SimpleServer.xs

   1 /*
   2  * Copyright (c) 2000, Index Data.
   3  *
   4  * Permission to use, copy, modify, distribute, and sell this software and
   5  * its documentation, in whole or in part, for any purpose, is hereby granted,
   6  * provided that:
   7  *
   8  * 1. This copyright and permission notice appear in all copies of the
   9  * software and its documentation. Notices of copyright or attribution
  10  * which appear at the beginning of any file must remain unchanged.
  11  *
  12  * 2. The name of Index Data or the individual authors may not be used to
  13  * endorse or promote products derived from this software without specific
  14  * prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED "AS IS" AND WITHOUT WARRANTY OF ANY KIND,
  17  * EXPRESS, IMPLIED, OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
  18  * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
  19  * IN NO EVENT SHALL INDEX DATA BE LIABLE FOR ANY SPECIAL, INCIDENTAL,
  20  * INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES
  21  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER OR
  22  * NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
  23  * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  24  * OF THIS SOFTWARE.
  25  */
  26
  27 /*$Log: SimpleServer.xs,v $
  28 /*Revision 1.13  2002-02-28 11:21:57  mike
  29 /*Add RPN structure to search-handler argument hash.
  30 /*
  31 /*Revision 1.12  2001/08/30 14:02:10  sondberg
  32 /*Small changes.
  33 /*
  34 /*Revision 1.11  2001/08/30 13:15:11  sondberg
  35 /*Corrected a memory leak, one more to go.
  36 /*
  37 /*Revision 1.10  2001/08/29 11:48:36  sondberg
  38 /*Added routines
  39 /*
  40 /*      Net::Z3950::SimpleServer::ScanSuccess
  41 /*      Net::Z3950::SimpleServer::ScanPartial
  42 /*
  43 /*and a bit of documentation.
  44 /*
  45 /*Revision 1.9  2001/08/24 14:00:20  sondberg
  46 /*Added support for scan.
  47 /*
  48 /*Revision 1.8  2001/05/21 11:07:02  sondberg
  49 /*Extended maximum numbers of GRS-1 elements. Should be done dynamically.
  50 /*
  51 /*Revision 1.7  2001/03/13 14:17:15  sondberg
  52 /*Added support for GRS-1.
  53 /**/
  54
  55
  56 #include "EXTERN.h"
  57 #include "perl.h"
  58 #include "XSUB.h"
  59 #include <yaz/backend.h>
  60 #include <yaz/log.h>
  61 #include <yaz/wrbuf.h>
  62 #include <stdio.h>
  63 #include <unistd.h>
  64 #include <stdlib.h>
  65 #include <ctype.h>
  66 #define GRS_MAX_FIELDS 500
  67 #ifdef ASN_COMPILED
  68 #include <yaz/ill.h>
  69 #endif
  70 #ifndef sv_undef                /* To fix the problem with Perl 5.6.0 */
  71 #define sv_undef PL_sv_undef
  72 #endif
  73
  74 typedef struct {
  75         SV *handle;
  76
  77         SV *init_ref;
  78         SV *close_ref;
  79         SV *sort_ref;
  80         SV *search_ref;
  81         SV *fetch_ref;
  82         SV *present_ref;
  83         SV *esrequest_ref;
  84         SV *delete_ref;
  85         SV *scan_ref;
  86 } Zfront_handle;
  87
  88 SV *init_ref = NULL;
  89 SV *close_ref = NULL;
  90 SV *sort_ref = NULL;
  91 SV *search_ref = NULL;
  92 SV *fetch_ref = NULL;
  93 SV *present_ref = NULL;
  94 SV *esrequest_ref = NULL;
  95 SV *delete_ref = NULL;
  96 SV *scan_ref = NULL;
  97 int MAX_OID = 15;
  98
  99
 100 Z_GenericRecord *read_grs1(char *str, ODR o)
 101 {
 102         int type, ivalue;
 103         char line[512], *buf, *ptr, *original;
 104         char value[512];
 105         Z_GenericRecord *r = 0;
 106
 107         original = str;
 108         for (;;)
 109         {
 110                 Z_TaggedElement *t;
 111                 Z_ElementData *c;
 112
 113                 ptr = strchr(str, '\n');
 114                 if (!ptr) {
 115                         return r;
 116                 }
 117                 strncpy(line, str, ptr - str);
 118                 line[ptr - str] = 0;
 119                 buf = line;
 120                 str = ptr + 1;
 121                 while (*buf && isspace(*buf))
 122                         buf++;
 123                 if (*buf == '}') {
 124                         memmove(original, str, strlen(str));
 125                         return r;
 126                 }
 127                 if (sscanf(buf, "(%d,%[^)])", &type, value) != 2)
 128                 {
 129                         yaz_log(LOG_WARN, "Bad data in '%s'", buf);
 130                         return 0;
 131                 }
 132                 if (!type && *value == '0')
 133                         return r;
 134                 if (!(buf = strchr(buf, ')')))
 135                         return 0;
 136                 buf++;
 137                 while (*buf && isspace(*buf))
 138                         buf++;
 139                 if (!*buf)
 140                         return 0;
 141                 if (!r)
 142                 {
 143                         r = (Z_GenericRecord *)odr_malloc(o, sizeof(*r));
 144                         r->elements = (Z_TaggedElement **)
 145                         odr_malloc(o, sizeof(Z_TaggedElement*) * GRS_MAX_FIELDS);
 146                         r->num_elements = 0;
 147                 }
 148                 if (r->num_elements > GRS_MAX_FIELDS)
 149                 {
 150                         yaz_log(LOG_WARN, "Max number of GRS-1 elements exceeded [GRS_MAX_FIELDS=%d]", GRS_MAX_FIELDS);
 151                         exit(0);
 152                 }
 153                 r->elements[r->num_elements] = t = (Z_TaggedElement *) odr_malloc(o, sizeof(Z_TaggedElement));
 154                 t->tagType = (int *)odr_malloc(o, sizeof(int));
 155                 *t->tagType = type;
 156                 t->tagValue = (Z_StringOrNumeric *)
 157                         odr_malloc(o, sizeof(Z_StringOrNumeric));
 158                 if ((ivalue = atoi(value)))
 159                 {
 160                         t->tagValue->which = Z_StringOrNumeric_numeric;
 161                         t->tagValue->u.numeric = (int *)odr_malloc(o, sizeof(int));
 162                         *t->tagValue->u.numeric = ivalue;
 163                 }
 164                 else
 165                 {
 166                         t->tagValue->which = Z_StringOrNumeric_string;
 167                         t->tagValue->u.string = (char *)odr_malloc(o, strlen(value)+1);
 168                         strcpy(t->tagValue->u.string, value);
 169                 }
 170                 t->tagOccurrence = 0;
 171                 t->metaData = 0;
 172                 t->appliedVariant = 0;
 173                 t->content = c = (Z_ElementData *)odr_malloc(o, sizeof(Z_ElementData));
 174                 if (*buf == '{')
 175                 {
 176                         c->which = Z_ElementData_subtree;
 177                         c->u.subtree = read_grs1(str, o);
 178                 }
 179                 else
 180                 {
 181                         c->which = Z_ElementData_string;
 182 /*                      buf[strlen(buf)-1] = '\0';*/
 183                         buf[strlen(buf)] = '\0';
 184                         c->u.string = odr_strdup(o, buf);
 185                 }
 186                 r->num_elements++;
 187         }
 188 }
 189
 190
 191
 192
 193 static void oid2str(Odr_oid *o, WRBUF buf)
 194 {
 195     for (; *o >= 0; o++) {
 196         char ibuf[16];
 197         sprintf(ibuf, "%d", *o);
 198         wrbuf_puts(buf, ibuf);
 199         if (o[1] > 0)
 200             wrbuf_putc(buf, '.');
 201     }
 202 }
 203
 204
 205 static int rpn2pquery(Z_RPNStructure *s, WRBUF buf)
 206 {
 207     switch (s->which) {
 208         case Z_RPNStructure_simple: {
 209             Z_Operand *o = s->u.simple;
 210
 211             switch (o->which) {
 212                 case Z_Operand_APT: {
 213                     Z_AttributesPlusTerm *at = o->u.attributesPlusTerm;
 214
 215                     if (at->attributes) {
 216                         int i;
 217                         char ibuf[16];
 218
 219                         for (i = 0; i < at->attributes->num_attributes; i++) {
 220                             wrbuf_puts(buf, "@attr ");
 221                             if (at->attributes->attributes[i]->attributeSet) {
 222                                 oid2str(at->attributes->attributes[i]->attributeSet, buf);
 223                                 wrbuf_putc(buf, ' ');
 224                             }
 225                             sprintf(ibuf, "%d=", *at->attributes->attributes[i]->attributeType);
 226                             assert(at->attributes->attributes[i]->which == Z_AttributeValue_numeric);
 227                             wrbuf_puts(buf, ibuf);
 228                             sprintf(ibuf, "%d ", *at->attributes->attributes[i]->value.numeric);
 229                             wrbuf_puts(buf, ibuf);
 230                         }
 231                     }
 232                     switch (at->term->which) {
 233                         case Z_Term_general: {
 234                             wrbuf_putc(buf, '"');
 235                             wrbuf_write(buf, (char*) at->term->u.general->buf, at->term->u.general->len);
 236                             wrbuf_puts(buf, "\" ");
 237                             break;
 238                         }
 239                         default: abort();
 240                     }
 241                     break;
 242                 }
 243                 default: abort();
 244             }
 245             break;
 246         }
 247         case Z_RPNStructure_complex: {
 248             Z_Complex *c = s->u.complex;
 249
 250             switch (c->roperator->which) {
 251                 case Z_Operator_and: wrbuf_puts(buf, "@and "); break;
 252                 case Z_Operator_or: wrbuf_puts(buf, "@or "); break;
 253                 case Z_Operator_and_not: wrbuf_puts(buf, "@not "); break;
 254                 case Z_Operator_prox: abort();
 255                 default: abort();
 256             }
 257             if (!rpn2pquery(c->s1, buf))
 258                 return 0;
 259             if (!rpn2pquery(c->s2, buf))
 260                 return 0;
 261             break;
 262         }
 263         default: abort();
 264     }
 265     return 1;
 266 }
 267
 268
 269 WRBUF zquery2pquery(Z_Query *q)
 270 {
 271     WRBUF buf = wrbuf_alloc();
 272
 273     if (q->which != Z_Query_type_1 && q->which != Z_Query_type_101)
 274         return 0;
 275     if (q->u.type_1->attributeSetId) {
 276         /* Output attribute set ID */
 277         wrbuf_puts(buf, "@attrset ");
 278         oid2str(q->u.type_1->attributeSetId, buf);
 279         wrbuf_putc(buf, ' ');
 280     }
 281     return rpn2pquery(q->u.type_1->RPNStructure, buf) ? buf : 0;
 282 }
 283
 284
 285 /* Lifted verbatim from Net::Z3950 yazwrap/util.c */
 286 #include <stdarg.h>
 287 void fatal(char *fmt, ...)
 288 {
 289     va_list ap;
 290
 291     fprintf(stderr, "FATAL (yazwrap): ");
 292     va_start(ap, fmt);
 293     vfprintf(stderr, fmt, ap);
 294     va_end(ap);
 295     fprintf(stderr, "\n");
 296     abort();
 297 }
 298
 299
 300 /* Lifted verbatim from Net::Z3950 yazwrap/receive.c */
 301 /*
 302  * Creates a new Perl object of type `class'; the newly-created scalar
 303  * that is a reference to the blessed thingy `referent' is returned.
 304  */
 305 static SV *newObject(char *class, SV *referent)
 306 {
 307     HV *stash;
 308     SV *sv;
 309
 310     sv = newRV_noinc((SV*) referent);
 311     stash = gv_stashpv(class, 0);
 312     if (stash == 0)
 313         fatal("attempt to create object of undefined class '%s'", class);
 314     /*assert(stash != 0);*/
 315     sv_bless(sv, stash);
 316     return sv;
 317 }
 318
 319
 320 /* Lifted verbatim from Net::Z3950 yazwrap/receive.c */
 321 static void setMember(HV *hv, char *name, SV *val)
 322 {
 323     /* We don't increment `val's reference count -- I think this is
 324      * right because it's created with a refcount of 1, and in fact
 325      * the reference via this hash is the only reference to it in
 326      * general.
 327      */
 328     if (!hv_store(hv, name, (U32) strlen(name), val, (U32) 0))
 329         fatal("couldn't store member in hash");
 330 }
 331
 332
 333 /* Lifted verbatim from Net::Z3950 yazwrap/receive.c */
 334 static SV *translateOID(Odr_oid *x)
 335 {
 336     /* Yaz represents an OID by an int array terminated by a negative
 337      * value, typically -1; we represent it as a reference to a
 338      * blessed scalar string of "."-separated elements.
 339      */
 340     char buf[1000];
 341     int i;
 342
 343     *buf = '\0';
 344     for (i = 0; x[i] >= 0; i++) {
 345         sprintf(buf + strlen(buf), "%d", (int) x[i]);
 346         if (x[i+1] >- 0)
 347             strcat(buf, ".");
 348     }
 349
 350     /*
 351      * ### We'd like to return a blessed scalar (string) here, but of
 352      *  course you can't do that in Perl: only references can be
 353      *  blessed, so we'd have to return a _reference_ to a string, and
 354      *  bless _that_.  Better to do without the blessing, I think.
 355      */
 356     if (1) {
 357         return newSVpv(buf, 0);
 358     } else {
 359         return newObject("Net::Z3950::APDU::OID", newSVpv(buf, 0));
 360     }
 361 }
 362
 363
 364 static SV *rpn2perl(Z_RPNStructure *s)
 365 {
 366     SV *sv;
 367     HV *hv;
 368     AV *av;
 369
 370     switch (s->which) {
 371     case Z_RPNStructure_simple: {
 372         Z_Operand *o = s->u.simple;
 373         Z_AttributesPlusTerm *at;
 374         if (o->which != Z_Operand_APT)
 375             fatal("can't handle RPN simples other than APT");
 376         at = o->u.attributesPlusTerm;
 377         if (at->term->which != Z_Term_general)
 378             fatal("can't handle RPN terms other than general");
 379
 380         sv = newObject("Net::Z3950::RPN::Term", (SV*) (hv = newHV()));
 381         if (at->attributes) {
 382             int i;
 383             SV *attrs = newObject("Net::Z3950::RPN::Attributes",
 384                                   (SV*) (av = newAV()));
 385             for (i = 0; i < at->attributes->num_attributes; i++) {
 386                 Z_AttributeElement *elem = at->attributes->attributes[i];
 387                 HV *hv2;
 388                 SV *tmp = newObject("Net::Z3950::RPN::Attribute",
 389                                     (SV*) (hv2 = newHV()));
 390                 if (elem->attributeSet)
 391                     setMember(hv2, "attributeSet",
 392                               translateOID(elem->attributeSet));
 393                 setMember(hv2, "attributeType",
 394                           newSViv(*elem->attributeType));
 395                 assert(elem->which == Z_AttributeValue_numeric);
 396                 setMember(hv2, "attributeValue",
 397                           newSViv(*elem->value.numeric));
 398                 av_push(av, tmp);
 399             }
 400             setMember(hv, "attributes", attrs);
 401         }
 402         setMember(hv, "term", newSVpv((char*) at->term->u.general->buf,
 403                                       at->term->u.general->len));
 404         return sv;
 405     }
 406     case Z_RPNStructure_complex: {
 407         SV *tmp;
 408         Z_Complex *c = s->u.complex;
 409         char *type = 0;         /* vacuous assignment satisfies gcc -Wall */
 410         switch (c->roperator->which) {
 411         case Z_Operator_and:     type = "Net::Z3950::RPN::And"; break;
 412         case Z_Operator_or:      type = "Net::Z3950::RPN::Or"; break;
 413         case Z_Operator_and_not: type = "Net::Z3950::RPN::AndNot"; break;
 414         case Z_Operator_prox:    fatal("proximity not yet supported");
 415         default: fatal("unknown RPN operator %d", (int) c->roperator->which);
 416         }
 417         sv = newObject(type, (SV*) (av = newAV()));
 418         if ((tmp = rpn2perl(c->s1)) == 0)
 419             return 0;
 420         av_push(av, tmp);
 421         if ((tmp = rpn2perl(c->s2)) == 0)
 422             return 0;
 423         av_push(av, tmp);
 424         return sv;
 425     }
 426     default: fatal("unknown RPN node type %d", (int) s->which);
 427     }
 428
 429     return 0;
 430 }
 431
 432
 433 static SV *zquery2perl(Z_Query *q)
 434 {
 435     SV *sv;
 436     HV *hv;
 437
 438     if (q->which != Z_Query_type_1 && q->which != Z_Query_type_101)
 439         return 0;
 440     sv = newObject("Net::Z3950::APDU::Query", (SV*) (hv = newHV()));
 441     if (q->u.type_1->attributeSetId)
 442         setMember(hv, "attributeSet",
 443                   translateOID(q->u.type_1->attributeSetId));
 444     setMember(hv, "query", rpn2perl(q->u.type_1->RPNStructure));
 445     return sv;
 446 }
 447
 448
 449 int bend_sort(void *handle, bend_sort_rr *rr)
 450 {
 451         HV *href;
 452         AV *aref;
 453         SV **temp;
 454         SV *err_code;
 455         SV *err_str;
 456         SV *status;
 457         STRLEN len;
 458         char *ptr;
 459         char *ODR_err_str;
 460         char **input_setnames;
 461         Zfront_handle *zhandle = (Zfront_handle *)handle;
 462         int i;
 463
 464         dSP;
 465         ENTER;
 466         SAVETMPS;
 467
 468         aref = newAV();
 469         input_setnames = rr->input_setnames;
 470         for (i = 0; i < rr->num_input_setnames; i++)
 471         {
 472                 av_push(aref, newSVpv(*input_setnames++, 0));
 473         }
 474         href = newHV();
 475         hv_store(href, "INPUT", 5, newRV( (SV*) aref), 0);
 476         hv_store(href, "OUTPUT", 6, newSVpv(rr->output_setname, 0), 0);
 477         hv_store(href, "HANDLE", 6, zhandle->handle, 0);
 478         hv_store(href, "STATUS", 6, newSViv(0), 0);
 479
 480         PUSHMARK(sp);
 481
 482         XPUSHs(sv_2mortal(newRV( (SV*) href)));
 483
 484         PUTBACK;
 485
 486         perl_call_sv(sort_ref, G_SCALAR | G_DISCARD);
 487
 488         SPAGAIN;
 489
 490         temp = hv_fetch(href, "ERR_CODE", 8, 1);
 491         err_code = newSVsv(*temp);
 492
 493         temp = hv_fetch(href, "ERR_STR", 7, 1);
 494         err_str = newSVsv(*temp);
 495
 496         temp = hv_fetch(href, "STATUS", 6, 1);
 497         status = newSVsv(*temp);
 498
 499
 500
 501
 502         PUTBACK;
 503         FREETMPS;
 504         LEAVE;
 505
 506         hv_undef(href),
 507         av_undef(aref);
 508         rr->errcode = SvIV(err_code);
 509         rr->sort_status = SvIV(status);
 510         ptr = SvPV(err_str, len);
 511         ODR_err_str = (char *)odr_malloc(rr->stream, len + 1);
 512         strcpy(ODR_err_str, ptr);
 513         rr->errstring = ODR_err_str;
 514
 515         sv_free(err_code);
 516         sv_free(err_str);
 517         sv_free(status);
 518
 519         return 0;
 520 }
 521
 522
 523 int bend_search(void *handle, bend_search_rr *rr)
 524 {
 525         HV *href;
 526         AV *aref;
 527         SV **temp;
 528         SV *hits;
 529         SV *err_code;
 530         SV *err_str;
 531         char *ODR_errstr;
 532         STRLEN len;
 533         int i;
 534         char **basenames;
 535         int n;
 536         WRBUF query;
 537         char *ptr;
 538         SV *point;
 539         SV *ODR_point;
 540         Zfront_handle *zhandle = (Zfront_handle *)handle;
 541
 542         dSP;
 543         ENTER;
 544         SAVETMPS;
 545
 546         aref = newAV();
 547         basenames = rr->basenames;
 548         for (i = 0; i < rr->num_bases; i++)
 549         {
 550                 av_push(aref, newSVpv(*basenames++, 0));
 551         }
 552         href = newHV();
 553         hv_store(href, "SETNAME", 7, newSVpv(rr->setname, 0), 0);
 554         hv_store(href, "REPL_SET", 8, newSViv(rr->replace_set), 0);
 555         hv_store(href, "ERR_CODE", 8, newSViv(0), 0);
 556         hv_store(href, "ERR_STR", 7, newSVpv("", 0), 0);
 557         hv_store(href, "HITS", 4, newSViv(0), 0);
 558         hv_store(href, "DATABASES", 9, newRV( (SV*) aref), 0);
 559         hv_store(href, "HANDLE", 6, zhandle->handle, 0);
 560         hv_store(href, "PID", 3, newSViv(getpid()), 0);
 561         hv_store(href, "RPN", 3, zquery2perl(rr->query), 0);
 562         query = zquery2pquery(rr->query);
 563         if (query)
 564         {
 565                 hv_store(href, "QUERY", 5, newSVpv((char *)query->buf, query->pos), 0);
 566         }
 567         else
 568         {
 569                 rr->errcode = 108;
 570         }
 571         PUSHMARK(sp);
 572
 573         XPUSHs(sv_2mortal(newRV( (SV*) href)));
 574
 575         PUTBACK;
 576
 577         n = perl_call_sv(search_ref, G_SCALAR | G_DISCARD);
 578
 579         SPAGAIN;
 580
 581         temp = hv_fetch(href, "HITS", 4, 1);
 582         hits = newSVsv(*temp);
 583
 584         temp = hv_fetch(href, "ERR_CODE", 8, 1);
 585         err_code = newSVsv(*temp);
 586
 587         temp = hv_fetch(href, "ERR_STR", 7, 1);
 588         err_str = newSVsv(*temp);
 589
 590         temp = hv_fetch(href, "HANDLE", 6, 1);
 591         point = newSVsv(*temp);
 592
 593         PUTBACK;
 594         FREETMPS;
 595         LEAVE;
 596
 597         hv_undef(href);
 598         av_undef(aref);
 599         rr->hits = SvIV(hits);
 600         rr->errcode = SvIV(err_code);
 601         ptr = SvPV(err_str, len);
 602         ODR_errstr = (char *)odr_malloc(rr->stream, len + 1);
 603         strcpy(ODR_errstr, ptr);
 604         rr->errstring = ODR_errstr;
 605 /*      ODR_point = (SV *)odr_malloc(rr->stream, sizeof(*point));
 606         memcpy(ODR_point, point, sizeof(*point));
 607         zhandle->handle = ODR_point;*/
 608         zhandle->handle = point;
 609         handle = zhandle;
 610         sv_free(hits);
 611         sv_free(err_code);
 612         sv_free(err_str);
 613         sv_free( (SV*) aref);
 614         sv_free( (SV*) href);
 615         /*sv_free(point);*/
 616         wrbuf_free(query, 1);
 617         return 0;
 618 }
 619
 620
 621 /* ### this is worryingly similar to oid2str() */
 622 WRBUF oid2dotted(int *oid)
 623 {
 624
 625         WRBUF buf = wrbuf_alloc();
 626         int dot = 0;
 627
 628         for (; *oid != -1 ; oid++)
 629         {
 630                 char ibuf[16];
 631                 if (dot)
 632                 {
 633                         wrbuf_putc(buf, '.');
 634                 }
 635                 else
 636                 {
 637                         dot = 1;
 638                 }
 639                 sprintf(ibuf, "%d", *oid);
 640                 wrbuf_puts(buf, ibuf);
 641         }
 642         return buf;
 643 }
 644
 645
 646 int dotted2oid(char *dotted, int *buffer)
 647 {
 648         int *oid;
 649         char ibuf[16];
 650         char *ptr;
 651         int n = 0;
 652
 653         ptr = ibuf;
 654         oid = buffer;
 655         while (*dotted)
 656         {
 657                 if (*dotted == '.')
 658                 {
 659                         n++;
 660                         if (n == MAX_OID)  /* Terminate if more than MAX_OID entries */
 661                         {
 662                                 *oid = -1;
 663                                 return -1;
 664                         }
 665                         *ptr = 0;
 666                         sscanf(ibuf, "%d", oid++);
 667                         ptr = ibuf;
 668                         dotted++;
 669
 670                 }
 671                 else
 672                 {
 673                         *ptr++ = *dotted++;
 674                 }
 675         }
 676         if (n < MAX_OID)
 677         {
 678                 *ptr = 0;
 679                 sscanf(ibuf, "%d", oid++);
 680         }
 681         *oid = -1;
 682         return 0;
 683 }
 684
 685
 686 int bend_fetch(void *handle, bend_fetch_rr *rr)
 687 {
 688         HV *href;
 689         SV **temp;
 690         SV *basename;
 691         SV *record;
 692         SV *last;
 693         SV *err_code;
 694         SV *err_string;
 695         SV *sur_flag;
 696         SV *point;
 697         SV *rep_form;
 698         char *ptr;
 699         char *ODR_record;
 700         char *ODR_basename;
 701         char *ODR_errstr;
 702         int *ODR_oid_buf;
 703         oident *oid;
 704         WRBUF oid_dotted;
 705         Zfront_handle *zhandle = (Zfront_handle *)handle;
 706
 707         Z_RecordComposition *composition;
 708         Z_ElementSetNames *simple;
 709         STRLEN length;
 710
 711         dSP;
 712         ENTER;
 713         SAVETMPS;
 714
 715         rr->errcode = 0;
 716         href = newHV();
 717         hv_store(href, "SETNAME", 7, newSVpv(rr->setname, 0), 0);
 718         temp = hv_store(href, "OFFSET", 6, newSViv(rr->number), 0);
 719         oid_dotted = oid2dotted(rr->request_format_raw);
 720         hv_store(href, "REQ_FORM", 8, newSVpv((char *)oid_dotted->buf, oid_dotted->pos), 0);
 721         hv_store(href, "REP_FORM", 8, newSVpv((char *)oid_dotted->buf, oid_dotted->pos), 0);
 722         hv_store(href, "BASENAME", 8, newSVpv("", 0), 0);
 723         hv_store(href, "RECORD", 6, newSVpv("", 0), 0);
 724         hv_store(href, "LAST", 4, newSViv(0), 0);
 725         hv_store(href, "ERR_CODE", 8, newSViv(0), 0);
 726         hv_store(href, "ERR_STR", 7, newSVpv("", 0), 0);
 727         hv_store(href, "SUR_FLAG", 8, newSViv(0), 0);
 728         hv_store(href, "HANDLE", 6, zhandle->handle, 0);
 729         hv_store(href, "PID", 3, newSViv(getpid()), 0);
 730         if (rr->comp)
 731         {
 732                 composition = rr->comp;
 733                 if (composition->which == Z_RecordComp_simple)
 734                 {
 735                         simple = composition->u.simple;
 736                         if (simple->which == Z_ElementSetNames_generic)
 737                         {
 738                                 hv_store(href, "COMP", 4, newSVpv(simple->u.generic, 0), 0);
 739                         }
 740                         else
 741                         {
 742                                 rr->errcode = 26;
 743                         }
 744                 }
 745                 else
 746                 {
 747                         rr->errcode = 26;
 748                 }
 749         }
 750
 751         PUSHMARK(sp);
 752
 753         XPUSHs(sv_2mortal(newRV( (SV*) href)));
 754
 755         PUTBACK;
 756
 757         perl_call_sv(fetch_ref, G_SCALAR | G_DISCARD);
 758
 759         SPAGAIN;
 760
 761         temp = hv_fetch(href, "BASENAME", 8, 1);
 762         basename = newSVsv(*temp);
 763
 764         temp = hv_fetch(href, "RECORD", 6, 1);
 765         record = newSVsv(*temp);
 766
 767         temp = hv_fetch(href, "LAST", 4, 1);
 768         last = newSVsv(*temp);
 769
 770         temp = hv_fetch(href, "ERR_CODE", 8, 1);
 771         err_code = newSVsv(*temp);
 772
 773         temp = hv_fetch(href, "ERR_STR", 7, 1),
 774         err_string = newSVsv(*temp);
 775
 776         temp = hv_fetch(href, "SUR_FLAG", 8, 1);
 777         sur_flag = newSVsv(*temp);
 778
 779         temp = hv_fetch(href, "REP_FORM", 8, 1);
 780         rep_form = newSVsv(*temp);
 781
 782         temp = hv_fetch(href, "HANDLE", 6, 1);
 783         point = newSVsv(*temp);
 784
 785         PUTBACK;
 786         FREETMPS;
 787         LEAVE;
 788
 789         hv_undef(href);
 790
 791         ptr = SvPV(basename, length);
 792         ODR_basename = (char *)odr_malloc(rr->stream, length + 1);
 793         strcpy(ODR_basename, ptr);
 794         rr->basename = ODR_basename;
 795
 796         ptr = SvPV(rep_form, length);
 797         ODR_oid_buf = (int *)odr_malloc(rr->stream, (MAX_OID + 1) * sizeof(int));
 798         if (dotted2oid(ptr, ODR_oid_buf) == -1)         /* Maximum number of OID elements exceeded */
 799         {
 800                 printf("Net::Z3950::SimpleServer: WARNING: OID structure too long, max length is %d\n", MAX_OID);
 801         }
 802         rr->output_format_raw = ODR_oid_buf;
 803
 804         ptr = SvPV(record, length);
 805         oid = oid_getentbyoid(ODR_oid_buf);
 806         if (oid->value == VAL_GRS1)             /* Treat GRS-1 records separately */
 807         {
 808                 rr->record = (char *) read_grs1(ptr, rr->stream);
 809                 rr->len = -1;
 810         }
 811         else
 812         {
 813                 ODR_record = (char *)odr_malloc(rr->stream, length + 1);
 814                 strcpy(ODR_record, ptr);
 815                 rr->record = ODR_record;
 816                 rr->len = length;
 817         }
 818         zhandle->handle = point;
 819         handle = zhandle;
 820         rr->last_in_set = SvIV(last);
 821
 822         if (!(rr->errcode))
 823         {
 824                 rr->errcode = SvIV(err_code);
 825                 ptr = SvPV(err_string, length);
 826                 ODR_errstr = (char *)odr_malloc(rr->stream, length + 1);
 827                 strcpy(ODR_errstr, ptr);
 828                 rr->errstring = ODR_errstr;
 829         }
 830         rr->surrogate_flag = SvIV(sur_flag);
 831
 832         wrbuf_free(oid_dotted, 1);
 833         sv_free((SV*) href);
 834         sv_free(basename);
 835         sv_free(record);
 836         sv_free(last);
 837         sv_free(err_string);
 838         sv_free(err_code),
 839         sv_free(sur_flag);
 840         sv_free(rep_form);
 841
 842         return 0;
 843 }
 844
 845
 846 int bend_present(void *handle, bend_present_rr *rr)
 847 {
 848
 849         HV *href;
 850         SV **temp;
 851         SV *err_code;
 852         SV *err_string;
 853         SV *hits;
 854         SV *point;
 855         STRLEN len;
 856         Z_RecordComposition *composition;
 857         Z_ElementSetNames *simple;
 858         char *ODR_errstr;
 859         char *ptr;
 860         Zfront_handle *zhandle = (Zfront_handle *)handle;
 861
 862 /*      WRBUF oid_dotted; */
 863
 864         dSP;
 865         ENTER;
 866         SAVETMPS;
 867
 868         href = newHV();
 869         hv_store(href, "HANDLE", 6, zhandle->handle, 0);
 870         hv_store(href, "ERR_CODE", 8, newSViv(0), 0);
 871         hv_store(href, "ERR_STR", 7, newSVpv("", 0), 0);
 872         hv_store(href, "START", 5, newSViv(rr->start), 0);
 873         hv_store(href, "SETNAME", 7, newSVpv(rr->setname, 0), 0);
 874         hv_store(href, "NUMBER", 6, newSViv(rr->number), 0);
 875         /*oid_dotted = oid2dotted(rr->request_format_raw);
 876         hv_store(href, "REQ_FORM", 8, newSVpv((char *)oid_dotted->buf, oid_dotted->pos), 0);*/
 877         hv_store(href, "HITS", 4, newSViv(0), 0);
 878         hv_store(href, "PID", 3, newSViv(getpid()), 0);
 879         if (rr->comp)
 880         {
 881                 composition = rr->comp;
 882                 if (composition->which == Z_RecordComp_simple)
 883                 {
 884                         simple = composition->u.simple;
 885                         if (simple->which == Z_ElementSetNames_generic)
 886                         {
 887                                 hv_store(href, "COMP", 4, newSVpv(simple->u.generic, 0), 0);
 888                         }
 889                         else
 890                         {
 891                                 rr->errcode = 26;
 892                                 return 0;
 893                         }
 894                 }
 895                 else
 896                 {
 897                         rr->errcode = 26;
 898                         return 0;
 899                 }
 900         }
 901
 902         PUSHMARK(sp);
 903
 904         XPUSHs(sv_2mortal(newRV( (SV*) href)));
 905
 906         PUTBACK;
 907
 908         perl_call_sv(present_ref, G_SCALAR | G_DISCARD);
 909
 910         SPAGAIN;
 911
 912         temp = hv_fetch(href, "ERR_CODE", 8, 1);
 913         err_code = newSVsv(*temp);
 914
 915         temp = hv_fetch(href, "ERR_STR", 7, 1);
 916         err_string = newSVsv(*temp);
 917
 918         temp = hv_fetch(href, "HITS", 4, 1);
 919         hits = newSVsv(*temp);
 920
 921         temp = hv_fetch(href, "HANDLE", 6, 1);
 922         point = newSVsv(*temp);
 923
 924         PUTBACK;
 925         FREETMPS;
 926         LEAVE;
 927
 928         hv_undef(href);
 929         rr->errcode = SvIV(err_code);
 930         rr->hits = SvIV(hits);
 931
 932         ptr = SvPV(err_string, len);
 933         ODR_errstr = (char *)odr_malloc(rr->stream, len + 1);
 934         strcpy(ODR_errstr, ptr);
 935         rr->errstring = ODR_errstr;
 936 /*      wrbuf_free(oid_dotted, 1);*/
 937         zhandle->handle = point;
 938         handle = zhandle;
 939         sv_free(err_code);
 940         sv_free(err_string);
 941         sv_free(hits);
 942         sv_free( (SV*) href);
 943
 944         return 0;
 945 }
 946
 947
 948 int bend_esrequest(void *handle, bend_esrequest_rr *rr)
 949 {
 950         perl_call_sv(esrequest_ref, G_VOID | G_DISCARD | G_NOARGS);
 951         return 0;
 952 }
 953
 954
 955 int bend_delete(void *handle, bend_delete_rr *rr)
 956 {
 957         perl_call_sv(delete_ref, G_VOID | G_DISCARD | G_NOARGS);
 958         return 0;
 959 }
 960
 961
 962 int bend_scan(void *handle, bend_scan_rr *rr)
 963 {
 964         HV *href;
 965         AV *aref;
 966         AV *list;
 967         AV *entries;
 968         HV *scan_item;
 969         struct scan_entry *scan_list;
 970         struct scan_entry *buffer;
 971         int *step_size = rr->step_size;
 972         int i;
 973         char **basenames;
 974         SV **temp;
 975         SV *err_code = sv_newmortal();
 976         SV *err_str = sv_newmortal();
 977         SV *point = sv_newmortal();
 978         SV *status = sv_newmortal();
 979         SV *number = sv_newmortal();
 980         char *ptr;
 981         char *ODR_errstr;
 982         STRLEN len;
 983         int term_len;
 984         SV *term_tmp;
 985         SV *entries_ref;
 986
 987         Zfront_handle *zhandle = (Zfront_handle *)handle;
 988
 989         dSP;
 990         ENTER;
 991         SAVETMPS;
 992         href = newHV();
 993         list = newAV();
 994         if (rr->term->term->which == Z_Term_general)
 995         {
 996                 term_len = rr->term->term->u.general->len;
 997                 hv_store(href, "TERM", 4, newSVpv(rr->term->term->u.general->buf, term_len), 0);
 998         } else {
 999                 rr->errcode = 229;      /* Unsupported term type */
1000                 return 0;
1001         }
1002         hv_store(href, "STEP", 4, newSViv(*step_size), 0);
1003         hv_store(href, "NUMBER", 6, newSViv(rr->num_entries), 0);
1004         hv_store(href, "POS", 3, newSViv(rr->term_position), 0);
1005         hv_store(href, "ERR_CODE", 8, newSViv(0), 0);
1006         hv_store(href, "ERR_STR", 7, newSVpv("", 0), 0);
1007         hv_store(href, "HANDLE", 6, zhandle->handle, 0);
1008         hv_store(href, "STATUS", 6, newSViv(BEND_SCAN_SUCCESS), 0);
1009         hv_store(href, "ENTRIES", 7, newRV((SV *) list), 0);
1010         aref = newAV();
1011         basenames = rr->basenames;
1012         for (i = 0; i < rr->num_bases; i++)
1013         {
1014                 av_push(aref, newSVpv(*basenames++, 0));
1015         }
1016         hv_store(href, "DATABASES", 9, newRV( (SV*) aref), 0);
1017
1018         PUSHMARK(sp);
1019
1020         XPUSHs(sv_2mortal(newRV( (SV*) href)));
1021
1022         PUTBACK;
1023
1024         perl_call_sv(scan_ref, G_SCALAR | G_DISCARD);
1025
1026         SPAGAIN;
1027
1028         temp = hv_fetch(href, "ERR_CODE", 8, 1);
1029         err_code = newSVsv(*temp);
1030
1031         temp = hv_fetch(href, "ERR_STR", 7, 1);
1032         err_str = newSVsv(*temp);
1033
1034         temp = hv_fetch(href, "HANDLE", 6, 1);
1035         point = newSVsv(*temp);
1036
1037         temp = hv_fetch(href, "STATUS", 6, 1);
1038         status = newSVsv(*temp);
1039
1040         temp = hv_fetch(href, "NUMBER", 6, 1);
1041         number = newSVsv(*temp);
1042
1043         temp = hv_fetch(href, "ENTRIES", 7, 1);
1044         entries_ref = newSVsv(*temp);
1045
1046         PUTBACK;
1047         FREETMPS;
1048         LEAVE;
1049
1050         ptr = SvPV(err_str, len);
1051         ODR_errstr = (char *)odr_malloc(rr->stream, len + 1);
1052         strcpy(ODR_errstr, ptr);
1053         rr->errstring = ODR_errstr;
1054         rr->errcode = SvIV(err_code);
1055         rr->num_entries = SvIV(number);
1056         rr->status = SvIV(status);
1057         scan_list = (struct scan_entry *) odr_malloc (rr->stream, rr->num_entries * sizeof(*scan_list));
1058         buffer = scan_list;
1059         entries = (AV *)SvRV(entries_ref);
1060         for (i = 0; i < rr->num_entries; i++)
1061         {
1062                 scan_item = (HV *)SvRV(sv_2mortal(av_shift(entries)));
1063                 temp = hv_fetch(scan_item, "TERM", 4, 1);
1064                 ptr = SvPV(*temp, len);
1065                 buffer->term = (char *) odr_malloc (rr->stream, len + 1);
1066                 strcpy(buffer->term, ptr);
1067                 temp = hv_fetch(scan_item, "OCCURRENCE", 10, 1);
1068                 buffer->occurrences = SvIV(*temp);
1069                 buffer++;
1070                 hv_undef(scan_item);
1071         }
1072         rr->entries = scan_list;
1073         zhandle->handle = point;
1074         handle = zhandle;
1075         sv_free(err_code);
1076         sv_free(err_str);
1077         sv_free(status);
1078         sv_free(number);
1079         hv_undef(href);
1080         sv_free((SV *)href);
1081         av_undef(aref);
1082         sv_free((SV *)aref);
1083         av_undef(list);
1084         sv_free((SV *)list);
1085         av_undef(entries);
1086         /*sv_free((SV *)entries);*/
1087         sv_free(entries_ref);
1088
1089         return 0;
1090 }
1091
1092
1093 bend_initresult *bend_init(bend_initrequest *q)
1094 {
1095         bend_initresult *r = (bend_initresult *) odr_malloc (q->stream, sizeof(*r));
1096         HV *href;
1097         SV **temp;
1098         SV *name;
1099         SV *ver;
1100         SV *err_str;
1101         SV *status;
1102         Zfront_handle *zhandle =  (Zfront_handle *) xmalloc (sizeof(*zhandle));
1103         STRLEN len;
1104         int n;
1105         SV *handle;
1106         /*char *name_ptr;
1107         char *ver_ptr;*/
1108         char *ptr;
1109
1110         dSP;
1111         ENTER;
1112         SAVETMPS;
1113
1114         /*q->bend_sort = bend_sort;*/
1115         if (search_ref)
1116         {
1117                 q->bend_search = bend_search;
1118         }
1119         if (present_ref)
1120         {
1121                 q->bend_present = bend_present;
1122         }
1123         /*q->bend_esrequest = bend_esrequest;*/
1124         /*q->bend_delete = bend_delete;*/
1125         if (fetch_ref)
1126         {
1127                 q->bend_fetch = bend_fetch;
1128         }
1129         if (scan_ref)
1130         {
1131                 q->bend_scan = bend_scan;
1132         }
1133         href = newHV();
1134         hv_store(href, "IMP_NAME", 8, newSVpv("", 0), 0);
1135         hv_store(href, "IMP_VER", 7, newSVpv("", 0), 0);
1136         hv_store(href, "ERR_CODE", 8, newSViv(0), 0);
1137         hv_store(href, "PEER_NAME", 9, newSVpv(q->peer_name, 0), 0);
1138         hv_store(href, "HANDLE", 6, newSVsv(&sv_undef), 0);
1139         hv_store(href, "PID", 3, newSViv(getpid()), 0);
1140
1141         PUSHMARK(sp);
1142
1143         XPUSHs(sv_2mortal(newRV( (SV*) href)));
1144
1145         PUTBACK;
1146
1147         if (init_ref != NULL)
1148         {
1149                 perl_call_sv(init_ref, G_SCALAR | G_DISCARD);
1150         }
1151
1152         SPAGAIN;
1153
1154         temp = hv_fetch(href, "IMP_NAME", 8, 1);
1155         name = newSVsv(*temp);
1156
1157         temp = hv_fetch(href, "IMP_VER", 7, 1);
1158         ver = newSVsv(*temp);
1159
1160         temp = hv_fetch(href, "ERR_CODE", 8, 1);
1161         status = newSVsv(*temp);
1162
1163         temp = hv_fetch(href, "HANDLE", 6, 1);
1164         handle= newSVsv(*temp);
1165
1166         hv_undef(href);
1167         PUTBACK;
1168         FREETMPS;
1169         LEAVE;
1170         zhandle->handle = handle;
1171         r->errcode = SvIV(status);
1172         r->handle = zhandle;
1173         ptr = SvPV(name, len);
1174         q->implementation_name = (char *)xmalloc(len + 1);
1175         strcpy(q->implementation_name, ptr);
1176 /*      q->implementation_name = SvPV(name, len);*/
1177         ptr = SvPV(ver, len);
1178         q->implementation_version = (char *)xmalloc(len + 1);
1179         strcpy(q->implementation_version, ptr);
1180
1181         return r;
1182 }
1183
1184
1185 void bend_close(void *handle)
1186 {
1187         HV *href;
1188         Zfront_handle *zhandle = (Zfront_handle *)handle;
1189         SV **temp;
1190
1191         dSP;
1192         ENTER;
1193         SAVETMPS;
1194
1195         if (close_ref == NULL)
1196         {
1197                 return;
1198         }
1199
1200         href = newHV();
1201         hv_store(href, "HANDLE", 6, zhandle->handle, 0);
1202
1203         PUSHMARK(sp);
1204
1205         XPUSHs(sv_2mortal(newRV((SV *)href)));
1206
1207         PUTBACK;
1208
1209         perl_call_sv(close_ref, G_SCALAR | G_DISCARD);
1210
1211         SPAGAIN;
1212
1213         PUTBACK;
1214         FREETMPS;
1215         LEAVE;
1216
1217         xfree(handle);
1218
1219         return;
1220 }
1221
1222
1223 MODULE = Net::Z3950::SimpleServer       PACKAGE = Net::Z3950::SimpleServer
1224
1225 void
1226 set_init_handler(arg)
1227                 SV *arg
1228         CODE:
1229                 init_ref = newSVsv(arg);
1230
1231
1232 void
1233 set_close_handler(arg)
1234                 SV *arg
1235         CODE:
1236                 close_ref = newSVsv(arg);
1237
1238
1239 void
1240 set_sort_handler(arg)
1241                 SV *arg
1242         CODE:
1243                 sort_ref = newSVsv(arg);
1244
1245 void
1246 set_search_handler(arg)
1247                 SV *arg
1248         CODE:
1249                 search_ref = newSVsv(arg);
1250
1251
1252 void
1253 set_fetch_handler(arg)
1254                 SV *arg
1255         CODE:
1256                 fetch_ref = newSVsv(arg);
1257
1258
1259 void
1260 set_present_handler(arg)
1261                 SV *arg
1262         CODE:
1263                 present_ref = newSVsv(arg);
1264
1265
1266 void
1267 set_esrequest_handler(arg)
1268                 SV *arg
1269         CODE:
1270                 esrequest_ref = newSVsv(arg);
1271
1272
1273 void
1274 set_delete_handler(arg)
1275                 SV *arg
1276         CODE:
1277                 delete_ref = newSVsv(arg);
1278
1279
1280 void
1281 set_scan_handler(arg)
1282                 SV *arg
1283         CODE:
1284                 scan_ref = newSVsv(arg);
1285
1286
1287 int
1288 start_server(...)
1289         PREINIT:
1290                 char **argv;
1291                 char **argv_buf;
1292                 char *ptr;
1293                 int i;
1294                 STRLEN len;
1295         CODE:
1296                 argv_buf = (char **)xmalloc((items + 1) * sizeof(char *));
1297                 argv = argv_buf;
1298                 for (i = 0; i < items; i++)
1299                 {
1300                         ptr = SvPV(ST(i), len);
1301                         *argv_buf = (char *)xmalloc(len + 1);
1302                         strcpy(*argv_buf++, ptr);
1303                 }
1304                 *argv_buf = NULL;
1305
1306                 RETVAL = statserv_main(items, argv, bend_init, bend_close);
1307         OUTPUT:
1308                 RETVAL
1309
1310
1311 int
1312 ScanSuccess()
1313         CODE:
1314                 RETVAL = BEND_SCAN_SUCCESS;
1315         OUTPUT:
1316                 RETVAL
1317
1318 int
1319 ScanPartial()
1320         CODE:
1321                 RETVAL = BEND_SCAN_PARTIAL;
1322         OUTPUT:
1323                 RETVAL
1324
1325