wapmorgan\UnifiedArchive\PclZipInterface::extract()

Complexity

Conditions	36
Paths	15120

Size

Total Lines	178
Code Lines	95

Duplication

Lines	0
Ratio	0 %

Importance

Changes

0

<?php
    public function extract()
    {
        $options = func_get_args();
        //array_shift($options);

        // parse options
        if (isset($options[0]) && is_string($options[0])) {
            $options[PCLZIP_OPT_PATH] = $options[0];
            if (isset($options[1]) && is_string($options[1])) {
                $options[PCLZIP_OPT_REMOVE_PATH] = $options[1];
            }
        } else {
            $options = $this->makeKeyValueArrayFromList($options);
        }

        // filters initiation
        if (isset($options[PCLZIP_OPT_PATH]))
            $extractPath = rtrim($options[PCLZIP_OPT_PATH], '/');
        else $extractPath = rtrim(getcwd(), '/');

        $filters = $this->createFilters($options);
        list($preExtractCallback, $postExtractCallback) = $this->extractCallbacks($options, PCLZIP_CB_PRE_EXTRACT, PCLZIP_CB_POST_EXTRACT);
        $selectFilter = $this->createSelector($options);

        if (isset($options[PCLZIP_OPT_EXTRACT_AS_STRING]))
            $anotherOutputFormat = PCLZIP_OPT_EXTRACT_AS_STRING;
        else if (isset($options[PCLZIP_OPT_EXTRACT_IN_OUTPUT]))
            $anotherOutputFormat = PCLZIP_OPT_EXTRACT_IN_OUTPUT;
        else $anotherOutputFormat = false;

        if (isset($options[PCLZIP_OPT_REPLACE_NEWER]))
            $doNotReplaceNewer = false;
        else $doNotReplaceNewer = true;

        if (isset($options[PCLZIP_OPT_EXTRACT_DIR_RESTRICTION]))
            $restrictExtractDir = $options[PCLZIP_OPT_EXTRACT_DIR_RESTRICTION];
        else $restrictExtractDir = false;

        $report = array();
        foreach ($this->listContent() as $file_header) {
            $file_header = (object)$file_header;
            // add file information to report
            $report[] = $file_header;
            // refuse by select rule
            if (call_user_func($selectFilter, $file_header->stored_filename,
                    $file_header->filename, $file_header->index)
                === self::SELECT_FILTER_REFUSE) {
                //
                // I don't know need to remain this file in report or not,
                // but for now I remove
                array_pop($report);
                // $file_header->status = 'filtered';
                //
                continue;
            }

            //
            // add extract path in case of extraction
            // for some reason need to do it before call pre extract callback
            // (pclzip.lib.php v2.8.2, line 3670)
            // so I decided to do it here too
            //
            if ($anotherOutputFormat === false) {
                $file_header->filename = realpath($extractPath).'/'.
                    $file_header->filename;
                //
                // check for path correlation with restricted path
                //
                if ($restrictExtractDir !== false) {
                    $filename = $file_header->filename;
                    $restrictedDir = realpath($restrictExtractDir);
                    if (strncasecmp($restrictedDir, $filename,
                            strlen($restrictedDir)) !== 0) {
                        // refuse file extraction
                        $file_header->status = 'filtered';
                        continue;
                    }
                }
            }

            // apply pre extract callback
            $callback_result = call_user_func($preExtractCallback,
                $file_header);
            if ($callback_result == 1) {
                // go on ...
            } elseif ($callback_result == 0) {
                // skip current file
                $file_header->status = 'skipped';
                continue;
            } elseif ($callback_result == 2) {
                // skip & stop extraction
                $file_header->status = 'aborted';
                break;
            }

            // return content
            if ($anotherOutputFormat == PCLZIP_OPT_EXTRACT_AS_STRING) {
                $file_header->content
                    = $this->archive->getFileContent($file_header->stored_filename);
            }
            // echo content
            else if ($anotherOutputFormat == PCLZIP_OPT_EXTRACT_IN_OUTPUT) {
                echo $this->archive->getFileContent($file_header->stored_filename);
            }
            // extract content
            else if ($anotherOutputFormat === false) {
                // apply path filters
                foreach ($filters as $filter) call_user_func($filter,
                    $file_header->stored_filename, $file_header->filename);
                // dir extraction process
                if ($file_header->folder) {
                    // if dir doesn't exist
                    if (!is_dir($file_header->filename)) {
                        // try to create folder
                        if (!mkdir($file_header->filename)) {
                            $file_header->status = 'path_creation_fail';
                            continue;
                        }
                    }
                }
                // file extraction process
                else {
                    // check if path is already taken by a folder
                    if (is_dir($file_header->filename)) {
                        $file_header->status = 'already_a_directory';
                        continue;
                    }

                    // check if file exists and it's newer
                    if (is_file($file_header->filename)) {
                        if (filemtime($file_header->filename)
                            > $file_header->mtime) {
                            // skip extraction if option EXTRACT_NEWER isn't set
                            if ($doNotReplaceNewer) {
                                $file_header->status = 'newer_exist';
                                continue;
                            }
                        }
                    }
                    $directory = dirname($file_header->filename);
                    // check if running process can not create extraction folder
                    if (!is_dir($directory) && !mkdir($directory)) {
                            $file_header->status = 'path_creation_fail';
                            continue;
                    } else if (!is_writable($directory)) {
                        // check if file path is not writable
                        $file_header->status = 'write_protected';
                        continue;
                    }
                    // extraction
                    $stream = $this->archive->getFileStream($file_header->stored_filename);
                    if (file_put_contents($file_header->filename, $stream)) {
                        // ok
                    }
                    // extraction fails
                    else {
                        $file_header->status = 'write_error';
                        continue;
                    }
                }
            }

            // apply post extract callback
            $callback_result = call_user_func($postExtractCallback,
                $file_header);
            if ($callback_result == 1) {
                // go on
            } elseif ($callback_result == 2) {
                // skip & stop extraction
                break;
            }
        }

        foreach ($report as $i => $reportItem) {
            $report[$i] = (array)$reportItem;
        }

        return $report;
    }