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 1.13  1995-06-16 10:29:11  quinn
   8  * *** empty log message ***
   9  *
  10  * Revision 1.12  1995/06/15  07:44:57  quinn
  11  * Moving to v3.
  12  *
  13  * Revision 1.11  1995/06/14  15:26:40  quinn
  14  * *** empty log message ***
  15  *
  16  * Revision 1.10  1995/06/06  14:56:58  quinn
  17  * Better diagnostics.
  18  *
  19  * Revision 1.9  1995/06/06  08:15:19  quinn
  20  * Cosmetic.
  21  *
  22  * Revision 1.8  1995/06/05  10:52:22  quinn
  23  * Added SCAN.
  24  *
  25  * Revision 1.7  1995/06/02  09:50:09  quinn
  26  * Smallish.
  27  *
  28  * Revision 1.6  1995/05/31  08:29:21  quinn
  29  * Nothing significant.
  30  *
  31  * Revision 1.5  1995/05/29  08:10:47  quinn
  32  * Moved oid.c to util.
  33  *
  34  * Revision 1.4  1995/05/22  15:30:13  adam
  35  * Client uses prefix query notation.
  36  *
  37  * Revision 1.3  1995/05/22  15:06:53  quinn
  38  * *** empty log message ***
  39  *
  40  * Revision 1.2  1995/05/22  14:56:40  quinn
  41  * *** empty log message ***
  42  *
  43  * Revision 1.1  1995/05/22  11:30:31  quinn
  44  * Added prettier client.
  45  *
  46  *
  47  */
  48
  49 /*
  50  * This is the obligatory little toy client, whose primary purpose is
  51  * to illustrate the use of the YAZ service-level API.
  52  */
  53
  54 #include <stdio.h>
  55 #include <stdlib.h>
  56 #include <sys/time.h>
  57 #include <assert.h>
  58 #ifdef _AIX
  59 #include <sys/select.h>
  60 #endif
  61
  62 #include <comstack.h>
  63 #include <tcpip.h>
  64 #ifdef USE_XTIMOSI
  65 #include <xmosi.h>
  66 #endif
  67
  68 #include <proto.h>
  69 #include <marcdisp.h>
  70
  71 #ifdef RPN_QUERY
  72 #ifdef PREFIX_QUERY
  73 #include <pquery.h>
  74 #else
  75 #include <yaz-ccl.h>
  76 #endif
  77 #endif
  78
  79 #define C_PROMPT "Z> "
  80
  81 static ODR out, in, print;              /* encoding and decoding streams */
  82 static COMSTACK conn = 0;               /* our z-association */
  83 static Z_IdAuthentication *auth = 0;    /* our current auth definition */
  84 static char database[512] = "Default";  /* Database name */
  85 static int setnumber = 0;               /* current result set number */
  86 static int smallSetUpperBound = 0;
  87 static int largeSetLowerBound = 1;
  88 static int mediumSetPresentNumber = 0;
  89 static int setno = 1;                   /* current set offset */
  90 static int protocol = PROTO_Z3950;      /* current app protocol */
  91 static ODR_MEM session_mem;                /* memory handle for init-response */
  92 static Z_InitResponse *session = 0;        /* session parameters */
  93 static char last_scan[512] = "0";
  94 static char last_cmd[100] = "?";
  95 #ifdef RPN_QUERY
  96 #ifndef PREFIX_QUERY
  97 static CCL_bibset bibset;               /* CCL bibset handle */
  98 #endif
  99 #endif
 100
 101 static void send_apdu(Z_APDU *a)
 102 {
 103     char *buf;
 104     int len;
 105
 106     if (!z_APDU(out, &a, 0))
 107     {
 108         odr_perror(out, "Encoding APDU");
 109         exit(1);
 110     }
 111     buf = odr_getbuf(out, &len, 0);
 112     odr_reset(out); /* release the APDU */
 113     if (cs_put(conn, buf, len) < 0)
 114     {
 115         fprintf(stderr, "cs_put: %s", cs_errlist[cs_errno(conn)]);
 116         exit(1);
 117     }
 118 }
 119
 120 /* INIT SERVICE ------------------------------- */
 121
 122 static void send_initRequest()
 123 {
 124     Z_APDU *apdu = zget_APDU(out, Z_APDU_initRequest);
 125     Z_InitRequest *req = apdu->u.initRequest;
 126
 127     ODR_MASK_SET(req->options, Z_Options_search);
 128     ODR_MASK_SET(req->options, Z_Options_present);
 129     ODR_MASK_SET(req->options, Z_Options_namedResultSets);
 130     ODR_MASK_SET(req->options, Z_Options_triggerResourceCtrl);
 131     ODR_MASK_SET(req->options, Z_Options_scan);
 132
 133     ODR_MASK_SET(req->protocolVersion, Z_ProtocolVersion_1);
 134     ODR_MASK_SET(req->protocolVersion, Z_ProtocolVersion_2);
 135
 136     req->idAuthentication = auth;
 137
 138     send_apdu(apdu);
 139     printf("Sent initrequest.\n");
 140 }
 141
 142 static int process_initResponse(Z_InitResponse *res)
 143 {
 144     /* save session parameters for later use */
 145     session_mem = odr_extract_mem(in);
 146     session = res;
 147
 148     if (!*res->result)
 149         printf("Connection rejected by target.\n");
 150     else
 151         printf("Connection accepted by target.\n");
 152     if (res->implementationId)
 153         printf("ID     : %s\n", res->implementationId);
 154     if (res->implementationName)
 155         printf("Name   : %s\n", res->implementationName);
 156     if (res->implementationVersion)
 157         printf("Version: %s\n", res->implementationVersion);
 158     if (res->userInformationField)
 159     {
 160         printf("UserInformationfield:\n");
 161         if (!odr_external(print, (Odr_external**)&res-> userInformationField,
 162             0))
 163         {
 164             odr_perror(print, "Printing userinfo\n");
 165             odr_reset(print);
 166         }
 167         if (res->userInformationField->which == ODR_EXTERNAL_octet)
 168         {
 169             printf("Guessing visiblestring:\n");
 170             printf("'%s'\n", res->userInformationField->u. octet_aligned->buf);
 171         }
 172     }
 173     return 0;
 174 }
 175
 176 int cmd_open(char *arg)
 177 {
 178     void *add;
 179     char type[100], addr[100];
 180     CS_TYPE t;
 181
 182     if (conn)
 183     {
 184         printf("Already connected.\n");
 185         return 0;
 186     }
 187     if (!*arg || sscanf(arg, "%[^:]:%s", type, addr) < 2)
 188     {
 189         fprintf(stderr, "Usage: open (osi|tcp) ':' [tsel '/']host[':'port]\n");
 190         return 0;
 191     }
 192 #ifdef USE_XTIMOSI
 193     if (!strcmp(type, "osi"))
 194     {
 195         if (!(add = mosi_strtoaddr(addr)))
 196         {
 197             perror(arg);
 198             return 0;
 199         }
 200         t = mosi_type;
 201         protocol = PROTO_SR;
 202     }
 203     else
 204 #endif
 205     if (!strcmp(type, "tcp"))
 206     {
 207         if (!(add = tcpip_strtoaddr(addr)))
 208         {
 209             perror(arg);
 210             return 0;
 211         }
 212         t = tcpip_type;
 213         protocol = PROTO_Z3950;
 214     }
 215     else
 216     {
 217         fprintf(stderr, "Bad type: %s\n", type);
 218         return 0;
 219     }
 220     if (!(conn = cs_create(t, 1, protocol)))
 221     {
 222         perror("cs_create");
 223         return 0;
 224     }
 225     printf("Connecting...");
 226     fflush(stdout);
 227     if (cs_connect(conn, add) < 0)
 228     {
 229         perror("connect");
 230         cs_close(conn);
 231         conn = 0;
 232         return 0;
 233     }
 234     printf("Ok.\n");
 235     send_initRequest();
 236     return 2;
 237 }
 238
 239 int cmd_authentication(char *arg)
 240 {
 241     static Z_IdAuthentication au;
 242     static char open[256];
 243
 244     if (!*arg)
 245     {
 246         printf("Auth field set to null\n");
 247         auth = 0;
 248         return 1;
 249     }
 250     auth = &au;
 251     au.which = Z_IdAuthentication_open;
 252     au.u.open = open;
 253     strcpy(open, arg);
 254     return 1;
 255 }
 256
 257 /* SEARCH SERVICE ------------------------------ */
 258
 259 void display_record(Z_DatabaseRecord *p)
 260 {
 261     Odr_external *r = (Odr_external*) p;
 262
 263     if (r->direct_reference)
 264     {
 265         oident *ent = oid_getentbyoid(r->direct_reference);
 266
 267         printf("Record type: ");
 268         if (ent)
 269             printf("%s\n", ent->desc);
 270         else if (!odr_oid(print, &r->direct_reference, 0))
 271         {
 272             odr_perror(print, "print oid");
 273             odr_reset(print);
 274         }
 275     }
 276     if (r->which == ODR_EXTERNAL_octet && p->u.octet_aligned->len)
 277     {
 278         marc_display ((char*)p->u.octet_aligned->buf, stdout);
 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 }
 290
 291 static void display_diagrec(Z_DiagRec *p)
 292 {
 293     oident *ent;
 294 #ifdef Z_95
 295     Z_DefaultDiagFormat *r;
 296 #else
 297     Z_DiagRec *r = p;
 298 #endif
 299
 300     printf("Diagnostic message from database.\n");
 301 #ifdef Z_95
 302     if (p->which != Z_DiagRec_defaultFormat)
 303     {
 304         printf("Diagnostic record not in default format.\n");
 305         return;
 306     }
 307     else
 308         r = p->u.defaultFormat;
 309 #endif
 310     if (!(ent = oid_getentbyoid(r->diagnosticSetId)) ||
 311         ent->class != CLASS_DIAGSET || ent->value != VAL_BIB1)
 312         printf("Missing or unknown diagset\n");
 313     printf("Error condition: %d", *r->condition);
 314     printf(" -- %s\n", r->addinfo ? r->addinfo : "");
 315 }
 316
 317 static void display_nameplusrecord(Z_NamePlusRecord *p)
 318 {
 319     if (p->databaseName)
 320         printf("[%s]", p->databaseName);
 321     if (p->which == Z_NamePlusRecord_surrogateDiagnostic)
 322         display_diagrec(p->u.surrogateDiagnostic);
 323     else
 324         display_record(p->u.databaseRecord);
 325 }
 326
 327 static void display_records(Z_Records *p)
 328 {
 329     int i;
 330
 331     if (p->which == Z_Records_NSD)
 332         display_diagrec(p->u.nonSurrogateDiagnostic);
 333     else
 334     {
 335         printf("Records: %d\n", p->u.databaseOrSurDiagnostics->num_records);
 336         for (i = 0; i < p->u.databaseOrSurDiagnostics->num_records; i++)
 337             display_nameplusrecord(p->u.databaseOrSurDiagnostics->records[i]);
 338     }
 339 }
 340
 341 static int send_searchRequest(char *arg)
 342 {
 343     Z_APDU *apdu = zget_APDU(out, Z_APDU_searchRequest);
 344     Z_SearchRequest *req = apdu->u.searchRequest;
 345     char *databaseNames = database;
 346     Z_Query query;
 347 #ifdef RPN_QUERY
 348 #ifndef PREFIX_QUERY
 349     struct ccl_rpn_node *rpn;
 350     int error, pos;
 351 #endif
 352 #endif
 353     char setstring[100];
 354 #ifdef RPN_QUERY
 355     Z_RPNQuery *RPNquery;
 356     oident bib1;
 357 #else
 358     Odr_oct ccl_query;
 359 #endif
 360
 361 #ifdef RPN_QUERY
 362 #ifndef PREFIX_QUERY
 363     rpn = ccl_find_str(bibset, arg, &error, &pos);
 364     if (error)
 365     {
 366         printf("CCL ERROR: %s\n", ccl_err_msg(error));
 367         return 0;
 368     }
 369 #endif
 370 #endif
 371
 372     if (!strcmp(arg, "@big")) /* strictly for troublemaking */
 373     {
 374         static unsigned char big[2100];
 375         static Odr_oct bigo;
 376
 377         /* send a very big referenceid to test transport stack etc. */
 378         memset(big, 'A', 2100);
 379         bigo.len = bigo.size = 2100;
 380         bigo.buf = big;
 381         req->referenceId = &bigo;
 382     }
 383
 384     if (setnumber >= 0)
 385     {
 386         sprintf(setstring, "%d", ++setnumber);
 387         req->resultSetName = setstring;
 388     }
 389     *req->smallSetUpperBound = smallSetUpperBound;
 390     *req->largeSetLowerBound = largeSetLowerBound;
 391     *req->mediumSetPresentNumber = mediumSetPresentNumber;
 392     req->num_databaseNames = 1;
 393     req->databaseNames = &databaseNames;
 394
 395     req->query = &query;
 396
 397 #ifdef RPN_QUERY
 398     query.which = Z_Query_type_1;
 399
 400 #ifndef PREFIX_QUERY
 401     assert((RPNquery = ccl_rpn_query(rpn)));
 402 #else
 403     RPNquery = p_query_rpn (out, arg);
 404     if (!RPNquery)
 405     {
 406         printf("Prefix query error\n");
 407         return 0;
 408     }
 409 #endif
 410     bib1.proto = protocol;
 411     bib1.class = CLASS_ATTSET;
 412     bib1.value = VAL_BIB1;
 413     RPNquery->attributeSetId = oid_getoidbyent(&bib1);
 414     query.u.type_1 = RPNquery;
 415 #else
 416     query.which = Z_Query_type_2;
 417     query.u.type_2 = &ccl_query;
 418     ccl_query.buf = (unsigned char*) arg;
 419     ccl_query.len = strlen(arg);
 420 #endif
 421
 422     send_apdu(apdu);
 423     setno = 1;
 424     printf("Sent searchRequest.\n");
 425     return 2;
 426 }
 427
 428 static int process_searchResponse(Z_SearchResponse *res)
 429 {
 430     if (*res->searchStatus)
 431         printf("Search was a success.\n");
 432     else
 433         printf("Search was a bloomin' failure.\n");
 434     printf("Number of hits: %d, setno %d\n",
 435         *res->resultCount, setnumber);
 436     printf("records returned: %d\n",
 437         *res->numberOfRecordsReturned);
 438     setno += *res->numberOfRecordsReturned;
 439     if (res->records)
 440         display_records(res->records);
 441     return 0;
 442 }
 443
 444 static int cmd_find(char *arg)
 445 {
 446     if (!*arg)
 447     {
 448         printf("Find what?\n");
 449         return 0;
 450     }
 451     if (!conn)
 452     {
 453         printf("Not connected yet\n");
 454         return 0;
 455     }
 456     if (!send_searchRequest(arg))
 457         return 0;
 458     return 2;
 459 }
 460
 461 static int cmd_ssub(char *arg)
 462 {
 463     if (!(smallSetUpperBound = atoi(arg)))
 464         return 0;
 465     return 1;
 466 }
 467
 468 static int cmd_lslb(char *arg)
 469 {
 470     if (!(largeSetLowerBound = atoi(arg)))
 471         return 0;
 472     return 1;
 473 }
 474
 475 static int cmd_mspn(char *arg)
 476 {
 477     if (!(mediumSetPresentNumber = atoi(arg)))
 478         return 0;
 479     return 1;
 480 }
 481
 482 static int cmd_status(char *arg)
 483 {
 484     printf("smallSetUpperBound: %d\n", smallSetUpperBound);
 485     printf("largeSetLowerBound: %d\n", largeSetLowerBound);
 486     printf("mediumSetPresentNumber: %d\n", mediumSetPresentNumber);
 487     return 1;
 488 }
 489
 490 static int cmd_base(char *arg)
 491 {
 492     if (!*arg)
 493     {
 494         printf("Usage: base <database>\n");
 495         return 0;
 496     }
 497     strcpy(database, arg);
 498     return 1;
 499 }
 500
 501 static int cmd_setnames(char *arg)
 502 {
 503     if (setnumber < 0)
 504     {
 505         printf("Set numbering enabled.\n");
 506         setnumber = 0;
 507     }
 508     else
 509     {
 510         printf("Set numbering disabled.\n");
 511         setnumber = -1;
 512     }
 513     return 1;
 514 }
 515
 516 /* PRESENT SERVICE ----------------------------- */
 517
 518 static int send_presentRequest(char *arg)
 519 {
 520     Z_APDU *apdu = zget_APDU(out, Z_APDU_presentRequest);
 521     Z_PresentRequest *req = apdu->u.presentRequest;
 522     int nos = 1;
 523     char *p;
 524     char setstring[100];
 525
 526     if ((p = strchr(arg, '+')))
 527     {
 528         nos = atoi(p + 1);
 529         *p = 0;
 530     }
 531     if (*arg)
 532         setno = atoi(arg);
 533
 534     if (setnumber >= 0)
 535     {
 536         sprintf(setstring, "%d", setnumber);
 537         req->resultSetId = setstring;
 538     }
 539     req->resultSetStartPoint = &setno;
 540     req->numberOfRecordsRequested = &nos;
 541     send_apdu(apdu);
 542     printf("Sent presentRequest (%d+%d).\n", setno, nos);
 543     return 2;
 544 }
 545
 546 static int cmd_show(char *arg)
 547 {
 548     if (!send_presentRequest(arg))
 549         return 0;
 550     return 2;
 551 }
 552
 553 int cmd_quit(char *arg)
 554 {
 555     printf("See you later, alligator.\n");
 556     exit(0);
 557 }
 558
 559 int cmd_cancel(char *arg)
 560 {
 561     Z_APDU *apdu = zget_APDU(out, Z_APDU_triggerResourceControlRequest);
 562     Z_TriggerResourceControlRequest *req =
 563         apdu->u.triggerResourceControlRequest;
 564     bool_t false = 0;
 565
 566     if (!session)
 567     {
 568         printf("Session not initialized yet\n");
 569         return 0;
 570     }
 571     if (!ODR_MASK_GET(session->options, Z_Options_triggerResourceCtrl))
 572     {
 573         printf("Target doesn't support cancel (trigger resource ctrl)\n");
 574         return 0;
 575     }
 576     *req->requestedAction = Z_TriggerResourceCtrl_cancel;
 577     req->resultSetWanted = &false;
 578
 579     send_apdu(apdu);
 580     printf("Sent cancel request\n");
 581     return 2;
 582 }
 583
 584 int send_scanrequest(char *string, int pp, int num)
 585 {
 586     Z_APDU *apdu = zget_APDU(out, Z_APDU_scanRequest);
 587     Z_ScanRequest *req = apdu->u.scanRequest;
 588     char *db = database;
 589     oident attset;
 590
 591     req->num_databaseNames = 1;
 592     req->databaseNames = &db;
 593     attset.proto = protocol;
 594     attset.class = CLASS_ATTSET;
 595     attset.value = VAL_BIB1;
 596     req->attributeSet = oid_getoidbyent(&attset);
 597     req->termListAndStartPoint = p_query_scan(out, string);
 598     req->numberOfTermsRequested = &num;
 599     req->preferredPositionInResponse = &pp;
 600     send_apdu(apdu);
 601     return 2;
 602 }
 603
 604 void display_term(Z_TermInfo *t)
 605 {
 606     if (t->term->which == Z_Term_general)
 607     {
 608         printf("%.*s (%d)\n", t->term->u.general->len, t->term->u.general->buf,
 609             t->globalOccurrences ? *t->globalOccurrences : -1);
 610         sprintf(last_scan, "%.*s", t->term->u.general->len,
 611             t->term->u.general->buf);
 612     }
 613     else
 614         printf("Term type not general.\n");
 615 }
 616
 617 void process_scanResponse(Z_ScanResponse *res)
 618 {
 619     int i;
 620
 621     printf("SCAN: %d entries, position=%d\n", *res->numberOfEntriesReturned,
 622         *res->positionOfTerm);
 623     if (*res->scanStatus != Z_Scan_success)
 624         printf("Scan returned code %d\n", *res->scanStatus);
 625     if (!res->entries)
 626         return;
 627     if (res->entries->which == Z_ListEntries_entries)
 628     {
 629         Z_Entries *ent = res->entries->u.entries;
 630
 631         for (i = 0; i < ent->num_entries; i++)
 632             if (ent->entries[i]->which == Z_Entry_termInfo)
 633             {
 634                 printf("%c ", i + 1 == *res->positionOfTerm ? '*' : ' ');
 635                 display_term(ent->entries[i]->u.termInfo);
 636             }
 637             else
 638                 display_diagrec(ent->entries[i]->u.surrogateDiagnostic);
 639     }
 640     else
 641         display_diagrec(res->entries->u.nonSurrogateDiagnostics->diagRecs[0]);
 642 }
 643
 644 int cmd_scan(char *arg)
 645 {
 646     if (!session)
 647     {
 648         printf("Session not initialized yet\n");
 649         return 0;
 650     }
 651     if (!ODR_MASK_GET(session->options, Z_Options_scan))
 652     {
 653         printf("Target doesn't support scan\n");
 654         return 0;
 655     }
 656     if (*arg)
 657     {
 658         if (send_scanrequest(arg, 5, 20) < 0)
 659             return 0;
 660     }
 661     else
 662         if (send_scanrequest(last_scan, 1, 20) < 0)
 663             return 0;
 664     return 2;
 665 }
 666
 667 static void initialize(void)
 668 {
 669 #ifdef RPN_QUERY
 670 #ifndef PREFIX_QUERY
 671     FILE *inf;
 672 #endif
 673 #endif
 674
 675     if (!(out = odr_createmem(ODR_ENCODE)) ||
 676         !(in = odr_createmem(ODR_DECODE)) ||
 677         !(print = odr_createmem(ODR_PRINT)))
 678     {
 679         fprintf(stderr, "failed to allocate ODR streams\n");
 680         exit(1);
 681     }
 682     setvbuf(stdout, 0, _IONBF, 0);
 683
 684 #ifdef RPN_QUERY
 685 #ifndef PREFIX_QUERY
 686     bibset = ccl_qual_mk ();
 687     inf = fopen ("default.bib", "r");
 688     if (inf)
 689     {
 690         ccl_qual_file (bibset, inf);
 691         fclose (inf);
 692     }
 693 #endif
 694 #endif
 695 }
 696
 697 static int client(void)
 698 {
 699     static struct {
 700         char *cmd;
 701         int (*fun)(char *arg);
 702         char *ad;
 703     } cmd[] = {
 704         {"open", cmd_open, "('tcp'|'osi')':'[<TSEL>'/']<HOST>[':'<PORT>]"},
 705         {"quit", cmd_quit, ""},
 706         {"find", cmd_find, "<CCL-QUERY>"},
 707         {"base", cmd_base, "<BASE-NAME>"},
 708         {"show", cmd_show, "<REC#>['+'<#RECS>]"},
 709         {"scan", cmd_scan, "<TERM>"},
 710         {"authentication", cmd_authentication, "<ACCTSTRING>"},
 711         {"lslb", cmd_lslb, "<largeSetLowerBound>"},
 712         {"ssub", cmd_ssub, "<smallSetUpperBound>"},
 713         {"mspn", cmd_mspn, "<mediumSetPresentNumber>"},
 714         {"status", cmd_status, ""},
 715         {"setnames", cmd_setnames, ""},
 716         {"cancel", cmd_cancel, ""},
 717         {0,0}
 718     };
 719     char *netbuffer= 0;
 720     int netbufferlen = 0;
 721     int i;
 722     Z_APDU *apdu;
 723
 724     while (1)
 725     {
 726         int res;
 727         fd_set input;
 728         char line[1024], word[1024], arg[1024];
 729
 730         FD_ZERO(&input);
 731         FD_SET(0, &input);
 732         if (conn)
 733             FD_SET(cs_fileno(conn), &input);
 734         if ((res = select(20, &input, 0, 0, 0)) < 0)
 735         {
 736             perror("select");
 737             exit(1);
 738         }
 739         if (!res)
 740             continue;
 741         if (FD_ISSET(0, &input))
 742         {
 743             /* quick & dirty way to get a command line. */
 744             if (!gets(line))
 745                 break;
 746             if ((res = sscanf(line, "%s %[^;]", word, arg)) <= 0)
 747             {
 748                 strcpy(word, last_cmd);
 749                 *arg = '\0';
 750             }
 751             else if (res == 1)
 752                 *arg = 0;
 753             strcpy(last_cmd, word);
 754             for (i = 0; cmd[i].cmd; i++)
 755                 if (!strncmp(cmd[i].cmd, word, strlen(word)))
 756                 {
 757                     res = (*cmd[i].fun)(arg);
 758                     break;
 759                 }
 760             if (!cmd[i].cmd) /* dump our help-screen */
 761             {
 762                 printf("Unknown command: %s.\n", word);
 763                 printf("Currently recognized commands:\n");
 764                 for (i = 0; cmd[i].cmd; i++)
 765                     printf("   %s %s\n", cmd[i].cmd, cmd[i].ad);
 766                 res = 1;
 767             }
 768             if (res < 2)
 769                 printf(C_PROMPT);
 770         }
 771         if (conn && FD_ISSET(cs_fileno(conn), &input))
 772         {
 773             do
 774             {
 775                 if ((res = cs_get(conn, &netbuffer, &netbufferlen)) < 0)
 776                 {
 777                     perror("cs_get");
 778                     exit(1);
 779                 }
 780                 if (!res)
 781                 {
 782                     printf("Target closed connection.\n");
 783                     exit(1);
 784                 }
 785                 odr_reset(in); /* release APDU from last round */
 786                 odr_setbuf(in, netbuffer, res, 0);
 787                 if (!z_APDU(in, &apdu, 0))
 788                 {
 789                     odr_perror(in, "Decoding incoming APDU");
 790                     exit(1);
 791                 }
 792 #if 0
 793                 if (!z_APDU(print, &apdu, 0))
 794                 {
 795                     odr_perror(print, "Failed to print incoming APDU");
 796                     odr_reset(print);
 797                     continue;
 798                 }
 799 #endif
 800                 switch(apdu->which)
 801                 {
 802                     case Z_APDU_initResponse:
 803                         process_initResponse(apdu->u.initResponse);
 804                         break;
 805                     case Z_APDU_searchResponse:
 806                         process_searchResponse(apdu->u.searchResponse);
 807                         break;
 808                     case Z_APDU_scanResponse:
 809                         process_scanResponse(apdu->u.scanResponse);
 810                         break;
 811                     case Z_APDU_presentResponse:
 812                         printf("Received presentResponse.\n");
 813                         setno +=
 814                             *apdu->u.presentResponse->numberOfRecordsReturned;
 815                         if (apdu->u.presentResponse->records)
 816                             display_records(apdu->u.presentResponse->records);
 817                         else
 818                             printf("No records.\n");
 819                         break;
 820                     default:
 821                         printf("Received unknown APDU type (%d).\n",
 822                             apdu->which);
 823                         exit(1);
 824                 }
 825                 printf("Z> ");
 826                 fflush(stdout);
 827             }
 828             while (cs_more(conn));
 829         }
 830     }
 831     return 0;
 832 }
 833
 834 int main(int argc, char **argv)
 835 {
 836     initialize();
 837     if (argc > 1)
 838         cmd_open(argv[1]);
 839     else
 840         printf(C_PROMPT);
 841     return client();
 842 }