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 1.144 2007-08-31 21:23:45 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 #include <yaz/snprintf.h>
  32
  33 static int log_api = 0;
  34 static int log_details = 0;
  35
  36 typedef enum {
  37     zoom_pending,
  38     zoom_complete
  39 } zoom_ret;
  40
  41 static void resultset_destroy(ZOOM_resultset r);
  42 static zoom_ret ZOOM_connection_send_init(ZOOM_connection c);
  43 static zoom_ret do_write_ex(ZOOM_connection c, char *buf_out, int len_out);
  44 static char *cql2pqf(ZOOM_connection c, const char *cql);
  45
  46
  47 /*
  48  * This wrapper is just for logging failed lookups.  It would be nicer
  49  * if it could cause failure when a lookup fails, but that's hard.
  50  */
  51 static Odr_oid *zoom_yaz_str_to_z3950oid(ZOOM_connection c,
  52                                      int oid_class, const char *str) {
  53     Odr_oid *res = yaz_string_to_oid_odr(yaz_oid_std(), oid_class, str,
  54                                      c->odr_out);
  55     if (res == 0)
  56         yaz_log(YLOG_WARN, "%p OID lookup (%d, '%s') failed",
  57                 c, (int) oid_class, str);
  58     return res;
  59 }
  60
  61
  62 static void initlog(void)
  63 {
  64     static int log_level_initialized = 0;
  65     if (!log_level_initialized)
  66     {
  67         log_api = yaz_log_module_level("zoom");
  68         log_details = yaz_log_module_level("zoomdetails");
  69         log_level_initialized = 1;
  70     }
  71 }
  72
  73 static ZOOM_Event ZOOM_Event_create(int kind)
  74 {
  75     ZOOM_Event event = (ZOOM_Event) xmalloc(sizeof(*event));
  76     event->kind = kind;
  77     event->next = 0;
  78     event->prev = 0;
  79     yaz_log(log_details, "ZOOM_Event_create(kind=%d)", kind);
  80     return event;
  81 }
  82
  83 static void ZOOM_Event_destroy(ZOOM_Event event)
  84 {
  85     xfree(event);
  86 }
  87
  88 static void ZOOM_connection_put_event(ZOOM_connection c, ZOOM_Event event)
  89 {
  90     if (c->m_queue_back)
  91     {
  92         c->m_queue_back->prev = event;
  93         assert(c->m_queue_front);
  94     }
  95     else
  96     {
  97         assert(!c->m_queue_front);
  98         c->m_queue_front = event;
  99     }
 100     event->next = c->m_queue_back;
 101     event->prev = 0;
 102     c->m_queue_back = event;
 103 }
 104
 105 static ZOOM_Event ZOOM_connection_get_event(ZOOM_connection c)
 106 {
 107     ZOOM_Event event = c->m_queue_front;
 108     if (!event)
 109     {
 110         c->last_event = ZOOM_EVENT_NONE;
 111         return 0;
 112     }
 113     assert(c->m_queue_back);
 114     c->m_queue_front = event->prev;
 115     if (c->m_queue_front)
 116     {
 117         assert(c->m_queue_back);
 118         c->m_queue_front->next = 0;
 119     }
 120     else
 121         c->m_queue_back = 0;
 122     c->last_event = event->kind;
 123     return event;
 124 }
 125
 126 static void ZOOM_connection_remove_events(ZOOM_connection c)
 127 {
 128     ZOOM_Event event;
 129     while ((event = ZOOM_connection_get_event(c)))
 130         ZOOM_Event_destroy(event);
 131 }
 132
 133 ZOOM_API(int) ZOOM_connection_peek_event(ZOOM_connection c)
 134 {
 135     ZOOM_Event event = c->m_queue_front;
 136
 137     return event ? event->kind : ZOOM_EVENT_NONE;
 138 }
 139
 140 void ZOOM_connection_remove_tasks(ZOOM_connection c);
 141
 142 static void set_dset_error(ZOOM_connection c, int error,
 143                            const char *dset,
 144                            const char *addinfo, const char *addinfo2)
 145 {
 146     char *cp;
 147
 148     xfree(c->addinfo);
 149     c->addinfo = 0;
 150     c->error = error;
 151     if (!c->diagset || strcmp(dset, c->diagset))
 152     {
 153         xfree(c->diagset);
 154         c->diagset = xstrdup(dset);
 155         /* remove integer part from SRW diagset .. */
 156         if ((cp = strrchr(c->diagset, '/')))
 157             *cp = '\0';
 158     }
 159     if (addinfo && addinfo2)
 160     {
 161         c->addinfo = (char*) xmalloc(strlen(addinfo) + strlen(addinfo2) + 2);
 162         strcpy(c->addinfo, addinfo);
 163         strcat(c->addinfo, addinfo2);
 164     }
 165     else if (addinfo)
 166         c->addinfo = xstrdup(addinfo);
 167     if (error != ZOOM_ERROR_NONE)
 168     {
 169         yaz_log(log_api, "%p set_dset_error %s %s:%d %s %s",
 170                 c, c->host_port ? c->host_port : "<>", dset, error,
 171                 addinfo ? addinfo : "",
 172                 addinfo2 ? addinfo2 : "");
 173         ZOOM_connection_remove_tasks(c);
 174     }
 175 }
 176
 177 #if YAZ_HAVE_XML2
 178 static void set_HTTP_error(ZOOM_connection c, int error,
 179                            const char *addinfo, const char *addinfo2)
 180 {
 181     set_dset_error(c, error, "HTTP", addinfo, addinfo2);
 182 }
 183
 184 static void set_SRU_error(ZOOM_connection c, Z_SRW_diagnostic *d)
 185 {
 186     const char *uri = d->uri;
 187     if (uri)
 188     {
 189         int code = 0;
 190         const char *cp;
 191         if ((cp = strrchr(uri, '/')))
 192             code = atoi(cp+1);
 193         set_dset_error(c, code, uri, d->details, 0);
 194     }
 195 }
 196
 197 #endif
 198
 199
 200 static void set_ZOOM_error(ZOOM_connection c, int error,
 201                            const char *addinfo)
 202 {
 203     set_dset_error(c, error, "ZOOM", addinfo, 0);
 204 }
 205
 206 static void clear_error(ZOOM_connection c)
 207 {
 208     /*
 209      * If an error is tied to an operation then it's ok to clear: for
 210      * example, a diagnostic returned from a search is cleared by a
 211      * subsequent search.  However, problems such as Connection Lost
 212      * or Init Refused are not cleared, because they are not
 213      * recoverable: doing another search doesn't help.
 214      */
 215
 216     ZOOM_connection_remove_events(c);
 217     switch (c->error)
 218     {
 219     case ZOOM_ERROR_CONNECT:
 220     case ZOOM_ERROR_MEMORY:
 221     case ZOOM_ERROR_DECODE:
 222     case ZOOM_ERROR_CONNECTION_LOST:
 223     case ZOOM_ERROR_INIT:
 224     case ZOOM_ERROR_INTERNAL:
 225     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
 226         break;
 227     default:
 228         set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 229     }
 230 }
 231
 232 void ZOOM_connection_show_task(ZOOM_task task)
 233 {
 234     switch(task->which)
 235     {
 236     case ZOOM_TASK_SEARCH:
 237         yaz_log(YLOG_LOG, "search p=%p", task);
 238         break;
 239     case ZOOM_TASK_RETRIEVE:
 240         yaz_log(YLOG_LOG, "retrieve p=%p", task);
 241         break;
 242     case ZOOM_TASK_CONNECT:
 243         yaz_log(YLOG_LOG, "connect p=%p", task);
 244         break;
 245     case ZOOM_TASK_SCAN:
 246         yaz_log(YLOG_LOG, "scant p=%p", task);
 247         break;
 248     }
 249 }
 250
 251 void ZOOM_connection_show_tasks(ZOOM_connection c)
 252 {
 253     ZOOM_task task;
 254     yaz_log(YLOG_LOG, "connection p=%p tasks", c);
 255     for (task = c->tasks; task; task = task->next)
 256         ZOOM_connection_show_task(task);
 257 }
 258
 259 ZOOM_task ZOOM_connection_add_task(ZOOM_connection c, int which)
 260 {
 261     ZOOM_task *taskp = &c->tasks;
 262     while (*taskp)
 263         taskp = &(*taskp)->next;
 264     *taskp = (ZOOM_task) xmalloc(sizeof(**taskp));
 265     (*taskp)->running = 0;
 266     (*taskp)->which = which;
 267     (*taskp)->next = 0;
 268     clear_error(c);
 269     return *taskp;
 270 }
 271
 272 ZOOM_API(int) ZOOM_connection_is_idle(ZOOM_connection c)
 273 {
 274     return c->tasks ? 0 : 1;
 275 }
 276
 277 ZOOM_task ZOOM_connection_insert_task(ZOOM_connection c, int which)
 278 {
 279     ZOOM_task task = (ZOOM_task) xmalloc(sizeof(*task));
 280
 281     task->next = c->tasks;
 282     c->tasks = task;
 283
 284     task->running = 0;
 285     task->which = which;
 286     clear_error(c);
 287     return task;
 288 }
 289
 290 void ZOOM_connection_remove_task(ZOOM_connection c)
 291 {
 292     ZOOM_task task = c->tasks;
 293
 294     if (task)
 295     {
 296         c->tasks = task->next;
 297         switch (task->which)
 298         {
 299         case ZOOM_TASK_SEARCH:
 300             resultset_destroy(task->u.search.resultset);
 301             xfree(task->u.search.syntax);
 302             xfree(task->u.search.elementSetName);
 303             break;
 304         case ZOOM_TASK_RETRIEVE:
 305             resultset_destroy(task->u.retrieve.resultset);
 306             xfree(task->u.retrieve.syntax);
 307             xfree(task->u.retrieve.elementSetName);
 308             break;
 309         case ZOOM_TASK_CONNECT:
 310             break;
 311         case ZOOM_TASK_SCAN:
 312             ZOOM_scanset_destroy(task->u.scan.scan);
 313             break;
 314         case ZOOM_TASK_PACKAGE:
 315             ZOOM_package_destroy(task->u.package);
 316             break;
 317         case ZOOM_TASK_SORT:
 318             resultset_destroy(task->u.sort.resultset);
 319             ZOOM_query_destroy(task->u.sort.q);
 320             break;
 321         default:
 322             assert(0);
 323         }
 324         xfree(task);
 325
 326         if (!c->tasks)
 327         {
 328             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_END);
 329             ZOOM_connection_put_event(c, event);
 330         }
 331     }
 332 }
 333
 334 static int ZOOM_connection_exec_task(ZOOM_connection c);
 335
 336 void ZOOM_connection_remove_tasks(ZOOM_connection c)
 337 {
 338     while (c->tasks)
 339         ZOOM_connection_remove_task(c);
 340 }
 341
 342 static ZOOM_record record_cache_lookup(ZOOM_resultset r, int pos,
 343                                        const char *syntax,
 344                                        const char *elementSetName);
 345
 346 ZOOM_API(ZOOM_connection)
 347     ZOOM_connection_create(ZOOM_options options)
 348 {
 349     ZOOM_connection c = (ZOOM_connection) xmalloc(sizeof(*c));
 350
 351     initlog();
 352
 353     yaz_log(log_api, "%p ZOOM_connection_create", c);
 354
 355     c->proto = PROTO_Z3950;
 356     c->cs = 0;
 357     ZOOM_connection_set_mask(c, 0);
 358     c->reconnect_ok = 0;
 359     c->state = STATE_IDLE;
 360     c->addinfo = 0;
 361     c->diagset = 0;
 362     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 363     c->buf_in = 0;
 364     c->len_in = 0;
 365     c->buf_out = 0;
 366     c->len_out = 0;
 367     c->resultsets = 0;
 368
 369     c->options = ZOOM_options_create_with_parent(options);
 370
 371     c->host_port = 0;
 372     c->path = 0;
 373     c->proxy = 0;
 374
 375     c->charset = c->lang = 0;
 376
 377     c->cookie_out = 0;
 378     c->cookie_in = 0;
 379     c->client_IP = 0;
 380     c->tasks = 0;
 381
 382     c->user = 0;
 383     c->group = 0;
 384     c->password = 0;
 385
 386     c->maximum_record_size = 0;
 387     c->preferred_message_size = 0;
 388
 389     c->odr_in = odr_createmem(ODR_DECODE);
 390     c->odr_out = odr_createmem(ODR_ENCODE);
 391
 392     c->async = 0;
 393     c->support_named_resultsets = 0;
 394     c->last_event = ZOOM_EVENT_NONE;
 395
 396     c->m_queue_front = 0;
 397     c->m_queue_back = 0;
 398
 399     c->sru_version = xstrdup("1.1");
 400     return c;
 401 }
 402
 403
 404 /* set database names. Take local databases (if set); otherwise
 405    take databases given in ZURL (if set); otherwise use Default */
 406 static char **set_DatabaseNames(ZOOM_connection con, ZOOM_options options,
 407                                 int *num, ODR odr)
 408 {
 409     char **databaseNames;
 410     const char *cp = ZOOM_options_get(options, "databaseName");
 411
 412     if ((!cp || !*cp) && con->host_port)
 413     {
 414         if (strncmp(con->host_port, "unix:", 5) == 0)
 415             cp = strchr(con->host_port+5, ':');
 416         else
 417             cp = strchr(con->host_port, '/');
 418         if (cp)
 419             cp++;
 420     }
 421     if (!cp)
 422         cp = "Default";
 423     nmem_strsplit(odr_getmem(odr), "+", cp,  &databaseNames, num);
 424     return databaseNames;
 425 }
 426
 427 ZOOM_API(ZOOM_connection)
 428     ZOOM_connection_new(const char *host, int portnum)
 429 {
 430     ZOOM_connection c = ZOOM_connection_create(0);
 431
 432     ZOOM_connection_connect(c, host, portnum);
 433     return c;
 434 }
 435
 436 static zoom_sru_mode get_sru_mode_from_string(const char *s)
 437 {
 438     if (!s || !*s)
 439         return zoom_sru_soap;
 440     if (!yaz_matchstr(s, "soap"))
 441         return zoom_sru_soap;
 442     else if (!yaz_matchstr(s, "get"))
 443         return zoom_sru_get;
 444     else if (!yaz_matchstr(s, "post"))
 445         return zoom_sru_post;
 446     return zoom_sru_error;
 447 }
 448
 449 ZOOM_API(void)
 450     ZOOM_connection_connect(ZOOM_connection c,
 451                             const char *host, int portnum)
 452 {
 453     const char *val;
 454     ZOOM_task task;
 455
 456     initlog();
 457
 458     yaz_log(log_api, "%p ZOOM_connection_connect host=%s portnum=%d",
 459             c, host ? host : "null", portnum);
 460
 461     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 462     ZOOM_connection_remove_tasks(c);
 463
 464     if (c->cs)
 465     {
 466         yaz_log(log_details, "%p ZOOM_connection_connect reconnect ok", c);
 467         c->reconnect_ok = 1;
 468         return;
 469     }
 470     yaz_log(log_details, "%p ZOOM_connection_connect connect", c);
 471     xfree(c->proxy);
 472     c->proxy = 0;
 473     val = ZOOM_options_get(c->options, "proxy");
 474     if (val && *val)
 475     {
 476         yaz_log(log_details, "%p ZOOM_connection_connect proxy=%s", c, val);
 477         c->proxy = xstrdup(val);
 478     }
 479
 480     xfree(c->charset);
 481     c->charset = 0;
 482     val = ZOOM_options_get(c->options, "charset");
 483     if (val && *val)
 484     {
 485         yaz_log(log_details, "%p ZOOM_connection_connect charset=%s", c, val);
 486         c->charset = xstrdup(val);
 487     }
 488
 489     xfree(c->lang);
 490     val = ZOOM_options_get(c->options, "lang");
 491     if (val && *val)
 492     {
 493         yaz_log(log_details, "%p ZOOM_connection_connect lang=%s", c, val);
 494         c->lang = xstrdup(val);
 495     }
 496     else
 497         c->lang = 0;
 498
 499     if (host)
 500     {
 501         xfree(c->host_port);
 502         if (portnum)
 503         {
 504             char hostn[128];
 505             sprintf(hostn, "%.80s:%d", host, portnum);
 506             c->host_port = xstrdup(hostn);
 507         }
 508         else
 509             c->host_port = xstrdup(host);
 510     }
 511
 512     {
 513         /*
 514          * If the "<scheme>:" part of the host string is preceded by one
 515          * or more comma-separated <name>=<value> pairs, these are taken
 516          * to be options to be set on the connection object.  Among other
 517          * applications, this facility can be used to embed authentication
 518          * in a host string:
 519          *          user=admin,password=secret,tcp:localhost:9999
 520          */
 521         char *remainder = c->host_port;
 522         char *pcolon = strchr(remainder, ':');
 523         char *pcomma;
 524         char *pequals;
 525         while ((pcomma = strchr(remainder, ',')) != 0 &&
 526                (pcolon == 0 || pcomma < pcolon)) {
 527             *pcomma = '\0';
 528             if ((pequals = strchr(remainder, '=')) != 0) {
 529                 *pequals = '\0';
 530                 /*printf("# setting '%s'='%s'\n", remainder, pequals+1);*/
 531                 ZOOM_connection_option_set(c, remainder, pequals+1);
 532             }
 533             remainder = pcomma+1;
 534         }
 535
 536         if (remainder != c->host_port) {
 537             xfree(c->host_port);
 538             c->host_port = xstrdup(remainder);
 539             /*printf("# reset hp='%s'\n", remainder);*/
 540         }
 541     }
 542
 543     val = ZOOM_options_get(c->options, "sru");
 544     c->sru_mode = get_sru_mode_from_string(val);
 545
 546     xfree(c->sru_version);
 547     val = ZOOM_options_get(c->options, "sru_version");
 548     c->sru_version = xstrdup(val ? val : "1.1");
 549
 550     ZOOM_options_set(c->options, "host", c->host_port);
 551
 552     xfree(c->cookie_out);
 553     c->cookie_out = 0;
 554     val = ZOOM_options_get(c->options, "cookie");
 555     if (val && *val)
 556     {
 557         yaz_log(log_details, "%p ZOOM_connection_connect cookie=%s", c, val);
 558         c->cookie_out = xstrdup(val);
 559     }
 560
 561     xfree(c->client_IP);
 562     c->client_IP = 0;
 563     val = ZOOM_options_get(c->options, "clientIP");
 564     if (val && *val)
 565     {
 566         yaz_log(log_details, "%p ZOOM_connection_connect clientIP=%s",
 567                 c, val);
 568         c->client_IP = xstrdup(val);
 569     }
 570
 571     xfree(c->group);
 572     c->group = 0;
 573     val = ZOOM_options_get(c->options, "group");
 574     if (val && *val)
 575         c->group = xstrdup(val);
 576
 577     xfree(c->user);
 578     c->user = 0;
 579     val = ZOOM_options_get(c->options, "user");
 580     if (val && *val)
 581         c->user = xstrdup(val);
 582
 583     xfree(c->password);
 584     c->password = 0;
 585     val = ZOOM_options_get(c->options, "password");
 586     if (!val)
 587         val = ZOOM_options_get(c->options, "pass");
 588
 589     if (val && *val)
 590         c->password = xstrdup(val);
 591
 592     c->maximum_record_size =
 593         ZOOM_options_get_int(c->options, "maximumRecordSize", 1024*1024);
 594     c->preferred_message_size =
 595         ZOOM_options_get_int(c->options, "preferredMessageSize", 1024*1024);
 596
 597     c->async = ZOOM_options_get_bool(c->options, "async", 0);
 598     yaz_log(log_details, "%p ZOOM_connection_connect async=%d", c, c->async);
 599
 600     task = ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 601
 602     if (!c->async)
 603     {
 604         while (ZOOM_event(1, &c))
 605             ;
 606     }
 607 }
 608
 609 ZOOM_API(ZOOM_query)
 610     ZOOM_query_create(void)
 611 {
 612     ZOOM_query s = (ZOOM_query) xmalloc(sizeof(*s));
 613
 614     yaz_log(log_details, "%p ZOOM_query_create", s);
 615     s->refcount = 1;
 616     s->z_query = 0;
 617     s->sort_spec = 0;
 618     s->odr = odr_createmem(ODR_ENCODE);
 619     s->query_string = 0;
 620
 621     return s;
 622 }
 623
 624 ZOOM_API(void)
 625     ZOOM_query_destroy(ZOOM_query s)
 626 {
 627     if (!s)
 628         return;
 629
 630     (s->refcount)--;
 631     yaz_log(log_details, "%p ZOOM_query_destroy count=%d", s, s->refcount);
 632     if (s->refcount == 0)
 633     {
 634         odr_destroy(s->odr);
 635         xfree(s);
 636     }
 637 }
 638
 639 ZOOM_API(int)
 640     ZOOM_query_prefix(ZOOM_query s, const char *str)
 641 {
 642     s->query_string = odr_strdup(s->odr, str);
 643     s->z_query = (Z_Query *) odr_malloc(s->odr, sizeof(*s->z_query));
 644     s->z_query->which = Z_Query_type_1;
 645     s->z_query->u.type_1 =  p_query_rpn(s->odr, str);
 646     if (!s->z_query->u.type_1)
 647     {
 648         yaz_log(log_details, "%p ZOOM_query_prefix str=%s failed", s, str);
 649         s->z_query = 0;
 650         return -1;
 651     }
 652     yaz_log(log_details, "%p ZOOM_query_prefix str=%s", s, str);
 653     return 0;
 654 }
 655
 656 ZOOM_API(int)
 657     ZOOM_query_cql(ZOOM_query s, const char *str)
 658 {
 659     Z_External *ext;
 660
 661     s->query_string = odr_strdup(s->odr, str);
 662
 663     ext = (Z_External *) odr_malloc(s->odr, sizeof(*ext));
 664     ext->direct_reference = odr_oiddup(s->odr, yaz_oid_userinfo_cql);
 665     ext->indirect_reference = 0;
 666     ext->descriptor = 0;
 667     ext->which = Z_External_CQL;
 668     ext->u.cql = s->query_string;
 669
 670     s->z_query = (Z_Query *) odr_malloc(s->odr, sizeof(*s->z_query));
 671     s->z_query->which = Z_Query_type_104;
 672     s->z_query->u.type_104 =  ext;
 673
 674     yaz_log(log_details, "%p ZOOM_query_cql str=%s", s, str);
 675
 676     return 0;
 677 }
 678
 679 /*
 680  * Translate the CQL string client-side into RPN which is passed to
 681  * the server.  This is useful for server's that don't themselves
 682  * support CQL, for which ZOOM_query_cql() is useless.  `conn' is used
 683  * only as a place to stash diagnostics if compilation fails; if this
 684  * information is not needed, a null pointer may be used.
 685  */
 686 ZOOM_API(int)
 687     ZOOM_query_cql2rpn(ZOOM_query s, const char *str, ZOOM_connection conn)
 688 {
 689     char *rpn;
 690     int ret;
 691     ZOOM_connection freeme = 0;
 692
 693     yaz_log(log_details, "%p ZOOM_query_cql2rpn str=%s conn=%p", s, str, conn);
 694     if (conn == 0)
 695         conn = freeme = ZOOM_connection_create(0);
 696
 697     rpn = cql2pqf(conn, str);
 698     if (freeme != 0)
 699         ZOOM_connection_destroy(freeme);
 700     if (rpn == 0)
 701         return -1;
 702
 703     ret = ZOOM_query_prefix(s, rpn);
 704     xfree(rpn);
 705     return ret;
 706 }
 707
 708 /*
 709  * Analogous in every way to ZOOM_query_cql2rpn(), except that there
 710  * is no analogous ZOOM_query_ccl() that just sends uninterpreted CCL
 711  * to the server, as the YAZ GFS doesn't know how to handle this.
 712  */
 713 ZOOM_API(int)
 714     ZOOM_query_ccl2rpn(ZOOM_query s, const char *str, const char *config,
 715                        int *ccl_error, const char **error_string,
 716                        int *error_pos)
 717 {
 718     int ret;
 719     struct ccl_rpn_node *rpn;
 720     CCL_bibset bibset = ccl_qual_mk();
 721
 722     if (config)
 723         ccl_qual_buf(bibset, config);
 724
 725     rpn = ccl_find_str(bibset, str, ccl_error, error_pos);
 726     if (!rpn)
 727     {
 728         *error_string = ccl_err_msg(*ccl_error);
 729         ret = -1;
 730     }
 731     else
 732     {
 733         WRBUF wr = wrbuf_alloc();
 734         ccl_pquery(wr, rpn);
 735         ccl_rpn_delete(rpn);
 736         ret = ZOOM_query_prefix(s, wrbuf_cstr(wr));
 737         wrbuf_destroy(wr);
 738     }
 739     ccl_qual_rm(&bibset);
 740     return ret;
 741 }
 742
 743 ZOOM_API(int)
 744     ZOOM_query_sortby(ZOOM_query s, const char *criteria)
 745 {
 746     s->sort_spec = yaz_sort_spec(s->odr, criteria);
 747     if (!s->sort_spec)
 748     {
 749         yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s failed",
 750                 s, criteria);
 751         return -1;
 752     }
 753     yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s", s, criteria);
 754     return 0;
 755 }
 756
 757 static zoom_ret do_write(ZOOM_connection c);
 758
 759 ZOOM_API(void)
 760     ZOOM_connection_destroy(ZOOM_connection c)
 761 {
 762     ZOOM_resultset r;
 763     if (!c)
 764         return;
 765     yaz_log(log_api, "%p ZOOM_connection_destroy", c);
 766     if (c->cs)
 767         cs_close(c->cs);
 768     for (r = c->resultsets; r; r = r->next)
 769         r->connection = 0;
 770
 771     xfree(c->buf_in);
 772     xfree(c->addinfo);
 773     xfree(c->diagset);
 774     odr_destroy(c->odr_in);
 775     odr_destroy(c->odr_out);
 776     ZOOM_options_destroy(c->options);
 777     ZOOM_connection_remove_tasks(c);
 778     ZOOM_connection_remove_events(c);
 779     xfree(c->host_port);
 780     xfree(c->path);
 781     xfree(c->proxy);
 782     xfree(c->charset);
 783     xfree(c->lang);
 784     xfree(c->cookie_out);
 785     xfree(c->cookie_in);
 786     xfree(c->client_IP);
 787     xfree(c->user);
 788     xfree(c->group);
 789     xfree(c->password);
 790     xfree(c->sru_version);
 791     xfree(c);
 792 }
 793
 794 void ZOOM_resultset_addref(ZOOM_resultset r)
 795 {
 796     if (r)
 797     {
 798         (r->refcount)++;
 799         yaz_log(log_details, "%p ZOOM_resultset_addref count=%d",
 800                 r, r->refcount);
 801     }
 802 }
 803
 804 ZOOM_resultset ZOOM_resultset_create(void)
 805 {
 806     int i;
 807     ZOOM_resultset r = (ZOOM_resultset) xmalloc(sizeof(*r));
 808
 809     initlog();
 810
 811     yaz_log(log_details, "%p ZOOM_resultset_create", r);
 812     r->refcount = 1;
 813     r->size = 0;
 814     r->odr = odr_createmem(ODR_ENCODE);
 815     r->piggyback = 1;
 816     r->setname = 0;
 817     r->schema = 0;
 818     r->step = 0;
 819     for (i = 0; i<RECORD_HASH_SIZE; i++)
 820         r->record_hash[i] = 0;
 821     r->r_sort_spec = 0;
 822     r->query = 0;
 823     r->connection = 0;
 824     r->next = 0;
 825     r->databaseNames = 0;
 826     r->num_databaseNames = 0;
 827     return r;
 828 }
 829
 830 ZOOM_API(ZOOM_resultset)
 831     ZOOM_connection_search_pqf(ZOOM_connection c, const char *q)
 832 {
 833     ZOOM_resultset r;
 834     ZOOM_query s = ZOOM_query_create();
 835
 836     ZOOM_query_prefix(s, q);
 837
 838     r = ZOOM_connection_search(c, s);
 839     ZOOM_query_destroy(s);
 840     return r;
 841 }
 842
 843 ZOOM_API(ZOOM_resultset)
 844     ZOOM_connection_search(ZOOM_connection c, ZOOM_query q)
 845 {
 846     ZOOM_resultset r = ZOOM_resultset_create();
 847     ZOOM_task task;
 848     const char *cp;
 849     int start, count;
 850     const char *syntax, *elementSetName;
 851
 852     yaz_log(log_api, "%p ZOOM_connection_search set %p query %p", c, r, q);
 853     r->r_sort_spec = q->sort_spec;
 854     r->query = q;
 855
 856     r->options = ZOOM_options_create_with_parent(c->options);
 857
 858     start = ZOOM_options_get_int(r->options, "start", 0);
 859     count = ZOOM_options_get_int(r->options, "count", 0);
 860     {
 861         /* If "presentChunk" is defined use that; otherwise "step" */
 862         const char *cp = ZOOM_options_get(r->options, "presentChunk");
 863         r->step = ZOOM_options_get_int(r->options,
 864                                        (cp != 0 ? "presentChunk": "step"), 0);
 865     }
 866     r->piggyback = ZOOM_options_get_bool(r->options, "piggyback", 1);
 867     cp = ZOOM_options_get(r->options, "setname");
 868     if (cp)
 869         r->setname = xstrdup(cp);
 870     cp = ZOOM_options_get(r->options, "schema");
 871     if (cp)
 872         r->schema = xstrdup(cp);
 873
 874     r->databaseNames = set_DatabaseNames(c, c->options, &r->num_databaseNames,
 875                                          r->odr);
 876
 877     r->connection = c;
 878
 879     r->next = c->resultsets;
 880     c->resultsets = r;
 881
 882
 883
 884     if (c->host_port && c->proto == PROTO_HTTP)
 885     {
 886         if (!c->cs)
 887         {
 888             yaz_log(log_details, "ZOOM_connection_search: no comstack");
 889             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 890         }
 891         else
 892         {
 893             yaz_log(log_details, "ZOOM_connection_search: reconnect");
 894             c->reconnect_ok = 1;
 895         }
 896     }
 897
 898     task = ZOOM_connection_add_task(c, ZOOM_TASK_SEARCH);
 899     task->u.search.resultset = r;
 900     task->u.search.start = start;
 901     task->u.search.count = count;
 902
 903     syntax = ZOOM_options_get(r->options, "preferredRecordSyntax");
 904     task->u.search.syntax = syntax ? xstrdup(syntax) : 0;
 905     elementSetName = ZOOM_options_get(r->options, "elementSetName");
 906     task->u.search.elementSetName = elementSetName
 907         ? xstrdup(elementSetName) : 0;
 908
 909     ZOOM_resultset_addref(r);
 910
 911     (q->refcount)++;
 912
 913     if (!c->async)
 914     {
 915         while (ZOOM_event(1, &c))
 916             ;
 917     }
 918     return r;
 919 }
 920
 921 ZOOM_API(void)
 922     ZOOM_resultset_sort(ZOOM_resultset r,
 923                          const char *sort_type, const char *sort_spec)
 924 {
 925     (void) ZOOM_resultset_sort1(r, sort_type, sort_spec);
 926 }
 927
 928 ZOOM_API(int)
 929     ZOOM_resultset_sort1(ZOOM_resultset r,
 930                          const char *sort_type, const char *sort_spec)
 931 {
 932     ZOOM_connection c = r->connection;
 933     ZOOM_task task;
 934     ZOOM_query newq;
 935
 936     newq = ZOOM_query_create();
 937     if (ZOOM_query_sortby(newq, sort_spec) < 0)
 938         return -1;
 939
 940     yaz_log(log_api, "%p ZOOM_resultset_sort r=%p sort_type=%s sort_spec=%s",
 941             r, r, sort_type, sort_spec);
 942     if (!c)
 943         return 0;
 944
 945     if (c->host_port && c->proto == PROTO_HTTP)
 946     {
 947         if (!c->cs)
 948         {
 949             yaz_log(log_details, "%p ZOOM_resultset_sort: no comstack", r);
 950             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 951         }
 952         else
 953         {
 954             yaz_log(log_details, "%p ZOOM_resultset_sort: prepare reconnect",
 955                     r);
 956             c->reconnect_ok = 1;
 957         }
 958     }
 959
 960     ZOOM_resultset_cache_reset(r);
 961     task = ZOOM_connection_add_task(c, ZOOM_TASK_SORT);
 962     task->u.sort.resultset = r;
 963     task->u.sort.q = newq;
 964
 965     ZOOM_resultset_addref(r);
 966
 967     if (!c->async)
 968     {
 969         while (ZOOM_event(1, &c))
 970             ;
 971     }
 972
 973     return 0;
 974 }
 975
 976 ZOOM_API(void)
 977     ZOOM_resultset_cache_reset(ZOOM_resultset r)
 978 {
 979     int i;
 980     for (i = 0; i<RECORD_HASH_SIZE; i++)
 981     {
 982         ZOOM_record_cache rc;
 983         for (rc = r->record_hash[i]; rc; rc = rc->next)
 984         {
 985             if (rc->rec.wrbuf_marc)
 986                 wrbuf_destroy(rc->rec.wrbuf_marc);
 987             if (rc->rec.wrbuf_iconv)
 988                 wrbuf_destroy(rc->rec.wrbuf_iconv);
 989             if (rc->rec.wrbuf_opac)
 990                 wrbuf_destroy(rc->rec.wrbuf_opac);
 991         }
 992         r->record_hash[i] = 0;
 993     }
 994 }
 995
 996 ZOOM_API(void)
 997     ZOOM_resultset_destroy(ZOOM_resultset r)
 998 {
 999     resultset_destroy(r);
1000 }
1001
1002 static void resultset_destroy(ZOOM_resultset r)
1003 {
1004     if (!r)
1005         return;
1006     (r->refcount)--;
1007     yaz_log(log_details, "%p ZOOM_resultset_destroy r=%p count=%d",
1008             r, r, r->refcount);
1009     if (r->refcount == 0)
1010     {
1011         ZOOM_resultset_cache_reset(r);
1012
1013         if (r->connection)
1014         {
1015             /* remove ourselves from the resultsets in connection */
1016             ZOOM_resultset *rp = &r->connection->resultsets;
1017             while (1)
1018             {
1019                 assert(*rp);   /* we must be in this list!! */
1020                 if (*rp == r)
1021                 {   /* OK, we're here - take us out of it */
1022                     *rp = (*rp)->next;
1023                     break;
1024                 }
1025                 rp = &(*rp)->next;
1026             }
1027         }
1028         ZOOM_query_destroy(r->query);
1029         ZOOM_options_destroy(r->options);
1030         odr_destroy(r->odr);
1031         xfree(r->setname);
1032         xfree(r->schema);
1033         xfree(r);
1034     }
1035 }
1036
1037 ZOOM_API(size_t)
1038     ZOOM_resultset_size(ZOOM_resultset r)
1039 {
1040     yaz_log(log_details, "ZOOM_resultset_size r=%p count=%d",
1041             r, r->size);
1042     return r->size;
1043 }
1044
1045 static void do_close(ZOOM_connection c)
1046 {
1047     if (c->cs)
1048         cs_close(c->cs);
1049     c->cs = 0;
1050     ZOOM_connection_set_mask(c, 0);
1051     c->state = STATE_IDLE;
1052 }
1053
1054 static int ZOOM_test_reconnect(ZOOM_connection c)
1055 {
1056     ZOOM_Event event;
1057
1058     if (!c->reconnect_ok)
1059         return 0;
1060     do_close(c);
1061     c->reconnect_ok = 0;
1062     c->tasks->running = 0;
1063     ZOOM_connection_insert_task(c, ZOOM_TASK_CONNECT);
1064
1065     event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
1066     ZOOM_connection_put_event(c, event);
1067
1068     return 1;
1069 }
1070
1071 static void ZOOM_resultset_retrieve(ZOOM_resultset r,
1072                                     int force_sync, int start, int count)
1073 {
1074     ZOOM_task task;
1075     ZOOM_connection c;
1076     const char *cp;
1077     const char *syntax, *elementSetName;
1078
1079     if (!r)
1080         return;
1081     yaz_log(log_details, "%p ZOOM_resultset_retrieve force_sync=%d start=%d"
1082             " count=%d", r, force_sync, start, count);
1083     c = r->connection;
1084     if (!c)
1085         return;
1086
1087     if (c->host_port && c->proto == PROTO_HTTP)
1088     {
1089         if (!c->cs)
1090         {
1091             yaz_log(log_details, "%p ZOOM_resultset_retrieve: no comstack", r);
1092             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
1093         }
1094         else
1095         {
1096             yaz_log(log_details, "%p ZOOM_resultset_retrieve: prepare "
1097                     "reconnect", r);
1098             c->reconnect_ok = 1;
1099         }
1100     }
1101     task = ZOOM_connection_add_task(c, ZOOM_TASK_RETRIEVE);
1102     task->u.retrieve.resultset = r;
1103     task->u.retrieve.start = start;
1104     task->u.retrieve.count = count;
1105
1106     syntax = ZOOM_options_get(r->options, "preferredRecordSyntax");
1107     task->u.retrieve.syntax = syntax ? xstrdup(syntax) : 0;
1108     elementSetName = ZOOM_options_get(r->options, "elementSetName");
1109     task->u.retrieve.elementSetName = elementSetName
1110         ? xstrdup(elementSetName) : 0;
1111
1112     cp = ZOOM_options_get(r->options, "schema");
1113     if (cp)
1114     {
1115         if (!r->schema || strcmp(r->schema, cp))
1116         {
1117             xfree(r->schema);
1118             r->schema = xstrdup(cp);
1119         }
1120     }
1121
1122     ZOOM_resultset_addref(r);
1123
1124     if (!r->connection->async || force_sync)
1125         while (r->connection && ZOOM_event(1, &r->connection))
1126             ;
1127 }
1128
1129 ZOOM_API(void)
1130     ZOOM_resultset_records(ZOOM_resultset r, ZOOM_record *recs,
1131                            size_t start, size_t count)
1132 {
1133     int force_present = 0;
1134
1135     if (!r)
1136         return ;
1137     yaz_log(log_api, "%p ZOOM_resultset_records r=%p start=%ld count=%ld",
1138             r, r, (long) start, (long) count);
1139     if (count && recs)
1140         force_present = 1;
1141     ZOOM_resultset_retrieve(r, force_present, start, count);
1142     if (force_present)
1143     {
1144         size_t i;
1145         for (i = 0; i< count; i++)
1146             recs[i] = ZOOM_resultset_record_immediate(r, i+start);
1147     }
1148 }
1149
1150 static void get_cert(ZOOM_connection c)
1151 {
1152     char *cert_buf;
1153     int cert_len;
1154
1155     if (cs_get_peer_certificate_x509(c->cs, &cert_buf, &cert_len))
1156     {
1157         ZOOM_connection_option_setl(c, "sslPeerCert",
1158                                     cert_buf, cert_len);
1159         xfree(cert_buf);
1160     }
1161 }
1162
1163 static zoom_ret do_connect(ZOOM_connection c)
1164 {
1165     void *add;
1166     const char *effective_host;
1167
1168     if (c->proxy)
1169         effective_host = c->proxy;
1170     else
1171         effective_host = c->host_port;
1172
1173     yaz_log(log_details, "%p do_connect effective_host=%s", c, effective_host);
1174
1175     if (c->cs)
1176         cs_close(c->cs);
1177     c->cs = cs_create_host(effective_host, 0, &add);
1178
1179     if (c->cs && c->cs->protocol == PROTO_HTTP)
1180     {
1181 #if YAZ_HAVE_XML2
1182         const char *path = 0;
1183
1184         c->proto = PROTO_HTTP;
1185         cs_get_host_args(c->host_port, &path);
1186         xfree(c->path);
1187         c->path = (char*) xmalloc(strlen(path)+2);
1188         c->path[0] = '/';
1189         strcpy(c->path+1, path);
1190 #else
1191         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_PROTOCOL, "SRW");
1192         do_close(c);
1193         return zoom_complete;
1194 #endif
1195     }
1196     if (c->cs)
1197     {
1198         int ret = cs_connect(c->cs, add);
1199         if (ret == 0)
1200         {
1201             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
1202             ZOOM_connection_put_event(c, event);
1203             get_cert(c);
1204             if (c->proto == PROTO_Z3950)
1205                 ZOOM_connection_send_init(c);
1206             else
1207             {
1208                 /* no init request for SRW .. */
1209                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
1210                 ZOOM_connection_remove_task(c);
1211                 ZOOM_connection_set_mask(c, 0);
1212                 ZOOM_connection_exec_task(c);
1213             }
1214             c->state = STATE_ESTABLISHED;
1215             return zoom_pending;
1216         }
1217         else if (ret > 0)
1218         {
1219             int mask = ZOOM_SELECT_EXCEPT;
1220             if (c->cs->io_pending & CS_WANT_WRITE)
1221                 mask += ZOOM_SELECT_WRITE;
1222             if (c->cs->io_pending & CS_WANT_READ)
1223                 mask += ZOOM_SELECT_READ;
1224             ZOOM_connection_set_mask(c, mask);
1225             c->state = STATE_CONNECTING;
1226             return zoom_pending;
1227         }
1228     }
1229     c->state = STATE_IDLE;
1230     set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
1231     return zoom_complete;
1232 }
1233
1234 static void otherInfo_attach(ZOOM_connection c, Z_APDU *a, ODR out)
1235 {
1236     int i;
1237     for (i = 0; i<200; i++)
1238     {
1239         size_t len;
1240         Odr_oid *oid;
1241         Z_OtherInformation **oi;
1242         char buf[80];
1243         const char *val;
1244         const char *cp;
1245
1246         sprintf(buf, "otherInfo%d", i);
1247         val = ZOOM_options_get(c->options, buf);
1248         if (!val)
1249             break;
1250         cp = strchr(val, ':');
1251         if (!cp)
1252             continue;
1253         len = cp - val;
1254         if (len >= sizeof(buf))
1255             len = sizeof(buf)-1;
1256         memcpy(buf, val, len);
1257         buf[len] = '\0';
1258
1259         oid = yaz_string_to_oid_odr(yaz_oid_std(), CLASS_USERINFO,
1260                                     buf, out);
1261         if (!oid)
1262             continue;
1263
1264         yaz_oi_APDU(a, &oi);
1265         yaz_oi_set_string_oid(oi, out, oid, 1, cp+1);
1266     }
1267 }
1268
1269 static int encode_APDU(ZOOM_connection c, Z_APDU *a, ODR out)
1270 {
1271     assert(a);
1272     if (c->cookie_out)
1273     {
1274         Z_OtherInformation **oi;
1275         yaz_oi_APDU(a, &oi);
1276         yaz_oi_set_string_oid(oi, out, yaz_oid_userinfo_cookie,
1277                               1, c->cookie_out);
1278     }
1279     if (c->client_IP)
1280     {
1281         Z_OtherInformation **oi;
1282         yaz_oi_APDU(a, &oi);
1283         yaz_oi_set_string_oid(oi, out, yaz_oid_userinfo_client_ip,
1284                               1, c->client_IP);
1285     }
1286     otherInfo_attach(c, a, out);
1287     if (!z_APDU(out, &a, 0, 0))
1288     {
1289         FILE *outf = fopen("/tmp/apdu.txt", "a");
1290         if (a && outf)
1291         {
1292             ODR odr_pr = odr_createmem(ODR_PRINT);
1293             fprintf(outf, "a=%p\n", a);
1294             odr_setprint(odr_pr, outf);
1295             z_APDU(odr_pr, &a, 0, 0);
1296             odr_destroy(odr_pr);
1297         }
1298         yaz_log(log_api, "%p encoding_APDU: encoding failed", c);
1299         set_ZOOM_error(c, ZOOM_ERROR_ENCODE, 0);
1300         odr_reset(out);
1301         return -1;
1302     }
1303     yaz_log(log_details, "%p encoding_APDU encoding OK", c);
1304     return 0;
1305 }
1306
1307 static zoom_ret send_APDU(ZOOM_connection c, Z_APDU *a)
1308 {
1309     ZOOM_Event event;
1310     assert(a);
1311     if (encode_APDU(c, a, c->odr_out))
1312         return zoom_complete;
1313     yaz_log(log_details, "%p send APDU type=%d", c, a->which);
1314     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1315     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
1316     ZOOM_connection_put_event(c, event);
1317     odr_reset(c->odr_out);
1318     return do_write(c);
1319 }
1320
1321 /* returns 1 if PDU was sent OK (still pending )
1322    0 if PDU was not sent OK (nothing to wait for)
1323 */
1324
1325 static zoom_ret ZOOM_connection_send_init(ZOOM_connection c)
1326 {
1327     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_initRequest);
1328     Z_InitRequest *ireq = apdu->u.initRequest;
1329     Z_IdAuthentication *auth = (Z_IdAuthentication *)
1330         odr_malloc(c->odr_out, sizeof(*auth));
1331     char *version;
1332
1333     ODR_MASK_SET(ireq->options, Z_Options_search);
1334     ODR_MASK_SET(ireq->options, Z_Options_present);
1335     ODR_MASK_SET(ireq->options, Z_Options_scan);
1336     ODR_MASK_SET(ireq->options, Z_Options_sort);
1337     ODR_MASK_SET(ireq->options, Z_Options_extendedServices);
1338     ODR_MASK_SET(ireq->options, Z_Options_namedResultSets);
1339
1340     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_1);
1341     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_2);
1342     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_3);
1343
1344     /* Index Data's Z39.50 Implementor Id is 81 */
1345     ireq->implementationId =
1346         odr_prepend(c->odr_out,
1347                     ZOOM_options_get(c->options, "implementationId"),
1348                     odr_prepend(c->odr_out, "81", ireq->implementationId));
1349
1350     ireq->implementationName =
1351         odr_prepend(c->odr_out,
1352                     ZOOM_options_get(c->options, "implementationName"),
1353                     odr_prepend(c->odr_out, "ZOOM-C",
1354                                 ireq->implementationName));
1355
1356     version = odr_strdup(c->odr_out, "$Revision: 1.144 $");
1357     if (strlen(version) > 10)   /* check for unexpanded CVS strings */
1358         version[strlen(version)-2] = '\0';
1359     ireq->implementationVersion =
1360         odr_prepend(c->odr_out,
1361                     ZOOM_options_get(c->options, "implementationVersion"),
1362                     odr_prepend(c->odr_out, &version[11],
1363                                 ireq->implementationVersion));
1364
1365     *ireq->maximumRecordSize = c->maximum_record_size;
1366     *ireq->preferredMessageSize = c->preferred_message_size;
1367
1368     if (c->group || c->password)
1369     {
1370         Z_IdPass *pass = (Z_IdPass *) odr_malloc(c->odr_out, sizeof(*pass));
1371         pass->groupId = 0;
1372         if (c->group)
1373             pass->groupId = odr_strdup(c->odr_out, c->group);
1374         pass->userId = 0;
1375         if (c->user)
1376             pass->userId = odr_strdup(c->odr_out, c->user);
1377         pass->password = 0;
1378         if (c->password)
1379             pass->password = odr_strdup(c->odr_out, c->password);
1380         auth->which = Z_IdAuthentication_idPass;
1381         auth->u.idPass = pass;
1382         ireq->idAuthentication = auth;
1383     }
1384     else if (c->user)
1385     {
1386         auth->which = Z_IdAuthentication_open;
1387         auth->u.open = odr_strdup(c->odr_out, c->user);
1388         ireq->idAuthentication = auth;
1389     }
1390     if (c->proxy)
1391     {
1392         yaz_oi_set_string_oid(&ireq->otherInfo, c->odr_out,
1393                               yaz_oid_userinfo_proxy, 1, c->host_port);
1394     }
1395     if (c->charset || c->lang)
1396     {
1397         Z_OtherInformation **oi;
1398         Z_OtherInformationUnit *oi_unit;
1399
1400         yaz_oi_APDU(apdu, &oi);
1401
1402         if ((oi_unit = yaz_oi_update(oi, c->odr_out, NULL, 0, 0)))
1403         {
1404             ODR_MASK_SET(ireq->options, Z_Options_negotiationModel);
1405             oi_unit->which = Z_OtherInfo_externallyDefinedInfo;
1406             oi_unit->information.externallyDefinedInfo =
1407                 yaz_set_proposal_charneg_list(c->odr_out, " ",
1408                                               c->charset, c->lang, 1);
1409         }
1410     }
1411     assert(apdu);
1412     return send_APDU(c, apdu);
1413 }
1414
1415 #if YAZ_HAVE_XML2
1416 static zoom_ret send_srw(ZOOM_connection c, Z_SRW_PDU *sr)
1417 {
1418     Z_GDU *gdu;
1419     ZOOM_Event event;
1420
1421     gdu = z_get_HTTP_Request_host_path(c->odr_out, c->host_port, c->path);
1422
1423     if (c->sru_mode == zoom_sru_get)
1424     {
1425         yaz_sru_get_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1426     }
1427     else if (c->sru_mode == zoom_sru_post)
1428     {
1429         yaz_sru_post_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1430     }
1431     else if (c->sru_mode == zoom_sru_soap)
1432     {
1433         yaz_sru_soap_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1434     }
1435     if (!z_GDU(c->odr_out, &gdu, 0, 0))
1436         return zoom_complete;
1437     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1438
1439     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
1440     ZOOM_connection_put_event(c, event);
1441     odr_reset(c->odr_out);
1442     return do_write(c);
1443 }
1444 #endif
1445
1446 #if YAZ_HAVE_XML2
1447 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1448 {
1449     int i;
1450     int *start, *count;
1451     ZOOM_resultset resultset = 0;
1452     Z_SRW_PDU *sr = 0;
1453     const char *option_val = 0;
1454
1455     if (c->error)                  /* don't continue on error */
1456         return zoom_complete;
1457     assert(c->tasks);
1458     switch(c->tasks->which)
1459     {
1460     case ZOOM_TASK_SEARCH:
1461         resultset = c->tasks->u.search.resultset;
1462         resultset->setname = xstrdup("default");
1463         ZOOM_options_set(resultset->options, "setname", resultset->setname);
1464         start = &c->tasks->u.search.start;
1465         count = &c->tasks->u.search.count;
1466         break;
1467     case ZOOM_TASK_RETRIEVE:
1468         resultset = c->tasks->u.retrieve.resultset;
1469
1470         start = &c->tasks->u.retrieve.start;
1471         count = &c->tasks->u.retrieve.count;
1472
1473         if (*start >= resultset->size)
1474             return zoom_complete;
1475         if (*start + *count > resultset->size)
1476             *count = resultset->size - *start;
1477
1478         for (i = 0; i < *count; i++)
1479         {
1480             ZOOM_record rec =
1481                 record_cache_lookup(resultset, i + *start,
1482                                     c->tasks->u.retrieve.syntax,
1483                                     c->tasks->u.retrieve.elementSetName);
1484             if (!rec)
1485                 break;
1486             else
1487             {
1488                 ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
1489                 ZOOM_connection_put_event(c, event);
1490             }
1491         }
1492         *start += i;
1493         *count -= i;
1494
1495         if (*count == 0)
1496             return zoom_complete;
1497         break;
1498     default:
1499         return zoom_complete;
1500     }
1501     assert(resultset->query);
1502
1503     sr = yaz_srw_get_pdu(c->odr_out, Z_SRW_searchRetrieve_request,
1504                          c->sru_version);
1505
1506     if (resultset->query->z_query->which == Z_Query_type_104
1507         && resultset->query->z_query->u.type_104->which == Z_External_CQL)
1508     {
1509         sr->u.request->query_type = Z_SRW_query_type_cql;
1510         sr->u.request->query.cql =resultset->query->z_query->u.type_104->u.cql;
1511     }
1512     else if (resultset->query->z_query->which == Z_Query_type_1 &&
1513              resultset->query->z_query->u.type_1)
1514     {
1515         sr->u.request->query_type = Z_SRW_query_type_pqf;
1516         sr->u.request->query.pqf = resultset->query->query_string;
1517     }
1518     else
1519     {
1520         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
1521         return zoom_complete;
1522     }
1523     sr->u.request->startRecord = odr_intdup(c->odr_out, *start + 1);
1524     sr->u.request->maximumRecords = odr_intdup(
1525         c->odr_out, resultset->step>0 ? resultset->step : *count);
1526     sr->u.request->recordSchema = resultset->schema;
1527
1528     option_val = ZOOM_resultset_option_get(resultset, "recordPacking");
1529     if (option_val)
1530         sr->u.request->recordPacking = odr_strdup(c->odr_out, option_val);
1531
1532     option_val = ZOOM_resultset_option_get(resultset, "extraArgs");
1533     if (option_val)
1534         sr->extra_args = odr_strdup(c->odr_out, option_val);
1535     return send_srw(c, sr);
1536 }
1537 #else
1538 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1539 {
1540     return zoom_complete;
1541 }
1542 #endif
1543
1544 static zoom_ret ZOOM_connection_send_search(ZOOM_connection c)
1545 {
1546     ZOOM_resultset r;
1547     int lslb, ssub, mspn;
1548     const char *syntax;
1549     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_searchRequest);
1550     Z_SearchRequest *search_req = apdu->u.searchRequest;
1551     const char *elementSetName;
1552     const char *smallSetElementSetName;
1553     const char *mediumSetElementSetName;
1554
1555     assert(c->tasks);
1556     assert(c->tasks->which == ZOOM_TASK_SEARCH);
1557
1558     r = c->tasks->u.search.resultset;
1559
1560     yaz_log(log_details, "%p ZOOM_connection_send_search set=%p", c, r);
1561
1562     elementSetName =
1563         ZOOM_options_get(r->options, "elementSetName");
1564     smallSetElementSetName  =
1565         ZOOM_options_get(r->options, "smallSetElementSetName");
1566     mediumSetElementSetName =
1567         ZOOM_options_get(r->options, "mediumSetElementSetName");
1568
1569     if (!smallSetElementSetName)
1570         smallSetElementSetName = elementSetName;
1571
1572     if (!mediumSetElementSetName)
1573         mediumSetElementSetName = elementSetName;
1574
1575     assert(r);
1576     assert(r->query);
1577
1578     /* prepare query for the search request */
1579     search_req->query = r->query->z_query;
1580     if (!search_req->query)
1581     {
1582         set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
1583         return zoom_complete;
1584     }
1585     if (r->query->z_query->which == Z_Query_type_1 ||
1586         r->query->z_query->which == Z_Query_type_101)
1587     {
1588         const char *cp = ZOOM_options_get(r->options, "rpnCharset");
1589         if (cp)
1590         {
1591             yaz_iconv_t cd = yaz_iconv_open(cp, "UTF-8");
1592             if (cd)
1593             {
1594                 search_req->query = yaz_copy_Z_Query(search_req->query,
1595                                                      c->odr_out);
1596
1597                 yaz_query_charset_convert_rpnquery(search_req->query->u.type_1,
1598                                                    c->odr_out, cd);
1599                 yaz_iconv_close(cd);
1600             }
1601         }
1602     }
1603     search_req->databaseNames = r->databaseNames;
1604     search_req->num_databaseNames = r->num_databaseNames;
1605
1606     /* get syntax (no need to provide unless piggyback is in effect) */
1607     syntax = c->tasks->u.search.syntax;
1608
1609     lslb = ZOOM_options_get_int(r->options, "largeSetLowerBound", -1);
1610     ssub = ZOOM_options_get_int(r->options, "smallSetUpperBound", -1);
1611     mspn = ZOOM_options_get_int(r->options, "mediumSetPresentNumber", -1);
1612     if (lslb != -1 && ssub != -1 && mspn != -1)
1613     {
1614         /* So're a Z39.50 expert? Let's hope you don't do sort */
1615         *search_req->largeSetLowerBound = lslb;
1616         *search_req->smallSetUpperBound = ssub;
1617         *search_req->mediumSetPresentNumber = mspn;
1618     }
1619     else if (c->tasks->u.search.start == 0 && c->tasks->u.search.count > 0
1620              && r->piggyback && !r->r_sort_spec && !r->schema)
1621     {
1622         /* Regular piggyback - do it unless we're going to do sort */
1623         *search_req->largeSetLowerBound = 2000000000;
1624         *search_req->smallSetUpperBound = 1;
1625         *search_req->mediumSetPresentNumber =
1626             r->step>0 ? r->step : c->tasks->u.search.count;
1627     }
1628     else
1629     {
1630         /* non-piggyback. Need not provide elementsets or syntaxes .. */
1631         smallSetElementSetName = 0;
1632         mediumSetElementSetName = 0;
1633         syntax = 0;
1634     }
1635     if (smallSetElementSetName && *smallSetElementSetName)
1636     {
1637         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1638             odr_malloc(c->odr_out, sizeof(*esn));
1639
1640         esn->which = Z_ElementSetNames_generic;
1641         esn->u.generic = odr_strdup(c->odr_out, smallSetElementSetName);
1642         search_req->smallSetElementSetNames = esn;
1643     }
1644     if (mediumSetElementSetName && *mediumSetElementSetName)
1645     {
1646         Z_ElementSetNames *esn =(Z_ElementSetNames *)
1647             odr_malloc(c->odr_out, sizeof(*esn));
1648
1649         esn->which = Z_ElementSetNames_generic;
1650         esn->u.generic = odr_strdup(c->odr_out, mediumSetElementSetName);
1651         search_req->mediumSetElementSetNames = esn;
1652     }
1653     if (syntax)
1654         search_req->preferredRecordSyntax =
1655             zoom_yaz_str_to_z3950oid(c, CLASS_RECSYN, syntax);
1656
1657     if (!r->setname)
1658     {
1659         if (c->support_named_resultsets)
1660         {
1661             char setname[14];
1662             int ord;
1663             /* find the lowest unused ordinal so that we re-use
1664                result sets on the server. */
1665             for (ord = 1; ; ord++)
1666             {
1667                 ZOOM_resultset rp;
1668                 sprintf(setname, "%d", ord);
1669                 for (rp = c->resultsets; rp; rp = rp->next)
1670                     if (rp->setname && !strcmp(rp->setname, setname))
1671                         break;
1672                 if (!rp)
1673                     break;
1674             }
1675             r->setname = xstrdup(setname);
1676             yaz_log(log_details, "%p ZOOM_connection_send_search: allocating "
1677                     "set %s", c, r->setname);
1678         }
1679         else
1680         {
1681             yaz_log(log_details, "%p ZOOM_connection_send_search: using "
1682                     "default set", c);
1683             r->setname = xstrdup("default");
1684         }
1685         ZOOM_options_set(r->options, "setname", r->setname);
1686     }
1687     search_req->resultSetName = odr_strdup(c->odr_out, r->setname);
1688     return send_APDU(c, apdu);
1689 }
1690
1691 static void response_default_diag(ZOOM_connection c, Z_DefaultDiagFormat *r)
1692 {
1693     char oid_name_buf[OID_STR_MAX];
1694     const char *oid_name;
1695     char *addinfo = 0;
1696
1697     oid_name = yaz_oid_to_string_buf(r->diagnosticSetId, 0, oid_name_buf);
1698     switch (r->which)
1699     {
1700     case Z_DefaultDiagFormat_v2Addinfo:
1701         addinfo = r->u.v2Addinfo;
1702         break;
1703     case Z_DefaultDiagFormat_v3Addinfo:
1704         addinfo = r->u.v3Addinfo;
1705         break;
1706     }
1707     xfree(c->addinfo);
1708     c->addinfo = 0;
1709     set_dset_error(c, *r->condition, oid_name, addinfo, 0);
1710 }
1711
1712 static void response_diag(ZOOM_connection c, Z_DiagRec *p)
1713 {
1714     if (p->which != Z_DiagRec_defaultFormat)
1715         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1716     else
1717         response_default_diag(c, p->u.defaultFormat);
1718 }
1719
1720 ZOOM_API(ZOOM_record)
1721     ZOOM_record_clone(ZOOM_record srec)
1722 {
1723     char *buf;
1724     int size;
1725     ODR odr_enc;
1726     ZOOM_record nrec;
1727
1728     odr_enc = odr_createmem(ODR_ENCODE);
1729     if (!z_NamePlusRecord(odr_enc, &srec->npr, 0, 0))
1730         return 0;
1731     buf = odr_getbuf(odr_enc, &size, 0);
1732
1733     nrec = (ZOOM_record) xmalloc(sizeof(*nrec));
1734     nrec->odr = odr_createmem(ODR_DECODE);
1735     nrec->wrbuf_marc = 0;
1736     nrec->wrbuf_iconv = 0;
1737     nrec->wrbuf_opac = 0;
1738     odr_setbuf(nrec->odr, buf, size, 0);
1739     z_NamePlusRecord(nrec->odr, &nrec->npr, 0, 0);
1740
1741     odr_destroy(odr_enc);
1742     return nrec;
1743 }
1744
1745 ZOOM_API(ZOOM_record)
1746     ZOOM_resultset_record_immediate(ZOOM_resultset s,size_t pos)
1747 {
1748     const char *syntax =
1749         ZOOM_options_get(s->options, "preferredRecordSyntax");
1750     const char *elementSetName =
1751         ZOOM_options_get(s->options, "elementSetName");
1752
1753     return record_cache_lookup(s, pos, syntax, elementSetName);
1754 }
1755
1756 ZOOM_API(ZOOM_record)
1757     ZOOM_resultset_record(ZOOM_resultset r, size_t pos)
1758 {
1759     ZOOM_record rec = ZOOM_resultset_record_immediate(r, pos);
1760
1761     if (!rec)
1762     {
1763         /*
1764          * MIKE: I think force_sync should always be zero, but I don't
1765          * want to make this change until I get the go-ahead from
1766          * Adam, in case something depends on the old synchronous
1767          * behaviour.
1768          */
1769         int force_sync = 1;
1770         if (getenv("ZOOM_RECORD_NO_FORCE_SYNC")) force_sync = 0;
1771         ZOOM_resultset_retrieve(r, force_sync, pos, 1);
1772         rec = ZOOM_resultset_record_immediate(r, pos);
1773     }
1774     return rec;
1775 }
1776
1777 ZOOM_API(void)
1778     ZOOM_record_destroy(ZOOM_record rec)
1779 {
1780     if (!rec)
1781         return;
1782     if (rec->wrbuf_marc)
1783         wrbuf_destroy(rec->wrbuf_marc);
1784     if (rec->wrbuf_iconv)
1785         wrbuf_destroy(rec->wrbuf_iconv);
1786     if (rec->wrbuf_opac)
1787         wrbuf_destroy(rec->wrbuf_opac);
1788     odr_destroy(rec->odr);
1789     xfree(rec);
1790 }
1791
1792 static const char *marc_iconv_return(ZOOM_record rec, int marc_type,
1793                                      int *len,
1794                                      const char *buf, int sz,
1795                                      const char *record_charset)
1796 {
1797     char to[40];
1798     char from[40];
1799     yaz_iconv_t cd = 0;
1800     yaz_marc_t mt = yaz_marc_create();
1801
1802     *from = '\0';
1803     strcpy(to, "UTF-8");
1804     if (record_charset && *record_charset)
1805     {
1806         /* Use "from,to" or just "from" */
1807         const char *cp = strchr(record_charset, ',');
1808         int clen = strlen(record_charset);
1809         if (cp && cp[1])
1810         {
1811             strncpy( to, cp+1, sizeof(to)-1);
1812             to[sizeof(to)-1] = '\0';
1813             clen = cp - record_charset;
1814         }
1815         if (clen > sizeof(from)-1)
1816             clen = sizeof(from)-1;
1817
1818         if (clen)
1819             strncpy(from, record_charset, clen);
1820         from[clen] = '\0';
1821     }
1822
1823     if (*from && *to)
1824     {
1825         cd = yaz_iconv_open(to, from);
1826         yaz_marc_iconv(mt, cd);
1827     }
1828
1829     yaz_marc_xml(mt, marc_type);
1830     if (!rec->wrbuf_marc)
1831         rec->wrbuf_marc = wrbuf_alloc();
1832     wrbuf_rewind(rec->wrbuf_marc);
1833     if (yaz_marc_decode_wrbuf(mt, buf, sz, rec->wrbuf_marc) > 0)
1834     {
1835         yaz_marc_destroy(mt);
1836         if (cd)
1837             yaz_iconv_close(cd);
1838         if (len)
1839             *len = wrbuf_len(rec->wrbuf_marc);
1840         return wrbuf_cstr(rec->wrbuf_marc);
1841     }
1842     yaz_marc_destroy(mt);
1843     if (cd)
1844         yaz_iconv_close(cd);
1845     return 0;
1846 }
1847
1848 static const char *record_iconv_return(ZOOM_record rec, int *len,
1849                                        const char *buf, int sz,
1850                                        const char *record_charset)
1851 {
1852     char to[40];
1853     char from[40];
1854     yaz_iconv_t cd = 0;
1855
1856     *from = '\0';
1857     strcpy(to, "UTF-8");
1858
1859     if (record_charset && *record_charset)
1860     {
1861         /* Use "from,to" or just "from" */
1862         const char *cp = strchr(record_charset, ',');
1863         int clen = strlen(record_charset);
1864         if (cp && cp[1])
1865         {
1866             strncpy( to, cp+1, sizeof(to)-1);
1867             to[sizeof(to)-1] = '\0';
1868             clen = cp - record_charset;
1869         }
1870         if (clen > sizeof(from)-1)
1871             clen = sizeof(from)-1;
1872
1873         if (clen)
1874             strncpy(from, record_charset, clen);
1875         from[clen] = '\0';
1876     }
1877
1878     if (*from && *to && (cd = yaz_iconv_open(to, from)))
1879     {
1880         if (!rec->wrbuf_iconv)
1881             rec->wrbuf_iconv = wrbuf_alloc();
1882
1883         wrbuf_rewind(rec->wrbuf_iconv);
1884
1885         wrbuf_iconv_write(rec->wrbuf_iconv, cd, buf, sz);
1886         wrbuf_iconv_reset(rec->wrbuf_iconv, cd);
1887
1888         buf = wrbuf_cstr(rec->wrbuf_iconv);
1889         sz = wrbuf_len(rec->wrbuf_iconv);
1890         yaz_iconv_close(cd);
1891     }
1892     if (len)
1893         *len = sz;
1894     return buf;
1895 }
1896
1897 ZOOM_API(int)
1898     ZOOM_record_error(ZOOM_record rec, const char **cp,
1899                       const char **addinfo, const char **diagset)
1900 {
1901     Z_NamePlusRecord *npr;
1902
1903     if (!rec)
1904         return 0;
1905     npr = rec->npr;
1906     if (npr && npr->which == Z_NamePlusRecord_surrogateDiagnostic)
1907     {
1908         Z_DiagRec *diag_rec = npr->u.surrogateDiagnostic;
1909         int error = YAZ_BIB1_UNSPECIFIED_ERROR;
1910         const char *add = 0;
1911
1912         if (diag_rec->which == Z_DiagRec_defaultFormat)
1913         {
1914             Z_DefaultDiagFormat *ddf = diag_rec->u.defaultFormat;
1915             oid_class oclass;
1916
1917             error = *ddf->condition;
1918             switch (ddf->which)
1919             {
1920             case Z_DefaultDiagFormat_v2Addinfo:
1921                 add = ddf->u.v2Addinfo;
1922                 break;
1923             case Z_DefaultDiagFormat_v3Addinfo:
1924                 add = ddf->u.v3Addinfo;
1925                 break;
1926             }
1927             if (diagset)
1928                 *diagset =
1929                     yaz_oid_to_string(yaz_oid_std(),
1930                                       ddf->diagnosticSetId, &oclass);
1931         }
1932         else
1933         {
1934             if (diagset)
1935                 *diagset = "Bib-1";
1936         }
1937         if (addinfo)
1938             *addinfo = add ? add : "";
1939         if (cp)
1940             *cp = diagbib1_str(error);
1941         return error;
1942     }
1943     return 0;
1944 }
1945
1946 ZOOM_API(const char *)
1947     ZOOM_record_get(ZOOM_record rec, const char *type_spec, int *len)
1948 {
1949     char type[40];
1950     char charset[40];
1951     char xpath[512];
1952     const char *cp;
1953     int i;
1954     Z_NamePlusRecord *npr;
1955
1956     if (len)
1957         *len = 0; /* default return */
1958
1959     if (!rec)
1960         return 0;
1961     npr = rec->npr;
1962     if (!npr)
1963         return 0;
1964
1965     cp = type_spec;
1966     for (i = 0; cp[i] && i < sizeof(type)-1; i++)
1967     {
1968         if (cp[i] == ';' || cp[i] == ' ')
1969             break;
1970         type[i] = cp[i];
1971     }
1972     type[i] = '\0';
1973     charset[0] = '\0';
1974     while (type_spec[i] == ';')
1975     {
1976         i++;
1977         while (type_spec[i] == ' ')
1978             i++;
1979         if (!strncmp(type_spec+i, "charset=", 8))
1980         {
1981             int j = 0;
1982             i = i + 8; /* skip charset= */
1983             for (j = 0; type_spec[i]  && j < sizeof(charset)-1; i++, j++)
1984             {
1985                 if (type_spec[i] == ';' || type_spec[i] == ' ')
1986                     break;
1987                 charset[j] = cp[i];
1988             }
1989             charset[j] = '\0';
1990         }
1991         else if (!strncmp(type_spec+i, "xpath=", 6))
1992         {
1993             int j = 0;
1994             i = i + 6;
1995             for (j = 0; type_spec[i] && j < sizeof(xpath)-1; i++, j++)
1996                 xpath[j] = cp[i];
1997             xpath[j] = '\0';
1998         }
1999         while (type_spec[i] == ' ')
2000             i++;
2001     }
2002     if (!strcmp(type, "database"))
2003     {
2004         if (len)
2005             *len = (npr->databaseName ? strlen(npr->databaseName) : 0);
2006         return npr->databaseName;
2007     }
2008     else if (!strcmp(type, "syntax"))
2009     {
2010         const char *desc = 0;
2011         if (npr->which == Z_NamePlusRecord_databaseRecord)
2012         {
2013             Z_External *r = (Z_External *) npr->u.databaseRecord;
2014             desc = yaz_oid_to_string(yaz_oid_std(), r->direct_reference, 0);
2015         }
2016         if (!desc)
2017             desc = "none";
2018         if (len)
2019             *len = strlen(desc);
2020         return desc;
2021     }
2022     if (npr->which != Z_NamePlusRecord_databaseRecord)
2023         return 0;
2024
2025     /* from now on - we have a database record .. */
2026     if (!strcmp(type, "render"))
2027     {
2028         Z_External *r = (Z_External *) npr->u.databaseRecord;
2029         const Odr_oid *oid = r->direct_reference;
2030
2031         /* render bibliographic record .. */
2032         if (r->which == Z_External_OPAC)
2033         {
2034             r = r->u.opac->bibliographicRecord;
2035             if (!r)
2036                 return 0;
2037             oid = r->direct_reference;
2038         }
2039         if (r->which == Z_External_sutrs)
2040             return record_iconv_return(rec, len,
2041                                        (char*) r->u.sutrs->buf,
2042                                        r->u.sutrs->len,
2043                                        charset);
2044         else if (r->which == Z_External_octet)
2045         {
2046             if (yaz_oid_is_iso2709(oid))
2047             {
2048                 const char *ret_buf = marc_iconv_return(
2049                     rec, YAZ_MARC_LINE, len,
2050                     (const char *) r->u.octet_aligned->buf,
2051                     r->u.octet_aligned->len,
2052                     charset);
2053                 if (ret_buf)
2054                     return ret_buf;
2055             }
2056             return record_iconv_return(rec, len,
2057                                        (const char *) r->u.octet_aligned->buf,
2058                                        r->u.octet_aligned->len,
2059                                        charset);
2060         }
2061         else if (r->which == Z_External_grs1)
2062         {
2063             if (!rec->wrbuf_marc)
2064                 rec->wrbuf_marc = wrbuf_alloc();
2065             wrbuf_rewind(rec->wrbuf_marc);
2066             yaz_display_grs1(rec->wrbuf_marc, r->u.grs1, 0);
2067             return record_iconv_return(rec, len,
2068                                        wrbuf_buf(rec->wrbuf_marc),
2069                                        wrbuf_len(rec->wrbuf_marc),
2070                                        charset);
2071         }
2072         return 0;
2073     }
2074     else if (!strcmp(type, "xml"))
2075     {
2076         Z_External *r = (Z_External *) npr->u.databaseRecord;
2077         const Odr_oid *oid = r->direct_reference;
2078
2079         /* render bibliographic record .. */
2080         if (r->which == Z_External_OPAC)
2081         {
2082             r = r->u.opac->bibliographicRecord;
2083             if (!r)
2084                 return 0;
2085             oid = r->direct_reference;
2086         }
2087
2088         if (r->which == Z_External_sutrs)
2089             return record_iconv_return(rec, len,
2090                                        (const char *) r->u.sutrs->buf,
2091                                        r->u.sutrs->len,
2092                                        charset);
2093         else if (r->which == Z_External_octet)
2094         {
2095             int marc_decode_type = YAZ_MARC_MARCXML;
2096             if (yaz_oid_is_iso2709(oid))
2097             {
2098                 const char *ret_buf = marc_iconv_return(
2099                     rec, marc_decode_type, len,
2100                     (const char *) r->u.octet_aligned->buf,
2101                     r->u.octet_aligned->len,
2102                     charset);
2103                 if (ret_buf)
2104                     return ret_buf;
2105             }
2106             return record_iconv_return(rec, len,
2107                                        (const char *) r->u.octet_aligned->buf,
2108                                        r->u.octet_aligned->len,
2109                                        charset);
2110         }
2111         else if (r->which == Z_External_grs1)
2112         {
2113             if (len) *len = 5;
2114             return "GRS-1";
2115         }
2116         return 0;
2117     }
2118     else if (!strcmp(type, "raw"))
2119     {
2120         Z_External *r = (Z_External *) npr->u.databaseRecord;
2121
2122         if (r->which == Z_External_sutrs)
2123         {
2124             if (len) *len = r->u.sutrs->len;
2125             return (const char *) r->u.sutrs->buf;
2126         }
2127         else if (r->which == Z_External_octet)
2128         {
2129             if (len) *len = r->u.octet_aligned->len;
2130             return (const char *) r->u.octet_aligned->buf;
2131         }
2132         else /* grs-1, explain, OPAC, ... */
2133         {
2134             if (len) *len = -1;
2135             return (const char *) npr->u.databaseRecord;
2136         }
2137         return 0;
2138     }
2139     else if (!strcmp (type, "ext"))
2140     {
2141         if (len) *len = -1;
2142         return (const char *) npr->u.databaseRecord;
2143     }
2144     else if (!strcmp (type, "opac"))
2145
2146     {
2147         Z_External *r = (Z_External *) npr->u.databaseRecord;
2148         if (r->which == Z_External_OPAC)
2149         {
2150             if (!rec->wrbuf_opac)
2151                 rec->wrbuf_opac = wrbuf_alloc();
2152             wrbuf_rewind(rec->wrbuf_opac);
2153             yaz_display_OPAC(rec->wrbuf_opac, r->u.opac, 0);
2154             return record_iconv_return(rec, len,
2155                                        wrbuf_buf(rec->wrbuf_opac),
2156                                        wrbuf_len(rec->wrbuf_opac),
2157                                        charset);
2158         }
2159     }
2160     return 0;
2161 }
2162
2163 static int strcmp_null(const char *v1, const char *v2)
2164 {
2165     if (!v1 && !v2)
2166         return 0;
2167     if (!v1 || !v2)
2168         return -1;
2169     return strcmp(v1, v2);
2170 }
2171
2172 static size_t record_hash(int pos)
2173 {
2174     if (pos < 0)
2175         pos = 0;
2176     return pos % RECORD_HASH_SIZE;
2177 }
2178
2179 static void record_cache_add(ZOOM_resultset r, Z_NamePlusRecord *npr,
2180                              int pos,
2181                              const char *syntax, const char *elementSetName)
2182 {
2183     ZOOM_record_cache rc;
2184
2185     ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
2186     ZOOM_connection_put_event(r->connection, event);
2187
2188     for (rc = r->record_hash[record_hash(pos)]; rc; rc = rc->next)
2189     {
2190         if (pos == rc->pos)
2191         {
2192             if (strcmp_null(r->schema, rc->schema))
2193                 continue;
2194             if (strcmp_null(elementSetName,rc->elementSetName))
2195                 continue;
2196             if (strcmp_null(syntax, rc->syntax))
2197                 continue;
2198             /* not destroying rc->npr (it's handled by nmem )*/
2199             rc->rec.npr = npr;
2200             /* keeping wrbuf_marc too */
2201             return;
2202         }
2203     }
2204     rc = (ZOOM_record_cache) odr_malloc(r->odr, sizeof(*rc));
2205     rc->rec.npr = npr;
2206     rc->rec.odr = 0;
2207     rc->rec.wrbuf_marc = 0;
2208     rc->rec.wrbuf_iconv = 0;
2209     rc->rec.wrbuf_opac = 0;
2210     if (elementSetName)
2211         rc->elementSetName = odr_strdup(r->odr, elementSetName);
2212     else
2213         rc->elementSetName = 0;
2214
2215     if (syntax)
2216         rc->syntax = odr_strdup(r->odr, syntax);
2217     else
2218         rc->syntax = 0;
2219
2220     if (r->schema)
2221         rc->schema = odr_strdup(r->odr, r->schema);
2222     else
2223         rc->schema = 0;
2224
2225     rc->pos = pos;
2226     rc->next = r->record_hash[record_hash(pos)];
2227     r->record_hash[record_hash(pos)] = rc;
2228 }
2229
2230 static ZOOM_record record_cache_lookup(ZOOM_resultset r, int pos,
2231                                        const char *syntax,
2232                                        const char *elementSetName)
2233 {
2234     ZOOM_record_cache rc;
2235
2236     for (rc = r->record_hash[record_hash(pos)]; rc; rc = rc->next)
2237     {
2238         if (pos == rc->pos)
2239         {
2240             if (strcmp_null(r->schema, rc->schema))
2241                 continue;
2242             if (strcmp_null(elementSetName,rc->elementSetName))
2243                 continue;
2244             if (strcmp_null(syntax, rc->syntax))
2245                 continue;
2246             return &rc->rec;
2247         }
2248     }
2249     return 0;
2250 }
2251
2252 static void handle_records(ZOOM_connection c, Z_Records *sr,
2253                            int present_phase)
2254 {
2255     ZOOM_resultset resultset;
2256     int *start, *count;
2257     const char *syntax = 0, *elementSetName = 0;
2258
2259     if (!c->tasks)
2260         return ;
2261     switch (c->tasks->which)
2262     {
2263     case ZOOM_TASK_SEARCH:
2264         resultset = c->tasks->u.search.resultset;
2265         start = &c->tasks->u.search.start;
2266         count = &c->tasks->u.search.count;
2267         syntax = c->tasks->u.search.syntax;
2268         elementSetName = c->tasks->u.search.elementSetName;
2269         break;
2270     case ZOOM_TASK_RETRIEVE:
2271         resultset = c->tasks->u.retrieve.resultset;
2272         start = &c->tasks->u.retrieve.start;
2273         count = &c->tasks->u.retrieve.count;
2274         syntax = c->tasks->u.retrieve.syntax;
2275         elementSetName = c->tasks->u.retrieve.elementSetName;
2276         break;
2277     default:
2278         return;
2279     }
2280     if (sr && sr->which == Z_Records_NSD)
2281         response_default_diag(c, sr->u.nonSurrogateDiagnostic);
2282     else if (sr && sr->which == Z_Records_multipleNSD)
2283     {
2284         if (sr->u.multipleNonSurDiagnostics->num_diagRecs >= 1)
2285             response_diag(c, sr->u.multipleNonSurDiagnostics->diagRecs[0]);
2286         else
2287             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2288     }
2289     else
2290     {
2291         if (*count + *start > resultset->size)
2292             *count = resultset->size - *start;
2293         if (*count < 0)
2294             *count = 0;
2295         if (sr && sr->which == Z_Records_DBOSD)
2296         {
2297             int i;
2298             NMEM nmem = odr_extract_mem(c->odr_in);
2299             Z_NamePlusRecordList *p =
2300                 sr->u.databaseOrSurDiagnostics;
2301             for (i = 0; i<p->num_records; i++)
2302             {
2303                 record_cache_add(resultset, p->records[i], i + *start,
2304                                  syntax, elementSetName);
2305             }
2306             *count -= i;
2307             if (*count < 0)
2308                 *count = 0;
2309             *start += i;
2310             yaz_log(log_details,
2311                     "handle_records resultset=%p start=%d count=%d",
2312                     resultset, *start, *count);
2313
2314             /* transfer our response to search_nmem .. we need it later */
2315             nmem_transfer(odr_getmem(resultset->odr), nmem);
2316             nmem_destroy(nmem);
2317             if (present_phase && p->num_records == 0)
2318             {
2319                 /* present response and we didn't get any records! */
2320                 Z_NamePlusRecord *myrec =
2321                     zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2322                 record_cache_add(resultset, myrec, *start,
2323                                  syntax, elementSetName);
2324             }
2325         }
2326         else if (present_phase)
2327         {
2328             /* present response and we didn't get any records! */
2329             Z_NamePlusRecord *myrec =
2330                 zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2331             record_cache_add(resultset, myrec, *start, syntax, elementSetName);
2332         }
2333     }
2334 }
2335
2336 static void handle_present_response(ZOOM_connection c, Z_PresentResponse *pr)
2337 {
2338     handle_records(c, pr->records, 1);
2339 }
2340
2341 static void handle_queryExpressionTerm(ZOOM_options opt, const char *name,
2342                                        Z_Term *term)
2343 {
2344     switch (term->which)
2345     {
2346     case Z_Term_general:
2347         ZOOM_options_setl(opt, name,
2348                           (const char *)(term->u.general->buf),
2349                           term->u.general->len);
2350         break;
2351     case Z_Term_characterString:
2352         ZOOM_options_set(opt, name, term->u.characterString);
2353         break;
2354     case Z_Term_numeric:
2355         ZOOM_options_set_int(opt, name, *term->u.numeric);
2356         break;
2357     }
2358 }
2359
2360 static void handle_queryExpression(ZOOM_options opt, const char *name,
2361                                    Z_QueryExpression *exp)
2362 {
2363     char opt_name[80];
2364
2365     switch (exp->which)
2366     {
2367     case Z_QueryExpression_term:
2368         if (exp->u.term && exp->u.term->queryTerm)
2369         {
2370             sprintf(opt_name, "%s.term", name);
2371             handle_queryExpressionTerm(opt, opt_name, exp->u.term->queryTerm);
2372         }
2373         break;
2374     case Z_QueryExpression_query:
2375         break;
2376     }
2377 }
2378
2379 static void handle_searchResult(ZOOM_connection c, ZOOM_resultset resultset,
2380                                 Z_OtherInformation *o)
2381 {
2382     int i;
2383     for (i = 0; o && i < o->num_elements; i++)
2384     {
2385         if (o->list[i]->which == Z_OtherInfo_externallyDefinedInfo)
2386         {
2387             Z_External *ext = o->list[i]->information.externallyDefinedInfo;
2388
2389             if (ext->which == Z_External_searchResult1)
2390             {
2391                 int j;
2392                 Z_SearchInfoReport *sr = ext->u.searchResult1;
2393
2394                 if (sr->num)
2395                     ZOOM_options_set_int(
2396                         resultset->options, "searchresult.size", sr->num);
2397
2398                 for (j = 0; j < sr->num; j++)
2399                 {
2400                     Z_SearchInfoReport_s *ent =
2401                         ext->u.searchResult1->elements[j];
2402                     char pref[80];
2403
2404                     sprintf(pref, "searchresult.%d", j);
2405
2406                     if (ent->subqueryId)
2407                     {
2408                         char opt_name[80];
2409                         sprintf(opt_name, "%s.id", pref);
2410                         ZOOM_options_set(resultset->options, opt_name,
2411                                          ent->subqueryId);
2412                     }
2413                     if (ent->subqueryExpression)
2414                     {
2415                         char opt_name[80];
2416                         sprintf(opt_name, "%s.subquery", pref);
2417                         handle_queryExpression(resultset->options, opt_name,
2418                                                ent->subqueryExpression);
2419                     }
2420                     if (ent->subqueryInterpretation)
2421                     {
2422                         char opt_name[80];
2423                         sprintf(opt_name, "%s.interpretation", pref);
2424                         handle_queryExpression(resultset->options, opt_name,
2425                                                ent->subqueryInterpretation);
2426                     }
2427                     if (ent->subqueryRecommendation)
2428                     {
2429                         char opt_name[80];
2430                         sprintf(opt_name, "%s.recommendation", pref);
2431                         handle_queryExpression(resultset->options, opt_name,
2432                                                ent->subqueryRecommendation);
2433                     }
2434                     if (ent->subqueryCount)
2435                     {
2436                         char opt_name[80];
2437                         sprintf(opt_name, "%s.count", pref);
2438                         ZOOM_options_set_int(resultset->options, opt_name,
2439                                              *ent->subqueryCount);
2440                     }
2441                 }
2442             }
2443         }
2444     }
2445 }
2446
2447 static void handle_search_response(ZOOM_connection c, Z_SearchResponse *sr)
2448 {
2449     ZOOM_resultset resultset;
2450     ZOOM_Event event;
2451
2452     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
2453         return ;
2454
2455     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
2456     ZOOM_connection_put_event(c, event);
2457
2458     resultset = c->tasks->u.search.resultset;
2459
2460     if (sr->resultSetStatus)
2461     {
2462         ZOOM_options_set_int(resultset->options, "resultSetStatus",
2463                              *sr->resultSetStatus);
2464     }
2465     if (sr->presentStatus)
2466     {
2467         ZOOM_options_set_int(resultset->options, "presentStatus",
2468                              *sr->presentStatus);
2469     }
2470     handle_searchResult(c, resultset, sr->additionalSearchInfo);
2471
2472     resultset->size = *sr->resultCount;
2473     handle_records(c, sr->records, 0);
2474 }
2475
2476 static void sort_response(ZOOM_connection c, Z_SortResponse *res)
2477 {
2478     if (res->diagnostics && res->num_diagnostics > 0)
2479         response_diag(c, res->diagnostics[0]);
2480 }
2481
2482 static int scan_response(ZOOM_connection c, Z_ScanResponse *res)
2483 {
2484     NMEM nmem = odr_extract_mem(c->odr_in);
2485     ZOOM_scanset scan;
2486
2487     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
2488         return 0;
2489     scan = c->tasks->u.scan.scan;
2490
2491     if (res->entries && res->entries->nonsurrogateDiagnostics)
2492         response_diag(c, res->entries->nonsurrogateDiagnostics[0]);
2493     scan->scan_response = res;
2494     scan->srw_scan_response = 0;
2495     nmem_transfer(odr_getmem(scan->odr), nmem);
2496     if (res->stepSize)
2497         ZOOM_options_set_int(scan->options, "stepSize", *res->stepSize);
2498     if (res->positionOfTerm)
2499         ZOOM_options_set_int(scan->options, "position", *res->positionOfTerm);
2500     if (res->scanStatus)
2501         ZOOM_options_set_int(scan->options, "scanStatus", *res->scanStatus);
2502     if (res->numberOfEntriesReturned)
2503         ZOOM_options_set_int(scan->options, "number",
2504                              *res->numberOfEntriesReturned);
2505     nmem_destroy(nmem);
2506     return 1;
2507 }
2508
2509 static zoom_ret send_sort(ZOOM_connection c,
2510                           ZOOM_resultset resultset)
2511 {
2512     if (c->error)
2513         resultset->r_sort_spec = 0;
2514     if (resultset->r_sort_spec)
2515     {
2516         Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_sortRequest);
2517         Z_SortRequest *req = apdu->u.sortRequest;
2518
2519         req->num_inputResultSetNames = 1;
2520         req->inputResultSetNames = (Z_InternationalString **)
2521             odr_malloc(c->odr_out, sizeof(*req->inputResultSetNames));
2522         req->inputResultSetNames[0] =
2523             odr_strdup(c->odr_out, resultset->setname);
2524         req->sortedResultSetName = odr_strdup(c->odr_out, resultset->setname);
2525         req->sortSequence = resultset->r_sort_spec;
2526         resultset->r_sort_spec = 0;
2527         return send_APDU(c, apdu);
2528     }
2529     return zoom_complete;
2530 }
2531
2532 static zoom_ret send_present(ZOOM_connection c)
2533 {
2534     Z_APDU *apdu = 0;
2535     Z_PresentRequest *req = 0;
2536     int i = 0;
2537     const char *syntax = 0;
2538     const char *elementSetName = 0;
2539     ZOOM_resultset  resultset;
2540     int *start, *count;
2541
2542     if (!c->tasks)
2543     {
2544         yaz_log(log_details, "%p send_present no tasks", c);
2545         return zoom_complete;
2546     }
2547
2548     switch (c->tasks->which)
2549     {
2550     case ZOOM_TASK_SEARCH:
2551         resultset = c->tasks->u.search.resultset;
2552         start = &c->tasks->u.search.start;
2553         count = &c->tasks->u.search.count;
2554         syntax = c->tasks->u.search.syntax;
2555         elementSetName = c->tasks->u.search.elementSetName;
2556         break;
2557     case ZOOM_TASK_RETRIEVE:
2558         resultset = c->tasks->u.retrieve.resultset;
2559         start = &c->tasks->u.retrieve.start;
2560         count = &c->tasks->u.retrieve.count;
2561         syntax = c->tasks->u.retrieve.syntax;
2562         elementSetName = c->tasks->u.retrieve.elementSetName;
2563         break;
2564     default:
2565         return zoom_complete;
2566     }
2567     yaz_log(log_details, "%p send_present start=%d count=%d",
2568             c, *start, *count);
2569
2570     if (*start < 0 || *count < 0 || *start + *count > resultset->size)
2571     {
2572         set_dset_error(c, YAZ_BIB1_PRESENT_REQUEST_OUT_OF_RANGE, "Bib-1",
2573                        "", 0);
2574     }
2575     if (c->error)                  /* don't continue on error */
2576         return zoom_complete;
2577     yaz_log(log_details, "send_present resultset=%p start=%d count=%d",
2578             resultset, *start, *count);
2579
2580     for (i = 0; i < *count; i++)
2581     {
2582         ZOOM_record rec =
2583             record_cache_lookup(resultset, i + *start, syntax, elementSetName);
2584         if (!rec)
2585             break;
2586         else
2587         {
2588             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
2589             ZOOM_connection_put_event(c, event);
2590         }
2591     }
2592     *start += i;
2593     *count -= i;
2594
2595     if (*count == 0)
2596     {
2597         yaz_log(log_details, "%p send_present skip=%d no more to fetch", c, i);
2598         return zoom_complete;
2599     }
2600
2601     apdu = zget_APDU(c->odr_out, Z_APDU_presentRequest);
2602     req = apdu->u.presentRequest;
2603
2604     if (i)
2605         yaz_log(log_details, "%p send_present skip=%d", c, i);
2606
2607     *req->resultSetStartPoint = *start + 1;
2608     *req->numberOfRecordsRequested = resultset->step>0 ?
2609         resultset->step : *count;
2610     if (*req->numberOfRecordsRequested + *start > resultset->size)
2611         *req->numberOfRecordsRequested = resultset->size - *start;
2612     assert(*req->numberOfRecordsRequested > 0);
2613
2614     if (syntax && *syntax)
2615         req->preferredRecordSyntax =
2616             zoom_yaz_str_to_z3950oid(c, CLASS_RECSYN, syntax);
2617
2618     if (resultset->schema && *resultset->schema)
2619     {
2620         Z_RecordComposition *compo = (Z_RecordComposition *)
2621             odr_malloc(c->odr_out, sizeof(*compo));
2622
2623         req->recordComposition = compo;
2624         compo->which = Z_RecordComp_complex;
2625         compo->u.complex = (Z_CompSpec *)
2626             odr_malloc(c->odr_out, sizeof(*compo->u.complex));
2627         compo->u.complex->selectAlternativeSyntax = (bool_t *)
2628             odr_malloc(c->odr_out, sizeof(bool_t));
2629         *compo->u.complex->selectAlternativeSyntax = 0;
2630
2631         compo->u.complex->generic = (Z_Specification *)
2632             odr_malloc(c->odr_out, sizeof(*compo->u.complex->generic));
2633
2634         compo->u.complex->generic->which = Z_Schema_oid;
2635         compo->u.complex->generic->schema.oid = (Odr_oid *)
2636             zoom_yaz_str_to_z3950oid (c, CLASS_SCHEMA, resultset->schema);
2637
2638         if (!compo->u.complex->generic->schema.oid)
2639         {
2640             /* OID wasn't a schema! Try record syntax instead. */
2641
2642             compo->u.complex->generic->schema.oid = (Odr_oid *)
2643                 zoom_yaz_str_to_z3950oid (c, CLASS_RECSYN, resultset->schema);
2644         }
2645         if (elementSetName && *elementSetName)
2646         {
2647             compo->u.complex->generic->elementSpec = (Z_ElementSpec *)
2648                 odr_malloc(c->odr_out, sizeof(Z_ElementSpec));
2649             compo->u.complex->generic->elementSpec->which =
2650                 Z_ElementSpec_elementSetName;
2651             compo->u.complex->generic->elementSpec->u.elementSetName =
2652                 odr_strdup(c->odr_out, elementSetName);
2653         }
2654         else
2655             compo->u.complex->generic->elementSpec = 0;
2656         compo->u.complex->num_dbSpecific = 0;
2657         compo->u.complex->dbSpecific = 0;
2658         compo->u.complex->num_recordSyntax = 0;
2659         compo->u.complex->recordSyntax = 0;
2660     }
2661     else if (elementSetName && *elementSetName)
2662     {
2663         Z_ElementSetNames *esn = (Z_ElementSetNames *)
2664             odr_malloc(c->odr_out, sizeof(*esn));
2665         Z_RecordComposition *compo = (Z_RecordComposition *)
2666             odr_malloc(c->odr_out, sizeof(*compo));
2667
2668         esn->which = Z_ElementSetNames_generic;
2669         esn->u.generic = odr_strdup(c->odr_out, elementSetName);
2670         compo->which = Z_RecordComp_simple;
2671         compo->u.simple = esn;
2672         req->recordComposition = compo;
2673     }
2674     req->resultSetId = odr_strdup(c->odr_out, resultset->setname);
2675     return send_APDU(c, apdu);
2676 }
2677
2678 ZOOM_API(ZOOM_scanset)
2679     ZOOM_connection_scan(ZOOM_connection c, const char *start)
2680 {
2681     ZOOM_scanset s;
2682     ZOOM_query q = ZOOM_query_create();
2683
2684     ZOOM_query_prefix(q, start);
2685
2686     s = ZOOM_connection_scan1(c, q);
2687     ZOOM_query_destroy(q);
2688     return s;
2689
2690 }
2691
2692 ZOOM_API(ZOOM_scanset)
2693     ZOOM_connection_scan1(ZOOM_connection c, ZOOM_query q)
2694 {
2695     ZOOM_scanset scan = 0;
2696
2697     if (!q->z_query)
2698         return 0;
2699     scan = (ZOOM_scanset) xmalloc(sizeof(*scan));
2700     scan->connection = c;
2701     scan->odr = odr_createmem(ODR_DECODE);
2702     scan->options = ZOOM_options_create_with_parent(c->options);
2703     scan->refcount = 1;
2704     scan->scan_response = 0;
2705     scan->srw_scan_response = 0;
2706
2707     scan->query = q;
2708     (q->refcount)++;
2709     scan->databaseNames = set_DatabaseNames(c, c->options,
2710                                             &scan->num_databaseNames,
2711                                             scan->odr);
2712
2713     if (1)
2714     {
2715         ZOOM_task task = ZOOM_connection_add_task(c, ZOOM_TASK_SCAN);
2716         task->u.scan.scan = scan;
2717
2718         (scan->refcount)++;
2719         if (!c->async)
2720         {
2721             while (ZOOM_event(1, &c))
2722                 ;
2723         }
2724     }
2725     return scan;
2726 }
2727
2728 ZOOM_API(void)
2729     ZOOM_scanset_destroy(ZOOM_scanset scan)
2730 {
2731     if (!scan)
2732         return;
2733     (scan->refcount)--;
2734     if (scan->refcount == 0)
2735     {
2736         ZOOM_query_destroy(scan->query);
2737
2738         odr_destroy(scan->odr);
2739
2740         ZOOM_options_destroy(scan->options);
2741         xfree(scan);
2742     }
2743 }
2744
2745 static zoom_ret send_package(ZOOM_connection c)
2746 {
2747     ZOOM_Event event;
2748
2749     yaz_log(log_details, "%p send_package", c);
2750     if (!c->tasks)
2751         return zoom_complete;
2752     assert (c->tasks->which == ZOOM_TASK_PACKAGE);
2753
2754     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
2755     ZOOM_connection_put_event(c, event);
2756
2757     c->buf_out = c->tasks->u.package->buf_out;
2758     c->len_out = c->tasks->u.package->len_out;
2759
2760     return do_write(c);
2761 }
2762
2763 static zoom_ret ZOOM_connection_send_scan(ZOOM_connection c)
2764 {
2765     ZOOM_scanset scan;
2766     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_scanRequest);
2767     Z_ScanRequest *req = apdu->u.scanRequest;
2768
2769     yaz_log(log_details, "%p send_scan", c);
2770     if (!c->tasks)
2771         return zoom_complete;
2772     assert (c->tasks->which == ZOOM_TASK_SCAN);
2773     scan = c->tasks->u.scan.scan;
2774
2775     /* Z39.50 scan can only carry RPN */
2776     if (scan->query->z_query->which == Z_Query_type_1 ||
2777         scan->query->z_query->which == Z_Query_type_101)
2778     {
2779         Z_RPNQuery *rpn = scan->query->z_query->u.type_1;
2780         const char *cp = ZOOM_options_get(scan->options, "rpnCharset");
2781         if (cp)
2782         {
2783             yaz_iconv_t cd = yaz_iconv_open(cp, "UTF-8");
2784             if (cd)
2785             {
2786                 rpn = yaz_copy_z_RPNQuery(rpn, c->odr_out);
2787
2788                 yaz_query_charset_convert_rpnquery(
2789                     rpn, c->odr_out, cd);
2790                 yaz_iconv_close(cd);
2791             }
2792         }
2793         req->attributeSet = rpn->attributeSetId;
2794         if (!req->attributeSet)
2795             req->attributeSet = odr_oiddup(c->odr_out, yaz_oid_attset_bib_1);
2796         if (rpn->RPNStructure->which == Z_RPNStructure_simple &&
2797             rpn->RPNStructure->u.simple->which == Z_Operand_APT)
2798         {
2799             req->termListAndStartPoint =
2800                 rpn->RPNStructure->u.simple->u.attributesPlusTerm;
2801         }
2802         else
2803         {
2804             set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
2805             return zoom_complete;
2806         }
2807     }
2808     else
2809     {
2810         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
2811         return zoom_complete;
2812     }
2813
2814     *req->numberOfTermsRequested =
2815         ZOOM_options_get_int(scan->options, "number", 10);
2816
2817     req->preferredPositionInResponse =
2818         odr_intdup(c->odr_out,
2819                    ZOOM_options_get_int(scan->options, "position", 1));
2820
2821     req->stepSize =
2822         odr_intdup(c->odr_out,
2823                    ZOOM_options_get_int(scan->options, "stepSize", 0));
2824
2825     req->databaseNames = scan->databaseNames;
2826     req->num_databaseNames = scan->num_databaseNames;
2827
2828     return send_APDU(c, apdu);
2829 }
2830
2831 #if YAZ_HAVE_XML2
2832 static zoom_ret ZOOM_connection_srw_send_scan(ZOOM_connection c)
2833 {
2834     ZOOM_scanset scan;
2835     Z_SRW_PDU *sr = 0;
2836     const char *option_val = 0;
2837
2838     if (!c->tasks)
2839         return zoom_complete;
2840     assert (c->tasks->which == ZOOM_TASK_SCAN);
2841     scan = c->tasks->u.scan.scan;
2842
2843     sr = yaz_srw_get_pdu(c->odr_out, Z_SRW_scan_request, c->sru_version);
2844
2845     /* SRU scan can only carry CQL and PQF */
2846     if (scan->query->z_query->which == Z_Query_type_104)
2847     {
2848         sr->u.scan_request->query_type = Z_SRW_query_type_cql;
2849         sr->u.scan_request->scanClause.cql = scan->query->query_string;
2850     }
2851     else if (scan->query->z_query->which == Z_Query_type_1
2852              || scan->query->z_query->which == Z_Query_type_101)
2853     {
2854         sr->u.scan_request->query_type = Z_SRW_query_type_pqf;
2855         sr->u.scan_request->scanClause.pqf = scan->query->query_string;
2856     }
2857     else
2858     {
2859         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
2860         return zoom_complete;
2861     }
2862
2863     sr->u.scan_request->maximumTerms = odr_intdup(
2864         c->odr_out, ZOOM_options_get_int(scan->options, "number", 10));
2865
2866     sr->u.scan_request->responsePosition = odr_intdup(
2867         c->odr_out, ZOOM_options_get_int(scan->options, "position", 1));
2868
2869     option_val = ZOOM_options_get(scan->options, "extraArgs");
2870     if (option_val)
2871         sr->extra_args = odr_strdup(c->odr_out, option_val);
2872     return send_srw(c, sr);
2873 }
2874 #else
2875 static zoom_ret ZOOM_connection_srw_send_scan(ZOOM_connection c)
2876 {
2877     return zoom_complete;
2878 }
2879 #endif
2880
2881
2882 ZOOM_API(size_t)
2883     ZOOM_scanset_size(ZOOM_scanset scan)
2884 {
2885     if (!scan)
2886         return 0;
2887
2888     if (scan->scan_response && scan->scan_response->entries)
2889         return scan->scan_response->entries->num_entries;
2890     else if (scan->srw_scan_response)
2891         return scan->srw_scan_response->num_terms;
2892     return 0;
2893 }
2894
2895 static void ZOOM_scanset_term_x(ZOOM_scanset scan, size_t pos,
2896                                 int *occ,
2897                                 const char **value_term, size_t *value_len,
2898                                 const char **disp_term, size_t *disp_len)
2899 {
2900     size_t noent = ZOOM_scanset_size(scan);
2901
2902     *value_term = 0;
2903     *value_len = 0;
2904
2905     *disp_term = 0;
2906     *disp_len = 0;
2907
2908     *occ = 0;
2909     if (pos >= noent || pos < 0)
2910         return;
2911     if (scan->scan_response)
2912     {
2913         Z_ScanResponse *res = scan->scan_response;
2914         if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2915         {
2916             Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2917
2918             *value_term = (const char *) t->term->u.general->buf;
2919             *value_len = t->term->u.general->len;
2920             if (t->displayTerm)
2921             {
2922                 *disp_term = t->displayTerm;
2923                 *disp_len = strlen(*disp_term);
2924             }
2925             else if (t->term->which == Z_Term_general)
2926             {
2927                 *disp_term = (const char *) t->term->u.general->buf;
2928                 *disp_len = t->term->u.general->len;
2929             }
2930             *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2931         }
2932     }
2933     if (scan->srw_scan_response)
2934     {
2935         Z_SRW_scanResponse *res = scan->srw_scan_response;
2936         Z_SRW_scanTerm *t = res->terms + pos;
2937         if (t)
2938         {
2939             *value_term = t->value;
2940             *value_len = strlen(*value_term);
2941
2942             if (t->displayTerm)
2943                 *disp_term = t->displayTerm;
2944             else
2945                 *disp_term = t->value;
2946             *disp_len = strlen(*disp_term);
2947             *occ = t->numberOfRecords ? *t->numberOfRecords : 0;
2948         }
2949     }
2950 }
2951
2952 ZOOM_API(const char *)
2953     ZOOM_scanset_term(ZOOM_scanset scan, size_t pos,
2954                       int *occ, int *len)
2955 {
2956     const char *value_term = 0;
2957     size_t value_len = 0;
2958     const char *disp_term = 0;
2959     size_t disp_len = 0;
2960
2961     ZOOM_scanset_term_x(scan, pos, occ, &value_term, &value_len,
2962                         &disp_term, &disp_len);
2963
2964     *len = value_len;
2965     return value_term;
2966 }
2967
2968 ZOOM_API(const char *)
2969     ZOOM_scanset_display_term(ZOOM_scanset scan, size_t pos,
2970                               int *occ, int *len)
2971 {
2972     const char *value_term = 0;
2973     size_t value_len = 0;
2974     const char *disp_term = 0;
2975     size_t disp_len = 0;
2976
2977     ZOOM_scanset_term_x(scan, pos, occ, &value_term, &value_len,
2978                         &disp_term, &disp_len);
2979
2980     *len = disp_len;
2981     return disp_term;
2982 }
2983
2984 ZOOM_API(const char *)
2985     ZOOM_scanset_option_get(ZOOM_scanset scan, const char *key)
2986 {
2987     return ZOOM_options_get(scan->options, key);
2988 }
2989
2990 ZOOM_API(void)
2991     ZOOM_scanset_option_set(ZOOM_scanset scan, const char *key,
2992                             const char *val)
2993 {
2994     ZOOM_options_set(scan->options, key, val);
2995 }
2996
2997 static Z_APDU *create_es_package(ZOOM_package p, const Odr_oid *oid)
2998 {
2999     const char *str;
3000     Z_APDU *apdu = zget_APDU(p->odr_out, Z_APDU_extendedServicesRequest);
3001     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
3002
3003     str = ZOOM_options_get(p->options, "package-name");
3004     if (str && *str)
3005         req->packageName = odr_strdup(p->odr_out, str);
3006
3007     str = ZOOM_options_get(p->options, "user-id");
3008     if (str)
3009         req->userId = odr_strdup(p->odr_out, str);
3010
3011     req->packageType = odr_oiddup(p->odr_out, oid);
3012
3013     str = ZOOM_options_get(p->options, "function");
3014     if (str)
3015     {
3016         if (!strcmp (str, "create"))
3017             *req->function = Z_ExtendedServicesRequest_create;
3018         if (!strcmp (str, "delete"))
3019             *req->function = Z_ExtendedServicesRequest_delete;
3020         if (!strcmp (str, "modify"))
3021             *req->function = Z_ExtendedServicesRequest_modify;
3022     }
3023
3024     str = ZOOM_options_get(p->options, "waitAction");
3025     if (str)
3026     {
3027         if (!strcmp (str, "wait"))
3028             *req->waitAction = Z_ExtendedServicesRequest_wait;
3029         if (!strcmp (str, "waitIfPossible"))
3030             *req->waitAction = Z_ExtendedServicesRequest_waitIfPossible;
3031         if (!strcmp (str, "dontWait"))
3032             *req->waitAction = Z_ExtendedServicesRequest_dontWait;
3033         if (!strcmp (str, "dontReturnPackage"))
3034             *req->waitAction = Z_ExtendedServicesRequest_dontReturnPackage;
3035     }
3036     return apdu;
3037 }
3038
3039 static const char *ill_array_lookup(void *clientData, const char *idx)
3040 {
3041     ZOOM_package p = (ZOOM_package) clientData;
3042     return ZOOM_options_get(p->options, idx+4);
3043 }
3044
3045 static Z_External *encode_ill_request(ZOOM_package p)
3046 {
3047     ODR out = p->odr_out;
3048     ILL_Request *req;
3049     Z_External *r = 0;
3050     struct ill_get_ctl ctl;
3051
3052     ctl.odr = p->odr_out;
3053     ctl.clientData = p;
3054     ctl.f = ill_array_lookup;
3055
3056     req = ill_get_ILLRequest(&ctl, "ill", 0);
3057
3058     if (!ill_Request(out, &req, 0, 0))
3059     {
3060         int ill_request_size;
3061         char *ill_request_buf = odr_getbuf(out, &ill_request_size, 0);
3062         if (ill_request_buf)
3063             odr_setbuf(out, ill_request_buf, ill_request_size, 1);
3064         return 0;
3065     }
3066     else
3067     {
3068         int illRequest_size = 0;
3069         char *illRequest_buf = odr_getbuf(out, &illRequest_size, 0);
3070
3071         r = (Z_External *) odr_malloc(out, sizeof(*r));
3072         r->direct_reference = odr_oiddup(out, yaz_oid_general_isoill_1);
3073         r->indirect_reference = 0;
3074         r->descriptor = 0;
3075         r->which = Z_External_single;
3076
3077         r->u.single_ASN1_type =
3078             odr_create_Odr_oct(out,
3079                                (unsigned char *)illRequest_buf,
3080                                illRequest_size);
3081     }
3082     return r;
3083 }
3084
3085 static Z_ItemOrder *encode_item_order(ZOOM_package p)
3086 {
3087     Z_ItemOrder *req = (Z_ItemOrder *) odr_malloc(p->odr_out, sizeof(*req));
3088     const char *str;
3089
3090     req->which = Z_IOItemOrder_esRequest;
3091     req->u.esRequest = (Z_IORequest *)
3092         odr_malloc(p->odr_out,sizeof(Z_IORequest));
3093
3094     /* to keep part ... */
3095     req->u.esRequest->toKeep = (Z_IOOriginPartToKeep *)
3096         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartToKeep));
3097     req->u.esRequest->toKeep->supplDescription = 0;
3098     req->u.esRequest->toKeep->contact = (Z_IOContact *)
3099         odr_malloc(p->odr_out, sizeof(*req->u.esRequest->toKeep->contact));
3100
3101     str = ZOOM_options_get(p->options, "contact-name");
3102     req->u.esRequest->toKeep->contact->name = str ?
3103         odr_strdup(p->odr_out, str) : 0;
3104
3105     str = ZOOM_options_get(p->options, "contact-phone");
3106     req->u.esRequest->toKeep->contact->phone = str ?
3107         odr_strdup(p->odr_out, str) : 0;
3108
3109     str = ZOOM_options_get(p->options, "contact-email");
3110     req->u.esRequest->toKeep->contact->email = str ?
3111         odr_strdup(p->odr_out, str) : 0;
3112
3113     req->u.esRequest->toKeep->addlBilling = 0;
3114
3115     /* not to keep part ... */
3116     req->u.esRequest->notToKeep = (Z_IOOriginPartNotToKeep *)
3117         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartNotToKeep));
3118
3119     str = ZOOM_options_get(p->options, "itemorder-setname");
3120     if (!str)
3121         str = "default";
3122
3123     if (!*str)
3124         req->u.esRequest->notToKeep->resultSetItem = 0;
3125     else
3126     {
3127         req->u.esRequest->notToKeep->resultSetItem = (Z_IOResultSetItem *)
3128             odr_malloc(p->odr_out, sizeof(Z_IOResultSetItem));
3129
3130         req->u.esRequest->notToKeep->resultSetItem->resultSetId =
3131             odr_strdup(p->odr_out, str);
3132         req->u.esRequest->notToKeep->resultSetItem->item =
3133             (int *) odr_malloc(p->odr_out, sizeof(int));
3134
3135         str = ZOOM_options_get(p->options, "itemorder-item");
3136         *req->u.esRequest->notToKeep->resultSetItem->item =
3137             (str ? atoi(str) : 1);
3138     }
3139
3140     str = ZOOM_options_get(p->options, "doc");
3141     if (str)
3142     {
3143         req->u.esRequest->notToKeep->itemRequest =
3144             z_ext_record_xml(p->odr_out, str, strlen(str));
3145     }
3146     else
3147         req->u.esRequest->notToKeep->itemRequest = encode_ill_request(p);
3148
3149     return req;
3150 }
3151
3152 Z_APDU *create_admin_package(ZOOM_package p, int type,
3153                              Z_ESAdminOriginPartToKeep **toKeepP,
3154                              Z_ESAdminOriginPartNotToKeep **notToKeepP)
3155 {
3156     Z_APDU *apdu = create_es_package(p, yaz_oid_extserv_admin);
3157     if (apdu)
3158     {
3159         Z_ESAdminOriginPartToKeep  *toKeep;
3160         Z_ESAdminOriginPartNotToKeep  *notToKeep;
3161         Z_External *r = (Z_External *) odr_malloc(p->odr_out, sizeof(*r));
3162         const char *first_db = "Default";
3163         int num_db;
3164         char **db = set_DatabaseNames(p->connection, p->options, &num_db,
3165                                       p->odr_out);
3166         if (num_db > 0)
3167             first_db = db[0];
3168
3169         r->direct_reference = odr_oiddup(p->odr_out, yaz_oid_extserv_admin);
3170         r->descriptor = 0;
3171         r->indirect_reference = 0;
3172         r->which = Z_External_ESAdmin;
3173
3174         r->u.adminService = (Z_Admin *)
3175             odr_malloc(p->odr_out, sizeof(*r->u.adminService));
3176         r->u.adminService->which = Z_Admin_esRequest;
3177         r->u.adminService->u.esRequest = (Z_AdminEsRequest *)
3178             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest));
3179
3180         toKeep = r->u.adminService->u.esRequest->toKeep =
3181             (Z_ESAdminOriginPartToKeep *)
3182             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest->toKeep));
3183         toKeep->which = type;
3184         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
3185         toKeep->u.create = odr_nullval();
3186         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3187
3188         r->u.adminService->u.esRequest->notToKeep = notToKeep =
3189             (Z_ESAdminOriginPartNotToKeep *)
3190             odr_malloc(p->odr_out,
3191                        sizeof(*r->u.adminService->u.esRequest->notToKeep));
3192         notToKeep->which = Z_ESAdminOriginPartNotToKeep_recordsWillFollow;
3193         notToKeep->u.recordsWillFollow = odr_nullval();
3194         if (toKeepP)
3195             *toKeepP = toKeep;
3196         if (notToKeepP)
3197             *notToKeepP = notToKeep;
3198     }
3199     return apdu;
3200 }
3201
3202 static Z_APDU *create_xmlupdate_package(ZOOM_package p)
3203 {
3204     Z_APDU *apdu = create_es_package(p, yaz_oid_extserv_xml_es);
3205     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
3206     Z_External *ext = (Z_External *) odr_malloc(p->odr_out, sizeof(*ext));
3207     const char *doc = ZOOM_options_get(p->options, "doc");
3208
3209     if (!doc)
3210         doc = "";
3211
3212     req->taskSpecificParameters = ext;
3213     ext->direct_reference = req->packageType;
3214     ext->descriptor = 0;
3215     ext->indirect_reference = 0;
3216
3217     ext->which = Z_External_octet;
3218     ext->u.single_ASN1_type =
3219         odr_create_Odr_oct(p->odr_out, (const unsigned char *) doc,
3220                            strlen(doc));
3221     return apdu;
3222 }
3223
3224 static Z_APDU *create_update_package(ZOOM_package p)
3225 {
3226     Z_APDU *apdu = 0;
3227     const char *first_db = "Default";
3228     int num_db;
3229     char **db = set_DatabaseNames(p->connection, p->options, &num_db, p->odr_out);
3230     const char *action = ZOOM_options_get(p->options, "action");
3231     const char *recordIdOpaque = ZOOM_options_get(p->options, "recordIdOpaque");
3232     const char *recordIdNumber = ZOOM_options_get(p->options, "recordIdNumber");
3233     const char *record_buf = ZOOM_options_get(p->options, "record");
3234     const char *syntax_str = ZOOM_options_get(p->options, "syntax");
3235     const char *version = ZOOM_options_get(p->options, "updateVersion");
3236
3237     const char *correlationInfo_note =
3238         ZOOM_options_get(p->options, "correlationInfo.note");
3239     const char *correlationInfo_id =
3240         ZOOM_options_get(p->options, "correlationInfo.id");
3241     int action_no = -1;
3242     Odr_oid *syntax_oid = 0;
3243     const Odr_oid *package_oid = yaz_oid_extserv_database_update;
3244
3245     if (!version)
3246         version = "3";
3247     if (!syntax_str)
3248         syntax_str = "xml";
3249     if (!record_buf)
3250     {
3251         record_buf = "void";
3252         syntax_str = "SUTRS";
3253     }
3254
3255     if (syntax_str)
3256     {
3257         syntax_oid = yaz_string_to_oid_odr(yaz_oid_std(),
3258                                            CLASS_RECSYN, syntax_str,
3259                                            p->odr_out);
3260     }
3261     if (!syntax_oid)
3262         return 0;
3263
3264     if (num_db > 0)
3265         first_db = db[0];
3266
3267     switch(*version)
3268     {
3269     case '1':
3270         package_oid = yaz_oid_extserv_database_update_first_version;
3271         /* old update does not support specialUpdate */
3272         if (!action)
3273             action = "recordInsert";
3274         break;
3275     case '2':
3276         if (!action)
3277             action = "specialUpdate";
3278         package_oid = yaz_oid_extserv_database_update_second_version;
3279         break;
3280     case '3':
3281         if (!action)
3282             action = "specialUpdate";
3283         package_oid = yaz_oid_extserv_database_update;
3284         break;
3285     default:
3286         return 0;
3287     }
3288
3289     if (!strcmp(action, "recordInsert"))
3290         action_no = Z_IUOriginPartToKeep_recordInsert;
3291     else if (!strcmp(action, "recordReplace"))
3292         action_no = Z_IUOriginPartToKeep_recordReplace;
3293     else if (!strcmp(action, "recordDelete"))
3294         action_no = Z_IUOriginPartToKeep_recordDelete;
3295     else if (!strcmp(action, "elementUpdate"))
3296         action_no = Z_IUOriginPartToKeep_elementUpdate;
3297     else if (!strcmp(action, "specialUpdate"))
3298         action_no = Z_IUOriginPartToKeep_specialUpdate;
3299     else
3300         return 0;
3301
3302     apdu = create_es_package(p, package_oid);
3303     if (apdu)
3304     {
3305         Z_IUOriginPartToKeep *toKeep;
3306         Z_IUSuppliedRecords *notToKeep;
3307         Z_External *r = (Z_External *)
3308             odr_malloc(p->odr_out, sizeof(*r));
3309         const char *elementSetName =
3310             ZOOM_options_get(p->options, "elementSetName");
3311
3312         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3313
3314         r->direct_reference = odr_oiddup(p->odr_out, package_oid);
3315         r->descriptor = 0;
3316         r->which = Z_External_update;
3317         r->indirect_reference = 0;
3318         r->u.update = (Z_IUUpdate *)
3319             odr_malloc(p->odr_out, sizeof(*r->u.update));
3320
3321         r->u.update->which = Z_IUUpdate_esRequest;
3322         r->u.update->u.esRequest = (Z_IUUpdateEsRequest *)
3323             odr_malloc(p->odr_out, sizeof(*r->u.update->u.esRequest));
3324         toKeep = r->u.update->u.esRequest->toKeep =
3325             (Z_IUOriginPartToKeep *)
3326             odr_malloc(p->odr_out, sizeof(*toKeep));
3327
3328         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
3329         toKeep->schema = 0;
3330
3331         toKeep->elementSetName = 0;
3332         if (elementSetName)
3333             toKeep->elementSetName = odr_strdup(p->odr_out, elementSetName);
3334
3335         toKeep->actionQualifier = 0;
3336         toKeep->action = odr_intdup(p->odr_out, action_no);
3337
3338         notToKeep = r->u.update->u.esRequest->notToKeep =
3339             (Z_IUSuppliedRecords *)
3340             odr_malloc(p->odr_out, sizeof(*notToKeep));
3341         notToKeep->num = 1;
3342         notToKeep->elements = (Z_IUSuppliedRecords_elem **)
3343             odr_malloc(p->odr_out, sizeof(*notToKeep->elements));
3344         notToKeep->elements[0] = (Z_IUSuppliedRecords_elem *)
3345             odr_malloc(p->odr_out, sizeof(**notToKeep->elements));
3346         notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_opaque;
3347         if (recordIdOpaque)
3348         {
3349             notToKeep->elements[0]->u.opaque =
3350                 odr_create_Odr_oct(p->odr_out,
3351                                    (const unsigned char *) recordIdOpaque,
3352                                    strlen(recordIdOpaque));
3353         }
3354         else if (recordIdNumber)
3355         {
3356             notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_number;
3357
3358             notToKeep->elements[0]->u.number =
3359                 odr_intdup(p->odr_out, atoi(recordIdNumber));
3360         }
3361         else
3362             notToKeep->elements[0]->u.opaque = 0;
3363         notToKeep->elements[0]->supplementalId = 0;
3364         if (correlationInfo_note || correlationInfo_id)
3365         {
3366             Z_IUCorrelationInfo *ci;
3367             ci = notToKeep->elements[0]->correlationInfo =
3368                 odr_malloc(p->odr_out, sizeof(*ci));
3369             ci->note = correlationInfo_note ?
3370                 odr_strdup(p->odr_out, correlationInfo_note) : 0;
3371             ci->id = correlationInfo_id ?
3372                 odr_intdup(p->odr_out, atoi(correlationInfo_id)) : 0;
3373         }
3374         else
3375             notToKeep->elements[0]->correlationInfo = 0;
3376         notToKeep->elements[0]->record =
3377             z_ext_record_oid(p->odr_out, syntax_oid,
3378                              record_buf, strlen(record_buf));
3379     }
3380     if (0 && apdu)
3381     {
3382         ODR print = odr_createmem(ODR_PRINT);
3383
3384         z_APDU(print, &apdu, 0, 0);
3385         odr_destroy(print);
3386     }
3387     return apdu;
3388 }
3389
3390 ZOOM_API(void)
3391     ZOOM_package_send(ZOOM_package p, const char *type)
3392 {
3393     Z_APDU *apdu = 0;
3394     ZOOM_connection c;
3395     if (!p)
3396         return;
3397     c = p->connection;
3398     odr_reset(p->odr_out);
3399     xfree(p->buf_out);
3400     p->buf_out = 0;
3401     if (!strcmp(type, "itemorder"))
3402     {
3403         apdu = create_es_package(p, yaz_oid_extserv_item_order);
3404         if (apdu)
3405         {
3406             Z_External *r = (Z_External *) odr_malloc(p->odr_out, sizeof(*r));
3407
3408             r->direct_reference =
3409                 odr_oiddup(p->odr_out, yaz_oid_extserv_item_order);
3410             r->descriptor = 0;
3411             r->which = Z_External_itemOrder;
3412             r->indirect_reference = 0;
3413             r->u.itemOrder = encode_item_order(p);
3414
3415             apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3416         }
3417     }
3418     else if (!strcmp(type, "create"))  /* create database */
3419     {
3420         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_create,
3421                                     0, 0);
3422     }
3423     else if (!strcmp(type, "drop"))  /* drop database */
3424     {
3425         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_drop,
3426                                     0, 0);
3427     }
3428     else if (!strcmp(type, "commit"))  /* commit changes */
3429     {
3430         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_commit,
3431                                     0, 0);
3432     }
3433     else if (!strcmp(type, "update")) /* update record(s) */
3434     {
3435         apdu = create_update_package(p);
3436     }
3437     else if (!strcmp(type, "xmlupdate"))
3438     {
3439         apdu = create_xmlupdate_package(p);
3440     }
3441     if (apdu)
3442     {
3443         if (encode_APDU(p->connection, apdu, p->odr_out) == 0)
3444         {
3445             char *buf;
3446
3447             ZOOM_task task = ZOOM_connection_add_task(c, ZOOM_TASK_PACKAGE);
3448             task->u.package = p;
3449             buf = odr_getbuf(p->odr_out, &p->len_out, 0);
3450             p->buf_out = (char *) xmalloc(p->len_out);
3451             memcpy(p->buf_out, buf, p->len_out);
3452
3453             (p->refcount)++;
3454             if (!c->async)
3455             {
3456                 while (ZOOM_event(1, &c))
3457                     ;
3458             }
3459         }
3460     }
3461 }
3462
3463 ZOOM_API(ZOOM_package)
3464     ZOOM_connection_package(ZOOM_connection c, ZOOM_options options)
3465 {
3466     ZOOM_package p = (ZOOM_package) xmalloc(sizeof(*p));
3467
3468     p->connection = c;
3469     p->odr_out = odr_createmem(ODR_ENCODE);
3470     p->options = ZOOM_options_create_with_parent2(options, c->options);
3471     p->refcount = 1;
3472     p->buf_out = 0;
3473     p->len_out = 0;
3474     return p;
3475 }
3476
3477 ZOOM_API(void)
3478     ZOOM_package_destroy(ZOOM_package p)
3479 {
3480     if (!p)
3481         return;
3482     (p->refcount)--;
3483     if (p->refcount == 0)
3484     {
3485         odr_destroy(p->odr_out);
3486         xfree(p->buf_out);
3487
3488         ZOOM_options_destroy(p->options);
3489         xfree(p);
3490     }
3491 }
3492
3493 ZOOM_API(const char *)
3494     ZOOM_package_option_get(ZOOM_package p, const char *key)
3495 {
3496     return ZOOM_options_get(p->options, key);
3497 }
3498
3499
3500 ZOOM_API(void)
3501     ZOOM_package_option_set(ZOOM_package p, const char *key,
3502                             const char *val)
3503 {
3504     ZOOM_options_set(p->options, key, val);
3505 }
3506
3507 static int ZOOM_connection_exec_task(ZOOM_connection c)
3508 {
3509     ZOOM_task task = c->tasks;
3510     zoom_ret ret = zoom_complete;
3511
3512     if (!task)
3513         return 0;
3514     yaz_log(log_details, "%p ZOOM_connection_exec_task type=%d run=%d",
3515             c, task->which, task->running);
3516     if (c->error != ZOOM_ERROR_NONE)
3517     {
3518         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3519                 "removing tasks because of error = %d", c, c->error);
3520         ZOOM_connection_remove_tasks(c);
3521         return 0;
3522     }
3523     if (task->running)
3524     {
3525         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3526                 "task already running", c);
3527         return 0;
3528     }
3529     task->running = 1;
3530     ret = zoom_complete;
3531     if (c->cs || task->which == ZOOM_TASK_CONNECT)
3532     {
3533         switch (task->which)
3534         {
3535         case ZOOM_TASK_SEARCH:
3536             if (c->proto == PROTO_HTTP)
3537                 ret = ZOOM_connection_srw_send_search(c);
3538             else
3539                 ret = ZOOM_connection_send_search(c);
3540             break;
3541         case ZOOM_TASK_RETRIEVE:
3542             if (c->proto == PROTO_HTTP)
3543                 ret = ZOOM_connection_srw_send_search(c);
3544             else
3545                 ret = send_present(c);
3546             break;
3547         case ZOOM_TASK_CONNECT:
3548             ret = do_connect(c);
3549             break;
3550         case ZOOM_TASK_SCAN:
3551             if (c->proto == PROTO_HTTP)
3552                 ret = ZOOM_connection_srw_send_scan(c);
3553             else
3554                 ret = ZOOM_connection_send_scan(c);
3555             break;
3556         case ZOOM_TASK_PACKAGE:
3557             ret = send_package(c);
3558             break;
3559         case ZOOM_TASK_SORT:
3560             c->tasks->u.sort.resultset->r_sort_spec =
3561                 c->tasks->u.sort.q->sort_spec;
3562             ret = send_sort(c, c->tasks->u.sort.resultset);
3563             break;
3564         }
3565     }
3566     else
3567     {
3568         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3569                 "remove tasks because no connection exist", c);
3570         ZOOM_connection_remove_tasks(c);
3571     }
3572     if (ret == zoom_complete)
3573     {
3574         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3575                 "task removed (complete)", c);
3576         ZOOM_connection_remove_task(c);
3577         return 0;
3578     }
3579     yaz_log(log_details, "%p ZOOM_connection_exec_task "
3580             "task pending", c);
3581     return 1;
3582 }
3583
3584 static zoom_ret send_sort_present(ZOOM_connection c)
3585 {
3586     zoom_ret r = zoom_complete;
3587
3588     if (c->tasks && c->tasks->which == ZOOM_TASK_SEARCH)
3589         r = send_sort(c, c->tasks->u.search.resultset);
3590     if (r == zoom_complete)
3591         r = send_present(c);
3592     return r;
3593 }
3594
3595 static int es_response(ZOOM_connection c,
3596                        Z_ExtendedServicesResponse *res)
3597 {
3598     if (!c->tasks || c->tasks->which != ZOOM_TASK_PACKAGE)
3599         return 0;
3600     if (res->diagnostics && res->num_diagnostics > 0)
3601         response_diag(c, res->diagnostics[0]);
3602     if (res->taskPackage &&
3603         res->taskPackage->which == Z_External_extendedService)
3604     {
3605         Z_TaskPackage *taskPackage = res->taskPackage->u.extendedService;
3606         Odr_oct *id = taskPackage->targetReference;
3607
3608         if (id)
3609             ZOOM_options_setl(c->tasks->u.package->options,
3610                               "targetReference", (char*) id->buf, id->len);
3611     }
3612     if (res->taskPackage &&
3613         res->taskPackage->which == Z_External_octet)
3614     {
3615         Odr_oct *doc = res->taskPackage->u.octet_aligned;
3616         ZOOM_options_setl(c->tasks->u.package->options,
3617                           "xmlUpdateDoc", (char*) doc->buf, doc->len);
3618     }
3619     return 1;
3620 }
3621
3622 static void interpret_init_diag(ZOOM_connection c,
3623                                 Z_DiagnosticFormat *diag)
3624 {
3625     if (diag->num > 0)
3626     {
3627         Z_DiagnosticFormat_s *ds = diag->elements[0];
3628         if (ds->which == Z_DiagnosticFormat_s_defaultDiagRec)
3629             response_default_diag(c, ds->u.defaultDiagRec);
3630     }
3631 }
3632
3633
3634 static void interpret_otherinformation_field(ZOOM_connection c,
3635                                              Z_OtherInformation *ui)
3636 {
3637     int i;
3638     for (i = 0; i < ui->num_elements; i++)
3639     {
3640         Z_OtherInformationUnit *unit = ui->list[i];
3641         if (unit->which == Z_OtherInfo_externallyDefinedInfo &&
3642             unit->information.externallyDefinedInfo &&
3643             unit->information.externallyDefinedInfo->which ==
3644             Z_External_diag1)
3645         {
3646             interpret_init_diag(c, unit->information.externallyDefinedInfo->u.diag1);
3647         }
3648     }
3649 }
3650
3651
3652 static void set_init_option(const char *name, void *clientData) {
3653     ZOOM_connection c = (ZOOM_connection) clientData;
3654     char buf[80];
3655
3656     sprintf(buf, "init_opt_%.70s", name);
3657     ZOOM_connection_option_set(c, buf, "1");
3658 }
3659
3660
3661 static void recv_apdu(ZOOM_connection c, Z_APDU *apdu)
3662 {
3663     Z_InitResponse *initrs;
3664
3665     ZOOM_connection_set_mask(c, 0);
3666     yaz_log(log_details, "%p recv_apdu apdu->which=%d", c, apdu->which);
3667     switch(apdu->which)
3668     {
3669     case Z_APDU_initResponse:
3670         yaz_log(log_api, "%p recv_apdu: Received Init response", c);
3671         initrs = apdu->u.initResponse;
3672         ZOOM_connection_option_set(c, "serverImplementationId",
3673                                    initrs->implementationId ?
3674                                    initrs->implementationId : "");
3675         ZOOM_connection_option_set(c, "serverImplementationName",
3676                                    initrs->implementationName ?
3677                                    initrs->implementationName : "");
3678         ZOOM_connection_option_set(c, "serverImplementationVersion",
3679                                    initrs->implementationVersion ?
3680                                    initrs->implementationVersion : "");
3681         /* Set the three old options too, for old applications */
3682         ZOOM_connection_option_set(c, "targetImplementationId",
3683                                    initrs->implementationId ?
3684                                    initrs->implementationId : "");
3685         ZOOM_connection_option_set(c, "targetImplementationName",
3686                                    initrs->implementationName ?
3687                                    initrs->implementationName : "");
3688         ZOOM_connection_option_set(c, "targetImplementationVersion",
3689                                    initrs->implementationVersion ?
3690                                    initrs->implementationVersion : "");
3691
3692         /* Make initrs->options available as ZOOM-level options */
3693         yaz_init_opt_decode(initrs->options, set_init_option, (void*) c);
3694
3695         if (!*initrs->result)
3696         {
3697             Z_External *uif = initrs->userInformationField;
3698
3699             set_ZOOM_error(c, ZOOM_ERROR_INIT, 0); /* default error */
3700
3701             if (uif && uif->which == Z_External_userInfo1)
3702                 interpret_otherinformation_field(c, uif->u.userInfo1);
3703         }
3704         else
3705         {
3706             char *cookie =
3707                 yaz_oi_get_string_oid(&apdu->u.initResponse->otherInfo,
3708                                       yaz_oid_userinfo_cookie, 1, 0);
3709             xfree(c->cookie_in);
3710             c->cookie_in = 0;
3711             if (cookie)
3712                 c->cookie_in = xstrdup(cookie);
3713             if (ODR_MASK_GET(initrs->options, Z_Options_namedResultSets) &&
3714                 ODR_MASK_GET(initrs->protocolVersion, Z_ProtocolVersion_3))
3715                 c->support_named_resultsets = 1;
3716             if (c->tasks)
3717             {
3718                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
3719                 ZOOM_connection_remove_task(c);
3720             }
3721             ZOOM_connection_exec_task(c);
3722         }
3723         if (ODR_MASK_GET(initrs->options, Z_Options_negotiationModel))
3724         {
3725             NMEM tmpmem = nmem_create();
3726             Z_CharSetandLanguageNegotiation *p =
3727                 yaz_get_charneg_record(initrs->otherInfo);
3728
3729             if (p)
3730             {
3731                 char *charset = NULL, *lang = NULL;
3732                 int sel;
3733
3734                 yaz_get_response_charneg(tmpmem, p, &charset, &lang, &sel);
3735                 yaz_log(log_details, "%p recv_apdu target accepted: "
3736                         "charset %s, language %s, select %d",
3737                         c,
3738                         charset ? charset : "none", lang ? lang : "none", sel);
3739                 if (charset)
3740                     ZOOM_connection_option_set(c, "negotiation-charset",
3741                                                charset);
3742                 if (lang)
3743                     ZOOM_connection_option_set(c, "negotiation-lang",
3744                                                lang);
3745
3746                 ZOOM_connection_option_set(
3747                     c,  "negotiation-charset-in-effect-for-records",
3748                     (sel != 0) ? "1" : "0");
3749                 nmem_destroy(tmpmem);
3750             }
3751         }
3752         break;
3753     case Z_APDU_searchResponse:
3754         yaz_log(log_api, "%p recv_apdu Search response", c);
3755         handle_search_response(c, apdu->u.searchResponse);
3756         if (send_sort_present(c) == zoom_complete)
3757             ZOOM_connection_remove_task(c);
3758         break;
3759     case Z_APDU_presentResponse:
3760         yaz_log(log_api, "%p recv_apdu Present response", c);
3761         handle_present_response(c, apdu->u.presentResponse);
3762         if (send_present(c) == zoom_complete)
3763             ZOOM_connection_remove_task(c);
3764         break;
3765     case Z_APDU_sortResponse:
3766         yaz_log(log_api, "%p recv_apdu Sort response", c);
3767         sort_response(c, apdu->u.sortResponse);
3768         if (send_present(c) == zoom_complete)
3769             ZOOM_connection_remove_task(c);
3770         break;
3771     case Z_APDU_scanResponse:
3772         yaz_log(log_api, "%p recv_apdu Scan response", c);
3773         scan_response(c, apdu->u.scanResponse);
3774         ZOOM_connection_remove_task(c);
3775         break;
3776     case Z_APDU_extendedServicesResponse:
3777         yaz_log(log_api, "%p recv_apdu Extended Services response", c);
3778         es_response(c, apdu->u.extendedServicesResponse);
3779         ZOOM_connection_remove_task(c);
3780         break;
3781     case Z_APDU_close:
3782         yaz_log(log_api, "%p recv_apdu Close PDU", c);
3783         if (!ZOOM_test_reconnect(c))
3784         {
3785             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3786             do_close(c);
3787         }
3788         break;
3789     default:
3790         yaz_log(log_api, "%p Received unknown PDU", c);
3791         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3792         do_close(c);
3793     }
3794 }
3795
3796 #if YAZ_HAVE_XML2
3797 static void handle_srw_response(ZOOM_connection c,
3798                                 Z_SRW_searchRetrieveResponse *res)
3799 {
3800     ZOOM_resultset resultset = 0;
3801     int i;
3802     NMEM nmem;
3803     ZOOM_Event event;
3804     int *start;
3805     const char *syntax, *elementSetName;
3806
3807     if (!c->tasks)
3808         return;
3809
3810     switch(c->tasks->which)
3811     {
3812     case ZOOM_TASK_SEARCH:
3813         resultset = c->tasks->u.search.resultset;
3814         start = &c->tasks->u.search.start;
3815         syntax = c->tasks->u.search.syntax;
3816         elementSetName = c->tasks->u.search.elementSetName;
3817         break;
3818     case ZOOM_TASK_RETRIEVE:
3819         resultset = c->tasks->u.retrieve.resultset;
3820         start = &c->tasks->u.retrieve.start;
3821         syntax = c->tasks->u.retrieve.syntax;
3822         elementSetName = c->tasks->u.retrieve.elementSetName;
3823         break;
3824     default:
3825         return;
3826     }
3827     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
3828     ZOOM_connection_put_event(c, event);
3829
3830     resultset->size = 0;
3831
3832     if (res->resultSetId)
3833         ZOOM_resultset_option_set(resultset, "resultSetId", res->resultSetId);
3834
3835     yaz_log(log_details, "%p handle_srw_response got SRW response OK", c);
3836
3837     if (res->numberOfRecords)
3838         resultset->size = *res->numberOfRecords;
3839
3840     for (i = 0; i<res->num_records; i++)
3841     {
3842         int pos;
3843
3844         Z_NamePlusRecord *npr = (Z_NamePlusRecord *)
3845             odr_malloc(c->odr_in, sizeof(Z_NamePlusRecord));
3846
3847         if (res->records[i].recordPosition &&
3848             *res->records[i].recordPosition > 0)
3849             pos = *res->records[i].recordPosition - 1;
3850         else
3851             pos = *start + i;
3852
3853         npr->databaseName = 0;
3854         npr->which = Z_NamePlusRecord_databaseRecord;
3855         npr->u.databaseRecord = (Z_External *)
3856             odr_malloc(c->odr_in, sizeof(Z_External));
3857         npr->u.databaseRecord->descriptor = 0;
3858         npr->u.databaseRecord->direct_reference =
3859             odr_oiddup(c->odr_in, yaz_oid_recsyn_xml);
3860         npr->u.databaseRecord->which = Z_External_octet;
3861
3862         npr->u.databaseRecord->u.octet_aligned = (Odr_oct *)
3863             odr_malloc(c->odr_in, sizeof(Odr_oct));
3864         npr->u.databaseRecord->u.octet_aligned->buf = (unsigned char*)
3865             res->records[i].recordData_buf;
3866         npr->u.databaseRecord->u.octet_aligned->len =
3867             npr->u.databaseRecord->u.octet_aligned->size =
3868             res->records[i].recordData_len;
3869         record_cache_add(resultset, npr, pos, syntax, elementSetName);
3870     }
3871     if (res->num_diagnostics > 0)
3872         set_SRU_error(c, &res->diagnostics[0]);
3873     nmem = odr_extract_mem(c->odr_in);
3874     nmem_transfer(odr_getmem(resultset->odr), nmem);
3875     nmem_destroy(nmem);
3876 }
3877 #endif
3878
3879 #if YAZ_HAVE_XML2
3880 static void handle_srw_scan_response(ZOOM_connection c,
3881                                      Z_SRW_scanResponse *res)
3882 {
3883     NMEM nmem = odr_extract_mem(c->odr_in);
3884     ZOOM_scanset scan;
3885
3886     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
3887         return;
3888     scan = c->tasks->u.scan.scan;
3889
3890     if (res->num_diagnostics > 0)
3891         set_SRU_error(c, &res->diagnostics[0]);
3892
3893     scan->scan_response = 0;
3894     scan->srw_scan_response = res;
3895     nmem_transfer(odr_getmem(scan->odr), nmem);
3896
3897     ZOOM_options_set_int(scan->options, "number", res->num_terms);
3898     nmem_destroy(nmem);
3899 }
3900 #endif
3901
3902 #if YAZ_HAVE_XML2
3903 static void handle_http(ZOOM_connection c, Z_HTTP_Response *hres)
3904 {
3905     int ret = -1;
3906     const char *addinfo = 0;
3907     const char *connection_head = z_HTTP_header_lookup(hres->headers,
3908                                                        "Connection");
3909     ZOOM_connection_set_mask(c, 0);
3910     yaz_log(log_details, "%p handle_http", c);
3911
3912     if (!yaz_srw_check_content_type(hres))
3913         addinfo = "content-type";
3914     else
3915     {
3916         Z_SOAP *soap_package = 0;
3917         ODR o = c->odr_in;
3918         Z_SOAP_Handler soap_handlers[2] = {
3919             {YAZ_XMLNS_SRU_v1_1, 0, (Z_SOAP_fun) yaz_srw_codec},
3920             {0, 0, 0}
3921         };
3922         ret = z_soap_codec(o, &soap_package,
3923                            &hres->content_buf, &hres->content_len,
3924                            soap_handlers);
3925         if (!ret && soap_package->which == Z_SOAP_generic &&
3926             soap_package->u.generic->no == 0)
3927         {
3928             Z_SRW_PDU *sr = (Z_SRW_PDU*) soap_package->u.generic->p;
3929
3930             ZOOM_options_set(c->options, "sru_version", sr->srw_version);
3931             if (sr->which == Z_SRW_searchRetrieve_response)
3932                 handle_srw_response(c, sr->u.response);
3933             else if (sr->which == Z_SRW_scan_response)
3934                 handle_srw_scan_response(c, sr->u.scan_response);
3935             else
3936                 ret = -1;
3937         }
3938         else if (!ret && (soap_package->which == Z_SOAP_fault
3939                           || soap_package->which == Z_SOAP_error))
3940         {
3941             set_HTTP_error(c, hres->code,
3942                            soap_package->u.fault->fault_code,
3943                            soap_package->u.fault->fault_string);
3944         }
3945         else
3946             ret = -1;
3947     }
3948     if (ret)
3949     {
3950         if (hres->code != 200)
3951             set_HTTP_error(c, hres->code, 0, 0);
3952         else
3953             set_ZOOM_error(c, ZOOM_ERROR_DECODE, addinfo);
3954         do_close(c);
3955     }
3956     ZOOM_connection_remove_task(c);
3957     if (!strcmp(hres->version, "1.0"))
3958     {
3959         /* HTTP 1.0: only if Keep-Alive we stay alive.. */
3960         if (!connection_head || strcmp(connection_head, "Keep-Alive"))
3961             do_close(c);
3962     }
3963     else
3964     {
3965         /* HTTP 1.1: only if no close we stay alive .. */
3966         if (connection_head && !strcmp(connection_head, "close"))
3967             do_close(c);
3968     }
3969 }
3970 #endif
3971
3972 static int do_read(ZOOM_connection c)
3973 {
3974     int r, more;
3975     ZOOM_Event event;
3976
3977     event = ZOOM_Event_create(ZOOM_EVENT_RECV_DATA);
3978     ZOOM_connection_put_event(c, event);
3979
3980     r = cs_get(c->cs, &c->buf_in, &c->len_in);
3981     more = cs_more(c->cs);
3982     yaz_log(log_details, "%p do_read len=%d more=%d", c, r, more);
3983     if (r == 1)
3984         return 0;
3985     if (r <= 0)
3986     {
3987         if (!ZOOM_test_reconnect(c))
3988         {
3989             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3990             do_close(c);
3991         }
3992     }
3993     else
3994     {
3995         Z_GDU *gdu;
3996         ZOOM_Event event;
3997
3998         odr_reset(c->odr_in);
3999         odr_setbuf(c->odr_in, c->buf_in, r, 0);
4000         event = ZOOM_Event_create(ZOOM_EVENT_RECV_APDU);
4001         ZOOM_connection_put_event(c, event);
4002
4003         if (!z_GDU(c->odr_in, &gdu, 0, 0))
4004         {
4005             int x;
4006             int err = odr_geterrorx(c->odr_in, &x);
4007             char msg[100];
4008             const char *element = odr_getelement(c->odr_in);
4009             yaz_snprintf(msg, sizeof(msg),
4010                     "ODR code %d:%d element=%s offset=%d",
4011                     err, x, element ? element : "<unknown>",
4012                     odr_offset(c->odr_in));
4013             set_ZOOM_error(c, ZOOM_ERROR_DECODE, msg);
4014             if (log_api)
4015             {
4016                 FILE *ber_file = yaz_log_file();
4017                 if (ber_file)
4018                     odr_dumpBER(ber_file, c->buf_in, r);
4019             }
4020             do_close(c);
4021         }
4022         else if (gdu->which == Z_GDU_Z3950)
4023             recv_apdu(c, gdu->u.z3950);
4024         else if (gdu->which == Z_GDU_HTTP_Response)
4025         {
4026 #if YAZ_HAVE_XML2
4027             handle_http(c, gdu->u.HTTP_Response);
4028 #else
4029             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
4030             do_close(c);
4031 #endif
4032         }
4033         c->reconnect_ok = 0;
4034     }
4035     return 1;
4036 }
4037
4038 static zoom_ret do_write_ex(ZOOM_connection c, char *buf_out, int len_out)
4039 {
4040     int r;
4041     ZOOM_Event event;
4042
4043     event = ZOOM_Event_create(ZOOM_EVENT_SEND_DATA);
4044     ZOOM_connection_put_event(c, event);
4045
4046     yaz_log(log_details, "%p do_write_ex len=%d", c, len_out);
4047     if ((r = cs_put(c->cs, buf_out, len_out)) < 0)
4048     {
4049         yaz_log(log_details, "%p do_write_ex write failed", c);
4050         if (ZOOM_test_reconnect(c))
4051         {
4052             return zoom_pending;
4053         }
4054         if (c->state == STATE_CONNECTING)
4055             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
4056         else
4057             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
4058         do_close(c);
4059         return zoom_complete;
4060     }
4061     else if (r == 1)
4062     {
4063         int mask = ZOOM_SELECT_EXCEPT;
4064         if (c->cs->io_pending & CS_WANT_WRITE)
4065             mask += ZOOM_SELECT_WRITE;
4066         if (c->cs->io_pending & CS_WANT_READ)
4067             mask += ZOOM_SELECT_READ;
4068         ZOOM_connection_set_mask(c, mask);
4069         yaz_log(log_details, "%p do_write_ex write incomplete mask=%d",
4070                 c, c->mask);
4071     }
4072     else
4073     {
4074         ZOOM_connection_set_mask(c, ZOOM_SELECT_READ|ZOOM_SELECT_EXCEPT);
4075         yaz_log(log_details, "%p do_write_ex write complete mask=%d",
4076                 c, c->mask);
4077     }
4078     return zoom_pending;
4079 }
4080
4081 static zoom_ret do_write(ZOOM_connection c)
4082 {
4083     return do_write_ex(c, c->buf_out, c->len_out);
4084 }
4085
4086
4087 ZOOM_API(const char *)
4088     ZOOM_connection_option_get(ZOOM_connection c, const char *key)
4089 {
4090     return ZOOM_options_get(c->options, key);
4091 }
4092
4093 ZOOM_API(const char *)
4094     ZOOM_connection_option_getl(ZOOM_connection c, const char *key, int *lenp)
4095 {
4096     return ZOOM_options_getl(c->options, key, lenp);
4097 }
4098
4099 ZOOM_API(void)
4100     ZOOM_connection_option_set(ZOOM_connection c, const char *key,
4101                                const char *val)
4102 {
4103     ZOOM_options_set(c->options, key, val);
4104 }
4105
4106 ZOOM_API(void)
4107     ZOOM_connection_option_setl(ZOOM_connection c, const char *key,
4108                                 const char *val, int len)
4109 {
4110     ZOOM_options_setl(c->options, key, val, len);
4111 }
4112
4113 ZOOM_API(const char *)
4114     ZOOM_resultset_option_get(ZOOM_resultset r, const char *key)
4115 {
4116     return ZOOM_options_get(r->options, key);
4117 }
4118
4119 ZOOM_API(void)
4120     ZOOM_resultset_option_set(ZOOM_resultset r, const char *key,
4121                               const char *val)
4122 {
4123     ZOOM_options_set(r->options, key, val);
4124 }
4125
4126
4127 ZOOM_API(int)
4128     ZOOM_connection_errcode(ZOOM_connection c)
4129 {
4130     return ZOOM_connection_error(c, 0, 0);
4131 }
4132
4133 ZOOM_API(const char *)
4134     ZOOM_connection_errmsg(ZOOM_connection c)
4135 {
4136     const char *msg;
4137     ZOOM_connection_error(c, &msg, 0);
4138     return msg;
4139 }
4140
4141 ZOOM_API(const char *)
4142     ZOOM_connection_addinfo(ZOOM_connection c)
4143 {
4144     const char *addinfo;
4145     ZOOM_connection_error(c, 0, &addinfo);
4146     return addinfo;
4147 }
4148
4149 ZOOM_API(const char *)
4150     ZOOM_connection_diagset(ZOOM_connection c)
4151 {
4152     const char *diagset;
4153     ZOOM_connection_error_x(c, 0, 0, &diagset);
4154     return diagset;
4155 }
4156
4157 ZOOM_API(const char *)
4158     ZOOM_diag_str(int error)
4159 {
4160     switch (error)
4161     {
4162     case ZOOM_ERROR_NONE:
4163         return "No error";
4164     case ZOOM_ERROR_CONNECT:
4165         return "Connect failed";
4166     case ZOOM_ERROR_MEMORY:
4167         return "Out of memory";
4168     case ZOOM_ERROR_ENCODE:
4169         return "Encoding failed";
4170     case ZOOM_ERROR_DECODE:
4171         return "Decoding failed";
4172     case ZOOM_ERROR_CONNECTION_LOST:
4173         return "Connection lost";
4174     case ZOOM_ERROR_INIT:
4175         return "Init rejected";
4176     case ZOOM_ERROR_INTERNAL:
4177         return "Internal failure";
4178     case ZOOM_ERROR_TIMEOUT:
4179         return "Timeout";
4180     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
4181         return "Unsupported protocol";
4182     case ZOOM_ERROR_UNSUPPORTED_QUERY:
4183         return "Unsupported query type";
4184     case ZOOM_ERROR_INVALID_QUERY:
4185         return "Invalid query";
4186     case ZOOM_ERROR_CQL_PARSE:
4187         return "CQL parsing error";
4188     case ZOOM_ERROR_CQL_TRANSFORM:
4189         return "CQL transformation error";
4190     case ZOOM_ERROR_CCL_CONFIG:
4191         return "CCL configuration error";
4192     case ZOOM_ERROR_CCL_PARSE:
4193         return "CCL parsing error";
4194     default:
4195         return diagbib1_str(error);
4196     }
4197 }
4198
4199 ZOOM_API(int)
4200     ZOOM_connection_error_x(ZOOM_connection c, const char **cp,
4201                             const char **addinfo, const char **diagset)
4202 {
4203     int error = c->error;
4204     if (cp)
4205     {
4206         if (!c->diagset || !strcmp(c->diagset, "ZOOM"))
4207             *cp = ZOOM_diag_str(error);
4208         else if (!strcmp(c->diagset, "HTTP"))
4209             *cp = z_HTTP_errmsg(c->error);
4210         else if (!strcmp(c->diagset, "Bib-1"))
4211             *cp = ZOOM_diag_str(error);
4212         else if (!strcmp(c->diagset, "info:srw/diagnostic/1"))
4213             *cp = yaz_diag_srw_str(c->error);
4214         else
4215             *cp = "Unknown error and diagnostic set";
4216     }
4217     if (addinfo)
4218         *addinfo = c->addinfo ? c->addinfo : "";
4219     if (diagset)
4220         *diagset = c->diagset ? c->diagset : "";
4221     return c->error;
4222 }
4223
4224 ZOOM_API(int)
4225     ZOOM_connection_error(ZOOM_connection c, const char **cp,
4226                           const char **addinfo)
4227 {
4228     return ZOOM_connection_error_x(c, cp, addinfo, 0);
4229 }
4230
4231 static void ZOOM_connection_do_io(ZOOM_connection c, int mask)
4232 {
4233     ZOOM_Event event = 0;
4234     int r = cs_look(c->cs);
4235     yaz_log(log_details, "%p ZOOM_connection_do_io mask=%d cs_look=%d",
4236             c, mask, r);
4237
4238     if (r == CS_NONE)
4239     {
4240         event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
4241         set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
4242         do_close(c);
4243         ZOOM_connection_put_event(c, event);
4244     }
4245     else if (r == CS_CONNECT)
4246     {
4247         int ret = ret = cs_rcvconnect(c->cs);
4248         yaz_log(log_details, "%p ZOOM_connection_do_io "
4249                 "cs_rcvconnect returned %d", c, ret);
4250         if (ret == 1)
4251         {
4252             int mask = ZOOM_SELECT_EXCEPT;
4253             if (c->cs->io_pending & CS_WANT_WRITE)
4254                 mask += ZOOM_SELECT_WRITE;
4255             if (c->cs->io_pending & CS_WANT_READ)
4256                 mask += ZOOM_SELECT_READ;
4257             ZOOM_connection_set_mask(c, mask);
4258             event = ZOOM_Event_create(ZOOM_EVENT_NONE);
4259             ZOOM_connection_put_event(c, event);
4260         }
4261         else if (ret == 0)
4262         {
4263             event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
4264             ZOOM_connection_put_event(c, event);
4265             get_cert(c);
4266             if (c->proto == PROTO_Z3950)
4267                 ZOOM_connection_send_init(c);
4268             else
4269             {
4270                 /* no init request for SRW .. */
4271                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
4272                 ZOOM_connection_remove_task(c);
4273                 ZOOM_connection_set_mask(c, 0);
4274                 ZOOM_connection_exec_task(c);
4275             }
4276             c->state = STATE_ESTABLISHED;
4277         }
4278         else
4279         {
4280             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
4281             do_close(c);
4282         }
4283     }
4284     else
4285     {
4286         if (mask & ZOOM_SELECT_EXCEPT)
4287         {
4288             if (!ZOOM_test_reconnect(c))
4289             {
4290                 set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
4291                 do_close(c);
4292             }
4293             return;
4294         }
4295         if (mask & ZOOM_SELECT_READ)
4296             do_read(c);
4297         if (c->cs && (mask & ZOOM_SELECT_WRITE))
4298             do_write(c);
4299     }
4300 }
4301
4302 ZOOM_API(int)
4303     ZOOM_connection_last_event(ZOOM_connection cs)
4304 {
4305     if (!cs)
4306         return ZOOM_EVENT_NONE;
4307     return cs->last_event;
4308 }
4309
4310
4311 static void cql2pqf_wrbuf_puts(const char *buf, void *client_data)
4312 {
4313     WRBUF wrbuf = (WRBUF) client_data;
4314     wrbuf_puts(wrbuf, buf);
4315 }
4316
4317 /*
4318  * Returns an xmalloc()d string containing RPN that corresponds to the
4319  * CQL passed in.  On error, sets the Connection object's error state
4320  * and returns a null pointer.
4321  * ### We could cache CQL parser and/or transformer in Connection.
4322  */
4323 static char *cql2pqf(ZOOM_connection c, const char *cql)
4324 {
4325     CQL_parser parser;
4326     int error;
4327     const char *cqlfile;
4328     cql_transform_t trans;
4329     char *result = 0;
4330
4331     parser = cql_parser_create();
4332     if ((error = cql_parser_string(parser, cql)) != 0) {
4333         cql_parser_destroy(parser);
4334         set_ZOOM_error(c, ZOOM_ERROR_CQL_PARSE, cql);
4335         return 0;
4336     }
4337
4338     cqlfile = ZOOM_connection_option_get(c, "cqlfile");
4339     if (cqlfile == 0)
4340     {
4341         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, "no CQL transform file");
4342     }
4343     else if ((trans = cql_transform_open_fname(cqlfile)) == 0)
4344     {
4345         char buf[512];
4346         sprintf(buf, "can't open CQL transform file '%.200s': %.200s",
4347                 cqlfile, strerror(errno));
4348         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4349     }
4350     else
4351     {
4352         WRBUF wrbuf_result = wrbuf_alloc();
4353         error = cql_transform(trans, cql_parser_result(parser),
4354                               cql2pqf_wrbuf_puts, wrbuf_result);
4355         if (error != 0) {
4356             char buf[512];
4357             const char *addinfo;
4358             error = cql_transform_error(trans, &addinfo);
4359             sprintf(buf, "%.200s (addinfo=%.200s)",
4360                     cql_strerror(error), addinfo);
4361             set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4362         }
4363         else
4364         {
4365             result = xstrdup(wrbuf_cstr(wrbuf_result));
4366         }
4367         cql_transform_close(trans);
4368         wrbuf_destroy(wrbuf_result);
4369     }
4370     cql_parser_destroy(parser);
4371     return result;
4372 }
4373
4374 ZOOM_API(int) ZOOM_connection_fire_event_timeout(ZOOM_connection c)
4375 {
4376     if (c->mask)
4377     {
4378         ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
4379         /* timeout and this connection was waiting */
4380         set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
4381         do_close(c);
4382         ZOOM_connection_put_event(c, event);
4383     }
4384     return 0;
4385 }
4386
4387 ZOOM_API(int)
4388     ZOOM_connection_process(ZOOM_connection c)
4389 {
4390     ZOOM_Event event;
4391     if (!c)
4392         return 0;
4393
4394     event = ZOOM_connection_get_event(c);
4395     if (event)
4396     {
4397         ZOOM_Event_destroy(event);
4398         return 1;
4399     }
4400     ZOOM_connection_exec_task(c);
4401     event = ZOOM_connection_get_event(c);
4402     if (event)
4403     {
4404         ZOOM_Event_destroy(event);
4405         return 1;
4406     }
4407     return 0;
4408 }
4409
4410 ZOOM_API(int)
4411     ZOOM_event_nonblock(int no, ZOOM_connection *cs)
4412 {
4413     int i;
4414
4415     yaz_log(log_details, "ZOOM_process_event(no=%d,cs=%p)", no, cs);
4416
4417     for (i = 0; i<no; i++)
4418     {
4419         ZOOM_connection c = cs[i];
4420
4421         if (c && ZOOM_connection_process(c))
4422             return i+1;
4423     }
4424     return 0;
4425 }
4426
4427 ZOOM_API(int) ZOOM_connection_fire_event_socket(ZOOM_connection c, int mask)
4428 {
4429     if (c->mask && mask)
4430         ZOOM_connection_do_io(c, mask);
4431     return 0;
4432 }
4433
4434 ZOOM_API(int) ZOOM_connection_get_socket(ZOOM_connection c)
4435 {
4436     if (c->cs)
4437         return cs_fileno(c->cs);
4438     return -1;
4439 }
4440
4441 ZOOM_API(int) ZOOM_connection_set_mask(ZOOM_connection c, int mask)
4442 {
4443     c->mask = mask;
4444     if (!c->cs)
4445         return -1;
4446     return 0;
4447 }
4448
4449 ZOOM_API(int) ZOOM_connection_get_mask(ZOOM_connection c)
4450 {
4451     if (c->cs)
4452         return c->mask;
4453     return 0;
4454 }
4455
4456 ZOOM_API(int) ZOOM_connection_get_timeout(ZOOM_connection c)
4457 {
4458     return ZOOM_options_get_int(c->options, "timeout", 30);
4459 }
4460
4461 /*
4462  * Local variables:
4463  * c-basic-offset: 4
4464  * indent-tabs-mode: nil
4465  * End:
4466  * vim: shiftwidth=4 tabstop=8 expandtab
4467  */
4468