356 lines
14 KiB
PHP
Executable File
356 lines
14 KiB
PHP
Executable File
<?php
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declare(strict_types=1);
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namespace Modules\Helpdesk\Http\Controllers;
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use Illuminate\Http\JsonResponse;
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use Illuminate\Http\Request;
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use Illuminate\Support\Arr;
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use Illuminate\Support\Facades\Log;
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use Illuminate\Support\Str;
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use JsonException;
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use Modules\Helpdesk\Models\GitRepository;
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use Modules\Helpdesk\Services\GitWebhookIngestionService;
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final class GitWebhookController
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{
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/**
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* Ingest a signed Git provider webhook for a registered Helpdesk repository.
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*/
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public function __invoke(Request $request, GitRepository $repository, GitWebhookIngestionService $service): JsonResponse
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{
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$provider = strtolower((string) ($repository->provider ?: 'git'));
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$event = $this->eventName($request, $provider);
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$deliveryId = $this->deliveryId($request, $provider);
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$rawPayload = $request->getContent();
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if (! $repository->is_active) {
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$result = ['status' => 'rejected', 'message' => 'Repository is inactive.', 'commit_count' => 0, 'linked_count' => 0, 'ignored_count' => 1];
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$service->logWebhook($repository, $provider, $deliveryId, $event, $result);
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return response()->json($result, 403);
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}
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if (! $this->hasValidSignature($request, $repository, $provider, $rawPayload)) {
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$result = ['status' => 'rejected', 'message' => 'Git webhook signature or token validation failed.', 'commit_count' => 0, 'linked_count' => 0, 'ignored_count' => 1];
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$service->logWebhook($repository, $provider, $deliveryId, $event, $result);
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return response()->json($result, 403);
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}
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try {
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/** @var array<string, mixed> $payload */
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$payload = json_decode($rawPayload, true, 512, JSON_THROW_ON_ERROR);
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} catch (JsonException) {
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$result = ['status' => 'rejected', 'message' => 'Invalid JSON webhook payload.', 'commit_count' => 0, 'linked_count' => 0, 'ignored_count' => 1];
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$service->logWebhook($repository, $provider, $deliveryId, $event, $result);
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return response()->json($result, 400);
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}
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$result = $service->ingest($repository, $payload, $provider, $deliveryId, $event);
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return response()->json($result, 202);
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}
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/**
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* Ingest the local Gitea webhook URL that does not include a repository id.
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*/
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public function gitea(Request $request, GitWebhookIngestionService $service): JsonResponse
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{
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$provider = 'gitea';
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$event = $this->eventName($request, $provider);
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$deliveryId = $this->deliveryId($request, $provider);
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$rawPayload = $request->getContent();
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try {
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/** @var array<string, mixed> $payload */
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$payload = json_decode($rawPayload, true, 512, JSON_THROW_ON_ERROR);
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} catch (JsonException) {
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return response()->json([
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'status' => 'rejected',
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'message' => 'Invalid JSON webhook payload.',
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'commit_count' => 0,
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'linked_count' => 0,
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'ignored_count' => 1,
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], 400);
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}
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$repository = $this->repositoryForGiteaPayload($payload);
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if (! $repository instanceof GitRepository) {
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return response()->json([
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'status' => 'rejected',
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'message' => 'No active Helpdesk Git repository matched the Gitea webhook payload.',
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'commit_count' => 0,
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'linked_count' => 0,
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'ignored_count' => 1,
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], 404);
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}
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if (! $this->hasValidGiteaSecurity($request, $repository, $provider, $rawPayload)) {
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$result = ['status' => 'rejected', 'message' => 'Git webhook signature or token validation failed.', 'commit_count' => 0, 'linked_count' => 0, 'ignored_count' => 1];
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$service->logWebhook($repository, $provider, $deliveryId, $event, $result, $payload);
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return response()->json($result, 403);
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}
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$result = $service->ingest($repository, $payload, $provider, $deliveryId, $event);
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return response()->json($result, 202);
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}
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/**
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* Validate provider-specific webhook signatures or tokens.
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*/
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private function hasValidSignature(Request $request, GitRepository $repository, string $provider, string $rawPayload): bool
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{
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$secret = $this->secretForProvider($repository, $provider);
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if ($secret === '') {
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return false;
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}
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return match ($provider) {
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'github' => $this->hasValidGitHubSignature($request, $secret, $rawPayload),
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'gitlab' => hash_equals($secret, (string) $request->header('X-Gitlab-Token', '')),
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'gitea' => $this->hasValidGiteaSignature($request, $secret, $rawPayload),
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'bitbucket' => $this->hasValidBitbucketSignature($request, $secret, $rawPayload),
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default => $this->hasValidGenericSignature($request, $secret, $rawPayload),
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};
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}
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/**
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* Resolve the repository webhook secret, with local Gitea env fallback support.
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*/
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private function secretForProvider(GitRepository $repository, string $provider): string
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{
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$secret = trim((string) $repository->webhook_secret);
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if ($secret !== '') {
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return $secret;
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}
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return $provider === 'gitea' ? trim((string) config('services.gitea.webhook_secret', '')) : '';
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}
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/**
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* Validate GitHub's current SHA-256 signature and legacy SHA-1 signature.
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*/
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private function hasValidGitHubSignature(Request $request, string $secret, string $rawPayload): bool
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{
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$sha256Signature = (string) $request->header('X-Hub-Signature-256', '');
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$sha1Signature = (string) $request->header('X-Hub-Signature', '');
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return hash_equals('sha256='.hash_hmac('sha256', $rawPayload, $secret), $sha256Signature)
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|| hash_equals('sha1='.hash_hmac('sha1', $rawPayload, $secret), $sha1Signature);
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}
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/**
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* Validate Gitea's raw SHA-256 signature and GitHub-compatible HMAC headers.
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*/
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private function hasValidGiteaSignature(Request $request, string $secret, string $rawPayload): bool
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{
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$giteaSignature = (string) $request->header('X-Gitea-Signature', '');
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$sha256 = hash_hmac('sha256', $rawPayload, $secret);
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$sha1 = hash_hmac('sha1', $rawPayload, $secret);
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return hash_equals($sha256, $giteaSignature)
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|| hash_equals('sha256='.$sha256, $giteaSignature)
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|| hash_equals('sha1='.$sha1, $giteaSignature)
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|| $this->hasValidGitHubSignature($request, $secret, $rawPayload)
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|| $this->hasValidGenericSignature($request, $secret, $rawPayload);
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}
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/**
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* Validate Bitbucket's webhook HMAC signature.
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*/
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private function hasValidBitbucketSignature(Request $request, string $secret, string $rawPayload): bool
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{
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$signature = (string) $request->header('X-Hub-Signature', '');
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return hash_equals('sha256='.hash_hmac('sha256', $rawPayload, $secret), $signature)
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|| hash_equals($secret, (string) $request->header('X-Helpdesk-Token', ''));
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}
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/**
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* Validate a generic Git webhook using either a token header or HMAC signature.
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*/
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private function hasValidGenericSignature(Request $request, string $secret, string $rawPayload): bool
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{
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$token = (string) ($request->header('X-Helpdesk-Token') ?: $request->header('X-Gitlab-Token') ?: $request->header('X-Gitea-Token'));
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$signature = (string) ($request->header('X-Hub-Signature-256') ?: $request->header('X-Hub-Signature'));
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return hash_equals($secret, $token)
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|| hash_equals('sha256='.hash_hmac('sha256', $rawPayload, $secret), $signature)
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|| hash_equals('sha1='.hash_hmac('sha1', $rawPayload, $secret), $signature);
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}
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/**
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* Validate Gitea webhook security without allowing an optional Authorization
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* header mismatch to hide otherwise valid signed push deliveries.
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*/
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private function hasValidGiteaSecurity(Request $request, GitRepository $repository, string $provider, string $rawPayload): bool
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{
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if ($this->hasValidSignature($request, $repository, $provider, $rawPayload)) {
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return true;
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}
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return $this->hasValidGiteaAuthorization($request);
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}
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/**
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* Validate the optional Authorization header configured for the local Gitea webhook.
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*/
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private function hasValidGiteaAuthorization(Request $request): bool
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{
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$expected = trim((string) config('services.gitea.webhook_authorization', ''));
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if ($expected === '') {
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return true;
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}
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$actual = trim((string) $request->header('Authorization', ''));
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return hash_equals($expected, $actual)
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|| hash_equals('Basic '.$expected, $actual)
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|| (Str::startsWith($expected, 'Basic ') && hash_equals($expected, $actual));
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}
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/**
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* Match a Gitea webhook payload to the configured Helpdesk repository.
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*
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* @param array<string, mixed> $payload
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*/
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private function repositoryForGiteaPayload(array $payload): ?GitRepository
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{
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$repositories = GitRepository::query()
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->where('is_active', true)
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->whereRaw('LOWER(provider) IN (?, ?)', ['gitea', 'git'])
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->get();
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if ($repositories->isEmpty()) {
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Log::warning('Helpdesk Gitea webhook received but no active Gitea/git repository is configured.');
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return null;
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}
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$payloadValues = array_values(array_filter([
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Arr::get($payload, 'repository.full_name'),
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Arr::get($payload, 'repository.name'),
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Arr::get($payload, 'repository.html_url'),
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Arr::get($payload, 'repository.clone_url'),
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Arr::get($payload, 'repository.ssh_url'),
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Arr::get($payload, 'repository.url'),
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Arr::get($payload, 'repository.owner.username') && Arr::get($payload, 'repository.name')
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? Arr::get($payload, 'repository.owner.username').'/'.Arr::get($payload, 'repository.name')
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: null,
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], static fn (mixed $value): bool => is_scalar($value) && trim((string) $value) !== ''));
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$normalisedPayloadValues = array_values(array_filter(array_map(
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fn (mixed $value): ?string => $this->normaliseRepositoryIdentity((string) $value),
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$payloadValues,
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)));
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foreach ($repositories as $repository) {
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$repositoryValues = array_filter([
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$repository->remote_url,
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$repository->name,
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Str::of((string) $repository->remote_url)->afterLast(':')->beforeLast('.git')->value(),
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], static fn (mixed $value): bool => is_scalar($value) && trim((string) $value) !== '');
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$normalisedRepositoryValues = array_values(array_filter(array_map(
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fn (mixed $value): ?string => $this->normaliseRepositoryIdentity((string) $value),
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$repositoryValues,
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)));
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foreach ($normalisedPayloadValues as $payloadValue) {
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foreach ($normalisedRepositoryValues as $repositoryValue) {
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if ($payloadValue === $repositoryValue
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|| str_ends_with($repositoryValue, '/'.$payloadValue)
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|| str_ends_with($payloadValue, '/'.$repositoryValue)) {
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return $repository;
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}
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}
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}
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}
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if ($repositories->count() === 1) {
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return $repositories->first();
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}
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Log::warning('Helpdesk Gitea webhook did not match any configured repository.', [
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'payload_repository' => Arr::get($payload, 'repository.full_name') ?: Arr::get($payload, 'repository.clone_url') ?: Arr::get($payload, 'repository.html_url'),
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'configured_repository_count' => $repositories->count(),
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]);
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return null;
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}
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/**
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* Normalise a repository name or URL so Gitea payloads match local settings reliably.
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*/
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private function normaliseRepositoryIdentity(string $value): ?string
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{
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$value = trim($value);
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if ($value === '') {
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return null;
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}
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$value = Str::of($value)
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->replace('\\', '/')
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->replace('ssh://git@', 'ssh://')
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->replace('git@', '')
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->replace('.git', '')
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->lower()
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->value();
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$path = parse_url($value, PHP_URL_PATH);
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if (is_string($path) && trim($path, '/') !== '') {
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$value = trim($path, '/');
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} elseif (str_contains($value, ':')) {
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$value = Str::of($value)->afterLast(':')->trim('/')->value();
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}
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$segments = array_values(array_filter(explode('/', trim($value, '/'))));
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if ($segments === []) {
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return null;
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}
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return implode('/', array_slice($segments, -2));
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}
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/**
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* Read the event name from provider-specific headers.
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*/
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private function eventName(Request $request, string $provider): ?string
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{
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return match ($provider) {
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'github' => $request->header('X-GitHub-Event'),
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'gitlab' => $request->header('X-Gitlab-Event'),
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'gitea' => $request->header('X-Gitea-Event') ?: $request->header('X-Gitea-Event-Type') ?: $request->header('X-GitHub-Event'),
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'bitbucket' => $request->header('X-Event-Key'),
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default => $request->header('X-Helpdesk-Event') ?: $request->header('X-GitHub-Event') ?: $request->header('X-Gitlab-Event') ?: 'push',
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};
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}
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/**
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* Read the provider delivery/request id used for idempotent audit tracing.
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*/
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private function deliveryId(Request $request, string $provider): ?string
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{
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return match ($provider) {
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'github' => $request->header('X-GitHub-Delivery'),
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'gitlab' => $request->header('X-Gitlab-Event-UUID') ?: $request->header('X-Request-Id'),
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'gitea' => $request->header('X-Gitea-Delivery') ?: $request->header('X-GitHub-Delivery') ?: $request->header('X-Request-Id'),
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'bitbucket' => $request->header('X-Request-UUID') ?: $request->header('X-Request-Id'),
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default => $request->header('X-Helpdesk-Delivery') ?: $request->header('X-GitHub-Delivery') ?: $request->header('X-Request-Id'),
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};
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}
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}
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