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Code Issues Releases Wiki Activity

Move parse_and_store_generic_salt to shared.c

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This commit is contained in:
jsteube 2019-01-10 20:51:38 +01:00
parent 269245171d
commit fcfd07ceb2
3 changed files with 118 additions and 116 deletions
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2
include/shared.h
View File

@ -87,6 +87,8 @@ int select_read_timeout_console (const int sec);
const char *strparser (const u32 parser_status);
bool parse_and_store_generic_salt (u8 *out_buf, int *out_len, const u8 *in_buf, const int in_len, MAYBE_UNUSED const hashconfig_t *hashconfig);
int input_tokenizer (const u8 *input_buf, const int input_len, token_t *token);
void decoder_apply_optimizer (const hashconfig_t *hashconfig, void *data);

116
src/interface.c
View File

@ -346,122 +346,6 @@ const char *stroptitype (const u32 opti_type)
* parsing
*/
static bool parse_and_store_generic_salt (u8 *out_buf, int *out_len, const u8 *in_buf, const int in_len, MAYBE_UNUSED hashconfig_t *hashconfig)
{
u32 tmp_u32[(64 * 2) + 1] = { 0 };
if (in_len > 512) return false; // 512 = 2 * 256 -- (2 * because of hex), 256 because of maximum salt length in salt_t
if (hashconfig->opts_type & OPTS_TYPE_ST_HEX)
{
if (in_len < (int) (hashconfig->salt_min * 2)) return false;
if (in_len > (int) (hashconfig->salt_max * 2)) return false;
}
else
{
if (in_len < (int) hashconfig->salt_min) return false;
if (in_len > (int) hashconfig->salt_max) return false;
}
u8 *tmp_buf = (u8 *) tmp_u32;
int tmp_len = 0;
if (hashconfig->opts_type & OPTS_TYPE_ST_HEX)
{
if (tmp_len & 1) return false;
tmp_len = in_len / 2;
for (int i = 0, j = 0; i < tmp_len; i += 1, j += 2)
{
u8 p0 = in_buf[j + 0];
u8 p1 = in_buf[j + 1];
tmp_buf[i] = hex_convert (p1) << 0;
tmp_buf[i] |= hex_convert (p0) << 4;
}
}
else if (hashconfig->opts_type & OPTS_TYPE_ST_BASE64)
{
tmp_len = base64_decode (base64_to_int, (const u8 *) in_buf, in_len, tmp_buf);
}
else
{
if (in_len) memcpy (tmp_buf, in_buf, in_len);
tmp_len = in_len;
}
if (hashconfig->opts_type & OPTS_TYPE_ST_UTF16LE)
{
if (tmp_len >= 128) return false;
for (int i = 64 - 1; i >= 1; i -= 2)
{
const u32 v = tmp_u32[i / 2];
tmp_u32[i - 0] = ((v >> 8) & 0x00FF0000) | ((v >> 16) & 0x000000FF);
tmp_u32[i - 1] = ((v << 8) & 0x00FF0000) | ((v >> 0) & 0x000000FF);
}
tmp_len = tmp_len * 2;
}
if (hashconfig->opts_type & OPTS_TYPE_ST_LOWER)
{
lowercase (tmp_buf, tmp_len);
}
if (hashconfig->opts_type & OPTS_TYPE_ST_UPPER)
{
uppercase (tmp_buf, tmp_len);
}
int tmp2_len = tmp_len;
if (hashconfig->opts_type & OPTS_TYPE_ST_ADD80)
{
if (tmp2_len >= 256) return false;
tmp_buf[tmp2_len++] = 0x80;
}
if (hashconfig->opts_type & OPTS_TYPE_ST_ADD01)
{
if (tmp2_len >= 256) return false;
tmp_buf[tmp2_len++] = 0x01;
}
if (hashconfig->opts_type & OPTS_TYPE_ST_GENERATE_LE)
{
u32 max = tmp2_len / 4;
if (tmp2_len % 4) max++;
for (u32 i = 0; i < max; i++)
{
tmp_u32[i] = byte_swap_32 (tmp_u32[i]);
}
// Important: we may need to increase the length of memcpy since
// we don't want to "loose" some swapped bytes (could happen if
// they do not perfectly fit in the 4-byte blocks)
// Memcpy does always copy the bytes in the BE order, but since
// we swapped them, some important bytes could be in positions
// we normally skip with the original len
if (tmp2_len % 4) tmp2_len += 4 - (tmp2_len % 4);
}
memcpy (out_buf, tmp_buf, tmp2_len);
*out_len = tmp_len;
return true;
}
int ascii_digest (const hashconfig_t *hashconfig, const hashes_t *hashes, const module_ctx_t *module_ctx, char *out_buf, const int out_size, const u32 salt_pos, const u32 digest_pos)
{
void *digests_buf = hashes->digests_buf;

116
src/shared.c
View File

@ -1312,3 +1312,119 @@ void encoder_apply_options (const hashconfig_t *hashconfig, void *data)
}
}
}
bool parse_and_store_generic_salt (u8 *out_buf, int *out_len, const u8 *in_buf, const int in_len, MAYBE_UNUSED const hashconfig_t *hashconfig)
{
u32 tmp_u32[(64 * 2) + 1] = { 0 };
if (in_len > 512) return false; // 512 = 2 * 256 -- (2 * because of hex), 256 because of maximum salt length in salt_t
if (hashconfig->opts_type & OPTS_TYPE_ST_HEX)
{
if (in_len < (int) (hashconfig->salt_min * 2)) return false;
if (in_len > (int) (hashconfig->salt_max * 2)) return false;
}
else
{
if (in_len < (int) hashconfig->salt_min) return false;
if (in_len > (int) hashconfig->salt_max) return false;
}
u8 *tmp_buf = (u8 *) tmp_u32;
int tmp_len = 0;
if (hashconfig->opts_type & OPTS_TYPE_ST_HEX)
{
if (tmp_len & 1) return false;
tmp_len = in_len / 2;
for (int i = 0, j = 0; i < tmp_len; i += 1, j += 2)
{
u8 p0 = in_buf[j + 0];
u8 p1 = in_buf[j + 1];
tmp_buf[i] = hex_convert (p1) << 0;
tmp_buf[i] |= hex_convert (p0) << 4;
}
}
else if (hashconfig->opts_type & OPTS_TYPE_ST_BASE64)
{
tmp_len = base64_decode (base64_to_int, (const u8 *) in_buf, in_len, tmp_buf);
}
else
{
if (in_len) memcpy (tmp_buf, in_buf, in_len);
tmp_len = in_len;
}
if (hashconfig->opts_type & OPTS_TYPE_ST_UTF16LE)
{
if (tmp_len >= 128) return false;
for (int i = 64 - 1; i >= 1; i -= 2)
{
const u32 v = tmp_u32[i / 2];
tmp_u32[i - 0] = ((v >> 8) & 0x00FF0000) | ((v >> 16) & 0x000000FF);
tmp_u32[i - 1] = ((v << 8) & 0x00FF0000) | ((v >> 0) & 0x000000FF);
}
tmp_len = tmp_len * 2;
}
if (hashconfig->opts_type & OPTS_TYPE_ST_LOWER)
{
lowercase (tmp_buf, tmp_len);
}
if (hashconfig->opts_type & OPTS_TYPE_ST_UPPER)
{
uppercase (tmp_buf, tmp_len);
}
int tmp2_len = tmp_len;
if (hashconfig->opts_type & OPTS_TYPE_ST_ADD80)
{
if (tmp2_len >= 256) return false;
tmp_buf[tmp2_len++] = 0x80;
}
if (hashconfig->opts_type & OPTS_TYPE_ST_ADD01)
{
if (tmp2_len >= 256) return false;
tmp_buf[tmp2_len++] = 0x01;
}
if (hashconfig->opts_type & OPTS_TYPE_ST_GENERATE_LE)
{
u32 max = tmp2_len / 4;
if (tmp2_len % 4) max++;
for (u32 i = 0; i < max; i++)
{
tmp_u32[i] = byte_swap_32 (tmp_u32[i]);
}
// Important: we may need to increase the length of memcpy since
// we don't want to "loose" some swapped bytes (could happen if
// they do not perfectly fit in the 4-byte blocks)
// Memcpy does always copy the bytes in the BE order, but since
// we swapped them, some important bytes could be in positions
// we normally skip with the original len
if (tmp2_len % 4) tmp2_len += 4 - (tmp2_len % 4);
}
memcpy (out_buf, tmp_buf, tmp2_len);
*out_len = tmp_len;
return true;
}