userdb/userdbmkpw.c

   1 /*
   2 ** Copyright 2001 Double Precision, Inc.
   3 ** See COPYING for distribution information.
   4 */
   5
   6 #if     HAVE_CONFIG_H
   7 #include        "config.h"
   8 #endif
   9 #include        <sys/types.h>
  10 #if     HAVE_SYS_STAT_H
  11 #include        <sys/stat.h>
  12 #endif
  13 #if     HAVE_FCNTL_H
  14 #include        <fcntl.h>
  15 #endif
  16 #if     HAVE_UNISTD_H
  17 #include        <unistd.h>
  18 #endif
  19 #if TIME_WITH_SYS_TIME
  20 #include <sys/time.h>
  21 #include <time.h>
  22 #else
  23 #if HAVE_SYS_TIME_H
  24 #include <sys/time.h>
  25 #else
  26 #include <time.h>
  27 #endif
  28 #endif
  29 #if     HAVE_MD5
  30 #include        "md5/md5.h"
  31 #endif
  32
  33 #include        <string.h>
  34 #include        <stdio.h>
  35 #include        <signal.h>
  36 #include        <stdlib.h>
  37 #if     HAVE_TERMIOS_H
  38 #include        <termios.h>
  39 #endif
  40 #if     HAVE_CRYPT_H
  41 #include        <crypt.h>
  42 #endif
  43
  44 #if HAVE_CRYPT
  45 #if NEED_CRYPT_PROTOTYPE
  46 extern char *crypt(const char *, const char *);
  47 #endif
  48 #endif
  49
  50 char userdb_hex64[]="./0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
  51
  52 #ifdef  RANDOM
  53 void userdb_get_random(char *buf, unsigned n)
  54 {
  55 int     f=open(RANDOM, O_RDONLY);
  56 int     l;
  57
  58         if (f < 0)
  59         {
  60                 perror(RANDOM);
  61                 exit(1);
  62         }
  63         while (n)
  64         {
  65                 l=read(f, buf, n);
  66                 if (l < 0)
  67                 {
  68                         perror("read");
  69                         exit(1);
  70                 }
  71                 n -= l;
  72                 buf += l;
  73         }
  74         close(f);
  75 }
  76 #endif
  77
  78 #if     HAVE_MD5
  79 char *userdb_mkmd5pw(const char *buf)
  80 {
  81         int     i;
  82         char salt[9];
  83
  84         salt[8]=0;
  85 #ifdef  RANDOM
  86         userdb_get_random(salt, 8);
  87         for (i=0; i<8; i++)
  88                 salt[i] = userdb_hex64[salt[i] & 63 ];
  89
  90 #else
  91         {
  92
  93                 struct {
  94 #if HAVE_GETTIMEOFDAY
  95                         struct timeval tv;
  96 #else
  97                         time_t  tv;
  98 #endif
  99                         pid_t   p;
 100                 } s;
 101
 102                 MD5_DIGEST      d;
 103 #if HAVE_GETTIMEOFDAY
 104                 struct timezone tz;
 105
 106                 gettimeofday(&s.tv, &tz);
 107 #else
 108                 time(&s.tv);
 109 #endif
 110                 s.p=getpid();
 111
 112                 md5_digest(&s, sizeof(s), d);
 113                 for (i=0; i<8; i++)
 114                         salt[i]=userdb_hex64[ ((unsigned char *)d)[i] ];
 115         }
 116 #endif
 117         return (md5_crypt(buf, salt));
 118 }
 119 #endif