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deploy.php
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<?php
/*
* php-git-deploy
* PHP script for automatic code deployment directly from Github or Bitbucket to your server using webhooks
* Documentation: https://github.com/Lyquix/php-git-deploy
*/
// Measure execution time
$time = -microtime(true);
/* Functions */
// Output buffering handler
function obHandler($buffer) {
global $output;
$output .= $buffer;
return $buffer;
}
// Render error page
function errorPage($msg) {
header($_SERVER['SERVER_PROTOCOL'] . ' 403 Forbidden', true, 403);
echo "<html>\n<body>\n"
. $msg . "\n"
. "</body>\n</html>\n"
. "<!--\n~~~~~~~~~~~~~ Prevent browser friendly error page ~~~~~~~~~~~~~~\n"
. str_repeat(str_repeat("~", 64) . "\n", 8)
. "-->\n";
}
// Command to execute at the end of the script
function endScript() {
// Remove lock file
unlink(__DIR__ . '/deploy.lock');
// Flush buffer and prepare output for log and email
ob_end_flush();
global $output;
// Remove <head>, <script>, and <style> tags, including content
$output = preg_replace('/<head[\s\w\W\n]+<\/head>/m', '', $output);
$output = preg_replace('/<script[\s\w\W\n]+<\/script>/m', '', $output);
$output = preg_replace('/<style[\s\w\W\n]+<\/style>/m', '', $output);
// Add heading and strip tags
$output = str_repeat("~", 80) . "\n"
. '[' . date('c') . '] - ' . $_SERVER['REMOTE_ADDR'] . " - b=" . $_GET['b'] . ' c=' . $_GET['c'] . "\n"
. strip_tags($output);
// Decode HTML entities
$output = html_entity_decode($output);
// Collapse multiple blank lines into one
$output = preg_replace('/^\n+/m', "\n", $output);
// Save to log file
if(defined('LOG_FILE') && LOG_FILE !== '') error_log($output, 3, LOG_FILE);
// Send email notification
if(defined('EMAIL_NOTIFICATIONS') && EMAIL_NOTIFICATIONS !== '') error_log($output, 1, EMAIL_NOTIFICATIONS);
}
/* Begin Script Execution */
// Prevent caching
header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0");
header("Cache-Control: post-check=0, pre-check=0", false);
header("Pragma: no-cache");
// Start output buffering
ob_start('obHandler');
$output = '';
// Check if there is a configuration file
if (file_exists(__DIR__ . '/deploy-config.php')) {
require_once __DIR__ . '/deploy-config.php';
} else {
errorPage('<h2>File deploy-config.php does not exist</h2>');
endScript();
die();
}
// Check configuration errors
$err = array();
if (!defined('ACCESS_TOKEN') || ACCESS_TOKEN === '') $err[] = 'Access token is not configured';
if (!defined('REMOTE_REPOSITORY') || REMOTE_REPOSITORY === '') $err[] = 'Remote repository is not configured';
if (!defined('BRANCH') || BRANCH === '') $err[] = 'Branch is not configured';
if (!defined('GIT_DIR') || GIT_DIR === '') $err[] = 'Git directory is not configured';
if (!defined('TARGET_DIR') || TARGET_DIR === '') $err[] = 'Target directory is not configured';
if (!defined('TIME_LIMIT')) define('TIME_LIMIT', 60);
// If there is a configuration error
if (count($err)) {
errorPage("<h2>Configuration Error</h2>\n<pre>\n" . implode("\n", $err) . "\n</pre>");
endScript();
die();
}
// Check if lock file exists
if (file_exists(__DIR__ . '/deploy.lock')) {
errorPage('<h2>File deploy.lock detected, another process already running</h2>');
endScript();
die();
}
// Create lock file
$fh = fopen(__DIR__ . '/deploy.lock', 'w');
fclose($fh);
// Check if IP is allowed
if(defined('IP_ALLOW') && count(unserialize(IP_ALLOW))) {
$allow = false;
foreach(unserialize(IP_ALLOW) as $ip_allow) {
if(strpos($ip_allow, '/') === false) {
// Single IP
if(inet_pton($_SERVER['REMOTE_ADDR']) == inet_pton($ip_allow)) {
$allow = true;
break;
}
}
else {
// IP range
list($subnet, $bits) = explode('/', $ip_allow);
// Convert subnet to binary string of $bits length
$subnet = unpack('H*', inet_pton($subnet));
foreach($subnet as $i => $h) $subnet[$i] = base_convert($h, 16, 2);
$subnet = substr(implode('', $subnet), 0, $bits);
// Convert remote IP to binary string of $bits length
$ip = unpack('H*', inet_pton($_SERVER['REMOTE_ADDR']));
foreach($ip as $i => $h) $ip[$i] = base_convert($h, 16, 2);
$ip = substr(implode('', $ip), 0, $bits);
if($subnet == $ip) {
$allow = true;
break;
}
}
}
if(!$allow) {
errorPage('<h2>Access Denied</h2>');
endScript();
die();
}
}
// If there's authorization error
if (!isset($_GET['t']) || $_GET['t'] !== ACCESS_TOKEN || DISABLED === true) {
errorPage('<h2>Access Denied</h2>');
endScript();
die();
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="robots" content="noindex">
<title>PHP Git deploy script</title>
<style>
body { padding: 0 1em; background: #222; color: #fff; }
h2, .error { color: #c33; }
.prompt { color: #6be234; }
.command { color: #729fcf; }
.output { color: #999; }
</style>
</head>
<body>
<pre>
<?php
// The branch
$branch = '';
// Process request headers
$headers = getallheaders();
if(isset($headers['X-Event-Key'])) {
// Bitbucket webhook
echo "\nBitbucket headers detected\n";
// Get payload
$payload = json_decode(file_get_contents('php://input'));
// Accept only push and pull request merge events
if($headers['X-Event-Key'] == 'repo:push') {
// Check branch
$branch = $payload->push->changes[0]->new->name;
} else if($headers['X-Event-Key'] == 'pullrequest:fulfilled') {
// Check branch
$branch = $payload->pullrequest->destination->branch->name;
} else {
echo "\nOnly push and merged pull request events are processed\n\nDone.\n</pre></body></html>";
endScript();
exit;
}
} else if(isset($headers['X-GitHub-Event'])) {
// Github webhook
echo "\nGithub headers detected\n";
// Get payload
if($headers['Content-Type'] == 'application/json') $payload = json_decode(file_get_contents('php://input'));
else $payload = json_decode($_POST['payload']);
// Accept only push and pull request merge events
if($headers['X-GitHub-Event'] == 'push') {
// Check branch
$branch = explode('/', $payload->ref)[2];
} else if($headers['X-GitHub-Event'] == 'pull_request' && $payload->action == 'closed' && $payload->pull_request->merged == true) {
// Check branch
$branch = $payload->pull_request->head->ref;
} else {
echo "\nOnly push and merged pull request events are processed\n\nDone.\n</pre></body></html>";
endScript();
exit;
}
}
// Branch from webhook?
if($branch) {
// Only main branch is allowed for webhook deployments
if($branch != unserialize(BRANCH)[0]) {
echo "\nBranch $branch not allowed, stopping execution.\n</pre></body></html>";
endScript();
exit;
}
} else {
echo "\nNo Bitbucket or Github webhook headers detected. Assumming manual trigger.\n";
if(isset($_GET['b'])) {
$branch = $_GET['b'];
// Check if branch is allowed
if(!in_array($branch, unserialize(BRANCH))) {
echo "\nBranch $branch not allowed, stopping execution.\n</pre></body></html>";
endScript();
exit;
}
} else {
$branch = unserialize(BRANCH)[0];
echo "No branch specified, assuming default branch $branch\n";
}
}
?>
Checking the environment ...
Running as <strong><?php echo trim(shell_exec('whoami')); ?></strong>.
<?php
// Check if the required programs are available
$requiredBinaries = array('git', 'rsync');
foreach ($requiredBinaries as $command) {
$path = trim(shell_exec('which '.$command));
if ($path == '') {
header($_SERVER['SERVER_PROTOCOL'] . ' 500 Internal Server Error', true, 500);
endScript();
die(sprintf('<div class="error"><b>%s</b> not available. It needs to be installed on the server for this script to work.</div>', $command));
} else {
$version = explode("\n", shell_exec($command.' --version'));
printf('<b>%s</b> : %s'."\n"
, $path
, $version[0]
);
}
}
?>
Environment OK.
Deploying : <?php echo REMOTE_REPOSITORY; ?> (<?php echo $branch; ?>)
to : <?php echo TARGET_DIR; ?>
<?php
// Runs shell commands in Git directory, outputs command and result
function cmd($command, $print = true) {
set_time_limit(TIME_LIMIT); // Reset the time limit for each command
if (file_exists(GIT_DIR) && is_dir(GIT_DIR)) {
chdir(GIT_DIR); // Ensure that we're in the right directory
}
$tmp = array();
exec($command.' 2>&1', $tmp, $return_code); // Execute the command
// Output the result
if($print) {
printf('
<span class="prompt">$</span> <span class="command">%s</span>
<span class="output">%s</span>
'
, htmlentities(trim($command))
, htmlentities(trim(implode("\n", $tmp)))
);
}
// Error handling and cleanup
if($print && $return_code !== 0) {
header($_SERVER['SERVER_PROTOCOL'] . ' 500 Internal Server Error', true, 500);
printf('<span class="error">Error encountered! Stopping the script to prevent possible data loss.
CHECK THE DATA IN YOUR TARGET DIR!</span>
'
);
endScript();
exit;
}
return $tmp;
}
// The commits
$commits = array();
// The checkout commit
$checkout = '';
// The current files version
$version = '';
// Check if there is a git directory
if (!is_dir(GIT_DIR)) {
// Clone the repository into the GIT_DIR
echo "\nGit directory not found, cloning repository\n";
cmd(sprintf(
'git clone --branch %s %s %s'
, $branch
, REMOTE_REPOSITORY
, GIT_DIR
));
// Checkout branch
echo "\nCheckout branch $branch\n";
cmd(sprintf(
'git --git-dir="%s.git" --work-tree="%s" checkout %s'
, GIT_DIR
, GIT_DIR
, $branch
));
} else {
// GIT_DIR exists and hopefully already contains the correct remote origin
// so we'll fetch the changes
echo "\nFetching repository from origin\n";
cmd(sprintf(
'git --git-dir="%s.git" --work-tree="%s" fetch --tags origin %s'
, GIT_DIR
, GIT_DIR
, $branch
));
// Checkout branch
echo "\nCheckout branch $branch\n";
cmd(sprintf(
'git --git-dir="%s.git" --work-tree="%s" checkout %s'
, GIT_DIR
, GIT_DIR
, $branch
));
}
// Get list of all commits
$commits = cmd(sprintf(
'git --no-pager --git-dir="%s.git" log --pretty=format:"%%h" origin/%s'
, GIT_DIR
, $branch)
, false);
// Set checkout commit
if(in_array($_GET['c'], $commits)) {
$checkout = $_GET['c'];
} else {
$checkout = reset($commits);
echo "\nPassed commit hash is blank or doesn't match existing commits. Assuming most recent commit in branch: $checkout\n";
}
// Checkout specific commit
echo "\nReset branch to commit $checkout in git directory\n";
cmd(sprintf(
'git --git-dir="%s.git" --work-tree="%s" reset --hard %s'
, GIT_DIR
, GIT_DIR
, $checkout
));
// Update the submodules
echo "\nUpdating git submodules in git directory\n";
cmd('git submodule update --init --recursive');
// Get current version or assume oldest commit
if(file_exists(TARGET_DIR . 'VERSION')) {
$version = trim(file_get_contents(TARGET_DIR . 'VERSION'));
if(!in_array($version, $commits)) {
$version = end($commits);
echo "WARNING: version file commit hash doesn't match existing commits, assuming oldest commit $version\n";
} else echo "Current target directory version is $version\n";
}
else {
$version = end($commits);
echo "No version file found, assuming current version is oldest commit\n";
}
// Get list of added, modified and deleted files
echo "\nGet list of files added, modified and deleted from $version to $checkout\n";
$files = cmd(sprintf(
'git --no-pager --git-dir="%s.git" diff --name-status %s %s'
, GIT_DIR
, $version
, $checkout
));
// Count files that were added or modified. Add removed files to array.
$added = $modified = 0;
$deleted = array();
foreach($files as $file) {
if(preg_match('/^([ADM])\s*(.*)/', $file, $matches)) {
switch($matches[1]) {
case 'A':
$added++;
break;
case 'M':
$modified++;
break;
case 'D':
$deleted[] = TARGET_DIR . $matches[2];
break;
}
}
}
printf(
"\nDeploying %d files:\n Added %d\n Modified %d\n Deleted %d\n"
, count($files)
, $added
, $modified
, count($deleted)
);
echo "\nNOTE: repository files that have been modfied or removed in target directory will be resynced with repository even if not listed in commits\n";
// rsync all added and modified files (no deletes, exclude .git directory)
cmd(sprintf(
'rsync -rltgoDzvO %s %s --exclude=.git'
, GIT_DIR
, TARGET_DIR
));
echo "\nDeleting files removed from repository\n";
// Delete files removed in commits
foreach($deleted as $file) unlink($file);
// Update version file to current commit
echo "\nUpdate target directory version file to commit $checkout\n";
cmd(sprintf(
'echo "%s" > %s'
, $checkout
, TARGET_DIR . 'VERSION'
));
?>
Done in <?php echo $time + microtime(true); ?>sec
</pre>
</body>
</html>
<?php
endScript();
exit;