sikkienl/dash
1
0
Fork 0
mirror of https://github.com/dashpay/dash.git synced 2024-12-26 12:32:48 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity

Merge pull request #4373

Browse Source 
2ec5a3d rpc: Prevent easy memory exhaustion attack (Wladimir J. van der Laan)
This commit is contained in:
Wladimir J. van der Laan 2014-07-07 10:29:44 +02:00
commit ebb37a417a
No known key found for this signature in database
GPG Key ID: 74810B012346C9A6
1 changed files with 14 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
src/rpcprotocol.cpp
View File

@ -25,6 +25,9 @@ using namespace boost;
using namespace boost::asio;
using namespace json_spirit;
// Number of bytes to allocate and read at most at once in post data
const size_t POST_READ_SIZE = 256 * 1024;
//
// HTTP protocol
//
@ -204,8 +207,17 @@ int ReadHTTPMessage(std::basic_istream<char>& stream, map<string,
// Read message
if (nLen > 0)
{
vector<char> vch(nLen);
stream.read(&vch[0], nLen);
vector<char> vch;
size_t ptr = 0;
while (ptr < (size_t)nLen)
{
size_t bytes_to_read = std::min((size_t)nLen - ptr, POST_READ_SIZE);
vch.resize(ptr + bytes_to_read);
stream.read(&vch[ptr], bytes_to_read);
if (!stream) // Connection lost while reading
return HTTP_INTERNAL_SERVER_ERROR;
ptr += bytes_to_read;
}
strMessageRet = string(vch.begin(), vch.end());
}