image.php
2 weeks ago
message-builder.php
3 weeks ago
model-environment.php
7 months ago
response-id-manager.php
3 months ago
session.php
11 months ago
usage-stats.php
1 month ago
image.php
261 lines
| 1 | <?php |
| 2 | |
| 3 | class Meow_MWAI_Services_Image { |
| 4 | private $core; |
| 5 | |
| 6 | public function __construct( $core ) { |
| 7 | $this->core = $core; |
| 8 | } |
| 9 | |
| 10 | public function is_image( $mimeType ) { |
| 11 | return strpos( $mimeType, 'image/' ) === 0; |
| 12 | } |
| 13 | |
| 14 | public function get_image_resolution( $imageData ) { |
| 15 | try { |
| 16 | $tempFile = tmpfile(); |
| 17 | $tempFilePath = stream_get_meta_data( $tempFile )['uri']; |
| 18 | fwrite( $tempFile, $imageData ); |
| 19 | $imageSize = getimagesize( $tempFilePath ); |
| 20 | fclose( $tempFile ); |
| 21 | if ( $imageSize !== false ) { |
| 22 | return $imageSize[0] . 'x' . $imageSize[1]; |
| 23 | } |
| 24 | } |
| 25 | catch ( Exception $e ) { |
| 26 | throw new Exception( 'Failed to get image resolution.' ); |
| 27 | } |
| 28 | return null; |
| 29 | } |
| 30 | |
| 31 | public function get_mime_type( $file, $fileData = null ) { |
| 32 | $mimeType = null; |
| 33 | |
| 34 | // If we have file data, let's use it |
| 35 | if ( !empty( $fileData ) ) { |
| 36 | $f = finfo_open(); |
| 37 | $mimeType = finfo_buffer( $f, $fileData, FILEINFO_MIME_TYPE ); |
| 38 | } |
| 39 | |
| 40 | // Try to use mime_content_type for local files |
| 41 | if ( !$mimeType ) { |
| 42 | $isUrl = filter_var( $file, FILTER_VALIDATE_URL ); |
| 43 | if ( !$isUrl && function_exists( 'mime_content_type' ) ) { |
| 44 | try { |
| 45 | // Sanitize file path to prevent PHAR deserialization attacks |
| 46 | $sanitized_file = Meow_MWAI_Core::sanitize_file_path( $file ); |
| 47 | if ( file_exists( $sanitized_file ) ) { |
| 48 | $mimeType = mime_content_type( $sanitized_file ); |
| 49 | } |
| 50 | } |
| 51 | catch ( Exception $e ) { |
| 52 | // If sanitization fails, fall through to extension-based detection |
| 53 | Meow_MWAI_Logging::warn( 'File path sanitization failed: ' . $e->getMessage() ); |
| 54 | } |
| 55 | } |
| 56 | } |
| 57 | |
| 58 | // Otherwise, let's check the file extension (which can actually also be an URL) |
| 59 | if ( !$mimeType ) { |
| 60 | $extension = pathinfo( $file, PATHINFO_EXTENSION ); |
| 61 | $extension = strtolower( $extension ); |
| 62 | $mimeTypes = [ |
| 63 | 'jpg' => 'image/jpeg', |
| 64 | 'jpeg' => 'image/jpeg', |
| 65 | 'png' => 'image/png', |
| 66 | 'gif' => 'image/gif', |
| 67 | 'webp' => 'image/webp', |
| 68 | 'bmp' => 'image/bmp', |
| 69 | 'tiff' => 'image/tiff', |
| 70 | 'tif' => 'image/tiff', |
| 71 | 'svg' => 'image/svg+xml', |
| 72 | 'ico' => 'image/x-icon', |
| 73 | 'pdf' => 'application/pdf', |
| 74 | ]; |
| 75 | $mimeType = isset( $mimeTypes[$extension] ) ? $mimeTypes[$extension] : null; |
| 76 | } |
| 77 | |
| 78 | return $mimeType; |
| 79 | } |
| 80 | |
| 81 | public function download_image( $url ) { |
| 82 | // Handle data URLs (base64-encoded images from Google Gemini, etc.) |
| 83 | if ( strpos( $url, 'data:' ) === 0 ) { |
| 84 | // Extract base64 data from data URL |
| 85 | // Format: data:image/png;base64,iVBORw0KGgoAAAANS... |
| 86 | $parts = explode( ',', $url, 2 ); |
| 87 | if ( count( $parts ) !== 2 ) { |
| 88 | throw new Exception( 'Invalid data URL format.' ); |
| 89 | } |
| 90 | |
| 91 | // Validate it's an image data URL |
| 92 | if ( stripos( $parts[0], 'image/' ) === false ) { |
| 93 | throw new Exception( 'Data URL is not an image.' ); |
| 94 | } |
| 95 | |
| 96 | // Decode base64 data |
| 97 | $image_data = base64_decode( $parts[1] ); |
| 98 | if ( $image_data === false ) { |
| 99 | throw new Exception( 'Failed to decode base64 image data.' ); |
| 100 | } |
| 101 | |
| 102 | return $image_data; |
| 103 | } |
| 104 | |
| 105 | // Validate URL scheme (only allow http/https) |
| 106 | $parsed_url = parse_url( $url ); |
| 107 | if ( empty( $parsed_url['scheme'] ) || !in_array( $parsed_url['scheme'], [ 'http', 'https' ] ) ) { |
| 108 | throw new Exception( 'Invalid URL scheme. Only HTTP and HTTPS are allowed.' ); |
| 109 | } |
| 110 | |
| 111 | // Check against banned IPs to prevent SSRF attacks |
| 112 | $host = $parsed_url['host'] ?? ''; |
| 113 | if ( empty( $host ) ) { |
| 114 | throw new Exception( 'Invalid URL: no host specified.' ); |
| 115 | } |
| 116 | |
| 117 | // Resolve hostname to IP |
| 118 | $ip = gethostbyname( $host ); |
| 119 | |
| 120 | // Check if the resolved IP is in the banned IPs list |
| 121 | $banned_ips = $this->core->get_option( 'banned_ips' ); |
| 122 | if ( !empty( $banned_ips ) && !empty( $this->core->security ) ) { |
| 123 | if ( $this->core->security->is_blocked_ip( $ip, $banned_ips ) ) { |
| 124 | throw new Exception( 'Access to this IP address is not allowed.' ); |
| 125 | } |
| 126 | } |
| 127 | |
| 128 | // Disable redirects to prevent bypass attacks |
| 129 | $response = wp_safe_remote_get( $url, [ |
| 130 | 'timeout' => 60, |
| 131 | 'redirection' => 0 // Prevent redirect-based bypass |
| 132 | ] ); |
| 133 | |
| 134 | if ( is_wp_error( $response ) ) { |
| 135 | throw new Exception( $response->get_error_message() ); |
| 136 | } |
| 137 | |
| 138 | // Validate response is actually an image |
| 139 | $content_type = wp_remote_retrieve_header( $response, 'content-type' ); |
| 140 | if ( empty( $content_type ) || stripos( $content_type, 'image/' ) !== 0 ) { |
| 141 | throw new Exception( 'URL did not return an image. Content-Type: ' . $content_type ); |
| 142 | } |
| 143 | |
| 144 | return wp_remote_retrieve_body( $response ); |
| 145 | } |
| 146 | |
| 147 | /** |
| 148 | * Add an image from a URL to the Media Library. |
| 149 | * @param string $url The URL of the image to be downloaded. |
| 150 | * @param string $filename The filename of the image, if not set, it will be the basename of the URL. |
| 151 | * @param string $title The title of the image. |
| 152 | * @param string $description The description of the image. |
| 153 | * @param string $caption The caption of the image. |
| 154 | * @param string $alt The alt text of the image. |
| 155 | * @param array $ai_metadata AI-related metadata (model, latency, env_id). |
| 156 | * @return int The attachment ID of the image. |
| 157 | */ |
| 158 | public function add_image_from_url( $url, $filename = null, $title = null, $description = null, $caption = null, $alt = null, $attachedPost = null, $post_status = 'inherit', $post_type = 'attachment', $ai_metadata = [] ) { |
| 159 | $path_parts = pathinfo( parse_url( $url, PHP_URL_PATH ) ); |
| 160 | $url_filename = $path_parts['basename']; |
| 161 | $file_type = wp_check_filetype( $url_filename, null ); |
| 162 | $allowed_types = get_allowed_mime_types(); |
| 163 | |
| 164 | // For URLs without file extensions (like Google Gemini), default to PNG |
| 165 | $extension = 'png'; |
| 166 | if ( $file_type && $file_type['ext'] && in_array( $file_type['type'], $allowed_types ) ) { |
| 167 | $extension = $file_type['ext']; |
| 168 | } |
| 169 | |
| 170 | if ( !empty( $filename ) ) { |
| 171 | $custom_file_type = wp_check_filetype( $filename, null ); |
| 172 | if ( !$custom_file_type || !in_array( $custom_file_type['type'], $allowed_types ) ) { |
| 173 | throw new Exception( 'Invalid custom file type.' ); |
| 174 | } |
| 175 | // Use the extension from the custom filename if valid |
| 176 | $extension = $custom_file_type['ext']; |
| 177 | // Strip any directory components so a crafted filename (e.g. |
| 178 | // "../../../evil.png") cannot escape the uploads directory. The |
| 179 | // empty-filename branch below already sanitizes; this mirrors the |
| 180 | // hardening applied to the media-rename handler (CVE-2026-1400). |
| 181 | $filename = sanitize_file_name( basename( $filename ) ); |
| 182 | } |
| 183 | |
| 184 | $image_data = $this->download_image( $url ); |
| 185 | if ( !$image_data ) { |
| 186 | throw new Exception( 'Could not download the image.' ); |
| 187 | } |
| 188 | $upload_dir = wp_upload_dir(); |
| 189 | |
| 190 | // Filename handling including 'generated_' prefix scenario |
| 191 | if ( empty( $filename ) ) { |
| 192 | $filename = sanitize_file_name( $url_filename ); |
| 193 | if ( empty( $extension ) ) { // This condition might now be redundant |
| 194 | $extension = $file_type['ext']; |
| 195 | } |
| 196 | // Filename length check and prepend if conditions met |
| 197 | if ( strlen( $filename ) > 32 || strlen( $filename ) < 4 || strpos( $filename, 'generated_' ) === 0 ) { |
| 198 | $filename = uniqid( 'ai_', true ) . '.' . $extension; |
| 199 | } |
| 200 | if ( strpos( $filename, '.' ) === false ) { |
| 201 | $filename .= '.' . $extension; |
| 202 | } |
| 203 | } |
| 204 | |
| 205 | // Directory and file path handling |
| 206 | if ( wp_mkdir_p( $upload_dir['path'] ) ) { |
| 207 | $file = $upload_dir['path'] . '/' . $filename; |
| 208 | } |
| 209 | else { |
| 210 | $file = $upload_dir['basedir'] . '/' . $filename; |
| 211 | } |
| 212 | |
| 213 | // Ensure file name uniqueness in the directory |
| 214 | $i = 1; |
| 215 | $parts = pathinfo( $file ); |
| 216 | while ( file_exists( $file ) ) { |
| 217 | $file = $parts['dirname'] . '/' . $parts['filename'] . '-' . $i . '.' . $parts['extension']; |
| 218 | $i++; |
| 219 | } |
| 220 | |
| 221 | // Write file to filesystem |
| 222 | file_put_contents( $file, $image_data ); |
| 223 | |
| 224 | // Prepare and insert attachment |
| 225 | $wp_filetype = wp_check_filetype( basename( $file ), null ); |
| 226 | $attachment = [ |
| 227 | 'post_mime_type' => $wp_filetype['type'], |
| 228 | 'post_title' => !is_null( $title ) ? $title : preg_replace( '/\.[^.]+$/', '', basename( $file ) ), |
| 229 | 'post_content' => !is_null( $description ) ? $description : '', |
| 230 | 'post_status' => $post_status, |
| 231 | 'post_excerpt' => !is_null( $caption ) ? $caption : '', |
| 232 | 'post_type' => $post_type, |
| 233 | ]; |
| 234 | |
| 235 | // Use wp_insert_post instead of wp_insert_attachment to allow custom post types |
| 236 | $attach_id = wp_insert_post( $attachment ); |
| 237 | |
| 238 | // Set the attached file manually since we're not using wp_insert_attachment |
| 239 | update_attached_file( $attach_id, $file ); |
| 240 | require_once( ABSPATH . 'wp-admin/includes/image.php' ); |
| 241 | $attach_data = wp_generate_attachment_metadata( $attach_id, $file ); |
| 242 | wp_update_attachment_metadata( $attach_id, $attach_data ); |
| 243 | if ( !is_null( $alt ) ) { |
| 244 | update_post_meta( $attach_id, '_wp_attachment_image_alt', $alt ); |
| 245 | } |
| 246 | |
| 247 | // Store AI-related metadata |
| 248 | if ( !empty( $ai_metadata['model'] ) ) { |
| 249 | update_post_meta( $attach_id, 'mwai_model', sanitize_text_field( $ai_metadata['model'] ) ); |
| 250 | } |
| 251 | if ( !empty( $ai_metadata['latency'] ) ) { |
| 252 | update_post_meta( $attach_id, 'mwai_latency', floatval( $ai_metadata['latency'] ) ); |
| 253 | } |
| 254 | if ( !empty( $ai_metadata['env_id'] ) ) { |
| 255 | update_post_meta( $attach_id, 'mwai_env_id', sanitize_text_field( $ai_metadata['env_id'] ) ); |
| 256 | } |
| 257 | |
| 258 | return $attach_id; |
| 259 | } |
| 260 | } |
| 261 |