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WireGuard configs #591
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WireGuard configs #591
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,61 @@ | ||
| class WgConfigsController < ApplicationController | ||
| load_and_authorize_resource | ||
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| before_action :set_user, only: [:create, :destroy, :export] | ||
| before_action :authenticate_token!, only: [:export_peers] | ||
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| def create | ||
| @wgconfig = WgConfig.new(wg_config_params) | ||
|
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| if @wgconfig.save | ||
| redirect_to edit_user_path(@user, anchor: 'wg-configs'), notice: "Конфигурация WireGuard создана успешно" | ||
| else | ||
| redirect_to edit_user_path(@user), | ||
| alert: "Ошибка создания конфигурации WireGuard: #{@wgconfig.errors.full_messages.join("\n")}" | ||
| end | ||
| end | ||
|
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| def destroy | ||
| wg = @user.wg_configs.find_by(id: params[:id]) | ||
| wg&.destroy | ||
| redirect_to edit_user_path(@user, anchor: 'wg-configs') | ||
| end | ||
|
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| def export | ||
| wg = @user.wg_configs.find_by(id: params[:id]) | ||
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| if wg | ||
| send_data wg.to_s, filename: "wg-hackerspace-#{wg.name}.conf", type: "text/plain" | ||
| else | ||
| redirect_to user_path(@user), alert: "Конфигурация WireGuard не найдена" | ||
| end | ||
| end | ||
|
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| def export_peers | ||
| wgs = WgConfig.order(:user_id).select { |wg| wg.user.active? } | ||
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| peers_config = wgs.map { |wg| wg.as_peer }.join("\n\n") | ||
|
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| render plain: peers_config | ||
| end | ||
|
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| private | ||
|
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| def authenticate_token! | ||
| token = request.headers['Authorization']&.split&.last | ||
| if not ActiveSupport::SecurityUtils.secure_compare(token || '', Rails.application.secrets.wireguard_token) then | ||
| render plain: "Authorization required\n", status: :unauthorized | ||
| end | ||
| end | ||
|
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| def wg_config_params | ||
| params.require(:wg_config).permit( | ||
| :name, | ||
| :user_id | ||
| ) | ||
| end | ||
|
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||
| def set_user | ||
| @user = User.find(params[:user_id]) | ||
| end | ||
| end |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,81 @@ | ||
| require 'ipaddress' | ||
| require 'open3' | ||
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| class WgConfig < ApplicationRecord | ||
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| belongs_to :user | ||
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| validates :name, presence: true | ||
| validates :privatekey, presence: true | ||
| validates :publickey, presence: true | ||
| validates :name, uniqueness: { scope: :user_id } | ||
|
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| after_initialize :init_keys | ||
|
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| def generate_keys! | ||
| self.privatekey = gen_privatekey | ||
| self.publickey = gen_publickey(self.privatekey) | ||
| end | ||
|
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| def addresses(as_networks=true) | ||
| raise "Model is not saved" if self.id.nil? | ||
|
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| first = IPAddress Setting['wgFirstClientAddress'] | ||
| last = IPAddress Setting['wgLastClientAddress'] | ||
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| ip = IPAddress(first.to_i + self.id) | ||
|
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| raise "Failed to assign IP: out of range" if ip > last | ||
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| ip.netmask = Setting['wgNetmask'] if as_networks | ||
|
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| ip.to_string | ||
| end | ||
|
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| def to_s | ||
| lines = [] | ||
| lines << "# WireGuard config #{name}" | ||
| lines << '[Interface]' | ||
| lines << "PrivateKey = #{privatekey}" | ||
| lines << "Address = #{self.addresses}" | ||
| lines << '' | ||
| lines << '[Peer]' | ||
| lines << "PublicKey = #{Setting['wgServerPublicKey']}" | ||
| lines << "Endpoint = #{Setting['wgServerEndpoint']}" | ||
| lines << "AllowedIPs = #{Setting['wgAllowedIPs']}" | ||
|
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| lines.join("\n") | ||
| end | ||
|
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| def as_peer | ||
| s = [] | ||
| s << "# User #{self.user_id}, config '#{self.name}'" | ||
| s << "[Peer]" | ||
| s << "PublicKey = #{publickey}" | ||
| s << "AllowedIPs = #{addresses(false)}" | ||
|
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| s.join("\n") | ||
| end | ||
|
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| private | ||
|
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| def init_keys | ||
| generate_keys! if self.privatekey.blank? | ||
| end | ||
|
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| def gen_privatekey | ||
| key, status = Open3.capture2("wg genkey") | ||
| key.strip | ||
| end | ||
|
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| def gen_publickey(private_key) | ||
| stdout_str = '' | ||
| Open3.popen2("wg pubkey") do |stdin, stdout, _wait_thr| | ||
| stdin.print(private_key) | ||
| stdin.close | ||
| stdout_str = stdout.gets | ||
| end | ||
|
|
||
| stdout_str.strip | ||
| end | ||
| end | ||
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If we had to call external programs here, I would just wrap the whole thing in shell script, so that it could run independently of Ruby.