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added missing calls to EVP_CIPHER_CTX_cleanup() to release memory after decryption, causing memory leaks

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This commit is contained in:
csoler 2016-04-21 19:41:21 -04:00
parent 3fae108cb1
commit 0c711a4c61
1 changed files with 16 additions and 5 deletions
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21
libretroshare/src/gxs/gxssecurity.cc
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@ -509,7 +509,7 @@ bool GxsSecurity::encrypt(uint8_t *& out, uint32_t &outlen, const uint8_t *in, u
// move to end
out_offset += out_currOffset;
// make sure offset has not gone passed valid memory bounds
if(out_offset > max_outlen)
{
@ -521,6 +521,8 @@ bool GxsSecurity::encrypt(uint8_t *& out, uint32_t &outlen, const uint8_t *in, u
// free encrypted key data
free(ek);
EVP_CIPHER_CTX_cleanup(&ctx);
outlen = out_offset;
return true;
}
@ -538,6 +540,8 @@ bool GxsSecurity::encrypt(uint8_t *& out, uint32_t &outlen, const uint8_t *in, u
//
out = NULL ;
EVP_CIPHER_CTX ctx;
EVP_CIPHER_CTX_init(&ctx);
try
{
@ -561,9 +565,7 @@ bool GxsSecurity::encrypt(uint8_t *& out, uint32_t &outlen, const uint8_t *in, u
}
}
EVP_CIPHER_CTX ctx;
unsigned char iv[EVP_MAX_IV_LENGTH];
EVP_CIPHER_CTX_init(&ctx);
std::vector<unsigned char *> ek(keys.size(),NULL) ;
std::vector<int> eklen(keys.size(),0) ;
@ -653,12 +655,16 @@ bool GxsSecurity::encrypt(uint8_t *& out, uint32_t &outlen, const uint8_t *in, u
if(ek[i]) free(ek[i]);
outlen = out_offset;
EVP_CIPHER_CTX_cleanup(&ctx);
return true;
}
catch(std::exception& e)
{
std::cerr << "(EE) Exception caught while encrypting: " << e.what() << std::endl;
EVP_CIPHER_CTX_cleanup(&ctx);
if(out) free(out) ;
out = NULL ;
@ -767,6 +773,7 @@ bool GxsSecurity::decrypt(uint8_t *& out, uint32_t & outlen, const uint8_t *in,
outlen += out_currOffset;
free(ek);
EVP_CIPHER_CTX_cleanup(&ctx);
return true;
}
@ -783,9 +790,13 @@ bool GxsSecurity::decrypt(uint8_t *& out, uint32_t & outlen, const uint8_t *in,
#ifdef DISTRIB_DEBUG
std::cerr << "GxsSecurity::decrypt() " << std::endl;
#endif
EVP_CIPHER_CTX ctx;
EVP_CIPHER_CTX_init(&ctx);
try
{
out = NULL ;
// check that the input block has a valid format.
uint32_t offset = 0 ;
@ -826,8 +837,6 @@ bool GxsSecurity::decrypt(uint8_t *& out, uint32_t & outlen, const uint8_t *in,
// decrypt
EVP_CIPHER_CTX ctx;
EVP_CIPHER_CTX_init(&ctx);
bool succeed = false;
for(uint32_t j=0;j<keys.size() && !succeed;++j)
@ -890,6 +899,7 @@ bool GxsSecurity::decrypt(uint8_t *& out, uint32_t & outlen, const uint8_t *in,
#ifdef GXS_SECURITY_DEBUG
std::cerr << " successfully decrypted block of size " << outlen << std::endl;
#endif
EVP_CIPHER_CTX_cleanup(&ctx);
return true;
}
catch(std::exception& e)
@ -905,6 +915,7 @@ bool GxsSecurity::decrypt(uint8_t *& out, uint32_t & outlen, const uint8_t *in,
out = NULL ;
}
EVP_CIPHER_CTX_cleanup(&ctx);
return false;
}
}