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<?php class Meow_MWAI_Query_DroppedFile { private $data; private $rawData; private $type; // Defines what the data is about ('refId', 'url', or 'data') private $purpose; // 'analysis' or 'generated' private $mimeType; // 'image/jpeg' or any other mime type private $fileId; // The ID of the file in the database public $originalPath; // The original file path (for files loaded from disk) /** * Fetch content from a URL, handling internal vs external URLs differently. * Internal URLs (same site) use wp_remote_get to avoid SSRF blocking issues. * External URLs use wp_safe_remote_get for SSRF protection. */ private static function fetch_url_content( $url ) { $parts = wp_parse_url( $url ); if ( !isset( $parts['scheme'] ) || !in_array( $parts['scheme'], [ 'http', 'https' ], true ) ) { throw new Exception( 'Invalid URL scheme; only HTTP/HTTPS allowed.' ); } // Check if internal URL by comparing hostnames (handles http/https mismatch) $site_host = wp_parse_url( get_site_url(), PHP_URL_HOST ); $url_host = wp_parse_url( $url, PHP_URL_HOST ); $is_internal = ( $site_host === $url_host ); if ( $is_internal ) { $response = wp_remote_get( $url, [ 'timeout' => 60, 'sslverify' => false ] ); } else { // SSRF protection for external URLs $response = wp_safe_remote_get( $url, [ 'timeout' => 60, 'redirection' => 0 ] ); } if ( is_wp_error( $response ) ) { throw new Exception( 'AI Engine: Failed to download file: ' . $response->get_error_message() ); } $data = wp_remote_retrieve_body( $response ); if ( empty( $data ) ) { throw new Exception( 'AI Engine: Failed to download file contents from URL.' ); } return $data; } public static function from_url( $url, $purpose, $mimeType = null, $fileId = null ) { if ( empty( $mimeType ) ) { $mimeType = Meow_MWAI_Core::get_mime_type( $url ); } return new Meow_MWAI_Query_DroppedFile( $url, 'url', $purpose, $mimeType, $fileId ); } public static function from_data( $data, $purpose, $mimeType = null ) { return new Meow_MWAI_Query_DroppedFile( $data, 'data', $purpose, $mimeType ); } public static function from_path( $path, $purpose, $mimeType = null ) { // Sanitize path to prevent PHAR deserialization attacks $path = Meow_MWAI_Core::sanitize_file_path( $path ); $data = file_get_contents( $path ); if ( empty( $mimeType ) ) { $mimeType = Meow_MWAI_Core::get_mime_type( $path ); } $droppedFile = new Meow_MWAI_Query_DroppedFile( $data, 'data', $purpose, $mimeType ); // Store the original path for filename extraction $droppedFile->originalPath = $path; return $droppedFile; } public static function from_refId( $refId, $purpose, $mimeType = null ) { return new Meow_MWAI_Query_DroppedFile( $refId, 'refId', $purpose, $mimeType ); } /** * Create DroppedFile from provider file_id reference (OpenAI, Anthropic, etc.) * * For PDFs uploaded to provider Files APIs, we only store the file_id * Examples: OpenAI 'file-xxx', Anthropic 'file_xxx' * These are reference-only - the file data lives on the provider's servers * Do NOT try to load file data from these - use get_refId() to get the file_id */ public static function from_provider_file_id( $fileId, $purpose, $mimeType = null ) { return new Meow_MWAI_Query_DroppedFile( $fileId, 'provider_file_id', $purpose, $mimeType ); } public function __construct( $data, $type, $purpose, $mimeType = null, $fileId = null ) { if ( !empty( $type ) && $type !== 'refId' && $type !== 'url' && $type !== 'data' && $type !== 'provider_file_id' ) { throw new Exception( 'AI Engine: The file type can only be refId, url, data, or provider_file_id.' ); } if ( !empty( $purpose ) && $purpose !== 'analysis' && $purpose !== 'generated' ) { throw new Exception( 'AI Engine: The file purpose can only be analysis or generated.' ); } $this->data = $data; $this->type = $type; $this->purpose = $purpose; $this->mimeType = $mimeType; $this->fileId = $fileId; } public function get_url() { if ( $this->type === 'url' ) { return $this->data; } throw new Exception( 'AI Engine: The file is not an URL.' ); } private function get_raw_data() { if ( !empty( $this->rawData ) ) { return $this->rawData; } if ( $this->type === 'provider_file_id' ) { // Provider file IDs are reference-only (file data lives on provider's servers) // Common mistake: trying to load file data for PDFs in conversation history // Fix: Check file mime type before calling get_data()/get_base64()/get_inline_base64_url() // For PDFs: use get_refId() to get the file_id string instead throw new Exception( 'AI Engine: Cannot get raw data for provider file ID (file_id: ' . $this->data . '). Use get_refId() instead.' ); } if ( $this->type === 'refId' ) { global $mwai_core; // Prefer loading from disk to avoid HTTP rewrites or CDN issues $path = $mwai_core->files->get_path( $this->data ); if ( !empty( $path ) ) { $path = Meow_MWAI_Core::sanitize_file_path( $path ); if ( file_exists( $path ) && is_readable( $path ) ) { $data = file_get_contents( $path ); if ( $data === false ) { throw new Exception( 'AI Engine: Failed to read file contents for refId: ' . $this->data ); } $this->rawData = $data; return $this->rawData; } } // Fallback to the public URL if the local path is unavailable $url = $mwai_core->files->get_url( $this->data ); if ( empty( $url ) ) { throw new Exception( 'AI Engine: Could not find file URL for refId: ' . $this->data ); } $this->rawData = self::fetch_url_content( $url ); return $this->rawData; } else if ( $this->type === 'url' ) { // For internal URLs, try to read from disk first (more efficient) $site_host = wp_parse_url( get_site_url(), PHP_URL_HOST ); $url_host = wp_parse_url( $this->data, PHP_URL_HOST ); if ( $site_host === $url_host ) { $upload_dir = wp_upload_dir(); // Normalize protocols for comparison (http vs https) $normalized_url = preg_replace( '/^https?:/', '', $this->data ); $normalized_upload_url = preg_replace( '/^https?:/', '', $upload_dir['baseurl'] ); if ( strpos( $normalized_url, $normalized_upload_url ) === 0 ) { $local_path = str_replace( $normalized_upload_url, $upload_dir['basedir'], $normalized_url ); $local_path = Meow_MWAI_Core::sanitize_file_path( $local_path ); if ( file_exists( $local_path ) && is_readable( $local_path ) ) { $this->rawData = file_get_contents( $local_path ); if ( $this->rawData !== false ) { return $this->rawData; } } } } // Fetch via HTTP (handles internal vs external URLs with SSRF protection) $this->rawData = self::fetch_url_content( $this->data ); return $this->rawData; } else if ( $this->type === 'data' ) { return $this->data; } throw new Exception( 'AI Engine: The file is not data or an URL.' ); } public function get_data() { if ( $this->type === 'provider_file_id' ) { // Provider file IDs are just references, no data loading needed throw new Exception( 'AI Engine: Cannot get data for provider file ID. Use get_refId() instead.' ); } if ( $this->type === 'refId' || $this->type === 'url' ) { return $this->get_raw_data(); } else if ( $this->type === 'data' ) { return $this->data; } throw new Exception( 'AI Engine: The file is not data or an URL.' ); } public function get_base64() { $data = $this->get_raw_data(); return base64_encode( $data ); } // Will return something like "data:image/jpeg;base64,{data}" public function get_inline_base64_url() { $b64 = $this->get_base64(); return "data:{$this->mimeType};base64,{$b64}"; } public function get_type() { return $this->type; } public function get_purpose() { return $this->purpose; } public function get_mimeType() { return $this->mimeType; } public function is_image() { return strpos( $this->mimeType, 'image' ) !== false; } public function get_fileId() { return $this->fileId; } public function get_refId() { if ( $this->type === 'refId' || $this->type === 'provider_file_id' ) { return $this->data; } return null; } // Return a filename for this file. If the file is an URL, use the basename of // its path. If the file is raw data, generate a generic name based on the mime type. public function get_filename() { // If we have an original path (from from_path), use its basename if ( !empty( $this->originalPath ) ) { return basename( $this->originalPath ); } if ( $this->type === 'refId' ) { global $mwai_core; $path = $mwai_core->files->get_path( $this->data ); return basename( $path ); } if ( $this->type === 'url' ) { $path = parse_url( $this->data, PHP_URL_PATH ); return basename( $path ); } if ( $this->type === 'data' ) { if ( !empty( $this->mimeType ) ) { $parts = explode( '/', $this->mimeType ); $ext = end( $parts ); return 'file.' . $ext; } return 'file.bin'; } return 'file'; } }
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