Modern Trojan

Trojan written in modern C++(>=20).

Usage

trojan -l <addr> -p <port> -k <password> -a <cert> -b <key>

OPTIONS:
    -d              daemonize
    -n <nofile>     set nofile limit

Build

Requirements

• gcc >= 11 / clang >= 13

• openssl 1.1.1

• cmake >= 3.19

• asio >= 1.22

• fmt

• range-v3

Options

• TROJAN_USE_UDP (OFF): enable udp support
• STATIC_STD (ON): static-link libgcc/libstdc++
• STATIC_BIN (OFF): static-link all libraries if possible

Steps

Clone this repository:

git clone https://github.com/zephyrchien/modern-trojan

cd modern-trojan

Install dependencies with vcpkg:

git clone https://github.com/microsoft/vcpkg
vcpkg/bootstrap-vcpkg.sh
vcpkg/vcpkg integrate install
vcpkg/vcpkg install asio
vcpkg/vcpkg install fmt
vcpkg/vcpkg install range-v3

Generate makefile and build:

mkdir build && cd build

cmake ..

make -j

Strip symbols:

strip trojan

*Note: libgcc/libstdc++ are statically-linked. To have them dynamically-linked you can add -DSTATIC_STD=OFF when generating the makefile.

Build-static

To build a pure statically linked binary, we need to link trojan against musl-libc, instead of glibc. And we also need to build openssl as a static library (libssl.a, libcrypto.a).

We can have these things done smoothly with the help of docker containers. See docker/static.Dockerfile.

Setup build environment:

docker build . -t build-static -f static.Dockerfile

Enter docker container(share this folder):

docker run -it -v "${PWD}":"/trojan" build-static /bin/sh

Generate makefile and build:

mkdir build-musl && cd build-musl

cmake -DSTATIC_BIN=ON ..

make -j

Strip symbols:

strip trojan

Or combine these commands in one line:

docker run --rm -it -v "${PWD}":"/trojan" \
    build-static \
    sh -c "cd trojan && mkdir build-musl && cd build-musl \
    && cmake -DSTATIC_BIN .. \
    && make -j \
    && strip trojan"