diff options
Diffstat (limited to 'openssl-1.1.0h/apps/passwd.c')
| -rw-r--r-- | openssl-1.1.0h/apps/passwd.c | 512 |
1 files changed, 512 insertions, 0 deletions
diff --git a/openssl-1.1.0h/apps/passwd.c b/openssl-1.1.0h/apps/passwd.c new file mode 100644 index 0000000..f2b0d9a --- /dev/null +++ b/openssl-1.1.0h/apps/passwd.c @@ -0,0 +1,512 @@ +/* + * Copyright 2000-2016 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_DES) || !defined(NO_MD5CRYPT_1) + +# 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 + +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 +}; + +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, int usecrypt, int use1, + int useapr1); + +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_CRYPT, OPT_SALT, OPT_STDIN +} OPTION_CHOICE; + +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_MD5CRYPT_1 + {"apr1", OPT_APR1, '-', "MD5-based password algorithm, Apache variant"}, + {"1", OPT_1, '-', "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 + int in_noverify = 0; +# endif + int passed_salt = 0, quiet = 0, table = 0, reverse = 0; + int ret = 1, usecrypt = 0, use1 = 0, useapr1 = 0; + size_t passwd_malloc_size = 0, pw_maxlen = 256; + + 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 + 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: + use1 = 1; + break; + case OPT_APR1: + useapr1 = 1; + break; + case OPT_CRYPT: + usecrypt = 1; + 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) { + if (pw_source_defined) + goto opthelp; + pw_source_defined = 1; + passwds = argv; + } + + if (!usecrypt && !use1 && !useapr1) { + /* use default */ + usecrypt = 1; + } + if (usecrypt + use1 + useapr1 > 1) { + /* conflict */ + goto opthelp; + } + +# ifdef OPENSSL_NO_DES + if (usecrypt) + goto opthelp; +# endif +# ifdef NO_MD5CRYPT_1 + if (use1 || useapr1) + 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 (usecrypt) + pw_maxlen = 8; + else if (use1 || useapr1) + pw_maxlen = 256; /* arbitrary limit, should be enough for most + * passwords */ + + 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 + /* 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, usecrypt, use1, + useapr1)) + 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, usecrypt, use1, useapr1)) + 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..$.......md5hash..........\0" */ + static char out_buf[6 + 9 + 24 + 2]; + unsigned char buf[MD5_DIGEST_LENGTH]; + char *salt_out; + int n; + unsigned int i; + EVP_MD_CTX *md = NULL, *md2 = NULL; + size_t passwd_len, salt_len, magic_len; + + passwd_len = strlen(passwd); + out_buf[0] = '$'; + out_buf[1] = 0; + magic_len = strlen(magic); + + 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$..salt.." */ + return NULL; + + salt_out = out_buf + 2 + magic_len; + salt_len = strlen(salt_out); + + if (salt_len > 8) + return NULL; + + md = EVP_MD_CTX_new(); + if (md == NULL + || !EVP_DigestInit_ex(md, EVP_md5(), NULL) + || !EVP_DigestUpdate(md, passwd, passwd_len) + || !EVP_DigestUpdate(md, "$", 1) + || !EVP_DigestUpdate(md, magic, magic_len) + || !EVP_DigestUpdate(md, "$", 1) + || !EVP_DigestUpdate(md, salt_out, salt_len)) + goto err; + + md2 = EVP_MD_CTX_new(); + if (md2 == NULL + || !EVP_DigestInit_ex(md2, EVP_md5(), NULL) + || !EVP_DigestUpdate(md2, passwd, passwd_len) + || !EVP_DigestUpdate(md2, salt_out, salt_len) + || !EVP_DigestUpdate(md2, passwd, passwd_len) + || !EVP_DigestFinal_ex(md2, buf, NULL)) + goto err; + + for (i = passwd_len; i > sizeof(buf); i -= sizeof(buf)) { + if (!EVP_DigestUpdate(md, buf, sizeof(buf))) + goto err; + } + if (!EVP_DigestUpdate(md, buf, i)) + goto err; + + n = passwd_len; + while (n) { + if (!EVP_DigestUpdate(md, (n & 1) ? "\0" : passwd, 1)) + goto err; + n >>= 1; + } + if (!EVP_DigestFinal_ex(md, buf, NULL)) + return NULL; + + for (i = 0; i < 1000; i++) { + if (!EVP_DigestInit_ex(md2, EVP_md5(), NULL)) + goto err; + if (!EVP_DigestUpdate(md2, + (i & 1) ? (unsigned const char *)passwd : buf, + (i & 1) ? passwd_len : sizeof(buf))) + goto err; + if (i % 3) { + if (!EVP_DigestUpdate(md2, salt_out, salt_len)) + goto err; + } + if (i % 7) { + if (!EVP_DigestUpdate(md2, passwd, passwd_len)) + goto err; + } + if (!EVP_DigestUpdate(md2, + (i & 1) ? buf : (unsigned const char *)passwd, + (i & 1) ? sizeof(buf) : passwd_len)) + goto err; + if (!EVP_DigestFinal_ex(md2, buf, NULL)) + goto err; + } + EVP_MD_CTX_free(md2); + EVP_MD_CTX_free(md); + md2 = NULL; + md = NULL; + + { + /* transform buf into output string */ + unsigned char buf_perm[sizeof(buf)]; + int dest, source; + char *output; + + /* silly output permutation */ + for (dest = 0, source = 0; dest < 14; + dest++, source = (source + 6) % 17) + buf_perm[dest] = buf[source]; + buf_perm[14] = buf[5]; + buf_perm[15] = buf[11]; +# ifndef PEDANTIC /* Unfortunately, this generates a "no + * effect" warning */ + assert(16 == sizeof(buf_perm)); +# endif + + output = salt_out + salt_len; + assert(output == out_buf + strlen(out_buf)); + + *output++ = '$'; + + 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 + +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, int usecrypt, int use1, + int useapr1) +{ + 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 (usecrypt) { + 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 (use1 || useapr1) { + 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 */ + } + + 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 (usecrypt) + hash = DES_crypt(passwd, *salt_p); +# endif +# ifndef NO_MD5CRYPT_1 + if (use1 || useapr1) + 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 1; + + end: + return 0; +} +#else + +int passwd_main(int argc, char **argv) +{ + BIO_printf(bio_err, "Program not available.\n"); + return (1); +} +#endif |