sl@0: /* apps/passwd.c */
sl@0: 
sl@0: #if defined OPENSSL_NO_MD5 || defined CHARSET_EBCDIC
sl@0: # define NO_MD5CRYPT_1
sl@0: #endif
sl@0: 
sl@0: #if !defined(OPENSSL_NO_DES) || !defined(NO_MD5CRYPT_1)
sl@0: 
sl@0: #include <assert.h>
sl@0: #include <string.h>
sl@0: 
sl@0: #include "apps.h"
sl@0: 
sl@0: #include <openssl/bio.h>
sl@0: #include <openssl/err.h>
sl@0: #include <openssl/evp.h>
sl@0: #include <openssl/rand.h>
sl@0: #ifndef OPENSSL_NO_DES
sl@0: # include <openssl/des.h>
sl@0: #endif
sl@0: #ifndef NO_MD5CRYPT_1
sl@0: # include <openssl/md5.h>
sl@0: #endif
sl@0: 
sl@0: 
sl@0: #undef PROG
sl@0: #define PROG passwd_main
sl@0: 
sl@0: 
sl@0: static unsigned const char cov_2char[64]={
sl@0: 	/* from crypto/des/fcrypt.c */
sl@0: 	0x2E,0x2F,0x30,0x31,0x32,0x33,0x34,0x35,
sl@0: 	0x36,0x37,0x38,0x39,0x41,0x42,0x43,0x44,
sl@0: 	0x45,0x46,0x47,0x48,0x49,0x4A,0x4B,0x4C,
sl@0: 	0x4D,0x4E,0x4F,0x50,0x51,0x52,0x53,0x54,
sl@0: 	0x55,0x56,0x57,0x58,0x59,0x5A,0x61,0x62,
sl@0: 	0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6A,
sl@0: 	0x6B,0x6C,0x6D,0x6E,0x6F,0x70,0x71,0x72,
sl@0: 	0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7A
sl@0: };
sl@0: 
sl@0: static int do_passwd(int passed_salt, char **salt_p, char **salt_malloc_p,
sl@0: 	char *passwd, BIO *out, int quiet, int table, int reverse,
sl@0: 	size_t pw_maxlen, int usecrypt, int use1, int useapr1);
sl@0: 
sl@0: /* -crypt        - standard Unix password algorithm (default)
sl@0:  * -1            - MD5-based password algorithm
sl@0:  * -apr1         - MD5-based password algorithm, Apache variant
sl@0:  * -salt string  - salt
sl@0:  * -in file      - read passwords from file
sl@0:  * -stdin        - read passwords from stdin
sl@0:  * -noverify     - never verify when reading password from terminal
sl@0:  * -quiet        - no warnings
sl@0:  * -table        - format output as table
sl@0:  * -reverse      - switch table columns
sl@0:  */
sl@0: 
sl@0: 
sl@0: int MAIN(int, char **);
sl@0: 
sl@0: int MAIN(int argc, char **argv)
sl@0: 	{
sl@0: 	int ret = 1;
sl@0: 	char *infile = NULL;
sl@0: 	int in_stdin = 0;
sl@0: 	int in_noverify = 0;
sl@0: 	char *salt = NULL, *passwd = NULL, **passwds = NULL;
sl@0: 	char *salt_malloc = NULL, *passwd_malloc = NULL;
sl@0: 	size_t passwd_malloc_size = 0;
sl@0: 	int pw_source_defined = 0;
sl@0: 	BIO *in = NULL, *out = NULL;
sl@0: 	int i, badopt, opt_done;
sl@0: 	int passed_salt = 0, quiet = 0, table = 0, reverse = 0;
sl@0: 	int usecrypt = 0, use1 = 0, useapr1 = 0;
sl@0: 	size_t pw_maxlen = 0;
sl@0: 
sl@0: 	apps_startup();
sl@0: 
sl@0: 	if (bio_err == NULL)
sl@0: 		if ((bio_err=BIO_new(BIO_s_file())) != NULL)
sl@0: 			BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
sl@0: 
sl@0: 
sl@0: 	if (!load_config(bio_err, NULL))
sl@0: 		goto err;
sl@0: 	out = BIO_new(BIO_s_file());
sl@0: 	if (out == NULL)
sl@0: 		goto err;
sl@0: 	BIO_set_fp(out, stdout, BIO_NOCLOSE | BIO_FP_TEXT);
sl@0: #ifdef OPENSSL_SYS_VMS
sl@0: 	{
sl@0: 	BIO *tmpbio = BIO_new(BIO_f_linebuffer());
sl@0: 	out = BIO_push(tmpbio, out);
sl@0: 	}
sl@0: #endif
sl@0: 
sl@0: 	badopt = 0, opt_done = 0;
sl@0: 	i = 0;
sl@0: 	while (!badopt && !opt_done && argv[++i] != NULL)
sl@0: 		{
sl@0: 		if (strcmp(argv[i], "-crypt") == 0)
sl@0: 			usecrypt = 1;
sl@0: 		else if (strcmp(argv[i], "-1") == 0)
sl@0: 			use1 = 1;
sl@0: 		else if (strcmp(argv[i], "-apr1") == 0)
sl@0: 			useapr1 = 1;
sl@0: 		else if (strcmp(argv[i], "-salt") == 0)
sl@0: 			{
sl@0: 			if ((argv[i+1] != NULL) && (salt == NULL))
sl@0: 				{
sl@0: 				passed_salt = 1;
sl@0: 				salt = argv[++i];
sl@0: 				}
sl@0: 			else
sl@0: 				badopt = 1;
sl@0: 			}
sl@0: 		else if (strcmp(argv[i], "-in") == 0)
sl@0: 			{
sl@0: 			if ((argv[i+1] != NULL) && !pw_source_defined)
sl@0: 				{
sl@0: 				pw_source_defined = 1;
sl@0: 				infile = argv[++i];
sl@0: 				}
sl@0: 			else
sl@0: 				badopt = 1;
sl@0: 			}
sl@0: 		else if (strcmp(argv[i], "-stdin") == 0)
sl@0: 			{
sl@0: 			if (!pw_source_defined)
sl@0: 				{
sl@0: 				pw_source_defined = 1;
sl@0: 				in_stdin = 1;
sl@0: 				}
sl@0: 			else
sl@0: 				badopt = 1;
sl@0: 			}
sl@0: 		else if (strcmp(argv[i], "-noverify") == 0)
sl@0: 			in_noverify = 1;
sl@0: 		else if (strcmp(argv[i], "-quiet") == 0)
sl@0: 			quiet = 1;
sl@0: 		else if (strcmp(argv[i], "-table") == 0)
sl@0: 			table = 1;
sl@0: 		else if (strcmp(argv[i], "-reverse") == 0)
sl@0: 			reverse = 1;
sl@0: 		else if (argv[i][0] == '-')
sl@0: 			badopt = 1;
sl@0: 		else if (!pw_source_defined)
sl@0: 			/* non-option arguments, use as passwords */
sl@0: 			{
sl@0: 			pw_source_defined = 1;
sl@0: 			passwds = &argv[i];
sl@0: 			opt_done = 1;
sl@0: 			}
sl@0: 		else
sl@0: 			badopt = 1;
sl@0: 		}
sl@0: 
sl@0: 	if (!usecrypt && !use1 && !useapr1) /* use default */
sl@0: 		usecrypt = 1;
sl@0: 	if (usecrypt + use1 + useapr1 > 1) /* conflict */
sl@0: 		badopt = 1;
sl@0: 
sl@0: 	/* reject unsupported algorithms */
sl@0: #ifdef OPENSSL_NO_DES
sl@0: 	if (usecrypt) badopt = 1;
sl@0: #endif
sl@0: #ifdef NO_MD5CRYPT_1
sl@0: 	if (use1 || useapr1) badopt = 1;
sl@0: #endif
sl@0: 
sl@0: 	if (badopt) 
sl@0: 		{
sl@0: 		BIO_printf(bio_err, "Usage: passwd [options] [passwords]\n");
sl@0: 		BIO_printf(bio_err, "where options are\n");
sl@0: #ifndef OPENSSL_NO_DES
sl@0: 		BIO_printf(bio_err, "-crypt             standard Unix password algorithm (default)\n");
sl@0: #endif
sl@0: #ifndef NO_MD5CRYPT_1
sl@0: 		BIO_printf(bio_err, "-1                 MD5-based password algorithm\n");
sl@0: 		BIO_printf(bio_err, "-apr1              MD5-based password algorithm, Apache variant\n");
sl@0: #endif
sl@0: 		BIO_printf(bio_err, "-salt string       use provided salt\n");
sl@0: 		BIO_printf(bio_err, "-in file           read passwords from file\n");
sl@0: 		BIO_printf(bio_err, "-stdin             read passwords from stdin\n");
sl@0: 		BIO_printf(bio_err, "-noverify          never verify when reading password from terminal\n");
sl@0: 		BIO_printf(bio_err, "-quiet             no warnings\n");
sl@0: 		BIO_printf(bio_err, "-table             format output as table\n");
sl@0: 		BIO_printf(bio_err, "-reverse           switch table columns\n");
sl@0: 		
sl@0: 		goto err;
sl@0: 		}
sl@0: 
sl@0: 	if ((infile != NULL) || in_stdin)
sl@0: 		{
sl@0: 		in = BIO_new(BIO_s_file());
sl@0: 		if (in == NULL)
sl@0: 			goto err;
sl@0: 		if (infile != NULL)
sl@0: 			{
sl@0: 			assert(in_stdin == 0);
sl@0: 			if (BIO_read_filename(in, infile) <= 0)
sl@0: 				goto err;
sl@0: 			}
sl@0: 		else
sl@0: 			{
sl@0: 			assert(in_stdin);
sl@0: 			BIO_set_fp(in, stdin, BIO_NOCLOSE);
sl@0: 			
sl@0: 			}
sl@0: 		}
sl@0: 	
sl@0: 	if (usecrypt)
sl@0: 		pw_maxlen = 8;
sl@0: 	else if (use1 || useapr1)
sl@0: 		pw_maxlen = 256; /* arbitrary limit, should be enough for most passwords */
sl@0: 
sl@0: 	if (passwds == NULL)
sl@0: 		{
sl@0: 		/* no passwords on the command line */
sl@0: 
sl@0: 		passwd_malloc_size = pw_maxlen + 2;
sl@0: 		/* longer than necessary so that we can warn about truncation */
sl@0: 		passwd = passwd_malloc = OPENSSL_malloc(passwd_malloc_size);
sl@0: 		if (passwd_malloc == NULL)
sl@0: 			goto err;
sl@0: 		}
sl@0: 
sl@0: 	if ((in == NULL) && (passwds == NULL))
sl@0: 		{
sl@0: 		/* build a null-terminated list */
sl@0: 		static char *passwds_static[2] = {NULL, NULL};
sl@0: 		
sl@0: 		passwds = passwds_static;
sl@0: 		if (in == NULL)
sl@0: 			if (EVP_read_pw_string(passwd_malloc, passwd_malloc_size, "Password: ", !(passed_salt || in_noverify)) != 0)
sl@0: 				goto err;
sl@0: 		passwds[0] = passwd_malloc;
sl@0: 		}
sl@0: 
sl@0: 	if (in == NULL)
sl@0: 		{
sl@0: 		assert(passwds != NULL);
sl@0: 		assert(*passwds != NULL);
sl@0: 		
sl@0: 		do /* loop over list of passwords */
sl@0: 			{
sl@0: 			passwd = *passwds++;
sl@0: 			if (!do_passwd(passed_salt, &salt, &salt_malloc, passwd, out,
sl@0: 				quiet, table, reverse, pw_maxlen, usecrypt, use1, useapr1))
sl@0: 				goto err;
sl@0: 			}
sl@0: 		while (*passwds != NULL);
sl@0: 		}
sl@0: 	else
sl@0: 		/* in != NULL */
sl@0: 		{
sl@0: 		int done;
sl@0: 
sl@0: 		assert (passwd != NULL);
sl@0: 		do
sl@0: 			{
sl@0: 			int r = BIO_gets(in, passwd, pw_maxlen + 1);
sl@0: 			if (r > 0)
sl@0: 				{
sl@0: 				char *c = (strchr(passwd, '\n')) ;
sl@0: 				if (c != NULL)
sl@0: 					*c = 0; /* truncate at newline */
sl@0: 				else
sl@0: 					{
sl@0: 					/* ignore rest of line */
sl@0: 					char trash[BUFSIZ];
sl@0: 					do
sl@0: 						r = BIO_gets(in, trash, sizeof trash);
sl@0: 					while ((r > 0) && (!strchr(trash, '\n')));
sl@0: 					}
sl@0: 				
sl@0: 				if (!do_passwd(passed_salt, &salt, &salt_malloc, passwd, out,
sl@0: 					quiet, table, reverse, pw_maxlen, usecrypt, use1, useapr1))
sl@0: 					goto err;
sl@0: 				}
sl@0: 			done = (r <= 0);
sl@0: 			}
sl@0: 		while (!done);
sl@0: 		}
sl@0: 	ret = 0;
sl@0: 
sl@0: err:
sl@0: 	ERR_print_errors(bio_err);
sl@0: 	if (salt_malloc)
sl@0: 		OPENSSL_free(salt_malloc);
sl@0: 	if (passwd_malloc)
sl@0: 		OPENSSL_free(passwd_malloc);
sl@0: 	if (in)
sl@0: 		BIO_free(in);
sl@0: 	if (out)
sl@0: 		BIO_free_all(out);
sl@0: 	apps_shutdown();
sl@0: 	OPENSSL_EXIT(ret);
sl@0: 	}
sl@0: 
sl@0: 
sl@0: #ifndef NO_MD5CRYPT_1
sl@0: /* MD5-based password algorithm (should probably be available as a library
sl@0:  * function; then the static buffer would not be acceptable).
sl@0:  * For magic string "1", this should be compatible to the MD5-based BSD
sl@0:  * password algorithm.
sl@0:  * For 'magic' string "apr1", this is compatible to the MD5-based Apache
sl@0:  * password algorithm.
sl@0:  * (Apparently, the Apache password algorithm is identical except that the
sl@0:  * 'magic' string was changed -- the laziest application of the NIH principle
sl@0:  * I've ever encountered.)
sl@0:  */
sl@0: static char *md5crypt(const char *passwd, const char *magic, const char *salt)
sl@0: 	{
sl@0: 	static char out_buf[6 + 9 + 24 + 2]; /* "$apr1$..salt..$.......md5hash..........\0" */
sl@0: 	unsigned char buf[MD5_DIGEST_LENGTH];
sl@0: 	char *salt_out;
sl@0: 	int n;
sl@0: 	unsigned int i;
sl@0: 	EVP_MD_CTX md,md2;
sl@0: 	size_t passwd_len, salt_len;
sl@0: 
sl@0: 	passwd_len = strlen(passwd);
sl@0: 	out_buf[0] = '$';
sl@0: 	out_buf[1] = 0;
sl@0: 	assert(strlen(magic) <= 4); /* "1" or "apr1" */
sl@0: 	strncat(out_buf, magic, 4);
sl@0: 	strncat(out_buf, "$", 1);
sl@0: 	strncat(out_buf, salt, 8);
sl@0: 	assert(strlen(out_buf) <= 6 + 8); /* "$apr1$..salt.." */
sl@0: 	salt_out = out_buf + 2 + strlen(magic);
sl@0: 	salt_len = strlen(salt_out);
sl@0: 	assert(salt_len <= 8);
sl@0: 	
sl@0: 	EVP_MD_CTX_init(&md);
sl@0: 	EVP_DigestInit_ex(&md,EVP_md5(), NULL);
sl@0: 	EVP_DigestUpdate(&md, passwd, passwd_len);
sl@0: 	EVP_DigestUpdate(&md, "$", 1);
sl@0: 	EVP_DigestUpdate(&md, magic, strlen(magic));
sl@0: 	EVP_DigestUpdate(&md, "$", 1);
sl@0: 	EVP_DigestUpdate(&md, salt_out, salt_len);
sl@0: 	
sl@0: 	EVP_MD_CTX_init(&md2);
sl@0: 	EVP_DigestInit_ex(&md2,EVP_md5(), NULL);
sl@0: 	EVP_DigestUpdate(&md2, passwd, passwd_len);
sl@0: 	EVP_DigestUpdate(&md2, salt_out, salt_len);
sl@0: 	EVP_DigestUpdate(&md2, passwd, passwd_len);
sl@0: 	EVP_DigestFinal_ex(&md2, buf, NULL);
sl@0: 
sl@0: 	for (i = passwd_len; i > sizeof buf; i -= sizeof buf)
sl@0: 		EVP_DigestUpdate(&md, buf, sizeof buf);
sl@0: 	EVP_DigestUpdate(&md, buf, i);
sl@0: 	
sl@0: 	n = passwd_len;
sl@0: 	while (n)
sl@0: 		{
sl@0: 		EVP_DigestUpdate(&md, (n & 1) ? "\0" : passwd, 1);
sl@0: 		n >>= 1;
sl@0: 		}
sl@0: 	EVP_DigestFinal_ex(&md, buf, NULL);
sl@0: 
sl@0: 	for (i = 0; i < 1000; i++)
sl@0: 		{
sl@0: 		EVP_DigestInit_ex(&md2,EVP_md5(), NULL);
sl@0: 		EVP_DigestUpdate(&md2, (i & 1) ? (unsigned const char *) passwd : buf,
sl@0: 		                       (i & 1) ? passwd_len : sizeof buf);
sl@0: 		if (i % 3)
sl@0: 			EVP_DigestUpdate(&md2, salt_out, salt_len);
sl@0: 		if (i % 7)
sl@0: 			EVP_DigestUpdate(&md2, passwd, passwd_len);
sl@0: 		EVP_DigestUpdate(&md2, (i & 1) ? buf : (unsigned const char *) passwd,
sl@0: 		                       (i & 1) ? sizeof buf : passwd_len);
sl@0: 		EVP_DigestFinal_ex(&md2, buf, NULL);
sl@0: 		}
sl@0: 	EVP_MD_CTX_cleanup(&md2);
sl@0: 	
sl@0: 	 {
sl@0: 		/* transform buf into output string */
sl@0: 	
sl@0: 		unsigned char buf_perm[sizeof buf];
sl@0: 		int dest, source;
sl@0: 		char *output;
sl@0: 
sl@0: 		/* silly output permutation */
sl@0: 		for (dest = 0, source = 0; dest < 14; dest++, source = (source + 6) % 17)
sl@0: 			buf_perm[dest] = buf[source];
sl@0: 		buf_perm[14] = buf[5];
sl@0: 		buf_perm[15] = buf[11];
sl@0: #ifndef PEDANTIC /* Unfortunately, this generates a "no effect" warning */
sl@0: 		assert(16 == sizeof buf_perm);
sl@0: #endif
sl@0: 		
sl@0: 		output = salt_out + salt_len;
sl@0: 		assert(output == out_buf + strlen(out_buf));
sl@0: 		
sl@0: 		*output++ = '$';
sl@0: 
sl@0: 		for (i = 0; i < 15; i += 3)
sl@0: 			{
sl@0: 			*output++ = cov_2char[buf_perm[i+2] & 0x3f];
sl@0: 			*output++ = cov_2char[((buf_perm[i+1] & 0xf) << 2) |
sl@0: 				                  (buf_perm[i+2] >> 6)];
sl@0: 			*output++ = cov_2char[((buf_perm[i] & 3) << 4) |
sl@0: 				                  (buf_perm[i+1] >> 4)];
sl@0: 			*output++ = cov_2char[buf_perm[i] >> 2];
sl@0: 			}
sl@0: 		assert(i == 15);
sl@0: 		*output++ = cov_2char[buf_perm[i] & 0x3f];
sl@0: 		*output++ = cov_2char[buf_perm[i] >> 6];
sl@0: 		*output = 0;
sl@0: 		assert(strlen(out_buf) < sizeof(out_buf));
sl@0: 	 }
sl@0: 	EVP_MD_CTX_cleanup(&md);
sl@0: 
sl@0: 	return out_buf;
sl@0: 	}
sl@0: #endif
sl@0: 
sl@0: 
sl@0: static int do_passwd(int passed_salt, char **salt_p, char **salt_malloc_p,
sl@0: 	char *passwd, BIO *out,	int quiet, int table, int reverse,
sl@0: 	size_t pw_maxlen, int usecrypt, int use1, int useapr1)
sl@0: 	{
sl@0: 	char *hash = NULL;
sl@0: 
sl@0: 	assert(salt_p != NULL);
sl@0: 	assert(salt_malloc_p != NULL);
sl@0: 
sl@0: 	/* first make sure we have a salt */
sl@0: 	if (!passed_salt)
sl@0: 		{
sl@0: #ifndef OPENSSL_NO_DES
sl@0: 		if (usecrypt)
sl@0: 			{
sl@0: 			if (*salt_malloc_p == NULL)
sl@0: 				{
sl@0: 				*salt_p = *salt_malloc_p = OPENSSL_malloc(3);
sl@0: 				if (*salt_malloc_p == NULL)
sl@0: 					goto err;
sl@0: 				}
sl@0: 			if (RAND_pseudo_bytes((unsigned char *)*salt_p, 2) < 0)
sl@0: 				goto err;
sl@0: 			(*salt_p)[0] = cov_2char[(*salt_p)[0] & 0x3f]; /* 6 bits */
sl@0: 			(*salt_p)[1] = cov_2char[(*salt_p)[1] & 0x3f]; /* 6 bits */
sl@0: 			(*salt_p)[2] = 0;
sl@0: #ifdef CHARSET_EBCDIC
sl@0: 			ascii2ebcdic(*salt_p, *salt_p, 2); /* des_crypt will convert
sl@0: 			                                    * back to ASCII */
sl@0: #endif
sl@0: 			}
sl@0: #endif /* !OPENSSL_NO_DES */
sl@0: 
sl@0: #ifndef NO_MD5CRYPT_1
sl@0: 		if (use1 || useapr1)
sl@0: 			{
sl@0: 			int i;
sl@0: 			
sl@0: 			if (*salt_malloc_p == NULL)
sl@0: 				{
sl@0: 				*salt_p = *salt_malloc_p = OPENSSL_malloc(9);
sl@0: 				if (*salt_malloc_p == NULL)
sl@0: 					goto err;
sl@0: 				}
sl@0: 			if (RAND_pseudo_bytes((unsigned char *)*salt_p, 8) < 0)
sl@0: 				goto err;
sl@0: 			
sl@0: 			for (i = 0; i < 8; i++)
sl@0: 				(*salt_p)[i] = cov_2char[(*salt_p)[i] & 0x3f]; /* 6 bits */
sl@0: 			(*salt_p)[8] = 0;
sl@0: 			}
sl@0: #endif /* !NO_MD5CRYPT_1 */
sl@0: 		}
sl@0: 	
sl@0: 	assert(*salt_p != NULL);
sl@0: 	
sl@0: 	/* truncate password if necessary */
sl@0: 	if ((strlen(passwd) > pw_maxlen))
sl@0: 		{
sl@0: 		if (!quiet)
sl@0: 			/* XXX: really we should know how to print a size_t, not cast it */
sl@0: 			BIO_printf(bio_err, "Warning: truncating password to %u characters\n", (unsigned)pw_maxlen);
sl@0: 		passwd[pw_maxlen] = 0;
sl@0: 		}
sl@0: 	assert(strlen(passwd) <= pw_maxlen);
sl@0: 	
sl@0: 	/* now compute password hash */
sl@0: #ifndef OPENSSL_NO_DES
sl@0: 	if (usecrypt)
sl@0: 		hash = DES_crypt(passwd, *salt_p);
sl@0: #endif
sl@0: #ifndef NO_MD5CRYPT_1
sl@0: 	if (use1 || useapr1)
sl@0: 		hash = md5crypt(passwd, (use1 ? "1" : "apr1"), *salt_p);
sl@0: #endif
sl@0: 	assert(hash != NULL);
sl@0: 
sl@0: 	if (table && !reverse)
sl@0: 		BIO_printf(out, "%s\t%s\n", passwd, hash);
sl@0: 	else if (table && reverse)
sl@0: 		BIO_printf(out, "%s\t%s\n", hash, passwd);
sl@0: 	else
sl@0: 		BIO_printf(out, "%s\n", hash);
sl@0: 	return 1;
sl@0: 	
sl@0: err:
sl@0: 	return 0;
sl@0: 	}
sl@0: #else
sl@0: 
sl@0: int MAIN(int argc, char **argv)
sl@0: 	{
sl@0: 	fputs("Program not available.\n", stderr)
sl@0: 	OPENSSL_EXIT(1);
sl@0: 	}
sl@0: #endif