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openssl/apps/passwd.c
Richard Levitte 48feaceb53 Remove the possibility to disable the UI module entirely 
Instead, make it possible to disable the console reader that's part of
the UI module.  This makes it possible to use the UI API and other UI
methods in environments where the console reader isn't useful.

To disable the console reader, configure with 'no-ui-console' /
'disable-ui-console'.

'no-ui' / 'disable-ui' is now an alias for  'no-ui-console' /
'disable-ui-console'.

Fixes #3806

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3820)
2017-07-03 07:51:04 +02:00

846 lines
26 KiB
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/*
* Copyright 2000-2017 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#if defined OPENSSL_NO_MD5 || defined CHARSET_EBCDIC
# define NO_MD5CRYPT_1
#endif
#if defined OPENSSL_NO_SHA || defined CHARSET_EBCDIC
# define NO_SHACRYPT
#endif
#if !defined(OPENSSL_NO_DES) || !defined(NO_MD5CRYPT_1) || !defined(NO_SHACRYPT)
# include <string.h>
# include "apps.h"
# include <openssl/bio.h>
# include <openssl/err.h>
# include <openssl/evp.h>
# include <openssl/rand.h>
# ifndef OPENSSL_NO_DES
# include <openssl/des.h>
# endif
# ifndef NO_MD5CRYPT_1
# include <openssl/md5.h>
# endif
# ifndef NO_SHACRYPT
# include <openssl/sha.h>
# endif
static unsigned const char cov_2char[64] = {
/* from crypto/des/fcrypt.c */
0x2E, 0x2F, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35,
0x36, 0x37, 0x38, 0x39, 0x41, 0x42, 0x43, 0x44,
0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C,
0x4D, 0x4E, 0x4F, 0x50, 0x51, 0x52, 0x53, 0x54,
0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x61, 0x62,
0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A,
0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70, 0x71, 0x72,
0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A
};
typedef enum {
passwd_unset = 0,
passwd_crypt,
passwd_md5,
passwd_apr1,
passwd_sha256,
passwd_sha512,
passwd_aixmd5
} passwd_modes;
static int do_passwd(int passed_salt, char **salt_p, char **salt_malloc_p,
char *passwd, BIO *out, int quiet, int table,
int reverse, size_t pw_maxlen, passwd_modes mode);
typedef enum OPTION_choice {
OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
OPT_IN,
OPT_NOVERIFY, OPT_QUIET, OPT_TABLE, OPT_REVERSE, OPT_APR1,
OPT_1, OPT_5, OPT_6, OPT_CRYPT, OPT_AIXMD5, OPT_SALT, OPT_STDIN
} OPTION_CHOICE;
const OPTIONS passwd_options[] = {
{"help", OPT_HELP, '-', "Display this summary"},
{"in", OPT_IN, '<', "Read passwords from file"},
{"noverify", OPT_NOVERIFY, '-',
"Never verify when reading password from terminal"},
{"quiet", OPT_QUIET, '-', "No warnings"},
{"table", OPT_TABLE, '-', "Format output as table"},
{"reverse", OPT_REVERSE, '-', "Switch table columns"},
{"salt", OPT_SALT, 's', "Use provided salt"},
{"stdin", OPT_STDIN, '-', "Read passwords from stdin"},
# ifndef NO_SHACRYPT
{"6", OPT_6, '-', "SHA512-based password algorithm"},
{"5", OPT_5, '-', "SHA256-based password algorithm"},
# endif
# ifndef NO_MD5CRYPT_1
{"apr1", OPT_APR1, '-', "MD5-based password algorithm, Apache variant"},
{"1", OPT_1, '-', "MD5-based password algorithm"},
{"aixmd5", OPT_AIXMD5, '-', "AIX MD5-based password algorithm"},
# endif
# ifndef OPENSSL_NO_DES
{"crypt", OPT_CRYPT, '-', "Standard Unix password algorithm (default)"},
# endif
{NULL}
};
int passwd_main(int argc, char **argv)
{
BIO *in = NULL;
char *infile = NULL, *salt = NULL, *passwd = NULL, **passwds = NULL;
char *salt_malloc = NULL, *passwd_malloc = NULL, *prog;
OPTION_CHOICE o;
int in_stdin = 0, pw_source_defined = 0;
# ifndef OPENSSL_NO_UI_CONSOLE
int in_noverify = 0;
# endif
int passed_salt = 0, quiet = 0, table = 0, reverse = 0;
int ret = 1;
passwd_modes mode = passwd_unset;
size_t passwd_malloc_size = 0;
size_t pw_maxlen = 256; /* arbitrary limit, should be enough for most
* passwords */
prog = opt_init(argc, argv, passwd_options);
while ((o = opt_next()) != OPT_EOF) {
switch (o) {
case OPT_EOF:
case OPT_ERR:
opthelp:
BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
goto end;
case OPT_HELP:
opt_help(passwd_options);
ret = 0;
goto end;
case OPT_IN:
if (pw_source_defined)
goto opthelp;
infile = opt_arg();
pw_source_defined = 1;
break;
case OPT_NOVERIFY:
# ifndef OPENSSL_NO_UI_CONSOLE
in_noverify = 1;
# endif
break;
case OPT_QUIET:
quiet = 1;
break;
case OPT_TABLE:
table = 1;
break;
case OPT_REVERSE:
reverse = 1;
break;
case OPT_1:
if (mode != passwd_unset)
goto opthelp;
mode = passwd_md5;
break;
case OPT_5:
if (mode != passwd_unset)
goto opthelp;
mode = passwd_sha256;
break;
case OPT_6:
if (mode != passwd_unset)
goto opthelp;
mode = passwd_sha512;
break;
case OPT_APR1:
if (mode != passwd_unset)
goto opthelp;
mode = passwd_apr1;
break;
case OPT_AIXMD5:
if (mode != passwd_unset)
goto opthelp;
mode = passwd_aixmd5;
break;
case OPT_CRYPT:
if (mode != passwd_unset)
goto opthelp;
mode = passwd_crypt;
break;
case OPT_SALT:
passed_salt = 1;
salt = opt_arg();
break;
case OPT_STDIN:
if (pw_source_defined)
goto opthelp;
in_stdin = 1;
pw_source_defined = 1;
break;
}
}
argc = opt_num_rest();
argv = opt_rest();
if (*argv != NULL) {
if (pw_source_defined)
goto opthelp;
pw_source_defined = 1;
passwds = argv;
}
if (mode == passwd_unset) {
/* use default */
mode = passwd_crypt;
}
# ifdef OPENSSL_NO_DES
if (mode == passwd_crypt)
goto opthelp;
# endif
# ifdef NO_MD5CRYPT_1
if (mode == passwd_md5 || mode == passwd_apr1 || mode == passwd_aixmd5)
goto opthelp;
# endif
# ifdef NO_SHACRYPT
if (mode == passwd_sha256 || mode == passwd_sha512)
goto opthelp;
# endif
if (infile != NULL && in_stdin) {
BIO_printf(bio_err, "%s: Can't combine -in and -stdin\n", prog);
goto end;
}
if (infile != NULL || in_stdin) {
/*
* If in_stdin is true, we know that infile is NULL, and that
* bio_open_default() will give us back an alias for stdin.
*/
in = bio_open_default(infile, 'r', FORMAT_TEXT);
if (in == NULL)
goto end;
}
if (mode == passwd_crypt)
pw_maxlen = 8;
if (passwds == NULL) {
/* no passwords on the command line */
passwd_malloc_size = pw_maxlen + 2;
/* longer than necessary so that we can warn about truncation */
passwd = passwd_malloc =
app_malloc(passwd_malloc_size, "password buffer");
}
if ((in == NULL) && (passwds == NULL)) {
/*
* we use the following method to make sure what
* in the 'else' section is always compiled, to
* avoid rot of not-frequently-used code.
*/
if (1) {
# ifndef OPENSSL_NO_UI_CONSOLE
/* build a null-terminated list */
static char *passwds_static[2] = { NULL, NULL };
passwds = passwds_static;
if (in == NULL) {
if (EVP_read_pw_string
(passwd_malloc, passwd_malloc_size, "Password: ",
!(passed_salt || in_noverify)) != 0)
goto end;
}
passwds[0] = passwd_malloc;
} else {
# endif
BIO_printf(bio_err, "password required\n");
goto end;
}
}
if (in == NULL) {
assert(passwds != NULL);
assert(*passwds != NULL);
do { /* loop over list of passwords */
passwd = *passwds++;
if (!do_passwd(passed_salt, &salt, &salt_malloc, passwd, bio_out,
quiet, table, reverse, pw_maxlen, mode))
goto end;
} while (*passwds != NULL);
} else {
/* in != NULL */
int done;
assert(passwd != NULL);
do {
int r = BIO_gets(in, passwd, pw_maxlen + 1);
if (r > 0) {
char *c = (strchr(passwd, '\n'));
if (c != NULL) {
*c = 0; /* truncate at newline */
} else {
/* ignore rest of line */
char trash[BUFSIZ];
do
r = BIO_gets(in, trash, sizeof trash);
while ((r > 0) && (!strchr(trash, '\n')));
}
if (!do_passwd
(passed_salt, &salt, &salt_malloc, passwd, bio_out, quiet,
table, reverse, pw_maxlen, mode))
goto end;
}
done = (r <= 0);
} while (!done);
}
ret = 0;
end:
ERR_print_errors(bio_err);
OPENSSL_free(salt_malloc);
OPENSSL_free(passwd_malloc);
BIO_free(in);
return (ret);
}
# ifndef NO_MD5CRYPT_1
/*
* MD5-based password algorithm (should probably be available as a library
* function; then the static buffer would not be acceptable). For magic
* string "1", this should be compatible to the MD5-based BSD password
* algorithm. For 'magic' string "apr1", this is compatible to the MD5-based
* Apache password algorithm. (Apparently, the Apache password algorithm is
* identical except that the 'magic' string was changed -- the laziest
* application of the NIH principle I've ever encountered.)
*/
static char *md5crypt(const char *passwd, const char *magic, const char *salt)
{
/* "$apr1$..salt..$.......md5hash..........\0" */
static char out_buf[6 + 9 + 24 + 2];
unsigned char buf[MD5_DIGEST_LENGTH];
char *salt_out;
int n;
unsigned int i;
EVP_MD_CTX *md = NULL, *md2 = NULL;
size_t passwd_len, salt_len, magic_len;
passwd_len = strlen(passwd);
out_buf[0] = 0;
magic_len = strlen(magic);
if (magic_len > 0) {
out_buf[0] = '$';
out_buf[1] = 0;
if (magic_len > 4) /* assert it's "1" or "apr1" */
return NULL;
OPENSSL_strlcat(out_buf, magic, sizeof out_buf);
OPENSSL_strlcat(out_buf, "$", sizeof out_buf);
}
OPENSSL_strlcat(out_buf, salt, sizeof out_buf);
if (strlen(out_buf) > 6 + 8) /* assert "$apr1$..salt.." */
return NULL;
salt_out = out_buf;
if (magic_len > 0)
salt_out += 2 + magic_len;
salt_len = strlen(salt_out);
if (salt_len > 8)
return NULL;
md = EVP_MD_CTX_new();
if (md == NULL
|| !EVP_DigestInit_ex(md, EVP_md5(), NULL)
|| !EVP_DigestUpdate(md, passwd, passwd_len))
goto err;
if (magic_len > 0)
if (!EVP_DigestUpdate(md, "$", 1)
|| !EVP_DigestUpdate(md, magic, magic_len)
|| !EVP_DigestUpdate(md, "$", 1))
goto err;
if (!EVP_DigestUpdate(md, salt_out, salt_len))
goto err;
md2 = EVP_MD_CTX_new();
if (md2 == NULL
|| !EVP_DigestInit_ex(md2, EVP_md5(), NULL)
|| !EVP_DigestUpdate(md2, passwd, passwd_len)
|| !EVP_DigestUpdate(md2, salt_out, salt_len)
|| !EVP_DigestUpdate(md2, passwd, passwd_len)
|| !EVP_DigestFinal_ex(md2, buf, NULL))
goto err;
for (i = passwd_len; i > sizeof buf; i -= sizeof buf) {
if (!EVP_DigestUpdate(md, buf, sizeof buf))
goto err;
}
if (!EVP_DigestUpdate(md, buf, i))
goto err;
n = passwd_len;
while (n) {
if (!EVP_DigestUpdate(md, (n & 1) ? "\0" : passwd, 1))
goto err;
n >>= 1;
}
if (!EVP_DigestFinal_ex(md, buf, NULL))
return NULL;
for (i = 0; i < 1000; i++) {
if (!EVP_DigestInit_ex(md2, EVP_md5(), NULL))
goto err;
if (!EVP_DigestUpdate(md2,
(i & 1) ? (unsigned const char *)passwd : buf,
(i & 1) ? passwd_len : sizeof buf))
goto err;
if (i % 3) {
if (!EVP_DigestUpdate(md2, salt_out, salt_len))
goto err;
}
if (i % 7) {
if (!EVP_DigestUpdate(md2, passwd, passwd_len))
goto err;
}
if (!EVP_DigestUpdate(md2,
(i & 1) ? buf : (unsigned const char *)passwd,
(i & 1) ? sizeof buf : passwd_len))
goto err;
if (!EVP_DigestFinal_ex(md2, buf, NULL))
goto err;
}
EVP_MD_CTX_free(md2);
EVP_MD_CTX_free(md);
md2 = NULL;
md = NULL;
{
/* transform buf into output string */
unsigned char buf_perm[sizeof buf];
int dest, source;
char *output;
/* silly output permutation */
for (dest = 0, source = 0; dest < 14;
dest++, source = (source + 6) % 17)
buf_perm[dest] = buf[source];
buf_perm[14] = buf[5];
buf_perm[15] = buf[11];
# ifndef PEDANTIC /* Unfortunately, this generates a "no
* effect" warning */
assert(16 == sizeof buf_perm);
# endif
output = salt_out + salt_len;
assert(output == out_buf + strlen(out_buf));
*output++ = '$';
for (i = 0; i < 15; i += 3) {
*output++ = cov_2char[buf_perm[i + 2] & 0x3f];
*output++ = cov_2char[((buf_perm[i + 1] & 0xf) << 2) |
(buf_perm[i + 2] >> 6)];
*output++ = cov_2char[((buf_perm[i] & 3) << 4) |
(buf_perm[i + 1] >> 4)];
*output++ = cov_2char[buf_perm[i] >> 2];
}
assert(i == 15);
*output++ = cov_2char[buf_perm[i] & 0x3f];
*output++ = cov_2char[buf_perm[i] >> 6];
*output = 0;
assert(strlen(out_buf) < sizeof(out_buf));
}
return out_buf;
err:
EVP_MD_CTX_free(md2);
EVP_MD_CTX_free(md);
return NULL;
}
# endif
# ifndef NO_SHACRYPT
/*
* SHA based password algorithm, describe by Ulrich Drepper here:
* https://www.akkadia.org/drepper/SHA-crypt.txt
* (note that it's in the public domain)
*/
static char *shacrypt(const char *passwd, const char *magic, const char *salt)
{
/* Prefix for optional rounds specification. */
static const char rounds_prefix[] = "rounds=";
/* Maximum salt string length. */
# define SALT_LEN_MAX 16
/* Default number of rounds if not explicitly specified. */
# define ROUNDS_DEFAULT 5000
/* Minimum number of rounds. */
# define ROUNDS_MIN 1000
/* Maximum number of rounds. */
# define ROUNDS_MAX 999999999
/* "$6$rounds=<N>$......salt......$...shahash(up to 86 chars)...\0" */
static char out_buf[3 + 17 + 17 + 86 + 1];
unsigned char buf[SHA512_DIGEST_LENGTH];
unsigned char temp_buf[SHA512_DIGEST_LENGTH];
size_t buf_size = 0;
char salt_copy[17]; /* Max 16 chars plus '\0' */
size_t n;
EVP_MD_CTX *md = NULL, *md2 = NULL;
const EVP_MD *sha = NULL;
size_t passwd_len, salt_len, magic_len;
unsigned int rounds = 5000; /* Default */
char rounds_custom = 0;
char *p_bytes = NULL;
char *s_bytes = NULL;
char *cp = NULL;
passwd_len = strlen(passwd);
magic_len = strlen(magic);
/* assert it's "5" or "6" */
if (magic_len != 1)
return NULL;
switch (magic[0]) {
case '5':
sha = EVP_sha256();
buf_size = 32;
break;
case '6':
sha = EVP_sha512();
buf_size = 64;
break;
default:
return NULL;
}
if (strncmp(salt, rounds_prefix, sizeof(rounds_prefix) - 1) == 0) {
const char *num = salt + sizeof(rounds_prefix) - 1;
char *endp;
unsigned long int srounds = strtoul (num, &endp, 10);
if (*endp == '$') {
salt = endp + 1;
if (srounds > ROUNDS_MAX)
rounds = ROUNDS_MAX;
else if (srounds < ROUNDS_MIN)
rounds = ROUNDS_MIN;
else
rounds = (unsigned int)srounds;
rounds_custom = 1;
} else {
return NULL;
}
}
/* The salt gets truncated to 16 chars */
OPENSSL_strlcpy(salt_copy, salt, sizeof salt_copy);
salt_len = strlen(salt_copy);
out_buf[0] = 0;
OPENSSL_strlcat(out_buf, "$", sizeof out_buf);
OPENSSL_strlcat(out_buf, magic, sizeof out_buf);
OPENSSL_strlcat(out_buf, "$", sizeof out_buf);
if (rounds_custom) {
char tmp_buf[80]; /* "rounds=999999999" */
sprintf(tmp_buf, "rounds=%u", rounds);
OPENSSL_strlcat(out_buf, tmp_buf, sizeof out_buf);
OPENSSL_strlcat(out_buf, "$", sizeof out_buf);
}
OPENSSL_strlcat(out_buf, salt_copy, sizeof out_buf);
/* assert "$5$rounds=999999999$......salt......" */
if (strlen(out_buf) > 3 + 17 * rounds_custom + salt_len )
return NULL;
md = EVP_MD_CTX_new();
if (md == NULL
|| !EVP_DigestInit_ex(md, sha, NULL)
|| !EVP_DigestUpdate(md, passwd, passwd_len)
|| !EVP_DigestUpdate(md, salt_copy, salt_len))
goto err;
md2 = EVP_MD_CTX_new();
if (md2 == NULL
|| !EVP_DigestInit_ex(md2, sha, NULL)
|| !EVP_DigestUpdate(md2, passwd, passwd_len)
|| !EVP_DigestUpdate(md2, salt_copy, salt_len)
|| !EVP_DigestUpdate(md2, passwd, passwd_len)
|| !EVP_DigestFinal_ex(md2, buf, NULL))
goto err;
for (n = passwd_len; n > buf_size; n -= buf_size) {
if (!EVP_DigestUpdate(md, buf, buf_size))
goto err;
}
if (!EVP_DigestUpdate(md, buf, n))
goto err;
n = passwd_len;
while (n) {
if (!EVP_DigestUpdate(md,
(n & 1) ? buf : (unsigned const char *)passwd,
(n & 1) ? buf_size : passwd_len))
goto err;
n >>= 1;
}
if (!EVP_DigestFinal_ex(md, buf, NULL))
return NULL;
/* P sequence */
if (!EVP_DigestInit_ex(md2, sha, NULL))
goto err;
for (n = passwd_len; n > 0; n--)
if (!EVP_DigestUpdate(md2, passwd, passwd_len))
goto err;
if (!EVP_DigestFinal_ex(md2, temp_buf, NULL))
return NULL;
if ((p_bytes = OPENSSL_zalloc(passwd_len)) == NULL)
goto err;
for (cp = p_bytes, n = passwd_len; n > buf_size; n -= buf_size, cp += buf_size)
memcpy(cp, temp_buf, buf_size);
memcpy(cp, temp_buf, n);
/* S sequence */
if (!EVP_DigestInit_ex(md2, sha, NULL))
goto err;
for (n = 16 + buf[0]; n > 0; n--)
if (!EVP_DigestUpdate(md2, salt, salt_len))
goto err;
if (!EVP_DigestFinal_ex(md2, temp_buf, NULL))
return NULL;
if ((s_bytes = OPENSSL_zalloc(salt_len)) == NULL)
goto err;
for (cp = s_bytes, n = salt_len; n > buf_size; n -= buf_size, cp += buf_size)
memcpy(cp, temp_buf, buf_size);
memcpy(cp, temp_buf, n);
for (n = 0; n < rounds; n++) {
if (!EVP_DigestInit_ex(md2, sha, NULL))
goto err;
if (!EVP_DigestUpdate(md2,
(n & 1) ? (unsigned const char *)p_bytes : buf,
(n & 1) ? passwd_len : buf_size))
goto err;
if (n % 3) {
if (!EVP_DigestUpdate(md2, s_bytes, salt_len))
goto err;
}
if (n % 7) {
if (!EVP_DigestUpdate(md2, p_bytes, passwd_len))
goto err;
}
if (!EVP_DigestUpdate(md2,
(n & 1) ? buf : (unsigned const char *)p_bytes,
(n & 1) ? buf_size : passwd_len))
goto err;
if (!EVP_DigestFinal_ex(md2, buf, NULL))
goto err;
}
EVP_MD_CTX_free(md2);
EVP_MD_CTX_free(md);
md2 = NULL;
md = NULL;
OPENSSL_free(p_bytes);
OPENSSL_free(s_bytes);
p_bytes = NULL;
s_bytes = NULL;
cp = out_buf + strlen(out_buf);
*cp++ = '$';
# define b64_from_24bit(B2, B1, B0, N) \
do { \
unsigned int w = ((B2) << 16) | ((B1) << 8) | (B0); \
int i = (N); \
while (i-- > 0) \
{ \
*cp++ = cov_2char[w & 0x3f]; \
w >>= 6; \
} \
} while (0)
switch (*magic) {
case '5':
b64_from_24bit (buf[0], buf[10], buf[20], 4);
b64_from_24bit (buf[21], buf[1], buf[11], 4);
b64_from_24bit (buf[12], buf[22], buf[2], 4);
b64_from_24bit (buf[3], buf[13], buf[23], 4);
b64_from_24bit (buf[24], buf[4], buf[14], 4);
b64_from_24bit (buf[15], buf[25], buf[5], 4);
b64_from_24bit (buf[6], buf[16], buf[26], 4);
b64_from_24bit (buf[27], buf[7], buf[17], 4);
b64_from_24bit (buf[18], buf[28], buf[8], 4);
b64_from_24bit (buf[9], buf[19], buf[29], 4);
b64_from_24bit (0, buf[31], buf[30], 3);
break;
case '6':
b64_from_24bit (buf[0], buf[21], buf[42], 4);
b64_from_24bit (buf[22], buf[43], buf[1], 4);
b64_from_24bit (buf[44], buf[2], buf[23], 4);
b64_from_24bit (buf[3], buf[24], buf[45], 4);
b64_from_24bit (buf[25], buf[46], buf[4], 4);
b64_from_24bit (buf[47], buf[5], buf[26], 4);
b64_from_24bit (buf[6], buf[27], buf[48], 4);
b64_from_24bit (buf[28], buf[49], buf[7], 4);
b64_from_24bit (buf[50], buf[8], buf[29], 4);
b64_from_24bit (buf[9], buf[30], buf[51], 4);
b64_from_24bit (buf[31], buf[52], buf[10], 4);
b64_from_24bit (buf[53], buf[11], buf[32], 4);
b64_from_24bit (buf[12], buf[33], buf[54], 4);
b64_from_24bit (buf[34], buf[55], buf[13], 4);
b64_from_24bit (buf[56], buf[14], buf[35], 4);
b64_from_24bit (buf[15], buf[36], buf[57], 4);
b64_from_24bit (buf[37], buf[58], buf[16], 4);
b64_from_24bit (buf[59], buf[17], buf[38], 4);
b64_from_24bit (buf[18], buf[39], buf[60], 4);
b64_from_24bit (buf[40], buf[61], buf[19], 4);
b64_from_24bit (buf[62], buf[20], buf[41], 4);
b64_from_24bit (0, 0, buf[63], 2);
break;
default:
goto err;
}
*cp = '\0';
return out_buf;
err:
EVP_MD_CTX_free(md2);
EVP_MD_CTX_free(md);
OPENSSL_free(p_bytes);
OPENSSL_free(s_bytes);
return NULL;
}
# endif
static int do_passwd(int passed_salt, char **salt_p, char **salt_malloc_p,
char *passwd, BIO *out, int quiet, int table,
int reverse, size_t pw_maxlen, passwd_modes mode)
{
char *hash = NULL;
assert(salt_p != NULL);
assert(salt_malloc_p != NULL);
/* first make sure we have a salt */
if (!passed_salt) {
# ifndef OPENSSL_NO_DES
if (mode == passwd_crypt) {
if (*salt_malloc_p == NULL)
*salt_p = *salt_malloc_p = app_malloc(3, "salt buffer");
if (RAND_bytes((unsigned char *)*salt_p, 2) <= 0)
goto end;
(*salt_p)[0] = cov_2char[(*salt_p)[0] & 0x3f]; /* 6 bits */
(*salt_p)[1] = cov_2char[(*salt_p)[1] & 0x3f]; /* 6 bits */
(*salt_p)[2] = 0;
# ifdef CHARSET_EBCDIC
ascii2ebcdic(*salt_p, *salt_p, 2); /* des_crypt will convert back
* to ASCII */
# endif
}
# endif /* !OPENSSL_NO_DES */
# ifndef NO_MD5CRYPT_1
if (mode == passwd_md5 || mode == passwd_apr1 || mode == passwd_aixmd5) {
int i;
if (*salt_malloc_p == NULL)
*salt_p = *salt_malloc_p = app_malloc(9, "salt buffer");
if (RAND_bytes((unsigned char *)*salt_p, 8) <= 0)
goto end;
for (i = 0; i < 8; i++)
(*salt_p)[i] = cov_2char[(*salt_p)[i] & 0x3f]; /* 6 bits */
(*salt_p)[8] = 0;
}
# endif /* !NO_MD5CRYPT_1 */
# ifndef NO_SHACRYPT
if (mode == passwd_sha256 || mode == passwd_sha512) {
int i;
if (*salt_malloc_p == NULL)
*salt_p = *salt_malloc_p = app_malloc(17, "salt buffer");
if (RAND_bytes((unsigned char *)*salt_p, 16) <= 0)
goto end;
for (i = 0; i < 16; i++)
(*salt_p)[i] = cov_2char[(*salt_p)[i] & 0x3f]; /* 6 bits */
(*salt_p)[16] = 0;
}
# endif /* !NO_SHACRYPT */
}
assert(*salt_p != NULL);
/* truncate password if necessary */
if ((strlen(passwd) > pw_maxlen)) {
if (!quiet)
/*
* XXX: really we should know how to print a size_t, not cast it
*/
BIO_printf(bio_err,
"Warning: truncating password to %u characters\n",
(unsigned)pw_maxlen);
passwd[pw_maxlen] = 0;
}
assert(strlen(passwd) <= pw_maxlen);
/* now compute password hash */
# ifndef OPENSSL_NO_DES
if (mode == passwd_crypt)
hash = DES_crypt(passwd, *salt_p);
# endif
# ifndef NO_MD5CRYPT_1
if (mode == passwd_md5 || mode == passwd_apr1)
hash = md5crypt(passwd, (mode == passwd_md5 ? "1" : "apr1"), *salt_p);
if (mode == passwd_aixmd5)
hash = md5crypt(passwd, "", *salt_p);
# endif
# ifndef NO_SHACRYPT
if (mode == passwd_sha256 || mode == passwd_sha512)
hash = shacrypt(passwd, (mode == passwd_sha256 ? "5" : "6"), *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 1;
end:
return 0;
}
#else
int passwd_main(int argc, char **argv)
{
BIO_printf(bio_err, "Program not available.\n");
return (1);
}
#endif
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