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<?php |
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|
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namespace FluentSupport\App\Hooks\Handlers; |
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|
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|
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use FluentSupport\App\Models\Attachment; |
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use FluentSupport\App\Models\Ticket; |
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use FluentSupport\App\Services\Helper; |
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use FluentSupport\Framework\Support\Arr; |
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|
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class ExternalPages |
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{ |
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public function route() |
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{ |
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// First verify nonce for security |
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if (!isset($_REQUEST['_wpnonce']) || !wp_verify_nonce(sanitize_text_field(wp_unslash($_REQUEST['_wpnonce'])), 'fluent-support')) { |
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wp_die(esc_html__('Security check failed. Please try again.', 'fluent-support'), 403); |
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return; |
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} |
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|
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// Then check permissions if user is logged in |
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if (!get_current_user_id()) { |
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wp_die(esc_html__('You do not have permission to access this page.', 'fluent-support'), 403); |
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return; |
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} |
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|
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$route = sanitize_text_field($_REQUEST['fs_view']); |
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|
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$methodMaps = [ |
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'ticket' => 'handleTicketView' |
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]; |
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|
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if (isset($methodMaps[$route])) { |
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$this->{$methodMaps[$route]}(); |
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} |
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|
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} |
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|
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public function handleTicketView() |
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{ |
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if (!Helper::isPublicSignedTicketEnabled()) { |
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$this->handleInvalidTicket(); |
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} else { |
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$this->handleValidTicket(); |
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} |
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} |
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|
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/** |
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* Display the attachment. |
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* |
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* Uses the new rewrite endpoint to get an attachment ID |
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* and display the attachment if the currently logged in user |
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* has the authorization to. |
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* |
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* @return void |
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* @since 3.2.0 |
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*/ |
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public function view_attachment() |
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{ |
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// First verify nonce for security |
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if (!isset($_REQUEST['_wpnonce']) || !wp_verify_nonce(sanitize_text_field(wp_unslash($_REQUEST['_wpnonce'])), 'fluent-support')) { |
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wp_die(esc_html__('Security check failed. Please try again.', 'fluent-support'), 403); |
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return; |
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} |
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|
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// Then check permissions if user is logged in |
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if (!get_current_user_id()) { |
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wp_die(esc_html__('You do not have permission to access this file.', 'fluent-support'), 403); |
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return; |
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} |
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|
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$attachmentHash = sanitize_text_field($_REQUEST['fst_file']); |
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|
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if (empty($attachmentHash)) { |
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die('Invalid Attachment Hash'); |
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} |
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|
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$attachment = $this->getAttachmentByHash($attachmentHash); |
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|
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if (!$attachment) { |
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die('Invalid Attachment Hash'); |
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} |
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|
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// check signature hash |
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if (!$this->validateAttachmentSignature($attachment)) { |
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$dieMessage = esc_html__('Sorry, Your secure sign is invalid, Please reload the previous page and get new signed url', 'fluent-support'); |
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die(esc_html($dieMessage)); // Escaping the die message again for safety |
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} |
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|
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//If external file |
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if ('local' !== $attachment->driver) { |
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if(!empty($attachment->full_url)){ |
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$this->redirectToExternalAttachment($attachment->full_url); |
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}else{ |
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die('File could not be found'); |
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} |
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} |
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|
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//Handle Local file |
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if (!file_exists($attachment->file_path)) { |
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die('File could not be found'); |
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} |
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$this->serveLocalAttachment($attachment); |
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} |
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|
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private function getAttachmentByHash($attachmentHash) |
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{ |
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return Attachment::where('file_hash', $attachmentHash)->first(); |
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} |
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|
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private function validateAttachmentSignature($attachment) |
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{ |
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// Sanitize and validate secure_sign input - don't trust any input |
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if (!isset($_REQUEST['secure_sign'])) { |
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return false; |
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} |
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|
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$secureSign = sanitize_text_field(wp_unslash($_REQUEST['secure_sign'])); |
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$sign = md5($attachment->id . date('YmdH')); |
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return $sign === $_REQUEST['secure_sign']; |
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// return hash_equals($sign, $secureSign); |
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} |
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|
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private function handleInvalidTicket() |
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{ |
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// Nonce already verified in route() method |
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// Validate and sanitize input - don't trust any input |
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$ticketId = absint(Arr::get($_REQUEST, 'ticket_id', 0)); |
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|
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if (!$ticketId) { |
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$this->showInvalidPortalMessage(); |
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return; |
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} |
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|
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$ticket = Ticket::where('id', $ticketId)->first(); |
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|
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if (!$ticket) { |
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$this->showInvalidPortalMessage(); |
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} else { |
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// Check permissions if user is logged in |
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if (!get_current_user_id()) { |
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wp_die(esc_html__('You do not have permission to access this ticket.', 'fluent-support'), 403); |
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return; |
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} |
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$this->redirectToTicketView($ticket); |
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} |
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} |
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|
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private function handleValidTicket() |
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{ |
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// Nonce already verified in route() method |
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// Validate and sanitize inputs - don't trust any input |
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$ticketHash = sanitize_text_field(Arr::get($_REQUEST, 'support_hash', '')); |
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$ticketId = absint(Arr::get($_REQUEST, 'ticket_id', 0)); |
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|
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if (empty($ticketHash) || !$ticketId) { |
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$this->showInvalidPortalMessage(); |
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return; |
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} |
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|
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$ticket = Ticket::where('hash', $ticketHash)->where('id', $ticketId)->first(); |
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|
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if (!$ticket) { |
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$this->showInvalidPortalMessage(); |
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} elseif (get_current_user_id()) { |
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$this->redirectToTicketView($ticket); |
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} |
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} |
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|
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private function showInvalidPortalMessage() |
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{ |
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echo '<h3 style="text-align: center; margin: 50px 0;">' . esc_html__('Invalid Support Portal URL', 'fluent-support') . '</h3>'; |
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die(); |
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} |
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|
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private function redirectToTicketView($ticket) |
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{ |
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$redirectUrl = Helper::getTicketViewUrl($ticket); |
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$this->redirectToExternalAttachment($redirectUrl); |
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} |
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|
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private function redirectToExternalAttachment($redirectUrl) |
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{ |
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wp_redirect($redirectUrl, 307); |
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exit(); |
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} |
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|
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// Helper method to serve an attachment |
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private function serveLocalAttachment($attachment) |
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{ |
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$file_path = realpath($attachment->file_path); |
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$uploads = wp_upload_dir(); |
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$uploads_dir = realpath($uploads['basedir']); // Ensures both paths are absolute |
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|
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if (!$file_path || !$uploads_dir || strpos($file_path, $uploads_dir) !== 0 || !file_exists($file_path)) { |
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wp_die(esc_html__('File not found or access denied', 'fluent-support'), 403); |
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return; |
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} |
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|
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ob_get_clean(); |
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$original_user_agent = ini_get('user_agent'); |
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ini_set('user_agent', 'Fluent Support/' . FLUENT_SUPPORT_VERSION . '; ' . esc_url(get_bloginfo('url'))); |
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|
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header("Content-Type: " . esc_attr($attachment->file_type)); |
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header("Content-Disposition: inline; filename=\"" . esc_attr($attachment->title) . "\""); |
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readfile($file_path); |
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ini_set('user_agent', $original_user_agent); |
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die(); |
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} |
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|
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} |
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|
