libs/nixio/axTLS/httpd/htpasswd.c

   1 /*
   2  * Copyright (c) 2007, Cameron Rich
   3  *
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions are met:
   8  *
   9  * * Redistributions of source code must retain the above copyright notice,
  10  *   this list of conditions and the following disclaimer.
  11  * * Redistributions in binary form must reproduce the above copyright notice,
  12  *   this list of conditions and the following disclaimer in the documentation
  13  *   and/or other materials provided with the distribution.
  14  * * Neither the name of the axTLS project nor the names of its contributors
  15  *   may be used to endorse or promote products derived from this software
  16  *   without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  22  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  23  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  24  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  25  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  26  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  27  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  28  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31 #include <stdio.h>
  32 #include <string.h>
  33 #include <stdlib.h>
  34 #include "ssl.h"
  35
  36 int tfd;
  37
  38 void base64_encode(const uint8_t *in, size_t inlen, char *out, size_t outlen)
  39 {
  40     static const char b64str[64] =
  41             "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
  42
  43     while (inlen && outlen)
  44     {
  45         *out++ = b64str[(in[0] >> 2) & 0x3f];
  46         if (!--outlen)
  47             break;
  48
  49         *out++ = b64str[((in[0] << 4)
  50                 + (--inlen ? in[1] >> 4 : 0)) & 0x3f];
  51         if (!--outlen)
  52             break;
  53         *out++ = (inlen
  54              ? b64str[((in[1] << 2)
  55                  + (--inlen ? in[2] >> 6 : 0))
  56              & 0x3f]
  57              : '=');
  58         if (!--outlen)
  59             break;
  60         *out++ = inlen ? b64str[in[2] & 0x3f] : '=';
  61         if (!--outlen)
  62             break;
  63         if (inlen)
  64             inlen--;
  65         if (inlen)
  66             in += 3;
  67     }
  68
  69     if (outlen)
  70         *out = '\0';
  71 }
  72
  73 static void usage(void)
  74 {
  75     fprintf(stderr,"Usage: htpasswd username\n");
  76     exit(1);
  77 }
  78
  79 #ifdef WIN32
  80 static char * getpass(const char *prompt)
  81 {
  82     static char buf[127];
  83     FILE *fp = stdin;
  84
  85     printf(prompt); TTY_FLUSH();
  86 #if 0
  87     fp = fopen("/dev/tty", "w");
  88     if (fp == NULL)
  89     {
  90         printf("null\n"); TTY_FLUSH();
  91         fp = stdin;
  92     }
  93 #endif
  94
  95     fgets(buf, sizeof(buf), fp);
  96     while (buf[strlen(buf)-1] < ' ')
  97         buf[strlen(buf)-1] = '\0';
  98
  99     //if (fp != stdin)
 100     //    fclose(fp);
 101     return buf;
 102 }
 103 #endif
 104
 105 int main(int argc, char *argv[])
 106 {
 107     char* pw;
 108     uint8_t md5_salt[MD5_SIZE], md5_pass[MD5_SIZE];
 109     char b64_salt[MD5_SIZE+10], b64_pass[MD5_SIZE+10];
 110     MD5_CTX ctx;
 111
 112     if (argc != 2)
 113         usage();
 114
 115     pw = strdup(getpass("New password:"));
 116     if (strcmp(pw, getpass("Re-type new password:")) != 0)
 117     {
 118         fprintf(stderr, "They don't match, sorry.\n" );
 119         exit(1);
 120     }
 121
 122     RNG_initialize((uint8_t *)pw, sizeof(pw));
 123     get_random(MD5_SIZE, md5_salt);
 124     RNG_terminate();
 125     base64_encode(md5_salt, MD5_SIZE, b64_salt, sizeof(b64_salt));
 126
 127     MD5_Init(&ctx);
 128     MD5_Update(&ctx, md5_salt, MD5_SIZE);
 129     MD5_Update(&ctx, (uint8_t *)pw, strlen(pw));
 130     MD5_Final(md5_pass, &ctx);
 131     base64_encode(md5_pass, MD5_SIZE, b64_pass, sizeof(b64_pass));
 132
 133     printf("Add the following to your '.htpasswd' file\n");
 134     printf("%s:%s$%s\n", argv[1], b64_salt, b64_pass);
 135     return 0;
 136 }