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The following parser functions have been rewritten to make use of input_tokenizer():

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ikepsk_md5_parse_hash
ikepsk_sha1_parse_hash
This commit is contained in:
jsteube 2018-07-04 12:58:30 +02:00
parent afd5fa760c
commit 7e18ab05be
2 changed files with 141 additions and 97 deletions
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4
include/interface.h
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@ -1020,10 +1020,6 @@ typedef struct hccapx hccapx_t;
typedef enum display_len
{
DISPLAY_LEN_MIN_5300 = 48,
DISPLAY_LEN_MAX_5300 = 1024,
DISPLAY_LEN_MIN_5400 = 56,
DISPLAY_LEN_MAX_5400 = 1024,
DISPLAY_LEN_MIN_6300 = 6 + 1 + 8 + 22,
DISPLAY_LEN_MAX_6300 = 6 + 1 + 48 + 22,
DISPLAY_LEN_MIN_6400 = 9 + 2 + 1 + 16 + 1 + 43,

234
src/interface.c
View File

@ -6424,81 +6424,105 @@ int chacha20_parse_hash (u8 *input_buf, u32 input_len, hash_t *hash_buf, MAYBE_U
int ikepsk_md5_parse_hash (u8 *input_buf, u32 input_len, hash_t *hash_buf, MAYBE_UNUSED hashconfig_t *hashconfig)
{
if ((input_len < DISPLAY_LEN_MIN_5300) || (input_len > DISPLAY_LEN_MAX_5300)) return (PARSER_GLOBAL_LENGTH);
u32 *digest = (u32 *) hash_buf->digest;
salt_t *salt = hash_buf->salt;
ikepsk_t *ikepsk = (ikepsk_t *) hash_buf->esalt;
/**
* Parse that strange long line
*/
token_t token;
u8 *in_off[9];
token.token_cnt = 9;
size_t in_len[9] = { 0 };
token.sep[0] = hashconfig->separator;
token.len_min[0] = 0;
token.len_max[0] = 1024;
token.attr[0] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_HEX;
if (input_buf == NULL) return (PARSER_HASH_VALUE);
token.sep[1] = hashconfig->separator;
token.len_min[1] = 0;
token.len_max[1] = 1024;
token.attr[1] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_HEX;
char tmp_buf[HCBUFSIZ_TINY] = { 0 };
token.sep[2] = hashconfig->separator;
token.len_min[2] = 0;
token.len_max[2] = 1024;
token.attr[2] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_HEX;
memcpy (tmp_buf, input_buf, input_len);
token.sep[3] = hashconfig->separator;
token.len_min[3] = 0;
token.len_max[3] = 1024;
token.attr[3] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_HEX;
char *saveptr = NULL;
token.sep[4] = hashconfig->separator;
token.len_min[4] = 0;
token.len_max[4] = 1024;
token.attr[4] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_HEX;
in_off[0] = (u8 *) strtok_r (tmp_buf, ":", &saveptr);
token.sep[5] = hashconfig->separator;
token.len_min[5] = 0;
token.len_max[5] = 1024;
token.attr[5] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_HEX;
if (in_off[0] == NULL) return (PARSER_SEPARATOR_UNMATCHED);
token.sep[6] = hashconfig->separator;
token.len_min[6] = 0;
token.len_max[6] = 128;
token.attr[6] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_HEX;
in_len[0] = strlen ((const char *) in_off[0]);
token.sep[7] = hashconfig->separator;
token.len_min[7] = 0;
token.len_max[7] = 128;
token.attr[7] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_HEX;
size_t i;
token.sep[8] = hashconfig->separator;
token.len_min[8] = 32;
token.len_max[8] = 32;
token.attr[8] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_HEX;
for (i = 1; i < 9; i++)
{
in_off[i] = (u8 *) strtok_r ((char *) NULL, ":", &saveptr);
const int rc_tokenizer = input_tokenizer (input_buf, input_len, &token);
if (in_off[i] == NULL) return (PARSER_SEPARATOR_UNMATCHED);
if (rc_tokenizer != PARSER_OK) return (rc_tokenizer);
in_len[i] = strlen ((const char *) in_off[i]);
}
ikepsk->msg_len = (token.len[0] + token.len[1] + token.len[2] + token.len[3] + token.len[4] + token.len[5]) / 2;
ikepsk->nr_len = (token.len[6] + token.len[7]) / 2;
u8 *ptr = (u8 *) ikepsk->msg_buf;
if (ikepsk->msg_len > 512) return (PARSER_SALT_LENGTH);
if (ikepsk->nr_len > 64) return (PARSER_SALT_LENGTH);
for (i = 0; i < in_len[0]; i += 2) *ptr++ = hex_to_u8 ((const u8 *) in_off[0] + i);
for (i = 0; i < in_len[1]; i += 2) *ptr++ = hex_to_u8 ((const u8 *) in_off[1] + i);
for (i = 0; i < in_len[2]; i += 2) *ptr++ = hex_to_u8 ((const u8 *) in_off[2] + i);
for (i = 0; i < in_len[3]; i += 2) *ptr++ = hex_to_u8 ((const u8 *) in_off[3] + i);
for (i = 0; i < in_len[4]; i += 2) *ptr++ = hex_to_u8 ((const u8 *) in_off[4] + i);
for (i = 0; i < in_len[5]; i += 2) *ptr++ = hex_to_u8 ((const u8 *) in_off[5] + i);
u8 *ptr1 = (u8 *) ikepsk->msg_buf;
u8 *ptr2 = (u8 *) ikepsk->nr_buf;
*ptr = 0x80;
for (int i = 0; i < token.len[0]; i += 2) *ptr1++ = hex_to_u8 (token.buf[0] + i);
for (int i = 0; i < token.len[1]; i += 2) *ptr1++ = hex_to_u8 (token.buf[1] + i);
for (int i = 0; i < token.len[2]; i += 2) *ptr1++ = hex_to_u8 (token.buf[2] + i);
for (int i = 0; i < token.len[3]; i += 2) *ptr1++ = hex_to_u8 (token.buf[3] + i);
for (int i = 0; i < token.len[4]; i += 2) *ptr1++ = hex_to_u8 (token.buf[4] + i);
for (int i = 0; i < token.len[5]; i += 2) *ptr1++ = hex_to_u8 (token.buf[5] + i);
for (int i = 0; i < token.len[6]; i += 2) *ptr2++ = hex_to_u8 (token.buf[6] + i);
for (int i = 0; i < token.len[7]; i += 2) *ptr2++ = hex_to_u8 (token.buf[7] + i);
ikepsk->msg_len = (in_len[0] + in_len[1] + in_len[2] + in_len[3] + in_len[4] + in_len[5]) / 2;
ptr = (u8 *) ikepsk->nr_buf;
for (i = 0; i < in_len[6]; i += 2) *ptr++ = hex_to_u8 ((const u8 *) in_off[6] + i);
for (i = 0; i < in_len[7]; i += 2) *ptr++ = hex_to_u8 ((const u8 *) in_off[7] + i);
*ptr = 0x80;
ikepsk->nr_len = (in_len[6] + in_len[7]) / 2;
*ptr1++ = 0x80;
*ptr2++ = 0x80;
/**
* Store to database
*/
ptr = in_off[8];
u8 *hash_pos = token.buf[8];
if (is_valid_hex_string (ptr, 32) == false) return (PARSER_HASH_ENCODING);
digest[0] = hex_to_u32 ((const u8 *) &ptr[ 0]);
digest[1] = hex_to_u32 ((const u8 *) &ptr[ 8]);
digest[2] = hex_to_u32 ((const u8 *) &ptr[16]);
digest[3] = hex_to_u32 ((const u8 *) &ptr[24]);
digest[0] = hex_to_u32 (hash_pos + 0);
digest[1] = hex_to_u32 (hash_pos + 8);
digest[2] = hex_to_u32 (hash_pos + 16);
digest[3] = hex_to_u32 (hash_pos + 24);
salt->salt_len = 32;
@ -6516,82 +6540,106 @@ int ikepsk_md5_parse_hash (u8 *input_buf, u32 input_len, hash_t *hash_buf, MAYBE
int ikepsk_sha1_parse_hash (u8 *input_buf, u32 input_len, hash_t *hash_buf, MAYBE_UNUSED hashconfig_t *hashconfig)
{
if ((input_len < DISPLAY_LEN_MIN_5400) || (input_len > DISPLAY_LEN_MAX_5400)) return (PARSER_GLOBAL_LENGTH);
u32 *digest = (u32 *) hash_buf->digest;
salt_t *salt = hash_buf->salt;
ikepsk_t *ikepsk = (ikepsk_t *) hash_buf->esalt;
/**
* Parse that strange long line
*/
token_t token;
u8 *in_off[9];
token.token_cnt = 9;
size_t in_len[9] = { 0 };
token.sep[0] = hashconfig->separator;
token.len_min[0] = 0;
token.len_max[0] = 1024;
token.attr[0] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_HEX;
if (input_buf == NULL) return (PARSER_HASH_VALUE);
token.sep[1] = hashconfig->separator;
token.len_min[1] = 0;
token.len_max[1] = 1024;
token.attr[1] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_HEX;
char tmp_buf[HCBUFSIZ_TINY] = { 0 };
token.sep[2] = hashconfig->separator;
token.len_min[2] = 0;
token.len_max[2] = 1024;
token.attr[2] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_HEX;
memcpy (tmp_buf, input_buf, input_len);
token.sep[3] = hashconfig->separator;
token.len_min[3] = 0;
token.len_max[3] = 1024;
token.attr[3] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_HEX;
char *saveptr = NULL;
token.sep[4] = hashconfig->separator;
token.len_min[4] = 0;
token.len_max[4] = 1024;
token.attr[4] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_HEX;
in_off[0] = (u8 *) strtok_r (tmp_buf, ":", &saveptr);
token.sep[5] = hashconfig->separator;
token.len_min[5] = 0;
token.len_max[5] = 1024;
token.attr[5] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_HEX;
if (in_off[0] == NULL) return (PARSER_SEPARATOR_UNMATCHED);
token.sep[6] = hashconfig->separator;
token.len_min[6] = 0;
token.len_max[6] = 128;
token.attr[6] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_HEX;
in_len[0] = strlen ((const char *) in_off[0]);
token.sep[7] = hashconfig->separator;
token.len_min[7] = 0;
token.len_max[7] = 128;
token.attr[7] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_HEX;
size_t i;
token.sep[8] = hashconfig->separator;
token.len_min[8] = 40;
token.len_max[8] = 40;
token.attr[8] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_HEX;
for (i = 1; i < 9; i++)
{
in_off[i] = (u8 *) strtok_r ((char *) NULL, ":", &saveptr);
const int rc_tokenizer = input_tokenizer (input_buf, input_len, &token);
if (in_off[i] == NULL) return (PARSER_SEPARATOR_UNMATCHED);
if (rc_tokenizer != PARSER_OK) return (rc_tokenizer);
in_len[i] = strlen ((const char *) in_off[i]);
}
ikepsk->msg_len = (token.len[0] + token.len[1] + token.len[2] + token.len[3] + token.len[4] + token.len[5]) / 2;
ikepsk->nr_len = (token.len[6] + token.len[7]) / 2;
u8 *ptr = (u8 *) ikepsk->msg_buf;
if (ikepsk->msg_len > 512) return (PARSER_SALT_LENGTH);
if (ikepsk->nr_len > 64) return (PARSER_SALT_LENGTH);
for (i = 0; i < in_len[0]; i += 2) *ptr++ = hex_to_u8 ((const u8 *) in_off[0] + i);
for (i = 0; i < in_len[1]; i += 2) *ptr++ = hex_to_u8 ((const u8 *) in_off[1] + i);
for (i = 0; i < in_len[2]; i += 2) *ptr++ = hex_to_u8 ((const u8 *) in_off[2] + i);
for (i = 0; i < in_len[3]; i += 2) *ptr++ = hex_to_u8 ((const u8 *) in_off[3] + i);
for (i = 0; i < in_len[4]; i += 2) *ptr++ = hex_to_u8 ((const u8 *) in_off[4] + i);
for (i = 0; i < in_len[5]; i += 2) *ptr++ = hex_to_u8 ((const u8 *) in_off[5] + i);
u8 *ptr1 = (u8 *) ikepsk->msg_buf;
u8 *ptr2 = (u8 *) ikepsk->nr_buf;
*ptr = 0x80;
for (int i = 0; i < token.len[0]; i += 2) *ptr1++ = hex_to_u8 (token.buf[0] + i);
for (int i = 0; i < token.len[1]; i += 2) *ptr1++ = hex_to_u8 (token.buf[1] + i);
for (int i = 0; i < token.len[2]; i += 2) *ptr1++ = hex_to_u8 (token.buf[2] + i);
for (int i = 0; i < token.len[3]; i += 2) *ptr1++ = hex_to_u8 (token.buf[3] + i);
for (int i = 0; i < token.len[4]; i += 2) *ptr1++ = hex_to_u8 (token.buf[4] + i);
for (int i = 0; i < token.len[5]; i += 2) *ptr1++ = hex_to_u8 (token.buf[5] + i);
for (int i = 0; i < token.len[6]; i += 2) *ptr2++ = hex_to_u8 (token.buf[6] + i);
for (int i = 0; i < token.len[7]; i += 2) *ptr2++ = hex_to_u8 (token.buf[7] + i);
ikepsk->msg_len = (in_len[0] + in_len[1] + in_len[2] + in_len[3] + in_len[4] + in_len[5]) / 2;
ptr = (u8 *) ikepsk->nr_buf;
for (i = 0; i < in_len[6]; i += 2) *ptr++ = hex_to_u8 ((const u8 *) in_off[6] + i);
for (i = 0; i < in_len[7]; i += 2) *ptr++ = hex_to_u8 ((const u8 *) in_off[7] + i);
*ptr = 0x80;
ikepsk->nr_len = (in_len[6] + in_len[7]) / 2;
*ptr1++ = 0x80;
*ptr2++ = 0x80;
/**
* Store to database
*/
ptr = in_off[8];
u8 *hash_pos = token.buf[8];
if (is_valid_hex_string (ptr, 40) == false) return (PARSER_HASH_ENCODING);
digest[0] = hex_to_u32 ((const u8 *) &ptr[ 0]);
digest[1] = hex_to_u32 ((const u8 *) &ptr[ 8]);
digest[2] = hex_to_u32 ((const u8 *) &ptr[16]);
digest[3] = hex_to_u32 ((const u8 *) &ptr[24]);
digest[4] = hex_to_u32 ((const u8 *) &ptr[32]);
digest[0] = hex_to_u32 (hash_pos + 0);
digest[1] = hex_to_u32 (hash_pos + 8);
digest[2] = hex_to_u32 (hash_pos + 16);
digest[3] = hex_to_u32 (hash_pos + 24);
digest[4] = hex_to_u32 (hash_pos + 32);
digest[0] = byte_swap_32 (digest[0]);
digest[1] = byte_swap_32 (digest[1]);