socks5 proxy

./my-socks5 -h
usage: ./my-socks5 [-u username] [-p password] [-P port] [-F] [-h]
       -u  username
       -p  password
       -P  default 1080
       -F  run in foreground
       -h  usage info

• currently only support TCP
• currently only support Username/Password AUTH
• currently it is Half Duplex

Build Firefox from source to support SOCKS5 Username/Password Authentication

• Chrome dose not support SOCKS5 authentication, @see https://bugs.chromium.org/p/chromium/issues/detail?id=256785

• Firefox dose support SOCKS5 authentication, but NO userinterface available, that's why we need BUILD FROM SOURCE.

• @see https://developer.mozilla.org/en-US/docs/Mozilla/Developer_guide/Build_Instructions/Simple_Firefox_build/Linux_and_MacOS_build_preparation

    sudo apt-get install autoconf2.13
  
    # Ubuntu 12.04
    # firefox need gcc-4.8
    sudo apt-get build-dep firefox
    cd /usr/bin/
    sudo rm g++ gcc
    sudo ln -s /usr/lib/gcc-mozilla/bin/gcc .
    sudo ln -s /usr/lib/gcc-mozilla/bin/g++ .
  
    apt-get source firefox
    cd firefox-50.1.0+build2
    ./mach bootstrap
    # Firefox for Desktop
  
    # edit toolkit/mozapps/update/tests/moz.build
    # remove 'data/complete.exe', 'data/partial.exe'
  
    ./mach build
    # it will take a long while
  
    # edit netwerk/socket/nsSOCKSIOLayer.cpp
    # line 281
    -
    mProxy->GetUsername(mProxyUsername);
    +
    char *my_socks5_username = getenv("MY_SOCKS5_USERNAME");
    if (my_socks5_username != NULL) {
        mProxyUsername = my_socks5_username;
    } else {
        mProxy->GetUsername(mProxyUsername);
    }
    # line 712
    -
    nsCString password;
    mProxy->GetPassword(password);
    +
    char *my_socks5_password = getenv("MY_SOCKS5_PASSWORD");
    if (my_socks5_password == NULL) {
        return PR_FAILURE;
    }
    nsCString password;
    password = my_socks5_password;
  
    ./mach build
    ./mach package
  
    cd obj-x86_64-pc-linux-gnu/dist/
    cp firefox-50.1.0.en-US.linux-x86_64.tar.bz2 ~/Downloads/
  

Run firefox

# select "Proxy DNS when using SOCKS v5"
# ssh -L 127.0.0.1:1080:127.0.0.1:1080 user@remote
env MY_SOCKS5_USERNAME=user MY_SOCKS5_PASSWORD=pass /home/heguangyu5/firefox/firefox