Example #1
0
/**
 * Unzip an uploaded zip file
 *
 * @param array $file           the $_FILES information
 * @param int   $container_guid the container to put the files/folders under
 * @param int   $parent_guid    the parrent folder
 *
 * @return bool
 */
function file_tools_unzip($file, $container_guid, $parent_guid = 0)
{
    $container_guid = (int) $container_guid;
    $parent_guid = (int) $parent_guid;
    if (empty($file) || empty($container_guid)) {
        return false;
    }
    $container_entity = get_entity($container_guid);
    if (empty($container_entity)) {
        return false;
    }
    $extracted = false;
    $allowed_extensions = file_tools_allowed_extensions();
    $zipfile = elgg_extract('tmp_name', $file);
    $access_id = get_input('access_id', false);
    if ($access_id === false) {
        $parent_folder = get_entity($parent_guid);
        if (elgg_instanceof($parent_folder, 'object', FILE_TOOLS_SUBTYPE)) {
            $access_id = $parent_folder->access_id;
        } else {
            if ($container_entity instanceof ElggGroup) {
                $access_id = $container_entity->group_acl;
            } else {
                $access_id = get_default_access($container_entity);
            }
        }
    }
    // open the zip file
    $zip = zip_open($zipfile);
    while ($zip_entry = zip_read($zip)) {
        // open the zip entry
        zip_entry_open($zip, $zip_entry);
        // set some variables
        $zip_entry_name = zip_entry_name($zip_entry);
        $filename = basename($zip_entry_name);
        // check for folder structure
        if (strlen($zip_entry_name) != strlen($filename)) {
            // there is a folder structure, check it and create missing items
            file_tools_create_folders($zip_entry, $container_guid, $parent_guid);
        }
        // extract the folder structure from the zip entry
        $folder_array = explode('/', $zip_entry_name);
        $parent = $parent_guid;
        foreach ($folder_array as $folder) {
            $folder = utf8_encode($folder);
            $entity = file_tools_check_foldertitle_exists($folder, $container_guid, $parent);
            if (!empty($entity)) {
                $parent = $entity->getGUID();
            } else {
                if ($folder !== end($folder_array)) {
                    continue;
                }
                $prefix = 'file/';
                $extension_array = explode('.', $folder);
                $file_extension = end($extension_array);
                if (!in_array(strtolower($file_extension), $allowed_extensions)) {
                    continue;
                }
                $buf = zip_entry_read($zip_entry, zip_entry_filesize($zip_entry));
                $filestorename = elgg_strtolower(time() . $folder);
                // create the file
                $filehandler = new ElggFile();
                $filehandler->setFilename($prefix . $filestorename);
                $filehandler->title = $folder;
                $filehandler->originalfilename = $folder;
                $filehandler->owner_guid = elgg_get_logged_in_user_guid();
                $filehandler->container_guid = $container_guid;
                $filehandler->access_id = $access_id;
                if (!$filehandler->save()) {
                    continue;
                }
                $filehandler->open('write');
                $filehandler->write($buf);
                $filehandler->close();
                $mime_type = $filehandler->detectMimeType($filehandler->getFilenameOnFilestore());
                // hack for Microsoft zipped formats
                $info = pathinfo($folder);
                $office_formats = ['docx', 'xlsx', 'pptx'];
                if ($mime_type == 'application/zip' && in_array($info['extension'], $office_formats)) {
                    switch ($info['extension']) {
                        case 'docx':
                            $mime_type = 'application/vnd.openxmlformats-officedocument.wordprocessingml.document';
                            break;
                        case 'xlsx':
                            $mime_type = 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet';
                            break;
                        case 'pptx':
                            $mime_type = 'application/vnd.openxmlformats-officedocument.presentationml.presentation';
                            break;
                    }
                }
                // check for bad ppt detection
                if ($mime_type == 'application/vnd.ms-office' && $info['extension'] == 'ppt') {
                    $mime_type = 'application/vnd.ms-powerpoint';
                }
                $simple_type = file_get_simple_type($mime_type);
                $filehandler->setMimeType($mime_type);
                $filehandler->simpletype = $simple_type;
                if ($simple_type == 'image') {
                    if ($filehandler->saveIconFromElggFile($filehandler)) {
                        $filehandler->thumbnail = $filehandler->getIcon('small')->getFilename();
                        $filehandler->smallthumb = $filehandler->getIcon('medium')->getFilename();
                        $filehandler->largethumb = $filehandler->getIcon('large')->getFilename();
                    }
                }
                set_input('folder_guid', $parent);
                $filehandler->save();
                $extracted = true;
                if (!empty($parent)) {
                    add_entity_relationship($parent, FILE_TOOLS_RELATIONSHIP, $filehandler->getGUID());
                }
            }
        }
        zip_entry_close($zip_entry);
    }
    zip_close($zip);
    return $extracted;
}
Example #2
0
/**
 * Unzip an uploaded zip file
 *
 * @param array $file           the $_FILES information
 * @param int   $container_guid the container to put the files/folders under
 * @param int   $parent_guid    the parrent folder
 *
 * @return bool
 */
function file_tools_unzip($file, $container_guid, $parent_guid = 0)
{
    $extracted = false;
    if (!empty($file) && !empty($container_guid)) {
        $allowed_extensions = file_tools_allowed_extensions();
        $zipfile = elgg_extract("tmp_name", $file);
        $container_entity = get_entity($container_guid);
        $access_id = get_input("access_id", false);
        if ($access_id === false) {
            if (!empty($parent_guid) && ($parent_folder = get_entity($parent_guid)) && elgg_instanceof($parent_folder, "object", FILE_TOOLS_SUBTYPE)) {
                $access_id = $parent_folder->access_id;
            } else {
                if (elgg_instanceof($container_entity, "group")) {
                    $access_id = $container_entity->group_acl;
                } else {
                    $access_id = get_default_access($container_entity);
                }
            }
        }
        // open the zip file
        $zip = zip_open($zipfile);
        while ($zip_entry = zip_read($zip)) {
            // open the zip entry
            zip_entry_open($zip, $zip_entry);
            // set some variables
            $zip_entry_name = zip_entry_name($zip_entry);
            $filename = basename($zip_entry_name);
            // check for folder structure
            if (strlen($zip_entry_name) != strlen($filename)) {
                // there is a folder structure, check it and create missing items
                file_tools_create_folders($zip_entry, $container_guid, $parent_guid);
            }
            // extract the folder structure from the zip entry
            $folder_array = explode("/", $zip_entry_name);
            $parent = $parent_guid;
            foreach ($folder_array as $folder) {
                $folder = utf8_encode($folder);
                if ($entity = file_tools_check_foldertitle_exists($folder, $container_guid, $parent)) {
                    $parent = $entity->getGUID();
                } else {
                    if ($folder == end($folder_array)) {
                        $prefix = "file/";
                        $extension_array = explode('.', $folder);
                        $file_extension = end($extension_array);
                        if (in_array(strtolower($file_extension), $allowed_extensions)) {
                            $buf = zip_entry_read($zip_entry, zip_entry_filesize($zip_entry));
                            // create the file
                            $filehandler = new ElggFile();
                            $filehandler->setFilename($prefix . $folder);
                            $filehandler->title = $folder;
                            $filehandler->originalfilename = $folder;
                            $filehandler->owner_guid = elgg_get_logged_in_user_guid();
                            $filehandler->container_guid = $container_guid;
                            $filehandler->access_id = $access_id;
                            $filehandler->open("write");
                            $filehandler->write($buf);
                            $filehandler->close();
                            $mime_type = $filehandler->detectMimeType($filehandler->getFilenameOnFilestore());
                            // hack for Microsoft zipped formats
                            $info = pathinfo($folder);
                            $office_formats = array("docx", "xlsx", "pptx");
                            if ($mime_type == "application/zip" && in_array($info["extension"], $office_formats)) {
                                switch ($info["extension"]) {
                                    case "docx":
                                        $mime_type = "application/vnd.openxmlformats-officedocument.wordprocessingml.document";
                                        break;
                                    case "xlsx":
                                        $mime_type = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
                                        break;
                                    case "pptx":
                                        $mime_type = "application/vnd.openxmlformats-officedocument.presentationml.presentation";
                                        break;
                                }
                            }
                            // check for bad ppt detection
                            if ($mime_type == "application/vnd.ms-office" && $info["extension"] == "ppt") {
                                $mime_type = "application/vnd.ms-powerpoint";
                            }
                            $simple_type = file_get_simple_type($mime_type);
                            $filehandler->setMimeType($mime_type);
                            $filehandler->simpletype = $simple_type;
                            if ($simple_type == "image") {
                                $filestorename = elgg_strtolower(time() . $folder);
                                $thumb = new ElggFile();
                                $thumb->owner_guid = elgg_get_logged_in_user_guid();
                                $thumbnail = get_resized_image_from_existing_file($filehandler->getFilenameOnFilestore(), 60, 60, true);
                                if ($thumbnail) {
                                    $thumb->setFilename($prefix . "thumb" . $filestorename);
                                    $thumb->open("write");
                                    $thumb->write($thumbnail);
                                    $thumb->close();
                                    $filehandler->thumbnail = $prefix . "thumb" . $filestorename;
                                    unset($thumbnail);
                                }
                                $thumbsmall = get_resized_image_from_existing_file($filehandler->getFilenameOnFilestore(), 153, 153, true);
                                if ($thumbsmall) {
                                    $thumb->setFilename($prefix . "smallthumb" . $filestorename);
                                    $thumb->open("write");
                                    $thumb->write($thumbsmall);
                                    $thumb->close();
                                    $filehandler->smallthumb = $prefix . "smallthumb" . $filestorename;
                                    unset($thumbsmall);
                                }
                                $thumblarge = get_resized_image_from_existing_file($filehandler->getFilenameOnFilestore(), 600, 600, false);
                                if ($thumblarge) {
                                    $thumb->setFilename($prefix . "largethumb" . $filestorename);
                                    $thumb->open("write");
                                    $thumb->write($thumblarge);
                                    $thumb->close();
                                    $filehandler->largethumb = $prefix . "largethumb" . $filestorename;
                                    unset($thumblarge);
                                }
                                unset($thumb);
                            }
                            set_input('folder_guid', $parent);
                            $filehandler->save();
                            $extracted = true;
                            if (!empty($parent)) {
                                add_entity_relationship($parent, FILE_TOOLS_RELATIONSHIP, $filehandler->getGUID());
                            }
                        }
                    }
                }
            }
            zip_entry_close($zip_entry);
        }
        zip_close($zip);
    }
    return $extracted;
}
Example #3
0
function file_tools_unzip($file, $container_guid, $parent_guid = 0)
{
    $extracted = false;
    if (!empty($file) && !empty($container_guid)) {
        $allowed_extensions = file_tools_allowed_extensions();
        $zipfile = elgg_extract("tmp_name", $file);
        $container_entity = get_entity($container_guid);
        $access_id = get_input("access_id", false);
        if ($access_id === false) {
            if (!empty($parent_guid) && ($parent_folder = get_entity($parent_guid)) && elgg_instanceof($parent_folder, "object", FILE_TOOLS_SUBTYPE)) {
                $access_id = $parent_folder->access_id;
            } else {
                if (elgg_instanceof($container_entity, "group")) {
                    $access_id = $container_entity->group_acl;
                } else {
                    $access_id = get_default_access($container_entity);
                }
            }
        }
        // open the zip file
        $zip = zip_open($zipfile);
        while ($zip_entry = zip_read($zip)) {
            // open the zip entry
            zip_entry_open($zip, $zip_entry);
            // set some variables
            $zip_entry_name = zip_entry_name($zip_entry);
            $filename = basename($zip_entry_name);
            // check for folder structure
            if (strlen($zip_entry_name) != strlen($filename)) {
                // there is a folder structure, check it and create missing items
                file_tools_create_folders($zip_entry, $container_guid, $parent_guid);
            }
            // extract the folder structure from the zip entry
            $folder_array = explode("/", $zip_entry_name);
            $parent = $parent_guid;
            foreach ($folder_array as $folder) {
                $folder = sanitize_string(utf8_encode($folder));
                if ($entity = file_tools_check_foldertitle_exists($folder, $container_guid, $parent)) {
                    $parent = $entity->getGUID();
                } else {
                    if ($folder == end($folder_array)) {
                        $prefix = "file/";
                        $extension_array = explode('.', $folder);
                        $file_extension = end($extension_array);
                        $file_size = zip_entry_filesize($zip_entry);
                        if (in_array(strtolower($file_extension), $allowed_extensions)) {
                            $buf = zip_entry_read($zip_entry, zip_entry_filesize($zip_entry));
                            // create the file
                            $filehandler = new ElggFile();
                            $filehandler->setFilename($prefix . $folder);
                            $filehandler->title = $folder;
                            $filehandler->originalfilename = $folder;
                            $filehandler->owner_guid = elgg_get_logged_in_user_guid();
                            $filehandler->container_guid = $container_guid;
                            $filehandler->access_id = $access_id;
                            $filehandler->open("write");
                            $filehandler->write($buf);
                            $filehandler->close();
                            $mime_type = mime_content_type($filehandler->getFilenameOnFilestore());
                            $simple_type = explode("/", $mime_type);
                            $filehandler->setMimeType($mime_type);
                            $filehandler->simpletype = $simple_type[0];
                            if ($simple_type[0] == "image") {
                                $filestorename = elgg_strtolower(time() . $folder);
                                $thumbnail = get_resized_image_from_existing_file($filehandler->getFilenameOnFilestore(), 60, 60, true);
                                if ($thumbnail) {
                                    $thumb = new ElggFile();
                                    $thumb->setMimeType($mime_type);
                                    $thumb->setFilename($prefix . "thumb" . $filestorename);
                                    $thumb->open("write");
                                    $thumb->write($thumbnail);
                                    $thumb->close();
                                    $filehandler->thumbnail = $prefix . "thumb" . $filestorename;
                                    unset($thumbnail);
                                }
                                $thumbsmall = get_resized_image_from_existing_file($filehandler->getFilenameOnFilestore(), 153, 153, true);
                                if ($thumbsmall) {
                                    $thumb->setFilename($prefix . "smallthumb" . $filestorename);
                                    $thumb->open("write");
                                    $thumb->write($thumbsmall);
                                    $thumb->close();
                                    $filehandler->smallthumb = $prefix . "smallthumb" . $filestorename;
                                    unset($thumbsmall);
                                }
                                $thumblarge = get_resized_image_from_existing_file($filehandler->getFilenameOnFilestore(), 600, 600, false);
                                if ($thumblarge) {
                                    $thumb->setFilename($prefix . "largethumb" . $filestorename);
                                    $thumb->open("write");
                                    $thumb->write($thumblarge);
                                    $thumb->close();
                                    $filehandler->largethumb = $prefix . "largethumb" . $filestorename;
                                    unset($thumblarge);
                                }
                            }
                            set_input('folder_guid', $parent);
                            $filehandler->save();
                            $extracted = true;
                            if (!empty($parent)) {
                                add_entity_relationship($parent, FILE_TOOLS_RELATIONSHIP, $filehandler->getGUID());
                            }
                        }
                    }
                }
            }
            zip_entry_close($zip_entry);
        }
        zip_close($zip);
    }
    return $extracted;
}