loginutils/cryptpw.c

   1 /* vi: set sw=4 ts=4: */
   2 /*
   3  * cryptpw.c
   4  *
   5  * Cooked from passwd.c by Thomas Lundquist <thomasez@zelow.no>
   6  */
   7
   8 #include "libbb.h"
   9
  10 #define TESTING 0
  11
  12 /*
  13 set TESTING to 1 and pipe some file through this script
  14 if you played with bbox's crypt implementation.
  15
  16 while read line; do
  17         n=`./busybox cryptpw -a des -- "$line"`
  18         o=`./busybox_org cryptpw -a des -- "$line"`
  19         test "$n" != "$o" && {
  20                 echo n="$n"
  21                 echo o="$o"
  22                 exit
  23         }
  24         n=`./busybox cryptpw -- "$line"`
  25         o=`./busybox_org cryptpw -- "$line"`
  26         test "$n" != "$o" && {
  27                 echo n="$n"
  28                 echo o="$o"
  29                 exit
  30         }
  31 done
  32  */
  33
  34 int cryptpw_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
  35 int cryptpw_main(int argc UNUSED_PARAM, char **argv)
  36 {
  37         char salt[sizeof("$N$") + 16 + TESTING*100];
  38         char *opt_a;
  39         int opts;
  40
  41         opts = getopt32(argv, "a:", &opt_a);
  42
  43         if (opts && opt_a[0] == 'd') {
  44                 crypt_make_salt(salt, 2/2, 0);     /* des */
  45 #if TESTING
  46                 strcpy(salt, "a.");
  47 #endif
  48         } else {
  49                 salt[0] = '$';
  50                 salt[1] = '1';
  51                 salt[2] = '$';
  52 #if !ENABLE_USE_BB_CRYPT || ENABLE_USE_BB_CRYPT_SHA
  53                 if (opts && opt_a[0] == 's') {
  54                         salt[1] = '5' + (strcmp(opt_a, "sha512") == 0);
  55                         crypt_make_salt(salt + 3, 16/2, 0); /* sha */
  56 #if TESTING
  57                         strcpy(salt, "$5$rounds=5000$toolongsaltstring");
  58                         // with "This is just a test" as password, should produce:
  59                         // "$5$rounds=5000$toolongsaltstrin$Un/5jzAHMgOGZ5.mWJpuVolil07guHPvOW8mGRcvxa5"
  60                         strcpy(salt, "$6$rounds=5000$toolongsaltstring");
  61                         // with "This is just a test" as password, should produce:
  62                         // "$6$rounds=5000$toolongsaltstrin$lQ8jolhgVRVhY4b5pZKaysCLi0QBxGoNeKQzQ3glMhwllF7oGDZxUhx1yxdYcz/e1JSbq3y6JMxxl8audkUEm0"
  63 #endif
  64                 } else
  65 #endif
  66                 {
  67                         crypt_make_salt(salt + 3, 8/2, 0); /* md5 */
  68 #if TESTING
  69                         strcpy(salt + 3, "ajg./bcf");
  70 #endif
  71                 }
  72         }
  73
  74         puts(pw_encrypt(argv[optind] ? argv[optind] : xmalloc_fgetline(stdin), salt, 1));
  75
  76         return 0;
  77 }