From b92e04f987841e7f571e417e7634a5131f957cff Mon Sep 17 00:00:00 2001 From: Seraphim Mellos Date: Fri, 1 Aug 2008 15:26:49 +0300 Subject: Added md5 support to pam_unix --- modules/pam_deny/pam_deny.o | Bin 0 -> 6944 bytes modules/pam_deny/pam_deny.so | Bin 0 -> 10286 bytes modules/pam_nologin/pam_nologin.o | Bin 0 -> 11856 bytes modules/pam_nologin/pam_nologin.so | Bin 0 -> 12938 bytes modules/pam_permit/pam_permit.o | Bin 0 -> 6864 bytes modules/pam_permit/pam_permit.so | Bin 0 -> 10240 bytes modules/pam_rootok/pam_rootok.o | Bin 0 -> 7840 bytes modules/pam_rootok/pam_rootok.so | Bin 0 -> 10975 bytes modules/pam_securetty/pam_securetty.o | Bin 0 -> 13344 bytes modules/pam_securetty/pam_securetty.so | Bin 0 -> 13121 bytes modules/pam_shells/pam_shells.o | Bin 0 -> 12976 bytes modules/pam_shells/pam_shells.so | Bin 0 -> 13153 bytes modules/pam_unix/md5.c | 263 +++++++++++++++++++++++++++++++++ modules/pam_unix/md5.h | 39 +++++ modules/pam_unix/pam_unix.c | 10 +- modules/pam_unix/pam_unix.o | Bin 0 -> 40400 bytes modules/pam_unix/pam_unix.so | Bin 0 -> 34773 bytes modules/pam_wheel/pam_wheel.o | Bin 0 -> 11504 bytes modules/pam_wheel/pam_wheel.so | Bin 0 -> 12477 bytes 19 files changed, 308 insertions(+), 4 deletions(-) create mode 100644 modules/pam_deny/pam_deny.o create mode 100755 modules/pam_deny/pam_deny.so create mode 100644 modules/pam_nologin/pam_nologin.o create mode 100755 modules/pam_nologin/pam_nologin.so create mode 100644 modules/pam_permit/pam_permit.o create mode 100755 modules/pam_permit/pam_permit.so create mode 100644 modules/pam_rootok/pam_rootok.o create mode 100755 modules/pam_rootok/pam_rootok.so create mode 100644 modules/pam_securetty/pam_securetty.o create mode 100755 modules/pam_securetty/pam_securetty.so create mode 100644 modules/pam_shells/pam_shells.o create mode 100755 modules/pam_shells/pam_shells.so create mode 100644 modules/pam_unix/md5.c create mode 100644 modules/pam_unix/md5.h create mode 100644 modules/pam_unix/pam_unix.o create mode 100755 modules/pam_unix/pam_unix.so create mode 100644 modules/pam_wheel/pam_wheel.o create mode 100755 modules/pam_wheel/pam_wheel.so diff --git a/modules/pam_deny/pam_deny.o b/modules/pam_deny/pam_deny.o new file mode 100644 index 0000000..0f133c7 Binary files /dev/null and b/modules/pam_deny/pam_deny.o differ diff --git a/modules/pam_deny/pam_deny.so b/modules/pam_deny/pam_deny.so new file mode 100755 index 0000000..08a6618 Binary files /dev/null and b/modules/pam_deny/pam_deny.so differ diff --git a/modules/pam_nologin/pam_nologin.o b/modules/pam_nologin/pam_nologin.o new file mode 100644 index 0000000..6931b69 Binary files /dev/null and b/modules/pam_nologin/pam_nologin.o differ diff --git a/modules/pam_nologin/pam_nologin.so b/modules/pam_nologin/pam_nologin.so new file mode 100755 index 0000000..feb7190 Binary files /dev/null and b/modules/pam_nologin/pam_nologin.so differ diff --git a/modules/pam_permit/pam_permit.o b/modules/pam_permit/pam_permit.o new file mode 100644 index 0000000..e9352da Binary files /dev/null and b/modules/pam_permit/pam_permit.o differ diff --git a/modules/pam_permit/pam_permit.so b/modules/pam_permit/pam_permit.so new file mode 100755 index 0000000..5e3a8fc Binary files /dev/null and b/modules/pam_permit/pam_permit.so differ diff --git a/modules/pam_rootok/pam_rootok.o b/modules/pam_rootok/pam_rootok.o new file mode 100644 index 0000000..07bbcb7 Binary files /dev/null and b/modules/pam_rootok/pam_rootok.o differ diff --git a/modules/pam_rootok/pam_rootok.so b/modules/pam_rootok/pam_rootok.so new file mode 100755 index 0000000..6180791 Binary files /dev/null and b/modules/pam_rootok/pam_rootok.so differ diff --git a/modules/pam_securetty/pam_securetty.o b/modules/pam_securetty/pam_securetty.o new file mode 100644 index 0000000..31105ff Binary files /dev/null and b/modules/pam_securetty/pam_securetty.o differ diff --git a/modules/pam_securetty/pam_securetty.so b/modules/pam_securetty/pam_securetty.so new file mode 100755 index 0000000..adbaaca Binary files /dev/null and b/modules/pam_securetty/pam_securetty.so differ diff --git a/modules/pam_shells/pam_shells.o b/modules/pam_shells/pam_shells.o new file mode 100644 index 0000000..28c5690 Binary files /dev/null and b/modules/pam_shells/pam_shells.o differ diff --git a/modules/pam_shells/pam_shells.so b/modules/pam_shells/pam_shells.so new file mode 100755 index 0000000..5aec0e4 Binary files /dev/null and b/modules/pam_shells/pam_shells.so differ diff --git a/modules/pam_unix/md5.c b/modules/pam_unix/md5.c new file mode 100644 index 0000000..a9377f1 --- /dev/null +++ b/modules/pam_unix/md5.c @@ -0,0 +1,263 @@ +/* + * This code implements the MD5 message-digest algorithm. + * The algorithm is due to Ron Rivest. This code was + * written by Colin Plumb in 1993, no copyright is claimed. + * This code is in the public domain; do with it what you wish. + * + * Equivalent code is available from RSA Data Security, Inc. + * This code has been tested against that, and is equivalent, + * except that you don't need to include two pages of legalese + * with every copy. + * + * To compute the message digest of a chunk of bytes, declare an + * MD5Context structure, pass it to MD5Init, call MD5Update as + * needed on buffers full of bytes, and then call MD5Final, which + * will fill a supplied 16-byte array with the digest. + */ + +#include +#include +#include "md5.h" + +#define PUT_64BIT_LE(cp, value) do { \ + (cp)[7] = (value) >> 56; \ + (cp)[6] = (value) >> 48; \ + (cp)[5] = (value) >> 40; \ + (cp)[4] = (value) >> 32; \ + (cp)[3] = (value) >> 24; \ + (cp)[2] = (value) >> 16; \ + (cp)[1] = (value) >> 8; \ + (cp)[0] = (value); } while (0) + +#define PUT_32BIT_LE(cp, value) do { \ + (cp)[3] = (value) >> 24; \ + (cp)[2] = (value) >> 16; \ + (cp)[1] = (value) >> 8; \ + (cp)[0] = (value); } while (0) + +static u_int8_t PADDING[MD5_BLOCK_LENGTH] = { + 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 +}; + +/* + * Start MD5 accumulation. Set bit count to 0 and buffer to mysterious + * initialization constants. + */ +void +MD5Init(MD5_CTX *ctx) +{ + ctx->count = 0; + ctx->state[0] = 0x67452301; + ctx->state[1] = 0xefcdab89; + ctx->state[2] = 0x98badcfe; + ctx->state[3] = 0x10325476; +} + +/* + * Update context to reflect the concatenation of another buffer full + * of bytes. + */ +void +MD5Update(MD5_CTX *ctx, const unsigned char *input, size_t len) +{ + size_t have, need; + + /* Check how many bytes we already have and how many more we need. */ + have = (size_t)((ctx->count >> 3) & (MD5_BLOCK_LENGTH - 1)); + need = MD5_BLOCK_LENGTH - have; + + /* Update bitcount */ + ctx->count += (u_int64_t)len << 3; + + if (len >= need) { + if (have != 0) { + memcpy(ctx->buffer + have, input, need); + MD5Transform(ctx->state, ctx->buffer); + input += need; + len -= need; + have = 0; + } + + /* Process data in MD5_BLOCK_LENGTH-byte chunks. */ + while (len >= MD5_BLOCK_LENGTH) { + MD5Transform(ctx->state, input); + input += MD5_BLOCK_LENGTH; + len -= MD5_BLOCK_LENGTH; + } + } + + /* Handle any remaining bytes of data. */ + if (len != 0) + memcpy(ctx->buffer + have, input, len); +} + +/* + * Pad pad to 64-byte boundary with the bit pattern + * 1 0* (64-bit count of bits processed, MSB-first) + */ +void +MD5Pad(MD5_CTX *ctx) +{ + u_int8_t count[8]; + size_t padlen; + + /* Convert count to 8 bytes in little endian order. */ + PUT_64BIT_LE(count, ctx->count); + + /* Pad out to 56 mod 64. */ + padlen = MD5_BLOCK_LENGTH - + ((ctx->count >> 3) & (MD5_BLOCK_LENGTH - 1)); + if (padlen < 1 + 8) + padlen += MD5_BLOCK_LENGTH; + MD5Update(ctx, PADDING, padlen - 8); /* padlen - 8 <= 64 */ + MD5Update(ctx, count, 8); +} + +/* + * Final wrapup--call MD5Pad, fill in digest and zero out ctx. + */ +void +MD5Final(unsigned char digest[MD5_DIGEST_LENGTH], MD5_CTX *ctx) +{ + int i; + + MD5Pad(ctx); + if (digest != NULL) { + for (i = 0; i < 4; i++) + PUT_32BIT_LE(digest + i * 4, ctx->state[i]); + memset(ctx, 0, sizeof(*ctx)); + } +} + + +/* The four core functions - F1 is optimized somewhat */ + +/* #define F1(x, y, z) (x & y | ~x & z) */ +#define F1(x, y, z) (z ^ (x & (y ^ z))) +#define F2(x, y, z) F1(z, x, y) +#define F3(x, y, z) (x ^ y ^ z) +#define F4(x, y, z) (y ^ (x | ~z)) + +/* This is the central step in the MD5 algorithm. */ +#define MD5STEP(f, w, x, y, z, data, s) \ + ( w += f(x, y, z) + data, w = w<>(32-s), w += x ) + +/* + * The core of the MD5 algorithm, this alters an existing MD5 hash to + * reflect the addition of 16 longwords of new data. MD5Update blocks + * the data and converts bytes into longwords for this routine. + */ +void +MD5Transform(u_int32_t state[4], const u_int8_t block[MD5_BLOCK_LENGTH]) +{ + u_int32_t a, b, c, d, in[MD5_BLOCK_LENGTH / 4]; + +#if BYTE_ORDER == LITTLE_ENDIAN + memcpy(in, block, sizeof(in)); +#else + for (a = 0; a < MD5_BLOCK_LENGTH / 4; a++) { + in[a] = (u_int32_t)( + (u_int32_t)(block[a * 4 + 0]) | + (u_int32_t)(block[a * 4 + 1]) << 8 | + (u_int32_t)(block[a * 4 + 2]) << 16 | + (u_int32_t)(block[a * 4 + 3]) << 24); + } +#endif + + a = state[0]; + b = state[1]; + c = state[2]; + d = state[3]; + + MD5STEP(F1, a, b, c, d, in[ 0] + 0xd76aa478, 7); + MD5STEP(F1, d, a, b, c, in[ 1] + 0xe8c7b756, 12); + MD5STEP(F1, c, d, a, b, in[ 2] + 0x242070db, 17); + MD5STEP(F1, b, c, d, a, in[ 3] + 0xc1bdceee, 22); + MD5STEP(F1, a, b, c, d, in[ 4] + 0xf57c0faf, 7); + MD5STEP(F1, d, a, b, c, in[ 5] + 0x4787c62a, 12); + MD5STEP(F1, c, d, a, b, in[ 6] + 0xa8304613, 17); + MD5STEP(F1, b, c, d, a, in[ 7] + 0xfd469501, 22); + MD5STEP(F1, a, b, c, d, in[ 8] + 0x698098d8, 7); + MD5STEP(F1, d, a, b, c, in[ 9] + 0x8b44f7af, 12); + MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17); + MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22); + MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7); + MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12); + MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17); + MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22); + + MD5STEP(F2, a, b, c, d, in[ 1] + 0xf61e2562, 5); + MD5STEP(F2, d, a, b, c, in[ 6] + 0xc040b340, 9); + MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14); + MD5STEP(F2, b, c, d, a, in[ 0] + 0xe9b6c7aa, 20); + MD5STEP(F2, a, b, c, d, in[ 5] + 0xd62f105d, 5); + MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9); + MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14); + MD5STEP(F2, b, c, d, a, in[ 4] + 0xe7d3fbc8, 20); + MD5STEP(F2, a, b, c, d, in[ 9] + 0x21e1cde6, 5); + MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9); + MD5STEP(F2, c, d, a, b, in[ 3] + 0xf4d50d87, 14); + MD5STEP(F2, b, c, d, a, in[ 8] + 0x455a14ed, 20); + MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5); + MD5STEP(F2, d, a, b, c, in[ 2] + 0xfcefa3f8, 9); + MD5STEP(F2, c, d, a, b, in[ 7] + 0x676f02d9, 14); + MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20); + + MD5STEP(F3, a, b, c, d, in[ 5] + 0xfffa3942, 4); + MD5STEP(F3, d, a, b, c, in[ 8] + 0x8771f681, 11); + MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16); + MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23); + MD5STEP(F3, a, b, c, d, in[ 1] + 0xa4beea44, 4); + MD5STEP(F3, d, a, b, c, in[ 4] + 0x4bdecfa9, 11); + MD5STEP(F3, c, d, a, b, in[ 7] + 0xf6bb4b60, 16); + MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23); + MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4); + MD5STEP(F3, d, a, b, c, in[ 0] + 0xeaa127fa, 11); + MD5STEP(F3, c, d, a, b, in[ 3] + 0xd4ef3085, 16); + MD5STEP(F3, b, c, d, a, in[ 6] + 0x04881d05, 23); + MD5STEP(F3, a, b, c, d, in[ 9] + 0xd9d4d039, 4); + MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11); + MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16); + MD5STEP(F3, b, c, d, a, in[2 ] + 0xc4ac5665, 23); + + MD5STEP(F4, a, b, c, d, in[ 0] + 0xf4292244, 6); + MD5STEP(F4, d, a, b, c, in[7 ] + 0x432aff97, 10); + MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15); + MD5STEP(F4, b, c, d, a, in[5 ] + 0xfc93a039, 21); + MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6); + MD5STEP(F4, d, a, b, c, in[3 ] + 0x8f0ccc92, 10); + MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15); + MD5STEP(F4, b, c, d, a, in[1 ] + 0x85845dd1, 21); + MD5STEP(F4, a, b, c, d, in[8 ] + 0x6fa87e4f, 6); + MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10); + MD5STEP(F4, c, d, a, b, in[6 ] + 0xa3014314, 15); + MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21); + MD5STEP(F4, a, b, c, d, in[4 ] + 0xf7537e82, 6); + MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10); + MD5STEP(F4, c, d, a, b, in[2 ] + 0x2ad7d2bb, 15); + MD5STEP(F4, b, c, d, a, in[9 ] + 0xeb86d391, 21); + + state[0] += a; + state[1] += b; + state[2] += c; + state[3] += d; +} +/* + * MD5String: takes a string as an argument and returns the + * digest for this string. + */ + +char * MD5String(const char * string) { + + MD5_CTX mdContext; + unsigned int length = strlen(string); + + MD5Init(&mdContext); + MD5Update(&mdContext, string, length); + MD5Final (&mdContext); + + return (mdContext->digest); + +} diff --git a/modules/pam_unix/md5.h b/modules/pam_unix/md5.h new file mode 100644 index 0000000..ab381e8 --- /dev/null +++ b/modules/pam_unix/md5.h @@ -0,0 +1,39 @@ +/* + * This code implements the MD5 message-digest algorithm. + * The algorithm is due to Ron Rivest. This code was + * written by Colin Plumb in 1993, no copyright is claimed. + * This code is in the public domain; do with it what you wish. + * + * Equivalent code is available from RSA Data Security, Inc. + * This code has been tested against that, and is equivalent, + * except that you don't need to include two pages of legalese + * with every copy. + */ + +#ifndef _MD5_H_ +#define _MD5_H_ + +#define MD5_BLOCK_LENGTH 64 +#define MD5_DIGEST_LENGTH 16 +#define MD5_DIGEST_STRING_LENGTH (MD5_DIGEST_LENGTH * 2 + 1) + +typedef struct MD5Context { + u_int32_t state[4]; /* state */ + u_int64_t count; /* number of bits, mod 2^64 */ + u_int8_t buffer[MD5_BLOCK_LENGTH]; /* input buffer */ +} MD5_CTX; + + +__BEGIN_DECLS +void MD5Init(MD5_CTX *); +void MD5Update(MD5_CTX *, const u_int8_t *, size_t); +void MD5Pad(MD5_CTX *); +void MD5Final(u_int8_t [MD5_DIGEST_LENGTH], MD5_CTX *); +void MD5Transform(u_int32_t [4], const u_int8_t [MD5_BLOCK_LENGTH]); +char *MD5End(MD5_CTX *, char *); +char *MD5File(const char *, char *); +char *MD5FileChunk(const char *, char *, off_t, off_t); +char *MD5Data(const u_int8_t *, size_t, char *); +__END_DECLS + +#endif /* _MD5_H_ */ diff --git a/modules/pam_unix/pam_unix.c b/modules/pam_unix/pam_unix.c index fd0ce59..b750712 100644 --- a/modules/pam_unix/pam_unix.c +++ b/modules/pam_unix/pam_unix.c @@ -32,6 +32,7 @@ #include +extern char * MD5String (char *) ; /* * Helper functions for internal use */ @@ -351,12 +352,13 @@ pam_sm_chauthtok(pam_handle_t *pamh, int flags, !openpam_get_option(pamh, PAM_OPT_NULLOK)) return (PAM_PERM_DENIED); - makesalt(salt); /* Update shadow/passwd entries for Linux */ if ( openpam_get_option (pamh, PAM_OPT_MD5) ) - PAM_ERROR("MD5 not supported yet. Using standar crypt..."); - - pam_err = update_shadow( pamh ,user,crypt(new_pass, salt)); + pam_err = update_shadow( pamh ,user, MD5String(new_pass)) ; + else { + makesalt(salt); + pam_err = update_shadow( pamh ,user,crypt(new_pass, salt)); + } if ( pam_err != PAM_SUCCESS) return (pam_err); diff --git a/modules/pam_unix/pam_unix.o b/modules/pam_unix/pam_unix.o new file mode 100644 index 0000000..fe7a507 Binary files /dev/null and b/modules/pam_unix/pam_unix.o differ diff --git a/modules/pam_unix/pam_unix.so b/modules/pam_unix/pam_unix.so new file mode 100755 index 0000000..5974583 Binary files /dev/null and b/modules/pam_unix/pam_unix.so differ diff --git a/modules/pam_wheel/pam_wheel.o b/modules/pam_wheel/pam_wheel.o new file mode 100644 index 0000000..a629c2f Binary files /dev/null and b/modules/pam_wheel/pam_wheel.o differ diff --git a/modules/pam_wheel/pam_wheel.so b/modules/pam_wheel/pam_wheel.so new file mode 100755 index 0000000..b59efe6 Binary files /dev/null and b/modules/pam_wheel/pam_wheel.so differ -- cgit v1.2.3-65-gdbad