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author | midipix <writeonce@midipix.org> | 2015-07-27 04:01:18 -0400 |
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committer | midipix <writeonce@midipix.org> | 2015-07-27 04:01:18 -0400 |
commit | dd89bb8ad4fe184a34b5dbdda237e640fc82121b (patch) | |
tree | 5e80d2da35f5892f92be29f57982b2708e6bd99b /src/string/ntapi_tt_hex_utf16_to_uintptr.c | |
parent | dcdadc2702712fa750ed255ed1dfa354522797a0 (diff) | |
download | ntapi-dd89bb8ad4fe184a34b5dbdda237e640fc82121b.tar.bz2 ntapi-dd89bb8ad4fe184a34b5dbdda237e640fc82121b.tar.xz |
entered advanced internal development stage.
Diffstat (limited to 'src/string/ntapi_tt_hex_utf16_to_uintptr.c')
-rw-r--r-- | src/string/ntapi_tt_hex_utf16_to_uintptr.c | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/src/string/ntapi_tt_hex_utf16_to_uintptr.c b/src/string/ntapi_tt_hex_utf16_to_uintptr.c new file mode 100644 index 0000000..3b1f354 --- /dev/null +++ b/src/string/ntapi_tt_hex_utf16_to_uintptr.c @@ -0,0 +1,124 @@ +/********************************************************/ +/* ntapi: Native API core library */ +/* Copyright (C) 2013,2014,2015 Z. Gilboa */ +/* Released under GPLv2 and GPLv3; see COPYING.NTAPI. */ +/********************************************************/ + +#include <psxtypes/psxtypes.h> +#include <ntapi/nt_status.h> + +int32_t __fastcall __ntapi_tt_hex_utf16_to_uint32( + __in wchar16_t hex_key_utf16[8], + __out uint32_t * key) +{ + int i; + unsigned char uch[8]; + unsigned char ubytes[4]; + uint32_t * key_ret; + + /* input validation */ + i = 0; + do { + if (/* [a-f],[[A-F],[0-9] */ + ((hex_key_utf16[i] >= 'a') && (hex_key_utf16[i] <= 'f')) + || ((hex_key_utf16[i] >= 'A') && (hex_key_utf16[i] <= 'F')) + || ((hex_key_utf16[i] >= '0') && (hex_key_utf16[i] <= '9'))) + /* valid hex character */ + i++; + else + return NT_STATUS_ILLEGAL_CHARACTER; + } while (i < 8); + + /* intermediate step: little endian byte order */ + uch[0] = (unsigned char)hex_key_utf16[6]; + uch[1] = (unsigned char)hex_key_utf16[7]; + uch[2] = (unsigned char)hex_key_utf16[4]; + uch[3] = (unsigned char)hex_key_utf16[5]; + uch[4] = (unsigned char)hex_key_utf16[2]; + uch[5] = (unsigned char)hex_key_utf16[3]; + uch[6] = (unsigned char)hex_key_utf16[0]; + uch[7] = (unsigned char)hex_key_utf16[1]; + + for (i=0; i<8; i++) { + /* 'a' > 'A' > '0' */ + if (uch[i] >= 'a') + uch[i] -= ('a' - 0x0a); + else if (uch[i] >= 'A') + uch[i] -= ('A' - 0x0a); + else + uch[i] -= '0'; + } + + ubytes[0] = uch[0] * 0x10 + uch[1]; + ubytes[1] = uch[2] * 0x10 + uch[3]; + ubytes[2] = uch[4] * 0x10 + uch[5]; + ubytes[3] = uch[6] * 0x10 + uch[7]; + + key_ret = (uint32_t *)ubytes; + *key = *key_ret; + + return NT_STATUS_SUCCESS; +} + + +int32_t __fastcall __ntapi_tt_hex_utf16_to_uint64( + __in wchar16_t hex_key_utf16[16], + __out uint64_t * key) +{ + int32_t status; + uint32_t x64_key[2]; + uint64_t * key_ret; + + status = __ntapi_tt_hex_utf16_to_uint32( + &hex_key_utf16[0], + &x64_key[1]); + + if (status != NT_STATUS_SUCCESS) + return status; + + status = __ntapi_tt_hex_utf16_to_uint32( + &hex_key_utf16[8], + &x64_key[0]); + + if (status != NT_STATUS_SUCCESS) + return status; + + key_ret = (uint64_t *)x64_key; + *key = *key_ret; + + return NT_STATUS_SUCCESS; +} + + +int32_t __fastcall __ntapi_tt_hex_utf16_to_uintptr( + __in wchar16_t hex_key_utf16[], + __out uintptr_t * key) +{ + #if defined (__NT32) + return __ntapi_tt_hex_utf16_to_uint32(hex_key_utf16,key); + #elif defined (__NT64) + return __ntapi_tt_hex_utf16_to_uint64(hex_key_utf16,key); + #endif +} + + +int32_t __fastcall __ntapi_tt_hex_utf16_to_uint16( + __in wchar16_t hex_key_utf16[4], + __out uint16_t * key) +{ + int32_t ret; + uint32_t dword_key; + wchar16_t hex_buf[8] = {'0','0','0','0'}; + + hex_buf[4] = hex_key_utf16[0]; + hex_buf[5] = hex_key_utf16[1]; + hex_buf[6] = hex_key_utf16[2]; + hex_buf[7] = hex_key_utf16[3]; + + ret = __ntapi_tt_hex_utf16_to_uint32(hex_buf,&dword_key); + + if (ret == NT_STATUS_SUCCESS) + *key = (uint16_t)dword_key; + + return ret; +} |