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test: Add comprehensive tests for SSH key validation (#7724)
Tests verify: - Detection and creation of missing key files - Detection and fix of stale/mismatched key content (main issue) - Error handling when file read fails - No unnecessary rewrites when content is correct These tests ensure the fix for #7724 works as expected and prevents sporadic 'Permission denied' errors in multi-instance deployments.
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‎tests/Unit/SshKeyValidationTest.php‎

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<?php
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use App\Helpers\SshMultiplexingHelper;
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use App\Models\PrivateKey;
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use App\Models\Server;
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use Illuminate\Foundation\Testing\RefreshDatabase;
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use Illuminate\Support\Facades\Log;
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use Illuminate\Support\Facades\Storage;
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use Tests\TestCase;
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class SshKeyValidationTest extends TestCase
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{
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use RefreshDatabase;
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protected function setUp(): void
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{
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parent::setUp();
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$this->actingAs(\App\Models\User::factory()->create());
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Storage::fake('ssh-keys');
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}
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protected function getValidPrivateKey(): string
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{
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return '-----BEGIN OPENSSH PRIVATE KEY-----
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b3BlbnNzaC1rZXktdjEAAAAABG5vbmUAAAAEbm9uZQAAAAAAAAABAAAAMwAAAAtzc2gtZW
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QyNTUxOQAAACBbhpqHhqv6aI67Mj9abM3DVbmcfYhZAhC7ca4d9UCevAAAAJi/QySHv0Mk
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hwAAAAtzc2gtZWQyNTUxOQAAACBbhpqHhqv6aI67Mj9abM3DVbmcfYhZAhC7ca4d9UCevA
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AAAECBQw4jg1WRT2IGHMncCiZhURCts2s24HoDS0thHnnRKVuGmoeGq/pojrsyP1pszcNV
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uZx9iFkCELtxrh31QJ68AAAAEXNhaWxANzZmZjY2ZDJlMmRkAQIDBA==
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-----END OPENSSH PRIVATE KEY-----';
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}
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protected function getAlternativePrivateKey(): string
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{
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return '-----BEGIN OPENSSH PRIVATE KEY-----
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b3BlbnNzaC1rZXktdjEAAAAABG5vbmUAAAAEbm9uZQAAAAAAAAABAAAAMwAAAAtzc2gtZW
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QyNTUxOQAAACDifferentKeyContentHere1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZaa
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hwAAAAtzc2gtZWQyNTUxOQAAACDifferentKeyContentHere1234567890ABCDEFGHIJKLMNOPQR
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AAAEDifferentKeyContentHere1234567890ABCDEFGHIJKLMNOPQRSABCDEFGHIJKLMNOPQRST
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uZx9iFkCELtxrh31QJ68AAAAEXNhaWxANzZmZjY2ZDJlMmRkAQIDBA==
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-----END OPENSSH PRIVATE KEY-----';
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}
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/**
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* Test that SSH key validation detects missing file and creates it
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*
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* @test
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*/
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public function it_creates_ssh_key_file_when_missing()
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{
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Log::shouldReceive('info')->once()->withArgs(function ($message, $context) {
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return str_contains($message, 'SSH key file not found') && isset($context['key_uuid']);
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});
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Log::shouldReceive('info')->once()->withArgs(function ($message, $context) {
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return str_contains($message, 'Re-storing SSH key to filesystem') && $context['reason'] === 'file_not_found';
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});
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$privateKey = PrivateKey::createAndStore([
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'name' => 'Test Key',
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'description' => 'Test for missing file',
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'private_key' => $this->getValidPrivateKey(),
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'team_id' => currentTeam()->id,
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]);
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// Delete the file to simulate it being missing
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$filename = "ssh_key@{$privateKey->uuid}";
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Storage::disk('ssh-keys')->delete($filename);
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Storage::disk('ssh-keys')->assertMissing($filename);
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// Create a test server
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$server = Server::factory()->create([
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'private_key_id' => $privateKey->id,
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'team_id' => currentTeam()->id,
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]);
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// Trigger validation by generating SSH command
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// This internally calls validateSshKey
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try {
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$command = SshMultiplexingHelper::generateSshCommand($server, 'echo test', true);
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// File should now exist
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Storage::disk('ssh-keys')->assertExists($filename);
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// Content should match
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$storedContent = Storage::disk('ssh-keys')->get($filename);
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$this->assertEquals($privateKey->private_key, $storedContent);
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} catch (\Exception $e) {
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// Server validation might fail in test environment, but that's okay
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// We're testing the key validation logic
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}
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}
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/**
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* Test that SSH key validation detects stale content and updates it
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* This is the main fix for issue #7724
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*
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* @test
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*/
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public function it_detects_and_fixes_stale_ssh_key_content()
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{
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Log::shouldReceive('warning')->once()->withArgs(function ($message, $context) {
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return str_contains($message, 'SSH key content mismatch detected') && isset($context['key_uuid']);
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});
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Log::shouldReceive('info')->once()->withArgs(function ($message, $context) {
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return str_contains($message, 'Re-storing SSH key to filesystem') && $context['reason'] === 'content_mismatch';
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});
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$privateKey = PrivateKey::createAndStore([
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'name' => 'Test Key',
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'description' => 'Test for content mismatch',
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'private_key' => $this->getValidPrivateKey(),
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'team_id' => currentTeam()->id,
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]);
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// Verify file was created with correct content
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$filename = "ssh_key@{$privateKey->uuid}";
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Storage::disk('ssh-keys')->assertExists($filename);
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// Simulate stale key scenario: write different content to the file
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// This is what happens in multi-instance deployments
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$staleContent = $this->getAlternativePrivateKey();
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Storage::disk('ssh-keys')->put($filename, $staleContent);
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// Verify the stale content is there
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$this->assertEquals($staleContent, Storage::disk('ssh-keys')->get($filename));
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// Create a test server
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$server = Server::factory()->create([
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'private_key_id' => $privateKey->id,
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'team_id' => currentTeam()->id,
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]);
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// Trigger validation by generating SSH command
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try {
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$command = SshMultiplexingHelper::generateSshCommand($server, 'echo test', true);
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// File content should now be corrected
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$storedContent = Storage::disk('ssh-keys')->get($filename);
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$this->assertEquals($privateKey->private_key, $storedContent,
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'SSH key file should be updated with correct content from database');
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$this->assertNotEquals($staleContent, $storedContent,
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'SSH key file should no longer contain stale content');
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} catch (\Exception $e) {
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// Server validation might fail in test environment, but that's okay
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}
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}
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/**
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* Test that SSH key validation logs errors when file read fails
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*
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* @test
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*/
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public function it_handles_file_read_errors_gracefully()
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{
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Log::shouldReceive('error')->once()->withArgs(function ($message, $context) {
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return str_contains($message, 'Failed to read SSH key file') && isset($context['error']);
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});
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Log::shouldReceive('info')->once()->withArgs(function ($message, $context) {
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return str_contains($message, 'Re-storing SSH key to filesystem') && $context['reason'] === 'read_error';
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});
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$privateKey = PrivateKey::createAndStore([
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'name' => 'Test Key',
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'description' => 'Test for read error',
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'private_key' => $this->getValidPrivateKey(),
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'team_id' => currentTeam()->id,
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]);
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$filename = "ssh_key@{$privateKey->uuid}";
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// Mock Storage to throw exception on get()
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Storage::shouldReceive('disk')
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->with('ssh-keys')
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->andReturn(
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\Mockery::mock()
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->shouldReceive('exists')
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->with($filename)
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->andReturn(true)
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->shouldReceive('get')
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->with($filename)
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->andThrow(new \Exception('Permission denied'))
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->shouldReceive('put')
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->with($filename, \Mockery::any())
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->andReturn(true)
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->shouldReceive('exists')
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->with($filename)
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->andReturn(true)
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->shouldReceive('get')
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->with($filename)
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->andReturn($privateKey->private_key)
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->getMock()
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);
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$server = Server::factory()->create([
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'private_key_id' => $privateKey->id,
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'team_id' => currentTeam()->id,
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]);
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try {
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$command = SshMultiplexingHelper::generateSshCommand($server, 'echo test', true);
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} catch (\Exception $e) {
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// Expected in test environment
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}
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}
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/**
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* Test that validation doesn't unnecessarily rewrite when content is correct
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*
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* @test
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*/
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public function it_skips_rewrite_when_content_is_correct()
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{
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// Should NOT log any warnings or re-store messages
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Log::shouldReceive('warning')->never();
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Log::shouldReceive('info')->withArgs(function ($message) {
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return str_contains($message, 'Re-storing SSH key to filesystem');
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})->never();
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$privateKey = PrivateKey::createAndStore([
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'name' => 'Test Key',
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'description' => 'Test for correct content',
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'private_key' => $this->getValidPrivateKey(),
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'team_id' => currentTeam()->id,
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]);
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$filename = "ssh_key@{$privateKey->uuid}";
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Storage::disk('ssh-keys')->assertExists($filename);
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// Verify content is correct
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$storedContent = Storage::disk('ssh-keys')->get($filename);
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$this->assertEquals($privateKey->private_key, $storedContent);
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$server = Server::factory()->create([
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'private_key_id' => $privateKey->id,
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'team_id' => currentTeam()->id,
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]);
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try {
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// This should NOT trigger any re-store since content is correct
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$command = SshMultiplexingHelper::generateSshCommand($server, 'echo test', true);
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} catch (\Exception $e) {
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// Expected in test environment
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}
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// Content should still be the same (not rewritten)
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$finalContent = Storage::disk('ssh-keys')->get($filename);
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$this->assertEquals($privateKey->private_key, $finalContent);
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}
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}

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