From 57178ffdb66447f1eda9a3bc1ae70f17ddca99a5 Mon Sep 17 00:00:00 2001
From: DomySh <me@domysh.com>
Date: Wed, 22 Jun 2022 01:44:25 +0200
Subject: [PATCH] Fixed null byte match

---
 Dockerfile.fullcompile  | 2 +-
 backend/proxy/proxy.cpp | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/Dockerfile.fullcompile b/Dockerfile.fullcompile
index 5f5f151..fd467ea 100755
--- a/Dockerfile.fullcompile
+++ b/Dockerfile.fullcompile
@@ -27,7 +27,7 @@ ADD ./backend/requirements.txt /execute/requirements.txt
 RUN pip install --no-cache-dir -r /execute/requirements.txt
 
 COPY ./backend/ /execute/
-RUN c++ -O3 -o proxy/proxy proxy/proxy.cpp -pthread -lboost_system -lboost_regex
+RUN c++ -O3 -o proxy/proxy proxy/proxy.cpp -pthread -lboost_system 
 COPY ./config/supervisord.conf /etc/supervisor/supervisord.conf
 COPY ./config/nginx.conf /tmp/nginx.conf
 COPY ./config/start_nginx.sh /tmp/start_nginx.sh
diff --git a/backend/proxy/proxy.cpp b/backend/proxy/proxy.cpp
index 8b19c9f..367c6e4 100644
--- a/backend/proxy/proxy.cpp
+++ b/backend/proxy/proxy.cpp
@@ -53,7 +53,7 @@ bool filter_data(unsigned char* data, const size_t& bytes_transferred, vector<pa
    for (pair<string,regex> ele:blacklist){
       cmatch what;
       try{
-         regex_search(reinterpret_cast<const char*>(data), what, ele.second);
+         regex_search(reinterpret_cast<const char*>(data), reinterpret_cast<const char*>(data)+bytes_transferred, what, ele.second);
          if(what.size() > 0){
             cout << "BLOCKED " << ele.first << endl;
             return false;
@@ -65,7 +65,7 @@ bool filter_data(unsigned char* data, const size_t& bytes_transferred, vector<pa
    for (pair<string,regex> ele:whitelist){
       cmatch what;
       try{
-         regex_search(reinterpret_cast<const char*>(data), what, ele.second);
+         regex_search(reinterpret_cast<const char*>(data),reinterpret_cast<const char*>(data)+bytes_transferred, what, ele.second);
          if(what.size() < 0){
             cout << "BLOCKED " << ele.first << endl;
             return false;