SimpleServer.xs

   1 /*
   2  * $Id: SimpleServer.xs,v 1.52 2006-07-26 01:08:44 mike Exp $
   3  * ----------------------------------------------------------------------
   4  *
   5  * Copyright (c) 2000-2004, Index Data.
   6  *
   7  * Permission to use, copy, modify, distribute, and sell this software and
   8  * its documentation, in whole or in part, for any purpose, is hereby granted,
   9  * provided that:
  10  *
  11  * 1. This copyright and permission notice appear in all copies of the
  12  * software and its documentation. Notices of copyright or attribution
  13  * which appear at the beginning of any file must remain unchanged.
  14  *
  15  * 2. The name of Index Data or the individual authors may not be used to
  16  * endorse or promote products derived from this software without specific
  17  * prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED "AS IS" AND WITHOUT WARRANTY OF ANY KIND,
  20  * EXPRESS, IMPLIED, OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
  21  * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
  22  * IN NO EVENT SHALL INDEX DATA BE LIABLE FOR ANY SPECIAL, INCIDENTAL,
  23  * INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES
  24  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER OR
  25  * NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
  26  * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  27  * OF THIS SOFTWARE.
  28  */
  29
  30 #include "EXTERN.h"
  31 #include "perl.h"
  32 #include "proto.h"
  33 #include "embed.h"
  34 #include "XSUB.h"
  35 #include <yaz/backend.h>
  36 #include <yaz/log.h>
  37 #include <yaz/wrbuf.h>
  38 #include <stdio.h>
  39 #ifdef WIN32
  40 #else
  41 #include <unistd.h>
  42 #endif
  43 #include <stdlib.h>
  44 #include <ctype.h>
  45 #define GRS_MAX_FIELDS 500
  46 #ifdef ASN_COMPILED
  47 #include <yaz/ill.h>
  48 #endif
  49 #ifndef sv_undef                /* To fix the problem with Perl 5.6.0 */
  50 #define sv_undef PL_sv_undef
  51 #endif
  52
  53 NMEM_MUTEX simpleserver_mutex;
  54
  55 typedef struct {
  56         SV *handle;
  57
  58         SV *init_ref;
  59         SV *close_ref;
  60         SV *sort_ref;
  61         SV *search_ref;
  62         SV *fetch_ref;
  63         SV *present_ref;
  64         SV *esrequest_ref;
  65         SV *delete_ref;
  66         SV *scan_ref;
  67         SV *explain_ref;
  68         NMEM nmem;
  69         int stop_flag;  /* is used to stop server prematurely .. */
  70 } Zfront_handle;
  71
  72 #define ENABLE_STOP_SERVER 0
  73
  74 SV *init_ref = NULL;
  75 SV *close_ref = NULL;
  76 SV *sort_ref = NULL;
  77 SV *search_ref = NULL;
  78 SV *fetch_ref = NULL;
  79 SV *present_ref = NULL;
  80 SV *esrequest_ref = NULL;
  81 SV *delete_ref = NULL;
  82 SV *scan_ref = NULL;
  83 SV *explain_ref = NULL;
  84 PerlInterpreter *root_perl_context;
  85 int MAX_OID = 15;
  86
  87 #define GRS_BUF_SIZE 512
  88
  89 CV * simpleserver_sv2cv(SV *handler) {
  90     STRLEN len;
  91     char *buf;
  92
  93     if (SvPOK(handler)) {
  94         CV *ret;
  95         buf = SvPV( handler, len);
  96         if ( !( ret = perl_get_cv(buf, FALSE ) ) ) {
  97             fprintf( stderr, "simpleserver_sv2cv: No such handler '%s'\n\n", buf );
  98             exit(1);
  99         }
 100
 101         return ret;
 102     } else {
 103         return (CV *) handler;
 104     }
 105 }
 106
 107 /* debugging routine to check for destruction of Perl interpreters */
 108 #ifdef USE_ITHREADS
 109 void tst_clones(void)
 110 {
 111     int i;
 112     PerlInterpreter *parent = PERL_GET_CONTEXT;
 113     for (i = 0; i<5000; i++)
 114     {
 115         PerlInterpreter *perl_interp;
 116
 117         PERL_SET_CONTEXT(parent);
 118         PL_perl_destruct_level = 2;
 119         perl_interp = perl_clone(parent, CLONEf_CLONE_HOST);
 120         PL_perl_destruct_level = 2;
 121         PERL_SET_CONTEXT(perl_interp);
 122         perl_destruct(perl_interp);
 123         perl_free(perl_interp);
 124     }
 125     exit (0);
 126 }
 127 #endif
 128
 129 int simpleserver_clone(void) {
 130 #ifdef USE_ITHREADS
 131      nmem_mutex_enter(simpleserver_mutex);
 132      if (1)
 133      {
 134          PerlInterpreter *current = PERL_GET_CONTEXT;
 135
 136          /* if current is unset, then we're in a new thread with
 137           * no Perl interpreter for it. So we must create one .
 138           * This will only happen when threaded is used..
 139           */
 140          if (!current) {
 141              PerlInterpreter *perl_interp;
 142              PERL_SET_CONTEXT( root_perl_context );
 143              perl_interp = perl_clone(root_perl_context, CLONEf_CLONE_HOST);
 144              PERL_SET_CONTEXT( perl_interp );
 145          }
 146      }
 147      nmem_mutex_leave(simpleserver_mutex);
 148 #endif
 149      return 0;
 150 }
 151
 152
 153 void simpleserver_free(void) {
 154     nmem_mutex_enter(simpleserver_mutex);
 155     if (1)
 156     {
 157         PerlInterpreter *current_interp = PERL_GET_CONTEXT;
 158
 159         /* If current Perl Interp is different from root interp, then
 160          * we're in threaded mode and we must destroy..
 161          */
 162         if (current_interp != root_perl_context) {
 163             PL_perl_destruct_level = 2;
 164             PERL_SET_CONTEXT(current_interp);
 165             perl_destruct(current_interp);
 166             perl_free(current_interp);
 167         }
 168     }
 169     nmem_mutex_leave(simpleserver_mutex);
 170 }
 171
 172
 173 Z_GenericRecord *read_grs1(char *str, ODR o)
 174 {
 175         int type, ivalue;
 176         char line[GRS_BUF_SIZE+1], *buf, *ptr, *original;
 177         char value[GRS_BUF_SIZE+1];
 178         Z_GenericRecord *r = 0;
 179
 180         original = str;
 181         r = (Z_GenericRecord *)odr_malloc(o, sizeof(*r));
 182         r->elements = (Z_TaggedElement **) odr_malloc(o, sizeof(Z_TaggedElement*) * GRS_MAX_FIELDS);
 183         r->num_elements = 0;
 184
 185         for (;;)
 186         {
 187                 Z_TaggedElement *t;
 188                 Z_ElementData *c;
 189                 int len;
 190
 191                 ptr = strchr(str, '\n');
 192                 if (!ptr) {
 193                         return r;
 194                 }
 195                 len = ptr - str;
 196                 if (len > GRS_BUF_SIZE) {
 197                     yaz_log(LOG_WARN, "GRS string too long - truncating (%d > %d)", len, GRS_BUF_SIZE);
 198                     len = GRS_BUF_SIZE;
 199                 }
 200                 strncpy(line, str, len);
 201                 line[len] = 0;
 202                 buf = line;
 203                 str = ptr + 1;
 204                 while (*buf && isspace(*buf))
 205                         buf++;
 206                 if (*buf == '}') {
 207                         memmove(original, str, strlen(str));
 208                         return r;
 209                 }
 210                 if (sscanf(buf, "(%d,%[^)])", &type, value) != 2)
 211                 {
 212                         yaz_log(LOG_WARN, "Bad data in '%s'", buf);
 213                         return r;
 214                 }
 215                 if (!type && *value == '0')
 216                         return r;
 217                 if (!(buf = strchr(buf, ')')))
 218                         return r;
 219                 buf++;
 220                 while (*buf && isspace(*buf))
 221                         buf++;
 222                 if (r->num_elements >= GRS_MAX_FIELDS)
 223                 {
 224                         yaz_log(LOG_WARN, "Max number of GRS-1 elements exceeded [GRS_MAX_FIELDS=%d]", GRS_MAX_FIELDS);
 225                         exit(0);
 226                 }
 227                 r->elements[r->num_elements] = t = (Z_TaggedElement *) odr_malloc(o, sizeof(Z_TaggedElement));
 228                 t->tagType = (int *)odr_malloc(o, sizeof(int));
 229                 *t->tagType = type;
 230                 t->tagValue = (Z_StringOrNumeric *)
 231                         odr_malloc(o, sizeof(Z_StringOrNumeric));
 232                 if ((ivalue = atoi(value)))
 233                 {
 234                         t->tagValue->which = Z_StringOrNumeric_numeric;
 235                         t->tagValue->u.numeric = (int *)odr_malloc(o, sizeof(int));
 236                         *t->tagValue->u.numeric = ivalue;
 237                 }
 238                 else
 239                 {
 240                         t->tagValue->which = Z_StringOrNumeric_string;
 241                         t->tagValue->u.string = (char *)odr_malloc(o, strlen(value)+1);
 242                         strcpy(t->tagValue->u.string, value);
 243                 }
 244                 t->tagOccurrence = 0;
 245                 t->metaData = 0;
 246                 t->appliedVariant = 0;
 247                 t->content = c = (Z_ElementData *)odr_malloc(o, sizeof(Z_ElementData));
 248                 if (*buf == '{')
 249                 {
 250                         c->which = Z_ElementData_subtree;
 251                         c->u.subtree = read_grs1(str, o);
 252                 }
 253                 else
 254                 {
 255                         c->which = Z_ElementData_string;
 256                         c->u.string = odr_strdup(o, buf);
 257                 }
 258                 r->num_elements++;
 259         }
 260 }
 261
 262
 263
 264
 265 static void oid2str(Odr_oid *o, WRBUF buf)
 266 {
 267     for (; *o >= 0; o++) {
 268         char ibuf[16];
 269         sprintf(ibuf, "%d", *o);
 270         wrbuf_puts(buf, ibuf);
 271         if (o[1] > 0)
 272             wrbuf_putc(buf, '.');
 273     }
 274 }
 275
 276
 277 WRBUF zquery2pquery(Z_Query *q)
 278 {
 279     WRBUF buf = wrbuf_alloc();
 280
 281     if (q->which != Z_Query_type_1 && q->which != Z_Query_type_101)
 282         return 0;
 283     yaz_rpnquery_to_wrbuf(buf, q->u.type_1);
 284     return buf;
 285 }
 286
 287
 288 /* Lifted verbatim from Net::Z3950 yazwrap/util.c */
 289 #include <stdarg.h>
 290 void fatal(char *fmt, ...)
 291 {
 292     va_list ap;
 293
 294     fprintf(stderr, "FATAL (SimpleServer): ");
 295     va_start(ap, fmt);
 296     vfprintf(stderr, fmt, ap);
 297     va_end(ap);
 298     fprintf(stderr, "\n");
 299     abort();
 300 }
 301
 302
 303 /* Lifted verbatim from Net::Z3950 yazwrap/receive.c */
 304 /*
 305  * Creates a new Perl object of type `class'; the newly-created scalar
 306  * that is a reference to the blessed thingy `referent' is returned.
 307  */
 308 static SV *newObject(char *class, SV *referent)
 309 {
 310     HV *stash;
 311     SV *sv;
 312
 313     sv = newRV_noinc((SV*) referent);
 314     stash = gv_stashpv(class, 0);
 315     if (stash == 0)
 316         fatal("attempt to create object of undefined class '%s'", class);
 317     /*assert(stash != 0);*/
 318     sv_bless(sv, stash);
 319     return sv;
 320 }
 321
 322
 323 /* Lifted verbatim from Net::Z3950 yazwrap/receive.c */
 324 static void setMember(HV *hv, char *name, SV *val)
 325 {
 326     /* We don't increment `val's reference count -- I think this is
 327      * right because it's created with a refcount of 1, and in fact
 328      * the reference via this hash is the only reference to it in
 329      * general.
 330      */
 331     if (!hv_store(hv, name, (U32) strlen(name), val, (U32) 0))
 332         fatal("couldn't store member in hash");
 333 }
 334
 335
 336 /* Lifted verbatim from Net::Z3950 yazwrap/receive.c */
 337 static SV *translateOID(Odr_oid *x)
 338 {
 339     /* Yaz represents an OID by an int array terminated by a negative
 340      * value, typically -1; we represent it as a reference to a
 341      * blessed scalar string of "."-separated elements.
 342      */
 343     char buf[1000];
 344     int i;
 345
 346     *buf = '\0';
 347     for (i = 0; x[i] >= 0; i++) {
 348         sprintf(buf + strlen(buf), "%d", (int) x[i]);
 349         if (x[i+1] >- 0)
 350             strcat(buf, ".");
 351     }
 352
 353     /*
 354      * ### We'd like to return a blessed scalar (string) here, but of
 355      *  course you can't do that in Perl: only references can be
 356      *  blessed, so we'd have to return a _reference_ to a string, and
 357      *  bless _that_.  Better to do without the blessing, I think.
 358      */
 359     if (1) {
 360         return newSVpv(buf, 0);
 361     } else {
 362         return newObject("Net::Z3950::APDU::OID", newSVpv(buf, 0));
 363     }
 364 }
 365
 366
 367 static SV *rpn2perl(Z_RPNStructure *s)
 368 {
 369     SV *sv;
 370     HV *hv;
 371     AV *av;
 372
 373     switch (s->which) {
 374     case Z_RPNStructure_simple: {
 375         Z_Operand *o = s->u.simple;
 376         Z_AttributesPlusTerm *at;
 377         if (o->which == Z_Operand_resultSetId) {
 378             SV *sv2;
 379             /* This code causes a SIGBUS on my machine, and I have no
 380                idea why.  It seems as clear as day to me */
 381             char *rsid = (char*) o->u.resultSetId;
 382             printf("Encoding resultSetId '%s'\n", rsid);
 383             sv = newObject("Net::Z3950::RPN::RSID", (SV*) (hv = newHV()));
 384             printf("Made sv=0x%lx, hv=0x%lx\n",
 385                    (unsigned long) sv ,(unsigned long) hv);
 386             sv2 = newSVpv(rsid, strlen(rsid));
 387             setMember(hv, "id", sv2);
 388             printf("Set hv{id} to 0x%lx\n", (unsigned long) sv2);
 389             return sv;
 390         }
 391         if (o->which != Z_Operand_APT)
 392             fatal("can't handle RPN simples other than APT and RSID");
 393         at = o->u.attributesPlusTerm;
 394         if (at->term->which != Z_Term_general)
 395             fatal("can't handle RPN terms other than general");
 396
 397         sv = newObject("Net::Z3950::RPN::Term", (SV*) (hv = newHV()));
 398         if (at->attributes) {
 399             int i;
 400             SV *attrs = newObject("Net::Z3950::RPN::Attributes",
 401                                   (SV*) (av = newAV()));
 402             for (i = 0; i < at->attributes->num_attributes; i++) {
 403                 Z_AttributeElement *elem = at->attributes->attributes[i];
 404                 HV *hv2;
 405                 SV *tmp = newObject("Net::Z3950::RPN::Attribute",
 406                                     (SV*) (hv2 = newHV()));
 407                 if (elem->attributeSet)
 408                     setMember(hv2, "attributeSet",
 409                               translateOID(elem->attributeSet));
 410                 setMember(hv2, "attributeType",
 411                           newSViv(*elem->attributeType));
 412                 assert(elem->which == Z_AttributeValue_numeric);
 413                 setMember(hv2, "attributeValue",
 414                           newSViv(*elem->value.numeric));
 415                 av_push(av, tmp);
 416             }
 417             setMember(hv, "attributes", attrs);
 418         }
 419         setMember(hv, "term", newSVpv((char*) at->term->u.general->buf,
 420                                       at->term->u.general->len));
 421         return sv;
 422     }
 423     case Z_RPNStructure_complex: {
 424         SV *tmp;
 425         Z_Complex *c = s->u.complex;
 426         char *type = 0;         /* vacuous assignment satisfies gcc -Wall */
 427         switch (c->roperator->which) {
 428         case Z_Operator_and:     type = "Net::Z3950::RPN::And"; break;
 429         case Z_Operator_or:      type = "Net::Z3950::RPN::Or"; break;
 430         case Z_Operator_and_not: type = "Net::Z3950::RPN::AndNot"; break;
 431         case Z_Operator_prox:    fatal("proximity not yet supported");
 432         default: fatal("unknown RPN operator %d", (int) c->roperator->which);
 433         }
 434         sv = newObject(type, (SV*) (av = newAV()));
 435         if ((tmp = rpn2perl(c->s1)) == 0)
 436             return 0;
 437         av_push(av, tmp);
 438         if ((tmp = rpn2perl(c->s2)) == 0)
 439             return 0;
 440         av_push(av, tmp);
 441         return sv;
 442     }
 443     default: fatal("unknown RPN node type %d", (int) s->which);
 444     }
 445
 446     return 0;
 447 }
 448
 449
 450 /* Decode the Z_SortAttributes struct and store the whole thing into the
 451  * hash by reference
 452  */
 453 int simpleserver_ExpandSortAttributes (HV *sort_spec, Z_SortAttributes *sattr)
 454 {
 455     WRBUF attrset_wr = wrbuf_alloc();
 456     AV *list = newAV();
 457     Z_AttributeList *attr_list = sattr->list;
 458     int i;
 459
 460     oid2str(sattr->id, attrset_wr);
 461     hv_store(sort_spec, "ATTRSET", 7,
 462              newSVpv(attrset_wr->buf, attrset_wr->pos), 0);
 463     wrbuf_free(attrset_wr, 1);
 464
 465     hv_store(sort_spec, "SORT_ATTR", 9, newRV( sv_2mortal( (SV*) list ) ), 0);
 466
 467     for (i = 0; i < attr_list->num_attributes; i++)
 468     {
 469         Z_AttributeElement *attr = *attr_list->attributes++;
 470         HV *attr_spec = newHV();
 471
 472         av_push(list, newRV( sv_2mortal( (SV*) attr_spec ) ));
 473         hv_store(attr_spec, "ATTR_TYPE", 9, newSViv(*attr->attributeType), 0);
 474
 475         if (attr->which == Z_AttributeValue_numeric)
 476         {
 477             hv_store(attr_spec, "ATTR_VALUE", 10,
 478                      newSViv(*attr->value.numeric), 0);
 479         } else {
 480             return 0;
 481         }
 482     }
 483
 484     return 1;
 485 }
 486
 487
 488 /* Decode the Z_SortKeySpec struct and store the whole thing in a perl hash */
 489 int simpleserver_SortKeySpecToHash (HV *sort_spec, Z_SortKeySpec *spec)
 490 {
 491     Z_SortElement *element = spec->sortElement;
 492
 493     hv_store(sort_spec, "RELATION", 8, newSViv(*spec->sortRelation), 0);
 494     hv_store(sort_spec, "CASE", 4, newSViv(*spec->caseSensitivity), 0);
 495     hv_store(sort_spec, "MISSING", 7, newSViv(spec->which), 0);
 496
 497     if (element->which == Z_SortElement_generic)
 498     {
 499         Z_SortKey *key = element->u.generic;
 500
 501         if (key->which == Z_SortKey_sortField)
 502         {
 503             hv_store(sort_spec, "SORTFIELD", 9,
 504                      newSVpv((char *) key->u.sortField, 0), 0);
 505         }
 506         else if (key->which == Z_SortKey_elementSpec)
 507         {
 508             Z_Specification *zspec = key->u.elementSpec;
 509
 510             hv_store(sort_spec, "ELEMENTSPEC_TYPE", 16,
 511                      newSViv(zspec->which), 0);
 512
 513             if (zspec->which == Z_Schema_oid)
 514             {
 515                 WRBUF elementSpec = wrbuf_alloc();
 516
 517                 oid2str(zspec->schema.oid, elementSpec);
 518                 hv_store(sort_spec, "ELEMENTSPEC_VALUE", 17,
 519                          newSVpv(elementSpec->buf, elementSpec->pos), 0);
 520                 wrbuf_free(elementSpec, 1);
 521             }
 522             else if (zspec->which == Z_Schema_uri)
 523             {
 524                 hv_store(sort_spec, "ELEMENTSPEC_VALUE", 17,
 525                          newSVpv((char *) zspec->schema.uri, 0), 0);
 526             }
 527         }
 528         else if (key->which == Z_SortKey_sortAttributes)
 529         {
 530             return simpleserver_ExpandSortAttributes(sort_spec,
 531                                                      key->u.sortAttributes);
 532         }
 533         else
 534         {
 535             return 0;
 536         }
 537     }
 538     else
 539     {
 540         return 0;
 541     }
 542
 543     return 1;
 544 }
 545
 546
 547 static SV *zquery2perl(Z_Query *q)
 548 {
 549     SV *sv;
 550     HV *hv;
 551
 552     if (q->which != Z_Query_type_1 && q->which != Z_Query_type_101)
 553         return 0;
 554     sv = newObject("Net::Z3950::APDU::Query", (SV*) (hv = newHV()));
 555     if (q->u.type_1->attributeSetId)
 556         setMember(hv, "attributeSet",
 557                   translateOID(q->u.type_1->attributeSetId));
 558     setMember(hv, "query", rpn2perl(q->u.type_1->RPNStructure));
 559     return sv;
 560 }
 561
 562
 563 int bend_sort(void *handle, bend_sort_rr *rr)
 564 {
 565         HV *href;
 566         AV *aref;
 567         AV *sort_seq;
 568         SV **temp;
 569         SV *err_code;
 570         SV *err_str;
 571         SV *status;
 572         SV *point;
 573         STRLEN len;
 574         char *ptr;
 575         char *ODR_err_str;
 576         char **input_setnames;
 577         Zfront_handle *zhandle = (Zfront_handle *)handle;
 578         Z_SortKeySpecList *sort_spec = rr->sort_sequence;
 579         int i;
 580
 581         dSP;
 582         ENTER;
 583         SAVETMPS;
 584
 585         aref = newAV();
 586         input_setnames = rr->input_setnames;
 587         for (i = 0; i < rr->num_input_setnames; i++)
 588         {
 589             av_push(aref, newSVpv(*input_setnames++, 0));
 590         }
 591
 592         sort_seq = newAV();
 593         for (i = 0; i < sort_spec->num_specs; i++)
 594         {
 595             Z_SortKeySpec *spec = *sort_spec->specs++;
 596             HV *sort_spec = newHV();
 597
 598             if ( simpleserver_SortKeySpecToHash(sort_spec, spec) )
 599                 av_push(sort_seq, newRV( sv_2mortal( (SV*) sort_spec ) ));
 600             else
 601             {
 602                 rr->errcode = 207;
 603                 return 0;
 604             }
 605         }
 606
 607         href = newHV();
 608         hv_store(href, "INPUT", 5, newRV( (SV*) aref), 0);
 609         hv_store(href, "OUTPUT", 6, newSVpv(rr->output_setname, 0), 0);
 610         hv_store(href, "SEQUENCE", 8, newRV( (SV*) sort_seq), 0);
 611         hv_store(href, "HANDLE", 6, zhandle->handle, 0);
 612         hv_store(href, "STATUS", 6, newSViv(0), 0);
 613         hv_store(href, "ERR_CODE", 8, newSViv(0), 0);
 614         hv_store(href, "ERR_STR", 7, newSVpv("", 0), 0);
 615
 616         PUSHMARK(sp);
 617
 618         XPUSHs(sv_2mortal(newRV( (SV*) href)));
 619
 620         PUTBACK;
 621
 622         perl_call_sv(sort_ref, G_SCALAR | G_DISCARD);
 623
 624         SPAGAIN;
 625
 626         temp = hv_fetch(href, "ERR_CODE", 8, 1);
 627         err_code = newSVsv(*temp);
 628
 629         temp = hv_fetch(href, "ERR_STR", 7, 1);
 630         err_str = newSVsv(*temp);
 631
 632         temp = hv_fetch(href, "STATUS", 6, 1);
 633         status = newSVsv(*temp);
 634
 635         temp = hv_fetch(href, "HANDLE", 6, 1);
 636         point = newSVsv(*temp);
 637
 638         hv_undef(href);
 639         av_undef(aref);
 640         av_undef(sort_seq);
 641
 642         sv_free( (SV*) aref);
 643         sv_free( (SV*) href);
 644         sv_free( (SV*) sort_seq);
 645
 646         rr->errcode = SvIV(err_code);
 647         rr->sort_status = SvIV(status);
 648
 649         ptr = SvPV(err_str, len);
 650         ODR_err_str = (char *)odr_malloc(rr->stream, len + 1);
 651         strcpy(ODR_err_str, ptr);
 652         rr->errstring = ODR_err_str;
 653         zhandle->handle = point;
 654
 655         sv_free(err_code);
 656         sv_free(err_str);
 657         sv_free(status);
 658
 659         PUTBACK;
 660         FREETMPS;
 661         LEAVE;
 662
 663         return 0;
 664 }
 665
 666
 667 int bend_search(void *handle, bend_search_rr *rr)
 668 {
 669         HV *href;
 670         AV *aref;
 671         SV **temp;
 672         char *ODR_errstr;
 673         STRLEN len;
 674         int i;
 675         char **basenames;
 676         WRBUF query;
 677         char *ptr;
 678         SV *point;
 679         Zfront_handle *zhandle = (Zfront_handle *)handle;
 680         CV* handler_cv = 0;
 681         SV *rpnSV;
 682
 683         dSP;
 684         ENTER;
 685         SAVETMPS;
 686
 687         aref = newAV();
 688         basenames = rr->basenames;
 689         for (i = 0; i < rr->num_bases; i++)
 690         {
 691                 av_push(aref, newSVpv(*basenames++, 0));
 692         }
 693 #if ENABLE_STOP_SERVER
 694         if (rr->num_bases == 1 && !strcmp(rr->basenames[0], "XXstop"))
 695         {
 696                 zhandle->stop_flag = 1;
 697         }
 698 #endif
 699         href = newHV();
 700         hv_store(href, "SETNAME", 7, newSVpv(rr->setname, 0), 0);
 701         if (rr->srw_sortKeys && *rr->srw_sortKeys)
 702             hv_store(href, "SRW_SORTKEYS", 12, newSVpv(rr->srw_sortKeys, 0), 0);
 703         hv_store(href, "REPL_SET", 8, newSViv(rr->replace_set), 0);
 704         hv_store(href, "ERR_CODE", 8, newSViv(0), 0);
 705         hv_store(href, "ERR_STR", 7, newSVpv("", 0), 0);
 706         hv_store(href, "HITS", 4, newSViv(0), 0);
 707         hv_store(href, "DATABASES", 9, newRV( (SV*) aref), 0);
 708         hv_store(href, "HANDLE", 6, zhandle->handle, 0);
 709         hv_store(href, "PID", 3, newSViv(getpid()), 0);
 710         if ((rpnSV = zquery2perl(rr->query)) != 0) {
 711             hv_store(href, "RPN", 3, rpnSV, 0);
 712         }
 713         query = zquery2pquery(rr->query);
 714         if (query)
 715         {
 716                 hv_store(href, "QUERY", 5, newSVpv((char *)query->buf, query->pos), 0);
 717         }
 718         else if (rr->query->which == Z_Query_type_104 &&
 719                  rr->query->u.type_104->which == Z_External_CQL) {
 720             hv_store(href, "CQL", 3,
 721                      newSVpv(rr->query->u.type_104->u.cql, 0), 0);
 722         }
 723         else
 724         {
 725                 rr->errcode = 108;
 726                 return 0;
 727         }
 728         PUSHMARK(sp);
 729
 730         XPUSHs(sv_2mortal(newRV( (SV*) href)));
 731
 732         PUTBACK;
 733
 734         handler_cv = simpleserver_sv2cv( search_ref );
 735         perl_call_sv( (SV *) handler_cv, G_SCALAR | G_DISCARD);
 736
 737         SPAGAIN;
 738
 739         temp = hv_fetch(href, "HITS", 4, 1);
 740         rr->hits = SvIV(*temp);
 741
 742         temp = hv_fetch(href, "ERR_CODE", 8, 1);
 743         rr->errcode = SvIV(*temp);
 744
 745         temp = hv_fetch(href, "ERR_STR", 7, 1);
 746         ptr = SvPV(*temp, len);
 747         ODR_errstr = (char *)odr_malloc(rr->stream, len + 1);
 748         strcpy(ODR_errstr, ptr);
 749         rr->errstring = ODR_errstr;
 750
 751         temp = hv_fetch(href, "HANDLE", 6, 1);
 752         point = newSVsv(*temp);
 753
 754         hv_undef(href);
 755         av_undef(aref);
 756
 757         zhandle->handle = point;
 758         sv_free( (SV*) aref);
 759         sv_free( (SV*) href);
 760         if (query)
 761             wrbuf_free(query, 1);
 762         PUTBACK;
 763         FREETMPS;
 764         LEAVE;
 765         return 0;
 766 }
 767
 768
 769 /* ### this is worryingly similar to oid2str() */
 770 WRBUF oid2dotted(int *oid)
 771 {
 772
 773         WRBUF buf = wrbuf_alloc();
 774         int dot = 0;
 775
 776         for (; *oid != -1 ; oid++)
 777         {
 778                 char ibuf[16];
 779                 if (dot)
 780                 {
 781                         wrbuf_putc(buf, '.');
 782                 }
 783                 else
 784                 {
 785                         dot = 1;
 786                 }
 787                 sprintf(ibuf, "%d", *oid);
 788                 wrbuf_puts(buf, ibuf);
 789         }
 790         return buf;
 791 }
 792
 793
 794 int dotted2oid(char *dotted, int *buffer)
 795 {
 796         int *oid;
 797         char ibuf[16];
 798         char *ptr;
 799         int n = 0;
 800
 801         ptr = ibuf;
 802         oid = buffer;
 803         while (*dotted)
 804         {
 805                 if (*dotted == '.')
 806                 {
 807                         n++;
 808                         if (n == MAX_OID)  /* Terminate if more than MAX_OID entries */
 809                         {
 810                                 *oid = -1;
 811                                 return -1;
 812                         }
 813                         *ptr = 0;
 814                         sscanf(ibuf, "%d", oid++);
 815                         ptr = ibuf;
 816                         dotted++;
 817
 818                 }
 819                 else
 820                 {
 821                         *ptr++ = *dotted++;
 822                 }
 823         }
 824         if (n < MAX_OID)
 825         {
 826                 *ptr = 0;
 827                 sscanf(ibuf, "%d", oid++);
 828         }
 829         *oid = -1;
 830         return 0;
 831 }
 832
 833
 834 int bend_fetch(void *handle, bend_fetch_rr *rr)
 835 {
 836         HV *href;
 837         SV **temp;
 838         SV *basename;
 839         SV *record;
 840         SV *last;
 841         SV *err_code;
 842         SV *err_string;
 843         SV *sur_flag;
 844         SV *point;
 845         SV *rep_form;
 846         SV *schema;
 847         char *ptr;
 848         char *ODR_record;
 849         char *ODR_basename;
 850         char *ODR_errstr;
 851         int *ODR_oid_buf;
 852         oident *oid;
 853         WRBUF oid_dotted;
 854         Zfront_handle *zhandle = (Zfront_handle *)handle;
 855         CV* handler_cv = 0;
 856
 857         Z_RecordComposition *composition;
 858         Z_ElementSetNames *simple;
 859         Z_CompSpec *complex;
 860         STRLEN length;
 861
 862         dSP;
 863         ENTER;
 864         SAVETMPS;
 865
 866         rr->errcode = 0;
 867         href = newHV();
 868         hv_store(href, "SETNAME", 7, newSVpv(rr->setname, 0), 0);
 869         if (rr->schema)
 870                 hv_store(href, "SCHEMA", 6, newSVpv(rr->schema, 0), 0);
 871         temp = hv_store(href, "OFFSET", 6, newSViv(rr->number), 0);
 872         if (rr->request_format_raw != 0) {
 873             oid_dotted = oid2dotted(rr->request_format_raw);
 874         } else {
 875             /* Probably an SRU request: assume XML is required */
 876             oid_dotted = wrbuf_alloc();
 877             wrbuf_puts(oid_dotted, "1.2.840.10003.5.109.10");
 878         }
 879         hv_store(href, "REQ_FORM", 8, newSVpv((char *)oid_dotted->buf, oid_dotted->pos), 0);
 880         hv_store(href, "REP_FORM", 8, newSVpv((char *)oid_dotted->buf, oid_dotted->pos), 0);
 881         hv_store(href, "BASENAME", 8, newSVpv("", 0), 0);
 882         hv_store(href, "RECORD", 6, newSVpv("", 0), 0);
 883         hv_store(href, "LAST", 4, newSViv(0), 0);
 884         hv_store(href, "ERR_CODE", 8, newSViv(0), 0);
 885         hv_store(href, "ERR_STR", 7, newSVpv("", 0), 0);
 886         hv_store(href, "SUR_FLAG", 8, newSViv(0), 0);
 887         hv_store(href, "HANDLE", 6, zhandle->handle, 0);
 888         hv_store(href, "PID", 3, newSViv(getpid()), 0);
 889         if (rr->comp)
 890         {
 891                 composition = rr->comp;
 892                 if (composition->which == Z_RecordComp_simple)
 893                 {
 894                         simple = composition->u.simple;
 895                         if (simple->which == Z_ElementSetNames_generic)
 896                         {
 897                                 hv_store(href, "COMP", 4, newSVpv(simple->u.generic, 0), 0);
 898                         }
 899                         else
 900                         {
 901                                 rr->errcode = 26;
 902                         }
 903                 }
 904                 else if (composition->which == Z_RecordComp_complex)
 905                 {
 906                         if (composition->u.complex->generic &&
 907
 908                                         composition->u.complex->generic &&
 909                                         composition->u.complex->generic->elementSpec &&
 910                                         composition->u.complex->generic->elementSpec->which ==
 911                                         Z_ElementSpec_elementSetName)
 912                         {
 913                                 complex = composition->u.complex;
 914                                 hv_store(href, "COMP", 4,
 915                                         newSVpv(complex->generic->elementSpec->u.elementSetName, 0), 0);
 916                         }
 917                         else
 918                         {
 919 #if 0   /* For now ignore this error, which is ubiquitous in SRU */
 920                                 fprintf(stderr, "complex is weird\n");
 921                                 rr->errcode = 26;
 922                                 return 0;
 923 #endif /*0*/
 924                         }
 925                 }
 926                 else
 927                 {
 928                         rr->errcode = 26;
 929                         return;
 930                 }
 931         }
 932
 933         PUSHMARK(sp);
 934
 935         XPUSHs(sv_2mortal(newRV( (SV*) href)));
 936
 937         PUTBACK;
 938
 939         handler_cv = simpleserver_sv2cv( fetch_ref );
 940         perl_call_sv( (SV *) handler_cv, G_SCALAR | G_DISCARD);
 941
 942         SPAGAIN;
 943
 944         temp = hv_fetch(href, "BASENAME", 8, 1);
 945         basename = newSVsv(*temp);
 946
 947         temp = hv_fetch(href, "RECORD", 6, 1);
 948         record = newSVsv(*temp);
 949
 950         temp = hv_fetch(href, "LAST", 4, 1);
 951         last = newSVsv(*temp);
 952
 953         temp = hv_fetch(href, "ERR_CODE", 8, 1);
 954         err_code = newSVsv(*temp);
 955
 956         temp = hv_fetch(href, "ERR_STR", 7, 1),
 957         err_string = newSVsv(*temp);
 958
 959         temp = hv_fetch(href, "SUR_FLAG", 8, 1);
 960         sur_flag = newSVsv(*temp);
 961
 962         temp = hv_fetch(href, "REP_FORM", 8, 1);
 963         rep_form = newSVsv(*temp);
 964
 965         temp = hv_fetch(href, "SCHEMA", 6, 1);
 966         if (temp != 0) {
 967                 schema = newSVsv(*temp);
 968                 ptr = SvPV(schema, length);
 969                 rr->schema = (char *)odr_malloc(rr->stream, length + 1);
 970                 strcpy(rr->schema, ptr);
 971         }
 972
 973         temp = hv_fetch(href, "HANDLE", 6, 1);
 974         point = newSVsv(*temp);
 975
 976
 977         hv_undef(href);
 978
 979         ptr = SvPV(basename, length);
 980         ODR_basename = (char *)odr_malloc(rr->stream, length + 1);
 981         strcpy(ODR_basename, ptr);
 982         rr->basename = ODR_basename;
 983
 984         ptr = SvPV(rep_form, length);
 985         ODR_oid_buf = (int *)odr_malloc(rr->stream, (MAX_OID + 1) * sizeof(int));
 986         if (dotted2oid(ptr, ODR_oid_buf) == -1)         /* Maximum number of OID elements exceeded */
 987         {
 988                 printf("Net::Z3950::SimpleServer: WARNING: OID structure too long, max length is %d\n", MAX_OID);
 989         }
 990         rr->output_format_raw = ODR_oid_buf;
 991
 992         ptr = SvPV(record, length);
 993         oid = oid_getentbyoid(ODR_oid_buf);
 994         if (oid->value == VAL_GRS1)             /* Treat GRS-1 records separately */
 995         {
 996                 rr->record = (char *) read_grs1(ptr, rr->stream);
 997                 rr->len = -1;
 998         }
 999         else
1000         {
1001                 ODR_record = (char *)odr_malloc(rr->stream, length + 1);
1002                 strcpy(ODR_record, ptr);
1003                 rr->record = ODR_record;
1004                 rr->len = length;
1005         }
1006         zhandle->handle = point;
1007         handle = zhandle;
1008         rr->last_in_set = SvIV(last);
1009
1010         if (!(rr->errcode))
1011         {
1012                 rr->errcode = SvIV(err_code);
1013                 ptr = SvPV(err_string, length);
1014                 ODR_errstr = (char *)odr_malloc(rr->stream, length + 1);
1015                 strcpy(ODR_errstr, ptr);
1016                 rr->errstring = ODR_errstr;
1017         }
1018         rr->surrogate_flag = SvIV(sur_flag);
1019
1020         wrbuf_free(oid_dotted, 1);
1021         sv_free((SV*) href);
1022         sv_free(basename);
1023         sv_free(record);
1024         sv_free(last);
1025         sv_free(err_string);
1026         sv_free(err_code),
1027         sv_free(sur_flag);
1028         sv_free(rep_form);
1029         sv_free(schema);
1030
1031         PUTBACK;
1032         FREETMPS;
1033         LEAVE;
1034
1035         return 0;
1036 }
1037
1038
1039 int bend_present(void *handle, bend_present_rr *rr)
1040 {
1041         HV *href;
1042         SV **temp;
1043         SV *err_code;
1044         SV *err_string;
1045         SV *hits;
1046         SV *point;
1047         STRLEN len;
1048         Z_RecordComposition *composition;
1049         Z_ElementSetNames *simple;
1050         Z_CompSpec *complex;
1051         char *ODR_errstr;
1052         char *ptr;
1053         Zfront_handle *zhandle = (Zfront_handle *)handle;
1054         CV* handler_cv = 0;
1055
1056 /*      WRBUF oid_dotted; */
1057
1058         dSP;
1059         ENTER;
1060         SAVETMPS;
1061
1062         href = newHV();
1063         hv_store(href, "HANDLE", 6, zhandle->handle, 0);
1064         hv_store(href, "ERR_CODE", 8, newSViv(0), 0);
1065         hv_store(href, "ERR_STR", 7, newSVpv("", 0), 0);
1066         hv_store(href, "START", 5, newSViv(rr->start), 0);
1067         hv_store(href, "SETNAME", 7, newSVpv(rr->setname, 0), 0);
1068         hv_store(href, "NUMBER", 6, newSViv(rr->number), 0);
1069         /*oid_dotted = oid2dotted(rr->request_format_raw);
1070         hv_store(href, "REQ_FORM", 8, newSVpv((char *)oid_dotted->buf, oid_dotted->pos), 0);*/
1071         hv_store(href, "HITS", 4, newSViv(0), 0);
1072         hv_store(href, "PID", 3, newSViv(getpid()), 0);
1073         if (rr->comp)
1074         {
1075                 composition = rr->comp;
1076                 if (composition->which == Z_RecordComp_simple)
1077                 {
1078                         simple = composition->u.simple;
1079                         if (simple->which == Z_ElementSetNames_generic)
1080                         {
1081                                 hv_store(href, "COMP", 4, newSVpv(simple->u.generic, 0), 0);
1082                         }
1083                         else
1084                         {
1085                                 rr->errcode = 26;
1086                                 return 0;
1087                         }
1088                 }
1089                 else if (composition->which == Z_RecordComp_complex)
1090                 {
1091                         if (composition->u.complex->generic &&
1092
1093                                         composition->u.complex->generic &&
1094                                         composition->u.complex->generic->elementSpec &&
1095                                         composition->u.complex->generic->elementSpec->which ==
1096                                         Z_ElementSpec_elementSetName)
1097                         {
1098                                 complex = composition->u.complex;
1099                                 hv_store(href, "COMP", 4,
1100                                         newSVpv(complex->generic->elementSpec->u.elementSetName, 0), 0);
1101                         }
1102                         else
1103                         {
1104                                 rr->errcode = 26;
1105                                 return 0;
1106                         }
1107                 }
1108                 else
1109                 {
1110                         rr->errcode = 26;
1111                         return;
1112                 }
1113         }
1114
1115         PUSHMARK(sp);
1116
1117         XPUSHs(sv_2mortal(newRV( (SV*) href)));
1118
1119         PUTBACK;
1120
1121         handler_cv = simpleserver_sv2cv( present_ref );
1122         perl_call_sv( (SV *) handler_cv, G_SCALAR | G_DISCARD);
1123
1124         SPAGAIN;
1125
1126         temp = hv_fetch(href, "ERR_CODE", 8, 1);
1127         err_code = newSVsv(*temp);
1128
1129         temp = hv_fetch(href, "ERR_STR", 7, 1);
1130         err_string = newSVsv(*temp);
1131
1132         temp = hv_fetch(href, "HITS", 4, 1);
1133         hits = newSVsv(*temp);
1134
1135         temp = hv_fetch(href, "HANDLE", 6, 1);
1136         point = newSVsv(*temp);
1137
1138         PUTBACK;
1139         FREETMPS;
1140         LEAVE;
1141
1142         hv_undef(href);
1143         rr->errcode = SvIV(err_code);
1144         rr->hits = SvIV(hits);
1145
1146         ptr = SvPV(err_string, len);
1147         ODR_errstr = (char *)odr_malloc(rr->stream, len + 1);
1148         strcpy(ODR_errstr, ptr);
1149         rr->errstring = ODR_errstr;
1150 /*      wrbuf_free(oid_dotted, 1);*/
1151         zhandle->handle = point;
1152         handle = zhandle;
1153         sv_free(err_code);
1154         sv_free(err_string);
1155         sv_free(hits);
1156         sv_free( (SV*) href);
1157
1158         return 0;
1159 }
1160
1161
1162 int bend_esrequest(void *handle, bend_esrequest_rr *rr)
1163 {
1164         perl_call_sv(esrequest_ref, G_VOID | G_DISCARD | G_NOARGS);
1165         return 0;
1166 }
1167
1168
1169 int bend_delete(void *handle, bend_delete_rr *rr)
1170 {
1171         perl_call_sv(delete_ref, G_VOID | G_DISCARD | G_NOARGS);
1172         return 0;
1173 }
1174
1175
1176 int bend_scan(void *handle, bend_scan_rr *rr)
1177 {
1178         HV *href;
1179         AV *aref;
1180         AV *list;
1181         AV *entries;
1182         HV *scan_item;
1183         struct scan_entry *scan_list;
1184         struct scan_entry *buffer;
1185         int *step_size = rr->step_size;
1186         int i;
1187         char **basenames;
1188         SV **temp;
1189         SV *err_code = sv_newmortal();
1190         SV *err_str = sv_newmortal();
1191         SV *point = sv_newmortal();
1192         SV *status = sv_newmortal();
1193         SV *number = sv_newmortal();
1194         char *ptr;
1195         char *ODR_errstr;
1196         STRLEN len;
1197         int term_len;
1198         SV *entries_ref;
1199         Zfront_handle *zhandle = (Zfront_handle *)handle;
1200         CV* handler_cv = 0;
1201
1202         dSP;
1203         ENTER;
1204         SAVETMPS;
1205         href = newHV();
1206         list = newAV();
1207         if (rr->term->term->which == Z_Term_general)
1208         {
1209                 term_len = rr->term->term->u.general->len;
1210                 hv_store(href, "TERM", 4, newSVpv((char*) rr->term->term->u.general->buf, term_len), 0);
1211         } else {
1212                 rr->errcode = 229;      /* Unsupported term type */
1213                 return 0;
1214         }
1215         hv_store(href, "STEP", 4, newSViv(*step_size), 0);
1216         hv_store(href, "NUMBER", 6, newSViv(rr->num_entries), 0);
1217         hv_store(href, "POS", 3, newSViv(rr->term_position), 0);
1218         hv_store(href, "ERR_CODE", 8, newSViv(0), 0);
1219         hv_store(href, "ERR_STR", 7, newSVpv("", 0), 0);
1220         hv_store(href, "HANDLE", 6, zhandle->handle, 0);
1221         hv_store(href, "STATUS", 6, newSViv(BEND_SCAN_SUCCESS), 0);
1222         hv_store(href, "ENTRIES", 7, newRV((SV *) list), 0);
1223         aref = newAV();
1224         basenames = rr->basenames;
1225         for (i = 0; i < rr->num_bases; i++)
1226         {
1227                 av_push(aref, newSVpv(*basenames++, 0));
1228         }
1229         hv_store(href, "DATABASES", 9, newRV( (SV*) aref), 0);
1230
1231         PUSHMARK(sp);
1232
1233         XPUSHs(sv_2mortal(newRV( (SV*) href)));
1234
1235         PUTBACK;
1236
1237         handler_cv = simpleserver_sv2cv( scan_ref );
1238         perl_call_sv( (SV *) handler_cv, G_SCALAR | G_DISCARD);
1239
1240         SPAGAIN;
1241
1242         temp = hv_fetch(href, "ERR_CODE", 8, 1);
1243         err_code = newSVsv(*temp);
1244
1245         temp = hv_fetch(href, "ERR_STR", 7, 1);
1246         err_str = newSVsv(*temp);
1247
1248         temp = hv_fetch(href, "HANDLE", 6, 1);
1249         point = newSVsv(*temp);
1250
1251         temp = hv_fetch(href, "STATUS", 6, 1);
1252         status = newSVsv(*temp);
1253
1254         temp = hv_fetch(href, "NUMBER", 6, 1);
1255         number = newSVsv(*temp);
1256
1257         temp = hv_fetch(href, "ENTRIES", 7, 1);
1258         entries_ref = newSVsv(*temp);
1259
1260         PUTBACK;
1261         FREETMPS;
1262         LEAVE;
1263
1264         ptr = SvPV(err_str, len);
1265         ODR_errstr = (char *)odr_malloc(rr->stream, len + 1);
1266         strcpy(ODR_errstr, ptr);
1267         rr->errstring = ODR_errstr;
1268         rr->errcode = SvIV(err_code);
1269         rr->num_entries = SvIV(number);
1270         rr->status = SvIV(status);
1271         scan_list = (struct scan_entry *) odr_malloc (rr->stream, rr->num_entries * sizeof(*scan_list));
1272         buffer = scan_list;
1273         entries = (AV *)SvRV(entries_ref);
1274         for (i = 0; i < rr->num_entries; i++)
1275         {
1276                 scan_item = (HV *)SvRV(sv_2mortal(av_shift(entries)));
1277                 temp = hv_fetch(scan_item, "TERM", 4, 1);
1278                 ptr = SvPV(*temp, len);
1279                 buffer->term = (char *) odr_malloc (rr->stream, len + 1);
1280                 strcpy(buffer->term, ptr);
1281                 temp = hv_fetch(scan_item, "OCCURRENCE", 10, 1);
1282                 buffer->occurrences = SvIV(*temp);
1283                 buffer++;
1284                 hv_undef(scan_item);
1285         }
1286         rr->entries = scan_list;
1287         zhandle->handle = point;
1288         handle = zhandle;
1289         sv_free(err_code);
1290         sv_free(err_str);
1291         sv_free(status);
1292         sv_free(number);
1293         hv_undef(href);
1294         sv_free((SV *)href);
1295         av_undef(aref);
1296         sv_free((SV *)aref);
1297         av_undef(list);
1298         sv_free((SV *)list);
1299         av_undef(entries);
1300         /*sv_free((SV *)entries);*/
1301         sv_free(entries_ref);
1302
1303         return 0;
1304 }
1305
1306 int bend_explain(void *handle, bend_explain_rr *q)
1307 {
1308         HV *href;
1309         CV *handler_cv = 0;
1310         SV **temp;
1311         char *explain;
1312         SV *explainsv;
1313         STRLEN len;
1314         Zfront_handle *zhandle = (Zfront_handle *)handle;
1315
1316         dSP;
1317         ENTER;
1318         SAVETMPS;
1319
1320         href = newHV();
1321         hv_store(href, "EXPLAIN", 7, newSVpv("", 0), 0);
1322         hv_store(href, "DATABASE", 8, newSVpv(q->database, 0), 0);
1323         hv_store(href, "HANDLE", 6, zhandle->handle, 0);
1324
1325         PUSHMARK(sp);
1326         XPUSHs(sv_2mortal(newRV((SV*) href)));
1327         PUTBACK;
1328
1329         handler_cv = simpleserver_sv2cv(explain_ref);
1330         perl_call_sv((SV*) handler_cv, G_SCALAR | G_DISCARD);
1331
1332         SPAGAIN;
1333
1334         temp = hv_fetch(href, "EXPLAIN", 7, 1);
1335         explainsv = newSVsv(*temp);
1336
1337         PUTBACK;
1338         FREETMPS;
1339         LEAVE;
1340
1341         explain = SvPV(explainsv, len);
1342         q->explain_buf = (char*) odr_malloc(q->stream, len + 1);
1343         strcpy(q->explain_buf, explain);
1344
1345         return 0;
1346 }
1347
1348 bend_initresult *bend_init(bend_initrequest *q)
1349 {
1350         int dummy = simpleserver_clone();
1351         bend_initresult *r = (bend_initresult *)
1352                 odr_malloc (q->stream, sizeof(*r));
1353         char *ptr;
1354         CV* handler_cv = 0;
1355         dSP;
1356         STRLEN len;
1357         NMEM nmem = nmem_create();
1358         Zfront_handle *zhandle =  (Zfront_handle *) nmem_malloc (nmem,
1359                         sizeof(*zhandle));
1360         SV *handle;
1361         HV *href;
1362         SV **temp;
1363
1364         ENTER;
1365         SAVETMPS;
1366
1367         zhandle->nmem = nmem;
1368         zhandle->stop_flag = 0;
1369
1370         if (sort_ref)
1371         {
1372             q->bend_sort = bend_sort;
1373         }
1374         if (search_ref)
1375         {
1376                 q->bend_search = bend_search;
1377         }
1378         if (present_ref)
1379         {
1380                 q->bend_present = bend_present;
1381         }
1382         /*q->bend_esrequest = bend_esrequest;*/
1383         /*q->bend_delete = bend_delete;*/
1384         if (fetch_ref)
1385         {
1386                 q->bend_fetch = bend_fetch;
1387         }
1388         if (scan_ref)
1389         {
1390                 q->bend_scan = bend_scan;
1391         }
1392         if (explain_ref)
1393         {
1394                 q->bend_explain = bend_explain;
1395         }
1396
1397         href = newHV();
1398         hv_store(href, "IMP_ID", 6, newSVpv("", 0), 0);
1399         hv_store(href, "IMP_NAME", 8, newSVpv("", 0), 0);
1400         hv_store(href, "IMP_VER", 7, newSVpv("", 0), 0);
1401         hv_store(href, "ERR_CODE", 8, newSViv(0), 0);
1402         hv_store(href, "ERR_STR", 7, newSViv(0), 0);
1403         hv_store(href, "PEER_NAME", 9, newSVpv(q->peer_name, 0), 0);
1404         hv_store(href, "HANDLE", 6, newSVsv(&sv_undef), 0);
1405         hv_store(href, "PID", 3, newSViv(getpid()), 0);
1406         if (q->auth) {
1407             char *user = NULL;
1408             char *passwd = NULL;
1409             if (q->auth->which == Z_IdAuthentication_open) {
1410                 char *cp;
1411                 user = nmem_strdup (odr_getmem (q->stream), q->auth->u.open);
1412                 cp = strchr (user, '/');
1413                 if (cp) {
1414                     /* password after / given */
1415                     *cp = '\0';
1416                     passwd = cp+1;
1417                 }
1418             } else if (q->auth->which == Z_IdAuthentication_idPass) {
1419                 user = q->auth->u.idPass->userId;
1420                 passwd = q->auth->u.idPass->password;
1421             }
1422             /* ### some code paths have user/password unassigned here */
1423             if (user)
1424                 hv_store(href, "USER", 4, newSVpv(user, 0), 0);
1425             if (passwd)
1426                 hv_store(href, "PASS", 4, newSVpv(passwd, 0), 0);
1427         }
1428
1429         PUSHMARK(sp);
1430
1431         XPUSHs(sv_2mortal(newRV((SV*) href)));
1432
1433         PUTBACK;
1434
1435         if (init_ref != NULL)
1436         {
1437              handler_cv = simpleserver_sv2cv( init_ref );
1438              perl_call_sv( (SV *) handler_cv, G_SCALAR | G_DISCARD);
1439         }
1440
1441         SPAGAIN;
1442
1443         temp = hv_fetch(href, "IMP_ID", 6, 1);
1444         ptr = SvPV(*temp, len);
1445         q->implementation_id = nmem_strdup(nmem, ptr);
1446
1447         temp = hv_fetch(href, "IMP_NAME", 8, 1);
1448         ptr = SvPV(*temp, len);
1449         q->implementation_name = nmem_strdup(nmem, ptr);
1450
1451         temp = hv_fetch(href, "IMP_VER", 7, 1);
1452         ptr = SvPV(*temp, len);
1453         q->implementation_version = nmem_strdup(nmem, ptr);
1454
1455         temp = hv_fetch(href, "ERR_CODE", 8, 1);
1456         r->errcode = SvIV(*temp);
1457
1458         temp = hv_fetch(href, "ERR_STR", 7, 1);
1459         ptr = SvPV(*temp, len);
1460         r->errstring = (char *)odr_malloc(q->stream, len + 1);
1461         strcpy(r->errstring, ptr);
1462
1463         temp = hv_fetch(href, "HANDLE", 6, 1);
1464         handle= newSVsv(*temp);
1465         zhandle->handle = handle;
1466
1467         r->handle = zhandle;
1468
1469         hv_undef(href);
1470         sv_free((SV*) href);
1471
1472         PUTBACK;
1473         FREETMPS;
1474         LEAVE;
1475
1476         return r;
1477 }
1478
1479 void bend_close(void *handle)
1480 {
1481         HV *href;
1482         Zfront_handle *zhandle = (Zfront_handle *)handle;
1483         CV* handler_cv = 0;
1484         int stop_flag = 0;
1485         dSP;
1486         ENTER;
1487         SAVETMPS;
1488
1489         if (close_ref)
1490         {
1491                 href = newHV();
1492                 hv_store(href, "HANDLE", 6, zhandle->handle, 0);
1493
1494                 PUSHMARK(sp);
1495
1496                 XPUSHs(sv_2mortal(newRV((SV *)href)));
1497
1498                 PUTBACK;
1499
1500                 handler_cv = simpleserver_sv2cv( close_ref );
1501                 perl_call_sv( (SV *) handler_cv, G_SCALAR | G_DISCARD);
1502
1503                 SPAGAIN;
1504
1505                 sv_free((SV*) href);
1506         }
1507         else
1508                 sv_free(zhandle->handle);
1509         PUTBACK;
1510         FREETMPS;
1511         LEAVE;
1512         stop_flag = zhandle->stop_flag;
1513         nmem_destroy(zhandle->nmem);
1514         simpleserver_free();
1515
1516         if (stop_flag)
1517                 exit(0);
1518         return;
1519 }
1520
1521
1522 MODULE = Net::Z3950::SimpleServer       PACKAGE = Net::Z3950::SimpleServer
1523
1524 PROTOTYPES: DISABLE
1525
1526
1527 void
1528 set_init_handler(arg)
1529                 SV *arg
1530         CODE:
1531                 init_ref = newSVsv(arg);
1532
1533
1534 void
1535 set_close_handler(arg)
1536                 SV *arg
1537         CODE:
1538                 close_ref = newSVsv(arg);
1539
1540
1541 void
1542 set_sort_handler(arg)
1543                 SV *arg
1544         CODE:
1545                 sort_ref = newSVsv(arg);
1546
1547 void
1548 set_search_handler(arg)
1549                 SV *arg
1550         CODE:
1551                 search_ref = newSVsv(arg);
1552
1553
1554 void
1555 set_fetch_handler(arg)
1556                 SV *arg
1557         CODE:
1558                 fetch_ref = newSVsv(arg);
1559
1560
1561 void
1562 set_present_handler(arg)
1563                 SV *arg
1564         CODE:
1565                 present_ref = newSVsv(arg);
1566
1567
1568 void
1569 set_esrequest_handler(arg)
1570                 SV *arg
1571         CODE:
1572                 esrequest_ref = newSVsv(arg);
1573
1574
1575 void
1576 set_delete_handler(arg)
1577                 SV *arg
1578         CODE:
1579                 delete_ref = newSVsv(arg);
1580
1581
1582 void
1583 set_scan_handler(arg)
1584                 SV *arg
1585         CODE:
1586                 scan_ref = newSVsv(arg);
1587
1588 void
1589 set_explain_handler(arg)
1590                 SV *arg
1591         CODE:
1592                 explain_ref = newSVsv(arg);
1593
1594 int
1595 start_server(...)
1596         PREINIT:
1597                 char **argv;
1598                 char **argv_buf;
1599                 char *ptr;
1600                 int i;
1601                 STRLEN len;
1602         CODE:
1603                 argv_buf = (char **)xmalloc((items + 1) * sizeof(char *));
1604                 argv = argv_buf;
1605                 for (i = 0; i < items; i++)
1606                 {
1607                         ptr = SvPV(ST(i), len);
1608                         *argv_buf = (char *)xmalloc(len + 1);
1609                         strcpy(*argv_buf++, ptr);
1610                 }
1611                 *argv_buf = NULL;
1612                 root_perl_context = PERL_GET_CONTEXT;
1613                 nmem_mutex_create(&simpleserver_mutex);
1614 #if 0
1615                 /* only for debugging perl_clone .. */
1616                 tst_clones();
1617 #endif
1618
1619                 RETVAL = statserv_main(items, argv, bend_init, bend_close);
1620         OUTPUT:
1621                 RETVAL
1622
1623
1624 int
1625 ScanSuccess()
1626         CODE:
1627                 RETVAL = BEND_SCAN_SUCCESS;
1628         OUTPUT:
1629                 RETVAL
1630
1631 int
1632 ScanPartial()
1633         CODE:
1634                 RETVAL = BEND_SCAN_PARTIAL;
1635         OUTPUT:
1636                 RETVAL
1637
1638
1639 void
1640 yazlog(arg)
1641                 SV *arg
1642         CODE:
1643                 STRLEN len;
1644                 char *ptr;
1645                 ptr = SvPV(arg, len);
1646                 yaz_log(YLOG_LOG, "%.*s", len, ptr);