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125 lines
5.1 KiB
PHP
125 lines
5.1 KiB
PHP
<?php
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/**
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* Project management tools
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* Tools for deployments and project management
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*
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* GitLab frontend for deployments
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*
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* @author Lukas Bestle <mail@lukasbestle.com>
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* @copyright Copyright 2014 Lukas Bestle
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* @file webhook.gitlab.php
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*/
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// 1. Configuration
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// ====================
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// Long token used as authentication (appended as GET parameter: https://hooks.example.com/webhook.gitlab.php?token=<AUTH_TOKEN>)
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// ATTENTION: Make sure this is long and secure, as anyone could checkout any commit of your projects otherwise
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define('AUTH_TOKEN', '<long token>');
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// Path where you installed the scripts from the "bin" directory of this repository
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// This is required, as PHP doesn't automatically use the environment and therefore your $PATH from your shell
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define('TOOLKIT_PATH', '/home/<user>/bin');
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// 2. Setup
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// ====================
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/**
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* This is an example webhook for GitLab servers.
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* It's fairly simple to set this script up on your server/Uberspace, here's how:
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*
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* 1. Setup the toolkit, so you can access the tools from your SSH shell (more about that in README.md)
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* 2. Take a look at the settings above.
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* 2.1. Seriously, have you set an auth token? Yes? Alright.
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* 3. Place this script in a directory in ~/web/ (something like "~/web/hooks.example.com")
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* 4. You should now be able to access https://hooks.example.com/webhook.gitlab.php?token=<AUTH_TOKEN>
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* This should output "Authenticated, but no POST body sent.".
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* 5. Generate an SSH key by using `ssh-keygen`. The default values are alright for this purpose.
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* 6. Copy the contents of ~/.ssh/id_rsa.pub to your clipboard and add it as "Deploy Key" in your project's GitLab settings interface.
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*
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* Then, you can easily create projects and let this script deploy them for you:
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*
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* 7. Create the project on the server by running either `project_add <path> <exact SSH url from GitLab>#<branch to deploy>` or
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* `site_add <name> <exact SSH url from GitLab>#<branch to deploy>`.
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* It's important to use the exact SSH url (not the HTTPS one), so this script can find the project!
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* 8. Add the URL (the one you tested in 4.) of the script to your project's web hooks.
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* 9. Hit "Test Hook" in GitLab's settings interface. The project should be deployed a few seconds later.
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*
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* Troubleshooting:
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* - Use `tail -f <path to project>/logs/*.log`. This should tell you what went wrong.
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* - Check if the TOOLKIT_PATH you set above is correct.
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* - Check if you set the origin of your project to the correct URL.
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* - Open the web hook URL you entered in GitLab in your browser and check if the output is "Authenticated, but no POST body sent.".
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* - If there is no log file and you can't find the reason yourself, it is complicated. ;)
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* Debugging this is not easy (GitLab does not seem to store logs of its requests), but you can try to craft a JSON body like GitLab,
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* send it to this script by using cURL or GUI tools like Rested and it will tell you exactly what went wrong.
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*/
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// 3. Done
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// The code starts here
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// ====================
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// We are always returning plain text
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header('Content-Type: text/plain');
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// Check if the authentication is valid
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if(!isset($_GET['token']) || $_GET['token'] !== AUTH_TOKEN) {
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http_response_code(401);
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die('Invalid authentication.');
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}
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// Get the request body
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$input = file_get_contents('php://input');
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if(!$input) {
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http_response_code(405);
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die('Authenticated, but no POST body sent.');
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}
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// Parse payload
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$payload = json_decode($input, true);
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if(!is_array($payload)) {
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http_response_code(400);
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die('Invalid payload (no JSON?).');
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}
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// Get some interesting information from the payload
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$url = $payload['repository']['url'];
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$commit = $payload['after'];
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$ref = $payload['ref'];
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if(!preg_match('{(?:.*/){2}(.*)}', $ref, $matches)) {
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http_response_code(400);
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die('Invalid ref field (does not match regular expression "(?:.*/){2}(.*)").');
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}
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$branch = $matches[1];
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// Debug
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echo "Received commit hash \"$commit\" for repository URL \"$url\" (branch \"$branch\").\n";
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// Open ~/.projects and iterate through every project
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$listPointer = fopen($_SERVER['HOME'] . '/.projects', 'r');
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$exitCode = 0;
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while(($project = fgets($listPointer)) !== false) {
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// Trim whitespace
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$project = trim($project);
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// Only deployable projects are interesting for us
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if(!is_file($project . '/.origin') || !is_file($project . '/.branch')) continue;
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// If there is a .origin and .branch file, check if they match
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if(file_get_contents($project . '/.origin') == $url && file_get_contents($project . '/.branch') == $branch) {
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// Found the right project
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echo "Found project at $project, running deploy script.\n";
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// Run deploy script (in the background, because GitLab doesn't like requests > 10sec by default)
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passthru('export PATH=' . escapeshellarg(TOOLKIT_PATH) . ':$PATH; project_deploy ' . escapeshellarg($project) . ' ' . escapeshellarg($commit) . ' > /dev/null 2>&1 &', $exitCode);
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// If it didn't work, add debug statement
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if($exitCode !== 0) echo "Something didn't work.\n";
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}
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}
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// Iterated through every project, exit
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http_response_code(($exitCode === 0)? 200 : 500);
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die('All done.');
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