nsprpub/pr/tests/randseed.c

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   3  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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  11  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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  14  *
  15  * The Original Code is the Netscape Portable Runtime (NSPR).
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  36  * ***** END LICENSE BLOCK ***** */
  37
  38 /*
  39 ** File: rngseed.c
  40 ** Description:
  41 ** Test NSPR's Random Number Seed generator
  42 **
  43 ** Initial test: Just make sure it outputs some data.
  44 **
  45 ** ... more? ... check some iterations to ensure it is random (no dupes)
  46 ** ... more? ... histogram distribution of random numbers
  47 */
  48
  49 #include "plgetopt.h"
  50 #include "nspr.h"
  51 #include "prrng.h"
  52 #include <stdio.h>
  53 #include <stdlib.h>
  54 #include <string.h>
  55
  56 /*
  57 ** Test harness infrastructure
  58 */
  59 PRLogModuleInfo *lm;
  60 PRLogModuleLevel msgLevel = PR_LOG_NONE;
  61 PRIntn  debug = 0;
  62 PRUint32  failed_already = 0;
  63 /* end Test harness infrastructure */
  64
  65 PRIntn  optRandCount = 30;
  66 char    buf[40];
  67 PRSize  bufSize = sizeof(buf);
  68 PRSize  rSize;
  69 PRIntn  i;
  70
  71 /*
  72 ** Emit help text for this test
  73 */
  74 static void Help( void )
  75 {
  76     printf("Template: Help(): display your help message(s) here");
  77     exit(1);
  78 } /* end Help() */
  79
  80 static void PrintRand( void *buf, PRIntn size )
  81 {
  82     PRUint32 *rp = buf;
  83     PRIntn   i;
  84
  85     printf("%4.4d--\n", size );
  86     while (size > 0 ) {
  87         switch( size )  {
  88             case 1 :
  89                 printf("%2.2X\n", *(rp++) );
  90                 size -= 4;
  91                 break;
  92             case 2 :
  93                 printf("%4.4X\n", *(rp++) );
  94                 size -= 4;
  95                 break;
  96             case 3 :
  97                 printf("%6.6X\n", *(rp++) );
  98                 size -= 4;
  99                 break;
 100             default:
 101                 while ( size >= 4) {
 102                     PRIntn i = 3;
 103                     do {
 104                         printf("%8.8X ", *(rp++) );
 105                         size -= 4;
 106                     } while( i-- );
 107                     i = 3;
 108                     printf("\n");
 109                 }
 110                 break;
 111         } /* end switch() */
 112     } /* end while() */
 113 } /* end PrintRand() */
 114
 115
 116 PRIntn main(PRIntn argc, char *argv[])
 117 {
 118     {
 119         /*
 120         ** Get command line options
 121         */
 122         PLOptStatus os;
 123         PLOptState *opt = PL_CreateOptState(argc, argv, "hdv");
 124
 125             while (PL_OPT_EOL != (os = PL_GetNextOpt(opt)))
 126         {
 127                     if (PL_OPT_BAD == os) continue;
 128             switch (opt->option)
 129             {
 130             case 'd':  /* debug */
 131                 debug = 1;
 132                             msgLevel = PR_LOG_ERROR;
 133                 break;
 134             case 'v':  /* verbose mode */
 135                             msgLevel = PR_LOG_DEBUG;
 136                 break;
 137             case 'h':  /* help message */
 138                             Help();
 139                 break;
 140              default:
 141                 break;
 142             }
 143         }
 144             PL_DestroyOptState(opt);
 145     }
 146
 147     lm = PR_NewLogModule("Test");       /* Initialize logging */
 148     for ( i = 0; i < optRandCount ; i++ ) {
 149         memset( buf, 0, bufSize );
 150         rSize = PR_GetRandomNoise( buf, bufSize );
 151         if (!rSize) {
 152             fprintf(stderr, "Not implemented\n" );
 153             failed_already = PR_TRUE;
 154             break;
 155         }
 156         if (debug) PrintRand( buf, rSize );
 157     }
 158
 159     if (debug) printf("%s\n", (failed_already)? "FAIL" : "PASS");
 160     return( (failed_already == PR_TRUE )? 1 : 0 );
 161 }  /* main() */
 162 /* end template.c */
 163