ScriptAuth plugin for 3PROXY.

This plugin allows to validate (proxy) client's username and password using script file.

Now, the script (scriptauth.c) enforces username/password and IP logic dynamically.

Clone or download ScriptAuth plugin to /<3proxy source files>/src/plugins directory.

Edit Makefile.Linux file and add ScriptAuth to your plugins list, like in example below:

PLUGINS = StringsPlugin TrafficPlugin PCREPlugin TransparentPlugin ScriptAuth

Compile 3PROXY:

make -f Makefile.Linux

In your 3proxy.cfg file include scriptauth.ld.so library/plugin, like in example bellow:

plugin "/<path to>/scriptauth.ld.so" start "<script>"

Plugin settings:

• start - run plugin
• script - Path to you script file in order to execute. Ex. /etc/3proxy/scripts/auth.php

After that, in your 3proxy.cfg file you will be able to use ScriptAuth plugin in order to authenticate users:

...
authcache user,password 60
auth cache strong script
allow *
...

proxy -p3128

An example in PHP (using curl to request your API) you can found in scripts/auth.php file.

Issue: error: ld returned 1 exit status...

...
make[2]: Entering directory `/root/3proxy/src/plugins/ScriptAuth'
gcc -o ../../scriptauth.ld.so -O2 -fno-strict-aliasing -pthread -shared -lpam scriptauth.o
/usr/bin/ld: cannot find -lpam
collect2: error: ld returned 1 exit status
make[2]: *** [scriptauth.ld.so] Error 1
make[2]: Leaving directory `/root/3proxy/src/plugins/ScriptAuth'
...

Solution:

Install libpam modules:

sudo apt-get install libpam0g-dev