feat: PASSWORD_HASH helpers (#1180)

* feat: generate PASSWORD_HASH on the fly

* remove PASSWORD environment variable in favor of PASSWORD_HASH
* enhance password validity check server function
* update Dockerfile to include building a binary for generating hashed password
* update README with comprehensive Docker usage instructions hash generation

* fix: try fix git action docker build

* Dockerfile: use alpine-base image and install required build packages

* rewrite in js

* move files

* fix: lint errors

* some corrections

---------

Co-authored-by: Philip H <47042125+pheiduck@users.noreply.github.com>

Dockerfile

@@ -26,6 +26,10 @@ COPY --from=build_node_modules /app /app
 # than what runs inside of docker.
 COPY --from=build_node_modules /node_modules /node_modules
 
+# Copy the needed wg-password scripts
+COPY --from=build_node_modules /app/wgpw.sh /bin/wgpw
+RUN chmod +x /bin/wgpw
+
 # Install Linux packages
 RUN apk add --no-cache \
     dpkg \
@@ -42,4 +46,4 @@ ENV DEBUG=Server,WireGuard
 
 # Run Web UI
 WORKDIR /app
-CMD ["/usr/bin/dumb-init", "node", "server.js"]
+CMD ["/usr/bin/dumb-init", "node", "server.js"]

How_to_generate_an_bcrypt_hash.md

@@ -1,110 +1,34 @@
-<!-- created by Mathys Lopinto (@mathys-lopinto) -->
-# How to generate bcrypt hash
+# wg-password
 
-## Prerequisites
-- Python 3
-- bcrypt library
+`wg-password` (wgpg) is a script that generates bcrypt password hashes for use with `wg-easy`, enhancing security by requiring passwords.
 
-## Prerequisites Installation
-### Windows
-Download and install Python 3 from [official website](https://www.python.org/downloads/).
-Check "Add python.exe to PATH" before running "Install Now".
+## Features
+
+- Generate bcrypt password hashes.
+- Easily integrate with `wg-easy` to enforce password requirements.
+
+## Usage with Docker
+
+To generate a bcrypt password hash using Docker, run the following command:
+
+```sh
+docker run ghcr.io/wg-easy/wg-easy wgpw YOUR_PASSWORD
+PASSWORD_HASH='$2b$12$coPqCsPtcFO.Ab99xylBNOW4.Iu7OOA2/ZIboHN6/oyxca3MWo7fW' // litteraly YOUR_PASSWORD
+```
+
+## Important
+
+Make sure to enclose your password in single quotes when you run a linux host.
 
-Open Command Prompt (win + r, type "cmd" and press enter) and run the following command to install bcrypt library:
 ```bash
-pip install bcrypt
+$ echo $2b$12$coPqCsPtcF
+b2
+$ echo "$2b$12$coPqCsPtcF"
+b2
+$ echo '$2b$12$coPqCsPtcF'
+$2b$12$coPqCsPtcF
 ```
 
-### Debian based distributions
-```bash
-sudo apt-get update
-sudo apt-get install python3 python3-pip
-# If you use have install python using apt
-sudo apt-get install python3-bcrypt
-# If don't install python using apt
-pip3 install bcrypt
-# If you got externally-managed-environment error
-pip3 install bcrypt --break-system-packages
-```
+## LICENSE
 
-### Fedora based distributions
-```bash
-sudo dnf update
-sudo dnf install python3 python3-pip
-# If you use have install python using dnf
-sudo dnf install python3-bcrypt
-# If don't install python using dnf
-pip3 install bcrypt
-# If you got externally-managed-environment error
-pip3 install bcrypt --break-system-packages
-```
-
-### Arch Linux based distributions
-```bash
-sudo pacman -Syy
-sudo pacman -S python python-pip
-# If you use have install python using pacman
-sudo pacman -S python-bcrypt
-# If don't install python using pacman
-pip3 install bcrypt
-# If you got externally-managed-environment error
-pip3 install bcrypt --break-system-packages
-```
-
-### macOS
-```bash
-brew install bcrypt
-# If don't install bcrypt using homebrew
-pip3 install bcrypt
-# If you got externally-managed-environment error
-pip3 install bcrypt --break-system-packages
-```
-
-## Generating bcrypt hash from the command line
-You can use the following one-liner command to generate a bcrypt hash directly in the cmd/ terminal: 
-```bash
-python3 -c "import bcrypt; password = b'your_password_here'; assert len(password) < 72, 'Password must be less than 72 bytes due to bcrypt limitation'; hashed = bcrypt.hashpw(password, bcrypt.gensalt()); print(f'The hashed password is: {hashed.decode()}'); docker_interpolation = hashed.decode().replace('$', '$'*2); print(f'The hashed password for a Docker env is: {docker_interpolation}')" # or python if you run this on Windows. CHANGE your_password_here BY YOUR PASSWORD
-```
-Please change ``your_password_here`` in the line by your own password.
-
-## Generating bcrypt hash from an script file
-### Do not name the file `bcrypt.py` as it will cause an error.
-Create a python file with the following content:
-```python
-import bcrypt
-
-# Initial password
-password = b"your_password_here"  # DO NOT REMOVE THE b
-
-# Assert that the password is under 72 bytes
-assert len(password) < 72, "Password must be less than 72 bytes due to bcrypt limitation"
-
-# Generate a salt and hash the password
-hashed = bcrypt.hashpw(password, bcrypt.gensalt())
-
-# Print the hashed password
-print(f'The hashed password is: {hashed.decode()}')
-
-# Prepare the hashed password for Docker environment variables
-docker_interpolation = hashed.decode().replace("$", "$$")
-print(f'The hashed password for a Docker env is: {docker_interpolation}')
-```
-
-Replace `your_password_here` with the password you want to hash.
-
-Run the python file and you will get the hashed password.
-
-## Get the right hash
-Copy the 2nd line of the output (after the : ) and use it as your hashed password.
-
-__Exemple__
-If the output is:
-```txt
-The hashed password is: $2b$12$NRiL4Kw4dKid.ix2WvZltOmaQBZjoX30shjHJXRVdEGshAxYWXXMe
-The hashed password for an docker env is: $$2b$$12$$NRiL4Kw4dKid.ix2WvZltOmaQBZjoX30shjHJXRVdEGshAxYWXXMe
-``` 
-
-The docker line ``PASSWORD_HASH`` will be:
-```txt
-PASSWORD_HASH=$$2b$$12$$NRiL4Kw4dKid.ix2WvZltOmaQBZjoX30shjHJXRVdEGshAxYWXXMe
-```
+[wg-easy license](./LICENSE)

README.md

@@ -80,7 +80,7 @@ To automatically install & run wg-easy, simply run:
 
 > 💡 Replace `YOUR_SERVER_IP` with your WAN IP, or a Dynamic DNS hostname.
 >
-> 💡 Replace `YOUR_ADMIN_PASSWORD_HASH` with a bcrypt password hash to log in on the Web UI. See How_to_generate_an_bcrypt_hash.md for know how generate the hash.
+> 💡 Replace `YOUR_ADMIN_PASSWORD_HASH` with a bcrypt password hash to log in on the Web UI. See [How_to_generate_an_bcrypt_hash.md](./How_to_generate_an_bcrypt_hash.md) for know how generate the hash.
 
 The Web UI will now be available on `http://0.0.0.0:51821`.
 

src/config.js

@@ -5,7 +5,6 @@ const { release } = require('./package.json');
 module.exports.RELEASE = release;
 module.exports.PORT = process.env.PORT || '51821';
 module.exports.WEBUI_HOST = process.env.WEBUI_HOST || '0.0.0.0';
-module.exports.PASSWORD = process.env.PASSWORD;
 module.exports.PASSWORD_HASH = process.env.PASSWORD_HASH;
 module.exports.WG_PATH = process.env.WG_PATH || '/etc/wireguard/';
 module.exports.WG_DEVICE = process.env.WG_DEVICE || 'eth0';

src/lib/Server.js

@@ -28,22 +28,18 @@ const {
   PORT,
   WEBUI_HOST,
   RELEASE,
-  PASSWORD,
   PASSWORD_HASH,
   LANG,
   UI_TRAFFIC_STATS,
   UI_CHART_TYPE,
 } = require('../config');
 
-const requiresPassword = !!PASSWORD || !!PASSWORD_HASH;
+const requiresPassword = !!PASSWORD_HASH;
 
 /**
  * Checks if `password` matches the PASSWORD_HASH.
  *
- * For backward compatibility it also allows `password` to match the clear text PASSWORD,
- * but only if no PASSWORD_HASH is provided.
- *
- * If both enviornment variables are not set, the password is always invalid.
+ * If environment variable is not set, the password is always invalid.
  *
  * @param {string} password String to test
  * @returns {boolean} true if matching environment, otherwise false
@@ -56,9 +52,6 @@ const isPasswordValid = (password) => {
   if (PASSWORD_HASH) {
     return bcrypt.compareSync(password, PASSWORD_HASH);
   }
-  if (PASSWORD) {
-    return password === PASSWORD;
-  }
 
   return false;
 };

src/wgpw.mjs

@@ -0,0 +1,54 @@
+'use strict';
+
+// Import needed libraries
+import bcrypt from 'bcryptjs';
+
+// Function to generate hash
+const generateHash = async (password) => {
+  try {
+    const salt = await bcrypt.genSalt(12);
+    const hash = await bcrypt.hash(password, salt);
+    // eslint-disable-next-line no-console
+    console.log(`PASSWORD_HASH='${hash}'`);
+  } catch (error) {
+    throw new Error(`Failed to generate hash : ${error}`);
+  }
+};
+
+// Function to compare password with hash
+const comparePassword = async (password, hash) => {
+  try {
+    const match = await bcrypt.compare(password, hash);
+    if (match) {
+    // eslint-disable-next-line no-console
+      console.log('Password matches the hash !');
+    } else {
+    // eslint-disable-next-line no-console
+      console.log('Password does not match the hash.');
+    }
+  } catch (error) {
+    throw new Error(`Failed to compare password and hash : ${error}`);
+  }
+};
+
+(async () => {
+  try {
+    // Retrieve command line arguments
+    const args = process.argv.slice(2); // Ignore the first two arguments
+    if (args.length > 2) {
+      throw new Error('Usage : wgpw YOUR_PASSWORD [HASH]');
+    }
+
+    const [password, hash] = args;
+    if (password && hash) {
+      await comparePassword(password, hash);
+    } else if (password) {
+      await generateHash(password);
+    }
+  } catch (error) {
+    // eslint-disable-next-line no-console
+    console.error(error);
+    // eslint-disable-next-line no-process-exit
+    process.exit(1);
+  }
+})();

src/wgpw.sh

@@ -0,0 +1,5 @@
+#!/bin/sh
+# This script is intended to be run only inside a docker container, not on the development host machine
+set -e
+# proxy command
+node /app/wgpw.mjs "$@"