src/zoom-c.c

   1 /*
   2  * Copyright (C) 1995-2007, Index Data ApS
   3  * See the file LICENSE for details.
   4  *
   5  * $Id: zoom-c.c,v 1.131 2007-05-23 11:54:47 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 #include <yaz/query-charset.h>
  30 #include <yaz/copy_types.h>
  31
  32 static int log_api = 0;
  33 static int log_details = 0;
  34
  35 typedef enum {
  36     zoom_pending,
  37     zoom_complete
  38 } zoom_ret;
  39
  40 static void resultset_destroy(ZOOM_resultset r);
  41 static zoom_ret ZOOM_connection_send_init(ZOOM_connection c);
  42 static zoom_ret do_write_ex(ZOOM_connection c, char *buf_out, int len_out);
  43 static char *cql2pqf(ZOOM_connection c, const char *cql);
  44
  45
  46 /*
  47  * This wrapper is just for logging failed lookups.  It would be nicer
  48  * if it could cause failure when a lookup fails, but that's hard.
  49  */
  50 static Odr_oid *zoom_yaz_str_to_z3950oid(ZOOM_connection c,
  51                                      int oid_class, const char *str) {
  52     Odr_oid *res = yaz_string_to_oid_odr(yaz_oid_std(), oid_class, str,
  53                                      c->odr_out);
  54     if (res == 0)
  55         yaz_log(YLOG_WARN, "%p OID lookup (%d, '%s') failed",
  56                 c, (int) oid_class, str);
  57     return res;
  58 }
  59
  60
  61 static void initlog(void)
  62 {
  63     static int log_level_initialized = 0;
  64     if (!log_level_initialized)
  65     {
  66         log_api = yaz_log_module_level("zoom");
  67         log_details = yaz_log_module_level("zoomdetails");
  68         log_level_initialized = 1;
  69     }
  70 }
  71
  72 static ZOOM_Event ZOOM_Event_create(int kind)
  73 {
  74     ZOOM_Event event = (ZOOM_Event) xmalloc(sizeof(*event));
  75     event->kind = kind;
  76     event->next = 0;
  77     event->prev = 0;
  78     yaz_log(log_details, "ZOOM_Event_create(kind=%d)", kind);
  79     return event;
  80 }
  81
  82 static void ZOOM_Event_destroy(ZOOM_Event event)
  83 {
  84     xfree(event);
  85 }
  86
  87 static void ZOOM_connection_put_event(ZOOM_connection c, ZOOM_Event event)
  88 {
  89     if (c->m_queue_back)
  90     {
  91         c->m_queue_back->prev = event;
  92         assert(c->m_queue_front);
  93     }
  94     else
  95     {
  96         assert(!c->m_queue_front);
  97         c->m_queue_front = event;
  98     }
  99     event->next = c->m_queue_back;
 100     event->prev = 0;
 101     c->m_queue_back = event;
 102 }
 103
 104 static ZOOM_Event ZOOM_connection_get_event(ZOOM_connection c)
 105 {
 106     ZOOM_Event event = c->m_queue_front;
 107     if (!event)
 108     {
 109         c->last_event = ZOOM_EVENT_NONE;
 110         return 0;
 111     }
 112     assert(c->m_queue_back);
 113     c->m_queue_front = event->prev;
 114     if (c->m_queue_front)
 115     {
 116         assert(c->m_queue_back);
 117         c->m_queue_front->next = 0;
 118     }
 119     else
 120         c->m_queue_back = 0;
 121     c->last_event = event->kind;
 122     return event;
 123 }
 124
 125 static void ZOOM_connection_remove_events(ZOOM_connection c)
 126 {
 127     ZOOM_Event event;
 128     while ((event = ZOOM_connection_get_event(c)))
 129         ZOOM_Event_destroy(event);
 130 }
 131
 132 ZOOM_API(int) ZOOM_connection_peek_event(ZOOM_connection c)
 133 {
 134     ZOOM_Event event = c->m_queue_front;
 135
 136     return event ? event->kind : ZOOM_EVENT_NONE;
 137 }
 138
 139 void ZOOM_connection_remove_tasks(ZOOM_connection c);
 140
 141 static void set_dset_error(ZOOM_connection c, int error,
 142                            const char *dset,
 143                            const char *addinfo, const char *addinfo2)
 144 {
 145     char *cp;
 146
 147     xfree(c->addinfo);
 148     c->addinfo = 0;
 149     c->error = error;
 150     if (!c->diagset || strcmp(dset, c->diagset))
 151     {
 152         xfree(c->diagset);
 153         c->diagset = xstrdup(dset);
 154         /* remove integer part from SRW diagset .. */
 155         if ((cp = strrchr(c->diagset, '/')))
 156             *cp = '\0';
 157     }
 158     if (addinfo && addinfo2)
 159     {
 160         c->addinfo = (char*) xmalloc(strlen(addinfo) + strlen(addinfo2) + 2);
 161         strcpy(c->addinfo, addinfo);
 162         strcat(c->addinfo, addinfo2);
 163     }
 164     else if (addinfo)
 165         c->addinfo = xstrdup(addinfo);
 166     if (error != ZOOM_ERROR_NONE)
 167     {
 168         yaz_log(log_api, "%p set_dset_error %s %s:%d %s %s",
 169                 c, c->host_port ? c->host_port : "<>", dset, error,
 170                 addinfo ? addinfo : "",
 171                 addinfo2 ? addinfo2 : "");
 172         ZOOM_connection_remove_tasks(c);
 173     }
 174 }
 175
 176 #if YAZ_HAVE_XML2
 177 static void set_HTTP_error(ZOOM_connection c, int error,
 178                            const char *addinfo, const char *addinfo2)
 179 {
 180     set_dset_error(c, error, "HTTP", addinfo, addinfo2);
 181 }
 182 #endif
 183
 184
 185 static void set_ZOOM_error(ZOOM_connection c, int error,
 186                            const char *addinfo)
 187 {
 188     set_dset_error(c, error, "ZOOM", addinfo, 0);
 189 }
 190
 191 static void clear_error(ZOOM_connection c)
 192 {
 193     /*
 194      * If an error is tied to an operation then it's ok to clear: for
 195      * example, a diagnostic returned from a search is cleared by a
 196      * subsequent search.  However, problems such as Connection Lost
 197      * or Init Refused are not cleared, because they are not
 198      * recoverable: doing another search doesn't help.
 199      */
 200
 201     ZOOM_connection_remove_events(c);
 202     switch (c->error)
 203     {
 204     case ZOOM_ERROR_CONNECT:
 205     case ZOOM_ERROR_MEMORY:
 206     case ZOOM_ERROR_DECODE:
 207     case ZOOM_ERROR_CONNECTION_LOST:
 208     case ZOOM_ERROR_INIT:
 209     case ZOOM_ERROR_INTERNAL:
 210     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
 211         break;
 212     default:
 213         set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 214     }
 215 }
 216
 217 void ZOOM_connection_show_task(ZOOM_task task)
 218 {
 219     switch(task->which)
 220     {
 221     case ZOOM_TASK_SEARCH:
 222         yaz_log(YLOG_LOG, "search p=%p", task);
 223         break;
 224     case ZOOM_TASK_RETRIEVE:
 225         yaz_log(YLOG_LOG, "retrieve p=%p", task);
 226         break;
 227     case ZOOM_TASK_CONNECT:
 228         yaz_log(YLOG_LOG, "connect p=%p", task);
 229         break;
 230     case ZOOM_TASK_SCAN:
 231         yaz_log(YLOG_LOG, "scant p=%p", task);
 232         break;
 233     }
 234 }
 235
 236 void ZOOM_connection_show_tasks(ZOOM_connection c)
 237 {
 238     ZOOM_task task;
 239     yaz_log(YLOG_LOG, "connection p=%p tasks", c);
 240     for (task = c->tasks; task; task = task->next)
 241         ZOOM_connection_show_task(task);
 242 }
 243
 244 ZOOM_task ZOOM_connection_add_task(ZOOM_connection c, int which)
 245 {
 246     ZOOM_task *taskp = &c->tasks;
 247     while (*taskp)
 248         taskp = &(*taskp)->next;
 249     *taskp = (ZOOM_task) xmalloc(sizeof(**taskp));
 250     (*taskp)->running = 0;
 251     (*taskp)->which = which;
 252     (*taskp)->next = 0;
 253     clear_error(c);
 254     return *taskp;
 255 }
 256
 257 ZOOM_API(int) ZOOM_connection_is_idle(ZOOM_connection c)
 258 {
 259     return c->tasks ? 0 : 1;
 260 }
 261
 262 ZOOM_task ZOOM_connection_insert_task(ZOOM_connection c, int which)
 263 {
 264     ZOOM_task task = (ZOOM_task) xmalloc(sizeof(*task));
 265
 266     task->next = c->tasks;
 267     c->tasks = task;
 268
 269     task->running = 0;
 270     task->which = which;
 271     clear_error(c);
 272     return task;
 273 }
 274
 275 void ZOOM_connection_remove_task(ZOOM_connection c)
 276 {
 277     ZOOM_task task = c->tasks;
 278
 279     if (task)
 280     {
 281         c->tasks = task->next;
 282         switch (task->which)
 283         {
 284         case ZOOM_TASK_SEARCH:
 285             resultset_destroy(task->u.search.resultset);
 286             xfree(task->u.search.syntax);
 287             xfree(task->u.search.elementSetName);
 288             break;
 289         case ZOOM_TASK_RETRIEVE:
 290             resultset_destroy(task->u.retrieve.resultset);
 291             xfree(task->u.retrieve.syntax);
 292             xfree(task->u.retrieve.elementSetName);
 293             break;
 294         case ZOOM_TASK_CONNECT:
 295             break;
 296         case ZOOM_TASK_SCAN:
 297             ZOOM_scanset_destroy(task->u.scan.scan);
 298             break;
 299         case ZOOM_TASK_PACKAGE:
 300             ZOOM_package_destroy(task->u.package);
 301             break;
 302         case ZOOM_TASK_SORT:
 303             resultset_destroy(task->u.sort.resultset);
 304             ZOOM_query_destroy(task->u.sort.q);
 305             break;
 306         default:
 307             assert(0);
 308         }
 309         xfree(task);
 310
 311         if (!c->tasks)
 312         {
 313             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_END);
 314             ZOOM_connection_put_event(c, event);
 315         }
 316     }
 317 }
 318
 319 static int ZOOM_connection_exec_task(ZOOM_connection c);
 320
 321 void ZOOM_connection_remove_tasks(ZOOM_connection c)
 322 {
 323     while (c->tasks)
 324         ZOOM_connection_remove_task(c);
 325 }
 326
 327 static ZOOM_record record_cache_lookup(ZOOM_resultset r, int pos,
 328                                        const char *syntax,
 329                                        const char *elementSetName);
 330
 331 ZOOM_API(ZOOM_connection)
 332     ZOOM_connection_create(ZOOM_options options)
 333 {
 334     ZOOM_connection c = (ZOOM_connection) xmalloc(sizeof(*c));
 335
 336     initlog();
 337
 338     yaz_log(log_api, "%p ZOOM_connection_create", c);
 339
 340     c->proto = PROTO_Z3950;
 341     c->cs = 0;
 342     ZOOM_connection_set_mask(c, 0);
 343     c->reconnect_ok = 0;
 344     c->state = STATE_IDLE;
 345     c->addinfo = 0;
 346     c->diagset = 0;
 347     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 348     c->buf_in = 0;
 349     c->len_in = 0;
 350     c->buf_out = 0;
 351     c->len_out = 0;
 352     c->resultsets = 0;
 353
 354     c->options = ZOOM_options_create_with_parent(options);
 355
 356     c->host_port = 0;
 357     c->path = 0;
 358     c->proxy = 0;
 359
 360     c->charset = c->lang = 0;
 361
 362     c->cookie_out = 0;
 363     c->cookie_in = 0;
 364     c->client_IP = 0;
 365     c->tasks = 0;
 366
 367     c->user = 0;
 368     c->group = 0;
 369     c->password = 0;
 370
 371     c->maximum_record_size = 0;
 372     c->preferred_message_size = 0;
 373
 374     c->odr_in = odr_createmem(ODR_DECODE);
 375     c->odr_out = odr_createmem(ODR_ENCODE);
 376
 377     c->async = 0;
 378     c->support_named_resultsets = 0;
 379     c->last_event = ZOOM_EVENT_NONE;
 380
 381     c->m_queue_front = 0;
 382     c->m_queue_back = 0;
 383     return c;
 384 }
 385
 386
 387 /* set database names. Take local databases (if set); otherwise
 388    take databases given in ZURL (if set); otherwise use Default */
 389 static char **set_DatabaseNames(ZOOM_connection con, ZOOM_options options,
 390                                 int *num, ODR odr)
 391 {
 392     char **databaseNames;
 393     const char *cp = ZOOM_options_get(options, "databaseName");
 394
 395     if ((!cp || !*cp) && con->host_port)
 396     {
 397         if (strncmp(con->host_port, "unix:", 5) == 0)
 398             cp = strchr(con->host_port+5, ':');
 399         else
 400             cp = strchr(con->host_port, '/');
 401         if (cp)
 402             cp++;
 403     }
 404     if (!cp)
 405         cp = "Default";
 406     nmem_strsplit(odr_getmem(odr), "+", cp,  &databaseNames, num);
 407     return databaseNames;
 408 }
 409
 410 ZOOM_API(ZOOM_connection)
 411     ZOOM_connection_new(const char *host, int portnum)
 412 {
 413     ZOOM_connection c = ZOOM_connection_create(0);
 414
 415     ZOOM_connection_connect(c, host, portnum);
 416     return c;
 417 }
 418
 419 static zoom_sru_mode get_sru_mode_from_string(const char *s)
 420 {
 421     if (!s || !*s)
 422         return zoom_sru_soap;
 423     if (!yaz_matchstr(s, "soap"))
 424         return zoom_sru_soap;
 425     else if (!yaz_matchstr(s, "get"))
 426         return zoom_sru_get;
 427     else if (!yaz_matchstr(s, "post"))
 428         return zoom_sru_post;
 429     return zoom_sru_error;
 430 }
 431
 432 ZOOM_API(void)
 433     ZOOM_connection_connect(ZOOM_connection c,
 434                             const char *host, int portnum)
 435 {
 436     const char *val;
 437     ZOOM_task task;
 438
 439     initlog();
 440
 441     yaz_log(log_api, "%p ZOOM_connection_connect host=%s portnum=%d",
 442             c, host ? host : "null", portnum);
 443
 444     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 445     ZOOM_connection_remove_tasks(c);
 446
 447     if (c->cs)
 448     {
 449         yaz_log(log_details, "%p ZOOM_connection_connect reconnect ok", c);
 450         c->reconnect_ok = 1;
 451         return;
 452     }
 453     yaz_log(log_details, "%p ZOOM_connection_connect connect", c);
 454     xfree(c->proxy);
 455     c->proxy = 0;
 456     val = ZOOM_options_get(c->options, "proxy");
 457     if (val && *val)
 458     {
 459         yaz_log(log_details, "%p ZOOM_connection_connect proxy=%s", c, val);
 460         c->proxy = xstrdup(val);
 461     }
 462
 463     xfree(c->charset);
 464     c->charset = 0;
 465     val = ZOOM_options_get(c->options, "charset");
 466     if (val && *val)
 467     {
 468         yaz_log(log_details, "%p ZOOM_connection_connect charset=%s", c, val);
 469         c->charset = xstrdup(val);
 470     }
 471
 472     xfree(c->lang);
 473     val = ZOOM_options_get(c->options, "lang");
 474     if (val && *val)
 475     {
 476         yaz_log(log_details, "%p ZOOM_connection_connect lang=%s", c, val);
 477         c->lang = xstrdup(val);
 478     }
 479     else
 480         c->lang = 0;
 481
 482     if (host)
 483     {
 484         xfree(c->host_port);
 485         if (portnum)
 486         {
 487             char hostn[128];
 488             sprintf(hostn, "%.80s:%d", host, portnum);
 489             c->host_port = xstrdup(hostn);
 490         }
 491         else
 492             c->host_port = xstrdup(host);
 493     }
 494
 495     {
 496         /*
 497          * If the "<scheme>:" part of the host string is preceded by one
 498          * or more comma-separated <name>=<value> pairs, these are taken
 499          * to be options to be set on the connection object.  Among other
 500          * applications, this facility can be used to embed authentication
 501          * in a host string:
 502          *          user=admin,password=secret,tcp:localhost:9999
 503          */
 504         char *remainder = c->host_port;
 505         char *pcolon = strchr(remainder, ':');
 506         char *pcomma;
 507         char *pequals;
 508         while ((pcomma = strchr(remainder, ',')) != 0 &&
 509                (pcolon == 0 || pcomma < pcolon)) {
 510             *pcomma = '\0';
 511             if ((pequals = strchr(remainder, '=')) != 0) {
 512                 *pequals = '\0';
 513                 /*printf("# setting '%s'='%s'\n", remainder, pequals+1);*/
 514                 ZOOM_connection_option_set(c, remainder, pequals+1);
 515             }
 516             remainder = pcomma+1;
 517         }
 518
 519         if (remainder != c->host_port) {
 520             xfree(c->host_port);
 521             c->host_port = xstrdup(remainder);
 522             /*printf("# reset hp='%s'\n", remainder);*/
 523         }
 524     }
 525
 526     val = ZOOM_options_get(c->options, "sru");
 527     c->sru_mode = get_sru_mode_from_string(val);
 528
 529     ZOOM_options_set(c->options, "host", c->host_port);
 530
 531     xfree(c->cookie_out);
 532     c->cookie_out = 0;
 533     val = ZOOM_options_get(c->options, "cookie");
 534     if (val && *val)
 535     {
 536         yaz_log(log_details, "%p ZOOM_connection_connect cookie=%s", c, val);
 537         c->cookie_out = xstrdup(val);
 538     }
 539
 540     xfree(c->client_IP);
 541     c->client_IP = 0;
 542     val = ZOOM_options_get(c->options, "clientIP");
 543     if (val && *val)
 544     {
 545         yaz_log(log_details, "%p ZOOM_connection_connect clientIP=%s",
 546                 c, val);
 547         c->client_IP = xstrdup(val);
 548     }
 549
 550     xfree(c->group);
 551     c->group = 0;
 552     val = ZOOM_options_get(c->options, "group");
 553     if (val && *val)
 554         c->group = xstrdup(val);
 555
 556     xfree(c->user);
 557     c->user = 0;
 558     val = ZOOM_options_get(c->options, "user");
 559     if (val && *val)
 560         c->user = xstrdup(val);
 561
 562     xfree(c->password);
 563     c->password = 0;
 564     val = ZOOM_options_get(c->options, "password");
 565     if (!val)
 566         val = ZOOM_options_get(c->options, "pass");
 567
 568     if (val && *val)
 569         c->password = xstrdup(val);
 570
 571     c->maximum_record_size =
 572         ZOOM_options_get_int(c->options, "maximumRecordSize", 1024*1024);
 573     c->preferred_message_size =
 574         ZOOM_options_get_int(c->options, "preferredMessageSize", 1024*1024);
 575
 576     c->async = ZOOM_options_get_bool(c->options, "async", 0);
 577     yaz_log(log_details, "%p ZOOM_connection_connect async=%d", c, c->async);
 578
 579     task = ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 580
 581     if (!c->async)
 582     {
 583         while (ZOOM_event(1, &c))
 584             ;
 585     }
 586 }
 587
 588 ZOOM_API(ZOOM_query)
 589     ZOOM_query_create(void)
 590 {
 591     ZOOM_query s = (ZOOM_query) xmalloc(sizeof(*s));
 592
 593     yaz_log(log_details, "%p ZOOM_query_create", s);
 594     s->refcount = 1;
 595     s->z_query = 0;
 596     s->sort_spec = 0;
 597     s->odr = odr_createmem(ODR_ENCODE);
 598     s->query_string = 0;
 599
 600     return s;
 601 }
 602
 603 ZOOM_API(void)
 604     ZOOM_query_destroy(ZOOM_query s)
 605 {
 606     if (!s)
 607         return;
 608
 609     (s->refcount)--;
 610     yaz_log(log_details, "%p ZOOM_query_destroy count=%d", s, s->refcount);
 611     if (s->refcount == 0)
 612     {
 613         odr_destroy(s->odr);
 614         xfree(s);
 615     }
 616 }
 617
 618 ZOOM_API(int)
 619     ZOOM_query_prefix(ZOOM_query s, const char *str)
 620 {
 621     s->query_string = odr_strdup(s->odr, str);
 622     s->z_query = (Z_Query *) odr_malloc(s->odr, sizeof(*s->z_query));
 623     s->z_query->which = Z_Query_type_1;
 624     s->z_query->u.type_1 =  p_query_rpn(s->odr, str);
 625     if (!s->z_query->u.type_1)
 626     {
 627         yaz_log(log_details, "%p ZOOM_query_prefix str=%s failed", s, str);
 628         s->z_query = 0;
 629         return -1;
 630     }
 631     yaz_log(log_details, "%p ZOOM_query_prefix str=%s", s, str);
 632     return 0;
 633 }
 634
 635 ZOOM_API(int)
 636     ZOOM_query_cql(ZOOM_query s, const char *str)
 637 {
 638     Z_External *ext;
 639
 640     s->query_string = odr_strdup(s->odr, str);
 641
 642     ext = (Z_External *) odr_malloc(s->odr, sizeof(*ext));
 643     ext->direct_reference = odr_getoidbystr(s->odr, "1.2.840.10003.16.2");
 644     ext->indirect_reference = 0;
 645     ext->descriptor = 0;
 646     ext->which = Z_External_CQL;
 647     ext->u.cql = s->query_string;
 648
 649     s->z_query = (Z_Query *) odr_malloc(s->odr, sizeof(*s->z_query));
 650     s->z_query->which = Z_Query_type_104;
 651     s->z_query->u.type_104 =  ext;
 652
 653     yaz_log(log_details, "%p ZOOM_query_cql str=%s", s, str);
 654
 655     return 0;
 656 }
 657
 658 /*
 659  * Translate the CQL string client-side into RPN which is passed to
 660  * the server.  This is useful for server's that don't themselves
 661  * support CQL, for which ZOOM_query_cql() is useless.  `conn' is used
 662  * only as a place to stash diagnostics if compilation fails; if this
 663  * information is not needed, a null pointer may be used.
 664  */
 665 ZOOM_API(int)
 666     ZOOM_query_cql2rpn(ZOOM_query s, const char *str, ZOOM_connection conn)
 667 {
 668     char *rpn;
 669     int ret;
 670     ZOOM_connection freeme = 0;
 671
 672     yaz_log(log_details, "%p ZOOM_query_cql2rpn str=%s conn=%p", s, str, conn);
 673     if (conn == 0)
 674         conn = freeme = ZOOM_connection_create(0);
 675
 676     rpn = cql2pqf(conn, str);
 677     if (freeme != 0)
 678         ZOOM_connection_destroy(freeme);
 679     if (rpn == 0)
 680         return -1;
 681
 682     ret = ZOOM_query_prefix(s, rpn);
 683     xfree(rpn);
 684     return ret;
 685 }
 686
 687 /*
 688  * Analogous in every way to ZOOM_query_cql2rpn(), except that there
 689  * is no analogous ZOOM_query_ccl() that just sends uninterpreted CCL
 690  * to the server, as the YAZ GFS doesn't know how to handle this.
 691  */
 692 ZOOM_API(int)
 693     ZOOM_query_ccl2rpn(ZOOM_query s, const char *str, const char *config,
 694                        int *ccl_error, const char **error_string,
 695                        int *error_pos)
 696 {
 697     int ret;
 698     struct ccl_rpn_node *rpn;
 699     CCL_bibset bibset = ccl_qual_mk();
 700
 701     if (config)
 702         ccl_qual_buf(bibset, config);
 703
 704     rpn = ccl_find_str(bibset, str, ccl_error, error_pos);
 705     if (!rpn)
 706     {
 707         *error_string = ccl_err_msg(*ccl_error);
 708         ret = -1;
 709     }
 710     else
 711     {
 712         WRBUF wr = wrbuf_alloc();
 713         ccl_pquery(wr, rpn);
 714         ccl_rpn_delete(rpn);
 715         ret = ZOOM_query_prefix(s, wrbuf_cstr(wr));
 716         wrbuf_destroy(wr);
 717     }
 718     ccl_qual_rm(&bibset);
 719     return ret;
 720 }
 721
 722 ZOOM_API(int)
 723     ZOOM_query_sortby(ZOOM_query s, const char *criteria)
 724 {
 725     s->sort_spec = yaz_sort_spec(s->odr, criteria);
 726     if (!s->sort_spec)
 727     {
 728         yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s failed",
 729                 s, criteria);
 730         return -1;
 731     }
 732     yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s", s, criteria);
 733     return 0;
 734 }
 735
 736 static zoom_ret do_write(ZOOM_connection c);
 737
 738 ZOOM_API(void)
 739     ZOOM_connection_destroy(ZOOM_connection c)
 740 {
 741     ZOOM_resultset r;
 742     if (!c)
 743         return;
 744     yaz_log(log_api, "%p ZOOM_connection_destroy", c);
 745     if (c->cs)
 746         cs_close(c->cs);
 747     for (r = c->resultsets; r; r = r->next)
 748         r->connection = 0;
 749
 750     xfree(c->buf_in);
 751     xfree(c->addinfo);
 752     xfree(c->diagset);
 753     odr_destroy(c->odr_in);
 754     odr_destroy(c->odr_out);
 755     ZOOM_options_destroy(c->options);
 756     ZOOM_connection_remove_tasks(c);
 757     ZOOM_connection_remove_events(c);
 758     xfree(c->host_port);
 759     xfree(c->path);
 760     xfree(c->proxy);
 761     xfree(c->charset);
 762     xfree(c->lang);
 763     xfree(c->cookie_out);
 764     xfree(c->cookie_in);
 765     xfree(c->client_IP);
 766     xfree(c->user);
 767     xfree(c->group);
 768     xfree(c->password);
 769     xfree(c);
 770 }
 771
 772 void ZOOM_resultset_addref(ZOOM_resultset r)
 773 {
 774     if (r)
 775     {
 776         (r->refcount)++;
 777         yaz_log(log_details, "%p ZOOM_resultset_addref count=%d",
 778                 r, r->refcount);
 779     }
 780 }
 781
 782 ZOOM_resultset ZOOM_resultset_create(void)
 783 {
 784     int i;
 785     ZOOM_resultset r = (ZOOM_resultset) xmalloc(sizeof(*r));
 786
 787     initlog();
 788
 789     yaz_log(log_details, "%p ZOOM_resultset_create", r);
 790     r->refcount = 1;
 791     r->size = 0;
 792     r->odr = odr_createmem(ODR_ENCODE);
 793     r->piggyback = 1;
 794     r->setname = 0;
 795     r->schema = 0;
 796     r->step = 0;
 797     for (i = 0; i<RECORD_HASH_SIZE; i++)
 798         r->record_hash[i] = 0;
 799     r->r_sort_spec = 0;
 800     r->query = 0;
 801     r->connection = 0;
 802     r->next = 0;
 803     r->databaseNames = 0;
 804     r->num_databaseNames = 0;
 805     r->rpn_iconv = 0;
 806     return r;
 807 }
 808
 809 ZOOM_API(ZOOM_resultset)
 810     ZOOM_connection_search_pqf(ZOOM_connection c, const char *q)
 811 {
 812     ZOOM_resultset r;
 813     ZOOM_query s = ZOOM_query_create();
 814
 815     ZOOM_query_prefix(s, q);
 816
 817     r = ZOOM_connection_search(c, s);
 818     ZOOM_query_destroy(s);
 819     return r;
 820 }
 821
 822 ZOOM_API(ZOOM_resultset)
 823     ZOOM_connection_search(ZOOM_connection c, ZOOM_query q)
 824 {
 825     ZOOM_resultset r = ZOOM_resultset_create();
 826     ZOOM_task task;
 827     const char *cp;
 828     int start, count;
 829     const char *syntax, *elementSetName;
 830
 831     yaz_log(log_api, "%p ZOOM_connection_search set %p query %p", c, r, q);
 832     r->r_sort_spec = q->sort_spec;
 833     r->query = q;
 834
 835     r->options = ZOOM_options_create_with_parent(c->options);
 836
 837     {
 838         const char *cp = ZOOM_options_get(r->options, "rpnCharset");
 839         if (cp)
 840             r->rpn_iconv = yaz_iconv_open(cp, "UTF-8");
 841     }
 842
 843
 844     start = ZOOM_options_get_int(r->options, "start", 0);
 845     count = ZOOM_options_get_int(r->options, "count", 0);
 846     {
 847         /* If "presentChunk" is defined use that; otherwise "step" */
 848         const char *cp = ZOOM_options_get(r->options, "presentChunk");
 849         r->step = ZOOM_options_get_int(r->options,
 850                                        (cp != 0 ? "presentChunk": "step"), 0);
 851     }
 852     r->piggyback = ZOOM_options_get_bool(r->options, "piggyback", 1);
 853     cp = ZOOM_options_get(r->options, "setname");
 854     if (cp)
 855         r->setname = xstrdup(cp);
 856     cp = ZOOM_options_get(r->options, "schema");
 857     if (cp)
 858         r->schema = xstrdup(cp);
 859
 860     r->databaseNames = set_DatabaseNames(c, c->options, &r->num_databaseNames,
 861                                          r->odr);
 862
 863     r->connection = c;
 864
 865     r->next = c->resultsets;
 866     c->resultsets = r;
 867
 868
 869
 870     if (c->host_port && c->proto == PROTO_HTTP)
 871     {
 872         if (!c->cs)
 873         {
 874             yaz_log(log_details, "ZOOM_connection_search: no comstack");
 875             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 876         }
 877         else
 878         {
 879             yaz_log(log_details, "ZOOM_connection_search: reconnect");
 880             c->reconnect_ok = 1;
 881         }
 882     }
 883
 884     task = ZOOM_connection_add_task(c, ZOOM_TASK_SEARCH);
 885     task->u.search.resultset = r;
 886     task->u.search.start = start;
 887     task->u.search.count = count;
 888
 889     syntax = ZOOM_options_get(r->options, "preferredRecordSyntax");
 890     task->u.search.syntax = syntax ? xstrdup(syntax) : 0;
 891     elementSetName = ZOOM_options_get(r->options, "elementSetName");
 892     task->u.search.elementSetName = elementSetName
 893         ? xstrdup(elementSetName) : 0;
 894
 895     ZOOM_resultset_addref(r);
 896
 897     (q->refcount)++;
 898
 899     if (!c->async)
 900     {
 901         while (ZOOM_event(1, &c))
 902             ;
 903     }
 904     return r;
 905 }
 906
 907 ZOOM_API(void)
 908     ZOOM_resultset_sort(ZOOM_resultset r,
 909                          const char *sort_type, const char *sort_spec)
 910 {
 911     (void) ZOOM_resultset_sort1(r, sort_type, sort_spec);
 912 }
 913
 914 ZOOM_API(int)
 915     ZOOM_resultset_sort1(ZOOM_resultset r,
 916                          const char *sort_type, const char *sort_spec)
 917 {
 918     ZOOM_connection c = r->connection;
 919     ZOOM_task task;
 920     ZOOM_query newq;
 921
 922     newq = ZOOM_query_create();
 923     if (ZOOM_query_sortby(newq, sort_spec) < 0)
 924         return -1;
 925
 926     yaz_log(log_api, "%p ZOOM_resultset_sort r=%p sort_type=%s sort_spec=%s",
 927             r, r, sort_type, sort_spec);
 928     if (!c)
 929         return 0;
 930
 931     if (c->host_port && c->proto == PROTO_HTTP)
 932     {
 933         if (!c->cs)
 934         {
 935             yaz_log(log_details, "%p ZOOM_resultset_sort: no comstack", r);
 936             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 937         }
 938         else
 939         {
 940             yaz_log(log_details, "%p ZOOM_resultset_sort: prepare reconnect",
 941                     r);
 942             c->reconnect_ok = 1;
 943         }
 944     }
 945
 946     ZOOM_resultset_cache_reset(r);
 947     task = ZOOM_connection_add_task(c, ZOOM_TASK_SORT);
 948     task->u.sort.resultset = r;
 949     task->u.sort.q = newq;
 950
 951     ZOOM_resultset_addref(r);
 952
 953     if (!c->async)
 954     {
 955         while (ZOOM_event(1, &c))
 956             ;
 957     }
 958
 959     return 0;
 960 }
 961
 962 ZOOM_API(void)
 963     ZOOM_resultset_cache_reset(ZOOM_resultset r)
 964 {
 965     int i;
 966     for (i = 0; i<RECORD_HASH_SIZE; i++)
 967     {
 968         ZOOM_record_cache rc;
 969         for (rc = r->record_hash[i]; rc; rc = rc->next)
 970         {
 971             if (rc->rec.wrbuf_marc)
 972                 wrbuf_destroy(rc->rec.wrbuf_marc);
 973             if (rc->rec.wrbuf_iconv)
 974                 wrbuf_destroy(rc->rec.wrbuf_iconv);
 975             if (rc->rec.wrbuf_opac)
 976                 wrbuf_destroy(rc->rec.wrbuf_opac);
 977         }
 978         r->record_hash[i] = 0;
 979     }
 980 }
 981
 982 ZOOM_API(void)
 983     ZOOM_resultset_destroy(ZOOM_resultset r)
 984 {
 985     resultset_destroy(r);
 986 }
 987
 988 static void resultset_destroy(ZOOM_resultset r)
 989 {
 990     if (!r)
 991         return;
 992     (r->refcount)--;
 993     yaz_log(log_details, "%p ZOOM_resultset_destroy r=%p count=%d",
 994             r, r, r->refcount);
 995     if (r->refcount == 0)
 996     {
 997         ZOOM_resultset_cache_reset(r);
 998
 999         if (r->connection)
1000         {
1001             /* remove ourselves from the resultsets in connection */
1002             ZOOM_resultset *rp = &r->connection->resultsets;
1003             while (1)
1004             {
1005                 assert(*rp);   /* we must be in this list!! */
1006                 if (*rp == r)
1007                 {   /* OK, we're here - take us out of it */
1008                     *rp = (*rp)->next;
1009                     break;
1010                 }
1011                 rp = &(*rp)->next;
1012             }
1013         }
1014         ZOOM_query_destroy(r->query);
1015         ZOOM_options_destroy(r->options);
1016         if (r->rpn_iconv)
1017             yaz_iconv_close(r->rpn_iconv);
1018         odr_destroy(r->odr);
1019         xfree(r->setname);
1020         xfree(r->schema);
1021         xfree(r);
1022     }
1023 }
1024
1025 ZOOM_API(size_t)
1026     ZOOM_resultset_size(ZOOM_resultset r)
1027 {
1028     yaz_log(log_details, "ZOOM_resultset_size r=%p count=%d",
1029             r, r->size);
1030     return r->size;
1031 }
1032
1033 static void do_close(ZOOM_connection c)
1034 {
1035     if (c->cs)
1036         cs_close(c->cs);
1037     c->cs = 0;
1038     ZOOM_connection_set_mask(c, 0);
1039     c->state = STATE_IDLE;
1040 }
1041
1042 static int ZOOM_test_reconnect(ZOOM_connection c)
1043 {
1044     ZOOM_Event event;
1045
1046     if (!c->reconnect_ok)
1047         return 0;
1048     do_close(c);
1049     c->reconnect_ok = 0;
1050     c->tasks->running = 0;
1051     ZOOM_connection_insert_task(c, ZOOM_TASK_CONNECT);
1052
1053     event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
1054     ZOOM_connection_put_event(c, event);
1055
1056     return 1;
1057 }
1058
1059 static void ZOOM_resultset_retrieve(ZOOM_resultset r,
1060                                     int force_sync, int start, int count)
1061 {
1062     ZOOM_task task;
1063     ZOOM_connection c;
1064     const char *cp;
1065     const char *syntax, *elementSetName;
1066
1067     if (!r)
1068         return;
1069     yaz_log(log_details, "%p ZOOM_resultset_retrieve force_sync=%d start=%d"
1070             " count=%d", r, force_sync, start, count);
1071     c = r->connection;
1072     if (!c)
1073         return;
1074
1075     if (c->host_port && c->proto == PROTO_HTTP)
1076     {
1077         if (!c->cs)
1078         {
1079             yaz_log(log_details, "%p ZOOM_resultset_retrieve: no comstack", r);
1080             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
1081         }
1082         else
1083         {
1084             yaz_log(log_details, "%p ZOOM_resultset_retrieve: prepare "
1085                     "reconnect", r);
1086             c->reconnect_ok = 1;
1087         }
1088     }
1089     task = ZOOM_connection_add_task(c, ZOOM_TASK_RETRIEVE);
1090     task->u.retrieve.resultset = r;
1091     task->u.retrieve.start = start;
1092     task->u.retrieve.count = count;
1093
1094     syntax = ZOOM_options_get(r->options, "preferredRecordSyntax");
1095     task->u.retrieve.syntax = syntax ? xstrdup(syntax) : 0;
1096     elementSetName = ZOOM_options_get(r->options, "elementSetName");
1097     task->u.retrieve.elementSetName = elementSetName
1098         ? xstrdup(elementSetName) : 0;
1099
1100     cp = ZOOM_options_get(r->options, "schema");
1101     if (cp)
1102     {
1103         if (!r->schema || strcmp(r->schema, cp))
1104         {
1105             xfree(r->schema);
1106             r->schema = xstrdup(cp);
1107         }
1108     }
1109
1110     ZOOM_resultset_addref(r);
1111
1112     if (!r->connection->async || force_sync)
1113         while (r->connection && ZOOM_event(1, &r->connection))
1114             ;
1115 }
1116
1117 ZOOM_API(void)
1118     ZOOM_resultset_records(ZOOM_resultset r, ZOOM_record *recs,
1119                            size_t start, size_t count)
1120 {
1121     int force_present = 0;
1122
1123     if (!r)
1124         return ;
1125     yaz_log(log_api, "%p ZOOM_resultset_records r=%p start=%ld count=%ld",
1126             r, r, (long) start, (long) count);
1127     if (count && recs)
1128         force_present = 1;
1129     ZOOM_resultset_retrieve(r, force_present, start, count);
1130     if (force_present)
1131     {
1132         size_t i;
1133         for (i = 0; i< count; i++)
1134             recs[i] = ZOOM_resultset_record_immediate(r, i+start);
1135     }
1136 }
1137
1138 static void get_cert(ZOOM_connection c)
1139 {
1140     char *cert_buf;
1141     int cert_len;
1142
1143     if (cs_get_peer_certificate_x509(c->cs, &cert_buf, &cert_len))
1144     {
1145         ZOOM_connection_option_setl(c, "sslPeerCert",
1146                                     cert_buf, cert_len);
1147         xfree(cert_buf);
1148     }
1149 }
1150
1151 static zoom_ret do_connect(ZOOM_connection c)
1152 {
1153     void *add;
1154     const char *effective_host;
1155
1156     if (c->proxy)
1157         effective_host = c->proxy;
1158     else
1159         effective_host = c->host_port;
1160
1161     yaz_log(log_details, "%p do_connect effective_host=%s", c, effective_host);
1162
1163     if (c->cs)
1164         cs_close(c->cs);
1165     c->cs = cs_create_host(effective_host, 0, &add);
1166
1167     if (c->cs && c->cs->protocol == PROTO_HTTP)
1168     {
1169 #if YAZ_HAVE_XML2
1170         const char *path = 0;
1171
1172         c->proto = PROTO_HTTP;
1173         cs_get_host_args(c->host_port, &path);
1174         xfree(c->path);
1175         c->path = (char*) xmalloc(strlen(path)+2);
1176         c->path[0] = '/';
1177         strcpy(c->path+1, path);
1178 #else
1179         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_PROTOCOL, "SRW");
1180         do_close(c);
1181         return zoom_complete;
1182 #endif
1183     }
1184     if (c->cs)
1185     {
1186         int ret = cs_connect(c->cs, add);
1187         if (ret == 0)
1188         {
1189             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
1190             ZOOM_connection_put_event(c, event);
1191             get_cert(c);
1192             if (c->proto == PROTO_Z3950)
1193                 ZOOM_connection_send_init(c);
1194             else
1195             {
1196                 /* no init request for SRW .. */
1197                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
1198                 ZOOM_connection_remove_task(c);
1199                 ZOOM_connection_set_mask(c, 0);
1200                 ZOOM_connection_exec_task(c);
1201             }
1202             c->state = STATE_ESTABLISHED;
1203             return zoom_pending;
1204         }
1205         else if (ret > 0)
1206         {
1207             int mask = ZOOM_SELECT_EXCEPT;
1208             if (c->cs->io_pending & CS_WANT_WRITE)
1209                 mask += ZOOM_SELECT_WRITE;
1210             if (c->cs->io_pending & CS_WANT_READ)
1211                 mask += ZOOM_SELECT_READ;
1212             ZOOM_connection_set_mask(c, mask);
1213             c->state = STATE_CONNECTING;
1214             return zoom_pending;
1215         }
1216     }
1217     c->state = STATE_IDLE;
1218     set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
1219     return zoom_complete;
1220 }
1221
1222 static void otherInfo_attach(ZOOM_connection c, Z_APDU *a, ODR out)
1223 {
1224     int i;
1225     for (i = 0; i<200; i++)
1226     {
1227         size_t len;
1228         Odr_oid *oid;
1229         Z_OtherInformation **oi;
1230         char buf[80];
1231         const char *val;
1232         const char *cp;
1233
1234         sprintf(buf, "otherInfo%d", i);
1235         val = ZOOM_options_get(c->options, buf);
1236         if (!val)
1237             break;
1238         cp = strchr(val, ':');
1239         if (!cp)
1240             continue;
1241         len = cp - val;
1242         if (len >= sizeof(buf))
1243             len = sizeof(buf)-1;
1244         memcpy(buf, val, len);
1245         buf[len] = '\0';
1246
1247         oid = yaz_string_to_oid_odr(yaz_oid_std(), CLASS_USERINFO,
1248                                     buf, out);
1249         if (!oid)
1250             continue;
1251
1252         yaz_oi_APDU(a, &oi);
1253         yaz_oi_set_string_oid(oi, out, oid, 1, cp+1);
1254     }
1255 }
1256
1257 static int encode_APDU(ZOOM_connection c, Z_APDU *a, ODR out)
1258 {
1259     assert(a);
1260     if (c->cookie_out)
1261     {
1262         Z_OtherInformation **oi;
1263         yaz_oi_APDU(a, &oi);
1264         yaz_oi_set_string_oid(oi, out, yaz_oid_userinfo_cookie,
1265                               1, c->cookie_out);
1266     }
1267     if (c->client_IP)
1268     {
1269         Z_OtherInformation **oi;
1270         yaz_oi_APDU(a, &oi);
1271         yaz_oi_set_string_oid(oi, out, yaz_oid_userinfo_client_ip,
1272                               1, c->client_IP);
1273     }
1274     otherInfo_attach(c, a, out);
1275     if (!z_APDU(out, &a, 0, 0))
1276     {
1277         FILE *outf = fopen("/tmp/apdu.txt", "a");
1278         if (a && outf)
1279         {
1280             ODR odr_pr = odr_createmem(ODR_PRINT);
1281             fprintf(outf, "a=%p\n", a);
1282             odr_setprint(odr_pr, outf);
1283             z_APDU(odr_pr, &a, 0, 0);
1284             odr_destroy(odr_pr);
1285         }
1286         yaz_log(log_api, "%p encoding_APDU: encoding failed", c);
1287         set_ZOOM_error(c, ZOOM_ERROR_ENCODE, 0);
1288         odr_reset(out);
1289         return -1;
1290     }
1291     yaz_log(log_details, "%p encoding_APDU encoding OK", c);
1292     return 0;
1293 }
1294
1295 static zoom_ret send_APDU(ZOOM_connection c, Z_APDU *a)
1296 {
1297     ZOOM_Event event;
1298     assert(a);
1299     if (encode_APDU(c, a, c->odr_out))
1300         return zoom_complete;
1301     yaz_log(log_details, "%p send APDU type=%d", c, a->which);
1302     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1303     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
1304     ZOOM_connection_put_event(c, event);
1305     odr_reset(c->odr_out);
1306     return do_write(c);
1307 }
1308
1309 /* returns 1 if PDU was sent OK (still pending )
1310    0 if PDU was not sent OK (nothing to wait for)
1311 */
1312
1313 static zoom_ret ZOOM_connection_send_init(ZOOM_connection c)
1314 {
1315     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_initRequest);
1316     Z_InitRequest *ireq = apdu->u.initRequest;
1317     Z_IdAuthentication *auth = (Z_IdAuthentication *)
1318         odr_malloc(c->odr_out, sizeof(*auth));
1319     char *version;
1320
1321     ODR_MASK_SET(ireq->options, Z_Options_search);
1322     ODR_MASK_SET(ireq->options, Z_Options_present);
1323     ODR_MASK_SET(ireq->options, Z_Options_scan);
1324     ODR_MASK_SET(ireq->options, Z_Options_sort);
1325     ODR_MASK_SET(ireq->options, Z_Options_extendedServices);
1326     ODR_MASK_SET(ireq->options, Z_Options_namedResultSets);
1327
1328     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_1);
1329     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_2);
1330     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_3);
1331
1332     /* Index Data's Z39.50 Implementor Id is 81 */
1333     ireq->implementationId =
1334         odr_prepend(c->odr_out,
1335                     ZOOM_options_get(c->options, "implementationId"),
1336                     odr_prepend(c->odr_out, "81", ireq->implementationId));
1337
1338     ireq->implementationName =
1339         odr_prepend(c->odr_out,
1340                     ZOOM_options_get(c->options, "implementationName"),
1341                     odr_prepend(c->odr_out, "ZOOM-C",
1342                                 ireq->implementationName));
1343
1344     version = odr_strdup(c->odr_out, "$Revision: 1.131 $");
1345     if (strlen(version) > 10)   /* check for unexpanded CVS strings */
1346         version[strlen(version)-2] = '\0';
1347     ireq->implementationVersion =
1348         odr_prepend(c->odr_out,
1349                     ZOOM_options_get(c->options, "implementationVersion"),
1350                     odr_prepend(c->odr_out, &version[11],
1351                                 ireq->implementationVersion));
1352
1353     *ireq->maximumRecordSize = c->maximum_record_size;
1354     *ireq->preferredMessageSize = c->preferred_message_size;
1355
1356     if (c->group || c->password)
1357     {
1358         Z_IdPass *pass = (Z_IdPass *) odr_malloc(c->odr_out, sizeof(*pass));
1359         pass->groupId = 0;
1360         if (c->group)
1361             pass->groupId = odr_strdup(c->odr_out, c->group);
1362         pass->userId = 0;
1363         if (c->user)
1364             pass->userId = odr_strdup(c->odr_out, c->user);
1365         pass->password = 0;
1366         if (c->password)
1367             pass->password = odr_strdup(c->odr_out, c->password);
1368         auth->which = Z_IdAuthentication_idPass;
1369         auth->u.idPass = pass;
1370         ireq->idAuthentication = auth;
1371     }
1372     else if (c->user)
1373     {
1374         auth->which = Z_IdAuthentication_open;
1375         auth->u.open = odr_strdup(c->odr_out, c->user);
1376         ireq->idAuthentication = auth;
1377     }
1378     if (c->proxy)
1379     {
1380         yaz_oi_set_string_oid(&ireq->otherInfo, c->odr_out,
1381                               yaz_oid_userinfo_proxy, 1, c->host_port);
1382     }
1383     if (c->charset || c->lang)
1384     {
1385         Z_OtherInformation **oi;
1386         Z_OtherInformationUnit *oi_unit;
1387
1388         yaz_oi_APDU(apdu, &oi);
1389
1390         if ((oi_unit = yaz_oi_update(oi, c->odr_out, NULL, 0, 0)))
1391         {
1392             ODR_MASK_SET(ireq->options, Z_Options_negotiationModel);
1393             oi_unit->which = Z_OtherInfo_externallyDefinedInfo;
1394             oi_unit->information.externallyDefinedInfo =
1395                 yaz_set_proposal_charneg_list(c->odr_out, " ",
1396                                               c->charset, c->lang, 1);
1397         }
1398     }
1399     assert(apdu);
1400     return send_APDU(c, apdu);
1401 }
1402
1403 #if YAZ_HAVE_XML2
1404 static zoom_ret send_srw(ZOOM_connection c, Z_SRW_PDU *sr)
1405 {
1406     Z_GDU *gdu;
1407     ZOOM_Event event;
1408
1409     gdu = z_get_HTTP_Request_host_path(c->odr_out, c->host_port, c->path);
1410
1411     if (c->sru_mode == zoom_sru_get)
1412     {
1413         yaz_sru_get_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1414     }
1415     else if (c->sru_mode == zoom_sru_post)
1416     {
1417         yaz_sru_post_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1418     }
1419     else if (c->sru_mode == zoom_sru_soap)
1420     {
1421         yaz_sru_soap_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1422     }
1423     if (!z_GDU(c->odr_out, &gdu, 0, 0))
1424         return zoom_complete;
1425     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1426
1427     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
1428     ZOOM_connection_put_event(c, event);
1429     odr_reset(c->odr_out);
1430     return do_write(c);
1431 }
1432 #endif
1433
1434 #if YAZ_HAVE_XML2
1435 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1436 {
1437     int i;
1438     int *start, *count;
1439     ZOOM_resultset resultset = 0;
1440     Z_SRW_PDU *sr = 0;
1441     const char *option_val = 0;
1442
1443     if (c->error)                  /* don't continue on error */
1444         return zoom_complete;
1445     assert(c->tasks);
1446     switch(c->tasks->which)
1447     {
1448     case ZOOM_TASK_SEARCH:
1449         resultset = c->tasks->u.search.resultset;
1450         resultset->setname = xstrdup("default");
1451         ZOOM_options_set(resultset->options, "setname", resultset->setname);
1452         start = &c->tasks->u.search.start;
1453         count = &c->tasks->u.search.count;
1454         break;
1455     case ZOOM_TASK_RETRIEVE:
1456         resultset = c->tasks->u.retrieve.resultset;
1457
1458         start = &c->tasks->u.retrieve.start;
1459         count = &c->tasks->u.retrieve.count;
1460
1461         if (*start >= resultset->size)
1462             return zoom_complete;
1463         if (*start + *count > resultset->size)
1464             *count = resultset->size - *start;
1465
1466         for (i = 0; i < *count; i++)
1467         {
1468             ZOOM_record rec =
1469                 record_cache_lookup(resultset, i + *start,
1470                                     c->tasks->u.retrieve.syntax,
1471                                     c->tasks->u.retrieve.elementSetName);
1472             if (!rec)
1473                 break;
1474             else
1475             {
1476                 ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
1477                 ZOOM_connection_put_event(c, event);
1478             }
1479         }
1480         *start += i;
1481         *count -= i;
1482
1483         if (*count == 0)
1484             return zoom_complete;
1485         break;
1486     default:
1487         return zoom_complete;
1488     }
1489     assert(resultset->query);
1490
1491     sr = yaz_srw_get(c->odr_out, Z_SRW_searchRetrieve_request);
1492
1493     if (resultset->query->z_query->which == Z_Query_type_104
1494         && resultset->query->z_query->u.type_104->which == Z_External_CQL)
1495     {
1496         sr->u.request->query_type = Z_SRW_query_type_cql;
1497         sr->u.request->query.cql =resultset->query->z_query->u.type_104->u.cql;
1498     }
1499     else if (resultset->query->z_query->which == Z_Query_type_1 &&
1500              resultset->query->z_query->u.type_1)
1501     {
1502         sr->u.request->query_type = Z_SRW_query_type_pqf;
1503         sr->u.request->query.pqf = resultset->query->query_string;
1504     }
1505     else
1506     {
1507         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
1508         return zoom_complete;
1509     }
1510     sr->u.request->startRecord = odr_intdup(c->odr_out, *start + 1);
1511     sr->u.request->maximumRecords = odr_intdup(
1512         c->odr_out, resultset->step>0 ? resultset->step : *count);
1513     sr->u.request->recordSchema = resultset->schema;
1514
1515     option_val = ZOOM_resultset_option_get(resultset, "recordPacking");
1516     if (option_val)
1517         sr->u.request->recordPacking = odr_strdup(c->odr_out, option_val);
1518
1519     option_val = ZOOM_resultset_option_get(resultset, "extraArgs");
1520     if (option_val)
1521         sr->extra_args = odr_strdup(c->odr_out, option_val);
1522     return send_srw(c, sr);
1523 }
1524 #else
1525 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1526 {
1527     return zoom_complete;
1528 }
1529 #endif
1530
1531 static zoom_ret ZOOM_connection_send_search(ZOOM_connection c)
1532 {
1533     ZOOM_resultset r;
1534     int lslb, ssub, mspn;
1535     const char *syntax;
1536     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_searchRequest);
1537     Z_SearchRequest *search_req = apdu->u.searchRequest;
1538     const char *elementSetName;
1539     const char *smallSetElementSetName;
1540     const char *mediumSetElementSetName;
1541
1542     assert(c->tasks);
1543     assert(c->tasks->which == ZOOM_TASK_SEARCH);
1544
1545     r = c->tasks->u.search.resultset;
1546
1547     yaz_log(log_details, "%p ZOOM_connection_send_search set=%p", c, r);
1548
1549     elementSetName =
1550         ZOOM_options_get(r->options, "elementSetName");
1551     smallSetElementSetName  =
1552         ZOOM_options_get(r->options, "smallSetElementSetName");
1553     mediumSetElementSetName =
1554         ZOOM_options_get(r->options, "mediumSetElementSetName");
1555
1556     if (!smallSetElementSetName)
1557         smallSetElementSetName = elementSetName;
1558
1559     if (!mediumSetElementSetName)
1560         mediumSetElementSetName = elementSetName;
1561
1562     assert(r);
1563     assert(r->query);
1564
1565     /* prepare query for the search request */
1566     search_req->query = r->query->z_query;
1567     if (!search_req->query)
1568     {
1569         set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
1570         return zoom_complete;
1571     }
1572     if (r->query->z_query->which == Z_Query_type_1 && r->rpn_iconv)
1573     {
1574         search_req->query = yaz_copy_Z_Query(r->query->z_query, c->odr_out);
1575
1576         yaz_query_charset_convert_rpnquery(search_req->query->u.type_1,
1577                                            c->odr_out, r->rpn_iconv);
1578     }
1579     search_req->databaseNames = r->databaseNames;
1580     search_req->num_databaseNames = r->num_databaseNames;
1581
1582     /* get syntax (no need to provide unless piggyback is in effect) */
1583     syntax = c->tasks->u.search.syntax;
1584
1585     lslb = ZOOM_options_get_int(r->options, "largeSetLowerBound", -1);
1586     ssub = ZOOM_options_get_int(r->options, "smallSetUpperBound", -1);
1587     mspn = ZOOM_options_get_int(r->options, "mediumSetPresentNumber", -1);
1588     if (lslb != -1 && ssub != -1 && mspn != -1)
1589     {
1590         /* So're a Z39.50 expert? Let's hope you don't do sort */
1591         *search_req->largeSetLowerBound = lslb;
1592         *search_req->smallSetUpperBound = ssub;
1593         *search_req->mediumSetPresentNumber = mspn;
1594     }
1595     else if (c->tasks->u.search.start == 0 && c->tasks->u.search.count > 0
1596              && r->piggyback && !r->r_sort_spec && !r->schema)
1597     {
1598         /* Regular piggyback - do it unless we're going to do sort */
1599         *search_req->largeSetLowerBound = 2000000000;
1600         *search_req->smallSetUpperBound = 1;
1601         *search_req->mediumSetPresentNumber =
1602             r->step>0 ? r->step : c->tasks->u.search.count;
1603     }
1604     else
1605     {
1606         /* non-piggyback. Need not provide elementsets or syntaxes .. */
1607         smallSetElementSetName = 0;
1608         mediumSetElementSetName = 0;
1609         syntax = 0;
1610     }
1611     if (smallSetElementSetName && *smallSetElementSetName)
1612     {
1613         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1614             odr_malloc(c->odr_out, sizeof(*esn));
1615
1616         esn->which = Z_ElementSetNames_generic;
1617         esn->u.generic = odr_strdup(c->odr_out, smallSetElementSetName);
1618         search_req->smallSetElementSetNames = esn;
1619     }
1620     if (mediumSetElementSetName && *mediumSetElementSetName)
1621     {
1622         Z_ElementSetNames *esn =(Z_ElementSetNames *)
1623             odr_malloc(c->odr_out, sizeof(*esn));
1624
1625         esn->which = Z_ElementSetNames_generic;
1626         esn->u.generic = odr_strdup(c->odr_out, mediumSetElementSetName);
1627         search_req->mediumSetElementSetNames = esn;
1628     }
1629     if (syntax)
1630         search_req->preferredRecordSyntax =
1631             zoom_yaz_str_to_z3950oid(c, CLASS_RECSYN, syntax);
1632
1633     if (!r->setname)
1634     {
1635         if (c->support_named_resultsets)
1636         {
1637             char setname[14];
1638             int ord;
1639             /* find the lowest unused ordinal so that we re-use
1640                result sets on the server. */
1641             for (ord = 1; ; ord++)
1642             {
1643                 ZOOM_resultset rp;
1644                 sprintf(setname, "%d", ord);
1645                 for (rp = c->resultsets; rp; rp = rp->next)
1646                     if (rp->setname && !strcmp(rp->setname, setname))
1647                         break;
1648                 if (!rp)
1649                     break;
1650             }
1651             r->setname = xstrdup(setname);
1652             yaz_log(log_details, "%p ZOOM_connection_send_search: allocating "
1653                     "set %s", c, r->setname);
1654         }
1655         else
1656         {
1657             yaz_log(log_details, "%p ZOOM_connection_send_search: using "
1658                     "default set", c);
1659             r->setname = xstrdup("default");
1660         }
1661         ZOOM_options_set(r->options, "setname", r->setname);
1662     }
1663     search_req->resultSetName = odr_strdup(c->odr_out, r->setname);
1664     return send_APDU(c, apdu);
1665 }
1666
1667 static void response_default_diag(ZOOM_connection c, Z_DefaultDiagFormat *r)
1668 {
1669     oid_class oclass;
1670     char *addinfo = 0;
1671
1672     switch (r->which)
1673     {
1674     case Z_DefaultDiagFormat_v2Addinfo:
1675         addinfo = r->u.v2Addinfo;
1676         break;
1677     case Z_DefaultDiagFormat_v3Addinfo:
1678         addinfo = r->u.v3Addinfo;
1679         break;
1680     }
1681     xfree(c->addinfo);
1682     c->addinfo = 0;
1683     set_dset_error(c, *r->condition,
1684                    yaz_oid_to_string(yaz_oid_std(),
1685                                      r->diagnosticSetId, &oclass),
1686                    addinfo, 0);
1687 }
1688
1689 static void response_diag(ZOOM_connection c, Z_DiagRec *p)
1690 {
1691     if (p->which != Z_DiagRec_defaultFormat)
1692         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1693     else
1694         response_default_diag(c, p->u.defaultFormat);
1695 }
1696
1697 ZOOM_API(ZOOM_record)
1698     ZOOM_record_clone(ZOOM_record srec)
1699 {
1700     char *buf;
1701     int size;
1702     ODR odr_enc;
1703     ZOOM_record nrec;
1704
1705     odr_enc = odr_createmem(ODR_ENCODE);
1706     if (!z_NamePlusRecord(odr_enc, &srec->npr, 0, 0))
1707         return 0;
1708     buf = odr_getbuf(odr_enc, &size, 0);
1709
1710     nrec = (ZOOM_record) xmalloc(sizeof(*nrec));
1711     nrec->odr = odr_createmem(ODR_DECODE);
1712     nrec->wrbuf_marc = 0;
1713     nrec->wrbuf_iconv = 0;
1714     nrec->wrbuf_opac = 0;
1715     odr_setbuf(nrec->odr, buf, size, 0);
1716     z_NamePlusRecord(nrec->odr, &nrec->npr, 0, 0);
1717
1718     odr_destroy(odr_enc);
1719     return nrec;
1720 }
1721
1722 ZOOM_API(ZOOM_record)
1723     ZOOM_resultset_record_immediate(ZOOM_resultset s,size_t pos)
1724 {
1725     const char *syntax =
1726         ZOOM_options_get(s->options, "preferredRecordSyntax");
1727     const char *elementSetName =
1728         ZOOM_options_get(s->options, "elementSetName");
1729
1730     return record_cache_lookup(s, pos, syntax, elementSetName);
1731 }
1732
1733 ZOOM_API(ZOOM_record)
1734     ZOOM_resultset_record(ZOOM_resultset r, size_t pos)
1735 {
1736     ZOOM_record rec = ZOOM_resultset_record_immediate(r, pos);
1737
1738     if (!rec)
1739     {
1740         /*
1741          * MIKE: I think force_sync should always be zero, but I don't
1742          * want to make this change until I get the go-ahead from
1743          * Adam, in case something depends on the old synchronous
1744          * behaviour.
1745          */
1746         int force_sync = 1;
1747         if (getenv("ZOOM_RECORD_NO_FORCE_SYNC")) force_sync = 0;
1748         ZOOM_resultset_retrieve(r, force_sync, pos, 1);
1749         rec = ZOOM_resultset_record_immediate(r, pos);
1750     }
1751     return rec;
1752 }
1753
1754 ZOOM_API(void)
1755     ZOOM_record_destroy(ZOOM_record rec)
1756 {
1757     if (!rec)
1758         return;
1759     if (rec->wrbuf_marc)
1760         wrbuf_destroy(rec->wrbuf_marc);
1761     if (rec->wrbuf_iconv)
1762         wrbuf_destroy(rec->wrbuf_iconv);
1763     if (rec->wrbuf_opac)
1764         wrbuf_destroy(rec->wrbuf_opac);
1765     odr_destroy(rec->odr);
1766     xfree(rec);
1767 }
1768
1769 static const char *marc_iconv_return(ZOOM_record rec, int marc_type,
1770                                      int *len,
1771                                      const char *buf, int sz,
1772                                      const char *record_charset)
1773 {
1774     char to[40];
1775     char from[40];
1776     yaz_iconv_t cd = 0;
1777     yaz_marc_t mt = yaz_marc_create();
1778
1779     *from = '\0';
1780     strcpy(to, "UTF-8");
1781     if (record_charset && *record_charset)
1782     {
1783         /* Use "from,to" or just "from" */
1784         const char *cp = strchr(record_charset, ',');
1785         int clen = strlen(record_charset);
1786         if (cp && cp[1])
1787         {
1788             strncpy( to, cp+1, sizeof(to)-1);
1789             to[sizeof(to)-1] = '\0';
1790             clen = cp - record_charset;
1791         }
1792         if (clen > sizeof(from)-1)
1793             clen = sizeof(from)-1;
1794
1795         if (clen)
1796             strncpy(from, record_charset, clen);
1797         from[clen] = '\0';
1798     }
1799
1800     if (*from && *to)
1801     {
1802         cd = yaz_iconv_open(to, from);
1803         yaz_marc_iconv(mt, cd);
1804     }
1805
1806     yaz_marc_xml(mt, marc_type);
1807     if (!rec->wrbuf_marc)
1808         rec->wrbuf_marc = wrbuf_alloc();
1809     wrbuf_rewind(rec->wrbuf_marc);
1810     if (yaz_marc_decode_wrbuf(mt, buf, sz, rec->wrbuf_marc) > 0)
1811     {
1812         yaz_marc_destroy(mt);
1813         if (cd)
1814             yaz_iconv_close(cd);
1815         if (len)
1816             *len = wrbuf_len(rec->wrbuf_marc);
1817         return wrbuf_cstr(rec->wrbuf_marc);
1818     }
1819     yaz_marc_destroy(mt);
1820     if (cd)
1821         yaz_iconv_close(cd);
1822     return 0;
1823 }
1824
1825 static const char *record_iconv_return(ZOOM_record rec, int *len,
1826                                        const char *buf, int sz,
1827                                        const char *record_charset)
1828 {
1829     char to[40];
1830     char from[40];
1831     yaz_iconv_t cd = 0;
1832
1833     *from = '\0';
1834     strcpy(to, "UTF-8");
1835
1836     if (record_charset && *record_charset)
1837     {
1838         /* Use "from,to" or just "from" */
1839         const char *cp = strchr(record_charset, ',');
1840         int clen = strlen(record_charset);
1841         if (cp && cp[1])
1842         {
1843             strncpy( to, cp+1, sizeof(to)-1);
1844             to[sizeof(to)-1] = '\0';
1845             clen = cp - record_charset;
1846         }
1847         if (clen > sizeof(from)-1)
1848             clen = sizeof(from)-1;
1849
1850         if (clen)
1851             strncpy(from, record_charset, clen);
1852         from[clen] = '\0';
1853     }
1854
1855     if (*from && *to && (cd = yaz_iconv_open(to, from)))
1856     {
1857         if (!rec->wrbuf_iconv)
1858             rec->wrbuf_iconv = wrbuf_alloc();
1859
1860         wrbuf_rewind(rec->wrbuf_iconv);
1861
1862         wrbuf_iconv_write(rec->wrbuf_iconv, cd, buf, sz);
1863         wrbuf_iconv_reset(rec->wrbuf_iconv, cd);
1864
1865         buf = wrbuf_cstr(rec->wrbuf_iconv);
1866         sz = wrbuf_len(rec->wrbuf_iconv);
1867         yaz_iconv_close(cd);
1868     }
1869     if (len)
1870         *len = sz;
1871     return buf;
1872 }
1873
1874 ZOOM_API(int)
1875     ZOOM_record_error(ZOOM_record rec, const char **cp,
1876                       const char **addinfo, const char **diagset)
1877 {
1878     Z_NamePlusRecord *npr;
1879
1880     if (!rec)
1881         return 0;
1882     npr = rec->npr;
1883     if (npr && npr->which == Z_NamePlusRecord_surrogateDiagnostic)
1884     {
1885         Z_DiagRec *diag_rec = npr->u.surrogateDiagnostic;
1886         int error = YAZ_BIB1_UNSPECIFIED_ERROR;
1887         const char *add = 0;
1888
1889         if (diag_rec->which == Z_DiagRec_defaultFormat)
1890         {
1891             Z_DefaultDiagFormat *ddf = diag_rec->u.defaultFormat;
1892             oid_class oclass;
1893
1894             error = *ddf->condition;
1895             switch (ddf->which)
1896             {
1897             case Z_DefaultDiagFormat_v2Addinfo:
1898                 add = ddf->u.v2Addinfo;
1899                 break;
1900             case Z_DefaultDiagFormat_v3Addinfo:
1901                 add = ddf->u.v3Addinfo;
1902                 break;
1903             }
1904             if (diagset)
1905                 *diagset =
1906                     yaz_oid_to_string(yaz_oid_std(),
1907                                       ddf->diagnosticSetId, &oclass);
1908         }
1909         else
1910         {
1911             if (diagset)
1912                 *diagset = "Bib-1";
1913         }
1914         if (addinfo)
1915             *addinfo = add ? add : "";
1916         if (cp)
1917             *cp = diagbib1_str(error);
1918         return error;
1919     }
1920     return 0;
1921 }
1922
1923 ZOOM_API(const char *)
1924     ZOOM_record_get(ZOOM_record rec, const char *type_spec, int *len)
1925 {
1926     char type[40];
1927     char charset[40];
1928     char xpath[512];
1929     const char *cp;
1930     int i;
1931     Z_NamePlusRecord *npr;
1932
1933     if (len)
1934         *len = 0; /* default return */
1935
1936     if (!rec)
1937         return 0;
1938     npr = rec->npr;
1939     if (!npr)
1940         return 0;
1941
1942     cp = type_spec;
1943     for (i = 0; cp[i] && i < sizeof(type)-1; i++)
1944     {
1945         if (cp[i] == ';' || cp[i] == ' ')
1946             break;
1947         type[i] = cp[i];
1948     }
1949     type[i] = '\0';
1950     charset[0] = '\0';
1951     while (type_spec[i] == ';')
1952     {
1953         i++;
1954         while (type_spec[i] == ' ')
1955             i++;
1956         if (!strncmp(type_spec+i, "charset=", 8))
1957         {
1958             int j = 0;
1959             i = i + 8; /* skip charset= */
1960             for (j = 0; type_spec[i]  && j < sizeof(charset)-1; i++, j++)
1961             {
1962                 if (type_spec[i] == ';' || type_spec[i] == ' ')
1963                     break;
1964                 charset[j] = cp[i];
1965             }
1966             charset[j] = '\0';
1967         }
1968         else if (!strncmp(type_spec+i, "xpath=", 6))
1969         {
1970             int j = 0;
1971             i = i + 6;
1972             for (j = 0; type_spec[i] && j < sizeof(xpath)-1; i++, j++)
1973                 xpath[j] = cp[i];
1974             xpath[j] = '\0';
1975         }
1976         while (type_spec[i] == ' ')
1977             i++;
1978     }
1979     if (!strcmp(type, "database"))
1980     {
1981         if (len)
1982             *len = (npr->databaseName ? strlen(npr->databaseName) : 0);
1983         return npr->databaseName;
1984     }
1985     else if (!strcmp(type, "syntax"))
1986     {
1987         const char *desc = 0;
1988         if (npr->which == Z_NamePlusRecord_databaseRecord)
1989         {
1990             Z_External *r = (Z_External *) npr->u.databaseRecord;
1991             desc = yaz_oid_to_string(yaz_oid_std(), r->direct_reference, 0);
1992         }
1993         if (!desc)
1994             desc = "none";
1995         if (len)
1996             *len = strlen(desc);
1997         return desc;
1998     }
1999     if (npr->which != Z_NamePlusRecord_databaseRecord)
2000         return 0;
2001
2002     /* from now on - we have a database record .. */
2003     if (!strcmp(type, "render"))
2004     {
2005         Z_External *r = (Z_External *) npr->u.databaseRecord;
2006         const Odr_oid *oid = r->direct_reference;
2007
2008         /* render bibliographic record .. */
2009         if (r->which == Z_External_OPAC)
2010         {
2011             r = r->u.opac->bibliographicRecord;
2012             if (!r)
2013                 return 0;
2014             oid = r->direct_reference;
2015         }
2016         if (r->which == Z_External_sutrs)
2017             return record_iconv_return(rec, len,
2018                                        (char*) r->u.sutrs->buf,
2019                                        r->u.sutrs->len,
2020                                        charset);
2021         else if (r->which == Z_External_octet)
2022         {
2023             if (yaz_oid_is_iso2709(oid))
2024             {
2025                 const char *ret_buf = marc_iconv_return(
2026                     rec, YAZ_MARC_LINE, len,
2027                     (const char *) r->u.octet_aligned->buf,
2028                     r->u.octet_aligned->len,
2029                     charset);
2030                 if (ret_buf)
2031                     return ret_buf;
2032             }
2033             return record_iconv_return(rec, len,
2034                                        (const char *) r->u.octet_aligned->buf,
2035                                        r->u.octet_aligned->len,
2036                                        charset);
2037         }
2038         else if (r->which == Z_External_grs1)
2039         {
2040             if (!rec->wrbuf_marc)
2041                 rec->wrbuf_marc = wrbuf_alloc();
2042             wrbuf_rewind(rec->wrbuf_marc);
2043             yaz_display_grs1(rec->wrbuf_marc, r->u.grs1, 0);
2044             return record_iconv_return(rec, len,
2045                                        wrbuf_buf(rec->wrbuf_marc),
2046                                        wrbuf_len(rec->wrbuf_marc),
2047                                        charset);
2048         }
2049         return 0;
2050     }
2051     else if (!strcmp(type, "xml"))
2052     {
2053         Z_External *r = (Z_External *) npr->u.databaseRecord;
2054         const Odr_oid *oid = r->direct_reference;
2055
2056         /* render bibliographic record .. */
2057         if (r->which == Z_External_OPAC)
2058         {
2059             r = r->u.opac->bibliographicRecord;
2060             if (!r)
2061                 return 0;
2062             oid = r->direct_reference;
2063         }
2064
2065         if (r->which == Z_External_sutrs)
2066             return record_iconv_return(rec, len,
2067                                        (const char *) r->u.sutrs->buf,
2068                                        r->u.sutrs->len,
2069                                        charset);
2070         else if (r->which == Z_External_octet)
2071         {
2072             int marc_decode_type = YAZ_MARC_MARCXML;
2073             if (yaz_oid_is_iso2709(oid))
2074             {
2075                 const char *ret_buf = marc_iconv_return(
2076                     rec, marc_decode_type, len,
2077                     (const char *) r->u.octet_aligned->buf,
2078                     r->u.octet_aligned->len,
2079                     charset);
2080                 if (ret_buf)
2081                     return ret_buf;
2082             }
2083             return record_iconv_return(rec, len,
2084                                        (const char *) r->u.octet_aligned->buf,
2085                                        r->u.octet_aligned->len,
2086                                        charset);
2087         }
2088         else if (r->which == Z_External_grs1)
2089         {
2090             if (len) *len = 5;
2091             return "GRS-1";
2092         }
2093         return 0;
2094     }
2095     else if (!strcmp(type, "raw"))
2096     {
2097         Z_External *r = (Z_External *) npr->u.databaseRecord;
2098
2099         if (r->which == Z_External_sutrs)
2100         {
2101             if (len) *len = r->u.sutrs->len;
2102             return (const char *) r->u.sutrs->buf;
2103         }
2104         else if (r->which == Z_External_octet)
2105         {
2106             if (len) *len = r->u.octet_aligned->len;
2107             return (const char *) r->u.octet_aligned->buf;
2108         }
2109         else /* grs-1, explain, OPAC, ... */
2110         {
2111             if (len) *len = -1;
2112             return (const char *) npr->u.databaseRecord;
2113         }
2114         return 0;
2115     }
2116     else if (!strcmp (type, "ext"))
2117     {
2118         if (len) *len = -1;
2119         return (const char *) npr->u.databaseRecord;
2120     }
2121     else if (!strcmp (type, "opac"))
2122
2123     {
2124         Z_External *r = (Z_External *) npr->u.databaseRecord;
2125         if (r->which == Z_External_OPAC)
2126         {
2127             if (!rec->wrbuf_opac)
2128                 rec->wrbuf_opac = wrbuf_alloc();
2129             wrbuf_rewind(rec->wrbuf_opac);
2130             yaz_display_OPAC(rec->wrbuf_opac, r->u.opac, 0);
2131             return record_iconv_return(rec, len,
2132                                        wrbuf_buf(rec->wrbuf_opac),
2133                                        wrbuf_len(rec->wrbuf_opac),
2134                                        charset);
2135         }
2136     }
2137     return 0;
2138 }
2139
2140 static int strcmp_null(const char *v1, const char *v2)
2141 {
2142     if (!v1 && !v2)
2143         return 0;
2144     if (!v1 || !v2)
2145         return -1;
2146     return strcmp(v1, v2);
2147 }
2148
2149 static size_t record_hash(int pos)
2150 {
2151     if (pos < 0)
2152         pos = 0;
2153     return pos % RECORD_HASH_SIZE;
2154 }
2155
2156 static void record_cache_add(ZOOM_resultset r, Z_NamePlusRecord *npr,
2157                              int pos,
2158                              const char *syntax, const char *elementSetName)
2159 {
2160     ZOOM_record_cache rc;
2161
2162     ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
2163     ZOOM_connection_put_event(r->connection, event);
2164
2165     for (rc = r->record_hash[record_hash(pos)]; rc; rc = rc->next)
2166     {
2167         if (pos == rc->pos)
2168         {
2169             if (strcmp_null(r->schema, rc->schema))
2170                 continue;
2171             if (strcmp_null(elementSetName,rc->elementSetName))
2172                 continue;
2173             if (strcmp_null(syntax, rc->syntax))
2174                 continue;
2175             /* not destroying rc->npr (it's handled by nmem )*/
2176             rc->rec.npr = npr;
2177             /* keeping wrbuf_marc too */
2178             return;
2179         }
2180     }
2181     rc = (ZOOM_record_cache) odr_malloc(r->odr, sizeof(*rc));
2182     rc->rec.npr = npr;
2183     rc->rec.odr = 0;
2184     rc->rec.wrbuf_marc = 0;
2185     rc->rec.wrbuf_iconv = 0;
2186     rc->rec.wrbuf_opac = 0;
2187     if (elementSetName)
2188         rc->elementSetName = odr_strdup(r->odr, elementSetName);
2189     else
2190         rc->elementSetName = 0;
2191
2192     if (syntax)
2193         rc->syntax = odr_strdup(r->odr, syntax);
2194     else
2195         rc->syntax = 0;
2196
2197     if (r->schema)
2198         rc->schema = odr_strdup(r->odr, r->schema);
2199     else
2200         rc->schema = 0;
2201
2202     rc->pos = pos;
2203     rc->next = r->record_hash[record_hash(pos)];
2204     r->record_hash[record_hash(pos)] = rc;
2205 }
2206
2207 static ZOOM_record record_cache_lookup(ZOOM_resultset r, int pos,
2208                                        const char *syntax,
2209                                        const char *elementSetName)
2210 {
2211     ZOOM_record_cache rc;
2212
2213     for (rc = r->record_hash[record_hash(pos)]; rc; rc = rc->next)
2214     {
2215         if (pos == rc->pos)
2216         {
2217             if (strcmp_null(r->schema, rc->schema))
2218                 continue;
2219             if (strcmp_null(elementSetName,rc->elementSetName))
2220                 continue;
2221             if (strcmp_null(syntax, rc->syntax))
2222                 continue;
2223             return &rc->rec;
2224         }
2225     }
2226     return 0;
2227 }
2228
2229 static void handle_records(ZOOM_connection c, Z_Records *sr,
2230                            int present_phase)
2231 {
2232     ZOOM_resultset resultset;
2233     int *start, *count;
2234     const char *syntax = 0, *elementSetName = 0;
2235
2236     if (!c->tasks)
2237         return ;
2238     switch (c->tasks->which)
2239     {
2240     case ZOOM_TASK_SEARCH:
2241         resultset = c->tasks->u.search.resultset;
2242         start = &c->tasks->u.search.start;
2243         count = &c->tasks->u.search.count;
2244         syntax = c->tasks->u.search.syntax;
2245         elementSetName = c->tasks->u.search.elementSetName;
2246         break;
2247     case ZOOM_TASK_RETRIEVE:
2248         resultset = c->tasks->u.retrieve.resultset;
2249         start = &c->tasks->u.retrieve.start;
2250         count = &c->tasks->u.retrieve.count;
2251         syntax = c->tasks->u.retrieve.syntax;
2252         elementSetName = c->tasks->u.retrieve.elementSetName;
2253         break;
2254     default:
2255         return;
2256     }
2257     if (sr && sr->which == Z_Records_NSD)
2258         response_default_diag(c, sr->u.nonSurrogateDiagnostic);
2259     else if (sr && sr->which == Z_Records_multipleNSD)
2260     {
2261         if (sr->u.multipleNonSurDiagnostics->num_diagRecs >= 1)
2262             response_diag(c, sr->u.multipleNonSurDiagnostics->diagRecs[0]);
2263         else
2264             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2265     }
2266     else
2267     {
2268         if (*count + *start > resultset->size)
2269             *count = resultset->size - *start;
2270         if (*count < 0)
2271             *count = 0;
2272         if (sr && sr->which == Z_Records_DBOSD)
2273         {
2274             int i;
2275             NMEM nmem = odr_extract_mem(c->odr_in);
2276             Z_NamePlusRecordList *p =
2277                 sr->u.databaseOrSurDiagnostics;
2278             for (i = 0; i<p->num_records; i++)
2279             {
2280                 record_cache_add(resultset, p->records[i], i + *start,
2281                                  syntax, elementSetName);
2282             }
2283             *count -= i;
2284             if (*count < 0)
2285                 *count = 0;
2286             *start += i;
2287             yaz_log(log_details,
2288                     "handle_records resultset=%p start=%d count=%d",
2289                     resultset, *start, *count);
2290
2291             /* transfer our response to search_nmem .. we need it later */
2292             nmem_transfer(odr_getmem(resultset->odr), nmem);
2293             nmem_destroy(nmem);
2294             if (present_phase && p->num_records == 0)
2295             {
2296                 /* present response and we didn't get any records! */
2297                 Z_NamePlusRecord *myrec =
2298                     zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2299                 record_cache_add(resultset, myrec, *start,
2300                                  syntax, elementSetName);
2301             }
2302         }
2303         else if (present_phase)
2304         {
2305             /* present response and we didn't get any records! */
2306             Z_NamePlusRecord *myrec =
2307                 zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2308             record_cache_add(resultset, myrec, *start, syntax, elementSetName);
2309         }
2310     }
2311 }
2312
2313 static void handle_present_response(ZOOM_connection c, Z_PresentResponse *pr)
2314 {
2315     handle_records(c, pr->records, 1);
2316 }
2317
2318 static void handle_queryExpressionTerm(ZOOM_options opt, const char *name,
2319                                        Z_Term *term)
2320 {
2321     switch (term->which)
2322     {
2323     case Z_Term_general:
2324         ZOOM_options_setl(opt, name,
2325                           (const char *)(term->u.general->buf),
2326                           term->u.general->len);
2327         break;
2328     case Z_Term_characterString:
2329         ZOOM_options_set(opt, name, term->u.characterString);
2330         break;
2331     case Z_Term_numeric:
2332         ZOOM_options_set_int(opt, name, *term->u.numeric);
2333         break;
2334     }
2335 }
2336
2337 static void handle_queryExpression(ZOOM_options opt, const char *name,
2338                                    Z_QueryExpression *exp)
2339 {
2340     char opt_name[80];
2341
2342     switch (exp->which)
2343     {
2344     case Z_QueryExpression_term:
2345         if (exp->u.term && exp->u.term->queryTerm)
2346         {
2347             sprintf(opt_name, "%s.term", name);
2348             handle_queryExpressionTerm(opt, opt_name, exp->u.term->queryTerm);
2349         }
2350         break;
2351     case Z_QueryExpression_query:
2352         break;
2353     }
2354 }
2355
2356 static void handle_searchResult(ZOOM_connection c, ZOOM_resultset resultset,
2357                                 Z_OtherInformation *o)
2358 {
2359     int i;
2360     for (i = 0; o && i < o->num_elements; i++)
2361     {
2362         if (o->list[i]->which == Z_OtherInfo_externallyDefinedInfo)
2363         {
2364             Z_External *ext = o->list[i]->information.externallyDefinedInfo;
2365
2366             if (ext->which == Z_External_searchResult1)
2367             {
2368                 int j;
2369                 Z_SearchInfoReport *sr = ext->u.searchResult1;
2370
2371                 if (sr->num)
2372                     ZOOM_options_set_int(
2373                         resultset->options, "searchresult.size", sr->num);
2374
2375                 for (j = 0; j < sr->num; j++)
2376                 {
2377                     Z_SearchInfoReport_s *ent =
2378                         ext->u.searchResult1->elements[j];
2379                     char pref[80];
2380
2381                     sprintf(pref, "searchresult.%d", j);
2382
2383                     if (ent->subqueryId)
2384                     {
2385                         char opt_name[80];
2386                         sprintf(opt_name, "%s.id", pref);
2387                         ZOOM_options_set(resultset->options, opt_name,
2388                                          ent->subqueryId);
2389                     }
2390                     if (ent->subqueryExpression)
2391                     {
2392                         char opt_name[80];
2393                         sprintf(opt_name, "%s.subquery", pref);
2394                         handle_queryExpression(resultset->options, opt_name,
2395                                                ent->subqueryExpression);
2396                     }
2397                     if (ent->subqueryInterpretation)
2398                     {
2399                         char opt_name[80];
2400                         sprintf(opt_name, "%s.interpretation", pref);
2401                         handle_queryExpression(resultset->options, opt_name,
2402                                                ent->subqueryInterpretation);
2403                     }
2404                     if (ent->subqueryRecommendation)
2405                     {
2406                         char opt_name[80];
2407                         sprintf(opt_name, "%s.recommendation", pref);
2408                         handle_queryExpression(resultset->options, opt_name,
2409                                                ent->subqueryRecommendation);
2410                     }
2411                     if (ent->subqueryCount)
2412                     {
2413                         char opt_name[80];
2414                         sprintf(opt_name, "%s.count", pref);
2415                         ZOOM_options_set_int(resultset->options, opt_name,
2416                                              *ent->subqueryCount);
2417                     }
2418                 }
2419             }
2420         }
2421     }
2422 }
2423
2424 static void handle_search_response(ZOOM_connection c, Z_SearchResponse *sr)
2425 {
2426     ZOOM_resultset resultset;
2427     ZOOM_Event event;
2428
2429     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
2430         return ;
2431
2432     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
2433     ZOOM_connection_put_event(c, event);
2434
2435     resultset = c->tasks->u.search.resultset;
2436
2437     if (sr->resultSetStatus)
2438     {
2439         ZOOM_options_set_int(resultset->options, "resultSetStatus",
2440                              *sr->resultSetStatus);
2441     }
2442     if (sr->presentStatus)
2443     {
2444         ZOOM_options_set_int(resultset->options, "presentStatus",
2445                              *sr->presentStatus);
2446     }
2447     handle_searchResult(c, resultset, sr->additionalSearchInfo);
2448
2449     resultset->size = *sr->resultCount;
2450     handle_records(c, sr->records, 0);
2451 }
2452
2453 static void sort_response(ZOOM_connection c, Z_SortResponse *res)
2454 {
2455     if (res->diagnostics && res->num_diagnostics > 0)
2456         response_diag(c, res->diagnostics[0]);
2457 }
2458
2459 static int scan_response(ZOOM_connection c, Z_ScanResponse *res)
2460 {
2461     NMEM nmem = odr_extract_mem(c->odr_in);
2462     ZOOM_scanset scan;
2463
2464     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
2465         return 0;
2466     scan = c->tasks->u.scan.scan;
2467
2468     if (res->entries && res->entries->nonsurrogateDiagnostics)
2469         response_diag(c, res->entries->nonsurrogateDiagnostics[0]);
2470     scan->scan_response = res;
2471     nmem_transfer(odr_getmem(scan->odr), nmem);
2472     if (res->stepSize)
2473         ZOOM_options_set_int(scan->options, "stepSize", *res->stepSize);
2474     if (res->positionOfTerm)
2475         ZOOM_options_set_int(scan->options, "position", *res->positionOfTerm);
2476     if (res->scanStatus)
2477         ZOOM_options_set_int(scan->options, "scanStatus", *res->scanStatus);
2478     if (res->numberOfEntriesReturned)
2479         ZOOM_options_set_int(scan->options, "number",
2480                              *res->numberOfEntriesReturned);
2481     nmem_destroy(nmem);
2482     return 1;
2483 }
2484
2485 static zoom_ret send_sort(ZOOM_connection c,
2486                           ZOOM_resultset resultset)
2487 {
2488     if (c->error)
2489         resultset->r_sort_spec = 0;
2490     if (resultset->r_sort_spec)
2491     {
2492         Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_sortRequest);
2493         Z_SortRequest *req = apdu->u.sortRequest;
2494
2495         req->num_inputResultSetNames = 1;
2496         req->inputResultSetNames = (Z_InternationalString **)
2497             odr_malloc(c->odr_out, sizeof(*req->inputResultSetNames));
2498         req->inputResultSetNames[0] =
2499             odr_strdup(c->odr_out, resultset->setname);
2500         req->sortedResultSetName = odr_strdup(c->odr_out, resultset->setname);
2501         req->sortSequence = resultset->r_sort_spec;
2502         resultset->r_sort_spec = 0;
2503         return send_APDU(c, apdu);
2504     }
2505     return zoom_complete;
2506 }
2507
2508 static zoom_ret send_present(ZOOM_connection c)
2509 {
2510     Z_APDU *apdu = 0;
2511     Z_PresentRequest *req = 0;
2512     int i = 0;
2513     const char *syntax = 0;
2514     const char *elementSetName = 0;
2515     ZOOM_resultset  resultset;
2516     int *start, *count;
2517
2518     if (!c->tasks)
2519     {
2520         yaz_log(log_details, "%p send_present no tasks", c);
2521         return zoom_complete;
2522     }
2523
2524     switch (c->tasks->which)
2525     {
2526     case ZOOM_TASK_SEARCH:
2527         resultset = c->tasks->u.search.resultset;
2528         start = &c->tasks->u.search.start;
2529         count = &c->tasks->u.search.count;
2530         syntax = c->tasks->u.search.syntax;
2531         elementSetName = c->tasks->u.search.elementSetName;
2532         break;
2533     case ZOOM_TASK_RETRIEVE:
2534         resultset = c->tasks->u.retrieve.resultset;
2535         start = &c->tasks->u.retrieve.start;
2536         count = &c->tasks->u.retrieve.count;
2537         syntax = c->tasks->u.retrieve.syntax;
2538         elementSetName = c->tasks->u.retrieve.elementSetName;
2539         break;
2540     default:
2541         return zoom_complete;
2542     }
2543     yaz_log(log_details, "%p send_present start=%d count=%d",
2544             c, *start, *count);
2545
2546     if (*start < 0 || *count < 0 || *start + *count > resultset->size)
2547     {
2548         set_dset_error(c, YAZ_BIB1_PRESENT_REQUEST_OUT_OF_RANGE, "Bib-1",
2549                        "", 0);
2550     }
2551     if (c->error)                  /* don't continue on error */
2552         return zoom_complete;
2553     yaz_log(log_details, "send_present resultset=%p start=%d count=%d",
2554             resultset, *start, *count);
2555
2556     for (i = 0; i < *count; i++)
2557     {
2558         ZOOM_record rec =
2559             record_cache_lookup(resultset, i + *start, syntax, elementSetName);
2560         if (!rec)
2561             break;
2562         else
2563         {
2564             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
2565             ZOOM_connection_put_event(c, event);
2566         }
2567     }
2568     *start += i;
2569     *count -= i;
2570
2571     if (*count == 0)
2572     {
2573         yaz_log(log_details, "%p send_present skip=%d no more to fetch", c, i);
2574         return zoom_complete;
2575     }
2576
2577     apdu = zget_APDU(c->odr_out, Z_APDU_presentRequest);
2578     req = apdu->u.presentRequest;
2579
2580     if (i)
2581         yaz_log(log_details, "%p send_present skip=%d", c, i);
2582
2583     *req->resultSetStartPoint = *start + 1;
2584     *req->numberOfRecordsRequested = resultset->step>0 ?
2585         resultset->step : *count;
2586     if (*req->numberOfRecordsRequested + *start > resultset->size)
2587         *req->numberOfRecordsRequested = resultset->size - *start;
2588     assert(*req->numberOfRecordsRequested > 0);
2589
2590     if (syntax && *syntax)
2591         req->preferredRecordSyntax =
2592             zoom_yaz_str_to_z3950oid(c, CLASS_RECSYN, syntax);
2593
2594     if (resultset->schema && *resultset->schema)
2595     {
2596         Z_RecordComposition *compo = (Z_RecordComposition *)
2597             odr_malloc(c->odr_out, sizeof(*compo));
2598
2599         req->recordComposition = compo;
2600         compo->which = Z_RecordComp_complex;
2601         compo->u.complex = (Z_CompSpec *)
2602             odr_malloc(c->odr_out, sizeof(*compo->u.complex));
2603         compo->u.complex->selectAlternativeSyntax = (bool_t *)
2604             odr_malloc(c->odr_out, sizeof(bool_t));
2605         *compo->u.complex->selectAlternativeSyntax = 0;
2606
2607         compo->u.complex->generic = (Z_Specification *)
2608             odr_malloc(c->odr_out, sizeof(*compo->u.complex->generic));
2609
2610         compo->u.complex->generic->which = Z_Schema_oid;
2611         compo->u.complex->generic->schema.oid = (Odr_oid *)
2612             zoom_yaz_str_to_z3950oid (c, CLASS_SCHEMA, resultset->schema);
2613
2614         if (!compo->u.complex->generic->schema.oid)
2615         {
2616             /* OID wasn't a schema! Try record syntax instead. */
2617
2618             compo->u.complex->generic->schema.oid = (Odr_oid *)
2619                 zoom_yaz_str_to_z3950oid (c, CLASS_RECSYN, resultset->schema);
2620         }
2621         if (elementSetName && *elementSetName)
2622         {
2623             compo->u.complex->generic->elementSpec = (Z_ElementSpec *)
2624                 odr_malloc(c->odr_out, sizeof(Z_ElementSpec));
2625             compo->u.complex->generic->elementSpec->which =
2626                 Z_ElementSpec_elementSetName;
2627             compo->u.complex->generic->elementSpec->u.elementSetName =
2628                 odr_strdup(c->odr_out, elementSetName);
2629         }
2630         else
2631             compo->u.complex->generic->elementSpec = 0;
2632         compo->u.complex->num_dbSpecific = 0;
2633         compo->u.complex->dbSpecific = 0;
2634         compo->u.complex->num_recordSyntax = 0;
2635         compo->u.complex->recordSyntax = 0;
2636     }
2637     else if (elementSetName && *elementSetName)
2638     {
2639         Z_ElementSetNames *esn = (Z_ElementSetNames *)
2640             odr_malloc(c->odr_out, sizeof(*esn));
2641         Z_RecordComposition *compo = (Z_RecordComposition *)
2642             odr_malloc(c->odr_out, sizeof(*compo));
2643
2644         esn->which = Z_ElementSetNames_generic;
2645         esn->u.generic = odr_strdup(c->odr_out, elementSetName);
2646         compo->which = Z_RecordComp_simple;
2647         compo->u.simple = esn;
2648         req->recordComposition = compo;
2649     }
2650     req->resultSetId = odr_strdup(c->odr_out, resultset->setname);
2651     return send_APDU(c, apdu);
2652 }
2653
2654 ZOOM_API(ZOOM_scanset)
2655     ZOOM_connection_scan(ZOOM_connection c, const char *start)
2656 {
2657     ZOOM_scanset s;
2658     ZOOM_query q = ZOOM_query_create();
2659
2660     ZOOM_query_prefix(q, start);
2661
2662     s = ZOOM_connection_scan1(c, q);
2663     ZOOM_query_destroy(q);
2664     return s;
2665
2666 }
2667
2668 ZOOM_API(ZOOM_scanset)
2669     ZOOM_connection_scan1(ZOOM_connection c, ZOOM_query q)
2670 {
2671     char *start;
2672     char *freeme = 0;
2673     ZOOM_scanset scan = 0;
2674
2675     /*
2676      * We need to check the query-type, so we can recognise CQL and
2677      * CCL and compile them into a form that we can use here.  The
2678      * ZOOM_query structure has no explicit `type' member, but
2679      * inspection of the ZOOM_query_prefix() and ZOOM_query_cql()
2680      * functions shows how the structure is set up in each case.
2681      */
2682     if (!q->z_query)
2683         return 0;
2684     else if (q->z_query->which == Z_Query_type_1)
2685     {
2686         yaz_log(log_api, "%p ZOOM_connection_scan1 q=%p PQF '%s'",
2687                 c, q, q->query_string);
2688         start = q->query_string;
2689     }
2690     else if (q->z_query->which == Z_Query_type_104)
2691     {
2692         yaz_log(log_api, "%p ZOOM_connection_scan1 q=%p CQL '%s'",
2693                 c, q, q->query_string);
2694         start = freeme = cql2pqf(c, q->query_string);
2695         if (start == 0)
2696             return 0;
2697     }
2698     else
2699     {
2700         yaz_log(YLOG_FATAL, "%p ZOOM_connection_scan1 q=%p unknown type '%s'",
2701                 c, q, q->query_string);
2702         abort();
2703     }
2704
2705     scan = (ZOOM_scanset) xmalloc(sizeof(*scan));
2706     scan->connection = c;
2707     scan->odr = odr_createmem(ODR_DECODE);
2708     scan->options = ZOOM_options_create_with_parent(c->options);
2709     scan->refcount = 1;
2710     scan->scan_response = 0;
2711     scan->termListAndStartPoint =
2712         p_query_scan(scan->odr, PROTO_Z3950, &scan->attributeSet, start);
2713     xfree(freeme);
2714
2715     {
2716         const char *cp = ZOOM_options_get(scan->options, "rpnCharset");
2717         if (cp)
2718         {
2719             yaz_iconv_t cd = yaz_iconv_open(cp, "UTF-8");
2720             if (cd)
2721             {
2722                 yaz_query_charset_convert_apt(scan->termListAndStartPoint,
2723                                               scan->odr, cd);
2724             }
2725         }
2726     }
2727
2728
2729     scan->databaseNames = set_DatabaseNames(c, c->options,
2730                                             &scan->num_databaseNames,
2731                                             scan->odr);
2732     if (scan->termListAndStartPoint != 0)
2733     {
2734         ZOOM_task task = ZOOM_connection_add_task(c, ZOOM_TASK_SCAN);
2735         task->u.scan.scan = scan;
2736
2737         (scan->refcount)++;
2738         if (!c->async)
2739         {
2740             while (ZOOM_event(1, &c))
2741                 ;
2742         }
2743     }
2744     return scan;
2745 }
2746
2747 ZOOM_API(void)
2748     ZOOM_scanset_destroy(ZOOM_scanset scan)
2749 {
2750     if (!scan)
2751         return;
2752     (scan->refcount)--;
2753     if (scan->refcount == 0)
2754     {
2755         odr_destroy(scan->odr);
2756
2757         ZOOM_options_destroy(scan->options);
2758         xfree(scan);
2759     }
2760 }
2761
2762 static zoom_ret send_package(ZOOM_connection c)
2763 {
2764     ZOOM_Event event;
2765
2766     yaz_log(log_details, "%p send_package", c);
2767     if (!c->tasks)
2768         return zoom_complete;
2769     assert (c->tasks->which == ZOOM_TASK_PACKAGE);
2770
2771     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
2772     ZOOM_connection_put_event(c, event);
2773
2774     c->buf_out = c->tasks->u.package->buf_out;
2775     c->len_out = c->tasks->u.package->len_out;
2776
2777     return do_write(c);
2778 }
2779
2780 static zoom_ret send_scan(ZOOM_connection c)
2781 {
2782     ZOOM_scanset scan;
2783     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_scanRequest);
2784     Z_ScanRequest *req = apdu->u.scanRequest;
2785
2786     yaz_log(log_details, "%p send_scan", c);
2787     if (!c->tasks)
2788         return zoom_complete;
2789     assert (c->tasks->which == ZOOM_TASK_SCAN);
2790     scan = c->tasks->u.scan.scan;
2791
2792     req->termListAndStartPoint = scan->termListAndStartPoint;
2793     req->attributeSet = scan->attributeSet;
2794
2795     *req->numberOfTermsRequested =
2796         ZOOM_options_get_int(scan->options, "number", 10);
2797
2798     req->preferredPositionInResponse =
2799         odr_intdup(c->odr_out,
2800                    ZOOM_options_get_int(scan->options, "position", 1));
2801
2802     req->stepSize =
2803         odr_intdup(c->odr_out,
2804                    ZOOM_options_get_int(scan->options, "stepSize", 0));
2805
2806     req->databaseNames = scan->databaseNames;
2807     req->num_databaseNames = scan->num_databaseNames;
2808
2809     return send_APDU(c, apdu);
2810 }
2811
2812 ZOOM_API(size_t)
2813     ZOOM_scanset_size(ZOOM_scanset scan)
2814 {
2815     if (!scan || !scan->scan_response || !scan->scan_response->entries)
2816         return 0;
2817     return scan->scan_response->entries->num_entries;
2818 }
2819
2820 ZOOM_API(const char *)
2821     ZOOM_scanset_term(ZOOM_scanset scan, size_t pos,
2822                       int *occ, int *len)
2823 {
2824     const char *term = 0;
2825     size_t noent = ZOOM_scanset_size(scan);
2826     Z_ScanResponse *res = scan->scan_response;
2827
2828     *len = 0;
2829     *occ = 0;
2830     if (pos >= noent)
2831         return 0;
2832     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2833     {
2834         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2835
2836         if (t->term->which == Z_Term_general)
2837         {
2838             term = (const char *) t->term->u.general->buf;
2839             *len = t->term->u.general->len;
2840         }
2841         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2842     }
2843     return term;
2844 }
2845
2846 ZOOM_API(const char *)
2847     ZOOM_scanset_display_term(ZOOM_scanset scan, size_t pos,
2848                               int *occ, int *len)
2849 {
2850     const char *term = 0;
2851     size_t noent = ZOOM_scanset_size(scan);
2852     Z_ScanResponse *res = scan->scan_response;
2853
2854     *len = 0;
2855     *occ = 0;
2856     if (pos >= noent)
2857         return 0;
2858     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2859     {
2860         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2861
2862         if (t->displayTerm)
2863         {
2864             term = t->displayTerm;
2865             *len = strlen(term);
2866         }
2867         else if (t->term->which == Z_Term_general)
2868         {
2869             term = (const char *) t->term->u.general->buf;
2870             *len = t->term->u.general->len;
2871         }
2872         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2873     }
2874     return term;
2875 }
2876
2877 ZOOM_API(const char *)
2878     ZOOM_scanset_option_get(ZOOM_scanset scan, const char *key)
2879 {
2880     return ZOOM_options_get(scan->options, key);
2881 }
2882
2883 ZOOM_API(void)
2884     ZOOM_scanset_option_set(ZOOM_scanset scan, const char *key,
2885                             const char *val)
2886 {
2887     ZOOM_options_set(scan->options, key, val);
2888 }
2889
2890 static Z_APDU *create_es_package(ZOOM_package p, const Odr_oid *oid)
2891 {
2892     const char *str;
2893     Z_APDU *apdu = zget_APDU(p->odr_out, Z_APDU_extendedServicesRequest);
2894     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2895
2896     *req->function = Z_ExtendedServicesRequest_create;
2897
2898     str = ZOOM_options_get(p->options, "package-name");
2899     if (str && *str)
2900         req->packageName = odr_strdup(p->odr_out, str);
2901
2902     str = ZOOM_options_get(p->options, "user-id");
2903     if (str)
2904         req->userId = odr_strdup(p->odr_out, str);
2905
2906     req->packageType = odr_oiddup(p->odr_out, oid);
2907
2908     str = ZOOM_options_get(p->options, "function");
2909     if (str)
2910     {
2911         if (!strcmp (str, "create"))
2912             *req->function = 1;
2913         if (!strcmp (str, "delete"))
2914             *req->function = 2;
2915         if (!strcmp (str, "modify"))
2916             *req->function = 3;
2917     }
2918     return apdu;
2919 }
2920
2921 static const char *ill_array_lookup(void *clientData, const char *idx)
2922 {
2923     ZOOM_package p = (ZOOM_package) clientData;
2924     return ZOOM_options_get(p->options, idx+4);
2925 }
2926
2927 static Z_External *encode_ill_request(ZOOM_package p)
2928 {
2929     ODR out = p->odr_out;
2930     ILL_Request *req;
2931     Z_External *r = 0;
2932     struct ill_get_ctl ctl;
2933
2934     ctl.odr = p->odr_out;
2935     ctl.clientData = p;
2936     ctl.f = ill_array_lookup;
2937
2938     req = ill_get_ILLRequest(&ctl, "ill", 0);
2939
2940     if (!ill_Request(out, &req, 0, 0))
2941     {
2942         int ill_request_size;
2943         char *ill_request_buf = odr_getbuf(out, &ill_request_size, 0);
2944         if (ill_request_buf)
2945             odr_setbuf(out, ill_request_buf, ill_request_size, 1);
2946         return 0;
2947     }
2948     else
2949     {
2950         int illRequest_size = 0;
2951         char *illRequest_buf = odr_getbuf(out, &illRequest_size, 0);
2952
2953         r = (Z_External *) odr_malloc(out, sizeof(*r));
2954         r->direct_reference = odr_oiddup(out, yaz_oid_general_isoill_1);
2955         r->indirect_reference = 0;
2956         r->descriptor = 0;
2957         r->which = Z_External_single;
2958
2959         r->u.single_ASN1_type =
2960             odr_create_Odr_oct(out,
2961                                (unsigned char *)illRequest_buf,
2962                                illRequest_size);
2963     }
2964     return r;
2965 }
2966
2967 static Z_ItemOrder *encode_item_order(ZOOM_package p)
2968 {
2969     Z_ItemOrder *req = (Z_ItemOrder *) odr_malloc(p->odr_out, sizeof(*req));
2970     const char *str;
2971
2972     req->which = Z_IOItemOrder_esRequest;
2973     req->u.esRequest = (Z_IORequest *)
2974         odr_malloc(p->odr_out,sizeof(Z_IORequest));
2975
2976     /* to keep part ... */
2977     req->u.esRequest->toKeep = (Z_IOOriginPartToKeep *)
2978         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartToKeep));
2979     req->u.esRequest->toKeep->supplDescription = 0;
2980     req->u.esRequest->toKeep->contact = (Z_IOContact *)
2981         odr_malloc(p->odr_out, sizeof(*req->u.esRequest->toKeep->contact));
2982
2983     str = ZOOM_options_get(p->options, "contact-name");
2984     req->u.esRequest->toKeep->contact->name = str ?
2985         odr_strdup(p->odr_out, str) : 0;
2986
2987     str = ZOOM_options_get(p->options, "contact-phone");
2988     req->u.esRequest->toKeep->contact->phone = str ?
2989         odr_strdup(p->odr_out, str) : 0;
2990
2991     str = ZOOM_options_get(p->options, "contact-email");
2992     req->u.esRequest->toKeep->contact->email = str ?
2993         odr_strdup(p->odr_out, str) : 0;
2994
2995     req->u.esRequest->toKeep->addlBilling = 0;
2996
2997     /* not to keep part ... */
2998     req->u.esRequest->notToKeep = (Z_IOOriginPartNotToKeep *)
2999         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartNotToKeep));
3000
3001     str = ZOOM_options_get(p->options, "itemorder-setname");
3002     if (!str)
3003         str = "default";
3004
3005     if (!*str)
3006         req->u.esRequest->notToKeep->resultSetItem = 0;
3007     else
3008     {
3009         req->u.esRequest->notToKeep->resultSetItem = (Z_IOResultSetItem *)
3010             odr_malloc(p->odr_out, sizeof(Z_IOResultSetItem));
3011
3012         req->u.esRequest->notToKeep->resultSetItem->resultSetId =
3013             odr_strdup(p->odr_out, str);
3014         req->u.esRequest->notToKeep->resultSetItem->item =
3015             (int *) odr_malloc(p->odr_out, sizeof(int));
3016
3017         str = ZOOM_options_get(p->options, "itemorder-item");
3018         *req->u.esRequest->notToKeep->resultSetItem->item =
3019             (str ? atoi(str) : 1);
3020     }
3021
3022     str = ZOOM_options_get(p->options, "doc");
3023     if (str)
3024     {
3025         req->u.esRequest->notToKeep->itemRequest =
3026             z_ext_record_xml(p->odr_out, str, strlen(str));
3027     }
3028     else
3029         req->u.esRequest->notToKeep->itemRequest = encode_ill_request(p);
3030
3031     return req;
3032 }
3033
3034 Z_APDU *create_admin_package(ZOOM_package p, int type,
3035                              Z_ESAdminOriginPartToKeep **toKeepP,
3036                              Z_ESAdminOriginPartNotToKeep **notToKeepP)
3037 {
3038     Z_APDU *apdu = create_es_package(p, yaz_oid_extserv_admin);
3039     if (apdu)
3040     {
3041         Z_ESAdminOriginPartToKeep  *toKeep;
3042         Z_ESAdminOriginPartNotToKeep  *notToKeep;
3043         Z_External *r = (Z_External *) odr_malloc(p->odr_out, sizeof(*r));
3044         const char *first_db = "Default";
3045         int num_db;
3046         char **db = set_DatabaseNames(p->connection, p->options, &num_db,
3047                                       p->odr_out);
3048         if (num_db > 0)
3049             first_db = db[0];
3050
3051         r->direct_reference = odr_oiddup(p->odr_out, yaz_oid_extserv_admin);
3052         r->descriptor = 0;
3053         r->indirect_reference = 0;
3054         r->which = Z_External_ESAdmin;
3055
3056         r->u.adminService = (Z_Admin *)
3057             odr_malloc(p->odr_out, sizeof(*r->u.adminService));
3058         r->u.adminService->which = Z_Admin_esRequest;
3059         r->u.adminService->u.esRequest = (Z_AdminEsRequest *)
3060             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest));
3061
3062         toKeep = r->u.adminService->u.esRequest->toKeep =
3063             (Z_ESAdminOriginPartToKeep *)
3064             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest->toKeep));
3065         toKeep->which = type;
3066         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
3067         toKeep->u.create = odr_nullval();
3068         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3069
3070         r->u.adminService->u.esRequest->notToKeep = notToKeep =
3071             (Z_ESAdminOriginPartNotToKeep *)
3072             odr_malloc(p->odr_out,
3073                        sizeof(*r->u.adminService->u.esRequest->notToKeep));
3074         notToKeep->which = Z_ESAdminOriginPartNotToKeep_recordsWillFollow;
3075         notToKeep->u.recordsWillFollow = odr_nullval();
3076         if (toKeepP)
3077             *toKeepP = toKeep;
3078         if (notToKeepP)
3079             *notToKeepP = notToKeep;
3080     }
3081     return apdu;
3082 }
3083
3084 static Z_APDU *create_xmlupdate_package(ZOOM_package p)
3085 {
3086     Z_APDU *apdu = create_es_package(p, yaz_oid_extserv_xml_es);
3087     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
3088     Z_External *ext = (Z_External *) odr_malloc(p->odr_out, sizeof(*ext));
3089     const char *doc = ZOOM_options_get(p->options, "doc");
3090
3091     if (!doc)
3092         doc = "";
3093
3094     req->taskSpecificParameters = ext;
3095     ext->direct_reference = req->packageType;
3096     ext->descriptor = 0;
3097     ext->indirect_reference = 0;
3098
3099     ext->which = Z_External_octet;
3100     ext->u.single_ASN1_type =
3101         odr_create_Odr_oct(p->odr_out, (const unsigned char *) doc,
3102                            strlen(doc));
3103     return apdu;
3104 }
3105
3106 static Z_APDU *create_update_package(ZOOM_package p)
3107 {
3108     Z_APDU *apdu = 0;
3109     const char *first_db = "Default";
3110     int num_db;
3111     char **db = set_DatabaseNames(p->connection, p->options, &num_db, p->odr_out);
3112     const char *action = ZOOM_options_get(p->options, "action");
3113     const char *recordIdOpaque = ZOOM_options_get(p->options, "recordIdOpaque");
3114     const char *recordIdNumber = ZOOM_options_get(p->options, "recordIdNumber");
3115     const char *record_buf = ZOOM_options_get(p->options, "record");
3116     const char *syntax_str = ZOOM_options_get(p->options, "syntax");
3117     int action_no = -1;
3118     Odr_oid *syntax_oid = 0;
3119
3120     if (!syntax_str)
3121         syntax_str = "xml";
3122     if (!record_buf)
3123     {
3124         record_buf = "void";
3125         syntax_str = "SUTRS";
3126     }
3127
3128     if (syntax_str)
3129     {
3130         syntax_oid = yaz_string_to_oid_odr(yaz_oid_std(),
3131                                            CLASS_RECSYN, syntax_str,
3132                                            p->odr_out);
3133     }
3134     if (!syntax_oid)
3135         return 0;
3136
3137     if (num_db > 0)
3138         first_db = db[0];
3139
3140     if (!action)
3141         action = "specialUpdate";
3142
3143     if (!strcmp(action, "recordInsert"))
3144         action_no = Z_IUOriginPartToKeep_recordInsert;
3145     else if (!strcmp(action, "recordReplace"))
3146         action_no = Z_IUOriginPartToKeep_recordReplace;
3147     else if (!strcmp(action, "recordDelete"))
3148         action_no = Z_IUOriginPartToKeep_recordDelete;
3149     else if (!strcmp(action, "elementUpdate"))
3150         action_no = Z_IUOriginPartToKeep_elementUpdate;
3151     else if (!strcmp(action, "specialUpdate"))
3152         action_no = Z_IUOriginPartToKeep_specialUpdate;
3153     else
3154         return 0;
3155
3156     apdu = create_es_package(p, yaz_oid_extserv_database_update);
3157     if (apdu)
3158     {
3159         Z_IUOriginPartToKeep *toKeep;
3160         Z_IUSuppliedRecords *notToKeep;
3161         Z_External *r = (Z_External *)
3162             odr_malloc(p->odr_out, sizeof(*r));
3163
3164         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3165
3166
3167         r->direct_reference = odr_oiddup(p->odr_out,
3168                                          yaz_oid_extserv_database_update);
3169         r->descriptor = 0;
3170         r->which = Z_External_update;
3171         r->indirect_reference = 0;
3172         r->u.update = (Z_IUUpdate *)
3173             odr_malloc(p->odr_out, sizeof(*r->u.update));
3174
3175         r->u.update->which = Z_IUUpdate_esRequest;
3176         r->u.update->u.esRequest = (Z_IUUpdateEsRequest *)
3177             odr_malloc(p->odr_out, sizeof(*r->u.update->u.esRequest));
3178         toKeep = r->u.update->u.esRequest->toKeep =
3179             (Z_IUOriginPartToKeep *)
3180             odr_malloc(p->odr_out, sizeof(*toKeep));
3181
3182         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
3183         toKeep->schema = 0;
3184         toKeep->elementSetName = 0;
3185         toKeep->actionQualifier = 0;
3186         toKeep->action = odr_intdup(p->odr_out, action_no);
3187
3188         notToKeep = r->u.update->u.esRequest->notToKeep =
3189             (Z_IUSuppliedRecords *)
3190             odr_malloc(p->odr_out, sizeof(*notToKeep));
3191         notToKeep->num = 1;
3192         notToKeep->elements = (Z_IUSuppliedRecords_elem **)
3193             odr_malloc(p->odr_out, sizeof(*notToKeep->elements));
3194         notToKeep->elements[0] = (Z_IUSuppliedRecords_elem *)
3195             odr_malloc(p->odr_out, sizeof(**notToKeep->elements));
3196         notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_opaque;
3197         if (recordIdOpaque)
3198         {
3199             notToKeep->elements[0]->u.opaque =
3200                 odr_create_Odr_oct(p->odr_out,
3201                                    (const unsigned char *) recordIdOpaque,
3202                                    strlen(recordIdOpaque));
3203         }
3204         else if (recordIdNumber)
3205         {
3206             notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_number;
3207
3208             notToKeep->elements[0]->u.number =
3209                 odr_intdup(p->odr_out, atoi(recordIdNumber));
3210         }
3211         else
3212             notToKeep->elements[0]->u.opaque = 0;
3213         notToKeep->elements[0]->supplementalId = 0;
3214         notToKeep->elements[0]->correlationInfo = 0;
3215         notToKeep->elements[0]->record =
3216             z_ext_record_oid(p->odr_out, syntax_oid,
3217                              record_buf, strlen(record_buf));
3218     }
3219     if (0 && apdu)
3220     {
3221         ODR print = odr_createmem(ODR_PRINT);
3222
3223         z_APDU(print, &apdu, 0, 0);
3224         odr_destroy(print);
3225     }
3226     return apdu;
3227 }
3228
3229 ZOOM_API(void)
3230     ZOOM_package_send(ZOOM_package p, const char *type)
3231 {
3232     Z_APDU *apdu = 0;
3233     ZOOM_connection c;
3234     if (!p)
3235         return;
3236     c = p->connection;
3237     odr_reset(p->odr_out);
3238     xfree(p->buf_out);
3239     p->buf_out = 0;
3240     if (!strcmp(type, "itemorder"))
3241     {
3242         apdu = create_es_package(p, yaz_oid_extserv_item_order);
3243         if (apdu)
3244         {
3245             Z_External *r = (Z_External *) odr_malloc(p->odr_out, sizeof(*r));
3246
3247             r->direct_reference =
3248                 odr_oiddup(p->odr_out, yaz_oid_extserv_item_order);
3249             r->descriptor = 0;
3250             r->which = Z_External_itemOrder;
3251             r->indirect_reference = 0;
3252             r->u.itemOrder = encode_item_order(p);
3253
3254             apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3255         }
3256     }
3257     else if (!strcmp(type, "create"))  /* create database */
3258     {
3259         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_create,
3260                                     0, 0);
3261     }
3262     else if (!strcmp(type, "drop"))  /* drop database */
3263     {
3264         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_drop,
3265                                     0, 0);
3266     }
3267     else if (!strcmp(type, "commit"))  /* commit changes */
3268     {
3269         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_commit,
3270                                     0, 0);
3271     }
3272     else if (!strcmp(type, "update")) /* update record(s) */
3273     {
3274         apdu = create_update_package(p);
3275     }
3276     else if (!strcmp(type, "xmlupdate"))
3277     {
3278         apdu = create_xmlupdate_package(p);
3279     }
3280     if (apdu)
3281     {
3282         if (encode_APDU(p->connection, apdu, p->odr_out) == 0)
3283         {
3284             char *buf;
3285
3286             ZOOM_task task = ZOOM_connection_add_task(c, ZOOM_TASK_PACKAGE);
3287             task->u.package = p;
3288             buf = odr_getbuf(p->odr_out, &p->len_out, 0);
3289             p->buf_out = (char *) xmalloc(p->len_out);
3290             memcpy(p->buf_out, buf, p->len_out);
3291
3292             (p->refcount)++;
3293             if (!c->async)
3294             {
3295                 while (ZOOM_event(1, &c))
3296                     ;
3297             }
3298         }
3299     }
3300 }
3301
3302 ZOOM_API(ZOOM_package)
3303     ZOOM_connection_package(ZOOM_connection c, ZOOM_options options)
3304 {
3305     ZOOM_package p = (ZOOM_package) xmalloc(sizeof(*p));
3306
3307     p->connection = c;
3308     p->odr_out = odr_createmem(ODR_ENCODE);
3309     p->options = ZOOM_options_create_with_parent2(options, c->options);
3310     p->refcount = 1;
3311     p->buf_out = 0;
3312     p->len_out = 0;
3313     return p;
3314 }
3315
3316 ZOOM_API(void)
3317     ZOOM_package_destroy(ZOOM_package p)
3318 {
3319     if (!p)
3320         return;
3321     (p->refcount)--;
3322     if (p->refcount == 0)
3323     {
3324         odr_destroy(p->odr_out);
3325         xfree(p->buf_out);
3326
3327         ZOOM_options_destroy(p->options);
3328         xfree(p);
3329     }
3330 }
3331
3332 ZOOM_API(const char *)
3333     ZOOM_package_option_get(ZOOM_package p, const char *key)
3334 {
3335     return ZOOM_options_get(p->options, key);
3336 }
3337
3338
3339 ZOOM_API(void)
3340     ZOOM_package_option_set(ZOOM_package p, const char *key,
3341                             const char *val)
3342 {
3343     ZOOM_options_set(p->options, key, val);
3344 }
3345
3346 static int ZOOM_connection_exec_task(ZOOM_connection c)
3347 {
3348     ZOOM_task task = c->tasks;
3349     zoom_ret ret = zoom_complete;
3350
3351     if (!task)
3352         return 0;
3353     yaz_log(log_details, "%p ZOOM_connection_exec_task type=%d run=%d",
3354             c, task->which, task->running);
3355     if (c->error != ZOOM_ERROR_NONE)
3356     {
3357         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3358                 "removing tasks because of error = %d", c, c->error);
3359         ZOOM_connection_remove_tasks(c);
3360         return 0;
3361     }
3362     if (task->running)
3363     {
3364         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3365                 "task already running", c);
3366         return 0;
3367     }
3368     task->running = 1;
3369     ret = zoom_complete;
3370     if (c->cs || task->which == ZOOM_TASK_CONNECT)
3371     {
3372         switch (task->which)
3373         {
3374         case ZOOM_TASK_SEARCH:
3375             if (c->proto == PROTO_HTTP)
3376                 ret = ZOOM_connection_srw_send_search(c);
3377             else
3378                 ret = ZOOM_connection_send_search(c);
3379             break;
3380         case ZOOM_TASK_RETRIEVE:
3381             if (c->proto == PROTO_HTTP)
3382                 ret = ZOOM_connection_srw_send_search(c);
3383             else
3384                 ret = send_present(c);
3385             break;
3386         case ZOOM_TASK_CONNECT:
3387             ret = do_connect(c);
3388             break;
3389         case ZOOM_TASK_SCAN:
3390             ret = send_scan(c);
3391             break;
3392         case ZOOM_TASK_PACKAGE:
3393             ret = send_package(c);
3394             break;
3395         case ZOOM_TASK_SORT:
3396             c->tasks->u.sort.resultset->r_sort_spec =
3397                 c->tasks->u.sort.q->sort_spec;
3398             ret = send_sort(c, c->tasks->u.sort.resultset);
3399             break;
3400         }
3401     }
3402     else
3403     {
3404         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3405                 "remove tasks because no connection exist", c);
3406         ZOOM_connection_remove_tasks(c);
3407     }
3408     if (ret == zoom_complete)
3409     {
3410         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3411                 "task removed (complete)", c);
3412         ZOOM_connection_remove_task(c);
3413         return 0;
3414     }
3415     yaz_log(log_details, "%p ZOOM_connection_exec_task "
3416             "task pending", c);
3417     return 1;
3418 }
3419
3420 static zoom_ret send_sort_present(ZOOM_connection c)
3421 {
3422     zoom_ret r = zoom_complete;
3423
3424     if (c->tasks && c->tasks->which == ZOOM_TASK_SEARCH)
3425         r = send_sort(c, c->tasks->u.search.resultset);
3426     if (r == zoom_complete)
3427         r = send_present(c);
3428     return r;
3429 }
3430
3431 static int es_response(ZOOM_connection c,
3432                        Z_ExtendedServicesResponse *res)
3433 {
3434     if (!c->tasks || c->tasks->which != ZOOM_TASK_PACKAGE)
3435         return 0;
3436     if (res->diagnostics && res->num_diagnostics > 0)
3437         response_diag(c, res->diagnostics[0]);
3438     if (res->taskPackage &&
3439         res->taskPackage->which == Z_External_extendedService)
3440     {
3441         Z_TaskPackage *taskPackage = res->taskPackage->u.extendedService;
3442         Odr_oct *id = taskPackage->targetReference;
3443
3444         if (id)
3445             ZOOM_options_setl(c->tasks->u.package->options,
3446                               "targetReference", (char*) id->buf, id->len);
3447     }
3448     if (res->taskPackage &&
3449         res->taskPackage->which == Z_External_octet)
3450     {
3451         Odr_oct *doc = res->taskPackage->u.octet_aligned;
3452         ZOOM_options_setl(c->tasks->u.package->options,
3453                           "xmlUpdateDoc", (char*) doc->buf, doc->len);
3454     }
3455     return 1;
3456 }
3457
3458 static void interpret_init_diag(ZOOM_connection c,
3459                                 Z_DiagnosticFormat *diag)
3460 {
3461     if (diag->num > 0)
3462     {
3463         Z_DiagnosticFormat_s *ds = diag->elements[0];
3464         if (ds->which == Z_DiagnosticFormat_s_defaultDiagRec)
3465             response_default_diag(c, ds->u.defaultDiagRec);
3466     }
3467 }
3468
3469
3470 static void interpret_otherinformation_field(ZOOM_connection c,
3471                                              Z_OtherInformation *ui)
3472 {
3473     int i;
3474     for (i = 0; i < ui->num_elements; i++)
3475     {
3476         Z_OtherInformationUnit *unit = ui->list[i];
3477         if (unit->which == Z_OtherInfo_externallyDefinedInfo &&
3478             unit->information.externallyDefinedInfo &&
3479             unit->information.externallyDefinedInfo->which ==
3480             Z_External_diag1)
3481         {
3482             interpret_init_diag(c, unit->information.externallyDefinedInfo->u.diag1);
3483         }
3484     }
3485 }
3486
3487
3488 static void set_init_option(const char *name, void *clientData) {
3489     ZOOM_connection c = (ZOOM_connection) clientData;
3490     char buf[80];
3491
3492     sprintf(buf, "init_opt_%.70s", name);
3493     ZOOM_connection_option_set(c, buf, "1");
3494 }
3495
3496
3497 static void recv_apdu(ZOOM_connection c, Z_APDU *apdu)
3498 {
3499     Z_InitResponse *initrs;
3500
3501     ZOOM_connection_set_mask(c, 0);
3502     yaz_log(log_details, "%p recv_apdu apdu->which=%d", c, apdu->which);
3503     switch(apdu->which)
3504     {
3505     case Z_APDU_initResponse:
3506         yaz_log(log_api, "%p recv_apd: Received Init response", c);
3507         initrs = apdu->u.initResponse;
3508         ZOOM_connection_option_set(c, "serverImplementationId",
3509                                    initrs->implementationId ?
3510                                    initrs->implementationId : "");
3511         ZOOM_connection_option_set(c, "serverImplementationName",
3512                                    initrs->implementationName ?
3513                                    initrs->implementationName : "");
3514         ZOOM_connection_option_set(c, "serverImplementationVersion",
3515                                    initrs->implementationVersion ?
3516                                    initrs->implementationVersion : "");
3517         /* Set the three old options too, for old applications */
3518         ZOOM_connection_option_set(c, "targetImplementationId",
3519                                    initrs->implementationId ?
3520                                    initrs->implementationId : "");
3521         ZOOM_connection_option_set(c, "targetImplementationName",
3522                                    initrs->implementationName ?
3523                                    initrs->implementationName : "");
3524         ZOOM_connection_option_set(c, "targetImplementationVersion",
3525                                    initrs->implementationVersion ?
3526                                    initrs->implementationVersion : "");
3527
3528         /* Make initrs->options available as ZOOM-level options */
3529         yaz_init_opt_decode(initrs->options, set_init_option, (void*) c);
3530
3531         if (!*initrs->result)
3532         {
3533             Z_External *uif = initrs->userInformationField;
3534
3535             set_ZOOM_error(c, ZOOM_ERROR_INIT, 0); /* default error */
3536
3537             if (uif && uif->which == Z_External_userInfo1)
3538                 interpret_otherinformation_field(c, uif->u.userInfo1);
3539         }
3540         else
3541         {
3542             char *cookie =
3543                 yaz_oi_get_string_oid(&apdu->u.initResponse->otherInfo,
3544                                       yaz_oid_userinfo_cookie, 1, 0);
3545             xfree(c->cookie_in);
3546             c->cookie_in = 0;
3547             if (cookie)
3548                 c->cookie_in = xstrdup(cookie);
3549             if (ODR_MASK_GET(initrs->options, Z_Options_namedResultSets) &&
3550                 ODR_MASK_GET(initrs->protocolVersion, Z_ProtocolVersion_3))
3551                 c->support_named_resultsets = 1;
3552             if (c->tasks)
3553             {
3554                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
3555                 ZOOM_connection_remove_task(c);
3556             }
3557             ZOOM_connection_exec_task(c);
3558         }
3559         if (ODR_MASK_GET(initrs->options, Z_Options_negotiationModel))
3560         {
3561             NMEM tmpmem = nmem_create();
3562             Z_CharSetandLanguageNegotiation *p =
3563                 yaz_get_charneg_record(initrs->otherInfo);
3564
3565             if (p)
3566             {
3567                 char *charset = NULL, *lang = NULL;
3568                 int sel;
3569
3570                 yaz_get_response_charneg(tmpmem, p, &charset, &lang, &sel);
3571                 yaz_log(log_details, "%p recv_apdu target accepted: "
3572                         "charset %s, language %s, select %d",
3573                         c,
3574                         charset ? charset : "none", lang ? lang : "none", sel);
3575                 if (charset)
3576                     ZOOM_connection_option_set(c, "negotiation-charset",
3577                                                charset);
3578                 if (lang)
3579                     ZOOM_connection_option_set(c, "negotiation-lang",
3580                                                lang);
3581
3582                 ZOOM_connection_option_set(
3583                     c,  "negotiation-charset-in-effect-for-records",
3584                     (sel != 0) ? "1" : "0");
3585                 nmem_destroy(tmpmem);
3586             }
3587         }
3588         break;
3589     case Z_APDU_searchResponse:
3590         yaz_log(log_api, "%p recv_apdu Search response", c);
3591         handle_search_response(c, apdu->u.searchResponse);
3592         if (send_sort_present(c) == zoom_complete)
3593             ZOOM_connection_remove_task(c);
3594         break;
3595     case Z_APDU_presentResponse:
3596         yaz_log(log_api, "%p recv_apdu Present response", c);
3597         handle_present_response(c, apdu->u.presentResponse);
3598         if (send_present(c) == zoom_complete)
3599             ZOOM_connection_remove_task(c);
3600         break;
3601     case Z_APDU_sortResponse:
3602         yaz_log(log_api, "%p recv_apdu Sort response", c);
3603         sort_response(c, apdu->u.sortResponse);
3604         if (send_present(c) == zoom_complete)
3605             ZOOM_connection_remove_task(c);
3606         break;
3607     case Z_APDU_scanResponse:
3608         yaz_log(log_api, "%p recv_apdu Scan response", c);
3609         scan_response(c, apdu->u.scanResponse);
3610         ZOOM_connection_remove_task(c);
3611         break;
3612     case Z_APDU_extendedServicesResponse:
3613         yaz_log(log_api, "%p recv_apdu Extended Services response", c);
3614         es_response(c, apdu->u.extendedServicesResponse);
3615         ZOOM_connection_remove_task(c);
3616         break;
3617     case Z_APDU_close:
3618         yaz_log(log_api, "%p recv_apdu Close PDU", c);
3619         if (!ZOOM_test_reconnect(c))
3620         {
3621             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3622             do_close(c);
3623         }
3624         break;
3625     default:
3626         yaz_log(log_api, "%p Received unknown PDU", c);
3627         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3628         do_close(c);
3629     }
3630 }
3631
3632 #if YAZ_HAVE_XML2
3633 static void handle_srw_response(ZOOM_connection c,
3634                                 Z_SRW_searchRetrieveResponse *res)
3635 {
3636     ZOOM_resultset resultset = 0;
3637     int i;
3638     NMEM nmem;
3639     ZOOM_Event event;
3640     int *start;
3641     const char *syntax, *elementSetName;
3642
3643     if (!c->tasks)
3644         return;
3645
3646     switch(c->tasks->which)
3647     {
3648     case ZOOM_TASK_SEARCH:
3649         resultset = c->tasks->u.search.resultset;
3650         start = &c->tasks->u.search.start;
3651         syntax = c->tasks->u.search.syntax;
3652         elementSetName = c->tasks->u.search.elementSetName;
3653         break;
3654     case ZOOM_TASK_RETRIEVE:
3655         resultset = c->tasks->u.retrieve.resultset;
3656         start = &c->tasks->u.retrieve.start;
3657         syntax = c->tasks->u.retrieve.syntax;
3658         elementSetName = c->tasks->u.retrieve.elementSetName;
3659         break;
3660     default:
3661         return;
3662     }
3663     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
3664     ZOOM_connection_put_event(c, event);
3665
3666     resultset->size = 0;
3667
3668     yaz_log(log_details, "%p handle_srw_response got SRW response OK", c);
3669
3670     if (res->numberOfRecords)
3671         resultset->size = *res->numberOfRecords;
3672
3673     for (i = 0; i<res->num_records; i++)
3674     {
3675         int pos;
3676
3677         Z_NamePlusRecord *npr = (Z_NamePlusRecord *)
3678             odr_malloc(c->odr_in, sizeof(Z_NamePlusRecord));
3679
3680         if (res->records[i].recordPosition &&
3681             *res->records[i].recordPosition > 0)
3682             pos = *res->records[i].recordPosition - 1;
3683         else
3684             pos = *start + i;
3685
3686         npr->databaseName = 0;
3687         npr->which = Z_NamePlusRecord_databaseRecord;
3688         npr->u.databaseRecord = (Z_External *)
3689             odr_malloc(c->odr_in, sizeof(Z_External));
3690         npr->u.databaseRecord->descriptor = 0;
3691         npr->u.databaseRecord->direct_reference =
3692             odr_oiddup(c->odr_in, yaz_oid_recsyn_xml);
3693         npr->u.databaseRecord->which = Z_External_octet;
3694
3695         npr->u.databaseRecord->u.octet_aligned = (Odr_oct *)
3696             odr_malloc(c->odr_in, sizeof(Odr_oct));
3697         npr->u.databaseRecord->u.octet_aligned->buf = (unsigned char*)
3698             res->records[i].recordData_buf;
3699         npr->u.databaseRecord->u.octet_aligned->len =
3700             npr->u.databaseRecord->u.octet_aligned->size =
3701             res->records[i].recordData_len;
3702         record_cache_add(resultset, npr, pos, syntax, elementSetName);
3703     }
3704     if (res->num_diagnostics > 0)
3705     {
3706         const char *uri = res->diagnostics[0].uri;
3707         if (uri)
3708         {
3709             int code = 0;
3710             const char *cp;
3711             if ((cp = strrchr(uri, '/')))
3712                 code = atoi(cp+1);
3713             set_dset_error(c, code, uri,
3714                            res->diagnostics[0].details, 0);
3715         }
3716     }
3717     nmem = odr_extract_mem(c->odr_in);
3718     nmem_transfer(odr_getmem(resultset->odr), nmem);
3719     nmem_destroy(nmem);
3720 }
3721 #endif
3722
3723 #if YAZ_HAVE_XML2
3724 static void handle_http(ZOOM_connection c, Z_HTTP_Response *hres)
3725 {
3726     int ret = -1;
3727     const char *addinfo = 0;
3728     const char *connection_head = z_HTTP_header_lookup(hres->headers,
3729                                                        "Connection");
3730     ZOOM_connection_set_mask(c, 0);
3731     yaz_log(log_details, "%p handle_http", c);
3732
3733     if (!yaz_srw_check_content_type(hres))
3734         addinfo = "content-type";
3735     else
3736     {
3737         Z_SOAP *soap_package = 0;
3738         ODR o = c->odr_in;
3739         Z_SOAP_Handler soap_handlers[2] = {
3740             {YAZ_XMLNS_SRU_v1_1, 0, (Z_SOAP_fun) yaz_srw_codec},
3741             {0, 0, 0}
3742         };
3743         ret = z_soap_codec(o, &soap_package,
3744                            &hres->content_buf, &hres->content_len,
3745                            soap_handlers);
3746         if (!ret && soap_package->which == Z_SOAP_generic &&
3747             soap_package->u.generic->no == 0)
3748         {
3749             Z_SRW_PDU *sr = (Z_SRW_PDU*) soap_package->u.generic->p;
3750             if (sr->which == Z_SRW_searchRetrieve_response)
3751                 handle_srw_response(c, sr->u.response);
3752             else
3753                 ret = -1;
3754         }
3755         else if (!ret && (soap_package->which == Z_SOAP_fault
3756                           || soap_package->which == Z_SOAP_error))
3757         {
3758             set_HTTP_error(c, hres->code,
3759                            soap_package->u.fault->fault_code,
3760                            soap_package->u.fault->fault_string);
3761         }
3762         else
3763             ret = -1;
3764     }
3765     if (ret)
3766     {
3767         if (hres->code != 200)
3768             set_HTTP_error(c, hres->code, 0, 0);
3769         else
3770             set_ZOOM_error(c, ZOOM_ERROR_DECODE, addinfo);
3771         do_close(c);
3772     }
3773     ZOOM_connection_remove_task(c);
3774     if (!strcmp(hres->version, "1.0"))
3775     {
3776         /* HTTP 1.0: only if Keep-Alive we stay alive.. */
3777         if (!connection_head || strcmp(connection_head, "Keep-Alive"))
3778             do_close(c);
3779     }
3780     else
3781     {
3782         /* HTTP 1.1: only if no close we stay alive .. */
3783         if (connection_head && !strcmp(connection_head, "close"))
3784             do_close(c);
3785     }
3786 }
3787 #endif
3788
3789 static int do_read(ZOOM_connection c)
3790 {
3791     int r, more;
3792     ZOOM_Event event;
3793
3794     event = ZOOM_Event_create(ZOOM_EVENT_RECV_DATA);
3795     ZOOM_connection_put_event(c, event);
3796
3797     r = cs_get(c->cs, &c->buf_in, &c->len_in);
3798     more = cs_more(c->cs);
3799     yaz_log(log_details, "%p do_read len=%d more=%d", c, r, more);
3800     if (r == 1)
3801         return 0;
3802     if (r <= 0)
3803     {
3804         if (!ZOOM_test_reconnect(c))
3805         {
3806             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3807             do_close(c);
3808         }
3809     }
3810     else
3811     {
3812         Z_GDU *gdu;
3813         ZOOM_Event event;
3814
3815         odr_reset(c->odr_in);
3816         odr_setbuf(c->odr_in, c->buf_in, r, 0);
3817         event = ZOOM_Event_create(ZOOM_EVENT_RECV_APDU);
3818         ZOOM_connection_put_event(c, event);
3819
3820         if (!z_GDU(c->odr_in, &gdu, 0, 0))
3821         {
3822             int x;
3823             int err = odr_geterrorx(c->odr_in, &x);
3824             char msg[60];
3825             const char *element = odr_getelement(c->odr_in);
3826             sprintf(msg, "ODR code %d:%d element=%-20s",
3827                     err, x, element ? element : "<unknown>");
3828             set_ZOOM_error(c, ZOOM_ERROR_DECODE, msg);
3829             do_close(c);
3830         }
3831         else if (gdu->which == Z_GDU_Z3950)
3832             recv_apdu(c, gdu->u.z3950);
3833         else if (gdu->which == Z_GDU_HTTP_Response)
3834         {
3835 #if YAZ_HAVE_XML2
3836             handle_http(c, gdu->u.HTTP_Response);
3837 #else
3838             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3839             do_close(c);
3840 #endif
3841         }
3842         c->reconnect_ok = 0;
3843     }
3844     return 1;
3845 }
3846
3847 static zoom_ret do_write_ex(ZOOM_connection c, char *buf_out, int len_out)
3848 {
3849     int r;
3850     ZOOM_Event event;
3851
3852     event = ZOOM_Event_create(ZOOM_EVENT_SEND_DATA);
3853     ZOOM_connection_put_event(c, event);
3854
3855     yaz_log(log_details, "%p do_write_ex len=%d", c, len_out);
3856     if ((r = cs_put(c->cs, buf_out, len_out)) < 0)
3857     {
3858         yaz_log(log_details, "%p do_write_ex write failed", c);
3859         if (ZOOM_test_reconnect(c))
3860         {
3861             return zoom_pending;
3862         }
3863         if (c->state == STATE_CONNECTING)
3864             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3865         else
3866             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3867         do_close(c);
3868         return zoom_complete;
3869     }
3870     else if (r == 1)
3871     {
3872         int mask = ZOOM_SELECT_EXCEPT;
3873         if (c->cs->io_pending & CS_WANT_WRITE)
3874             mask += ZOOM_SELECT_WRITE;
3875         if (c->cs->io_pending & CS_WANT_READ)
3876             mask += ZOOM_SELECT_READ;
3877         ZOOM_connection_set_mask(c, mask);
3878         yaz_log(log_details, "%p do_write_ex write incomplete mask=%d",
3879                 c, c->mask);
3880     }
3881     else
3882     {
3883         ZOOM_connection_set_mask(c, ZOOM_SELECT_READ|ZOOM_SELECT_EXCEPT);
3884         yaz_log(log_details, "%p do_write_ex write complete mask=%d",
3885                 c, c->mask);
3886     }
3887     return zoom_pending;
3888 }
3889
3890 static zoom_ret do_write(ZOOM_connection c)
3891 {
3892     return do_write_ex(c, c->buf_out, c->len_out);
3893 }
3894
3895
3896 ZOOM_API(const char *)
3897     ZOOM_connection_option_get(ZOOM_connection c, const char *key)
3898 {
3899     return ZOOM_options_get(c->options, key);
3900 }
3901
3902 ZOOM_API(const char *)
3903     ZOOM_connection_option_getl(ZOOM_connection c, const char *key, int *lenp)
3904 {
3905     return ZOOM_options_getl(c->options, key, lenp);
3906 }
3907
3908 ZOOM_API(void)
3909     ZOOM_connection_option_set(ZOOM_connection c, const char *key,
3910                                const char *val)
3911 {
3912     ZOOM_options_set(c->options, key, val);
3913 }
3914
3915 ZOOM_API(void)
3916     ZOOM_connection_option_setl(ZOOM_connection c, const char *key,
3917                                 const char *val, int len)
3918 {
3919     ZOOM_options_setl(c->options, key, val, len);
3920 }
3921
3922 ZOOM_API(const char *)
3923     ZOOM_resultset_option_get(ZOOM_resultset r, const char *key)
3924 {
3925     return ZOOM_options_get(r->options, key);
3926 }
3927
3928 ZOOM_API(void)
3929     ZOOM_resultset_option_set(ZOOM_resultset r, const char *key,
3930                               const char *val)
3931 {
3932     ZOOM_options_set(r->options, key, val);
3933 }
3934
3935
3936 ZOOM_API(int)
3937     ZOOM_connection_errcode(ZOOM_connection c)
3938 {
3939     return ZOOM_connection_error(c, 0, 0);
3940 }
3941
3942 ZOOM_API(const char *)
3943     ZOOM_connection_errmsg(ZOOM_connection c)
3944 {
3945     const char *msg;
3946     ZOOM_connection_error(c, &msg, 0);
3947     return msg;
3948 }
3949
3950 ZOOM_API(const char *)
3951     ZOOM_connection_addinfo(ZOOM_connection c)
3952 {
3953     const char *addinfo;
3954     ZOOM_connection_error(c, 0, &addinfo);
3955     return addinfo;
3956 }
3957
3958 ZOOM_API(const char *)
3959     ZOOM_connection_diagset(ZOOM_connection c)
3960 {
3961     const char *diagset;
3962     ZOOM_connection_error_x(c, 0, 0, &diagset);
3963     return diagset;
3964 }
3965
3966 ZOOM_API(const char *)
3967     ZOOM_diag_str(int error)
3968 {
3969     switch (error)
3970     {
3971     case ZOOM_ERROR_NONE:
3972         return "No error";
3973     case ZOOM_ERROR_CONNECT:
3974         return "Connect failed";
3975     case ZOOM_ERROR_MEMORY:
3976         return "Out of memory";
3977     case ZOOM_ERROR_ENCODE:
3978         return "Encoding failed";
3979     case ZOOM_ERROR_DECODE:
3980         return "Decoding failed";
3981     case ZOOM_ERROR_CONNECTION_LOST:
3982         return "Connection lost";
3983     case ZOOM_ERROR_INIT:
3984         return "Init rejected";
3985     case ZOOM_ERROR_INTERNAL:
3986         return "Internal failure";
3987     case ZOOM_ERROR_TIMEOUT:
3988         return "Timeout";
3989     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
3990         return "Unsupported protocol";
3991     case ZOOM_ERROR_UNSUPPORTED_QUERY:
3992         return "Unsupported query type";
3993     case ZOOM_ERROR_INVALID_QUERY:
3994         return "Invalid query";
3995     case ZOOM_ERROR_CQL_PARSE:
3996         return "CQL parsing error";
3997     case ZOOM_ERROR_CQL_TRANSFORM:
3998         return "CQL transformation error";
3999     case ZOOM_ERROR_CCL_CONFIG:
4000         return "CCL configuration error";
4001     case ZOOM_ERROR_CCL_PARSE:
4002         return "CCL parsing error";
4003     default:
4004         return diagbib1_str(error);
4005     }
4006 }
4007
4008 ZOOM_API(int)
4009     ZOOM_connection_error_x(ZOOM_connection c, const char **cp,
4010                             const char **addinfo, const char **diagset)
4011 {
4012     int error = c->error;
4013     if (cp)
4014     {
4015         if (!c->diagset || !strcmp(c->diagset, "ZOOM"))
4016             *cp = ZOOM_diag_str(error);
4017         else if (!strcmp(c->diagset, "HTTP"))
4018             *cp = z_HTTP_errmsg(c->error);
4019         else if (!strcmp(c->diagset, "Bib-1"))
4020             *cp = ZOOM_diag_str(error);
4021         else if (!strcmp(c->diagset, "info:srw/diagnostic/1"))
4022             *cp = yaz_diag_srw_str(c->error);
4023         else
4024             *cp = "Unknown error and diagnostic set";
4025     }
4026     if (addinfo)
4027         *addinfo = c->addinfo ? c->addinfo : "";
4028     if (diagset)
4029         *diagset = c->diagset ? c->diagset : "";
4030     return c->error;
4031 }
4032
4033 ZOOM_API(int)
4034     ZOOM_connection_error(ZOOM_connection c, const char **cp,
4035                           const char **addinfo)
4036 {
4037     return ZOOM_connection_error_x(c, cp, addinfo, 0);
4038 }
4039
4040 static void ZOOM_connection_do_io(ZOOM_connection c, int mask)
4041 {
4042     ZOOM_Event event = 0;
4043     int r = cs_look(c->cs);
4044     yaz_log(log_details, "%p ZOOM_connection_do_io mask=%d cs_look=%d",
4045             c, mask, r);
4046
4047     if (r == CS_NONE)
4048     {
4049         event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
4050         set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
4051         do_close(c);
4052         ZOOM_connection_put_event(c, event);
4053     }
4054     else if (r == CS_CONNECT)
4055     {
4056         int ret = ret = cs_rcvconnect(c->cs);
4057         yaz_log(log_details, "%p ZOOM_connection_do_io "
4058                 "cs_rcvconnect returned %d", c, ret);
4059         if (ret == 1)
4060         {
4061             int mask = ZOOM_SELECT_EXCEPT;
4062             if (c->cs->io_pending & CS_WANT_WRITE)
4063                 mask += ZOOM_SELECT_WRITE;
4064             if (c->cs->io_pending & CS_WANT_READ)
4065                 mask += ZOOM_SELECT_READ;
4066             ZOOM_connection_set_mask(c, mask);
4067         }
4068         else if (ret == 0)
4069         {
4070             event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
4071             ZOOM_connection_put_event(c, event);
4072             get_cert(c);
4073             if (c->proto == PROTO_Z3950)
4074                 ZOOM_connection_send_init(c);
4075             else
4076             {
4077                 /* no init request for SRW .. */
4078                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
4079                 ZOOM_connection_remove_task(c);
4080                 ZOOM_connection_set_mask(c, 0);
4081                 ZOOM_connection_exec_task(c);
4082             }
4083             c->state = STATE_ESTABLISHED;
4084         }
4085         else
4086         {
4087             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
4088             do_close(c);
4089         }
4090     }
4091     else
4092     {
4093         if (mask & ZOOM_SELECT_EXCEPT)
4094         {
4095             if (!ZOOM_test_reconnect(c))
4096             {
4097                 set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
4098                 do_close(c);
4099             }
4100             return;
4101         }
4102         if (mask & ZOOM_SELECT_READ)
4103             do_read(c);
4104         if (c->cs && (mask & ZOOM_SELECT_WRITE))
4105             do_write(c);
4106     }
4107 }
4108
4109 ZOOM_API(int)
4110     ZOOM_connection_last_event(ZOOM_connection cs)
4111 {
4112     if (!cs)
4113         return ZOOM_EVENT_NONE;
4114     return cs->last_event;
4115 }
4116
4117
4118 static void cql2pqf_wrbuf_puts(const char *buf, void *client_data)
4119 {
4120     WRBUF wrbuf = (WRBUF) client_data;
4121     wrbuf_puts(wrbuf, buf);
4122 }
4123
4124 /*
4125  * Returns an xmalloc()d string containing RPN that corresponds to the
4126  * CQL passed in.  On error, sets the Connection object's error state
4127  * and returns a null pointer.
4128  * ### We could cache CQL parser and/or transformer in Connection.
4129  */
4130 static char *cql2pqf(ZOOM_connection c, const char *cql)
4131 {
4132     CQL_parser parser;
4133     int error;
4134     const char *cqlfile;
4135     cql_transform_t trans;
4136     char *result = 0;
4137
4138     parser = cql_parser_create();
4139     if ((error = cql_parser_string(parser, cql)) != 0) {
4140         cql_parser_destroy(parser);
4141         set_ZOOM_error(c, ZOOM_ERROR_CQL_PARSE, cql);
4142         return 0;
4143     }
4144
4145     cqlfile = ZOOM_connection_option_get(c, "cqlfile");
4146     if (cqlfile == 0)
4147     {
4148         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, "no CQL transform file");
4149     }
4150     else if ((trans = cql_transform_open_fname(cqlfile)) == 0)
4151     {
4152         char buf[512];
4153         sprintf(buf, "can't open CQL transform file '%.200s': %.200s",
4154                 cqlfile, strerror(errno));
4155         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4156     }
4157     else
4158     {
4159         WRBUF wrbuf_result = wrbuf_alloc();
4160         error = cql_transform(trans, cql_parser_result(parser),
4161                               cql2pqf_wrbuf_puts, wrbuf_result);
4162         if (error != 0) {
4163             char buf[512];
4164             const char *addinfo;
4165             error = cql_transform_error(trans, &addinfo);
4166             sprintf(buf, "%.200s (addinfo=%.200s)",
4167                     cql_strerror(error), addinfo);
4168             set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4169         }
4170         else
4171         {
4172             result = xstrdup(wrbuf_cstr(wrbuf_result));
4173         }
4174         cql_transform_close(trans);
4175         wrbuf_destroy(wrbuf_result);
4176     }
4177     cql_parser_destroy(parser);
4178     return result;
4179 }
4180
4181 ZOOM_API(int) ZOOM_connection_fire_event_timeout(ZOOM_connection c)
4182 {
4183     if (c->mask)
4184     {
4185         ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
4186         /* timeout and this connection was waiting */
4187         set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
4188         do_close(c);
4189         ZOOM_connection_put_event(c, event);
4190     }
4191     return 0;
4192 }
4193
4194 ZOOM_API(int)
4195     ZOOM_connection_process(ZOOM_connection c)
4196 {
4197     ZOOM_Event event;
4198     if (!c)
4199         return 0;
4200
4201     event = ZOOM_connection_get_event(c);
4202     if (event)
4203     {
4204         ZOOM_Event_destroy(event);
4205         return 1;
4206     }
4207     ZOOM_connection_exec_task(c);
4208     event = ZOOM_connection_get_event(c);
4209     if (event)
4210     {
4211         ZOOM_Event_destroy(event);
4212         return 1;
4213     }
4214     return 0;
4215 }
4216
4217 ZOOM_API(int)
4218     ZOOM_event_nonblock(int no, ZOOM_connection *cs)
4219 {
4220     int i;
4221
4222     yaz_log(log_details, "ZOOM_process_event(no=%d,cs=%p)", no, cs);
4223
4224     for (i = 0; i<no; i++)
4225     {
4226         ZOOM_connection c = cs[i];
4227
4228         if (c && ZOOM_connection_process(c))
4229             return i+1;
4230     }
4231     return 0;
4232 }
4233
4234 ZOOM_API(int) ZOOM_connection_fire_event_socket(ZOOM_connection c, int mask)
4235 {
4236     if (c->mask && mask)
4237         ZOOM_connection_do_io(c, mask);
4238     return 0;
4239 }
4240
4241 ZOOM_API(int) ZOOM_connection_get_socket(ZOOM_connection c)
4242 {
4243     if (c->cs)
4244         return cs_fileno(c->cs);
4245     return -1;
4246 }
4247
4248 ZOOM_API(int) ZOOM_connection_set_mask(ZOOM_connection c, int mask)
4249 {
4250     c->mask = mask;
4251     if (!c->cs)
4252         return -1;
4253     return 0;
4254 }
4255
4256 ZOOM_API(int) ZOOM_connection_get_mask(ZOOM_connection c)
4257 {
4258     if (c->cs)
4259         return c->mask;
4260     return 0;
4261 }
4262
4263 ZOOM_API(int) ZOOM_connection_get_timeout(ZOOM_connection c)
4264 {
4265     return ZOOM_options_get_int(c->options, "timeout", 30);
4266 }
4267
4268 /*
4269  * Local variables:
4270  * c-basic-offset: 4
4271  * indent-tabs-mode: nil
4272  * End:
4273  * vim: shiftwidth=4 tabstop=8 expandtab
4274  */
4275