across/docker/mtproxy/entrypoint.sh

#!/bin/sh
if [ ! -z "$DEBUG" ]; then set -x; fi
mkdir /data 2>/dev/null >/dev/null
RANDOM=$(printf "%d" "0x$(head -c4 /dev/urandom | od -t x1 -An | tr -d ' ')")

if [ -z "$WORKERS" ]; then
    WORKERS=1
fi

SECRET_CMD=""
if [ ! -z "$SECRET" ]; then
    echo "[+] Using the explicitly passed secret: '$SECRET'."
elif [ -f /data/secret ]; then
    SECRET="$(cat /data/secret)"
    echo "[+] Using the secret in /data/secret: '$SECRET'."
else
    if [[ ! -z "$SECRET_COUNT" ]]; then
       if [[ "$SECRET_COUNT" -le 1 || "$SECRET_COUNT" -ge 16 ]]; then
            echo "[F] Can generate between 1 and 16 secrets."
            exit 5
       fi
    else
      SECRET_COUNT="1"
    fi

    echo "[+] No secret passed. Will generate $SECRET_COUNT random ones."
    SECRET="$(dd if=/dev/urandom bs=16 count=1 2>&1 | od -tx1  | head -n1 | tail -c +9 | tr -d ' ')"
    for pass in $(seq 2 $SECRET_COUNT); do
        SECRET="$SECRET,$(dd if=/dev/urandom bs=16 count=1 2>&1 | od -tx1  | head -n1 | tail -c +9 | tr -d ' ')"
    done
fi

if echo "$SECRET" | grep -qE '^[0-9a-fA-F]{32}(,[0-9a-fA-F]{32}){0,15}$'; then
    SECRET="$(echo "$SECRET" | tr '[:upper:]' '[:lower:]')"
    SECRET_CMD="-S $(echo "$SECRET" | sed 's/,/ -S /g')"
    echo -- "$SECRET_CMD" > /data/secret_cmd
    echo "$SECRET" > /data/secret
else
    echo '[F] Bad secret format: should be 32 hex chars (for 16 bytes) for every secret; secrets should be comma-separated.'
    exit 1
fi

if [ ! -z "$TAG" ]; then
    echo "[+] Using the explicitly passed tag: '$TAG'."
fi

TAG_CMD=""
if [[ ! -z "$TAG" ]]; then
    if echo "$TAG" | grep -qE '^[0-9a-fA-F]{32}$'; then
        TAG="$(echo "$TAG" | tr '[:upper:]' '[:lower:]')"
        TAG_CMD="-P $TAG"
    else
        echo '[!] Bad tag format: should be 32 hex chars (for 16 bytes).'
        echo '[!] Continuing.'
    fi
fi

REMOTE_CONFIG=/data/proxy-multi.conf
curl -s https://core.telegram.org/getProxyConfig -o ${REMOTE_CONFIG} || {
    echo '[F] Cannot download proxy configuration from Telegram servers.'
    exit 2
}

REMOTE_SECRET=/data/proxy-secret
curl -s https://core.telegram.org/getProxySecret -o ${REMOTE_SECRET} || {
    echo '[F] Cannot download proxy secret from Telegram servers.'
    exit 5
}

if [ ! -z "$EXTERNAL_IP" ]; then
    echo "[+] Using the explicitly passed external IP: ${EXTERNAL_IP}."
else
    EXTERNAL_IP="$(curl -s -4 "ipv4.icanhazip.com")"
    if [[ -z "$EXTERNAL_IP" ]]; then
        echo "[F] Cannot determine external IP address."
        exit 3
    else
        echo "[+] Using the detected external IP: ${EXTERNAL_IP}."
    fi
fi

if [ ! -z "$INTERNAL_IP" ]; then
    echo "[+] Using the explicitly passed internal IP: ${INTERNAL_IP}."
else
    INTERNAL_IP="$(ip -4 route get 8.8.8.8 | grep '^8\.8\.8\.8\s' | grep -Eo 'src\s+\d+\.\d+\.\d+\.\d+' | awk '{print $2}')"
    if [[ -z "$INTERNAL_IP" ]]; then
        echo "[F] Cannot determine internal IP address."
        exit 4
    else
        echo "[+] Using the detected internal IP: ${INTERNAL_IP}."
    fi
fi

echo "[*] Final configuration:"
I=1
echo "$SECRET" | tr ',' '\n' | while read S; do
    echo "[*]   Secret $I: $S"
    echo "[*]   tg:// link for secret $I auto configuration: tg://proxy?server=${EXTERNAL_IP}&port=443&secret=${S}"
    echo "[*]   t.me link for secret $I: https://t.me/proxy?server=${EXTERNAL_IP}&port=443&secret=${S}"
    I=$(($I+1))
done

[ ! -z "$TAG" ] && echo "[*]   Tag: $TAG" || echo "[*]   Tag: no tag"
echo "[*]   External IP: ${EXTERNAL_IP}"
echo "[*]   Make sure to fix the links in case you run the proxy on a different port."
echo
echo '[+] Starting proxy...'
sleep 1

# start mtproto-proxy
exec mtproto-proxy "$@" --aes-pwd ${REMOTE_SECRET} --user root ${REMOTE_CONFIG} --nat-info "$INTERNAL_IP:$EXTERNAL_IP" ${SECRET_CMD} ${TAG_CMD}