mirror of
https://github.com/openssl/openssl.git
synced 2024-11-27 05:21:51 +08:00
503 lines
16 KiB
C
503 lines
16 KiB
C
/* ====================================================================
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* Copyright (c) 2000-2015 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* licensing@OpenSSL.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*/
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#if defined OPENSSL_NO_MD5 || defined CHARSET_EBCDIC
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# define NO_MD5CRYPT_1
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#endif
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#if !defined(OPENSSL_NO_DES) || !defined(NO_MD5CRYPT_1)
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# include <string.h>
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# include "apps.h"
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# include <openssl/bio.h>
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# include <openssl/err.h>
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# include <openssl/evp.h>
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# include <openssl/rand.h>
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# ifndef OPENSSL_NO_DES
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# include <openssl/des.h>
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# endif
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# ifndef NO_MD5CRYPT_1
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# include <openssl/md5.h>
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# endif
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static unsigned const char cov_2char[64] = {
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/* from crypto/des/fcrypt.c */
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0x2E, 0x2F, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35,
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0x36, 0x37, 0x38, 0x39, 0x41, 0x42, 0x43, 0x44,
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0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C,
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0x4D, 0x4E, 0x4F, 0x50, 0x51, 0x52, 0x53, 0x54,
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0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x61, 0x62,
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0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A,
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0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70, 0x71, 0x72,
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0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A
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};
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static int do_passwd(int passed_salt, char **salt_p, char **salt_malloc_p,
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char *passwd, BIO *out, int quiet, int table,
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int reverse, size_t pw_maxlen, int usecrypt, int use1,
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int useapr1);
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typedef enum OPTION_choice {
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OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
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OPT_IN,
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OPT_NOVERIFY, OPT_QUIET, OPT_TABLE, OPT_REVERSE, OPT_APR1,
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OPT_1, OPT_CRYPT, OPT_SALT, OPT_STDIN
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} OPTION_CHOICE;
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OPTIONS passwd_options[] = {
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{"help", OPT_HELP, '-', "Display this summary"},
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{"in", OPT_IN, '<', "Pead passwords from file"},
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{"noverify", OPT_NOVERIFY, '-',
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"Never verify when reading password from terminal"},
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{"quiet", OPT_QUIET, '-', "No warnings"},
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{"table", OPT_TABLE, '-', "Format output as table"},
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{"reverse", OPT_REVERSE, '-', "Switch table columns"},
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{"salt", OPT_SALT, 's', "Use provided salt"},
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{"stdin", OPT_STDIN, '-', "Read passwords from stdin"},
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# ifndef NO_MD5CRYPT_1
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{"apr1", OPT_APR1, '-', "MD5-based password algorithm, Apache variant"},
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{"1", OPT_1, '-', "MD5-based password algorithm"},
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# endif
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# ifndef OPENSSL_NO_DES
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{"crypt", OPT_CRYPT, '-', "Standard Unix password algorithm (default)"},
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# endif
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{NULL}
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};
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int passwd_main(int argc, char **argv)
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{
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BIO *in = NULL;
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char *infile = NULL, *salt = NULL, *passwd = NULL, **passwds = NULL;
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char *salt_malloc = NULL, *passwd_malloc = NULL, *prog;
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OPTION_CHOICE o;
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int in_stdin = 0, in_noverify = 0, pw_source_defined = 0;
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int passed_salt = 0, quiet = 0, table = 0, reverse = 0;
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int ret = 1, usecrypt = 0, use1 = 0, useapr1 = 0;
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size_t passwd_malloc_size = 0, pw_maxlen = 256;
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prog = opt_init(argc, argv, passwd_options);
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while ((o = opt_next()) != OPT_EOF) {
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switch (o) {
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case OPT_EOF:
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case OPT_ERR:
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opthelp:
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BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
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goto end;
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case OPT_HELP:
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opt_help(passwd_options);
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ret = 0;
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goto end;
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case OPT_IN:
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if (pw_source_defined)
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goto opthelp;
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infile = opt_arg();
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pw_source_defined = 1;
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break;
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case OPT_NOVERIFY:
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in_noverify = 1;
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break;
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case OPT_QUIET:
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quiet = 1;
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break;
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case OPT_TABLE:
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table = 1;
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break;
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case OPT_REVERSE:
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reverse = 1;
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break;
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case OPT_1:
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use1 = 1;
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break;
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case OPT_APR1:
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useapr1 = 1;
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break;
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case OPT_CRYPT:
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usecrypt = 1;
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break;
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case OPT_SALT:
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passed_salt = 1;
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salt = opt_arg();
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break;
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case OPT_STDIN:
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if (pw_source_defined)
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goto opthelp;
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in_stdin = 1;
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break;
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}
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}
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argc = opt_num_rest();
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argv = opt_rest();
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if (*argv) {
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if (pw_source_defined)
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goto opthelp;
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pw_source_defined = 1;
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passwds = argv;
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}
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if (!usecrypt && !use1 && !useapr1) {
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/* use default */
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usecrypt = 1;
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}
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if (usecrypt + use1 + useapr1 > 1) {
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/* conflict */
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goto opthelp;
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}
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# ifdef OPENSSL_NO_DES
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if (usecrypt)
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goto opthelp;
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# endif
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# ifdef NO_MD5CRYPT_1
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if (use1 || useapr1)
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goto opthelp;
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# endif
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if (infile && in_stdin) {
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BIO_printf(bio_err, "%s: Can't combine -in and -stdin\n", prog);
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goto end;
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}
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in = bio_open_default(infile, 'r', FORMAT_TEXT);
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if (in == NULL)
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goto end;
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if (usecrypt)
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pw_maxlen = 8;
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else if (use1 || useapr1)
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pw_maxlen = 256; /* arbitrary limit, should be enough for most
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* passwords */
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if (passwds == NULL) {
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/* no passwords on the command line */
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passwd_malloc_size = pw_maxlen + 2;
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/* longer than necessary so that we can warn about truncation */
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passwd = passwd_malloc =
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app_malloc(passwd_malloc_size, "password buffer");
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}
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if ((in == NULL) && (passwds == NULL)) {
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/* build a null-terminated list */
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static char *passwds_static[2] = { NULL, NULL };
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passwds = passwds_static;
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if (in == NULL)
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if (EVP_read_pw_string
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(passwd_malloc, passwd_malloc_size, "Password: ",
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!(passed_salt || in_noverify)) != 0)
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goto end;
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passwds[0] = passwd_malloc;
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}
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if (in == NULL) {
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assert(passwds != NULL);
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assert(*passwds != NULL);
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do { /* loop over list of passwords */
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passwd = *passwds++;
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if (!do_passwd(passed_salt, &salt, &salt_malloc, passwd, bio_out,
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quiet, table, reverse, pw_maxlen, usecrypt, use1,
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useapr1))
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goto end;
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}
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while (*passwds != NULL);
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} else
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/* in != NULL */
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{
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int done;
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assert(passwd != NULL);
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do {
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int r = BIO_gets(in, passwd, pw_maxlen + 1);
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if (r > 0) {
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char *c = (strchr(passwd, '\n'));
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if (c != NULL)
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*c = 0; /* truncate at newline */
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else {
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/* ignore rest of line */
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char trash[BUFSIZ];
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do
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r = BIO_gets(in, trash, sizeof trash);
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while ((r > 0) && (!strchr(trash, '\n')));
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}
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if (!do_passwd
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(passed_salt, &salt, &salt_malloc, passwd, bio_out, quiet,
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table, reverse, pw_maxlen, usecrypt, use1, useapr1))
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goto end;
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}
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done = (r <= 0);
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}
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while (!done);
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}
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ret = 0;
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end:
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ERR_print_errors(bio_err);
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OPENSSL_free(salt_malloc);
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OPENSSL_free(passwd_malloc);
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BIO_free(in);
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return (ret);
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}
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# ifndef NO_MD5CRYPT_1
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/*
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* MD5-based password algorithm (should probably be available as a library
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* function; then the static buffer would not be acceptable). For magic
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* string "1", this should be compatible to the MD5-based BSD password
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* algorithm. For 'magic' string "apr1", this is compatible to the MD5-based
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* Apache password algorithm. (Apparently, the Apache password algorithm is
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* identical except that the 'magic' string was changed -- the laziest
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* application of the NIH principle I've ever encountered.)
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*/
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static char *md5crypt(const char *passwd, const char *magic, const char *salt)
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{
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/* "$apr1$..salt..$.......md5hash..........\0" */
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static char out_buf[6 + 9 + 24 + 2];
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unsigned char buf[MD5_DIGEST_LENGTH];
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char *salt_out;
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int n;
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unsigned int i;
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EVP_MD_CTX *md, *md2;
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size_t passwd_len, salt_len;
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passwd_len = strlen(passwd);
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out_buf[0] = '$';
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out_buf[1] = 0;
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assert(strlen(magic) <= 4); /* "1" or "apr1" */
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strncat(out_buf, magic, 4);
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strncat(out_buf, "$", 1);
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strncat(out_buf, salt, 8);
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assert(strlen(out_buf) <= 6 + 8); /* "$apr1$..salt.." */
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salt_out = out_buf + 2 + strlen(magic);
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salt_len = strlen(salt_out);
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assert(salt_len <= 8);
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md = EVP_MD_CTX_new();
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if (md == NULL)
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return NULL;
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EVP_DigestInit_ex(md, EVP_md5(), NULL);
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EVP_DigestUpdate(md, passwd, passwd_len);
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EVP_DigestUpdate(md, "$", 1);
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EVP_DigestUpdate(md, magic, strlen(magic));
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EVP_DigestUpdate(md, "$", 1);
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EVP_DigestUpdate(md, salt_out, salt_len);
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md2 = EVP_MD_CTX_new();
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if (md2 == NULL)
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return NULL;
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EVP_DigestInit_ex(md2, EVP_md5(), NULL);
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EVP_DigestUpdate(md2, passwd, passwd_len);
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EVP_DigestUpdate(md2, salt_out, salt_len);
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EVP_DigestUpdate(md2, passwd, passwd_len);
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EVP_DigestFinal_ex(md2, buf, NULL);
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for (i = passwd_len; i > sizeof buf; i -= sizeof buf)
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EVP_DigestUpdate(md, buf, sizeof buf);
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EVP_DigestUpdate(md, buf, i);
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n = passwd_len;
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while (n) {
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EVP_DigestUpdate(md, (n & 1) ? "\0" : passwd, 1);
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n >>= 1;
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}
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EVP_DigestFinal_ex(md, buf, NULL);
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for (i = 0; i < 1000; i++) {
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EVP_DigestInit_ex(md2, EVP_md5(), NULL);
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EVP_DigestUpdate(md2, (i & 1) ? (unsigned const char *)passwd : buf,
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(i & 1) ? passwd_len : sizeof buf);
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if (i % 3)
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EVP_DigestUpdate(md2, salt_out, salt_len);
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if (i % 7)
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EVP_DigestUpdate(md2, passwd, passwd_len);
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EVP_DigestUpdate(md2, (i & 1) ? buf : (unsigned const char *)passwd,
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(i & 1) ? sizeof buf : passwd_len);
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EVP_DigestFinal_ex(md2, buf, NULL);
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}
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EVP_MD_CTX_free(md2);
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EVP_MD_CTX_free(md);
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{
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/* transform buf into output string */
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unsigned char buf_perm[sizeof buf];
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int dest, source;
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char *output;
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/* silly output permutation */
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for (dest = 0, source = 0; dest < 14;
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dest++, source = (source + 6) % 17)
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buf_perm[dest] = buf[source];
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buf_perm[14] = buf[5];
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buf_perm[15] = buf[11];
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# ifndef PEDANTIC /* Unfortunately, this generates a "no
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* effect" warning */
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assert(16 == sizeof buf_perm);
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# endif
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output = salt_out + salt_len;
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assert(output == out_buf + strlen(out_buf));
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*output++ = '$';
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for (i = 0; i < 15; i += 3) {
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*output++ = cov_2char[buf_perm[i + 2] & 0x3f];
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*output++ = cov_2char[((buf_perm[i + 1] & 0xf) << 2) |
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(buf_perm[i + 2] >> 6)];
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*output++ = cov_2char[((buf_perm[i] & 3) << 4) |
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(buf_perm[i + 1] >> 4)];
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*output++ = cov_2char[buf_perm[i] >> 2];
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}
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assert(i == 15);
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*output++ = cov_2char[buf_perm[i] & 0x3f];
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*output++ = cov_2char[buf_perm[i] >> 6];
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*output = 0;
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assert(strlen(out_buf) < sizeof(out_buf));
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}
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return out_buf;
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}
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# endif
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static int do_passwd(int passed_salt, char **salt_p, char **salt_malloc_p,
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char *passwd, BIO *out, int quiet, int table,
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int reverse, size_t pw_maxlen, int usecrypt, int use1,
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int useapr1)
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{
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char *hash = NULL;
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assert(salt_p != NULL);
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assert(salt_malloc_p != NULL);
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/* first make sure we have a salt */
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if (!passed_salt) {
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# ifndef OPENSSL_NO_DES
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if (usecrypt) {
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if (*salt_malloc_p == NULL) {
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*salt_p = *salt_malloc_p = app_malloc(3, "salt buffer");
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}
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if (RAND_bytes((unsigned char *)*salt_p, 2) <= 0)
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goto end;
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(*salt_p)[0] = cov_2char[(*salt_p)[0] & 0x3f]; /* 6 bits */
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(*salt_p)[1] = cov_2char[(*salt_p)[1] & 0x3f]; /* 6 bits */
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(*salt_p)[2] = 0;
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# ifdef CHARSET_EBCDIC
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ascii2ebcdic(*salt_p, *salt_p, 2); /* des_crypt will convert back
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* to ASCII */
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# endif
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}
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# endif /* !OPENSSL_NO_DES */
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# ifndef NO_MD5CRYPT_1
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if (use1 || useapr1) {
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int i;
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if (*salt_malloc_p == NULL) {
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*salt_p = *salt_malloc_p = app_malloc(9, "salt buffer");
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}
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if (RAND_bytes((unsigned char *)*salt_p, 8) <= 0)
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goto end;
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for (i = 0; i < 8; i++)
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(*salt_p)[i] = cov_2char[(*salt_p)[i] & 0x3f]; /* 6 bits */
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(*salt_p)[8] = 0;
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}
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# endif /* !NO_MD5CRYPT_1 */
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}
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assert(*salt_p != NULL);
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/* truncate password if necessary */
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if ((strlen(passwd) > pw_maxlen)) {
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if (!quiet)
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/*
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* XXX: really we should know how to print a size_t, not cast it
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*/
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BIO_printf(bio_err,
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"Warning: truncating password to %u characters\n",
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(unsigned)pw_maxlen);
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passwd[pw_maxlen] = 0;
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}
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assert(strlen(passwd) <= pw_maxlen);
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/* now compute password hash */
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# ifndef OPENSSL_NO_DES
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if (usecrypt)
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hash = DES_crypt(passwd, *salt_p);
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# endif
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# ifndef NO_MD5CRYPT_1
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if (use1 || useapr1)
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hash = md5crypt(passwd, (use1 ? "1" : "apr1"), *salt_p);
|
|
# endif
|
|
assert(hash != NULL);
|
|
|
|
if (table && !reverse)
|
|
BIO_printf(out, "%s\t%s\n", passwd, hash);
|
|
else if (table && reverse)
|
|
BIO_printf(out, "%s\t%s\n", hash, passwd);
|
|
else
|
|
BIO_printf(out, "%s\n", hash);
|
|
return 0;
|
|
|
|
end:
|
|
return 1;
|
|
}
|
|
#else
|
|
|
|
int passwd_main(int argc, char **argv)
|
|
{
|
|
BIO_printf(bio_err, "Program not available.\n");
|
|
return (1);
|
|
}
|
|
#endif
|