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 1.80 2006-06-16 12:34:32 adam Exp $
   6  */
   7 /**
   8  * \file zoom-c.c
   9  * \brief Implements ZOOM C interface.
  10  */
  11
  12 #include <assert.h>
  13 #include <string.h>
  14 #include <errno.h>
  15 #include "zoom-p.h"
  16
  17 #include <yaz/yaz-util.h>
  18 #include <yaz/xmalloc.h>
  19 #include <yaz/otherinfo.h>
  20 #include <yaz/log.h>
  21 #include <yaz/pquery.h>
  22 #include <yaz/marcdisp.h>
  23 #include <yaz/diagbib1.h>
  24 #include <yaz/charneg.h>
  25 #include <yaz/ill.h>
  26 #include <yaz/srw.h>
  27 #include <yaz/cql.h>
  28 #include <yaz/ccl.h>
  29
  30 #if HAVE_SYS_TYPES_H
  31 #include <sys/types.h>
  32 #endif
  33 #if HAVE_SYS_TIME_H
  34 #include <sys/time.h>
  35 #endif
  36 #if HAVE_SYS_POLL_H
  37 #include <sys/poll.h>
  38 #endif
  39 #if HAVE_SYS_SELECT_H
  40 #include <sys/select.h>
  41 #endif
  42 #ifdef WIN32
  43 #include <winsock.h>
  44 #endif
  45
  46 static int log_api = 0;
  47 static int log_details = 0;
  48
  49 typedef enum {
  50     zoom_pending,
  51     zoom_complete
  52 } zoom_ret;
  53
  54 static zoom_ret ZOOM_connection_send_init (ZOOM_connection c);
  55 static zoom_ret do_write_ex (ZOOM_connection c, char *buf_out, int len_out);
  56 static char *cql2pqf(ZOOM_connection c, const char *cql);
  57
  58 static void initlog()
  59 {
  60     static int log_level_initialized = 0;
  61     if (!log_level_initialized)
  62     {
  63         log_api = yaz_log_module_level("zoom");
  64         log_details = yaz_log_module_level("zoomdetails");
  65         log_level_initialized = 1;
  66     }
  67 }
  68
  69 static ZOOM_Event ZOOM_Event_create (int kind)
  70 {
  71     ZOOM_Event event = (ZOOM_Event) xmalloc (sizeof(*event));
  72     event->kind = kind;
  73     event->next = 0;
  74     event->prev = 0;
  75     yaz_log(log_details, "ZOOM_event_create(%d)", kind);
  76     return event;
  77 }
  78
  79 static void ZOOM_Event_destroy (ZOOM_Event event)
  80 {
  81     xfree (event);
  82 }
  83
  84 static void ZOOM_connection_put_event (ZOOM_connection c, ZOOM_Event event)
  85 {
  86     if (c->m_queue_back)
  87     {
  88         c->m_queue_back->prev = event;
  89         assert (c->m_queue_front);
  90     }
  91     else
  92     {
  93         assert (!c->m_queue_front);
  94         c->m_queue_front = event;
  95     }
  96     event->next = c->m_queue_back;
  97     event->prev = 0;
  98     c->m_queue_back = event;
  99 }
 100
 101 static ZOOM_Event ZOOM_connection_get_event(ZOOM_connection c)
 102 {
 103     ZOOM_Event event = c->m_queue_front;
 104     if (!event)
 105     {
 106         c->last_event = ZOOM_EVENT_NONE;
 107         return 0;
 108     }
 109     assert (c->m_queue_back);
 110     c->m_queue_front = event->prev;
 111     if (c->m_queue_front)
 112     {
 113         assert (c->m_queue_back);
 114         c->m_queue_front->next = 0;
 115     }
 116     else
 117         c->m_queue_back = 0;
 118     c->last_event = event->kind;
 119     return event;
 120 }
 121
 122
 123 static void set_dset_error (ZOOM_connection c, int error,
 124                             const char *dset,
 125                             const char *addinfo, const char *addinfo2)
 126 {
 127     char *cp;
 128
 129     xfree (c->addinfo);
 130     c->addinfo = 0;
 131     c->error = error;
 132     if (!c->diagset || strcmp(dset, c->diagset))
 133     {
 134         xfree(c->diagset);
 135         c->diagset = xstrdup(dset);
 136         /* remove integer part from SRW diagset .. */
 137         if ((cp = strrchr(c->diagset, '/')))
 138            *cp = '\0';
 139     }
 140     if (addinfo && addinfo2)
 141     {
 142         c->addinfo = (char*) xmalloc(strlen(addinfo) + strlen(addinfo2) + 2);
 143         strcpy(c->addinfo, addinfo);
 144         strcat(c->addinfo, addinfo2);
 145     }
 146     else if (addinfo)
 147         c->addinfo = xstrdup(addinfo);
 148     if (error)
 149         yaz_log(log_api, "%p set_dset_error %s %s:%d %s %s",
 150                 c, c->host_port ? c->host_port : "<>", dset, error,
 151                 addinfo ? addinfo : "",
 152                 addinfo2 ? addinfo2 : "");
 153 }
 154
 155 #if HAVE_XML2
 156 static void set_HTTP_error (ZOOM_connection c, int error,
 157                             const char *addinfo, const char *addinfo2)
 158 {
 159     set_dset_error(c, error, "HTTP", addinfo, addinfo2);
 160 }
 161 #endif
 162
 163 static void set_ZOOM_error (ZOOM_connection c, int error,
 164                             const char *addinfo)
 165 {
 166     set_dset_error(c, error, "ZOOM", addinfo, 0);
 167 }
 168
 169 static void clear_error (ZOOM_connection c)
 170 {
 171     /*
 172      * If an error is tied to an operation then it's ok to clear: for
 173      * example, a diagnostic returned from a search is cleared by a
 174      * subsequent search.  However, problems such as Connection Lost
 175      * or Init Refused are not cleared, because they are not
 176      * recoverable: doing another search doesn't help.
 177      */
 178     switch (c->error)
 179     {
 180     case ZOOM_ERROR_CONNECT:
 181     case ZOOM_ERROR_MEMORY:
 182     case ZOOM_ERROR_DECODE:
 183     case ZOOM_ERROR_CONNECTION_LOST:
 184     case ZOOM_ERROR_INIT:
 185     case ZOOM_ERROR_INTERNAL:
 186     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
 187         break;
 188     default:
 189         set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 190     }
 191 }
 192
 193 ZOOM_task ZOOM_connection_add_task (ZOOM_connection c, int which)
 194 {
 195     ZOOM_task *taskp = &c->tasks;
 196     while (*taskp)
 197         taskp = &(*taskp)->next;
 198     *taskp = (ZOOM_task) xmalloc (sizeof(**taskp));
 199     (*taskp)->running = 0;
 200     (*taskp)->which = which;
 201     (*taskp)->next = 0;
 202     clear_error (c);
 203     return *taskp;
 204 }
 205
 206 ZOOM_task ZOOM_connection_insert_task (ZOOM_connection c, int which)
 207 {
 208     ZOOM_task task = (ZOOM_task) xmalloc (sizeof(*task));
 209
 210     task->next = c->tasks;
 211     c->tasks = task;
 212
 213     task->running = 0;
 214     task->which = which;
 215     clear_error (c);
 216     return task;
 217 }
 218
 219 void ZOOM_connection_remove_task (ZOOM_connection c)
 220 {
 221     ZOOM_task task = c->tasks;
 222
 223     if (task)
 224     {
 225         c->tasks = task->next;
 226         switch (task->which)
 227         {
 228         case ZOOM_TASK_SEARCH:
 229             ZOOM_resultset_destroy (task->u.search.resultset);
 230             break;
 231         case ZOOM_TASK_RETRIEVE:
 232             ZOOM_resultset_destroy (task->u.retrieve.resultset);
 233             break;
 234         case ZOOM_TASK_CONNECT:
 235             break;
 236         case ZOOM_TASK_SCAN:
 237             ZOOM_scanset_destroy (task->u.scan.scan);
 238             break;
 239         case ZOOM_TASK_PACKAGE:
 240             ZOOM_package_destroy (task->u.package);
 241             break;
 242         case ZOOM_TASK_SORT:
 243             ZOOM_resultset_destroy (task->u.sort.resultset);
 244             ZOOM_query_destroy(task->u.sort.q);
 245             break;
 246         default:
 247             assert (0);
 248         }
 249         xfree (task);
 250
 251         if (!c->tasks)
 252         {
 253             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_END);
 254             ZOOM_connection_put_event(c, event);
 255         }
 256     }
 257 }
 258
 259 static int ZOOM_connection_exec_task (ZOOM_connection c);
 260
 261 void ZOOM_connection_remove_tasks (ZOOM_connection c)
 262 {
 263     while (c->tasks)
 264         ZOOM_connection_remove_task(c);
 265 }
 266
 267 static ZOOM_record record_cache_lookup (ZOOM_resultset r, int pos);
 268
 269 ZOOM_API(ZOOM_connection)
 270 ZOOM_connection_create (ZOOM_options options)
 271 {
 272     ZOOM_connection c = (ZOOM_connection) xmalloc (sizeof(*c));
 273
 274     initlog();
 275
 276     yaz_log(log_api, "%p ZOOM_connection_create", c);
 277
 278     c->proto = PROTO_Z3950;
 279     c->cs = 0;
 280     c->mask = 0;
 281     c->reconnect_ok = 0;
 282     c->state = STATE_IDLE;
 283     c->addinfo = 0;
 284     c->diagset = 0;
 285     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 286     c->buf_in = 0;
 287     c->len_in = 0;
 288     c->buf_out = 0;
 289     c->len_out = 0;
 290     c->resultsets = 0;
 291
 292     c->options = ZOOM_options_create_with_parent(options);
 293
 294     c->host_port = 0;
 295     c->path = 0;
 296     c->proxy = 0;
 297
 298     c->charset = c->lang = 0;
 299
 300     c->cookie_out = 0;
 301     c->cookie_in = 0;
 302     c->client_IP = 0;
 303     c->tasks = 0;
 304
 305     c->odr_in = odr_createmem (ODR_DECODE);
 306     c->odr_out = odr_createmem (ODR_ENCODE);
 307
 308     c->async = 0;
 309     c->support_named_resultsets = 0;
 310     c->last_event = ZOOM_EVENT_NONE;
 311
 312     c->m_queue_front = 0;
 313     c->m_queue_back = 0;
 314     return c;
 315 }
 316
 317 /* set database names. Take local databases (if set); otherwise
 318    take databases given in ZURL (if set); otherwise use Default */
 319 static char **set_DatabaseNames (ZOOM_connection con, ZOOM_options options,
 320                                  int *num)
 321 {
 322     char **databaseNames;
 323     const char *cp = ZOOM_options_get (options, "databaseName");
 324
 325     if ((!cp || !*cp) && con->host_port)
 326     {
 327         if (strncmp (con->host_port, "unix:", 5) == 0)
 328             cp = strchr(con->host_port+5, ':');
 329         else
 330             cp = strchr(con->host_port, '/');
 331         if (cp)
 332             cp++;
 333     }
 334     if (!cp)
 335         cp = "Default";
 336     nmem_strsplit(con->odr_out->mem, "+", cp,  &databaseNames, num);
 337     return databaseNames;
 338 }
 339
 340 ZOOM_API(ZOOM_connection)
 341 ZOOM_connection_new (const char *host, int portnum)
 342 {
 343     ZOOM_connection c = ZOOM_connection_create (0);
 344
 345     ZOOM_connection_connect (c, host, portnum);
 346     return c;
 347 }
 348
 349 static zoom_sru_mode get_sru_mode_from_string(const char *s)
 350 {
 351     if (!s || !*s)
 352         return zoom_sru_soap;
 353     if (!yaz_matchstr(s, "soap"))
 354         return zoom_sru_soap;
 355     else if (!yaz_matchstr(s, "get"))
 356         return zoom_sru_get;
 357     else if (!yaz_matchstr(s, "post"))
 358         return zoom_sru_post;
 359     return zoom_sru_error;
 360 }
 361
 362 ZOOM_API(void)
 363 ZOOM_connection_connect(ZOOM_connection c,
 364                         const char *host, int portnum)
 365 {
 366     const char *val;
 367     ZOOM_task task;
 368
 369     initlog();
 370
 371     yaz_log(log_api, "%p ZOOM_connection_connect host=%s portnum=%d",
 372             c, host, portnum);
 373
 374     if (c->cs)
 375     {
 376         yaz_log(log_details, "%p ZOOM_connection_connect reconnect ok", c);
 377         c->reconnect_ok = 1;
 378         return;
 379     }
 380     yaz_log(log_details, "%p ZOOM_connection_connect connect", c);
 381     xfree (c->proxy);
 382     val = ZOOM_options_get (c->options, "proxy");
 383     if (val && *val)
 384     {
 385         yaz_log(log_details, "%p ZOOM_connection_connect proxy=%s", c, val);
 386         c->proxy = xstrdup (val);
 387     }
 388     else
 389         c->proxy = 0;
 390
 391     xfree (c->charset);
 392     val = ZOOM_options_get (c->options, "charset");
 393     if (val && *val)
 394     {
 395         yaz_log(log_details, "%p ZOOM_connection_connect charset=%s", c, val);
 396         c->charset = xstrdup (val);
 397     }
 398     else
 399         c->charset = 0;
 400
 401     xfree (c->lang);
 402     val = ZOOM_options_get (c->options, "lang");
 403     if (val && *val)
 404     {
 405         yaz_log(log_details, "%p ZOOM_connection_connect lang=%s", c, val);
 406         c->lang = xstrdup (val);
 407     }
 408     else
 409         c->lang = 0;
 410
 411     val = ZOOM_options_get (c->options, "sru");
 412     c->sru_mode = get_sru_mode_from_string(val);
 413
 414     xfree (c->host_port);
 415     if (portnum)
 416     {
 417         char hostn[128];
 418         sprintf (hostn, "%.80s:%d", host, portnum);
 419         c->host_port = xstrdup(hostn);
 420     }
 421     else
 422         c->host_port = xstrdup(host);
 423
 424     {
 425         /*
 426          * If the "<scheme>:" part of the host string is preceded by one
 427          * or more comma-separated <name>=<value> pairs, these are taken
 428          * to be options to be set on the connection object.  Among other
 429          * applications, this facility can be used to embed authentication
 430          * in a host string:
 431          *          user=admin,password=secret,tcp:localhost:9999
 432          */
 433         char *remainder = c->host_port;
 434         char *pcolon = strchr(remainder, ':');
 435         char *pcomma;
 436         char *pequals;
 437         while ((pcomma = strchr(remainder, ',')) != 0 &&
 438                (pcolon == 0 || pcomma < pcolon)) {
 439             *pcomma = '\0';
 440             if ((pequals = strchr(remainder, '=')) != 0) {
 441                 *pequals = '\0';
 442                 /*printf("# setting '%s'='%s'\n", remainder, pequals+1);*/
 443                 ZOOM_connection_option_set(c, remainder, pequals+1);
 444             }
 445             remainder = pcomma+1;
 446         }
 447
 448         if (remainder != c->host_port) {
 449             xfree(c->host_port);
 450             c->host_port = xstrdup(remainder);
 451             /*printf("# reset hp='%s'\n", remainder);*/
 452         }
 453     }
 454
 455     ZOOM_options_set(c->options, "host", c->host_port);
 456
 457     val = ZOOM_options_get (c->options, "cookie");
 458     if (val && *val)
 459     {
 460         yaz_log(log_details, "%p ZOOM_connection_connect cookie=%s", c, val);
 461         c->cookie_out = xstrdup (val);
 462     }
 463
 464     val = ZOOM_options_get (c->options, "clientIP");
 465     if (val && *val)
 466     {
 467         yaz_log(log_details, "%p ZOOM_connection_connect clientIP=%s",
 468                 c, val);
 469         c->client_IP = xstrdup (val);
 470     }
 471
 472     c->async = ZOOM_options_get_bool (c->options, "async", 0);
 473     yaz_log(log_details, "%p ZOOM_connection_connect async=%d", c, c->async);
 474
 475     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 476
 477     task = ZOOM_connection_add_task (c, ZOOM_TASK_CONNECT);
 478
 479     if (!c->async)
 480     {
 481         while (ZOOM_event (1, &c))
 482             ;
 483     }
 484 }
 485
 486 ZOOM_API(ZOOM_query)
 487 ZOOM_query_create(void)
 488 {
 489     ZOOM_query s = (ZOOM_query) xmalloc (sizeof(*s));
 490
 491     yaz_log(log_details, "%p ZOOM_query_create", s);
 492     s->refcount = 1;
 493     s->z_query = 0;
 494     s->sort_spec = 0;
 495     s->odr = odr_createmem (ODR_ENCODE);
 496     s->query_string = 0;
 497
 498     return s;
 499 }
 500
 501 ZOOM_API(void)
 502 ZOOM_query_destroy(ZOOM_query s)
 503 {
 504     if (!s)
 505         return;
 506
 507     (s->refcount)--;
 508     yaz_log(log_details, "%p ZOOM_query_destroy count=%d", s, s->refcount);
 509     if (s->refcount == 0)
 510     {
 511         odr_destroy (s->odr);
 512         xfree (s);
 513     }
 514 }
 515
 516 ZOOM_API(int)
 517 ZOOM_query_prefix(ZOOM_query s, const char *str)
 518 {
 519     s->query_string = odr_strdup(s->odr, str);
 520     s->z_query = (Z_Query *) odr_malloc (s->odr, sizeof(*s->z_query));
 521     s->z_query->which = Z_Query_type_1;
 522     s->z_query->u.type_1 =  p_query_rpn(s->odr, PROTO_Z3950, str);
 523     if (!s->z_query->u.type_1)
 524     {
 525         yaz_log(log_details, "%p ZOOM_query_prefix str=%s failed", s, str);
 526         s->z_query = 0;
 527         return -1;
 528     }
 529     yaz_log(log_details, "%p ZOOM_query_prefix str=%s", s, str);
 530     return 0;
 531 }
 532
 533 ZOOM_API(int)
 534 ZOOM_query_cql(ZOOM_query s, const char *str)
 535 {
 536     Z_External *ext;
 537
 538     s->query_string = odr_strdup(s->odr, str);
 539
 540     ext = (Z_External *) odr_malloc(s->odr, sizeof(*ext));
 541     ext->direct_reference = odr_getoidbystr(s->odr, "1.2.840.10003.16.2");
 542     ext->indirect_reference = 0;
 543     ext->descriptor = 0;
 544     ext->which = Z_External_CQL;
 545     ext->u.cql = s->query_string;
 546
 547     s->z_query = (Z_Query *) odr_malloc (s->odr, sizeof(*s->z_query));
 548     s->z_query->which = Z_Query_type_104;
 549     s->z_query->u.type_104 =  ext;
 550
 551     yaz_log(log_details, "%p ZOOM_query_cql str=%s", s, str);
 552
 553     return 0;
 554 }
 555
 556 /*
 557  * Translate the CQL string client-side into RPN which is passed to
 558  * the server.  This is useful for server's that don't themselves
 559  * support CQL, for which ZOOM_query_cql() is useless.  `conn' is used
 560  * only as a place to stash diagnostics if compilation fails; if this
 561  * information is not needed, a null pointer may be used.
 562  */
 563 ZOOM_API(int)
 564 ZOOM_query_cql2rpn(ZOOM_query s, const char *str, ZOOM_connection conn)
 565 {
 566     char *rpn;
 567     int ret;
 568     ZOOM_connection freeme = 0;
 569
 570     yaz_log(log_details, "%p ZOOM_query_cql2rpn str=%s conn=%p", s, str, conn);
 571     if (conn == 0)
 572         conn = freeme = ZOOM_connection_create(0);
 573
 574     rpn = cql2pqf(conn, str);
 575     if (freeme != 0)
 576         ZOOM_connection_destroy(freeme);
 577     if (rpn == 0)
 578         return -1;
 579
 580     ret = ZOOM_query_prefix(s, rpn);
 581     xfree(rpn);
 582     return ret;
 583 }
 584
 585 /*
 586  * Analogous in every way to ZOOM_query_cql2rpn(), except that there
 587  * is no analogous ZOOM_query_ccl() that just sends uninterpreted CCL
 588  * to the server, as the YAZ GFS doesn't know how to handle this.
 589  */
 590 ZOOM_API(int)
 591     ZOOM_query_ccl2rpn(ZOOM_query s, const char *str, const char *config,
 592                        int *ccl_error, const char **error_string,
 593                        int *error_pos)
 594 {
 595     int ret;
 596     struct ccl_rpn_node *rpn;
 597     CCL_bibset bibset = ccl_qual_mk();
 598
 599     if (config)
 600         ccl_qual_buf(bibset, config);
 601
 602     rpn = ccl_find_str(bibset, str, ccl_error, error_pos);
 603     if (!rpn)
 604     {
 605         *error_string = ccl_err_msg(*ccl_error);
 606         ret = -1;
 607     }
 608     else
 609     {
 610         WRBUF wr = wrbuf_alloc();
 611         ccl_pquery(wr, rpn);
 612         ccl_rpn_delete(rpn);
 613         ret = ZOOM_query_prefix(s, wrbuf_buf(wr));
 614         wrbuf_free(wr, 1);
 615     }
 616     ccl_qual_rm(&bibset);
 617     return ret;
 618 }
 619
 620 ZOOM_API(int)
 621 ZOOM_query_sortby(ZOOM_query s, const char *criteria)
 622 {
 623     s->sort_spec = yaz_sort_spec (s->odr, criteria);
 624     if (!s->sort_spec)
 625     {
 626         yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s failed",
 627                 s, criteria);
 628         return -1;
 629     }
 630     yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s", s, criteria);
 631     return 0;
 632 }
 633
 634 static zoom_ret do_write(ZOOM_connection c);
 635
 636 ZOOM_API(void)
 637 ZOOM_connection_destroy(ZOOM_connection c)
 638 {
 639     ZOOM_resultset r;
 640     if (!c)
 641         return;
 642     yaz_log(log_api, "%p ZOOM_connection_destroy", c);
 643     if (c->cs)
 644         cs_close (c->cs);
 645     for (r = c->resultsets; r; r = r->next)
 646         r->connection = 0;
 647
 648     xfree (c->buf_in);
 649     xfree (c->addinfo);
 650     xfree (c->diagset);
 651     odr_destroy (c->odr_in);
 652     odr_destroy (c->odr_out);
 653     ZOOM_options_destroy (c->options);
 654     ZOOM_connection_remove_tasks (c);
 655     xfree (c->host_port);
 656     xfree (c->path);
 657     xfree (c->proxy);
 658     xfree (c->charset);
 659     xfree (c->lang);
 660     xfree (c->cookie_out);
 661     xfree (c->cookie_in);
 662     xfree (c->client_IP);
 663     xfree (c);
 664 }
 665
 666 void ZOOM_resultset_addref (ZOOM_resultset r)
 667 {
 668     if (r)
 669     {
 670         (r->refcount)++;
 671         yaz_log(log_details, "%p ZOOM_resultset_addref count=%d",
 672                 r, r->refcount);
 673     }
 674 }
 675
 676 ZOOM_resultset ZOOM_resultset_create ()
 677 {
 678     int i;
 679     ZOOM_resultset r = (ZOOM_resultset) xmalloc (sizeof(*r));
 680
 681     initlog();
 682
 683     yaz_log(log_details, "%p ZOOM_resultset_create", r);
 684     r->refcount = 1;
 685     r->size = 0;
 686     r->odr = odr_createmem (ODR_ENCODE);
 687     r->start = 0;
 688     r->piggyback = 1;
 689     r->setname = 0;
 690     r->schema = 0;
 691     r->count = 0;
 692     r->step = 0;
 693     for (i = 0; i<RECORD_HASH_SIZE; i++)
 694         r->record_hash[i] = 0;
 695     r->r_sort_spec = 0;
 696     r->query = 0;
 697     r->connection = 0;
 698     r->next = 0;
 699     return r;
 700 }
 701
 702 ZOOM_API(ZOOM_resultset)
 703 ZOOM_connection_search_pqf(ZOOM_connection c, const char *q)
 704 {
 705     ZOOM_resultset r;
 706     ZOOM_query s = ZOOM_query_create();
 707
 708     ZOOM_query_prefix (s, q);
 709
 710     r = ZOOM_connection_search (c, s);
 711     ZOOM_query_destroy (s);
 712     return r;
 713 }
 714
 715 ZOOM_API(ZOOM_resultset)
 716 ZOOM_connection_search(ZOOM_connection c, ZOOM_query q)
 717 {
 718     ZOOM_resultset r = ZOOM_resultset_create ();
 719     ZOOM_task task;
 720     const char *cp;
 721
 722     yaz_log(log_api, "%p ZOOM_connection_search set %p query %p", c, r, q);
 723     r->r_sort_spec = q->sort_spec;
 724     r->query = q;
 725
 726     r->options = ZOOM_options_create_with_parent(c->options);
 727
 728     r->start = ZOOM_options_get_int(r->options, "start", 0);
 729     r->count = ZOOM_options_get_int(r->options, "count", 0);
 730     {
 731         /* If "presentChunk" is defined use that; otherwise "step" */
 732         const char *cp = ZOOM_options_get (r->options, "presentChunk");
 733         r->step = ZOOM_options_get_int(r->options,
 734                                        (cp != 0 ? "presentChunk": "step"), 0);
 735     }
 736     r->piggyback = ZOOM_options_get_bool (r->options, "piggyback", 1);
 737     cp = ZOOM_options_get (r->options, "setname");
 738     if (cp)
 739         r->setname = xstrdup(cp);
 740     cp = ZOOM_options_get (r->options, "schema");
 741     if (cp)
 742         r->schema = xstrdup(cp);
 743
 744     r->connection = c;
 745
 746     r->next = c->resultsets;
 747     c->resultsets = r;
 748
 749     if (c->host_port && c->proto == PROTO_HTTP)
 750     {
 751         if (!c->cs)
 752         {
 753             yaz_log(log_details, "ZOOM_connection_search: no comstack");
 754             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 755         }
 756         else
 757         {
 758             yaz_log(log_details, "ZOOM_connection_search: reconnect");
 759             c->reconnect_ok = 1;
 760         }
 761     }
 762
 763     task = ZOOM_connection_add_task (c, ZOOM_TASK_SEARCH);
 764     task->u.search.resultset = r;
 765     ZOOM_resultset_addref (r);
 766
 767     (q->refcount)++;
 768
 769     if (!c->async)
 770     {
 771         while (ZOOM_event (1, &c))
 772             ;
 773     }
 774     return r;
 775 }
 776
 777 /*
 778  * This is the old result-set sorting API, which is maintained only
 779  * for the sake of binary compatibility.  There is no reason ever to
 780  * use this rather than ZOOM_resultset_sort1().
 781  */
 782 ZOOM_API(void)
 783 ZOOM_resultset_sort(ZOOM_resultset r,
 784                     const char *sort_type, const char *sort_spec)
 785 {
 786     (void) ZOOM_resultset_sort1(r, sort_type, sort_spec);
 787 }
 788
 789 ZOOM_API(int)
 790 ZOOM_resultset_sort1(ZOOM_resultset r,
 791                      const char *sort_type, const char *sort_spec)
 792 {
 793     ZOOM_connection c = r->connection;
 794     ZOOM_task task;
 795     ZOOM_query newq;
 796
 797     newq = ZOOM_query_create();
 798     if (ZOOM_query_sortby(newq, sort_spec) < 0)
 799         return -1;
 800
 801     yaz_log(log_api, "%p ZOOM_resultset_sort r=%p sort_type=%s sort_spec=%s",
 802             r, r, sort_type, sort_spec);
 803     if (!c)
 804         return 0;
 805
 806     if (c->host_port && c->proto == PROTO_HTTP)
 807     {
 808         if (!c->cs)
 809         {
 810             yaz_log(log_details, "%p ZOOM_resultset_sort: no comstack", r);
 811             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 812         }
 813         else
 814         {
 815             yaz_log(log_details, "%p ZOOM_resultset_sort: prepare reconnect",
 816                     r);
 817             c->reconnect_ok = 1;
 818         }
 819     }
 820
 821     ZOOM_resultset_cache_reset(r);
 822     task = ZOOM_connection_add_task (c, ZOOM_TASK_SORT);
 823     task->u.sort.resultset = r;
 824     task->u.sort.q = newq;
 825
 826     ZOOM_resultset_addref (r);
 827
 828     if (!c->async)
 829     {
 830         while (ZOOM_event (1, &c))
 831             ;
 832     }
 833
 834     return 0;
 835 }
 836
 837 ZOOM_API(void)
 838     ZOOM_resultset_cache_reset(ZOOM_resultset r)
 839 {
 840     int i;
 841     for (i = 0; i<RECORD_HASH_SIZE; i++)
 842     {
 843         ZOOM_record_cache rc;
 844         for (rc = r->record_hash[i]; rc; rc = rc->next)
 845         {
 846             if (rc->rec.wrbuf_marc)
 847                 wrbuf_free (rc->rec.wrbuf_marc, 1);
 848             if (rc->rec.wrbuf_iconv)
 849                 wrbuf_free (rc->rec.wrbuf_iconv, 1);
 850             if (rc->rec.wrbuf_opac)
 851                 wrbuf_free (rc->rec.wrbuf_opac, 1);
 852         }
 853         r->record_hash[i] = 0;
 854     }
 855 }
 856
 857 ZOOM_API(void)
 858 ZOOM_resultset_destroy(ZOOM_resultset r)
 859 {
 860     if (!r)
 861         return;
 862     (r->refcount)--;
 863     yaz_log(log_details, "%p ZOOM_resultset_destroy r=%p count=%d",
 864             r, r, r->refcount);
 865     if (r->refcount == 0)
 866     {
 867         ZOOM_resultset_cache_reset(r);
 868
 869         if (r->connection)
 870         {
 871             /* remove ourselves from the resultsets in connection */
 872             ZOOM_resultset *rp = &r->connection->resultsets;
 873             while (1)
 874             {
 875                 assert (*rp);   /* we must be in this list!! */
 876                 if (*rp == r)
 877                 {   /* OK, we're here - take us out of it */
 878                     *rp = (*rp)->next;
 879                     break;
 880                 }
 881                 rp = &(*rp)->next;
 882             }
 883         }
 884         ZOOM_query_destroy (r->query);
 885         ZOOM_options_destroy (r->options);
 886         odr_destroy (r->odr);
 887         xfree (r->setname);
 888         xfree (r->schema);
 889         xfree (r);
 890     }
 891 }
 892
 893 ZOOM_API(size_t)
 894 ZOOM_resultset_size (ZOOM_resultset r)
 895 {
 896     return r->size;
 897 }
 898
 899 static void do_close (ZOOM_connection c)
 900 {
 901     if (c->cs)
 902         cs_close(c->cs);
 903     c->cs = 0;
 904     c->mask = 0;
 905     c->state = STATE_IDLE;
 906 }
 907
 908 static void ZOOM_resultset_retrieve (ZOOM_resultset r,
 909                                      int force_sync, int start, int count)
 910 {
 911     ZOOM_task task;
 912     ZOOM_connection c;
 913     const char *cp;
 914
 915     if (!r)
 916         return;
 917     yaz_log(log_details, "%p ZOOM_resultset_retrieve force_sync=%d start=%d"
 918             " count=%d", r, force_sync, start, count);
 919     c = r->connection;
 920     if (!c)
 921         return;
 922
 923     if (c->host_port && c->proto == PROTO_HTTP)
 924     {
 925         if (!c->cs)
 926         {
 927             yaz_log(log_details, "%p ZOOM_resultset_retrieve: no comstack", r);
 928             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 929         }
 930         else
 931         {
 932             yaz_log(log_details, "%p ZOOM_resultset_retrieve: prepare "
 933                     "reconnect", r);
 934             c->reconnect_ok = 1;
 935         }
 936     }
 937     task = ZOOM_connection_add_task (c, ZOOM_TASK_RETRIEVE);
 938     task->u.retrieve.resultset = r;
 939     task->u.retrieve.start = start;
 940     task->u.retrieve.count = count;
 941
 942     cp = ZOOM_options_get (r->options, "schema");
 943     if (cp)
 944     {
 945         if (!r->schema || strcmp(r->schema, cp))
 946         {
 947             xfree(r->schema);
 948             r->schema = xstrdup(cp);
 949         }
 950     }
 951
 952     ZOOM_resultset_addref (r);
 953
 954     if (!r->connection->async || force_sync)
 955         while (r->connection && ZOOM_event (1, &r->connection))
 956             ;
 957 }
 958
 959 ZOOM_API(void)
 960 ZOOM_resultset_records (ZOOM_resultset r, ZOOM_record *recs,
 961                         size_t start, size_t count)
 962 {
 963     int force_present = 0;
 964
 965     if (!r)
 966         return ;
 967     yaz_log(log_api, "%p ZOOM_resultset_records r=%p start=%ld count=%ld",
 968             r, r, (long) start, (long) count);
 969     if (count && recs)
 970         force_present = 1;
 971     ZOOM_resultset_retrieve (r, force_present, start, count);
 972     if (force_present)
 973     {
 974         size_t i;
 975         for (i = 0; i< count; i++)
 976             recs[i] = ZOOM_resultset_record_immediate (r, i+start);
 977     }
 978 }
 979
 980 static void get_cert(ZOOM_connection c)
 981 {
 982     char *cert_buf;
 983     int cert_len;
 984
 985     if (cs_get_peer_certificate_x509(c->cs, &cert_buf, &cert_len))
 986     {
 987         ZOOM_connection_option_setl(c, "sslPeerCert",
 988                                     cert_buf, cert_len);
 989         xfree(cert_buf);
 990     }
 991 }
 992
 993 static zoom_ret do_connect (ZOOM_connection c)
 994 {
 995     void *add;
 996     const char *effective_host;
 997
 998     if (c->proxy)
 999         effective_host = c->proxy;
1000     else
1001         effective_host = c->host_port;
1002
1003     yaz_log(log_details, "%p do_connect effective_host=%s", c, effective_host);
1004
1005     if (c->cs)
1006         cs_close(c->cs);
1007     c->cs = cs_create_host (effective_host, 0, &add);
1008
1009     if (c->cs && c->cs->protocol == PROTO_HTTP)
1010     {
1011 #if HAVE_XML2
1012         const char *path = 0;
1013
1014         c->proto = PROTO_HTTP;
1015         cs_get_host_args(c->host_port, &path);
1016         xfree(c->path);
1017         c->path = (char*) xmalloc(strlen(path)+2);
1018         c->path[0] = '/';
1019         strcpy (c->path+1, path);
1020 #else
1021         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_PROTOCOL, "SRW");
1022         do_close(c);
1023         return zoom_complete;
1024 #endif
1025     }
1026     if (c->cs)
1027     {
1028         int ret = cs_connect (c->cs, add);
1029         if (ret == 0)
1030         {
1031             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
1032             ZOOM_connection_put_event(c, event);
1033             get_cert(c);
1034             if (c->proto == PROTO_Z3950)
1035                 ZOOM_connection_send_init(c);
1036             else
1037             {
1038                 /* no init request for SRW .. */
1039                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
1040                 ZOOM_connection_remove_task (c);
1041                 c->mask = 0;
1042                 ZOOM_connection_exec_task (c);
1043             }
1044             c->state = STATE_ESTABLISHED;
1045             return zoom_pending;
1046         }
1047         else if (ret > 0)
1048         {
1049             c->state = STATE_CONNECTING;
1050             c->mask = ZOOM_SELECT_EXCEPT;
1051             if (c->cs->io_pending & CS_WANT_WRITE)
1052                 c->mask += ZOOM_SELECT_WRITE;
1053             if (c->cs->io_pending & CS_WANT_READ)
1054                 c->mask += ZOOM_SELECT_READ;
1055             return zoom_pending;
1056         }
1057     }
1058     c->state = STATE_IDLE;
1059     set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
1060     return zoom_complete;
1061 }
1062
1063 int z3950_connection_socket(ZOOM_connection c)
1064 {
1065     if (c->cs)
1066         return cs_fileno(c->cs);
1067     return -1;
1068 }
1069
1070 int z3950_connection_mask(ZOOM_connection c)
1071 {
1072     if (c->cs)
1073         return c->mask;
1074     return 0;
1075 }
1076
1077 static void otherInfo_attach (ZOOM_connection c, Z_APDU *a, ODR out)
1078 {
1079     int i;
1080     for (i = 0; i<200; i++)
1081     {
1082         size_t len;
1083         Z_OtherInformation **oi;
1084         char buf[80];
1085         const char *val;
1086         const char *cp;
1087         int oidval;
1088
1089         sprintf (buf, "otherInfo%d", i);
1090         val = ZOOM_options_get (c->options, buf);
1091         if (!val)
1092             break;
1093         cp = strchr(val, ':');
1094         if (!cp)
1095             continue;
1096         len = cp - val;
1097         if (len >= sizeof(buf))
1098             len = sizeof(buf)-1;
1099         memcpy (buf, val, len);
1100         buf[len] = '\0';
1101         oidval = oid_getvalbyname (buf);
1102         if (oidval == VAL_NONE)
1103             continue;
1104
1105         yaz_oi_APDU(a, &oi);
1106         yaz_oi_set_string_oidval(oi, out, oidval, 1, cp+1);
1107     }
1108 }
1109
1110 static int encode_APDU(ZOOM_connection c, Z_APDU *a, ODR out)
1111 {
1112     assert (a);
1113     if (c->cookie_out)
1114     {
1115         Z_OtherInformation **oi;
1116         yaz_oi_APDU(a, &oi);
1117         yaz_oi_set_string_oidval(oi, out, VAL_COOKIE, 1, c->cookie_out);
1118     }
1119     if (c->client_IP)
1120     {
1121         Z_OtherInformation **oi;
1122         yaz_oi_APDU(a, &oi);
1123         yaz_oi_set_string_oidval(oi, out, VAL_CLIENT_IP, 1, c->client_IP);
1124     }
1125     otherInfo_attach (c, a, out);
1126     if (!z_APDU(out, &a, 0, 0))
1127     {
1128         FILE *outf = fopen("/tmp/apdu.txt", "a");
1129         if (a && outf)
1130         {
1131             ODR odr_pr = odr_createmem(ODR_PRINT);
1132             fprintf (outf, "a=%p\n", a);
1133             odr_setprint(odr_pr, outf);
1134             z_APDU(odr_pr, &a, 0, 0);
1135             odr_destroy(odr_pr);
1136         }
1137         yaz_log(log_api, "%p encoding_APDU: encoding failed", c);
1138         set_ZOOM_error(c, ZOOM_ERROR_ENCODE, 0);
1139         odr_reset(out);
1140         return -1;
1141     }
1142     yaz_log(log_details, "%p encoding_APDU encoding OK", c);
1143     return 0;
1144 }
1145
1146 static zoom_ret send_APDU (ZOOM_connection c, Z_APDU *a)
1147 {
1148     ZOOM_Event event;
1149     assert (a);
1150     if (encode_APDU(c, a, c->odr_out))
1151         return zoom_complete;
1152     yaz_log(log_details, "%p send APDU type=%d", c, a->which);
1153     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1154     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
1155     ZOOM_connection_put_event (c, event);
1156     odr_reset(c->odr_out);
1157     return do_write (c);
1158 }
1159
1160 /* returns 1 if PDU was sent OK (still pending )
1161            0 if PDU was not sent OK (nothing to wait for)
1162 */
1163
1164 static zoom_ret ZOOM_connection_send_init (ZOOM_connection c)
1165 {
1166     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_initRequest);
1167     Z_InitRequest *ireq = apdu->u.initRequest;
1168     Z_IdAuthentication *auth = (Z_IdAuthentication *)
1169         odr_malloc(c->odr_out, sizeof(*auth));
1170     const char *auth_groupId = ZOOM_options_get (c->options, "group");
1171     const char *auth_userId = ZOOM_options_get (c->options, "user");
1172     const char *auth_password = ZOOM_options_get (c->options, "password");
1173     char *version;
1174
1175     /* support the pass for backwards compatibility */
1176     if (!auth_password)
1177         auth_password = ZOOM_options_get (c->options, "pass");
1178
1179     ODR_MASK_SET(ireq->options, Z_Options_search);
1180     ODR_MASK_SET(ireq->options, Z_Options_present);
1181     ODR_MASK_SET(ireq->options, Z_Options_scan);
1182     ODR_MASK_SET(ireq->options, Z_Options_sort);
1183     ODR_MASK_SET(ireq->options, Z_Options_extendedServices);
1184     ODR_MASK_SET(ireq->options, Z_Options_namedResultSets);
1185
1186     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_1);
1187     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_2);
1188     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_3);
1189
1190     /* Index Data's Z39.50 Implementor Id is 81 */
1191     ireq->implementationId = odr_prepend(c->odr_out,
1192         ZOOM_options_get(c->options, "implementationId"),
1193         odr_prepend(c->odr_out, "81", ireq->implementationId));
1194
1195     ireq->implementationName = odr_prepend(c->odr_out,
1196         ZOOM_options_get(c->options, "implementationName"),
1197         odr_prepend(c->odr_out, "ZOOM-C", ireq->implementationName));
1198
1199     version = odr_strdup(c->odr_out, "$Revision: 1.80 $");
1200     if (strlen(version) > 10)   /* check for unexpanded CVS strings */
1201         version[strlen(version)-2] = '\0';
1202     ireq->implementationVersion = odr_prepend(c->odr_out,
1203         ZOOM_options_get(c->options, "implementationVersion"),
1204         odr_prepend(c->odr_out, &version[11], ireq->implementationVersion));
1205
1206     *ireq->maximumRecordSize =
1207         ZOOM_options_get_int (c->options, "maximumRecordSize", 1024*1024);
1208     *ireq->preferredMessageSize =
1209         ZOOM_options_get_int (c->options, "preferredMessageSize", 1024*1024);
1210
1211     if (auth_groupId || auth_password)
1212     {
1213         Z_IdPass *pass = (Z_IdPass *) odr_malloc(c->odr_out, sizeof(*pass));
1214         int i = 0;
1215         pass->groupId = 0;
1216         if (auth_groupId && *auth_groupId)
1217         {
1218             pass->groupId = (char *)
1219                 odr_malloc(c->odr_out, strlen(auth_groupId)+1);
1220             strcpy(pass->groupId, auth_groupId);
1221             i++;
1222         }
1223         pass->userId = 0;
1224         if (auth_userId && *auth_userId)
1225         {
1226             pass->userId = (char *)
1227                 odr_malloc(c->odr_out, strlen(auth_userId)+1);
1228             strcpy(pass->userId, auth_userId);
1229             i++;
1230         }
1231         pass->password = 0;
1232         if (auth_password && *auth_password)
1233         {
1234             pass->password = (char *)
1235                 odr_malloc(c->odr_out, strlen(auth_password)+1);
1236             strcpy(pass->password, auth_password);
1237             i++;
1238         }
1239         if (i)
1240         {
1241             auth->which = Z_IdAuthentication_idPass;
1242             auth->u.idPass = pass;
1243             ireq->idAuthentication = auth;
1244         }
1245     }
1246     else if (auth_userId)
1247     {
1248         auth->which = Z_IdAuthentication_open;
1249         auth->u.open = (char *)
1250             odr_malloc(c->odr_out, strlen(auth_userId)+1);
1251         strcpy(auth->u.open, auth_userId);
1252         ireq->idAuthentication = auth;
1253     }
1254     if (c->proxy)
1255         yaz_oi_set_string_oidval(&ireq->otherInfo, c->odr_out,
1256                                  VAL_PROXY, 1, c->host_port);
1257     if (c->charset || c->lang)
1258     {
1259         Z_OtherInformation **oi;
1260         Z_OtherInformationUnit *oi_unit;
1261
1262         yaz_oi_APDU(apdu, &oi);
1263
1264         if ((oi_unit = yaz_oi_update(oi, c->odr_out, NULL, 0, 0)))
1265         {
1266             ODR_MASK_SET(ireq->options, Z_Options_negotiationModel);
1267             oi_unit->which = Z_OtherInfo_externallyDefinedInfo;
1268             oi_unit->information.externallyDefinedInfo =
1269                 yaz_set_proposal_charneg_list(c->odr_out, " ",
1270                                               c->charset, c->lang, 1);
1271         }
1272     }
1273     assert (apdu);
1274     return send_APDU (c, apdu);
1275 }
1276
1277 #if HAVE_XML2
1278 static zoom_ret send_srw (ZOOM_connection c, Z_SRW_PDU *sr)
1279 {
1280     Z_GDU *gdu;
1281     ZOOM_Event event;
1282
1283     gdu = z_get_HTTP_Request_host_path(c->odr_out, c->host_port, c->path);
1284
1285     if (c->sru_mode == zoom_sru_get)
1286     {
1287         yaz_sru_get_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1288     }
1289     else if (c->sru_mode == zoom_sru_post)
1290     {
1291         yaz_sru_post_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1292     }
1293     else if (c->sru_mode == zoom_sru_soap)
1294     {
1295         yaz_sru_post_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1296     }
1297     if (!z_GDU(c->odr_out, &gdu, 0, 0))
1298         return zoom_complete;
1299     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1300
1301     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
1302     ZOOM_connection_put_event (c, event);
1303     odr_reset(c->odr_out);
1304     return do_write (c);
1305 }
1306 #endif
1307
1308 #if HAVE_XML2
1309 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1310 {
1311     int i;
1312     ZOOM_resultset resultset = 0;
1313     Z_SRW_PDU *sr = 0;
1314     const char *recordPacking = 0;
1315
1316     if (c->error)                  /* don't continue on error */
1317         return zoom_complete;
1318     assert (c->tasks);
1319     if (c->tasks->which == ZOOM_TASK_SEARCH)
1320     {
1321         resultset = c->tasks->u.search.resultset;
1322         resultset->setname = xstrdup ("default");
1323         ZOOM_options_set (resultset->options, "setname", resultset->setname);
1324     }
1325     else if(c->tasks->which == ZOOM_TASK_RETRIEVE)
1326     {
1327         resultset = c->tasks->u.retrieve.resultset;
1328
1329         resultset->start = c->tasks->u.retrieve.start;
1330         resultset->count = c->tasks->u.retrieve.count;
1331
1332         if (resultset->start >= resultset->size)
1333             return zoom_complete;
1334         if (resultset->start + resultset->count > resultset->size)
1335             resultset->count = resultset->size - resultset->start;
1336
1337         for (i = 0; i<resultset->count; i++)
1338         {
1339             ZOOM_record rec =
1340                 record_cache_lookup (resultset, i + resultset->start);
1341             if (!rec)
1342                 break;
1343             else
1344             {
1345                 ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
1346                 ZOOM_connection_put_event(c, event);
1347             }
1348         }
1349         resultset->start += i;
1350         resultset->count -= i;
1351
1352         if (resultset->count == 0)
1353             return zoom_complete;
1354     }
1355     assert(resultset->query);
1356
1357     sr = yaz_srw_get(c->odr_out, Z_SRW_searchRetrieve_request);
1358
1359     if (resultset->query->z_query->which == Z_Query_type_104
1360         && resultset->query->z_query->u.type_104->which == Z_External_CQL)
1361     {
1362
1363         sr->u.request->query_type = Z_SRW_query_type_cql;
1364         sr->u.request->query.cql =resultset->query->z_query->u.type_104->u.cql;
1365     }
1366     else if (resultset->query->z_query->which == Z_Query_type_1 &&
1367              resultset->query->z_query->u.type_1)
1368     {
1369         sr->u.request->query_type = Z_SRW_query_type_pqf;
1370         sr->u.request->query.pqf = resultset->query->query_string;
1371     }
1372     else
1373     {
1374         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
1375         return zoom_complete;
1376     }
1377     sr->u.request->startRecord = odr_intdup (c->odr_out, resultset->start + 1);
1378     sr->u.request->maximumRecords = odr_intdup (
1379         c->odr_out, resultset->step>0 ? resultset->step : resultset->count);
1380     sr->u.request->recordSchema = resultset->schema;
1381
1382     recordPacking = ZOOM_resultset_option_get (resultset, "recordPacking");
1383
1384     if (recordPacking)
1385         sr->u.request->recordPacking = odr_strdup(c->odr_out, recordPacking);
1386
1387     return send_srw(c, sr);
1388 }
1389 #else
1390 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1391 {
1392     return zoom_complete;
1393 }
1394 #endif
1395
1396 static zoom_ret ZOOM_connection_send_search (ZOOM_connection c)
1397 {
1398     ZOOM_resultset r;
1399     int lslb, ssub, mspn;
1400     const char *syntax;
1401     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_searchRequest);
1402     Z_SearchRequest *search_req = apdu->u.searchRequest;
1403     const char *elementSetName;
1404     const char *smallSetElementSetName;
1405     const char *mediumSetElementSetName;
1406
1407     assert (c->tasks);
1408     assert (c->tasks->which == ZOOM_TASK_SEARCH);
1409
1410     r = c->tasks->u.search.resultset;
1411
1412     yaz_log(log_details, "%p ZOOM_connection_send_search set=%p", c, r);
1413
1414     elementSetName =
1415         ZOOM_options_get (r->options, "elementSetName");
1416     smallSetElementSetName  =
1417         ZOOM_options_get (r->options, "smallSetElementSetName");
1418     mediumSetElementSetName =
1419         ZOOM_options_get (r->options, "mediumSetElementSetName");
1420
1421     if (!smallSetElementSetName)
1422         smallSetElementSetName = elementSetName;
1423
1424     if (!mediumSetElementSetName)
1425         mediumSetElementSetName = elementSetName;
1426
1427     assert (r);
1428     assert (r->query);
1429
1430     /* prepare query for the search request */
1431     search_req->query = r->query->z_query;
1432     if (!search_req->query)
1433     {
1434         set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
1435         return zoom_complete;
1436     }
1437
1438     search_req->databaseNames =
1439         set_DatabaseNames (c, r->options, &search_req->num_databaseNames);
1440
1441     /* get syntax (no need to provide unless piggyback is in effect) */
1442     syntax = ZOOM_options_get (r->options, "preferredRecordSyntax");
1443
1444     lslb = ZOOM_options_get_int (r->options, "largeSetLowerBound", -1);
1445     ssub = ZOOM_options_get_int (r->options, "smallSetUpperBound", -1);
1446     mspn = ZOOM_options_get_int (r->options, "mediumSetPresentNumber", -1);
1447     if (lslb != -1 && ssub != -1 && mspn != -1)
1448     {
1449         /* So're a Z39.50 expert? Let's hope you don't do sort */
1450         *search_req->largeSetLowerBound = lslb;
1451         *search_req->smallSetUpperBound = ssub;
1452         *search_req->mediumSetPresentNumber = mspn;
1453     }
1454     else if (r->start == 0 && r->count > 0
1455              && r->piggyback && !r->r_sort_spec && !r->schema)
1456     {
1457         /* Regular piggyback - do it unless we're going to do sort */
1458         *search_req->largeSetLowerBound = 2000000000;
1459         *search_req->smallSetUpperBound = 1;
1460         *search_req->mediumSetPresentNumber = r->step>0 ? r->step : r->count;
1461     }
1462     else
1463     {
1464         /* non-piggyback. Need not provide elementsets or syntaxes .. */
1465         smallSetElementSetName = 0;
1466         mediumSetElementSetName = 0;
1467         syntax = 0;
1468     }
1469     if (smallSetElementSetName && *smallSetElementSetName)
1470     {
1471         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1472             odr_malloc (c->odr_out, sizeof(*esn));
1473
1474         esn->which = Z_ElementSetNames_generic;
1475         esn->u.generic = odr_strdup (c->odr_out, smallSetElementSetName);
1476         search_req->smallSetElementSetNames = esn;
1477     }
1478     if (mediumSetElementSetName && *mediumSetElementSetName)
1479     {
1480         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1481             odr_malloc (c->odr_out, sizeof(*esn));
1482
1483         esn->which = Z_ElementSetNames_generic;
1484         esn->u.generic = odr_strdup (c->odr_out, mediumSetElementSetName);
1485         search_req->mediumSetElementSetNames = esn;
1486     }
1487     if (syntax)
1488         search_req->preferredRecordSyntax =
1489             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
1490
1491     if (!r->setname)
1492     {
1493         if (c->support_named_resultsets)
1494         {
1495             char setname[14];
1496             int ord;
1497             /* find the lowest unused ordinal so that we re-use
1498                result sets on the server. */
1499             for (ord = 1; ; ord++)
1500             {
1501                 ZOOM_resultset rp;
1502                 sprintf (setname, "%d", ord);
1503                 for (rp = c->resultsets; rp; rp = rp->next)
1504                     if (rp->setname && !strcmp (rp->setname, setname))
1505                         break;
1506                 if (!rp)
1507                     break;
1508             }
1509             r->setname = xstrdup (setname);
1510             yaz_log(log_details, "%p ZOOM_connection_send_search: allocating "
1511                     "set %s", c, r->setname);
1512         }
1513         else
1514         {
1515             yaz_log(log_details, "%p ZOOM_connection_send_search: using "
1516                     "default set", c);
1517             r->setname = xstrdup ("default");
1518         }
1519         ZOOM_options_set (r->options, "setname", r->setname);
1520     }
1521     search_req->resultSetName = odr_strdup(c->odr_out, r->setname);
1522     return send_APDU (c, apdu);
1523 }
1524
1525 static void response_default_diag(ZOOM_connection c, Z_DefaultDiagFormat *r)
1526 {
1527     int oclass;
1528     char *addinfo = 0;
1529
1530     switch (r->which)
1531     {
1532     case Z_DefaultDiagFormat_v2Addinfo:
1533         addinfo = r->u.v2Addinfo;
1534         break;
1535     case Z_DefaultDiagFormat_v3Addinfo:
1536         addinfo = r->u.v3Addinfo;
1537         break;
1538     }
1539     xfree (c->addinfo);
1540     c->addinfo = 0;
1541     set_dset_error(c, *r->condition,
1542                    yaz_z3950oid_to_str(r->diagnosticSetId, &oclass),
1543                    addinfo, 0);
1544 }
1545
1546 static void response_diag(ZOOM_connection c, Z_DiagRec *p)
1547 {
1548     if (p->which != Z_DiagRec_defaultFormat)
1549         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1550     else
1551         response_default_diag(c, p->u.defaultFormat);
1552 }
1553
1554 ZOOM_API(ZOOM_record)
1555 ZOOM_record_clone (ZOOM_record srec)
1556 {
1557     char *buf;
1558     int size;
1559     ODR odr_enc;
1560     ZOOM_record nrec;
1561
1562     odr_enc = odr_createmem(ODR_ENCODE);
1563     if (!z_NamePlusRecord (odr_enc, &srec->npr, 0, 0))
1564         return 0;
1565     buf = odr_getbuf (odr_enc, &size, 0);
1566
1567     nrec = (ZOOM_record) xmalloc (sizeof(*nrec));
1568     nrec->odr = odr_createmem(ODR_DECODE);
1569     nrec->wrbuf_marc = 0;
1570     nrec->wrbuf_iconv = 0;
1571     nrec->wrbuf_opac = 0;
1572     odr_setbuf (nrec->odr, buf, size, 0);
1573     z_NamePlusRecord (nrec->odr, &nrec->npr, 0, 0);
1574
1575     odr_destroy (odr_enc);
1576     return nrec;
1577 }
1578
1579 ZOOM_API(ZOOM_record)
1580 ZOOM_resultset_record_immediate (ZOOM_resultset s,size_t pos)
1581 {
1582     return record_cache_lookup (s, pos);
1583 }
1584
1585 ZOOM_API(ZOOM_record)
1586 ZOOM_resultset_record (ZOOM_resultset r, size_t pos)
1587 {
1588     ZOOM_record rec = ZOOM_resultset_record_immediate(r, pos);
1589
1590     if (!rec)
1591     {
1592         /*
1593          * MIKE: I think force_sync should always be zero, but I don't
1594          * want to make this change until I get the go-ahead from
1595          * Adam, in case something depends on the old synchronous
1596          * behaviour.
1597          */
1598         int force_sync = 1;
1599         if (getenv("ZOOM_RECORD_NO_FORCE_SYNC")) force_sync = 0;
1600         ZOOM_resultset_retrieve (r, force_sync, pos, 1);
1601         rec = ZOOM_resultset_record_immediate (r, pos);
1602     }
1603     return rec;
1604 }
1605
1606 ZOOM_API(void)
1607 ZOOM_record_destroy (ZOOM_record rec)
1608 {
1609     if (!rec)
1610         return;
1611     if (rec->wrbuf_marc)
1612         wrbuf_free (rec->wrbuf_marc, 1);
1613     if (rec->wrbuf_iconv)
1614         wrbuf_free (rec->wrbuf_iconv, 1);
1615     if (rec->wrbuf_opac)
1616         wrbuf_free (rec->wrbuf_opac, 1);
1617     odr_destroy (rec->odr);
1618     xfree (rec);
1619 }
1620
1621 static const char *marc_iconv_return(ZOOM_record rec, int marc_type,
1622                                      int *len,
1623                                      const char *buf, int sz,
1624                                      const char *record_charset)
1625 {
1626     char to[40];
1627     char from[40];
1628     yaz_iconv_t cd = 0;
1629     yaz_marc_t mt = yaz_marc_create();
1630
1631     *from = '\0';
1632     strcpy(to, "UTF-8");
1633     if (record_charset && *record_charset)
1634     {
1635         /* Use "from,to" or just "from" */
1636         const char *cp = strchr(record_charset, ',');
1637         int clen = strlen(record_charset);
1638         if (cp && cp[1])
1639         {
1640             strncpy( to, cp+1, sizeof(to)-1);
1641             to[sizeof(to)-1] = '\0';
1642             clen = cp - record_charset;
1643         }
1644         if (clen > sizeof(from)-1)
1645             clen = sizeof(from)-1;
1646
1647         if (clen)
1648             strncpy(from, record_charset, clen);
1649         from[clen] = '\0';
1650     }
1651
1652     if (*from && *to)
1653     {
1654         cd = yaz_iconv_open(to, from);
1655         yaz_marc_iconv(mt, cd);
1656     }
1657
1658     yaz_marc_xml(mt, marc_type);
1659     if (!rec->wrbuf_marc)
1660         rec->wrbuf_marc = wrbuf_alloc();
1661     wrbuf_rewind (rec->wrbuf_marc);
1662     if (yaz_marc_decode_wrbuf (mt, buf, sz, rec->wrbuf_marc) > 0)
1663     {
1664         yaz_marc_destroy(mt);
1665         if (cd)
1666             yaz_iconv_close(cd);
1667         if (len)
1668             *len = wrbuf_len(rec->wrbuf_marc);
1669         return wrbuf_buf(rec->wrbuf_marc);
1670     }
1671     yaz_marc_destroy(mt);
1672     if (cd)
1673         yaz_iconv_close(cd);
1674     return 0;
1675 }
1676
1677 static const char *record_iconv_return(ZOOM_record rec, int *len,
1678                                        const char *buf, int sz,
1679                                        const char *record_charset)
1680 {
1681     char to[40];
1682     char from[40];
1683     yaz_iconv_t cd = 0;
1684
1685     *from = '\0';
1686     strcpy(to, "UTF-8");
1687     if (record_charset && *record_charset)
1688     {
1689         /* Use "from,to" or just "from" */
1690         const char *cp = strchr(record_charset, ',');
1691         int clen = strlen(record_charset);
1692         if (cp && cp[1])
1693         {
1694             strncpy( to, cp+1, sizeof(to)-1);
1695             to[sizeof(to)-1] = '\0';
1696             clen = cp - record_charset;
1697         }
1698         if (clen > sizeof(from)-1)
1699             clen = sizeof(from)-1;
1700
1701         if (clen)
1702             strncpy(from, record_charset, clen);
1703         from[clen] = '\0';
1704     }
1705
1706     if (*from && *to && (cd = yaz_iconv_open(to, from)))
1707     {
1708         char outbuf[12];
1709         size_t inbytesleft = sz;
1710         const char *inp = buf;
1711
1712         if (!rec->wrbuf_iconv)
1713             rec->wrbuf_iconv = wrbuf_alloc();
1714
1715         wrbuf_rewind(rec->wrbuf_iconv);
1716
1717         while (inbytesleft)
1718         {
1719             size_t outbytesleft = sizeof(outbuf);
1720             char *outp = outbuf;
1721             size_t r = yaz_iconv (cd, (char**) &inp,
1722                                   &inbytesleft,
1723                                   &outp, &outbytesleft);
1724             if (r == (size_t) (-1))
1725             {
1726                 int e = yaz_iconv_error(cd);
1727                 if (e != YAZ_ICONV_E2BIG)
1728                     break;
1729             }
1730             wrbuf_write(rec->wrbuf_iconv, outbuf, outp - outbuf);
1731         }
1732         wrbuf_puts(rec->wrbuf_iconv, "");
1733         buf = wrbuf_buf(rec->wrbuf_iconv);
1734         sz = wrbuf_len(rec->wrbuf_iconv);
1735         yaz_iconv_close(cd);
1736     }
1737     if (len)
1738         *len = sz;
1739     return buf;
1740 }
1741
1742 ZOOM_API(const char *)
1743 ZOOM_record_get (ZOOM_record rec, const char *type_spec, int *len)
1744 {
1745     char type[40];
1746     char charset[40];
1747     char xpath[512];
1748     const char *cp;
1749     int i;
1750     Z_NamePlusRecord *npr;
1751
1752     if (len)
1753         *len = 0; /* default return */
1754
1755     if (!rec)
1756         return 0;
1757     npr = rec->npr;
1758     if (!npr)
1759         return 0;
1760
1761     cp = type_spec;
1762     for (i = 0; cp[i] && i < sizeof(type)-1; i++)
1763     {
1764         if (cp[i] == ';' || cp[i] == ' ')
1765             break;
1766         type[i] = cp[i];
1767     }
1768     type[i] = '\0';
1769     charset[0] = '\0';
1770     while (type_spec[i] == ';')
1771     {
1772         i++;
1773         while (type_spec[i] == ' ')
1774             i++;
1775         if (!strncmp(type_spec+i, "charset=", 8))
1776         {
1777             int j = 0;
1778             i = i + 8; /* skip charset= */
1779             for (j = 0; type_spec[i]  && j < sizeof(charset)-1; i++, j++)
1780             {
1781                 if (type_spec[i] == ';' || type_spec[i] == ' ')
1782                     break;
1783                 charset[j] = cp[i];
1784             }
1785             charset[j] = '\0';
1786         }
1787         else if (!strncmp(type_spec+i, "xpath=", 6))
1788         {
1789             int j = 0;
1790             i = i + 6;
1791             for (j = 0; type_spec[i] && j < sizeof(xpath)-1; i++, j++)
1792                 xpath[j] = cp[i];
1793             xpath[j] = '\0';
1794         }
1795         while (type_spec[i] == ' ')
1796             i++;
1797     }
1798     if (!strcmp (type, "database"))
1799     {
1800         if (len)
1801             *len = (npr->databaseName ? strlen(npr->databaseName) : 0);
1802         return npr->databaseName;
1803     }
1804     else if (!strcmp (type, "syntax"))
1805     {
1806         const char *desc = 0;
1807         if (npr->which == Z_NamePlusRecord_databaseRecord)
1808         {
1809             Z_External *r = (Z_External *) npr->u.databaseRecord;
1810             oident *ent = oid_getentbyoid(r->direct_reference);
1811             if (ent)
1812                 desc = ent->desc;
1813         }
1814         if (!desc)
1815             desc = "none";
1816         if (len)
1817             *len = strlen(desc);
1818         return desc;
1819     }
1820     if (npr->which != Z_NamePlusRecord_databaseRecord)
1821         return 0;
1822
1823     /* from now on - we have a database record .. */
1824     if (!strcmp (type, "render"))
1825     {
1826         Z_External *r = (Z_External *) npr->u.databaseRecord;
1827         oident *ent = oid_getentbyoid(r->direct_reference);
1828
1829         /* render bibliographic record .. */
1830         if (r->which == Z_External_OPAC)
1831         {
1832             r = r->u.opac->bibliographicRecord;
1833             if (!r)
1834                 return 0;
1835             ent = oid_getentbyoid(r->direct_reference);
1836         }
1837         if (r->which == Z_External_sutrs)
1838             return record_iconv_return(rec, len,
1839                                        (char*) r->u.sutrs->buf,
1840                                        r->u.sutrs->len,
1841                                        charset);
1842         else if (r->which == Z_External_octet)
1843         {
1844             const char *ret_buf;
1845             switch (ent->value)
1846             {
1847             case VAL_SOIF:
1848             case VAL_HTML:
1849             case VAL_SUTRS:
1850                 break;
1851             case VAL_TEXT_XML:
1852             case VAL_APPLICATION_XML:
1853                 break;
1854             default:
1855                 ret_buf = marc_iconv_return(
1856                     rec, YAZ_MARC_LINE, len,
1857                     (const char *) r->u.octet_aligned->buf,
1858                     r->u.octet_aligned->len,
1859                     charset);
1860                 if (ret_buf)
1861                     return ret_buf;
1862             }
1863             return record_iconv_return(rec, len,
1864                                        (const char *) r->u.octet_aligned->buf,
1865                                        r->u.octet_aligned->len,
1866                                        charset);
1867         }
1868         else if (r->which == Z_External_grs1)
1869         {
1870             if (!rec->wrbuf_marc)
1871                 rec->wrbuf_marc = wrbuf_alloc();
1872             wrbuf_rewind (rec->wrbuf_marc);
1873             yaz_display_grs1(rec->wrbuf_marc, r->u.grs1, 0);
1874             return record_iconv_return(rec, len,
1875                                        wrbuf_buf(rec->wrbuf_marc),
1876                                        wrbuf_len(rec->wrbuf_marc),
1877                                        charset);
1878         }
1879         return 0;
1880     }
1881     else if (!strcmp (type, "xml"))
1882     {
1883         Z_External *r = (Z_External *) npr->u.databaseRecord;
1884         oident *ent = oid_getentbyoid(r->direct_reference);
1885
1886         /* render bibliographic record .. */
1887         if (r->which == Z_External_OPAC)
1888         {
1889             r = r->u.opac->bibliographicRecord;
1890             if (!r)
1891                 return 0;
1892             ent = oid_getentbyoid(r->direct_reference);
1893         }
1894
1895         if (r->which == Z_External_sutrs)
1896             return record_iconv_return(rec, len,
1897                                        (const char *) r->u.sutrs->buf,
1898                                        r->u.sutrs->len,
1899                                        charset);
1900         else if (r->which == Z_External_octet)
1901         {
1902             const char *ret_buf;
1903             int marc_decode_type = YAZ_MARC_MARCXML;
1904
1905             switch (ent->value)
1906             {
1907             case VAL_SOIF:
1908             case VAL_HTML:
1909             case VAL_SUTRS:
1910                 break;
1911             case VAL_TEXT_XML:
1912             case VAL_APPLICATION_XML:
1913                 break;
1914             default:
1915                 ret_buf = marc_iconv_return(
1916                     rec, marc_decode_type, len,
1917                     (const char *) r->u.octet_aligned->buf,
1918                     r->u.octet_aligned->len,
1919                     charset);
1920                 if (ret_buf)
1921                     return ret_buf;
1922             }
1923             return record_iconv_return(rec, len,
1924                                        (const char *) r->u.octet_aligned->buf,
1925                                        r->u.octet_aligned->len,
1926                                        charset);
1927         }
1928         else if (r->which == Z_External_grs1)
1929         {
1930             if (len) *len = 5;
1931             return "GRS-1";
1932         }
1933         return 0;
1934     }
1935     else if (!strcmp (type, "raw"))
1936     {
1937         Z_External *r = (Z_External *) npr->u.databaseRecord;
1938
1939         if (r->which == Z_External_sutrs)
1940         {
1941             if (len) *len = r->u.sutrs->len;
1942             return (const char *) r->u.sutrs->buf;
1943         }
1944         else if (r->which == Z_External_octet)
1945         {
1946             if (len) *len = r->u.octet_aligned->len;
1947             return (const char *) r->u.octet_aligned->buf;
1948         }
1949         else /* grs-1, explain, OPAC, ... */
1950         {
1951             if (len) *len = -1;
1952             return (const char *) npr->u.databaseRecord;
1953         }
1954         return 0;
1955     }
1956     else if (!strcmp (type, "ext"))
1957     {
1958         if (len) *len = -1;
1959         return (const char *) npr->u.databaseRecord;
1960     }
1961     else if (!strcmp (type, "opac"))
1962
1963     {
1964         Z_External *r = (Z_External *) npr->u.databaseRecord;
1965         if (r->which == Z_External_OPAC)
1966         {
1967             if (!rec->wrbuf_opac)
1968                 rec->wrbuf_opac = wrbuf_alloc();
1969             wrbuf_rewind (rec->wrbuf_opac);
1970             yaz_display_OPAC(rec->wrbuf_opac, r->u.opac, 0);
1971             return record_iconv_return(rec, len,
1972                                        wrbuf_buf(rec->wrbuf_opac),
1973                                        wrbuf_len(rec->wrbuf_opac),
1974                                        charset);
1975         }
1976     }
1977     return 0;
1978 }
1979
1980 static int strcmp_null(const char *v1, const char *v2)
1981 {
1982     if (!v1 && !v2)
1983         return 0;
1984     if (!v1 || !v2)
1985         return -1;
1986     return strcmp(v1, v2);
1987 }
1988
1989 static size_t record_hash(int pos)
1990 {
1991     if (pos < 0)
1992         pos = 0;
1993     return pos % RECORD_HASH_SIZE;
1994 }
1995
1996 static void record_cache_add (ZOOM_resultset r, Z_NamePlusRecord *npr,
1997                               int pos)
1998 {
1999     ZOOM_record_cache rc;
2000     const char *elementSetName =
2001         ZOOM_resultset_option_get (r, "elementSetName");
2002     const char *syntax =
2003         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
2004
2005     ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
2006     ZOOM_connection_put_event(r->connection, event);
2007
2008     for (rc = r->record_hash[record_hash(pos)]; rc; rc = rc->next)
2009     {
2010         if (pos == rc->pos)
2011         {
2012             if (strcmp_null(r->schema, rc->schema))
2013                 continue;
2014             if (strcmp_null(elementSetName,rc->elementSetName))
2015                 continue;
2016             if (strcmp_null(syntax, rc->syntax))
2017                 continue;
2018             /* not destroying rc->npr (it's handled by nmem )*/
2019             rc->rec.npr = npr;
2020             /* keeping wrbuf_marc too */
2021             return;
2022         }
2023     }
2024     rc = (ZOOM_record_cache) odr_malloc (r->odr, sizeof(*rc));
2025     rc->rec.npr = npr;
2026     rc->rec.odr = 0;
2027     rc->rec.wrbuf_marc = 0;
2028     rc->rec.wrbuf_iconv = 0;
2029     rc->rec.wrbuf_opac = 0;
2030     if (elementSetName)
2031         rc->elementSetName = odr_strdup (r->odr, elementSetName);
2032     else
2033         rc->elementSetName = 0;
2034
2035     if (syntax)
2036         rc->syntax = odr_strdup (r->odr, syntax);
2037     else
2038         rc->syntax = 0;
2039
2040     if (r->schema)
2041         rc->schema = odr_strdup (r->odr, r->schema);
2042     else
2043         rc->schema = 0;
2044
2045     rc->pos = pos;
2046     rc->next = r->record_hash[record_hash(pos)];
2047     r->record_hash[record_hash(pos)] = rc;
2048 }
2049
2050 static ZOOM_record record_cache_lookup (ZOOM_resultset r, int pos)
2051 {
2052     ZOOM_record_cache rc;
2053     const char *elementSetName =
2054         ZOOM_resultset_option_get (r, "elementSetName");
2055     const char *syntax =
2056         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
2057
2058     for (rc = r->record_hash[record_hash(pos)]; rc; rc = rc->next)
2059     {
2060         if (pos == rc->pos)
2061         {
2062             if (strcmp_null(r->schema, rc->schema))
2063                 continue;
2064             if (strcmp_null(elementSetName,rc->elementSetName))
2065                 continue;
2066             if (strcmp_null(syntax, rc->syntax))
2067                 continue;
2068             return &rc->rec;
2069         }
2070     }
2071     return 0;
2072 }
2073
2074 static void handle_records (ZOOM_connection c, Z_Records *sr,
2075                             int present_phase)
2076 {
2077     ZOOM_resultset resultset;
2078
2079     if (!c->tasks)
2080         return ;
2081     switch (c->tasks->which)
2082     {
2083     case ZOOM_TASK_SEARCH:
2084         resultset = c->tasks->u.search.resultset;
2085         break;
2086     case ZOOM_TASK_RETRIEVE:
2087         resultset = c->tasks->u.retrieve.resultset;
2088         break;
2089     default:
2090         return;
2091     }
2092     if (sr && sr->which == Z_Records_NSD)
2093         response_default_diag(c, sr->u.nonSurrogateDiagnostic);
2094     else if (sr && sr->which == Z_Records_multipleNSD)
2095     {
2096         if (sr->u.multipleNonSurDiagnostics->num_diagRecs >= 1)
2097             response_diag(c, sr->u.multipleNonSurDiagnostics->diagRecs[0]);
2098         else
2099             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2100     }
2101     else
2102     {
2103         if (resultset->count + resultset->start > resultset->size)
2104             resultset->count = resultset->size - resultset->start;
2105         if (resultset->count < 0)
2106             resultset->count = 0;
2107         if (sr && sr->which == Z_Records_DBOSD)
2108         {
2109             int i;
2110             NMEM nmem = odr_extract_mem (c->odr_in);
2111             Z_NamePlusRecordList *p =
2112                 sr->u.databaseOrSurDiagnostics;
2113             for (i = 0; i<p->num_records; i++)
2114             {
2115                 record_cache_add (resultset, p->records[i],
2116                                   i+ resultset->start);
2117             }
2118             resultset->count -= i;
2119             resultset->start += i;
2120             /* transfer our response to search_nmem .. we need it later */
2121             nmem_transfer (resultset->odr->mem, nmem);
2122             nmem_destroy (nmem);
2123             if (present_phase && p->num_records == 0)
2124             {
2125                 /* present response and we didn't get any records! */
2126                 Z_NamePlusRecord *myrec =
2127                     zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2128                 record_cache_add(resultset, myrec, resultset->start);
2129             }
2130         }
2131         else if (present_phase)
2132         {
2133             /* present response and we didn't get any records! */
2134             Z_NamePlusRecord *myrec =
2135                 zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2136             record_cache_add(resultset, myrec, resultset->start);
2137         }
2138     }
2139 }
2140
2141 static void handle_present_response (ZOOM_connection c, Z_PresentResponse *pr)
2142 {
2143     handle_records (c, pr->records, 1);
2144 }
2145
2146 static void handle_queryExpressionTerm(ZOOM_options opt, const char *name,
2147                                        Z_Term *term)
2148 {
2149     switch (term->which)
2150     {
2151     case Z_Term_general:
2152         ZOOM_options_setl(opt, name,
2153                           (const char *)(term->u.general->buf),
2154                           term->u.general->len);
2155         break;
2156     case Z_Term_characterString:
2157         ZOOM_options_set(opt, name, term->u.characterString);
2158         break;
2159     case Z_Term_numeric:
2160         ZOOM_options_set_int(opt, name, *term->u.numeric);
2161         break;
2162     }
2163 }
2164
2165 static void handle_queryExpression(ZOOM_options opt, const char *name,
2166                                    Z_QueryExpression *exp)
2167 {
2168     char opt_name[80];
2169
2170     switch (exp->which)
2171     {
2172     case Z_QueryExpression_term:
2173         if (exp->u.term && exp->u.term->queryTerm)
2174         {
2175             sprintf(opt_name, "%s.term", name);
2176             handle_queryExpressionTerm(opt, opt_name, exp->u.term->queryTerm);
2177         }
2178         break;
2179     case Z_QueryExpression_query:
2180         break;
2181     }
2182 }
2183
2184 static void handle_searchResult(ZOOM_connection c, ZOOM_resultset resultset,
2185                                 Z_OtherInformation *o)
2186 {
2187     int i;
2188     for (i = 0; o && i < o->num_elements; i++)
2189     {
2190         if (o->list[i]->which == Z_OtherInfo_externallyDefinedInfo)
2191         {
2192             Z_External *ext = o->list[i]->information.externallyDefinedInfo;
2193
2194             if (ext->which == Z_External_searchResult1)
2195             {
2196                 int j;
2197                 Z_SearchInfoReport *sr = ext->u.searchResult1;
2198
2199                 if (sr->num)
2200                     ZOOM_options_set_int(
2201                         resultset->options, "searchresult.size", sr->num);
2202
2203                 for (j = 0; j < sr->num; j++)
2204                 {
2205                     Z_SearchInfoReport_s *ent =
2206                         ext->u.searchResult1->elements[j];
2207                     char pref[80];
2208
2209                     sprintf(pref, "searchresult.%d", j);
2210
2211                     if (ent->subqueryId)
2212                     {
2213                         char opt_name[80];
2214                         sprintf(opt_name, "%s.id", pref);
2215                         ZOOM_options_set(resultset->options, opt_name,
2216                                          ent->subqueryId);
2217                     }
2218                     if (ent->subqueryExpression)
2219                     {
2220                         char opt_name[80];
2221                         sprintf(opt_name, "%s.subquery", pref);
2222                         handle_queryExpression(resultset->options, opt_name,
2223                                                ent->subqueryExpression);
2224                     }
2225                     if (ent->subqueryInterpretation)
2226                     {
2227                         char opt_name[80];
2228                         sprintf(opt_name, "%s.interpretation", pref);
2229                         handle_queryExpression(resultset->options, opt_name,
2230                                                ent->subqueryInterpretation);
2231                     }
2232                     if (ent->subqueryRecommendation)
2233                     {
2234                         char opt_name[80];
2235                         sprintf(opt_name, "%s.recommendation", pref);
2236                         handle_queryExpression(resultset->options, opt_name,
2237                                                ent->subqueryRecommendation);
2238                     }
2239                     if (ent->subqueryCount)
2240                     {
2241                         char opt_name[80];
2242                         sprintf(opt_name, "%s.count", pref);
2243                         ZOOM_options_set_int(resultset->options, opt_name,
2244                                              *ent->subqueryCount);
2245                     }
2246                 }
2247             }
2248         }
2249     }
2250 }
2251
2252 static void handle_search_response (ZOOM_connection c, Z_SearchResponse *sr)
2253 {
2254     ZOOM_resultset resultset;
2255     ZOOM_Event event;
2256
2257     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
2258         return ;
2259
2260     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
2261     ZOOM_connection_put_event(c, event);
2262
2263     resultset = c->tasks->u.search.resultset;
2264
2265     handle_searchResult(c, resultset, sr->additionalSearchInfo);
2266
2267     resultset->size = *sr->resultCount;
2268     handle_records (c, sr->records, 0);
2269 }
2270
2271 static void sort_response (ZOOM_connection c, Z_SortResponse *res)
2272 {
2273     if (res->diagnostics && res->num_diagnostics > 0)
2274         response_diag (c, res->diagnostics[0]);
2275 }
2276
2277 static int scan_response (ZOOM_connection c, Z_ScanResponse *res)
2278 {
2279     NMEM nmem = odr_extract_mem (c->odr_in);
2280     ZOOM_scanset scan;
2281
2282     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
2283         return 0;
2284     scan = c->tasks->u.scan.scan;
2285
2286     if (res->entries && res->entries->nonsurrogateDiagnostics)
2287         response_diag(c, res->entries->nonsurrogateDiagnostics[0]);
2288     scan->scan_response = res;
2289     nmem_transfer (scan->odr->mem, nmem);
2290     if (res->stepSize)
2291         ZOOM_options_set_int (scan->options, "stepSize", *res->stepSize);
2292     if (res->positionOfTerm)
2293         ZOOM_options_set_int (scan->options, "position", *res->positionOfTerm);
2294     if (res->scanStatus)
2295         ZOOM_options_set_int (scan->options, "scanStatus", *res->scanStatus);
2296     if (res->numberOfEntriesReturned)
2297         ZOOM_options_set_int (scan->options, "number",
2298                               *res->numberOfEntriesReturned);
2299     nmem_destroy (nmem);
2300     return 1;
2301 }
2302
2303 static zoom_ret send_sort (ZOOM_connection c,
2304                            ZOOM_resultset resultset)
2305 {
2306     if (c->error)
2307         resultset->r_sort_spec = 0;
2308     if (resultset->r_sort_spec)
2309     {
2310         Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_sortRequest);
2311         Z_SortRequest *req = apdu->u.sortRequest;
2312
2313         req->num_inputResultSetNames = 1;
2314         req->inputResultSetNames = (Z_InternationalString **)
2315             odr_malloc (c->odr_out, sizeof(*req->inputResultSetNames));
2316         req->inputResultSetNames[0] =
2317             odr_strdup (c->odr_out, resultset->setname);
2318         req->sortedResultSetName = odr_strdup (c->odr_out, resultset->setname);
2319         req->sortSequence = resultset->r_sort_spec;
2320         resultset->r_sort_spec = 0;
2321         return send_APDU (c, apdu);
2322     }
2323     return zoom_complete;
2324 }
2325
2326 static zoom_ret send_present(ZOOM_connection c)
2327 {
2328     Z_APDU *apdu = 0;
2329     Z_PresentRequest *req = 0;
2330     int i = 0;
2331     const char *syntax = 0;
2332     const char *elementSetName = 0;
2333     ZOOM_resultset  resultset;
2334
2335     if (!c->tasks)
2336     {
2337         yaz_log(log_details, "%p send_present no tasks", c);
2338         return zoom_complete;
2339     }
2340
2341     switch (c->tasks->which)
2342     {
2343     case ZOOM_TASK_SEARCH:
2344         resultset = c->tasks->u.search.resultset;
2345         break;
2346     case ZOOM_TASK_RETRIEVE:
2347         resultset = c->tasks->u.retrieve.resultset;
2348         resultset->start = c->tasks->u.retrieve.start;
2349         resultset->count = c->tasks->u.retrieve.count;
2350
2351         if (resultset->start >= resultset->size)
2352         {
2353             yaz_log(log_details, "%p send_present start=%d >= size=%d",
2354                     c, resultset->start, resultset->size);
2355             return zoom_complete;
2356         }
2357         if (resultset->start + resultset->count > resultset->size)
2358             resultset->count = resultset->size - resultset->start;
2359         break;
2360     default:
2361         return zoom_complete;
2362     }
2363     yaz_log(log_details, "%p send_present start=%d count=%d",
2364             c, resultset->start, resultset->count);
2365
2366     syntax = ZOOM_resultset_option_get (resultset, "preferredRecordSyntax");
2367     elementSetName = ZOOM_resultset_option_get (resultset, "elementSetName");
2368
2369     if (c->error)                  /* don't continue on error */
2370         return zoom_complete;
2371     if (resultset->start < 0)
2372         return zoom_complete;
2373     for (i = 0; i<resultset->count; i++)
2374     {
2375         ZOOM_record rec =
2376             record_cache_lookup (resultset, i + resultset->start);
2377         if (!rec)
2378             break;
2379         else
2380         {
2381             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
2382             ZOOM_connection_put_event(c, event);
2383         }
2384     }
2385     resultset->start += i;
2386     resultset->count -= i;
2387
2388     if (resultset->count == 0)
2389     {
2390         yaz_log(log_details, "%p send_present skip=%d no more to fetch", c, i);
2391         return zoom_complete;
2392     }
2393
2394     apdu = zget_APDU(c->odr_out, Z_APDU_presentRequest);
2395     req = apdu->u.presentRequest;
2396
2397     if (i)
2398         yaz_log(log_details, "%p send_present skip=%d", c, i);
2399
2400     *req->resultSetStartPoint = resultset->start + 1;
2401     *req->numberOfRecordsRequested = resultset->step>0 ?
2402         resultset->step : resultset->count;
2403     if (*req->numberOfRecordsRequested + resultset->start > resultset->size)
2404         *req->numberOfRecordsRequested = resultset->size -  resultset->start;
2405     assert (*req->numberOfRecordsRequested > 0);
2406
2407     if (syntax && *syntax)
2408         req->preferredRecordSyntax =
2409             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
2410
2411     if (resultset->schema && *resultset->schema)
2412     {
2413         Z_RecordComposition *compo = (Z_RecordComposition *)
2414             odr_malloc (c->odr_out, sizeof(*compo));
2415
2416         req->recordComposition = compo;
2417         compo->which = Z_RecordComp_complex;
2418         compo->u.complex = (Z_CompSpec *)
2419             odr_malloc(c->odr_out, sizeof(*compo->u.complex));
2420         compo->u.complex->selectAlternativeSyntax = (bool_t *)
2421             odr_malloc(c->odr_out, sizeof(bool_t));
2422         *compo->u.complex->selectAlternativeSyntax = 0;
2423
2424         compo->u.complex->generic = (Z_Specification *)
2425             odr_malloc(c->odr_out, sizeof(*compo->u.complex->generic));
2426
2427         compo->u.complex->generic->which = Z_Schema_oid;
2428         compo->u.complex->generic->schema.oid = (Odr_oid *)
2429             yaz_str_to_z3950oid (c->odr_out, CLASS_SCHEMA, resultset->schema);
2430
2431         if (!compo->u.complex->generic->schema.oid)
2432         {
2433             /* OID wasn't a schema! Try record syntax instead. */
2434
2435             compo->u.complex->generic->schema.oid = (Odr_oid *)
2436                 yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, resultset->schema);
2437         }
2438         if (elementSetName && *elementSetName)
2439         {
2440             compo->u.complex->generic->elementSpec = (Z_ElementSpec *)
2441                 odr_malloc(c->odr_out, sizeof(Z_ElementSpec));
2442             compo->u.complex->generic->elementSpec->which =
2443                 Z_ElementSpec_elementSetName;
2444             compo->u.complex->generic->elementSpec->u.elementSetName =
2445                 odr_strdup (c->odr_out, elementSetName);
2446         }
2447         else
2448             compo->u.complex->generic->elementSpec = 0;
2449         compo->u.complex->num_dbSpecific = 0;
2450         compo->u.complex->dbSpecific = 0;
2451         compo->u.complex->num_recordSyntax = 0;
2452         compo->u.complex->recordSyntax = 0;
2453     }
2454     else if (elementSetName && *elementSetName)
2455     {
2456         Z_ElementSetNames *esn = (Z_ElementSetNames *)
2457             odr_malloc (c->odr_out, sizeof(*esn));
2458         Z_RecordComposition *compo = (Z_RecordComposition *)
2459             odr_malloc (c->odr_out, sizeof(*compo));
2460
2461         esn->which = Z_ElementSetNames_generic;
2462         esn->u.generic = odr_strdup (c->odr_out, elementSetName);
2463         compo->which = Z_RecordComp_simple;
2464         compo->u.simple = esn;
2465         req->recordComposition = compo;
2466     }
2467     req->resultSetId = odr_strdup(c->odr_out, resultset->setname);
2468     return send_APDU (c, apdu);
2469 }
2470
2471 ZOOM_API(ZOOM_scanset)
2472 ZOOM_connection_scan (ZOOM_connection c, const char *start)
2473 {
2474     ZOOM_scanset s;
2475     ZOOM_query q = ZOOM_query_create();
2476
2477     ZOOM_query_prefix (q, start);
2478
2479     s = ZOOM_connection_scan1(c, q);
2480     ZOOM_query_destroy (q);
2481     return s;
2482
2483 }
2484
2485 ZOOM_API(ZOOM_scanset)
2486 ZOOM_connection_scan1 (ZOOM_connection c, ZOOM_query q)
2487 {
2488     ZOOM_scanset scan = (ZOOM_scanset) xmalloc (sizeof(*scan));
2489     char *start;
2490     char *freeme = 0;
2491
2492     scan->connection = c;
2493     scan->odr = odr_createmem (ODR_DECODE);
2494     scan->options = ZOOM_options_create_with_parent (c->options);
2495     scan->refcount = 1;
2496     scan->scan_response = 0;
2497
2498     /*
2499      * We need to check the query-type, so we can recognise CQL and
2500      * CCL and compile them into a form that we can use here.  The
2501      * ZOOM_query structure has no explicit `type' member, but
2502      * inspection of the ZOOM_query_prefix() and ZOOM_query_cql()
2503      * functions shows how the structure is set up in each case.
2504      */
2505     if (q->z_query->which == Z_Query_type_1) {
2506         yaz_log(log_api, "%p ZOOM_connection_scan1 q=%p PQF '%s'",
2507                 c, q, q->query_string);
2508         start = q->query_string;
2509     } else if (q->z_query->which == Z_Query_type_104) {
2510         yaz_log(log_api, "%p ZOOM_connection_scan1 q=%p CQL '%s'",
2511                 c, q, q->query_string);
2512         start = freeme = cql2pqf(c, q->query_string);
2513         if (start == 0)
2514             return 0;
2515     } else {
2516         yaz_log(YLOG_FATAL, "%p ZOOM_connection_scan1 q=%p unknown type '%s'",
2517                 c, q, q->query_string);
2518         abort();
2519     }
2520
2521     scan->termListAndStartPoint =
2522         p_query_scan(scan->odr, PROTO_Z3950, &scan->attributeSet, start);
2523     xfree (freeme);
2524     if (scan->termListAndStartPoint != 0)
2525     {
2526         ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_SCAN);
2527         task->u.scan.scan = scan;
2528
2529         (scan->refcount)++;
2530         if (!c->async)
2531         {
2532             while (ZOOM_event (1, &c))
2533                 ;
2534         }
2535     }
2536     return scan;
2537 }
2538
2539 ZOOM_API(void)
2540 ZOOM_scanset_destroy (ZOOM_scanset scan)
2541 {
2542     if (!scan)
2543         return;
2544     (scan->refcount)--;
2545     if (scan->refcount == 0)
2546     {
2547         odr_destroy (scan->odr);
2548
2549         ZOOM_options_destroy (scan->options);
2550         xfree (scan);
2551     }
2552 }
2553
2554 static zoom_ret send_package (ZOOM_connection c)
2555 {
2556     ZOOM_Event event;
2557
2558     yaz_log(log_details, "%p send_package", c);
2559     if (!c->tasks)
2560         return zoom_complete;
2561     assert (c->tasks->which == ZOOM_TASK_PACKAGE);
2562
2563     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
2564     ZOOM_connection_put_event (c, event);
2565
2566     c->buf_out = c->tasks->u.package->buf_out;
2567     c->len_out = c->tasks->u.package->len_out;
2568
2569     return do_write(c);
2570 }
2571
2572 static zoom_ret send_scan (ZOOM_connection c)
2573 {
2574     ZOOM_scanset scan;
2575     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_scanRequest);
2576     Z_ScanRequest *req = apdu->u.scanRequest;
2577
2578     yaz_log(log_details, "%p send_scan", c);
2579     if (!c->tasks)
2580         return zoom_complete;
2581     assert (c->tasks->which == ZOOM_TASK_SCAN);
2582     scan = c->tasks->u.scan.scan;
2583
2584     req->termListAndStartPoint = scan->termListAndStartPoint;
2585     req->attributeSet = scan->attributeSet;
2586
2587     *req->numberOfTermsRequested =
2588         ZOOM_options_get_int(scan->options, "number", 10);
2589
2590     req->preferredPositionInResponse =
2591         odr_intdup (c->odr_out,
2592                     ZOOM_options_get_int(scan->options, "position", 1));
2593
2594     req->stepSize =
2595         odr_intdup (c->odr_out,
2596                     ZOOM_options_get_int(scan->options, "stepSize", 0));
2597
2598     req->databaseNames = set_DatabaseNames (c, scan->options,
2599                                             &req->num_databaseNames);
2600
2601     return send_APDU (c, apdu);
2602 }
2603
2604 ZOOM_API(size_t)
2605 ZOOM_scanset_size (ZOOM_scanset scan)
2606 {
2607     if (!scan || !scan->scan_response || !scan->scan_response->entries)
2608         return 0;
2609     return scan->scan_response->entries->num_entries;
2610 }
2611
2612 ZOOM_API(const char *)
2613 ZOOM_scanset_term (ZOOM_scanset scan, size_t pos,
2614                    int *occ, int *len)
2615 {
2616     const char *term = 0;
2617     size_t noent = ZOOM_scanset_size (scan);
2618     Z_ScanResponse *res = scan->scan_response;
2619
2620     *len = 0;
2621     *occ = 0;
2622     if (pos >= noent)
2623         return 0;
2624     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2625     {
2626         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2627
2628         if (t->term->which == Z_Term_general)
2629         {
2630             term = (const char *) t->term->u.general->buf;
2631             *len = t->term->u.general->len;
2632         }
2633         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2634     }
2635     return term;
2636 }
2637
2638 ZOOM_API(const char *)
2639 ZOOM_scanset_display_term (ZOOM_scanset scan, size_t pos,
2640                            int *occ, int *len)
2641 {
2642     const char *term = 0;
2643     size_t noent = ZOOM_scanset_size (scan);
2644     Z_ScanResponse *res = scan->scan_response;
2645
2646     *len = 0;
2647     *occ = 0;
2648     if (pos >= noent)
2649         return 0;
2650     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2651     {
2652         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2653
2654         if (t->displayTerm)
2655         {
2656             term = t->displayTerm;
2657             *len = strlen(term);
2658         }
2659         else if (t->term->which == Z_Term_general)
2660         {
2661             term = (const char *) t->term->u.general->buf;
2662             *len = t->term->u.general->len;
2663         }
2664         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2665     }
2666     return term;
2667 }
2668
2669 ZOOM_API(const char *)
2670 ZOOM_scanset_option_get (ZOOM_scanset scan, const char *key)
2671 {
2672     return ZOOM_options_get (scan->options, key);
2673 }
2674
2675 ZOOM_API(void)
2676 ZOOM_scanset_option_set (ZOOM_scanset scan, const char *key,
2677                               const char *val)
2678 {
2679     ZOOM_options_set (scan->options, key, val);
2680 }
2681
2682 static Z_APDU *create_es_package (ZOOM_package p, int type)
2683 {
2684     const char *str;
2685     Z_APDU *apdu = zget_APDU(p->odr_out, Z_APDU_extendedServicesRequest);
2686     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2687
2688     *req->function = Z_ExtendedServicesRequest_create;
2689
2690     str = ZOOM_options_get(p->options, "package-name");
2691     if (str && *str)
2692         req->packageName = nmem_strdup (p->odr_out->mem, str);
2693
2694     str = ZOOM_options_get(p->options, "user-id");
2695     if (str)
2696         req->userId = nmem_strdup (p->odr_out->mem, str);
2697
2698     req->packageType = yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2699                                               type);
2700
2701     str = ZOOM_options_get(p->options, "function");
2702     if (str)
2703     {
2704         if (!strcmp (str, "create"))
2705             *req->function = 1;
2706         if (!strcmp (str, "delete"))
2707             *req->function = 2;
2708         if (!strcmp (str, "modify"))
2709             *req->function = 3;
2710     }
2711     return apdu;
2712 }
2713
2714 static const char *ill_array_lookup (void *clientData, const char *idx)
2715 {
2716     ZOOM_package p = (ZOOM_package) clientData;
2717     return ZOOM_options_get (p->options, idx+4);
2718 }
2719
2720 static Z_External *encode_ill_request (ZOOM_package p)
2721 {
2722     ODR out = p->odr_out;
2723     ILL_Request *req;
2724     Z_External *r = 0;
2725     struct ill_get_ctl ctl;
2726
2727     ctl.odr = p->odr_out;
2728     ctl.clientData = p;
2729     ctl.f = ill_array_lookup;
2730
2731     req = ill_get_ILLRequest(&ctl, "ill", 0);
2732
2733     if (!ill_Request (out, &req, 0, 0))
2734     {
2735         int ill_request_size;
2736         char *ill_request_buf = odr_getbuf (out, &ill_request_size, 0);
2737         if (ill_request_buf)
2738             odr_setbuf (out, ill_request_buf, ill_request_size, 1);
2739         return 0;
2740     }
2741     else
2742     {
2743         oident oid;
2744         int illRequest_size = 0;
2745         char *illRequest_buf = odr_getbuf (out, &illRequest_size, 0);
2746
2747         oid.proto = PROTO_GENERAL;
2748         oid.oclass = CLASS_GENERAL;
2749         oid.value = VAL_ISO_ILL_1;
2750
2751         r = (Z_External *) odr_malloc (out, sizeof(*r));
2752         r->direct_reference = odr_oiddup(out,oid_getoidbyent(&oid));
2753         r->indirect_reference = 0;
2754         r->descriptor = 0;
2755         r->which = Z_External_single;
2756
2757         r->u.single_ASN1_type =
2758             odr_create_Odr_oct(out,
2759                                (unsigned char *)illRequest_buf,
2760                                illRequest_size);
2761     }
2762     return r;
2763 }
2764
2765 static Z_ItemOrder *encode_item_order(ZOOM_package p)
2766 {
2767     Z_ItemOrder *req = (Z_ItemOrder *) odr_malloc (p->odr_out, sizeof(*req));
2768     const char *str;
2769
2770     req->which = Z_IOItemOrder_esRequest;
2771     req->u.esRequest = (Z_IORequest *)
2772         odr_malloc(p->odr_out,sizeof(Z_IORequest));
2773
2774     /* to keep part ... */
2775     req->u.esRequest->toKeep = (Z_IOOriginPartToKeep *)
2776         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartToKeep));
2777     req->u.esRequest->toKeep->supplDescription = 0;
2778     req->u.esRequest->toKeep->contact = (Z_IOContact *)
2779         odr_malloc (p->odr_out, sizeof(*req->u.esRequest->toKeep->contact));
2780
2781     str = ZOOM_options_get(p->options, "contact-name");
2782     req->u.esRequest->toKeep->contact->name = str ?
2783         nmem_strdup (p->odr_out->mem, str) : 0;
2784
2785     str = ZOOM_options_get(p->options, "contact-phone");
2786     req->u.esRequest->toKeep->contact->phone = str ?
2787         nmem_strdup (p->odr_out->mem, str) : 0;
2788
2789     str = ZOOM_options_get(p->options, "contact-email");
2790     req->u.esRequest->toKeep->contact->email = str ?
2791         nmem_strdup (p->odr_out->mem, str) : 0;
2792
2793     req->u.esRequest->toKeep->addlBilling = 0;
2794
2795     /* not to keep part ... */
2796     req->u.esRequest->notToKeep = (Z_IOOriginPartNotToKeep *)
2797         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartNotToKeep));
2798
2799     str = ZOOM_options_get(p->options, "itemorder-setname");
2800     if (!str)
2801         str = "default";
2802
2803     if (!*str)
2804         req->u.esRequest->notToKeep->resultSetItem = 0;
2805     else
2806     {
2807         req->u.esRequest->notToKeep->resultSetItem = (Z_IOResultSetItem *)
2808            odr_malloc(p->odr_out, sizeof(Z_IOResultSetItem));
2809
2810         req->u.esRequest->notToKeep->resultSetItem->resultSetId =
2811            nmem_strdup (p->odr_out->mem, str);
2812         req->u.esRequest->notToKeep->resultSetItem->item =
2813             (int *) odr_malloc(p->odr_out, sizeof(int));
2814
2815         str = ZOOM_options_get(p->options, "itemorder-item");
2816         *req->u.esRequest->notToKeep->resultSetItem->item =
2817             (str ? atoi(str) : 1);
2818     }
2819     req->u.esRequest->notToKeep->itemRequest = encode_ill_request(p);
2820
2821     return req;
2822 }
2823
2824 Z_APDU *create_admin_package(ZOOM_package p, int type,
2825                              Z_ESAdminOriginPartToKeep **toKeepP,
2826                              Z_ESAdminOriginPartNotToKeep **notToKeepP)
2827 {
2828     Z_APDU *apdu = create_es_package (p, VAL_ADMINSERVICE);
2829     if (apdu)
2830     {
2831         Z_ESAdminOriginPartToKeep  *toKeep;
2832         Z_ESAdminOriginPartNotToKeep  *notToKeep;
2833         Z_External *r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
2834         const char *first_db = "Default";
2835         int num_db;
2836         char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2837         if (num_db > 0)
2838             first_db = db[0];
2839
2840         r->direct_reference =
2841             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2842                                    VAL_ADMINSERVICE);
2843         r->descriptor = 0;
2844         r->indirect_reference = 0;
2845         r->which = Z_External_ESAdmin;
2846
2847         r->u.adminService = (Z_Admin *)
2848             odr_malloc(p->odr_out, sizeof(*r->u.adminService));
2849         r->u.adminService->which = Z_Admin_esRequest;
2850         r->u.adminService->u.esRequest = (Z_AdminEsRequest *)
2851             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest));
2852
2853         toKeep = r->u.adminService->u.esRequest->toKeep =
2854             (Z_ESAdminOriginPartToKeep *)
2855             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest->toKeep));
2856         toKeep->which = type;
2857         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2858         toKeep->u.create = odr_nullval();
2859         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2860
2861         r->u.adminService->u.esRequest->notToKeep = notToKeep =
2862             (Z_ESAdminOriginPartNotToKeep *)
2863             odr_malloc(p->odr_out,
2864                        sizeof(*r->u.adminService->u.esRequest->notToKeep));
2865         notToKeep->which = Z_ESAdminOriginPartNotToKeep_recordsWillFollow;
2866         notToKeep->u.recordsWillFollow = odr_nullval();
2867         if (toKeepP)
2868             *toKeepP = toKeep;
2869         if (notToKeepP)
2870             *notToKeepP = notToKeep;
2871     }
2872     return apdu;
2873 }
2874
2875 static Z_APDU *create_xmlupdate_package(ZOOM_package p)
2876 {
2877     Z_APDU *apdu = create_es_package(p, VAL_XMLES);
2878     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2879     Z_External *ext = (Z_External *) odr_malloc(p->odr_out, sizeof(*ext));
2880     const char *doc = ZOOM_options_get(p->options, "doc");
2881
2882     if (!doc)
2883         doc = "";
2884
2885     req->taskSpecificParameters = ext;
2886     ext->direct_reference = req->packageType;
2887     ext->descriptor = 0;
2888     ext->indirect_reference = 0;
2889
2890     ext->which = Z_External_octet;
2891     ext->u.single_ASN1_type =
2892         odr_create_Odr_oct(p->odr_out, (const unsigned char *) doc,
2893                            strlen(doc));
2894     return apdu;
2895 }
2896
2897 static Z_APDU *create_update_package(ZOOM_package p)
2898 {
2899     Z_APDU *apdu = 0;
2900     const char *first_db = "Default";
2901     int num_db;
2902     char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2903     const char *action = ZOOM_options_get(p->options, "action");
2904     const char *recordIdOpaque = ZOOM_options_get(p->options, "recordIdOpaque");
2905     const char *recordIdNumber = ZOOM_options_get(p->options, "recordIdNumber");
2906     const char *record_buf = ZOOM_options_get(p->options, "record");
2907     const char *syntax_str = ZOOM_options_get(p->options, "syntax");
2908     int syntax_oid = VAL_NONE;
2909     int action_no = -1;
2910
2911     if (syntax_str)
2912         syntax_oid = oid_getvalbyname(syntax_str);
2913     if (!record_buf)
2914     {
2915         record_buf = "void";
2916         syntax_oid = VAL_SUTRS;
2917     }
2918     if (syntax_oid == VAL_NONE)
2919         syntax_oid = VAL_TEXT_XML;
2920
2921     if (num_db > 0)
2922         first_db = db[0];
2923
2924     if (!action)
2925         action = "specialUpdate";
2926
2927     if (!strcmp(action, "recordInsert"))
2928         action_no = Z_IUOriginPartToKeep_recordInsert;
2929     else if (!strcmp(action, "recordReplace"))
2930         action_no = Z_IUOriginPartToKeep_recordReplace;
2931     else if (!strcmp(action, "recordDelete"))
2932         action_no = Z_IUOriginPartToKeep_recordDelete;
2933     else if (!strcmp(action, "elementUpdate"))
2934         action_no = Z_IUOriginPartToKeep_elementUpdate;
2935     else if (!strcmp(action, "specialUpdate"))
2936         action_no = Z_IUOriginPartToKeep_specialUpdate;
2937     else
2938         return 0;
2939
2940     apdu = create_es_package (p, VAL_DBUPDATE);
2941     if (apdu)
2942     {
2943         Z_IUOriginPartToKeep *toKeep;
2944         Z_IUSuppliedRecords *notToKeep;
2945         Z_External *r = (Z_External *)
2946             odr_malloc (p->odr_out, sizeof(*r));
2947
2948         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2949
2950         r->direct_reference =
2951             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2952                                    VAL_DBUPDATE);
2953         r->descriptor = 0;
2954         r->which = Z_External_update;
2955         r->indirect_reference = 0;
2956         r->u.update = (Z_IUUpdate *)
2957             odr_malloc(p->odr_out, sizeof(*r->u.update));
2958
2959         r->u.update->which = Z_IUUpdate_esRequest;
2960         r->u.update->u.esRequest = (Z_IUUpdateEsRequest *)
2961             odr_malloc(p->odr_out, sizeof(*r->u.update->u.esRequest));
2962         toKeep = r->u.update->u.esRequest->toKeep =
2963             (Z_IUOriginPartToKeep *)
2964             odr_malloc(p->odr_out, sizeof(*toKeep));
2965
2966         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2967         toKeep->schema = 0;
2968         toKeep->elementSetName = 0;
2969         toKeep->actionQualifier = 0;
2970         toKeep->action = odr_intdup(p->odr_out, action_no);
2971
2972         notToKeep = r->u.update->u.esRequest->notToKeep =
2973             (Z_IUSuppliedRecords *)
2974             odr_malloc(p->odr_out, sizeof(*notToKeep));
2975         notToKeep->num = 1;
2976         notToKeep->elements = (Z_IUSuppliedRecords_elem **)
2977             odr_malloc(p->odr_out, sizeof(*notToKeep->elements));
2978         notToKeep->elements[0] = (Z_IUSuppliedRecords_elem *)
2979             odr_malloc(p->odr_out, sizeof(**notToKeep->elements));
2980         notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_opaque;
2981         if (recordIdOpaque)
2982         {
2983             notToKeep->elements[0]->u.opaque =
2984                 odr_create_Odr_oct(p->odr_out,
2985                                    (const unsigned char *) recordIdOpaque,
2986                                    strlen(recordIdOpaque));
2987         }
2988         else if (recordIdNumber)
2989         {
2990             notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_number;
2991
2992             notToKeep->elements[0]->u.number =
2993                 odr_intdup(p->odr_out, atoi(recordIdNumber));
2994         }
2995         else
2996             notToKeep->elements[0]->u.opaque = 0;
2997         notToKeep->elements[0]->supplementalId = 0;
2998         notToKeep->elements[0]->correlationInfo = 0;
2999         notToKeep->elements[0]->record =
3000             z_ext_record(p->odr_out, syntax_oid,
3001                          record_buf, strlen(record_buf));
3002     }
3003     if (0 && apdu)
3004     {
3005        ODR print = odr_createmem(ODR_PRINT);
3006
3007        z_APDU(print, &apdu, 0, 0);
3008        odr_destroy(print);
3009     }
3010     return apdu;
3011 }
3012
3013 ZOOM_API(void)
3014     ZOOM_package_send (ZOOM_package p, const char *type)
3015 {
3016     Z_APDU *apdu = 0;
3017     ZOOM_connection c;
3018     if (!p)
3019         return;
3020     c = p->connection;
3021     odr_reset (p->odr_out);
3022     xfree (p->buf_out);
3023     p->buf_out = 0;
3024     if (!strcmp(type, "itemorder"))
3025     {
3026         apdu = create_es_package (p, VAL_ITEMORDER);
3027         if (apdu)
3028         {
3029             Z_External *r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
3030
3031             r->direct_reference =
3032                 yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
3033                                        VAL_ITEMORDER);
3034             r->descriptor = 0;
3035             r->which = Z_External_itemOrder;
3036             r->indirect_reference = 0;
3037             r->u.itemOrder = encode_item_order (p);
3038
3039             apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3040         }
3041     }
3042     else if (!strcmp(type, "create"))  /* create database */
3043     {
3044         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_create,
3045                                     0, 0);
3046     }
3047     else if (!strcmp(type, "drop"))  /* drop database */
3048     {
3049         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_drop,
3050                                     0, 0);
3051     }
3052     else if (!strcmp(type, "commit"))  /* commit changes */
3053     {
3054         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_commit,
3055                                     0, 0);
3056     }
3057     else if (!strcmp(type, "update")) /* update record(s) */
3058     {
3059         apdu = create_update_package(p);
3060     }
3061     else if (!strcmp(type, "xmlupdate"))
3062     {
3063         apdu = create_xmlupdate_package(p);
3064     }
3065     if (apdu)
3066     {
3067         if (encode_APDU(p->connection, apdu, p->odr_out) == 0)
3068         {
3069             char *buf;
3070
3071             ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_PACKAGE);
3072             task->u.package = p;
3073             buf = odr_getbuf(p->odr_out, &p->len_out, 0);
3074             p->buf_out = (char *) xmalloc (p->len_out);
3075             memcpy (p->buf_out, buf, p->len_out);
3076
3077             (p->refcount)++;
3078             if (!c->async)
3079             {
3080                 while (ZOOM_event (1, &c))
3081                     ;
3082             }
3083         }
3084     }
3085 }
3086
3087 ZOOM_API(ZOOM_package)
3088     ZOOM_connection_package (ZOOM_connection c, ZOOM_options options)
3089 {
3090     ZOOM_package p = (ZOOM_package) xmalloc (sizeof(*p));
3091
3092     p->connection = c;
3093     p->odr_out = odr_createmem (ODR_ENCODE);
3094     p->options = ZOOM_options_create_with_parent2 (options, c->options);
3095     p->refcount = 1;
3096     p->buf_out = 0;
3097     p->len_out = 0;
3098     return p;
3099 }
3100
3101 ZOOM_API(void)
3102     ZOOM_package_destroy(ZOOM_package p)
3103 {
3104     if (!p)
3105         return;
3106     (p->refcount)--;
3107     if (p->refcount == 0)
3108     {
3109         odr_destroy (p->odr_out);
3110         xfree (p->buf_out);
3111
3112         ZOOM_options_destroy (p->options);
3113         xfree (p);
3114     }
3115 }
3116
3117 ZOOM_API(const char *)
3118 ZOOM_package_option_get (ZOOM_package p, const char *key)
3119 {
3120     return ZOOM_options_get (p->options, key);
3121 }
3122
3123
3124 ZOOM_API(void)
3125 ZOOM_package_option_set (ZOOM_package p, const char *key,
3126                               const char *val)
3127 {
3128     ZOOM_options_set (p->options, key, val);
3129 }
3130
3131 static int ZOOM_connection_exec_task (ZOOM_connection c)
3132 {
3133     ZOOM_task task = c->tasks;
3134     zoom_ret ret = zoom_complete;
3135
3136     if (!task)
3137         return 0;
3138     yaz_log(log_details, "%p ZOOM_connection_exec_task type=%d run=%d",
3139              c, task->which, task->running);
3140     if (c->error != ZOOM_ERROR_NONE)
3141     {
3142         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3143                 "removing tasks because of error = %d", c, c->error);
3144         ZOOM_connection_remove_tasks (c);
3145         return 0;
3146     }
3147     if (task->running)
3148     {
3149         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3150                  "task already running", c);
3151         return 0;
3152     }
3153     task->running = 1;
3154     ret = zoom_complete;
3155     if (c->cs || task->which == ZOOM_TASK_CONNECT)
3156     {
3157         switch (task->which)
3158         {
3159         case ZOOM_TASK_SEARCH:
3160             if (c->proto == PROTO_HTTP)
3161                 ret = ZOOM_connection_srw_send_search(c);
3162             else
3163                 ret = ZOOM_connection_send_search(c);
3164             break;
3165         case ZOOM_TASK_RETRIEVE:
3166             if (c->proto == PROTO_HTTP)
3167                 ret = ZOOM_connection_srw_send_search(c);
3168             else
3169                 ret = send_present (c);
3170             break;
3171         case ZOOM_TASK_CONNECT:
3172             ret = do_connect(c);
3173             break;
3174         case ZOOM_TASK_SCAN:
3175             ret = send_scan(c);
3176             break;
3177         case ZOOM_TASK_PACKAGE:
3178             ret = send_package(c);
3179             break;
3180         case ZOOM_TASK_SORT:
3181             c->tasks->u.sort.resultset->r_sort_spec =
3182                 c->tasks->u.sort.q->sort_spec;
3183             ret = send_sort(c, c->tasks->u.sort.resultset);
3184             break;
3185         }
3186     }
3187     else
3188     {
3189         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3190                 "remove tasks because no connection exist", c);
3191         ZOOM_connection_remove_tasks (c);
3192     }
3193     if (ret == zoom_complete)
3194     {
3195         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3196                  "task removed (complete)", c);
3197         ZOOM_connection_remove_task (c);
3198         return 0;
3199     }
3200     yaz_log(log_details, "%p ZOOM_connection_exec_task "
3201             "task pending", c);
3202     return 1;
3203 }
3204
3205 static zoom_ret send_sort_present (ZOOM_connection c)
3206 {
3207     zoom_ret r = zoom_complete;
3208
3209     if (c->tasks && c->tasks->which == ZOOM_TASK_SEARCH)
3210         r = send_sort (c, c->tasks->u.search.resultset);
3211     if (r == zoom_complete)
3212         r = send_present (c);
3213     return r;
3214 }
3215
3216 static int es_response (ZOOM_connection c,
3217                         Z_ExtendedServicesResponse *res)
3218 {
3219     if (!c->tasks || c->tasks->which != ZOOM_TASK_PACKAGE)
3220         return 0;
3221     if (res->diagnostics && res->num_diagnostics > 0)
3222         response_diag(c, res->diagnostics[0]);
3223     if (res->taskPackage &&
3224         res->taskPackage->which == Z_External_extendedService)
3225     {
3226         Z_TaskPackage *taskPackage = res->taskPackage->u.extendedService;
3227         Odr_oct *id = taskPackage->targetReference;
3228
3229         if (id)
3230             ZOOM_options_setl (c->tasks->u.package->options,
3231                                "targetReference", (char*) id->buf, id->len);
3232     }
3233     if (res->taskPackage &&
3234         res->taskPackage->which == Z_External_octet)
3235     {
3236         Odr_oct *doc = res->taskPackage->u.octet_aligned;
3237         ZOOM_options_setl (c->tasks->u.package->options,
3238                            "xmlUpdateDoc", (char*) doc->buf, doc->len);
3239     }
3240     return 1;
3241 }
3242
3243 static void interpret_init_diag(ZOOM_connection c,
3244                                 Z_DiagnosticFormat *diag)
3245 {
3246     if (diag->num > 0)
3247     {
3248         Z_DiagnosticFormat_s *ds = diag->elements[0];
3249         if (ds->which == Z_DiagnosticFormat_s_defaultDiagRec)
3250             response_default_diag(c, ds->u.defaultDiagRec);
3251     }
3252 }
3253
3254
3255 static void interpret_otherinformation_field(ZOOM_connection c,
3256                                              Z_OtherInformation *ui)
3257 {
3258     int i;
3259     for (i = 0; i < ui->num_elements; i++)
3260     {
3261         Z_OtherInformationUnit *unit = ui->list[i];
3262         if (unit->which == Z_OtherInfo_externallyDefinedInfo &&
3263             unit->information.externallyDefinedInfo &&
3264             unit->information.externallyDefinedInfo->which ==
3265             Z_External_diag1)
3266         {
3267             interpret_init_diag(c, unit->information.externallyDefinedInfo->u.diag1);
3268         }
3269     }
3270 }
3271
3272 static void recv_apdu (ZOOM_connection c, Z_APDU *apdu)
3273 {
3274     Z_InitResponse *initrs;
3275
3276     c->mask = 0;
3277     yaz_log(log_details, "%p recv_apdu apdu->which=%d", c, apdu->which);
3278     switch(apdu->which)
3279     {
3280     case Z_APDU_initResponse:
3281         yaz_log(log_api, "%p recv_apd: Received Init response", c);
3282         initrs = apdu->u.initResponse;
3283         ZOOM_connection_option_set(c, "serverImplementationId",
3284                                    initrs->implementationId ?
3285                                    initrs->implementationId : "");
3286         ZOOM_connection_option_set(c, "serverImplementationName",
3287                                    initrs->implementationName ?
3288                                    initrs->implementationName : "");
3289         ZOOM_connection_option_set(c, "serverImplementationVersion",
3290                                    initrs->implementationVersion ?
3291                                    initrs->implementationVersion : "");
3292         /* Set the three old options too, for old applications */
3293         ZOOM_connection_option_set(c, "targetImplementationId",
3294                                    initrs->implementationId ?
3295                                    initrs->implementationId : "");
3296         ZOOM_connection_option_set(c, "targetImplementationName",
3297                                    initrs->implementationName ?
3298                                    initrs->implementationName : "");
3299         ZOOM_connection_option_set(c, "targetImplementationVersion",
3300                                    initrs->implementationVersion ?
3301                                    initrs->implementationVersion : "");
3302         if (!*initrs->result)
3303         {
3304             Z_External *uif = initrs->userInformationField;
3305
3306             set_ZOOM_error(c, ZOOM_ERROR_INIT, 0); /* default error */
3307
3308             if (uif && uif->which == Z_External_userInfo1)
3309                 interpret_otherinformation_field(c, uif->u.userInfo1);
3310         }
3311         else
3312         {
3313             char *cookie =
3314                 yaz_oi_get_string_oidval (&apdu->u.initResponse->otherInfo,
3315                                           VAL_COOKIE, 1, 0);
3316             xfree (c->cookie_in);
3317             c->cookie_in = 0;
3318             if (cookie)
3319                 c->cookie_in = xstrdup(cookie);
3320             if (ODR_MASK_GET(initrs->options, Z_Options_namedResultSets) &&
3321                 ODR_MASK_GET(initrs->protocolVersion, Z_ProtocolVersion_3))
3322                 c->support_named_resultsets = 1;
3323             if (c->tasks)
3324             {
3325                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
3326                 ZOOM_connection_remove_task (c);
3327             }
3328             ZOOM_connection_exec_task (c);
3329         }
3330         if (ODR_MASK_GET(initrs->options, Z_Options_negotiationModel))
3331         {
3332             NMEM tmpmem = nmem_create();
3333             Z_CharSetandLanguageNegotiation *p =
3334                 yaz_get_charneg_record(initrs->otherInfo);
3335
3336             if (p)
3337             {
3338                 char *charset = NULL, *lang = NULL;
3339                 int sel;
3340
3341                 yaz_get_response_charneg(tmpmem, p, &charset, &lang, &sel);
3342                 yaz_log(log_details, "%p recv_apdu target accepted: "
3343                         "charset %s, language %s, select %d",
3344                         c,
3345                         charset ? charset : "none", lang ? lang : "none", sel);
3346                 if (charset)
3347                     ZOOM_connection_option_set (c, "negotiation-charset",
3348                                                 charset);
3349                 if (lang)
3350                     ZOOM_connection_option_set (c, "negotiation-lang",
3351                                                 lang);
3352
3353                 ZOOM_connection_option_set (
3354                     c,  "negotiation-charset-in-effect-for-records",
3355                     (sel != 0) ? "1" : "0");
3356                 nmem_destroy(tmpmem);
3357             }
3358         }
3359         break;
3360     case Z_APDU_searchResponse:
3361         yaz_log(log_api, "%p recv_apdu Search response", c);
3362         handle_search_response (c, apdu->u.searchResponse);
3363         if (send_sort_present (c) == zoom_complete)
3364             ZOOM_connection_remove_task (c);
3365         break;
3366     case Z_APDU_presentResponse:
3367         yaz_log(log_api, "%p recv_apdu Present response", c);
3368         handle_present_response (c, apdu->u.presentResponse);
3369         if (send_present (c) == zoom_complete)
3370             ZOOM_connection_remove_task (c);
3371         break;
3372     case Z_APDU_sortResponse:
3373         yaz_log(log_api, "%p recv_apdu Sort response", c);
3374         sort_response (c, apdu->u.sortResponse);
3375         if (send_present (c) == zoom_complete)
3376             ZOOM_connection_remove_task (c);
3377         break;
3378     case Z_APDU_scanResponse:
3379         yaz_log(log_api, "%p recv_apdu Scan response", c);
3380         scan_response (c, apdu->u.scanResponse);
3381         ZOOM_connection_remove_task (c);
3382         break;
3383     case Z_APDU_extendedServicesResponse:
3384         yaz_log(log_api, "%p recv_apdu Extended Services response", c);
3385         es_response (c, apdu->u.extendedServicesResponse);
3386         ZOOM_connection_remove_task (c);
3387         break;
3388     case Z_APDU_close:
3389         yaz_log(log_api, "%p recv_apdu Close PDU", c);
3390         if (c->reconnect_ok)
3391         {
3392             do_close(c);
3393             c->tasks->running = 0;
3394             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3395         }
3396         else
3397         {
3398             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3399             do_close(c);
3400         }
3401         break;
3402     default:
3403         yaz_log(log_api, "%p Received unknown PDU", c);
3404         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3405         do_close(c);
3406     }
3407 }
3408
3409 #if HAVE_XML2
3410 static void handle_srw_response(ZOOM_connection c,
3411                                 Z_SRW_searchRetrieveResponse *res)
3412 {
3413     ZOOM_resultset resultset = 0;
3414     int i;
3415     NMEM nmem;
3416     ZOOM_Event event;
3417
3418     if (!c->tasks)
3419         return;
3420
3421     if (c->tasks->which == ZOOM_TASK_SEARCH)
3422         resultset = c->tasks->u.search.resultset;
3423     else if (c->tasks->which == ZOOM_TASK_RETRIEVE)
3424         resultset = c->tasks->u.retrieve.resultset;
3425     else
3426         return ;
3427
3428     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
3429     ZOOM_connection_put_event(c, event);
3430
3431     resultset->size = 0;
3432
3433     yaz_log(log_details, "%p handle_srw_response got SRW response OK", c);
3434
3435     if (res->numberOfRecords)
3436         resultset->size = *res->numberOfRecords;
3437
3438     for (i = 0; i<res->num_records; i++)
3439     {
3440         int pos;
3441
3442         Z_NamePlusRecord *npr = (Z_NamePlusRecord *)
3443             odr_malloc(c->odr_in, sizeof(Z_NamePlusRecord));
3444
3445         if (res->records[i].recordPosition &&
3446             *res->records[i].recordPosition > 0)
3447             pos = *res->records[i].recordPosition - 1;
3448         else
3449             pos = resultset->start + i;
3450
3451         npr->databaseName = 0;
3452         npr->which = Z_NamePlusRecord_databaseRecord;
3453         npr->u.databaseRecord = (Z_External *)
3454             odr_malloc(c->odr_in, sizeof(Z_External));
3455         npr->u.databaseRecord->descriptor = 0;
3456         npr->u.databaseRecord->direct_reference =
3457             yaz_oidval_to_z3950oid(c->odr_in, CLASS_RECSYN, VAL_TEXT_XML);
3458         npr->u.databaseRecord->which = Z_External_octet;
3459
3460         npr->u.databaseRecord->u.octet_aligned = (Odr_oct *)
3461             odr_malloc(c->odr_in, sizeof(Odr_oct));
3462         npr->u.databaseRecord->u.octet_aligned->buf = (unsigned char*)
3463             res->records[i].recordData_buf;
3464         npr->u.databaseRecord->u.octet_aligned->len =
3465             npr->u.databaseRecord->u.octet_aligned->size =
3466             res->records[i].recordData_len;
3467         record_cache_add (resultset, npr, pos);
3468     }
3469     if (res->num_diagnostics > 0)
3470     {
3471         const char *uri = res->diagnostics[0].uri;
3472         if (uri)
3473         {
3474             int code = 0;
3475             const char *cp;
3476             if ((cp = strrchr(uri, '/')))
3477                 code = atoi(cp+1);
3478             set_dset_error(c, code, uri,
3479                            res->diagnostics[0].details, 0);
3480         }
3481     }
3482     nmem = odr_extract_mem(c->odr_in);
3483     nmem_transfer(resultset->odr->mem, nmem);
3484     nmem_destroy(nmem);
3485 }
3486 #endif
3487
3488 #if HAVE_XML2
3489 static void handle_http(ZOOM_connection c, Z_HTTP_Response *hres)
3490 {
3491     int ret = -1;
3492     const char *content_type = z_HTTP_header_lookup(hres->headers,
3493                                                     "Content-Type");
3494     const char *connection_head = z_HTTP_header_lookup(hres->headers,
3495                                                        "Connection");
3496     c->mask = 0;
3497     yaz_log(log_details, "%p handle_http", c);
3498
3499     if (content_type && !yaz_strcmp_del("text/xml", content_type, "; "))
3500     {
3501         Z_SOAP *soap_package = 0;
3502         ODR o = c->odr_in;
3503         Z_SOAP_Handler soap_handlers[2] = {
3504             {"http://www.loc.gov/zing/srw/", 0,
3505              (Z_SOAP_fun) yaz_srw_codec},
3506             {0, 0, 0}
3507         };
3508         ret = z_soap_codec(o, &soap_package,
3509                            &hres->content_buf, &hres->content_len,
3510                            soap_handlers);
3511         if (!ret && soap_package->which == Z_SOAP_generic &&
3512             soap_package->u.generic->no == 0)
3513         {
3514             Z_SRW_PDU *sr = (Z_SRW_PDU*) soap_package->u.generic->p;
3515             if (sr->which == Z_SRW_searchRetrieve_response)
3516                 handle_srw_response(c, sr->u.response);
3517             else
3518                 ret = -1;
3519         }
3520         else if (!ret && (soap_package->which == Z_SOAP_fault
3521                           || soap_package->which == Z_SOAP_error))
3522         {
3523             set_HTTP_error(c, hres->code,
3524                            soap_package->u.fault->fault_code,
3525                            soap_package->u.fault->fault_string);
3526         }
3527         else
3528             ret = -1;
3529     }
3530     if (ret)
3531     {
3532         if (hres->code != 200)
3533             set_HTTP_error(c, hres->code, 0, 0);
3534         else
3535             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3536         do_close (c);
3537     }
3538     ZOOM_connection_remove_task(c);
3539     if (!strcmp(hres->version, "1.0"))
3540     {
3541         /* HTTP 1.0: only if Keep-Alive we stay alive.. */
3542         if (!connection_head || strcmp(connection_head, "Keep-Alive"))
3543             do_close(c);
3544     }
3545     else
3546     {
3547         /* HTTP 1.1: only if no close we stay alive .. */
3548         if (connection_head && !strcmp(connection_head, "close"))
3549             do_close(c);
3550     }
3551 }
3552 #endif
3553
3554 static int do_read (ZOOM_connection c)
3555 {
3556     int r, more;
3557     ZOOM_Event event;
3558
3559     event = ZOOM_Event_create (ZOOM_EVENT_RECV_DATA);
3560     ZOOM_connection_put_event (c, event);
3561
3562     r = cs_get (c->cs, &c->buf_in, &c->len_in);
3563     more = cs_more(c->cs);
3564     yaz_log(log_details, "%p do_read len=%d more=%d", c, r, more);
3565     if (r == 1)
3566         return 0;
3567     if (r <= 0)
3568     {
3569         if (c->reconnect_ok)
3570         {
3571             do_close (c);
3572             c->reconnect_ok = 0;
3573             yaz_log(log_details, "%p do_read reconnect read", c);
3574             c->tasks->running = 0;
3575             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3576         }
3577         else
3578         {
3579             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3580             do_close (c);
3581         }
3582     }
3583     else
3584     {
3585         Z_GDU *gdu;
3586         ZOOM_Event event;
3587
3588         odr_reset (c->odr_in);
3589         odr_setbuf (c->odr_in, c->buf_in, r, 0);
3590         event = ZOOM_Event_create (ZOOM_EVENT_RECV_APDU);
3591         ZOOM_connection_put_event (c, event);
3592
3593         if (!z_GDU (c->odr_in, &gdu, 0, 0))
3594         {
3595             int x;
3596             int err = odr_geterrorx(c->odr_in, &x);
3597             char msg[60];
3598             const char *element = odr_getelement(c->odr_in);
3599             sprintf (msg, "ODR code %d:%d element=%-20s",
3600                      err, x, element ? element : "<unknown>");
3601             set_ZOOM_error(c, ZOOM_ERROR_DECODE, msg);
3602             do_close (c);
3603         }
3604         else if (gdu->which == Z_GDU_Z3950)
3605             recv_apdu (c, gdu->u.z3950);
3606         else if (gdu->which == Z_GDU_HTTP_Response)
3607         {
3608 #if HAVE_XML2
3609             handle_http (c, gdu->u.HTTP_Response);
3610 #else
3611             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3612             do_close (c);
3613 #endif
3614         }
3615         c->reconnect_ok = 0;
3616     }
3617     return 1;
3618 }
3619
3620 static zoom_ret do_write_ex (ZOOM_connection c, char *buf_out, int len_out)
3621 {
3622     int r;
3623     ZOOM_Event event;
3624
3625     event = ZOOM_Event_create(ZOOM_EVENT_SEND_DATA);
3626     ZOOM_connection_put_event (c, event);
3627
3628     yaz_log(log_details, "%p do_write_ex len=%d", c, len_out);
3629     if ((r = cs_put(c->cs, buf_out, len_out)) < 0)
3630     {
3631         yaz_log(log_details, "%p do_write_ex write failed", c);
3632         if (c->reconnect_ok)
3633         {
3634             do_close (c);
3635             c->reconnect_ok = 0;
3636             yaz_log(log_details, "%p do_write_ex reconnect write", c);
3637             c->tasks->running = 0;
3638             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3639             return zoom_pending;
3640         }
3641         if (c->state == STATE_CONNECTING)
3642             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3643         else
3644             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3645         do_close (c);
3646         return zoom_complete;
3647     }
3648     else if (r == 1)
3649     {
3650         c->mask = ZOOM_SELECT_EXCEPT;
3651         if (c->cs->io_pending & CS_WANT_WRITE)
3652             c->mask += ZOOM_SELECT_WRITE;
3653         if (c->cs->io_pending & CS_WANT_READ)
3654             c->mask += ZOOM_SELECT_READ;
3655         yaz_log(log_details, "%p do_write_ex write incomplete mask=%d",
3656                 c, c->mask);
3657     }
3658     else
3659     {
3660         c->mask = ZOOM_SELECT_READ|ZOOM_SELECT_EXCEPT;
3661         yaz_log(log_details, "%p do_write_ex write complete mask=%d",
3662                 c, c->mask);
3663     }
3664     return zoom_pending;
3665 }
3666
3667 static zoom_ret do_write(ZOOM_connection c)
3668 {
3669     return do_write_ex (c, c->buf_out, c->len_out);
3670 }
3671
3672
3673 ZOOM_API(const char *)
3674 ZOOM_connection_option_get (ZOOM_connection c, const char *key)
3675 {
3676     return ZOOM_options_get (c->options, key);
3677 }
3678
3679 ZOOM_API(const char *)
3680 ZOOM_connection_option_getl (ZOOM_connection c, const char *key, int *lenp)
3681 {
3682     return ZOOM_options_getl (c->options, key, lenp);
3683 }
3684
3685 ZOOM_API(void)
3686 ZOOM_connection_option_set (ZOOM_connection c, const char *key,
3687                             const char *val)
3688 {
3689     ZOOM_options_set (c->options, key, val);
3690 }
3691
3692 ZOOM_API(void)
3693 ZOOM_connection_option_setl (ZOOM_connection c, const char *key,
3694                              const char *val, int len)
3695 {
3696     ZOOM_options_setl (c->options, key, val, len);
3697 }
3698
3699 ZOOM_API(const char *)
3700 ZOOM_resultset_option_get (ZOOM_resultset r, const char *key)
3701 {
3702     return ZOOM_options_get (r->options, key);
3703 }
3704
3705 ZOOM_API(void)
3706 ZOOM_resultset_option_set (ZOOM_resultset r, const char *key,
3707                                   const char *val)
3708 {
3709     ZOOM_options_set (r->options, key, val);
3710 }
3711
3712
3713 ZOOM_API(int)
3714 ZOOM_connection_errcode (ZOOM_connection c)
3715 {
3716     return ZOOM_connection_error (c, 0, 0);
3717 }
3718
3719 ZOOM_API(const char *)
3720 ZOOM_connection_errmsg (ZOOM_connection c)
3721 {
3722     const char *msg;
3723     ZOOM_connection_error (c, &msg, 0);
3724     return msg;
3725 }
3726
3727 ZOOM_API(const char *)
3728 ZOOM_connection_addinfo (ZOOM_connection c)
3729 {
3730     const char *addinfo;
3731     ZOOM_connection_error (c, 0, &addinfo);
3732     return addinfo;
3733 }
3734
3735 ZOOM_API(const char *)
3736 ZOOM_connection_diagset (ZOOM_connection c)
3737 {
3738     const char *diagset;
3739     ZOOM_connection_error_x (c, 0, 0, &diagset);
3740     return diagset;
3741 }
3742
3743 ZOOM_API(const char *)
3744 ZOOM_diag_str (int error)
3745 {
3746     switch (error)
3747     {
3748     case ZOOM_ERROR_NONE:
3749         return "No error";
3750     case ZOOM_ERROR_CONNECT:
3751         return "Connect failed";
3752     case ZOOM_ERROR_MEMORY:
3753         return "Out of memory";
3754     case ZOOM_ERROR_ENCODE:
3755         return "Encoding failed";
3756     case ZOOM_ERROR_DECODE:
3757         return "Decoding failed";
3758     case ZOOM_ERROR_CONNECTION_LOST:
3759         return "Connection lost";
3760     case ZOOM_ERROR_INIT:
3761         return "Init rejected";
3762     case ZOOM_ERROR_INTERNAL:
3763         return "Internal failure";
3764     case ZOOM_ERROR_TIMEOUT:
3765         return "Timeout";
3766     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
3767         return "Unsupported protocol";
3768     case ZOOM_ERROR_UNSUPPORTED_QUERY:
3769         return "Unsupported query type";
3770     case ZOOM_ERROR_INVALID_QUERY:
3771         return "Invalid query";
3772     case ZOOM_ERROR_CQL_PARSE:
3773         return "CQL parsing error";
3774     case ZOOM_ERROR_CQL_TRANSFORM:
3775         return "CQL transformation error";
3776     case ZOOM_ERROR_CCL_CONFIG:
3777         return "CCL configuration error";
3778     case ZOOM_ERROR_CCL_PARSE:
3779         return "CCL parsing error";
3780     default:
3781         return diagbib1_str (error);
3782     }
3783 }
3784
3785 ZOOM_API(int)
3786 ZOOM_connection_error_x (ZOOM_connection c, const char **cp,
3787                          const char **addinfo, const char **diagset)
3788 {
3789     int error = c->error;
3790     if (cp)
3791     {
3792         if (!c->diagset || !strcmp(c->diagset, "ZOOM"))
3793             *cp = ZOOM_diag_str(error);
3794         else if (!strcmp(c->diagset, "HTTP"))
3795             *cp = z_HTTP_errmsg(c->error);
3796         else if (!strcmp(c->diagset, "Bib-1"))
3797             *cp = ZOOM_diag_str(error);
3798         else if (!strcmp(c->diagset, "info:srw/diagnostic/1"))
3799             *cp = yaz_diag_srw_str(c->error);
3800         else
3801             *cp = "Unknown error and diagnostic set";
3802     }
3803     if (addinfo)
3804         *addinfo = c->addinfo ? c->addinfo : "";
3805     if (diagset)
3806         *diagset = c->diagset ? c->diagset : "";
3807     return c->error;
3808 }
3809
3810 ZOOM_API(int)
3811 ZOOM_connection_error (ZOOM_connection c, const char **cp,
3812                        const char **addinfo)
3813 {
3814     return ZOOM_connection_error_x(c, cp, addinfo, 0);
3815 }
3816
3817 static int ZOOM_connection_do_io(ZOOM_connection c, int mask)
3818 {
3819     ZOOM_Event event = 0;
3820     int r = cs_look(c->cs);
3821     yaz_log(log_details, "%p ZOOM_connection_do_io mask=%d cs_look=%d",
3822              c, mask, r);
3823
3824     if (r == CS_NONE)
3825     {
3826         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
3827         set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3828         do_close (c);
3829         ZOOM_connection_put_event (c, event);
3830     }
3831     else if (r == CS_CONNECT)
3832     {
3833         int ret;
3834         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
3835
3836         ret = cs_rcvconnect (c->cs);
3837         yaz_log(log_details, "%p ZOOM_connection_do_io "
3838                 "cs_rcvconnect returned %d", c, ret);
3839         if (ret == 1)
3840         {
3841             c->mask = ZOOM_SELECT_EXCEPT;
3842             if (c->cs->io_pending & CS_WANT_WRITE)
3843                 c->mask += ZOOM_SELECT_WRITE;
3844             if (c->cs->io_pending & CS_WANT_READ)
3845                 c->mask += ZOOM_SELECT_READ;
3846             ZOOM_connection_put_event (c, event);
3847         }
3848         else if (ret == 0)
3849         {
3850             ZOOM_connection_put_event (c, event);
3851             get_cert(c);
3852             if (c->proto == PROTO_Z3950)
3853                 ZOOM_connection_send_init(c);
3854             else
3855             {
3856                 /* no init request for SRW .. */
3857                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
3858                 ZOOM_connection_remove_task (c);
3859                 c->mask = 0;
3860                 ZOOM_connection_exec_task (c);
3861             }
3862             c->state = STATE_ESTABLISHED;
3863         }
3864         else
3865         {
3866             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3867             do_close (c);
3868             ZOOM_connection_put_event (c, event);
3869         }
3870     }
3871     else
3872     {
3873         if (mask & ZOOM_SELECT_READ)
3874             do_read (c);
3875         if (c->cs && (mask & ZOOM_SELECT_WRITE))
3876             do_write (c);
3877     }
3878     return 1;
3879 }
3880
3881 ZOOM_API(int)
3882 ZOOM_connection_last_event(ZOOM_connection cs)
3883 {
3884     if (!cs)
3885         return ZOOM_EVENT_NONE;
3886     return cs->last_event;
3887 }
3888
3889 ZOOM_API(int)
3890 ZOOM_event (int no, ZOOM_connection *cs)
3891 {
3892     int timeout = 30;      /* default timeout in seconds */
3893     int timeout_set = 0;   /* whether it was overriden at all */
3894 #if HAVE_SYS_POLL_H
3895     struct pollfd pollfds[1024];
3896     ZOOM_connection poll_cs[1024];
3897 #else
3898     struct timeval tv;
3899     fd_set input, output, except;
3900 #endif
3901     int i, r, nfds;
3902     int max_fd = 0;
3903
3904     yaz_log(log_details, "ZOOM_event no=%d", no);
3905     for (i = 0; i<no; i++)
3906     {
3907         ZOOM_connection c = cs[i];
3908         ZOOM_Event event;
3909         if (c && (event = ZOOM_connection_get_event(c)))
3910         {
3911             ZOOM_Event_destroy (event);
3912             return i+1;
3913         }
3914     }
3915     for (i = 0; i<no; i++)
3916     {
3917         ZOOM_connection c = cs[i];
3918         if (c)
3919         {
3920             ZOOM_Event event;
3921             ZOOM_connection_exec_task (c);
3922             if ((event = ZOOM_connection_get_event(c)))
3923             {
3924                 ZOOM_Event_destroy (event);
3925                 return i+1;
3926             }
3927         }
3928     }
3929 #if HAVE_SYS_POLL_H
3930
3931 #else
3932     FD_ZERO (&input);
3933     FD_ZERO (&output);
3934     FD_ZERO (&except);
3935 #endif
3936     nfds = 0;
3937     for (i = 0; i<no; i++)
3938     {
3939         ZOOM_connection c = cs[i];
3940         int fd, mask;
3941         int this_timeout;
3942
3943         if (!c)
3944             continue;
3945         fd = z3950_connection_socket(c);
3946         mask = z3950_connection_mask(c);
3947
3948         if (fd == -1)
3949             continue;
3950         if (max_fd < fd)
3951             max_fd = fd;
3952
3953         /* -1 is used for indefinite timeout (no timeout), so -2 here. */
3954         this_timeout = ZOOM_options_get_int (c->options, "timeout", -2);
3955         if (this_timeout != -2)
3956         {
3957             /* ensure the minimum timeout is used */
3958             if (!timeout_set)
3959                 timeout = this_timeout;
3960             else if (this_timeout != -1 && this_timeout < timeout)
3961                 timeout = this_timeout;
3962             timeout_set = 1;
3963         }
3964 #if HAVE_SYS_POLL_H
3965         if (mask)
3966         {
3967             short poll_events = 0;
3968
3969             if (mask & ZOOM_SELECT_READ)
3970                 poll_events += POLLIN;
3971             if (mask & ZOOM_SELECT_WRITE)
3972                 poll_events += POLLOUT;
3973             if (mask & ZOOM_SELECT_EXCEPT)
3974                 poll_events += POLLERR;
3975             pollfds[nfds].fd = fd;
3976             pollfds[nfds].events = poll_events;
3977             pollfds[nfds].revents = 0;
3978             poll_cs[nfds] = c;
3979             nfds++;
3980         }
3981 #else
3982         if (mask & ZOOM_SELECT_READ)
3983         {
3984             FD_SET (fd, &input);
3985             nfds++;
3986         }
3987         if (mask & ZOOM_SELECT_WRITE)
3988         {
3989             FD_SET (fd, &output);
3990             nfds++;
3991         }
3992         if (mask & ZOOM_SELECT_EXCEPT)
3993         {
3994             FD_SET (fd, &except);
3995             nfds++;
3996         }
3997 #endif
3998     }
3999     if (!nfds)
4000         return 0;
4001
4002 #if HAVE_SYS_POLL_H
4003     r = poll (pollfds, nfds, (timeout == -1 ? -1 : timeout * 1000));
4004     for (i = 0; i<nfds; i++)
4005     {
4006         ZOOM_connection c = poll_cs[i];
4007         if (r && c->mask)
4008         {
4009             int mask = 0;
4010             if (pollfds[i].revents & POLLIN)
4011                 mask += ZOOM_SELECT_READ;
4012             if (pollfds[i].revents & POLLOUT)
4013                 mask += ZOOM_SELECT_WRITE;
4014             if (pollfds[i].revents & POLLERR)
4015                 mask += ZOOM_SELECT_EXCEPT;
4016             if (mask)
4017                 ZOOM_connection_do_io(c, mask);
4018         }
4019         else if (r == 0 && c->mask)
4020         {
4021             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
4022             /* timeout and this connection was waiting */
4023             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
4024             do_close (c);
4025             ZOOM_connection_put_event(c, event);
4026         }
4027     }
4028 #else
4029     tv.tv_sec = timeout;
4030     tv.tv_usec = 0;
4031     r = select (max_fd+1, &input, &output, &except, (timeout == -1 ? 0 : &tv));
4032     for (i = 0; i<no; i++)
4033     {
4034         ZOOM_connection c = cs[i];
4035         int fd, mask;
4036
4037         if (!c)
4038             continue;
4039         fd = z3950_connection_socket(c);
4040         mask = 0;
4041         if (r && c->mask)
4042         {
4043             /* no timeout and real socket */
4044             if (FD_ISSET(fd, &input))
4045                 mask += ZOOM_SELECT_READ;
4046             if (FD_ISSET(fd, &output))
4047                 mask += ZOOM_SELECT_WRITE;
4048             if (FD_ISSET(fd, &except))
4049                 mask += ZOOM_SELECT_EXCEPT;
4050             if (mask)
4051                 ZOOM_connection_do_io(c, mask);
4052         }
4053         if (r == 0 && c->mask)
4054         {
4055             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
4056             /* timeout and this connection was waiting */
4057             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
4058             do_close (c);
4059             ZOOM_connection_put_event(c, event);
4060         }
4061     }
4062 #endif
4063     for (i = 0; i<no; i++)
4064     {
4065         ZOOM_connection c = cs[i];
4066         ZOOM_Event event;
4067         if (c && (event = ZOOM_connection_get_event(c)))
4068         {
4069             ZOOM_Event_destroy (event);
4070             return i+1;
4071         }
4072     }
4073     return 0;
4074 }
4075
4076
4077 /*
4078  * Returns an xmalloc()d string containing RPN that corresponds to the
4079  * CQL passed in.  On error, sets the Connection object's error state
4080  * and returns a null pointer.
4081  * ### We could cache CQL parser and/or transformer in Connection.
4082  */
4083 static char *cql2pqf(ZOOM_connection c, const char *cql)
4084 {
4085     CQL_parser parser;
4086     int error;
4087     struct cql_node *node;
4088     const char *cqlfile;
4089     static cql_transform_t trans;
4090     char pqfbuf[512];
4091
4092     parser = cql_parser_create();
4093     if ((error = cql_parser_string(parser, cql)) != 0) {
4094         cql_parser_destroy(parser);
4095         set_ZOOM_error(c, ZOOM_ERROR_CQL_PARSE, cql);
4096         return 0;
4097     }
4098
4099     node = cql_parser_result(parser);
4100     /* ### Do not call cql_parser_destroy() yet: it destroys `node'! */
4101
4102     cqlfile = ZOOM_connection_option_get(c, "cqlfile");
4103     if (cqlfile == 0) {
4104         cql_parser_destroy(parser);
4105         cql_node_destroy(node);
4106         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, "no CQL transform file");
4107         return 0;
4108     }
4109
4110     if ((trans = cql_transform_open_fname(cqlfile)) == 0) {
4111         char buf[512];
4112         cql_parser_destroy(parser);
4113         cql_node_destroy(node);
4114         sprintf(buf, "can't open CQL transform file '%.200s': %.200s",
4115                 cqlfile, strerror(errno));
4116         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4117         return 0;
4118     }
4119
4120     error = cql_transform_buf(trans, node, pqfbuf, sizeof pqfbuf);
4121     cql_parser_destroy(parser);
4122     cql_node_destroy(node);
4123     if (error != 0) {
4124         char buf[512];
4125         const char *addinfo;
4126         error = cql_transform_error(trans, &addinfo);
4127         cql_transform_close(trans);
4128         sprintf(buf, "%.200s (addinfo=%.200s)", cql_strerror(error), addinfo);
4129         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4130         return 0;
4131     }
4132
4133     cql_transform_close(trans);
4134     return xstrdup(pqfbuf);
4135 }
4136
4137 /*
4138  * Local variables:
4139  * c-basic-offset: 4
4140  * indent-tabs-mode: nil
4141  * End:
4142  * vim: shiftwidth=4 tabstop=8 expandtab
4143  */
4144