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 1.139 2007-07-04 11:42:14 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 #endif
 184
 185
 186 static void set_ZOOM_error(ZOOM_connection c, int error,
 187                            const char *addinfo)
 188 {
 189     set_dset_error(c, error, "ZOOM", addinfo, 0);
 190 }
 191
 192 static void clear_error(ZOOM_connection c)
 193 {
 194     /*
 195      * If an error is tied to an operation then it's ok to clear: for
 196      * example, a diagnostic returned from a search is cleared by a
 197      * subsequent search.  However, problems such as Connection Lost
 198      * or Init Refused are not cleared, because they are not
 199      * recoverable: doing another search doesn't help.
 200      */
 201
 202     ZOOM_connection_remove_events(c);
 203     switch (c->error)
 204     {
 205     case ZOOM_ERROR_CONNECT:
 206     case ZOOM_ERROR_MEMORY:
 207     case ZOOM_ERROR_DECODE:
 208     case ZOOM_ERROR_CONNECTION_LOST:
 209     case ZOOM_ERROR_INIT:
 210     case ZOOM_ERROR_INTERNAL:
 211     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
 212         break;
 213     default:
 214         set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 215     }
 216 }
 217
 218 void ZOOM_connection_show_task(ZOOM_task task)
 219 {
 220     switch(task->which)
 221     {
 222     case ZOOM_TASK_SEARCH:
 223         yaz_log(YLOG_LOG, "search p=%p", task);
 224         break;
 225     case ZOOM_TASK_RETRIEVE:
 226         yaz_log(YLOG_LOG, "retrieve p=%p", task);
 227         break;
 228     case ZOOM_TASK_CONNECT:
 229         yaz_log(YLOG_LOG, "connect p=%p", task);
 230         break;
 231     case ZOOM_TASK_SCAN:
 232         yaz_log(YLOG_LOG, "scant p=%p", task);
 233         break;
 234     }
 235 }
 236
 237 void ZOOM_connection_show_tasks(ZOOM_connection c)
 238 {
 239     ZOOM_task task;
 240     yaz_log(YLOG_LOG, "connection p=%p tasks", c);
 241     for (task = c->tasks; task; task = task->next)
 242         ZOOM_connection_show_task(task);
 243 }
 244
 245 ZOOM_task ZOOM_connection_add_task(ZOOM_connection c, int which)
 246 {
 247     ZOOM_task *taskp = &c->tasks;
 248     while (*taskp)
 249         taskp = &(*taskp)->next;
 250     *taskp = (ZOOM_task) xmalloc(sizeof(**taskp));
 251     (*taskp)->running = 0;
 252     (*taskp)->which = which;
 253     (*taskp)->next = 0;
 254     clear_error(c);
 255     return *taskp;
 256 }
 257
 258 ZOOM_API(int) ZOOM_connection_is_idle(ZOOM_connection c)
 259 {
 260     return c->tasks ? 0 : 1;
 261 }
 262
 263 ZOOM_task ZOOM_connection_insert_task(ZOOM_connection c, int which)
 264 {
 265     ZOOM_task task = (ZOOM_task) xmalloc(sizeof(*task));
 266
 267     task->next = c->tasks;
 268     c->tasks = task;
 269
 270     task->running = 0;
 271     task->which = which;
 272     clear_error(c);
 273     return task;
 274 }
 275
 276 void ZOOM_connection_remove_task(ZOOM_connection c)
 277 {
 278     ZOOM_task task = c->tasks;
 279
 280     if (task)
 281     {
 282         c->tasks = task->next;
 283         switch (task->which)
 284         {
 285         case ZOOM_TASK_SEARCH:
 286             resultset_destroy(task->u.search.resultset);
 287             xfree(task->u.search.syntax);
 288             xfree(task->u.search.elementSetName);
 289             break;
 290         case ZOOM_TASK_RETRIEVE:
 291             resultset_destroy(task->u.retrieve.resultset);
 292             xfree(task->u.retrieve.syntax);
 293             xfree(task->u.retrieve.elementSetName);
 294             break;
 295         case ZOOM_TASK_CONNECT:
 296             break;
 297         case ZOOM_TASK_SCAN:
 298             ZOOM_scanset_destroy(task->u.scan.scan);
 299             break;
 300         case ZOOM_TASK_PACKAGE:
 301             ZOOM_package_destroy(task->u.package);
 302             break;
 303         case ZOOM_TASK_SORT:
 304             resultset_destroy(task->u.sort.resultset);
 305             ZOOM_query_destroy(task->u.sort.q);
 306             break;
 307         default:
 308             assert(0);
 309         }
 310         xfree(task);
 311
 312         if (!c->tasks)
 313         {
 314             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_END);
 315             ZOOM_connection_put_event(c, event);
 316         }
 317     }
 318 }
 319
 320 static int ZOOM_connection_exec_task(ZOOM_connection c);
 321
 322 void ZOOM_connection_remove_tasks(ZOOM_connection c)
 323 {
 324     while (c->tasks)
 325         ZOOM_connection_remove_task(c);
 326 }
 327
 328 static ZOOM_record record_cache_lookup(ZOOM_resultset r, int pos,
 329                                        const char *syntax,
 330                                        const char *elementSetName);
 331
 332 ZOOM_API(ZOOM_connection)
 333     ZOOM_connection_create(ZOOM_options options)
 334 {
 335     ZOOM_connection c = (ZOOM_connection) xmalloc(sizeof(*c));
 336
 337     initlog();
 338
 339     yaz_log(log_api, "%p ZOOM_connection_create", c);
 340
 341     c->proto = PROTO_Z3950;
 342     c->cs = 0;
 343     ZOOM_connection_set_mask(c, 0);
 344     c->reconnect_ok = 0;
 345     c->state = STATE_IDLE;
 346     c->addinfo = 0;
 347     c->diagset = 0;
 348     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 349     c->buf_in = 0;
 350     c->len_in = 0;
 351     c->buf_out = 0;
 352     c->len_out = 0;
 353     c->resultsets = 0;
 354
 355     c->options = ZOOM_options_create_with_parent(options);
 356
 357     c->host_port = 0;
 358     c->path = 0;
 359     c->proxy = 0;
 360
 361     c->charset = c->lang = 0;
 362
 363     c->cookie_out = 0;
 364     c->cookie_in = 0;
 365     c->client_IP = 0;
 366     c->tasks = 0;
 367
 368     c->user = 0;
 369     c->group = 0;
 370     c->password = 0;
 371
 372     c->maximum_record_size = 0;
 373     c->preferred_message_size = 0;
 374
 375     c->odr_in = odr_createmem(ODR_DECODE);
 376     c->odr_out = odr_createmem(ODR_ENCODE);
 377
 378     c->async = 0;
 379     c->support_named_resultsets = 0;
 380     c->last_event = ZOOM_EVENT_NONE;
 381
 382     c->m_queue_front = 0;
 383     c->m_queue_back = 0;
 384     return c;
 385 }
 386
 387
 388 /* set database names. Take local databases (if set); otherwise
 389    take databases given in ZURL (if set); otherwise use Default */
 390 static char **set_DatabaseNames(ZOOM_connection con, ZOOM_options options,
 391                                 int *num, ODR odr)
 392 {
 393     char **databaseNames;
 394     const char *cp = ZOOM_options_get(options, "databaseName");
 395
 396     if ((!cp || !*cp) && con->host_port)
 397     {
 398         if (strncmp(con->host_port, "unix:", 5) == 0)
 399             cp = strchr(con->host_port+5, ':');
 400         else
 401             cp = strchr(con->host_port, '/');
 402         if (cp)
 403             cp++;
 404     }
 405     if (!cp)
 406         cp = "Default";
 407     nmem_strsplit(odr_getmem(odr), "+", cp,  &databaseNames, num);
 408     return databaseNames;
 409 }
 410
 411 ZOOM_API(ZOOM_connection)
 412     ZOOM_connection_new(const char *host, int portnum)
 413 {
 414     ZOOM_connection c = ZOOM_connection_create(0);
 415
 416     ZOOM_connection_connect(c, host, portnum);
 417     return c;
 418 }
 419
 420 static zoom_sru_mode get_sru_mode_from_string(const char *s)
 421 {
 422     if (!s || !*s)
 423         return zoom_sru_soap;
 424     if (!yaz_matchstr(s, "soap"))
 425         return zoom_sru_soap;
 426     else if (!yaz_matchstr(s, "get"))
 427         return zoom_sru_get;
 428     else if (!yaz_matchstr(s, "post"))
 429         return zoom_sru_post;
 430     return zoom_sru_error;
 431 }
 432
 433 ZOOM_API(void)
 434     ZOOM_connection_connect(ZOOM_connection c,
 435                             const char *host, int portnum)
 436 {
 437     const char *val;
 438     ZOOM_task task;
 439
 440     initlog();
 441
 442     yaz_log(log_api, "%p ZOOM_connection_connect host=%s portnum=%d",
 443             c, host ? host : "null", portnum);
 444
 445     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 446     ZOOM_connection_remove_tasks(c);
 447
 448     if (c->cs)
 449     {
 450         yaz_log(log_details, "%p ZOOM_connection_connect reconnect ok", c);
 451         c->reconnect_ok = 1;
 452         return;
 453     }
 454     yaz_log(log_details, "%p ZOOM_connection_connect connect", c);
 455     xfree(c->proxy);
 456     c->proxy = 0;
 457     val = ZOOM_options_get(c->options, "proxy");
 458     if (val && *val)
 459     {
 460         yaz_log(log_details, "%p ZOOM_connection_connect proxy=%s", c, val);
 461         c->proxy = xstrdup(val);
 462     }
 463
 464     xfree(c->charset);
 465     c->charset = 0;
 466     val = ZOOM_options_get(c->options, "charset");
 467     if (val && *val)
 468     {
 469         yaz_log(log_details, "%p ZOOM_connection_connect charset=%s", c, val);
 470         c->charset = xstrdup(val);
 471     }
 472
 473     xfree(c->lang);
 474     val = ZOOM_options_get(c->options, "lang");
 475     if (val && *val)
 476     {
 477         yaz_log(log_details, "%p ZOOM_connection_connect lang=%s", c, val);
 478         c->lang = xstrdup(val);
 479     }
 480     else
 481         c->lang = 0;
 482
 483     if (host)
 484     {
 485         xfree(c->host_port);
 486         if (portnum)
 487         {
 488             char hostn[128];
 489             sprintf(hostn, "%.80s:%d", host, portnum);
 490             c->host_port = xstrdup(hostn);
 491         }
 492         else
 493             c->host_port = xstrdup(host);
 494     }
 495
 496     {
 497         /*
 498          * If the "<scheme>:" part of the host string is preceded by one
 499          * or more comma-separated <name>=<value> pairs, these are taken
 500          * to be options to be set on the connection object.  Among other
 501          * applications, this facility can be used to embed authentication
 502          * in a host string:
 503          *          user=admin,password=secret,tcp:localhost:9999
 504          */
 505         char *remainder = c->host_port;
 506         char *pcolon = strchr(remainder, ':');
 507         char *pcomma;
 508         char *pequals;
 509         while ((pcomma = strchr(remainder, ',')) != 0 &&
 510                (pcolon == 0 || pcomma < pcolon)) {
 511             *pcomma = '\0';
 512             if ((pequals = strchr(remainder, '=')) != 0) {
 513                 *pequals = '\0';
 514                 /*printf("# setting '%s'='%s'\n", remainder, pequals+1);*/
 515                 ZOOM_connection_option_set(c, remainder, pequals+1);
 516             }
 517             remainder = pcomma+1;
 518         }
 519
 520         if (remainder != c->host_port) {
 521             xfree(c->host_port);
 522             c->host_port = xstrdup(remainder);
 523             /*printf("# reset hp='%s'\n", remainder);*/
 524         }
 525     }
 526
 527     val = ZOOM_options_get(c->options, "sru");
 528     c->sru_mode = get_sru_mode_from_string(val);
 529
 530     ZOOM_options_set(c->options, "host", c->host_port);
 531
 532     xfree(c->cookie_out);
 533     c->cookie_out = 0;
 534     val = ZOOM_options_get(c->options, "cookie");
 535     if (val && *val)
 536     {
 537         yaz_log(log_details, "%p ZOOM_connection_connect cookie=%s", c, val);
 538         c->cookie_out = xstrdup(val);
 539     }
 540
 541     xfree(c->client_IP);
 542     c->client_IP = 0;
 543     val = ZOOM_options_get(c->options, "clientIP");
 544     if (val && *val)
 545     {
 546         yaz_log(log_details, "%p ZOOM_connection_connect clientIP=%s",
 547                 c, val);
 548         c->client_IP = xstrdup(val);
 549     }
 550
 551     xfree(c->group);
 552     c->group = 0;
 553     val = ZOOM_options_get(c->options, "group");
 554     if (val && *val)
 555         c->group = xstrdup(val);
 556
 557     xfree(c->user);
 558     c->user = 0;
 559     val = ZOOM_options_get(c->options, "user");
 560     if (val && *val)
 561         c->user = xstrdup(val);
 562
 563     xfree(c->password);
 564     c->password = 0;
 565     val = ZOOM_options_get(c->options, "password");
 566     if (!val)
 567         val = ZOOM_options_get(c->options, "pass");
 568
 569     if (val && *val)
 570         c->password = xstrdup(val);
 571
 572     c->maximum_record_size =
 573         ZOOM_options_get_int(c->options, "maximumRecordSize", 1024*1024);
 574     c->preferred_message_size =
 575         ZOOM_options_get_int(c->options, "preferredMessageSize", 1024*1024);
 576
 577     c->async = ZOOM_options_get_bool(c->options, "async", 0);
 578     yaz_log(log_details, "%p ZOOM_connection_connect async=%d", c, c->async);
 579
 580     task = ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 581
 582     if (!c->async)
 583     {
 584         while (ZOOM_event(1, &c))
 585             ;
 586     }
 587 }
 588
 589 ZOOM_API(ZOOM_query)
 590     ZOOM_query_create(void)
 591 {
 592     ZOOM_query s = (ZOOM_query) xmalloc(sizeof(*s));
 593
 594     yaz_log(log_details, "%p ZOOM_query_create", s);
 595     s->refcount = 1;
 596     s->z_query = 0;
 597     s->sort_spec = 0;
 598     s->odr = odr_createmem(ODR_ENCODE);
 599     s->query_string = 0;
 600
 601     return s;
 602 }
 603
 604 ZOOM_API(void)
 605     ZOOM_query_destroy(ZOOM_query s)
 606 {
 607     if (!s)
 608         return;
 609
 610     (s->refcount)--;
 611     yaz_log(log_details, "%p ZOOM_query_destroy count=%d", s, s->refcount);
 612     if (s->refcount == 0)
 613     {
 614         odr_destroy(s->odr);
 615         xfree(s);
 616     }
 617 }
 618
 619 ZOOM_API(int)
 620     ZOOM_query_prefix(ZOOM_query s, const char *str)
 621 {
 622     s->query_string = odr_strdup(s->odr, str);
 623     s->z_query = (Z_Query *) odr_malloc(s->odr, sizeof(*s->z_query));
 624     s->z_query->which = Z_Query_type_1;
 625     s->z_query->u.type_1 =  p_query_rpn(s->odr, str);
 626     if (!s->z_query->u.type_1)
 627     {
 628         yaz_log(log_details, "%p ZOOM_query_prefix str=%s failed", s, str);
 629         s->z_query = 0;
 630         return -1;
 631     }
 632     yaz_log(log_details, "%p ZOOM_query_prefix str=%s", s, str);
 633     return 0;
 634 }
 635
 636 ZOOM_API(int)
 637     ZOOM_query_cql(ZOOM_query s, const char *str)
 638 {
 639     Z_External *ext;
 640
 641     s->query_string = odr_strdup(s->odr, str);
 642
 643     ext = (Z_External *) odr_malloc(s->odr, sizeof(*ext));
 644     ext->direct_reference = odr_getoidbystr(s->odr, "1.2.840.10003.16.2");
 645     ext->indirect_reference = 0;
 646     ext->descriptor = 0;
 647     ext->which = Z_External_CQL;
 648     ext->u.cql = s->query_string;
 649
 650     s->z_query = (Z_Query *) odr_malloc(s->odr, sizeof(*s->z_query));
 651     s->z_query->which = Z_Query_type_104;
 652     s->z_query->u.type_104 =  ext;
 653
 654     yaz_log(log_details, "%p ZOOM_query_cql str=%s", s, str);
 655
 656     return 0;
 657 }
 658
 659 /*
 660  * Translate the CQL string client-side into RPN which is passed to
 661  * the server.  This is useful for server's that don't themselves
 662  * support CQL, for which ZOOM_query_cql() is useless.  `conn' is used
 663  * only as a place to stash diagnostics if compilation fails; if this
 664  * information is not needed, a null pointer may be used.
 665  */
 666 ZOOM_API(int)
 667     ZOOM_query_cql2rpn(ZOOM_query s, const char *str, ZOOM_connection conn)
 668 {
 669     char *rpn;
 670     int ret;
 671     ZOOM_connection freeme = 0;
 672
 673     yaz_log(log_details, "%p ZOOM_query_cql2rpn str=%s conn=%p", s, str, conn);
 674     if (conn == 0)
 675         conn = freeme = ZOOM_connection_create(0);
 676
 677     rpn = cql2pqf(conn, str);
 678     if (freeme != 0)
 679         ZOOM_connection_destroy(freeme);
 680     if (rpn == 0)
 681         return -1;
 682
 683     ret = ZOOM_query_prefix(s, rpn);
 684     xfree(rpn);
 685     return ret;
 686 }
 687
 688 /*
 689  * Analogous in every way to ZOOM_query_cql2rpn(), except that there
 690  * is no analogous ZOOM_query_ccl() that just sends uninterpreted CCL
 691  * to the server, as the YAZ GFS doesn't know how to handle this.
 692  */
 693 ZOOM_API(int)
 694     ZOOM_query_ccl2rpn(ZOOM_query s, const char *str, const char *config,
 695                        int *ccl_error, const char **error_string,
 696                        int *error_pos)
 697 {
 698     int ret;
 699     struct ccl_rpn_node *rpn;
 700     CCL_bibset bibset = ccl_qual_mk();
 701
 702     if (config)
 703         ccl_qual_buf(bibset, config);
 704
 705     rpn = ccl_find_str(bibset, str, ccl_error, error_pos);
 706     if (!rpn)
 707     {
 708         *error_string = ccl_err_msg(*ccl_error);
 709         ret = -1;
 710     }
 711     else
 712     {
 713         WRBUF wr = wrbuf_alloc();
 714         ccl_pquery(wr, rpn);
 715         ccl_rpn_delete(rpn);
 716         ret = ZOOM_query_prefix(s, wrbuf_cstr(wr));
 717         wrbuf_destroy(wr);
 718     }
 719     ccl_qual_rm(&bibset);
 720     return ret;
 721 }
 722
 723 ZOOM_API(int)
 724     ZOOM_query_sortby(ZOOM_query s, const char *criteria)
 725 {
 726     s->sort_spec = yaz_sort_spec(s->odr, criteria);
 727     if (!s->sort_spec)
 728     {
 729         yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s failed",
 730                 s, criteria);
 731         return -1;
 732     }
 733     yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s", s, criteria);
 734     return 0;
 735 }
 736
 737 static zoom_ret do_write(ZOOM_connection c);
 738
 739 ZOOM_API(void)
 740     ZOOM_connection_destroy(ZOOM_connection c)
 741 {
 742     ZOOM_resultset r;
 743     if (!c)
 744         return;
 745     yaz_log(log_api, "%p ZOOM_connection_destroy", c);
 746     if (c->cs)
 747         cs_close(c->cs);
 748     for (r = c->resultsets; r; r = r->next)
 749         r->connection = 0;
 750
 751     xfree(c->buf_in);
 752     xfree(c->addinfo);
 753     xfree(c->diagset);
 754     odr_destroy(c->odr_in);
 755     odr_destroy(c->odr_out);
 756     ZOOM_options_destroy(c->options);
 757     ZOOM_connection_remove_tasks(c);
 758     ZOOM_connection_remove_events(c);
 759     xfree(c->host_port);
 760     xfree(c->path);
 761     xfree(c->proxy);
 762     xfree(c->charset);
 763     xfree(c->lang);
 764     xfree(c->cookie_out);
 765     xfree(c->cookie_in);
 766     xfree(c->client_IP);
 767     xfree(c->user);
 768     xfree(c->group);
 769     xfree(c->password);
 770     xfree(c);
 771 }
 772
 773 void ZOOM_resultset_addref(ZOOM_resultset r)
 774 {
 775     if (r)
 776     {
 777         (r->refcount)++;
 778         yaz_log(log_details, "%p ZOOM_resultset_addref count=%d",
 779                 r, r->refcount);
 780     }
 781 }
 782
 783 ZOOM_resultset ZOOM_resultset_create(void)
 784 {
 785     int i;
 786     ZOOM_resultset r = (ZOOM_resultset) xmalloc(sizeof(*r));
 787
 788     initlog();
 789
 790     yaz_log(log_details, "%p ZOOM_resultset_create", r);
 791     r->refcount = 1;
 792     r->size = 0;
 793     r->odr = odr_createmem(ODR_ENCODE);
 794     r->piggyback = 1;
 795     r->setname = 0;
 796     r->schema = 0;
 797     r->step = 0;
 798     for (i = 0; i<RECORD_HASH_SIZE; i++)
 799         r->record_hash[i] = 0;
 800     r->r_sort_spec = 0;
 801     r->query = 0;
 802     r->connection = 0;
 803     r->next = 0;
 804     r->databaseNames = 0;
 805     r->num_databaseNames = 0;
 806     r->rpn_iconv = 0;
 807     return r;
 808 }
 809
 810 ZOOM_API(ZOOM_resultset)
 811     ZOOM_connection_search_pqf(ZOOM_connection c, const char *q)
 812 {
 813     ZOOM_resultset r;
 814     ZOOM_query s = ZOOM_query_create();
 815
 816     ZOOM_query_prefix(s, q);
 817
 818     r = ZOOM_connection_search(c, s);
 819     ZOOM_query_destroy(s);
 820     return r;
 821 }
 822
 823 ZOOM_API(ZOOM_resultset)
 824     ZOOM_connection_search(ZOOM_connection c, ZOOM_query q)
 825 {
 826     ZOOM_resultset r = ZOOM_resultset_create();
 827     ZOOM_task task;
 828     const char *cp;
 829     int start, count;
 830     const char *syntax, *elementSetName;
 831
 832     yaz_log(log_api, "%p ZOOM_connection_search set %p query %p", c, r, q);
 833     r->r_sort_spec = q->sort_spec;
 834     r->query = q;
 835
 836     r->options = ZOOM_options_create_with_parent(c->options);
 837
 838     {
 839         const char *cp = ZOOM_options_get(r->options, "rpnCharset");
 840         if (cp)
 841             r->rpn_iconv = yaz_iconv_open(cp, "UTF-8");
 842     }
 843
 844
 845     start = ZOOM_options_get_int(r->options, "start", 0);
 846     count = ZOOM_options_get_int(r->options, "count", 0);
 847     {
 848         /* If "presentChunk" is defined use that; otherwise "step" */
 849         const char *cp = ZOOM_options_get(r->options, "presentChunk");
 850         r->step = ZOOM_options_get_int(r->options,
 851                                        (cp != 0 ? "presentChunk": "step"), 0);
 852     }
 853     r->piggyback = ZOOM_options_get_bool(r->options, "piggyback", 1);
 854     cp = ZOOM_options_get(r->options, "setname");
 855     if (cp)
 856         r->setname = xstrdup(cp);
 857     cp = ZOOM_options_get(r->options, "schema");
 858     if (cp)
 859         r->schema = xstrdup(cp);
 860
 861     r->databaseNames = set_DatabaseNames(c, c->options, &r->num_databaseNames,
 862                                          r->odr);
 863
 864     r->connection = c;
 865
 866     r->next = c->resultsets;
 867     c->resultsets = r;
 868
 869
 870
 871     if (c->host_port && c->proto == PROTO_HTTP)
 872     {
 873         if (!c->cs)
 874         {
 875             yaz_log(log_details, "ZOOM_connection_search: no comstack");
 876             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 877         }
 878         else
 879         {
 880             yaz_log(log_details, "ZOOM_connection_search: reconnect");
 881             c->reconnect_ok = 1;
 882         }
 883     }
 884
 885     task = ZOOM_connection_add_task(c, ZOOM_TASK_SEARCH);
 886     task->u.search.resultset = r;
 887     task->u.search.start = start;
 888     task->u.search.count = count;
 889
 890     syntax = ZOOM_options_get(r->options, "preferredRecordSyntax");
 891     task->u.search.syntax = syntax ? xstrdup(syntax) : 0;
 892     elementSetName = ZOOM_options_get(r->options, "elementSetName");
 893     task->u.search.elementSetName = elementSetName
 894         ? xstrdup(elementSetName) : 0;
 895
 896     ZOOM_resultset_addref(r);
 897
 898     (q->refcount)++;
 899
 900     if (!c->async)
 901     {
 902         while (ZOOM_event(1, &c))
 903             ;
 904     }
 905     return r;
 906 }
 907
 908 ZOOM_API(void)
 909     ZOOM_resultset_sort(ZOOM_resultset r,
 910                          const char *sort_type, const char *sort_spec)
 911 {
 912     (void) ZOOM_resultset_sort1(r, sort_type, sort_spec);
 913 }
 914
 915 ZOOM_API(int)
 916     ZOOM_resultset_sort1(ZOOM_resultset r,
 917                          const char *sort_type, const char *sort_spec)
 918 {
 919     ZOOM_connection c = r->connection;
 920     ZOOM_task task;
 921     ZOOM_query newq;
 922
 923     newq = ZOOM_query_create();
 924     if (ZOOM_query_sortby(newq, sort_spec) < 0)
 925         return -1;
 926
 927     yaz_log(log_api, "%p ZOOM_resultset_sort r=%p sort_type=%s sort_spec=%s",
 928             r, r, sort_type, sort_spec);
 929     if (!c)
 930         return 0;
 931
 932     if (c->host_port && c->proto == PROTO_HTTP)
 933     {
 934         if (!c->cs)
 935         {
 936             yaz_log(log_details, "%p ZOOM_resultset_sort: no comstack", r);
 937             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 938         }
 939         else
 940         {
 941             yaz_log(log_details, "%p ZOOM_resultset_sort: prepare reconnect",
 942                     r);
 943             c->reconnect_ok = 1;
 944         }
 945     }
 946
 947     ZOOM_resultset_cache_reset(r);
 948     task = ZOOM_connection_add_task(c, ZOOM_TASK_SORT);
 949     task->u.sort.resultset = r;
 950     task->u.sort.q = newq;
 951
 952     ZOOM_resultset_addref(r);
 953
 954     if (!c->async)
 955     {
 956         while (ZOOM_event(1, &c))
 957             ;
 958     }
 959
 960     return 0;
 961 }
 962
 963 ZOOM_API(void)
 964     ZOOM_resultset_cache_reset(ZOOM_resultset r)
 965 {
 966     int i;
 967     for (i = 0; i<RECORD_HASH_SIZE; i++)
 968     {
 969         ZOOM_record_cache rc;
 970         for (rc = r->record_hash[i]; rc; rc = rc->next)
 971         {
 972             if (rc->rec.wrbuf_marc)
 973                 wrbuf_destroy(rc->rec.wrbuf_marc);
 974             if (rc->rec.wrbuf_iconv)
 975                 wrbuf_destroy(rc->rec.wrbuf_iconv);
 976             if (rc->rec.wrbuf_opac)
 977                 wrbuf_destroy(rc->rec.wrbuf_opac);
 978         }
 979         r->record_hash[i] = 0;
 980     }
 981 }
 982
 983 ZOOM_API(void)
 984     ZOOM_resultset_destroy(ZOOM_resultset r)
 985 {
 986     resultset_destroy(r);
 987 }
 988
 989 static void resultset_destroy(ZOOM_resultset r)
 990 {
 991     if (!r)
 992         return;
 993     (r->refcount)--;
 994     yaz_log(log_details, "%p ZOOM_resultset_destroy r=%p count=%d",
 995             r, r, r->refcount);
 996     if (r->refcount == 0)
 997     {
 998         ZOOM_resultset_cache_reset(r);
 999
1000         if (r->connection)
1001         {
1002             /* remove ourselves from the resultsets in connection */
1003             ZOOM_resultset *rp = &r->connection->resultsets;
1004             while (1)
1005             {
1006                 assert(*rp);   /* we must be in this list!! */
1007                 if (*rp == r)
1008                 {   /* OK, we're here - take us out of it */
1009                     *rp = (*rp)->next;
1010                     break;
1011                 }
1012                 rp = &(*rp)->next;
1013             }
1014         }
1015         ZOOM_query_destroy(r->query);
1016         ZOOM_options_destroy(r->options);
1017         if (r->rpn_iconv)
1018             yaz_iconv_close(r->rpn_iconv);
1019         odr_destroy(r->odr);
1020         xfree(r->setname);
1021         xfree(r->schema);
1022         xfree(r);
1023     }
1024 }
1025
1026 ZOOM_API(size_t)
1027     ZOOM_resultset_size(ZOOM_resultset r)
1028 {
1029     yaz_log(log_details, "ZOOM_resultset_size r=%p count=%d",
1030             r, r->size);
1031     return r->size;
1032 }
1033
1034 static void do_close(ZOOM_connection c)
1035 {
1036     if (c->cs)
1037         cs_close(c->cs);
1038     c->cs = 0;
1039     ZOOM_connection_set_mask(c, 0);
1040     c->state = STATE_IDLE;
1041 }
1042
1043 static int ZOOM_test_reconnect(ZOOM_connection c)
1044 {
1045     ZOOM_Event event;
1046
1047     if (!c->reconnect_ok)
1048         return 0;
1049     do_close(c);
1050     c->reconnect_ok = 0;
1051     c->tasks->running = 0;
1052     ZOOM_connection_insert_task(c, ZOOM_TASK_CONNECT);
1053
1054     event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
1055     ZOOM_connection_put_event(c, event);
1056
1057     return 1;
1058 }
1059
1060 static void ZOOM_resultset_retrieve(ZOOM_resultset r,
1061                                     int force_sync, int start, int count)
1062 {
1063     ZOOM_task task;
1064     ZOOM_connection c;
1065     const char *cp;
1066     const char *syntax, *elementSetName;
1067
1068     if (!r)
1069         return;
1070     yaz_log(log_details, "%p ZOOM_resultset_retrieve force_sync=%d start=%d"
1071             " count=%d", r, force_sync, start, count);
1072     c = r->connection;
1073     if (!c)
1074         return;
1075
1076     if (c->host_port && c->proto == PROTO_HTTP)
1077     {
1078         if (!c->cs)
1079         {
1080             yaz_log(log_details, "%p ZOOM_resultset_retrieve: no comstack", r);
1081             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
1082         }
1083         else
1084         {
1085             yaz_log(log_details, "%p ZOOM_resultset_retrieve: prepare "
1086                     "reconnect", r);
1087             c->reconnect_ok = 1;
1088         }
1089     }
1090     task = ZOOM_connection_add_task(c, ZOOM_TASK_RETRIEVE);
1091     task->u.retrieve.resultset = r;
1092     task->u.retrieve.start = start;
1093     task->u.retrieve.count = count;
1094
1095     syntax = ZOOM_options_get(r->options, "preferredRecordSyntax");
1096     task->u.retrieve.syntax = syntax ? xstrdup(syntax) : 0;
1097     elementSetName = ZOOM_options_get(r->options, "elementSetName");
1098     task->u.retrieve.elementSetName = elementSetName
1099         ? xstrdup(elementSetName) : 0;
1100
1101     cp = ZOOM_options_get(r->options, "schema");
1102     if (cp)
1103     {
1104         if (!r->schema || strcmp(r->schema, cp))
1105         {
1106             xfree(r->schema);
1107             r->schema = xstrdup(cp);
1108         }
1109     }
1110
1111     ZOOM_resultset_addref(r);
1112
1113     if (!r->connection->async || force_sync)
1114         while (r->connection && ZOOM_event(1, &r->connection))
1115             ;
1116 }
1117
1118 ZOOM_API(void)
1119     ZOOM_resultset_records(ZOOM_resultset r, ZOOM_record *recs,
1120                            size_t start, size_t count)
1121 {
1122     int force_present = 0;
1123
1124     if (!r)
1125         return ;
1126     yaz_log(log_api, "%p ZOOM_resultset_records r=%p start=%ld count=%ld",
1127             r, r, (long) start, (long) count);
1128     if (count && recs)
1129         force_present = 1;
1130     ZOOM_resultset_retrieve(r, force_present, start, count);
1131     if (force_present)
1132     {
1133         size_t i;
1134         for (i = 0; i< count; i++)
1135             recs[i] = ZOOM_resultset_record_immediate(r, i+start);
1136     }
1137 }
1138
1139 static void get_cert(ZOOM_connection c)
1140 {
1141     char *cert_buf;
1142     int cert_len;
1143
1144     if (cs_get_peer_certificate_x509(c->cs, &cert_buf, &cert_len))
1145     {
1146         ZOOM_connection_option_setl(c, "sslPeerCert",
1147                                     cert_buf, cert_len);
1148         xfree(cert_buf);
1149     }
1150 }
1151
1152 static zoom_ret do_connect(ZOOM_connection c)
1153 {
1154     void *add;
1155     const char *effective_host;
1156
1157     if (c->proxy)
1158         effective_host = c->proxy;
1159     else
1160         effective_host = c->host_port;
1161
1162     yaz_log(log_details, "%p do_connect effective_host=%s", c, effective_host);
1163
1164     if (c->cs)
1165         cs_close(c->cs);
1166     c->cs = cs_create_host(effective_host, 0, &add);
1167
1168     if (c->cs && c->cs->protocol == PROTO_HTTP)
1169     {
1170 #if YAZ_HAVE_XML2
1171         const char *path = 0;
1172
1173         c->proto = PROTO_HTTP;
1174         cs_get_host_args(c->host_port, &path);
1175         xfree(c->path);
1176         c->path = (char*) xmalloc(strlen(path)+2);
1177         c->path[0] = '/';
1178         strcpy(c->path+1, path);
1179 #else
1180         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_PROTOCOL, "SRW");
1181         do_close(c);
1182         return zoom_complete;
1183 #endif
1184     }
1185     if (c->cs)
1186     {
1187         int ret = cs_connect(c->cs, add);
1188         if (ret == 0)
1189         {
1190             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
1191             ZOOM_connection_put_event(c, event);
1192             get_cert(c);
1193             if (c->proto == PROTO_Z3950)
1194                 ZOOM_connection_send_init(c);
1195             else
1196             {
1197                 /* no init request for SRW .. */
1198                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
1199                 ZOOM_connection_remove_task(c);
1200                 ZOOM_connection_set_mask(c, 0);
1201                 ZOOM_connection_exec_task(c);
1202             }
1203             c->state = STATE_ESTABLISHED;
1204             return zoom_pending;
1205         }
1206         else if (ret > 0)
1207         {
1208             int mask = ZOOM_SELECT_EXCEPT;
1209             if (c->cs->io_pending & CS_WANT_WRITE)
1210                 mask += ZOOM_SELECT_WRITE;
1211             if (c->cs->io_pending & CS_WANT_READ)
1212                 mask += ZOOM_SELECT_READ;
1213             ZOOM_connection_set_mask(c, mask);
1214             c->state = STATE_CONNECTING;
1215             return zoom_pending;
1216         }
1217     }
1218     c->state = STATE_IDLE;
1219     set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
1220     return zoom_complete;
1221 }
1222
1223 static void otherInfo_attach(ZOOM_connection c, Z_APDU *a, ODR out)
1224 {
1225     int i;
1226     for (i = 0; i<200; i++)
1227     {
1228         size_t len;
1229         Odr_oid *oid;
1230         Z_OtherInformation **oi;
1231         char buf[80];
1232         const char *val;
1233         const char *cp;
1234
1235         sprintf(buf, "otherInfo%d", i);
1236         val = ZOOM_options_get(c->options, buf);
1237         if (!val)
1238             break;
1239         cp = strchr(val, ':');
1240         if (!cp)
1241             continue;
1242         len = cp - val;
1243         if (len >= sizeof(buf))
1244             len = sizeof(buf)-1;
1245         memcpy(buf, val, len);
1246         buf[len] = '\0';
1247
1248         oid = yaz_string_to_oid_odr(yaz_oid_std(), CLASS_USERINFO,
1249                                     buf, out);
1250         if (!oid)
1251             continue;
1252
1253         yaz_oi_APDU(a, &oi);
1254         yaz_oi_set_string_oid(oi, out, oid, 1, cp+1);
1255     }
1256 }
1257
1258 static int encode_APDU(ZOOM_connection c, Z_APDU *a, ODR out)
1259 {
1260     assert(a);
1261     if (c->cookie_out)
1262     {
1263         Z_OtherInformation **oi;
1264         yaz_oi_APDU(a, &oi);
1265         yaz_oi_set_string_oid(oi, out, yaz_oid_userinfo_cookie,
1266                               1, c->cookie_out);
1267     }
1268     if (c->client_IP)
1269     {
1270         Z_OtherInformation **oi;
1271         yaz_oi_APDU(a, &oi);
1272         yaz_oi_set_string_oid(oi, out, yaz_oid_userinfo_client_ip,
1273                               1, c->client_IP);
1274     }
1275     otherInfo_attach(c, a, out);
1276     if (!z_APDU(out, &a, 0, 0))
1277     {
1278         FILE *outf = fopen("/tmp/apdu.txt", "a");
1279         if (a && outf)
1280         {
1281             ODR odr_pr = odr_createmem(ODR_PRINT);
1282             fprintf(outf, "a=%p\n", a);
1283             odr_setprint(odr_pr, outf);
1284             z_APDU(odr_pr, &a, 0, 0);
1285             odr_destroy(odr_pr);
1286         }
1287         yaz_log(log_api, "%p encoding_APDU: encoding failed", c);
1288         set_ZOOM_error(c, ZOOM_ERROR_ENCODE, 0);
1289         odr_reset(out);
1290         return -1;
1291     }
1292     yaz_log(log_details, "%p encoding_APDU encoding OK", c);
1293     return 0;
1294 }
1295
1296 static zoom_ret send_APDU(ZOOM_connection c, Z_APDU *a)
1297 {
1298     ZOOM_Event event;
1299     assert(a);
1300     if (encode_APDU(c, a, c->odr_out))
1301         return zoom_complete;
1302     yaz_log(log_details, "%p send APDU type=%d", c, a->which);
1303     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1304     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
1305     ZOOM_connection_put_event(c, event);
1306     odr_reset(c->odr_out);
1307     return do_write(c);
1308 }
1309
1310 /* returns 1 if PDU was sent OK (still pending )
1311    0 if PDU was not sent OK (nothing to wait for)
1312 */
1313
1314 static zoom_ret ZOOM_connection_send_init(ZOOM_connection c)
1315 {
1316     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_initRequest);
1317     Z_InitRequest *ireq = apdu->u.initRequest;
1318     Z_IdAuthentication *auth = (Z_IdAuthentication *)
1319         odr_malloc(c->odr_out, sizeof(*auth));
1320     char *version;
1321
1322     ODR_MASK_SET(ireq->options, Z_Options_search);
1323     ODR_MASK_SET(ireq->options, Z_Options_present);
1324     ODR_MASK_SET(ireq->options, Z_Options_scan);
1325     ODR_MASK_SET(ireq->options, Z_Options_sort);
1326     ODR_MASK_SET(ireq->options, Z_Options_extendedServices);
1327     ODR_MASK_SET(ireq->options, Z_Options_namedResultSets);
1328
1329     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_1);
1330     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_2);
1331     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_3);
1332
1333     /* Index Data's Z39.50 Implementor Id is 81 */
1334     ireq->implementationId =
1335         odr_prepend(c->odr_out,
1336                     ZOOM_options_get(c->options, "implementationId"),
1337                     odr_prepend(c->odr_out, "81", ireq->implementationId));
1338
1339     ireq->implementationName =
1340         odr_prepend(c->odr_out,
1341                     ZOOM_options_get(c->options, "implementationName"),
1342                     odr_prepend(c->odr_out, "ZOOM-C",
1343                                 ireq->implementationName));
1344
1345     version = odr_strdup(c->odr_out, "$Revision: 1.139 $");
1346     if (strlen(version) > 10)   /* check for unexpanded CVS strings */
1347         version[strlen(version)-2] = '\0';
1348     ireq->implementationVersion =
1349         odr_prepend(c->odr_out,
1350                     ZOOM_options_get(c->options, "implementationVersion"),
1351                     odr_prepend(c->odr_out, &version[11],
1352                                 ireq->implementationVersion));
1353
1354     *ireq->maximumRecordSize = c->maximum_record_size;
1355     *ireq->preferredMessageSize = c->preferred_message_size;
1356
1357     if (c->group || c->password)
1358     {
1359         Z_IdPass *pass = (Z_IdPass *) odr_malloc(c->odr_out, sizeof(*pass));
1360         pass->groupId = 0;
1361         if (c->group)
1362             pass->groupId = odr_strdup(c->odr_out, c->group);
1363         pass->userId = 0;
1364         if (c->user)
1365             pass->userId = odr_strdup(c->odr_out, c->user);
1366         pass->password = 0;
1367         if (c->password)
1368             pass->password = odr_strdup(c->odr_out, c->password);
1369         auth->which = Z_IdAuthentication_idPass;
1370         auth->u.idPass = pass;
1371         ireq->idAuthentication = auth;
1372     }
1373     else if (c->user)
1374     {
1375         auth->which = Z_IdAuthentication_open;
1376         auth->u.open = odr_strdup(c->odr_out, c->user);
1377         ireq->idAuthentication = auth;
1378     }
1379     if (c->proxy)
1380     {
1381         yaz_oi_set_string_oid(&ireq->otherInfo, c->odr_out,
1382                               yaz_oid_userinfo_proxy, 1, c->host_port);
1383     }
1384     if (c->charset || c->lang)
1385     {
1386         Z_OtherInformation **oi;
1387         Z_OtherInformationUnit *oi_unit;
1388
1389         yaz_oi_APDU(apdu, &oi);
1390
1391         if ((oi_unit = yaz_oi_update(oi, c->odr_out, NULL, 0, 0)))
1392         {
1393             ODR_MASK_SET(ireq->options, Z_Options_negotiationModel);
1394             oi_unit->which = Z_OtherInfo_externallyDefinedInfo;
1395             oi_unit->information.externallyDefinedInfo =
1396                 yaz_set_proposal_charneg_list(c->odr_out, " ",
1397                                               c->charset, c->lang, 1);
1398         }
1399     }
1400     assert(apdu);
1401     return send_APDU(c, apdu);
1402 }
1403
1404 #if YAZ_HAVE_XML2
1405 static zoom_ret send_srw(ZOOM_connection c, Z_SRW_PDU *sr)
1406 {
1407     Z_GDU *gdu;
1408     ZOOM_Event event;
1409
1410     gdu = z_get_HTTP_Request_host_path(c->odr_out, c->host_port, c->path);
1411
1412     if (c->sru_mode == zoom_sru_get)
1413     {
1414         yaz_sru_get_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1415     }
1416     else if (c->sru_mode == zoom_sru_post)
1417     {
1418         yaz_sru_post_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1419     }
1420     else if (c->sru_mode == zoom_sru_soap)
1421     {
1422         yaz_sru_soap_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1423     }
1424     if (!z_GDU(c->odr_out, &gdu, 0, 0))
1425         return zoom_complete;
1426     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1427
1428     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
1429     ZOOM_connection_put_event(c, event);
1430     odr_reset(c->odr_out);
1431     return do_write(c);
1432 }
1433 #endif
1434
1435 #if YAZ_HAVE_XML2
1436 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1437 {
1438     int i;
1439     int *start, *count;
1440     ZOOM_resultset resultset = 0;
1441     Z_SRW_PDU *sr = 0;
1442     const char *option_val = 0;
1443
1444     if (c->error)                  /* don't continue on error */
1445         return zoom_complete;
1446     assert(c->tasks);
1447     switch(c->tasks->which)
1448     {
1449     case ZOOM_TASK_SEARCH:
1450         resultset = c->tasks->u.search.resultset;
1451         resultset->setname = xstrdup("default");
1452         ZOOM_options_set(resultset->options, "setname", resultset->setname);
1453         start = &c->tasks->u.search.start;
1454         count = &c->tasks->u.search.count;
1455         break;
1456     case ZOOM_TASK_RETRIEVE:
1457         resultset = c->tasks->u.retrieve.resultset;
1458
1459         start = &c->tasks->u.retrieve.start;
1460         count = &c->tasks->u.retrieve.count;
1461
1462         if (*start >= resultset->size)
1463             return zoom_complete;
1464         if (*start + *count > resultset->size)
1465             *count = resultset->size - *start;
1466
1467         for (i = 0; i < *count; i++)
1468         {
1469             ZOOM_record rec =
1470                 record_cache_lookup(resultset, i + *start,
1471                                     c->tasks->u.retrieve.syntax,
1472                                     c->tasks->u.retrieve.elementSetName);
1473             if (!rec)
1474                 break;
1475             else
1476             {
1477                 ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
1478                 ZOOM_connection_put_event(c, event);
1479             }
1480         }
1481         *start += i;
1482         *count -= i;
1483
1484         if (*count == 0)
1485             return zoom_complete;
1486         break;
1487     default:
1488         return zoom_complete;
1489     }
1490     assert(resultset->query);
1491
1492     sr = yaz_srw_get(c->odr_out, Z_SRW_searchRetrieve_request);
1493
1494     if (resultset->query->z_query->which == Z_Query_type_104
1495         && resultset->query->z_query->u.type_104->which == Z_External_CQL)
1496     {
1497         sr->u.request->query_type = Z_SRW_query_type_cql;
1498         sr->u.request->query.cql =resultset->query->z_query->u.type_104->u.cql;
1499     }
1500     else if (resultset->query->z_query->which == Z_Query_type_1 &&
1501              resultset->query->z_query->u.type_1)
1502     {
1503         sr->u.request->query_type = Z_SRW_query_type_pqf;
1504         sr->u.request->query.pqf = resultset->query->query_string;
1505     }
1506     else
1507     {
1508         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
1509         return zoom_complete;
1510     }
1511     sr->u.request->startRecord = odr_intdup(c->odr_out, *start + 1);
1512     sr->u.request->maximumRecords = odr_intdup(
1513         c->odr_out, resultset->step>0 ? resultset->step : *count);
1514     sr->u.request->recordSchema = resultset->schema;
1515
1516     option_val = ZOOM_resultset_option_get(resultset, "recordPacking");
1517     if (option_val)
1518         sr->u.request->recordPacking = odr_strdup(c->odr_out, option_val);
1519
1520     option_val = ZOOM_resultset_option_get(resultset, "extraArgs");
1521     if (option_val)
1522         sr->extra_args = odr_strdup(c->odr_out, option_val);
1523     return send_srw(c, sr);
1524 }
1525 #else
1526 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1527 {
1528     return zoom_complete;
1529 }
1530 #endif
1531
1532 static zoom_ret ZOOM_connection_send_search(ZOOM_connection c)
1533 {
1534     ZOOM_resultset r;
1535     int lslb, ssub, mspn;
1536     const char *syntax;
1537     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_searchRequest);
1538     Z_SearchRequest *search_req = apdu->u.searchRequest;
1539     const char *elementSetName;
1540     const char *smallSetElementSetName;
1541     const char *mediumSetElementSetName;
1542
1543     assert(c->tasks);
1544     assert(c->tasks->which == ZOOM_TASK_SEARCH);
1545
1546     r = c->tasks->u.search.resultset;
1547
1548     yaz_log(log_details, "%p ZOOM_connection_send_search set=%p", c, r);
1549
1550     elementSetName =
1551         ZOOM_options_get(r->options, "elementSetName");
1552     smallSetElementSetName  =
1553         ZOOM_options_get(r->options, "smallSetElementSetName");
1554     mediumSetElementSetName =
1555         ZOOM_options_get(r->options, "mediumSetElementSetName");
1556
1557     if (!smallSetElementSetName)
1558         smallSetElementSetName = elementSetName;
1559
1560     if (!mediumSetElementSetName)
1561         mediumSetElementSetName = elementSetName;
1562
1563     assert(r);
1564     assert(r->query);
1565
1566     /* prepare query for the search request */
1567     search_req->query = r->query->z_query;
1568     if (!search_req->query)
1569     {
1570         set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
1571         return zoom_complete;
1572     }
1573     if (r->query->z_query->which == Z_Query_type_1 && r->rpn_iconv)
1574     {
1575         search_req->query = yaz_copy_Z_Query(r->query->z_query, c->odr_out);
1576
1577         yaz_query_charset_convert_rpnquery(search_req->query->u.type_1,
1578                                            c->odr_out, r->rpn_iconv);
1579     }
1580     search_req->databaseNames = r->databaseNames;
1581     search_req->num_databaseNames = r->num_databaseNames;
1582
1583     /* get syntax (no need to provide unless piggyback is in effect) */
1584     syntax = c->tasks->u.search.syntax;
1585
1586     lslb = ZOOM_options_get_int(r->options, "largeSetLowerBound", -1);
1587     ssub = ZOOM_options_get_int(r->options, "smallSetUpperBound", -1);
1588     mspn = ZOOM_options_get_int(r->options, "mediumSetPresentNumber", -1);
1589     if (lslb != -1 && ssub != -1 && mspn != -1)
1590     {
1591         /* So're a Z39.50 expert? Let's hope you don't do sort */
1592         *search_req->largeSetLowerBound = lslb;
1593         *search_req->smallSetUpperBound = ssub;
1594         *search_req->mediumSetPresentNumber = mspn;
1595     }
1596     else if (c->tasks->u.search.start == 0 && c->tasks->u.search.count > 0
1597              && r->piggyback && !r->r_sort_spec && !r->schema)
1598     {
1599         /* Regular piggyback - do it unless we're going to do sort */
1600         *search_req->largeSetLowerBound = 2000000000;
1601         *search_req->smallSetUpperBound = 1;
1602         *search_req->mediumSetPresentNumber =
1603             r->step>0 ? r->step : c->tasks->u.search.count;
1604     }
1605     else
1606     {
1607         /* non-piggyback. Need not provide elementsets or syntaxes .. */
1608         smallSetElementSetName = 0;
1609         mediumSetElementSetName = 0;
1610         syntax = 0;
1611     }
1612     if (smallSetElementSetName && *smallSetElementSetName)
1613     {
1614         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1615             odr_malloc(c->odr_out, sizeof(*esn));
1616
1617         esn->which = Z_ElementSetNames_generic;
1618         esn->u.generic = odr_strdup(c->odr_out, smallSetElementSetName);
1619         search_req->smallSetElementSetNames = esn;
1620     }
1621     if (mediumSetElementSetName && *mediumSetElementSetName)
1622     {
1623         Z_ElementSetNames *esn =(Z_ElementSetNames *)
1624             odr_malloc(c->odr_out, sizeof(*esn));
1625
1626         esn->which = Z_ElementSetNames_generic;
1627         esn->u.generic = odr_strdup(c->odr_out, mediumSetElementSetName);
1628         search_req->mediumSetElementSetNames = esn;
1629     }
1630     if (syntax)
1631         search_req->preferredRecordSyntax =
1632             zoom_yaz_str_to_z3950oid(c, CLASS_RECSYN, syntax);
1633
1634     if (!r->setname)
1635     {
1636         if (c->support_named_resultsets)
1637         {
1638             char setname[14];
1639             int ord;
1640             /* find the lowest unused ordinal so that we re-use
1641                result sets on the server. */
1642             for (ord = 1; ; ord++)
1643             {
1644                 ZOOM_resultset rp;
1645                 sprintf(setname, "%d", ord);
1646                 for (rp = c->resultsets; rp; rp = rp->next)
1647                     if (rp->setname && !strcmp(rp->setname, setname))
1648                         break;
1649                 if (!rp)
1650                     break;
1651             }
1652             r->setname = xstrdup(setname);
1653             yaz_log(log_details, "%p ZOOM_connection_send_search: allocating "
1654                     "set %s", c, r->setname);
1655         }
1656         else
1657         {
1658             yaz_log(log_details, "%p ZOOM_connection_send_search: using "
1659                     "default set", c);
1660             r->setname = xstrdup("default");
1661         }
1662         ZOOM_options_set(r->options, "setname", r->setname);
1663     }
1664     search_req->resultSetName = odr_strdup(c->odr_out, r->setname);
1665     return send_APDU(c, apdu);
1666 }
1667
1668 static void response_default_diag(ZOOM_connection c, Z_DefaultDiagFormat *r)
1669 {
1670     char oid_name_buf[OID_STR_MAX];
1671     const char *oid_name;
1672     char *addinfo = 0;
1673
1674     oid_name = yaz_oid_to_string_buf(r->diagnosticSetId, 0, oid_name_buf);
1675     switch (r->which)
1676     {
1677     case Z_DefaultDiagFormat_v2Addinfo:
1678         addinfo = r->u.v2Addinfo;
1679         break;
1680     case Z_DefaultDiagFormat_v3Addinfo:
1681         addinfo = r->u.v3Addinfo;
1682         break;
1683     }
1684     xfree(c->addinfo);
1685     c->addinfo = 0;
1686     set_dset_error(c, *r->condition, oid_name, addinfo, 0);
1687 }
1688
1689 static void response_diag(ZOOM_connection c, Z_DiagRec *p)
1690 {
1691     if (p->which != Z_DiagRec_defaultFormat)
1692         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1693     else
1694         response_default_diag(c, p->u.defaultFormat);
1695 }
1696
1697 ZOOM_API(ZOOM_record)
1698     ZOOM_record_clone(ZOOM_record srec)
1699 {
1700     char *buf;
1701     int size;
1702     ODR odr_enc;
1703     ZOOM_record nrec;
1704
1705     odr_enc = odr_createmem(ODR_ENCODE);
1706     if (!z_NamePlusRecord(odr_enc, &srec->npr, 0, 0))
1707         return 0;
1708     buf = odr_getbuf(odr_enc, &size, 0);
1709
1710     nrec = (ZOOM_record) xmalloc(sizeof(*nrec));
1711     nrec->odr = odr_createmem(ODR_DECODE);
1712     nrec->wrbuf_marc = 0;
1713     nrec->wrbuf_iconv = 0;
1714     nrec->wrbuf_opac = 0;
1715     odr_setbuf(nrec->odr, buf, size, 0);
1716     z_NamePlusRecord(nrec->odr, &nrec->npr, 0, 0);
1717
1718     odr_destroy(odr_enc);
1719     return nrec;
1720 }
1721
1722 ZOOM_API(ZOOM_record)
1723     ZOOM_resultset_record_immediate(ZOOM_resultset s,size_t pos)
1724 {
1725     const char *syntax =
1726         ZOOM_options_get(s->options, "preferredRecordSyntax");
1727     const char *elementSetName =
1728         ZOOM_options_get(s->options, "elementSetName");
1729
1730     return record_cache_lookup(s, pos, syntax, elementSetName);
1731 }
1732
1733 ZOOM_API(ZOOM_record)
1734     ZOOM_resultset_record(ZOOM_resultset r, size_t pos)
1735 {
1736     ZOOM_record rec = ZOOM_resultset_record_immediate(r, pos);
1737
1738     if (!rec)
1739     {
1740         /*
1741          * MIKE: I think force_sync should always be zero, but I don't
1742          * want to make this change until I get the go-ahead from
1743          * Adam, in case something depends on the old synchronous
1744          * behaviour.
1745          */
1746         int force_sync = 1;
1747         if (getenv("ZOOM_RECORD_NO_FORCE_SYNC")) force_sync = 0;
1748         ZOOM_resultset_retrieve(r, force_sync, pos, 1);
1749         rec = ZOOM_resultset_record_immediate(r, pos);
1750     }
1751     return rec;
1752 }
1753
1754 ZOOM_API(void)
1755     ZOOM_record_destroy(ZOOM_record rec)
1756 {
1757     if (!rec)
1758         return;
1759     if (rec->wrbuf_marc)
1760         wrbuf_destroy(rec->wrbuf_marc);
1761     if (rec->wrbuf_iconv)
1762         wrbuf_destroy(rec->wrbuf_iconv);
1763     if (rec->wrbuf_opac)
1764         wrbuf_destroy(rec->wrbuf_opac);
1765     odr_destroy(rec->odr);
1766     xfree(rec);
1767 }
1768
1769 static const char *marc_iconv_return(ZOOM_record rec, int marc_type,
1770                                      int *len,
1771                                      const char *buf, int sz,
1772                                      const char *record_charset)
1773 {
1774     char to[40];
1775     char from[40];
1776     yaz_iconv_t cd = 0;
1777     yaz_marc_t mt = yaz_marc_create();
1778
1779     *from = '\0';
1780     strcpy(to, "UTF-8");
1781     if (record_charset && *record_charset)
1782     {
1783         /* Use "from,to" or just "from" */
1784         const char *cp = strchr(record_charset, ',');
1785         int clen = strlen(record_charset);
1786         if (cp && cp[1])
1787         {
1788             strncpy( to, cp+1, sizeof(to)-1);
1789             to[sizeof(to)-1] = '\0';
1790             clen = cp - record_charset;
1791         }
1792         if (clen > sizeof(from)-1)
1793             clen = sizeof(from)-1;
1794
1795         if (clen)
1796             strncpy(from, record_charset, clen);
1797         from[clen] = '\0';
1798     }
1799
1800     if (*from && *to)
1801     {
1802         cd = yaz_iconv_open(to, from);
1803         yaz_marc_iconv(mt, cd);
1804     }
1805
1806     yaz_marc_xml(mt, marc_type);
1807     if (!rec->wrbuf_marc)
1808         rec->wrbuf_marc = wrbuf_alloc();
1809     wrbuf_rewind(rec->wrbuf_marc);
1810     if (yaz_marc_decode_wrbuf(mt, buf, sz, rec->wrbuf_marc) > 0)
1811     {
1812         yaz_marc_destroy(mt);
1813         if (cd)
1814             yaz_iconv_close(cd);
1815         if (len)
1816             *len = wrbuf_len(rec->wrbuf_marc);
1817         return wrbuf_cstr(rec->wrbuf_marc);
1818     }
1819     yaz_marc_destroy(mt);
1820     if (cd)
1821         yaz_iconv_close(cd);
1822     return 0;
1823 }
1824
1825 static const char *record_iconv_return(ZOOM_record rec, int *len,
1826                                        const char *buf, int sz,
1827                                        const char *record_charset)
1828 {
1829     char to[40];
1830     char from[40];
1831     yaz_iconv_t cd = 0;
1832
1833     *from = '\0';
1834     strcpy(to, "UTF-8");
1835
1836     if (record_charset && *record_charset)
1837     {
1838         /* Use "from,to" or just "from" */
1839         const char *cp = strchr(record_charset, ',');
1840         int clen = strlen(record_charset);
1841         if (cp && cp[1])
1842         {
1843             strncpy( to, cp+1, sizeof(to)-1);
1844             to[sizeof(to)-1] = '\0';
1845             clen = cp - record_charset;
1846         }
1847         if (clen > sizeof(from)-1)
1848             clen = sizeof(from)-1;
1849
1850         if (clen)
1851             strncpy(from, record_charset, clen);
1852         from[clen] = '\0';
1853     }
1854
1855     if (*from && *to && (cd = yaz_iconv_open(to, from)))
1856     {
1857         if (!rec->wrbuf_iconv)
1858             rec->wrbuf_iconv = wrbuf_alloc();
1859
1860         wrbuf_rewind(rec->wrbuf_iconv);
1861
1862         wrbuf_iconv_write(rec->wrbuf_iconv, cd, buf, sz);
1863         wrbuf_iconv_reset(rec->wrbuf_iconv, cd);
1864
1865         buf = wrbuf_cstr(rec->wrbuf_iconv);
1866         sz = wrbuf_len(rec->wrbuf_iconv);
1867         yaz_iconv_close(cd);
1868     }
1869     if (len)
1870         *len = sz;
1871     return buf;
1872 }
1873
1874 ZOOM_API(int)
1875     ZOOM_record_error(ZOOM_record rec, const char **cp,
1876                       const char **addinfo, const char **diagset)
1877 {
1878     Z_NamePlusRecord *npr;
1879
1880     if (!rec)
1881         return 0;
1882     npr = rec->npr;
1883     if (npr && npr->which == Z_NamePlusRecord_surrogateDiagnostic)
1884     {
1885         Z_DiagRec *diag_rec = npr->u.surrogateDiagnostic;
1886         int error = YAZ_BIB1_UNSPECIFIED_ERROR;
1887         const char *add = 0;
1888
1889         if (diag_rec->which == Z_DiagRec_defaultFormat)
1890         {
1891             Z_DefaultDiagFormat *ddf = diag_rec->u.defaultFormat;
1892             oid_class oclass;
1893
1894             error = *ddf->condition;
1895             switch (ddf->which)
1896             {
1897             case Z_DefaultDiagFormat_v2Addinfo:
1898                 add = ddf->u.v2Addinfo;
1899                 break;
1900             case Z_DefaultDiagFormat_v3Addinfo:
1901                 add = ddf->u.v3Addinfo;
1902                 break;
1903             }
1904             if (diagset)
1905                 *diagset =
1906                     yaz_oid_to_string(yaz_oid_std(),
1907                                       ddf->diagnosticSetId, &oclass);
1908         }
1909         else
1910         {
1911             if (diagset)
1912                 *diagset = "Bib-1";
1913         }
1914         if (addinfo)
1915             *addinfo = add ? add : "";
1916         if (cp)
1917             *cp = diagbib1_str(error);
1918         return error;
1919     }
1920     return 0;
1921 }
1922
1923 ZOOM_API(const char *)
1924     ZOOM_record_get(ZOOM_record rec, const char *type_spec, int *len)
1925 {
1926     char type[40];
1927     char charset[40];
1928     char xpath[512];
1929     const char *cp;
1930     int i;
1931     Z_NamePlusRecord *npr;
1932
1933     if (len)
1934         *len = 0; /* default return */
1935
1936     if (!rec)
1937         return 0;
1938     npr = rec->npr;
1939     if (!npr)
1940         return 0;
1941
1942     cp = type_spec;
1943     for (i = 0; cp[i] && i < sizeof(type)-1; i++)
1944     {
1945         if (cp[i] == ';' || cp[i] == ' ')
1946             break;
1947         type[i] = cp[i];
1948     }
1949     type[i] = '\0';
1950     charset[0] = '\0';
1951     while (type_spec[i] == ';')
1952     {
1953         i++;
1954         while (type_spec[i] == ' ')
1955             i++;
1956         if (!strncmp(type_spec+i, "charset=", 8))
1957         {
1958             int j = 0;
1959             i = i + 8; /* skip charset= */
1960             for (j = 0; type_spec[i]  && j < sizeof(charset)-1; i++, j++)
1961             {
1962                 if (type_spec[i] == ';' || type_spec[i] == ' ')
1963                     break;
1964                 charset[j] = cp[i];
1965             }
1966             charset[j] = '\0';
1967         }
1968         else if (!strncmp(type_spec+i, "xpath=", 6))
1969         {
1970             int j = 0;
1971             i = i + 6;
1972             for (j = 0; type_spec[i] && j < sizeof(xpath)-1; i++, j++)
1973                 xpath[j] = cp[i];
1974             xpath[j] = '\0';
1975         }
1976         while (type_spec[i] == ' ')
1977             i++;
1978     }
1979     if (!strcmp(type, "database"))
1980     {
1981         if (len)
1982             *len = (npr->databaseName ? strlen(npr->databaseName) : 0);
1983         return npr->databaseName;
1984     }
1985     else if (!strcmp(type, "syntax"))
1986     {
1987         const char *desc = 0;
1988         if (npr->which == Z_NamePlusRecord_databaseRecord)
1989         {
1990             Z_External *r = (Z_External *) npr->u.databaseRecord;
1991             desc = yaz_oid_to_string(yaz_oid_std(), r->direct_reference, 0);
1992         }
1993         if (!desc)
1994             desc = "none";
1995         if (len)
1996             *len = strlen(desc);
1997         return desc;
1998     }
1999     if (npr->which != Z_NamePlusRecord_databaseRecord)
2000         return 0;
2001
2002     /* from now on - we have a database record .. */
2003     if (!strcmp(type, "render"))
2004     {
2005         Z_External *r = (Z_External *) npr->u.databaseRecord;
2006         const Odr_oid *oid = r->direct_reference;
2007
2008         /* render bibliographic record .. */
2009         if (r->which == Z_External_OPAC)
2010         {
2011             r = r->u.opac->bibliographicRecord;
2012             if (!r)
2013                 return 0;
2014             oid = r->direct_reference;
2015         }
2016         if (r->which == Z_External_sutrs)
2017             return record_iconv_return(rec, len,
2018                                        (char*) r->u.sutrs->buf,
2019                                        r->u.sutrs->len,
2020                                        charset);
2021         else if (r->which == Z_External_octet)
2022         {
2023             if (yaz_oid_is_iso2709(oid))
2024             {
2025                 const char *ret_buf = marc_iconv_return(
2026                     rec, YAZ_MARC_LINE, len,
2027                     (const char *) r->u.octet_aligned->buf,
2028                     r->u.octet_aligned->len,
2029                     charset);
2030                 if (ret_buf)
2031                     return ret_buf;
2032             }
2033             return record_iconv_return(rec, len,
2034                                        (const char *) r->u.octet_aligned->buf,
2035                                        r->u.octet_aligned->len,
2036                                        charset);
2037         }
2038         else if (r->which == Z_External_grs1)
2039         {
2040             if (!rec->wrbuf_marc)
2041                 rec->wrbuf_marc = wrbuf_alloc();
2042             wrbuf_rewind(rec->wrbuf_marc);
2043             yaz_display_grs1(rec->wrbuf_marc, r->u.grs1, 0);
2044             return record_iconv_return(rec, len,
2045                                        wrbuf_buf(rec->wrbuf_marc),
2046                                        wrbuf_len(rec->wrbuf_marc),
2047                                        charset);
2048         }
2049         return 0;
2050     }
2051     else if (!strcmp(type, "xml"))
2052     {
2053         Z_External *r = (Z_External *) npr->u.databaseRecord;
2054         const Odr_oid *oid = r->direct_reference;
2055
2056         /* render bibliographic record .. */
2057         if (r->which == Z_External_OPAC)
2058         {
2059             r = r->u.opac->bibliographicRecord;
2060             if (!r)
2061                 return 0;
2062             oid = r->direct_reference;
2063         }
2064
2065         if (r->which == Z_External_sutrs)
2066             return record_iconv_return(rec, len,
2067                                        (const char *) r->u.sutrs->buf,
2068                                        r->u.sutrs->len,
2069                                        charset);
2070         else if (r->which == Z_External_octet)
2071         {
2072             int marc_decode_type = YAZ_MARC_MARCXML;
2073             if (yaz_oid_is_iso2709(oid))
2074             {
2075                 const char *ret_buf = marc_iconv_return(
2076                     rec, marc_decode_type, len,
2077                     (const char *) r->u.octet_aligned->buf,
2078                     r->u.octet_aligned->len,
2079                     charset);
2080                 if (ret_buf)
2081                     return ret_buf;
2082             }
2083             return record_iconv_return(rec, len,
2084                                        (const char *) r->u.octet_aligned->buf,
2085                                        r->u.octet_aligned->len,
2086                                        charset);
2087         }
2088         else if (r->which == Z_External_grs1)
2089         {
2090             if (len) *len = 5;
2091             return "GRS-1";
2092         }
2093         return 0;
2094     }
2095     else if (!strcmp(type, "raw"))
2096     {
2097         Z_External *r = (Z_External *) npr->u.databaseRecord;
2098
2099         if (r->which == Z_External_sutrs)
2100         {
2101             if (len) *len = r->u.sutrs->len;
2102             return (const char *) r->u.sutrs->buf;
2103         }
2104         else if (r->which == Z_External_octet)
2105         {
2106             if (len) *len = r->u.octet_aligned->len;
2107             return (const char *) r->u.octet_aligned->buf;
2108         }
2109         else /* grs-1, explain, OPAC, ... */
2110         {
2111             if (len) *len = -1;
2112             return (const char *) npr->u.databaseRecord;
2113         }
2114         return 0;
2115     }
2116     else if (!strcmp (type, "ext"))
2117     {
2118         if (len) *len = -1;
2119         return (const char *) npr->u.databaseRecord;
2120     }
2121     else if (!strcmp (type, "opac"))
2122
2123     {
2124         Z_External *r = (Z_External *) npr->u.databaseRecord;
2125         if (r->which == Z_External_OPAC)
2126         {
2127             if (!rec->wrbuf_opac)
2128                 rec->wrbuf_opac = wrbuf_alloc();
2129             wrbuf_rewind(rec->wrbuf_opac);
2130             yaz_display_OPAC(rec->wrbuf_opac, r->u.opac, 0);
2131             return record_iconv_return(rec, len,
2132                                        wrbuf_buf(rec->wrbuf_opac),
2133                                        wrbuf_len(rec->wrbuf_opac),
2134                                        charset);
2135         }
2136     }
2137     return 0;
2138 }
2139
2140 static int strcmp_null(const char *v1, const char *v2)
2141 {
2142     if (!v1 && !v2)
2143         return 0;
2144     if (!v1 || !v2)
2145         return -1;
2146     return strcmp(v1, v2);
2147 }
2148
2149 static size_t record_hash(int pos)
2150 {
2151     if (pos < 0)
2152         pos = 0;
2153     return pos % RECORD_HASH_SIZE;
2154 }
2155
2156 static void record_cache_add(ZOOM_resultset r, Z_NamePlusRecord *npr,
2157                              int pos,
2158                              const char *syntax, const char *elementSetName)
2159 {
2160     ZOOM_record_cache rc;
2161
2162     ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
2163     ZOOM_connection_put_event(r->connection, event);
2164
2165     for (rc = r->record_hash[record_hash(pos)]; rc; rc = rc->next)
2166     {
2167         if (pos == rc->pos)
2168         {
2169             if (strcmp_null(r->schema, rc->schema))
2170                 continue;
2171             if (strcmp_null(elementSetName,rc->elementSetName))
2172                 continue;
2173             if (strcmp_null(syntax, rc->syntax))
2174                 continue;
2175             /* not destroying rc->npr (it's handled by nmem )*/
2176             rc->rec.npr = npr;
2177             /* keeping wrbuf_marc too */
2178             return;
2179         }
2180     }
2181     rc = (ZOOM_record_cache) odr_malloc(r->odr, sizeof(*rc));
2182     rc->rec.npr = npr;
2183     rc->rec.odr = 0;
2184     rc->rec.wrbuf_marc = 0;
2185     rc->rec.wrbuf_iconv = 0;
2186     rc->rec.wrbuf_opac = 0;
2187     if (elementSetName)
2188         rc->elementSetName = odr_strdup(r->odr, elementSetName);
2189     else
2190         rc->elementSetName = 0;
2191
2192     if (syntax)
2193         rc->syntax = odr_strdup(r->odr, syntax);
2194     else
2195         rc->syntax = 0;
2196
2197     if (r->schema)
2198         rc->schema = odr_strdup(r->odr, r->schema);
2199     else
2200         rc->schema = 0;
2201
2202     rc->pos = pos;
2203     rc->next = r->record_hash[record_hash(pos)];
2204     r->record_hash[record_hash(pos)] = rc;
2205 }
2206
2207 static ZOOM_record record_cache_lookup(ZOOM_resultset r, int pos,
2208                                        const char *syntax,
2209                                        const char *elementSetName)
2210 {
2211     ZOOM_record_cache rc;
2212
2213     for (rc = r->record_hash[record_hash(pos)]; rc; rc = rc->next)
2214     {
2215         if (pos == rc->pos)
2216         {
2217             if (strcmp_null(r->schema, rc->schema))
2218                 continue;
2219             if (strcmp_null(elementSetName,rc->elementSetName))
2220                 continue;
2221             if (strcmp_null(syntax, rc->syntax))
2222                 continue;
2223             return &rc->rec;
2224         }
2225     }
2226     return 0;
2227 }
2228
2229 static void handle_records(ZOOM_connection c, Z_Records *sr,
2230                            int present_phase)
2231 {
2232     ZOOM_resultset resultset;
2233     int *start, *count;
2234     const char *syntax = 0, *elementSetName = 0;
2235
2236     if (!c->tasks)
2237         return ;
2238     switch (c->tasks->which)
2239     {
2240     case ZOOM_TASK_SEARCH:
2241         resultset = c->tasks->u.search.resultset;
2242         start = &c->tasks->u.search.start;
2243         count = &c->tasks->u.search.count;
2244         syntax = c->tasks->u.search.syntax;
2245         elementSetName = c->tasks->u.search.elementSetName;
2246         break;
2247     case ZOOM_TASK_RETRIEVE:
2248         resultset = c->tasks->u.retrieve.resultset;
2249         start = &c->tasks->u.retrieve.start;
2250         count = &c->tasks->u.retrieve.count;
2251         syntax = c->tasks->u.retrieve.syntax;
2252         elementSetName = c->tasks->u.retrieve.elementSetName;
2253         break;
2254     default:
2255         return;
2256     }
2257     if (sr && sr->which == Z_Records_NSD)
2258         response_default_diag(c, sr->u.nonSurrogateDiagnostic);
2259     else if (sr && sr->which == Z_Records_multipleNSD)
2260     {
2261         if (sr->u.multipleNonSurDiagnostics->num_diagRecs >= 1)
2262             response_diag(c, sr->u.multipleNonSurDiagnostics->diagRecs[0]);
2263         else
2264             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2265     }
2266     else
2267     {
2268         if (*count + *start > resultset->size)
2269             *count = resultset->size - *start;
2270         if (*count < 0)
2271             *count = 0;
2272         if (sr && sr->which == Z_Records_DBOSD)
2273         {
2274             int i;
2275             NMEM nmem = odr_extract_mem(c->odr_in);
2276             Z_NamePlusRecordList *p =
2277                 sr->u.databaseOrSurDiagnostics;
2278             for (i = 0; i<p->num_records; i++)
2279             {
2280                 record_cache_add(resultset, p->records[i], i + *start,
2281                                  syntax, elementSetName);
2282             }
2283             *count -= i;
2284             if (*count < 0)
2285                 *count = 0;
2286             *start += i;
2287             yaz_log(log_details,
2288                     "handle_records resultset=%p start=%d count=%d",
2289                     resultset, *start, *count);
2290
2291             /* transfer our response to search_nmem .. we need it later */
2292             nmem_transfer(odr_getmem(resultset->odr), nmem);
2293             nmem_destroy(nmem);
2294             if (present_phase && p->num_records == 0)
2295             {
2296                 /* present response and we didn't get any records! */
2297                 Z_NamePlusRecord *myrec =
2298                     zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2299                 record_cache_add(resultset, myrec, *start,
2300                                  syntax, elementSetName);
2301             }
2302         }
2303         else if (present_phase)
2304         {
2305             /* present response and we didn't get any records! */
2306             Z_NamePlusRecord *myrec =
2307                 zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2308             record_cache_add(resultset, myrec, *start, syntax, elementSetName);
2309         }
2310     }
2311 }
2312
2313 static void handle_present_response(ZOOM_connection c, Z_PresentResponse *pr)
2314 {
2315     handle_records(c, pr->records, 1);
2316 }
2317
2318 static void handle_queryExpressionTerm(ZOOM_options opt, const char *name,
2319                                        Z_Term *term)
2320 {
2321     switch (term->which)
2322     {
2323     case Z_Term_general:
2324         ZOOM_options_setl(opt, name,
2325                           (const char *)(term->u.general->buf),
2326                           term->u.general->len);
2327         break;
2328     case Z_Term_characterString:
2329         ZOOM_options_set(opt, name, term->u.characterString);
2330         break;
2331     case Z_Term_numeric:
2332         ZOOM_options_set_int(opt, name, *term->u.numeric);
2333         break;
2334     }
2335 }
2336
2337 static void handle_queryExpression(ZOOM_options opt, const char *name,
2338                                    Z_QueryExpression *exp)
2339 {
2340     char opt_name[80];
2341
2342     switch (exp->which)
2343     {
2344     case Z_QueryExpression_term:
2345         if (exp->u.term && exp->u.term->queryTerm)
2346         {
2347             sprintf(opt_name, "%s.term", name);
2348             handle_queryExpressionTerm(opt, opt_name, exp->u.term->queryTerm);
2349         }
2350         break;
2351     case Z_QueryExpression_query:
2352         break;
2353     }
2354 }
2355
2356 static void handle_searchResult(ZOOM_connection c, ZOOM_resultset resultset,
2357                                 Z_OtherInformation *o)
2358 {
2359     int i;
2360     for (i = 0; o && i < o->num_elements; i++)
2361     {
2362         if (o->list[i]->which == Z_OtherInfo_externallyDefinedInfo)
2363         {
2364             Z_External *ext = o->list[i]->information.externallyDefinedInfo;
2365
2366             if (ext->which == Z_External_searchResult1)
2367             {
2368                 int j;
2369                 Z_SearchInfoReport *sr = ext->u.searchResult1;
2370
2371                 if (sr->num)
2372                     ZOOM_options_set_int(
2373                         resultset->options, "searchresult.size", sr->num);
2374
2375                 for (j = 0; j < sr->num; j++)
2376                 {
2377                     Z_SearchInfoReport_s *ent =
2378                         ext->u.searchResult1->elements[j];
2379                     char pref[80];
2380
2381                     sprintf(pref, "searchresult.%d", j);
2382
2383                     if (ent->subqueryId)
2384                     {
2385                         char opt_name[80];
2386                         sprintf(opt_name, "%s.id", pref);
2387                         ZOOM_options_set(resultset->options, opt_name,
2388                                          ent->subqueryId);
2389                     }
2390                     if (ent->subqueryExpression)
2391                     {
2392                         char opt_name[80];
2393                         sprintf(opt_name, "%s.subquery", pref);
2394                         handle_queryExpression(resultset->options, opt_name,
2395                                                ent->subqueryExpression);
2396                     }
2397                     if (ent->subqueryInterpretation)
2398                     {
2399                         char opt_name[80];
2400                         sprintf(opt_name, "%s.interpretation", pref);
2401                         handle_queryExpression(resultset->options, opt_name,
2402                                                ent->subqueryInterpretation);
2403                     }
2404                     if (ent->subqueryRecommendation)
2405                     {
2406                         char opt_name[80];
2407                         sprintf(opt_name, "%s.recommendation", pref);
2408                         handle_queryExpression(resultset->options, opt_name,
2409                                                ent->subqueryRecommendation);
2410                     }
2411                     if (ent->subqueryCount)
2412                     {
2413                         char opt_name[80];
2414                         sprintf(opt_name, "%s.count", pref);
2415                         ZOOM_options_set_int(resultset->options, opt_name,
2416                                              *ent->subqueryCount);
2417                     }
2418                 }
2419             }
2420         }
2421     }
2422 }
2423
2424 static void handle_search_response(ZOOM_connection c, Z_SearchResponse *sr)
2425 {
2426     ZOOM_resultset resultset;
2427     ZOOM_Event event;
2428
2429     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
2430         return ;
2431
2432     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
2433     ZOOM_connection_put_event(c, event);
2434
2435     resultset = c->tasks->u.search.resultset;
2436
2437     if (sr->resultSetStatus)
2438     {
2439         ZOOM_options_set_int(resultset->options, "resultSetStatus",
2440                              *sr->resultSetStatus);
2441     }
2442     if (sr->presentStatus)
2443     {
2444         ZOOM_options_set_int(resultset->options, "presentStatus",
2445                              *sr->presentStatus);
2446     }
2447     handle_searchResult(c, resultset, sr->additionalSearchInfo);
2448
2449     resultset->size = *sr->resultCount;
2450     handle_records(c, sr->records, 0);
2451 }
2452
2453 static void sort_response(ZOOM_connection c, Z_SortResponse *res)
2454 {
2455     if (res->diagnostics && res->num_diagnostics > 0)
2456         response_diag(c, res->diagnostics[0]);
2457 }
2458
2459 static int scan_response(ZOOM_connection c, Z_ScanResponse *res)
2460 {
2461     NMEM nmem = odr_extract_mem(c->odr_in);
2462     ZOOM_scanset scan;
2463
2464     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
2465         return 0;
2466     scan = c->tasks->u.scan.scan;
2467
2468     if (res->entries && res->entries->nonsurrogateDiagnostics)
2469         response_diag(c, res->entries->nonsurrogateDiagnostics[0]);
2470     scan->scan_response = res;
2471     nmem_transfer(odr_getmem(scan->odr), nmem);
2472     if (res->stepSize)
2473         ZOOM_options_set_int(scan->options, "stepSize", *res->stepSize);
2474     if (res->positionOfTerm)
2475         ZOOM_options_set_int(scan->options, "position", *res->positionOfTerm);
2476     if (res->scanStatus)
2477         ZOOM_options_set_int(scan->options, "scanStatus", *res->scanStatus);
2478     if (res->numberOfEntriesReturned)
2479         ZOOM_options_set_int(scan->options, "number",
2480                              *res->numberOfEntriesReturned);
2481     nmem_destroy(nmem);
2482     return 1;
2483 }
2484
2485 static zoom_ret send_sort(ZOOM_connection c,
2486                           ZOOM_resultset resultset)
2487 {
2488     if (c->error)
2489         resultset->r_sort_spec = 0;
2490     if (resultset->r_sort_spec)
2491     {
2492         Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_sortRequest);
2493         Z_SortRequest *req = apdu->u.sortRequest;
2494
2495         req->num_inputResultSetNames = 1;
2496         req->inputResultSetNames = (Z_InternationalString **)
2497             odr_malloc(c->odr_out, sizeof(*req->inputResultSetNames));
2498         req->inputResultSetNames[0] =
2499             odr_strdup(c->odr_out, resultset->setname);
2500         req->sortedResultSetName = odr_strdup(c->odr_out, resultset->setname);
2501         req->sortSequence = resultset->r_sort_spec;
2502         resultset->r_sort_spec = 0;
2503         return send_APDU(c, apdu);
2504     }
2505     return zoom_complete;
2506 }
2507
2508 static zoom_ret send_present(ZOOM_connection c)
2509 {
2510     Z_APDU *apdu = 0;
2511     Z_PresentRequest *req = 0;
2512     int i = 0;
2513     const char *syntax = 0;
2514     const char *elementSetName = 0;
2515     ZOOM_resultset  resultset;
2516     int *start, *count;
2517
2518     if (!c->tasks)
2519     {
2520         yaz_log(log_details, "%p send_present no tasks", c);
2521         return zoom_complete;
2522     }
2523
2524     switch (c->tasks->which)
2525     {
2526     case ZOOM_TASK_SEARCH:
2527         resultset = c->tasks->u.search.resultset;
2528         start = &c->tasks->u.search.start;
2529         count = &c->tasks->u.search.count;
2530         syntax = c->tasks->u.search.syntax;
2531         elementSetName = c->tasks->u.search.elementSetName;
2532         break;
2533     case ZOOM_TASK_RETRIEVE:
2534         resultset = c->tasks->u.retrieve.resultset;
2535         start = &c->tasks->u.retrieve.start;
2536         count = &c->tasks->u.retrieve.count;
2537         syntax = c->tasks->u.retrieve.syntax;
2538         elementSetName = c->tasks->u.retrieve.elementSetName;
2539         break;
2540     default:
2541         return zoom_complete;
2542     }
2543     yaz_log(log_details, "%p send_present start=%d count=%d",
2544             c, *start, *count);
2545
2546     if (*start < 0 || *count < 0 || *start + *count > resultset->size)
2547     {
2548         set_dset_error(c, YAZ_BIB1_PRESENT_REQUEST_OUT_OF_RANGE, "Bib-1",
2549                        "", 0);
2550     }
2551     if (c->error)                  /* don't continue on error */
2552         return zoom_complete;
2553     yaz_log(log_details, "send_present resultset=%p start=%d count=%d",
2554             resultset, *start, *count);
2555
2556     for (i = 0; i < *count; i++)
2557     {
2558         ZOOM_record rec =
2559             record_cache_lookup(resultset, i + *start, syntax, elementSetName);
2560         if (!rec)
2561             break;
2562         else
2563         {
2564             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
2565             ZOOM_connection_put_event(c, event);
2566         }
2567     }
2568     *start += i;
2569     *count -= i;
2570
2571     if (*count == 0)
2572     {
2573         yaz_log(log_details, "%p send_present skip=%d no more to fetch", c, i);
2574         return zoom_complete;
2575     }
2576
2577     apdu = zget_APDU(c->odr_out, Z_APDU_presentRequest);
2578     req = apdu->u.presentRequest;
2579
2580     if (i)
2581         yaz_log(log_details, "%p send_present skip=%d", c, i);
2582
2583     *req->resultSetStartPoint = *start + 1;
2584     *req->numberOfRecordsRequested = resultset->step>0 ?
2585         resultset->step : *count;
2586     if (*req->numberOfRecordsRequested + *start > resultset->size)
2587         *req->numberOfRecordsRequested = resultset->size - *start;
2588     assert(*req->numberOfRecordsRequested > 0);
2589
2590     if (syntax && *syntax)
2591         req->preferredRecordSyntax =
2592             zoom_yaz_str_to_z3950oid(c, CLASS_RECSYN, syntax);
2593
2594     if (resultset->schema && *resultset->schema)
2595     {
2596         Z_RecordComposition *compo = (Z_RecordComposition *)
2597             odr_malloc(c->odr_out, sizeof(*compo));
2598
2599         req->recordComposition = compo;
2600         compo->which = Z_RecordComp_complex;
2601         compo->u.complex = (Z_CompSpec *)
2602             odr_malloc(c->odr_out, sizeof(*compo->u.complex));
2603         compo->u.complex->selectAlternativeSyntax = (bool_t *)
2604             odr_malloc(c->odr_out, sizeof(bool_t));
2605         *compo->u.complex->selectAlternativeSyntax = 0;
2606
2607         compo->u.complex->generic = (Z_Specification *)
2608             odr_malloc(c->odr_out, sizeof(*compo->u.complex->generic));
2609
2610         compo->u.complex->generic->which = Z_Schema_oid;
2611         compo->u.complex->generic->schema.oid = (Odr_oid *)
2612             zoom_yaz_str_to_z3950oid (c, CLASS_SCHEMA, resultset->schema);
2613
2614         if (!compo->u.complex->generic->schema.oid)
2615         {
2616             /* OID wasn't a schema! Try record syntax instead. */
2617
2618             compo->u.complex->generic->schema.oid = (Odr_oid *)
2619                 zoom_yaz_str_to_z3950oid (c, CLASS_RECSYN, resultset->schema);
2620         }
2621         if (elementSetName && *elementSetName)
2622         {
2623             compo->u.complex->generic->elementSpec = (Z_ElementSpec *)
2624                 odr_malloc(c->odr_out, sizeof(Z_ElementSpec));
2625             compo->u.complex->generic->elementSpec->which =
2626                 Z_ElementSpec_elementSetName;
2627             compo->u.complex->generic->elementSpec->u.elementSetName =
2628                 odr_strdup(c->odr_out, elementSetName);
2629         }
2630         else
2631             compo->u.complex->generic->elementSpec = 0;
2632         compo->u.complex->num_dbSpecific = 0;
2633         compo->u.complex->dbSpecific = 0;
2634         compo->u.complex->num_recordSyntax = 0;
2635         compo->u.complex->recordSyntax = 0;
2636     }
2637     else if (elementSetName && *elementSetName)
2638     {
2639         Z_ElementSetNames *esn = (Z_ElementSetNames *)
2640             odr_malloc(c->odr_out, sizeof(*esn));
2641         Z_RecordComposition *compo = (Z_RecordComposition *)
2642             odr_malloc(c->odr_out, sizeof(*compo));
2643
2644         esn->which = Z_ElementSetNames_generic;
2645         esn->u.generic = odr_strdup(c->odr_out, elementSetName);
2646         compo->which = Z_RecordComp_simple;
2647         compo->u.simple = esn;
2648         req->recordComposition = compo;
2649     }
2650     req->resultSetId = odr_strdup(c->odr_out, resultset->setname);
2651     return send_APDU(c, apdu);
2652 }
2653
2654 ZOOM_API(ZOOM_scanset)
2655     ZOOM_connection_scan(ZOOM_connection c, const char *start)
2656 {
2657     ZOOM_scanset s;
2658     ZOOM_query q = ZOOM_query_create();
2659
2660     ZOOM_query_prefix(q, start);
2661
2662     s = ZOOM_connection_scan1(c, q);
2663     ZOOM_query_destroy(q);
2664     return s;
2665
2666 }
2667
2668 ZOOM_API(ZOOM_scanset)
2669     ZOOM_connection_scan1(ZOOM_connection c, ZOOM_query q)
2670 {
2671     char *start;
2672     char *freeme = 0;
2673     ZOOM_scanset scan = 0;
2674
2675     /*
2676      * We need to check the query-type, so we can recognise CQL and
2677      * CCL and compile them into a form that we can use here.  The
2678      * ZOOM_query structure has no explicit `type' member, but
2679      * inspection of the ZOOM_query_prefix() and ZOOM_query_cql()
2680      * functions shows how the structure is set up in each case.
2681      */
2682     if (!q->z_query)
2683         return 0;
2684     else if (q->z_query->which == Z_Query_type_1)
2685     {
2686         yaz_log(log_api, "%p ZOOM_connection_scan1 q=%p PQF '%s'",
2687                 c, q, q->query_string);
2688         start = q->query_string;
2689     }
2690     else if (q->z_query->which == Z_Query_type_104)
2691     {
2692         yaz_log(log_api, "%p ZOOM_connection_scan1 q=%p CQL '%s'",
2693                 c, q, q->query_string);
2694         start = freeme = cql2pqf(c, q->query_string);
2695         if (start == 0)
2696             return 0;
2697     }
2698     else
2699     {
2700         yaz_log(YLOG_FATAL, "%p ZOOM_connection_scan1 q=%p unknown type '%s'",
2701                 c, q, q->query_string);
2702         abort();
2703     }
2704
2705     scan = (ZOOM_scanset) xmalloc(sizeof(*scan));
2706     scan->connection = c;
2707     scan->odr = odr_createmem(ODR_DECODE);
2708     scan->options = ZOOM_options_create_with_parent(c->options);
2709     scan->refcount = 1;
2710     scan->scan_response = 0;
2711     scan->termListAndStartPoint =
2712         p_query_scan(scan->odr, PROTO_Z3950, &scan->attributeSet, start);
2713     xfree(freeme);
2714
2715     {
2716         const char *cp = ZOOM_options_get(scan->options, "rpnCharset");
2717         if (cp)
2718         {
2719             yaz_iconv_t cd = yaz_iconv_open(cp, "UTF-8");
2720             if (cd)
2721             {
2722                 yaz_query_charset_convert_apt(scan->termListAndStartPoint,
2723                                               scan->odr, cd);
2724             }
2725         }
2726     }
2727
2728
2729     scan->databaseNames = set_DatabaseNames(c, c->options,
2730                                             &scan->num_databaseNames,
2731                                             scan->odr);
2732     if (scan->termListAndStartPoint != 0)
2733     {
2734         ZOOM_task task = ZOOM_connection_add_task(c, ZOOM_TASK_SCAN);
2735         task->u.scan.scan = scan;
2736
2737         (scan->refcount)++;
2738         if (!c->async)
2739         {
2740             while (ZOOM_event(1, &c))
2741                 ;
2742         }
2743     }
2744     return scan;
2745 }
2746
2747 ZOOM_API(void)
2748     ZOOM_scanset_destroy(ZOOM_scanset scan)
2749 {
2750     if (!scan)
2751         return;
2752     (scan->refcount)--;
2753     if (scan->refcount == 0)
2754     {
2755         odr_destroy(scan->odr);
2756
2757         ZOOM_options_destroy(scan->options);
2758         xfree(scan);
2759     }
2760 }
2761
2762 static zoom_ret send_package(ZOOM_connection c)
2763 {
2764     ZOOM_Event event;
2765
2766     yaz_log(log_details, "%p send_package", c);
2767     if (!c->tasks)
2768         return zoom_complete;
2769     assert (c->tasks->which == ZOOM_TASK_PACKAGE);
2770
2771     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
2772     ZOOM_connection_put_event(c, event);
2773
2774     c->buf_out = c->tasks->u.package->buf_out;
2775     c->len_out = c->tasks->u.package->len_out;
2776
2777     return do_write(c);
2778 }
2779
2780 static zoom_ret send_scan(ZOOM_connection c)
2781 {
2782     ZOOM_scanset scan;
2783     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_scanRequest);
2784     Z_ScanRequest *req = apdu->u.scanRequest;
2785
2786     yaz_log(log_details, "%p send_scan", c);
2787     if (!c->tasks)
2788         return zoom_complete;
2789     assert (c->tasks->which == ZOOM_TASK_SCAN);
2790     scan = c->tasks->u.scan.scan;
2791
2792     req->termListAndStartPoint = scan->termListAndStartPoint;
2793     req->attributeSet = scan->attributeSet;
2794
2795     *req->numberOfTermsRequested =
2796         ZOOM_options_get_int(scan->options, "number", 10);
2797
2798     req->preferredPositionInResponse =
2799         odr_intdup(c->odr_out,
2800                    ZOOM_options_get_int(scan->options, "position", 1));
2801
2802     req->stepSize =
2803         odr_intdup(c->odr_out,
2804                    ZOOM_options_get_int(scan->options, "stepSize", 0));
2805
2806     req->databaseNames = scan->databaseNames;
2807     req->num_databaseNames = scan->num_databaseNames;
2808
2809     return send_APDU(c, apdu);
2810 }
2811
2812 ZOOM_API(size_t)
2813     ZOOM_scanset_size(ZOOM_scanset scan)
2814 {
2815     if (!scan || !scan->scan_response || !scan->scan_response->entries)
2816         return 0;
2817     return scan->scan_response->entries->num_entries;
2818 }
2819
2820 ZOOM_API(const char *)
2821     ZOOM_scanset_term(ZOOM_scanset scan, size_t pos,
2822                       int *occ, int *len)
2823 {
2824     const char *term = 0;
2825     size_t noent = ZOOM_scanset_size(scan);
2826     Z_ScanResponse *res = scan->scan_response;
2827
2828     *len = 0;
2829     *occ = 0;
2830     if (pos >= noent)
2831         return 0;
2832     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2833     {
2834         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2835
2836         if (t->term->which == Z_Term_general)
2837         {
2838             term = (const char *) t->term->u.general->buf;
2839             *len = t->term->u.general->len;
2840         }
2841         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2842     }
2843     return term;
2844 }
2845
2846 ZOOM_API(const char *)
2847     ZOOM_scanset_display_term(ZOOM_scanset scan, size_t pos,
2848                               int *occ, int *len)
2849 {
2850     const char *term = 0;
2851     size_t noent = ZOOM_scanset_size(scan);
2852     Z_ScanResponse *res = scan->scan_response;
2853
2854     *len = 0;
2855     *occ = 0;
2856     if (pos >= noent)
2857         return 0;
2858     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2859     {
2860         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2861
2862         if (t->displayTerm)
2863         {
2864             term = t->displayTerm;
2865             *len = strlen(term);
2866         }
2867         else if (t->term->which == Z_Term_general)
2868         {
2869             term = (const char *) t->term->u.general->buf;
2870             *len = t->term->u.general->len;
2871         }
2872         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2873     }
2874     return term;
2875 }
2876
2877 ZOOM_API(const char *)
2878     ZOOM_scanset_option_get(ZOOM_scanset scan, const char *key)
2879 {
2880     return ZOOM_options_get(scan->options, key);
2881 }
2882
2883 ZOOM_API(void)
2884     ZOOM_scanset_option_set(ZOOM_scanset scan, const char *key,
2885                             const char *val)
2886 {
2887     ZOOM_options_set(scan->options, key, val);
2888 }
2889
2890 static Z_APDU *create_es_package(ZOOM_package p, const Odr_oid *oid)
2891 {
2892     const char *str;
2893     Z_APDU *apdu = zget_APDU(p->odr_out, Z_APDU_extendedServicesRequest);
2894     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2895
2896     str = ZOOM_options_get(p->options, "package-name");
2897     if (str && *str)
2898         req->packageName = odr_strdup(p->odr_out, str);
2899
2900     str = ZOOM_options_get(p->options, "user-id");
2901     if (str)
2902         req->userId = odr_strdup(p->odr_out, str);
2903
2904     req->packageType = odr_oiddup(p->odr_out, oid);
2905
2906     str = ZOOM_options_get(p->options, "function");
2907     if (str)
2908     {
2909         if (!strcmp (str, "create"))
2910             *req->function = Z_ExtendedServicesRequest_create;
2911         if (!strcmp (str, "delete"))
2912             *req->function = Z_ExtendedServicesRequest_delete;
2913         if (!strcmp (str, "modify"))
2914             *req->function = Z_ExtendedServicesRequest_modify;
2915     }
2916
2917     str = ZOOM_options_get(p->options, "waitAction");
2918     if (str)
2919     {
2920         if (!strcmp (str, "wait"))
2921             *req->waitAction = Z_ExtendedServicesRequest_wait;
2922         if (!strcmp (str, "waitIfPossible"))
2923             *req->waitAction = Z_ExtendedServicesRequest_waitIfPossible;
2924         if (!strcmp (str, "dontWait"))
2925             *req->waitAction = Z_ExtendedServicesRequest_dontWait;
2926         if (!strcmp (str, "dontReturnPackage"))
2927             *req->waitAction = Z_ExtendedServicesRequest_dontReturnPackage;
2928     }
2929     return apdu;
2930 }
2931
2932 static const char *ill_array_lookup(void *clientData, const char *idx)
2933 {
2934     ZOOM_package p = (ZOOM_package) clientData;
2935     return ZOOM_options_get(p->options, idx+4);
2936 }
2937
2938 static Z_External *encode_ill_request(ZOOM_package p)
2939 {
2940     ODR out = p->odr_out;
2941     ILL_Request *req;
2942     Z_External *r = 0;
2943     struct ill_get_ctl ctl;
2944
2945     ctl.odr = p->odr_out;
2946     ctl.clientData = p;
2947     ctl.f = ill_array_lookup;
2948
2949     req = ill_get_ILLRequest(&ctl, "ill", 0);
2950
2951     if (!ill_Request(out, &req, 0, 0))
2952     {
2953         int ill_request_size;
2954         char *ill_request_buf = odr_getbuf(out, &ill_request_size, 0);
2955         if (ill_request_buf)
2956             odr_setbuf(out, ill_request_buf, ill_request_size, 1);
2957         return 0;
2958     }
2959     else
2960     {
2961         int illRequest_size = 0;
2962         char *illRequest_buf = odr_getbuf(out, &illRequest_size, 0);
2963
2964         r = (Z_External *) odr_malloc(out, sizeof(*r));
2965         r->direct_reference = odr_oiddup(out, yaz_oid_general_isoill_1);
2966         r->indirect_reference = 0;
2967         r->descriptor = 0;
2968         r->which = Z_External_single;
2969
2970         r->u.single_ASN1_type =
2971             odr_create_Odr_oct(out,
2972                                (unsigned char *)illRequest_buf,
2973                                illRequest_size);
2974     }
2975     return r;
2976 }
2977
2978 static Z_ItemOrder *encode_item_order(ZOOM_package p)
2979 {
2980     Z_ItemOrder *req = (Z_ItemOrder *) odr_malloc(p->odr_out, sizeof(*req));
2981     const char *str;
2982
2983     req->which = Z_IOItemOrder_esRequest;
2984     req->u.esRequest = (Z_IORequest *)
2985         odr_malloc(p->odr_out,sizeof(Z_IORequest));
2986
2987     /* to keep part ... */
2988     req->u.esRequest->toKeep = (Z_IOOriginPartToKeep *)
2989         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartToKeep));
2990     req->u.esRequest->toKeep->supplDescription = 0;
2991     req->u.esRequest->toKeep->contact = (Z_IOContact *)
2992         odr_malloc(p->odr_out, sizeof(*req->u.esRequest->toKeep->contact));
2993
2994     str = ZOOM_options_get(p->options, "contact-name");
2995     req->u.esRequest->toKeep->contact->name = str ?
2996         odr_strdup(p->odr_out, str) : 0;
2997
2998     str = ZOOM_options_get(p->options, "contact-phone");
2999     req->u.esRequest->toKeep->contact->phone = str ?
3000         odr_strdup(p->odr_out, str) : 0;
3001
3002     str = ZOOM_options_get(p->options, "contact-email");
3003     req->u.esRequest->toKeep->contact->email = str ?
3004         odr_strdup(p->odr_out, str) : 0;
3005
3006     req->u.esRequest->toKeep->addlBilling = 0;
3007
3008     /* not to keep part ... */
3009     req->u.esRequest->notToKeep = (Z_IOOriginPartNotToKeep *)
3010         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartNotToKeep));
3011
3012     str = ZOOM_options_get(p->options, "itemorder-setname");
3013     if (!str)
3014         str = "default";
3015
3016     if (!*str)
3017         req->u.esRequest->notToKeep->resultSetItem = 0;
3018     else
3019     {
3020         req->u.esRequest->notToKeep->resultSetItem = (Z_IOResultSetItem *)
3021             odr_malloc(p->odr_out, sizeof(Z_IOResultSetItem));
3022
3023         req->u.esRequest->notToKeep->resultSetItem->resultSetId =
3024             odr_strdup(p->odr_out, str);
3025         req->u.esRequest->notToKeep->resultSetItem->item =
3026             (int *) odr_malloc(p->odr_out, sizeof(int));
3027
3028         str = ZOOM_options_get(p->options, "itemorder-item");
3029         *req->u.esRequest->notToKeep->resultSetItem->item =
3030             (str ? atoi(str) : 1);
3031     }
3032
3033     str = ZOOM_options_get(p->options, "doc");
3034     if (str)
3035     {
3036         req->u.esRequest->notToKeep->itemRequest =
3037             z_ext_record_xml(p->odr_out, str, strlen(str));
3038     }
3039     else
3040         req->u.esRequest->notToKeep->itemRequest = encode_ill_request(p);
3041
3042     return req;
3043 }
3044
3045 Z_APDU *create_admin_package(ZOOM_package p, int type,
3046                              Z_ESAdminOriginPartToKeep **toKeepP,
3047                              Z_ESAdminOriginPartNotToKeep **notToKeepP)
3048 {
3049     Z_APDU *apdu = create_es_package(p, yaz_oid_extserv_admin);
3050     if (apdu)
3051     {
3052         Z_ESAdminOriginPartToKeep  *toKeep;
3053         Z_ESAdminOriginPartNotToKeep  *notToKeep;
3054         Z_External *r = (Z_External *) odr_malloc(p->odr_out, sizeof(*r));
3055         const char *first_db = "Default";
3056         int num_db;
3057         char **db = set_DatabaseNames(p->connection, p->options, &num_db,
3058                                       p->odr_out);
3059         if (num_db > 0)
3060             first_db = db[0];
3061
3062         r->direct_reference = odr_oiddup(p->odr_out, yaz_oid_extserv_admin);
3063         r->descriptor = 0;
3064         r->indirect_reference = 0;
3065         r->which = Z_External_ESAdmin;
3066
3067         r->u.adminService = (Z_Admin *)
3068             odr_malloc(p->odr_out, sizeof(*r->u.adminService));
3069         r->u.adminService->which = Z_Admin_esRequest;
3070         r->u.adminService->u.esRequest = (Z_AdminEsRequest *)
3071             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest));
3072
3073         toKeep = r->u.adminService->u.esRequest->toKeep =
3074             (Z_ESAdminOriginPartToKeep *)
3075             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest->toKeep));
3076         toKeep->which = type;
3077         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
3078         toKeep->u.create = odr_nullval();
3079         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3080
3081         r->u.adminService->u.esRequest->notToKeep = notToKeep =
3082             (Z_ESAdminOriginPartNotToKeep *)
3083             odr_malloc(p->odr_out,
3084                        sizeof(*r->u.adminService->u.esRequest->notToKeep));
3085         notToKeep->which = Z_ESAdminOriginPartNotToKeep_recordsWillFollow;
3086         notToKeep->u.recordsWillFollow = odr_nullval();
3087         if (toKeepP)
3088             *toKeepP = toKeep;
3089         if (notToKeepP)
3090             *notToKeepP = notToKeep;
3091     }
3092     return apdu;
3093 }
3094
3095 static Z_APDU *create_xmlupdate_package(ZOOM_package p)
3096 {
3097     Z_APDU *apdu = create_es_package(p, yaz_oid_extserv_xml_es);
3098     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
3099     Z_External *ext = (Z_External *) odr_malloc(p->odr_out, sizeof(*ext));
3100     const char *doc = ZOOM_options_get(p->options, "doc");
3101
3102     if (!doc)
3103         doc = "";
3104
3105     req->taskSpecificParameters = ext;
3106     ext->direct_reference = req->packageType;
3107     ext->descriptor = 0;
3108     ext->indirect_reference = 0;
3109
3110     ext->which = Z_External_octet;
3111     ext->u.single_ASN1_type =
3112         odr_create_Odr_oct(p->odr_out, (const unsigned char *) doc,
3113                            strlen(doc));
3114     return apdu;
3115 }
3116
3117 static Z_APDU *create_update_package(ZOOM_package p)
3118 {
3119     Z_APDU *apdu = 0;
3120     const char *first_db = "Default";
3121     int num_db;
3122     char **db = set_DatabaseNames(p->connection, p->options, &num_db, p->odr_out);
3123     const char *action = ZOOM_options_get(p->options, "action");
3124     const char *recordIdOpaque = ZOOM_options_get(p->options, "recordIdOpaque");
3125     const char *recordIdNumber = ZOOM_options_get(p->options, "recordIdNumber");
3126     const char *record_buf = ZOOM_options_get(p->options, "record");
3127     const char *syntax_str = ZOOM_options_get(p->options, "syntax");
3128     const char *version = ZOOM_options_get(p->options, "updateVersion");
3129
3130     const char *correlationInfo_note =
3131         ZOOM_options_get(p->options, "correlationInfo.note");
3132     const char *correlationInfo_id =
3133         ZOOM_options_get(p->options, "correlationInfo.id");
3134     int action_no = -1;
3135     Odr_oid *syntax_oid = 0;
3136     const Odr_oid *package_oid = yaz_oid_extserv_database_update;
3137
3138     if (!version)
3139         version = "3";
3140     if (!syntax_str)
3141         syntax_str = "xml";
3142     if (!record_buf)
3143     {
3144         record_buf = "void";
3145         syntax_str = "SUTRS";
3146     }
3147
3148     if (syntax_str)
3149     {
3150         syntax_oid = yaz_string_to_oid_odr(yaz_oid_std(),
3151                                            CLASS_RECSYN, syntax_str,
3152                                            p->odr_out);
3153     }
3154     if (!syntax_oid)
3155         return 0;
3156
3157     if (num_db > 0)
3158         first_db = db[0];
3159
3160     switch(*version)
3161     {
3162     case '1':
3163         package_oid = yaz_oid_extserv_database_update_first_version;
3164         /* old update does not support specialUpdate */
3165         if (!action)
3166             action = "recordInsert";
3167         break;
3168     case '2':
3169         if (!action)
3170             action = "specialUpdate";
3171         package_oid = yaz_oid_extserv_database_update_second_version;
3172         break;
3173     case '3':
3174         if (!action)
3175             action = "specialUpdate";
3176         package_oid = yaz_oid_extserv_database_update;
3177         break;
3178     default:
3179         return 0;
3180     }
3181
3182     if (!strcmp(action, "recordInsert"))
3183         action_no = Z_IUOriginPartToKeep_recordInsert;
3184     else if (!strcmp(action, "recordReplace"))
3185         action_no = Z_IUOriginPartToKeep_recordReplace;
3186     else if (!strcmp(action, "recordDelete"))
3187         action_no = Z_IUOriginPartToKeep_recordDelete;
3188     else if (!strcmp(action, "elementUpdate"))
3189         action_no = Z_IUOriginPartToKeep_elementUpdate;
3190     else if (!strcmp(action, "specialUpdate"))
3191         action_no = Z_IUOriginPartToKeep_specialUpdate;
3192     else
3193         return 0;
3194
3195     apdu = create_es_package(p, package_oid);
3196     if (apdu)
3197     {
3198         Z_IUOriginPartToKeep *toKeep;
3199         Z_IUSuppliedRecords *notToKeep;
3200         Z_External *r = (Z_External *)
3201             odr_malloc(p->odr_out, sizeof(*r));
3202         const char *elementSetName =
3203             ZOOM_options_get(p->options, "elementSetName");
3204
3205         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3206
3207         r->direct_reference = odr_oiddup(p->odr_out, package_oid);
3208         r->descriptor = 0;
3209         r->which = Z_External_update;
3210         r->indirect_reference = 0;
3211         r->u.update = (Z_IUUpdate *)
3212             odr_malloc(p->odr_out, sizeof(*r->u.update));
3213
3214         r->u.update->which = Z_IUUpdate_esRequest;
3215         r->u.update->u.esRequest = (Z_IUUpdateEsRequest *)
3216             odr_malloc(p->odr_out, sizeof(*r->u.update->u.esRequest));
3217         toKeep = r->u.update->u.esRequest->toKeep =
3218             (Z_IUOriginPartToKeep *)
3219             odr_malloc(p->odr_out, sizeof(*toKeep));
3220
3221         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
3222         toKeep->schema = 0;
3223
3224         toKeep->elementSetName = 0;
3225         if (elementSetName)
3226             toKeep->elementSetName = odr_strdup(p->odr_out, elementSetName);
3227
3228         toKeep->actionQualifier = 0;
3229         toKeep->action = odr_intdup(p->odr_out, action_no);
3230
3231         notToKeep = r->u.update->u.esRequest->notToKeep =
3232             (Z_IUSuppliedRecords *)
3233             odr_malloc(p->odr_out, sizeof(*notToKeep));
3234         notToKeep->num = 1;
3235         notToKeep->elements = (Z_IUSuppliedRecords_elem **)
3236             odr_malloc(p->odr_out, sizeof(*notToKeep->elements));
3237         notToKeep->elements[0] = (Z_IUSuppliedRecords_elem *)
3238             odr_malloc(p->odr_out, sizeof(**notToKeep->elements));
3239         notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_opaque;
3240         if (recordIdOpaque)
3241         {
3242             notToKeep->elements[0]->u.opaque =
3243                 odr_create_Odr_oct(p->odr_out,
3244                                    (const unsigned char *) recordIdOpaque,
3245                                    strlen(recordIdOpaque));
3246         }
3247         else if (recordIdNumber)
3248         {
3249             notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_number;
3250
3251             notToKeep->elements[0]->u.number =
3252                 odr_intdup(p->odr_out, atoi(recordIdNumber));
3253         }
3254         else
3255             notToKeep->elements[0]->u.opaque = 0;
3256         notToKeep->elements[0]->supplementalId = 0;
3257         if (correlationInfo_note || correlationInfo_id)
3258         {
3259             Z_IUCorrelationInfo *ci;
3260             ci = notToKeep->elements[0]->correlationInfo =
3261                 odr_malloc(p->odr_out, sizeof(*ci));
3262             ci->note = correlationInfo_note ?
3263                 odr_strdup(p->odr_out, correlationInfo_note) : 0;
3264             ci->id = correlationInfo_id ?
3265                 odr_intdup(p->odr_out, atoi(correlationInfo_id)) : 0;
3266         }
3267         else
3268             notToKeep->elements[0]->correlationInfo = 0;
3269         notToKeep->elements[0]->record =
3270             z_ext_record_oid(p->odr_out, syntax_oid,
3271                              record_buf, strlen(record_buf));
3272     }
3273     if (0 && apdu)
3274     {
3275         ODR print = odr_createmem(ODR_PRINT);
3276
3277         z_APDU(print, &apdu, 0, 0);
3278         odr_destroy(print);
3279     }
3280     return apdu;
3281 }
3282
3283 ZOOM_API(void)
3284     ZOOM_package_send(ZOOM_package p, const char *type)
3285 {
3286     Z_APDU *apdu = 0;
3287     ZOOM_connection c;
3288     if (!p)
3289         return;
3290     c = p->connection;
3291     odr_reset(p->odr_out);
3292     xfree(p->buf_out);
3293     p->buf_out = 0;
3294     if (!strcmp(type, "itemorder"))
3295     {
3296         apdu = create_es_package(p, yaz_oid_extserv_item_order);
3297         if (apdu)
3298         {
3299             Z_External *r = (Z_External *) odr_malloc(p->odr_out, sizeof(*r));
3300
3301             r->direct_reference =
3302                 odr_oiddup(p->odr_out, yaz_oid_extserv_item_order);
3303             r->descriptor = 0;
3304             r->which = Z_External_itemOrder;
3305             r->indirect_reference = 0;
3306             r->u.itemOrder = encode_item_order(p);
3307
3308             apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3309         }
3310     }
3311     else if (!strcmp(type, "create"))  /* create database */
3312     {
3313         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_create,
3314                                     0, 0);
3315     }
3316     else if (!strcmp(type, "drop"))  /* drop database */
3317     {
3318         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_drop,
3319                                     0, 0);
3320     }
3321     else if (!strcmp(type, "commit"))  /* commit changes */
3322     {
3323         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_commit,
3324                                     0, 0);
3325     }
3326     else if (!strcmp(type, "update")) /* update record(s) */
3327     {
3328         apdu = create_update_package(p);
3329     }
3330     else if (!strcmp(type, "xmlupdate"))
3331     {
3332         apdu = create_xmlupdate_package(p);
3333     }
3334     if (apdu)
3335     {
3336         if (encode_APDU(p->connection, apdu, p->odr_out) == 0)
3337         {
3338             char *buf;
3339
3340             ZOOM_task task = ZOOM_connection_add_task(c, ZOOM_TASK_PACKAGE);
3341             task->u.package = p;
3342             buf = odr_getbuf(p->odr_out, &p->len_out, 0);
3343             p->buf_out = (char *) xmalloc(p->len_out);
3344             memcpy(p->buf_out, buf, p->len_out);
3345
3346             (p->refcount)++;
3347             if (!c->async)
3348             {
3349                 while (ZOOM_event(1, &c))
3350                     ;
3351             }
3352         }
3353     }
3354 }
3355
3356 ZOOM_API(ZOOM_package)
3357     ZOOM_connection_package(ZOOM_connection c, ZOOM_options options)
3358 {
3359     ZOOM_package p = (ZOOM_package) xmalloc(sizeof(*p));
3360
3361     p->connection = c;
3362     p->odr_out = odr_createmem(ODR_ENCODE);
3363     p->options = ZOOM_options_create_with_parent2(options, c->options);
3364     p->refcount = 1;
3365     p->buf_out = 0;
3366     p->len_out = 0;
3367     return p;
3368 }
3369
3370 ZOOM_API(void)
3371     ZOOM_package_destroy(ZOOM_package p)
3372 {
3373     if (!p)
3374         return;
3375     (p->refcount)--;
3376     if (p->refcount == 0)
3377     {
3378         odr_destroy(p->odr_out);
3379         xfree(p->buf_out);
3380
3381         ZOOM_options_destroy(p->options);
3382         xfree(p);
3383     }
3384 }
3385
3386 ZOOM_API(const char *)
3387     ZOOM_package_option_get(ZOOM_package p, const char *key)
3388 {
3389     return ZOOM_options_get(p->options, key);
3390 }
3391
3392
3393 ZOOM_API(void)
3394     ZOOM_package_option_set(ZOOM_package p, const char *key,
3395                             const char *val)
3396 {
3397     ZOOM_options_set(p->options, key, val);
3398 }
3399
3400 static int ZOOM_connection_exec_task(ZOOM_connection c)
3401 {
3402     ZOOM_task task = c->tasks;
3403     zoom_ret ret = zoom_complete;
3404
3405     if (!task)
3406         return 0;
3407     yaz_log(log_details, "%p ZOOM_connection_exec_task type=%d run=%d",
3408             c, task->which, task->running);
3409     if (c->error != ZOOM_ERROR_NONE)
3410     {
3411         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3412                 "removing tasks because of error = %d", c, c->error);
3413         ZOOM_connection_remove_tasks(c);
3414         return 0;
3415     }
3416     if (task->running)
3417     {
3418         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3419                 "task already running", c);
3420         return 0;
3421     }
3422     task->running = 1;
3423     ret = zoom_complete;
3424     if (c->cs || task->which == ZOOM_TASK_CONNECT)
3425     {
3426         switch (task->which)
3427         {
3428         case ZOOM_TASK_SEARCH:
3429             if (c->proto == PROTO_HTTP)
3430                 ret = ZOOM_connection_srw_send_search(c);
3431             else
3432                 ret = ZOOM_connection_send_search(c);
3433             break;
3434         case ZOOM_TASK_RETRIEVE:
3435             if (c->proto == PROTO_HTTP)
3436                 ret = ZOOM_connection_srw_send_search(c);
3437             else
3438                 ret = send_present(c);
3439             break;
3440         case ZOOM_TASK_CONNECT:
3441             ret = do_connect(c);
3442             break;
3443         case ZOOM_TASK_SCAN:
3444             ret = send_scan(c);
3445             break;
3446         case ZOOM_TASK_PACKAGE:
3447             ret = send_package(c);
3448             break;
3449         case ZOOM_TASK_SORT:
3450             c->tasks->u.sort.resultset->r_sort_spec =
3451                 c->tasks->u.sort.q->sort_spec;
3452             ret = send_sort(c, c->tasks->u.sort.resultset);
3453             break;
3454         }
3455     }
3456     else
3457     {
3458         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3459                 "remove tasks because no connection exist", c);
3460         ZOOM_connection_remove_tasks(c);
3461     }
3462     if (ret == zoom_complete)
3463     {
3464         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3465                 "task removed (complete)", c);
3466         ZOOM_connection_remove_task(c);
3467         return 0;
3468     }
3469     yaz_log(log_details, "%p ZOOM_connection_exec_task "
3470             "task pending", c);
3471     return 1;
3472 }
3473
3474 static zoom_ret send_sort_present(ZOOM_connection c)
3475 {
3476     zoom_ret r = zoom_complete;
3477
3478     if (c->tasks && c->tasks->which == ZOOM_TASK_SEARCH)
3479         r = send_sort(c, c->tasks->u.search.resultset);
3480     if (r == zoom_complete)
3481         r = send_present(c);
3482     return r;
3483 }
3484
3485 static int es_response(ZOOM_connection c,
3486                        Z_ExtendedServicesResponse *res)
3487 {
3488     if (!c->tasks || c->tasks->which != ZOOM_TASK_PACKAGE)
3489         return 0;
3490     if (res->diagnostics && res->num_diagnostics > 0)
3491         response_diag(c, res->diagnostics[0]);
3492     if (res->taskPackage &&
3493         res->taskPackage->which == Z_External_extendedService)
3494     {
3495         Z_TaskPackage *taskPackage = res->taskPackage->u.extendedService;
3496         Odr_oct *id = taskPackage->targetReference;
3497
3498         if (id)
3499             ZOOM_options_setl(c->tasks->u.package->options,
3500                               "targetReference", (char*) id->buf, id->len);
3501     }
3502     if (res->taskPackage &&
3503         res->taskPackage->which == Z_External_octet)
3504     {
3505         Odr_oct *doc = res->taskPackage->u.octet_aligned;
3506         ZOOM_options_setl(c->tasks->u.package->options,
3507                           "xmlUpdateDoc", (char*) doc->buf, doc->len);
3508     }
3509     return 1;
3510 }
3511
3512 static void interpret_init_diag(ZOOM_connection c,
3513                                 Z_DiagnosticFormat *diag)
3514 {
3515     if (diag->num > 0)
3516     {
3517         Z_DiagnosticFormat_s *ds = diag->elements[0];
3518         if (ds->which == Z_DiagnosticFormat_s_defaultDiagRec)
3519             response_default_diag(c, ds->u.defaultDiagRec);
3520     }
3521 }
3522
3523
3524 static void interpret_otherinformation_field(ZOOM_connection c,
3525                                              Z_OtherInformation *ui)
3526 {
3527     int i;
3528     for (i = 0; i < ui->num_elements; i++)
3529     {
3530         Z_OtherInformationUnit *unit = ui->list[i];
3531         if (unit->which == Z_OtherInfo_externallyDefinedInfo &&
3532             unit->information.externallyDefinedInfo &&
3533             unit->information.externallyDefinedInfo->which ==
3534             Z_External_diag1)
3535         {
3536             interpret_init_diag(c, unit->information.externallyDefinedInfo->u.diag1);
3537         }
3538     }
3539 }
3540
3541
3542 static void set_init_option(const char *name, void *clientData) {
3543     ZOOM_connection c = (ZOOM_connection) clientData;
3544     char buf[80];
3545
3546     sprintf(buf, "init_opt_%.70s", name);
3547     ZOOM_connection_option_set(c, buf, "1");
3548 }
3549
3550
3551 static void recv_apdu(ZOOM_connection c, Z_APDU *apdu)
3552 {
3553     Z_InitResponse *initrs;
3554
3555     ZOOM_connection_set_mask(c, 0);
3556     yaz_log(log_details, "%p recv_apdu apdu->which=%d", c, apdu->which);
3557     switch(apdu->which)
3558     {
3559     case Z_APDU_initResponse:
3560         yaz_log(log_api, "%p recv_apdu: Received Init response", c);
3561         initrs = apdu->u.initResponse;
3562         ZOOM_connection_option_set(c, "serverImplementationId",
3563                                    initrs->implementationId ?
3564                                    initrs->implementationId : "");
3565         ZOOM_connection_option_set(c, "serverImplementationName",
3566                                    initrs->implementationName ?
3567                                    initrs->implementationName : "");
3568         ZOOM_connection_option_set(c, "serverImplementationVersion",
3569                                    initrs->implementationVersion ?
3570                                    initrs->implementationVersion : "");
3571         /* Set the three old options too, for old applications */
3572         ZOOM_connection_option_set(c, "targetImplementationId",
3573                                    initrs->implementationId ?
3574                                    initrs->implementationId : "");
3575         ZOOM_connection_option_set(c, "targetImplementationName",
3576                                    initrs->implementationName ?
3577                                    initrs->implementationName : "");
3578         ZOOM_connection_option_set(c, "targetImplementationVersion",
3579                                    initrs->implementationVersion ?
3580                                    initrs->implementationVersion : "");
3581
3582         /* Make initrs->options available as ZOOM-level options */
3583         yaz_init_opt_decode(initrs->options, set_init_option, (void*) c);
3584
3585         if (!*initrs->result)
3586         {
3587             Z_External *uif = initrs->userInformationField;
3588
3589             set_ZOOM_error(c, ZOOM_ERROR_INIT, 0); /* default error */
3590
3591             if (uif && uif->which == Z_External_userInfo1)
3592                 interpret_otherinformation_field(c, uif->u.userInfo1);
3593         }
3594         else
3595         {
3596             char *cookie =
3597                 yaz_oi_get_string_oid(&apdu->u.initResponse->otherInfo,
3598                                       yaz_oid_userinfo_cookie, 1, 0);
3599             xfree(c->cookie_in);
3600             c->cookie_in = 0;
3601             if (cookie)
3602                 c->cookie_in = xstrdup(cookie);
3603             if (ODR_MASK_GET(initrs->options, Z_Options_namedResultSets) &&
3604                 ODR_MASK_GET(initrs->protocolVersion, Z_ProtocolVersion_3))
3605                 c->support_named_resultsets = 1;
3606             if (c->tasks)
3607             {
3608                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
3609                 ZOOM_connection_remove_task(c);
3610             }
3611             ZOOM_connection_exec_task(c);
3612         }
3613         if (ODR_MASK_GET(initrs->options, Z_Options_negotiationModel))
3614         {
3615             NMEM tmpmem = nmem_create();
3616             Z_CharSetandLanguageNegotiation *p =
3617                 yaz_get_charneg_record(initrs->otherInfo);
3618
3619             if (p)
3620             {
3621                 char *charset = NULL, *lang = NULL;
3622                 int sel;
3623
3624                 yaz_get_response_charneg(tmpmem, p, &charset, &lang, &sel);
3625                 yaz_log(log_details, "%p recv_apdu target accepted: "
3626                         "charset %s, language %s, select %d",
3627                         c,
3628                         charset ? charset : "none", lang ? lang : "none", sel);
3629                 if (charset)
3630                     ZOOM_connection_option_set(c, "negotiation-charset",
3631                                                charset);
3632                 if (lang)
3633                     ZOOM_connection_option_set(c, "negotiation-lang",
3634                                                lang);
3635
3636                 ZOOM_connection_option_set(
3637                     c,  "negotiation-charset-in-effect-for-records",
3638                     (sel != 0) ? "1" : "0");
3639                 nmem_destroy(tmpmem);
3640             }
3641         }
3642         break;
3643     case Z_APDU_searchResponse:
3644         yaz_log(log_api, "%p recv_apdu Search response", c);
3645         handle_search_response(c, apdu->u.searchResponse);
3646         if (send_sort_present(c) == zoom_complete)
3647             ZOOM_connection_remove_task(c);
3648         break;
3649     case Z_APDU_presentResponse:
3650         yaz_log(log_api, "%p recv_apdu Present response", c);
3651         handle_present_response(c, apdu->u.presentResponse);
3652         if (send_present(c) == zoom_complete)
3653             ZOOM_connection_remove_task(c);
3654         break;
3655     case Z_APDU_sortResponse:
3656         yaz_log(log_api, "%p recv_apdu Sort response", c);
3657         sort_response(c, apdu->u.sortResponse);
3658         if (send_present(c) == zoom_complete)
3659             ZOOM_connection_remove_task(c);
3660         break;
3661     case Z_APDU_scanResponse:
3662         yaz_log(log_api, "%p recv_apdu Scan response", c);
3663         scan_response(c, apdu->u.scanResponse);
3664         ZOOM_connection_remove_task(c);
3665         break;
3666     case Z_APDU_extendedServicesResponse:
3667         yaz_log(log_api, "%p recv_apdu Extended Services response", c);
3668         es_response(c, apdu->u.extendedServicesResponse);
3669         ZOOM_connection_remove_task(c);
3670         break;
3671     case Z_APDU_close:
3672         yaz_log(log_api, "%p recv_apdu Close PDU", c);
3673         if (!ZOOM_test_reconnect(c))
3674         {
3675             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3676             do_close(c);
3677         }
3678         break;
3679     default:
3680         yaz_log(log_api, "%p Received unknown PDU", c);
3681         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3682         do_close(c);
3683     }
3684 }
3685
3686 #if YAZ_HAVE_XML2
3687 static void handle_srw_response(ZOOM_connection c,
3688                                 Z_SRW_searchRetrieveResponse *res)
3689 {
3690     ZOOM_resultset resultset = 0;
3691     int i;
3692     NMEM nmem;
3693     ZOOM_Event event;
3694     int *start;
3695     const char *syntax, *elementSetName;
3696
3697     if (!c->tasks)
3698         return;
3699
3700     switch(c->tasks->which)
3701     {
3702     case ZOOM_TASK_SEARCH:
3703         resultset = c->tasks->u.search.resultset;
3704         start = &c->tasks->u.search.start;
3705         syntax = c->tasks->u.search.syntax;
3706         elementSetName = c->tasks->u.search.elementSetName;
3707         break;
3708     case ZOOM_TASK_RETRIEVE:
3709         resultset = c->tasks->u.retrieve.resultset;
3710         start = &c->tasks->u.retrieve.start;
3711         syntax = c->tasks->u.retrieve.syntax;
3712         elementSetName = c->tasks->u.retrieve.elementSetName;
3713         break;
3714     default:
3715         return;
3716     }
3717     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
3718     ZOOM_connection_put_event(c, event);
3719
3720     resultset->size = 0;
3721
3722     yaz_log(log_details, "%p handle_srw_response got SRW response OK", c);
3723
3724     if (res->numberOfRecords)
3725         resultset->size = *res->numberOfRecords;
3726
3727     for (i = 0; i<res->num_records; i++)
3728     {
3729         int pos;
3730
3731         Z_NamePlusRecord *npr = (Z_NamePlusRecord *)
3732             odr_malloc(c->odr_in, sizeof(Z_NamePlusRecord));
3733
3734         if (res->records[i].recordPosition &&
3735             *res->records[i].recordPosition > 0)
3736             pos = *res->records[i].recordPosition - 1;
3737         else
3738             pos = *start + i;
3739
3740         npr->databaseName = 0;
3741         npr->which = Z_NamePlusRecord_databaseRecord;
3742         npr->u.databaseRecord = (Z_External *)
3743             odr_malloc(c->odr_in, sizeof(Z_External));
3744         npr->u.databaseRecord->descriptor = 0;
3745         npr->u.databaseRecord->direct_reference =
3746             odr_oiddup(c->odr_in, yaz_oid_recsyn_xml);
3747         npr->u.databaseRecord->which = Z_External_octet;
3748
3749         npr->u.databaseRecord->u.octet_aligned = (Odr_oct *)
3750             odr_malloc(c->odr_in, sizeof(Odr_oct));
3751         npr->u.databaseRecord->u.octet_aligned->buf = (unsigned char*)
3752             res->records[i].recordData_buf;
3753         npr->u.databaseRecord->u.octet_aligned->len =
3754             npr->u.databaseRecord->u.octet_aligned->size =
3755             res->records[i].recordData_len;
3756         record_cache_add(resultset, npr, pos, syntax, elementSetName);
3757     }
3758     if (res->num_diagnostics > 0)
3759     {
3760         const char *uri = res->diagnostics[0].uri;
3761         if (uri)
3762         {
3763             int code = 0;
3764             const char *cp;
3765             if ((cp = strrchr(uri, '/')))
3766                 code = atoi(cp+1);
3767             set_dset_error(c, code, uri,
3768                            res->diagnostics[0].details, 0);
3769         }
3770     }
3771     nmem = odr_extract_mem(c->odr_in);
3772     nmem_transfer(odr_getmem(resultset->odr), nmem);
3773     nmem_destroy(nmem);
3774 }
3775 #endif
3776
3777 #if YAZ_HAVE_XML2
3778 static void handle_http(ZOOM_connection c, Z_HTTP_Response *hres)
3779 {
3780     int ret = -1;
3781     const char *addinfo = 0;
3782     const char *connection_head = z_HTTP_header_lookup(hres->headers,
3783                                                        "Connection");
3784     ZOOM_connection_set_mask(c, 0);
3785     yaz_log(log_details, "%p handle_http", c);
3786
3787     if (!yaz_srw_check_content_type(hres))
3788         addinfo = "content-type";
3789     else
3790     {
3791         Z_SOAP *soap_package = 0;
3792         ODR o = c->odr_in;
3793         Z_SOAP_Handler soap_handlers[2] = {
3794             {YAZ_XMLNS_SRU_v1_1, 0, (Z_SOAP_fun) yaz_srw_codec},
3795             {0, 0, 0}
3796         };
3797         ret = z_soap_codec(o, &soap_package,
3798                            &hres->content_buf, &hres->content_len,
3799                            soap_handlers);
3800         if (!ret && soap_package->which == Z_SOAP_generic &&
3801             soap_package->u.generic->no == 0)
3802         {
3803             Z_SRW_PDU *sr = (Z_SRW_PDU*) soap_package->u.generic->p;
3804             if (sr->which == Z_SRW_searchRetrieve_response)
3805                 handle_srw_response(c, sr->u.response);
3806             else
3807                 ret = -1;
3808         }
3809         else if (!ret && (soap_package->which == Z_SOAP_fault
3810                           || soap_package->which == Z_SOAP_error))
3811         {
3812             set_HTTP_error(c, hres->code,
3813                            soap_package->u.fault->fault_code,
3814                            soap_package->u.fault->fault_string);
3815         }
3816         else
3817             ret = -1;
3818     }
3819     if (ret)
3820     {
3821         if (hres->code != 200)
3822             set_HTTP_error(c, hres->code, 0, 0);
3823         else
3824             set_ZOOM_error(c, ZOOM_ERROR_DECODE, addinfo);
3825         do_close(c);
3826     }
3827     ZOOM_connection_remove_task(c);
3828     if (!strcmp(hres->version, "1.0"))
3829     {
3830         /* HTTP 1.0: only if Keep-Alive we stay alive.. */
3831         if (!connection_head || strcmp(connection_head, "Keep-Alive"))
3832             do_close(c);
3833     }
3834     else
3835     {
3836         /* HTTP 1.1: only if no close we stay alive .. */
3837         if (connection_head && !strcmp(connection_head, "close"))
3838             do_close(c);
3839     }
3840 }
3841 #endif
3842
3843 static int do_read(ZOOM_connection c)
3844 {
3845     int r, more;
3846     ZOOM_Event event;
3847
3848     event = ZOOM_Event_create(ZOOM_EVENT_RECV_DATA);
3849     ZOOM_connection_put_event(c, event);
3850
3851     r = cs_get(c->cs, &c->buf_in, &c->len_in);
3852     more = cs_more(c->cs);
3853     yaz_log(log_details, "%p do_read len=%d more=%d", c, r, more);
3854     if (r == 1)
3855         return 0;
3856     if (r <= 0)
3857     {
3858         if (!ZOOM_test_reconnect(c))
3859         {
3860             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3861             do_close(c);
3862         }
3863     }
3864     else
3865     {
3866         Z_GDU *gdu;
3867         ZOOM_Event event;
3868
3869         odr_reset(c->odr_in);
3870         odr_setbuf(c->odr_in, c->buf_in, r, 0);
3871         event = ZOOM_Event_create(ZOOM_EVENT_RECV_APDU);
3872         ZOOM_connection_put_event(c, event);
3873
3874         if (!z_GDU(c->odr_in, &gdu, 0, 0))
3875         {
3876             int x;
3877             int err = odr_geterrorx(c->odr_in, &x);
3878             char msg[100];
3879             const char *element = odr_getelement(c->odr_in);
3880             yaz_snprintf(msg, sizeof(msg),
3881                     "ODR code %d:%d element=%s offset=%d",
3882                     err, x, element ? element : "<unknown>",
3883                     odr_offset(c->odr_in));
3884             set_ZOOM_error(c, ZOOM_ERROR_DECODE, msg);
3885             if (log_api)
3886             {
3887                 FILE *ber_file = yaz_log_file();
3888                 if (ber_file)
3889                     odr_dumpBER(ber_file, c->buf_in, r);
3890             }
3891             do_close(c);
3892         }
3893         else if (gdu->which == Z_GDU_Z3950)
3894             recv_apdu(c, gdu->u.z3950);
3895         else if (gdu->which == Z_GDU_HTTP_Response)
3896         {
3897 #if YAZ_HAVE_XML2
3898             handle_http(c, gdu->u.HTTP_Response);
3899 #else
3900             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3901             do_close(c);
3902 #endif
3903         }
3904         c->reconnect_ok = 0;
3905     }
3906     return 1;
3907 }
3908
3909 static zoom_ret do_write_ex(ZOOM_connection c, char *buf_out, int len_out)
3910 {
3911     int r;
3912     ZOOM_Event event;
3913
3914     event = ZOOM_Event_create(ZOOM_EVENT_SEND_DATA);
3915     ZOOM_connection_put_event(c, event);
3916
3917     yaz_log(log_details, "%p do_write_ex len=%d", c, len_out);
3918     if ((r = cs_put(c->cs, buf_out, len_out)) < 0)
3919     {
3920         yaz_log(log_details, "%p do_write_ex write failed", c);
3921         if (ZOOM_test_reconnect(c))
3922         {
3923             return zoom_pending;
3924         }
3925         if (c->state == STATE_CONNECTING)
3926             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3927         else
3928             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3929         do_close(c);
3930         return zoom_complete;
3931     }
3932     else if (r == 1)
3933     {
3934         int mask = ZOOM_SELECT_EXCEPT;
3935         if (c->cs->io_pending & CS_WANT_WRITE)
3936             mask += ZOOM_SELECT_WRITE;
3937         if (c->cs->io_pending & CS_WANT_READ)
3938             mask += ZOOM_SELECT_READ;
3939         ZOOM_connection_set_mask(c, mask);
3940         yaz_log(log_details, "%p do_write_ex write incomplete mask=%d",
3941                 c, c->mask);
3942     }
3943     else
3944     {
3945         ZOOM_connection_set_mask(c, ZOOM_SELECT_READ|ZOOM_SELECT_EXCEPT);
3946         yaz_log(log_details, "%p do_write_ex write complete mask=%d",
3947                 c, c->mask);
3948     }
3949     return zoom_pending;
3950 }
3951
3952 static zoom_ret do_write(ZOOM_connection c)
3953 {
3954     return do_write_ex(c, c->buf_out, c->len_out);
3955 }
3956
3957
3958 ZOOM_API(const char *)
3959     ZOOM_connection_option_get(ZOOM_connection c, const char *key)
3960 {
3961     return ZOOM_options_get(c->options, key);
3962 }
3963
3964 ZOOM_API(const char *)
3965     ZOOM_connection_option_getl(ZOOM_connection c, const char *key, int *lenp)
3966 {
3967     return ZOOM_options_getl(c->options, key, lenp);
3968 }
3969
3970 ZOOM_API(void)
3971     ZOOM_connection_option_set(ZOOM_connection c, const char *key,
3972                                const char *val)
3973 {
3974     ZOOM_options_set(c->options, key, val);
3975 }
3976
3977 ZOOM_API(void)
3978     ZOOM_connection_option_setl(ZOOM_connection c, const char *key,
3979                                 const char *val, int len)
3980 {
3981     ZOOM_options_setl(c->options, key, val, len);
3982 }
3983
3984 ZOOM_API(const char *)
3985     ZOOM_resultset_option_get(ZOOM_resultset r, const char *key)
3986 {
3987     return ZOOM_options_get(r->options, key);
3988 }
3989
3990 ZOOM_API(void)
3991     ZOOM_resultset_option_set(ZOOM_resultset r, const char *key,
3992                               const char *val)
3993 {
3994     ZOOM_options_set(r->options, key, val);
3995 }
3996
3997
3998 ZOOM_API(int)
3999     ZOOM_connection_errcode(ZOOM_connection c)
4000 {
4001     return ZOOM_connection_error(c, 0, 0);
4002 }
4003
4004 ZOOM_API(const char *)
4005     ZOOM_connection_errmsg(ZOOM_connection c)
4006 {
4007     const char *msg;
4008     ZOOM_connection_error(c, &msg, 0);
4009     return msg;
4010 }
4011
4012 ZOOM_API(const char *)
4013     ZOOM_connection_addinfo(ZOOM_connection c)
4014 {
4015     const char *addinfo;
4016     ZOOM_connection_error(c, 0, &addinfo);
4017     return addinfo;
4018 }
4019
4020 ZOOM_API(const char *)
4021     ZOOM_connection_diagset(ZOOM_connection c)
4022 {
4023     const char *diagset;
4024     ZOOM_connection_error_x(c, 0, 0, &diagset);
4025     return diagset;
4026 }
4027
4028 ZOOM_API(const char *)
4029     ZOOM_diag_str(int error)
4030 {
4031     switch (error)
4032     {
4033     case ZOOM_ERROR_NONE:
4034         return "No error";
4035     case ZOOM_ERROR_CONNECT:
4036         return "Connect failed";
4037     case ZOOM_ERROR_MEMORY:
4038         return "Out of memory";
4039     case ZOOM_ERROR_ENCODE:
4040         return "Encoding failed";
4041     case ZOOM_ERROR_DECODE:
4042         return "Decoding failed";
4043     case ZOOM_ERROR_CONNECTION_LOST:
4044         return "Connection lost";
4045     case ZOOM_ERROR_INIT:
4046         return "Init rejected";
4047     case ZOOM_ERROR_INTERNAL:
4048         return "Internal failure";
4049     case ZOOM_ERROR_TIMEOUT:
4050         return "Timeout";
4051     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
4052         return "Unsupported protocol";
4053     case ZOOM_ERROR_UNSUPPORTED_QUERY:
4054         return "Unsupported query type";
4055     case ZOOM_ERROR_INVALID_QUERY:
4056         return "Invalid query";
4057     case ZOOM_ERROR_CQL_PARSE:
4058         return "CQL parsing error";
4059     case ZOOM_ERROR_CQL_TRANSFORM:
4060         return "CQL transformation error";
4061     case ZOOM_ERROR_CCL_CONFIG:
4062         return "CCL configuration error";
4063     case ZOOM_ERROR_CCL_PARSE:
4064         return "CCL parsing error";
4065     default:
4066         return diagbib1_str(error);
4067     }
4068 }
4069
4070 ZOOM_API(int)
4071     ZOOM_connection_error_x(ZOOM_connection c, const char **cp,
4072                             const char **addinfo, const char **diagset)
4073 {
4074     int error = c->error;
4075     if (cp)
4076     {
4077         if (!c->diagset || !strcmp(c->diagset, "ZOOM"))
4078             *cp = ZOOM_diag_str(error);
4079         else if (!strcmp(c->diagset, "HTTP"))
4080             *cp = z_HTTP_errmsg(c->error);
4081         else if (!strcmp(c->diagset, "Bib-1"))
4082             *cp = ZOOM_diag_str(error);
4083         else if (!strcmp(c->diagset, "info:srw/diagnostic/1"))
4084             *cp = yaz_diag_srw_str(c->error);
4085         else
4086             *cp = "Unknown error and diagnostic set";
4087     }
4088     if (addinfo)
4089         *addinfo = c->addinfo ? c->addinfo : "";
4090     if (diagset)
4091         *diagset = c->diagset ? c->diagset : "";
4092     return c->error;
4093 }
4094
4095 ZOOM_API(int)
4096     ZOOM_connection_error(ZOOM_connection c, const char **cp,
4097                           const char **addinfo)
4098 {
4099     return ZOOM_connection_error_x(c, cp, addinfo, 0);
4100 }
4101
4102 static void ZOOM_connection_do_io(ZOOM_connection c, int mask)
4103 {
4104     ZOOM_Event event = 0;
4105     int r = cs_look(c->cs);
4106     yaz_log(log_details, "%p ZOOM_connection_do_io mask=%d cs_look=%d",
4107             c, mask, r);
4108
4109     if (r == CS_NONE)
4110     {
4111         event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
4112         set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
4113         do_close(c);
4114         ZOOM_connection_put_event(c, event);
4115     }
4116     else if (r == CS_CONNECT)
4117     {
4118         int ret = ret = cs_rcvconnect(c->cs);
4119         yaz_log(log_details, "%p ZOOM_connection_do_io "
4120                 "cs_rcvconnect returned %d", c, ret);
4121         if (ret == 1)
4122         {
4123             int mask = ZOOM_SELECT_EXCEPT;
4124             if (c->cs->io_pending & CS_WANT_WRITE)
4125                 mask += ZOOM_SELECT_WRITE;
4126             if (c->cs->io_pending & CS_WANT_READ)
4127                 mask += ZOOM_SELECT_READ;
4128             ZOOM_connection_set_mask(c, mask);
4129             event = ZOOM_Event_create(ZOOM_EVENT_NONE);
4130             ZOOM_connection_put_event(c, event);
4131         }
4132         else if (ret == 0)
4133         {
4134             event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
4135             ZOOM_connection_put_event(c, event);
4136             get_cert(c);
4137             if (c->proto == PROTO_Z3950)
4138                 ZOOM_connection_send_init(c);
4139             else
4140             {
4141                 /* no init request for SRW .. */
4142                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
4143                 ZOOM_connection_remove_task(c);
4144                 ZOOM_connection_set_mask(c, 0);
4145                 ZOOM_connection_exec_task(c);
4146             }
4147             c->state = STATE_ESTABLISHED;
4148         }
4149         else
4150         {
4151             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
4152             do_close(c);
4153         }
4154     }
4155     else
4156     {
4157         if (mask & ZOOM_SELECT_EXCEPT)
4158         {
4159             if (!ZOOM_test_reconnect(c))
4160             {
4161                 set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
4162                 do_close(c);
4163             }
4164             return;
4165         }
4166         if (mask & ZOOM_SELECT_READ)
4167             do_read(c);
4168         if (c->cs && (mask & ZOOM_SELECT_WRITE))
4169             do_write(c);
4170     }
4171 }
4172
4173 ZOOM_API(int)
4174     ZOOM_connection_last_event(ZOOM_connection cs)
4175 {
4176     if (!cs)
4177         return ZOOM_EVENT_NONE;
4178     return cs->last_event;
4179 }
4180
4181
4182 static void cql2pqf_wrbuf_puts(const char *buf, void *client_data)
4183 {
4184     WRBUF wrbuf = (WRBUF) client_data;
4185     wrbuf_puts(wrbuf, buf);
4186 }
4187
4188 /*
4189  * Returns an xmalloc()d string containing RPN that corresponds to the
4190  * CQL passed in.  On error, sets the Connection object's error state
4191  * and returns a null pointer.
4192  * ### We could cache CQL parser and/or transformer in Connection.
4193  */
4194 static char *cql2pqf(ZOOM_connection c, const char *cql)
4195 {
4196     CQL_parser parser;
4197     int error;
4198     const char *cqlfile;
4199     cql_transform_t trans;
4200     char *result = 0;
4201
4202     parser = cql_parser_create();
4203     if ((error = cql_parser_string(parser, cql)) != 0) {
4204         cql_parser_destroy(parser);
4205         set_ZOOM_error(c, ZOOM_ERROR_CQL_PARSE, cql);
4206         return 0;
4207     }
4208
4209     cqlfile = ZOOM_connection_option_get(c, "cqlfile");
4210     if (cqlfile == 0)
4211     {
4212         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, "no CQL transform file");
4213     }
4214     else if ((trans = cql_transform_open_fname(cqlfile)) == 0)
4215     {
4216         char buf[512];
4217         sprintf(buf, "can't open CQL transform file '%.200s': %.200s",
4218                 cqlfile, strerror(errno));
4219         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4220     }
4221     else
4222     {
4223         WRBUF wrbuf_result = wrbuf_alloc();
4224         error = cql_transform(trans, cql_parser_result(parser),
4225                               cql2pqf_wrbuf_puts, wrbuf_result);
4226         if (error != 0) {
4227             char buf[512];
4228             const char *addinfo;
4229             error = cql_transform_error(trans, &addinfo);
4230             sprintf(buf, "%.200s (addinfo=%.200s)",
4231                     cql_strerror(error), addinfo);
4232             set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4233         }
4234         else
4235         {
4236             result = xstrdup(wrbuf_cstr(wrbuf_result));
4237         }
4238         cql_transform_close(trans);
4239         wrbuf_destroy(wrbuf_result);
4240     }
4241     cql_parser_destroy(parser);
4242     return result;
4243 }
4244
4245 ZOOM_API(int) ZOOM_connection_fire_event_timeout(ZOOM_connection c)
4246 {
4247     if (c->mask)
4248     {
4249         ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
4250         /* timeout and this connection was waiting */
4251         set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
4252         do_close(c);
4253         ZOOM_connection_put_event(c, event);
4254     }
4255     return 0;
4256 }
4257
4258 ZOOM_API(int)
4259     ZOOM_connection_process(ZOOM_connection c)
4260 {
4261     ZOOM_Event event;
4262     if (!c)
4263         return 0;
4264
4265     event = ZOOM_connection_get_event(c);
4266     if (event)
4267     {
4268         ZOOM_Event_destroy(event);
4269         return 1;
4270     }
4271     ZOOM_connection_exec_task(c);
4272     event = ZOOM_connection_get_event(c);
4273     if (event)
4274     {
4275         ZOOM_Event_destroy(event);
4276         return 1;
4277     }
4278     return 0;
4279 }
4280
4281 ZOOM_API(int)
4282     ZOOM_event_nonblock(int no, ZOOM_connection *cs)
4283 {
4284     int i;
4285
4286     yaz_log(log_details, "ZOOM_process_event(no=%d,cs=%p)", no, cs);
4287
4288     for (i = 0; i<no; i++)
4289     {
4290         ZOOM_connection c = cs[i];
4291
4292         if (c && ZOOM_connection_process(c))
4293             return i+1;
4294     }
4295     return 0;
4296 }
4297
4298 ZOOM_API(int) ZOOM_connection_fire_event_socket(ZOOM_connection c, int mask)
4299 {
4300     if (c->mask && mask)
4301         ZOOM_connection_do_io(c, mask);
4302     return 0;
4303 }
4304
4305 ZOOM_API(int) ZOOM_connection_get_socket(ZOOM_connection c)
4306 {
4307     if (c->cs)
4308         return cs_fileno(c->cs);
4309     return -1;
4310 }
4311
4312 ZOOM_API(int) ZOOM_connection_set_mask(ZOOM_connection c, int mask)
4313 {
4314     c->mask = mask;
4315     if (!c->cs)
4316         return -1;
4317     return 0;
4318 }
4319
4320 ZOOM_API(int) ZOOM_connection_get_mask(ZOOM_connection c)
4321 {
4322     if (c->cs)
4323         return c->mask;
4324     return 0;
4325 }
4326
4327 ZOOM_API(int) ZOOM_connection_get_timeout(ZOOM_connection c)
4328 {
4329     return ZOOM_options_get_int(c->options, "timeout", 30);
4330 }
4331
4332 /*
4333  * Local variables:
4334  * c-basic-offset: 4
4335  * indent-tabs-mode: nil
4336  * End:
4337  * vim: shiftwidth=4 tabstop=8 expandtab
4338  */
4339