error when loading ppt into reader

[barrychapman]

When opening a ppt file using the following:

    $path   = $this->attachment->prefix_path . $this->attachment->path . DS . $this->attachment->attachment;
    $doc    = \PhpOffice\PhpPresentation\IOFactory::createReader('PowerPoint97');
    $ppt    = $doc->load($path);

It errors no matter what with the following stacktrace:

Notice Error: Uninitialized string offset: 262837774 in [/data/web/wa/vendor/phpoffice/phppresentation/src/PhpPresentation/Reader/PowerPoint97.php, line 695]

2018-01-25 00:45:43 Notice: Notice (8): Uninitialized string offset: 262837774 in [/data/web/wa/vendor/phpoffice/phppresentation/src/PhpPresentation/Reader/PowerPoint97.php, line 695]
Trace:
Cake\Error\BaseErrorHandler::handleError() - CORE/src/Error/BaseErrorHandler.php, line 153
PhpOffice\PhpPresentation\Reader\PowerPoint97::getInt4d() - ROOT/vendor/phpoffice/phppresentation/src/PhpPresentation/Reader/PowerPoint97.php, line 695
PhpOffice\PhpPresentation\Reader\PowerPoint97::loadRecordHeader() - ROOT/vendor/phpoffice/phppresentation/src/PhpPresentation/Reader/PowerPoint97.php, line 643
PhpOffice\PhpPresentation\Reader\PowerPoint97::readRecordSlideSchemeColorSchemeAtom() - ROOT/vendor/phpoffice/phppresentation/src/PhpPresentation/Reader/PowerPoint97.php, line 2848
PhpOffice\PhpPresentation\Reader\PowerPoint97::readRecordSlideContainer() - ROOT/vendor/phpoffice/phppresentation/src/PhpPresentation/Reader/PowerPoint97.php, line 2744
PhpOffice\PhpPresentation\Reader\PowerPoint97::loadPowerpointDocumentStream() - ROOT/vendor/phpoffice/phppresentation/src/PhpPresentation/Reader/PowerPoint97.php, line 624
PhpOffice\PhpPresentation\Reader\PowerPoint97::loadFile() - ROOT/vendor/phpoffice/phppresentation/src/PhpPresentation/Reader/PowerPoint97.php, line 439
PhpOffice\PhpPresentation\Reader\PowerPoint97::load() - ROOT/vendor/phpoffice/phppresentation/src/PhpPresentation/Reader/PowerPoint97.php, line 418
App\Lib\Jobs\IndexAttachmentJob::parsePpt() - APP/Lib/Jobs/IndexAttachmentJob.php, line 177
App\Lib\Jobs\IndexAttachmentJob::perform() - APP/Lib/Jobs/IndexAttachmentJob.php, line 59

It seems to be something with the 32b integer is being read

[Progi1984]

@barrychapman Do you have a sample file for testing, please ?

[nchizhov]

Find in file PhpPresentation/Reader/PowerPoint97.php function:
private function readStructureTextCFRun(string $stream, int $pos, int $strLenRT): array {

Find in body:
if (1 == $masksData['bold'] || 1 == $masksData['italic'] || 1 == $masksData['underline'] || 1 == $masksData['shadow'] || 1 == $masksData['fehint'] || 1 == $masksData['kumi'] || 1 == $masksData['emboss'] || 1 == $masksData['fHasStyle']) {

And replace with:
if (1 == $masksData['bold'] || 1 == $masksData['italic'] || 1 == $masksData['underline'] || 1 == $masksData['shadow'] || 1 == $masksData['fehint'] || 1 == $masksData['kumi'] || 1 == $masksData['emboss'] || 1 <= $masksData['fHasStyle']) {