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 1.141 2007-08-16 10:09:36 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     return c;
 399 }
 400
 401
 402 /* set database names. Take local databases (if set); otherwise
 403    take databases given in ZURL (if set); otherwise use Default */
 404 static char **set_DatabaseNames(ZOOM_connection con, ZOOM_options options,
 405                                 int *num, ODR odr)
 406 {
 407     char **databaseNames;
 408     const char *cp = ZOOM_options_get(options, "databaseName");
 409
 410     if ((!cp || !*cp) && con->host_port)
 411     {
 412         if (strncmp(con->host_port, "unix:", 5) == 0)
 413             cp = strchr(con->host_port+5, ':');
 414         else
 415             cp = strchr(con->host_port, '/');
 416         if (cp)
 417             cp++;
 418     }
 419     if (!cp)
 420         cp = "Default";
 421     nmem_strsplit(odr_getmem(odr), "+", cp,  &databaseNames, num);
 422     return databaseNames;
 423 }
 424
 425 ZOOM_API(ZOOM_connection)
 426     ZOOM_connection_new(const char *host, int portnum)
 427 {
 428     ZOOM_connection c = ZOOM_connection_create(0);
 429
 430     ZOOM_connection_connect(c, host, portnum);
 431     return c;
 432 }
 433
 434 static zoom_sru_mode get_sru_mode_from_string(const char *s)
 435 {
 436     if (!s || !*s)
 437         return zoom_sru_soap;
 438     if (!yaz_matchstr(s, "soap"))
 439         return zoom_sru_soap;
 440     else if (!yaz_matchstr(s, "get"))
 441         return zoom_sru_get;
 442     else if (!yaz_matchstr(s, "post"))
 443         return zoom_sru_post;
 444     return zoom_sru_error;
 445 }
 446
 447 ZOOM_API(void)
 448     ZOOM_connection_connect(ZOOM_connection c,
 449                             const char *host, int portnum)
 450 {
 451     const char *val;
 452     ZOOM_task task;
 453
 454     initlog();
 455
 456     yaz_log(log_api, "%p ZOOM_connection_connect host=%s portnum=%d",
 457             c, host ? host : "null", portnum);
 458
 459     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 460     ZOOM_connection_remove_tasks(c);
 461
 462     if (c->cs)
 463     {
 464         yaz_log(log_details, "%p ZOOM_connection_connect reconnect ok", c);
 465         c->reconnect_ok = 1;
 466         return;
 467     }
 468     yaz_log(log_details, "%p ZOOM_connection_connect connect", c);
 469     xfree(c->proxy);
 470     c->proxy = 0;
 471     val = ZOOM_options_get(c->options, "proxy");
 472     if (val && *val)
 473     {
 474         yaz_log(log_details, "%p ZOOM_connection_connect proxy=%s", c, val);
 475         c->proxy = xstrdup(val);
 476     }
 477
 478     xfree(c->charset);
 479     c->charset = 0;
 480     val = ZOOM_options_get(c->options, "charset");
 481     if (val && *val)
 482     {
 483         yaz_log(log_details, "%p ZOOM_connection_connect charset=%s", c, val);
 484         c->charset = xstrdup(val);
 485     }
 486
 487     xfree(c->lang);
 488     val = ZOOM_options_get(c->options, "lang");
 489     if (val && *val)
 490     {
 491         yaz_log(log_details, "%p ZOOM_connection_connect lang=%s", c, val);
 492         c->lang = xstrdup(val);
 493     }
 494     else
 495         c->lang = 0;
 496
 497     if (host)
 498     {
 499         xfree(c->host_port);
 500         if (portnum)
 501         {
 502             char hostn[128];
 503             sprintf(hostn, "%.80s:%d", host, portnum);
 504             c->host_port = xstrdup(hostn);
 505         }
 506         else
 507             c->host_port = xstrdup(host);
 508     }
 509
 510     {
 511         /*
 512          * If the "<scheme>:" part of the host string is preceded by one
 513          * or more comma-separated <name>=<value> pairs, these are taken
 514          * to be options to be set on the connection object.  Among other
 515          * applications, this facility can be used to embed authentication
 516          * in a host string:
 517          *          user=admin,password=secret,tcp:localhost:9999
 518          */
 519         char *remainder = c->host_port;
 520         char *pcolon = strchr(remainder, ':');
 521         char *pcomma;
 522         char *pequals;
 523         while ((pcomma = strchr(remainder, ',')) != 0 &&
 524                (pcolon == 0 || pcomma < pcolon)) {
 525             *pcomma = '\0';
 526             if ((pequals = strchr(remainder, '=')) != 0) {
 527                 *pequals = '\0';
 528                 /*printf("# setting '%s'='%s'\n", remainder, pequals+1);*/
 529                 ZOOM_connection_option_set(c, remainder, pequals+1);
 530             }
 531             remainder = pcomma+1;
 532         }
 533
 534         if (remainder != c->host_port) {
 535             xfree(c->host_port);
 536             c->host_port = xstrdup(remainder);
 537             /*printf("# reset hp='%s'\n", remainder);*/
 538         }
 539     }
 540
 541     val = ZOOM_options_get(c->options, "sru");
 542     c->sru_mode = get_sru_mode_from_string(val);
 543
 544     ZOOM_options_set(c->options, "host", c->host_port);
 545
 546     xfree(c->cookie_out);
 547     c->cookie_out = 0;
 548     val = ZOOM_options_get(c->options, "cookie");
 549     if (val && *val)
 550     {
 551         yaz_log(log_details, "%p ZOOM_connection_connect cookie=%s", c, val);
 552         c->cookie_out = xstrdup(val);
 553     }
 554
 555     xfree(c->client_IP);
 556     c->client_IP = 0;
 557     val = ZOOM_options_get(c->options, "clientIP");
 558     if (val && *val)
 559     {
 560         yaz_log(log_details, "%p ZOOM_connection_connect clientIP=%s",
 561                 c, val);
 562         c->client_IP = xstrdup(val);
 563     }
 564
 565     xfree(c->group);
 566     c->group = 0;
 567     val = ZOOM_options_get(c->options, "group");
 568     if (val && *val)
 569         c->group = xstrdup(val);
 570
 571     xfree(c->user);
 572     c->user = 0;
 573     val = ZOOM_options_get(c->options, "user");
 574     if (val && *val)
 575         c->user = xstrdup(val);
 576
 577     xfree(c->password);
 578     c->password = 0;
 579     val = ZOOM_options_get(c->options, "password");
 580     if (!val)
 581         val = ZOOM_options_get(c->options, "pass");
 582
 583     if (val && *val)
 584         c->password = xstrdup(val);
 585
 586     c->maximum_record_size =
 587         ZOOM_options_get_int(c->options, "maximumRecordSize", 1024*1024);
 588     c->preferred_message_size =
 589         ZOOM_options_get_int(c->options, "preferredMessageSize", 1024*1024);
 590
 591     c->async = ZOOM_options_get_bool(c->options, "async", 0);
 592     yaz_log(log_details, "%p ZOOM_connection_connect async=%d", c, c->async);
 593
 594     task = ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 595
 596     if (!c->async)
 597     {
 598         while (ZOOM_event(1, &c))
 599             ;
 600     }
 601 }
 602
 603 ZOOM_API(ZOOM_query)
 604     ZOOM_query_create(void)
 605 {
 606     ZOOM_query s = (ZOOM_query) xmalloc(sizeof(*s));
 607
 608     yaz_log(log_details, "%p ZOOM_query_create", s);
 609     s->refcount = 1;
 610     s->z_query = 0;
 611     s->sort_spec = 0;
 612     s->odr = odr_createmem(ODR_ENCODE);
 613     s->query_string = 0;
 614
 615     return s;
 616 }
 617
 618 ZOOM_API(void)
 619     ZOOM_query_destroy(ZOOM_query s)
 620 {
 621     if (!s)
 622         return;
 623
 624     (s->refcount)--;
 625     yaz_log(log_details, "%p ZOOM_query_destroy count=%d", s, s->refcount);
 626     if (s->refcount == 0)
 627     {
 628         odr_destroy(s->odr);
 629         xfree(s);
 630     }
 631 }
 632
 633 ZOOM_API(int)
 634     ZOOM_query_prefix(ZOOM_query s, const char *str)
 635 {
 636     s->query_string = odr_strdup(s->odr, str);
 637     s->z_query = (Z_Query *) odr_malloc(s->odr, sizeof(*s->z_query));
 638     s->z_query->which = Z_Query_type_1;
 639     s->z_query->u.type_1 =  p_query_rpn(s->odr, str);
 640     if (!s->z_query->u.type_1)
 641     {
 642         yaz_log(log_details, "%p ZOOM_query_prefix str=%s failed", s, str);
 643         s->z_query = 0;
 644         return -1;
 645     }
 646     yaz_log(log_details, "%p ZOOM_query_prefix str=%s", s, str);
 647     return 0;
 648 }
 649
 650 ZOOM_API(int)
 651     ZOOM_query_cql(ZOOM_query s, const char *str)
 652 {
 653     Z_External *ext;
 654
 655     s->query_string = odr_strdup(s->odr, str);
 656
 657     ext = (Z_External *) odr_malloc(s->odr, sizeof(*ext));
 658     ext->direct_reference = odr_oiddup(s->odr, yaz_oid_userinfo_cql);
 659     ext->indirect_reference = 0;
 660     ext->descriptor = 0;
 661     ext->which = Z_External_CQL;
 662     ext->u.cql = s->query_string;
 663
 664     s->z_query = (Z_Query *) odr_malloc(s->odr, sizeof(*s->z_query));
 665     s->z_query->which = Z_Query_type_104;
 666     s->z_query->u.type_104 =  ext;
 667
 668     yaz_log(log_details, "%p ZOOM_query_cql str=%s", s, str);
 669
 670     return 0;
 671 }
 672
 673 /*
 674  * Translate the CQL string client-side into RPN which is passed to
 675  * the server.  This is useful for server's that don't themselves
 676  * support CQL, for which ZOOM_query_cql() is useless.  `conn' is used
 677  * only as a place to stash diagnostics if compilation fails; if this
 678  * information is not needed, a null pointer may be used.
 679  */
 680 ZOOM_API(int)
 681     ZOOM_query_cql2rpn(ZOOM_query s, const char *str, ZOOM_connection conn)
 682 {
 683     char *rpn;
 684     int ret;
 685     ZOOM_connection freeme = 0;
 686
 687     yaz_log(log_details, "%p ZOOM_query_cql2rpn str=%s conn=%p", s, str, conn);
 688     if (conn == 0)
 689         conn = freeme = ZOOM_connection_create(0);
 690
 691     rpn = cql2pqf(conn, str);
 692     if (freeme != 0)
 693         ZOOM_connection_destroy(freeme);
 694     if (rpn == 0)
 695         return -1;
 696
 697     ret = ZOOM_query_prefix(s, rpn);
 698     xfree(rpn);
 699     return ret;
 700 }
 701
 702 /*
 703  * Analogous in every way to ZOOM_query_cql2rpn(), except that there
 704  * is no analogous ZOOM_query_ccl() that just sends uninterpreted CCL
 705  * to the server, as the YAZ GFS doesn't know how to handle this.
 706  */
 707 ZOOM_API(int)
 708     ZOOM_query_ccl2rpn(ZOOM_query s, const char *str, const char *config,
 709                        int *ccl_error, const char **error_string,
 710                        int *error_pos)
 711 {
 712     int ret;
 713     struct ccl_rpn_node *rpn;
 714     CCL_bibset bibset = ccl_qual_mk();
 715
 716     if (config)
 717         ccl_qual_buf(bibset, config);
 718
 719     rpn = ccl_find_str(bibset, str, ccl_error, error_pos);
 720     if (!rpn)
 721     {
 722         *error_string = ccl_err_msg(*ccl_error);
 723         ret = -1;
 724     }
 725     else
 726     {
 727         WRBUF wr = wrbuf_alloc();
 728         ccl_pquery(wr, rpn);
 729         ccl_rpn_delete(rpn);
 730         ret = ZOOM_query_prefix(s, wrbuf_cstr(wr));
 731         wrbuf_destroy(wr);
 732     }
 733     ccl_qual_rm(&bibset);
 734     return ret;
 735 }
 736
 737 ZOOM_API(int)
 738     ZOOM_query_sortby(ZOOM_query s, const char *criteria)
 739 {
 740     s->sort_spec = yaz_sort_spec(s->odr, criteria);
 741     if (!s->sort_spec)
 742     {
 743         yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s failed",
 744                 s, criteria);
 745         return -1;
 746     }
 747     yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s", s, criteria);
 748     return 0;
 749 }
 750
 751 static zoom_ret do_write(ZOOM_connection c);
 752
 753 ZOOM_API(void)
 754     ZOOM_connection_destroy(ZOOM_connection c)
 755 {
 756     ZOOM_resultset r;
 757     if (!c)
 758         return;
 759     yaz_log(log_api, "%p ZOOM_connection_destroy", c);
 760     if (c->cs)
 761         cs_close(c->cs);
 762     for (r = c->resultsets; r; r = r->next)
 763         r->connection = 0;
 764
 765     xfree(c->buf_in);
 766     xfree(c->addinfo);
 767     xfree(c->diagset);
 768     odr_destroy(c->odr_in);
 769     odr_destroy(c->odr_out);
 770     ZOOM_options_destroy(c->options);
 771     ZOOM_connection_remove_tasks(c);
 772     ZOOM_connection_remove_events(c);
 773     xfree(c->host_port);
 774     xfree(c->path);
 775     xfree(c->proxy);
 776     xfree(c->charset);
 777     xfree(c->lang);
 778     xfree(c->cookie_out);
 779     xfree(c->cookie_in);
 780     xfree(c->client_IP);
 781     xfree(c->user);
 782     xfree(c->group);
 783     xfree(c->password);
 784     xfree(c);
 785 }
 786
 787 void ZOOM_resultset_addref(ZOOM_resultset r)
 788 {
 789     if (r)
 790     {
 791         (r->refcount)++;
 792         yaz_log(log_details, "%p ZOOM_resultset_addref count=%d",
 793                 r, r->refcount);
 794     }
 795 }
 796
 797 ZOOM_resultset ZOOM_resultset_create(void)
 798 {
 799     int i;
 800     ZOOM_resultset r = (ZOOM_resultset) xmalloc(sizeof(*r));
 801
 802     initlog();
 803
 804     yaz_log(log_details, "%p ZOOM_resultset_create", r);
 805     r->refcount = 1;
 806     r->size = 0;
 807     r->odr = odr_createmem(ODR_ENCODE);
 808     r->piggyback = 1;
 809     r->setname = 0;
 810     r->schema = 0;
 811     r->step = 0;
 812     for (i = 0; i<RECORD_HASH_SIZE; i++)
 813         r->record_hash[i] = 0;
 814     r->r_sort_spec = 0;
 815     r->query = 0;
 816     r->connection = 0;
 817     r->next = 0;
 818     r->databaseNames = 0;
 819     r->num_databaseNames = 0;
 820     return r;
 821 }
 822
 823 ZOOM_API(ZOOM_resultset)
 824     ZOOM_connection_search_pqf(ZOOM_connection c, const char *q)
 825 {
 826     ZOOM_resultset r;
 827     ZOOM_query s = ZOOM_query_create();
 828
 829     ZOOM_query_prefix(s, q);
 830
 831     r = ZOOM_connection_search(c, s);
 832     ZOOM_query_destroy(s);
 833     return r;
 834 }
 835
 836 ZOOM_API(ZOOM_resultset)
 837     ZOOM_connection_search(ZOOM_connection c, ZOOM_query q)
 838 {
 839     ZOOM_resultset r = ZOOM_resultset_create();
 840     ZOOM_task task;
 841     const char *cp;
 842     int start, count;
 843     const char *syntax, *elementSetName;
 844
 845     yaz_log(log_api, "%p ZOOM_connection_search set %p query %p", c, r, q);
 846     r->r_sort_spec = q->sort_spec;
 847     r->query = q;
 848
 849     r->options = ZOOM_options_create_with_parent(c->options);
 850
 851     start = ZOOM_options_get_int(r->options, "start", 0);
 852     count = ZOOM_options_get_int(r->options, "count", 0);
 853     {
 854         /* If "presentChunk" is defined use that; otherwise "step" */
 855         const char *cp = ZOOM_options_get(r->options, "presentChunk");
 856         r->step = ZOOM_options_get_int(r->options,
 857                                        (cp != 0 ? "presentChunk": "step"), 0);
 858     }
 859     r->piggyback = ZOOM_options_get_bool(r->options, "piggyback", 1);
 860     cp = ZOOM_options_get(r->options, "setname");
 861     if (cp)
 862         r->setname = xstrdup(cp);
 863     cp = ZOOM_options_get(r->options, "schema");
 864     if (cp)
 865         r->schema = xstrdup(cp);
 866
 867     r->databaseNames = set_DatabaseNames(c, c->options, &r->num_databaseNames,
 868                                          r->odr);
 869
 870     r->connection = c;
 871
 872     r->next = c->resultsets;
 873     c->resultsets = r;
 874
 875
 876
 877     if (c->host_port && c->proto == PROTO_HTTP)
 878     {
 879         if (!c->cs)
 880         {
 881             yaz_log(log_details, "ZOOM_connection_search: no comstack");
 882             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 883         }
 884         else
 885         {
 886             yaz_log(log_details, "ZOOM_connection_search: reconnect");
 887             c->reconnect_ok = 1;
 888         }
 889     }
 890
 891     task = ZOOM_connection_add_task(c, ZOOM_TASK_SEARCH);
 892     task->u.search.resultset = r;
 893     task->u.search.start = start;
 894     task->u.search.count = count;
 895
 896     syntax = ZOOM_options_get(r->options, "preferredRecordSyntax");
 897     task->u.search.syntax = syntax ? xstrdup(syntax) : 0;
 898     elementSetName = ZOOM_options_get(r->options, "elementSetName");
 899     task->u.search.elementSetName = elementSetName
 900         ? xstrdup(elementSetName) : 0;
 901
 902     ZOOM_resultset_addref(r);
 903
 904     (q->refcount)++;
 905
 906     if (!c->async)
 907     {
 908         while (ZOOM_event(1, &c))
 909             ;
 910     }
 911     return r;
 912 }
 913
 914 ZOOM_API(void)
 915     ZOOM_resultset_sort(ZOOM_resultset r,
 916                          const char *sort_type, const char *sort_spec)
 917 {
 918     (void) ZOOM_resultset_sort1(r, sort_type, sort_spec);
 919 }
 920
 921 ZOOM_API(int)
 922     ZOOM_resultset_sort1(ZOOM_resultset r,
 923                          const char *sort_type, const char *sort_spec)
 924 {
 925     ZOOM_connection c = r->connection;
 926     ZOOM_task task;
 927     ZOOM_query newq;
 928
 929     newq = ZOOM_query_create();
 930     if (ZOOM_query_sortby(newq, sort_spec) < 0)
 931         return -1;
 932
 933     yaz_log(log_api, "%p ZOOM_resultset_sort r=%p sort_type=%s sort_spec=%s",
 934             r, r, sort_type, sort_spec);
 935     if (!c)
 936         return 0;
 937
 938     if (c->host_port && c->proto == PROTO_HTTP)
 939     {
 940         if (!c->cs)
 941         {
 942             yaz_log(log_details, "%p ZOOM_resultset_sort: no comstack", r);
 943             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 944         }
 945         else
 946         {
 947             yaz_log(log_details, "%p ZOOM_resultset_sort: prepare reconnect",
 948                     r);
 949             c->reconnect_ok = 1;
 950         }
 951     }
 952
 953     ZOOM_resultset_cache_reset(r);
 954     task = ZOOM_connection_add_task(c, ZOOM_TASK_SORT);
 955     task->u.sort.resultset = r;
 956     task->u.sort.q = newq;
 957
 958     ZOOM_resultset_addref(r);
 959
 960     if (!c->async)
 961     {
 962         while (ZOOM_event(1, &c))
 963             ;
 964     }
 965
 966     return 0;
 967 }
 968
 969 ZOOM_API(void)
 970     ZOOM_resultset_cache_reset(ZOOM_resultset r)
 971 {
 972     int i;
 973     for (i = 0; i<RECORD_HASH_SIZE; i++)
 974     {
 975         ZOOM_record_cache rc;
 976         for (rc = r->record_hash[i]; rc; rc = rc->next)
 977         {
 978             if (rc->rec.wrbuf_marc)
 979                 wrbuf_destroy(rc->rec.wrbuf_marc);
 980             if (rc->rec.wrbuf_iconv)
 981                 wrbuf_destroy(rc->rec.wrbuf_iconv);
 982             if (rc->rec.wrbuf_opac)
 983                 wrbuf_destroy(rc->rec.wrbuf_opac);
 984         }
 985         r->record_hash[i] = 0;
 986     }
 987 }
 988
 989 ZOOM_API(void)
 990     ZOOM_resultset_destroy(ZOOM_resultset r)
 991 {
 992     resultset_destroy(r);
 993 }
 994
 995 static void resultset_destroy(ZOOM_resultset r)
 996 {
 997     if (!r)
 998         return;
 999     (r->refcount)--;
1000     yaz_log(log_details, "%p ZOOM_resultset_destroy r=%p count=%d",
1001             r, r, r->refcount);
1002     if (r->refcount == 0)
1003     {
1004         ZOOM_resultset_cache_reset(r);
1005
1006         if (r->connection)
1007         {
1008             /* remove ourselves from the resultsets in connection */
1009             ZOOM_resultset *rp = &r->connection->resultsets;
1010             while (1)
1011             {
1012                 assert(*rp);   /* we must be in this list!! */
1013                 if (*rp == r)
1014                 {   /* OK, we're here - take us out of it */
1015                     *rp = (*rp)->next;
1016                     break;
1017                 }
1018                 rp = &(*rp)->next;
1019             }
1020         }
1021         ZOOM_query_destroy(r->query);
1022         ZOOM_options_destroy(r->options);
1023         odr_destroy(r->odr);
1024         xfree(r->setname);
1025         xfree(r->schema);
1026         xfree(r);
1027     }
1028 }
1029
1030 ZOOM_API(size_t)
1031     ZOOM_resultset_size(ZOOM_resultset r)
1032 {
1033     yaz_log(log_details, "ZOOM_resultset_size r=%p count=%d",
1034             r, r->size);
1035     return r->size;
1036 }
1037
1038 static void do_close(ZOOM_connection c)
1039 {
1040     if (c->cs)
1041         cs_close(c->cs);
1042     c->cs = 0;
1043     ZOOM_connection_set_mask(c, 0);
1044     c->state = STATE_IDLE;
1045 }
1046
1047 static int ZOOM_test_reconnect(ZOOM_connection c)
1048 {
1049     ZOOM_Event event;
1050
1051     if (!c->reconnect_ok)
1052         return 0;
1053     do_close(c);
1054     c->reconnect_ok = 0;
1055     c->tasks->running = 0;
1056     ZOOM_connection_insert_task(c, ZOOM_TASK_CONNECT);
1057
1058     event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
1059     ZOOM_connection_put_event(c, event);
1060
1061     return 1;
1062 }
1063
1064 static void ZOOM_resultset_retrieve(ZOOM_resultset r,
1065                                     int force_sync, int start, int count)
1066 {
1067     ZOOM_task task;
1068     ZOOM_connection c;
1069     const char *cp;
1070     const char *syntax, *elementSetName;
1071
1072     if (!r)
1073         return;
1074     yaz_log(log_details, "%p ZOOM_resultset_retrieve force_sync=%d start=%d"
1075             " count=%d", r, force_sync, start, count);
1076     c = r->connection;
1077     if (!c)
1078         return;
1079
1080     if (c->host_port && c->proto == PROTO_HTTP)
1081     {
1082         if (!c->cs)
1083         {
1084             yaz_log(log_details, "%p ZOOM_resultset_retrieve: no comstack", r);
1085             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
1086         }
1087         else
1088         {
1089             yaz_log(log_details, "%p ZOOM_resultset_retrieve: prepare "
1090                     "reconnect", r);
1091             c->reconnect_ok = 1;
1092         }
1093     }
1094     task = ZOOM_connection_add_task(c, ZOOM_TASK_RETRIEVE);
1095     task->u.retrieve.resultset = r;
1096     task->u.retrieve.start = start;
1097     task->u.retrieve.count = count;
1098
1099     syntax = ZOOM_options_get(r->options, "preferredRecordSyntax");
1100     task->u.retrieve.syntax = syntax ? xstrdup(syntax) : 0;
1101     elementSetName = ZOOM_options_get(r->options, "elementSetName");
1102     task->u.retrieve.elementSetName = elementSetName
1103         ? xstrdup(elementSetName) : 0;
1104
1105     cp = ZOOM_options_get(r->options, "schema");
1106     if (cp)
1107     {
1108         if (!r->schema || strcmp(r->schema, cp))
1109         {
1110             xfree(r->schema);
1111             r->schema = xstrdup(cp);
1112         }
1113     }
1114
1115     ZOOM_resultset_addref(r);
1116
1117     if (!r->connection->async || force_sync)
1118         while (r->connection && ZOOM_event(1, &r->connection))
1119             ;
1120 }
1121
1122 ZOOM_API(void)
1123     ZOOM_resultset_records(ZOOM_resultset r, ZOOM_record *recs,
1124                            size_t start, size_t count)
1125 {
1126     int force_present = 0;
1127
1128     if (!r)
1129         return ;
1130     yaz_log(log_api, "%p ZOOM_resultset_records r=%p start=%ld count=%ld",
1131             r, r, (long) start, (long) count);
1132     if (count && recs)
1133         force_present = 1;
1134     ZOOM_resultset_retrieve(r, force_present, start, count);
1135     if (force_present)
1136     {
1137         size_t i;
1138         for (i = 0; i< count; i++)
1139             recs[i] = ZOOM_resultset_record_immediate(r, i+start);
1140     }
1141 }
1142
1143 static void get_cert(ZOOM_connection c)
1144 {
1145     char *cert_buf;
1146     int cert_len;
1147
1148     if (cs_get_peer_certificate_x509(c->cs, &cert_buf, &cert_len))
1149     {
1150         ZOOM_connection_option_setl(c, "sslPeerCert",
1151                                     cert_buf, cert_len);
1152         xfree(cert_buf);
1153     }
1154 }
1155
1156 static zoom_ret do_connect(ZOOM_connection c)
1157 {
1158     void *add;
1159     const char *effective_host;
1160
1161     if (c->proxy)
1162         effective_host = c->proxy;
1163     else
1164         effective_host = c->host_port;
1165
1166     yaz_log(log_details, "%p do_connect effective_host=%s", c, effective_host);
1167
1168     if (c->cs)
1169         cs_close(c->cs);
1170     c->cs = cs_create_host(effective_host, 0, &add);
1171
1172     if (c->cs && c->cs->protocol == PROTO_HTTP)
1173     {
1174 #if YAZ_HAVE_XML2
1175         const char *path = 0;
1176
1177         c->proto = PROTO_HTTP;
1178         cs_get_host_args(c->host_port, &path);
1179         xfree(c->path);
1180         c->path = (char*) xmalloc(strlen(path)+2);
1181         c->path[0] = '/';
1182         strcpy(c->path+1, path);
1183 #else
1184         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_PROTOCOL, "SRW");
1185         do_close(c);
1186         return zoom_complete;
1187 #endif
1188     }
1189     if (c->cs)
1190     {
1191         int ret = cs_connect(c->cs, add);
1192         if (ret == 0)
1193         {
1194             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
1195             ZOOM_connection_put_event(c, event);
1196             get_cert(c);
1197             if (c->proto == PROTO_Z3950)
1198                 ZOOM_connection_send_init(c);
1199             else
1200             {
1201                 /* no init request for SRW .. */
1202                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
1203                 ZOOM_connection_remove_task(c);
1204                 ZOOM_connection_set_mask(c, 0);
1205                 ZOOM_connection_exec_task(c);
1206             }
1207             c->state = STATE_ESTABLISHED;
1208             return zoom_pending;
1209         }
1210         else if (ret > 0)
1211         {
1212             int mask = ZOOM_SELECT_EXCEPT;
1213             if (c->cs->io_pending & CS_WANT_WRITE)
1214                 mask += ZOOM_SELECT_WRITE;
1215             if (c->cs->io_pending & CS_WANT_READ)
1216                 mask += ZOOM_SELECT_READ;
1217             ZOOM_connection_set_mask(c, mask);
1218             c->state = STATE_CONNECTING;
1219             return zoom_pending;
1220         }
1221     }
1222     c->state = STATE_IDLE;
1223     set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
1224     return zoom_complete;
1225 }
1226
1227 static void otherInfo_attach(ZOOM_connection c, Z_APDU *a, ODR out)
1228 {
1229     int i;
1230     for (i = 0; i<200; i++)
1231     {
1232         size_t len;
1233         Odr_oid *oid;
1234         Z_OtherInformation **oi;
1235         char buf[80];
1236         const char *val;
1237         const char *cp;
1238
1239         sprintf(buf, "otherInfo%d", i);
1240         val = ZOOM_options_get(c->options, buf);
1241         if (!val)
1242             break;
1243         cp = strchr(val, ':');
1244         if (!cp)
1245             continue;
1246         len = cp - val;
1247         if (len >= sizeof(buf))
1248             len = sizeof(buf)-1;
1249         memcpy(buf, val, len);
1250         buf[len] = '\0';
1251
1252         oid = yaz_string_to_oid_odr(yaz_oid_std(), CLASS_USERINFO,
1253                                     buf, out);
1254         if (!oid)
1255             continue;
1256
1257         yaz_oi_APDU(a, &oi);
1258         yaz_oi_set_string_oid(oi, out, oid, 1, cp+1);
1259     }
1260 }
1261
1262 static int encode_APDU(ZOOM_connection c, Z_APDU *a, ODR out)
1263 {
1264     assert(a);
1265     if (c->cookie_out)
1266     {
1267         Z_OtherInformation **oi;
1268         yaz_oi_APDU(a, &oi);
1269         yaz_oi_set_string_oid(oi, out, yaz_oid_userinfo_cookie,
1270                               1, c->cookie_out);
1271     }
1272     if (c->client_IP)
1273     {
1274         Z_OtherInformation **oi;
1275         yaz_oi_APDU(a, &oi);
1276         yaz_oi_set_string_oid(oi, out, yaz_oid_userinfo_client_ip,
1277                               1, c->client_IP);
1278     }
1279     otherInfo_attach(c, a, out);
1280     if (!z_APDU(out, &a, 0, 0))
1281     {
1282         FILE *outf = fopen("/tmp/apdu.txt", "a");
1283         if (a && outf)
1284         {
1285             ODR odr_pr = odr_createmem(ODR_PRINT);
1286             fprintf(outf, "a=%p\n", a);
1287             odr_setprint(odr_pr, outf);
1288             z_APDU(odr_pr, &a, 0, 0);
1289             odr_destroy(odr_pr);
1290         }
1291         yaz_log(log_api, "%p encoding_APDU: encoding failed", c);
1292         set_ZOOM_error(c, ZOOM_ERROR_ENCODE, 0);
1293         odr_reset(out);
1294         return -1;
1295     }
1296     yaz_log(log_details, "%p encoding_APDU encoding OK", c);
1297     return 0;
1298 }
1299
1300 static zoom_ret send_APDU(ZOOM_connection c, Z_APDU *a)
1301 {
1302     ZOOM_Event event;
1303     assert(a);
1304     if (encode_APDU(c, a, c->odr_out))
1305         return zoom_complete;
1306     yaz_log(log_details, "%p send APDU type=%d", c, a->which);
1307     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1308     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
1309     ZOOM_connection_put_event(c, event);
1310     odr_reset(c->odr_out);
1311     return do_write(c);
1312 }
1313
1314 /* returns 1 if PDU was sent OK (still pending )
1315    0 if PDU was not sent OK (nothing to wait for)
1316 */
1317
1318 static zoom_ret ZOOM_connection_send_init(ZOOM_connection c)
1319 {
1320     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_initRequest);
1321     Z_InitRequest *ireq = apdu->u.initRequest;
1322     Z_IdAuthentication *auth = (Z_IdAuthentication *)
1323         odr_malloc(c->odr_out, sizeof(*auth));
1324     char *version;
1325
1326     ODR_MASK_SET(ireq->options, Z_Options_search);
1327     ODR_MASK_SET(ireq->options, Z_Options_present);
1328     ODR_MASK_SET(ireq->options, Z_Options_scan);
1329     ODR_MASK_SET(ireq->options, Z_Options_sort);
1330     ODR_MASK_SET(ireq->options, Z_Options_extendedServices);
1331     ODR_MASK_SET(ireq->options, Z_Options_namedResultSets);
1332
1333     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_1);
1334     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_2);
1335     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_3);
1336
1337     /* Index Data's Z39.50 Implementor Id is 81 */
1338     ireq->implementationId =
1339         odr_prepend(c->odr_out,
1340                     ZOOM_options_get(c->options, "implementationId"),
1341                     odr_prepend(c->odr_out, "81", ireq->implementationId));
1342
1343     ireq->implementationName =
1344         odr_prepend(c->odr_out,
1345                     ZOOM_options_get(c->options, "implementationName"),
1346                     odr_prepend(c->odr_out, "ZOOM-C",
1347                                 ireq->implementationName));
1348
1349     version = odr_strdup(c->odr_out, "$Revision: 1.141 $");
1350     if (strlen(version) > 10)   /* check for unexpanded CVS strings */
1351         version[strlen(version)-2] = '\0';
1352     ireq->implementationVersion =
1353         odr_prepend(c->odr_out,
1354                     ZOOM_options_get(c->options, "implementationVersion"),
1355                     odr_prepend(c->odr_out, &version[11],
1356                                 ireq->implementationVersion));
1357
1358     *ireq->maximumRecordSize = c->maximum_record_size;
1359     *ireq->preferredMessageSize = c->preferred_message_size;
1360
1361     if (c->group || c->password)
1362     {
1363         Z_IdPass *pass = (Z_IdPass *) odr_malloc(c->odr_out, sizeof(*pass));
1364         pass->groupId = 0;
1365         if (c->group)
1366             pass->groupId = odr_strdup(c->odr_out, c->group);
1367         pass->userId = 0;
1368         if (c->user)
1369             pass->userId = odr_strdup(c->odr_out, c->user);
1370         pass->password = 0;
1371         if (c->password)
1372             pass->password = odr_strdup(c->odr_out, c->password);
1373         auth->which = Z_IdAuthentication_idPass;
1374         auth->u.idPass = pass;
1375         ireq->idAuthentication = auth;
1376     }
1377     else if (c->user)
1378     {
1379         auth->which = Z_IdAuthentication_open;
1380         auth->u.open = odr_strdup(c->odr_out, c->user);
1381         ireq->idAuthentication = auth;
1382     }
1383     if (c->proxy)
1384     {
1385         yaz_oi_set_string_oid(&ireq->otherInfo, c->odr_out,
1386                               yaz_oid_userinfo_proxy, 1, c->host_port);
1387     }
1388     if (c->charset || c->lang)
1389     {
1390         Z_OtherInformation **oi;
1391         Z_OtherInformationUnit *oi_unit;
1392
1393         yaz_oi_APDU(apdu, &oi);
1394
1395         if ((oi_unit = yaz_oi_update(oi, c->odr_out, NULL, 0, 0)))
1396         {
1397             ODR_MASK_SET(ireq->options, Z_Options_negotiationModel);
1398             oi_unit->which = Z_OtherInfo_externallyDefinedInfo;
1399             oi_unit->information.externallyDefinedInfo =
1400                 yaz_set_proposal_charneg_list(c->odr_out, " ",
1401                                               c->charset, c->lang, 1);
1402         }
1403     }
1404     assert(apdu);
1405     return send_APDU(c, apdu);
1406 }
1407
1408 #if YAZ_HAVE_XML2
1409 static zoom_ret send_srw(ZOOM_connection c, Z_SRW_PDU *sr)
1410 {
1411     Z_GDU *gdu;
1412     ZOOM_Event event;
1413
1414     gdu = z_get_HTTP_Request_host_path(c->odr_out, c->host_port, c->path);
1415
1416     if (c->sru_mode == zoom_sru_get)
1417     {
1418         yaz_sru_get_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1419     }
1420     else if (c->sru_mode == zoom_sru_post)
1421     {
1422         yaz_sru_post_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1423     }
1424     else if (c->sru_mode == zoom_sru_soap)
1425     {
1426         yaz_sru_soap_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1427     }
1428     if (!z_GDU(c->odr_out, &gdu, 0, 0))
1429         return zoom_complete;
1430     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1431
1432     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
1433     ZOOM_connection_put_event(c, event);
1434     odr_reset(c->odr_out);
1435     return do_write(c);
1436 }
1437 #endif
1438
1439 #if YAZ_HAVE_XML2
1440 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1441 {
1442     int i;
1443     int *start, *count;
1444     ZOOM_resultset resultset = 0;
1445     Z_SRW_PDU *sr = 0;
1446     const char *option_val = 0;
1447
1448     if (c->error)                  /* don't continue on error */
1449         return zoom_complete;
1450     assert(c->tasks);
1451     switch(c->tasks->which)
1452     {
1453     case ZOOM_TASK_SEARCH:
1454         resultset = c->tasks->u.search.resultset;
1455         resultset->setname = xstrdup("default");
1456         ZOOM_options_set(resultset->options, "setname", resultset->setname);
1457         start = &c->tasks->u.search.start;
1458         count = &c->tasks->u.search.count;
1459         break;
1460     case ZOOM_TASK_RETRIEVE:
1461         resultset = c->tasks->u.retrieve.resultset;
1462
1463         start = &c->tasks->u.retrieve.start;
1464         count = &c->tasks->u.retrieve.count;
1465
1466         if (*start >= resultset->size)
1467             return zoom_complete;
1468         if (*start + *count > resultset->size)
1469             *count = resultset->size - *start;
1470
1471         for (i = 0; i < *count; i++)
1472         {
1473             ZOOM_record rec =
1474                 record_cache_lookup(resultset, i + *start,
1475                                     c->tasks->u.retrieve.syntax,
1476                                     c->tasks->u.retrieve.elementSetName);
1477             if (!rec)
1478                 break;
1479             else
1480             {
1481                 ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
1482                 ZOOM_connection_put_event(c, event);
1483             }
1484         }
1485         *start += i;
1486         *count -= i;
1487
1488         if (*count == 0)
1489             return zoom_complete;
1490         break;
1491     default:
1492         return zoom_complete;
1493     }
1494     assert(resultset->query);
1495
1496     sr = yaz_srw_get(c->odr_out, Z_SRW_searchRetrieve_request);
1497
1498     if (resultset->query->z_query->which == Z_Query_type_104
1499         && resultset->query->z_query->u.type_104->which == Z_External_CQL)
1500     {
1501         sr->u.request->query_type = Z_SRW_query_type_cql;
1502         sr->u.request->query.cql =resultset->query->z_query->u.type_104->u.cql;
1503     }
1504     else if (resultset->query->z_query->which == Z_Query_type_1 &&
1505              resultset->query->z_query->u.type_1)
1506     {
1507         sr->u.request->query_type = Z_SRW_query_type_pqf;
1508         sr->u.request->query.pqf = resultset->query->query_string;
1509     }
1510     else
1511     {
1512         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
1513         return zoom_complete;
1514     }
1515     sr->u.request->startRecord = odr_intdup(c->odr_out, *start + 1);
1516     sr->u.request->maximumRecords = odr_intdup(
1517         c->odr_out, resultset->step>0 ? resultset->step : *count);
1518     sr->u.request->recordSchema = resultset->schema;
1519
1520     option_val = ZOOM_resultset_option_get(resultset, "recordPacking");
1521     if (option_val)
1522         sr->u.request->recordPacking = odr_strdup(c->odr_out, option_val);
1523
1524     option_val = ZOOM_resultset_option_get(resultset, "extraArgs");
1525     if (option_val)
1526         sr->extra_args = odr_strdup(c->odr_out, option_val);
1527     return send_srw(c, sr);
1528 }
1529 #else
1530 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1531 {
1532     return zoom_complete;
1533 }
1534 #endif
1535
1536 static zoom_ret ZOOM_connection_send_search(ZOOM_connection c)
1537 {
1538     ZOOM_resultset r;
1539     int lslb, ssub, mspn;
1540     const char *syntax;
1541     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_searchRequest);
1542     Z_SearchRequest *search_req = apdu->u.searchRequest;
1543     const char *elementSetName;
1544     const char *smallSetElementSetName;
1545     const char *mediumSetElementSetName;
1546
1547     assert(c->tasks);
1548     assert(c->tasks->which == ZOOM_TASK_SEARCH);
1549
1550     r = c->tasks->u.search.resultset;
1551
1552     yaz_log(log_details, "%p ZOOM_connection_send_search set=%p", c, r);
1553
1554     elementSetName =
1555         ZOOM_options_get(r->options, "elementSetName");
1556     smallSetElementSetName  =
1557         ZOOM_options_get(r->options, "smallSetElementSetName");
1558     mediumSetElementSetName =
1559         ZOOM_options_get(r->options, "mediumSetElementSetName");
1560
1561     if (!smallSetElementSetName)
1562         smallSetElementSetName = elementSetName;
1563
1564     if (!mediumSetElementSetName)
1565         mediumSetElementSetName = elementSetName;
1566
1567     assert(r);
1568     assert(r->query);
1569
1570     /* prepare query for the search request */
1571     search_req->query = r->query->z_query;
1572     if (!search_req->query)
1573     {
1574         set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
1575         return zoom_complete;
1576     }
1577     if (r->query->z_query->which == Z_Query_type_1 ||
1578         r->query->z_query->which == Z_Query_type_101)
1579     {
1580         const char *cp = ZOOM_options_get(r->options, "rpnCharset");
1581         if (cp)
1582         {
1583             yaz_iconv_t cd = yaz_iconv_open(cp, "UTF-8");
1584             if (cd)
1585             {
1586                 search_req->query = yaz_copy_Z_Query(search_req->query,
1587                                                      c->odr_out);
1588
1589                 yaz_query_charset_convert_rpnquery(search_req->query->u.type_1,
1590                                                    c->odr_out, cd);
1591                 yaz_iconv_close(cd);
1592             }
1593         }
1594     }
1595     search_req->databaseNames = r->databaseNames;
1596     search_req->num_databaseNames = r->num_databaseNames;
1597
1598     /* get syntax (no need to provide unless piggyback is in effect) */
1599     syntax = c->tasks->u.search.syntax;
1600
1601     lslb = ZOOM_options_get_int(r->options, "largeSetLowerBound", -1);
1602     ssub = ZOOM_options_get_int(r->options, "smallSetUpperBound", -1);
1603     mspn = ZOOM_options_get_int(r->options, "mediumSetPresentNumber", -1);
1604     if (lslb != -1 && ssub != -1 && mspn != -1)
1605     {
1606         /* So're a Z39.50 expert? Let's hope you don't do sort */
1607         *search_req->largeSetLowerBound = lslb;
1608         *search_req->smallSetUpperBound = ssub;
1609         *search_req->mediumSetPresentNumber = mspn;
1610     }
1611     else if (c->tasks->u.search.start == 0 && c->tasks->u.search.count > 0
1612              && r->piggyback && !r->r_sort_spec && !r->schema)
1613     {
1614         /* Regular piggyback - do it unless we're going to do sort */
1615         *search_req->largeSetLowerBound = 2000000000;
1616         *search_req->smallSetUpperBound = 1;
1617         *search_req->mediumSetPresentNumber =
1618             r->step>0 ? r->step : c->tasks->u.search.count;
1619     }
1620     else
1621     {
1622         /* non-piggyback. Need not provide elementsets or syntaxes .. */
1623         smallSetElementSetName = 0;
1624         mediumSetElementSetName = 0;
1625         syntax = 0;
1626     }
1627     if (smallSetElementSetName && *smallSetElementSetName)
1628     {
1629         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1630             odr_malloc(c->odr_out, sizeof(*esn));
1631
1632         esn->which = Z_ElementSetNames_generic;
1633         esn->u.generic = odr_strdup(c->odr_out, smallSetElementSetName);
1634         search_req->smallSetElementSetNames = esn;
1635     }
1636     if (mediumSetElementSetName && *mediumSetElementSetName)
1637     {
1638         Z_ElementSetNames *esn =(Z_ElementSetNames *)
1639             odr_malloc(c->odr_out, sizeof(*esn));
1640
1641         esn->which = Z_ElementSetNames_generic;
1642         esn->u.generic = odr_strdup(c->odr_out, mediumSetElementSetName);
1643         search_req->mediumSetElementSetNames = esn;
1644     }
1645     if (syntax)
1646         search_req->preferredRecordSyntax =
1647             zoom_yaz_str_to_z3950oid(c, CLASS_RECSYN, syntax);
1648
1649     if (!r->setname)
1650     {
1651         if (c->support_named_resultsets)
1652         {
1653             char setname[14];
1654             int ord;
1655             /* find the lowest unused ordinal so that we re-use
1656                result sets on the server. */
1657             for (ord = 1; ; ord++)
1658             {
1659                 ZOOM_resultset rp;
1660                 sprintf(setname, "%d", ord);
1661                 for (rp = c->resultsets; rp; rp = rp->next)
1662                     if (rp->setname && !strcmp(rp->setname, setname))
1663                         break;
1664                 if (!rp)
1665                     break;
1666             }
1667             r->setname = xstrdup(setname);
1668             yaz_log(log_details, "%p ZOOM_connection_send_search: allocating "
1669                     "set %s", c, r->setname);
1670         }
1671         else
1672         {
1673             yaz_log(log_details, "%p ZOOM_connection_send_search: using "
1674                     "default set", c);
1675             r->setname = xstrdup("default");
1676         }
1677         ZOOM_options_set(r->options, "setname", r->setname);
1678     }
1679     search_req->resultSetName = odr_strdup(c->odr_out, r->setname);
1680     return send_APDU(c, apdu);
1681 }
1682
1683 static void response_default_diag(ZOOM_connection c, Z_DefaultDiagFormat *r)
1684 {
1685     char oid_name_buf[OID_STR_MAX];
1686     const char *oid_name;
1687     char *addinfo = 0;
1688
1689     oid_name = yaz_oid_to_string_buf(r->diagnosticSetId, 0, oid_name_buf);
1690     switch (r->which)
1691     {
1692     case Z_DefaultDiagFormat_v2Addinfo:
1693         addinfo = r->u.v2Addinfo;
1694         break;
1695     case Z_DefaultDiagFormat_v3Addinfo:
1696         addinfo = r->u.v3Addinfo;
1697         break;
1698     }
1699     xfree(c->addinfo);
1700     c->addinfo = 0;
1701     set_dset_error(c, *r->condition, oid_name, addinfo, 0);
1702 }
1703
1704 static void response_diag(ZOOM_connection c, Z_DiagRec *p)
1705 {
1706     if (p->which != Z_DiagRec_defaultFormat)
1707         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1708     else
1709         response_default_diag(c, p->u.defaultFormat);
1710 }
1711
1712 ZOOM_API(ZOOM_record)
1713     ZOOM_record_clone(ZOOM_record srec)
1714 {
1715     char *buf;
1716     int size;
1717     ODR odr_enc;
1718     ZOOM_record nrec;
1719
1720     odr_enc = odr_createmem(ODR_ENCODE);
1721     if (!z_NamePlusRecord(odr_enc, &srec->npr, 0, 0))
1722         return 0;
1723     buf = odr_getbuf(odr_enc, &size, 0);
1724
1725     nrec = (ZOOM_record) xmalloc(sizeof(*nrec));
1726     nrec->odr = odr_createmem(ODR_DECODE);
1727     nrec->wrbuf_marc = 0;
1728     nrec->wrbuf_iconv = 0;
1729     nrec->wrbuf_opac = 0;
1730     odr_setbuf(nrec->odr, buf, size, 0);
1731     z_NamePlusRecord(nrec->odr, &nrec->npr, 0, 0);
1732
1733     odr_destroy(odr_enc);
1734     return nrec;
1735 }
1736
1737 ZOOM_API(ZOOM_record)
1738     ZOOM_resultset_record_immediate(ZOOM_resultset s,size_t pos)
1739 {
1740     const char *syntax =
1741         ZOOM_options_get(s->options, "preferredRecordSyntax");
1742     const char *elementSetName =
1743         ZOOM_options_get(s->options, "elementSetName");
1744
1745     return record_cache_lookup(s, pos, syntax, elementSetName);
1746 }
1747
1748 ZOOM_API(ZOOM_record)
1749     ZOOM_resultset_record(ZOOM_resultset r, size_t pos)
1750 {
1751     ZOOM_record rec = ZOOM_resultset_record_immediate(r, pos);
1752
1753     if (!rec)
1754     {
1755         /*
1756          * MIKE: I think force_sync should always be zero, but I don't
1757          * want to make this change until I get the go-ahead from
1758          * Adam, in case something depends on the old synchronous
1759          * behaviour.
1760          */
1761         int force_sync = 1;
1762         if (getenv("ZOOM_RECORD_NO_FORCE_SYNC")) force_sync = 0;
1763         ZOOM_resultset_retrieve(r, force_sync, pos, 1);
1764         rec = ZOOM_resultset_record_immediate(r, pos);
1765     }
1766     return rec;
1767 }
1768
1769 ZOOM_API(void)
1770     ZOOM_record_destroy(ZOOM_record rec)
1771 {
1772     if (!rec)
1773         return;
1774     if (rec->wrbuf_marc)
1775         wrbuf_destroy(rec->wrbuf_marc);
1776     if (rec->wrbuf_iconv)
1777         wrbuf_destroy(rec->wrbuf_iconv);
1778     if (rec->wrbuf_opac)
1779         wrbuf_destroy(rec->wrbuf_opac);
1780     odr_destroy(rec->odr);
1781     xfree(rec);
1782 }
1783
1784 static const char *marc_iconv_return(ZOOM_record rec, int marc_type,
1785                                      int *len,
1786                                      const char *buf, int sz,
1787                                      const char *record_charset)
1788 {
1789     char to[40];
1790     char from[40];
1791     yaz_iconv_t cd = 0;
1792     yaz_marc_t mt = yaz_marc_create();
1793
1794     *from = '\0';
1795     strcpy(to, "UTF-8");
1796     if (record_charset && *record_charset)
1797     {
1798         /* Use "from,to" or just "from" */
1799         const char *cp = strchr(record_charset, ',');
1800         int clen = strlen(record_charset);
1801         if (cp && cp[1])
1802         {
1803             strncpy( to, cp+1, sizeof(to)-1);
1804             to[sizeof(to)-1] = '\0';
1805             clen = cp - record_charset;
1806         }
1807         if (clen > sizeof(from)-1)
1808             clen = sizeof(from)-1;
1809
1810         if (clen)
1811             strncpy(from, record_charset, clen);
1812         from[clen] = '\0';
1813     }
1814
1815     if (*from && *to)
1816     {
1817         cd = yaz_iconv_open(to, from);
1818         yaz_marc_iconv(mt, cd);
1819     }
1820
1821     yaz_marc_xml(mt, marc_type);
1822     if (!rec->wrbuf_marc)
1823         rec->wrbuf_marc = wrbuf_alloc();
1824     wrbuf_rewind(rec->wrbuf_marc);
1825     if (yaz_marc_decode_wrbuf(mt, buf, sz, rec->wrbuf_marc) > 0)
1826     {
1827         yaz_marc_destroy(mt);
1828         if (cd)
1829             yaz_iconv_close(cd);
1830         if (len)
1831             *len = wrbuf_len(rec->wrbuf_marc);
1832         return wrbuf_cstr(rec->wrbuf_marc);
1833     }
1834     yaz_marc_destroy(mt);
1835     if (cd)
1836         yaz_iconv_close(cd);
1837     return 0;
1838 }
1839
1840 static const char *record_iconv_return(ZOOM_record rec, int *len,
1841                                        const char *buf, int sz,
1842                                        const char *record_charset)
1843 {
1844     char to[40];
1845     char from[40];
1846     yaz_iconv_t cd = 0;
1847
1848     *from = '\0';
1849     strcpy(to, "UTF-8");
1850
1851     if (record_charset && *record_charset)
1852     {
1853         /* Use "from,to" or just "from" */
1854         const char *cp = strchr(record_charset, ',');
1855         int clen = strlen(record_charset);
1856         if (cp && cp[1])
1857         {
1858             strncpy( to, cp+1, sizeof(to)-1);
1859             to[sizeof(to)-1] = '\0';
1860             clen = cp - record_charset;
1861         }
1862         if (clen > sizeof(from)-1)
1863             clen = sizeof(from)-1;
1864
1865         if (clen)
1866             strncpy(from, record_charset, clen);
1867         from[clen] = '\0';
1868     }
1869
1870     if (*from && *to && (cd = yaz_iconv_open(to, from)))
1871     {
1872         if (!rec->wrbuf_iconv)
1873             rec->wrbuf_iconv = wrbuf_alloc();
1874
1875         wrbuf_rewind(rec->wrbuf_iconv);
1876
1877         wrbuf_iconv_write(rec->wrbuf_iconv, cd, buf, sz);
1878         wrbuf_iconv_reset(rec->wrbuf_iconv, cd);
1879
1880         buf = wrbuf_cstr(rec->wrbuf_iconv);
1881         sz = wrbuf_len(rec->wrbuf_iconv);
1882         yaz_iconv_close(cd);
1883     }
1884     if (len)
1885         *len = sz;
1886     return buf;
1887 }
1888
1889 ZOOM_API(int)
1890     ZOOM_record_error(ZOOM_record rec, const char **cp,
1891                       const char **addinfo, const char **diagset)
1892 {
1893     Z_NamePlusRecord *npr;
1894
1895     if (!rec)
1896         return 0;
1897     npr = rec->npr;
1898     if (npr && npr->which == Z_NamePlusRecord_surrogateDiagnostic)
1899     {
1900         Z_DiagRec *diag_rec = npr->u.surrogateDiagnostic;
1901         int error = YAZ_BIB1_UNSPECIFIED_ERROR;
1902         const char *add = 0;
1903
1904         if (diag_rec->which == Z_DiagRec_defaultFormat)
1905         {
1906             Z_DefaultDiagFormat *ddf = diag_rec->u.defaultFormat;
1907             oid_class oclass;
1908
1909             error = *ddf->condition;
1910             switch (ddf->which)
1911             {
1912             case Z_DefaultDiagFormat_v2Addinfo:
1913                 add = ddf->u.v2Addinfo;
1914                 break;
1915             case Z_DefaultDiagFormat_v3Addinfo:
1916                 add = ddf->u.v3Addinfo;
1917                 break;
1918             }
1919             if (diagset)
1920                 *diagset =
1921                     yaz_oid_to_string(yaz_oid_std(),
1922                                       ddf->diagnosticSetId, &oclass);
1923         }
1924         else
1925         {
1926             if (diagset)
1927                 *diagset = "Bib-1";
1928         }
1929         if (addinfo)
1930             *addinfo = add ? add : "";
1931         if (cp)
1932             *cp = diagbib1_str(error);
1933         return error;
1934     }
1935     return 0;
1936 }
1937
1938 ZOOM_API(const char *)
1939     ZOOM_record_get(ZOOM_record rec, const char *type_spec, int *len)
1940 {
1941     char type[40];
1942     char charset[40];
1943     char xpath[512];
1944     const char *cp;
1945     int i;
1946     Z_NamePlusRecord *npr;
1947
1948     if (len)
1949         *len = 0; /* default return */
1950
1951     if (!rec)
1952         return 0;
1953     npr = rec->npr;
1954     if (!npr)
1955         return 0;
1956
1957     cp = type_spec;
1958     for (i = 0; cp[i] && i < sizeof(type)-1; i++)
1959     {
1960         if (cp[i] == ';' || cp[i] == ' ')
1961             break;
1962         type[i] = cp[i];
1963     }
1964     type[i] = '\0';
1965     charset[0] = '\0';
1966     while (type_spec[i] == ';')
1967     {
1968         i++;
1969         while (type_spec[i] == ' ')
1970             i++;
1971         if (!strncmp(type_spec+i, "charset=", 8))
1972         {
1973             int j = 0;
1974             i = i + 8; /* skip charset= */
1975             for (j = 0; type_spec[i]  && j < sizeof(charset)-1; i++, j++)
1976             {
1977                 if (type_spec[i] == ';' || type_spec[i] == ' ')
1978                     break;
1979                 charset[j] = cp[i];
1980             }
1981             charset[j] = '\0';
1982         }
1983         else if (!strncmp(type_spec+i, "xpath=", 6))
1984         {
1985             int j = 0;
1986             i = i + 6;
1987             for (j = 0; type_spec[i] && j < sizeof(xpath)-1; i++, j++)
1988                 xpath[j] = cp[i];
1989             xpath[j] = '\0';
1990         }
1991         while (type_spec[i] == ' ')
1992             i++;
1993     }
1994     if (!strcmp(type, "database"))
1995     {
1996         if (len)
1997             *len = (npr->databaseName ? strlen(npr->databaseName) : 0);
1998         return npr->databaseName;
1999     }
2000     else if (!strcmp(type, "syntax"))
2001     {
2002         const char *desc = 0;
2003         if (npr->which == Z_NamePlusRecord_databaseRecord)
2004         {
2005             Z_External *r = (Z_External *) npr->u.databaseRecord;
2006             desc = yaz_oid_to_string(yaz_oid_std(), r->direct_reference, 0);
2007         }
2008         if (!desc)
2009             desc = "none";
2010         if (len)
2011             *len = strlen(desc);
2012         return desc;
2013     }
2014     if (npr->which != Z_NamePlusRecord_databaseRecord)
2015         return 0;
2016
2017     /* from now on - we have a database record .. */
2018     if (!strcmp(type, "render"))
2019     {
2020         Z_External *r = (Z_External *) npr->u.databaseRecord;
2021         const Odr_oid *oid = r->direct_reference;
2022
2023         /* render bibliographic record .. */
2024         if (r->which == Z_External_OPAC)
2025         {
2026             r = r->u.opac->bibliographicRecord;
2027             if (!r)
2028                 return 0;
2029             oid = r->direct_reference;
2030         }
2031         if (r->which == Z_External_sutrs)
2032             return record_iconv_return(rec, len,
2033                                        (char*) r->u.sutrs->buf,
2034                                        r->u.sutrs->len,
2035                                        charset);
2036         else if (r->which == Z_External_octet)
2037         {
2038             if (yaz_oid_is_iso2709(oid))
2039             {
2040                 const char *ret_buf = marc_iconv_return(
2041                     rec, YAZ_MARC_LINE, len,
2042                     (const char *) r->u.octet_aligned->buf,
2043                     r->u.octet_aligned->len,
2044                     charset);
2045                 if (ret_buf)
2046                     return ret_buf;
2047             }
2048             return record_iconv_return(rec, len,
2049                                        (const char *) r->u.octet_aligned->buf,
2050                                        r->u.octet_aligned->len,
2051                                        charset);
2052         }
2053         else if (r->which == Z_External_grs1)
2054         {
2055             if (!rec->wrbuf_marc)
2056                 rec->wrbuf_marc = wrbuf_alloc();
2057             wrbuf_rewind(rec->wrbuf_marc);
2058             yaz_display_grs1(rec->wrbuf_marc, r->u.grs1, 0);
2059             return record_iconv_return(rec, len,
2060                                        wrbuf_buf(rec->wrbuf_marc),
2061                                        wrbuf_len(rec->wrbuf_marc),
2062                                        charset);
2063         }
2064         return 0;
2065     }
2066     else if (!strcmp(type, "xml"))
2067     {
2068         Z_External *r = (Z_External *) npr->u.databaseRecord;
2069         const Odr_oid *oid = r->direct_reference;
2070
2071         /* render bibliographic record .. */
2072         if (r->which == Z_External_OPAC)
2073         {
2074             r = r->u.opac->bibliographicRecord;
2075             if (!r)
2076                 return 0;
2077             oid = r->direct_reference;
2078         }
2079
2080         if (r->which == Z_External_sutrs)
2081             return record_iconv_return(rec, len,
2082                                        (const char *) r->u.sutrs->buf,
2083                                        r->u.sutrs->len,
2084                                        charset);
2085         else if (r->which == Z_External_octet)
2086         {
2087             int marc_decode_type = YAZ_MARC_MARCXML;
2088             if (yaz_oid_is_iso2709(oid))
2089             {
2090                 const char *ret_buf = marc_iconv_return(
2091                     rec, marc_decode_type, len,
2092                     (const char *) r->u.octet_aligned->buf,
2093                     r->u.octet_aligned->len,
2094                     charset);
2095                 if (ret_buf)
2096                     return ret_buf;
2097             }
2098             return record_iconv_return(rec, len,
2099                                        (const char *) r->u.octet_aligned->buf,
2100                                        r->u.octet_aligned->len,
2101                                        charset);
2102         }
2103         else if (r->which == Z_External_grs1)
2104         {
2105             if (len) *len = 5;
2106             return "GRS-1";
2107         }
2108         return 0;
2109     }
2110     else if (!strcmp(type, "raw"))
2111     {
2112         Z_External *r = (Z_External *) npr->u.databaseRecord;
2113
2114         if (r->which == Z_External_sutrs)
2115         {
2116             if (len) *len = r->u.sutrs->len;
2117             return (const char *) r->u.sutrs->buf;
2118         }
2119         else if (r->which == Z_External_octet)
2120         {
2121             if (len) *len = r->u.octet_aligned->len;
2122             return (const char *) r->u.octet_aligned->buf;
2123         }
2124         else /* grs-1, explain, OPAC, ... */
2125         {
2126             if (len) *len = -1;
2127             return (const char *) npr->u.databaseRecord;
2128         }
2129         return 0;
2130     }
2131     else if (!strcmp (type, "ext"))
2132     {
2133         if (len) *len = -1;
2134         return (const char *) npr->u.databaseRecord;
2135     }
2136     else if (!strcmp (type, "opac"))
2137
2138     {
2139         Z_External *r = (Z_External *) npr->u.databaseRecord;
2140         if (r->which == Z_External_OPAC)
2141         {
2142             if (!rec->wrbuf_opac)
2143                 rec->wrbuf_opac = wrbuf_alloc();
2144             wrbuf_rewind(rec->wrbuf_opac);
2145             yaz_display_OPAC(rec->wrbuf_opac, r->u.opac, 0);
2146             return record_iconv_return(rec, len,
2147                                        wrbuf_buf(rec->wrbuf_opac),
2148                                        wrbuf_len(rec->wrbuf_opac),
2149                                        charset);
2150         }
2151     }
2152     return 0;
2153 }
2154
2155 static int strcmp_null(const char *v1, const char *v2)
2156 {
2157     if (!v1 && !v2)
2158         return 0;
2159     if (!v1 || !v2)
2160         return -1;
2161     return strcmp(v1, v2);
2162 }
2163
2164 static size_t record_hash(int pos)
2165 {
2166     if (pos < 0)
2167         pos = 0;
2168     return pos % RECORD_HASH_SIZE;
2169 }
2170
2171 static void record_cache_add(ZOOM_resultset r, Z_NamePlusRecord *npr,
2172                              int pos,
2173                              const char *syntax, const char *elementSetName)
2174 {
2175     ZOOM_record_cache rc;
2176
2177     ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
2178     ZOOM_connection_put_event(r->connection, event);
2179
2180     for (rc = r->record_hash[record_hash(pos)]; rc; rc = rc->next)
2181     {
2182         if (pos == rc->pos)
2183         {
2184             if (strcmp_null(r->schema, rc->schema))
2185                 continue;
2186             if (strcmp_null(elementSetName,rc->elementSetName))
2187                 continue;
2188             if (strcmp_null(syntax, rc->syntax))
2189                 continue;
2190             /* not destroying rc->npr (it's handled by nmem )*/
2191             rc->rec.npr = npr;
2192             /* keeping wrbuf_marc too */
2193             return;
2194         }
2195     }
2196     rc = (ZOOM_record_cache) odr_malloc(r->odr, sizeof(*rc));
2197     rc->rec.npr = npr;
2198     rc->rec.odr = 0;
2199     rc->rec.wrbuf_marc = 0;
2200     rc->rec.wrbuf_iconv = 0;
2201     rc->rec.wrbuf_opac = 0;
2202     if (elementSetName)
2203         rc->elementSetName = odr_strdup(r->odr, elementSetName);
2204     else
2205         rc->elementSetName = 0;
2206
2207     if (syntax)
2208         rc->syntax = odr_strdup(r->odr, syntax);
2209     else
2210         rc->syntax = 0;
2211
2212     if (r->schema)
2213         rc->schema = odr_strdup(r->odr, r->schema);
2214     else
2215         rc->schema = 0;
2216
2217     rc->pos = pos;
2218     rc->next = r->record_hash[record_hash(pos)];
2219     r->record_hash[record_hash(pos)] = rc;
2220 }
2221
2222 static ZOOM_record record_cache_lookup(ZOOM_resultset r, int pos,
2223                                        const char *syntax,
2224                                        const char *elementSetName)
2225 {
2226     ZOOM_record_cache rc;
2227
2228     for (rc = r->record_hash[record_hash(pos)]; rc; rc = rc->next)
2229     {
2230         if (pos == rc->pos)
2231         {
2232             if (strcmp_null(r->schema, rc->schema))
2233                 continue;
2234             if (strcmp_null(elementSetName,rc->elementSetName))
2235                 continue;
2236             if (strcmp_null(syntax, rc->syntax))
2237                 continue;
2238             return &rc->rec;
2239         }
2240     }
2241     return 0;
2242 }
2243
2244 static void handle_records(ZOOM_connection c, Z_Records *sr,
2245                            int present_phase)
2246 {
2247     ZOOM_resultset resultset;
2248     int *start, *count;
2249     const char *syntax = 0, *elementSetName = 0;
2250
2251     if (!c->tasks)
2252         return ;
2253     switch (c->tasks->which)
2254     {
2255     case ZOOM_TASK_SEARCH:
2256         resultset = c->tasks->u.search.resultset;
2257         start = &c->tasks->u.search.start;
2258         count = &c->tasks->u.search.count;
2259         syntax = c->tasks->u.search.syntax;
2260         elementSetName = c->tasks->u.search.elementSetName;
2261         break;
2262     case ZOOM_TASK_RETRIEVE:
2263         resultset = c->tasks->u.retrieve.resultset;
2264         start = &c->tasks->u.retrieve.start;
2265         count = &c->tasks->u.retrieve.count;
2266         syntax = c->tasks->u.retrieve.syntax;
2267         elementSetName = c->tasks->u.retrieve.elementSetName;
2268         break;
2269     default:
2270         return;
2271     }
2272     if (sr && sr->which == Z_Records_NSD)
2273         response_default_diag(c, sr->u.nonSurrogateDiagnostic);
2274     else if (sr && sr->which == Z_Records_multipleNSD)
2275     {
2276         if (sr->u.multipleNonSurDiagnostics->num_diagRecs >= 1)
2277             response_diag(c, sr->u.multipleNonSurDiagnostics->diagRecs[0]);
2278         else
2279             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2280     }
2281     else
2282     {
2283         if (*count + *start > resultset->size)
2284             *count = resultset->size - *start;
2285         if (*count < 0)
2286             *count = 0;
2287         if (sr && sr->which == Z_Records_DBOSD)
2288         {
2289             int i;
2290             NMEM nmem = odr_extract_mem(c->odr_in);
2291             Z_NamePlusRecordList *p =
2292                 sr->u.databaseOrSurDiagnostics;
2293             for (i = 0; i<p->num_records; i++)
2294             {
2295                 record_cache_add(resultset, p->records[i], i + *start,
2296                                  syntax, elementSetName);
2297             }
2298             *count -= i;
2299             if (*count < 0)
2300                 *count = 0;
2301             *start += i;
2302             yaz_log(log_details,
2303                     "handle_records resultset=%p start=%d count=%d",
2304                     resultset, *start, *count);
2305
2306             /* transfer our response to search_nmem .. we need it later */
2307             nmem_transfer(odr_getmem(resultset->odr), nmem);
2308             nmem_destroy(nmem);
2309             if (present_phase && p->num_records == 0)
2310             {
2311                 /* present response and we didn't get any records! */
2312                 Z_NamePlusRecord *myrec =
2313                     zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2314                 record_cache_add(resultset, myrec, *start,
2315                                  syntax, elementSetName);
2316             }
2317         }
2318         else if (present_phase)
2319         {
2320             /* present response and we didn't get any records! */
2321             Z_NamePlusRecord *myrec =
2322                 zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2323             record_cache_add(resultset, myrec, *start, syntax, elementSetName);
2324         }
2325     }
2326 }
2327
2328 static void handle_present_response(ZOOM_connection c, Z_PresentResponse *pr)
2329 {
2330     handle_records(c, pr->records, 1);
2331 }
2332
2333 static void handle_queryExpressionTerm(ZOOM_options opt, const char *name,
2334                                        Z_Term *term)
2335 {
2336     switch (term->which)
2337     {
2338     case Z_Term_general:
2339         ZOOM_options_setl(opt, name,
2340                           (const char *)(term->u.general->buf),
2341                           term->u.general->len);
2342         break;
2343     case Z_Term_characterString:
2344         ZOOM_options_set(opt, name, term->u.characterString);
2345         break;
2346     case Z_Term_numeric:
2347         ZOOM_options_set_int(opt, name, *term->u.numeric);
2348         break;
2349     }
2350 }
2351
2352 static void handle_queryExpression(ZOOM_options opt, const char *name,
2353                                    Z_QueryExpression *exp)
2354 {
2355     char opt_name[80];
2356
2357     switch (exp->which)
2358     {
2359     case Z_QueryExpression_term:
2360         if (exp->u.term && exp->u.term->queryTerm)
2361         {
2362             sprintf(opt_name, "%s.term", name);
2363             handle_queryExpressionTerm(opt, opt_name, exp->u.term->queryTerm);
2364         }
2365         break;
2366     case Z_QueryExpression_query:
2367         break;
2368     }
2369 }
2370
2371 static void handle_searchResult(ZOOM_connection c, ZOOM_resultset resultset,
2372                                 Z_OtherInformation *o)
2373 {
2374     int i;
2375     for (i = 0; o && i < o->num_elements; i++)
2376     {
2377         if (o->list[i]->which == Z_OtherInfo_externallyDefinedInfo)
2378         {
2379             Z_External *ext = o->list[i]->information.externallyDefinedInfo;
2380
2381             if (ext->which == Z_External_searchResult1)
2382             {
2383                 int j;
2384                 Z_SearchInfoReport *sr = ext->u.searchResult1;
2385
2386                 if (sr->num)
2387                     ZOOM_options_set_int(
2388                         resultset->options, "searchresult.size", sr->num);
2389
2390                 for (j = 0; j < sr->num; j++)
2391                 {
2392                     Z_SearchInfoReport_s *ent =
2393                         ext->u.searchResult1->elements[j];
2394                     char pref[80];
2395
2396                     sprintf(pref, "searchresult.%d", j);
2397
2398                     if (ent->subqueryId)
2399                     {
2400                         char opt_name[80];
2401                         sprintf(opt_name, "%s.id", pref);
2402                         ZOOM_options_set(resultset->options, opt_name,
2403                                          ent->subqueryId);
2404                     }
2405                     if (ent->subqueryExpression)
2406                     {
2407                         char opt_name[80];
2408                         sprintf(opt_name, "%s.subquery", pref);
2409                         handle_queryExpression(resultset->options, opt_name,
2410                                                ent->subqueryExpression);
2411                     }
2412                     if (ent->subqueryInterpretation)
2413                     {
2414                         char opt_name[80];
2415                         sprintf(opt_name, "%s.interpretation", pref);
2416                         handle_queryExpression(resultset->options, opt_name,
2417                                                ent->subqueryInterpretation);
2418                     }
2419                     if (ent->subqueryRecommendation)
2420                     {
2421                         char opt_name[80];
2422                         sprintf(opt_name, "%s.recommendation", pref);
2423                         handle_queryExpression(resultset->options, opt_name,
2424                                                ent->subqueryRecommendation);
2425                     }
2426                     if (ent->subqueryCount)
2427                     {
2428                         char opt_name[80];
2429                         sprintf(opt_name, "%s.count", pref);
2430                         ZOOM_options_set_int(resultset->options, opt_name,
2431                                              *ent->subqueryCount);
2432                     }
2433                 }
2434             }
2435         }
2436     }
2437 }
2438
2439 static void handle_search_response(ZOOM_connection c, Z_SearchResponse *sr)
2440 {
2441     ZOOM_resultset resultset;
2442     ZOOM_Event event;
2443
2444     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
2445         return ;
2446
2447     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
2448     ZOOM_connection_put_event(c, event);
2449
2450     resultset = c->tasks->u.search.resultset;
2451
2452     if (sr->resultSetStatus)
2453     {
2454         ZOOM_options_set_int(resultset->options, "resultSetStatus",
2455                              *sr->resultSetStatus);
2456     }
2457     if (sr->presentStatus)
2458     {
2459         ZOOM_options_set_int(resultset->options, "presentStatus",
2460                              *sr->presentStatus);
2461     }
2462     handle_searchResult(c, resultset, sr->additionalSearchInfo);
2463
2464     resultset->size = *sr->resultCount;
2465     handle_records(c, sr->records, 0);
2466 }
2467
2468 static void sort_response(ZOOM_connection c, Z_SortResponse *res)
2469 {
2470     if (res->diagnostics && res->num_diagnostics > 0)
2471         response_diag(c, res->diagnostics[0]);
2472 }
2473
2474 static int scan_response(ZOOM_connection c, Z_ScanResponse *res)
2475 {
2476     NMEM nmem = odr_extract_mem(c->odr_in);
2477     ZOOM_scanset scan;
2478
2479     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
2480         return 0;
2481     scan = c->tasks->u.scan.scan;
2482
2483     if (res->entries && res->entries->nonsurrogateDiagnostics)
2484         response_diag(c, res->entries->nonsurrogateDiagnostics[0]);
2485     scan->scan_response = res;
2486     scan->srw_scan_response = 0;
2487     nmem_transfer(odr_getmem(scan->odr), nmem);
2488     if (res->stepSize)
2489         ZOOM_options_set_int(scan->options, "stepSize", *res->stepSize);
2490     if (res->positionOfTerm)
2491         ZOOM_options_set_int(scan->options, "position", *res->positionOfTerm);
2492     if (res->scanStatus)
2493         ZOOM_options_set_int(scan->options, "scanStatus", *res->scanStatus);
2494     if (res->numberOfEntriesReturned)
2495         ZOOM_options_set_int(scan->options, "number",
2496                              *res->numberOfEntriesReturned);
2497     nmem_destroy(nmem);
2498     return 1;
2499 }
2500
2501 static zoom_ret send_sort(ZOOM_connection c,
2502                           ZOOM_resultset resultset)
2503 {
2504     if (c->error)
2505         resultset->r_sort_spec = 0;
2506     if (resultset->r_sort_spec)
2507     {
2508         Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_sortRequest);
2509         Z_SortRequest *req = apdu->u.sortRequest;
2510
2511         req->num_inputResultSetNames = 1;
2512         req->inputResultSetNames = (Z_InternationalString **)
2513             odr_malloc(c->odr_out, sizeof(*req->inputResultSetNames));
2514         req->inputResultSetNames[0] =
2515             odr_strdup(c->odr_out, resultset->setname);
2516         req->sortedResultSetName = odr_strdup(c->odr_out, resultset->setname);
2517         req->sortSequence = resultset->r_sort_spec;
2518         resultset->r_sort_spec = 0;
2519         return send_APDU(c, apdu);
2520     }
2521     return zoom_complete;
2522 }
2523
2524 static zoom_ret send_present(ZOOM_connection c)
2525 {
2526     Z_APDU *apdu = 0;
2527     Z_PresentRequest *req = 0;
2528     int i = 0;
2529     const char *syntax = 0;
2530     const char *elementSetName = 0;
2531     ZOOM_resultset  resultset;
2532     int *start, *count;
2533
2534     if (!c->tasks)
2535     {
2536         yaz_log(log_details, "%p send_present no tasks", c);
2537         return zoom_complete;
2538     }
2539
2540     switch (c->tasks->which)
2541     {
2542     case ZOOM_TASK_SEARCH:
2543         resultset = c->tasks->u.search.resultset;
2544         start = &c->tasks->u.search.start;
2545         count = &c->tasks->u.search.count;
2546         syntax = c->tasks->u.search.syntax;
2547         elementSetName = c->tasks->u.search.elementSetName;
2548         break;
2549     case ZOOM_TASK_RETRIEVE:
2550         resultset = c->tasks->u.retrieve.resultset;
2551         start = &c->tasks->u.retrieve.start;
2552         count = &c->tasks->u.retrieve.count;
2553         syntax = c->tasks->u.retrieve.syntax;
2554         elementSetName = c->tasks->u.retrieve.elementSetName;
2555         break;
2556     default:
2557         return zoom_complete;
2558     }
2559     yaz_log(log_details, "%p send_present start=%d count=%d",
2560             c, *start, *count);
2561
2562     if (*start < 0 || *count < 0 || *start + *count > resultset->size)
2563     {
2564         set_dset_error(c, YAZ_BIB1_PRESENT_REQUEST_OUT_OF_RANGE, "Bib-1",
2565                        "", 0);
2566     }
2567     if (c->error)                  /* don't continue on error */
2568         return zoom_complete;
2569     yaz_log(log_details, "send_present resultset=%p start=%d count=%d",
2570             resultset, *start, *count);
2571
2572     for (i = 0; i < *count; i++)
2573     {
2574         ZOOM_record rec =
2575             record_cache_lookup(resultset, i + *start, syntax, elementSetName);
2576         if (!rec)
2577             break;
2578         else
2579         {
2580             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
2581             ZOOM_connection_put_event(c, event);
2582         }
2583     }
2584     *start += i;
2585     *count -= i;
2586
2587     if (*count == 0)
2588     {
2589         yaz_log(log_details, "%p send_present skip=%d no more to fetch", c, i);
2590         return zoom_complete;
2591     }
2592
2593     apdu = zget_APDU(c->odr_out, Z_APDU_presentRequest);
2594     req = apdu->u.presentRequest;
2595
2596     if (i)
2597         yaz_log(log_details, "%p send_present skip=%d", c, i);
2598
2599     *req->resultSetStartPoint = *start + 1;
2600     *req->numberOfRecordsRequested = resultset->step>0 ?
2601         resultset->step : *count;
2602     if (*req->numberOfRecordsRequested + *start > resultset->size)
2603         *req->numberOfRecordsRequested = resultset->size - *start;
2604     assert(*req->numberOfRecordsRequested > 0);
2605
2606     if (syntax && *syntax)
2607         req->preferredRecordSyntax =
2608             zoom_yaz_str_to_z3950oid(c, CLASS_RECSYN, syntax);
2609
2610     if (resultset->schema && *resultset->schema)
2611     {
2612         Z_RecordComposition *compo = (Z_RecordComposition *)
2613             odr_malloc(c->odr_out, sizeof(*compo));
2614
2615         req->recordComposition = compo;
2616         compo->which = Z_RecordComp_complex;
2617         compo->u.complex = (Z_CompSpec *)
2618             odr_malloc(c->odr_out, sizeof(*compo->u.complex));
2619         compo->u.complex->selectAlternativeSyntax = (bool_t *)
2620             odr_malloc(c->odr_out, sizeof(bool_t));
2621         *compo->u.complex->selectAlternativeSyntax = 0;
2622
2623         compo->u.complex->generic = (Z_Specification *)
2624             odr_malloc(c->odr_out, sizeof(*compo->u.complex->generic));
2625
2626         compo->u.complex->generic->which = Z_Schema_oid;
2627         compo->u.complex->generic->schema.oid = (Odr_oid *)
2628             zoom_yaz_str_to_z3950oid (c, CLASS_SCHEMA, resultset->schema);
2629
2630         if (!compo->u.complex->generic->schema.oid)
2631         {
2632             /* OID wasn't a schema! Try record syntax instead. */
2633
2634             compo->u.complex->generic->schema.oid = (Odr_oid *)
2635                 zoom_yaz_str_to_z3950oid (c, CLASS_RECSYN, resultset->schema);
2636         }
2637         if (elementSetName && *elementSetName)
2638         {
2639             compo->u.complex->generic->elementSpec = (Z_ElementSpec *)
2640                 odr_malloc(c->odr_out, sizeof(Z_ElementSpec));
2641             compo->u.complex->generic->elementSpec->which =
2642                 Z_ElementSpec_elementSetName;
2643             compo->u.complex->generic->elementSpec->u.elementSetName =
2644                 odr_strdup(c->odr_out, elementSetName);
2645         }
2646         else
2647             compo->u.complex->generic->elementSpec = 0;
2648         compo->u.complex->num_dbSpecific = 0;
2649         compo->u.complex->dbSpecific = 0;
2650         compo->u.complex->num_recordSyntax = 0;
2651         compo->u.complex->recordSyntax = 0;
2652     }
2653     else if (elementSetName && *elementSetName)
2654     {
2655         Z_ElementSetNames *esn = (Z_ElementSetNames *)
2656             odr_malloc(c->odr_out, sizeof(*esn));
2657         Z_RecordComposition *compo = (Z_RecordComposition *)
2658             odr_malloc(c->odr_out, sizeof(*compo));
2659
2660         esn->which = Z_ElementSetNames_generic;
2661         esn->u.generic = odr_strdup(c->odr_out, elementSetName);
2662         compo->which = Z_RecordComp_simple;
2663         compo->u.simple = esn;
2664         req->recordComposition = compo;
2665     }
2666     req->resultSetId = odr_strdup(c->odr_out, resultset->setname);
2667     return send_APDU(c, apdu);
2668 }
2669
2670 ZOOM_API(ZOOM_scanset)
2671     ZOOM_connection_scan(ZOOM_connection c, const char *start)
2672 {
2673     ZOOM_scanset s;
2674     ZOOM_query q = ZOOM_query_create();
2675
2676     ZOOM_query_prefix(q, start);
2677
2678     s = ZOOM_connection_scan1(c, q);
2679     ZOOM_query_destroy(q);
2680     return s;
2681
2682 }
2683
2684 ZOOM_API(ZOOM_scanset)
2685     ZOOM_connection_scan1(ZOOM_connection c, ZOOM_query q)
2686 {
2687     ZOOM_scanset scan = 0;
2688
2689     if (!q->z_query)
2690         return 0;
2691     scan = (ZOOM_scanset) xmalloc(sizeof(*scan));
2692     scan->connection = c;
2693     scan->odr = odr_createmem(ODR_DECODE);
2694     scan->options = ZOOM_options_create_with_parent(c->options);
2695     scan->refcount = 1;
2696     scan->scan_response = 0;
2697     scan->srw_scan_response = 0;
2698
2699     scan->query = q;
2700     (q->refcount)++;
2701     scan->databaseNames = set_DatabaseNames(c, c->options,
2702                                             &scan->num_databaseNames,
2703                                             scan->odr);
2704
2705     if (1)
2706     {
2707         ZOOM_task task = ZOOM_connection_add_task(c, ZOOM_TASK_SCAN);
2708         task->u.scan.scan = scan;
2709
2710         (scan->refcount)++;
2711         if (!c->async)
2712         {
2713             while (ZOOM_event(1, &c))
2714                 ;
2715         }
2716     }
2717     return scan;
2718 }
2719
2720 ZOOM_API(void)
2721     ZOOM_scanset_destroy(ZOOM_scanset scan)
2722 {
2723     if (!scan)
2724         return;
2725     (scan->refcount)--;
2726     if (scan->refcount == 0)
2727     {
2728         ZOOM_query_destroy(scan->query);
2729
2730         odr_destroy(scan->odr);
2731
2732         ZOOM_options_destroy(scan->options);
2733         xfree(scan);
2734     }
2735 }
2736
2737 static zoom_ret send_package(ZOOM_connection c)
2738 {
2739     ZOOM_Event event;
2740
2741     yaz_log(log_details, "%p send_package", c);
2742     if (!c->tasks)
2743         return zoom_complete;
2744     assert (c->tasks->which == ZOOM_TASK_PACKAGE);
2745
2746     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
2747     ZOOM_connection_put_event(c, event);
2748
2749     c->buf_out = c->tasks->u.package->buf_out;
2750     c->len_out = c->tasks->u.package->len_out;
2751
2752     return do_write(c);
2753 }
2754
2755 static zoom_ret ZOOM_connection_send_scan(ZOOM_connection c)
2756 {
2757     ZOOM_scanset scan;
2758     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_scanRequest);
2759     Z_ScanRequest *req = apdu->u.scanRequest;
2760
2761     yaz_log(log_details, "%p send_scan", c);
2762     if (!c->tasks)
2763         return zoom_complete;
2764     assert (c->tasks->which == ZOOM_TASK_SCAN);
2765     scan = c->tasks->u.scan.scan;
2766
2767     /* Z39.50 scan can only carry RPN */
2768     if (scan->query->z_query->which == Z_Query_type_1 ||
2769         scan->query->z_query->which == Z_Query_type_101)
2770     {
2771         Z_RPNQuery *rpn = scan->query->z_query->u.type_1;
2772         const char *cp = ZOOM_options_get(scan->options, "rpnCharset");
2773         if (cp)
2774         {
2775             yaz_iconv_t cd = yaz_iconv_open(cp, "UTF-8");
2776             if (cd)
2777             {
2778                 rpn = yaz_copy_z_RPNQuery(rpn, c->odr_out);
2779
2780                 yaz_query_charset_convert_rpnquery(
2781                     rpn, c->odr_out, cd);
2782                 yaz_iconv_close(cd);
2783             }
2784         }
2785         req->attributeSet = rpn->attributeSetId;
2786         if (!req->attributeSet)
2787             req->attributeSet = odr_oiddup(c->odr_out, yaz_oid_attset_bib_1);
2788         if (rpn->RPNStructure->which == Z_RPNStructure_simple &&
2789             rpn->RPNStructure->u.simple->which == Z_Operand_APT)
2790         {
2791             req->termListAndStartPoint =
2792                 rpn->RPNStructure->u.simple->u.attributesPlusTerm;
2793         }
2794         else
2795         {
2796             set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
2797             return zoom_complete;
2798         }
2799     }
2800     else
2801     {
2802         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
2803         return zoom_complete;
2804     }
2805
2806     *req->numberOfTermsRequested =
2807         ZOOM_options_get_int(scan->options, "number", 10);
2808
2809     req->preferredPositionInResponse =
2810         odr_intdup(c->odr_out,
2811                    ZOOM_options_get_int(scan->options, "position", 1));
2812
2813     req->stepSize =
2814         odr_intdup(c->odr_out,
2815                    ZOOM_options_get_int(scan->options, "stepSize", 0));
2816
2817     req->databaseNames = scan->databaseNames;
2818     req->num_databaseNames = scan->num_databaseNames;
2819
2820     return send_APDU(c, apdu);
2821 }
2822
2823 #if YAZ_HAVE_XML2
2824 static zoom_ret ZOOM_connection_srw_send_scan(ZOOM_connection c)
2825 {
2826     ZOOM_scanset scan;
2827     Z_SRW_PDU *sr = 0;
2828     const char *option_val = 0;
2829
2830     if (!c->tasks)
2831         return zoom_complete;
2832     assert (c->tasks->which == ZOOM_TASK_SCAN);
2833     scan = c->tasks->u.scan.scan;
2834
2835     sr = yaz_srw_get(c->odr_out, Z_SRW_scan_request);
2836
2837     /* SRU scan can only carry CQL and PQF */
2838     if (scan->query->z_query->which == Z_Query_type_104)
2839     {
2840         sr->u.scan_request->query_type = Z_SRW_query_type_cql;
2841         sr->u.scan_request->scanClause.cql = scan->query->query_string;
2842     }
2843     else if (scan->query->z_query->which == Z_Query_type_1
2844              || scan->query->z_query->which == Z_Query_type_101)
2845     {
2846         sr->u.scan_request->query_type = Z_SRW_query_type_pqf;
2847         sr->u.scan_request->scanClause.pqf = scan->query->query_string;
2848     }
2849     else
2850     {
2851         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
2852         return zoom_complete;
2853     }
2854
2855     sr->u.scan_request->maximumTerms = odr_intdup(
2856         c->odr_out, ZOOM_options_get_int(scan->options, "number", 10));
2857
2858     sr->u.scan_request->responsePosition = odr_intdup(
2859         c->odr_out, ZOOM_options_get_int(scan->options, "position", 1));
2860
2861     option_val = ZOOM_options_get(scan->options, "extraArgs");
2862     if (option_val)
2863         sr->extra_args = odr_strdup(c->odr_out, option_val);
2864     return send_srw(c, sr);
2865 }
2866 #else
2867 static zoom_ret ZOOM_connection_srw_send_scan(ZOOM_connection c)
2868 {
2869     return zoom_complete;
2870 }
2871 #endif
2872
2873
2874 ZOOM_API(size_t)
2875     ZOOM_scanset_size(ZOOM_scanset scan)
2876 {
2877     if (!scan)
2878         return 0;
2879
2880     if (scan->scan_response && scan->scan_response->entries)
2881         return scan->scan_response->entries->num_entries;
2882     else if (scan->srw_scan_response)
2883         return scan->srw_scan_response->num_terms;
2884     return 0;
2885 }
2886
2887 static void ZOOM_scanset_term_x(ZOOM_scanset scan, size_t pos,
2888                                 int *occ,
2889                                 const char **value_term, size_t *value_len,
2890                                 const char **disp_term, size_t *disp_len)
2891 {
2892     size_t noent = ZOOM_scanset_size(scan);
2893
2894     *value_term = 0;
2895     *value_len = 0;
2896
2897     *disp_term = 0;
2898     *disp_len = 0;
2899
2900     *occ = 0;
2901     if (pos >= noent || pos < 0)
2902         return;
2903     if (scan->scan_response)
2904     {
2905         Z_ScanResponse *res = scan->scan_response;
2906         if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2907         {
2908             Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2909
2910             *value_term = (const char *) t->term->u.general->buf;
2911             *value_len = t->term->u.general->len;
2912             if (t->displayTerm)
2913             {
2914                 *disp_term = t->displayTerm;
2915                 *disp_len = strlen(*disp_term);
2916             }
2917             else if (t->term->which == Z_Term_general)
2918             {
2919                 *disp_term = (const char *) t->term->u.general->buf;
2920                 *disp_len = t->term->u.general->len;
2921             }
2922             *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2923         }
2924     }
2925     if (scan->srw_scan_response)
2926     {
2927         Z_SRW_scanResponse *res = scan->srw_scan_response;
2928         Z_SRW_scanTerm *t = res->terms + pos;
2929         if (t)
2930         {
2931             *value_term = t->value;
2932             *value_len = strlen(*value_term);
2933
2934             if (t->displayTerm)
2935                 *disp_term = t->displayTerm;
2936             else
2937                 *disp_term = t->value;
2938             *disp_len = strlen(*disp_term);
2939             *occ = t->numberOfRecords ? *t->numberOfRecords : 0;
2940         }
2941     }
2942 }
2943
2944 ZOOM_API(const char *)
2945     ZOOM_scanset_term(ZOOM_scanset scan, size_t pos,
2946                       int *occ, int *len)
2947 {
2948     const char *value_term = 0;
2949     size_t value_len = 0;
2950     const char *disp_term = 0;
2951     size_t disp_len = 0;
2952
2953     ZOOM_scanset_term_x(scan, pos, occ, &value_term, &value_len,
2954                         &disp_term, &disp_len);
2955
2956     *len = value_len;
2957     return value_term;
2958 }
2959
2960 ZOOM_API(const char *)
2961     ZOOM_scanset_display_term(ZOOM_scanset scan, size_t pos,
2962                               int *occ, int *len)
2963 {
2964     const char *value_term = 0;
2965     size_t value_len = 0;
2966     const char *disp_term = 0;
2967     size_t disp_len = 0;
2968
2969     ZOOM_scanset_term_x(scan, pos, occ, &value_term, &value_len,
2970                         &disp_term, &disp_len);
2971
2972     *len = disp_len;
2973     return disp_term;
2974 }
2975
2976 ZOOM_API(const char *)
2977     ZOOM_scanset_option_get(ZOOM_scanset scan, const char *key)
2978 {
2979     return ZOOM_options_get(scan->options, key);
2980 }
2981
2982 ZOOM_API(void)
2983     ZOOM_scanset_option_set(ZOOM_scanset scan, const char *key,
2984                             const char *val)
2985 {
2986     ZOOM_options_set(scan->options, key, val);
2987 }
2988
2989 static Z_APDU *create_es_package(ZOOM_package p, const Odr_oid *oid)
2990 {
2991     const char *str;
2992     Z_APDU *apdu = zget_APDU(p->odr_out, Z_APDU_extendedServicesRequest);
2993     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2994
2995     str = ZOOM_options_get(p->options, "package-name");
2996     if (str && *str)
2997         req->packageName = odr_strdup(p->odr_out, str);
2998
2999     str = ZOOM_options_get(p->options, "user-id");
3000     if (str)
3001         req->userId = odr_strdup(p->odr_out, str);
3002
3003     req->packageType = odr_oiddup(p->odr_out, oid);
3004
3005     str = ZOOM_options_get(p->options, "function");
3006     if (str)
3007     {
3008         if (!strcmp (str, "create"))
3009             *req->function = Z_ExtendedServicesRequest_create;
3010         if (!strcmp (str, "delete"))
3011             *req->function = Z_ExtendedServicesRequest_delete;
3012         if (!strcmp (str, "modify"))
3013             *req->function = Z_ExtendedServicesRequest_modify;
3014     }
3015
3016     str = ZOOM_options_get(p->options, "waitAction");
3017     if (str)
3018     {
3019         if (!strcmp (str, "wait"))
3020             *req->waitAction = Z_ExtendedServicesRequest_wait;
3021         if (!strcmp (str, "waitIfPossible"))
3022             *req->waitAction = Z_ExtendedServicesRequest_waitIfPossible;
3023         if (!strcmp (str, "dontWait"))
3024             *req->waitAction = Z_ExtendedServicesRequest_dontWait;
3025         if (!strcmp (str, "dontReturnPackage"))
3026             *req->waitAction = Z_ExtendedServicesRequest_dontReturnPackage;
3027     }
3028     return apdu;
3029 }
3030
3031 static const char *ill_array_lookup(void *clientData, const char *idx)
3032 {
3033     ZOOM_package p = (ZOOM_package) clientData;
3034     return ZOOM_options_get(p->options, idx+4);
3035 }
3036
3037 static Z_External *encode_ill_request(ZOOM_package p)
3038 {
3039     ODR out = p->odr_out;
3040     ILL_Request *req;
3041     Z_External *r = 0;
3042     struct ill_get_ctl ctl;
3043
3044     ctl.odr = p->odr_out;
3045     ctl.clientData = p;
3046     ctl.f = ill_array_lookup;
3047
3048     req = ill_get_ILLRequest(&ctl, "ill", 0);
3049
3050     if (!ill_Request(out, &req, 0, 0))
3051     {
3052         int ill_request_size;
3053         char *ill_request_buf = odr_getbuf(out, &ill_request_size, 0);
3054         if (ill_request_buf)
3055             odr_setbuf(out, ill_request_buf, ill_request_size, 1);
3056         return 0;
3057     }
3058     else
3059     {
3060         int illRequest_size = 0;
3061         char *illRequest_buf = odr_getbuf(out, &illRequest_size, 0);
3062
3063         r = (Z_External *) odr_malloc(out, sizeof(*r));
3064         r->direct_reference = odr_oiddup(out, yaz_oid_general_isoill_1);
3065         r->indirect_reference = 0;
3066         r->descriptor = 0;
3067         r->which = Z_External_single;
3068
3069         r->u.single_ASN1_type =
3070             odr_create_Odr_oct(out,
3071                                (unsigned char *)illRequest_buf,
3072                                illRequest_size);
3073     }
3074     return r;
3075 }
3076
3077 static Z_ItemOrder *encode_item_order(ZOOM_package p)
3078 {
3079     Z_ItemOrder *req = (Z_ItemOrder *) odr_malloc(p->odr_out, sizeof(*req));
3080     const char *str;
3081
3082     req->which = Z_IOItemOrder_esRequest;
3083     req->u.esRequest = (Z_IORequest *)
3084         odr_malloc(p->odr_out,sizeof(Z_IORequest));
3085
3086     /* to keep part ... */
3087     req->u.esRequest->toKeep = (Z_IOOriginPartToKeep *)
3088         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartToKeep));
3089     req->u.esRequest->toKeep->supplDescription = 0;
3090     req->u.esRequest->toKeep->contact = (Z_IOContact *)
3091         odr_malloc(p->odr_out, sizeof(*req->u.esRequest->toKeep->contact));
3092
3093     str = ZOOM_options_get(p->options, "contact-name");
3094     req->u.esRequest->toKeep->contact->name = str ?
3095         odr_strdup(p->odr_out, str) : 0;
3096
3097     str = ZOOM_options_get(p->options, "contact-phone");
3098     req->u.esRequest->toKeep->contact->phone = str ?
3099         odr_strdup(p->odr_out, str) : 0;
3100
3101     str = ZOOM_options_get(p->options, "contact-email");
3102     req->u.esRequest->toKeep->contact->email = str ?
3103         odr_strdup(p->odr_out, str) : 0;
3104
3105     req->u.esRequest->toKeep->addlBilling = 0;
3106
3107     /* not to keep part ... */
3108     req->u.esRequest->notToKeep = (Z_IOOriginPartNotToKeep *)
3109         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartNotToKeep));
3110
3111     str = ZOOM_options_get(p->options, "itemorder-setname");
3112     if (!str)
3113         str = "default";
3114
3115     if (!*str)
3116         req->u.esRequest->notToKeep->resultSetItem = 0;
3117     else
3118     {
3119         req->u.esRequest->notToKeep->resultSetItem = (Z_IOResultSetItem *)
3120             odr_malloc(p->odr_out, sizeof(Z_IOResultSetItem));
3121
3122         req->u.esRequest->notToKeep->resultSetItem->resultSetId =
3123             odr_strdup(p->odr_out, str);
3124         req->u.esRequest->notToKeep->resultSetItem->item =
3125             (int *) odr_malloc(p->odr_out, sizeof(int));
3126
3127         str = ZOOM_options_get(p->options, "itemorder-item");
3128         *req->u.esRequest->notToKeep->resultSetItem->item =
3129             (str ? atoi(str) : 1);
3130     }
3131
3132     str = ZOOM_options_get(p->options, "doc");
3133     if (str)
3134     {
3135         req->u.esRequest->notToKeep->itemRequest =
3136             z_ext_record_xml(p->odr_out, str, strlen(str));
3137     }
3138     else
3139         req->u.esRequest->notToKeep->itemRequest = encode_ill_request(p);
3140
3141     return req;
3142 }
3143
3144 Z_APDU *create_admin_package(ZOOM_package p, int type,
3145                              Z_ESAdminOriginPartToKeep **toKeepP,
3146                              Z_ESAdminOriginPartNotToKeep **notToKeepP)
3147 {
3148     Z_APDU *apdu = create_es_package(p, yaz_oid_extserv_admin);
3149     if (apdu)
3150     {
3151         Z_ESAdminOriginPartToKeep  *toKeep;
3152         Z_ESAdminOriginPartNotToKeep  *notToKeep;
3153         Z_External *r = (Z_External *) odr_malloc(p->odr_out, sizeof(*r));
3154         const char *first_db = "Default";
3155         int num_db;
3156         char **db = set_DatabaseNames(p->connection, p->options, &num_db,
3157                                       p->odr_out);
3158         if (num_db > 0)
3159             first_db = db[0];
3160
3161         r->direct_reference = odr_oiddup(p->odr_out, yaz_oid_extserv_admin);
3162         r->descriptor = 0;
3163         r->indirect_reference = 0;
3164         r->which = Z_External_ESAdmin;
3165
3166         r->u.adminService = (Z_Admin *)
3167             odr_malloc(p->odr_out, sizeof(*r->u.adminService));
3168         r->u.adminService->which = Z_Admin_esRequest;
3169         r->u.adminService->u.esRequest = (Z_AdminEsRequest *)
3170             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest));
3171
3172         toKeep = r->u.adminService->u.esRequest->toKeep =
3173             (Z_ESAdminOriginPartToKeep *)
3174             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest->toKeep));
3175         toKeep->which = type;
3176         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
3177         toKeep->u.create = odr_nullval();
3178         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3179
3180         r->u.adminService->u.esRequest->notToKeep = notToKeep =
3181             (Z_ESAdminOriginPartNotToKeep *)
3182             odr_malloc(p->odr_out,
3183                        sizeof(*r->u.adminService->u.esRequest->notToKeep));
3184         notToKeep->which = Z_ESAdminOriginPartNotToKeep_recordsWillFollow;
3185         notToKeep->u.recordsWillFollow = odr_nullval();
3186         if (toKeepP)
3187             *toKeepP = toKeep;
3188         if (notToKeepP)
3189             *notToKeepP = notToKeep;
3190     }
3191     return apdu;
3192 }
3193
3194 static Z_APDU *create_xmlupdate_package(ZOOM_package p)
3195 {
3196     Z_APDU *apdu = create_es_package(p, yaz_oid_extserv_xml_es);
3197     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
3198     Z_External *ext = (Z_External *) odr_malloc(p->odr_out, sizeof(*ext));
3199     const char *doc = ZOOM_options_get(p->options, "doc");
3200
3201     if (!doc)
3202         doc = "";
3203
3204     req->taskSpecificParameters = ext;
3205     ext->direct_reference = req->packageType;
3206     ext->descriptor = 0;
3207     ext->indirect_reference = 0;
3208
3209     ext->which = Z_External_octet;
3210     ext->u.single_ASN1_type =
3211         odr_create_Odr_oct(p->odr_out, (const unsigned char *) doc,
3212                            strlen(doc));
3213     return apdu;
3214 }
3215
3216 static Z_APDU *create_update_package(ZOOM_package p)
3217 {
3218     Z_APDU *apdu = 0;
3219     const char *first_db = "Default";
3220     int num_db;
3221     char **db = set_DatabaseNames(p->connection, p->options, &num_db, p->odr_out);
3222     const char *action = ZOOM_options_get(p->options, "action");
3223     const char *recordIdOpaque = ZOOM_options_get(p->options, "recordIdOpaque");
3224     const char *recordIdNumber = ZOOM_options_get(p->options, "recordIdNumber");
3225     const char *record_buf = ZOOM_options_get(p->options, "record");
3226     const char *syntax_str = ZOOM_options_get(p->options, "syntax");
3227     const char *version = ZOOM_options_get(p->options, "updateVersion");
3228
3229     const char *correlationInfo_note =
3230         ZOOM_options_get(p->options, "correlationInfo.note");
3231     const char *correlationInfo_id =
3232         ZOOM_options_get(p->options, "correlationInfo.id");
3233     int action_no = -1;
3234     Odr_oid *syntax_oid = 0;
3235     const Odr_oid *package_oid = yaz_oid_extserv_database_update;
3236
3237     if (!version)
3238         version = "3";
3239     if (!syntax_str)
3240         syntax_str = "xml";
3241     if (!record_buf)
3242     {
3243         record_buf = "void";
3244         syntax_str = "SUTRS";
3245     }
3246
3247     if (syntax_str)
3248     {
3249         syntax_oid = yaz_string_to_oid_odr(yaz_oid_std(),
3250                                            CLASS_RECSYN, syntax_str,
3251                                            p->odr_out);
3252     }
3253     if (!syntax_oid)
3254         return 0;
3255
3256     if (num_db > 0)
3257         first_db = db[0];
3258
3259     switch(*version)
3260     {
3261     case '1':
3262         package_oid = yaz_oid_extserv_database_update_first_version;
3263         /* old update does not support specialUpdate */
3264         if (!action)
3265             action = "recordInsert";
3266         break;
3267     case '2':
3268         if (!action)
3269             action = "specialUpdate";
3270         package_oid = yaz_oid_extserv_database_update_second_version;
3271         break;
3272     case '3':
3273         if (!action)
3274             action = "specialUpdate";
3275         package_oid = yaz_oid_extserv_database_update;
3276         break;
3277     default:
3278         return 0;
3279     }
3280
3281     if (!strcmp(action, "recordInsert"))
3282         action_no = Z_IUOriginPartToKeep_recordInsert;
3283     else if (!strcmp(action, "recordReplace"))
3284         action_no = Z_IUOriginPartToKeep_recordReplace;
3285     else if (!strcmp(action, "recordDelete"))
3286         action_no = Z_IUOriginPartToKeep_recordDelete;
3287     else if (!strcmp(action, "elementUpdate"))
3288         action_no = Z_IUOriginPartToKeep_elementUpdate;
3289     else if (!strcmp(action, "specialUpdate"))
3290         action_no = Z_IUOriginPartToKeep_specialUpdate;
3291     else
3292         return 0;
3293
3294     apdu = create_es_package(p, package_oid);
3295     if (apdu)
3296     {
3297         Z_IUOriginPartToKeep *toKeep;
3298         Z_IUSuppliedRecords *notToKeep;
3299         Z_External *r = (Z_External *)
3300             odr_malloc(p->odr_out, sizeof(*r));
3301         const char *elementSetName =
3302             ZOOM_options_get(p->options, "elementSetName");
3303
3304         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3305
3306         r->direct_reference = odr_oiddup(p->odr_out, package_oid);
3307         r->descriptor = 0;
3308         r->which = Z_External_update;
3309         r->indirect_reference = 0;
3310         r->u.update = (Z_IUUpdate *)
3311             odr_malloc(p->odr_out, sizeof(*r->u.update));
3312
3313         r->u.update->which = Z_IUUpdate_esRequest;
3314         r->u.update->u.esRequest = (Z_IUUpdateEsRequest *)
3315             odr_malloc(p->odr_out, sizeof(*r->u.update->u.esRequest));
3316         toKeep = r->u.update->u.esRequest->toKeep =
3317             (Z_IUOriginPartToKeep *)
3318             odr_malloc(p->odr_out, sizeof(*toKeep));
3319
3320         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
3321         toKeep->schema = 0;
3322
3323         toKeep->elementSetName = 0;
3324         if (elementSetName)
3325             toKeep->elementSetName = odr_strdup(p->odr_out, elementSetName);
3326
3327         toKeep->actionQualifier = 0;
3328         toKeep->action = odr_intdup(p->odr_out, action_no);
3329
3330         notToKeep = r->u.update->u.esRequest->notToKeep =
3331             (Z_IUSuppliedRecords *)
3332             odr_malloc(p->odr_out, sizeof(*notToKeep));
3333         notToKeep->num = 1;
3334         notToKeep->elements = (Z_IUSuppliedRecords_elem **)
3335             odr_malloc(p->odr_out, sizeof(*notToKeep->elements));
3336         notToKeep->elements[0] = (Z_IUSuppliedRecords_elem *)
3337             odr_malloc(p->odr_out, sizeof(**notToKeep->elements));
3338         notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_opaque;
3339         if (recordIdOpaque)
3340         {
3341             notToKeep->elements[0]->u.opaque =
3342                 odr_create_Odr_oct(p->odr_out,
3343                                    (const unsigned char *) recordIdOpaque,
3344                                    strlen(recordIdOpaque));
3345         }
3346         else if (recordIdNumber)
3347         {
3348             notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_number;
3349
3350             notToKeep->elements[0]->u.number =
3351                 odr_intdup(p->odr_out, atoi(recordIdNumber));
3352         }
3353         else
3354             notToKeep->elements[0]->u.opaque = 0;
3355         notToKeep->elements[0]->supplementalId = 0;
3356         if (correlationInfo_note || correlationInfo_id)
3357         {
3358             Z_IUCorrelationInfo *ci;
3359             ci = notToKeep->elements[0]->correlationInfo =
3360                 odr_malloc(p->odr_out, sizeof(*ci));
3361             ci->note = correlationInfo_note ?
3362                 odr_strdup(p->odr_out, correlationInfo_note) : 0;
3363             ci->id = correlationInfo_id ?
3364                 odr_intdup(p->odr_out, atoi(correlationInfo_id)) : 0;
3365         }
3366         else
3367             notToKeep->elements[0]->correlationInfo = 0;
3368         notToKeep->elements[0]->record =
3369             z_ext_record_oid(p->odr_out, syntax_oid,
3370                              record_buf, strlen(record_buf));
3371     }
3372     if (0 && apdu)
3373     {
3374         ODR print = odr_createmem(ODR_PRINT);
3375
3376         z_APDU(print, &apdu, 0, 0);
3377         odr_destroy(print);
3378     }
3379     return apdu;
3380 }
3381
3382 ZOOM_API(void)
3383     ZOOM_package_send(ZOOM_package p, const char *type)
3384 {
3385     Z_APDU *apdu = 0;
3386     ZOOM_connection c;
3387     if (!p)
3388         return;
3389     c = p->connection;
3390     odr_reset(p->odr_out);
3391     xfree(p->buf_out);
3392     p->buf_out = 0;
3393     if (!strcmp(type, "itemorder"))
3394     {
3395         apdu = create_es_package(p, yaz_oid_extserv_item_order);
3396         if (apdu)
3397         {
3398             Z_External *r = (Z_External *) odr_malloc(p->odr_out, sizeof(*r));
3399
3400             r->direct_reference =
3401                 odr_oiddup(p->odr_out, yaz_oid_extserv_item_order);
3402             r->descriptor = 0;
3403             r->which = Z_External_itemOrder;
3404             r->indirect_reference = 0;
3405             r->u.itemOrder = encode_item_order(p);
3406
3407             apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3408         }
3409     }
3410     else if (!strcmp(type, "create"))  /* create database */
3411     {
3412         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_create,
3413                                     0, 0);
3414     }
3415     else if (!strcmp(type, "drop"))  /* drop database */
3416     {
3417         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_drop,
3418                                     0, 0);
3419     }
3420     else if (!strcmp(type, "commit"))  /* commit changes */
3421     {
3422         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_commit,
3423                                     0, 0);
3424     }
3425     else if (!strcmp(type, "update")) /* update record(s) */
3426     {
3427         apdu = create_update_package(p);
3428     }
3429     else if (!strcmp(type, "xmlupdate"))
3430     {
3431         apdu = create_xmlupdate_package(p);
3432     }
3433     if (apdu)
3434     {
3435         if (encode_APDU(p->connection, apdu, p->odr_out) == 0)
3436         {
3437             char *buf;
3438
3439             ZOOM_task task = ZOOM_connection_add_task(c, ZOOM_TASK_PACKAGE);
3440             task->u.package = p;
3441             buf = odr_getbuf(p->odr_out, &p->len_out, 0);
3442             p->buf_out = (char *) xmalloc(p->len_out);
3443             memcpy(p->buf_out, buf, p->len_out);
3444
3445             (p->refcount)++;
3446             if (!c->async)
3447             {
3448                 while (ZOOM_event(1, &c))
3449                     ;
3450             }
3451         }
3452     }
3453 }
3454
3455 ZOOM_API(ZOOM_package)
3456     ZOOM_connection_package(ZOOM_connection c, ZOOM_options options)
3457 {
3458     ZOOM_package p = (ZOOM_package) xmalloc(sizeof(*p));
3459
3460     p->connection = c;
3461     p->odr_out = odr_createmem(ODR_ENCODE);
3462     p->options = ZOOM_options_create_with_parent2(options, c->options);
3463     p->refcount = 1;
3464     p->buf_out = 0;
3465     p->len_out = 0;
3466     return p;
3467 }
3468
3469 ZOOM_API(void)
3470     ZOOM_package_destroy(ZOOM_package p)
3471 {
3472     if (!p)
3473         return;
3474     (p->refcount)--;
3475     if (p->refcount == 0)
3476     {
3477         odr_destroy(p->odr_out);
3478         xfree(p->buf_out);
3479
3480         ZOOM_options_destroy(p->options);
3481         xfree(p);
3482     }
3483 }
3484
3485 ZOOM_API(const char *)
3486     ZOOM_package_option_get(ZOOM_package p, const char *key)
3487 {
3488     return ZOOM_options_get(p->options, key);
3489 }
3490
3491
3492 ZOOM_API(void)
3493     ZOOM_package_option_set(ZOOM_package p, const char *key,
3494                             const char *val)
3495 {
3496     ZOOM_options_set(p->options, key, val);
3497 }
3498
3499 static int ZOOM_connection_exec_task(ZOOM_connection c)
3500 {
3501     ZOOM_task task = c->tasks;
3502     zoom_ret ret = zoom_complete;
3503
3504     if (!task)
3505         return 0;
3506     yaz_log(log_details, "%p ZOOM_connection_exec_task type=%d run=%d",
3507             c, task->which, task->running);
3508     if (c->error != ZOOM_ERROR_NONE)
3509     {
3510         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3511                 "removing tasks because of error = %d", c, c->error);
3512         ZOOM_connection_remove_tasks(c);
3513         return 0;
3514     }
3515     if (task->running)
3516     {
3517         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3518                 "task already running", c);
3519         return 0;
3520     }
3521     task->running = 1;
3522     ret = zoom_complete;
3523     if (c->cs || task->which == ZOOM_TASK_CONNECT)
3524     {
3525         switch (task->which)
3526         {
3527         case ZOOM_TASK_SEARCH:
3528             if (c->proto == PROTO_HTTP)
3529                 ret = ZOOM_connection_srw_send_search(c);
3530             else
3531                 ret = ZOOM_connection_send_search(c);
3532             break;
3533         case ZOOM_TASK_RETRIEVE:
3534             if (c->proto == PROTO_HTTP)
3535                 ret = ZOOM_connection_srw_send_search(c);
3536             else
3537                 ret = send_present(c);
3538             break;
3539         case ZOOM_TASK_CONNECT:
3540             ret = do_connect(c);
3541             break;
3542         case ZOOM_TASK_SCAN:
3543             if (c->proto == PROTO_HTTP)
3544                 ret = ZOOM_connection_srw_send_scan(c);
3545             else
3546                 ret = ZOOM_connection_send_scan(c);
3547             break;
3548         case ZOOM_TASK_PACKAGE:
3549             ret = send_package(c);
3550             break;
3551         case ZOOM_TASK_SORT:
3552             c->tasks->u.sort.resultset->r_sort_spec =
3553                 c->tasks->u.sort.q->sort_spec;
3554             ret = send_sort(c, c->tasks->u.sort.resultset);
3555             break;
3556         }
3557     }
3558     else
3559     {
3560         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3561                 "remove tasks because no connection exist", c);
3562         ZOOM_connection_remove_tasks(c);
3563     }
3564     if (ret == zoom_complete)
3565     {
3566         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3567                 "task removed (complete)", c);
3568         ZOOM_connection_remove_task(c);
3569         return 0;
3570     }
3571     yaz_log(log_details, "%p ZOOM_connection_exec_task "
3572             "task pending", c);
3573     return 1;
3574 }
3575
3576 static zoom_ret send_sort_present(ZOOM_connection c)
3577 {
3578     zoom_ret r = zoom_complete;
3579
3580     if (c->tasks && c->tasks->which == ZOOM_TASK_SEARCH)
3581         r = send_sort(c, c->tasks->u.search.resultset);
3582     if (r == zoom_complete)
3583         r = send_present(c);
3584     return r;
3585 }
3586
3587 static int es_response(ZOOM_connection c,
3588                        Z_ExtendedServicesResponse *res)
3589 {
3590     if (!c->tasks || c->tasks->which != ZOOM_TASK_PACKAGE)
3591         return 0;
3592     if (res->diagnostics && res->num_diagnostics > 0)
3593         response_diag(c, res->diagnostics[0]);
3594     if (res->taskPackage &&
3595         res->taskPackage->which == Z_External_extendedService)
3596     {
3597         Z_TaskPackage *taskPackage = res->taskPackage->u.extendedService;
3598         Odr_oct *id = taskPackage->targetReference;
3599
3600         if (id)
3601             ZOOM_options_setl(c->tasks->u.package->options,
3602                               "targetReference", (char*) id->buf, id->len);
3603     }
3604     if (res->taskPackage &&
3605         res->taskPackage->which == Z_External_octet)
3606     {
3607         Odr_oct *doc = res->taskPackage->u.octet_aligned;
3608         ZOOM_options_setl(c->tasks->u.package->options,
3609                           "xmlUpdateDoc", (char*) doc->buf, doc->len);
3610     }
3611     return 1;
3612 }
3613
3614 static void interpret_init_diag(ZOOM_connection c,
3615                                 Z_DiagnosticFormat *diag)
3616 {
3617     if (diag->num > 0)
3618     {
3619         Z_DiagnosticFormat_s *ds = diag->elements[0];
3620         if (ds->which == Z_DiagnosticFormat_s_defaultDiagRec)
3621             response_default_diag(c, ds->u.defaultDiagRec);
3622     }
3623 }
3624
3625
3626 static void interpret_otherinformation_field(ZOOM_connection c,
3627                                              Z_OtherInformation *ui)
3628 {
3629     int i;
3630     for (i = 0; i < ui->num_elements; i++)
3631     {
3632         Z_OtherInformationUnit *unit = ui->list[i];
3633         if (unit->which == Z_OtherInfo_externallyDefinedInfo &&
3634             unit->information.externallyDefinedInfo &&
3635             unit->information.externallyDefinedInfo->which ==
3636             Z_External_diag1)
3637         {
3638             interpret_init_diag(c, unit->information.externallyDefinedInfo->u.diag1);
3639         }
3640     }
3641 }
3642
3643
3644 static void set_init_option(const char *name, void *clientData) {
3645     ZOOM_connection c = (ZOOM_connection) clientData;
3646     char buf[80];
3647
3648     sprintf(buf, "init_opt_%.70s", name);
3649     ZOOM_connection_option_set(c, buf, "1");
3650 }
3651
3652
3653 static void recv_apdu(ZOOM_connection c, Z_APDU *apdu)
3654 {
3655     Z_InitResponse *initrs;
3656
3657     ZOOM_connection_set_mask(c, 0);
3658     yaz_log(log_details, "%p recv_apdu apdu->which=%d", c, apdu->which);
3659     switch(apdu->which)
3660     {
3661     case Z_APDU_initResponse:
3662         yaz_log(log_api, "%p recv_apdu: Received Init response", c);
3663         initrs = apdu->u.initResponse;
3664         ZOOM_connection_option_set(c, "serverImplementationId",
3665                                    initrs->implementationId ?
3666                                    initrs->implementationId : "");
3667         ZOOM_connection_option_set(c, "serverImplementationName",
3668                                    initrs->implementationName ?
3669                                    initrs->implementationName : "");
3670         ZOOM_connection_option_set(c, "serverImplementationVersion",
3671                                    initrs->implementationVersion ?
3672                                    initrs->implementationVersion : "");
3673         /* Set the three old options too, for old applications */
3674         ZOOM_connection_option_set(c, "targetImplementationId",
3675                                    initrs->implementationId ?
3676                                    initrs->implementationId : "");
3677         ZOOM_connection_option_set(c, "targetImplementationName",
3678                                    initrs->implementationName ?
3679                                    initrs->implementationName : "");
3680         ZOOM_connection_option_set(c, "targetImplementationVersion",
3681                                    initrs->implementationVersion ?
3682                                    initrs->implementationVersion : "");
3683
3684         /* Make initrs->options available as ZOOM-level options */
3685         yaz_init_opt_decode(initrs->options, set_init_option, (void*) c);
3686
3687         if (!*initrs->result)
3688         {
3689             Z_External *uif = initrs->userInformationField;
3690
3691             set_ZOOM_error(c, ZOOM_ERROR_INIT, 0); /* default error */
3692
3693             if (uif && uif->which == Z_External_userInfo1)
3694                 interpret_otherinformation_field(c, uif->u.userInfo1);
3695         }
3696         else
3697         {
3698             char *cookie =
3699                 yaz_oi_get_string_oid(&apdu->u.initResponse->otherInfo,
3700                                       yaz_oid_userinfo_cookie, 1, 0);
3701             xfree(c->cookie_in);
3702             c->cookie_in = 0;
3703             if (cookie)
3704                 c->cookie_in = xstrdup(cookie);
3705             if (ODR_MASK_GET(initrs->options, Z_Options_namedResultSets) &&
3706                 ODR_MASK_GET(initrs->protocolVersion, Z_ProtocolVersion_3))
3707                 c->support_named_resultsets = 1;
3708             if (c->tasks)
3709             {
3710                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
3711                 ZOOM_connection_remove_task(c);
3712             }
3713             ZOOM_connection_exec_task(c);
3714         }
3715         if (ODR_MASK_GET(initrs->options, Z_Options_negotiationModel))
3716         {
3717             NMEM tmpmem = nmem_create();
3718             Z_CharSetandLanguageNegotiation *p =
3719                 yaz_get_charneg_record(initrs->otherInfo);
3720
3721             if (p)
3722             {
3723                 char *charset = NULL, *lang = NULL;
3724                 int sel;
3725
3726                 yaz_get_response_charneg(tmpmem, p, &charset, &lang, &sel);
3727                 yaz_log(log_details, "%p recv_apdu target accepted: "
3728                         "charset %s, language %s, select %d",
3729                         c,
3730                         charset ? charset : "none", lang ? lang : "none", sel);
3731                 if (charset)
3732                     ZOOM_connection_option_set(c, "negotiation-charset",
3733                                                charset);
3734                 if (lang)
3735                     ZOOM_connection_option_set(c, "negotiation-lang",
3736                                                lang);
3737
3738                 ZOOM_connection_option_set(
3739                     c,  "negotiation-charset-in-effect-for-records",
3740                     (sel != 0) ? "1" : "0");
3741                 nmem_destroy(tmpmem);
3742             }
3743         }
3744         break;
3745     case Z_APDU_searchResponse:
3746         yaz_log(log_api, "%p recv_apdu Search response", c);
3747         handle_search_response(c, apdu->u.searchResponse);
3748         if (send_sort_present(c) == zoom_complete)
3749             ZOOM_connection_remove_task(c);
3750         break;
3751     case Z_APDU_presentResponse:
3752         yaz_log(log_api, "%p recv_apdu Present response", c);
3753         handle_present_response(c, apdu->u.presentResponse);
3754         if (send_present(c) == zoom_complete)
3755             ZOOM_connection_remove_task(c);
3756         break;
3757     case Z_APDU_sortResponse:
3758         yaz_log(log_api, "%p recv_apdu Sort response", c);
3759         sort_response(c, apdu->u.sortResponse);
3760         if (send_present(c) == zoom_complete)
3761             ZOOM_connection_remove_task(c);
3762         break;
3763     case Z_APDU_scanResponse:
3764         yaz_log(log_api, "%p recv_apdu Scan response", c);
3765         scan_response(c, apdu->u.scanResponse);
3766         ZOOM_connection_remove_task(c);
3767         break;
3768     case Z_APDU_extendedServicesResponse:
3769         yaz_log(log_api, "%p recv_apdu Extended Services response", c);
3770         es_response(c, apdu->u.extendedServicesResponse);
3771         ZOOM_connection_remove_task(c);
3772         break;
3773     case Z_APDU_close:
3774         yaz_log(log_api, "%p recv_apdu Close PDU", c);
3775         if (!ZOOM_test_reconnect(c))
3776         {
3777             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3778             do_close(c);
3779         }
3780         break;
3781     default:
3782         yaz_log(log_api, "%p Received unknown PDU", c);
3783         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3784         do_close(c);
3785     }
3786 }
3787
3788 #if YAZ_HAVE_XML2
3789 static void handle_srw_response(ZOOM_connection c,
3790                                 Z_SRW_searchRetrieveResponse *res)
3791 {
3792     ZOOM_resultset resultset = 0;
3793     int i;
3794     NMEM nmem;
3795     ZOOM_Event event;
3796     int *start;
3797     const char *syntax, *elementSetName;
3798
3799     if (!c->tasks)
3800         return;
3801
3802     switch(c->tasks->which)
3803     {
3804     case ZOOM_TASK_SEARCH:
3805         resultset = c->tasks->u.search.resultset;
3806         start = &c->tasks->u.search.start;
3807         syntax = c->tasks->u.search.syntax;
3808         elementSetName = c->tasks->u.search.elementSetName;
3809         break;
3810     case ZOOM_TASK_RETRIEVE:
3811         resultset = c->tasks->u.retrieve.resultset;
3812         start = &c->tasks->u.retrieve.start;
3813         syntax = c->tasks->u.retrieve.syntax;
3814         elementSetName = c->tasks->u.retrieve.elementSetName;
3815         break;
3816     default:
3817         return;
3818     }
3819     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
3820     ZOOM_connection_put_event(c, event);
3821
3822     resultset->size = 0;
3823
3824     yaz_log(log_details, "%p handle_srw_response got SRW response OK", c);
3825
3826     if (res->numberOfRecords)
3827         resultset->size = *res->numberOfRecords;
3828
3829     for (i = 0; i<res->num_records; i++)
3830     {
3831         int pos;
3832
3833         Z_NamePlusRecord *npr = (Z_NamePlusRecord *)
3834             odr_malloc(c->odr_in, sizeof(Z_NamePlusRecord));
3835
3836         if (res->records[i].recordPosition &&
3837             *res->records[i].recordPosition > 0)
3838             pos = *res->records[i].recordPosition - 1;
3839         else
3840             pos = *start + i;
3841
3842         npr->databaseName = 0;
3843         npr->which = Z_NamePlusRecord_databaseRecord;
3844         npr->u.databaseRecord = (Z_External *)
3845             odr_malloc(c->odr_in, sizeof(Z_External));
3846         npr->u.databaseRecord->descriptor = 0;
3847         npr->u.databaseRecord->direct_reference =
3848             odr_oiddup(c->odr_in, yaz_oid_recsyn_xml);
3849         npr->u.databaseRecord->which = Z_External_octet;
3850
3851         npr->u.databaseRecord->u.octet_aligned = (Odr_oct *)
3852             odr_malloc(c->odr_in, sizeof(Odr_oct));
3853         npr->u.databaseRecord->u.octet_aligned->buf = (unsigned char*)
3854             res->records[i].recordData_buf;
3855         npr->u.databaseRecord->u.octet_aligned->len =
3856             npr->u.databaseRecord->u.octet_aligned->size =
3857             res->records[i].recordData_len;
3858         record_cache_add(resultset, npr, pos, syntax, elementSetName);
3859     }
3860     if (res->num_diagnostics > 0)
3861         set_SRU_error(c, &res->diagnostics[0]);
3862     nmem = odr_extract_mem(c->odr_in);
3863     nmem_transfer(odr_getmem(resultset->odr), nmem);
3864     nmem_destroy(nmem);
3865 }
3866 #endif
3867
3868 #if YAZ_HAVE_XML2
3869 static void handle_srw_scan_response(ZOOM_connection c,
3870                                      Z_SRW_scanResponse *res)
3871 {
3872     NMEM nmem = odr_extract_mem(c->odr_in);
3873     ZOOM_scanset scan;
3874
3875     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
3876         return;
3877     scan = c->tasks->u.scan.scan;
3878
3879     if (res->num_diagnostics > 0)
3880         set_SRU_error(c, &res->diagnostics[0]);
3881
3882     scan->scan_response = 0;
3883     scan->srw_scan_response = res;
3884     nmem_transfer(odr_getmem(scan->odr), nmem);
3885
3886     ZOOM_options_set_int(scan->options, "number", res->num_terms);
3887     nmem_destroy(nmem);
3888 }
3889 #endif
3890
3891 #if YAZ_HAVE_XML2
3892 static void handle_http(ZOOM_connection c, Z_HTTP_Response *hres)
3893 {
3894     int ret = -1;
3895     const char *addinfo = 0;
3896     const char *connection_head = z_HTTP_header_lookup(hres->headers,
3897                                                        "Connection");
3898     ZOOM_connection_set_mask(c, 0);
3899     yaz_log(log_details, "%p handle_http", c);
3900
3901     if (!yaz_srw_check_content_type(hres))
3902         addinfo = "content-type";
3903     else
3904     {
3905         Z_SOAP *soap_package = 0;
3906         ODR o = c->odr_in;
3907         Z_SOAP_Handler soap_handlers[2] = {
3908             {YAZ_XMLNS_SRU_v1_1, 0, (Z_SOAP_fun) yaz_srw_codec},
3909             {0, 0, 0}
3910         };
3911         ret = z_soap_codec(o, &soap_package,
3912                            &hres->content_buf, &hres->content_len,
3913                            soap_handlers);
3914         if (!ret && soap_package->which == Z_SOAP_generic &&
3915             soap_package->u.generic->no == 0)
3916         {
3917             Z_SRW_PDU *sr = (Z_SRW_PDU*) soap_package->u.generic->p;
3918             if (sr->which == Z_SRW_searchRetrieve_response)
3919                 handle_srw_response(c, sr->u.response);
3920             else if (sr->which == Z_SRW_scan_response)
3921                 handle_srw_scan_response(c, sr->u.scan_response);
3922             else
3923                 ret = -1;
3924         }
3925         else if (!ret && (soap_package->which == Z_SOAP_fault
3926                           || soap_package->which == Z_SOAP_error))
3927         {
3928             set_HTTP_error(c, hres->code,
3929                            soap_package->u.fault->fault_code,
3930                            soap_package->u.fault->fault_string);
3931         }
3932         else
3933             ret = -1;
3934     }
3935     if (ret)
3936     {
3937         if (hres->code != 200)
3938             set_HTTP_error(c, hres->code, 0, 0);
3939         else
3940             set_ZOOM_error(c, ZOOM_ERROR_DECODE, addinfo);
3941         do_close(c);
3942     }
3943     ZOOM_connection_remove_task(c);
3944     if (!strcmp(hres->version, "1.0"))
3945     {
3946         /* HTTP 1.0: only if Keep-Alive we stay alive.. */
3947         if (!connection_head || strcmp(connection_head, "Keep-Alive"))
3948             do_close(c);
3949     }
3950     else
3951     {
3952         /* HTTP 1.1: only if no close we stay alive .. */
3953         if (connection_head && !strcmp(connection_head, "close"))
3954             do_close(c);
3955     }
3956 }
3957 #endif
3958
3959 static int do_read(ZOOM_connection c)
3960 {
3961     int r, more;
3962     ZOOM_Event event;
3963
3964     event = ZOOM_Event_create(ZOOM_EVENT_RECV_DATA);
3965     ZOOM_connection_put_event(c, event);
3966
3967     r = cs_get(c->cs, &c->buf_in, &c->len_in);
3968     more = cs_more(c->cs);
3969     yaz_log(log_details, "%p do_read len=%d more=%d", c, r, more);
3970     if (r == 1)
3971         return 0;
3972     if (r <= 0)
3973     {
3974         if (!ZOOM_test_reconnect(c))
3975         {
3976             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3977             do_close(c);
3978         }
3979     }
3980     else
3981     {
3982         Z_GDU *gdu;
3983         ZOOM_Event event;
3984
3985         odr_reset(c->odr_in);
3986         odr_setbuf(c->odr_in, c->buf_in, r, 0);
3987         event = ZOOM_Event_create(ZOOM_EVENT_RECV_APDU);
3988         ZOOM_connection_put_event(c, event);
3989
3990         if (!z_GDU(c->odr_in, &gdu, 0, 0))
3991         {
3992             int x;
3993             int err = odr_geterrorx(c->odr_in, &x);
3994             char msg[100];
3995             const char *element = odr_getelement(c->odr_in);
3996             yaz_snprintf(msg, sizeof(msg),
3997                     "ODR code %d:%d element=%s offset=%d",
3998                     err, x, element ? element : "<unknown>",
3999                     odr_offset(c->odr_in));
4000             set_ZOOM_error(c, ZOOM_ERROR_DECODE, msg);
4001             if (log_api)
4002             {
4003                 FILE *ber_file = yaz_log_file();
4004                 if (ber_file)
4005                     odr_dumpBER(ber_file, c->buf_in, r);
4006             }
4007             do_close(c);
4008         }
4009         else if (gdu->which == Z_GDU_Z3950)
4010             recv_apdu(c, gdu->u.z3950);
4011         else if (gdu->which == Z_GDU_HTTP_Response)
4012         {
4013 #if YAZ_HAVE_XML2
4014             handle_http(c, gdu->u.HTTP_Response);
4015 #else
4016             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
4017             do_close(c);
4018 #endif
4019         }
4020         c->reconnect_ok = 0;
4021     }
4022     return 1;
4023 }
4024
4025 static zoom_ret do_write_ex(ZOOM_connection c, char *buf_out, int len_out)
4026 {
4027     int r;
4028     ZOOM_Event event;
4029
4030     event = ZOOM_Event_create(ZOOM_EVENT_SEND_DATA);
4031     ZOOM_connection_put_event(c, event);
4032
4033     yaz_log(log_details, "%p do_write_ex len=%d", c, len_out);
4034     if ((r = cs_put(c->cs, buf_out, len_out)) < 0)
4035     {
4036         yaz_log(log_details, "%p do_write_ex write failed", c);
4037         if (ZOOM_test_reconnect(c))
4038         {
4039             return zoom_pending;
4040         }
4041         if (c->state == STATE_CONNECTING)
4042             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
4043         else
4044             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
4045         do_close(c);
4046         return zoom_complete;
4047     }
4048     else if (r == 1)
4049     {
4050         int mask = ZOOM_SELECT_EXCEPT;
4051         if (c->cs->io_pending & CS_WANT_WRITE)
4052             mask += ZOOM_SELECT_WRITE;
4053         if (c->cs->io_pending & CS_WANT_READ)
4054             mask += ZOOM_SELECT_READ;
4055         ZOOM_connection_set_mask(c, mask);
4056         yaz_log(log_details, "%p do_write_ex write incomplete mask=%d",
4057                 c, c->mask);
4058     }
4059     else
4060     {
4061         ZOOM_connection_set_mask(c, ZOOM_SELECT_READ|ZOOM_SELECT_EXCEPT);
4062         yaz_log(log_details, "%p do_write_ex write complete mask=%d",
4063                 c, c->mask);
4064     }
4065     return zoom_pending;
4066 }
4067
4068 static zoom_ret do_write(ZOOM_connection c)
4069 {
4070     return do_write_ex(c, c->buf_out, c->len_out);
4071 }
4072
4073
4074 ZOOM_API(const char *)
4075     ZOOM_connection_option_get(ZOOM_connection c, const char *key)
4076 {
4077     return ZOOM_options_get(c->options, key);
4078 }
4079
4080 ZOOM_API(const char *)
4081     ZOOM_connection_option_getl(ZOOM_connection c, const char *key, int *lenp)
4082 {
4083     return ZOOM_options_getl(c->options, key, lenp);
4084 }
4085
4086 ZOOM_API(void)
4087     ZOOM_connection_option_set(ZOOM_connection c, const char *key,
4088                                const char *val)
4089 {
4090     ZOOM_options_set(c->options, key, val);
4091 }
4092
4093 ZOOM_API(void)
4094     ZOOM_connection_option_setl(ZOOM_connection c, const char *key,
4095                                 const char *val, int len)
4096 {
4097     ZOOM_options_setl(c->options, key, val, len);
4098 }
4099
4100 ZOOM_API(const char *)
4101     ZOOM_resultset_option_get(ZOOM_resultset r, const char *key)
4102 {
4103     return ZOOM_options_get(r->options, key);
4104 }
4105
4106 ZOOM_API(void)
4107     ZOOM_resultset_option_set(ZOOM_resultset r, const char *key,
4108                               const char *val)
4109 {
4110     ZOOM_options_set(r->options, key, val);
4111 }
4112
4113
4114 ZOOM_API(int)
4115     ZOOM_connection_errcode(ZOOM_connection c)
4116 {
4117     return ZOOM_connection_error(c, 0, 0);
4118 }
4119
4120 ZOOM_API(const char *)
4121     ZOOM_connection_errmsg(ZOOM_connection c)
4122 {
4123     const char *msg;
4124     ZOOM_connection_error(c, &msg, 0);
4125     return msg;
4126 }
4127
4128 ZOOM_API(const char *)
4129     ZOOM_connection_addinfo(ZOOM_connection c)
4130 {
4131     const char *addinfo;
4132     ZOOM_connection_error(c, 0, &addinfo);
4133     return addinfo;
4134 }
4135
4136 ZOOM_API(const char *)
4137     ZOOM_connection_diagset(ZOOM_connection c)
4138 {
4139     const char *diagset;
4140     ZOOM_connection_error_x(c, 0, 0, &diagset);
4141     return diagset;
4142 }
4143
4144 ZOOM_API(const char *)
4145     ZOOM_diag_str(int error)
4146 {
4147     switch (error)
4148     {
4149     case ZOOM_ERROR_NONE:
4150         return "No error";
4151     case ZOOM_ERROR_CONNECT:
4152         return "Connect failed";
4153     case ZOOM_ERROR_MEMORY:
4154         return "Out of memory";
4155     case ZOOM_ERROR_ENCODE:
4156         return "Encoding failed";
4157     case ZOOM_ERROR_DECODE:
4158         return "Decoding failed";
4159     case ZOOM_ERROR_CONNECTION_LOST:
4160         return "Connection lost";
4161     case ZOOM_ERROR_INIT:
4162         return "Init rejected";
4163     case ZOOM_ERROR_INTERNAL:
4164         return "Internal failure";
4165     case ZOOM_ERROR_TIMEOUT:
4166         return "Timeout";
4167     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
4168         return "Unsupported protocol";
4169     case ZOOM_ERROR_UNSUPPORTED_QUERY:
4170         return "Unsupported query type";
4171     case ZOOM_ERROR_INVALID_QUERY:
4172         return "Invalid query";
4173     case ZOOM_ERROR_CQL_PARSE:
4174         return "CQL parsing error";
4175     case ZOOM_ERROR_CQL_TRANSFORM:
4176         return "CQL transformation error";
4177     case ZOOM_ERROR_CCL_CONFIG:
4178         return "CCL configuration error";
4179     case ZOOM_ERROR_CCL_PARSE:
4180         return "CCL parsing error";
4181     default:
4182         return diagbib1_str(error);
4183     }
4184 }
4185
4186 ZOOM_API(int)
4187     ZOOM_connection_error_x(ZOOM_connection c, const char **cp,
4188                             const char **addinfo, const char **diagset)
4189 {
4190     int error = c->error;
4191     if (cp)
4192     {
4193         if (!c->diagset || !strcmp(c->diagset, "ZOOM"))
4194             *cp = ZOOM_diag_str(error);
4195         else if (!strcmp(c->diagset, "HTTP"))
4196             *cp = z_HTTP_errmsg(c->error);
4197         else if (!strcmp(c->diagset, "Bib-1"))
4198             *cp = ZOOM_diag_str(error);
4199         else if (!strcmp(c->diagset, "info:srw/diagnostic/1"))
4200             *cp = yaz_diag_srw_str(c->error);
4201         else
4202             *cp = "Unknown error and diagnostic set";
4203     }
4204     if (addinfo)
4205         *addinfo = c->addinfo ? c->addinfo : "";
4206     if (diagset)
4207         *diagset = c->diagset ? c->diagset : "";
4208     return c->error;
4209 }
4210
4211 ZOOM_API(int)
4212     ZOOM_connection_error(ZOOM_connection c, const char **cp,
4213                           const char **addinfo)
4214 {
4215     return ZOOM_connection_error_x(c, cp, addinfo, 0);
4216 }
4217
4218 static void ZOOM_connection_do_io(ZOOM_connection c, int mask)
4219 {
4220     ZOOM_Event event = 0;
4221     int r = cs_look(c->cs);
4222     yaz_log(log_details, "%p ZOOM_connection_do_io mask=%d cs_look=%d",
4223             c, mask, r);
4224
4225     if (r == CS_NONE)
4226     {
4227         event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
4228         set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
4229         do_close(c);
4230         ZOOM_connection_put_event(c, event);
4231     }
4232     else if (r == CS_CONNECT)
4233     {
4234         int ret = ret = cs_rcvconnect(c->cs);
4235         yaz_log(log_details, "%p ZOOM_connection_do_io "
4236                 "cs_rcvconnect returned %d", c, ret);
4237         if (ret == 1)
4238         {
4239             int mask = ZOOM_SELECT_EXCEPT;
4240             if (c->cs->io_pending & CS_WANT_WRITE)
4241                 mask += ZOOM_SELECT_WRITE;
4242             if (c->cs->io_pending & CS_WANT_READ)
4243                 mask += ZOOM_SELECT_READ;
4244             ZOOM_connection_set_mask(c, mask);
4245             event = ZOOM_Event_create(ZOOM_EVENT_NONE);
4246             ZOOM_connection_put_event(c, event);
4247         }
4248         else if (ret == 0)
4249         {
4250             event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
4251             ZOOM_connection_put_event(c, event);
4252             get_cert(c);
4253             if (c->proto == PROTO_Z3950)
4254                 ZOOM_connection_send_init(c);
4255             else
4256             {
4257                 /* no init request for SRW .. */
4258                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
4259                 ZOOM_connection_remove_task(c);
4260                 ZOOM_connection_set_mask(c, 0);
4261                 ZOOM_connection_exec_task(c);
4262             }
4263             c->state = STATE_ESTABLISHED;
4264         }
4265         else
4266         {
4267             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
4268             do_close(c);
4269         }
4270     }
4271     else
4272     {
4273         if (mask & ZOOM_SELECT_EXCEPT)
4274         {
4275             if (!ZOOM_test_reconnect(c))
4276             {
4277                 set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
4278                 do_close(c);
4279             }
4280             return;
4281         }
4282         if (mask & ZOOM_SELECT_READ)
4283             do_read(c);
4284         if (c->cs && (mask & ZOOM_SELECT_WRITE))
4285             do_write(c);
4286     }
4287 }
4288
4289 ZOOM_API(int)
4290     ZOOM_connection_last_event(ZOOM_connection cs)
4291 {
4292     if (!cs)
4293         return ZOOM_EVENT_NONE;
4294     return cs->last_event;
4295 }
4296
4297
4298 static void cql2pqf_wrbuf_puts(const char *buf, void *client_data)
4299 {
4300     WRBUF wrbuf = (WRBUF) client_data;
4301     wrbuf_puts(wrbuf, buf);
4302 }
4303
4304 /*
4305  * Returns an xmalloc()d string containing RPN that corresponds to the
4306  * CQL passed in.  On error, sets the Connection object's error state
4307  * and returns a null pointer.
4308  * ### We could cache CQL parser and/or transformer in Connection.
4309  */
4310 static char *cql2pqf(ZOOM_connection c, const char *cql)
4311 {
4312     CQL_parser parser;
4313     int error;
4314     const char *cqlfile;
4315     cql_transform_t trans;
4316     char *result = 0;
4317
4318     parser = cql_parser_create();
4319     if ((error = cql_parser_string(parser, cql)) != 0) {
4320         cql_parser_destroy(parser);
4321         set_ZOOM_error(c, ZOOM_ERROR_CQL_PARSE, cql);
4322         return 0;
4323     }
4324
4325     cqlfile = ZOOM_connection_option_get(c, "cqlfile");
4326     if (cqlfile == 0)
4327     {
4328         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, "no CQL transform file");
4329     }
4330     else if ((trans = cql_transform_open_fname(cqlfile)) == 0)
4331     {
4332         char buf[512];
4333         sprintf(buf, "can't open CQL transform file '%.200s': %.200s",
4334                 cqlfile, strerror(errno));
4335         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4336     }
4337     else
4338     {
4339         WRBUF wrbuf_result = wrbuf_alloc();
4340         error = cql_transform(trans, cql_parser_result(parser),
4341                               cql2pqf_wrbuf_puts, wrbuf_result);
4342         if (error != 0) {
4343             char buf[512];
4344             const char *addinfo;
4345             error = cql_transform_error(trans, &addinfo);
4346             sprintf(buf, "%.200s (addinfo=%.200s)",
4347                     cql_strerror(error), addinfo);
4348             set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4349         }
4350         else
4351         {
4352             result = xstrdup(wrbuf_cstr(wrbuf_result));
4353         }
4354         cql_transform_close(trans);
4355         wrbuf_destroy(wrbuf_result);
4356     }
4357     cql_parser_destroy(parser);
4358     return result;
4359 }
4360
4361 ZOOM_API(int) ZOOM_connection_fire_event_timeout(ZOOM_connection c)
4362 {
4363     if (c->mask)
4364     {
4365         ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
4366         /* timeout and this connection was waiting */
4367         set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
4368         do_close(c);
4369         ZOOM_connection_put_event(c, event);
4370     }
4371     return 0;
4372 }
4373
4374 ZOOM_API(int)
4375     ZOOM_connection_process(ZOOM_connection c)
4376 {
4377     ZOOM_Event event;
4378     if (!c)
4379         return 0;
4380
4381     event = ZOOM_connection_get_event(c);
4382     if (event)
4383     {
4384         ZOOM_Event_destroy(event);
4385         return 1;
4386     }
4387     ZOOM_connection_exec_task(c);
4388     event = ZOOM_connection_get_event(c);
4389     if (event)
4390     {
4391         ZOOM_Event_destroy(event);
4392         return 1;
4393     }
4394     return 0;
4395 }
4396
4397 ZOOM_API(int)
4398     ZOOM_event_nonblock(int no, ZOOM_connection *cs)
4399 {
4400     int i;
4401
4402     yaz_log(log_details, "ZOOM_process_event(no=%d,cs=%p)", no, cs);
4403
4404     for (i = 0; i<no; i++)
4405     {
4406         ZOOM_connection c = cs[i];
4407
4408         if (c && ZOOM_connection_process(c))
4409             return i+1;
4410     }
4411     return 0;
4412 }
4413
4414 ZOOM_API(int) ZOOM_connection_fire_event_socket(ZOOM_connection c, int mask)
4415 {
4416     if (c->mask && mask)
4417         ZOOM_connection_do_io(c, mask);
4418     return 0;
4419 }
4420
4421 ZOOM_API(int) ZOOM_connection_get_socket(ZOOM_connection c)
4422 {
4423     if (c->cs)
4424         return cs_fileno(c->cs);
4425     return -1;
4426 }
4427
4428 ZOOM_API(int) ZOOM_connection_set_mask(ZOOM_connection c, int mask)
4429 {
4430     c->mask = mask;
4431     if (!c->cs)
4432         return -1;
4433     return 0;
4434 }
4435
4436 ZOOM_API(int) ZOOM_connection_get_mask(ZOOM_connection c)
4437 {
4438     if (c->cs)
4439         return c->mask;
4440     return 0;
4441 }
4442
4443 ZOOM_API(int) ZOOM_connection_get_timeout(ZOOM_connection c)
4444 {
4445     return ZOOM_options_get_int(c->options, "timeout", 30);
4446 }
4447
4448 /*
4449  * Local variables:
4450  * c-basic-offset: 4
4451  * indent-tabs-mode: nil
4452  * End:
4453  * vim: shiftwidth=4 tabstop=8 expandtab
4454  */
4455