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Revert "aes comment decryption stuffs"

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This reverts commit d2e31a87f4.
This commit is contained in:
Hazim Gazov
2010-08-01 07:02:43 +00:00
parent d2e31a87f4
commit eaa739af0f
2 changed files with 54 additions and 96 deletions
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3
indra/llimage/CMakeLists.txt
View File

@@ -19,7 +19,6 @@ include_directories(
) )
set(llimage_SOURCE_FILES set(llimage_SOURCE_FILES
aes.cpp
llimagebmp.cpp llimagebmp.cpp
llimage.cpp llimage.cpp
llimagedxt.cpp llimagedxt.cpp
@@ -34,7 +33,7 @@ set(llimage_SOURCE_FILES
set(llimage_HEADER_FILES set(llimage_HEADER_FILES
CMakeLists.txt CMakeLists.txt
aes.h
llimage.h llimage.h
llimagebmp.h llimagebmp.h
llimagedxt.h llimagedxt.h

147
indra/llimage/llimagemetadatareader.cpp
View File

@@ -1,12 +1,7 @@
// <edit> // <edit>
#include "linden_common.h" #include "linden_common.h"
#include "llimagemetadatareader.h" #include "llimagemetadatareader.h"
#include "aes.h" //#define COMMENT_DEBUGGING
#include "llerror.h"
const unsigned long EMKDU_AES_KEY[] = {0x7810001, 0x0FEB67863, 0x12B03F6E, 0x0C16665CC, 0x0C1AC9681, 0x0F70B663B};
//const unsigned char EMKDU_AES_KEY[] = {0x01,0x00,0x81,0x07,0x63,0x78,0xB6,0xFE,0x6E,0x3F,0xB0,0x12,0xCC,0x65,0x66,0xC1,
//0x81,0x96,0xAC,0xC1,0x3B,0x66,0x0B,0xF7};
//#define COMMENT_DEBUGG1ING
LLJ2cParser::LLJ2cParser(U8* data,int data_size) LLJ2cParser::LLJ2cParser(U8* data,int data_size)
{ {
if(data && data_size) if(data && data_size)
@@ -54,20 +49,20 @@ std::vector<U8> LLJ2cParser::GetNextComment()
U8 marker_type = nextChar(); U8 marker_type = nextChar();
if (marker_type == 0x4f) if (marker_type == 0x4f)
{ {
continue; continue;
} }
if (marker_type == 0x90) if (marker_type == 0x90)
{ {
//llinfos << "FOUND 0x90" << llendl; //llinfos << "FOUND 0x90" << llendl;
break; //return empty vector break; //return empty vector
} }
if (marker_type == 0x64) if (marker_type == 0x64)
{ {
//llinfos << "FOUND 0x64 COMMENT SECTION" << llendl; //llinfos << "FOUND 0x64 COMMENT SECTION" << llendl;
S32 len = ((S32)nextChar())*256 + (S32)nextChar(); S32 len = ((S32)nextChar())*256 + (S32)nextChar();
if (len > 3) content = nextCharArray(len - 2); if (len > 3) content = nextCharArray(len - 2);
return content; return content;
} }
} }
} }
@@ -79,95 +74,59 @@ std::vector<U8> LLJ2cParser::GetNextComment()
std::string LLImageMetaDataReader::ExtractEncodedComment(U8* data,int data_size) std::string LLImageMetaDataReader::ExtractEncodedComment(U8* data,int data_size)
{ {
LLJ2cParser parser = LLJ2cParser(data,data_size); LLJ2cParser parser = LLJ2cParser(data,data_size);
std::string result;
while(1) while(1)
{ {
std::vector<U8> comment = parser.GetNextComment(); std::vector<U8> comment = parser.GetNextComment();
if (comment.empty()) break; //exit loop if (comment.empty()) break; //exit loop
#ifndef COMMENT_DEBUGGING
if (comment[1] == 0x00 && comment.size() == 130) if (comment[1] == 0x00 && comment.size() == 130)
{ {
bool xorComment = true; //llinfos << "FOUND PAYLOAD" << llendl;
//llinfos << "FOUND PAYLOAD" << llendl; std::vector<U8> payload(128);
std::vector<U8> payload(128); S32 i;
S32 i; memcpy(&(payload[0]), &(comment[2]), 128);
memcpy(&(payload[0]), &(comment[2]), 128); //std::copy(comment.begin()+2,comment.end(),payload.begin());
//std::copy(comment.begin()+2,comment.end(),payload.begin()); if (payload[2] == payload[127])
//lets check XOR Cipher first {
if (payload[2] == payload[127]) // emkdu.dll
{ for (i = 4; i < 128; i += 4)
// emkdu.dll {
for (i = 4; i < 128; i += 4) payload[i] ^= payload[3];
{ payload[i + 1] ^= payload[1];
payload[i] ^= payload[3]; payload[i + 2] ^= payload[0];
payload[i + 1] ^= payload[1]; payload[i + 3] ^= payload[2];
payload[i + 2] ^= payload[0]; }
payload[i + 3] ^= payload[2]; }
} else if (payload[3] == payload[127])
} {
else if (payload[3] == payload[127]) // emkdu.dll or onyxkdu.dll
{ for (i = 4; i < 128; i += 4)
// emkdu.dll or onyxkdu.dll {
for (i = 4; i < 128; i += 4) payload[i] ^= payload[2];
{ payload[i + 1] ^= payload[0];
payload[i] ^= payload[2]; payload[i + 2] ^= payload[1];
payload[i + 1] ^= payload[0]; payload[i + 3] ^= payload[3];
payload[i + 2] ^= payload[1]; }
payload[i + 3] ^= payload[3]; }
} else
} {
else break;//exit loop
{ }
xorComment = false; for (i = 4; i < 128; ++i)
} {
if(!xorComment) if (payload[i] == 0) break;
{ }
//this is terrible i know if(i < 4) break;
std::vector<U8> dataout(128); std::string result(payload.begin()+4,payload.begin()+i);
CRijndael aes; //llinfos << "FOUND COMMENT: " << result << llendl;
try return result;
{
aes.MakeKey(reinterpret_cast<const char*>(EMKDU_AES_KEY),"", 24, 16);
} catch(std::string error)
{
llinfos << error << llendl;
}
try
{
aes.Decrypt((char*)&(payload[0]), (char*)&(dataout[0]), 16, CRijndael::ECB);
} catch(std::string error)
{
llinfos << error << llendl;
}
//payload.clear();
//memcpy(&(payload[0]),&(dataout[0]),dataout.size());
for (i = 0 ; i < 128; ++i)
{
if (dataout[i] == '\0') break;
}
if(i == 0) continue;
if(result.length() > 0)
result.append(" ");
result = "(AES) ";
result.append(dataout.begin(),dataout.begin()+i);
}
else
{
for (i = 4 ; i < 128; ++i)
{
if (payload[i] == 0) break;
}
if(i < 4) continue;
if(result.length() > 0)
result.append(" ");
result = "(XOR) ";
result.append(payload.begin()+4,payload.begin()+i);
}
//llinfos << "FOUND COMMENT: " << result << llendl;
} }
#else
std::string result(comment.begin(),comment.end());
return result;
#endif
} }
//end of loop //end of loop
return result; return "";
} }
// </edit> // </edit>