debug_ftp_connection.php

<?php
error_reporting( E_ALL );
ini_set( 'display_errors', 1 );
require_once '../wp-load.php';
require_once ABSPATH . 'wp-admin/includes/file.php';

function debug_ftp_connection() {
	global $wp_filesystem;

	echo '<h2>WordPress Filesystem Configuration</h2>';

	echo '<p>FS_METHOD constant: ' . ( defined( 'FS_METHOD' ) ? FS_METHOD : 'Not defined' ) . '</p>';

	echo '<p>FTP_BASE constant: ' . ( defined( 'FTP_BASE' ) ? FTP_BASE : 'Not defined' ) . '</p>';
	echo '<p>FTP_CONTENT_DIR constant: ' . ( defined( 'FTP_CONTENT_DIR' ) ? FTP_CONTENT_DIR : 'Not defined' ) . '</p>';
	echo '<p>FTP_PLUGIN_DIR constant: ' . ( defined( 'FTP_PLUGIN_DIR' ) ? FTP_PLUGIN_DIR : 'Not defined' ) . '</p>';
	echo '<p>FTP_HOST constant: ' . ( defined( 'FTP_HOST' ) ? FTP_HOST : 'Not defined' ) . '</p>';
	echo '<p>FTP_USER constant: ' . ( defined( 'FTP_USER' ) ? FTP_USER : 'Not defined' ) . '</p>';

	if ( ! isset( $wp_filesystem ) ) {
		echo '<p>Attempting to initialize filesystem...</p>';

		$ftp_options = array(
			'hostname' => defined( 'FTP_HOST' ) ? FTP_HOST : '',
			'username' => defined( 'FTP_USER' ) ? FTP_USER : '',
			'password' => defined( 'FTP_PASS' ) ? FTP_PASS : '',
			'port'     => 21,
			'ssl'      => defined( 'FTP_SSL' ) ? FTP_SSL : false,
			'timeout'  => 30,
		);

		echo '<p>FTP Options being passed:</p>';
		echo '<pre>';
		print_r( $ftp_options );
		echo '</pre>';

		if ( ! WP_Filesystem( $ftp_options ) ) {
			echo '<p>Failed to initialize filesystem. Error: ' . $wp_filesystem->errors->get_error_message() . '</p>';
		} else {
			echo '<p>Successfully initialized filesystem</p>';
		}
	}

	echo '<h2>FTP Connection Debug Information</h2>';

	if ( isset( $wp_filesystem ) && is_object( $wp_filesystem ) ) {
		echo '<p>Filesystem Method: ' . get_class( $wp_filesystem ) . '</p>';

		echo '<h3>Basic Filesystem Tests:</h3>';

		try {
			$cwd = $wp_filesystem->cwd();
			echo '<p>Current Working Directory: ' . ( $cwd ? $cwd : 'Could not determine' ) . '</p>';

			echo '<p>Attempting to list root directory contents:</p>';
			$root_files = $wp_filesystem->dirlist( '/' );
			if ( is_array( $root_files ) ) {
				echo '<pre>';
				print_r( $root_files['wp-includes'] );
				echo '</pre>';
			} else {
				echo '<p>Could not list root directory contents</p>';
			}

			echo '<p>Attempting to list src directory contents:</p>';
			$includes_files = $wp_filesystem->dirlist( 'wp-includes' );
			if ( is_array( $includes_files ) ) {
				echo '<pre>';
				print_r( $includes_files['version.php'] );
				echo '</pre>';
			} else {
				echo '<p>Could not list src directory contents</p>';
			}

			echo '<p>Attempting to list wp-admin directory contents:</p>';
			$wp_admin_files = $wp_filesystem->dirlist( 'src/wp-admin' );
			if ( is_array( $wp_admin_files ) ) {
				echo '<pre>';
				print_r( $wp_admin_files );
				echo '</pre>';
			} else {
				echo '<p>Could not list wp-admin directory contents</p>';
			}
		} catch ( Exception $e ) {
			echo '<p>Error with directory operations: ' . $e->getMessage() . '</p>';
		}

		$test_dirs = array(
			'wp-admin',
			'wp-admin/includes',
			'wp-content',
			'wp-content/plugins',
		);

		echo '<h3>Directory Tests (with relative paths):</h3>';
		foreach ( $test_dirs as $dir ) {
			echo '<p>Testing directory: ' . $dir . '</p>';
			echo '<ul>';
			try {
				echo '<li>Exists: ' . ( $wp_filesystem->exists( $dir ) ? 'Yes' : 'No' ) . '</li>';
				echo '<li>Is Directory: ' . ( $wp_filesystem->is_dir( $dir ) ? 'Yes' : 'No' ) . '</li>';
				echo '<li>Is Writable: ' . ( $wp_filesystem->is_writable( $dir ) ? 'Yes' : 'No' ) . '</li>';

				$files = $wp_filesystem->dirlist( $dir );
				echo '<li>Directory Contents: ' . ( is_array( $files ) ? count( $files ) . ' items' : 'Could not list contents' ) . '</li>';

			} catch ( Exception $e ) {
				echo '<li>Error testing directory: ' . $e->getMessage() . '</li>';
			}
			echo '</ul>';
		}

		// Test with very long paths.
		echo '<h3>File Write Test:</h3>';
		$test_file = 'wp-content/upgrades/wordpress-abcdefghijklmnopqrstuvwxyz/wordpress/wp-includes/test-write.txt';
		try {
			echo '<p>Attempting to write to: ' . $test_file . '</p>';

			$dir = dirname( $test_file );
			echo '<p>Directory exists: ' . ( $wp_filesystem->exists( $dir ) ? 'Yes' : 'No' ) . '</p>';
			echo '<p>Directory is writable: ' . ( $wp_filesystem->is_writable( $dir ) ? 'Yes' : 'No' ) . '</p>';

			if ( ! $wp_filesystem->exists( $dir ) ) {
				echo '<p>Attempting to create directory: ' . $dir . '</p>';

				$dir_parts    = explode( '/', $dir );
				$current_path = '';

				foreach ( $dir_parts as $part ) {
					if ( empty( $part ) ) {
						continue;
					}

					$current_path .= ( empty( $current_path ) ? '' : '/' ) . $part;
					echo '<p>Attempting to create directory: ' . $current_path . '</p>';

					if ( $wp_filesystem->exists( $current_path ) ) {
						echo '<p>Directory already exists: ' . $current_path . '</p>';
						continue;
					}

					$mkdir_result = $wp_filesystem->mkdir( $current_path, 0755 );
					echo '<p>Create directory result for ' . $current_path . ': ' . ( $mkdir_result ? 'Success' : 'Failed' ) . '</p>';

					if ( ! $mkdir_result ) {
						if ( isset( $wp_filesystem->link ) ) {
							echo '<p>FTP Connection Status: Connected</p>';
							echo '<p>FTP System Type: ' . ftp_systype( $wp_filesystem->link ) . '</p>';
							echo '<p>FTP Features: ' . implode( ', ', ftp_raw( $wp_filesystem->link, 'FEAT' ) ) . '</p>';
							echo '<p>Current Working Directory: ' . $wp_filesystem->cwd() . '</p>';

							$current_files = $wp_filesystem->dirlist( dirname( $current_path ) );
							echo '<p>Contents of parent directory:</p>';
							echo '<pre>';
							print_r( $current_files );
							echo '</pre>';
						} else {
							echo '<p>FTP Connection Status: Not Connected</p>';
						}

						if ( isset( $wp_filesystem->errors ) && $wp_filesystem->errors->has_errors() ) {
							echo '<p>Filesystem Errors:</p>';
							echo '<pre>';
							print_r( $wp_filesystem->errors->get_error_messages() );
							echo '</pre>';
						}

						break;
					}
				}
			}

			$write_result = $wp_filesystem->put_contents( $test_file, 'test' );
			echo '<p>Write Test: ' . ( $write_result ? 'Success' : 'Failed' ) . '</p>';
			echo '<p> File Exists: ' . ( $wp_filesystem->exists( $test_file ) ? 'Yes' : 'No' ) . '</p>';

			if ( ! $write_result ) {
				echo '<p>Write Error Details:</p>';
				if ( isset( $wp_filesystem->errors ) ) {
					echo '<pre>';
					print_r( $wp_filesystem->errors->get_error_messages() );
					echo '</pre>';
				}

				if ( isset( $wp_filesystem->link ) ) {
					echo '<p>FTP Connection Status: Connected</p>';
					echo '<p>FTP System Type: ' . ftp_systype( $wp_filesystem->link ) . '</p>';
					echo '<p>FTP Features: ' . implode( ', ', ftp_raw( $wp_filesystem->link, 'FEAT' ) ) . '</p>';
					echo '<p>Current Working Directory: ' . $wp_filesystem->cwd() . '</p>';

					$target_files = $wp_filesystem->dirlist( dirname( $test_file ) );
					echo '<p>Contents of target directory:</p>';
					echo '<pre>';
					print_r( $target_files );
					echo '</pre>';
				} else {
					echo '<p>FTP Connection Status: Not Connected</p>';
				}
			}

			if ( $write_result ) {
				$read_result = $wp_filesystem->get_contents( $test_file );
				echo '<p>Read Test: ' . ( 'test' === $read_result ? 'Success' : 'Failed' ) . '</p>';

				$delete_result = $wp_filesystem->delete( $test_file, false, 'f' );
				echo '<p>Delete Test: ' . ( $delete_result ? 'Success' : 'Failed' ) . '</p>';
			}
		} catch ( Exception $e ) {
			echo '<p>File Operation Error: ' . $e->getMessage() . '</p>';
			echo '<p>Stack trace:</p>';
			echo '<pre>' . $e->getTraceAsString() . '</pre>';
		}

		if ( isset( $wp_filesystem->errors ) && $wp_filesystem->errors->has_errors() ) {
			echo '<h3>Filesystem Errors:</h3>';
			echo '<pre>';
			print_r( $wp_filesystem->errors->get_error_messages() );
			echo '</pre>';
		}
	} else {
		echo '<p>Filesystem object not properly initialized</p>';
	}

	echo '<h2>PHP Information</h2>';
	echo '<p>PHP Version: ' . phpversion() . '</p>';
	echo '<p>FTP Extension Loaded: ' . ( extension_loaded( 'ftp' ) ? 'Yes' : 'No' ) . '</p>';
	echo '<h2>WordPress Information</h2>';
	echo '<p>WordPress Version: ' . get_bloginfo( 'version' ) . '</p>';
	echo '<p>ABSPATH: ' . ABSPATH . '</p>';
	echo '<p>WP_CONTENT_DIR: ' . WP_CONTENT_DIR . '</p>';
}

debug_ftp_connection();