src/zoom-c.c

   1 /*
   2  * Copyright (C) 1995-2006, Index Data ApS
   3  * See the file LICENSE for details.
   4  *
   5  * $Id: zoom-c.c,v 1.95 2006-11-01 15:39:05 adam Exp $
   6  */
   7 /**
   8  * \file zoom-c.c
   9  * \brief Implements ZOOM C interface.
  10  */
  11
  12 #include <assert.h>
  13 #include <string.h>
  14 #include <errno.h>
  15 #include "zoom-p.h"
  16
  17 #include <yaz/yaz-util.h>
  18 #include <yaz/xmalloc.h>
  19 #include <yaz/otherinfo.h>
  20 #include <yaz/log.h>
  21 #include <yaz/pquery.h>
  22 #include <yaz/marcdisp.h>
  23 #include <yaz/diagbib1.h>
  24 #include <yaz/charneg.h>
  25 #include <yaz/ill.h>
  26 #include <yaz/srw.h>
  27 #include <yaz/cql.h>
  28 #include <yaz/ccl.h>
  29
  30 #if HAVE_SYS_TYPES_H
  31 #include <sys/types.h>
  32 #endif
  33 #if HAVE_SYS_TIME_H
  34 #include <sys/time.h>
  35 #endif
  36 #if HAVE_SYS_POLL_H
  37 #include <sys/poll.h>
  38 #endif
  39 #if HAVE_SYS_SELECT_H
  40 #include <sys/select.h>
  41 #endif
  42 #ifdef WIN32
  43 #if FD_SETSIZE < 512
  44 #define FD_SETSIZE 512
  45 #endif
  46 #include <winsock.h>
  47 #endif
  48
  49 static int log_api = 0;
  50 static int log_details = 0;
  51
  52 typedef enum {
  53     zoom_pending,
  54     zoom_complete
  55 } zoom_ret;
  56
  57 static zoom_ret ZOOM_connection_send_init(ZOOM_connection c);
  58 static zoom_ret do_write_ex(ZOOM_connection c, char *buf_out, int len_out);
  59 static char *cql2pqf(ZOOM_connection c, const char *cql);
  60
  61 static void initlog(void)
  62 {
  63     static int log_level_initialized = 0;
  64     if (!log_level_initialized)
  65     {
  66         log_api = yaz_log_module_level("zoom");
  67         log_details = yaz_log_module_level("zoomdetails");
  68         log_level_initialized = 1;
  69     }
  70 }
  71
  72 static ZOOM_Event ZOOM_Event_create(int kind)
  73 {
  74     ZOOM_Event event = (ZOOM_Event) xmalloc(sizeof(*event));
  75     event->kind = kind;
  76     event->next = 0;
  77     event->prev = 0;
  78     yaz_log(log_details, "ZOOM_Event_create(kind=%d)", kind);
  79     return event;
  80 }
  81
  82 static void ZOOM_Event_destroy(ZOOM_Event event)
  83 {
  84     xfree(event);
  85 }
  86
  87 static void ZOOM_connection_put_event(ZOOM_connection c, ZOOM_Event event)
  88 {
  89     if (c->m_queue_back)
  90     {
  91         c->m_queue_back->prev = event;
  92         assert(c->m_queue_front);
  93     }
  94     else
  95     {
  96         assert(!c->m_queue_front);
  97         c->m_queue_front = event;
  98     }
  99     event->next = c->m_queue_back;
 100     event->prev = 0;
 101     c->m_queue_back = event;
 102 }
 103
 104 static ZOOM_Event ZOOM_connection_get_event(ZOOM_connection c)
 105 {
 106     ZOOM_Event event = c->m_queue_front;
 107     if (!event)
 108     {
 109         c->last_event = ZOOM_EVENT_NONE;
 110         return 0;
 111     }
 112     assert(c->m_queue_back);
 113     c->m_queue_front = event->prev;
 114     if (c->m_queue_front)
 115     {
 116         assert(c->m_queue_back);
 117         c->m_queue_front->next = 0;
 118     }
 119     else
 120         c->m_queue_back = 0;
 121     c->last_event = event->kind;
 122     return event;
 123 }
 124
 125
 126 static void set_dset_error(ZOOM_connection c, int error,
 127                            const char *dset,
 128                            const char *addinfo, const char *addinfo2)
 129 {
 130     char *cp;
 131
 132     xfree(c->addinfo);
 133     c->addinfo = 0;
 134     c->error = error;
 135     if (!c->diagset || strcmp(dset, c->diagset))
 136     {
 137         xfree(c->diagset);
 138         c->diagset = xstrdup(dset);
 139         /* remove integer part from SRW diagset .. */
 140         if ((cp = strrchr(c->diagset, '/')))
 141             *cp = '\0';
 142     }
 143     if (addinfo && addinfo2)
 144     {
 145         c->addinfo = (char*) xmalloc(strlen(addinfo) + strlen(addinfo2) + 2);
 146         strcpy(c->addinfo, addinfo);
 147         strcat(c->addinfo, addinfo2);
 148     }
 149     else if (addinfo)
 150         c->addinfo = xstrdup(addinfo);
 151     if (error)
 152         yaz_log(log_api, "%p set_dset_error %s %s:%d %s %s",
 153                 c, c->host_port ? c->host_port : "<>", dset, error,
 154                 addinfo ? addinfo : "",
 155                 addinfo2 ? addinfo2 : "");
 156 }
 157
 158 #if YAZ_HAVE_XML2
 159 static void set_HTTP_error(ZOOM_connection c, int error,
 160                            const char *addinfo, const char *addinfo2)
 161 {
 162     set_dset_error(c, error, "HTTP", addinfo, addinfo2);
 163 }
 164 #endif
 165
 166 static void set_ZOOM_error(ZOOM_connection c, int error,
 167                            const char *addinfo)
 168 {
 169     set_dset_error(c, error, "ZOOM", addinfo, 0);
 170 }
 171
 172 static void clear_error(ZOOM_connection c)
 173 {
 174     /*
 175      * If an error is tied to an operation then it's ok to clear: for
 176      * example, a diagnostic returned from a search is cleared by a
 177      * subsequent search.  However, problems such as Connection Lost
 178      * or Init Refused are not cleared, because they are not
 179      * recoverable: doing another search doesn't help.
 180      */
 181     switch (c->error)
 182     {
 183     case ZOOM_ERROR_CONNECT:
 184     case ZOOM_ERROR_MEMORY:
 185     case ZOOM_ERROR_DECODE:
 186     case ZOOM_ERROR_CONNECTION_LOST:
 187     case ZOOM_ERROR_INIT:
 188     case ZOOM_ERROR_INTERNAL:
 189     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
 190         break;
 191     default:
 192         set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 193     }
 194 }
 195
 196 void ZOOM_connection_show_task(ZOOM_task task)
 197 {
 198     switch(task->which)
 199     {
 200     case ZOOM_TASK_SEARCH:
 201         yaz_log(YLOG_LOG, "search p=%p", task);
 202         break;
 203     case ZOOM_TASK_RETRIEVE:
 204         yaz_log(YLOG_LOG, "retrieve p=%p", task);
 205         break;
 206     case ZOOM_TASK_CONNECT:
 207         yaz_log(YLOG_LOG, "connect p=%p", task);
 208         break;
 209     case ZOOM_TASK_SCAN:
 210         yaz_log(YLOG_LOG, "scant p=%p", task);
 211         break;
 212     }
 213 }
 214
 215 void ZOOM_connection_show_tasks(ZOOM_connection c)
 216 {
 217     ZOOM_task task;
 218     yaz_log(YLOG_LOG, "connection p=%p tasks", c);
 219     for (task = c->tasks; task; task = task->next)
 220         ZOOM_connection_show_task(task);
 221 }
 222
 223 ZOOM_task ZOOM_connection_add_task(ZOOM_connection c, int which)
 224 {
 225     ZOOM_task *taskp = &c->tasks;
 226     while (*taskp)
 227         taskp = &(*taskp)->next;
 228     *taskp = (ZOOM_task) xmalloc(sizeof(**taskp));
 229     (*taskp)->running = 0;
 230     (*taskp)->which = which;
 231     (*taskp)->next = 0;
 232     clear_error(c);
 233     return *taskp;
 234 }
 235
 236 ZOOM_API(int) ZOOM_connection_is_idle(ZOOM_connection c)
 237 {
 238     return c->tasks ? 0 : 1;
 239 }
 240
 241 ZOOM_task ZOOM_connection_insert_task(ZOOM_connection c, int which)
 242 {
 243     ZOOM_task task = (ZOOM_task) xmalloc(sizeof(*task));
 244
 245     task->next = c->tasks;
 246     c->tasks = task;
 247
 248     task->running = 0;
 249     task->which = which;
 250     clear_error(c);
 251     return task;
 252 }
 253
 254 void ZOOM_connection_remove_task(ZOOM_connection c)
 255 {
 256     ZOOM_task task = c->tasks;
 257
 258     if (task)
 259     {
 260         c->tasks = task->next;
 261         switch (task->which)
 262         {
 263         case ZOOM_TASK_SEARCH:
 264             ZOOM_resultset_destroy(task->u.search.resultset);
 265             xfree(task->u.search.syntax);
 266             xfree(task->u.search.elementSetName);
 267             break;
 268         case ZOOM_TASK_RETRIEVE:
 269             ZOOM_resultset_destroy(task->u.retrieve.resultset);
 270             xfree(task->u.retrieve.syntax);
 271             xfree(task->u.retrieve.elementSetName);
 272             break;
 273         case ZOOM_TASK_CONNECT:
 274             break;
 275         case ZOOM_TASK_SCAN:
 276             ZOOM_scanset_destroy(task->u.scan.scan);
 277             break;
 278         case ZOOM_TASK_PACKAGE:
 279             ZOOM_package_destroy(task->u.package);
 280             break;
 281         case ZOOM_TASK_SORT:
 282             ZOOM_resultset_destroy(task->u.sort.resultset);
 283             ZOOM_query_destroy(task->u.sort.q);
 284             break;
 285         default:
 286             assert(0);
 287         }
 288         xfree(task);
 289
 290         if (!c->tasks)
 291         {
 292             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_END);
 293             ZOOM_connection_put_event(c, event);
 294         }
 295     }
 296 }
 297
 298 static int ZOOM_connection_exec_task(ZOOM_connection c);
 299
 300 void ZOOM_connection_remove_tasks(ZOOM_connection c)
 301 {
 302     while (c->tasks)
 303         ZOOM_connection_remove_task(c);
 304 }
 305
 306 static ZOOM_record record_cache_lookup(ZOOM_resultset r, int pos,
 307                                        const char *syntax,
 308                                        const char *elementSetName);
 309
 310 ZOOM_API(ZOOM_connection)
 311     ZOOM_connection_create(ZOOM_options options)
 312 {
 313     ZOOM_connection c = (ZOOM_connection) xmalloc(sizeof(*c));
 314
 315     initlog();
 316
 317     yaz_log(log_api, "%p ZOOM_connection_create", c);
 318
 319     c->proto = PROTO_Z3950;
 320     c->cs = 0;
 321     c->mask = 0;
 322     c->reconnect_ok = 0;
 323     c->state = STATE_IDLE;
 324     c->addinfo = 0;
 325     c->diagset = 0;
 326     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 327     c->buf_in = 0;
 328     c->len_in = 0;
 329     c->buf_out = 0;
 330     c->len_out = 0;
 331     c->resultsets = 0;
 332
 333     c->options = ZOOM_options_create_with_parent(options);
 334
 335     c->host_port = 0;
 336     c->path = 0;
 337     c->proxy = 0;
 338
 339     c->charset = c->lang = 0;
 340
 341     c->cookie_out = 0;
 342     c->cookie_in = 0;
 343     c->client_IP = 0;
 344     c->tasks = 0;
 345
 346     c->odr_in = odr_createmem(ODR_DECODE);
 347     c->odr_out = odr_createmem(ODR_ENCODE);
 348
 349     c->async = 0;
 350     c->support_named_resultsets = 0;
 351     c->last_event = ZOOM_EVENT_NONE;
 352
 353     c->m_queue_front = 0;
 354     c->m_queue_back = 0;
 355     return c;
 356 }
 357
 358
 359 /* set database names. Take local databases (if set); otherwise
 360    take databases given in ZURL (if set); otherwise use Default */
 361 static char **set_DatabaseNames(ZOOM_connection con, ZOOM_options options,
 362                                 int *num, ODR odr)
 363 {
 364     char **databaseNames;
 365     const char *cp = ZOOM_options_get(options, "databaseName");
 366
 367     if ((!cp || !*cp) && con->host_port)
 368     {
 369         if (strncmp(con->host_port, "unix:", 5) == 0)
 370             cp = strchr(con->host_port+5, ':');
 371         else
 372             cp = strchr(con->host_port, '/');
 373         if (cp)
 374             cp++;
 375     }
 376     if (!cp)
 377         cp = "Default";
 378     nmem_strsplit(odr->mem, "+", cp,  &databaseNames, num);
 379     return databaseNames;
 380 }
 381
 382 ZOOM_API(ZOOM_connection)
 383     ZOOM_connection_new(const char *host, int portnum)
 384 {
 385     ZOOM_connection c = ZOOM_connection_create(0);
 386
 387     ZOOM_connection_connect(c, host, portnum);
 388     return c;
 389 }
 390
 391 static zoom_sru_mode get_sru_mode_from_string(const char *s)
 392 {
 393     if (!s || !*s)
 394         return zoom_sru_soap;
 395     if (!yaz_matchstr(s, "soap"))
 396         return zoom_sru_soap;
 397     else if (!yaz_matchstr(s, "get"))
 398         return zoom_sru_get;
 399     else if (!yaz_matchstr(s, "post"))
 400         return zoom_sru_post;
 401     return zoom_sru_error;
 402 }
 403
 404 ZOOM_API(void)
 405     ZOOM_connection_connect(ZOOM_connection c,
 406                             const char *host, int portnum)
 407 {
 408     const char *val;
 409     ZOOM_task task;
 410
 411     initlog();
 412
 413     yaz_log(log_api, "%p ZOOM_connection_connect host=%s portnum=%d",
 414             c, host, portnum);
 415
 416     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 417     ZOOM_connection_remove_tasks(c);
 418
 419     if (c->cs)
 420     {
 421         yaz_log(log_details, "%p ZOOM_connection_connect reconnect ok", c);
 422         c->reconnect_ok = 1;
 423         return;
 424     }
 425     yaz_log(log_details, "%p ZOOM_connection_connect connect", c);
 426     xfree(c->proxy);
 427     val = ZOOM_options_get(c->options, "proxy");
 428     if (val && *val)
 429     {
 430         yaz_log(log_details, "%p ZOOM_connection_connect proxy=%s", c, val);
 431         c->proxy = xstrdup(val);
 432     }
 433     else
 434         c->proxy = 0;
 435
 436     xfree(c->charset);
 437     val = ZOOM_options_get(c->options, "charset");
 438     if (val && *val)
 439     {
 440         yaz_log(log_details, "%p ZOOM_connection_connect charset=%s", c, val);
 441         c->charset = xstrdup(val);
 442     }
 443     else
 444         c->charset = 0;
 445
 446     xfree(c->lang);
 447     val = ZOOM_options_get(c->options, "lang");
 448     if (val && *val)
 449     {
 450         yaz_log(log_details, "%p ZOOM_connection_connect lang=%s", c, val);
 451         c->lang = xstrdup(val);
 452     }
 453     else
 454         c->lang = 0;
 455
 456     val = ZOOM_options_get(c->options, "sru");
 457     c->sru_mode = get_sru_mode_from_string(val);
 458
 459     xfree(c->host_port);
 460     if (portnum)
 461     {
 462         char hostn[128];
 463         sprintf(hostn, "%.80s:%d", host, portnum);
 464         c->host_port = xstrdup(hostn);
 465     }
 466     else
 467         c->host_port = xstrdup(host);
 468
 469     {
 470         /*
 471          * If the "<scheme>:" part of the host string is preceded by one
 472          * or more comma-separated <name>=<value> pairs, these are taken
 473          * to be options to be set on the connection object.  Among other
 474          * applications, this facility can be used to embed authentication
 475          * in a host string:
 476          *          user=admin,password=secret,tcp:localhost:9999
 477          */
 478         char *remainder = c->host_port;
 479         char *pcolon = strchr(remainder, ':');
 480         char *pcomma;
 481         char *pequals;
 482         while ((pcomma = strchr(remainder, ',')) != 0 &&
 483                (pcolon == 0 || pcomma < pcolon)) {
 484             *pcomma = '\0';
 485             if ((pequals = strchr(remainder, '=')) != 0) {
 486                 *pequals = '\0';
 487                 /*printf("# setting '%s'='%s'\n", remainder, pequals+1);*/
 488                 ZOOM_connection_option_set(c, remainder, pequals+1);
 489             }
 490             remainder = pcomma+1;
 491         }
 492
 493         if (remainder != c->host_port) {
 494             xfree(c->host_port);
 495             c->host_port = xstrdup(remainder);
 496             /*printf("# reset hp='%s'\n", remainder);*/
 497         }
 498     }
 499
 500     ZOOM_options_set(c->options, "host", c->host_port);
 501
 502     val = ZOOM_options_get(c->options, "cookie");
 503     if (val && *val)
 504     {
 505         yaz_log(log_details, "%p ZOOM_connection_connect cookie=%s", c, val);
 506         c->cookie_out = xstrdup(val);
 507     }
 508
 509     val = ZOOM_options_get(c->options, "clientIP");
 510     if (val && *val)
 511     {
 512         yaz_log(log_details, "%p ZOOM_connection_connect clientIP=%s",
 513                 c, val);
 514         c->client_IP = xstrdup(val);
 515     }
 516
 517     c->async = ZOOM_options_get_bool(c->options, "async", 0);
 518     yaz_log(log_details, "%p ZOOM_connection_connect async=%d", c, c->async);
 519
 520     task = ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 521
 522     if (!c->async)
 523     {
 524         while (ZOOM_event(1, &c))
 525             ;
 526     }
 527 }
 528
 529 ZOOM_API(ZOOM_query)
 530     ZOOM_query_create(void)
 531 {
 532     ZOOM_query s = (ZOOM_query) xmalloc(sizeof(*s));
 533
 534     yaz_log(log_details, "%p ZOOM_query_create", s);
 535     s->refcount = 1;
 536     s->z_query = 0;
 537     s->sort_spec = 0;
 538     s->odr = odr_createmem(ODR_ENCODE);
 539     s->query_string = 0;
 540
 541     return s;
 542 }
 543
 544 ZOOM_API(void)
 545     ZOOM_query_destroy(ZOOM_query s)
 546 {
 547     if (!s)
 548         return;
 549
 550     (s->refcount)--;
 551     yaz_log(log_details, "%p ZOOM_query_destroy count=%d", s, s->refcount);
 552     if (s->refcount == 0)
 553     {
 554         odr_destroy(s->odr);
 555         xfree(s);
 556     }
 557 }
 558
 559 ZOOM_API(int)
 560     ZOOM_query_prefix(ZOOM_query s, const char *str)
 561 {
 562     s->query_string = odr_strdup(s->odr, str);
 563     s->z_query = (Z_Query *) odr_malloc(s->odr, sizeof(*s->z_query));
 564     s->z_query->which = Z_Query_type_1;
 565     s->z_query->u.type_1 =  p_query_rpn(s->odr, PROTO_Z3950, str);
 566     if (!s->z_query->u.type_1)
 567     {
 568         yaz_log(log_details, "%p ZOOM_query_prefix str=%s failed", s, str);
 569         s->z_query = 0;
 570         return -1;
 571     }
 572     yaz_log(log_details, "%p ZOOM_query_prefix str=%s", s, str);
 573     return 0;
 574 }
 575
 576 ZOOM_API(int)
 577     ZOOM_query_cql(ZOOM_query s, const char *str)
 578 {
 579     Z_External *ext;
 580
 581     s->query_string = odr_strdup(s->odr, str);
 582
 583     ext = (Z_External *) odr_malloc(s->odr, sizeof(*ext));
 584     ext->direct_reference = odr_getoidbystr(s->odr, "1.2.840.10003.16.2");
 585     ext->indirect_reference = 0;
 586     ext->descriptor = 0;
 587     ext->which = Z_External_CQL;
 588     ext->u.cql = s->query_string;
 589
 590     s->z_query = (Z_Query *) odr_malloc(s->odr, sizeof(*s->z_query));
 591     s->z_query->which = Z_Query_type_104;
 592     s->z_query->u.type_104 =  ext;
 593
 594     yaz_log(log_details, "%p ZOOM_query_cql str=%s", s, str);
 595
 596     return 0;
 597 }
 598
 599 /*
 600  * Translate the CQL string client-side into RPN which is passed to
 601  * the server.  This is useful for server's that don't themselves
 602  * support CQL, for which ZOOM_query_cql() is useless.  `conn' is used
 603  * only as a place to stash diagnostics if compilation fails; if this
 604  * information is not needed, a null pointer may be used.
 605  */
 606 ZOOM_API(int)
 607     ZOOM_query_cql2rpn(ZOOM_query s, const char *str, ZOOM_connection conn)
 608 {
 609     char *rpn;
 610     int ret;
 611     ZOOM_connection freeme = 0;
 612
 613     yaz_log(log_details, "%p ZOOM_query_cql2rpn str=%s conn=%p", s, str, conn);
 614     if (conn == 0)
 615         conn = freeme = ZOOM_connection_create(0);
 616
 617     rpn = cql2pqf(conn, str);
 618     if (freeme != 0)
 619         ZOOM_connection_destroy(freeme);
 620     if (rpn == 0)
 621         return -1;
 622
 623     ret = ZOOM_query_prefix(s, rpn);
 624     xfree(rpn);
 625     return ret;
 626 }
 627
 628 /*
 629  * Analogous in every way to ZOOM_query_cql2rpn(), except that there
 630  * is no analogous ZOOM_query_ccl() that just sends uninterpreted CCL
 631  * to the server, as the YAZ GFS doesn't know how to handle this.
 632  */
 633 ZOOM_API(int)
 634     ZOOM_query_ccl2rpn(ZOOM_query s, const char *str, const char *config,
 635                        int *ccl_error, const char **error_string,
 636                        int *error_pos)
 637 {
 638     int ret;
 639     struct ccl_rpn_node *rpn;
 640     CCL_bibset bibset = ccl_qual_mk();
 641
 642     if (config)
 643         ccl_qual_buf(bibset, config);
 644
 645     rpn = ccl_find_str(bibset, str, ccl_error, error_pos);
 646     if (!rpn)
 647     {
 648         *error_string = ccl_err_msg(*ccl_error);
 649         ret = -1;
 650     }
 651     else
 652     {
 653         WRBUF wr = wrbuf_alloc();
 654         ccl_pquery(wr, rpn);
 655         ccl_rpn_delete(rpn);
 656         ret = ZOOM_query_prefix(s, wrbuf_buf(wr));
 657         wrbuf_free(wr, 1);
 658     }
 659     ccl_qual_rm(&bibset);
 660     return ret;
 661 }
 662
 663 ZOOM_API(int)
 664     ZOOM_query_sortby(ZOOM_query s, const char *criteria)
 665 {
 666     s->sort_spec = yaz_sort_spec(s->odr, criteria);
 667     if (!s->sort_spec)
 668     {
 669         yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s failed",
 670                 s, criteria);
 671         return -1;
 672     }
 673     yaz_log(log_details, "%p ZOOM_query_sortby criteria=%s", s, criteria);
 674     return 0;
 675 }
 676
 677 static zoom_ret do_write(ZOOM_connection c);
 678
 679 ZOOM_API(void)
 680     ZOOM_connection_destroy(ZOOM_connection c)
 681 {
 682     ZOOM_resultset r;
 683     if (!c)
 684         return;
 685     yaz_log(log_api, "%p ZOOM_connection_destroy", c);
 686     if (c->cs)
 687         cs_close(c->cs);
 688     for (r = c->resultsets; r; r = r->next)
 689         r->connection = 0;
 690
 691     xfree(c->buf_in);
 692     xfree(c->addinfo);
 693     xfree(c->diagset);
 694     odr_destroy(c->odr_in);
 695     odr_destroy(c->odr_out);
 696     ZOOM_options_destroy(c->options);
 697     ZOOM_connection_remove_tasks(c);
 698     xfree(c->host_port);
 699     xfree(c->path);
 700     xfree(c->proxy);
 701     xfree(c->charset);
 702     xfree(c->lang);
 703     xfree(c->cookie_out);
 704     xfree(c->cookie_in);
 705     xfree(c->client_IP);
 706     xfree(c);
 707 }
 708
 709 void ZOOM_resultset_addref(ZOOM_resultset r)
 710 {
 711     if (r)
 712     {
 713         (r->refcount)++;
 714         yaz_log(log_details, "%p ZOOM_resultset_addref count=%d",
 715                 r, r->refcount);
 716     }
 717 }
 718
 719 ZOOM_resultset ZOOM_resultset_create(void)
 720 {
 721     int i;
 722     ZOOM_resultset r = (ZOOM_resultset) xmalloc(sizeof(*r));
 723
 724     initlog();
 725
 726     yaz_log(log_details, "%p ZOOM_resultset_create", r);
 727     r->refcount = 1;
 728     r->size = 0;
 729     r->odr = odr_createmem(ODR_ENCODE);
 730     r->piggyback = 1;
 731     r->setname = 0;
 732     r->schema = 0;
 733     r->step = 0;
 734     for (i = 0; i<RECORD_HASH_SIZE; i++)
 735         r->record_hash[i] = 0;
 736     r->r_sort_spec = 0;
 737     r->query = 0;
 738     r->connection = 0;
 739     r->next = 0;
 740     r->databaseNames = 0;
 741     r->num_databaseNames = 0;
 742     return r;
 743 }
 744
 745 ZOOM_API(ZOOM_resultset)
 746     ZOOM_connection_search_pqf(ZOOM_connection c, const char *q)
 747 {
 748     ZOOM_resultset r;
 749     ZOOM_query s = ZOOM_query_create();
 750
 751     ZOOM_query_prefix(s, q);
 752
 753     r = ZOOM_connection_search(c, s);
 754     ZOOM_query_destroy(s);
 755     return r;
 756 }
 757
 758 ZOOM_API(ZOOM_resultset)
 759     ZOOM_connection_search(ZOOM_connection c, ZOOM_query q)
 760 {
 761     ZOOM_resultset r = ZOOM_resultset_create();
 762     ZOOM_task task;
 763     const char *cp;
 764     int start, count;
 765     const char *syntax, *elementSetName;
 766
 767     yaz_log(log_api, "%p ZOOM_connection_search set %p query %p", c, r, q);
 768     r->r_sort_spec = q->sort_spec;
 769     r->query = q;
 770
 771     r->options = ZOOM_options_create_with_parent(c->options);
 772
 773     start = ZOOM_options_get_int(r->options, "start", 0);
 774     count = ZOOM_options_get_int(r->options, "count", 0);
 775     {
 776         /* If "presentChunk" is defined use that; otherwise "step" */
 777         const char *cp = ZOOM_options_get(r->options, "presentChunk");
 778         r->step = ZOOM_options_get_int(r->options,
 779                                        (cp != 0 ? "presentChunk": "step"), 0);
 780     }
 781     r->piggyback = ZOOM_options_get_bool(r->options, "piggyback", 1);
 782     cp = ZOOM_options_get(r->options, "setname");
 783     if (cp)
 784         r->setname = xstrdup(cp);
 785     cp = ZOOM_options_get(r->options, "schema");
 786     if (cp)
 787         r->schema = xstrdup(cp);
 788
 789     r->databaseNames = set_DatabaseNames(c, c->options, &r->num_databaseNames,
 790                                          r->odr);
 791
 792     r->connection = c;
 793
 794     r->next = c->resultsets;
 795     c->resultsets = r;
 796
 797     if (c->host_port && c->proto == PROTO_HTTP)
 798     {
 799         if (!c->cs)
 800         {
 801             yaz_log(log_details, "ZOOM_connection_search: no comstack");
 802             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 803         }
 804         else
 805         {
 806             yaz_log(log_details, "ZOOM_connection_search: reconnect");
 807             c->reconnect_ok = 1;
 808         }
 809     }
 810
 811     task = ZOOM_connection_add_task(c, ZOOM_TASK_SEARCH);
 812     task->u.search.resultset = r;
 813     task->u.search.start = start;
 814     task->u.search.count = count;
 815
 816     syntax = ZOOM_options_get(r->options, "preferredRecordSyntax");
 817     task->u.search.syntax = syntax ? xstrdup(syntax) : 0;
 818     elementSetName = ZOOM_options_get(r->options, "elementSetName");
 819     task->u.search.elementSetName = elementSetName
 820         ? xstrdup(elementSetName) : 0;
 821
 822     ZOOM_resultset_addref(r);
 823
 824     (q->refcount)++;
 825
 826     if (!c->async)
 827     {
 828         while (ZOOM_event(1, &c))
 829             ;
 830     }
 831     return r;
 832 }
 833
 834 /*
 835  * This is the old result-set sorting API, which is maintained only
 836  * for the sake of binary compatibility.  There is no reason ever to
 837  * use this rather than ZOOM_resultset_sort1().
 838  */
 839 ZOOM_API(void)
 840     ZOOM_resultset_sort(ZOOM_resultset r,
 841                         const char *sort_type, const char *sort_spec)
 842 {
 843     (void) ZOOM_resultset_sort1(r, sort_type, sort_spec);
 844 }
 845
 846 ZOOM_API(int)
 847     ZOOM_resultset_sort1(ZOOM_resultset r,
 848                          const char *sort_type, const char *sort_spec)
 849 {
 850     ZOOM_connection c = r->connection;
 851     ZOOM_task task;
 852     ZOOM_query newq;
 853
 854     newq = ZOOM_query_create();
 855     if (ZOOM_query_sortby(newq, sort_spec) < 0)
 856         return -1;
 857
 858     yaz_log(log_api, "%p ZOOM_resultset_sort r=%p sort_type=%s sort_spec=%s",
 859             r, r, sort_type, sort_spec);
 860     if (!c)
 861         return 0;
 862
 863     if (c->host_port && c->proto == PROTO_HTTP)
 864     {
 865         if (!c->cs)
 866         {
 867             yaz_log(log_details, "%p ZOOM_resultset_sort: no comstack", r);
 868             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 869         }
 870         else
 871         {
 872             yaz_log(log_details, "%p ZOOM_resultset_sort: prepare reconnect",
 873                     r);
 874             c->reconnect_ok = 1;
 875         }
 876     }
 877
 878     ZOOM_resultset_cache_reset(r);
 879     task = ZOOM_connection_add_task(c, ZOOM_TASK_SORT);
 880     task->u.sort.resultset = r;
 881     task->u.sort.q = newq;
 882
 883     ZOOM_resultset_addref(r);
 884
 885     if (!c->async)
 886     {
 887         while (ZOOM_event(1, &c))
 888             ;
 889     }
 890
 891     return 0;
 892 }
 893
 894 ZOOM_API(void)
 895     ZOOM_resultset_cache_reset(ZOOM_resultset r)
 896 {
 897     int i;
 898     for (i = 0; i<RECORD_HASH_SIZE; i++)
 899     {
 900         ZOOM_record_cache rc;
 901         for (rc = r->record_hash[i]; rc; rc = rc->next)
 902         {
 903             if (rc->rec.wrbuf_marc)
 904                 wrbuf_free(rc->rec.wrbuf_marc, 1);
 905             if (rc->rec.wrbuf_iconv)
 906                 wrbuf_free(rc->rec.wrbuf_iconv, 1);
 907             if (rc->rec.wrbuf_opac)
 908                 wrbuf_free(rc->rec.wrbuf_opac, 1);
 909         }
 910         r->record_hash[i] = 0;
 911     }
 912 }
 913
 914 ZOOM_API(void)
 915     ZOOM_resultset_destroy(ZOOM_resultset r)
 916 {
 917     if (!r)
 918         return;
 919     (r->refcount)--;
 920     yaz_log(log_details, "%p ZOOM_resultset_destroy r=%p count=%d",
 921             r, r, r->refcount);
 922     if (r->refcount == 0)
 923     {
 924         ZOOM_resultset_cache_reset(r);
 925
 926         if (r->connection)
 927         {
 928             /* remove ourselves from the resultsets in connection */
 929             ZOOM_resultset *rp = &r->connection->resultsets;
 930             while (1)
 931             {
 932                 assert(*rp);   /* we must be in this list!! */
 933                 if (*rp == r)
 934                 {   /* OK, we're here - take us out of it */
 935                     *rp = (*rp)->next;
 936                     break;
 937                 }
 938                 rp = &(*rp)->next;
 939             }
 940         }
 941         ZOOM_query_destroy(r->query);
 942         ZOOM_options_destroy(r->options);
 943         odr_destroy(r->odr);
 944         xfree(r->setname);
 945         xfree(r->schema);
 946         xfree(r);
 947     }
 948 }
 949
 950 ZOOM_API(size_t)
 951     ZOOM_resultset_size(ZOOM_resultset r)
 952 {
 953     return r->size;
 954 }
 955
 956 static void do_close(ZOOM_connection c)
 957 {
 958     if (c->cs)
 959         cs_close(c->cs);
 960     c->cs = 0;
 961     c->mask = 0;
 962     c->state = STATE_IDLE;
 963 }
 964
 965 static int ZOOM_test_reconnect(ZOOM_connection c)
 966 {
 967     if (!c->reconnect_ok)
 968         return 0;
 969     do_close(c);
 970     c->reconnect_ok = 0;
 971     c->tasks->running = 0;
 972     ZOOM_connection_insert_task(c, ZOOM_TASK_CONNECT);
 973     return 1;
 974 }
 975
 976 static void ZOOM_resultset_retrieve(ZOOM_resultset r,
 977                                     int force_sync, int start, int count)
 978 {
 979     ZOOM_task task;
 980     ZOOM_connection c;
 981     const char *cp;
 982     const char *syntax, *elementSetName;
 983
 984     if (!r)
 985         return;
 986     yaz_log(log_details, "%p ZOOM_resultset_retrieve force_sync=%d start=%d"
 987             " count=%d", r, force_sync, start, count);
 988     c = r->connection;
 989     if (!c)
 990         return;
 991
 992     if (c->host_port && c->proto == PROTO_HTTP)
 993     {
 994         if (!c->cs)
 995         {
 996             yaz_log(log_details, "%p ZOOM_resultset_retrieve: no comstack", r);
 997             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 998         }
 999         else
1000         {
1001             yaz_log(log_details, "%p ZOOM_resultset_retrieve: prepare "
1002                     "reconnect", r);
1003             c->reconnect_ok = 1;
1004         }
1005     }
1006     task = ZOOM_connection_add_task(c, ZOOM_TASK_RETRIEVE);
1007     task->u.retrieve.resultset = r;
1008     task->u.retrieve.start = start;
1009     task->u.retrieve.count = count;
1010
1011     syntax = ZOOM_options_get(r->options, "preferredRecordSyntax");
1012     task->u.retrieve.syntax = syntax ? xstrdup(syntax) : 0;
1013     elementSetName = ZOOM_options_get(r->options, "elementSetName");
1014     task->u.retrieve.elementSetName = elementSetName
1015         ? xstrdup(elementSetName) : 0;
1016
1017     cp = ZOOM_options_get(r->options, "schema");
1018     if (cp)
1019     {
1020         if (!r->schema || strcmp(r->schema, cp))
1021         {
1022             xfree(r->schema);
1023             r->schema = xstrdup(cp);
1024         }
1025     }
1026
1027     ZOOM_resultset_addref(r);
1028
1029     if (!r->connection->async || force_sync)
1030         while (r->connection && ZOOM_event(1, &r->connection))
1031             ;
1032 }
1033
1034 ZOOM_API(void)
1035     ZOOM_resultset_records(ZOOM_resultset r, ZOOM_record *recs,
1036                            size_t start, size_t count)
1037 {
1038     int force_present = 0;
1039
1040     if (!r)
1041         return ;
1042     yaz_log(log_api, "%p ZOOM_resultset_records r=%p start=%ld count=%ld",
1043             r, r, (long) start, (long) count);
1044     if (count && recs)
1045         force_present = 1;
1046     ZOOM_resultset_retrieve(r, force_present, start, count);
1047     if (force_present)
1048     {
1049         size_t i;
1050         for (i = 0; i< count; i++)
1051             recs[i] = ZOOM_resultset_record_immediate(r, i+start);
1052     }
1053 }
1054
1055 static void get_cert(ZOOM_connection c)
1056 {
1057     char *cert_buf;
1058     int cert_len;
1059
1060     if (cs_get_peer_certificate_x509(c->cs, &cert_buf, &cert_len))
1061     {
1062         ZOOM_connection_option_setl(c, "sslPeerCert",
1063                                     cert_buf, cert_len);
1064         xfree(cert_buf);
1065     }
1066 }
1067
1068 static zoom_ret do_connect(ZOOM_connection c)
1069 {
1070     void *add;
1071     const char *effective_host;
1072
1073     if (c->proxy)
1074         effective_host = c->proxy;
1075     else
1076         effective_host = c->host_port;
1077
1078     yaz_log(log_details, "%p do_connect effective_host=%s", c, effective_host);
1079
1080     if (c->cs)
1081         cs_close(c->cs);
1082     c->cs = cs_create_host(effective_host, 0, &add);
1083
1084     if (c->cs && c->cs->protocol == PROTO_HTTP)
1085     {
1086 #if YAZ_HAVE_XML2
1087         const char *path = 0;
1088
1089         c->proto = PROTO_HTTP;
1090         cs_get_host_args(c->host_port, &path);
1091         xfree(c->path);
1092         c->path = (char*) xmalloc(strlen(path)+2);
1093         c->path[0] = '/';
1094         strcpy(c->path+1, path);
1095 #else
1096         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_PROTOCOL, "SRW");
1097         do_close(c);
1098         return zoom_complete;
1099 #endif
1100     }
1101     if (c->cs)
1102     {
1103         int ret = cs_connect(c->cs, add);
1104         if (ret == 0)
1105         {
1106             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
1107             ZOOM_connection_put_event(c, event);
1108             get_cert(c);
1109             if (c->proto == PROTO_Z3950)
1110                 ZOOM_connection_send_init(c);
1111             else
1112             {
1113                 /* no init request for SRW .. */
1114                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
1115                 ZOOM_connection_remove_task(c);
1116                 c->mask = 0;
1117                 ZOOM_connection_exec_task(c);
1118             }
1119             c->state = STATE_ESTABLISHED;
1120             return zoom_pending;
1121         }
1122         else if (ret > 0)
1123         {
1124             c->state = STATE_CONNECTING;
1125             c->mask = ZOOM_SELECT_EXCEPT;
1126             if (c->cs->io_pending & CS_WANT_WRITE)
1127                 c->mask += ZOOM_SELECT_WRITE;
1128             if (c->cs->io_pending & CS_WANT_READ)
1129                 c->mask += ZOOM_SELECT_READ;
1130             return zoom_pending;
1131         }
1132     }
1133     c->state = STATE_IDLE;
1134     set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
1135     return zoom_complete;
1136 }
1137
1138 int z3950_connection_socket(ZOOM_connection c)
1139 {
1140     if (c->cs)
1141         return cs_fileno(c->cs);
1142     return -1;
1143 }
1144
1145 int z3950_connection_mask(ZOOM_connection c)
1146 {
1147     if (c->cs)
1148         return c->mask;
1149     return 0;
1150 }
1151
1152 static void otherInfo_attach(ZOOM_connection c, Z_APDU *a, ODR out)
1153 {
1154     int i;
1155     for (i = 0; i<200; i++)
1156     {
1157         size_t len;
1158         Z_OtherInformation **oi;
1159         char buf[80];
1160         const char *val;
1161         const char *cp;
1162         int oidval;
1163
1164         sprintf(buf, "otherInfo%d", i);
1165         val = ZOOM_options_get(c->options, buf);
1166         if (!val)
1167             break;
1168         cp = strchr(val, ':');
1169         if (!cp)
1170             continue;
1171         len = cp - val;
1172         if (len >= sizeof(buf))
1173             len = sizeof(buf)-1;
1174         memcpy(buf, val, len);
1175         buf[len] = '\0';
1176         oidval = oid_getvalbyname(buf);
1177         if (oidval == VAL_NONE)
1178             continue;
1179
1180         yaz_oi_APDU(a, &oi);
1181         yaz_oi_set_string_oidval(oi, out, oidval, 1, cp+1);
1182     }
1183 }
1184
1185 static int encode_APDU(ZOOM_connection c, Z_APDU *a, ODR out)
1186 {
1187     assert(a);
1188     if (c->cookie_out)
1189     {
1190         Z_OtherInformation **oi;
1191         yaz_oi_APDU(a, &oi);
1192         yaz_oi_set_string_oidval(oi, out, VAL_COOKIE, 1, c->cookie_out);
1193     }
1194     if (c->client_IP)
1195     {
1196         Z_OtherInformation **oi;
1197         yaz_oi_APDU(a, &oi);
1198         yaz_oi_set_string_oidval(oi, out, VAL_CLIENT_IP, 1, c->client_IP);
1199     }
1200     otherInfo_attach(c, a, out);
1201     if (!z_APDU(out, &a, 0, 0))
1202     {
1203         FILE *outf = fopen("/tmp/apdu.txt", "a");
1204         if (a && outf)
1205         {
1206             ODR odr_pr = odr_createmem(ODR_PRINT);
1207             fprintf(outf, "a=%p\n", a);
1208             odr_setprint(odr_pr, outf);
1209             z_APDU(odr_pr, &a, 0, 0);
1210             odr_destroy(odr_pr);
1211         }
1212         yaz_log(log_api, "%p encoding_APDU: encoding failed", c);
1213         set_ZOOM_error(c, ZOOM_ERROR_ENCODE, 0);
1214         odr_reset(out);
1215         return -1;
1216     }
1217     yaz_log(log_details, "%p encoding_APDU encoding OK", c);
1218     return 0;
1219 }
1220
1221 static zoom_ret send_APDU(ZOOM_connection c, Z_APDU *a)
1222 {
1223     ZOOM_Event event;
1224     assert(a);
1225     if (encode_APDU(c, a, c->odr_out))
1226         return zoom_complete;
1227     yaz_log(log_details, "%p send APDU type=%d", c, a->which);
1228     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1229     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
1230     ZOOM_connection_put_event(c, event);
1231     odr_reset(c->odr_out);
1232     return do_write(c);
1233 }
1234
1235 /* returns 1 if PDU was sent OK (still pending )
1236    0 if PDU was not sent OK (nothing to wait for)
1237 */
1238
1239 static zoom_ret ZOOM_connection_send_init(ZOOM_connection c)
1240 {
1241     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_initRequest);
1242     Z_InitRequest *ireq = apdu->u.initRequest;
1243     Z_IdAuthentication *auth = (Z_IdAuthentication *)
1244         odr_malloc(c->odr_out, sizeof(*auth));
1245     const char *auth_groupId = ZOOM_options_get(c->options, "group");
1246     const char *auth_userId = ZOOM_options_get(c->options, "user");
1247     const char *auth_password = ZOOM_options_get(c->options, "password");
1248     char *version;
1249
1250     /* support the pass for backwards compatibility */
1251     if (!auth_password)
1252         auth_password = ZOOM_options_get(c->options, "pass");
1253
1254     ODR_MASK_SET(ireq->options, Z_Options_search);
1255     ODR_MASK_SET(ireq->options, Z_Options_present);
1256     ODR_MASK_SET(ireq->options, Z_Options_scan);
1257     ODR_MASK_SET(ireq->options, Z_Options_sort);
1258     ODR_MASK_SET(ireq->options, Z_Options_extendedServices);
1259     ODR_MASK_SET(ireq->options, Z_Options_namedResultSets);
1260
1261     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_1);
1262     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_2);
1263     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_3);
1264
1265     /* Index Data's Z39.50 Implementor Id is 81 */
1266     ireq->implementationId =
1267         odr_prepend(c->odr_out,
1268                     ZOOM_options_get(c->options, "implementationId"),
1269                     odr_prepend(c->odr_out, "81", ireq->implementationId));
1270
1271     ireq->implementationName =
1272         odr_prepend(c->odr_out,
1273                     ZOOM_options_get(c->options, "implementationName"),
1274                     odr_prepend(c->odr_out, "ZOOM-C",
1275                                 ireq->implementationName));
1276
1277     version = odr_strdup(c->odr_out, "$Revision: 1.95 $");
1278     if (strlen(version) > 10)   /* check for unexpanded CVS strings */
1279         version[strlen(version)-2] = '\0';
1280     ireq->implementationVersion =
1281         odr_prepend(c->odr_out,
1282                     ZOOM_options_get(c->options, "implementationVersion"),
1283                     odr_prepend(c->odr_out, &version[11],
1284                                 ireq->implementationVersion));
1285
1286     *ireq->maximumRecordSize =
1287         ZOOM_options_get_int(c->options, "maximumRecordSize", 1024*1024);
1288     *ireq->preferredMessageSize =
1289         ZOOM_options_get_int(c->options, "preferredMessageSize", 1024*1024);
1290
1291     if (auth_groupId || auth_password)
1292     {
1293         Z_IdPass *pass = (Z_IdPass *) odr_malloc(c->odr_out, sizeof(*pass));
1294         int i = 0;
1295         pass->groupId = 0;
1296         if (auth_groupId && *auth_groupId)
1297         {
1298             pass->groupId = (char *)
1299                 odr_malloc(c->odr_out, strlen(auth_groupId)+1);
1300             strcpy(pass->groupId, auth_groupId);
1301             i++;
1302         }
1303         pass->userId = 0;
1304         if (auth_userId && *auth_userId)
1305         {
1306             pass->userId = (char *)
1307                 odr_malloc(c->odr_out, strlen(auth_userId)+1);
1308             strcpy(pass->userId, auth_userId);
1309             i++;
1310         }
1311         pass->password = 0;
1312         if (auth_password && *auth_password)
1313         {
1314             pass->password = (char *)
1315                 odr_malloc(c->odr_out, strlen(auth_password)+1);
1316             strcpy(pass->password, auth_password);
1317             i++;
1318         }
1319         if (i)
1320         {
1321             auth->which = Z_IdAuthentication_idPass;
1322             auth->u.idPass = pass;
1323             ireq->idAuthentication = auth;
1324         }
1325     }
1326     else if (auth_userId)
1327     {
1328         auth->which = Z_IdAuthentication_open;
1329         auth->u.open = (char *)
1330             odr_malloc(c->odr_out, strlen(auth_userId)+1);
1331         strcpy(auth->u.open, auth_userId);
1332         ireq->idAuthentication = auth;
1333     }
1334     if (c->proxy)
1335         yaz_oi_set_string_oidval(&ireq->otherInfo, c->odr_out,
1336                                  VAL_PROXY, 1, c->host_port);
1337     if (c->charset || c->lang)
1338     {
1339         Z_OtherInformation **oi;
1340         Z_OtherInformationUnit *oi_unit;
1341
1342         yaz_oi_APDU(apdu, &oi);
1343
1344         if ((oi_unit = yaz_oi_update(oi, c->odr_out, NULL, 0, 0)))
1345         {
1346             ODR_MASK_SET(ireq->options, Z_Options_negotiationModel);
1347             oi_unit->which = Z_OtherInfo_externallyDefinedInfo;
1348             oi_unit->information.externallyDefinedInfo =
1349                 yaz_set_proposal_charneg_list(c->odr_out, " ",
1350                                               c->charset, c->lang, 1);
1351         }
1352     }
1353     assert(apdu);
1354     return send_APDU(c, apdu);
1355 }
1356
1357 #if YAZ_HAVE_XML2
1358 static zoom_ret send_srw(ZOOM_connection c, Z_SRW_PDU *sr)
1359 {
1360     Z_GDU *gdu;
1361     ZOOM_Event event;
1362
1363     gdu = z_get_HTTP_Request_host_path(c->odr_out, c->host_port, c->path);
1364
1365     if (c->sru_mode == zoom_sru_get)
1366     {
1367         yaz_sru_get_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1368     }
1369     else if (c->sru_mode == zoom_sru_post)
1370     {
1371         yaz_sru_post_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1372     }
1373     else if (c->sru_mode == zoom_sru_soap)
1374     {
1375         yaz_sru_soap_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
1376     }
1377     if (!z_GDU(c->odr_out, &gdu, 0, 0))
1378         return zoom_complete;
1379     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1380
1381     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
1382     ZOOM_connection_put_event(c, event);
1383     odr_reset(c->odr_out);
1384     return do_write(c);
1385 }
1386 #endif
1387
1388 #if YAZ_HAVE_XML2
1389 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1390 {
1391     int i;
1392     int *start, *count;
1393     ZOOM_resultset resultset = 0;
1394     Z_SRW_PDU *sr = 0;
1395     const char *option_val = 0;
1396
1397     if (c->error)                  /* don't continue on error */
1398         return zoom_complete;
1399     assert(c->tasks);
1400     switch(c->tasks->which)
1401     {
1402     case ZOOM_TASK_SEARCH:
1403         resultset = c->tasks->u.search.resultset;
1404         resultset->setname = xstrdup("default");
1405         ZOOM_options_set(resultset->options, "setname", resultset->setname);
1406         start = &c->tasks->u.search.start;
1407         count = &c->tasks->u.search.count;
1408         break;
1409     case ZOOM_TASK_RETRIEVE:
1410         resultset = c->tasks->u.retrieve.resultset;
1411
1412         start = &c->tasks->u.retrieve.start;
1413         count = &c->tasks->u.retrieve.count;
1414
1415         if (*start >= resultset->size)
1416             return zoom_complete;
1417         if (*start + *count > resultset->size)
1418             *count = resultset->size - *start;
1419
1420         for (i = 0; i < *count; i++)
1421         {
1422             ZOOM_record rec =
1423                 record_cache_lookup(resultset, i + *start,
1424                                     c->tasks->u.retrieve.syntax,
1425                                     c->tasks->u.retrieve.elementSetName);
1426             if (!rec)
1427                 break;
1428             else
1429             {
1430                 ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
1431                 ZOOM_connection_put_event(c, event);
1432             }
1433         }
1434         *start += i;
1435         *count -= i;
1436
1437         if (*count == 0)
1438             return zoom_complete;
1439         break;
1440     default:
1441         return zoom_complete;
1442     }
1443     assert(resultset->query);
1444
1445     sr = yaz_srw_get(c->odr_out, Z_SRW_searchRetrieve_request);
1446
1447     if (resultset->query->z_query->which == Z_Query_type_104
1448         && resultset->query->z_query->u.type_104->which == Z_External_CQL)
1449     {
1450         sr->u.request->query_type = Z_SRW_query_type_cql;
1451         sr->u.request->query.cql =resultset->query->z_query->u.type_104->u.cql;
1452     }
1453     else if (resultset->query->z_query->which == Z_Query_type_1 &&
1454              resultset->query->z_query->u.type_1)
1455     {
1456         sr->u.request->query_type = Z_SRW_query_type_pqf;
1457         sr->u.request->query.pqf = resultset->query->query_string;
1458     }
1459     else
1460     {
1461         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
1462         return zoom_complete;
1463     }
1464     sr->u.request->startRecord = odr_intdup(c->odr_out, *start + 1);
1465     sr->u.request->maximumRecords = odr_intdup(
1466         c->odr_out, resultset->step>0 ? resultset->step : *count);
1467     sr->u.request->recordSchema = resultset->schema;
1468
1469     option_val = ZOOM_resultset_option_get(resultset, "recordPacking");
1470     if (option_val)
1471         sr->u.request->recordPacking = odr_strdup(c->odr_out, option_val);
1472
1473     option_val = ZOOM_resultset_option_get(resultset, "extraArgs");
1474     if (option_val)
1475         sr->extra_args = odr_strdup(c->odr_out, option_val);
1476     return send_srw(c, sr);
1477 }
1478 #else
1479 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1480 {
1481     return zoom_complete;
1482 }
1483 #endif
1484
1485 static zoom_ret ZOOM_connection_send_search(ZOOM_connection c)
1486 {
1487     ZOOM_resultset r;
1488     int lslb, ssub, mspn;
1489     const char *syntax;
1490     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_searchRequest);
1491     Z_SearchRequest *search_req = apdu->u.searchRequest;
1492     const char *elementSetName;
1493     const char *smallSetElementSetName;
1494     const char *mediumSetElementSetName;
1495
1496     assert(c->tasks);
1497     assert(c->tasks->which == ZOOM_TASK_SEARCH);
1498
1499     r = c->tasks->u.search.resultset;
1500
1501     yaz_log(log_details, "%p ZOOM_connection_send_search set=%p", c, r);
1502
1503     elementSetName =
1504         ZOOM_options_get(r->options, "elementSetName");
1505     smallSetElementSetName  =
1506         ZOOM_options_get(r->options, "smallSetElementSetName");
1507     mediumSetElementSetName =
1508         ZOOM_options_get(r->options, "mediumSetElementSetName");
1509
1510     if (!smallSetElementSetName)
1511         smallSetElementSetName = elementSetName;
1512
1513     if (!mediumSetElementSetName)
1514         mediumSetElementSetName = elementSetName;
1515
1516     assert(r);
1517     assert(r->query);
1518
1519     /* prepare query for the search request */
1520     search_req->query = r->query->z_query;
1521     if (!search_req->query)
1522     {
1523         set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
1524         return zoom_complete;
1525     }
1526
1527     search_req->databaseNames = r->databaseNames;
1528     search_req->num_databaseNames = r->num_databaseNames;
1529
1530     /* get syntax (no need to provide unless piggyback is in effect) */
1531     syntax = c->tasks->u.search.syntax;
1532
1533     lslb = ZOOM_options_get_int(r->options, "largeSetLowerBound", -1);
1534     ssub = ZOOM_options_get_int(r->options, "smallSetUpperBound", -1);
1535     mspn = ZOOM_options_get_int(r->options, "mediumSetPresentNumber", -1);
1536     if (lslb != -1 && ssub != -1 && mspn != -1)
1537     {
1538         /* So're a Z39.50 expert? Let's hope you don't do sort */
1539         *search_req->largeSetLowerBound = lslb;
1540         *search_req->smallSetUpperBound = ssub;
1541         *search_req->mediumSetPresentNumber = mspn;
1542     }
1543     else if (c->tasks->u.search.start == 0 && c->tasks->u.search.count > 0
1544              && r->piggyback && !r->r_sort_spec && !r->schema)
1545     {
1546         /* Regular piggyback - do it unless we're going to do sort */
1547         *search_req->largeSetLowerBound = 2000000000;
1548         *search_req->smallSetUpperBound = 1;
1549         *search_req->mediumSetPresentNumber =
1550             r->step>0 ? r->step : c->tasks->u.search.count;
1551     }
1552     else
1553     {
1554         /* non-piggyback. Need not provide elementsets or syntaxes .. */
1555         smallSetElementSetName = 0;
1556         mediumSetElementSetName = 0;
1557         syntax = 0;
1558     }
1559     if (smallSetElementSetName && *smallSetElementSetName)
1560     {
1561         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1562             odr_malloc(c->odr_out, sizeof(*esn));
1563
1564         esn->which = Z_ElementSetNames_generic;
1565         esn->u.generic = odr_strdup(c->odr_out, smallSetElementSetName);
1566         search_req->smallSetElementSetNames = esn;
1567     }
1568     if (mediumSetElementSetName && *mediumSetElementSetName)
1569     {
1570         Z_ElementSetNames *esn =(Z_ElementSetNames *)
1571             odr_malloc(c->odr_out, sizeof(*esn));
1572
1573         esn->which = Z_ElementSetNames_generic;
1574         esn->u.generic = odr_strdup(c->odr_out, mediumSetElementSetName);
1575         search_req->mediumSetElementSetNames = esn;
1576     }
1577     if (syntax)
1578         search_req->preferredRecordSyntax =
1579             yaz_str_to_z3950oid(c->odr_out, CLASS_RECSYN, syntax);
1580
1581     if (!r->setname)
1582     {
1583         if (c->support_named_resultsets)
1584         {
1585             char setname[14];
1586             int ord;
1587             /* find the lowest unused ordinal so that we re-use
1588                result sets on the server. */
1589             for (ord = 1; ; ord++)
1590             {
1591                 ZOOM_resultset rp;
1592                 sprintf(setname, "%d", ord);
1593                 for (rp = c->resultsets; rp; rp = rp->next)
1594                     if (rp->setname && !strcmp(rp->setname, setname))
1595                         break;
1596                 if (!rp)
1597                     break;
1598             }
1599             r->setname = xstrdup(setname);
1600             yaz_log(log_details, "%p ZOOM_connection_send_search: allocating "
1601                     "set %s", c, r->setname);
1602         }
1603         else
1604         {
1605             yaz_log(log_details, "%p ZOOM_connection_send_search: using "
1606                     "default set", c);
1607             r->setname = xstrdup("default");
1608         }
1609         ZOOM_options_set(r->options, "setname", r->setname);
1610     }
1611     search_req->resultSetName = odr_strdup(c->odr_out, r->setname);
1612     return send_APDU(c, apdu);
1613 }
1614
1615 static void response_default_diag(ZOOM_connection c, Z_DefaultDiagFormat *r)
1616 {
1617     int oclass;
1618     char *addinfo = 0;
1619
1620     switch (r->which)
1621     {
1622     case Z_DefaultDiagFormat_v2Addinfo:
1623         addinfo = r->u.v2Addinfo;
1624         break;
1625     case Z_DefaultDiagFormat_v3Addinfo:
1626         addinfo = r->u.v3Addinfo;
1627         break;
1628     }
1629     xfree(c->addinfo);
1630     c->addinfo = 0;
1631     set_dset_error(c, *r->condition,
1632                    yaz_z3950oid_to_str(r->diagnosticSetId, &oclass),
1633                    addinfo, 0);
1634 }
1635
1636 static void response_diag(ZOOM_connection c, Z_DiagRec *p)
1637 {
1638     if (p->which != Z_DiagRec_defaultFormat)
1639         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1640     else
1641         response_default_diag(c, p->u.defaultFormat);
1642 }
1643
1644 ZOOM_API(ZOOM_record)
1645     ZOOM_record_clone(ZOOM_record srec)
1646 {
1647     char *buf;
1648     int size;
1649     ODR odr_enc;
1650     ZOOM_record nrec;
1651
1652     odr_enc = odr_createmem(ODR_ENCODE);
1653     if (!z_NamePlusRecord(odr_enc, &srec->npr, 0, 0))
1654         return 0;
1655     buf = odr_getbuf(odr_enc, &size, 0);
1656
1657     nrec = (ZOOM_record) xmalloc(sizeof(*nrec));
1658     nrec->odr = odr_createmem(ODR_DECODE);
1659     nrec->wrbuf_marc = 0;
1660     nrec->wrbuf_iconv = 0;
1661     nrec->wrbuf_opac = 0;
1662     odr_setbuf(nrec->odr, buf, size, 0);
1663     z_NamePlusRecord(nrec->odr, &nrec->npr, 0, 0);
1664
1665     odr_destroy(odr_enc);
1666     return nrec;
1667 }
1668
1669 ZOOM_API(ZOOM_record)
1670     ZOOM_resultset_record_immediate(ZOOM_resultset s,size_t pos)
1671 {
1672     const char *syntax =
1673         ZOOM_options_get(s->options, "preferredRecordSyntax");
1674     const char *elementSetName =
1675         ZOOM_options_get(s->options, "elementSetName");
1676
1677     return record_cache_lookup(s, pos, syntax, elementSetName);
1678 }
1679
1680 ZOOM_API(ZOOM_record)
1681     ZOOM_resultset_record(ZOOM_resultset r, size_t pos)
1682 {
1683     ZOOM_record rec = ZOOM_resultset_record_immediate(r, pos);
1684
1685     if (!rec)
1686     {
1687         /*
1688          * MIKE: I think force_sync should always be zero, but I don't
1689          * want to make this change until I get the go-ahead from
1690          * Adam, in case something depends on the old synchronous
1691          * behaviour.
1692          */
1693         int force_sync = 1;
1694         if (getenv("ZOOM_RECORD_NO_FORCE_SYNC")) force_sync = 0;
1695         ZOOM_resultset_retrieve(r, force_sync, pos, 1);
1696         rec = ZOOM_resultset_record_immediate(r, pos);
1697     }
1698     return rec;
1699 }
1700
1701 ZOOM_API(void)
1702     ZOOM_record_destroy(ZOOM_record rec)
1703 {
1704     if (!rec)
1705         return;
1706     if (rec->wrbuf_marc)
1707         wrbuf_free(rec->wrbuf_marc, 1);
1708     if (rec->wrbuf_iconv)
1709         wrbuf_free(rec->wrbuf_iconv, 1);
1710     if (rec->wrbuf_opac)
1711         wrbuf_free(rec->wrbuf_opac, 1);
1712     odr_destroy(rec->odr);
1713     xfree(rec);
1714 }
1715
1716 static const char *marc_iconv_return(ZOOM_record rec, int marc_type,
1717                                      int *len,
1718                                      const char *buf, int sz,
1719                                      const char *record_charset)
1720 {
1721     char to[40];
1722     char from[40];
1723     yaz_iconv_t cd = 0;
1724     yaz_marc_t mt = yaz_marc_create();
1725
1726     *from = '\0';
1727     strcpy(to, "UTF-8");
1728     if (record_charset && *record_charset)
1729     {
1730         /* Use "from,to" or just "from" */
1731         const char *cp = strchr(record_charset, ',');
1732         int clen = strlen(record_charset);
1733         if (cp && cp[1])
1734         {
1735             strncpy( to, cp+1, sizeof(to)-1);
1736             to[sizeof(to)-1] = '\0';
1737             clen = cp - record_charset;
1738         }
1739         if (clen > sizeof(from)-1)
1740             clen = sizeof(from)-1;
1741
1742         if (clen)
1743             strncpy(from, record_charset, clen);
1744         from[clen] = '\0';
1745     }
1746
1747     if (*from && *to)
1748     {
1749         cd = yaz_iconv_open(to, from);
1750         yaz_marc_iconv(mt, cd);
1751     }
1752
1753     yaz_marc_xml(mt, marc_type);
1754     if (!rec->wrbuf_marc)
1755         rec->wrbuf_marc = wrbuf_alloc();
1756     wrbuf_rewind(rec->wrbuf_marc);
1757     if (yaz_marc_decode_wrbuf(mt, buf, sz, rec->wrbuf_marc) > 0)
1758     {
1759         yaz_marc_destroy(mt);
1760         if (cd)
1761             yaz_iconv_close(cd);
1762         if (len)
1763             *len = wrbuf_len(rec->wrbuf_marc);
1764         return wrbuf_buf(rec->wrbuf_marc);
1765     }
1766     yaz_marc_destroy(mt);
1767     if (cd)
1768         yaz_iconv_close(cd);
1769     return 0;
1770 }
1771
1772 static const char *record_iconv_return(ZOOM_record rec, int *len,
1773                                        const char *buf, int sz,
1774                                        const char *record_charset)
1775 {
1776     char to[40];
1777     char from[40];
1778     yaz_iconv_t cd = 0;
1779
1780     *from = '\0';
1781     strcpy(to, "UTF-8");
1782     if (record_charset && *record_charset)
1783     {
1784         /* Use "from,to" or just "from" */
1785         const char *cp = strchr(record_charset, ',');
1786         int clen = strlen(record_charset);
1787         if (cp && cp[1])
1788         {
1789             strncpy( to, cp+1, sizeof(to)-1);
1790             to[sizeof(to)-1] = '\0';
1791             clen = cp - record_charset;
1792         }
1793         if (clen > sizeof(from)-1)
1794             clen = sizeof(from)-1;
1795
1796         if (clen)
1797             strncpy(from, record_charset, clen);
1798         from[clen] = '\0';
1799     }
1800
1801     if (*from && *to && (cd = yaz_iconv_open(to, from)))
1802     {
1803         char outbuf[12];
1804         size_t inbytesleft = sz;
1805         const char *inp = buf;
1806
1807         if (!rec->wrbuf_iconv)
1808             rec->wrbuf_iconv = wrbuf_alloc();
1809
1810         wrbuf_rewind(rec->wrbuf_iconv);
1811
1812         while (inbytesleft)
1813         {
1814             size_t outbytesleft = sizeof(outbuf);
1815             char *outp = outbuf;
1816             size_t r = yaz_iconv(cd, (char**) &inp,
1817                                  &inbytesleft,
1818                                  &outp, &outbytesleft);
1819             if (r == (size_t) (-1))
1820             {
1821                 int e = yaz_iconv_error(cd);
1822                 if (e != YAZ_ICONV_E2BIG)
1823                     break;
1824             }
1825             wrbuf_write(rec->wrbuf_iconv, outbuf, outp - outbuf);
1826         }
1827         wrbuf_puts(rec->wrbuf_iconv, "");
1828         buf = wrbuf_buf(rec->wrbuf_iconv);
1829         sz = wrbuf_len(rec->wrbuf_iconv);
1830         yaz_iconv_close(cd);
1831     }
1832     if (len)
1833         *len = sz;
1834     return buf;
1835 }
1836
1837 ZOOM_API(int)
1838     ZOOM_record_error(ZOOM_record rec, const char **cp,
1839                       const char **addinfo, const char **diagset)
1840 {
1841     Z_NamePlusRecord *npr;
1842
1843     if (!rec)
1844         return 0;
1845     npr = rec->npr;
1846     if (npr && npr->which == Z_NamePlusRecord_surrogateDiagnostic)
1847     {
1848         Z_DiagRec *diag_rec = npr->u.surrogateDiagnostic;
1849         int error = YAZ_BIB1_UNSPECIFIED_ERROR;
1850         const char *add = 0;
1851
1852         if (diag_rec->which == Z_DiagRec_defaultFormat)
1853         {
1854             Z_DefaultDiagFormat *ddf = diag_rec->u.defaultFormat;
1855             int oclass;
1856
1857             error = *ddf->condition;
1858             switch (ddf->which)
1859             {
1860             case Z_DefaultDiagFormat_v2Addinfo:
1861                 add = ddf->u.v2Addinfo;
1862                 break;
1863             case Z_DefaultDiagFormat_v3Addinfo:
1864                 add = ddf->u.v3Addinfo;
1865                 break;
1866             }
1867             if (diagset)
1868                 *diagset = yaz_z3950oid_to_str(ddf->diagnosticSetId, &oclass);
1869         }
1870         else
1871         {
1872             if (diagset)
1873                 *diagset = "Bib-1";
1874         }
1875         if (addinfo)
1876             *addinfo = add ? add : "";
1877         if (cp)
1878             *cp = diagbib1_str(error);
1879         return error;
1880     }
1881     return 0;
1882 }
1883
1884 ZOOM_API(const char *)
1885     ZOOM_record_get(ZOOM_record rec, const char *type_spec, int *len)
1886 {
1887     char type[40];
1888     char charset[40];
1889     char xpath[512];
1890     const char *cp;
1891     int i;
1892     Z_NamePlusRecord *npr;
1893
1894     if (len)
1895         *len = 0; /* default return */
1896
1897     if (!rec)
1898         return 0;
1899     npr = rec->npr;
1900     if (!npr)
1901         return 0;
1902
1903     cp = type_spec;
1904     for (i = 0; cp[i] && i < sizeof(type)-1; i++)
1905     {
1906         if (cp[i] == ';' || cp[i] == ' ')
1907             break;
1908         type[i] = cp[i];
1909     }
1910     type[i] = '\0';
1911     charset[0] = '\0';
1912     while (type_spec[i] == ';')
1913     {
1914         i++;
1915         while (type_spec[i] == ' ')
1916             i++;
1917         if (!strncmp(type_spec+i, "charset=", 8))
1918         {
1919             int j = 0;
1920             i = i + 8; /* skip charset= */
1921             for (j = 0; type_spec[i]  && j < sizeof(charset)-1; i++, j++)
1922             {
1923                 if (type_spec[i] == ';' || type_spec[i] == ' ')
1924                     break;
1925                 charset[j] = cp[i];
1926             }
1927             charset[j] = '\0';
1928         }
1929         else if (!strncmp(type_spec+i, "xpath=", 6))
1930         {
1931             int j = 0;
1932             i = i + 6;
1933             for (j = 0; type_spec[i] && j < sizeof(xpath)-1; i++, j++)
1934                 xpath[j] = cp[i];
1935             xpath[j] = '\0';
1936         }
1937         while (type_spec[i] == ' ')
1938             i++;
1939     }
1940     if (!strcmp(type, "database"))
1941     {
1942         if (len)
1943             *len = (npr->databaseName ? strlen(npr->databaseName) : 0);
1944         return npr->databaseName;
1945     }
1946     else if (!strcmp(type, "syntax"))
1947     {
1948         const char *desc = 0;
1949         if (npr->which == Z_NamePlusRecord_databaseRecord)
1950         {
1951             Z_External *r = (Z_External *) npr->u.databaseRecord;
1952             oident *ent = oid_getentbyoid(r->direct_reference);
1953             if (ent)
1954                 desc = ent->desc;
1955         }
1956         if (!desc)
1957             desc = "none";
1958         if (len)
1959             *len = strlen(desc);
1960         return desc;
1961     }
1962     if (npr->which != Z_NamePlusRecord_databaseRecord)
1963         return 0;
1964
1965     /* from now on - we have a database record .. */
1966     if (!strcmp(type, "render"))
1967     {
1968         Z_External *r = (Z_External *) npr->u.databaseRecord;
1969         oident *ent = oid_getentbyoid(r->direct_reference);
1970
1971         /* render bibliographic record .. */
1972         if (r->which == Z_External_OPAC)
1973         {
1974             r = r->u.opac->bibliographicRecord;
1975             if (!r)
1976                 return 0;
1977             ent = oid_getentbyoid(r->direct_reference);
1978         }
1979         if (r->which == Z_External_sutrs)
1980             return record_iconv_return(rec, len,
1981                                        (char*) r->u.sutrs->buf,
1982                                        r->u.sutrs->len,
1983                                        charset);
1984         else if (r->which == Z_External_octet)
1985         {
1986             const char *ret_buf;
1987             switch (ent->value)
1988             {
1989             case VAL_SOIF:
1990             case VAL_HTML:
1991             case VAL_SUTRS:
1992                 break;
1993             case VAL_TEXT_XML:
1994             case VAL_APPLICATION_XML:
1995                 break;
1996             default:
1997                 ret_buf = marc_iconv_return(
1998                     rec, YAZ_MARC_LINE, len,
1999                     (const char *) r->u.octet_aligned->buf,
2000                     r->u.octet_aligned->len,
2001                     charset);
2002                 if (ret_buf)
2003                     return ret_buf;
2004             }
2005             return record_iconv_return(rec, len,
2006                                        (const char *) r->u.octet_aligned->buf,
2007                                        r->u.octet_aligned->len,
2008                                        charset);
2009         }
2010         else if (r->which == Z_External_grs1)
2011         {
2012             if (!rec->wrbuf_marc)
2013                 rec->wrbuf_marc = wrbuf_alloc();
2014             wrbuf_rewind(rec->wrbuf_marc);
2015             yaz_display_grs1(rec->wrbuf_marc, r->u.grs1, 0);
2016             return record_iconv_return(rec, len,
2017                                        wrbuf_buf(rec->wrbuf_marc),
2018                                        wrbuf_len(rec->wrbuf_marc),
2019                                        charset);
2020         }
2021         return 0;
2022     }
2023     else if (!strcmp(type, "xml"))
2024     {
2025         Z_External *r = (Z_External *) npr->u.databaseRecord;
2026         oident *ent = oid_getentbyoid(r->direct_reference);
2027
2028         /* render bibliographic record .. */
2029         if (r->which == Z_External_OPAC)
2030         {
2031             r = r->u.opac->bibliographicRecord;
2032             if (!r)
2033                 return 0;
2034             ent = oid_getentbyoid(r->direct_reference);
2035         }
2036
2037         if (r->which == Z_External_sutrs)
2038             return record_iconv_return(rec, len,
2039                                        (const char *) r->u.sutrs->buf,
2040                                        r->u.sutrs->len,
2041                                        charset);
2042         else if (r->which == Z_External_octet)
2043         {
2044             const char *ret_buf;
2045             int marc_decode_type = YAZ_MARC_MARCXML;
2046
2047             switch (ent->value)
2048             {
2049             case VAL_SOIF:
2050             case VAL_HTML:
2051             case VAL_SUTRS:
2052                 break;
2053             case VAL_TEXT_XML:
2054             case VAL_APPLICATION_XML:
2055                 break;
2056             default:
2057                 ret_buf = marc_iconv_return(
2058                     rec, marc_decode_type, len,
2059                     (const char *) r->u.octet_aligned->buf,
2060                     r->u.octet_aligned->len,
2061                     charset);
2062                 if (ret_buf)
2063                     return ret_buf;
2064             }
2065             return record_iconv_return(rec, len,
2066                                        (const char *) r->u.octet_aligned->buf,
2067                                        r->u.octet_aligned->len,
2068                                        charset);
2069         }
2070         else if (r->which == Z_External_grs1)
2071         {
2072             if (len) *len = 5;
2073             return "GRS-1";
2074         }
2075         return 0;
2076     }
2077     else if (!strcmp(type, "raw"))
2078     {
2079         Z_External *r = (Z_External *) npr->u.databaseRecord;
2080
2081         if (r->which == Z_External_sutrs)
2082         {
2083             if (len) *len = r->u.sutrs->len;
2084             return (const char *) r->u.sutrs->buf;
2085         }
2086         else if (r->which == Z_External_octet)
2087         {
2088             if (len) *len = r->u.octet_aligned->len;
2089             return (const char *) r->u.octet_aligned->buf;
2090         }
2091         else /* grs-1, explain, OPAC, ... */
2092         {
2093             if (len) *len = -1;
2094             return (const char *) npr->u.databaseRecord;
2095         }
2096         return 0;
2097     }
2098     else if (!strcmp (type, "ext"))
2099     {
2100         if (len) *len = -1;
2101         return (const char *) npr->u.databaseRecord;
2102     }
2103     else if (!strcmp (type, "opac"))
2104
2105     {
2106         Z_External *r = (Z_External *) npr->u.databaseRecord;
2107         if (r->which == Z_External_OPAC)
2108         {
2109             if (!rec->wrbuf_opac)
2110                 rec->wrbuf_opac = wrbuf_alloc();
2111             wrbuf_rewind(rec->wrbuf_opac);
2112             yaz_display_OPAC(rec->wrbuf_opac, r->u.opac, 0);
2113             return record_iconv_return(rec, len,
2114                                        wrbuf_buf(rec->wrbuf_opac),
2115                                        wrbuf_len(rec->wrbuf_opac),
2116                                        charset);
2117         }
2118     }
2119     return 0;
2120 }
2121
2122 static int strcmp_null(const char *v1, const char *v2)
2123 {
2124     if (!v1 && !v2)
2125         return 0;
2126     if (!v1 || !v2)
2127         return -1;
2128     return strcmp(v1, v2);
2129 }
2130
2131 static size_t record_hash(int pos)
2132 {
2133     if (pos < 0)
2134         pos = 0;
2135     return pos % RECORD_HASH_SIZE;
2136 }
2137
2138 static void record_cache_add(ZOOM_resultset r, Z_NamePlusRecord *npr,
2139                              int pos,
2140                              const char *syntax, const char *elementSetName)
2141 {
2142     ZOOM_record_cache rc;
2143
2144     ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
2145     ZOOM_connection_put_event(r->connection, event);
2146
2147     for (rc = r->record_hash[record_hash(pos)]; rc; rc = rc->next)
2148     {
2149         if (pos == rc->pos)
2150         {
2151             if (strcmp_null(r->schema, rc->schema))
2152                 continue;
2153             if (strcmp_null(elementSetName,rc->elementSetName))
2154                 continue;
2155             if (strcmp_null(syntax, rc->syntax))
2156                 continue;
2157             /* not destroying rc->npr (it's handled by nmem )*/
2158             rc->rec.npr = npr;
2159             /* keeping wrbuf_marc too */
2160             return;
2161         }
2162     }
2163     rc = (ZOOM_record_cache) odr_malloc(r->odr, sizeof(*rc));
2164     rc->rec.npr = npr;
2165     rc->rec.odr = 0;
2166     rc->rec.wrbuf_marc = 0;
2167     rc->rec.wrbuf_iconv = 0;
2168     rc->rec.wrbuf_opac = 0;
2169     if (elementSetName)
2170         rc->elementSetName = odr_strdup(r->odr, elementSetName);
2171     else
2172         rc->elementSetName = 0;
2173
2174     if (syntax)
2175         rc->syntax = odr_strdup(r->odr, syntax);
2176     else
2177         rc->syntax = 0;
2178
2179     if (r->schema)
2180         rc->schema = odr_strdup(r->odr, r->schema);
2181     else
2182         rc->schema = 0;
2183
2184     rc->pos = pos;
2185     rc->next = r->record_hash[record_hash(pos)];
2186     r->record_hash[record_hash(pos)] = rc;
2187 }
2188
2189 static ZOOM_record record_cache_lookup(ZOOM_resultset r, int pos,
2190                                        const char *syntax,
2191                                        const char *elementSetName)
2192 {
2193     ZOOM_record_cache rc;
2194
2195     for (rc = r->record_hash[record_hash(pos)]; rc; rc = rc->next)
2196     {
2197         if (pos == rc->pos)
2198         {
2199             if (strcmp_null(r->schema, rc->schema))
2200                 continue;
2201             if (strcmp_null(elementSetName,rc->elementSetName))
2202                 continue;
2203             if (strcmp_null(syntax, rc->syntax))
2204                 continue;
2205             return &rc->rec;
2206         }
2207     }
2208     return 0;
2209 }
2210
2211 static void handle_records(ZOOM_connection c, Z_Records *sr,
2212                            int present_phase)
2213 {
2214     ZOOM_resultset resultset;
2215     int *start, *count;
2216     const char *syntax = 0, *elementSetName = 0;
2217
2218     if (!c->tasks)
2219         return ;
2220     switch (c->tasks->which)
2221     {
2222     case ZOOM_TASK_SEARCH:
2223         resultset = c->tasks->u.search.resultset;
2224         start = &c->tasks->u.search.start;
2225         count = &c->tasks->u.search.count;
2226         syntax = c->tasks->u.search.syntax;
2227         elementSetName = c->tasks->u.search.elementSetName;
2228         break;
2229     case ZOOM_TASK_RETRIEVE:
2230         resultset = c->tasks->u.retrieve.resultset;
2231         start = &c->tasks->u.retrieve.start;
2232         count = &c->tasks->u.retrieve.count;
2233         syntax = c->tasks->u.retrieve.syntax;
2234         elementSetName = c->tasks->u.retrieve.elementSetName;
2235         break;
2236     default:
2237         return;
2238     }
2239     if (sr && sr->which == Z_Records_NSD)
2240         response_default_diag(c, sr->u.nonSurrogateDiagnostic);
2241     else if (sr && sr->which == Z_Records_multipleNSD)
2242     {
2243         if (sr->u.multipleNonSurDiagnostics->num_diagRecs >= 1)
2244             response_diag(c, sr->u.multipleNonSurDiagnostics->diagRecs[0]);
2245         else
2246             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2247     }
2248     else
2249     {
2250         if (*count + *start > resultset->size)
2251             *count = resultset->size - *start;
2252         if (*count < 0)
2253             *count = 0;
2254         if (sr && sr->which == Z_Records_DBOSD)
2255         {
2256             int i;
2257             NMEM nmem = odr_extract_mem(c->odr_in);
2258             Z_NamePlusRecordList *p =
2259                 sr->u.databaseOrSurDiagnostics;
2260             for (i = 0; i<p->num_records; i++)
2261             {
2262                 record_cache_add(resultset, p->records[i], i + *start,
2263                                  syntax, elementSetName);
2264             }
2265             *count -= i;
2266             *start += i;
2267             yaz_log(log_details,
2268                     "handle_records resultset=%p start=%d count=%d",
2269                     resultset, *start, *count);
2270
2271             /* transfer our response to search_nmem .. we need it later */
2272             nmem_transfer(resultset->odr->mem, nmem);
2273             nmem_destroy(nmem);
2274             if (present_phase && p->num_records == 0)
2275             {
2276                 /* present response and we didn't get any records! */
2277                 Z_NamePlusRecord *myrec =
2278                     zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2279                 record_cache_add(resultset, myrec, *start,
2280                                  syntax, elementSetName);
2281             }
2282         }
2283         else if (present_phase)
2284         {
2285             /* present response and we didn't get any records! */
2286             Z_NamePlusRecord *myrec =
2287                 zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2288             record_cache_add(resultset, myrec, *start, syntax, elementSetName);
2289         }
2290     }
2291 }
2292
2293 static void handle_present_response(ZOOM_connection c, Z_PresentResponse *pr)
2294 {
2295     handle_records(c, pr->records, 1);
2296 }
2297
2298 static void handle_queryExpressionTerm(ZOOM_options opt, const char *name,
2299                                        Z_Term *term)
2300 {
2301     switch (term->which)
2302     {
2303     case Z_Term_general:
2304         ZOOM_options_setl(opt, name,
2305                           (const char *)(term->u.general->buf),
2306                           term->u.general->len);
2307         break;
2308     case Z_Term_characterString:
2309         ZOOM_options_set(opt, name, term->u.characterString);
2310         break;
2311     case Z_Term_numeric:
2312         ZOOM_options_set_int(opt, name, *term->u.numeric);
2313         break;
2314     }
2315 }
2316
2317 static void handle_queryExpression(ZOOM_options opt, const char *name,
2318                                    Z_QueryExpression *exp)
2319 {
2320     char opt_name[80];
2321
2322     switch (exp->which)
2323     {
2324     case Z_QueryExpression_term:
2325         if (exp->u.term && exp->u.term->queryTerm)
2326         {
2327             sprintf(opt_name, "%s.term", name);
2328             handle_queryExpressionTerm(opt, opt_name, exp->u.term->queryTerm);
2329         }
2330         break;
2331     case Z_QueryExpression_query:
2332         break;
2333     }
2334 }
2335
2336 static void handle_searchResult(ZOOM_connection c, ZOOM_resultset resultset,
2337                                 Z_OtherInformation *o)
2338 {
2339     int i;
2340     for (i = 0; o && i < o->num_elements; i++)
2341     {
2342         if (o->list[i]->which == Z_OtherInfo_externallyDefinedInfo)
2343         {
2344             Z_External *ext = o->list[i]->information.externallyDefinedInfo;
2345
2346             if (ext->which == Z_External_searchResult1)
2347             {
2348                 int j;
2349                 Z_SearchInfoReport *sr = ext->u.searchResult1;
2350
2351                 if (sr->num)
2352                     ZOOM_options_set_int(
2353                         resultset->options, "searchresult.size", sr->num);
2354
2355                 for (j = 0; j < sr->num; j++)
2356                 {
2357                     Z_SearchInfoReport_s *ent =
2358                         ext->u.searchResult1->elements[j];
2359                     char pref[80];
2360
2361                     sprintf(pref, "searchresult.%d", j);
2362
2363                     if (ent->subqueryId)
2364                     {
2365                         char opt_name[80];
2366                         sprintf(opt_name, "%s.id", pref);
2367                         ZOOM_options_set(resultset->options, opt_name,
2368                                          ent->subqueryId);
2369                     }
2370                     if (ent->subqueryExpression)
2371                     {
2372                         char opt_name[80];
2373                         sprintf(opt_name, "%s.subquery", pref);
2374                         handle_queryExpression(resultset->options, opt_name,
2375                                                ent->subqueryExpression);
2376                     }
2377                     if (ent->subqueryInterpretation)
2378                     {
2379                         char opt_name[80];
2380                         sprintf(opt_name, "%s.interpretation", pref);
2381                         handle_queryExpression(resultset->options, opt_name,
2382                                                ent->subqueryInterpretation);
2383                     }
2384                     if (ent->subqueryRecommendation)
2385                     {
2386                         char opt_name[80];
2387                         sprintf(opt_name, "%s.recommendation", pref);
2388                         handle_queryExpression(resultset->options, opt_name,
2389                                                ent->subqueryRecommendation);
2390                     }
2391                     if (ent->subqueryCount)
2392                     {
2393                         char opt_name[80];
2394                         sprintf(opt_name, "%s.count", pref);
2395                         ZOOM_options_set_int(resultset->options, opt_name,
2396                                              *ent->subqueryCount);
2397                     }
2398                 }
2399             }
2400         }
2401     }
2402 }
2403
2404 static void handle_search_response(ZOOM_connection c, Z_SearchResponse *sr)
2405 {
2406     ZOOM_resultset resultset;
2407     ZOOM_Event event;
2408
2409     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
2410         return ;
2411
2412     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
2413     ZOOM_connection_put_event(c, event);
2414
2415     resultset = c->tasks->u.search.resultset;
2416
2417     handle_searchResult(c, resultset, sr->additionalSearchInfo);
2418
2419     resultset->size = *sr->resultCount;
2420     handle_records(c, sr->records, 0);
2421 }
2422
2423 static void sort_response(ZOOM_connection c, Z_SortResponse *res)
2424 {
2425     if (res->diagnostics && res->num_diagnostics > 0)
2426         response_diag(c, res->diagnostics[0]);
2427 }
2428
2429 static int scan_response(ZOOM_connection c, Z_ScanResponse *res)
2430 {
2431     NMEM nmem = odr_extract_mem(c->odr_in);
2432     ZOOM_scanset scan;
2433
2434     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
2435         return 0;
2436     scan = c->tasks->u.scan.scan;
2437
2438     if (res->entries && res->entries->nonsurrogateDiagnostics)
2439         response_diag(c, res->entries->nonsurrogateDiagnostics[0]);
2440     scan->scan_response = res;
2441     nmem_transfer(scan->odr->mem, nmem);
2442     if (res->stepSize)
2443         ZOOM_options_set_int(scan->options, "stepSize", *res->stepSize);
2444     if (res->positionOfTerm)
2445         ZOOM_options_set_int(scan->options, "position", *res->positionOfTerm);
2446     if (res->scanStatus)
2447         ZOOM_options_set_int(scan->options, "scanStatus", *res->scanStatus);
2448     if (res->numberOfEntriesReturned)
2449         ZOOM_options_set_int(scan->options, "number",
2450                              *res->numberOfEntriesReturned);
2451     nmem_destroy(nmem);
2452     return 1;
2453 }
2454
2455 static zoom_ret send_sort(ZOOM_connection c,
2456                           ZOOM_resultset resultset)
2457 {
2458     if (c->error)
2459         resultset->r_sort_spec = 0;
2460     if (resultset->r_sort_spec)
2461     {
2462         Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_sortRequest);
2463         Z_SortRequest *req = apdu->u.sortRequest;
2464
2465         req->num_inputResultSetNames = 1;
2466         req->inputResultSetNames = (Z_InternationalString **)
2467             odr_malloc(c->odr_out, sizeof(*req->inputResultSetNames));
2468         req->inputResultSetNames[0] =
2469             odr_strdup(c->odr_out, resultset->setname);
2470         req->sortedResultSetName = odr_strdup(c->odr_out, resultset->setname);
2471         req->sortSequence = resultset->r_sort_spec;
2472         resultset->r_sort_spec = 0;
2473         return send_APDU(c, apdu);
2474     }
2475     return zoom_complete;
2476 }
2477
2478 static zoom_ret send_present(ZOOM_connection c)
2479 {
2480     Z_APDU *apdu = 0;
2481     Z_PresentRequest *req = 0;
2482     int i = 0;
2483     const char *syntax = 0;
2484     const char *elementSetName = 0;
2485     ZOOM_resultset  resultset;
2486     int *start, *count;
2487
2488     if (!c->tasks)
2489     {
2490         yaz_log(log_details, "%p send_present no tasks", c);
2491         return zoom_complete;
2492     }
2493
2494     switch (c->tasks->which)
2495     {
2496     case ZOOM_TASK_SEARCH:
2497         resultset = c->tasks->u.search.resultset;
2498         start = &c->tasks->u.search.start;
2499         count = &c->tasks->u.search.count;
2500         syntax = c->tasks->u.search.syntax;
2501         elementSetName = c->tasks->u.search.elementSetName;
2502         break;
2503     case ZOOM_TASK_RETRIEVE:
2504         resultset = c->tasks->u.retrieve.resultset;
2505         start = &c->tasks->u.retrieve.start;
2506         count = &c->tasks->u.retrieve.count;
2507         syntax = c->tasks->u.retrieve.syntax;
2508         elementSetName = c->tasks->u.retrieve.elementSetName;
2509
2510         if (*start >= resultset->size)
2511         {
2512             yaz_log(log_details, "%p send_present start=%d >= size=%d",
2513                     c, *start, resultset->size);
2514             return zoom_complete;
2515         }
2516         if (*start + *count > resultset->size)
2517             *count = resultset->size - *start;
2518         break;
2519     default:
2520         return zoom_complete;
2521     }
2522     yaz_log(log_details, "%p send_present start=%d count=%d",
2523             c, *start, *count);
2524
2525     if (c->error)                  /* don't continue on error */
2526         return zoom_complete;
2527     if (*start < 0)
2528         return zoom_complete;
2529     yaz_log(log_details, "send_present resultset=%p start=%d count=%d",
2530             resultset, *start, *count);
2531
2532     for (i = 0; i < *count; i++)
2533     {
2534         ZOOM_record rec =
2535             record_cache_lookup(resultset, i + *start, syntax, elementSetName);
2536         if (!rec)
2537             break;
2538         else
2539         {
2540             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
2541             ZOOM_connection_put_event(c, event);
2542         }
2543     }
2544     *start += i;
2545     *count -= i;
2546
2547     if (*count == 0)
2548     {
2549         yaz_log(log_details, "%p send_present skip=%d no more to fetch", c, i);
2550         return zoom_complete;
2551     }
2552
2553     apdu = zget_APDU(c->odr_out, Z_APDU_presentRequest);
2554     req = apdu->u.presentRequest;
2555
2556     if (i)
2557         yaz_log(log_details, "%p send_present skip=%d", c, i);
2558
2559     *req->resultSetStartPoint = *start + 1;
2560     *req->numberOfRecordsRequested = resultset->step>0 ?
2561         resultset->step : *count;
2562     if (*req->numberOfRecordsRequested + *start > resultset->size)
2563         *req->numberOfRecordsRequested = resultset->size - *start;
2564     assert(*req->numberOfRecordsRequested > 0);
2565
2566     if (syntax && *syntax)
2567         req->preferredRecordSyntax =
2568             yaz_str_to_z3950oid(c->odr_out, CLASS_RECSYN, syntax);
2569
2570     if (resultset->schema && *resultset->schema)
2571     {
2572         Z_RecordComposition *compo = (Z_RecordComposition *)
2573             odr_malloc(c->odr_out, sizeof(*compo));
2574
2575         req->recordComposition = compo;
2576         compo->which = Z_RecordComp_complex;
2577         compo->u.complex = (Z_CompSpec *)
2578             odr_malloc(c->odr_out, sizeof(*compo->u.complex));
2579         compo->u.complex->selectAlternativeSyntax = (bool_t *)
2580             odr_malloc(c->odr_out, sizeof(bool_t));
2581         *compo->u.complex->selectAlternativeSyntax = 0;
2582
2583         compo->u.complex->generic = (Z_Specification *)
2584             odr_malloc(c->odr_out, sizeof(*compo->u.complex->generic));
2585
2586         compo->u.complex->generic->which = Z_Schema_oid;
2587         compo->u.complex->generic->schema.oid = (Odr_oid *)
2588             yaz_str_to_z3950oid (c->odr_out, CLASS_SCHEMA, resultset->schema);
2589
2590         if (!compo->u.complex->generic->schema.oid)
2591         {
2592             /* OID wasn't a schema! Try record syntax instead. */
2593
2594             compo->u.complex->generic->schema.oid = (Odr_oid *)
2595                 yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, resultset->schema);
2596         }
2597         if (elementSetName && *elementSetName)
2598         {
2599             compo->u.complex->generic->elementSpec = (Z_ElementSpec *)
2600                 odr_malloc(c->odr_out, sizeof(Z_ElementSpec));
2601             compo->u.complex->generic->elementSpec->which =
2602                 Z_ElementSpec_elementSetName;
2603             compo->u.complex->generic->elementSpec->u.elementSetName =
2604                 odr_strdup(c->odr_out, elementSetName);
2605         }
2606         else
2607             compo->u.complex->generic->elementSpec = 0;
2608         compo->u.complex->num_dbSpecific = 0;
2609         compo->u.complex->dbSpecific = 0;
2610         compo->u.complex->num_recordSyntax = 0;
2611         compo->u.complex->recordSyntax = 0;
2612     }
2613     else if (elementSetName && *elementSetName)
2614     {
2615         Z_ElementSetNames *esn = (Z_ElementSetNames *)
2616             odr_malloc(c->odr_out, sizeof(*esn));
2617         Z_RecordComposition *compo = (Z_RecordComposition *)
2618             odr_malloc(c->odr_out, sizeof(*compo));
2619
2620         esn->which = Z_ElementSetNames_generic;
2621         esn->u.generic = odr_strdup(c->odr_out, elementSetName);
2622         compo->which = Z_RecordComp_simple;
2623         compo->u.simple = esn;
2624         req->recordComposition = compo;
2625     }
2626     req->resultSetId = odr_strdup(c->odr_out, resultset->setname);
2627     return send_APDU(c, apdu);
2628 }
2629
2630 ZOOM_API(ZOOM_scanset)
2631     ZOOM_connection_scan(ZOOM_connection c, const char *start)
2632 {
2633     ZOOM_scanset s;
2634     ZOOM_query q = ZOOM_query_create();
2635
2636     ZOOM_query_prefix(q, start);
2637
2638     s = ZOOM_connection_scan1(c, q);
2639     ZOOM_query_destroy(q);
2640     return s;
2641
2642 }
2643
2644 ZOOM_API(ZOOM_scanset)
2645     ZOOM_connection_scan1(ZOOM_connection c, ZOOM_query q)
2646 {
2647     char *start;
2648     char *freeme = 0;
2649     ZOOM_scanset scan = 0;
2650
2651     /*
2652      * We need to check the query-type, so we can recognise CQL and
2653      * CCL and compile them into a form that we can use here.  The
2654      * ZOOM_query structure has no explicit `type' member, but
2655      * inspection of the ZOOM_query_prefix() and ZOOM_query_cql()
2656      * functions shows how the structure is set up in each case.
2657      */
2658     if (!q->z_query)
2659         return 0;
2660     else if (q->z_query->which == Z_Query_type_1)
2661     {
2662         yaz_log(log_api, "%p ZOOM_connection_scan1 q=%p PQF '%s'",
2663                 c, q, q->query_string);
2664         start = q->query_string;
2665     }
2666     else if (q->z_query->which == Z_Query_type_104)
2667     {
2668         yaz_log(log_api, "%p ZOOM_connection_scan1 q=%p CQL '%s'",
2669                 c, q, q->query_string);
2670         start = freeme = cql2pqf(c, q->query_string);
2671         if (start == 0)
2672             return 0;
2673     }
2674     else
2675     {
2676         yaz_log(YLOG_FATAL, "%p ZOOM_connection_scan1 q=%p unknown type '%s'",
2677                 c, q, q->query_string);
2678         abort();
2679     }
2680
2681     scan = (ZOOM_scanset) xmalloc(sizeof(*scan));
2682     scan->connection = c;
2683     scan->odr = odr_createmem(ODR_DECODE);
2684     scan->options = ZOOM_options_create_with_parent(c->options);
2685     scan->refcount = 1;
2686     scan->scan_response = 0;
2687     scan->termListAndStartPoint =
2688         p_query_scan(scan->odr, PROTO_Z3950, &scan->attributeSet, start);
2689     xfree(freeme);
2690
2691     scan->databaseNames = set_DatabaseNames(c, c->options,
2692                                             &scan->num_databaseNames,
2693                                             scan->odr);
2694     if (scan->termListAndStartPoint != 0)
2695     {
2696         ZOOM_task task = ZOOM_connection_add_task(c, ZOOM_TASK_SCAN);
2697         task->u.scan.scan = scan;
2698
2699         (scan->refcount)++;
2700         if (!c->async)
2701         {
2702             while (ZOOM_event(1, &c))
2703                 ;
2704         }
2705     }
2706     return scan;
2707 }
2708
2709 ZOOM_API(void)
2710     ZOOM_scanset_destroy(ZOOM_scanset scan)
2711 {
2712     if (!scan)
2713         return;
2714     (scan->refcount)--;
2715     if (scan->refcount == 0)
2716     {
2717         odr_destroy(scan->odr);
2718
2719         ZOOM_options_destroy(scan->options);
2720         xfree(scan);
2721     }
2722 }
2723
2724 static zoom_ret send_package(ZOOM_connection c)
2725 {
2726     ZOOM_Event event;
2727
2728     yaz_log(log_details, "%p send_package", c);
2729     if (!c->tasks)
2730         return zoom_complete;
2731     assert (c->tasks->which == ZOOM_TASK_PACKAGE);
2732
2733     event = ZOOM_Event_create(ZOOM_EVENT_SEND_APDU);
2734     ZOOM_connection_put_event(c, event);
2735
2736     c->buf_out = c->tasks->u.package->buf_out;
2737     c->len_out = c->tasks->u.package->len_out;
2738
2739     return do_write(c);
2740 }
2741
2742 static zoom_ret send_scan(ZOOM_connection c)
2743 {
2744     ZOOM_scanset scan;
2745     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_scanRequest);
2746     Z_ScanRequest *req = apdu->u.scanRequest;
2747
2748     yaz_log(log_details, "%p send_scan", c);
2749     if (!c->tasks)
2750         return zoom_complete;
2751     assert (c->tasks->which == ZOOM_TASK_SCAN);
2752     scan = c->tasks->u.scan.scan;
2753
2754     req->termListAndStartPoint = scan->termListAndStartPoint;
2755     req->attributeSet = scan->attributeSet;
2756
2757     *req->numberOfTermsRequested =
2758         ZOOM_options_get_int(scan->options, "number", 10);
2759
2760     req->preferredPositionInResponse =
2761         odr_intdup(c->odr_out,
2762                    ZOOM_options_get_int(scan->options, "position", 1));
2763
2764     req->stepSize =
2765         odr_intdup(c->odr_out,
2766                    ZOOM_options_get_int(scan->options, "stepSize", 0));
2767
2768     req->databaseNames = scan->databaseNames;
2769     req->num_databaseNames = scan->num_databaseNames;
2770
2771     return send_APDU(c, apdu);
2772 }
2773
2774 ZOOM_API(size_t)
2775     ZOOM_scanset_size(ZOOM_scanset scan)
2776 {
2777     if (!scan || !scan->scan_response || !scan->scan_response->entries)
2778         return 0;
2779     return scan->scan_response->entries->num_entries;
2780 }
2781
2782 ZOOM_API(const char *)
2783     ZOOM_scanset_term(ZOOM_scanset scan, size_t pos,
2784                       int *occ, int *len)
2785 {
2786     const char *term = 0;
2787     size_t noent = ZOOM_scanset_size(scan);
2788     Z_ScanResponse *res = scan->scan_response;
2789
2790     *len = 0;
2791     *occ = 0;
2792     if (pos >= noent)
2793         return 0;
2794     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2795     {
2796         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2797
2798         if (t->term->which == Z_Term_general)
2799         {
2800             term = (const char *) t->term->u.general->buf;
2801             *len = t->term->u.general->len;
2802         }
2803         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2804     }
2805     return term;
2806 }
2807
2808 ZOOM_API(const char *)
2809     ZOOM_scanset_display_term(ZOOM_scanset scan, size_t pos,
2810                               int *occ, int *len)
2811 {
2812     const char *term = 0;
2813     size_t noent = ZOOM_scanset_size(scan);
2814     Z_ScanResponse *res = scan->scan_response;
2815
2816     *len = 0;
2817     *occ = 0;
2818     if (pos >= noent)
2819         return 0;
2820     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2821     {
2822         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2823
2824         if (t->displayTerm)
2825         {
2826             term = t->displayTerm;
2827             *len = strlen(term);
2828         }
2829         else if (t->term->which == Z_Term_general)
2830         {
2831             term = (const char *) t->term->u.general->buf;
2832             *len = t->term->u.general->len;
2833         }
2834         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2835     }
2836     return term;
2837 }
2838
2839 ZOOM_API(const char *)
2840     ZOOM_scanset_option_get(ZOOM_scanset scan, const char *key)
2841 {
2842     return ZOOM_options_get(scan->options, key);
2843 }
2844
2845 ZOOM_API(void)
2846     ZOOM_scanset_option_set(ZOOM_scanset scan, const char *key,
2847                             const char *val)
2848 {
2849     ZOOM_options_set(scan->options, key, val);
2850 }
2851
2852 static Z_APDU *create_es_package(ZOOM_package p, int type)
2853 {
2854     const char *str;
2855     Z_APDU *apdu = zget_APDU(p->odr_out, Z_APDU_extendedServicesRequest);
2856     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2857
2858     *req->function = Z_ExtendedServicesRequest_create;
2859
2860     str = ZOOM_options_get(p->options, "package-name");
2861     if (str && *str)
2862         req->packageName = nmem_strdup(p->odr_out->mem, str);
2863
2864     str = ZOOM_options_get(p->options, "user-id");
2865     if (str)
2866         req->userId = nmem_strdup(p->odr_out->mem, str);
2867
2868     req->packageType = yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2869                                               type);
2870
2871     str = ZOOM_options_get(p->options, "function");
2872     if (str)
2873     {
2874         if (!strcmp (str, "create"))
2875             *req->function = 1;
2876         if (!strcmp (str, "delete"))
2877             *req->function = 2;
2878         if (!strcmp (str, "modify"))
2879             *req->function = 3;
2880     }
2881     return apdu;
2882 }
2883
2884 static const char *ill_array_lookup(void *clientData, const char *idx)
2885 {
2886     ZOOM_package p = (ZOOM_package) clientData;
2887     return ZOOM_options_get(p->options, idx+4);
2888 }
2889
2890 static Z_External *encode_ill_request(ZOOM_package p)
2891 {
2892     ODR out = p->odr_out;
2893     ILL_Request *req;
2894     Z_External *r = 0;
2895     struct ill_get_ctl ctl;
2896
2897     ctl.odr = p->odr_out;
2898     ctl.clientData = p;
2899     ctl.f = ill_array_lookup;
2900
2901     req = ill_get_ILLRequest(&ctl, "ill", 0);
2902
2903     if (!ill_Request(out, &req, 0, 0))
2904     {
2905         int ill_request_size;
2906         char *ill_request_buf = odr_getbuf(out, &ill_request_size, 0);
2907         if (ill_request_buf)
2908             odr_setbuf(out, ill_request_buf, ill_request_size, 1);
2909         return 0;
2910     }
2911     else
2912     {
2913         oident oid;
2914         int illRequest_size = 0;
2915         char *illRequest_buf = odr_getbuf(out, &illRequest_size, 0);
2916
2917         oid.proto = PROTO_GENERAL;
2918         oid.oclass = CLASS_GENERAL;
2919         oid.value = VAL_ISO_ILL_1;
2920
2921         r = (Z_External *) odr_malloc(out, sizeof(*r));
2922         r->direct_reference = odr_oiddup(out,oid_getoidbyent(&oid));
2923         r->indirect_reference = 0;
2924         r->descriptor = 0;
2925         r->which = Z_External_single;
2926
2927         r->u.single_ASN1_type =
2928             odr_create_Odr_oct(out,
2929                                (unsigned char *)illRequest_buf,
2930                                illRequest_size);
2931     }
2932     return r;
2933 }
2934
2935 static Z_ItemOrder *encode_item_order(ZOOM_package p)
2936 {
2937     Z_ItemOrder *req = (Z_ItemOrder *) odr_malloc(p->odr_out, sizeof(*req));
2938     const char *str;
2939
2940     req->which = Z_IOItemOrder_esRequest;
2941     req->u.esRequest = (Z_IORequest *)
2942         odr_malloc(p->odr_out,sizeof(Z_IORequest));
2943
2944     /* to keep part ... */
2945     req->u.esRequest->toKeep = (Z_IOOriginPartToKeep *)
2946         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartToKeep));
2947     req->u.esRequest->toKeep->supplDescription = 0;
2948     req->u.esRequest->toKeep->contact = (Z_IOContact *)
2949         odr_malloc(p->odr_out, sizeof(*req->u.esRequest->toKeep->contact));
2950
2951     str = ZOOM_options_get(p->options, "contact-name");
2952     req->u.esRequest->toKeep->contact->name = str ?
2953         nmem_strdup(p->odr_out->mem, str) : 0;
2954
2955     str = ZOOM_options_get(p->options, "contact-phone");
2956     req->u.esRequest->toKeep->contact->phone = str ?
2957         nmem_strdup(p->odr_out->mem, str) : 0;
2958
2959     str = ZOOM_options_get(p->options, "contact-email");
2960     req->u.esRequest->toKeep->contact->email = str ?
2961         nmem_strdup(p->odr_out->mem, str) : 0;
2962
2963     req->u.esRequest->toKeep->addlBilling = 0;
2964
2965     /* not to keep part ... */
2966     req->u.esRequest->notToKeep = (Z_IOOriginPartNotToKeep *)
2967         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartNotToKeep));
2968
2969     str = ZOOM_options_get(p->options, "itemorder-setname");
2970     if (!str)
2971         str = "default";
2972
2973     if (!*str)
2974         req->u.esRequest->notToKeep->resultSetItem = 0;
2975     else
2976     {
2977         req->u.esRequest->notToKeep->resultSetItem = (Z_IOResultSetItem *)
2978             odr_malloc(p->odr_out, sizeof(Z_IOResultSetItem));
2979
2980         req->u.esRequest->notToKeep->resultSetItem->resultSetId =
2981             nmem_strdup(p->odr_out->mem, str);
2982         req->u.esRequest->notToKeep->resultSetItem->item =
2983             (int *) odr_malloc(p->odr_out, sizeof(int));
2984
2985         str = ZOOM_options_get(p->options, "itemorder-item");
2986         *req->u.esRequest->notToKeep->resultSetItem->item =
2987             (str ? atoi(str) : 1);
2988     }
2989     req->u.esRequest->notToKeep->itemRequest = encode_ill_request(p);
2990
2991     return req;
2992 }
2993
2994 Z_APDU *create_admin_package(ZOOM_package p, int type,
2995                              Z_ESAdminOriginPartToKeep **toKeepP,
2996                              Z_ESAdminOriginPartNotToKeep **notToKeepP)
2997 {
2998     Z_APDU *apdu = create_es_package(p, VAL_ADMINSERVICE);
2999     if (apdu)
3000     {
3001         Z_ESAdminOriginPartToKeep  *toKeep;
3002         Z_ESAdminOriginPartNotToKeep  *notToKeep;
3003         Z_External *r = (Z_External *) odr_malloc(p->odr_out, sizeof(*r));
3004         const char *first_db = "Default";
3005         int num_db;
3006         char **db = set_DatabaseNames(p->connection, p->options, &num_db,
3007                                       p->odr_out);
3008         if (num_db > 0)
3009             first_db = db[0];
3010
3011         r->direct_reference =
3012             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
3013                                    VAL_ADMINSERVICE);
3014         r->descriptor = 0;
3015         r->indirect_reference = 0;
3016         r->which = Z_External_ESAdmin;
3017
3018         r->u.adminService = (Z_Admin *)
3019             odr_malloc(p->odr_out, sizeof(*r->u.adminService));
3020         r->u.adminService->which = Z_Admin_esRequest;
3021         r->u.adminService->u.esRequest = (Z_AdminEsRequest *)
3022             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest));
3023
3024         toKeep = r->u.adminService->u.esRequest->toKeep =
3025             (Z_ESAdminOriginPartToKeep *)
3026             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest->toKeep));
3027         toKeep->which = type;
3028         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
3029         toKeep->u.create = odr_nullval();
3030         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3031
3032         r->u.adminService->u.esRequest->notToKeep = notToKeep =
3033             (Z_ESAdminOriginPartNotToKeep *)
3034             odr_malloc(p->odr_out,
3035                        sizeof(*r->u.adminService->u.esRequest->notToKeep));
3036         notToKeep->which = Z_ESAdminOriginPartNotToKeep_recordsWillFollow;
3037         notToKeep->u.recordsWillFollow = odr_nullval();
3038         if (toKeepP)
3039             *toKeepP = toKeep;
3040         if (notToKeepP)
3041             *notToKeepP = notToKeep;
3042     }
3043     return apdu;
3044 }
3045
3046 static Z_APDU *create_xmlupdate_package(ZOOM_package p)
3047 {
3048     Z_APDU *apdu = create_es_package(p, VAL_XMLES);
3049     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
3050     Z_External *ext = (Z_External *) odr_malloc(p->odr_out, sizeof(*ext));
3051     const char *doc = ZOOM_options_get(p->options, "doc");
3052
3053     if (!doc)
3054         doc = "";
3055
3056     req->taskSpecificParameters = ext;
3057     ext->direct_reference = req->packageType;
3058     ext->descriptor = 0;
3059     ext->indirect_reference = 0;
3060
3061     ext->which = Z_External_octet;
3062     ext->u.single_ASN1_type =
3063         odr_create_Odr_oct(p->odr_out, (const unsigned char *) doc,
3064                            strlen(doc));
3065     return apdu;
3066 }
3067
3068 static Z_APDU *create_update_package(ZOOM_package p)
3069 {
3070     Z_APDU *apdu = 0;
3071     const char *first_db = "Default";
3072     int num_db;
3073     char **db = set_DatabaseNames(p->connection, p->options, &num_db, p->odr_out);
3074     const char *action = ZOOM_options_get(p->options, "action");
3075     const char *recordIdOpaque = ZOOM_options_get(p->options, "recordIdOpaque");
3076     const char *recordIdNumber = ZOOM_options_get(p->options, "recordIdNumber");
3077     const char *record_buf = ZOOM_options_get(p->options, "record");
3078     const char *syntax_str = ZOOM_options_get(p->options, "syntax");
3079     int syntax_oid = VAL_NONE;
3080     int action_no = -1;
3081
3082     if (syntax_str)
3083         syntax_oid = oid_getvalbyname(syntax_str);
3084     if (!record_buf)
3085     {
3086         record_buf = "void";
3087         syntax_oid = VAL_SUTRS;
3088     }
3089     if (syntax_oid == VAL_NONE)
3090         syntax_oid = VAL_TEXT_XML;
3091
3092     if (num_db > 0)
3093         first_db = db[0];
3094
3095     if (!action)
3096         action = "specialUpdate";
3097
3098     if (!strcmp(action, "recordInsert"))
3099         action_no = Z_IUOriginPartToKeep_recordInsert;
3100     else if (!strcmp(action, "recordReplace"))
3101         action_no = Z_IUOriginPartToKeep_recordReplace;
3102     else if (!strcmp(action, "recordDelete"))
3103         action_no = Z_IUOriginPartToKeep_recordDelete;
3104     else if (!strcmp(action, "elementUpdate"))
3105         action_no = Z_IUOriginPartToKeep_elementUpdate;
3106     else if (!strcmp(action, "specialUpdate"))
3107         action_no = Z_IUOriginPartToKeep_specialUpdate;
3108     else
3109         return 0;
3110
3111     apdu = create_es_package(p, VAL_DBUPDATE);
3112     if (apdu)
3113     {
3114         Z_IUOriginPartToKeep *toKeep;
3115         Z_IUSuppliedRecords *notToKeep;
3116         Z_External *r = (Z_External *)
3117             odr_malloc(p->odr_out, sizeof(*r));
3118
3119         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3120
3121         r->direct_reference =
3122             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
3123                                    VAL_DBUPDATE);
3124         r->descriptor = 0;
3125         r->which = Z_External_update;
3126         r->indirect_reference = 0;
3127         r->u.update = (Z_IUUpdate *)
3128             odr_malloc(p->odr_out, sizeof(*r->u.update));
3129
3130         r->u.update->which = Z_IUUpdate_esRequest;
3131         r->u.update->u.esRequest = (Z_IUUpdateEsRequest *)
3132             odr_malloc(p->odr_out, sizeof(*r->u.update->u.esRequest));
3133         toKeep = r->u.update->u.esRequest->toKeep =
3134             (Z_IUOriginPartToKeep *)
3135             odr_malloc(p->odr_out, sizeof(*toKeep));
3136
3137         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
3138         toKeep->schema = 0;
3139         toKeep->elementSetName = 0;
3140         toKeep->actionQualifier = 0;
3141         toKeep->action = odr_intdup(p->odr_out, action_no);
3142
3143         notToKeep = r->u.update->u.esRequest->notToKeep =
3144             (Z_IUSuppliedRecords *)
3145             odr_malloc(p->odr_out, sizeof(*notToKeep));
3146         notToKeep->num = 1;
3147         notToKeep->elements = (Z_IUSuppliedRecords_elem **)
3148             odr_malloc(p->odr_out, sizeof(*notToKeep->elements));
3149         notToKeep->elements[0] = (Z_IUSuppliedRecords_elem *)
3150             odr_malloc(p->odr_out, sizeof(**notToKeep->elements));
3151         notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_opaque;
3152         if (recordIdOpaque)
3153         {
3154             notToKeep->elements[0]->u.opaque =
3155                 odr_create_Odr_oct(p->odr_out,
3156                                    (const unsigned char *) recordIdOpaque,
3157                                    strlen(recordIdOpaque));
3158         }
3159         else if (recordIdNumber)
3160         {
3161             notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_number;
3162
3163             notToKeep->elements[0]->u.number =
3164                 odr_intdup(p->odr_out, atoi(recordIdNumber));
3165         }
3166         else
3167             notToKeep->elements[0]->u.opaque = 0;
3168         notToKeep->elements[0]->supplementalId = 0;
3169         notToKeep->elements[0]->correlationInfo = 0;
3170         notToKeep->elements[0]->record =
3171             z_ext_record(p->odr_out, syntax_oid,
3172                          record_buf, strlen(record_buf));
3173     }
3174     if (0 && apdu)
3175     {
3176         ODR print = odr_createmem(ODR_PRINT);
3177
3178         z_APDU(print, &apdu, 0, 0);
3179         odr_destroy(print);
3180     }
3181     return apdu;
3182 }
3183
3184 ZOOM_API(void)
3185     ZOOM_package_send(ZOOM_package p, const char *type)
3186 {
3187     Z_APDU *apdu = 0;
3188     ZOOM_connection c;
3189     if (!p)
3190         return;
3191     c = p->connection;
3192     odr_reset(p->odr_out);
3193     xfree(p->buf_out);
3194     p->buf_out = 0;
3195     if (!strcmp(type, "itemorder"))
3196     {
3197         apdu = create_es_package(p, VAL_ITEMORDER);
3198         if (apdu)
3199         {
3200             Z_External *r = (Z_External *) odr_malloc(p->odr_out, sizeof(*r));
3201
3202             r->direct_reference =
3203                 yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
3204                                        VAL_ITEMORDER);
3205             r->descriptor = 0;
3206             r->which = Z_External_itemOrder;
3207             r->indirect_reference = 0;
3208             r->u.itemOrder = encode_item_order(p);
3209
3210             apdu->u.extendedServicesRequest->taskSpecificParameters = r;
3211         }
3212     }
3213     else if (!strcmp(type, "create"))  /* create database */
3214     {
3215         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_create,
3216                                     0, 0);
3217     }
3218     else if (!strcmp(type, "drop"))  /* drop database */
3219     {
3220         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_drop,
3221                                     0, 0);
3222     }
3223     else if (!strcmp(type, "commit"))  /* commit changes */
3224     {
3225         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_commit,
3226                                     0, 0);
3227     }
3228     else if (!strcmp(type, "update")) /* update record(s) */
3229     {
3230         apdu = create_update_package(p);
3231     }
3232     else if (!strcmp(type, "xmlupdate"))
3233     {
3234         apdu = create_xmlupdate_package(p);
3235     }
3236     if (apdu)
3237     {
3238         if (encode_APDU(p->connection, apdu, p->odr_out) == 0)
3239         {
3240             char *buf;
3241
3242             ZOOM_task task = ZOOM_connection_add_task(c, ZOOM_TASK_PACKAGE);
3243             task->u.package = p;
3244             buf = odr_getbuf(p->odr_out, &p->len_out, 0);
3245             p->buf_out = (char *) xmalloc(p->len_out);
3246             memcpy(p->buf_out, buf, p->len_out);
3247
3248             (p->refcount)++;
3249             if (!c->async)
3250             {
3251                 while (ZOOM_event(1, &c))
3252                     ;
3253             }
3254         }
3255     }
3256 }
3257
3258 ZOOM_API(ZOOM_package)
3259     ZOOM_connection_package(ZOOM_connection c, ZOOM_options options)
3260 {
3261     ZOOM_package p = (ZOOM_package) xmalloc(sizeof(*p));
3262
3263     p->connection = c;
3264     p->odr_out = odr_createmem(ODR_ENCODE);
3265     p->options = ZOOM_options_create_with_parent2(options, c->options);
3266     p->refcount = 1;
3267     p->buf_out = 0;
3268     p->len_out = 0;
3269     return p;
3270 }
3271
3272 ZOOM_API(void)
3273     ZOOM_package_destroy(ZOOM_package p)
3274 {
3275     if (!p)
3276         return;
3277     (p->refcount)--;
3278     if (p->refcount == 0)
3279     {
3280         odr_destroy(p->odr_out);
3281         xfree(p->buf_out);
3282
3283         ZOOM_options_destroy(p->options);
3284         xfree(p);
3285     }
3286 }
3287
3288 ZOOM_API(const char *)
3289     ZOOM_package_option_get(ZOOM_package p, const char *key)
3290 {
3291     return ZOOM_options_get(p->options, key);
3292 }
3293
3294
3295 ZOOM_API(void)
3296     ZOOM_package_option_set(ZOOM_package p, const char *key,
3297                             const char *val)
3298 {
3299     ZOOM_options_set(p->options, key, val);
3300 }
3301
3302 static int ZOOM_connection_exec_task(ZOOM_connection c)
3303 {
3304     ZOOM_task task = c->tasks;
3305     zoom_ret ret = zoom_complete;
3306
3307     if (!task)
3308         return 0;
3309     yaz_log(log_details, "%p ZOOM_connection_exec_task type=%d run=%d",
3310             c, task->which, task->running);
3311     if (c->error != ZOOM_ERROR_NONE)
3312     {
3313         yaz_log(YLOG_LOG, "%p ZOOM_connection_exec_task "
3314                 "removing tasks because of error = %d", c, c->error);
3315         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3316                 "removing tasks because of error = %d", c, c->error);
3317         ZOOM_connection_remove_tasks(c);
3318         return 0;
3319     }
3320     if (task->running)
3321     {
3322         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3323                 "task already running", c);
3324         return 0;
3325     }
3326     task->running = 1;
3327     ret = zoom_complete;
3328     if (c->cs || task->which == ZOOM_TASK_CONNECT)
3329     {
3330         switch (task->which)
3331         {
3332         case ZOOM_TASK_SEARCH:
3333             if (c->proto == PROTO_HTTP)
3334                 ret = ZOOM_connection_srw_send_search(c);
3335             else
3336                 ret = ZOOM_connection_send_search(c);
3337             break;
3338         case ZOOM_TASK_RETRIEVE:
3339             if (c->proto == PROTO_HTTP)
3340                 ret = ZOOM_connection_srw_send_search(c);
3341             else
3342                 ret = send_present(c);
3343             break;
3344         case ZOOM_TASK_CONNECT:
3345             ret = do_connect(c);
3346             break;
3347         case ZOOM_TASK_SCAN:
3348             ret = send_scan(c);
3349             break;
3350         case ZOOM_TASK_PACKAGE:
3351             ret = send_package(c);
3352             break;
3353         case ZOOM_TASK_SORT:
3354             c->tasks->u.sort.resultset->r_sort_spec =
3355                 c->tasks->u.sort.q->sort_spec;
3356             ret = send_sort(c, c->tasks->u.sort.resultset);
3357             break;
3358         }
3359     }
3360     else
3361     {
3362         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3363                 "remove tasks because no connection exist", c);
3364         ZOOM_connection_remove_tasks(c);
3365     }
3366     if (ret == zoom_complete)
3367     {
3368         yaz_log(log_details, "%p ZOOM_connection_exec_task "
3369                 "task removed (complete)", c);
3370         ZOOM_connection_remove_task(c);
3371         return 0;
3372     }
3373     yaz_log(log_details, "%p ZOOM_connection_exec_task "
3374             "task pending", c);
3375     return 1;
3376 }
3377
3378 static zoom_ret send_sort_present(ZOOM_connection c)
3379 {
3380     zoom_ret r = zoom_complete;
3381
3382     if (c->tasks && c->tasks->which == ZOOM_TASK_SEARCH)
3383         r = send_sort(c, c->tasks->u.search.resultset);
3384     if (r == zoom_complete)
3385         r = send_present(c);
3386     return r;
3387 }
3388
3389 static int es_response(ZOOM_connection c,
3390                        Z_ExtendedServicesResponse *res)
3391 {
3392     if (!c->tasks || c->tasks->which != ZOOM_TASK_PACKAGE)
3393         return 0;
3394     if (res->diagnostics && res->num_diagnostics > 0)
3395         response_diag(c, res->diagnostics[0]);
3396     if (res->taskPackage &&
3397         res->taskPackage->which == Z_External_extendedService)
3398     {
3399         Z_TaskPackage *taskPackage = res->taskPackage->u.extendedService;
3400         Odr_oct *id = taskPackage->targetReference;
3401
3402         if (id)
3403             ZOOM_options_setl(c->tasks->u.package->options,
3404                               "targetReference", (char*) id->buf, id->len);
3405     }
3406     if (res->taskPackage &&
3407         res->taskPackage->which == Z_External_octet)
3408     {
3409         Odr_oct *doc = res->taskPackage->u.octet_aligned;
3410         ZOOM_options_setl(c->tasks->u.package->options,
3411                           "xmlUpdateDoc", (char*) doc->buf, doc->len);
3412     }
3413     return 1;
3414 }
3415
3416 static void interpret_init_diag(ZOOM_connection c,
3417                                 Z_DiagnosticFormat *diag)
3418 {
3419     if (diag->num > 0)
3420     {
3421         Z_DiagnosticFormat_s *ds = diag->elements[0];
3422         if (ds->which == Z_DiagnosticFormat_s_defaultDiagRec)
3423             response_default_diag(c, ds->u.defaultDiagRec);
3424     }
3425 }
3426
3427
3428 static void interpret_otherinformation_field(ZOOM_connection c,
3429                                              Z_OtherInformation *ui)
3430 {
3431     int i;
3432     for (i = 0; i < ui->num_elements; i++)
3433     {
3434         Z_OtherInformationUnit *unit = ui->list[i];
3435         if (unit->which == Z_OtherInfo_externallyDefinedInfo &&
3436             unit->information.externallyDefinedInfo &&
3437             unit->information.externallyDefinedInfo->which ==
3438             Z_External_diag1)
3439         {
3440             interpret_init_diag(c, unit->information.externallyDefinedInfo->u.diag1);
3441         }
3442     }
3443 }
3444
3445 static void recv_apdu(ZOOM_connection c, Z_APDU *apdu)
3446 {
3447     Z_InitResponse *initrs;
3448
3449     c->mask = 0;
3450     yaz_log(log_details, "%p recv_apdu apdu->which=%d", c, apdu->which);
3451     switch(apdu->which)
3452     {
3453     case Z_APDU_initResponse:
3454         yaz_log(log_api, "%p recv_apd: Received Init response", c);
3455         initrs = apdu->u.initResponse;
3456         ZOOM_connection_option_set(c, "serverImplementationId",
3457                                    initrs->implementationId ?
3458                                    initrs->implementationId : "");
3459         ZOOM_connection_option_set(c, "serverImplementationName",
3460                                    initrs->implementationName ?
3461                                    initrs->implementationName : "");
3462         ZOOM_connection_option_set(c, "serverImplementationVersion",
3463                                    initrs->implementationVersion ?
3464                                    initrs->implementationVersion : "");
3465         /* Set the three old options too, for old applications */
3466         ZOOM_connection_option_set(c, "targetImplementationId",
3467                                    initrs->implementationId ?
3468                                    initrs->implementationId : "");
3469         ZOOM_connection_option_set(c, "targetImplementationName",
3470                                    initrs->implementationName ?
3471                                    initrs->implementationName : "");
3472         ZOOM_connection_option_set(c, "targetImplementationVersion",
3473                                    initrs->implementationVersion ?
3474                                    initrs->implementationVersion : "");
3475         if (!*initrs->result)
3476         {
3477             Z_External *uif = initrs->userInformationField;
3478
3479             set_ZOOM_error(c, ZOOM_ERROR_INIT, 0); /* default error */
3480
3481             if (uif && uif->which == Z_External_userInfo1)
3482                 interpret_otherinformation_field(c, uif->u.userInfo1);
3483         }
3484         else
3485         {
3486             char *cookie =
3487                 yaz_oi_get_string_oidval(&apdu->u.initResponse->otherInfo,
3488                                          VAL_COOKIE, 1, 0);
3489             xfree(c->cookie_in);
3490             c->cookie_in = 0;
3491             if (cookie)
3492                 c->cookie_in = xstrdup(cookie);
3493             if (ODR_MASK_GET(initrs->options, Z_Options_namedResultSets) &&
3494                 ODR_MASK_GET(initrs->protocolVersion, Z_ProtocolVersion_3))
3495                 c->support_named_resultsets = 1;
3496             if (c->tasks)
3497             {
3498                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
3499                 ZOOM_connection_remove_task(c);
3500             }
3501             ZOOM_connection_exec_task(c);
3502         }
3503         if (ODR_MASK_GET(initrs->options, Z_Options_negotiationModel))
3504         {
3505             NMEM tmpmem = nmem_create();
3506             Z_CharSetandLanguageNegotiation *p =
3507                 yaz_get_charneg_record(initrs->otherInfo);
3508
3509             if (p)
3510             {
3511                 char *charset = NULL, *lang = NULL;
3512                 int sel;
3513
3514                 yaz_get_response_charneg(tmpmem, p, &charset, &lang, &sel);
3515                 yaz_log(log_details, "%p recv_apdu target accepted: "
3516                         "charset %s, language %s, select %d",
3517                         c,
3518                         charset ? charset : "none", lang ? lang : "none", sel);
3519                 if (charset)
3520                     ZOOM_connection_option_set(c, "negotiation-charset",
3521                                                charset);
3522                 if (lang)
3523                     ZOOM_connection_option_set(c, "negotiation-lang",
3524                                                lang);
3525
3526                 ZOOM_connection_option_set(
3527                     c,  "negotiation-charset-in-effect-for-records",
3528                     (sel != 0) ? "1" : "0");
3529                 nmem_destroy(tmpmem);
3530             }
3531         }
3532         break;
3533     case Z_APDU_searchResponse:
3534         yaz_log(log_api, "%p recv_apdu Search response", c);
3535         handle_search_response(c, apdu->u.searchResponse);
3536         if (send_sort_present(c) == zoom_complete)
3537             ZOOM_connection_remove_task(c);
3538         break;
3539     case Z_APDU_presentResponse:
3540         yaz_log(log_api, "%p recv_apdu Present response", c);
3541         handle_present_response(c, apdu->u.presentResponse);
3542         if (send_present(c) == zoom_complete)
3543             ZOOM_connection_remove_task(c);
3544         break;
3545     case Z_APDU_sortResponse:
3546         yaz_log(log_api, "%p recv_apdu Sort response", c);
3547         sort_response(c, apdu->u.sortResponse);
3548         if (send_present(c) == zoom_complete)
3549             ZOOM_connection_remove_task(c);
3550         break;
3551     case Z_APDU_scanResponse:
3552         yaz_log(log_api, "%p recv_apdu Scan response", c);
3553         scan_response(c, apdu->u.scanResponse);
3554         ZOOM_connection_remove_task(c);
3555         break;
3556     case Z_APDU_extendedServicesResponse:
3557         yaz_log(log_api, "%p recv_apdu Extended Services response", c);
3558         es_response(c, apdu->u.extendedServicesResponse);
3559         ZOOM_connection_remove_task(c);
3560         break;
3561     case Z_APDU_close:
3562         yaz_log(log_api, "%p recv_apdu Close PDU", c);
3563         if (!ZOOM_test_reconnect(c))
3564         {
3565             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3566             do_close(c);
3567         }
3568         break;
3569     default:
3570         yaz_log(log_api, "%p Received unknown PDU", c);
3571         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3572         do_close(c);
3573     }
3574 }
3575
3576 #if YAZ_HAVE_XML2
3577 static void handle_srw_response(ZOOM_connection c,
3578                                 Z_SRW_searchRetrieveResponse *res)
3579 {
3580     ZOOM_resultset resultset = 0;
3581     int i;
3582     NMEM nmem;
3583     ZOOM_Event event;
3584     int *start;
3585     const char *syntax, *elementSetName;
3586
3587     if (!c->tasks)
3588         return;
3589
3590     switch(c->tasks->which)
3591     {
3592     case ZOOM_TASK_SEARCH:
3593         resultset = c->tasks->u.search.resultset;
3594         start = &c->tasks->u.search.start;
3595         syntax = c->tasks->u.search.syntax;
3596         elementSetName = c->tasks->u.search.elementSetName;
3597         break;
3598     case ZOOM_TASK_RETRIEVE:
3599         resultset = c->tasks->u.retrieve.resultset;
3600         start = &c->tasks->u.retrieve.start;
3601         syntax = c->tasks->u.retrieve.syntax;
3602         elementSetName = c->tasks->u.retrieve.elementSetName;
3603         break;
3604     default:
3605         return;
3606     }
3607     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
3608     ZOOM_connection_put_event(c, event);
3609
3610     resultset->size = 0;
3611
3612     yaz_log(log_details, "%p handle_srw_response got SRW response OK", c);
3613
3614     if (res->numberOfRecords)
3615         resultset->size = *res->numberOfRecords;
3616
3617     for (i = 0; i<res->num_records; i++)
3618     {
3619         int pos;
3620
3621         Z_NamePlusRecord *npr = (Z_NamePlusRecord *)
3622             odr_malloc(c->odr_in, sizeof(Z_NamePlusRecord));
3623
3624         if (res->records[i].recordPosition &&
3625             *res->records[i].recordPosition > 0)
3626             pos = *res->records[i].recordPosition - 1;
3627         else
3628             pos = *start + i;
3629
3630         npr->databaseName = 0;
3631         npr->which = Z_NamePlusRecord_databaseRecord;
3632         npr->u.databaseRecord = (Z_External *)
3633             odr_malloc(c->odr_in, sizeof(Z_External));
3634         npr->u.databaseRecord->descriptor = 0;
3635         npr->u.databaseRecord->direct_reference =
3636             yaz_oidval_to_z3950oid(c->odr_in, CLASS_RECSYN, VAL_TEXT_XML);
3637         npr->u.databaseRecord->which = Z_External_octet;
3638
3639         npr->u.databaseRecord->u.octet_aligned = (Odr_oct *)
3640             odr_malloc(c->odr_in, sizeof(Odr_oct));
3641         npr->u.databaseRecord->u.octet_aligned->buf = (unsigned char*)
3642             res->records[i].recordData_buf;
3643         npr->u.databaseRecord->u.octet_aligned->len =
3644             npr->u.databaseRecord->u.octet_aligned->size =
3645             res->records[i].recordData_len;
3646         record_cache_add(resultset, npr, pos, syntax, elementSetName);
3647     }
3648     if (res->num_diagnostics > 0)
3649     {
3650         const char *uri = res->diagnostics[0].uri;
3651         if (uri)
3652         {
3653             int code = 0;
3654             const char *cp;
3655             if ((cp = strrchr(uri, '/')))
3656                 code = atoi(cp+1);
3657             set_dset_error(c, code, uri,
3658                            res->diagnostics[0].details, 0);
3659         }
3660     }
3661     nmem = odr_extract_mem(c->odr_in);
3662     nmem_transfer(resultset->odr->mem, nmem);
3663     nmem_destroy(nmem);
3664 }
3665 #endif
3666
3667 #if YAZ_HAVE_XML2
3668 static void handle_http(ZOOM_connection c, Z_HTTP_Response *hres)
3669 {
3670     int ret = -1;
3671     const char *content_type = z_HTTP_header_lookup(hres->headers,
3672                                                     "Content-Type");
3673     const char *connection_head = z_HTTP_header_lookup(hres->headers,
3674                                                        "Connection");
3675     c->mask = 0;
3676     yaz_log(log_details, "%p handle_http", c);
3677
3678     if (content_type && !yaz_strcmp_del("text/xml", content_type, "; "))
3679     {
3680         Z_SOAP *soap_package = 0;
3681         ODR o = c->odr_in;
3682         Z_SOAP_Handler soap_handlers[2] = {
3683             {"http://www.loc.gov/zing/srw/", 0,
3684              (Z_SOAP_fun) yaz_srw_codec},
3685             {0, 0, 0}
3686         };
3687         ret = z_soap_codec(o, &soap_package,
3688                            &hres->content_buf, &hres->content_len,
3689                            soap_handlers);
3690         if (!ret && soap_package->which == Z_SOAP_generic &&
3691             soap_package->u.generic->no == 0)
3692         {
3693             Z_SRW_PDU *sr = (Z_SRW_PDU*) soap_package->u.generic->p;
3694             if (sr->which == Z_SRW_searchRetrieve_response)
3695                 handle_srw_response(c, sr->u.response);
3696             else
3697                 ret = -1;
3698         }
3699         else if (!ret && (soap_package->which == Z_SOAP_fault
3700                           || soap_package->which == Z_SOAP_error))
3701         {
3702             set_HTTP_error(c, hres->code,
3703                            soap_package->u.fault->fault_code,
3704                            soap_package->u.fault->fault_string);
3705         }
3706         else
3707             ret = -1;
3708     }
3709     if (ret)
3710     {
3711         if (hres->code != 200)
3712             set_HTTP_error(c, hres->code, 0, 0);
3713         else
3714             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3715         do_close(c);
3716     }
3717     ZOOM_connection_remove_task(c);
3718     if (!strcmp(hres->version, "1.0"))
3719     {
3720         /* HTTP 1.0: only if Keep-Alive we stay alive.. */
3721         if (!connection_head || strcmp(connection_head, "Keep-Alive"))
3722             do_close(c);
3723     }
3724     else
3725     {
3726         /* HTTP 1.1: only if no close we stay alive .. */
3727         if (connection_head && !strcmp(connection_head, "close"))
3728             do_close(c);
3729     }
3730 }
3731 #endif
3732
3733 static int do_read(ZOOM_connection c)
3734 {
3735     int r, more;
3736     ZOOM_Event event;
3737
3738     event = ZOOM_Event_create(ZOOM_EVENT_RECV_DATA);
3739     ZOOM_connection_put_event(c, event);
3740
3741     r = cs_get(c->cs, &c->buf_in, &c->len_in);
3742     more = cs_more(c->cs);
3743     yaz_log(log_details, "%p do_read len=%d more=%d", c, r, more);
3744     if (r == 1)
3745         return 0;
3746     if (r <= 0)
3747     {
3748         if (ZOOM_test_reconnect(c))
3749         {
3750             yaz_log(log_details, "%p do_read reconnect read", c);
3751         }
3752         else
3753         {
3754             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3755             do_close(c);
3756         }
3757     }
3758     else
3759     {
3760         Z_GDU *gdu;
3761         ZOOM_Event event;
3762
3763         odr_reset(c->odr_in);
3764         odr_setbuf(c->odr_in, c->buf_in, r, 0);
3765         event = ZOOM_Event_create(ZOOM_EVENT_RECV_APDU);
3766         ZOOM_connection_put_event(c, event);
3767
3768         if (!z_GDU(c->odr_in, &gdu, 0, 0))
3769         {
3770             int x;
3771             int err = odr_geterrorx(c->odr_in, &x);
3772             char msg[60];
3773             const char *element = odr_getelement(c->odr_in);
3774             sprintf(msg, "ODR code %d:%d element=%-20s",
3775                     err, x, element ? element : "<unknown>");
3776             set_ZOOM_error(c, ZOOM_ERROR_DECODE, msg);
3777             do_close(c);
3778         }
3779         else if (gdu->which == Z_GDU_Z3950)
3780             recv_apdu(c, gdu->u.z3950);
3781         else if (gdu->which == Z_GDU_HTTP_Response)
3782         {
3783 #if YAZ_HAVE_XML2
3784             handle_http(c, gdu->u.HTTP_Response);
3785 #else
3786             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3787             do_close(c);
3788 #endif
3789         }
3790         c->reconnect_ok = 0;
3791     }
3792     return 1;
3793 }
3794
3795 static zoom_ret do_write_ex(ZOOM_connection c, char *buf_out, int len_out)
3796 {
3797     int r;
3798     ZOOM_Event event;
3799
3800     event = ZOOM_Event_create(ZOOM_EVENT_SEND_DATA);
3801     ZOOM_connection_put_event(c, event);
3802
3803     yaz_log(log_details, "%p do_write_ex len=%d", c, len_out);
3804     if ((r = cs_put(c->cs, buf_out, len_out)) < 0)
3805     {
3806         yaz_log(log_details, "%p do_write_ex write failed", c);
3807         if (ZOOM_test_reconnect(c))
3808         {
3809             return zoom_pending;
3810         }
3811         if (c->state == STATE_CONNECTING)
3812             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3813         else
3814             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
3815         do_close(c);
3816         return zoom_complete;
3817     }
3818     else if (r == 1)
3819     {
3820         c->mask = ZOOM_SELECT_EXCEPT;
3821         if (c->cs->io_pending & CS_WANT_WRITE)
3822             c->mask += ZOOM_SELECT_WRITE;
3823         if (c->cs->io_pending & CS_WANT_READ)
3824             c->mask += ZOOM_SELECT_READ;
3825         yaz_log(log_details, "%p do_write_ex write incomplete mask=%d",
3826                 c, c->mask);
3827     }
3828     else
3829     {
3830         c->mask = ZOOM_SELECT_READ|ZOOM_SELECT_EXCEPT;
3831         yaz_log(log_details, "%p do_write_ex write complete mask=%d",
3832                 c, c->mask);
3833     }
3834     return zoom_pending;
3835 }
3836
3837 static zoom_ret do_write(ZOOM_connection c)
3838 {
3839     return do_write_ex(c, c->buf_out, c->len_out);
3840 }
3841
3842
3843 ZOOM_API(const char *)
3844     ZOOM_connection_option_get(ZOOM_connection c, const char *key)
3845 {
3846     return ZOOM_options_get(c->options, key);
3847 }
3848
3849 ZOOM_API(const char *)
3850     ZOOM_connection_option_getl(ZOOM_connection c, const char *key, int *lenp)
3851 {
3852     return ZOOM_options_getl(c->options, key, lenp);
3853 }
3854
3855 ZOOM_API(void)
3856     ZOOM_connection_option_set(ZOOM_connection c, const char *key,
3857                                const char *val)
3858 {
3859     ZOOM_options_set(c->options, key, val);
3860 }
3861
3862 ZOOM_API(void)
3863     ZOOM_connection_option_setl(ZOOM_connection c, const char *key,
3864                                 const char *val, int len)
3865 {
3866     ZOOM_options_setl(c->options, key, val, len);
3867 }
3868
3869 ZOOM_API(const char *)
3870     ZOOM_resultset_option_get(ZOOM_resultset r, const char *key)
3871 {
3872     return ZOOM_options_get(r->options, key);
3873 }
3874
3875 ZOOM_API(void)
3876     ZOOM_resultset_option_set(ZOOM_resultset r, const char *key,
3877                               const char *val)
3878 {
3879     ZOOM_options_set(r->options, key, val);
3880 }
3881
3882
3883 ZOOM_API(int)
3884     ZOOM_connection_errcode(ZOOM_connection c)
3885 {
3886     return ZOOM_connection_error(c, 0, 0);
3887 }
3888
3889 ZOOM_API(const char *)
3890     ZOOM_connection_errmsg(ZOOM_connection c)
3891 {
3892     const char *msg;
3893     ZOOM_connection_error(c, &msg, 0);
3894     return msg;
3895 }
3896
3897 ZOOM_API(const char *)
3898     ZOOM_connection_addinfo(ZOOM_connection c)
3899 {
3900     const char *addinfo;
3901     ZOOM_connection_error(c, 0, &addinfo);
3902     return addinfo;
3903 }
3904
3905 ZOOM_API(const char *)
3906     ZOOM_connection_diagset(ZOOM_connection c)
3907 {
3908     const char *diagset;
3909     ZOOM_connection_error_x(c, 0, 0, &diagset);
3910     return diagset;
3911 }
3912
3913 ZOOM_API(const char *)
3914     ZOOM_diag_str(int error)
3915 {
3916     switch (error)
3917     {
3918     case ZOOM_ERROR_NONE:
3919         return "No error";
3920     case ZOOM_ERROR_CONNECT:
3921         return "Connect failed";
3922     case ZOOM_ERROR_MEMORY:
3923         return "Out of memory";
3924     case ZOOM_ERROR_ENCODE:
3925         return "Encoding failed";
3926     case ZOOM_ERROR_DECODE:
3927         return "Decoding failed";
3928     case ZOOM_ERROR_CONNECTION_LOST:
3929         return "Connection lost";
3930     case ZOOM_ERROR_INIT:
3931         return "Init rejected";
3932     case ZOOM_ERROR_INTERNAL:
3933         return "Internal failure";
3934     case ZOOM_ERROR_TIMEOUT:
3935         return "Timeout";
3936     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
3937         return "Unsupported protocol";
3938     case ZOOM_ERROR_UNSUPPORTED_QUERY:
3939         return "Unsupported query type";
3940     case ZOOM_ERROR_INVALID_QUERY:
3941         return "Invalid query";
3942     case ZOOM_ERROR_CQL_PARSE:
3943         return "CQL parsing error";
3944     case ZOOM_ERROR_CQL_TRANSFORM:
3945         return "CQL transformation error";
3946     case ZOOM_ERROR_CCL_CONFIG:
3947         return "CCL configuration error";
3948     case ZOOM_ERROR_CCL_PARSE:
3949         return "CCL parsing error";
3950     default:
3951         return diagbib1_str(error);
3952     }
3953 }
3954
3955 ZOOM_API(int)
3956     ZOOM_connection_error_x(ZOOM_connection c, const char **cp,
3957                             const char **addinfo, const char **diagset)
3958 {
3959     int error = c->error;
3960     if (cp)
3961     {
3962         if (!c->diagset || !strcmp(c->diagset, "ZOOM"))
3963             *cp = ZOOM_diag_str(error);
3964         else if (!strcmp(c->diagset, "HTTP"))
3965             *cp = z_HTTP_errmsg(c->error);
3966         else if (!strcmp(c->diagset, "Bib-1"))
3967             *cp = ZOOM_diag_str(error);
3968         else if (!strcmp(c->diagset, "info:srw/diagnostic/1"))
3969             *cp = yaz_diag_srw_str(c->error);
3970         else
3971             *cp = "Unknown error and diagnostic set";
3972     }
3973     if (addinfo)
3974         *addinfo = c->addinfo ? c->addinfo : "";
3975     if (diagset)
3976         *diagset = c->diagset ? c->diagset : "";
3977     return c->error;
3978 }
3979
3980 ZOOM_API(int)
3981     ZOOM_connection_error(ZOOM_connection c, const char **cp,
3982                           const char **addinfo)
3983 {
3984     return ZOOM_connection_error_x(c, cp, addinfo, 0);
3985 }
3986
3987 static void ZOOM_connection_do_io(ZOOM_connection c, int mask)
3988 {
3989     ZOOM_Event event = 0;
3990     int r = cs_look(c->cs);
3991     yaz_log(log_details, "%p ZOOM_connection_do_io mask=%d cs_look=%d",
3992             c, mask, r);
3993
3994     if (r == CS_NONE)
3995     {
3996         event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
3997         set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
3998         do_close(c);
3999         ZOOM_connection_put_event(c, event);
4000     }
4001     else if (r == CS_CONNECT)
4002     {
4003         int ret = ret = cs_rcvconnect(c->cs);
4004         yaz_log(log_details, "%p ZOOM_connection_do_io "
4005                 "cs_rcvconnect returned %d", c, ret);
4006         if (ret == 1)
4007         {
4008             c->mask = ZOOM_SELECT_EXCEPT;
4009             if (c->cs->io_pending & CS_WANT_WRITE)
4010                 c->mask += ZOOM_SELECT_WRITE;
4011             if (c->cs->io_pending & CS_WANT_READ)
4012                 c->mask += ZOOM_SELECT_READ;
4013         }
4014         else if (ret == 0)
4015         {
4016             event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
4017             ZOOM_connection_put_event(c, event);
4018             get_cert(c);
4019             if (c->proto == PROTO_Z3950)
4020                 ZOOM_connection_send_init(c);
4021             else
4022             {
4023                 /* no init request for SRW .. */
4024                 assert(c->tasks->which == ZOOM_TASK_CONNECT);
4025                 ZOOM_connection_remove_task(c);
4026                 c->mask = 0;
4027                 ZOOM_connection_exec_task(c);
4028             }
4029             c->state = STATE_ESTABLISHED;
4030         }
4031         else
4032         {
4033             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
4034             do_close(c);
4035         }
4036     }
4037     else
4038     {
4039         if (mask & ZOOM_SELECT_EXCEPT)
4040         {
4041             if (ZOOM_test_reconnect(c))
4042             {
4043                 event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
4044                 ZOOM_connection_put_event(c, event);
4045             }
4046             else
4047             {
4048                 set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
4049                 do_close(c);
4050             }
4051             return;
4052         }
4053         if (mask & ZOOM_SELECT_READ)
4054             do_read(c);
4055         if (c->cs && (mask & ZOOM_SELECT_WRITE))
4056             do_write(c);
4057     }
4058 }
4059
4060 ZOOM_API(int)
4061     ZOOM_connection_last_event(ZOOM_connection cs)
4062 {
4063     if (!cs)
4064         return ZOOM_EVENT_NONE;
4065     return cs->last_event;
4066 }
4067
4068 ZOOM_API(int)
4069     ZOOM_event(int no, ZOOM_connection *cs)
4070 {
4071     int timeout = 30;      /* default timeout in seconds */
4072     int timeout_set = 0;   /* whether it was overriden at all */
4073 #if HAVE_SYS_POLL_H
4074     struct pollfd pollfds[1024];
4075     ZOOM_connection poll_cs[1024];
4076 #else
4077     struct timeval tv;
4078     fd_set input, output, except;
4079 #endif
4080     int i, r, nfds;
4081     int max_fd = 0;
4082
4083     yaz_log(log_details, "ZOOM_event(no=%d,cs=%p)", no, cs);
4084
4085     for (i = 0; i<no; i++)
4086     {
4087         ZOOM_connection c = cs[i];
4088         ZOOM_Event event;
4089
4090 #if 0
4091         if (c)
4092             ZOOM_connection_show_tasks(c);
4093 #endif
4094
4095         if (c && (event = ZOOM_connection_get_event(c)))
4096         {
4097             ZOOM_Event_destroy(event);
4098             return i+1;
4099         }
4100     }
4101     for (i = 0; i<no; i++)
4102     {
4103         ZOOM_connection c = cs[i];
4104         if (c)
4105         {
4106             ZOOM_Event event;
4107             ZOOM_connection_exec_task(c);
4108             if ((event = ZOOM_connection_get_event(c)))
4109             {
4110                 ZOOM_Event_destroy(event);
4111                 return i+1;
4112             }
4113         }
4114     }
4115 #if HAVE_SYS_POLL_H
4116
4117 #else
4118     FD_ZERO(&input);
4119     FD_ZERO(&output);
4120     FD_ZERO(&except);
4121 #endif
4122     nfds = 0;
4123     for (i = 0; i<no; i++)
4124     {
4125         ZOOM_connection c = cs[i];
4126         int fd, mask;
4127         int this_timeout;
4128
4129         if (!c)
4130             continue;
4131         fd = z3950_connection_socket(c);
4132         mask = z3950_connection_mask(c);
4133
4134         if (fd == -1)
4135             continue;
4136         if (max_fd < fd)
4137             max_fd = fd;
4138
4139         /* -1 is used for indefinite timeout (no timeout), so -2 here. */
4140         this_timeout = ZOOM_options_get_int(c->options, "timeout", -2);
4141         if (this_timeout != -2)
4142         {
4143             /* ensure the minimum timeout is used */
4144             if (!timeout_set)
4145                 timeout = this_timeout;
4146             else if (this_timeout != -1 && this_timeout < timeout)
4147                 timeout = this_timeout;
4148             timeout_set = 1;
4149         }
4150 #if HAVE_SYS_POLL_H
4151         if (mask)
4152         {
4153             short poll_events = 0;
4154
4155             if (mask & ZOOM_SELECT_READ)
4156                 poll_events += POLLIN;
4157             if (mask & ZOOM_SELECT_WRITE)
4158                 poll_events += POLLOUT;
4159             if (mask & ZOOM_SELECT_EXCEPT)
4160                 poll_events += POLLERR;
4161             pollfds[nfds].fd = fd;
4162             pollfds[nfds].events = poll_events;
4163             pollfds[nfds].revents = 0;
4164             poll_cs[nfds] = c;
4165             nfds++;
4166         }
4167 #else
4168         if (mask & ZOOM_SELECT_READ)
4169         {
4170             FD_SET(fd, &input);
4171             nfds++;
4172         }
4173         if (mask & ZOOM_SELECT_WRITE)
4174         {
4175             FD_SET(fd, &output);
4176             nfds++;
4177         }
4178         if (mask & ZOOM_SELECT_EXCEPT)
4179         {
4180             FD_SET(fd, &except);
4181             nfds++;
4182         }
4183 #endif
4184     }
4185     if (!nfds)
4186         return 0;
4187
4188 #if HAVE_SYS_POLL_H
4189     r = poll(pollfds, nfds, (timeout == -1 ? -1 : timeout * 1000));
4190     for (i = 0; i<nfds; i++)
4191     {
4192         ZOOM_connection c = poll_cs[i];
4193         if (r && c->mask)
4194         {
4195             int mask = 0;
4196             if (pollfds[i].revents & POLLIN)
4197                 mask += ZOOM_SELECT_READ;
4198             if (pollfds[i].revents & POLLOUT)
4199                 mask += ZOOM_SELECT_WRITE;
4200             if (pollfds[i].revents & POLLERR)
4201                 mask += ZOOM_SELECT_EXCEPT;
4202             if (mask)
4203                 ZOOM_connection_do_io(c, mask);
4204         }
4205         else if (r == 0 && c->mask)
4206         {
4207             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
4208             /* timeout and this connection was waiting */
4209             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
4210             do_close(c);
4211             ZOOM_connection_put_event(c, event);
4212         }
4213     }
4214 #else
4215     tv.tv_sec = timeout;
4216     tv.tv_usec = 0;
4217     r = select(max_fd+1, &input, &output, &except, (timeout == -1 ? 0 : &tv));
4218     for (i = 0; i<no; i++)
4219     {
4220         ZOOM_connection c = cs[i];
4221         int fd, mask;
4222
4223         if (!c)
4224             continue;
4225         fd = z3950_connection_socket(c);
4226         mask = 0;
4227         if (r && c->mask)
4228         {
4229             /* no timeout and real socket */
4230             if (FD_ISSET(fd, &input))
4231                 mask += ZOOM_SELECT_READ;
4232             if (FD_ISSET(fd, &output))
4233                 mask += ZOOM_SELECT_WRITE;
4234             if (FD_ISSET(fd, &except))
4235                 mask += ZOOM_SELECT_EXCEPT;
4236             if (mask)
4237                 ZOOM_connection_do_io(c, mask);
4238         }
4239         if (r == 0 && c->mask)
4240         {
4241             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
4242             /* timeout and this connection was waiting */
4243             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
4244             do_close(c);
4245             ZOOM_connection_put_event(c, event);
4246         }
4247     }
4248 #endif
4249     for (i = 0; i<no; i++)
4250     {
4251         ZOOM_connection c = cs[i];
4252         ZOOM_Event event;
4253         if (c && (event = ZOOM_connection_get_event(c)))
4254         {
4255             ZOOM_Event_destroy(event);
4256             return i+1;
4257         }
4258     }
4259     return 0;
4260 }
4261
4262
4263 /*
4264  * Returns an xmalloc()d string containing RPN that corresponds to the
4265  * CQL passed in.  On error, sets the Connection object's error state
4266  * and returns a null pointer.
4267  * ### We could cache CQL parser and/or transformer in Connection.
4268  */
4269 static char *cql2pqf(ZOOM_connection c, const char *cql)
4270 {
4271     CQL_parser parser;
4272     int error;
4273     struct cql_node *node;
4274     const char *cqlfile;
4275     static cql_transform_t trans;
4276     char pqfbuf[512];
4277
4278     parser = cql_parser_create();
4279     if ((error = cql_parser_string(parser, cql)) != 0) {
4280         cql_parser_destroy(parser);
4281         set_ZOOM_error(c, ZOOM_ERROR_CQL_PARSE, cql);
4282         return 0;
4283     }
4284
4285     node = cql_parser_result(parser);
4286     /* ### Do not call cql_parser_destroy() yet: it destroys `node'! */
4287
4288     cqlfile = ZOOM_connection_option_get(c, "cqlfile");
4289     if (cqlfile == 0) {
4290         cql_parser_destroy(parser);
4291         cql_node_destroy(node);
4292         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, "no CQL transform file");
4293         return 0;
4294     }
4295
4296     if ((trans = cql_transform_open_fname(cqlfile)) == 0) {
4297         char buf[512];
4298         cql_parser_destroy(parser);
4299         cql_node_destroy(node);
4300         sprintf(buf, "can't open CQL transform file '%.200s': %.200s",
4301                 cqlfile, strerror(errno));
4302         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4303         return 0;
4304     }
4305
4306     error = cql_transform_buf(trans, node, pqfbuf, sizeof pqfbuf);
4307     cql_parser_destroy(parser);
4308     cql_node_destroy(node);
4309     if (error != 0) {
4310         char buf[512];
4311         const char *addinfo;
4312         error = cql_transform_error(trans, &addinfo);
4313         cql_transform_close(trans);
4314         sprintf(buf, "%.200s (addinfo=%.200s)", cql_strerror(error), addinfo);
4315         set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
4316         return 0;
4317     }
4318
4319     cql_transform_close(trans);
4320     return xstrdup(pqfbuf);
4321 }
4322
4323 /*
4324  * Local variables:
4325  * c-basic-offset: 4
4326  * indent-tabs-mode: nil
4327  * End:
4328  * vim: shiftwidth=4 tabstop=8 expandtab
4329  */
4330