diff options
Diffstat (limited to 'loginutils')
| -rw-r--r-- | loginutils/Config.in | 16 | ||||
| -rw-r--r-- | loginutils/Kbuild | 1 | ||||
| -rw-r--r-- | loginutils/cryptpw.c | 144 | ||||
| -rw-r--r-- | loginutils/mkpasswd.c | 71 |
4 files changed, 95 insertions, 137 deletions
diff --git a/loginutils/Config.in b/loginutils/Config.in index 6efca7e..ddd0c80 100644 --- a/loginutils/Config.in +++ b/loginutils/Config.in @@ -242,22 +242,16 @@ config CRYPTPW bool "cryptpw" default n help - Applet for crypting a string. + Encrypts the given password with the crypt(3) libc function + using the given salt. Debian has this utility under mkpasswd + name. Busybox provides mkpasswd as an alias for cryptpw. config CHPASSWD bool "chpasswd" default n help - chpasswd reads a file of user name and password pairs from - standard input and uses this information to update a group of - existing users. - -config MKPASSWD - bool "mkpasswd" - default n - help - mkpasswd encrypts the given password with the crypt(3) libc function - using the given salt. + Reads a file of user name and password pairs from standard input + and uses this information to update a group of existing users. config SU bool "su" diff --git a/loginutils/Kbuild b/loginutils/Kbuild index 616d977..3d0d777 100644 --- a/loginutils/Kbuild +++ b/loginutils/Kbuild @@ -11,7 +11,6 @@ lib-$(CONFIG_CRYPTPW) += cryptpw.o lib-$(CONFIG_CHPASSWD) += chpasswd.o lib-$(CONFIG_GETTY) += getty.o lib-$(CONFIG_LOGIN) += login.o -lib-$(CONFIG_MKPASSWD) += mkpasswd.o lib-$(CONFIG_PASSWD) += passwd.o lib-$(CONFIG_SU) += su.o lib-$(CONFIG_SULOGIN) += sulogin.o diff --git a/loginutils/cryptpw.c b/loginutils/cryptpw.c index 0c1a9a0..c179e35 100644 --- a/loginutils/cryptpw.c +++ b/loginutils/cryptpw.c @@ -3,75 +3,111 @@ * cryptpw.c * * Cooked from passwd.c by Thomas Lundquist <thomasez@zelow.no> + * mkpasswd compatible options added by Bernhard Reutner-Fischer */ #include "libbb.h" -#define TESTING 0 +/* Debian has 'mkpasswd' utility, manpage says: -/* -set TESTING to 1 and pipe some file through this script -if you played with bbox's crypt implementation. +NAME + mkpasswd - Overfeatured front end to crypt(3) +SYNOPSIS + mkpasswd PASSWORD SALT +... +OPTIONS +-S, --salt=STRING + Use the STRING as salt. It must not contain prefixes such as + $1$. +-R, --rounds=NUMBER + Use NUMBER rounds. This argument is ignored if the method + choosen does not support variable rounds. For the OpenBSD Blowfish + method this is the logarithm of the number of rounds. +-m, --method=TYPE + Compute the password using the TYPE method. If TYPE is 'help' + then the available methods are printed. +-P, --password-fd=NUM + Read the password from file descriptor NUM instead of using getpass(3). + If the file descriptor is not connected to a tty then + no other message than the hashed password is printed on stdout. +-s, --stdin + Like --password-fd=0. +ENVIRONMENT + $MKPASSWD_OPTIONS + A list of options which will be evaluated before the ones + specified on the command line. +BUGS + This programs suffers of a bad case of featuritis. + ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -while read line; do - n=`./busybox cryptpw -a des -- "$line"` - o=`./busybox_org cryptpw -a des -- "$line"` - test "$n" != "$o" && { - echo n="$n" - echo o="$o" - exit - } - n=`./busybox cryptpw -- "$line"` - o=`./busybox_org cryptpw -- "$line"` - test "$n" != "$o" && { - echo n="$n" - echo o="$o" - exit - } -done - */ +Very true... + +cryptpw was in bbox before this gem, so we retain it, and alias mkpasswd +to cryptpw. -a option (alias for -m) came from cryptpw. +*/ int cryptpw_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; int cryptpw_main(int argc UNUSED_PARAM, char **argv) { - char salt[sizeof("$N$") + 16 + TESTING*100]; - char *opt_a; - int opts; - - opts = getopt32(argv, "a:", &opt_a); + /* $N$ + sha_salt_16_bytes + NUL */ + char salt[3 + 16 + 1]; + char *salt_ptr; + const char *opt_m, *opt_S; + int len; + int fd; - if (opts && opt_a[0] == 'd') { - crypt_make_salt(salt, 2/2, 0); /* des */ -#if TESTING - strcpy(salt, "a."); +#if ENABLE_GETOPT_LONG + static const char mkpasswd_longopts[] ALIGN1 = + "stdin\0" No_argument "s" + "password-fd\0" Required_argument "P" + "salt\0" Required_argument "S" + "method\0" Required_argument "m" + ; + applet_long_options = mkpasswd_longopts; #endif - } else { - salt[0] = '$'; - salt[1] = '1'; - salt[2] = '$'; + fd = STDIN_FILENO; + opt_m = "d"; + opt_S = NULL; + /* at most two non-option arguments; -P NUM */ + opt_complementary = "?2:P+"; + getopt32(argv, "sP:S:m:a:", &fd, &opt_S, &opt_m, &opt_m); + argv += optind; + + /* have no idea how to handle -s... */ + + if (argv[0] && !opt_S) + opt_S = argv[1]; + + len = 2/2; + salt_ptr = salt; + if (opt_m[0] != 'd') { /* not des */ + len = 8/2; /* so far assuming md5 */ + *salt_ptr++ = '$'; + *salt_ptr++ = '1'; + *salt_ptr++ = '$'; #if !ENABLE_USE_BB_CRYPT || ENABLE_USE_BB_CRYPT_SHA - if (opts && opt_a[0] == 's') { - salt[1] = '5' + (strcmp(opt_a, "sha512") == 0); - crypt_make_salt(salt + 3, 16/2, 0); /* sha */ -#if TESTING - strcpy(salt, "$5$rounds=5000$toolongsaltstring"); - // with "This is just a test" as password, should produce: - // "$5$rounds=5000$toolongsaltstrin$Un/5jzAHMgOGZ5.mWJpuVolil07guHPvOW8mGRcvxa5" - strcpy(salt, "$6$rounds=5000$toolongsaltstring"); - // with "This is just a test" as password, should produce: - // "$6$rounds=5000$toolongsaltstrin$lQ8jolhgVRVhY4b5pZKaysCLi0QBxGoNeKQzQ3glMhwllF7oGDZxUhx1yxdYcz/e1JSbq3y6JMxxl8audkUEm0" -#endif - } else -#endif - { - crypt_make_salt(salt + 3, 8/2, 0); /* md5 */ -#if TESTING - strcpy(salt + 3, "ajg./bcf"); -#endif + if (opt_m[0] == 's') { /* sha */ + salt[1] = '5' + (strcmp(opt_m, "sha512") == 0); + len = 16/2; } +#endif } + if (opt_S) + safe_strncpy(salt_ptr, opt_S, sizeof(salt) - 3); + else + crypt_make_salt(salt_ptr, len, 0); + + xmove_fd(fd, STDIN_FILENO); - puts(pw_encrypt(argv[optind] ? argv[optind] : xmalloc_fgetline(stdin), salt, 1)); + puts(pw_encrypt( + argv[0] ? argv[0] : ( + /* Only mkpasswd, and only from tty, prompts. + * Otherwise it is a plain read. */ + (isatty(0) && applet_name[0] == 'm') + ? bb_ask(STDIN_FILENO, 0, "Password: ") + : xmalloc_fgetline(stdin) + ), + salt, 1)); - return 0; + return EXIT_SUCCESS; } diff --git a/loginutils/mkpasswd.c b/loginutils/mkpasswd.c deleted file mode 100644 index 442738e..0000000 --- a/loginutils/mkpasswd.c +++ /dev/null @@ -1,71 +0,0 @@ -/* vi: set sw=4 ts=4 sts=4: */ -/* - * mkpasswd - Overfeatured front end to crypt(3) - * Copyright (c) 2008 Bernhard Reutner-Fischer - * - * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. - */ - -#include "libbb.h" - -int mkpasswd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; -int mkpasswd_main(int argc UNUSED_PARAM, char **argv) -{ - char *chp = NULL, *method = NULL, *salt = NULL; - char *encrypted; - int fd = STDIN_FILENO; - enum { - OPT_P = (1 << 0), - OPT_s = (1 << 1), - OPT_m = (1 << 2), - OPT_S = (1 << 3) - }; - static const char methods[] ALIGN1 = - /*"des\0"*/"md5\0""sha-256\0""sha-512\0"; - enum { TYPE_des, TYPE_md5, TYPE_sha256, TYPE_sha512 }; - unsigned algo = TYPE_des, algobits = 1; -#if ENABLE_GETOPT_LONG - static const char mkpasswd_longopts[] ALIGN1 = - "password-fd\0" Required_argument "P" - "stdin\0" No_argument "s" - "method\0" Required_argument "m" - "salt\0" Required_argument "S" - ; - applet_long_options = mkpasswd_longopts; -#endif - opt_complementary = "?1"; /* at most one non-option argument */ - getopt32(argv, "P:sm:S:", &chp, &method, &salt); - argv += optind; - if (option_mask32 & OPT_P) - fd = xatoi_u(chp); - if (option_mask32 & OPT_m) - algo = index_in_strings(methods, method) + 1; - if (*argv) /* we have a cleartext passwd */ - chp = *argv; - else - chp = bb_ask(fd, 0, "Password: "); - if (!salt) - salt = xmalloc(128); - - if (algo) { - char foo[2]; - foo[0] = foo[2] = '$'; - algobits = 4; - /* MD5 == "$1$", SHA-256 == "$5$", SHA-512 == "$6$" */ - if (algo > 1) { - algo += 3; - algobits = 8; - } - foo[1] = '0' + (algo); - strcpy(salt, foo); - } - /* The opt_complementary adds a bit of additional noise, which is good - but not strictly needed. */ - crypt_make_salt(salt + ((!!algo) * 3), algobits, (int)&opt_complementary); - encrypted = pw_encrypt(chp, salt, 1); - puts(encrypted); - if (ENABLE_FEATURE_CLEAN_UP) { - free(encrypted); - } - return EXIT_SUCCESS; -} |