client/client.c

   1 /*
   2  * Copyright (c) 1995, Index Data.
   3  * See the file LICENSE for details.
   4  * Sebastian Hammer, Adam Dickmeiss
   5  *
   6  * $Log: client.c,v $
   7  * Revision 1.9  1995-06-06 08:15:19  quinn
   8  * Cosmetic.
   9  *
  10  * Revision 1.8  1995/06/05  10:52:22  quinn
  11  * Added SCAN.
  12  *
  13  * Revision 1.7  1995/06/02  09:50:09  quinn
  14  * Smallish.
  15  *
  16  * Revision 1.6  1995/05/31  08:29:21  quinn
  17  * Nothing significant.
  18  *
  19  * Revision 1.5  1995/05/29  08:10:47  quinn
  20  * Moved oid.c to util.
  21  *
  22  * Revision 1.4  1995/05/22  15:30:13  adam
  23  * Client uses prefix query notation.
  24  *
  25  * Revision 1.3  1995/05/22  15:06:53  quinn
  26  * *** empty log message ***
  27  *
  28  * Revision 1.2  1995/05/22  14:56:40  quinn
  29  * *** empty log message ***
  30  *
  31  * Revision 1.1  1995/05/22  11:30:31  quinn
  32  * Added prettier client.
  33  *
  34  *
  35  */
  36
  37 /*
  38  * This is the obligatory little toy client, whose primary purpose is
  39  * to illustrate the use of the YAZ service-level API.
  40  */
  41
  42 #include <stdio.h>
  43 #include <stdlib.h>
  44 #include <sys/time.h>
  45 #include <assert.h>
  46 #ifdef _AIX
  47 #include <sys/select.h>
  48 #endif
  49
  50 #include <comstack.h>
  51 #include <tcpip.h>
  52 #ifdef USE_XTIMOSI
  53 #include <xmosi.h>
  54 #endif
  55
  56 #include <proto.h>
  57
  58 #include <marcdisp.h>
  59
  60 #ifdef RPN_QUERY
  61 #ifdef PREFIX_QUERY
  62 #include <pquery.h>
  63 #else
  64 #include <yaz-ccl.h>
  65 #endif
  66 #endif
  67
  68 #include "../version.h"
  69
  70 #define C_PROMPT "Z> "
  71
  72 static ODR out, in, print;              /* encoding and decoding streams */
  73 static COMSTACK conn = 0;               /* our z-association */
  74 static Z_IdAuthentication *auth = 0;    /* our current auth definition */
  75 static char database[512] = "Default";  /* Database name */
  76 static int setnumber = 0;               /* current result set number */
  77 static int smallSetUpperBound = 0;
  78 static int largeSetLowerBound = 1;
  79 static int mediumSetPresentNumber = 0;
  80 static int setno = 1;                   /* current set offset */
  81 static int protocol = PROTO_Z3950;      /* current app protocol */
  82 static ODR_MEM session_mem;                /* memory handle for init-response */
  83 static Z_InitResponse *session = 0;        /* session parameters */
  84 static char last_scan[512] = "0";
  85 static char last_cmd[100] = "?";
  86 #ifdef RPN_QUERY
  87 #ifndef PREFIX_QUERY
  88 static CCL_bibset bibset;               /* CCL bibset handle */
  89 #endif
  90 #endif
  91
  92 static void send_apdu(Z_APDU *a)
  93 {
  94     char *buf;
  95     int len;
  96
  97     if (!z_APDU(out, &a, 0))
  98     {
  99         odr_perror(out, "Encoding APDU");
 100         exit(1);
 101     }
 102     buf = odr_getbuf(out, &len, 0);
 103     odr_reset(out); /* release the APDU */
 104     if (cs_put(conn, buf, len) < 0)
 105     {
 106         fprintf(stderr, "cs_put: %s", cs_errlist[cs_errno(conn)]);
 107         exit(1);
 108     }
 109 }
 110
 111 /* INIT SERVICE ------------------------------- */
 112
 113 static void send_initRequest()
 114 {
 115     Z_APDU *apdu = zget_APDU(out, Z_APDU_initRequest);
 116     Z_InitRequest *req = apdu->u.initRequest;
 117
 118     ODR_MASK_SET(req->options, Z_Options_search);
 119     ODR_MASK_SET(req->options, Z_Options_present);
 120     ODR_MASK_SET(req->options, Z_Options_namedResultSets);
 121     ODR_MASK_SET(req->options, Z_Options_triggerResourceCtrl);
 122     ODR_MASK_SET(req->options, Z_Options_scan);
 123
 124     ODR_MASK_SET(req->protocolVersion, Z_ProtocolVersion_1);
 125     ODR_MASK_SET(req->protocolVersion, Z_ProtocolVersion_2);
 126
 127     req->idAuthentication = auth;
 128
 129     send_apdu(apdu);
 130     printf("Sent initrequest.\n");
 131 }
 132
 133 static int process_initResponse(Z_InitResponse *res)
 134 {
 135     /* save session parameters for later use */
 136     session_mem = odr_extract_mem(in);
 137     session = res;
 138
 139     if (!*res->result)
 140         printf("Connection rejected by target.\n");
 141     else
 142         printf("Connection accepted by target.\n");
 143     if (res->implementationId)
 144         printf("ID     : %s\n", res->implementationId);
 145     if (res->implementationName)
 146         printf("Name   : %s\n", res->implementationName);
 147     if (res->implementationVersion)
 148         printf("Version: %s\n", res->implementationVersion);
 149     if (res->userInformationField)
 150     {
 151         printf("UserInformationfield:\n");
 152         if (!odr_external(print, (Odr_external**)&res-> userInformationField,
 153             0))
 154         {
 155             odr_perror(print, "Printing userinfo\n");
 156             odr_reset(print);
 157         }
 158         if (res->userInformationField->which == ODR_EXTERNAL_octet)
 159         {
 160             printf("Guessing visiblestring:\n");
 161             printf("'%s'\n", res->userInformationField->u. octet_aligned->buf);
 162         }
 163     }
 164     return 0;
 165 }
 166
 167 int cmd_open(char *arg)
 168 {
 169     void *add;
 170     char type[100], addr[100];
 171     CS_TYPE t;
 172
 173     if (conn)
 174     {
 175         printf("Already connected.\n");
 176         return 0;
 177     }
 178     if (!*arg || sscanf(arg, "%[^:]:%s", type, addr) < 2)
 179     {
 180         fprintf(stderr, "Usage: open (osi|tcp) ':' [tsel '/']host[':'port]\n");
 181         return 0;
 182     }
 183 #ifdef USE_XTIMOSI
 184     if (!strcmp(type, "osi"))
 185     {
 186         if (!(add = mosi_strtoaddr(addr)))
 187         {
 188             perror(arg);
 189             return 0;
 190         }
 191         t = mosi_type;
 192         protocol = PROTO_SR;
 193     }
 194     else
 195 #endif
 196     if (!strcmp(type, "tcp"))
 197     {
 198         if (!(add = tcpip_strtoaddr(addr)))
 199         {
 200             perror(arg);
 201             return 0;
 202         }
 203         t = tcpip_type;
 204         protocol = PROTO_Z3950;
 205     }
 206     else
 207     {
 208         fprintf(stderr, "Bad type: %s\n", type);
 209         return 0;
 210     }
 211     if (!(conn = cs_create(t, 1, protocol)))
 212     {
 213         perror("cs_create");
 214         return 0;
 215     }
 216     printf("Connecting...");
 217     fflush(stdout);
 218     if (cs_connect(conn, add) < 0)
 219     {
 220         perror("connect");
 221         cs_close(conn);
 222         conn = 0;
 223         return 0;
 224     }
 225     printf("Ok.\n");
 226     send_initRequest();
 227     return 2;
 228 }
 229
 230 int cmd_authentication(char *arg)
 231 {
 232     static Z_IdAuthentication au;
 233     static char open[256];
 234
 235     if (!*arg)
 236     {
 237         printf("Auth field set to null\n");
 238         auth = 0;
 239         return 1;
 240     }
 241     auth = &au;
 242     au.which = Z_IdAuthentication_open;
 243     au.u.open = open;
 244     strcpy(open, arg);
 245     return 1;
 246 }
 247
 248 /* SEARCH SERVICE ------------------------------ */
 249
 250 void display_record(Z_DatabaseRecord *p)
 251 {
 252     Odr_external *r = (Odr_external*) p;
 253
 254     if (r->direct_reference)
 255     {
 256         oident *ent = oid_getentbyoid(r->direct_reference);
 257
 258         printf("Record type: ");
 259         if (ent)
 260             printf("%s\n", ent->desc);
 261         else if (!odr_oid(print, &r->direct_reference, 0))
 262         {
 263             odr_perror(print, "print oid");
 264             odr_reset(print);
 265         }
 266     }
 267 #if 1
 268     if (r->which == ODR_EXTERNAL_octet && p->u.octet_aligned->len)
 269     {
 270 #if 1
 271         marc_display ((char*)p->u.octet_aligned->buf, stdout);
 272 #else
 273         FILE *ofi = fopen("dump", "a");
 274         assert(ofi);
 275         fwrite(p->u.octet_aligned->buf, 1, p->u.octet_aligned->len, ofi);
 276         fclose(ofi);
 277         printf("dumped record\n");
 278 #endif
 279     }
 280     else
 281     {
 282         printf("Unknown record representation.\n");
 283         if (!odr_external(print, &r, 0))
 284         {
 285             odr_perror(print, "Printing external");
 286             odr_reset(print);
 287         }
 288     }
 289 #endif
 290 }
 291
 292 static void display_diagrec(Z_DiagRec *p)
 293 {
 294     oident *ent;
 295
 296     printf("Diagnostic message from database.\n");
 297     if (!(ent = oid_getentbyoid(p->diagnosticSetId)) ||
 298         ent->class != CLASS_DIAGSET || ent->value != VAL_BIB1)
 299         printf("Missing or unknown diagset\n");
 300     printf("Error condition: %d", *p->condition);
 301     printf(" -- %s\n", p->addinfo ? p->addinfo : "");
 302 }
 303
 304 static void display_nameplusrecord(Z_NamePlusRecord *p)
 305 {
 306     if (p->databaseName)
 307         printf("[%s]", p->databaseName);
 308     if (p->which == Z_NamePlusRecord_surrogateDiagnostic)
 309         display_diagrec(p->u.surrogateDiagnostic);
 310     else
 311         display_record(p->u.databaseRecord);
 312 }
 313
 314 static void display_records(Z_Records *p)
 315 {
 316     int i;
 317
 318     if (p->which == Z_Records_NSD)
 319         display_diagrec(p->u.nonSurrogateDiagnostic);
 320     else
 321     {
 322         printf("Records: %d\n", p->u.databaseOrSurDiagnostics->num_records);
 323         for (i = 0; i < p->u.databaseOrSurDiagnostics->num_records; i++)
 324             display_nameplusrecord(p->u.databaseOrSurDiagnostics->records[i]);
 325     }
 326 }
 327
 328 static int send_searchRequest(char *arg)
 329 {
 330     Z_APDU *apdu = zget_APDU(out, Z_APDU_searchRequest);
 331     Z_SearchRequest *req = apdu->u.searchRequest;
 332     char *databaseNames = database;
 333     Z_Query query;
 334 #ifdef RPN_QUERY
 335 #ifndef PREFIX_QUERY
 336     struct ccl_rpn_node *rpn;
 337     int error, pos;
 338 #endif
 339 #endif
 340     char setstring[100];
 341 #ifdef RPN_QUERY
 342     Z_RPNQuery *RPNquery;
 343     oident bib1;
 344 #else
 345     Odr_oct ccl_query;
 346 #endif
 347
 348 #ifdef RPN_QUERY
 349 #ifndef PREFIX_QUERY
 350     rpn = ccl_find_str(bibset, arg, &error, &pos);
 351     if (error)
 352     {
 353         printf("CCL ERROR: %s\n", ccl_err_msg(error));
 354         return 0;
 355     }
 356 #endif
 357 #endif
 358
 359     if (!strcmp(arg, "@big")) /* strictly for troublemaking */
 360     {
 361         static unsigned char big[2100];
 362         static Odr_oct bigo;
 363
 364         /* send a very big referenceid to test transport stack etc. */
 365         memset(big, 'A', 2100);
 366         bigo.len = bigo.size = 2100;
 367         bigo.buf = big;
 368         req->referenceId = &bigo;
 369     }
 370
 371     if (setnumber >= 0)
 372     {
 373         sprintf(setstring, "%d", ++setnumber);
 374         req->resultSetName = setstring;
 375     }
 376     *req->smallSetUpperBound = smallSetUpperBound;
 377     *req->largeSetLowerBound = largeSetLowerBound;
 378     *req->mediumSetPresentNumber = mediumSetPresentNumber;
 379     req->num_databaseNames = 1;
 380     req->databaseNames = &databaseNames;
 381
 382     req->query = &query;
 383
 384 #ifdef RPN_QUERY
 385     query.which = Z_Query_type_1;
 386
 387 #ifndef PREFIX_QUERY
 388     assert((RPNquery = ccl_rpn_query(rpn)));
 389 #else
 390     RPNquery = p_query_rpn (out, arg);
 391     if (!RPNquery)
 392     {
 393         printf("Prefix query error\n");
 394         return 0;
 395     }
 396 #endif
 397     bib1.proto = protocol;
 398     bib1.class = CLASS_ATTSET;
 399     bib1.value = VAL_BIB1;
 400     RPNquery->attributeSetId = oid_getoidbyent(&bib1);
 401     query.u.type_1 = RPNquery;
 402 #else
 403     query.which = Z_Query_type_2;
 404     query.u.type_2 = &ccl_query;
 405     ccl_query.buf = (unsigned char*) arg;
 406     ccl_query.len = strlen(arg);
 407 #endif
 408
 409     send_apdu(apdu);
 410     setno = 1;
 411     printf("Sent searchRequest.\n");
 412     return 2;
 413 }
 414
 415 static int process_searchResponse(Z_SearchResponse *res)
 416 {
 417     if (res->searchStatus)
 418         printf("Search was a success.\n");
 419     else
 420         printf("Search was a bloomin' failure.\n");
 421     printf("Number of hits: %d, setno %d\n",
 422         *res->resultCount, setnumber);
 423     printf("records returned: %d\n",
 424         *res->numberOfRecordsReturned);
 425     setno += *res->numberOfRecordsReturned;
 426     if (res->records)
 427         display_records(res->records);
 428     return 0;
 429 }
 430
 431 static int cmd_find(char *arg)
 432 {
 433     if (!*arg)
 434     {
 435         printf("Find what?\n");
 436         return 0;
 437     }
 438     if (!conn)
 439     {
 440         printf("Not connected yet\n");
 441         return 0;
 442     }
 443     if (!send_searchRequest(arg))
 444         return 0;
 445     return 2;
 446 }
 447
 448 static int cmd_ssub(char *arg)
 449 {
 450     if (!(smallSetUpperBound = atoi(arg)))
 451         return 0;
 452     return 1;
 453 }
 454
 455 static int cmd_lslb(char *arg)
 456 {
 457     if (!(largeSetLowerBound = atoi(arg)))
 458         return 0;
 459     return 1;
 460 }
 461
 462 static int cmd_mspn(char *arg)
 463 {
 464     if (!(mediumSetPresentNumber = atoi(arg)))
 465         return 0;
 466     return 1;
 467 }
 468
 469 static int cmd_status(char *arg)
 470 {
 471     printf("smallSetUpperBound: %d\n", smallSetUpperBound);
 472     printf("largeSetLowerBound: %d\n", largeSetLowerBound);
 473     printf("mediumSetPresentNumber: %d\n", mediumSetPresentNumber);
 474     return 1;
 475 }
 476
 477 static int cmd_base(char *arg)
 478 {
 479     if (!*arg)
 480     {
 481         printf("Usage: base <database>\n");
 482         return 0;
 483     }
 484     strcpy(database, arg);
 485     return 1;
 486 }
 487
 488 static int cmd_setnames(char *arg)
 489 {
 490     if (setnumber < 0)
 491     {
 492         printf("Set numbering enabled.\n");
 493         setnumber = 0;
 494     }
 495     else
 496     {
 497         printf("Set numbering disabled.\n");
 498         setnumber = -1;
 499     }
 500     return 1;
 501 }
 502
 503 /* PRESENT SERVICE ----------------------------- */
 504
 505 static int send_presentRequest(char *arg)
 506 {
 507     Z_APDU *apdu = zget_APDU(out, Z_APDU_presentRequest);
 508     Z_PresentRequest *req = apdu->u.presentRequest;
 509     int nos = 1;
 510     char *p;
 511     char setstring[100];
 512
 513     if ((p = strchr(arg, '+')))
 514     {
 515         nos = atoi(p + 1);
 516         *p = 0;
 517     }
 518     if (*arg)
 519         setno = atoi(arg);
 520
 521     if (setnumber >= 0)
 522     {
 523         sprintf(setstring, "%d", setnumber);
 524         req->resultSetId = setstring;
 525     }
 526     req->resultSetStartPoint = &setno;
 527     req->numberOfRecordsRequested = &nos;
 528     send_apdu(apdu);
 529     printf("Sent presentRequest (%d+%d).\n", setno, nos);
 530     return 2;
 531 }
 532
 533 static int cmd_show(char *arg)
 534 {
 535     if (!send_presentRequest(arg))
 536         return 0;
 537     return 2;
 538 }
 539
 540 int cmd_quit(char *arg)
 541 {
 542     printf("See you later, alligator.\n");
 543     exit(0);
 544 }
 545
 546 int cmd_cancel(char *arg)
 547 {
 548     Z_APDU *apdu = zget_APDU(out, Z_APDU_triggerResourceControlRequest);
 549     Z_TriggerResourceControlRequest *req =
 550         apdu->u.triggerResourceControlRequest;
 551     bool_t false = 0;
 552
 553     if (!session)
 554     {
 555         printf("Session not initialized yet\n");
 556         return 0;
 557     }
 558     if (!ODR_MASK_GET(session->options, Z_Options_triggerResourceCtrl))
 559     {
 560         printf("Target doesn't support cancel (trigger resource ctrl)\n");
 561         return 0;
 562     }
 563     *req->requestedAction = Z_TriggerResourceCtrl_cancel;
 564     req->resultSetWanted = &false;
 565
 566     send_apdu(apdu);
 567     printf("Sent cancel request\n");
 568     return 2;
 569 }
 570
 571 int send_scanrequest(char *string, int pp, int num)
 572 {
 573     Z_APDU *apdu = zget_APDU(out, Z_APDU_scanRequest);
 574     Z_ScanRequest *req = apdu->u.scanRequest;
 575     char *db = database;
 576     oident attset;
 577
 578     req->num_databaseNames = 1;
 579     req->databaseNames = &db;
 580     attset.proto = protocol;
 581     attset.class = CLASS_ATTSET;
 582     attset.value = VAL_BIB1;
 583     req->attributeSet = oid_getoidbyent(&attset);
 584     req->termListAndStartPoint = p_query_scan(out, string);
 585     req->numberOfTermsRequested = &num;
 586     req->preferredPositionInResponse = &pp;
 587     send_apdu(apdu);
 588     return 2;
 589 }
 590
 591 void display_term(Z_TermInfo *t)
 592 {
 593     if (t->term->which == Z_Term_general)
 594     {
 595         printf("%.*s (%d)\n", t->term->u.general->len, t->term->u.general->buf,
 596             t->globalOccurrences ? *t->globalOccurrences : -1);
 597         sprintf(last_scan, "%.*s", t->term->u.general->len,
 598             t->term->u.general->buf);
 599     }
 600     else
 601         printf("Term type not general.\n");
 602 }
 603
 604 void process_scanResponse(Z_ScanResponse *res)
 605 {
 606     int i;
 607
 608     printf("SCAN: %d entries, position=%d\n", *res->numberOfEntriesReturned,
 609         *res->positionOfTerm);
 610     if (*res->scanStatus != Z_Scan_success)
 611         printf("Scan returned code %d\n", *res->scanStatus);
 612     if (!res->entries)
 613         return;
 614     if (res->entries->which == Z_ListEntries_entries)
 615     {
 616         Z_Entries *ent = res->entries->u.entries;
 617
 618         for (i = 0; i < ent->num_entries; i++)
 619             if (ent->entries[i]->which == Z_Entry_termInfo)
 620             {
 621                 printf("%c ", i + 1 == *res->positionOfTerm ? '*' : ' ');
 622                 display_term(ent->entries[i]->u.termInfo);
 623             }
 624             else
 625                 display_diagrec(ent->entries[i]->u.surrogateDiagnostic);
 626     }
 627     else
 628         display_diagrec(res->entries->u.nonSurrogateDiagnostics->diagRecs[0]);
 629 }
 630
 631 int cmd_scan(char *arg)
 632 {
 633     if (!session)
 634     {
 635         printf("Session not initialized yet\n");
 636         return 0;
 637     }
 638     if (!ODR_MASK_GET(session->options, Z_Options_scan))
 639     {
 640         printf("Target doesn't support scan\n");
 641         return 0;
 642     }
 643     if (*arg)
 644     {
 645         if (send_scanrequest(arg, 5, 19) < 0)
 646             return 0;
 647     }
 648     else
 649         if (send_scanrequest(last_scan, 1, 19) < 0)
 650             return 0;
 651     return 2;
 652 }
 653
 654 static void initialize(void)
 655 {
 656 #ifdef RPN_QUERY
 657 #ifndef PREFIX_QUERY
 658     FILE *inf;
 659 #endif
 660 #endif
 661
 662     if (!(out = odr_createmem(ODR_ENCODE)) ||
 663         !(in = odr_createmem(ODR_DECODE)) ||
 664         !(print = odr_createmem(ODR_PRINT)))
 665     {
 666         fprintf(stderr, "failed to allocate ODR streams\n");
 667         exit(1);
 668     }
 669     setvbuf(stdout, 0, _IONBF, 0);
 670
 671 #ifdef RPN_QUERY
 672 #ifndef PREFIX_QUERY
 673     bibset = ccl_qual_mk ();
 674     inf = fopen ("default.bib", "r");
 675     if (inf)
 676     {
 677         ccl_qual_file (bibset, inf);
 678         fclose (inf);
 679     }
 680 #endif
 681 #endif
 682 }
 683
 684 static int client(void)
 685 {
 686     static struct {
 687         char *cmd;
 688         int (*fun)(char *arg);
 689         char *ad;
 690     } cmd[] = {
 691         {"open", cmd_open, "('tcp'|'osi')':'[<TSEL>'/']<HOST>[':'<PORT>]"},
 692         {"quit", cmd_quit, ""},
 693         {"find", cmd_find, "<CCL-QUERY>"},
 694         {"base", cmd_base, "<BASE-NAME>"},
 695         {"show", cmd_show, "<REC#>['+'<#RECS>]"},
 696         {"scan", cmd_scan, "<TERM>"},
 697         {"authentication", cmd_authentication, "<ACCTSTRING>"},
 698         {"lslb", cmd_lslb, "<largeSetLowerBound>"},
 699         {"ssub", cmd_ssub, "<smallSetUpperBound>"},
 700         {"mspn", cmd_mspn, "<mediumSetPresentNumber>"},
 701         {"status", cmd_status, ""},
 702         {"setnames", cmd_setnames, ""},
 703         {"cancel", cmd_cancel, ""},
 704         {0,0}
 705     };
 706     char *netbuffer= 0;
 707     int netbufferlen = 0;
 708     int i;
 709     Z_APDU *apdu;
 710
 711     while (1)
 712     {
 713         int res;
 714         fd_set input;
 715         char line[1024], word[1024], arg[1024];
 716
 717         FD_ZERO(&input);
 718         FD_SET(0, &input);
 719         if (conn)
 720             FD_SET(cs_fileno(conn), &input);
 721         if ((res = select(20, &input, 0, 0, 0)) < 0)
 722         {
 723             perror("select");
 724             exit(1);
 725         }
 726         if (!res)
 727             continue;
 728         if (FD_ISSET(0, &input))
 729         {
 730             /* quick & dirty way to get a command line. */
 731             if (!gets(line))
 732                 break;
 733             if ((res = sscanf(line, "%s %[^;]", word, arg)) <= 0)
 734             {
 735                 strcpy(word, last_cmd);
 736                 *arg = '\0';
 737             }
 738             else if (res == 1)
 739                 *arg = 0;
 740             strcpy(last_cmd, word);
 741             for (i = 0; cmd[i].cmd; i++)
 742                 if (!strncmp(cmd[i].cmd, word, strlen(word)))
 743                 {
 744                     res = (*cmd[i].fun)(arg);
 745                     break;
 746                 }
 747             if (!cmd[i].cmd) /* dump our help-screen */
 748             {
 749                 printf("Unknown command: %s.\n", word);
 750                 printf("Currently recognized commands:\n");
 751                 for (i = 0; cmd[i].cmd; i++)
 752                     printf("   %s %s\n", cmd[i].cmd, cmd[i].ad);
 753                 res = 1;
 754             }
 755             if (res < 2)
 756                 printf(C_PROMPT);
 757         }
 758         if (conn && FD_ISSET(cs_fileno(conn), &input))
 759         {
 760             do
 761             {
 762                 if ((res = cs_get(conn, &netbuffer, &netbufferlen)) < 0)
 763                 {
 764                     perror("cs_get");
 765                     exit(1);
 766                 }
 767                 if (!res)
 768                 {
 769                     printf("Target closed connection.\n");
 770                     exit(1);
 771                 }
 772                 odr_reset(in); /* release APDU from last round */
 773                 odr_setbuf(in, netbuffer, res, 0);
 774                 if (!z_APDU(in, &apdu, 0))
 775                 {
 776                     odr_perror(in, "Decoding incoming APDU");
 777                     exit(1);
 778                 }
 779 #if 0
 780                 if (!z_APDU(print, &apdu, 0))
 781                 {
 782                     odr_perror(print, "Failed to print incoming APDU");
 783                     odr_reset(print);
 784                     continue;
 785                 }
 786 #endif
 787                 switch(apdu->which)
 788                 {
 789                     case Z_APDU_initResponse:
 790                         process_initResponse(apdu->u.initResponse);
 791                         break;
 792                     case Z_APDU_searchResponse:
 793                         process_searchResponse(apdu->u.searchResponse);
 794                         break;
 795                     case Z_APDU_scanResponse:
 796                         process_scanResponse(apdu->u.scanResponse);
 797                         break;
 798                     case Z_APDU_presentResponse:
 799                         printf("Received presentResponse.\n");
 800                         setno +=
 801                             *apdu->u.presentResponse->numberOfRecordsReturned;
 802                         if (apdu->u.presentResponse->records)
 803                             display_records(apdu->u.presentResponse->records);
 804                         else
 805                             printf("No records.\n");
 806                         break;
 807                     default:
 808                         printf("Received unknown APDU type (%d).\n",
 809                             apdu->which);
 810                         exit(1);
 811                 }
 812                 printf("Z> ");
 813                 fflush(stdout);
 814             }
 815             while (cs_more(conn));
 816         }
 817     }
 818     return 0;
 819 }
 820
 821 int main(int argc, char **argv)
 822 {
 823     initialize();
 824     if (argc > 1)
 825         cmd_open(argv[1]);
 826     else
 827         printf(C_PROMPT);
 828     return client();
 829 }