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fix(SessionIdManager): take a correct algorithm when decoding a token

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This commit is contained in:
Tomasz Sowa
2022-07-26 21:09:44 +02:00
parent 2e8f4d1a26
commit c85a724fec
3 changed files with 29 additions and 10 deletions
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35
winixd/core/sessionidmanager.cpp
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@@ -548,17 +548,14 @@ return true;
}
bool SessionIdManager::DecodeTokenA(size_t & id, unsigned int & index)
bool SessionIdManager::DecodeToken(size_t key, size_t & id, unsigned int & index)
{
size_t pad_top_size;
size_t pad_bottom_size;
char pad_top_value;
char pad_bottom_value;
const char * str = string_token.c_str() + 1;
size_t key = (unsigned char)(*str);
str += 1;
const char * str = string_token.c_str() + 2;
if( !DecodeAES(str, key) )
return false;
@@ -592,6 +589,29 @@ return CheckControlSums(str);
}
bool SessionIdManager::DecodeToken(size_t & id, unsigned int & index)
{
size_t key = 0;
if( string_token[0] == 'a' )
{
// it is ALGORITHM_MULTIPLE_KEYS
key = (unsigned char)string_token[1];
}
else
if( string_token[0] == 'b' )
{
// it is ALGORITHM_SINGLE_KEYS
key = 0;
}
else
{
return false;
}
return DecodeToken(key, id, index);
}
bool SessionIdManager::DecodeToken(const std::wstring & token, size_t & id, unsigned int & index)
{
@@ -606,10 +626,7 @@ bool SessionIdManager::DecodeToken(const std::wstring & token, size_t & id, unsi
if( string_token.size() != 34 )
return false;
if( string_token[0] == 'a' )
return DecodeTokenA(id, index);
return false;
return DecodeToken(id, index);
}

3
winixd/core/sessionidmanager.h
View File

@@ -171,7 +171,8 @@ private:
void CopyString(const std::string & in, std::wstring & out);
void CopyString(const std::wstring & in, std::string & out);
bool Encode(std::string & str);
bool DecodeTokenA(size_t & id, unsigned int & index);
bool DecodeToken(size_t key, size_t & id, unsigned int & index);
bool DecodeToken(size_t & id, unsigned int & index);
bool IsPaddingCorrect(const char * str, size_t len, char val);
bool CheckControlSums(const char * str);
void InitializeAesKeys(size_t index);