     task->which = which;
 198     clear_error (c);
 199     return task;
 200 }
 201
 202 void ZOOM_connection_remove_task (ZOOM_connection c)
 203 {
 204     ZOOM_task task = c->tasks;
 205
 206     if (task)
 207     {
 208         c->tasks = task->next;
 209         switch (task->which)
 210         {
 211         case ZOOM_TASK_SEARCH:
 212             ZOOM_resultset_destroy (task->u.search.resultset);
 213             break;
 214         case ZOOM_TASK_RETRIEVE:
 215             ZOOM_resultset_destroy (task->u.retrieve.resultset);
 216             break;
 217         case ZOOM_TASK_CONNECT:
 218             break;
 219         case ZOOM_TASK_SCAN:
 220             ZOOM_scanset_destroy (task->u.scan.scan);
 221             break;
 222         case ZOOM_TASK_PACKAGE:
 223             ZOOM_package_destroy (task->u.package);
 224             break;
 225         case ZOOM_TASK_SORT:
 226             ZOOM_resultset_destroy (task->u.sort.resultset);
 227             ZOOM_query_destroy(task->u.sort.q);
 228             break;
 229         default:
 230             assert (0);
 231         }
 232         xfree (task);
 233     }
 234 }
 235
 236 static int ZOOM_connection_exec_task (ZOOM_connection c);
 237
 238 void ZOOM_connection_remove_tasks (ZOOM_connection c)
 239 {
 240     while (c->tasks)
 241         ZOOM_connection_remove_task(c);
 242 }
 243
 244 static ZOOM_record record_cache_lookup (ZOOM_resultset r, int pos);
 245
 246 ZOOM_API(ZOOM_connection)
 247 ZOOM_connection_create (ZOOM_options options)
 248 {
 249     ZOOM_connection c = (ZOOM_connection) xmalloc (sizeof(*c));
 250
 251     if (!log_level_initialized)
 252     {
 253         log_level = yaz_log_module_level("zoom");
 254         log_level_initialized = 1;
 255     }
 256
 257     c->proto = PROTO_Z3950;
 258     c->cs = 0;
 259     c->mask = 0;
 260     c->reconnect_ok = 0;
 261     c->state = STATE_IDLE;
 262     c->addinfo = 0;
 263     c->diagset = 0;
 264     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 265     c->buf_in = 0;
 266     c->len_in = 0;
 267     c->buf_out = 0;
 268     c->len_out = 0;
 269     c->resultsets = 0;
 270
 271     c->options = ZOOM_options_create_with_parent(options);
 272
 273     c->host_port = 0;
 274     c->path = 0;
 275     c->proxy = 0;
 276
 277     c->charset = c->lang = 0;
 278
 279     c->cookie_out = 0;
 280     c->cookie_in = 0;
 281     c->client_IP = 0;
 282     c->tasks = 0;
 283
 284     c->odr_in = odr_createmem (ODR_DECODE);
 285     c->odr_out = odr_createmem (ODR_ENCODE);
 286
 287     c->async = 0;
 288     c->support_named_resultsets = 0;
 289     c->last_event = ZOOM_EVENT_NONE;
 290
 291     c->m_queue_front = 0;
 292     c->m_queue_back = 0;
 293     return c;
 294 }
 295
 296 /* set database names. Take local databases (if set); otherwise
 297    take databases given in ZURL (if set); otherwise use Default */
 298 static char **set_DatabaseNames (ZOOM_connection con, ZOOM_options options,
 299                                  int *num)
 300 {
 301     char **databaseNames;
 302     const char *cp = ZOOM_options_get (options, "databaseName");
 303
 304     if (!cp || !*cp)
 305     {
 306         if (strncmp (con->host_port, "unix:", 5) == 0)
 307             cp = strchr(con->host_port+5, ':');
 308         else
 309             cp = strchr(con->host_port, '/');
 310         if (cp)
 311             cp++;
 312     }
 313     if (!cp)
 314         cp = "Default";
 315     nmem_strsplit(con->odr_out->mem, "+", cp,  &databaseNames, num);
 316     return databaseNames;
 317 }
 318
 319 ZOOM_API(ZOOM_connection)
 320 ZOOM_connection_new (const char *host, int portnum)
 321 {
 322     ZOOM_connection c = ZOOM_connection_create (0);
 323
 324     ZOOM_connection_connect (c, host, portnum);
 325     return c;
 326 }
 327
 328 ZOOM_API(void)
 329 ZOOM_connection_connect(ZOOM_connection c,
 330                         const char *host, int portnum)
 331 {
 332     const char *val;
 333     ZOOM_task task;
 334
 335     if (!log_level_initialized)
 336     {
 337         log_level = yaz_log_module_level("zoom");
 338         log_level_initialized = 1;
 339     }
 340
 341     if (c->cs)
 342     {
 343         yaz_log (log_level, "reconnect");
 344         c->reconnect_ok = 1;
 345         return;
 346     }
 347     yaz_log(log_level, "connect");
 348     xfree (c->proxy);
 349     val = ZOOM_options_get (c->options, "proxy");
 350     if (val && *val)
 351         c->proxy = xstrdup (val);
 352     else
 353         c->proxy = 0;
 354
 355     xfree (c->charset);
 356     val = ZOOM_options_get (c->options, "charset");
 357     if (val && *val)
 358         c->charset = xstrdup (val);
 359     else
 360         c->charset = 0;
 361
 362     xfree (c->lang);
 363     val = ZOOM_options_get (c->options, "lang");
 364     if (val && *val)
 365         c->lang = xstrdup (val);
 366     else
 367         c->lang = 0;
 368
 369     xfree (c->host_port);
 370     if (portnum)
 371     {
 372         char hostn[128];
 373         sprintf (hostn, "%.80s:%d", host, portnum);
 374         c->host_port = xstrdup(hostn);
 375     }
 376     else
 377         c->host_port = xstrdup(host);
 378
 379     ZOOM_options_set(c->options, "host", c->host_port);
 380
 381     val = ZOOM_options_get (c->options, "cookie");
 382     if (val && *val)
 383         c->cookie_out = xstrdup (val);
 384
 385     val = ZOOM_options_get (c->options, "clientIP");
 386     if (val && *val)
 387         c->client_IP = xstrdup (val);
 388
 389     c->async = ZOOM_options_get_bool (c->options, "async", 0);
 390
 391     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 392
 393     task = ZOOM_connection_add_task (c, ZOOM_TASK_CONNECT);
 394
 395     if (!c->async)
 396     {
 397         while (ZOOM_event (1, &c))
 398             ;
 399     }
 400 }
 401
 402 ZOOM_API(ZOOM_query)
 403 ZOOM_query_create(void)
 404 {
 405     ZOOM_query s = (ZOOM_query) xmalloc (sizeof(*s));
 406
 407     s->refcount = 1;
 408     s->z_query = 0;
 409     s->sort_spec = 0;
 410     s->odr = odr_createmem (ODR_ENCODE);
 411     s->query_string = 0;
 412
 413     return s;
 414 }
 415
 416 ZOOM_API(void)
 417 ZOOM_query_destroy(ZOOM_query s)
 418 {
 419     if (!s)
 420         return;
 421
 422     (s->refcount)--;
 423     yaz_log (log_level, "ZOOM_query_destroy count=%d", s->refcount);
 424     if (s->refcount == 0)
 425     {
 426         odr_destroy (s->odr);
 427         xfree (s);
 428     }
 429 }
 430
 431 ZOOM_API(int)
 432 ZOOM_query_prefix(ZOOM_query s, const char *str)
 433 {
 434     s->query_string = odr_strdup(s->odr, str);
 435     s->z_query = (Z_Query *) odr_malloc (s->odr, sizeof(*s->z_query));
 436     s->z_query->which = Z_Query_type_1;
 437     s->z_query->u.type_1 =  p_query_rpn(s->odr, PROTO_Z3950, str);
 438     if (!s->z_query->u.type_1)
 439     {
 440         s->z_query = 0;
 441         return -1;
 442     }
 443     return 0;
 444 }
 445
 446 ZOOM_API(int)
 447 ZOOM_query_cql(ZOOM_query s, const char *str)
 448 {
 449     Z_External *ext;
 450
 451     s->query_string = odr_strdup(s->odr, str);
 452
 453     ext = (Z_External *) odr_malloc(s->odr, sizeof(*ext));
 454     ext->direct_reference = odr_getoidbystr(s->odr, "1.2.840.10003.16.2");
 455     ext->indirect_reference = 0;
 456     ext->descriptor = 0;
 457     ext->which = Z_External_CQL;
 458     ext->u.cql = s->query_string;
 459
 460     s->z_query = (Z_Query *) odr_malloc (s->odr, sizeof(*s->z_query));
 461     s->z_query->which = Z_Query_type_104;
 462     s->z_query->u.type_104 =  ext;
 463
 464     return 0;
 465 }
 466
 467 ZOOM_API(int)
 468 ZOOM_query_sortby(ZOOM_query s, const char *criteria)
 469 {
 470     s->sort_spec = yaz_sort_spec (s->odr, criteria);
 471     if (!s->sort_spec)
 472         return -1;
 473     return 0;
 474 }
 475
 476 static zoom_ret do_write(ZOOM_connection c);
 477
 478 ZOOM_API(void)
 479 ZOOM_connection_destroy(ZOOM_connection c)
 480 {
 481     ZOOM_resultset r;
 482     if (!c)
 483         return;
 484     if (c->cs)
 485         cs_close (c->cs);
 486     for (r = c->resultsets; r; r = r->next)
 487         r->connection = 0;
 488
 489     xfree (c->buf_in);
 490     xfree (c->addinfo);
 491     xfree (c->diagset);
 492     odr_destroy (c->odr_in);
 493     odr_destroy (c->odr_out);
 494     ZOOM_options_destroy (c->options);
 495     ZOOM_connection_remove_tasks (c);
 496     xfree (c->host_port);
 497     xfree (c->path);
 498     xfree (c->proxy);
 499     xfree (c->charset);
 500     xfree (c->lang);
 501     xfree (c->cookie_out);
 502     xfree (c->cookie_in);
 503     xfree (c->client_IP);
 504     xfree (c);
 505 }
 506
 507 void ZOOM_resultset_addref (ZOOM_resultset r)
 508 {
 509     if (r)
 510     {
 511         (r->refcount)++;
 512         yaz_log (log_level, "ZOOM_resultset_addref r=%p count=%d",
 513                  r, r->refcount);
 514     }
 515 }
 516
 517 ZOOM_resultset ZOOM_resultset_create ()
 518 {
 519     ZOOM_resultset r = (ZOOM_resultset) xmalloc (sizeof(*r));
 520
 521     if (!log_level_initialized)
 522     {
 523         log_level = yaz_log_module_level("zoom");
 524         log_level_initialized = 1;
 525     }
 526
 527     yaz_log (log_level, "ZOOM_resultset_create r = %p", r);
 528     r->refcount = 1;
 529     r->size = 0;
 530     r->odr = odr_createmem (ODR_ENCODE);
 531     r->start = 0;
 532     r->piggyback = 1;
 533     r->setname = 0;
 534     r->schema = 0;
 535     r->count = 0;
 536     r->step = 0;
 537     r->record_cache = 0;
 538     r->r_sort_spec = 0;
 539     r->query = 0;
 540     r->connection = 0;
 541     r->next = 0;
 542     return r;
 543 }
 544
 545 ZOOM_API(ZOOM_resultset)
 546 ZOOM_connection_search_pqf(ZOOM_connection c, const char *q)
 547 {
 548     ZOOM_resultset r;
 549     ZOOM_query s = ZOOM_query_create();
 550
 551     ZOOM_query_prefix (s, q);
 552
 553     r = ZOOM_connection_search (c, s);
 554     ZOOM_query_destroy (s);
 555     return r;
 556 }
 557
 558 ZOOM_API(ZOOM_resultset)
 559 ZOOM_connection_search(ZOOM_connection c, ZOOM_query q)
 560 {
 561     ZOOM_resultset r = ZOOM_resultset_create ();
 562     ZOOM_task task;
 563     const char *cp;
 564
 565     r->r_sort_spec = q->sort_spec;
 566     r->query = q;
 567
 568     r->options = ZOOM_options_create_with_parent(c->options);
 569
 570     r->start = ZOOM_options_get_int(r->options, "start", 0);
 571     r->count = ZOOM_options_get_int(r->options, "count", 0);
 572     {
 573         /* If "presentChunk" is defined use that; otherwise "step" */
 574         const char *cp = ZOOM_options_get (r->options, "presentChunk");
 575         r->step = ZOOM_options_get_int(r->options,
 576                                        (cp != 0 ? "presentChunk": "step"), 0);
 577     }
 578     r->piggyback = ZOOM_options_get_bool (r->options, "piggyback", 1);
 579     cp = ZOOM_options_get (r->options, "setname");
 580     if (cp)
 581         r->setname = xstrdup(cp);
 582     cp = ZOOM_options_get (r->options, "schema");
 583     if (cp)
 584         r->schema = xstrdup(cp);
 585
 586     r->connection = c;
 587
 588     r->next = c->resultsets;
 589     c->resultsets = r;
 590
 591     if (c->host_port && c->proto == PROTO_HTTP)
 592     {
 593         if (!c->cs)
 594         {
 595             yaz_log(log_level, "NO COMSTACK");
 596             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 597         }
 598         else
 599         {
 600             yaz_log(log_level, "PREPARE FOR RECONNECT");
 601             c->reconnect_ok = 1;
 602         }
 603     }
 604
 605     task = ZOOM_connection_add_task (c, ZOOM_TASK_SEARCH);
 606     task->u.search.resultset = r;
 607     ZOOM_resultset_addref (r);
 608
 609     (q->refcount)++;
 610
 611     if (!c->async)
 612     {
 613         while (ZOOM_event (1, &c))
 614             ;
 615     }
 616     return r;
 617 }
 618
 619 ZOOM_API(void)
 620     ZOOM_resultset_sort(ZOOM_resultset r,
 621                         const char *sort_type, const char *sort_spec)
 622 {
 623     ZOOM_connection c = r->connection;
 624     ZOOM_task task;
 625
 626     if (!c)
 627         return;
 628
 629     if (c->host_port && c->proto == PROTO_HTTP)
 630     {
 631         if (!c->cs)
 632         {
 633             yaz_log(log_level, "NO COMSTACK");
 634             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 635         }
 636         else
 637         {
 638             yaz_log(log_level, "PREPARE FOR RECONNECT");
 639             c->reconnect_ok = 1;
 640         }
 641     }
 642
 643     ZOOM_resultset_cache_reset(r);
 644     task = ZOOM_connection_add_task (c, ZOOM_TASK_SORT);
 645     task->u.sort.resultset = r;
 646     task->u.sort.q = ZOOM_query_create();
 647     ZOOM_query_sortby(task->u.sort.q, sort_spec);
 648
 649     ZOOM_resultset_addref (r);
 650
 651     if (!c->async)
 652     {
 653         while (ZOOM_event (1, &c))
 654             ;
 655     }
 656 }
 657
 658 ZOOM_API(void)
 659     ZOOM_resultset_cache_reset(ZOOM_resultset r)
 660 {
 661     ZOOM_record_cache rc;
 662
 663     for (rc = r->record_cache; rc; rc = rc->next)
 664     {
 665         if (rc->rec.wrbuf_marc)
 666             wrbuf_free (rc->rec.wrbuf_marc, 1);
 667         if (rc->rec.wrbuf_iconv)
 668             wrbuf_free (rc->rec.wrbuf_iconv, 1);
 669         if (rc->rec.wrbuf_opac)
 670             wrbuf_free (rc->rec.wrbuf_opac, 1);
 671     }
 672     r->record_cache = 0;
 673 }
 674
 675 ZOOM_API(void)
 676 ZOOM_resultset_destroy(ZOOM_resultset r)
 677 {
 678     if (!r)
 679         return;
 680     (r->refcount)--;
 681     yaz_log (log_level, "ZOOM_resultset_destroy r = %p count=%d",
 682              r, r->refcount);
 683     if (r->refcount == 0)
 684     {
 685         ZOOM_resultset_cache_reset(r);
 686
 687         if (r->connection)
 688         {
 689             /* remove ourselves from the resultsets in connection */
 690             ZOOM_resultset *rp = &r->connection->resultsets;
 691             while (1)
 692             {
 693                 assert (*rp);   /* we must be in this list!! */
 694                 if (*rp == r)
 695                 {   /* OK, we're here - take us out of it */
 696                     *rp = (*rp)->next;
 697                     break;
 698                 }
 699                 rp = &(*rp)->next;
 700             }
 701         }
 702         ZOOM_query_destroy (r->query);
 703         ZOOM_options_destroy (r->options);
 704         odr_destroy (r->odr);
 705         xfree (r->setname);
 706         xfree (r->schema);
 707         xfree (r);
 708     }
 709 }
 710
 711 ZOOM_API(size_t)
 712 ZOOM_resultset_size (ZOOM_resultset r)
 713 {
 714     return r->size;
 715 }
 716
 717 static void do_close (ZOOM_connection c)
 718 {
 719     if (c->cs)
 720         cs_close(c->cs);
 721     c->cs = 0;
 722     c->mask = 0;
 723     c->state = STATE_IDLE;
 724 }
 725
 726 static void ZOOM_resultset_retrieve (ZOOM_resultset r,
 727                                      int force_sync, int start, int count)
 728 {
 729     ZOOM_task task;
 730     ZOOM_connection c;
 731     const char *cp;
 732
 733     if (!r)
 734         return;
 735     c = r->connection;
 736     if (!c)
 737         return;
 738
 739     if (c->host_port && c->proto == PROTO_HTTP)
 740     {
 741         if (!c->cs)
 742         {
 743             yaz_log(log_level, "NO COMSTACK");
 744             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 745         }
 746         else
 747         {
 748             yaz_log(log_level, "PREPARE FOR RECONNECT");
 749             c->reconnect_ok = 1;
 750         }
 751     }
 752     task = ZOOM_connection_add_task (c, ZOOM_TASK_RETRIEVE);
 753     task->u.retrieve.resultset = r;
 754     task->u.retrieve.start = start;
 755     task->u.retrieve.count = count;
 756
 757     cp = ZOOM_options_get (r->options, "schema");
 758     if (cp)
 759     {
 760         if (!r->schema || strcmp(r->schema, cp))
 761         {
 762             xfree(r->schema);
 763             r->schema = xstrdup(cp);
 764         }
 765     }
 766
 767     ZOOM_resultset_addref (r);
 768
 769     if (!r->connection->async || force_sync)
 770         while (r->connection && ZOOM_event (1, &r->connection))
 771             ;
 772 }
 773
 774 ZOOM_API(void)
 775 ZOOM_resultset_records (ZOOM_resultset r, ZOOM_record *recs,
 776                         size_t start, size_t count)
 777 {
 778     int force_present = 0;
 779
 780     if (!r)
 781         return ;
 782     if (count && recs)
 783         force_present = 1;
 784     ZOOM_resultset_retrieve (r, force_present, start, count);
 785     if (force_present)
 786     {
 787         size_t i;
 788         for (i = 0; i< count; i++)
 789             recs[i] = ZOOM_resultset_record_immediate (r, i+start);
 790     }
 791 }
 792
 793 static void get_cert(ZOOM_connection c)
 794 {
 795     char *cert_buf;
 796     int cert_len;
 797
 798     if (cs_get_peer_certificate_x509(c->cs, &cert_buf, &cert_len))
 799     {
 800         ZOOM_connection_option_setl(c, "sslPeerCert",
 801                                     cert_buf, cert_len);
 802         xfree(cert_buf);
 803     }
 804 }
 805
 806 static zoom_ret do_connect (ZOOM_connection c)
 807 {
 808     void *add;
 809     const char *effective_host;
 810     if (!log_level_initialized)
 811     {
 812         log_level = yaz_log_module_level("zoom");
 813         log_level_initialized = 1;
 814     }
 815
 816
 817     if (c->proxy)
 818         effective_host = c->proxy;
 819     else
 820         effective_host = c->host_port;
 821
 822     yaz_log (log_level, "do_connect host=%s", effective_host);
 823
 824     if (c->cs)
 825         cs_close(c->cs);
 826     c->cs = cs_create_host (effective_host, 0, &add);
 827
 828     if (c->cs && c->cs->protocol == PROTO_HTTP)
 829     {
 830 #if HAVE_XML2
 831         const char *path = 0;
 832
 833         c->proto = PROTO_HTTP;
 834         cs_get_host_args(c->host_port, &path);
 835         xfree(c->path);
 836         c->path = (char*) xmalloc(strlen(path)+2);
 837         c->path[0] = '/';
 838         strcpy (c->path+1, path);
 839 #else
 840         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_PROTOCOL, "SRW");
 841         do_close(c);
 842         return zoom_complete;
 843 #endif
 844     }
 845     if (c->cs)
 846     {
 847         int ret = cs_connect (c->cs, add);
 848         if (ret == 0)
 849         {
 850             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
 851             ZOOM_connection_put_event(c, event);
 852             get_cert(c);
 853             if (c->proto == PROTO_Z3950)
 854                 ZOOM_connection_send_init(c);
 855             else
 856             {
 857                 /* no init request for SRW .. */
 858                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
 859                 ZOOM_connection_remove_task (c);
 860                 c->mask = 0;
 861                 ZOOM_connection_exec_task (c);
 862             }
 863             c->state = STATE_ESTABLISHED;
 864             return zoom_pending;
 865         }
 866         else if (ret > 0)
 867         {
 868             c->state = STATE_CONNECTING;
 869             c->mask = ZOOM_SELECT_EXCEPT;
 870             if (c->cs->io_pending & CS_WANT_WRITE)
 871                 c->mask += ZOOM_SELECT_WRITE;
 872             if (c->cs->io_pending & CS_WANT_READ)
 873                 c->mask += ZOOM_SELECT_READ;
 874             return zoom_pending;
 875         }
 876     }
 877     c->state = STATE_IDLE;
 878     set_ZOOM_error(c, ZOOM_ERROR_CONNECT, effective_host);
 879     return zoom_complete;
 880 }
 881
 882 int z3950_connection_socket(ZOOM_connection c)
 883 {
 884     if (c->cs)
 885         return cs_fileno(c->cs);
 886     return -1;
 887 }
 888
 889 int z3950_connection_mask(ZOOM_connection c)
 890 {
 891     if (c->cs)
 892         return c->mask;
 893     return 0;
 894 }
 895
 896 static void otherInfo_attach (ZOOM_connection c, Z_APDU *a, ODR out)
 897 {
 898     int i;
 899     for (i = 0; i<200; i++)
 900     {
 901         size_t len;
 902         Z_OtherInformation **oi;
 903         char buf[80];
 904         const char *val;
 905         const char *cp;
 906         int oidval;
 907
 908         sprintf (buf, "otherInfo%d", i);
 909         val = ZOOM_options_get (c->options, buf);
 910         if (!val)
 911             break;
 912         cp = strchr(val, ':');
 913         if (!cp)
 914             continue;
 915         len = cp - val;
 916         if (len >= sizeof(buf))
 917             len = sizeof(buf)-1;
 918         memcpy (buf, val, len);
 919         buf[len] = '\0';
 920         oidval = oid_getvalbyname (buf);
 921         if (oidval == VAL_NONE)
 922             continue;
 923
 924         yaz_oi_APDU(a, &oi);
 925         yaz_oi_set_string_oidval(oi, out, oidval, 1, cp+1);
 926     }
 927 }
 928
 929 static int encode_APDU(ZOOM_connection c, Z_APDU *a, ODR out)
 930 {
 931     assert (a);
 932     if (c->cookie_out)
 933     {
 934         Z_OtherInformation **oi;
 935         yaz_oi_APDU(a, &oi);
 936         yaz_oi_set_string_oidval(oi, out, VAL_COOKIE, 1, c->cookie_out);
 937     }
 938     if (c->client_IP)
 939     {
 940         Z_OtherInformation **oi;
 941         yaz_oi_APDU(a, &oi);
 942         yaz_oi_set_string_oidval(oi, out, VAL_CLIENT_IP, 1, c->client_IP);
 943     }
 944     otherInfo_attach (c, a, out);
 945     if (!z_APDU(out, &a, 0, 0))
 946     {
 947         FILE *outf = fopen("/tmp/apdu.txt", "a");
 948         if (a && outf)
 949         {
 950             ODR odr_pr = odr_createmem(ODR_PRINT);
 951             fprintf (outf, "a=%p\n", a);
 952             odr_setprint(odr_pr, outf);
 953             z_APDU(odr_pr, &a, 0, 0);
 954             odr_destroy(odr_pr);
 955         }
 956         yaz_log (log_level, "encoding failed");
 957         set_ZOOM_error(c, ZOOM_ERROR_ENCODE, 0);
 958         odr_reset(out);
 959         return -1;
 960     }
 961
 962     return 0;
 963 }
 964
 965 static zoom_ret send_APDU (ZOOM_connection c, Z_APDU *a)
 966 {
 967     ZOOM_Event event;
 968     assert (a);
 969     if (encode_APDU(c, a, c->odr_out))
 970         return zoom_complete;
 971     yaz_log(log_level, "send APDU type=%d", a->which);
 972     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
 973     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
 974     ZOOM_connection_put_event (c, event);
 975     odr_reset(c->odr_out);
 976     return do_write (c);
 977 }
 978
 979 /* returns 1 if PDU was sent OK (still pending )
 980            0 if PDU was not sent OK (nothing to wait for)
 981 */
 982
 983 static zoom_ret ZOOM_connection_send_init (ZOOM_connection c)
 984 {
 985     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_initRequest);
 986     Z_InitRequest *ireq = apdu->u.initRequest;
 987     Z_IdAuthentication *auth = (Z_IdAuthentication *)
 988         odr_malloc(c->odr_out, sizeof(*auth));
 989     const char *auth_groupId = ZOOM_options_get (c->options, "group");
 990     const char *auth_userId = ZOOM_options_get (c->options, "user");
 991     const char *auth_password = ZOOM_options_get (c->options, "password");
 992     char *version;
 993
 994     /* support the pass for backwards compatibility */
 995     if (!auth_password)
 996         auth_password = ZOOM_options_get (c->options, "pass");
 997
 998     ODR_MASK_SET(ireq->options, Z_Options_search);
 999     ODR_MASK_SET(ireq->options, Z_Options_present);
1000     ODR_MASK_SET(ireq->options, Z_Options_scan);
1001     ODR_MASK_SET(ireq->options, Z_Options_sort);
1002     ODR_MASK_SET(ireq->options, Z_Options_extendedServices);
1003     ODR_MASK_SET(ireq->options, Z_Options_namedResultSets);
1004
1005     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_1);
1006     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_2);
1007     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_3);
1008
1009     /* Index Data's Z39.50 Implementor Id is 81 */
1010     ireq->implementationId = odr_prepend(c->odr_out,
1011         ZOOM_options_get(c->options, "implementationId"),
1012         odr_prepend(c->odr_out, "81", ireq->implementationId));
1013
1014     ireq->implementationName = odr_prepend(c->odr_out,
1015         ZOOM_options_get(c->options, "implementationName"),
1016         odr_prepend(c->odr_out, "ZOOM-C", ireq->implementationName));
1017
1018     version = odr_strdup(c->odr_out, "$Revision: 1.40 $");
1019     if (strlen(version) > 10)   /* check for unexpanded CVS strings */
1020         version[strlen(version)-2] = '\0';
1021     ireq->implementationVersion = odr_prepend(c->odr_out,
1022         ZOOM_options_get(c->options, "implementationVersion"),
1023         odr_prepend(c->odr_out, &version[11], ireq->implementationVersion));
1024
1025     *ireq->maximumRecordSize =
1026         ZOOM_options_get_int (c->options, "maximumRecordSize", 1024*1024);
1027     *ireq->preferredMessageSize =
1028         ZOOM_options_get_int (c->options, "preferredMessageSize", 1024*1024);
1029
1030     if (auth_groupId || auth_password)
1031     {
1032         Z_IdPass *pass = (Z_IdPass *) odr_malloc(c->odr_out, sizeof(*pass));
1033         int i = 0;
1034         pass->groupId = 0;
1035         if (auth_groupId && *auth_groupId)
1036         {
1037             pass->groupId = (char *)
1038                 odr_malloc(c->odr_out, strlen(auth_groupId)+1);
1039             strcpy(pass->groupId, auth_groupId);
1040             i++;
1041         }
1042         pass->userId = 0;
1043         if (auth_userId && *auth_userId)
1044         {
1045             pass->userId = (char *)
1046                 odr_malloc(c->odr_out, strlen(auth_userId)+1);
1047             strcpy(pass->userId, auth_userId);
1048             i++;
1049         }
1050         pass->password = 0;
1051         if (auth_password && *auth_password)
1052         {
1053             pass->password = (char *)
1054                 odr_malloc(c->odr_out, strlen(auth_password)+1);
1055             strcpy(pass->password, auth_password);
1056             i++;
1057         }
1058         if (i)
1059         {
1060             auth->which = Z_IdAuthentication_idPass;
1061             auth->u.idPass = pass;
1062             ireq->idAuthentication = auth;
1063         }
1064     }
1065     else if (auth_userId)
1066     {
1067         auth->which = Z_IdAuthentication_open;
1068         auth->u.open = (char *)
1069             odr_malloc(c->odr_out, strlen(auth_userId)+1);
1070         strcpy(auth->u.open, auth_userId);
1071         ireq->idAuthentication = auth;
1072     }
1073     if (c->proxy)
1074         yaz_oi_set_string_oidval(&ireq->otherInfo, c->odr_out,
1075                                  VAL_PROXY, 1, c->host_port);
1076     if (c->charset || c->lang)
1077     {
1078         Z_OtherInformation **oi;
1079         Z_OtherInformationUnit *oi_unit;
1080
1081         yaz_oi_APDU(apdu, &oi);
1082
1083         if ((oi_unit = yaz_oi_update(oi, c->odr_out, NULL, 0, 0)))
1084         {
1085             char **charsets_addresses = 0;
1086             char **langs_addresses = 0;
1087             int charsets_count = 0;
1088             int langs_count = 0;
1089
1090             if (c->charset)
1091                 nmem_strsplit_blank(c->odr_out->mem, c->charset,
1092                                     &charsets_addresses, &charsets_count);
1093             if (c->lang)
1094                 nmem_strsplit_blank(c->odr_out->mem, c->lang,
1095                                     &langs_addresses, &langs_count);
1096             ODR_MASK_SET(ireq->options, Z_Options_negotiationModel);
1097             oi_unit->which = Z_OtherInfo_externallyDefinedInfo;
1098             oi_unit->information.externallyDefinedInfo =
1099                 yaz_set_proposal_charneg(c->odr_out,
1100                                          (const char **) charsets_addresses,
1101                                          charsets_count,
1102                                          (const char **) langs_addresses,
1103                                          langs_count,
1104                                          1);
1105         }
1106     }
1107     assert (apdu);
1108     return send_APDU (c, apdu);
1109 }
1110
1111 #if HAVE_XML2
1112 static zoom_ret send_srw (ZOOM_connection c, Z_SRW_PDU *sr)
1113 {
1114     char ctype[50];
1115     Z_SOAP_Handler h[2] = {
1116         {"http://www.loc.gov/zing/srw/", 0, (Z_SOAP_fun) yaz_srw_codec},
1117         {0, 0, 0}
1118     };
1119     ODR o = odr_createmem(ODR_ENCODE);
1120     int ret;
1121     Z_SOAP *p = (Z_SOAP*) odr_malloc(o, sizeof(*p));
1122     Z_GDU *gdu;
1123     ZOOM_Event event;
1124
1125     gdu = z_get_HTTP_Request(c->odr_out);
1126     gdu->u.HTTP_Request->path = c->path;
1127
1128     if (c->host_port)
1129     {
1130         const char *cp0 = strstr(c->host_port, "://");
1131         const char *cp1 = 0;
1132         if (cp0)
1133             cp0 = cp0+3;
1134         else
1135             cp0 = c->host_port;
1136
1137         cp1 = strchr(cp0, '/');
1138         if (!cp1)
1139             cp1 = cp0+strlen(cp0);
1140
1141         if (cp0 && cp1)
1142         {
1143             char *h = (char*) odr_malloc(c->odr_out, cp1 - cp0 + 1);
1144             memcpy (h, cp0, cp1 - cp0);
1145             h[cp1-cp0] = '\0';
1146             z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1147                               "Host", h);
1148         }
1149     }
1150
1151     strcpy(ctype, "text/xml");
1152     if (c->charset && strlen(c->charset) < 20)
1153     {
1154         strcat(ctype, "; charset=");
1155         strcat(ctype, c->charset);
1156     }
1157     z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1158                       "Content-Type", ctype);
1159     z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1160                       "SOAPAction", "\"\"");
1161     p->which = Z_SOAP_generic;
1162     p->u.generic = (Z_SOAP_Generic *) odr_malloc(o, sizeof(*p->u.generic));
1163     p->u.generic->no = 0;
1164     p->u.generic->ns = 0;
1165     p->u.generic->p = sr;
1166     p->ns = "http://schemas.xmlsoap.org/soap/envelope/";
1167
1168     ret = z_soap_codec_enc(o, &p,
1169                            &gdu->u.HTTP_Request->content_buf,
1170                            &gdu->u.HTTP_Request->content_len, h,
1171                            c->charset);
1172
1173     if (!z_GDU(c->odr_out, &gdu, 0, 0))
1174         return zoom_complete;
1175     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1176
1177     odr_destroy(o);
1178
1179     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
1180     ZOOM_connection_put_event (c, event);
1181     odr_reset(c->odr_out);
1182     return do_write (c);
1183 }
1184 #endif
1185
1186 #if HAVE_XML2
1187 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1188 {
1189     int i;
1190     ZOOM_resultset resultset = 0;
1191     Z_SRW_PDU *sr = 0;
1192     const char *recordPacking = 0;
1193
1194     if (c->error)                  /* don't continue on error */
1195         return zoom_complete;
1196     assert (c->tasks);
1197     if (c->tasks->which == ZOOM_TASK_SEARCH)
1198     {
1199         resultset = c->tasks->u.search.resultset;
1200         resultset->setname = xstrdup ("default");
1201         ZOOM_options_set (resultset->options, "setname", resultset->setname);
1202     }
1203     else if(c->tasks->which == ZOOM_TASK_RETRIEVE)
1204     {
1205         resultset = c->tasks->u.retrieve.resultset;
1206
1207         resultset->start = c->tasks->u.retrieve.start;
1208         resultset->count = c->tasks->u.retrieve.count;
1209
1210         if (resultset->start >= resultset->size)
1211             return zoom_complete;
1212         if (resultset->start + resultset->count > resultset->size)
1213             resultset->count = resultset->size - resultset->start;
1214
1215         for (i = 0; i<resultset->count; i++)
1216         {
1217             ZOOM_record rec =
1218                 record_cache_lookup (resultset, i + resultset->start);
1219             if (!rec)
1220                 break;
1221         }
1222         if (i == resultset->count)
1223             return zoom_complete;
1224     }
1225     assert(resultset->query);
1226
1227     sr = yaz_srw_get(c->odr_out, Z_SRW_searchRetrieve_request);
1228
1229     if (resultset->query->z_query->which == Z_Query_type_104
1230         && resultset->query->z_query->u.type_104->which == Z_External_CQL)
1231     {
1232
1233         sr->u.request->query_type = Z_SRW_query_type_cql;
1234         sr->u.request->query.cql =resultset->query->z_query->u.type_104->u.cql;
1235     }
1236     else if (resultset->query->z_query->which == Z_Query_type_1 &&
1237              resultset->query->z_query->u.type_1)
1238     {
1239         sr->u.request->query_type = Z_SRW_query_type_pqf;
1240         sr->u.request->query.pqf = resultset->query->query_string;
1241     }
1242     else
1243     {
1244         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
1245         return zoom_complete;
1246     }
1247     sr->u.request->startRecord = odr_intdup (c->odr_out, resultset->start + 1);
1248     sr->u.request->maximumRecords = odr_intdup (
1249         c->odr_out, resultset->step>0 ? resultset->step : resultset->count);
1250     sr->u.request->recordSchema = resultset->schema;
1251
1252     recordPacking = ZOOM_resultset_option_get (resultset, "recordPacking");
1253
1254     if (recordPacking)
1255         sr->u.request->recordPacking = odr_strdup(c->odr_out, recordPacking);
1256
1257     return send_srw(c, sr);
1258 }
1259 #else
1260 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1261 {
1262     return zoom_complete;
1263 }
1264 #endif
1265
1266 static zoom_ret ZOOM_connection_send_search (ZOOM_connection c)
1267 {
1268     ZOOM_resultset r;
1269     int lslb, ssub, mspn;
1270     const char *syntax;
1271     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_searchRequest);
1272     Z_SearchRequest *search_req = apdu->u.searchRequest;
1273     const char *elementSetName;
1274     const char *smallSetElementSetName;
1275     const char *mediumSetElementSetName;
1276
1277     assert (c->tasks);
1278     assert (c->tasks->which == ZOOM_TASK_SEARCH);
1279
1280     r = c->tasks->u.search.resultset;
1281
1282     elementSetName =
1283         ZOOM_options_get (r->options, "elementSetName");
1284     smallSetElementSetName  =
1285         ZOOM_options_get (r->options, "smallSetElementSetName");
1286     mediumSetElementSetName =
1287         ZOOM_options_get (r->options, "mediumSetElementSetName");
1288
1289     if (!smallSetElementSetName)
1290         smallSetElementSetName = elementSetName;
1291
1292     if (!mediumSetElementSetName)
1293         mediumSetElementSetName = elementSetName;
1294
1295     assert (r);
1296     assert (r->query);
1297
1298     /* prepare query for the search request */
1299     search_req->query = r->query->z_query;
1300     if (!search_req->query)
1301     {
1302         set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
1303         return zoom_complete;
1304     }
1305
1306     search_req->databaseNames =
1307         set_DatabaseNames (c, r->options, &search_req->num_databaseNames);
1308
1309     /* get syntax (no need to provide unless piggyback is in effect) */
1310     syntax = ZOOM_options_get (r->options, "preferredRecordSyntax");
1311
1312     lslb = ZOOM_options_get_int (r->options, "largeSetLowerBound", -1);
1313     ssub = ZOOM_options_get_int (r->options, "smallSetUpperBound", -1);
1314     mspn = ZOOM_options_get_int (r->options, "mediumSetPresentNumber", -1);
1315     if (lslb != -1 && ssub != -1 && mspn != -1)
1316     {
1317         /* So're a Z39.50 expert? Let's hope you don't do sort */
1318         *search_req->largeSetLowerBound = lslb;
1319         *search_req->smallSetUpperBound = ssub;
1320         *search_req->mediumSetPresentNumber = mspn;
1321     }
1322     else if (r->start == 0 && r->count > 0
1323              && r->piggyback && !r->r_sort_spec && !r->schema)
1324     {
1325         /* Regular piggyback - do it unless we're going to do sort */
1326         *search_req->largeSetLowerBound = 2000000000;
1327         *search_req->smallSetUpperBound = 1;
1328         *search_req->mediumSetPresentNumber = r->step>0 ? r->step : r->count;
1329     }
1330     else
1331     {
1332         /* non-piggyback. Need not provide elementsets or syntaxes .. */
1333         smallSetElementSetName = 0;
1334         mediumSetElementSetName = 0;
1335         syntax = 0;
1336     }
1337     if (smallSetElementSetName && *smallSetElementSetName)
1338     {
1339         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1340             odr_malloc (c->odr_out, sizeof(*esn));
1341
1342         esn->which = Z_ElementSetNames_generic;
1343         esn->u.generic = odr_strdup (c->odr_out, smallSetElementSetName);
1344         search_req->smallSetElementSetNames = esn;
1345     }
1346     if (mediumSetElementSetName && *mediumSetElementSetName)
1347     {
1348         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1349             odr_malloc (c->odr_out, sizeof(*esn));
1350
1351         esn->which = Z_ElementSetNames_generic;
1352         esn->u.generic = odr_strdup (c->odr_out, mediumSetElementSetName);
1353         search_req->mediumSetElementSetNames = esn;
1354     }
1355     if (syntax)
1356         search_req->preferredRecordSyntax =
1357             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
1358
1359     if (!r->setname)
1360     {
1361         if (c->support_named_resultsets)
1362         {
1363             char setname[14];
1364             int ord;
1365             /* find the lowest unused ordinal so that we re-use
1366                result sets on the server. */
1367             for (ord = 1; ; ord++)
1368             {
1369                 ZOOM_resultset rp;
1370                 sprintf (setname, "%d", ord);
1371                 for (rp = c->resultsets; rp; rp = rp->next)
1372                     if (rp->setname && !strcmp (rp->setname, setname))
1373                         break;
1374                 if (!rp)
1375                     break;
1376             }
1377             r->setname = xstrdup (setname);
1378             yaz_log (log_level, "allocating set %s", r->setname);
1379         }
1380         else
1381             r->setname = xstrdup ("default");
1382         ZOOM_options_set (r->options, "setname", r->setname);
1383     }
1384     search_req->resultSetName = odr_strdup(c->odr_out, r->setname);
1385     /* send search request */
1386     return send_APDU (c, apdu);
1387 }
1388
1389 static void response_diag (ZOOM_connection c, Z_DiagRec *p)
1390 {
1391     int oclass;
1392     Z_DefaultDiagFormat *r;
1393     char *addinfo = 0;
1394
1395     xfree (c->addinfo);
1396     c->addinfo = 0;
1397     if (p->which != Z_DiagRec_defaultFormat)
1398     {
1399         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1400         return;
1401     }
1402     r = p->u.defaultFormat;
1403     switch (r->which)
1404     {
1405     case Z_DefaultDiagFormat_v2Addinfo:
1406         addinfo = r->u.v2Addinfo;
1407         break;
1408     case Z_DefaultDiagFormat_v3Addinfo:
1409         addinfo = r->u.v3Addinfo;
1410         break;
1411     }
1412     set_dset_error(c, *r->condition,
1413                    yaz_z3950oid_to_str(r->diagnosticSetId, &oclass),
1414                    addinfo, 0);
1415 }
1416
1417 ZOOM_API(ZOOM_record)
1418 ZOOM_record_clone (ZOOM_record srec)
1419 {
1420     char *buf;
1421     int size;
1422     ODR odr_enc;
1423     ZOOM_record nrec;
1424
1425     odr_enc = odr_createmem(ODR_ENCODE);
1426     if (!z_NamePlusRecord (odr_enc, &srec->npr, 0, 0))
1427         return 0;
1428     buf = odr_getbuf (odr_enc, &size, 0);
1429
1430     nrec = (ZOOM_record) xmalloc (sizeof(*nrec));
1431     nrec->odr = odr_createmem(ODR_DECODE);
1432     nrec->wrbuf_marc = 0;
1433     nrec->wrbuf_iconv = 0;
1434     nrec->wrbuf_opac = 0;
1435     odr_setbuf (nrec->odr, buf, size, 0);
1436     z_NamePlusRecord (nrec->odr, &nrec->npr, 0, 0);
1437
1438     odr_destroy (odr_enc);
1439     return nrec;
1440 }
1441
1442 ZOOM_API(ZOOM_record)
1443 ZOOM_resultset_record_immediate (ZOOM_resultset s,size_t pos)
1444 {
1445     return record_cache_lookup (s, pos);
1446 }
1447
1448 ZOOM_API(ZOOM_record)
1449 ZOOM_resultset_record (ZOOM_resultset r, size_t pos)
1450 {
1451     ZOOM_record rec = ZOOM_resultset_record_immediate(r, pos);
1452
1453     if (!rec)
1454     {
1455         ZOOM_resultset_retrieve (r, 1, pos, 1);
1456         rec = ZOOM_resultset_record_immediate (r, pos);
1457     }
1458     return rec;
1459 }
1460
1461 ZOOM_API(void)
1462 ZOOM_record_destroy (ZOOM_record rec)
1463 {
1464     if (!rec)
1465         return;
1466     if (rec->wrbuf_marc)
1467         wrbuf_free (rec->wrbuf_marc, 1);
1468     if (rec->wrbuf_iconv)
1469         wrbuf_free (rec->wrbuf_iconv, 1);
1470     if (rec->wrbuf_opac)
1471         wrbuf_free (rec->wrbuf_opac, 1);
1472     odr_destroy (rec->odr);
1473     xfree (rec);
1474 }
1475
1476 static const char *marc_iconv_return(ZOOM_record rec, int marc_type,
1477                                      int *len,
1478                                      const char *buf, int sz,
1479                                      const char *record_charset)
1480 {
1481     char to[40];
1482     char from[40];
1483     yaz_iconv_t cd = 0;
1484     yaz_marc_t mt = yaz_marc_create();
1485
1486     *from = '\0';
1487     strcpy(to, "UTF-8");
1488     if (record_charset && *record_charset)
1489     {
1490         /* Use "from,to" or just "from" */
1491         const char *cp = strchr(record_charset, ',');
1492         int clen = strlen(record_charset);
1493         if (cp && cp[1])
1494         {
1495             strncpy( to, cp+1, sizeof(to)-1);
1496             to[sizeof(to)-1] = '\0';
1497             clen = cp - record_charset;
1498         }
1499         if (clen > sizeof(from)-1)
1500             clen = sizeof(from)-1;
1501
1502         if (clen)
1503             strncpy(from, record_charset, clen);
1504         from[clen] = '\0';
1505     }
1506
1507     if (*from && *to)
1508     {
1509         cd = yaz_iconv_open(to, from);
1510         yaz_marc_iconv(mt, cd);
1511     }
1512
1513     yaz_marc_xml(mt, marc_type);
1514     if (!rec->wrbuf_marc)
1515         rec->wrbuf_marc = wrbuf_alloc();
1516     wrbuf_rewind (rec->wrbuf_marc);
1517     if (yaz_marc_decode_wrbuf (mt, buf, sz, rec->wrbuf_marc) > 0)
1518     {
1519         yaz_marc_destroy(mt);
1520         if (cd)
1521             yaz_iconv_close(cd);
1522         if (len)
1523             *len = wrbuf_len(rec->wrbuf_marc);
1524         return wrbuf_buf(rec->wrbuf_marc);
1525     }
1526     yaz_marc_destroy(mt);
1527     if (cd)
1528         yaz_iconv_close(cd);
1529     return 0;
1530 }
1531
1532 static const char *record_iconv_return(ZOOM_record rec, int *len,
1533                                        const char *buf, int sz,
1534                                        const char *record_charset)
1535 {
1536     char to[40];
1537     char from[40];
1538     yaz_iconv_t cd = 0;
1539
1540     *from = '\0';
1541     strcpy(to, "UTF-8");
1542     if (record_charset && *record_charset)
1543     {
1544         /* Use "from,to" or just "from" */
1545         const char *cp = strchr(record_charset, ',');
1546         int clen = strlen(record_charset);
1547         if (cp && cp[1])
1548         {
1549             strncpy( to, cp+1, sizeof(to)-1);
1550             to[sizeof(to)-1] = '\0';
1551             clen = cp - record_charset;
1552         }
1553         if (clen > sizeof(from)-1)
1554             clen = sizeof(from)-1;
1555
1556         if (clen)
1557             strncpy(from, record_charset, clen);
1558         from[clen] = '\0';
1559     }
1560
1561     if (*from && *to && (cd = yaz_iconv_open(to, from)))
1562     {
1563         char outbuf[12];
1564         size_t inbytesleft = sz;
1565         const char *inp = buf;
1566
1567         if (!rec->wrbuf_iconv)
1568             rec->wrbuf_iconv = wrbuf_alloc();
1569
1570         wrbuf_rewind(rec->wrbuf_iconv);
1571
1572         while (inbytesleft)
1573         {
1574             size_t outbytesleft = sizeof(outbuf);
1575             char *outp = outbuf;
1576             size_t r = yaz_iconv (cd, (char**) &inp,
1577                                   &inbytesleft,
1578                                   &outp, &outbytesleft);
1579             if (r == (size_t) (-1))
1580             {
1581                 int e = yaz_iconv_error(cd);
1582                 if (e != YAZ_ICONV_E2BIG)
1583                     break;
1584             }
1585             wrbuf_write(rec->wrbuf_iconv, outbuf, outp - outbuf);
1586         }
1587         wrbuf_puts(rec->wrbuf_iconv, "");
1588         buf = wrbuf_buf(rec->wrbuf_iconv);
1589         sz = wrbuf_len(rec->wrbuf_iconv);
1590         yaz_iconv_close(cd);
1591     }
1592     if (len)
1593         *len = sz;
1594     return buf;
1595 }
1596
1597 ZOOM_API(const char *)
1598 ZOOM_record_get (ZOOM_record rec, const char *type_spec, int *len)
1599 {
1600     char type[40];
1601     char charset[40];
1602     char xpath[512];
1603     const char *cp;
1604     int i;
1605     Z_NamePlusRecord *npr;
1606
1607     if (len)
1608         *len = 0; /* default return */
1609
1610     if (!rec)
1611         return 0;
1612     npr = rec->npr;
1613     if (!npr)
1614         return 0;
1615
1616     cp = type_spec;
1617     for (i = 0; cp[i] && i < sizeof(type)-1; i++)
1618     {
1619         if (cp[i] == ';' || cp[i] == ' ')
1620             break;
1621         type[i] = cp[i];
1622     }
1623     type[i] = '\0';
1624     charset[0] = '\0';
1625     while (type_spec[i] == ';')
1626     {
1627         i++;
1628         while (type_spec[i] == ' ')
1629             i++;
1630         if (!strncmp(type_spec+i, "charset=", 8))
1631         {
1632             int j = 0;
1633             i = i + 8; /* skip charset= */
1634             for (j = 0; type_spec[i]  && j < sizeof(charset)-1; i++, j++)
1635             {
1636                 if (type_spec[i] == ';' || type_spec[i] == ' ')
1637                     break;
1638                 charset[j] = cp[i];
1639             }
1640             charset[j] = '\0';
1641         }
1642         else if (!strncmp(type_spec+i, "xpath=", 6))
1643         {
1644             int j = 0;
1645             i = i + 6;
1646             for (j = 0; type_spec[i] && j < sizeof(xpath)-1; i++, j++)
1647                 xpath[j] = cp[i];
1648             xpath[j] = '\0';
1649         }
1650         while (type_spec[i] == ' ')
1651             i++;
1652     }
1653     if (!strcmp (type, "database"))
1654     {
1655         if (len)
1656             *len = (npr->databaseName ? strlen(npr->databaseName) : 0);
1657         return npr->databaseName;
1658     }
1659     else if (!strcmp (type, "syntax"))
1660     {
1661         const char *desc = 0;
1662         if (npr->which == Z_NamePlusRecord_databaseRecord)
1663         {
1664             Z_External *r = (Z_External *) npr->u.databaseRecord;
1665             oident *ent = oid_getentbyoid(r->direct_reference);
1666             if (ent)
1667                 desc = ent->desc;
1668         }
1669         if (!desc)
1670             desc = "none";
1671         if (len)
1672             *len = strlen(desc);
1673         return desc;
1674     }
1675     if (npr->which != Z_NamePlusRecord_databaseRecord)
1676         return 0;
1677
1678     /* from now on - we have a database record .. */
1679     if (!strcmp (type, "render"))
1680     {
1681         Z_External *r = (Z_External *) npr->u.databaseRecord;
1682         oident *ent = oid_getentbyoid(r->direct_reference);
1683
1684         /* render bibliographic record .. */
1685         if (r->which == Z_External_OPAC)
1686         {
1687             r = r->u.opac->bibliographicRecord;
1688             if (!r)
1689                 return 0;
1690             ent = oid_getentbyoid(r->direct_reference);
1691         }
1692         if (r->which == Z_External_sutrs)
1693             return record_iconv_return(rec, len,
1694                                        (char*) r->u.sutrs->buf,
1695                                        r->u.sutrs->len,
1696                                        charset);
1697         else if (r->which == Z_External_octet)
1698         {
1699             const char *ret_buf;
1700             switch (ent->value)
1701             {
1702             case VAL_SOIF:
1703             case VAL_HTML:
1704             case VAL_SUTRS:
1705                 break;
1706             case VAL_TEXT_XML:
1707             case VAL_APPLICATION_XML:
1708                 break;
1709             default:
1710                 ret_buf = marc_iconv_return(
1711                     rec, YAZ_MARC_LINE, len,
1712                     (const char *) r->u.octet_aligned->buf,
1713                     r->u.octet_aligned->len,
1714                     charset);
1715                 if (ret_buf)
1716                     return ret_buf;
1717             }
1718             return record_iconv_return(rec, len,
1719                                        (const char *) r->u.octet_aligned->buf,
1720                                        r->u.octet_aligned->len,
1721                                        charset);
1722         }
1723         else if (r->which == Z_External_grs1)
1724         {
1725             if (!rec->wrbuf_marc)
1726                 rec->wrbuf_marc = wrbuf_alloc();
1727             wrbuf_rewind (rec->wrbuf_marc);
1728             yaz_display_grs1(rec->wrbuf_marc, r->u.grs1, 0);
1729             return record_iconv_return(rec, len,
1730                                        wrbuf_buf(rec->wrbuf_marc),
1731                                        wrbuf_len(rec->wrbuf_marc),
1732                                        charset);
1733         }
1734         return 0;
1735     }
1736     else if (!strcmp (type, "xml") || !strcmp(type, "oai"))
1737     {
1738         Z_External *r = (Z_External *) npr->u.databaseRecord;
1739         oident *ent = oid_getentbyoid(r->direct_reference);
1740
1741         /* render bibliographic record .. */
1742         if (r->which == Z_External_OPAC)
1743         {
1744             r = r->u.opac->bibliographicRecord;
1745             if (!r)
1746                 return 0;
1747             ent = oid_getentbyoid(r->direct_reference);
1748         }
1749
1750         if (r->which == Z_External_sutrs)
1751             return record_iconv_return(rec, len,
1752                                        (const char *) r->u.sutrs->buf,
1753                                        r->u.sutrs->len,
1754                                        charset);
1755         else if (r->which == Z_External_octet)
1756         {
1757             const char *ret_buf;
1758             int marc_decode_type = YAZ_MARC_MARCXML;
1759
1760             if (!strcmp(type, "oai"))
1761                 marc_decode_type = YAZ_MARC_OAIMARC;
1762             switch (ent->value)
1763             {
1764             case VAL_SOIF:
1765             case VAL_HTML:
1766             case VAL_SUTRS:
1767                 break;
1768             case VAL_TEXT_XML:
1769             case VAL_APPLICATION_XML:
1770                 break;
1771             default:
1772                 ret_buf = marc_iconv_return(
1773                     rec, marc_decode_type, len,
1774                     (const char *) r->u.octet_aligned->buf,
1775                     r->u.octet_aligned->len,
1776                     charset);
1777                 if (ret_buf)
1778                     return ret_buf;
1779             }
1780             return record_iconv_return(rec, len,
1781                                        (const char *) r->u.octet_aligned->buf,
1782                                        r->u.octet_aligned->len,
1783                                        charset);
1784         }
1785         else if (r->which == Z_External_grs1)
1786         {
1787             if (len) *len = 5;
1788             return "GRS-1";
1789         }
1790         return 0;
1791     }
1792     else if (!strcmp (type, "raw"))
1793     {
1794         Z_External *r = (Z_External *) npr->u.databaseRecord;
1795
1796         if (r->which == Z_External_sutrs)
1797         {
1798             if (len) *len = r->u.sutrs->len;
1799             return (const char *) r->u.sutrs->buf;
1800         }
1801         else if (r->which == Z_External_octet)
1802         {
1803             if (len) *len = r->u.octet_aligned->len;
1804             return (const char *) r->u.octet_aligned->buf;
1805         }
1806         else /* grs-1, explain, OPAC, ... */
1807         {
1808             if (len) *len = -1;
1809             return (const char *) npr->u.databaseRecord;
1810         }
1811         return 0;
1812     }
1813     else if (!strcmp (type, "ext"))
1814     {
1815         if (len) *len = -1;
1816         return (const char *) npr->u.databaseRecord;
1817     }
1818     else if (!strcmp (type, "opac"))
1819
1820     {
1821         Z_External *r = (Z_External *) npr->u.databaseRecord;
1822         if (r->which == Z_External_OPAC)
1823         {
1824             if (!rec->wrbuf_opac)
1825                 rec->wrbuf_opac = wrbuf_alloc();
1826             wrbuf_rewind (rec->wrbuf_opac);
1827             yaz_display_OPAC(rec->wrbuf_opac, r->u.opac, 0);
1828             return record_iconv_return(rec, len,
1829                                        wrbuf_buf(rec->wrbuf_opac),
1830                                        wrbuf_len(rec->wrbuf_opac),
1831                                        charset);
1832         }
1833     }
1834     return 0;
1835 }
1836
1837 static int strcmp_null(const char *v1, const char *v2)
1838 {
1839     if (!v1 && !v2)
1840         return 0;
1841     if (!v1 || !v2)
1842         return -1;
1843     return strcmp(v1, v2);
1844 }
1845
1846 static void record_cache_add (ZOOM_resultset r, Z_NamePlusRecord *npr,
1847                               int pos)
1848 {
1849     ZOOM_record_cache rc;
1850     const char *elementSetName =
1851         ZOOM_resultset_option_get (r, "elementSetName");
1852     const char *syntax =
1853         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
1854
1855     ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
1856     ZOOM_connection_put_event(r->connection, event);
1857
1858     for (rc = r->record_cache; rc; rc = rc->next)
1859     {
1860         if (pos == rc->pos)
1861         {
1862             if (strcmp_null(r->schema, rc->schema))
1863                 continue;
1864             if (strcmp_null(elementSetName,rc->elementSetName))
1865                 continue;
1866             if (strcmp_null(syntax, rc->syntax))
1867                 continue;
1868             /* not destroying rc->npr (it's handled by nmem )*/
1869             rc->rec.npr = npr;
1870             /* keeping wrbuf_marc too */
1871             return;
1872         }
1873     }
1874     rc = (ZOOM_record_cache) odr_malloc (r->odr, sizeof(*rc));
1875     rc->rec.npr = npr;
1876     rc->rec.odr = 0;
1877     rc->rec.wrbuf_marc = 0;
1878     rc->rec.wrbuf_iconv = 0;
1879     rc->rec.wrbuf_opac = 0;
1880     if (elementSetName)
1881         rc->elementSetName = odr_strdup (r->odr, elementSetName);
1882     else
1883         rc->elementSetName = 0;
1884
1885     if (syntax)
1886         rc->syntax = odr_strdup (r->odr, syntax);
1887     else
1888         rc->syntax = 0;
1889
1890     if (r->schema)
1891         rc->schema = odr_strdup (r->odr, r->schema);
1892     else
1893         rc->schema = 0;
1894
1895     rc->pos = pos;
1896     rc->next = r->record_cache;
1897     r->record_cache = rc;
1898 }
1899
1900 static ZOOM_record record_cache_lookup (ZOOM_resultset r, int pos)
1901 {
1902     ZOOM_record_cache rc;
1903     const char *elementSetName =
1904         ZOOM_resultset_option_get (r, "elementSetName");
1905     const char *syntax =
1906         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
1907
1908     for (rc = r->record_cache; rc; rc = rc->next)
1909     {
1910         if (pos == rc->pos)
1911         {
1912             if (strcmp_null(r->schema, rc->schema))
1913                 continue;
1914             if (strcmp_null(elementSetName,rc->elementSetName))
1915                 continue;
1916             if (strcmp_null(syntax, rc->syntax))
1917                 continue;
1918             return &rc->rec;
1919         }
1920     }
1921     return 0;
1922 }
1923
1924 static void handle_records (ZOOM_connection c, Z_Records *sr,
1925                             int present_phase)
1926 {
1927     ZOOM_resultset resultset;
1928
1929     if (!c->tasks)
1930         return ;
1931     switch (c->tasks->which)
1932     {
1933     case ZOOM_TASK_SEARCH:
1934         resultset = c->tasks->u.search.resultset;
1935         break;
1936     case ZOOM_TASK_RETRIEVE:
1937         resultset = c->tasks->u.retrieve.resultset;
1938         break;
1939     default:
1940         return;
1941     }
1942     if (sr && sr->which == Z_Records_NSD)
1943     {
1944         Z_DiagRec dr, *dr_p = &dr;
1945         dr.which = Z_DiagRec_defaultFormat;
1946         dr.u.defaultFormat = sr->u.nonSurrogateDiagnostic;
1947
1948         response_diag (c, dr_p);
1949     }
1950     else if (sr && sr->which == Z_Records_multipleNSD)
1951     {
1952         if (sr->u.multipleNonSurDiagnostics->num_diagRecs >= 1)
1953             response_diag(c, sr->u.multipleNonSurDiagnostics->diagRecs[0]);
1954         else
1955             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1956     }
1957     else
1958     {
1959         if (resultset->count + resultset->start > resultset->size)
1960             resultset->count = resultset->size - resultset->start;
1961         if (resultset->count < 0)
1962             resultset->count = 0;
1963         if (sr && sr->which == Z_Records_DBOSD)
1964         {
1965             int i;
1966             NMEM nmem = odr_extract_mem (c->odr_in);
1967             Z_NamePlusRecordList *p =
1968                 sr->u.databaseOrSurDiagnostics;
1969             for (i = 0; i<p->num_records; i++)
1970             {
1971                 record_cache_add (resultset, p->records[i],
1972                                   i+ resultset->start);
1973             }
1974             /* transfer our response to search_nmem .. we need it later */
1975             nmem_transfer (resultset->odr->mem, nmem);
1976             nmem_destroy (nmem);
1977             if (present_phase && p->num_records == 0)
1978             {
1979                 /* present response and we didn't get any records! */
1980                 Z_NamePlusRecord *myrec =
1981                     zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
1982                 record_cache_add(resultset, myrec, resultset->start);
1983             }
1984         }
1985         else if (present_phase)
1986         {
1987             /* present response and we didn't get any records! */
1988             Z_NamePlusRecord *myrec =
1989                 zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
1990             record_cache_add(resultset, myrec, resultset->start);
1991         }
1992     }
1993 }
1994
1995 static void handle_present_response (ZOOM_connection c, Z_PresentResponse *pr)
1996 {
1997     handle_records (c, pr->records, 1);
1998 }
1999
2000 static void handle_search_response (ZOOM_connection c, Z_SearchResponse *sr)
2001 {
2002     ZOOM_resultset resultset;
2003     ZOOM_Event event;
2004
2005     yaz_log (log_level, "got search response");
2006
2007     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
2008         return ;
2009
2010     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
2011     ZOOM_connection_put_event(c, event);
2012
2013     resultset = c->tasks->u.search.resultset;
2014
2015     resultset->size = *sr->resultCount;
2016     handle_records (c, sr->records, 0);
2017 }
2018
2019 static void sort_response (ZOOM_connection c, Z_SortResponse *res)
2020 {
2021     if (res->diagnostics && res->num_diagnostics > 0)
2022         response_diag (c, res->diagnostics[0]);
2023 }
2024
2025 static int scan_response (ZOOM_connection c, Z_ScanResponse *res)
2026 {
2027     NMEM nmem = odr_extract_mem (c->odr_in);
2028     ZOOM_scanset scan;
2029
2030     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
2031         return 0;
2032     scan = c->tasks->u.scan.scan;
2033
2034     if (res->entries && res->entries->nonsurrogateDiagnostics)
2035         response_diag(c, res->entries->nonsurrogateDiagnostics[0]);
2036     scan->scan_response = res;
2037     nmem_transfer (scan->odr->mem, nmem);
2038     if (res->stepSize)
2039         ZOOM_options_set_int (scan->options, "stepSize", *res->stepSize);
2040     if (res->positionOfTerm)
2041         ZOOM_options_set_int (scan->options, "position", *res->positionOfTerm);
2042     if (res->scanStatus)
2043         ZOOM_options_set_int (scan->options, "scanStatus", *res->scanStatus);
2044     if (res->numberOfEntriesReturned)
2045         ZOOM_options_set_int (scan->options, "number",
2046                               *res->numberOfEntriesReturned);
2047     nmem_destroy (nmem);
2048     return 1;
2049 }
2050
2051 static zoom_ret send_sort (ZOOM_connection c,
2052                            ZOOM_resultset resultset)
2053 {
2054     if (c->error)
2055         resultset->r_sort_spec = 0;
2056     if (resultset->r_sort_spec)
2057     {
2058         Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_sortRequest);
2059         Z_SortRequest *req = apdu->u.sortRequest;
2060
2061         req->num_inputResultSetNames = 1;
2062         req->inputResultSetNames = (Z_InternationalString **)
2063             odr_malloc (c->odr_out, sizeof(*req->inputResultSetNames));
2064         req->inputResultSetNames[0] =
2065             odr_strdup (c->odr_out, resultset->setname);
2066         req->sortedResultSetName = odr_strdup (c->odr_out, resultset->setname);
2067         req->sortSequence = resultset->r_sort_spec;
2068         resultset->r_sort_spec = 0;
2069         return send_APDU (c, apdu);
2070     }
2071     return zoom_complete;
2072 }
2073
2074 static zoom_ret send_present (ZOOM_connection c)
2075 {
2076     Z_APDU *apdu = 0;
2077     Z_PresentRequest *req = 0;
2078     int i = 0;
2079     const char *syntax = 0;
2080     const char *elementSetName = 0;
2081     ZOOM_resultset  resultset;
2082
2083     if (!c->tasks)
2084         return zoom_complete;
2085
2086     switch (c->tasks->which)
2087     {
2088     case ZOOM_TASK_SEARCH:
2089         resultset = c->tasks->u.search.resultset;
2090         break;
2091     case ZOOM_TASK_RETRIEVE:
2092         resultset = c->tasks->u.retrieve.resultset;
2093         resultset->start = c->tasks->u.retrieve.start;
2094         resultset->count = c->tasks->u.retrieve.count;
2095
2096         if (resultset->start >= resultset->size)
2097             return zoom_complete;
2098         if (resultset->start + resultset->count > resultset->size)
2099             resultset->count = resultset->size - resultset->start;
2100         break;
2101     default:
2102         return zoom_complete;
2103     }
2104
2105     syntax = ZOOM_resultset_option_get (resultset, "preferredRecordSyntax");
2106     elementSetName = ZOOM_resultset_option_get (resultset, "elementSetName");
2107
2108     if (c->error)                  /* don't continue on error */
2109         return zoom_complete;
2110     if (resultset->start < 0)
2111         return zoom_complete;
2112     for (i = 0; i<resultset->count; i++)
2113     {
2114         ZOOM_record rec =
2115             record_cache_lookup (resultset, i + resultset->start);
2116         if (!rec)
2117             break;
2118     }
2119     if (i == resultset->count)
2120         return zoom_complete;
2121
2122     apdu = zget_APDU(c->odr_out, Z_APDU_presentRequest);
2123     req = apdu->u.presentRequest;
2124
2125     resultset->start += i;
2126     resultset->count -= i;
2127     *req->resultSetStartPoint = resultset->start + 1;
2128     *req->numberOfRecordsRequested = resultset->step>0 ?
2129         resultset->step : resultset->count;
2130     assert (*req->numberOfRecordsRequested > 0);
2131
2132     if (syntax && *syntax)
2133         req->preferredRecordSyntax =
2134             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
2135
2136     if (resultset->schema && *resultset->schema)
2137     {
2138         Z_RecordComposition *compo = (Z_RecordComposition *)
2139             odr_malloc (c->odr_out, sizeof(*compo));
2140
2141         req->recordComposition = compo;
2142         compo->which = Z_RecordComp_complex;
2143         compo->u.complex = (Z_CompSpec *)
2144             odr_malloc(c->odr_out, sizeof(*compo->u.complex));
2145         compo->u.complex->selectAlternativeSyntax = (bool_t *)
2146             odr_malloc(c->odr_out, sizeof(bool_t));
2147         *compo->u.complex->selectAlternativeSyntax = 0;
2148
2149         compo->u.complex->generic = (Z_Specification *)
2150             odr_malloc(c->odr_out, sizeof(*compo->u.complex->generic));
2151
2152         compo->u.complex->generic->which = Z_Schema_oid;
2153         compo->u.complex->generic->schema.oid = (Odr_oid *)
2154             yaz_str_to_z3950oid (c->odr_out, CLASS_SCHEMA, resultset->schema);
2155
2156         if (!compo->u.complex->generic->schema.oid)
2157         {
2158             /* OID wasn't a schema! Try record syntax instead. */
2159
2160             compo->u.complex->generic->schema.oid = (Odr_oid *)
2161                 yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, resultset->schema);
2162         }
2163         if (elementSetName && *elementSetName)
2164         {
2165             compo->u.complex->generic->elementSpec = (Z_ElementSpec *)
2166                 odr_malloc(c->odr_out, sizeof(Z_ElementSpec));
2167             compo->u.complex->generic->elementSpec->which =
2168                 Z_ElementSpec_elementSetName;
2169             compo->u.complex->generic->elementSpec->u.elementSetName =
2170                 odr_strdup (c->odr_out, elementSetName);
2171         }
2172         else
2173             compo->u.complex->generic->elementSpec = 0;
2174         compo->u.complex->num_dbSpecific = 0;
2175         compo->u.complex->dbSpecific = 0;
2176         compo->u.complex->num_recordSyntax = 0;
2177         compo->u.complex->recordSyntax = 0;
2178     }
2179     else if (elementSetName && *elementSetName)
2180     {
2181         Z_ElementSetNames *esn = (Z_ElementSetNames *)
2182             odr_malloc (c->odr_out, sizeof(*esn));
2183         Z_RecordComposition *compo = (Z_RecordComposition *)
2184             odr_malloc (c->odr_out, sizeof(*compo));
2185
2186         esn->which = Z_ElementSetNames_generic;
2187         esn->u.generic = odr_strdup (c->odr_out, elementSetName);
2188         compo->which = Z_RecordComp_simple;
2189         compo->u.simple = esn;
2190         req->recordComposition = compo;
2191     }
2192     req->resultSetId = odr_strdup(c->odr_out, resultset->setname);
2193     return send_APDU (c, apdu);
2194 }
2195
2196 ZOOM_API(ZOOM_scanset)
2197 ZOOM_connection_scan (ZOOM_connection c, const char *start)
2198 {
2199     ZOOM_scanset scan = (ZOOM_scanset) xmalloc (sizeof(*scan));
2200
2201     scan->connection = c;
2202     scan->odr = odr_createmem (ODR_DECODE);
2203     scan->options = ZOOM_options_create_with_parent (c->options);
2204     scan->refcount = 1;
2205     scan->scan_response = 0;
2206
2207     if ((scan->termListAndStartPoint =
2208          p_query_scan(scan->odr, PROTO_Z3950, &scan->attributeSet,
2209                       start)))
2210     {
2211         ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_SCAN);
2212         task->u.scan.scan = scan;
2213
2214         (scan->refcount)++;
2215         if (!c->async)
2216         {
2217             while (ZOOM_event (1, &c))
2218                 ;
2219         }
2220     }
2221     return scan;
2222 }
2223
2224 ZOOM_API(void)
2225 ZOOM_scanset_destroy (ZOOM_scanset scan)
2226 {
2227     if (!scan)
2228         return;
2229     (scan->refcount)--;
2230     if (scan->refcount == 0)
2231     {
2232         odr_destroy (scan->odr);
2233
2234         ZOOM_options_destroy (scan->options);
2235         xfree (scan);
2236     }
2237 }
2238
2239 static zoom_ret send_package (ZOOM_connection c)
2240 {
2241     ZOOM_Event event;
2242     if (!c->tasks)
2243         return zoom_complete;
2244     assert (c->tasks->which == ZOOM_TASK_PACKAGE);
2245
2246     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
2247     ZOOM_connection_put_event (c, event);
2248
2249     return do_write_ex (c, c->tasks->u.package->buf_out,
2250                         c->tasks->u.package->len_out);
2251 }
2252
2253 static zoom_ret send_scan (ZOOM_connection c)
2254 {
2255     ZOOM_scanset scan;
2256     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_scanRequest);
2257     Z_ScanRequest *req = apdu->u.scanRequest;
2258     if (!c->tasks)
2259         return zoom_complete;
2260     assert (c->tasks->which == ZOOM_TASK_SCAN);
2261     scan = c->tasks->u.scan.scan;
2262
2263     req->termListAndStartPoint = scan->termListAndStartPoint;
2264     req->attributeSet = scan->attributeSet;
2265
2266     *req->numberOfTermsRequested =
2267         ZOOM_options_get_int(scan->options, "number", 10);
2268
2269     req->preferredPositionInResponse =
2270         odr_intdup (c->odr_out,
2271                     ZOOM_options_get_int(scan->options, "position", 1));
2272
2273     req->stepSize =
2274         odr_intdup (c->odr_out,
2275                     ZOOM_options_get_int(scan->options, "stepSize", 0));
2276
2277     req->databaseNames = set_DatabaseNames (c, scan->options,
2278                                             &req->num_databaseNames);
2279
2280     return send_APDU (c, apdu);
2281 }
2282
2283 ZOOM_API(size_t)
2284 ZOOM_scanset_size (ZOOM_scanset scan)
2285 {
2286     if (!scan || !scan->scan_response || !scan->scan_response->entries)
2287         return 0;
2288     return scan->scan_response->entries->num_entries;
2289 }
2290
2291 ZOOM_API(const char *)
2292 ZOOM_scanset_term (ZOOM_scanset scan, size_t pos,
2293                    int *occ, int *len)
2294 {
2295     const char *term = 0;
2296     size_t noent = ZOOM_scanset_size (scan);
2297     Z_ScanResponse *res = scan->scan_response;
2298
2299     *len = 0;
2300     *occ = 0;
2301     if (pos >= noent)
2302         return 0;
2303     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2304     {
2305         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2306
2307         if (t->term->which == Z_Term_general)
2308         {
2309             term = (const char *) t->term->u.general->buf;
2310             *len = t->term->u.general->len;
2311         }
2312         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2313     }
2314     return term;
2315 }
2316
2317 ZOOM_API(const char *)
2318 ZOOM_scanset_display_term (ZOOM_scanset scan, size_t pos,
2319                            int *occ, int *len)
2320 {
2321     const char *term = 0;
2322     size_t noent = ZOOM_scanset_size (scan);
2323     Z_ScanResponse *res = scan->scan_response;
2324
2325     *len = 0;
2326     *occ = 0;
2327     if (pos >= noent)
2328         return 0;
2329     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2330     {
2331         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2332
2333         if (t->displayTerm)
2334         {
2335             term = t->displayTerm;
2336             *len = strlen(term);
2337         }
2338         else if (t->term->which == Z_Term_general)
2339         {
2340             term = (const char *) t->term->u.general->buf;
2341             *len = t->term->u.general->len;
2342         }
2343         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2344     }
2345     return term;
2346 }
2347
2348 ZOOM_API(const char *)
2349 ZOOM_scanset_option_get (ZOOM_scanset scan, const char *key)
2350 {
2351     return ZOOM_options_get (scan->options, key);
2352 }
2353
2354 ZOOM_API(void)
2355 ZOOM_scanset_option_set (ZOOM_scanset scan, const char *key,
2356                               const char *val)
2357 {
2358     ZOOM_options_set (scan->options, key, val);
2359 }
2360
2361 static Z_APDU *create_es_package (ZOOM_package p, int type)
2362 {
2363     const char *str;
2364     Z_APDU *apdu = zget_APDU(p->odr_out, Z_APDU_extendedServicesRequest);
2365     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2366
2367     *req->function = Z_ExtendedServicesRequest_create;
2368
2369     str = ZOOM_options_get(p->options, "package-name");
2370     if (str && *str)
2371         req->packageName = nmem_strdup (p->odr_out->mem, str);
2372
2373     str = ZOOM_options_get(p->options, "user-id");
2374     if (str)
2375         req->userId = nmem_strdup (p->odr_out->mem, str);
2376
2377     req->packageType = yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2378                                               type);
2379
2380     str = ZOOM_options_get(p->options, "function");
2381     if (str)
2382     {
2383         if (!strcmp (str, "create"))
2384             *req->function = 1;
2385         if (!strcmp (str, "delete"))
2386             *req->function = 2;
2387         if (!strcmp (str, "modify"))
2388             *req->function = 3;
2389     }
2390     return apdu;
2391 }
2392
2393 static const char *ill_array_lookup (void *clientData, const char *idx)
2394 {
2395     ZOOM_package p = (ZOOM_package) clientData;
2396     return ZOOM_options_get (p->options, idx+4);
2397 }
2398
2399 static Z_External *encode_ill_request (ZOOM_package p)
2400 {
2401     ODR out = p->odr_out;
2402     ILL_Request *req;
2403     Z_External *r = 0;
2404     struct ill_get_ctl ctl;
2405
2406     ctl.odr = p->odr_out;
2407     ctl.clientData = p;
2408     ctl.f = ill_array_lookup;
2409
2410     req = ill_get_ILLRequest(&ctl, "ill", 0);
2411
2412     if (!ill_Request (out, &req, 0, 0))
2413     {
2414         int ill_request_size;
2415         char *ill_request_buf = odr_getbuf (out, &ill_request_size, 0);
2416         if (ill_request_buf)
2417             odr_setbuf (out, ill_request_buf, ill_request_size, 1);
2418         return 0;
2419     }
2420     else
2421     {
2422         oident oid;
2423         int illRequest_size = 0;
2424         char *illRequest_buf = odr_getbuf (out, &illRequest_size, 0);
2425
2426         oid.proto = PROTO_GENERAL;
2427         oid.oclass = CLASS_GENERAL;
2428         oid.value = VAL_ISO_ILL_1;
2429
2430         r = (Z_External *) odr_malloc (out, sizeof(*r));
2431         r->direct_reference = odr_oiddup(out,oid_getoidbyent(&oid));
2432         r->indirect_reference = 0;
2433         r->descriptor = 0;
2434         r->which = Z_External_single;
2435
2436         r->u.single_ASN1_type = (Odr_oct *)
2437             odr_malloc (out, sizeof(*r->u.single_ASN1_type));
2438         r->u.single_ASN1_type->buf = (unsigned char*)
2439             odr_malloc (out, illRequest_size);
2440         r->u.single_ASN1_type->len = illRequest_size;
2441         r->u.single_ASN1_type->size = illRequest_size;
2442         memcpy (r->u.single_ASN1_type->buf, illRequest_buf, illRequest_size);
2443     }
2444     return r;
2445 }
2446
2447 static Z_ItemOrder *encode_item_order(ZOOM_package p)
2448 {
2449     Z_ItemOrder *req = (Z_ItemOrder *) odr_malloc (p->odr_out, sizeof(*req));
2450     const char *str;
2451
2452     req->which = Z_IOItemOrder_esRequest;
2453     req->u.esRequest = (Z_IORequest *)
2454         odr_malloc(p->odr_out,sizeof(Z_IORequest));
2455
2456     /* to keep part ... */
2457     req->u.esRequest->toKeep = (Z_IOOriginPartToKeep *)
2458         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartToKeep));
2459     req->u.esRequest->toKeep->supplDescription = 0;
2460     req->u.esRequest->toKeep->contact = (Z_IOContact *)
2461         odr_malloc (p->odr_out, sizeof(*req->u.esRequest->toKeep->contact));
2462
2463     str = ZOOM_options_get(p->options, "contact-name");
2464     req->u.esRequest->toKeep->contact->name = str ?
2465         nmem_strdup (p->odr_out->mem, str) : 0;
2466
2467     str = ZOOM_options_get(p->options, "contact-phone");
2468     req->u.esRequest->toKeep->contact->phone = str ?
2469         nmem_strdup (p->odr_out->mem, str) : 0;
2470
2471     str = ZOOM_options_get(p->options, "contact-email");
2472     req->u.esRequest->toKeep->contact->email = str ?
2473         nmem_strdup (p->odr_out->mem, str) : 0;
2474
2475     req->u.esRequest->toKeep->addlBilling = 0;
2476
2477     /* not to keep part ... */
2478     req->u.esRequest->notToKeep = (Z_IOOriginPartNotToKeep *)
2479         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartNotToKeep));
2480
2481     str = ZOOM_options_get(p->options, "itemorder-setname");
2482     if (!str)
2483         str = "default";
2484
2485     if (!*str)
2486         req->u.esRequest->notToKeep->resultSetItem = 0;
2487     else
2488     {
2489         req->u.esRequest->notToKeep->resultSetItem = (Z_IOResultSetItem *)
2490            odr_malloc(p->odr_out, sizeof(Z_IOResultSetItem));
2491
2492         req->u.esRequest->notToKeep->resultSetItem->resultSetId =
2493            nmem_strdup (p->odr_out->mem, str);
2494         req->u.esRequest->notToKeep->resultSetItem->item =
2495             (int *) odr_malloc(p->odr_out, sizeof(int));
2496
2497         str = ZOOM_options_get(p->options, "itemorder-item");
2498         *req->u.esRequest->notToKeep->resultSetItem->item =
2499             (str ? atoi(str) : 1);
2500     }
2501     req->u.esRequest->notToKeep->itemRequest = encode_ill_request(p);
2502
2503     return req;
2504 }
2505
2506 Z_APDU *create_admin_package(ZOOM_package p, int type,
2507                              Z_ESAdminOriginPartToKeep **toKeepP,
2508                              Z_ESAdminOriginPartNotToKeep **notToKeepP)
2509 {
2510     Z_APDU *apdu = create_es_package (p, VAL_ADMINSERVICE);
2511     if (apdu)
2512     {
2513         Z_ESAdminOriginPartToKeep  *toKeep;
2514         Z_ESAdminOriginPartNotToKeep  *notToKeep;
2515         Z_External *r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
2516         const char *first_db = "Default";
2517         int num_db;
2518         char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2519         if (num_db > 0)
2520             first_db = db[0];
2521
2522         r->direct_reference =
2523             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2524                                    VAL_ADMINSERVICE);
2525         r->descriptor = 0;
2526         r->indirect_reference = 0;
2527         r->which = Z_External_ESAdmin;
2528
2529         r->u.adminService = (Z_Admin *)
2530             odr_malloc(p->odr_out, sizeof(*r->u.adminService));
2531         r->u.adminService->which = Z_Admin_esRequest;
2532         r->u.adminService->u.esRequest = (Z_AdminEsRequest *)
2533             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest));
2534
2535         toKeep = r->u.adminService->u.esRequest->toKeep =
2536             (Z_ESAdminOriginPartToKeep *)
2537             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest->toKeep));
2538         toKeep->which = type;
2539         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2540         toKeep->u.create = odr_nullval();
2541         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2542
2543         r->u.adminService->u.esRequest->notToKeep = notToKeep =
2544             (Z_ESAdminOriginPartNotToKeep *)
2545             odr_malloc(p->odr_out,
2546                        sizeof(*r->u.adminService->u.esRequest->notToKeep));
2547         notToKeep->which = Z_ESAdminOriginPartNotToKeep_recordsWillFollow;
2548         notToKeep->u.recordsWillFollow = odr_nullval();
2549         if (toKeepP)
2550             *toKeepP = toKeep;
2551         if (notToKeepP)
2552             *notToKeepP = notToKeep;
2553     }
2554     return apdu;
2555 }
2556
2557 static Z_APDU *create_update_package(ZOOM_package p)
2558 {
2559     Z_APDU *apdu = 0;
2560     const char *first_db = "Default";
2561     int num_db;
2562     char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2563     const char *action = ZOOM_options_get(p->options, "action");
2564     const char *recordIdOpaque = ZOOM_options_get(p->options, "recordIdOpaque");
2565     const char *recordIdNumber = ZOOM_options_get(p->options, "recordIdNumber");
2566     const char *record_buf = ZOOM_options_get(p->options, "record");
2567     const char *syntax_str = ZOOM_options_get(p->options, "syntax");
2568     int syntax_oid = VAL_NONE;
2569     int action_no = -1;
2570
2571     if (syntax_str)
2572         syntax_oid = oid_getvalbyname(syntax_str);
2573     if (!record_buf)
2574     {
2575         record_buf = "void";
2576         syntax_oid = VAL_SUTRS;
2577     }
2578     if (syntax_oid != VAL_NONE)
2579         syntax_oid = VAL_TEXT_XML;
2580
2581     if (num_db > 0)
2582         first_db = db[0];
2583
2584     if (!action)
2585         action = "specialUpdate";
2586
2587     if (!strcmp(action, "recordInsert"))
2588         action_no = Z_IUOriginPartToKeep_recordInsert;
2589     else if (!strcmp(action, "recordReplace"))
2590         action_no = Z_IUOriginPartToKeep_recordReplace;
2591     else if (!strcmp(action, "recordDelete"))
2592         action_no = Z_IUOriginPartToKeep_recordDelete;
2593     else if (!strcmp(action, "elementUpdate"))
2594         action_no = Z_IUOriginPartToKeep_elementUpdate;
2595     else if (!strcmp(action, "specialUpdate"))
2596         action_no = Z_IUOriginPartToKeep_specialUpdate;
2597     else
2598         return 0;
2599
2600     apdu = create_es_package (p, VAL_DBUPDATE);
2601     if (apdu)
2602     {
2603         Z_IUOriginPartToKeep *toKeep;
2604         Z_IUSuppliedRecords *notToKeep;
2605         Z_External *r = (Z_External *)
2606             odr_malloc (p->odr_out, sizeof(*r));
2607
2608         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2609
2610         r->direct_reference =
2611             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2612                                    VAL_DBUPDATE);
2613         r->descriptor = 0;
2614         r->which = Z_External_update;
2615         r->indirect_reference = 0;
2616         r->u.update = (Z_IUUpdate *)
2617             odr_malloc(p->odr_out, sizeof(*r->u.update));
2618
2619         r->u.update->which = Z_IUUpdate_esRequest;
2620         r->u.update->u.esRequest = (Z_IUUpdateEsRequest *)
2621             odr_malloc(p->odr_out, sizeof(*r->u.update->u.esRequest));
2622         toKeep = r->u.update->u.esRequest->toKeep =
2623             (Z_IUOriginPartToKeep *)
2624             odr_malloc(p->odr_out, sizeof(*toKeep));
2625
2626         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2627         toKeep->schema = 0;
2628         toKeep->elementSetName = 0;
2629         toKeep->actionQualifier = 0;
2630         toKeep->action = odr_intdup(p->odr_out, action_no);
2631
2632         notToKeep = r->u.update->u.esRequest->notToKeep =
2633             (Z_IUSuppliedRecords *)
2634             odr_malloc(p->odr_out, sizeof(*notToKeep));
2635         notToKeep->num = 1;
2636         notToKeep->elements = (Z_IUSuppliedRecords_elem **)
2637             odr_malloc(p->odr_out, sizeof(*notToKeep->elements));
2638         notToKeep->elements[0] = (Z_IUSuppliedRecords_elem *)
2639             odr_malloc(p->odr_out, sizeof(**notToKeep->elements));
2640         notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_opaque;
2641         if (recordIdOpaque)
2642         {
2643             notToKeep->elements[0]->u.opaque = (Odr_oct *)
2644                 odr_malloc (p->odr_out, sizeof(Odr_oct));
2645             notToKeep->elements[0]->u.opaque->size =
2646                 notToKeep->elements[0]->u.opaque->len = strlen(recordIdOpaque);
2647             notToKeep->elements[0]->u.opaque->buf = (unsigned char*)
2648                 odr_strdup(p->odr_out, recordIdOpaque);
2649         }
2650         else if (recordIdNumber)
2651         {
2652             notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_number;
2653
2654             notToKeep->elements[0]->u.number =
2655                 odr_intdup(p->odr_out, atoi(recordIdNumber));
2656         }
2657         else
2658             notToKeep->elements[0]->u.opaque = 0;
2659         notToKeep->elements[0]->supplementalId = 0;
2660         notToKeep->elements[0]->correlationInfo = 0;
2661         notToKeep->elements[0]->record =
2662             z_ext_record(p->odr_out, syntax_oid,
2663                          record_buf, strlen(record_buf));
2664     }
2665     if (0 && apdu)
2666     {
2667        ODR print = odr_createmem(ODR_PRINT);
2668
2669        z_APDU(print, &apdu, 0, 0);
2670        odr_destroy(print);
2671     }
2672     return apdu;
2673 }
2674
2675 ZOOM_API(void)
2676     ZOOM_package_send (ZOOM_package p, const char *type)
2677 {
2678     Z_APDU *apdu = 0;
2679     ZOOM_connection c;
2680     if (!p)
2681         return;
2682     c = p->connection;
2683     odr_reset (p->odr_out);
2684     xfree (p->buf_out);
2685     p->buf_out = 0;
2686     if (!strcmp(type, "itemorder"))
2687     {
2688         apdu = create_es_package (p, VAL_ITEMORDER);
2689         if (apdu)
2690         {
2691             Z_External *r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
2692
2693             r->direct_reference =
2694                 yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2695                                        VAL_ITEMORDER);
2696             r->descriptor = 0;
2697             r->which = Z_External_itemOrder;
2698             r->indirect_reference = 0;
2699             r->u.itemOrder = encode_item_order (p);
2700
2701             apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2702         }
2703     }
2704     else if (!strcmp(type, "create"))  /* create database */
2705     {
2706         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_create,
2707                                     0, 0);
2708     }
2709     else if (!strcmp(type, "drop"))  /* drop database */
2710     {
2711         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_drop,
2712                                     0, 0);
2713     }
2714     else if (!strcmp(type, "commit"))  /* commit changes */
2715     {
2716         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_commit,
2717                                     0, 0);
2718     }
2719     else if (!strcmp(type, "update")) /* update record(s) */
2720     {
2721         apdu = create_update_package(p);
2722     }
2723     if (apdu)
2724     {
2725         if (encode_APDU(p->connection, apdu, p->odr_out) == 0)
2726         {
2727             char *buf;
2728
2729             ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_PACKAGE);
2730             task->u.package = p;
2731             buf = odr_getbuf(p->odr_out, &p->len_out, 0);
2732             p->buf_out = (char *) xmalloc (p->len_out);
2733             memcpy (p->buf_out, buf, p->len_out);
2734
2735             (p->refcount)++;
2736             if (!c->async)
2737             {
2738                 while (ZOOM_event (1, &c))
2739                     ;
2740             }
2741         }
2742     }
2743 }
2744
2745 ZOOM_API(ZOOM_package)
2746     ZOOM_connection_package (ZOOM_connection c, ZOOM_options options)
2747 {
2748     ZOOM_package p = (ZOOM_package) xmalloc (sizeof(*p));
2749
2750     p->connection = c;
2751     p->odr_out = odr_createmem (ODR_ENCODE);
2752     p->options = ZOOM_options_create_with_parent2 (options, c->options);
2753     p->refcount = 1;
2754     p->buf_out = 0;
2755     p->len_out = 0;
2756     return p;
2757 }
2758
2759 ZOOM_API(void)
2760     ZOOM_package_destroy(ZOOM_package p)
2761 {
2762     if (!p)
2763         return;
2764     (p->refcount)--;
2765     if (p->refcount == 0)
2766     {
2767         odr_destroy (p->odr_out);
2768         xfree (p->buf_out);
2769
2770         ZOOM_options_destroy (p->options);
2771         xfree (p);
2772     }
2773 }
2774
2775 ZOOM_API(const char *)
2776 ZOOM_package_option_get (ZOOM_package p, const char *key)
2777 {
2778     return ZOOM_options_get (p->options, key);
2779 }
2780
2781
2782 ZOOM_API(void)
2783 ZOOM_package_option_set (ZOOM_package p, const char *key,
2784                               const char *val)
2785 {
2786     ZOOM_options_set (p->options, key, val);
2787 }
2788
2789 static int ZOOM_connection_exec_task (ZOOM_connection c)
2790 {
2791     ZOOM_task task = c->tasks;
2792     zoom_ret ret = zoom_complete;
2793
2794     if (!task)
2795     {
2796         yaz_log (log_level, "ZOOM_connection_exec_task task=<null>");
2797         return 0;
2798     }
2799     yaz_log (log_level, "ZOOM_connection_exec_task type=%d run=%d",
2800              task->which, task->running);
2801     if (c->error != ZOOM_ERROR_NONE)
2802     {
2803         yaz_log (log_level, "remove tasks because of error = %d", c->error);
2804         ZOOM_connection_remove_tasks (c);
2805         return 0;
2806     }
2807     if (task->running)
2808     {
2809         yaz_log (log_level, "task already running");
2810         return 0;
2811     }
2812     task->running = 1;
2813     ret = zoom_complete;
2814     if (c->cs || task->which == ZOOM_TASK_CONNECT)
2815     {
2816         switch (task->which)
2817         {
2818         case ZOOM_TASK_SEARCH:
2819             if (c->proto == PROTO_HTTP)
2820                 ret = ZOOM_connection_srw_send_search(c);
2821             else
2822                 ret = ZOOM_connection_send_search(c);
2823             break;
2824         case ZOOM_TASK_RETRIEVE:
2825             if (c->proto == PROTO_HTTP)
2826                 ret = ZOOM_connection_srw_send_search(c);
2827             else
2828                 ret = send_present (c);
2829             break;
2830         case ZOOM_TASK_CONNECT:
2831             ret = do_connect(c);
2832             break;
2833         case ZOOM_TASK_SCAN:
2834             ret = send_scan(c);
2835             break;
2836         case ZOOM_TASK_PACKAGE:
2837             ret = send_package(c);
2838             break;
2839         case ZOOM_TASK_SORT:
2840             c->tasks->u.sort.resultset->r_sort_spec =
2841                 c->tasks->u.sort.q->sort_spec;
2842             ret = send_sort(c, c->tasks->u.sort.resultset);
2843             break;
2844         }
2845     }
2846     else
2847     {
2848         yaz_log (log_level, "remove tasks because no connection exist");
2849         ZOOM_connection_remove_tasks (c);
2850     }
2851     if (ret == zoom_complete)
2852     {
2853         yaz_log (log_level, "task removed (complete)");
2854         ZOOM_connection_remove_task (c);
2855         return 0;
2856     }
2857     yaz_log (log_level, "task pending");
2858     return 1;
2859 }
2860
2861 static zoom_ret send_sort_present (ZOOM_connection c)
2862 {
2863     zoom_ret r = zoom_complete;
2864
2865     if (c->tasks && c->tasks->which == ZOOM_TASK_SEARCH)
2866         r = send_sort (c, c->tasks->u.search.resultset);
2867     if (r == zoom_complete)
2868         r = send_present (c);
2869     return r;
2870 }
2871
2872 static int es_response (ZOOM_connection c,
2873                         Z_ExtendedServicesResponse *res)
2874 {
2875     if (!c->tasks || c->tasks->which != ZOOM_TASK_PACKAGE)
2876         return 0;
2877     if (res->diagnostics && res->num_diagnostics > 0)
2878         response_diag(c, res->diagnostics[0]);
2879     if (res->taskPackage &&
2880         res->taskPackage->which == Z_External_extendedService)
2881     {
2882         Z_TaskPackage *taskPackage = res->taskPackage->u.extendedService;
2883         Odr_oct *id = taskPackage->targetReference;
2884
2885         if (id)
2886             ZOOM_options_setl (c->tasks->u.package->options,
2887                                "targetReference", (char*) id->buf, id->len);
2888     }
2889     return 1;
2890 }
2891
2892
2893 static void handle_apdu (ZOOM_connection c, Z_APDU *apdu)
2894 {
2895     Z_InitResponse *initrs;
2896
2897     c->mask = 0;
2898     yaz_log (log_level, "recv APDU type=%d", apdu->which);
2899     switch(apdu->which)
2900     {
2901     case Z_APDU_initResponse:
2902         initrs = apdu->u.initResponse;
2903         ZOOM_connection_option_set(c, "serverImplementationId",
2904                                    initrs->implementationId ?
2905                                    initrs->implementationId : "");
2906         ZOOM_connection_option_set(c, "serverImplementationName",
2907                                    initrs->implementationName ?
2908                                    initrs->implementationName : "");
2909         ZOOM_connection_option_set(c, "serverImplementationVersion",
2910                                    initrs->implementationVersion ?
2911                                    initrs->implementationVersion : "");
2912         /* Set the three old options too, for old applications */
2913         ZOOM_connection_option_set(c, "targetImplementationId",
2914                                    initrs->implementationId ?
2915                                    initrs->implementationId : "");
2916         ZOOM_connection_option_set(c, "targetImplementationName",
2917                                    initrs->implementationName ?
2918                                    initrs->implementationName : "");
2919         ZOOM_connection_option_set(c, "targetImplementationVersion",
2920                                    initrs->implementationVersion ?
2921                                    initrs->implementationVersion : "");
2922         if (!*initrs->result)
2923         {
2924             set_ZOOM_error(c, ZOOM_ERROR_INIT, 0);
2925         }
2926         else
2927         {
2928             char *cookie =
2929                 yaz_oi_get_string_oidval (&apdu->u.initResponse->otherInfo,
2930                                           VAL_COOKIE, 1, 0);
2931             xfree (c->cookie_in);
2932             c->cookie_in = 0;
2933             if (cookie)
2934                 c->cookie_in = xstrdup(cookie);
2935             if (ODR_MASK_GET(initrs->options, Z_Options_namedResultSets) &&
2936                 ODR_MASK_GET(initrs->protocolVersion, Z_ProtocolVersion_3))
2937                 c->support_named_resultsets = 1;
2938             if (c->tasks)
2939             {
2940                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
2941                 ZOOM_connection_remove_task (c);
2942             }
2943             ZOOM_connection_exec_task (c);
2944         }
2945         if (ODR_MASK_GET(initrs->options, Z_Options_negotiationModel))
2946         {
2947             NMEM tmpmem = nmem_create();
2948             Z_CharSetandLanguageNegotiation *p =
2949                 yaz_get_charneg_record(initrs->otherInfo);
2950
2951             if (p)
2952             {
2953                 char *charset = NULL, *lang = NULL;
2954                 int sel;
2955
2956                 yaz_get_response_charneg(tmpmem, p, &charset, &lang, &sel);
2957                 yaz_log(log_level, "Target accepted: charset %s, "
2958                         "language %s, select %d",
2959                         charset ? charset : "none", lang ? lang : "none", sel);
2960                 if (charset)
2961                     ZOOM_connection_option_set (c, "negotiation-charset",
2962                                                 charset);
2963                 if (lang)
2964                     ZOOM_connection_option_set (c, "negotiation-lang",
2965                                                 lang);
2966
2967                 ZOOM_connection_option_set (
2968                     c,  "negotiation-charset-in-effect-for-records",
2969                     (sel != 0) ? "1" : "0");
2970                 nmem_destroy(tmpmem);
2971             }
2972         }
2973         break;
2974     case Z_APDU_searchResponse:
2975         handle_search_response (c, apdu->u.searchResponse);
2976         if (send_sort_present (c) == zoom_complete)
2977             ZOOM_connection_remove_task (c);
2978         break;
2979     case Z_APDU_presentResponse:
2980         handle_present_response (c, apdu->u.presentResponse);
2981         if (send_present (c) == zoom_complete)
2982             ZOOM_connection_remove_task (c);
2983         break;
2984     case Z_APDU_sortResponse:
2985         sort_response (c, apdu->u.sortResponse);
2986         if (send_present (c) == zoom_complete)
2987             ZOOM_connection_remove_task (c);
2988         break;
2989     case Z_APDU_scanResponse:
2990         scan_response (c, apdu->u.scanResponse);
2991         ZOOM_connection_remove_task (c);
2992         break;
2993     case Z_APDU_extendedServicesResponse:
2994         es_response (c, apdu->u.extendedServicesResponse);
2995         ZOOM_connection_remove_task (c);
2996         break;
2997     case Z_APDU_close:
2998         if (c->reconnect_ok)
2999         {
3000             do_close(c);
3001             c->tasks->running = 0;
3002             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3003         }
3004         else
3005         {
3006             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
3007             do_close(c);
3008         }
3009         break;
3010     default:
3011         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3012         do_close(c);
3013     }
3014 }
3015
3016 #if HAVE_XML2
3017 static void handle_srw_response(ZOOM_connection c,
3018                                 Z_SRW_searchRetrieveResponse *res)
3019 {
3020     ZOOM_resultset resultset = 0;
3021     int i;
3022     NMEM nmem;
3023     ZOOM_Event event;
3024
3025     if (!c->tasks)
3026         return;
3027
3028     if (c->tasks->which == ZOOM_TASK_SEARCH)
3029         resultset = c->tasks->u.search.resultset;
3030     else if (c->tasks->which == ZOOM_TASK_RETRIEVE)
3031         resultset = c->tasks->u.retrieve.resultset;
3032     else
3033         return ;
3034
3035     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
3036     ZOOM_connection_put_event(c, event);
3037
3038     resultset->size = 0;
3039
3040     yaz_log(log_level, "got SRW response OK");
3041
3042     if (res->numberOfRecords)
3043         resultset->size = *res->numberOfRecords;
3044
3045     for (i = 0; i<res->num_records; i++)
3046     {
3047         int pos;
3048
3049         Z_NamePlusRecord *npr = (Z_NamePlusRecord *)
3050             odr_malloc(c->odr_in, sizeof(Z_NamePlusRecord));
3051
3052         if (res->records[i].recordPosition &&
3053             *res->records[i].recordPosition > 0)
3054             pos = *res->records[i].recordPosition - 1;
3055         else
3056             pos = resultset->start + i;
3057
3058         npr->databaseName = 0;
3059         npr->which = Z_NamePlusRecord_databaseRecord;
3060         npr->u.databaseRecord = (Z_External *)
3061             odr_malloc(c->odr_in, sizeof(Z_External));
3062         npr->u.databaseRecord->descriptor = 0;
3063         npr->u.databaseRecord->direct_reference =
3064             yaz_oidval_to_z3950oid(c->odr_in, CLASS_RECSYN, VAL_TEXT_XML);
3065         npr->u.databaseRecord->which = Z_External_octet;
3066         npr->u.databaseRecord->u.octet_aligned = (Odr_oct *)
3067             odr_malloc(c->odr_in, sizeof(Odr_oct));
3068         npr->u.databaseRecord->u.octet_aligned->buf = (unsigned char*)
3069             res->records[i].recordData_buf;
3070         npr->u.databaseRecord->u.octet_aligned->len =
3071             npr->u.databaseRecord->u.octet_aligned->size =
3072             res->records[i].recordData_len;
3073         record_cache_add (resultset, npr, pos);
3074     }
3075     if (res->num_diagnostics > 0)
3076     {
3077         const char *uri = res->diagnostics[0].uri;
3078         if (uri)
3079         {
3080             int code = 0;
3081             const char *cp;
3082             if ((cp = strrchr(uri, '/')))
3083                 code = atoi(cp+1);
3084             set_dset_error(c, code, uri,
3085                            res->diagnostics[0].details, 0);
3086         }
3087     }
3088     nmem = odr_extract_mem(c->odr_in);
3089     nmem_transfer(resultset->odr->mem, nmem);
3090     nmem_destroy(nmem);
3091 }
3092 #endif
3093
3094 #if HAVE_XML2
3095 static void handle_http(ZOOM_connection c, Z_HTTP_Response *hres)
3096 {
3097     int ret = -1;
3098     const char *content_type = z_HTTP_header_lookup(hres->headers,
3099                                                     "Content-Type");
3100     const char *connection_head = z_HTTP_header_lookup(hres->headers,
3101                                                        "Connection");
3102     c->mask = 0;
3103     yaz_log (log_level, "handle_http");
3104
3105     if (content_type && !yaz_strcmp_del("text/xml", content_type, "; "))
3106     {
3107         Z_SOAP *soap_package = 0;
3108         ODR o = c->odr_in;
3109         Z_SOAP_Handler soap_handlers[2] = {
3110             {"http://www.loc.gov/zing/srw/", 0,
3111              (Z_SOAP_fun) yaz_srw_codec},
3112             {0, 0, 0}
3113         };
3114         ret = z_soap_codec(o, &soap_package,
3115                            &hres->content_buf, &hres->content_len,
3116                            soap_handlers);
3117         if (!ret && soap_package->which == Z_SOAP_generic &&
3118             soap_package->u.generic->no == 0)
3119         {
3120             Z_SRW_PDU *sr = (Z_SRW_PDU*) soap_package->u.generic->p;
3121             if (sr->which == Z_SRW_searchRetrieve_response)
3122                 handle_srw_response(c, sr->u.response);
3123             else
3124                 ret = -1;
3125         }
3126         else if (!ret && (soap_package->which == Z_SOAP_fault
3127                           || soap_package->which == Z_SOAP_error))
3128         {
3129             set_HTTP_error(c, hres->code,
3130                            soap_package->u.fault->fault_code,
3131                            soap_package->u.fault->fault_string);
3132         }
3133         else
3134             ret = -1;
3135     }
3136     if (ret)
3137     {
3138         if (hres->code != 200)
3139             set_HTTP_error(c, hres->code, 0, 0);
3140         else
3141             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3142         do_close (c);
3143     }
3144     ZOOM_connection_remove_task(c);
3145     if (!strcmp(hres->version, "1.0"))
3146     {
3147         /* HTTP 1.0: only if Keep-Alive we stay alive.. */
3148         if (!connection_head || strcmp(connection_head, "Keep-Alive"))
3149             do_close(c);
3150     }
3151     else
3152     {
3153         /* HTTP 1.1: only if no close we stay alive .. */
3154         if (connection_head && !strcmp(connection_head, "close"))
3155             do_close(c);
3156     }
3157 }
3158 #endif
3159
3160 static int do_read (ZOOM_connection c)
3161 {
3162     int r, more;
3163     ZOOM_Event event;
3164
3165     event = ZOOM_Event_create (ZOOM_EVENT_RECV_DATA);
3166     ZOOM_connection_put_event (c, event);
3167
3168     r = cs_get (c->cs, &c->buf_in, &c->len_in);
3169     more = cs_more(c->cs);
3170     yaz_log (log_level, "do_read len=%d more=%d", r, more);
3171     if (r == 1)
3172         return 0;
3173     if (r <= 0)
3174     {
3175         if (c->reconnect_ok)
3176         {
3177             do_close (c);
3178             c->reconnect_ok = 0;
3179             yaz_log (log_level, "reconnect read");
3180             c->tasks->running = 0;
3181             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3182         }
3183         else
3184         {
3185             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
3186             do_close (c);
3187         }
3188     }
3189     else
3190     {
3191         Z_GDU *gdu;
3192         ZOOM_Event event;
3193
3194         odr_reset (c->odr_in);
3195         odr_setbuf (c->odr_in, c->buf_in, r, 0);
3196         event = ZOOM_Event_create (ZOOM_EVENT_RECV_APDU);
3197         ZOOM_connection_put_event (c, event);
3198
3199         if (!z_GDU (c->odr_in, &gdu, 0, 0))
3200         {
3201             int x;
3202             int err = odr_geterrorx(c->odr_in, &x);
3203             char msg[60];
3204             const char *element = odr_getelement(c->odr_in);
3205             sprintf (msg, "ODR code %d:%d element=%-20s",
3206                      err, x, element ? element : "<unknown>");
3207             set_ZOOM_error(c, ZOOM_ERROR_DECODE, msg);
3208             do_close (c);
3209         }
3210         else if (gdu->which == Z_GDU_Z3950)
3211             handle_apdu (c, gdu->u.z3950);
3212         else if (gdu->which == Z_GDU_HTTP_Response)
3213         {
3214 #if HAVE_XML2
3215             handle_http (c, gdu->u.HTTP_Response);
3216 #else
3217             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3218             do_close (c);
3219 #endif
3220         }
3221         c->reconnect_ok = 0;
3222     }
3223     return 1;
3224 }
3225
3226 static zoom_ret do_write_ex (ZOOM_connection c, char *buf_out, int len_out)
3227 {
3228     int r;
3229     ZOOM_Event event;
3230
3231     event = ZOOM_Event_create(ZOOM_EVENT_SEND_DATA);
3232     ZOOM_connection_put_event (c, event);
3233
3234     yaz_log (log_level, "do_write_ex len=%d", len_out);
3235     if ((r = cs_put(c->cs, buf_out, len_out)) < 0)
3236     {
3237         if (c->reconnect_ok)
3238         {
3239             do_close (c);
3240             c->reconnect_ok = 0;
3241             yaz_log (log_level, "reconnect write");
3242             c->tasks->running = 0;
3243             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3244             return zoom_pending;
3245         }
3246         if (c->state == STATE_CONNECTING)
3247             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
3248         else
3249             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
3250         do_close (c);
3251         return zoom_complete;
3252     }
3253     else if (r == 1)
3254     {
3255         c->mask = ZOOM_SELECT_EXCEPT;
3256         if (c->cs->io_pending & CS_WANT_WRITE)
3257             c->mask += ZOOM_SELECT_WRITE;
3258         if (c->cs->io_pending & CS_WANT_READ)
3259             c->mask += ZOOM_SELECT_READ;
3260         yaz_log (log_level, "do_write_ex 1 mask=%d", c->mask);
3261     }
3262     else
3263     {
3264         c->mask = ZOOM_SELECT_READ|ZOOM_SELECT_EXCEPT;
3265         yaz_log (log_level, "do_write_ex 2 mask=%d", c->mask);
3266     }
3267     return zoom_pending;
3268 }
3269
3270 static zoom_ret do_write(ZOOM_connection c)
3271 {
3272     return do_write_ex (c, c->buf_out, c->len_out);
3273 }
3274
3275
3276 ZOOM_API(const char *)
3277 ZOOM_connection_option_get (ZOOM_connection c, const char *key)
3278 {
3279     return ZOOM_options_get (c->options, key);
3280 }
3281
3282 ZOOM_API(void)
3283 ZOOM_connection_option_set (ZOOM_connection c, const char *key,
3284                             const char *val)
3285 {
3286     ZOOM_options_set (c->options, key, val);
3287 }
3288
3289 ZOOM_API(void)
3290 ZOOM_connection_option_setl (ZOOM_connection c, const char *key,
3291                              const char *val, int len)
3292 {
3293     ZOOM_options_setl (c->options, key, val, len);
3294 }
3295
3296 ZOOM_API(const char *)
3297 ZOOM_resultset_option_get (ZOOM_resultset r, const char *key)
3298 {
3299     return ZOOM_options_get (r->options, key);
3300 }
3301
3302 ZOOM_API(void)
3303 ZOOM_resultset_option_set (ZOOM_resultset r, const char *key,
3304                                   const char *val)
3305 {
3306     ZOOM_options_set (r->options, key, val);
3307 }
3308
3309
3310 ZOOM_API(int)
3311 ZOOM_connection_errcode (ZOOM_connection c)
3312 {
3313     return ZOOM_connection_error (c, 0, 0);
3314 }
3315
3316 ZOOM_API(const char *)
3317 ZOOM_connection_errmsg (ZOOM_connection c)
3318 {
3319     const char *msg;
3320     ZOOM_connection_error (c, &msg, 0);
3321     return msg;
3322 }
3323
3324 ZOOM_API(const char *)
3325 ZOOM_connection_addinfo (ZOOM_connection c)
3326 {
3327     const char *addinfo;
3328     ZOOM_connection_error (c, 0, &addinfo);
3329     return addinfo;
3330 }
3331
3332 ZOOM_API(const char *)
3333 ZOOM_diag_str (int error)
3334 {
3335     switch (error)
3336     {
3337     case ZOOM_ERROR_NONE:
3338         return "No error";
3339     case ZOOM_ERROR_CONNECT:
3340         return "Connect failed";
3341     case ZOOM_ERROR_MEMORY:
3342         return "Out of memory";
3343     case ZOOM_ERROR_ENCODE:
3344         return "Encoding failed";
3345     case ZOOM_ERROR_DECODE:
3346         return "Decoding failed";
3347     case ZOOM_ERROR_CONNECTION_LOST:
3348         return "Connection lost";
3349     case ZOOM_ERROR_INIT:
3350         return "Init rejected";
3351     case ZOOM_ERROR_INTERNAL:
3352         return "Internal failure";
3353     case ZOOM_ERROR_TIMEOUT:
3354         return "Timeout";
3355     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
3356         return "Unsupported protocol";
3357     case ZOOM_ERROR_UNSUPPORTED_QUERY:
3358         return "Unsupported query type";
3359     case ZOOM_ERROR_INVALID_QUERY:
3360         return "Invalid query";
3361     default:
3362         return diagbib1_str (error);
3363     }
3364 }
3365
3366 ZOOM_API(int)
3367 ZOOM_connection_error_x (ZOOM_connection c, const char **cp,
3368                          const char **addinfo, const char **diagset)
3369 {
3370     int error = c->error;
3371     if (cp)
3372     {
3373         if (!c->diagset || !strcmp(c->diagset, "ZOOM"))
3374             *cp = ZOOM_diag_str(error);
3375         else if (!strcmp(c->diagset, "HTTP"))
3376             *cp = z_HTTP_errmsg(c->error);
3377         else if (!strcmp(c->diagset, "Bib-1"))
3378             *cp = ZOOM_diag_str(error);
3379         else if (!strcmp(c->diagset, "info:srw/diagnostic/1"))
3380             *cp = yaz_diag_srw_str(c->error);
3381         else
3382             *cp = "Unknown error and diagnostic set";
3383     }
3384     if (addinfo)
3385         *addinfo = c->addinfo ? c->addinfo : "";
3386     if (diagset)
3387         *diagset = c->diagset ? c->diagset : "";
3388     return c->error;
3389 }
3390
3391 ZOOM_API(int)
3392 ZOOM_connection_error (ZOOM_connection c, const char **cp,
3393                        const char **addinfo)
3394 {
3395     return ZOOM_connection_error_x(c, cp, addinfo, 0);
3396 }
3397
3398 static int ZOOM_connection_do_io(ZOOM_connection c, int mask)
3399 {
3400     ZOOM_Event event = 0;
3401     int r = cs_look(c->cs);
3402     yaz_log (log_level, "ZOOM_connection_do_io c=%p mask=%d cs_look=%d",
3403              c, mask, r);
3404
3405     if (r == CS_NONE)
3406     {
3407         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
3408         set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
3409         do_close (c);
3410         ZOOM_connection_put_event (c, event);
3411     }
3412     else if (r == CS_CONNECT)
3413     {
3414         int ret;
3415         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
3416
3417         ret = cs_rcvconnect (c->cs);
3418         yaz_log (log_level, "cs_rcvconnect returned %d", ret);
3419         if (ret == 1)
3420         {
3421             c->mask = ZOOM_SELECT_EXCEPT;
3422             if (c->cs->io_pending & CS_WANT_WRITE)
3423                 c->mask += ZOOM_SELECT_WRITE;
3424             if (c->cs->io_pending & CS_WANT_READ)
3425                 c->mask += ZOOM_SELECT_READ;
3426             ZOOM_connection_put_event (c, event);
3427         }
3428         else if (ret == 0)
3429         {
3430             ZOOM_connection_put_event (c, event);
3431             get_cert(c);
3432             if (c->proto == PROTO_Z3950)
3433                 ZOOM_connection_send_init(c);
3434             else
3435             {
3436                 /* no init request for SRW .. */
3437                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
3438                 ZOOM_connection_remove_task (c);
3439                 c->mask = 0;
3440                 ZOOM_connection_exec_task (c);
3441             }
3442             c->state = STATE_ESTABLISHED;
3443         }
3444         else
3445         {
3446             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
3447             do_close (c);
3448             ZOOM_connection_put_event (c, event);
3449         }
3450     }
3451     else
3452     {
3453         if (mask & ZOOM_SELECT_READ)
3454             do_read (c);
3455         if (c->cs && (mask & ZOOM_SELECT_WRITE))
3456             do_write (c);
3457     }
3458     return 1;
3459 }
3460
3461 ZOOM_API(int)
3462 ZOOM_connection_last_event(ZOOM_connection cs)
3463 {
3464     if (!cs)
3465         return ZOOM_EVENT_NONE;
3466     return cs->last_event;
3467 }
3468
3469 ZOOM_API(int)
3470 ZOOM_event (int no, ZOOM_connection *cs)
3471 {
3472     int timeout = 30;      /* default timeout in seconds */
3473     int timeout_set = 0;   /* whether it was overriden at all */
3474 #if HAVE_SYS_POLL_H
3475     struct pollfd pollfds[1024];
3476     ZOOM_connection poll_cs[1024];
3477 #else
3478     struct timeval tv;
3479     fd_set input, output, except;
3480 #endif
3481     int i, r, nfds;
3482     int max_fd = 0;
3483
3484     for (i = 0; i<no; i++)
3485     {
3486         ZOOM_connection c = cs[i];
3487         ZOOM_Event event;
3488         if (c && (event = ZOOM_connection_get_event(c)))
3489         {
3490             ZOOM_Event_destroy (event);
3491             return i+1;
3492         }
3493     }
3494     for (i = 0; i<no; i++)
3495     {
3496         ZOOM_connection c = cs[i];
3497         ZOOM_Event event;
3498         if (c && ZOOM_connection_exec_task (c))
3499         {
3500             if ((event = ZOOM_connection_get_event(c)))
3501             {
3502                 ZOOM_Event_destroy (event);
3503                 return i+1;
3504             }
3505         }
3506     }
3507 #if HAVE_SYS_POLL_H
3508
3509 #else
3510     FD_ZERO (&input);
3511     FD_ZERO (&output);
3512     FD_ZERO (&except);
3513 #endif
3514     nfds = 0;
3515     for (i = 0; i<no; i++)
3516     {
3517         ZOOM_connection c = cs[i];
3518         int fd, mask;
3519         int this_timeout;
3520
3521         if (!c)
3522             continue;
3523         fd = z3950_connection_socket(c);
3524         mask = z3950_connection_mask(c);
3525
3526         if (fd == -1)
3527             continue;
3528         if (max_fd < fd)
3529             max_fd = fd;
3530
3531         /* -1 is used for indefinite timeout (no timeout), so -2 here. */
3532         this_timeout = ZOOM_options_get_int (c->options, "timeout", -2);
3533         if (this_timeout != -2)
3534         {
3535             /* ensure the minimum timeout is used */
3536             if (!timeout_set)
3537                 timeout = this_timeout;
3538             else if (this_timeout != -1 && this_timeout < timeout)
3539                 timeout = this_timeout;
3540             timeout_set = 1;
3541         }
3542 #if HAVE_SYS_POLL_H
3543         if (mask)
3544         {
3545             short poll_events = 0;
3546
3547             if (mask & ZOOM_SELECT_READ)
3548                 poll_events += POLLIN;
3549             if (mask & ZOOM_SELECT_WRITE)
3550                 poll_events += POLLOUT;
3551             if (mask & ZOOM_SELECT_EXCEPT)
3552                 poll_events += POLLERR;
3553             pollfds[nfds].fd = fd;
3554             pollfds[nfds].events = poll_events;
3555             pollfds[nfds].revents = 0;
3556             poll_cs[nfds] = c;
3557             nfds++;
3558         }
3559 #else
3560         if (mask & ZOOM_SELECT_READ)
3561         {
3562             FD_SET (fd, &input);
3563             nfds++;
3564         }
3565         if (mask & ZOOM_SELECT_WRITE)
3566         {
3567             FD_SET (fd, &output);
3568             nfds++;
3569         }
3570         if (mask & ZOOM_SELECT_EXCEPT)
3571         {
3572             FD_SET (fd, &except);
3573             nfds++;
3574         }
3575 #endif
3576     }
3577     if (!nfds)
3578         return 0;
3579
3580 #if HAVE_SYS_POLL_H
3581     r = poll (pollfds, nfds, (timeout == -1 ? -1 : timeout * 1000));
3582     for (i = 0; i<nfds; i++)
3583     {
3584         ZOOM_connection c = poll_cs[i];
3585         if (r && c->mask)
3586         {
3587             int mask = 0;
3588             if (pollfds[i].revents & POLLIN)
3589                 mask += ZOOM_SELECT_READ;
3590             if (pollfds[i].revents & POLLOUT)
3591                 mask += ZOOM_SELECT_WRITE;
3592             if (pollfds[i].revents & POLLERR)
3593                 mask += ZOOM_SELECT_EXCEPT;
3594             if (mask)
3595                 ZOOM_connection_do_io(c, mask);
3596         }
3597         else if (r == 0 && c->mask)
3598         {
3599             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
3600             /* timeout and this connection was waiting */
3601             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
3602             do_close (c);
3603             ZOOM_connection_put_event(c, event);
3604         }
3605     }
3606 #else
3607     tv.tv_sec = timeout;
3608     tv.tv_usec = 0;
3609     yaz_log (log_level, "select start");
3610     r = select (max_fd+1, &input, &output, &except, (timeout == -1 ? 0 : &tv));
3611     yaz_log (log_level, "select stop, returned r=%d", r);
3612     for (i = 0; i<no; i++)
3613     {
3614         ZOOM_connection c = cs[i];
3615         int fd, mask;
3616
3617         if (!c)
3618             continue;
3619         fd = z3950_connection_socket(c);
3620         mask = 0;
3621         if (r && c->mask)
3622         {
3623             /* no timeout and real socket */
3624             if (FD_ISSET(fd, &input))
3625                 mask += ZOOM_SELECT_READ;
3626             if (FD_ISSET(fd, &output))
3627                 mask += ZOOM_SELECT_WRITE;
3628             if (FD_ISSET(fd, &except))
3629                 mask += ZOOM_SELECT_EXCEPT;
3630             if (mask)
3631                 ZOOM_connection_do_io(c, mask);
3632         }
3633         if (r == 0 && c->mask)
3634         {
3635             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
3636             /* timeout and this connection was waiting */
3637             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
3638             do_close (c);
3639             yaz_log (log_level, "timeout");
3640             ZOOM_connection_put_event(c, event);
3641         }
3642     }
3643 #endif
3644     for (i = 0; i<no; i++)
3645     {
3646         ZOOM_connection c = cs[i];
3647         ZOOM_Event event;
3648         if (c && (event = ZOOM_connection_get_event(c)))
3649         {
3650             ZOOM_Event_destroy (event);
3651             return i+1;
3652         }
3653     }
3654     return 0;
3655 }