zutil/zoom-c.c

   1 /*
   2  * $Id: zoom-c.c,v 1.3 2002-09-25 20:41:02 adam Exp $
   3  *
   4  * ZOOM layer for C, connections, result sets, queries.
   5  */
   6 #include <assert.h>
   7 #include <yaz/xmalloc.h>
   8 #include <yaz/otherinfo.h>
   9 #include <yaz/log.h>
  10 #include <yaz/pquery.h>
  11 #include <yaz/diagbib1.h>
  12 #include <yaz/charneg.h>
  13 #include <yaz/ill.h>
  14
  15 #include "zoom-p.h"
  16
  17 #if HAVE_SYS_POLL_H
  18 #include <sys/poll.h>
  19 #endif
  20
  21 typedef enum {
  22     zoom_pending,
  23     zoom_complete
  24 } zoom_ret;
  25
  26
  27 static zoom_ret ZOOM_connection_send_init (ZOOM_connection c);
  28 static zoom_ret do_write_ex (ZOOM_connection c, char *buf_out, int len_out);
  29
  30 static ZOOM_Event ZOOM_Event_create (int kind)
  31 {
  32     ZOOM_Event event = (ZOOM_Event) xmalloc (sizeof(*event));
  33     event->kind = kind;
  34     event->next = 0;
  35     event->prev = 0;
  36     return event;
  37 }
  38
  39 static void ZOOM_Event_destroy (ZOOM_Event event)
  40 {
  41     xfree (event);
  42 }
  43
  44 static void ZOOM_connection_put_event (ZOOM_connection c, ZOOM_Event event)
  45 {
  46     if (c->m_queue_back)
  47     {
  48         c->m_queue_back->prev = event;
  49         assert (c->m_queue_front);
  50     }
  51     else
  52     {
  53         assert (!c->m_queue_front);
  54         c->m_queue_front = event;
  55     }
  56     event->next = c->m_queue_back;
  57     event->prev = 0;
  58     c->m_queue_back = event;
  59 }
  60
  61 static ZOOM_Event ZOOM_connection_get_event(ZOOM_connection c)
  62 {
  63     ZOOM_Event event = c->m_queue_front;
  64     if (!event)
  65         return 0;
  66     assert (c->m_queue_back);
  67     c->m_queue_front = event->prev;
  68     if (c->m_queue_front)
  69     {
  70         assert (c->m_queue_back);
  71         c->m_queue_front->next = 0;
  72     }
  73     else
  74         c->m_queue_back = 0;
  75     c->last_event = event->kind;
  76     return event;
  77 }
  78
  79 static void clear_error (ZOOM_connection c)
  80 {
  81
  82     switch (c->error)
  83     {
  84     case ZOOM_ERROR_CONNECT:
  85     case ZOOM_ERROR_MEMORY:
  86     case ZOOM_ERROR_DECODE:
  87     case ZOOM_ERROR_CONNECTION_LOST:
  88     case ZOOM_ERROR_INIT:
  89     case ZOOM_ERROR_INTERNAL:
  90         break;
  91     default:
  92         c->error = ZOOM_ERROR_NONE;
  93         xfree (c->addinfo);
  94         c->addinfo = 0;
  95     }
  96 }
  97
  98 ZOOM_task ZOOM_connection_add_task (ZOOM_connection c, int which)
  99 {
 100     ZOOM_task *taskp = &c->tasks;
 101     while (*taskp)
 102         taskp = &(*taskp)->next;
 103     *taskp = (ZOOM_task) xmalloc (sizeof(**taskp));
 104     (*taskp)->running = 0;
 105     (*taskp)->which = which;
 106     (*taskp)->next = 0;
 107     clear_error (c);
 108     return *taskp;
 109 }
 110
 111 ZOOM_task ZOOM_connection_insert_task (ZOOM_connection c, int which)
 112 {
 113     ZOOM_task task = (ZOOM_task) xmalloc (sizeof(*task));
 114
 115     task->next = c->tasks;
 116     c->tasks = task;
 117
 118     task->running = 0;
 119     task->which = which;
 120     clear_error (c);
 121     return task;
 122 }
 123
 124 void ZOOM_connection_remove_task (ZOOM_connection c)
 125 {
 126     ZOOM_task task = c->tasks;
 127
 128     if (task)
 129     {
 130         c->tasks = task->next;
 131         switch (task->which)
 132         {
 133         case ZOOM_TASK_SEARCH:
 134             ZOOM_resultset_destroy (task->u.search.resultset);
 135             break;
 136         case ZOOM_TASK_RETRIEVE:
 137             ZOOM_resultset_destroy (task->u.retrieve.resultset);
 138             break;
 139         case ZOOM_TASK_CONNECT:
 140             break;
 141         case ZOOM_TASK_SCAN:
 142             ZOOM_scanset_destroy (task->u.scan.scan);
 143             break;
 144         case ZOOM_TASK_PACKAGE:
 145             ZOOM_package_destroy (task->u.package);
 146             break;
 147         default:
 148             assert (0);
 149         }
 150         xfree (task);
 151     }
 152 }
 153
 154 void ZOOM_connection_remove_tasks (ZOOM_connection c)
 155 {
 156     while (c->tasks)
 157         ZOOM_connection_remove_task(c);
 158 }
 159
 160 static ZOOM_record record_cache_lookup (ZOOM_resultset r, int pos);
 161
 162 ZOOM_API(ZOOM_connection)
 163 ZOOM_connection_create (ZOOM_options options)
 164 {
 165     ZOOM_connection c = (ZOOM_connection) xmalloc (sizeof(*c));
 166
 167     c->cs = 0;
 168     c->mask = 0;
 169     c->reconnect_ok = 0;
 170     c->state = STATE_IDLE;
 171     c->error = ZOOM_ERROR_NONE;
 172     c->addinfo = 0;
 173     c->buf_in = 0;
 174     c->len_in = 0;
 175     c->buf_out = 0;
 176     c->len_out = 0;
 177     c->resultsets = 0;
 178
 179     c->options = ZOOM_options_create_with_parent(options);
 180
 181     c->host_port = 0;
 182     c->proxy = 0;
 183
 184     c->charset = c->lang = 0;
 185
 186     c->cookie_out = 0;
 187     c->cookie_in = 0;
 188     c->client_IP = 0;
 189     c->tasks = 0;
 190
 191     c->odr_in = odr_createmem (ODR_DECODE);
 192     c->odr_out = odr_createmem (ODR_ENCODE);
 193
 194     c->async = 0;
 195     c->support_named_resultsets = 0;
 196     c->last_event = ZOOM_EVENT_NONE;
 197
 198     c->m_queue_front = 0;
 199     c->m_queue_back = 0;
 200     return c;
 201 }
 202
 203 /* set database names. Take local databases (if set); otherwise
 204    take databases given in ZURL (if set); otherwise use Default */
 205 static char **set_DatabaseNames (ZOOM_connection con, ZOOM_options options,
 206                                  int *num)
 207 {
 208     char **databaseNames;
 209     const char *c;
 210     int no = 2;
 211     const char *cp = ZOOM_options_get (options, "databaseName");
 212
 213     if (!cp || !*cp)
 214     {
 215         if (strncmp (con->host_port, "unix:", 5) == 0)
 216             cp = strchr (con->host_port+5, ':');
 217         else
 218             cp = strchr (con->host_port, '/');
 219         if (cp)
 220             cp++;
 221     }
 222     if (cp)
 223     {
 224         c = cp;
 225         while ((c = strchr(c, '+')))
 226         {
 227             c++;
 228             no++;
 229         }
 230     }
 231     else
 232         cp = "Default";
 233     databaseNames = (char**)
 234         odr_malloc (con->odr_out, no * sizeof(*databaseNames));
 235     no = 0;
 236     while (*cp)
 237     {
 238         c = strchr (cp, '+');
 239         if (!c)
 240             c = cp + strlen(cp);
 241         else if (c == cp)
 242         {
 243             cp++;
 244             continue;
 245         }
 246         /* cp ptr to first char of db name, c is char
 247            following db name */
 248         databaseNames[no] = (char*) odr_malloc (con->odr_out, 1+c-cp);
 249         memcpy (databaseNames[no], cp, c-cp);
 250         databaseNames[no++][c-cp] = '\0';
 251         cp = c;
 252         if (*cp)
 253             cp++;
 254     }
 255     databaseNames[no] = NULL;
 256     *num = no;
 257     return databaseNames;
 258 }
 259
 260 ZOOM_API(ZOOM_connection)
 261 ZOOM_connection_new (const char *host, int portnum)
 262 {
 263     ZOOM_connection c = ZOOM_connection_create (0);
 264
 265     ZOOM_connection_connect (c, host, portnum);
 266     return c;
 267 }
 268
 269 ZOOM_API(void)
 270 ZOOM_connection_connect(ZOOM_connection c,
 271                         const char *host, int portnum)
 272 {
 273     const char *val;
 274     ZOOM_task task;
 275
 276     if (c->cs)
 277     {
 278         yaz_log (LOG_DEBUG, "reconnect");
 279         c->reconnect_ok = 1;
 280         return;
 281     }
 282     yaz_log(LOG_DEBUG, "connect");
 283     xfree (c->proxy);
 284     val = ZOOM_options_get (c->options, "proxy");
 285     if (val && *val)
 286         c->proxy = xstrdup (val);
 287     else
 288         c->proxy = 0;
 289
 290     xfree (c->charset);
 291     val = ZOOM_options_get (c->options, "charset");
 292     if (val && *val)
 293         c->charset = xstrdup (val);
 294     else
 295         c->charset = 0;
 296
 297     xfree (c->lang);
 298     val = ZOOM_options_get (c->options, "lang");
 299     if (val && *val)
 300         c->lang = xstrdup (val);
 301     else
 302         c->lang = 0;
 303
 304     xfree (c->host_port);
 305     if (portnum)
 306     {
 307         char hostn[128];
 308         sprintf (hostn, "%.80s:%d", host, portnum);
 309         c->host_port = xstrdup(hostn);
 310     }
 311     else
 312         c->host_port = xstrdup(host);
 313
 314     ZOOM_options_set(c->options, "host", c->host_port);
 315
 316     val = ZOOM_options_get (c->options, "cookie");
 317     if (val && *val)
 318         c->cookie_out = xstrdup (val);
 319
 320     val = ZOOM_options_get (c->options, "clientIP");
 321     if (val && *val)
 322         c->client_IP = xstrdup (val);
 323
 324     c->async = ZOOM_options_get_bool (c->options, "async", 0);
 325
 326     c->error = ZOOM_ERROR_NONE;
 327
 328     task = ZOOM_connection_add_task (c, ZOOM_TASK_CONNECT);
 329
 330     if (!c->async)
 331     {
 332         while (ZOOM_event (1, &c))
 333             ;
 334     }
 335 }
 336
 337 ZOOM_API(ZOOM_query)
 338 ZOOM_query_create(void)
 339 {
 340     ZOOM_query s = (ZOOM_query) xmalloc (sizeof(*s));
 341
 342     s->refcount = 1;
 343     s->query = 0;
 344     s->sort_spec = 0;
 345     s->odr = odr_createmem (ODR_ENCODE);
 346
 347     return s;
 348 }
 349
 350 ZOOM_API(void)
 351 ZOOM_query_destroy(ZOOM_query s)
 352 {
 353     if (!s)
 354         return;
 355
 356     (s->refcount)--;
 357     yaz_log (LOG_DEBUG, "ZOOM_query_destroy count=%d", s->refcount);
 358     if (s->refcount == 0)
 359     {
 360         odr_destroy (s->odr);
 361         xfree (s);
 362     }
 363 }
 364
 365 ZOOM_API(int)
 366 ZOOM_query_prefix(ZOOM_query s, const char *str)
 367 {
 368     s->query = (Z_Query *) odr_malloc (s->odr, sizeof(*s->query));
 369     s->query->which = Z_Query_type_1;
 370     s->query->u.type_1 =  p_query_rpn(s->odr, PROTO_Z3950, str);
 371     if (!s->query->u.type_1)
 372         return -1;
 373     return 0;
 374 }
 375
 376 ZOOM_API(int)
 377 ZOOM_query_sortby(ZOOM_query s, const char *criteria)
 378 {
 379     s->sort_spec = yaz_sort_spec (s->odr, criteria);
 380     if (!s->sort_spec)
 381         return -1;
 382     return 0;
 383 }
 384
 385 static zoom_ret do_write(ZOOM_connection c);
 386
 387 ZOOM_API(void)
 388 ZOOM_connection_destroy(ZOOM_connection c)
 389 {
 390     ZOOM_resultset r;
 391     if (!c)
 392         return;
 393     if (c->cs)
 394         cs_close (c->cs);
 395     for (r = c->resultsets; r; r = r->next)
 396         r->connection = 0;
 397
 398     xfree (c->buf_in);
 399     xfree (c->addinfo);
 400     odr_destroy (c->odr_in);
 401     odr_destroy (c->odr_out);
 402     ZOOM_options_destroy (c->options);
 403     ZOOM_connection_remove_tasks (c);
 404     xfree (c->host_port);
 405     xfree (c->proxy);
 406     xfree (c->charset);
 407     xfree (c->lang);
 408     xfree (c->cookie_out);
 409     xfree (c->cookie_in);
 410     xfree (c->client_IP);
 411     xfree (c);
 412 }
 413
 414 void ZOOM_resultset_addref (ZOOM_resultset r)
 415 {
 416     if (r)
 417     {
 418         (r->refcount)++;
 419         yaz_log (LOG_DEBUG, "ZOOM_resultset_addref r=%p count=%d",
 420                  r, r->refcount);
 421     }
 422 }
 423 ZOOM_resultset ZOOM_resultset_create ()
 424 {
 425     ZOOM_resultset r = (ZOOM_resultset) xmalloc (sizeof(*r));
 426
 427     yaz_log (LOG_DEBUG, "ZOOM_resultset_create r = %p", r);
 428     r->refcount = 1;
 429     r->size = 0;
 430     r->odr = odr_createmem (ODR_ENCODE);
 431     r->start = 0;
 432     r->piggyback = 1;
 433     r->setname = 0;
 434     r->count = 0;
 435     r->record_cache = 0;
 436     r->r_sort_spec = 0;
 437     r->r_query = 0;
 438     r->search = 0;
 439     r->connection = 0;
 440     r->next = 0;
 441     return r;
 442 }
 443
 444 ZOOM_API(ZOOM_resultset)
 445 ZOOM_connection_search_pqf(ZOOM_connection c, const char *q)
 446 {
 447     ZOOM_resultset r;
 448     ZOOM_query s = ZOOM_query_create();
 449
 450     ZOOM_query_prefix (s, q);
 451
 452     r = ZOOM_connection_search (c, s);
 453     ZOOM_query_destroy (s);
 454     return r;
 455 }
 456
 457 ZOOM_API(ZOOM_resultset)
 458 ZOOM_connection_search(ZOOM_connection c, ZOOM_query q)
 459 {
 460     ZOOM_resultset r = ZOOM_resultset_create ();
 461     ZOOM_task task;
 462     const char *cp;
 463
 464     r->r_sort_spec = q->sort_spec;
 465     r->r_query = q->query;
 466     r->search = q;
 467
 468     r->options = ZOOM_options_create_with_parent(c->options);
 469
 470     r->start = ZOOM_options_get_int(r->options, "start", 0);
 471     r->count = ZOOM_options_get_int(r->options, "count", 0);
 472     r->piggyback = ZOOM_options_get_bool (r->options, "piggyback", 1);
 473     cp = ZOOM_options_get (r->options, "setname");
 474     if (cp)
 475         r->setname = xstrdup (cp);
 476
 477     r->connection = c;
 478
 479     r->next = c->resultsets;
 480     c->resultsets = r;
 481
 482     task = ZOOM_connection_add_task (c, ZOOM_TASK_SEARCH);
 483     task->u.search.resultset = r;
 484     ZOOM_resultset_addref (r);
 485
 486     (q->refcount)++;
 487
 488     if (!c->async)
 489     {
 490         while (ZOOM_event (1, &c))
 491             ;
 492     }
 493     return r;
 494 }
 495
 496 ZOOM_API(void)
 497 ZOOM_resultset_destroy(ZOOM_resultset r)
 498 {
 499     if (!r)
 500         return;
 501     (r->refcount)--;
 502     yaz_log (LOG_DEBUG, "ZOOM_resultset_destroy r = %p count=%d",
 503              r, r->refcount);
 504     if (r->refcount == 0)
 505     {
 506         ZOOM_record_cache rc;
 507
 508         for (rc = r->record_cache; rc; rc = rc->next)
 509             if (rc->rec.wrbuf_marc)
 510                 wrbuf_free (rc->rec.wrbuf_marc, 1);
 511         if (r->connection)
 512         {
 513             /* remove ourselves from the resultsets in connection */
 514             ZOOM_resultset *rp = &r->connection->resultsets;
 515             while (1)
 516             {
 517                 assert (*rp);   /* we must be in this list!! */
 518                 if (*rp == r)
 519                 {   /* OK, we're here - take us out of it */
 520                     *rp = (*rp)->next;
 521                     break;
 522                 }
 523                 rp = &(*rp)->next;
 524             }
 525         }
 526         ZOOM_query_destroy (r->search);
 527         ZOOM_options_destroy (r->options);
 528         odr_destroy (r->odr);
 529         xfree (r->setname);
 530         xfree (r);
 531     }
 532 }
 533
 534 ZOOM_API(size_t)
 535 ZOOM_resultset_size (ZOOM_resultset r)
 536 {
 537     return r->size;
 538 }
 539
 540 static void do_close (ZOOM_connection c)
 541 {
 542     if (c->cs)
 543         cs_close(c->cs);
 544     c->cs = 0;
 545     c->mask = 0;
 546     c->state = STATE_IDLE;
 547 }
 548
 549 static void ZOOM_resultset_retrieve (ZOOM_resultset r,
 550                                      int force_sync, int start, int count)
 551 {
 552     ZOOM_task task;
 553     ZOOM_connection c;
 554
 555     if (!r)
 556         return;
 557     c = r->connection;
 558     if (!c)
 559         return;
 560     task = ZOOM_connection_add_task (c, ZOOM_TASK_RETRIEVE);
 561     task->u.retrieve.resultset = r;
 562     task->u.retrieve.start = start;
 563     task->u.retrieve.count = count;
 564
 565     ZOOM_resultset_addref (r);
 566
 567     if (!r->connection->async || force_sync)
 568         while (r->connection && ZOOM_event (1, &r->connection))
 569             ;
 570 }
 571
 572 ZOOM_API(void)
 573 ZOOM_resultset_records (ZOOM_resultset r, ZOOM_record *recs,
 574                         size_t start, size_t count)
 575 {
 576     int force_present = 0;
 577
 578     if (!r)
 579         return ;
 580     if (count && recs)
 581         force_present = 1;
 582     ZOOM_resultset_retrieve (r, force_present, start, count);
 583     if (force_present)
 584     {
 585         size_t i;
 586         for (i = 0; i< count; i++)
 587             recs[i] = ZOOM_resultset_record_immediate (r, i+start);
 588     }
 589 }
 590
 591 static zoom_ret do_connect (ZOOM_connection c)
 592 {
 593     void *add;
 594     const char *effective_host;
 595
 596     if (c->proxy)
 597         effective_host = c->proxy;
 598     else
 599         effective_host = c->host_port;
 600
 601     yaz_log (LOG_DEBUG, "do_connect host=%s", effective_host);
 602
 603     assert (!c->cs);
 604     c->cs = cs_create_host (effective_host, 0, &add);
 605
 606     if (c->cs)
 607     {
 608         int ret = cs_connect (c->cs, add);
 609         if (ret == 0)
 610         {
 611             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
 612             ZOOM_connection_put_event(c, event);
 613             ZOOM_connection_send_init(c);
 614             c->state = STATE_ESTABLISHED;
 615             return zoom_pending;
 616         }
 617         else if (ret > 0)
 618         {
 619             c->state = STATE_CONNECTING;
 620             c->mask = ZOOM_SELECT_EXCEPT;
 621             if (c->cs->io_pending & CS_WANT_WRITE)
 622                 c->mask += ZOOM_SELECT_WRITE;
 623             if (c->cs->io_pending & CS_WANT_READ)
 624                 c->mask += ZOOM_SELECT_READ;
 625             return zoom_pending;
 626         }
 627     }
 628     c->state = STATE_IDLE;
 629     c->error = ZOOM_ERROR_CONNECT;
 630     return zoom_complete;
 631 }
 632
 633 int z3950_connection_socket(ZOOM_connection c)
 634 {
 635     if (c->cs)
 636         return cs_fileno(c->cs);
 637     return -1;
 638 }
 639
 640 int z3950_connection_mask(ZOOM_connection c)
 641 {
 642     if (c->cs)
 643         return c->mask;
 644     return 0;
 645 }
 646
 647 static void otherInfo_attach (ZOOM_connection c, Z_APDU *a, ODR out)
 648 {
 649     int i;
 650     for (i = 0; i<200; i++)
 651     {
 652         size_t len;
 653         Z_OtherInformation **oi;
 654         char buf[80];
 655         const char *val;
 656         const char *cp;
 657         int oidval;
 658
 659         sprintf (buf, "otherInfo%d", i);
 660         val = ZOOM_options_get (c->options, buf);
 661         if (!val)
 662             break;
 663         cp = strchr (val, ':');
 664         if (!cp)
 665             continue;
 666         len = cp - val;
 667         if (len >= sizeof(buf))
 668             len = sizeof(buf)-1;
 669         memcpy (buf, val, len);
 670         buf[len] = '\0';
 671         oidval = oid_getvalbyname (buf);
 672         if (oidval == VAL_NONE)
 673             continue;
 674
 675         yaz_oi_APDU(a, &oi);
 676         yaz_oi_set_string_oidval(oi, out, oidval, 1, cp+1);
 677     }
 678 }
 679
 680 static int encode_APDU(ZOOM_connection c, Z_APDU *a, ODR out)
 681 {
 682     assert (a);
 683     if (c->cookie_out)
 684     {
 685         Z_OtherInformation **oi;
 686         yaz_oi_APDU(a, &oi);
 687         yaz_oi_set_string_oidval(oi, out, VAL_COOKIE, 1, c->cookie_out);
 688     }
 689     if (c->client_IP)
 690     {
 691         Z_OtherInformation **oi;
 692         yaz_oi_APDU(a, &oi);
 693         yaz_oi_set_string_oidval(oi, out, VAL_CLIENT_IP, 1, c->client_IP);
 694     }
 695     otherInfo_attach (c, a, out);
 696     if (!z_APDU(out, &a, 0, 0))
 697     {
 698         FILE *outf = fopen("/tmp/apdu.txt", "a");
 699         if (a && outf)
 700         {
 701             ODR odr_pr = odr_createmem(ODR_PRINT);
 702             fprintf (outf, "a=%p\n", a);
 703             odr_setprint(odr_pr, outf);
 704             z_APDU(odr_pr, &a, 0, 0);
 705             odr_destroy(odr_pr);
 706         }
 707         yaz_log (LOG_DEBUG, "encoding failed");
 708         c->error = ZOOM_ERROR_ENCODE;
 709         odr_reset(out);
 710         return -1;
 711     }
 712
 713     return 0;
 714 }
 715
 716 static zoom_ret send_APDU (ZOOM_connection c, Z_APDU *a)
 717 {
 718     ZOOM_Event event;
 719     assert (a);
 720     if (encode_APDU(c, a, c->odr_out))
 721         return zoom_complete;
 722     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
 723     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
 724     ZOOM_connection_put_event (c, event);
 725     odr_reset(c->odr_out);
 726     return do_write (c);
 727 }
 728
 729 /* returns 1 if PDU was sent OK (still pending )
 730            0 if PDU was not sent OK (nothing to wait for)
 731 */
 732
 733 static zoom_ret ZOOM_connection_send_init (ZOOM_connection c)
 734 {
 735     const char *impname;
 736     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_initRequest);
 737     Z_InitRequest *ireq = apdu->u.initRequest;
 738     Z_IdAuthentication *auth = (Z_IdAuthentication *)
 739         odr_malloc(c->odr_out, sizeof(*auth));
 740     const char *auth_groupId = ZOOM_options_get (c->options, "group");
 741     const char *auth_userId = ZOOM_options_get (c->options, "user");
 742     const char *auth_password = ZOOM_options_get (c->options, "pass");
 743
 744     ODR_MASK_SET(ireq->options, Z_Options_search);
 745     ODR_MASK_SET(ireq->options, Z_Options_present);
 746     ODR_MASK_SET(ireq->options, Z_Options_scan);
 747     ODR_MASK_SET(ireq->options, Z_Options_sort);
 748     ODR_MASK_SET(ireq->options, Z_Options_extendedServices);
 749     ODR_MASK_SET(ireq->options, Z_Options_namedResultSets);
 750
 751     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_1);
 752     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_2);
 753     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_3);
 754
 755     impname = ZOOM_options_get (c->options, "implementationName");
 756     ireq->implementationName =
 757         (char *) odr_malloc (c->odr_out, 15 + (impname ? strlen(impname) : 0));
 758     strcpy (ireq->implementationName, "");
 759     if (impname)
 760     {
 761         strcat (ireq->implementationName, impname);
 762         strcat (ireq->implementationName, "/");
 763     }
 764     strcat (ireq->implementationName, "ZOOM-C/YAZ");
 765
 766     *ireq->maximumRecordSize =
 767         ZOOM_options_get_int (c->options, "maximumRecordSize", 1024*1024);
 768     *ireq->preferredMessageSize =
 769         ZOOM_options_get_int (c->options, "preferredMessageSize", 1024*1024);
 770
 771     if (auth_groupId || auth_password)
 772     {
 773         Z_IdPass *pass = (Z_IdPass *) odr_malloc(c->odr_out, sizeof(*pass));
 774         int i = 0;
 775         pass->groupId = 0;
 776         if (auth_groupId && *auth_groupId)
 777         {
 778             pass->groupId = (char *)
 779                 odr_malloc(c->odr_out, strlen(auth_groupId)+1);
 780             strcpy(pass->groupId, auth_groupId);
 781             i++;
 782         }
 783         pass->userId = 0;
 784         if (auth_userId && *auth_userId)
 785         {
 786             pass->userId = (char *)
 787                 odr_malloc(c->odr_out, strlen(auth_userId)+1);
 788             strcpy(pass->userId, auth_userId);
 789             i++;
 790         }
 791         pass->password = 0;
 792         if (auth_password && *auth_password)
 793         {
 794             pass->password = (char *)
 795                 odr_malloc(c->odr_out, strlen(auth_password)+1);
 796             strcpy(pass->password, auth_password);
 797             i++;
 798         }
 799         if (i)
 800         {
 801             auth->which = Z_IdAuthentication_idPass;
 802             auth->u.idPass = pass;
 803             ireq->idAuthentication = auth;
 804         }
 805     }
 806     else if (auth_userId)
 807     {
 808         auth->which = Z_IdAuthentication_open;
 809         auth->u.open = (char *)
 810             odr_malloc(c->odr_out, strlen(auth_userId)+1);
 811         strcpy(auth->u.open, auth_userId);
 812         ireq->idAuthentication = auth;
 813     }
 814     if (c->proxy)
 815         yaz_oi_set_string_oidval(&ireq->otherInfo, c->odr_out,
 816                                  VAL_PROXY, 1, c->host_port);
 817     if (c->charset||c->lang)
 818     {
 819         Z_OtherInformation **oi;
 820         Z_OtherInformationUnit *oi_unit;
 821
 822         yaz_oi_APDU(apdu, &oi);
 823
 824         if ((oi_unit = yaz_oi_update(oi, c->odr_out, NULL, 0, 0)))
 825         {
 826             ODR_MASK_SET(ireq->options, Z_Options_negotiationModel);
 827
 828             oi_unit->which = Z_OtherInfo_externallyDefinedInfo;
 829             oi_unit->information.externallyDefinedInfo =
 830                 yaz_set_proposal_charneg
 831                 (c->odr_out,
 832                  (const char **)&c->charset, (c->charset) ? 1:0,
 833                  (const char **)&c->lang, (c->lang) ? 1:0, 1);
 834         }
 835     }
 836     assert (apdu);
 837     return send_APDU (c, apdu);
 838 }
 839
 840 static zoom_ret ZOOM_connection_send_search (ZOOM_connection c)
 841 {
 842     ZOOM_resultset r;
 843     int lslb, ssub, mspn;
 844     const char *syntax;
 845     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_searchRequest);
 846     Z_SearchRequest *search_req = apdu->u.searchRequest;
 847     const char *elementSetName;
 848     const char *smallSetElementSetName;
 849     const char *mediumSetElementSetName;
 850     const char *schema;
 851
 852     assert (c->tasks);
 853     assert (c->tasks->which == ZOOM_TASK_SEARCH);
 854
 855     r = c->tasks->u.search.resultset;
 856
 857     elementSetName =
 858         ZOOM_options_get (r->options, "elementSetName");
 859     smallSetElementSetName  =
 860         ZOOM_options_get (r->options, "smallSetElementSetName");
 861     mediumSetElementSetName =
 862         ZOOM_options_get (r->options, "mediumSetElementSetName");
 863     schema =
 864         ZOOM_options_get (r->options, "schema");
 865
 866     if (!smallSetElementSetName)
 867         smallSetElementSetName = elementSetName;
 868
 869     if (!mediumSetElementSetName)
 870         mediumSetElementSetName = elementSetName;
 871
 872     assert (r);
 873     assert (r->r_query);
 874
 875     /* prepare query for the search request */
 876     search_req->query = r->r_query;
 877
 878     search_req->databaseNames =
 879         set_DatabaseNames (c, r->options, &search_req->num_databaseNames);
 880
 881     /* get syntax (no need to provide unless piggyback is in effect) */
 882     syntax = ZOOM_options_get (r->options, "preferredRecordSyntax");
 883
 884     lslb = ZOOM_options_get_int (r->options, "largeSetLowerBound", -1);
 885     ssub = ZOOM_options_get_int (r->options, "smallSetUpperBound", -1);
 886     mspn = ZOOM_options_get_int (r->options, "mediumSetPresentNumber", -1);
 887     if (lslb != -1 && ssub != -1 && mspn != -1)
 888     {
 889         /* So're a Z39.50 expert? Let's hope you don't do sort */
 890         *search_req->largeSetLowerBound = lslb;
 891         *search_req->smallSetUpperBound = ssub;
 892         *search_req->mediumSetPresentNumber = mspn;
 893     }
 894     else if (r->start == 0 && r->count > 0
 895              && r->piggyback && !r->r_sort_spec && !schema)
 896     {
 897         /* Regular piggyback - do it unless we're going to do sort */
 898         *search_req->largeSetLowerBound = 2000000000;
 899         *search_req->smallSetUpperBound = r->count;
 900         *search_req->mediumSetPresentNumber = r->count;
 901         smallSetElementSetName = 0;  /* no need to provide this */
 902     }
 903     else
 904     {
 905         /* non-piggyback. Need not provide elementsets or syntaxes .. */
 906         smallSetElementSetName = 0;
 907         mediumSetElementSetName = 0;
 908         syntax = 0;
 909     }
 910     if (smallSetElementSetName && *smallSetElementSetName)
 911     {
 912         Z_ElementSetNames *esn = (Z_ElementSetNames *)
 913             odr_malloc (c->odr_out, sizeof(*esn));
 914
 915         esn->which = Z_ElementSetNames_generic;
 916         esn->u.generic = odr_strdup (c->odr_out, smallSetElementSetName);
 917         search_req->smallSetElementSetNames = esn;
 918     }
 919     if (mediumSetElementSetName && *mediumSetElementSetName)
 920     {
 921         Z_ElementSetNames *esn = (Z_ElementSetNames *)
 922             odr_malloc (c->odr_out, sizeof(*esn));
 923
 924         esn->which = Z_ElementSetNames_generic;
 925         esn->u.generic = odr_strdup (c->odr_out, mediumSetElementSetName);
 926         search_req->mediumSetElementSetNames = esn;
 927     }
 928     if (syntax)
 929         search_req->preferredRecordSyntax =
 930             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
 931
 932     if (!r->setname)
 933     {
 934         if (c->support_named_resultsets)
 935         {
 936             char setname[14];
 937             int ord;
 938             /* find the lowest unused ordinal so that we re-use
 939                result sets on the server. */
 940             for (ord = 1; ; ord++)
 941             {
 942                 ZOOM_resultset rp;
 943                 sprintf (setname, "%d", ord);
 944                 for (rp = c->resultsets; rp; rp = rp->next)
 945                     if (rp->setname && !strcmp (rp->setname, setname))
 946                         break;
 947                 if (!rp)
 948                     break;
 949             }
 950             r->setname = xstrdup (setname);
 951             yaz_log (LOG_DEBUG, "allocating set %s", r->setname);
 952         }
 953         else
 954             r->setname = xstrdup ("default");
 955         ZOOM_options_set (r->options, "setname", r->setname);
 956     }
 957     search_req->resultSetName = odr_strdup(c->odr_out, r->setname);
 958     /* send search request */
 959     return send_APDU (c, apdu);
 960 }
 961
 962 static void response_diag (ZOOM_connection c, Z_DiagRec *p)
 963 {
 964     Z_DefaultDiagFormat *r;
 965     char *addinfo = 0;
 966
 967     xfree (c->addinfo);
 968     c->addinfo = 0;
 969     if (p->which != Z_DiagRec_defaultFormat)
 970     {
 971         c->error = ZOOM_ERROR_DECODE;
 972         return;
 973     }
 974     r = p->u.defaultFormat;
 975     switch (r->which)
 976     {
 977     case Z_DefaultDiagFormat_v2Addinfo:
 978         addinfo = r->u.v2Addinfo;
 979         break;
 980     case Z_DefaultDiagFormat_v3Addinfo:
 981         addinfo = r->u.v3Addinfo;
 982         break;
 983     }
 984     if (addinfo)
 985         c->addinfo = xstrdup (addinfo);
 986     c->error = *r->condition;
 987 }
 988
 989 ZOOM_API(ZOOM_record)
 990 ZOOM_record_clone (ZOOM_record srec)
 991 {
 992     char *buf;
 993     int size;
 994     ODR odr_enc;
 995     ZOOM_record nrec;
 996
 997     odr_enc = odr_createmem(ODR_ENCODE);
 998     if (!z_NamePlusRecord (odr_enc, &srec->npr, 0, 0))
 999         return 0;
1000     buf = odr_getbuf (odr_enc, &size, 0);
1001
1002     nrec = (ZOOM_record) xmalloc (sizeof(*nrec));
1003     nrec->odr = odr_createmem(ODR_DECODE);
1004     nrec->wrbuf_marc = 0;
1005     odr_setbuf (nrec->odr, buf, size, 0);
1006     z_NamePlusRecord (nrec->odr, &nrec->npr, 0, 0);
1007
1008     odr_destroy (odr_enc);
1009     return nrec;
1010 }
1011
1012 ZOOM_API(ZOOM_record)
1013 ZOOM_resultset_record_immediate (ZOOM_resultset s,size_t pos)
1014 {
1015     return record_cache_lookup (s, pos);
1016 }
1017
1018 ZOOM_API(ZOOM_record)
1019 ZOOM_resultset_record (ZOOM_resultset r, size_t pos)
1020 {
1021     ZOOM_resultset_retrieve (r, 1, pos, 1);
1022     return ZOOM_resultset_record_immediate (r, pos);
1023 }
1024
1025 ZOOM_API(void)
1026 ZOOM_record_destroy (ZOOM_record rec)
1027 {
1028     if (!rec)
1029         return;
1030     if (rec->wrbuf_marc)
1031         wrbuf_free (rec->wrbuf_marc, 1);
1032     odr_destroy (rec->odr);
1033     xfree (rec);
1034 }
1035
1036 ZOOM_API(const char *)
1037 ZOOM_record_get (ZOOM_record rec, const char *type, int *len)
1038 {
1039     Z_NamePlusRecord *npr;
1040
1041     if (len)
1042         *len = 0; /* default return */
1043
1044     if (!rec)
1045         return 0;
1046     npr = rec->npr;
1047     if (!npr)
1048         return 0;
1049     if (!strcmp (type, "database"))
1050     {
1051         if (len)
1052             *len = (npr->databaseName ? strlen(npr->databaseName) : 0);
1053         return npr->databaseName;
1054     }
1055     else if (!strcmp (type, "syntax"))
1056     {
1057         if (npr->which == Z_NamePlusRecord_databaseRecord)
1058         {
1059             Z_External *r = (Z_External *) npr->u.databaseRecord;
1060             oident *ent = oid_getentbyoid(r->direct_reference);
1061             if (ent)
1062             {
1063                 if (len)
1064                     *len = strlen(ent->desc);
1065                 return ent->desc;
1066             }
1067         }
1068         return "none";
1069     }
1070     else if (!strcmp (type, "render") &&
1071              npr->which == Z_NamePlusRecord_databaseRecord)
1072     {
1073         Z_External *r = (Z_External *) npr->u.databaseRecord;
1074         oident *ent = oid_getentbyoid(r->direct_reference);
1075
1076         if (r->which == Z_External_sutrs)
1077         {
1078             if (len) *len = r->u.sutrs->len;
1079             return (const char *) r->u.sutrs->buf;
1080         }
1081         else if (r->which == Z_External_octet)
1082         {
1083             switch (ent->value)
1084             {
1085             case VAL_SOIF:
1086             case VAL_HTML:
1087             case VAL_SUTRS:
1088                 break;
1089             case VAL_TEXT_XML:
1090             case VAL_APPLICATION_XML:
1091                 break;
1092             default:
1093                 if (!rec->wrbuf_marc)
1094                     rec->wrbuf_marc = wrbuf_alloc();
1095                 wrbuf_rewind (rec->wrbuf_marc);
1096                 if (yaz_marc_decode ((const char *)
1097                                      r->u.octet_aligned->buf,
1098                                      rec->wrbuf_marc, 0,
1099                                      r->u.octet_aligned->len,
1100                                      0) > 0)
1101                 {
1102                     if (len) *len = wrbuf_len(rec->wrbuf_marc);
1103                     return wrbuf_buf(rec->wrbuf_marc);
1104                 }
1105             }
1106             if (len) *len = r->u.octet_aligned->len;
1107             return (const char *) r->u.octet_aligned->buf;
1108         }
1109         else if (r->which == Z_External_grs1)
1110         {
1111             if (len) *len = 5;
1112             return "GRS-1";
1113         }
1114         return 0;
1115     }
1116     else if (!strcmp (type, "xml") &&
1117              npr->which == Z_NamePlusRecord_databaseRecord)
1118     {
1119         Z_External *r = (Z_External *) npr->u.databaseRecord;
1120         oident *ent = oid_getentbyoid(r->direct_reference);
1121
1122         if (r->which == Z_External_sutrs)
1123         {
1124             if (len) *len = r->u.sutrs->len;
1125             return (const char *) r->u.sutrs->buf;
1126         }
1127         else if (r->which == Z_External_octet)
1128         {
1129             switch (ent->value)
1130             {
1131             case VAL_SOIF:
1132             case VAL_HTML:
1133             case VAL_SUTRS:
1134                 break;
1135             case VAL_TEXT_XML:
1136             case VAL_APPLICATION_XML:
1137                 break;
1138             default:
1139                 if (!rec->wrbuf_marc)
1140                     rec->wrbuf_marc = wrbuf_alloc();
1141                 wrbuf_rewind (rec->wrbuf_marc);
1142                 if (yaz_marc_decode ((const char *)
1143                                      r->u.octet_aligned->buf,
1144                                      rec->wrbuf_marc, 0,
1145                                      r->u.octet_aligned->len,
1146                                      1) > 0)
1147                 {
1148                     if (len) *len = wrbuf_len(rec->wrbuf_marc);
1149                     return wrbuf_buf(rec->wrbuf_marc);
1150                 }
1151             }
1152             if (len) *len = r->u.octet_aligned->len;
1153             return (const char *) r->u.octet_aligned->buf;
1154         }
1155         else if (r->which == Z_External_grs1)
1156         {
1157             if (len) *len = 5;
1158             return "GRS-1";
1159         }
1160         return 0;
1161     }
1162     else if (!strcmp (type, "raw"))
1163     {
1164         if (npr->which == Z_NamePlusRecord_databaseRecord)
1165         {
1166             Z_External *r = (Z_External *) npr->u.databaseRecord;
1167
1168             if (r->which == Z_External_sutrs)
1169             {
1170                 if (len) *len = r->u.sutrs->len;
1171                 return (const char *) r->u.sutrs->buf;
1172             }
1173             else if (r->which == Z_External_octet)
1174             {
1175                 if (len) *len = r->u.octet_aligned->len;
1176                 return (const char *) r->u.octet_aligned->buf;
1177             }
1178             else /* grs-1, explain, ... */
1179             {
1180                 if (len) *len = -1;
1181                 return (const char *) npr->u.databaseRecord;
1182             }
1183         }
1184         return 0;
1185     }
1186     else if (!strcmp (type, "ext"))
1187     {
1188         if (npr->which == Z_NamePlusRecord_databaseRecord)
1189             return (const char *) npr->u.databaseRecord;
1190         return 0;
1191     }
1192     return 0;
1193 }
1194
1195 static void record_cache_add (ZOOM_resultset r, Z_NamePlusRecord *npr, int pos)
1196 {
1197     ZOOM_record_cache rc;
1198     const char *elementSetName =
1199         ZOOM_resultset_option_get (r, "elementSetName");
1200     const char *syntax =
1201         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
1202
1203
1204     for (rc = r->record_cache; rc; rc = rc->next)
1205     {
1206         if (pos == rc->pos)
1207         {
1208             if ((!elementSetName && !rc->elementSetName)
1209                 || (elementSetName && rc->elementSetName &&
1210                     !strcmp (elementSetName, rc->elementSetName)))
1211             {
1212                 if ((!syntax && !rc->syntax)
1213                     || (syntax && rc->syntax &&
1214                         !strcmp (syntax, rc->syntax)))
1215                 {
1216                     /* not destroying rc->npr (it's handled by nmem )*/
1217                     rc->rec.npr = npr;
1218                     /* keeping wrbuf_marc too */
1219                     return;
1220                 }
1221             }
1222         }
1223     }
1224     rc = (ZOOM_record_cache) odr_malloc (r->odr, sizeof(*rc));
1225     rc->rec.npr = npr;
1226     rc->rec.odr = 0;
1227     rc->rec.wrbuf_marc = 0;
1228     if (elementSetName)
1229         rc->elementSetName = odr_strdup (r->odr, elementSetName);
1230     else
1231         rc->elementSetName = 0;
1232
1233     if (syntax)
1234         rc->syntax = odr_strdup (r->odr, syntax);
1235     else
1236         rc->syntax = 0;
1237
1238     rc->pos = pos;
1239     rc->next = r->record_cache;
1240     r->record_cache = rc;
1241 }
1242
1243 static ZOOM_record record_cache_lookup (ZOOM_resultset r, int pos)
1244 {
1245     ZOOM_record_cache rc;
1246     const char *elementSetName =
1247         ZOOM_resultset_option_get (r, "elementSetName");
1248     const char *syntax =
1249         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
1250
1251     for (rc = r->record_cache; rc; rc = rc->next)
1252     {
1253         if (pos == rc->pos)
1254         {
1255             if ((!elementSetName && !rc->elementSetName)
1256                 || (elementSetName && rc->elementSetName &&
1257                     !strcmp (elementSetName, rc->elementSetName)))
1258             {
1259                 if ((!syntax && !rc->syntax)
1260                     || (syntax && rc->syntax &&
1261                         !strcmp (syntax, rc->syntax)))
1262                     return &rc->rec;
1263             }
1264         }
1265     }
1266     return 0;
1267 }
1268
1269 static void handle_records (ZOOM_connection c, Z_Records *sr,
1270                             int present_phase)
1271 {
1272     ZOOM_resultset resultset;
1273
1274     if (!c->tasks)
1275         return ;
1276     switch (c->tasks->which)
1277     {
1278     case ZOOM_TASK_SEARCH:
1279         resultset = c->tasks->u.search.resultset;
1280         break;
1281     case ZOOM_TASK_RETRIEVE:
1282         resultset = c->tasks->u.retrieve.resultset;
1283         break;
1284     default:
1285         return;
1286     }
1287     if (sr && sr->which == Z_Records_NSD)
1288     {
1289         Z_DiagRec dr, *dr_p = &dr;
1290         dr.which = Z_DiagRec_defaultFormat;
1291         dr.u.defaultFormat = sr->u.nonSurrogateDiagnostic;
1292
1293         response_diag (c, dr_p);
1294     }
1295     else if (sr && sr->which == Z_Records_multipleNSD)
1296     {
1297         if (sr->u.multipleNonSurDiagnostics->num_diagRecs >= 1)
1298             response_diag(c, sr->u.multipleNonSurDiagnostics->diagRecs[0]);
1299         else
1300             c->error = ZOOM_ERROR_DECODE;
1301     }
1302     else
1303     {
1304         if (resultset->count + resultset->start > resultset->size)
1305             resultset->count = resultset->size - resultset->start;
1306         if (resultset->count < 0)
1307             resultset->count = 0;
1308         if (sr && sr->which == Z_Records_DBOSD)
1309         {
1310             int i;
1311             NMEM nmem = odr_extract_mem (c->odr_in);
1312             Z_NamePlusRecordList *p =
1313                 sr->u.databaseOrSurDiagnostics;
1314             for (i = 0; i<p->num_records; i++)
1315             {
1316                 record_cache_add (resultset, p->records[i],
1317                                   i+ resultset->start);
1318             }
1319             /* transfer our response to search_nmem .. we need it later */
1320             nmem_transfer (resultset->odr->mem, nmem);
1321             nmem_destroy (nmem);
1322             if (present_phase && p->num_records == 0)
1323             {
1324                 /* present response and we didn't get any records! */
1325                 c->error = ZOOM_ERROR_DECODE;
1326             }
1327         }
1328         else if (present_phase)
1329         {
1330             /* present response and we didn't get any records! */
1331             c->error = ZOOM_ERROR_DECODE;
1332         }
1333     }
1334 }
1335
1336 static void handle_present_response (ZOOM_connection c, Z_PresentResponse *pr)
1337 {
1338     handle_records (c, pr->records, 1);
1339 }
1340
1341 static void handle_search_response (ZOOM_connection c, Z_SearchResponse *sr)
1342 {
1343     ZOOM_resultset resultset;
1344
1345     yaz_log (LOG_DEBUG, "got search response");
1346
1347     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
1348         return ;
1349
1350     resultset = c->tasks->u.search.resultset;
1351
1352     resultset->size = *sr->resultCount;
1353     handle_records (c, sr->records, 0);
1354 }
1355
1356 static void sort_response (ZOOM_connection c, Z_SortResponse *res)
1357 {
1358     if (res->diagnostics && res->num_diagnostics > 0)
1359         response_diag (c, res->diagnostics[0]);
1360 }
1361
1362 static int scan_response (ZOOM_connection c, Z_ScanResponse *res)
1363 {
1364     NMEM nmem = odr_extract_mem (c->odr_in);
1365     ZOOM_scanset scan;
1366
1367     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
1368         return 0;
1369     scan = c->tasks->u.scan.scan;
1370
1371     if (res->entries && res->entries->nonsurrogateDiagnostics)
1372         response_diag(c, res->entries->nonsurrogateDiagnostics[0]);
1373     scan->scan_response = res;
1374     nmem_transfer (scan->odr->mem, nmem);
1375     if (res->stepSize)
1376         ZOOM_options_set_int (scan->options, "stepSize", *res->stepSize);
1377     if (res->positionOfTerm)
1378         ZOOM_options_set_int (scan->options, "position", *res->positionOfTerm);
1379     if (res->scanStatus)
1380         ZOOM_options_set_int (scan->options, "scanStatus", *res->scanStatus);
1381     if (res->numberOfEntriesReturned)
1382         ZOOM_options_set_int (scan->options, "number",
1383                               *res->numberOfEntriesReturned);
1384     nmem_destroy (nmem);
1385     return 1;
1386 }
1387
1388 static zoom_ret send_sort (ZOOM_connection c)
1389 {
1390     ZOOM_resultset  resultset;
1391
1392     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
1393         return zoom_complete;
1394
1395     resultset = c->tasks->u.search.resultset;
1396
1397     if (c->error)
1398     {
1399         resultset->r_sort_spec = 0;
1400         return zoom_complete;
1401     }
1402     if (resultset->r_sort_spec)
1403     {
1404         Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_sortRequest);
1405         Z_SortRequest *req = apdu->u.sortRequest;
1406
1407         req->num_inputResultSetNames = 1;
1408         req->inputResultSetNames = (Z_InternationalString **)
1409             odr_malloc (c->odr_out, sizeof(*req->inputResultSetNames));
1410         req->inputResultSetNames[0] =
1411             odr_strdup (c->odr_out, resultset->setname);
1412         req->sortedResultSetName = odr_strdup (c->odr_out, resultset->setname);
1413         req->sortSequence = resultset->r_sort_spec;
1414         resultset->r_sort_spec = 0;
1415         return send_APDU (c, apdu);
1416     }
1417     return zoom_complete;
1418 }
1419
1420 static zoom_ret send_present (ZOOM_connection c)
1421 {
1422     Z_APDU *apdu = 0;
1423     Z_PresentRequest *req = 0;
1424     int i = 0;
1425     const char *syntax = 0;
1426     const char *elementSetName = 0;
1427     const char *schema = 0;
1428     ZOOM_resultset  resultset;
1429
1430     if (!c->tasks)
1431         return zoom_complete;
1432
1433     switch (c->tasks->which)
1434     {
1435     case ZOOM_TASK_SEARCH:
1436         resultset = c->tasks->u.search.resultset;
1437         break;
1438     case ZOOM_TASK_RETRIEVE:
1439         resultset = c->tasks->u.retrieve.resultset;
1440         resultset->start = c->tasks->u.retrieve.start;
1441         resultset->count = c->tasks->u.retrieve.count;
1442
1443         if (resultset->start >= resultset->size)
1444             return zoom_complete;
1445         if (resultset->start + resultset->count > resultset->size)
1446             resultset->count = resultset->size - resultset->start;
1447         break;
1448     default:
1449         return zoom_complete;
1450     }
1451
1452     syntax = ZOOM_resultset_option_get (resultset, "preferredRecordSyntax");
1453     elementSetName = ZOOM_resultset_option_get (resultset, "elementSetName");
1454     schema = ZOOM_resultset_option_get (resultset, "schema");
1455
1456     if (c->error)                  /* don't continue on error */
1457         return zoom_complete;
1458     if (resultset->start < 0)
1459         return zoom_complete;
1460     for (i = 0; i<resultset->count; i++)
1461     {
1462         ZOOM_record rec =
1463             record_cache_lookup (resultset, i + resultset->start);
1464         if (!rec)
1465             break;
1466     }
1467     if (i == resultset->count)
1468         return zoom_complete;
1469
1470     apdu = zget_APDU(c->odr_out, Z_APDU_presentRequest);
1471     req = apdu->u.presentRequest;
1472
1473     resultset->start += i;
1474     resultset->count -= i;
1475     *req->resultSetStartPoint = resultset->start + 1;
1476     *req->numberOfRecordsRequested = resultset->count;
1477     assert (*req->numberOfRecordsRequested > 0);
1478
1479     if (syntax && *syntax)
1480         req->preferredRecordSyntax =
1481             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
1482
1483     if (schema && *schema)
1484     {
1485         Z_RecordComposition *compo = (Z_RecordComposition *)
1486             odr_malloc (c->odr_out, sizeof(*compo));
1487
1488         req->recordComposition = compo;
1489         compo->which = Z_RecordComp_complex;
1490         compo->u.complex = (Z_CompSpec *)
1491             odr_malloc(c->odr_out, sizeof(*compo->u.complex));
1492         compo->u.complex->selectAlternativeSyntax = (bool_t *)
1493             odr_malloc(c->odr_out, sizeof(bool_t));
1494         *compo->u.complex->selectAlternativeSyntax = 0;
1495
1496         compo->u.complex->generic = (Z_Specification *)
1497             odr_malloc(c->odr_out, sizeof(*compo->u.complex->generic));
1498
1499         compo->u.complex->generic->schema = (Odr_oid *)
1500             yaz_str_to_z3950oid (c->odr_out, CLASS_SCHEMA, schema);
1501
1502         if (!compo->u.complex->generic->schema)
1503         {
1504             /* OID wasn't a schema! Try record syntax instead. */
1505
1506             compo->u.complex->generic->schema = (Odr_oid *)
1507                 yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, schema);
1508         }
1509         if (elementSetName && *elementSetName)
1510         {
1511             compo->u.complex->generic->elementSpec = (Z_ElementSpec *)
1512                 odr_malloc(c->odr_out, sizeof(Z_ElementSpec));
1513             compo->u.complex->generic->elementSpec->which =
1514                 Z_ElementSpec_elementSetName;
1515             compo->u.complex->generic->elementSpec->u.elementSetName =
1516                 odr_strdup (c->odr_out, elementSetName);
1517         }
1518         else
1519             compo->u.complex->generic->elementSpec = 0;
1520         compo->u.complex->num_dbSpecific = 0;
1521         compo->u.complex->dbSpecific = 0;
1522         compo->u.complex->num_recordSyntax = 0;
1523         compo->u.complex->recordSyntax = 0;
1524     }
1525     else if (elementSetName && *elementSetName)
1526     {
1527         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1528             odr_malloc (c->odr_out, sizeof(*esn));
1529         Z_RecordComposition *compo = (Z_RecordComposition *)
1530             odr_malloc (c->odr_out, sizeof(*compo));
1531
1532         esn->which = Z_ElementSetNames_generic;
1533         esn->u.generic = odr_strdup (c->odr_out, elementSetName);
1534         compo->which = Z_RecordComp_simple;
1535         compo->u.simple = esn;
1536         req->recordComposition = compo;
1537     }
1538     req->resultSetId = odr_strdup(c->odr_out, resultset->setname);
1539     return send_APDU (c, apdu);
1540 }
1541
1542 ZOOM_API(ZOOM_scanset)
1543 ZOOM_connection_scan (ZOOM_connection c, const char *start)
1544 {
1545     ZOOM_scanset scan = (ZOOM_scanset) xmalloc (sizeof(*scan));
1546
1547     scan->connection = c;
1548     scan->odr = odr_createmem (ODR_DECODE);
1549     scan->options = ZOOM_options_create_with_parent (c->options);
1550     scan->refcount = 1;
1551     scan->scan_response = 0;
1552
1553     if ((scan->termListAndStartPoint =
1554          p_query_scan(scan->odr, PROTO_Z3950, &scan->attributeSet,
1555                       start)))
1556     {
1557         ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_SCAN);
1558         task->u.scan.scan = scan;
1559
1560         (scan->refcount)++;
1561         if (!c->async)
1562         {
1563             while (ZOOM_event (1, &c))
1564                 ;
1565         }
1566     }
1567     return scan;
1568 }
1569
1570 ZOOM_API(void)
1571 ZOOM_scanset_destroy (ZOOM_scanset scan)
1572 {
1573     if (!scan)
1574         return;
1575     (scan->refcount)--;
1576     if (scan->refcount == 0)
1577     {
1578         odr_destroy (scan->odr);
1579
1580         ZOOM_options_destroy (scan->options);
1581         xfree (scan);
1582     }
1583 }
1584
1585 static zoom_ret send_package (ZOOM_connection c)
1586 {
1587     ZOOM_Event event;
1588     if (!c->tasks)
1589         return zoom_complete;
1590     assert (c->tasks->which == ZOOM_TASK_PACKAGE);
1591
1592     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
1593     ZOOM_connection_put_event (c, event);
1594
1595     return do_write_ex (c, c->tasks->u.package->buf_out,
1596                         c->tasks->u.package->len_out);
1597 }
1598
1599 static zoom_ret send_scan (ZOOM_connection c)
1600 {
1601     ZOOM_scanset scan;
1602     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_scanRequest);
1603     Z_ScanRequest *req = apdu->u.scanRequest;
1604     if (!c->tasks)
1605         return zoom_complete;
1606     assert (c->tasks->which == ZOOM_TASK_SCAN);
1607     scan = c->tasks->u.scan.scan;
1608
1609     req->termListAndStartPoint = scan->termListAndStartPoint;
1610     req->attributeSet = scan->attributeSet;
1611
1612     *req->numberOfTermsRequested =
1613         ZOOM_options_get_int(scan->options, "number", 10);
1614
1615     req->preferredPositionInResponse =
1616         odr_intdup (c->odr_out,
1617                     ZOOM_options_get_int(scan->options, "position", 1));
1618
1619     req->stepSize =
1620         odr_intdup (c->odr_out,
1621                     ZOOM_options_get_int(scan->options, "stepSize", 0));
1622
1623     req->databaseNames = set_DatabaseNames (c, scan->options,
1624                                             &req->num_databaseNames);
1625
1626     return send_APDU (c, apdu);
1627 }
1628
1629 ZOOM_API(size_t)
1630 ZOOM_scanset_size (ZOOM_scanset scan)
1631 {
1632     if (!scan || !scan->scan_response || !scan->scan_response->entries)
1633         return 0;
1634     return scan->scan_response->entries->num_entries;
1635 }
1636
1637 ZOOM_API(const char *)
1638 ZOOM_scanset_term (ZOOM_scanset scan, size_t pos,
1639                                int *occ, int *len)
1640 {
1641     const char *term = 0;
1642     size_t noent = ZOOM_scanset_size (scan);
1643     Z_ScanResponse *res = scan->scan_response;
1644
1645     *len = 0;
1646     *occ = 0;
1647     if (pos >= noent)
1648         return 0;
1649     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
1650     {
1651         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
1652
1653         if (t->term->which == Z_Term_general)
1654         {
1655             term = (const char *) t->term->u.general->buf;
1656             *len = t->term->u.general->len;
1657         }
1658         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
1659     }
1660     return term;
1661 }
1662
1663 ZOOM_API(const char *)
1664 ZOOM_scanset_option_get (ZOOM_scanset scan, const char *key)
1665 {
1666     return ZOOM_options_get (scan->options, key);
1667 }
1668
1669 ZOOM_API(void)
1670 ZOOM_scanset_option_set (ZOOM_scanset scan, const char *key,
1671                               const char *val)
1672 {
1673     ZOOM_options_set (scan->options, key, val);
1674 }
1675
1676 static Z_APDU *create_es_package (ZOOM_package p, int type)
1677 {
1678     const char *str;
1679     Z_APDU *apdu = zget_APDU(p->odr_out, Z_APDU_extendedServicesRequest);
1680     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
1681
1682     *req->function = Z_ExtendedServicesRequest_create;
1683
1684     str = ZOOM_options_get(p->options, "package-name");
1685     if (str && *str)
1686         req->packageName = nmem_strdup (p->odr_out->mem, str);
1687
1688     str = ZOOM_options_get(p->options, "user-id");
1689     if (str)
1690         req->userId = nmem_strdup (p->odr_out->mem, str);
1691
1692     req->packageType = yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
1693                                               type);
1694
1695     str = ZOOM_options_get(p->options, "function");
1696     if (str)
1697     {
1698         if (!strcmp (str, "create"))
1699             *req->function = 1;
1700         if (!strcmp (str, "delete"))
1701             *req->function = 2;
1702         if (!strcmp (str, "modify"))
1703             *req->function = 3;
1704     }
1705     return apdu;
1706 }
1707
1708 static const char *ill_array_lookup (void *clientData, const char *idx)
1709 {
1710     ZOOM_package p = (ZOOM_package) clientData;
1711     return ZOOM_options_get (p->options, idx+4);
1712 }
1713
1714 static Z_External *encode_ill_request (ZOOM_package p)
1715 {
1716     ODR out = p->odr_out;
1717     ILL_Request *req;
1718     Z_External *r = 0;
1719     struct ill_get_ctl ctl;
1720
1721     ctl.odr = p->odr_out;
1722     ctl.clientData = p;
1723     ctl.f = ill_array_lookup;
1724
1725     req = ill_get_ILLRequest(&ctl, "ill", 0);
1726
1727     if (!ill_Request (out, &req, 0, 0))
1728     {
1729         int ill_request_size;
1730         char *ill_request_buf = odr_getbuf (out, &ill_request_size, 0);
1731         if (ill_request_buf)
1732             odr_setbuf (out, ill_request_buf, ill_request_size, 1);
1733         return 0;
1734     }
1735     else
1736     {
1737         oident oid;
1738         int illRequest_size = 0;
1739         char *illRequest_buf = odr_getbuf (out, &illRequest_size, 0);
1740
1741         oid.proto = PROTO_GENERAL;
1742         oid.oclass = CLASS_GENERAL;
1743         oid.value = VAL_ISO_ILL_1;
1744
1745         r = (Z_External *) odr_malloc (out, sizeof(*r));
1746         r->direct_reference = odr_oiddup(out,oid_getoidbyent(&oid));
1747         r->indirect_reference = 0;
1748         r->descriptor = 0;
1749         r->which = Z_External_single;
1750
1751         r->u.single_ASN1_type = (Odr_oct *)
1752             odr_malloc (out, sizeof(*r->u.single_ASN1_type));
1753         r->u.single_ASN1_type->buf = (unsigned char*)
1754             odr_malloc (out, illRequest_size);
1755         r->u.single_ASN1_type->len = illRequest_size;
1756         r->u.single_ASN1_type->size = illRequest_size;
1757         memcpy (r->u.single_ASN1_type->buf, illRequest_buf, illRequest_size);
1758     }
1759     return r;
1760 }
1761
1762 static Z_ItemOrder *encode_item_order(ZOOM_package p)
1763 {
1764     Z_ItemOrder *req = (Z_ItemOrder *) odr_malloc (p->odr_out, sizeof(*req));
1765     const char *str;
1766
1767     req->which=Z_IOItemOrder_esRequest;
1768     req->u.esRequest = (Z_IORequest *)
1769         odr_malloc(p->odr_out,sizeof(Z_IORequest));
1770
1771     /* to keep part ... */
1772     req->u.esRequest->toKeep = (Z_IOOriginPartToKeep *)
1773         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartToKeep));
1774     req->u.esRequest->toKeep->supplDescription = 0;
1775     req->u.esRequest->toKeep->contact = (Z_IOContact *)
1776         odr_malloc (p->odr_out, sizeof(*req->u.esRequest->toKeep->contact));
1777
1778     str = ZOOM_options_get(p->options, "contact-name");
1779     req->u.esRequest->toKeep->contact->name = str ?
1780         nmem_strdup (p->odr_out->mem, str) : 0;
1781
1782     str = ZOOM_options_get(p->options, "contact-phone");
1783     req->u.esRequest->toKeep->contact->phone = str ?
1784         nmem_strdup (p->odr_out->mem, str) : 0;
1785
1786     str = ZOOM_options_get(p->options, "contact-email");
1787     req->u.esRequest->toKeep->contact->email = str ?
1788         nmem_strdup (p->odr_out->mem, str) : 0;
1789
1790     req->u.esRequest->toKeep->addlBilling = 0;
1791
1792     /* not to keep part ... */
1793     req->u.esRequest->notToKeep = (Z_IOOriginPartNotToKeep *)
1794         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartNotToKeep));
1795
1796     req->u.esRequest->notToKeep->resultSetItem = (Z_IOResultSetItem *)
1797         odr_malloc(p->odr_out, sizeof(Z_IOResultSetItem));
1798
1799     str = ZOOM_options_get(p->options, "itemorder-setname");
1800     if (!str)
1801         str = "default";
1802     req->u.esRequest->notToKeep->resultSetItem->resultSetId =
1803         nmem_strdup (p->odr_out->mem, str);
1804     req->u.esRequest->notToKeep->resultSetItem->item =
1805         (int *) odr_malloc(p->odr_out, sizeof(int));
1806
1807     str = ZOOM_options_get(p->options, "itemorder-item");
1808     *req->u.esRequest->notToKeep->resultSetItem->item =
1809         (str ? atoi(str) : 1);
1810
1811     req->u.esRequest->notToKeep->itemRequest = encode_ill_request(p);
1812
1813     return req;
1814 }
1815
1816 ZOOM_API(void)
1817     ZOOM_package_send (ZOOM_package p, const char *type)
1818 {
1819     Z_APDU *apdu = 0;
1820     ZOOM_connection c;
1821     if (!p)
1822         return;
1823     c = p->connection;
1824     odr_reset (p->odr_out);
1825     xfree (p->buf_out);
1826     p->buf_out = 0;
1827     if (!strcmp(type, "itemorder"))
1828     {
1829         Z_External *r;
1830         apdu = create_es_package (p, VAL_ITEMORDER);
1831         if (apdu)
1832         {
1833             r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
1834
1835             r->direct_reference =
1836                 yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
1837                                        VAL_ITEMORDER);
1838             r->descriptor = 0;
1839             r->which = Z_External_itemOrder;
1840             r->indirect_reference = 0;
1841             r->u.itemOrder = encode_item_order (p);
1842
1843             apdu->u.extendedServicesRequest->taskSpecificParameters = r;
1844         }
1845     }
1846     if (apdu)
1847     {
1848         if (encode_APDU(p->connection, apdu, p->odr_out) == 0)
1849         {
1850             char *buf;
1851
1852             ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_PACKAGE);
1853             task->u.package = p;
1854             buf = odr_getbuf(p->odr_out, &p->len_out, 0);
1855             p->buf_out = (char *) xmalloc (p->len_out);
1856             memcpy (p->buf_out, buf, p->len_out);
1857
1858             (p->refcount)++;
1859             if (!c->async)
1860             {
1861                 while (ZOOM_event (1, &c))
1862                     ;
1863             }
1864         }
1865     }
1866 }
1867
1868 ZOOM_API(ZOOM_package)
1869     ZOOM_connection_package (ZOOM_connection c, ZOOM_options options)
1870 {
1871     ZOOM_package p = (ZOOM_package) xmalloc (sizeof(*p));
1872
1873     p->connection = c;
1874     p->odr_out = odr_createmem (ODR_ENCODE);
1875     p->options = ZOOM_options_create_with_parent2 (options, c->options);
1876     p->refcount = 1;
1877     p->buf_out = 0;
1878     p->len_out = 0;
1879     return p;
1880 }
1881
1882 ZOOM_API(void)
1883     ZOOM_package_destroy(ZOOM_package p)
1884 {
1885     if (!p)
1886         return;
1887     (p->refcount)--;
1888     if (p->refcount == 0)
1889     {
1890         odr_destroy (p->odr_out);
1891         xfree (p->buf_out);
1892
1893         ZOOM_options_destroy (p->options);
1894         xfree (p);
1895     }
1896 }
1897
1898 ZOOM_API(const char *)
1899 ZOOM_package_option_get (ZOOM_package p, const char *key)
1900 {
1901     return ZOOM_options_get (p->options, key);
1902 }
1903
1904 ZOOM_API(void)
1905 ZOOM_package_option_set (ZOOM_package p, const char *key,
1906                               const char *val)
1907 {
1908     ZOOM_options_set (p->options, key, val);
1909 }
1910
1911 static int ZOOM_connection_exec_task (ZOOM_connection c)
1912 {
1913     ZOOM_task task = c->tasks;
1914     zoom_ret ret = zoom_complete;
1915
1916     if (!task)
1917     {
1918         yaz_log (LOG_DEBUG, "ZOOM_connection_exec_task task=<null>");
1919         return 0;
1920     }
1921     yaz_log (LOG_DEBUG, "ZOOM_connection_exec_task type=%d run=%d",
1922              task->which, task->running);
1923     if (c->error != ZOOM_ERROR_NONE ||
1924         (!c->cs && task->which != ZOOM_TASK_CONNECT))
1925     {
1926         yaz_log (LOG_DEBUG, "remove tasks because of error = %d", c->error);
1927         ZOOM_connection_remove_tasks (c);
1928         return 0;
1929     }
1930     if (task->running)
1931     {
1932         yaz_log (LOG_DEBUG, "task already running");
1933         return 0;
1934     }
1935     task->running = 1;
1936     switch (task->which)
1937     {
1938     case ZOOM_TASK_SEARCH:
1939         ret = ZOOM_connection_send_search (c);
1940         break;
1941     case ZOOM_TASK_RETRIEVE:
1942         ret = send_present (c);
1943         break;
1944     case ZOOM_TASK_CONNECT:
1945         ret = do_connect(c);
1946         break;
1947     case ZOOM_TASK_SCAN:
1948         ret = send_scan(c);
1949         break;
1950     case ZOOM_TASK_PACKAGE:
1951         ret = send_package(c);
1952         break;
1953     }
1954     if (ret == zoom_complete)
1955     {
1956         yaz_log (LOG_DEBUG, "task removed (complete)");
1957         ZOOM_connection_remove_task (c);
1958         return 0;
1959     }
1960     yaz_log (LOG_DEBUG, "task pending");
1961     return 1;
1962 }
1963
1964 static zoom_ret send_sort_present (ZOOM_connection c)
1965 {
1966     zoom_ret r = send_sort (c);
1967     if (r == zoom_complete)
1968         r = send_present (c);
1969     return r;
1970 }
1971
1972 static int es_response (ZOOM_connection c,
1973                         Z_ExtendedServicesResponse *res)
1974 {
1975     if (!c->tasks || c->tasks->which != ZOOM_TASK_PACKAGE)
1976         return 0;
1977     if (res->diagnostics && res->num_diagnostics > 0)
1978         response_diag(c, res->diagnostics[0]);
1979     if (res->taskPackage &&
1980         res->taskPackage->which == Z_External_extendedService)
1981     {
1982         Z_TaskPackage *taskPackage = res->taskPackage->u.extendedService;
1983         Odr_oct *id = taskPackage->targetReference;
1984
1985         if (id)
1986             ZOOM_options_setl (c->tasks->u.package->options,
1987                                "targetReference", (char*) id->buf, id->len);
1988     }
1989     return 1;
1990 }
1991
1992
1993 static void handle_apdu (ZOOM_connection c, Z_APDU *apdu)
1994 {
1995     Z_InitResponse *initrs;
1996
1997     c->mask = 0;
1998     yaz_log (LOG_DEBUG, "handle_apdu type=%d", apdu->which);
1999     switch(apdu->which)
2000     {
2001     case Z_APDU_initResponse:
2002         initrs = apdu->u.initResponse;
2003         if (!*initrs->result)
2004         {
2005             c->error = ZOOM_ERROR_INIT;
2006         }
2007         else
2008         {
2009             char *cookie =
2010                 yaz_oi_get_string_oidval (&apdu->u.initResponse->otherInfo,
2011                                           VAL_COOKIE, 1, 0);
2012             xfree (c->cookie_in);
2013             c->cookie_in = 0;
2014             if (cookie)
2015                 c->cookie_in = xstrdup(cookie);
2016             if (ODR_MASK_GET(initrs->options, Z_Options_namedResultSets) &&
2017                 ODR_MASK_GET(initrs->protocolVersion, Z_ProtocolVersion_3))
2018                 c->support_named_resultsets = 1;
2019             if (c->tasks)
2020             {
2021                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
2022                 ZOOM_connection_remove_task (c);
2023             }
2024             ZOOM_connection_exec_task (c);
2025         }
2026         if (ODR_MASK_GET(initrs->options, Z_Options_negotiationModel))
2027         {
2028             NMEM tmpmem = nmem_create();
2029             Z_CharSetandLanguageNegotiation *p =
2030                 yaz_get_charneg_record(initrs->otherInfo);
2031
2032             if (p)
2033             {
2034                 char *charset=NULL, *lang=NULL;
2035                 int sel;
2036
2037                 yaz_get_response_charneg(tmpmem, p, &charset, &lang, &sel);
2038                 yaz_log(LOG_DEBUG, "Target accepted: charset %s, "
2039                         "language %s, select %d",
2040                         charset ? charset : "none", lang ? lang : "none", sel);
2041                 if (charset)
2042                     ZOOM_connection_option_set (c, "negotiation-charset",
2043                                                 charset);
2044                 if (lang)
2045                     ZOOM_connection_option_set (c, "negotiation-lang",
2046                                                 lang);
2047                 nmem_destroy(tmpmem);
2048             }
2049         }
2050         break;
2051     case Z_APDU_searchResponse:
2052         handle_search_response (c, apdu->u.searchResponse);
2053         if (send_sort_present (c) == zoom_complete)
2054             ZOOM_connection_remove_task (c);
2055         break;
2056     case Z_APDU_presentResponse:
2057         handle_present_response (c, apdu->u.presentResponse);
2058         if (send_present (c) == zoom_complete)
2059             ZOOM_connection_remove_task (c);
2060         break;
2061     case Z_APDU_sortResponse:
2062         sort_response (c, apdu->u.sortResponse);
2063         if (send_present (c) == zoom_complete)
2064             ZOOM_connection_remove_task (c);
2065         break;
2066     case Z_APDU_scanResponse:
2067         scan_response (c, apdu->u.scanResponse);
2068         ZOOM_connection_remove_task (c);
2069         break;
2070     case Z_APDU_extendedServicesResponse:
2071         es_response (c, apdu->u.extendedServicesResponse);
2072         ZOOM_connection_remove_task (c);
2073         break;
2074     case Z_APDU_close:
2075         if (c->reconnect_ok)
2076         {
2077             do_close(c);
2078             c->tasks->running = 0;
2079             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
2080         }
2081         else
2082         {
2083             c->error = ZOOM_ERROR_CONNECTION_LOST;
2084             do_close(c);
2085         }
2086         break;
2087     default:
2088         c->error = ZOOM_ERROR_DECODE;
2089         do_close(c);
2090     }
2091 }
2092
2093 static int do_read (ZOOM_connection c)
2094 {
2095     int r;
2096     Z_APDU *apdu;
2097     ZOOM_Event event;
2098
2099     event = ZOOM_Event_create (ZOOM_EVENT_RECV_DATA);
2100     ZOOM_connection_put_event (c, event);
2101
2102     yaz_log (LOG_DEBUG, "do_read len=%d", c->len_in);
2103
2104     r = cs_get (c->cs, &c->buf_in, &c->len_in);
2105     if (r == 1)
2106         return 0;
2107     if (r <= 0)
2108     {
2109         if (c->reconnect_ok)
2110         {
2111             do_close (c);
2112             c->reconnect_ok = 0;
2113             yaz_log (LOG_DEBUG, "reconnect read");
2114             c->tasks->running = 0;
2115             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
2116         }
2117         else
2118         {
2119             c->error= ZOOM_ERROR_CONNECTION_LOST;
2120             do_close (c);
2121         }
2122     }
2123     else
2124     {
2125         ZOOM_Event event;
2126         odr_reset (c->odr_in);
2127         odr_setbuf (c->odr_in, c->buf_in, r, 0);
2128         event = ZOOM_Event_create (ZOOM_EVENT_RECV_APDU);
2129         ZOOM_connection_put_event (c, event);
2130         if (!z_APDU (c->odr_in, &apdu, 0, 0))
2131         {
2132             c->error = ZOOM_ERROR_DECODE;
2133             do_close (c);
2134         }
2135         else
2136             handle_apdu (c, apdu);
2137         c->reconnect_ok = 0;
2138     }
2139     return 1;
2140 }
2141
2142 static zoom_ret do_write_ex (ZOOM_connection c, char *buf_out, int len_out)
2143 {
2144     int r;
2145     ZOOM_Event event;
2146
2147     event = ZOOM_Event_create(ZOOM_EVENT_SEND_DATA);
2148     ZOOM_connection_put_event (c, event);
2149
2150     yaz_log (LOG_DEBUG, "do_write_ex len=%d", len_out);
2151     if ((r=cs_put (c->cs, buf_out, len_out)) < 0)
2152     {
2153         if (c->reconnect_ok)
2154         {
2155             do_close (c);
2156             c->reconnect_ok = 0;
2157             yaz_log (LOG_DEBUG, "reconnect write");
2158             c->tasks->running = 0;
2159             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
2160             return zoom_complete;
2161         }
2162         if (c->state == STATE_CONNECTING)
2163             c->error = ZOOM_ERROR_CONNECT;
2164         else
2165             c->error = ZOOM_ERROR_CONNECTION_LOST;
2166         do_close (c);
2167         return zoom_complete;
2168     }
2169     else if (r == 1)
2170     {
2171         c->mask = ZOOM_SELECT_EXCEPT;
2172         if (c->cs->io_pending & CS_WANT_WRITE)
2173             c->mask += ZOOM_SELECT_WRITE;
2174         if (c->cs->io_pending & CS_WANT_READ)
2175             c->mask += ZOOM_SELECT_READ;
2176         yaz_log (LOG_DEBUG, "do_write_ex 1 mask=%d", c->mask);
2177     }
2178     else
2179     {
2180         // c->reconnect_ok = 0;
2181         c->mask = ZOOM_SELECT_READ|ZOOM_SELECT_EXCEPT;
2182         yaz_log (LOG_DEBUG, "do_write_ex 2 mask=%d", c->mask);
2183     }
2184     return zoom_pending;
2185 }
2186
2187 static zoom_ret do_write(ZOOM_connection c)
2188 {
2189     return do_write_ex (c, c->buf_out, c->len_out);
2190 }
2191
2192
2193 ZOOM_API(const char *)
2194 ZOOM_connection_option_get (ZOOM_connection c, const char *key)
2195 {
2196     return ZOOM_options_get (c->options, key);
2197 }
2198
2199 ZOOM_API(void)
2200 ZOOM_connection_option_set (ZOOM_connection c, const char *key,
2201                                   const char *val)
2202 {
2203     ZOOM_options_set (c->options, key, val);
2204 }
2205
2206 ZOOM_API(const char *)
2207 ZOOM_resultset_option_get (ZOOM_resultset r, const char *key)
2208 {
2209     return ZOOM_options_get (r->options, key);
2210 }
2211
2212 ZOOM_API(void)
2213 ZOOM_resultset_option_set (ZOOM_resultset r, const char *key,
2214                                   const char *val)
2215 {
2216     ZOOM_options_set (r->options, key, val);
2217 }
2218
2219
2220 ZOOM_API(int)
2221 ZOOM_connection_errcode (ZOOM_connection c)
2222 {
2223     return ZOOM_connection_error (c, 0, 0);
2224 }
2225
2226 ZOOM_API(const char *)
2227 ZOOM_connection_errmsg (ZOOM_connection c)
2228 {
2229     const char *msg;
2230     ZOOM_connection_error (c, &msg, 0);
2231     return msg;
2232 }
2233
2234 ZOOM_API(const char *)
2235 ZOOM_connection_addinfo (ZOOM_connection c)
2236 {
2237     const char *addinfo;
2238     ZOOM_connection_error (c, 0, &addinfo);
2239     return addinfo;
2240 }
2241
2242 ZOOM_API(int)
2243 ZOOM_connection_error (ZOOM_connection c, const char **cp,
2244                             const char **addinfo)
2245 {
2246     int error = c->error;
2247     if (cp)
2248     {
2249         switch (error)
2250         {
2251         case ZOOM_ERROR_NONE:
2252             *cp = "No error"; break;
2253         case ZOOM_ERROR_CONNECT:
2254             *cp = "Connect failed"; break;
2255         case ZOOM_ERROR_MEMORY:
2256             *cp = "Out of memory"; break;
2257         case ZOOM_ERROR_ENCODE:
2258             *cp = "Encoding failed"; break;
2259         case ZOOM_ERROR_DECODE:
2260             *cp = "Decoding failed"; break;
2261         case ZOOM_ERROR_CONNECTION_LOST:
2262             *cp = "Connection lost"; break;
2263         case ZOOM_ERROR_INIT:
2264             *cp = "Init rejected"; break;
2265         case ZOOM_ERROR_INTERNAL:
2266             *cp = "Internal failure"; break;
2267         case ZOOM_ERROR_TIMEOUT:
2268             *cp = "Timeout"; break;
2269         default:
2270             *cp = diagbib1_str (error);
2271         }
2272     }
2273     if (addinfo)
2274     {
2275         if (c->addinfo)
2276             *addinfo = c->addinfo;
2277         else
2278             *addinfo = "";
2279     }
2280     return c->error;
2281 }
2282
2283 static int ZOOM_connection_do_io(ZOOM_connection c, int mask)
2284 {
2285     ZOOM_Event event = 0;
2286     int r = cs_look(c->cs);
2287     yaz_log (LOG_DEBUG, "ZOOM_connection_do_io c=%p mask=%d cs_look=%d",
2288              c, mask, r);
2289
2290     if (r == CS_NONE)
2291     {
2292         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
2293         c->error = ZOOM_ERROR_CONNECT;
2294         do_close (c);
2295         ZOOM_connection_put_event (c, event);
2296     }
2297     else if (r == CS_CONNECT)
2298     {
2299         int ret;
2300         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
2301
2302         ret = cs_rcvconnect (c->cs);
2303         yaz_log (LOG_DEBUG, "cs_rcvconnect returned %d", ret);
2304         if (ret == 1)
2305         {
2306             c->mask = ZOOM_SELECT_EXCEPT;
2307             if (c->cs->io_pending & CS_WANT_WRITE)
2308                 c->mask += ZOOM_SELECT_WRITE;
2309             if (c->cs->io_pending & CS_WANT_READ)
2310                 c->mask += ZOOM_SELECT_READ;
2311             ZOOM_connection_put_event (c, event);
2312         }
2313         else if (ret == 0)
2314         {
2315             ZOOM_connection_put_event (c, event);
2316             ZOOM_connection_send_init (c);
2317             c->state = STATE_ESTABLISHED;
2318         }
2319         else
2320         {
2321             c->error = ZOOM_ERROR_CONNECT;
2322             do_close (c);
2323             ZOOM_connection_put_event (c, event);
2324         }
2325     }
2326     else
2327     {
2328         if (mask & ZOOM_SELECT_READ)
2329             do_read (c);
2330         if (c->cs && (mask & ZOOM_SELECT_WRITE))
2331             do_write (c);
2332     }
2333     return 1;
2334 }
2335
2336 ZOOM_API(int)
2337 ZOOM_connection_last_event(ZOOM_connection cs)
2338 {
2339     if (!cs)
2340         return ZOOM_EVENT_NONE;
2341     return cs->last_event;
2342 }
2343
2344 ZOOM_API(int)
2345 ZOOM_event (int no, ZOOM_connection *cs)
2346 {
2347     int timeout = 5000;
2348 #if HAVE_SYS_POLL_H
2349     struct pollfd pollfds[1024];
2350     ZOOM_connection poll_cs[1024];
2351 #else
2352     struct timeval tv;
2353     fd_set input, output, except;
2354 #endif
2355     int i, r, nfds;
2356     int max_fd = 0;
2357
2358     for (i = 0; i<no; i++)
2359     {
2360         ZOOM_connection c = cs[i];
2361         ZOOM_Event event;
2362         if (c && (event = ZOOM_connection_get_event(c)))
2363         {
2364             ZOOM_Event_destroy (event);
2365             return i+1;
2366         }
2367     }
2368     for (i = 0; i<no; i++)
2369     {
2370         ZOOM_connection c = cs[i];
2371         ZOOM_Event event;
2372         if (c && ZOOM_connection_exec_task (c))
2373         {
2374             if ((event = ZOOM_connection_get_event(c)))
2375             {
2376                 ZOOM_Event_destroy (event);
2377                 return i+1;
2378             }
2379         }
2380     }
2381 #if HAVE_SYS_POLL_H
2382
2383 #else
2384     FD_ZERO (&input);
2385     FD_ZERO (&output);
2386     FD_ZERO (&except);
2387 #endif
2388     nfds = 0;
2389     for (i = 0; i<no; i++)
2390     {
2391         ZOOM_connection c = cs[i];
2392         int fd, mask;
2393         int this_timeout;
2394
2395         if (!c)
2396             continue;
2397         fd = z3950_connection_socket(c);
2398         mask = z3950_connection_mask(c);
2399
2400         if (fd == -1)
2401             continue;
2402         if (max_fd < fd)
2403             max_fd = fd;
2404
2405         this_timeout = ZOOM_options_get_int (c->options, "timeout", -1);
2406         if (this_timeout != -1 && this_timeout < timeout)
2407             timeout = this_timeout;
2408 #if HAVE_SYS_POLL_H
2409         if (mask)
2410         {
2411             short poll_events = 0;
2412
2413             if (mask & ZOOM_SELECT_READ)
2414                 poll_events += POLLIN;
2415             if (mask & ZOOM_SELECT_WRITE)
2416                 poll_events += POLLOUT;
2417             if (mask & ZOOM_SELECT_EXCEPT)
2418                 poll_events += POLLERR;
2419             pollfds[nfds].fd = fd;
2420             pollfds[nfds].events = poll_events;
2421             pollfds[nfds].revents = 0;
2422             poll_cs[nfds] = c;
2423             nfds++;
2424         }
2425 #else
2426         if (mask & ZOOM_SELECT_READ)
2427         {
2428             FD_SET (fd, &input);
2429             nfds++;
2430         }
2431         if (mask & ZOOM_SELECT_WRITE)
2432         {
2433             FD_SET (fd, &output);
2434             nfds++;
2435         }
2436         if (mask & ZOOM_SELECT_EXCEPT)
2437         {
2438             FD_SET (fd, &except);
2439             nfds++;
2440         }
2441 #endif
2442     }
2443     if (timeout >= 5000)
2444         timeout = 30;
2445
2446     if (!nfds)
2447         return 0;
2448
2449 #if HAVE_SYS_POLL_H
2450     r = poll (pollfds, nfds, timeout * 1000);
2451     for (i = 0; i<nfds; i++)
2452     {
2453         ZOOM_connection c = poll_cs[i];
2454         if (r && c->mask)
2455         {
2456             int mask = 0;
2457             if (pollfds[i].revents & POLLIN)
2458                 mask += ZOOM_SELECT_READ;
2459             if (pollfds[i].revents & POLLOUT)
2460                 mask += ZOOM_SELECT_WRITE;
2461             if (pollfds[i].revents & POLLERR)
2462                 mask += ZOOM_SELECT_EXCEPT;
2463             if (mask)
2464                 ZOOM_connection_do_io(c, mask);
2465         }
2466         else if (r == 0 && c->mask)
2467         {
2468             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
2469             /* timeout and this connection was waiting */
2470             c->error = ZOOM_ERROR_TIMEOUT;
2471             do_close (c);
2472             ZOOM_connection_put_event(c, event);
2473         }
2474     }
2475 #else
2476     tv.tv_sec = timeout;
2477     tv.tv_usec = 0;
2478     yaz_log (LOG_DEBUG, "select start");
2479     r = select (max_fd+1, &input, &output, &except, &tv);
2480     yaz_log (LOG_DEBUG, "select stop, returned r=%d", r);
2481     for (i = 0; i<no; i++)
2482     {
2483         ZOOM_connection c = cs[i];
2484         int fd, mask;
2485
2486         if (!c)
2487             continue;
2488         fd = z3950_connection_socket(c);
2489         mask = 0;
2490         if (r && c->mask)
2491         {
2492             /* no timeout and real socket */
2493             if (FD_ISSET(fd, &input))
2494                 mask += ZOOM_SELECT_READ;
2495             if (FD_ISSET(fd, &output))
2496                 mask += ZOOM_SELECT_WRITE;
2497             if (FD_ISSET(fd, &except))
2498                 mask += ZOOM_SELECT_EXCEPT;
2499             if (mask)
2500                 ZOOM_connection_do_io(c, mask);
2501         }
2502         if (r == 0 && c->mask)
2503         {
2504             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
2505             /* timeout and this connection was waiting */
2506             c->error = ZOOM_ERROR_TIMEOUT;
2507             do_close (c);
2508             yaz_log (LOG_DEBUG, "timeout");
2509             ZOOM_connection_put_event(c, event);
2510         }
2511     }
2512 #endif
2513     for (i = 0; i<no; i++)
2514     {
2515         ZOOM_connection c = cs[i];
2516         ZOOM_Event event;
2517         if (c && (event = ZOOM_connection_get_event(c)))
2518         {
2519             ZOOM_Event_destroy (event);
2520             return i+1;
2521         }
2522     }
2523     return 0;
2524 }