compile

#!/usr/bin/env bash

indent() {
    sed -u 's/^/      /'
}

BUILD_DIR=$1
CACHE_DIR=$2
ENV_DIR=$3

if [[ -e "${ENV_DIR}/TOR_SRC_URL" ]]; then
    TOR_SRC_URL=$(cat ${ENV_DIR}/TOR_SRC_URL)
fi

if [[ -z "${TOR_SRC_URL}" ]]; then
    TOR_SRC_URL="https://www.torproject.org/dist/tor-0.2.7.6.tar.gz"
fi

wget -q $TOR_SRC_URL

if ! [ $? ]; then
    echo "FAILED to obtain tor src" | indent
    exit 1
fi

## TODO: Need to figure out how to verify properly.
# TOR_SRC_SIG=${TOR_SRC_URL}.asc
# wget -q $TOR_SRC_SIG
# if ! [ $? ]; then
#     echo "FAILED to obtain tor src signature file" | indent
#     exit 1
# fi

# # Receive the Tor signers key
# gpg --keyserver x-hkp://pool.sks-keyservers.net --recv-keys 0x4E2C6E8793298290
# if ! [ $? ]; then
#     echo "FAILED to recv key for signature verification" | indent
#     exit 1
# fi

# gpg --verify $BUILD_DIR/tor-*.tar.gz{.asc,} | grep "Good signature"
# if ! [ $? ]; then
#     echo "FAILED to verify integrity of downloaded tarball. Aborting!!!!" | indent
#     exit 1
# fi

# Finally do some compilation.
tar -zxf tor-*.tar.gz
cd tor-*
./configure --prefix=$BUILD_DIR
if ! [ $? ]; then
    echo "FAILED to configure for compliation" | indent
    exit 1
fi

make install
if ! [ $? ]; then
    echo "FAILED to run make install" | indent
fi

# Cache builds to avoid unnecessary wait times.
echo $TOR_SRC_URL > $CACHE_DIR/.src-dist

cat > ${BUILD_DIR}/bin/hide <<EOF
#!/usr/bin/env bash

mkdir -p "${HOME}/hidden_service"

echo "Setting up hidden service"
cat > ${HOME}/hidden_service/private_key <<EPK
\${HIDDEN_PRIVATE_KEY}
EPK
echo \${HIDDEN_DOT_ONION} > ${HOME}/hidden_service/hostname

echo "HiddenServiceDir ${HOME}/hidden_service/" > $HOME/etc/tor/torrc
echo "HiddenServicePort 80 127.0.0.1:\${PORT}" >> $HOME/etc/tor/torrc

# Use -f to be safe here.
$HOME/bin/tor -f $HOME/etc/tor/torrc &
exec \$*
EOF

chmod a+x ${BUILD_DIR}/bin/hide

echo "Installed Tor successfully" | indent