159191Skris/* apps/passwd.c */ 259191Skris 3109998Smarkm#if defined OPENSSL_NO_MD5 || defined CHARSET_EBCDIC 468651Skris# define NO_MD5CRYPT_1 559191Skris#endif 659191Skris 7109998Smarkm#if !defined(OPENSSL_NO_DES) || !defined(NO_MD5CRYPT_1) 859191Skris 959191Skris#include <assert.h> 1059191Skris#include <string.h> 1159191Skris 1259191Skris#include "apps.h" 1359191Skris 1459191Skris#include <openssl/bio.h> 1559191Skris#include <openssl/err.h> 1659191Skris#include <openssl/evp.h> 1759191Skris#include <openssl/rand.h> 18109998Smarkm#ifndef OPENSSL_NO_DES 1959191Skris# include <openssl/des.h> 2059191Skris#endif 2168651Skris#ifndef NO_MD5CRYPT_1 2259191Skris# include <openssl/md5.h> 2359191Skris#endif 2459191Skris 2559191Skris 2659191Skris#undef PROG 2759191Skris#define PROG passwd_main 2859191Skris 2959191Skris 3059191Skrisstatic unsigned const char cov_2char[64]={ 3159191Skris /* from crypto/des/fcrypt.c */ 3259191Skris 0x2E,0x2F,0x30,0x31,0x32,0x33,0x34,0x35, 3359191Skris 0x36,0x37,0x38,0x39,0x41,0x42,0x43,0x44, 3459191Skris 0x45,0x46,0x47,0x48,0x49,0x4A,0x4B,0x4C, 3559191Skris 0x4D,0x4E,0x4F,0x50,0x51,0x52,0x53,0x54, 3659191Skris 0x55,0x56,0x57,0x58,0x59,0x5A,0x61,0x62, 3759191Skris 0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6A, 3859191Skris 0x6B,0x6C,0x6D,0x6E,0x6F,0x70,0x71,0x72, 3959191Skris 0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7A 4059191Skris}; 4159191Skris 4259191Skrisstatic int do_passwd(int passed_salt, char **salt_p, char **salt_malloc_p, 4359191Skris char *passwd, BIO *out, int quiet, int table, int reverse, 4468651Skris size_t pw_maxlen, int usecrypt, int use1, int useapr1); 4559191Skris 4668651Skris/* -crypt - standard Unix password algorithm (default) 4768651Skris * -1 - MD5-based password algorithm 4868651Skris * -apr1 - MD5-based password algorithm, Apache variant 4959191Skris * -salt string - salt 5059191Skris * -in file - read passwords from file 5159191Skris * -stdin - read passwords from stdin 52109998Smarkm * -noverify - never verify when reading password from terminal 5359191Skris * -quiet - no warnings 5459191Skris * -table - format output as table 5559191Skris * -reverse - switch table columns 5659191Skris */ 5759191Skris 5859191Skrisint MAIN(int, char **); 5959191Skris 6059191Skrisint MAIN(int argc, char **argv) 6159191Skris { 6259191Skris int ret = 1; 6359191Skris char *infile = NULL; 6459191Skris int in_stdin = 0; 65109998Smarkm int in_noverify = 0; 6659191Skris char *salt = NULL, *passwd = NULL, **passwds = NULL; 6759191Skris char *salt_malloc = NULL, *passwd_malloc = NULL; 6868651Skris size_t passwd_malloc_size = 0; 6959191Skris int pw_source_defined = 0; 7059191Skris BIO *in = NULL, *out = NULL; 7159191Skris int i, badopt, opt_done; 7259191Skris int passed_salt = 0, quiet = 0, table = 0, reverse = 0; 7368651Skris int usecrypt = 0, use1 = 0, useapr1 = 0; 7459191Skris size_t pw_maxlen = 0; 7559191Skris 7659191Skris apps_startup(); 7759191Skris 7859191Skris if (bio_err == NULL) 7959191Skris if ((bio_err=BIO_new(BIO_s_file())) != NULL) 8059191Skris BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 81109998Smarkm 82109998Smarkm if (!load_config(bio_err, NULL)) 83109998Smarkm goto err; 8459191Skris out = BIO_new(BIO_s_file()); 8559191Skris if (out == NULL) 8659191Skris goto err; 8759191Skris BIO_set_fp(out, stdout, BIO_NOCLOSE | BIO_FP_TEXT); 88109998Smarkm#ifdef OPENSSL_SYS_VMS 8968651Skris { 9068651Skris BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 9168651Skris out = BIO_push(tmpbio, out); 9268651Skris } 9368651Skris#endif 9459191Skris 9559191Skris badopt = 0, opt_done = 0; 9659191Skris i = 0; 9759191Skris while (!badopt && !opt_done && argv[++i] != NULL) 9859191Skris { 9959191Skris if (strcmp(argv[i], "-crypt") == 0) 10059191Skris usecrypt = 1; 10168651Skris else if (strcmp(argv[i], "-1") == 0) 10268651Skris use1 = 1; 10359191Skris else if (strcmp(argv[i], "-apr1") == 0) 10459191Skris useapr1 = 1; 10559191Skris else if (strcmp(argv[i], "-salt") == 0) 10659191Skris { 10759191Skris if ((argv[i+1] != NULL) && (salt == NULL)) 10859191Skris { 10959191Skris passed_salt = 1; 11059191Skris salt = argv[++i]; 11159191Skris } 11259191Skris else 11359191Skris badopt = 1; 11459191Skris } 11559191Skris else if (strcmp(argv[i], "-in") == 0) 11659191Skris { 11759191Skris if ((argv[i+1] != NULL) && !pw_source_defined) 11859191Skris { 11959191Skris pw_source_defined = 1; 12059191Skris infile = argv[++i]; 12159191Skris } 12259191Skris else 12359191Skris badopt = 1; 12459191Skris } 12559191Skris else if (strcmp(argv[i], "-stdin") == 0) 12659191Skris { 12759191Skris if (!pw_source_defined) 12859191Skris { 12959191Skris pw_source_defined = 1; 13059191Skris in_stdin = 1; 13159191Skris } 13259191Skris else 13359191Skris badopt = 1; 13459191Skris } 135109998Smarkm else if (strcmp(argv[i], "-noverify") == 0) 136109998Smarkm in_noverify = 1; 13759191Skris else if (strcmp(argv[i], "-quiet") == 0) 13859191Skris quiet = 1; 13959191Skris else if (strcmp(argv[i], "-table") == 0) 14059191Skris table = 1; 14159191Skris else if (strcmp(argv[i], "-reverse") == 0) 14259191Skris reverse = 1; 14359191Skris else if (argv[i][0] == '-') 14459191Skris badopt = 1; 14559191Skris else if (!pw_source_defined) 14659191Skris /* non-option arguments, use as passwords */ 14759191Skris { 14859191Skris pw_source_defined = 1; 14959191Skris passwds = &argv[i]; 15059191Skris opt_done = 1; 15159191Skris } 15259191Skris else 15359191Skris badopt = 1; 15459191Skris } 15559191Skris 15668651Skris if (!usecrypt && !use1 && !useapr1) /* use default */ 15759191Skris usecrypt = 1; 15868651Skris if (usecrypt + use1 + useapr1 > 1) /* conflict */ 15959191Skris badopt = 1; 16059191Skris 16159191Skris /* reject unsupported algorithms */ 162109998Smarkm#ifdef OPENSSL_NO_DES 16359191Skris if (usecrypt) badopt = 1; 16459191Skris#endif 16568651Skris#ifdef NO_MD5CRYPT_1 16668651Skris if (use1 || useapr1) badopt = 1; 16759191Skris#endif 16859191Skris 16959191Skris if (badopt) 17059191Skris { 17159191Skris BIO_printf(bio_err, "Usage: passwd [options] [passwords]\n"); 17259191Skris BIO_printf(bio_err, "where options are\n"); 173109998Smarkm#ifndef OPENSSL_NO_DES 17459191Skris BIO_printf(bio_err, "-crypt standard Unix password algorithm (default)\n"); 17559191Skris#endif 17668651Skris#ifndef NO_MD5CRYPT_1 17768651Skris BIO_printf(bio_err, "-1 MD5-based password algorithm\n"); 17868651Skris BIO_printf(bio_err, "-apr1 MD5-based password algorithm, Apache variant\n"); 17959191Skris#endif 18059191Skris BIO_printf(bio_err, "-salt string use provided salt\n"); 18159191Skris BIO_printf(bio_err, "-in file read passwords from file\n"); 18259191Skris BIO_printf(bio_err, "-stdin read passwords from stdin\n"); 183109998Smarkm BIO_printf(bio_err, "-noverify never verify when reading password from terminal\n"); 18459191Skris BIO_printf(bio_err, "-quiet no warnings\n"); 18559191Skris BIO_printf(bio_err, "-table format output as table\n"); 18659191Skris BIO_printf(bio_err, "-reverse switch table columns\n"); 18759191Skris 18859191Skris goto err; 18959191Skris } 19059191Skris 19159191Skris if ((infile != NULL) || in_stdin) 19259191Skris { 19359191Skris in = BIO_new(BIO_s_file()); 19459191Skris if (in == NULL) 19559191Skris goto err; 19659191Skris if (infile != NULL) 19759191Skris { 19859191Skris assert(in_stdin == 0); 19959191Skris if (BIO_read_filename(in, infile) <= 0) 20059191Skris goto err; 20159191Skris } 20259191Skris else 20359191Skris { 20459191Skris assert(in_stdin); 20559191Skris BIO_set_fp(in, stdin, BIO_NOCLOSE); 20659191Skris } 20759191Skris } 20859191Skris 20959191Skris if (usecrypt) 21059191Skris pw_maxlen = 8; 21168651Skris else if (use1 || useapr1) 21259191Skris pw_maxlen = 256; /* arbitrary limit, should be enough for most passwords */ 21359191Skris 21459191Skris if (passwds == NULL) 21559191Skris { 21659191Skris /* no passwords on the command line */ 21768651Skris 21868651Skris passwd_malloc_size = pw_maxlen + 2; 21968651Skris /* longer than necessary so that we can warn about truncation */ 22068651Skris passwd = passwd_malloc = OPENSSL_malloc(passwd_malloc_size); 22159191Skris if (passwd_malloc == NULL) 22259191Skris goto err; 22359191Skris } 22459191Skris 22559191Skris if ((in == NULL) && (passwds == NULL)) 22659191Skris { 22759191Skris /* build a null-terminated list */ 22859191Skris static char *passwds_static[2] = {NULL, NULL}; 22959191Skris 23059191Skris passwds = passwds_static; 23159191Skris if (in == NULL) 232109998Smarkm if (EVP_read_pw_string(passwd_malloc, passwd_malloc_size, "Password: ", !(passed_salt || in_noverify)) != 0) 23359191Skris goto err; 23459191Skris passwds[0] = passwd_malloc; 23559191Skris } 23659191Skris 23759191Skris if (in == NULL) 23859191Skris { 23959191Skris assert(passwds != NULL); 24059191Skris assert(*passwds != NULL); 24159191Skris 24259191Skris do /* loop over list of passwords */ 24359191Skris { 24459191Skris passwd = *passwds++; 24559191Skris if (!do_passwd(passed_salt, &salt, &salt_malloc, passwd, out, 24668651Skris quiet, table, reverse, pw_maxlen, usecrypt, use1, useapr1)) 24759191Skris goto err; 24859191Skris } 24959191Skris while (*passwds != NULL); 25059191Skris } 25159191Skris else 25259191Skris /* in != NULL */ 25359191Skris { 25459191Skris int done; 25559191Skris 25659191Skris assert (passwd != NULL); 25759191Skris do 25859191Skris { 25959191Skris int r = BIO_gets(in, passwd, pw_maxlen + 1); 26059191Skris if (r > 0) 26159191Skris { 26259191Skris char *c = (strchr(passwd, '\n')) ; 26359191Skris if (c != NULL) 26459191Skris *c = 0; /* truncate at newline */ 26559191Skris else 26659191Skris { 26759191Skris /* ignore rest of line */ 26859191Skris char trash[BUFSIZ]; 26959191Skris do 27059191Skris r = BIO_gets(in, trash, sizeof trash); 27159191Skris while ((r > 0) && (!strchr(trash, '\n'))); 27259191Skris } 27359191Skris 27459191Skris if (!do_passwd(passed_salt, &salt, &salt_malloc, passwd, out, 27568651Skris quiet, table, reverse, pw_maxlen, usecrypt, use1, useapr1)) 27659191Skris goto err; 27759191Skris } 27859191Skris done = (r <= 0); 27959191Skris } 28059191Skris while (!done); 28159191Skris } 28276866Skris ret = 0; 28359191Skris 28459191Skriserr: 28559191Skris ERR_print_errors(bio_err); 28659191Skris if (salt_malloc) 28768651Skris OPENSSL_free(salt_malloc); 28859191Skris if (passwd_malloc) 28968651Skris OPENSSL_free(passwd_malloc); 29059191Skris if (in) 29159191Skris BIO_free(in); 29259191Skris if (out) 29368651Skris BIO_free_all(out); 294109998Smarkm apps_shutdown(); 295109998Smarkm OPENSSL_EXIT(ret); 29659191Skris } 29759191Skris 29859191Skris 29968651Skris#ifndef NO_MD5CRYPT_1 30068651Skris/* MD5-based password algorithm (should probably be available as a library 30168651Skris * function; then the static buffer would not be acceptable). 30268651Skris * For magic string "1", this should be compatible to the MD5-based BSD 30368651Skris * password algorithm. 30468651Skris * For 'magic' string "apr1", this is compatible to the MD5-based Apache 30568651Skris * password algorithm. 30668651Skris * (Apparently, the Apache password algorithm is identical except that the 30768651Skris * 'magic' string was changed -- the laziest application of the NIH principle 30868651Skris * I've ever encountered.) 30968651Skris */ 31068651Skrisstatic char *md5crypt(const char *passwd, const char *magic, const char *salt) 31159191Skris { 31259191Skris static char out_buf[6 + 9 + 24 + 2]; /* "$apr1$..salt..$.......md5hash..........\0" */ 31359191Skris unsigned char buf[MD5_DIGEST_LENGTH]; 31459191Skris char *salt_out; 315160814Ssimon int n; 316160814Ssimon unsigned int i; 317109998Smarkm EVP_MD_CTX md,md2; 31859191Skris size_t passwd_len, salt_len; 31959191Skris 32059191Skris passwd_len = strlen(passwd); 32168651Skris out_buf[0] = '$'; 32268651Skris out_buf[1] = 0; 32368651Skris assert(strlen(magic) <= 4); /* "1" or "apr1" */ 32468651Skris strncat(out_buf, magic, 4); 32568651Skris strncat(out_buf, "$", 1); 32659191Skris strncat(out_buf, salt, 8); 32759191Skris assert(strlen(out_buf) <= 6 + 8); /* "$apr1$..salt.." */ 32872613Skris salt_out = out_buf + 2 + strlen(magic); 32959191Skris salt_len = strlen(salt_out); 33059191Skris assert(salt_len <= 8); 33159191Skris 332109998Smarkm EVP_MD_CTX_init(&md); 333109998Smarkm EVP_DigestInit_ex(&md,EVP_md5(), NULL); 334109998Smarkm EVP_DigestUpdate(&md, passwd, passwd_len); 335109998Smarkm EVP_DigestUpdate(&md, "$", 1); 336109998Smarkm EVP_DigestUpdate(&md, magic, strlen(magic)); 337109998Smarkm EVP_DigestUpdate(&md, "$", 1); 338109998Smarkm EVP_DigestUpdate(&md, salt_out, salt_len); 33959191Skris 340109998Smarkm EVP_MD_CTX_init(&md2); 341109998Smarkm EVP_DigestInit_ex(&md2,EVP_md5(), NULL); 342109998Smarkm EVP_DigestUpdate(&md2, passwd, passwd_len); 343109998Smarkm EVP_DigestUpdate(&md2, salt_out, salt_len); 344109998Smarkm EVP_DigestUpdate(&md2, passwd, passwd_len); 345109998Smarkm EVP_DigestFinal_ex(&md2, buf, NULL); 34659191Skris 34759191Skris for (i = passwd_len; i > sizeof buf; i -= sizeof buf) 348109998Smarkm EVP_DigestUpdate(&md, buf, sizeof buf); 349109998Smarkm EVP_DigestUpdate(&md, buf, i); 35059191Skris 35159191Skris n = passwd_len; 35259191Skris while (n) 35359191Skris { 354109998Smarkm EVP_DigestUpdate(&md, (n & 1) ? "\0" : passwd, 1); 35559191Skris n >>= 1; 35659191Skris } 357109998Smarkm EVP_DigestFinal_ex(&md, buf, NULL); 35859191Skris 35959191Skris for (i = 0; i < 1000; i++) 36059191Skris { 361109998Smarkm EVP_DigestInit_ex(&md2,EVP_md5(), NULL); 362160814Ssimon EVP_DigestUpdate(&md2, (i & 1) ? (unsigned const char *) passwd : buf, 363109998Smarkm (i & 1) ? passwd_len : sizeof buf); 36459191Skris if (i % 3) 365109998Smarkm EVP_DigestUpdate(&md2, salt_out, salt_len); 36659191Skris if (i % 7) 367109998Smarkm EVP_DigestUpdate(&md2, passwd, passwd_len); 368160814Ssimon EVP_DigestUpdate(&md2, (i & 1) ? buf : (unsigned const char *) passwd, 369109998Smarkm (i & 1) ? sizeof buf : passwd_len); 370109998Smarkm EVP_DigestFinal_ex(&md2, buf, NULL); 37159191Skris } 372109998Smarkm EVP_MD_CTX_cleanup(&md2); 37359191Skris 37459191Skris { 37559191Skris /* transform buf into output string */ 37659191Skris 37759191Skris unsigned char buf_perm[sizeof buf]; 37859191Skris int dest, source; 37959191Skris char *output; 38059191Skris 38159191Skris /* silly output permutation */ 38259191Skris for (dest = 0, source = 0; dest < 14; dest++, source = (source + 6) % 17) 38359191Skris buf_perm[dest] = buf[source]; 38459191Skris buf_perm[14] = buf[5]; 38559191Skris buf_perm[15] = buf[11]; 38659191Skris#ifndef PEDANTIC /* Unfortunately, this generates a "no effect" warning */ 38759191Skris assert(16 == sizeof buf_perm); 38859191Skris#endif 38959191Skris 39059191Skris output = salt_out + salt_len; 39159191Skris assert(output == out_buf + strlen(out_buf)); 39259191Skris 39359191Skris *output++ = '$'; 39459191Skris 39559191Skris for (i = 0; i < 15; i += 3) 39659191Skris { 39759191Skris *output++ = cov_2char[buf_perm[i+2] & 0x3f]; 39859191Skris *output++ = cov_2char[((buf_perm[i+1] & 0xf) << 2) | 39959191Skris (buf_perm[i+2] >> 6)]; 40059191Skris *output++ = cov_2char[((buf_perm[i] & 3) << 4) | 40159191Skris (buf_perm[i+1] >> 4)]; 40259191Skris *output++ = cov_2char[buf_perm[i] >> 2]; 40359191Skris } 40459191Skris assert(i == 15); 40559191Skris *output++ = cov_2char[buf_perm[i] & 0x3f]; 40659191Skris *output++ = cov_2char[buf_perm[i] >> 6]; 40759191Skris *output = 0; 40859191Skris assert(strlen(out_buf) < sizeof(out_buf)); 40959191Skris } 410109998Smarkm EVP_MD_CTX_cleanup(&md); 41159191Skris 41259191Skris return out_buf; 41359191Skris } 41459191Skris#endif 41559191Skris 41659191Skris 41759191Skrisstatic int do_passwd(int passed_salt, char **salt_p, char **salt_malloc_p, 41859191Skris char *passwd, BIO *out, int quiet, int table, int reverse, 41968651Skris size_t pw_maxlen, int usecrypt, int use1, int useapr1) 42059191Skris { 42159191Skris char *hash = NULL; 42259191Skris 42359191Skris assert(salt_p != NULL); 42459191Skris assert(salt_malloc_p != NULL); 42559191Skris 42659191Skris /* first make sure we have a salt */ 42759191Skris if (!passed_salt) 42859191Skris { 429109998Smarkm#ifndef OPENSSL_NO_DES 43059191Skris if (usecrypt) 43159191Skris { 43259191Skris if (*salt_malloc_p == NULL) 43359191Skris { 43468651Skris *salt_p = *salt_malloc_p = OPENSSL_malloc(3); 43559191Skris if (*salt_malloc_p == NULL) 43659191Skris goto err; 43759191Skris } 43859191Skris if (RAND_pseudo_bytes((unsigned char *)*salt_p, 2) < 0) 43959191Skris goto err; 44059191Skris (*salt_p)[0] = cov_2char[(*salt_p)[0] & 0x3f]; /* 6 bits */ 44159191Skris (*salt_p)[1] = cov_2char[(*salt_p)[1] & 0x3f]; /* 6 bits */ 44259191Skris (*salt_p)[2] = 0; 44359191Skris#ifdef CHARSET_EBCDIC 44459191Skris ascii2ebcdic(*salt_p, *salt_p, 2); /* des_crypt will convert 44559191Skris * back to ASCII */ 44659191Skris#endif 44759191Skris } 448109998Smarkm#endif /* !OPENSSL_NO_DES */ 44959191Skris 45068651Skris#ifndef NO_MD5CRYPT_1 45168651Skris if (use1 || useapr1) 45259191Skris { 45359191Skris int i; 45459191Skris 45559191Skris if (*salt_malloc_p == NULL) 45659191Skris { 45768651Skris *salt_p = *salt_malloc_p = OPENSSL_malloc(9); 45859191Skris if (*salt_malloc_p == NULL) 45959191Skris goto err; 46059191Skris } 46159191Skris if (RAND_pseudo_bytes((unsigned char *)*salt_p, 8) < 0) 46259191Skris goto err; 46359191Skris 46459191Skris for (i = 0; i < 8; i++) 46559191Skris (*salt_p)[i] = cov_2char[(*salt_p)[i] & 0x3f]; /* 6 bits */ 46659191Skris (*salt_p)[8] = 0; 46759191Skris } 46868651Skris#endif /* !NO_MD5CRYPT_1 */ 46959191Skris } 47059191Skris 47159191Skris assert(*salt_p != NULL); 47259191Skris 47359191Skris /* truncate password if necessary */ 47459191Skris if ((strlen(passwd) > pw_maxlen)) 47559191Skris { 47659191Skris if (!quiet) 477160814Ssimon /* XXX: really we should know how to print a size_t, not cast it */ 478160814Ssimon BIO_printf(bio_err, "Warning: truncating password to %u characters\n", (unsigned)pw_maxlen); 47959191Skris passwd[pw_maxlen] = 0; 48059191Skris } 48159191Skris assert(strlen(passwd) <= pw_maxlen); 48259191Skris 48359191Skris /* now compute password hash */ 484109998Smarkm#ifndef OPENSSL_NO_DES 48559191Skris if (usecrypt) 486109998Smarkm hash = DES_crypt(passwd, *salt_p); 48759191Skris#endif 48868651Skris#ifndef NO_MD5CRYPT_1 48968651Skris if (use1 || useapr1) 49068651Skris hash = md5crypt(passwd, (use1 ? "1" : "apr1"), *salt_p); 49159191Skris#endif 49259191Skris assert(hash != NULL); 49359191Skris 49459191Skris if (table && !reverse) 49559191Skris BIO_printf(out, "%s\t%s\n", passwd, hash); 49659191Skris else if (table && reverse) 49759191Skris BIO_printf(out, "%s\t%s\n", hash, passwd); 49859191Skris else 49959191Skris BIO_printf(out, "%s\n", hash); 50059191Skris return 1; 50159191Skris 50259191Skriserr: 50359191Skris return 0; 50459191Skris } 50559191Skris#else 50659191Skris 50759191Skrisint MAIN(int argc, char **argv) 50859191Skris { 50959191Skris fputs("Program not available.\n", stderr) 510109998Smarkm OPENSSL_EXIT(1); 51159191Skris } 51259191Skris#endif 513