Reopened: I cant sign TCPDF_PARSER ERROR: decodeFilterFlateDecode

[Bolli84]

Reopened: from #814 but the error appears only on already signed (outside of libresign) files. On fresh and new files, it is ok.
The issue is visible with the working or broken preview box for the signature.

Nextcloud 25.0.2
Libresign 6.2.5

When tryining to open the visual signature field, it is the symbol for broken files and the error "TCPDF_PARSER ERROR: decodeFilterFlateDecode" appears in the logfiles

When signing anyway, the following error is written into the log:

[libresign] Error: [{"file":"\/var\/www\/vhosts\/SERVER-HOST\/apps\/libresign\/vendor\/tecnickcom\/tcpdf\/include\/tcpdf_filters.php","line":359,"function":"Error","class":"TCPDF_FILTERS","type":"::"},{"file":"\/var\/www\/vhosts\/SERVER-HOST\/apps\/libresign\/vendor\/tecnickcom\/tcpdf\/include\/tcpdf_filters.php","line":94,"function":"decodeFilterFlateDecode","class":"TCPDF_FILTERS","type":"::"},{"file":"\/var\/www\/vhosts\/SERVER-HOST\/apps\/libresign\/vendor\/libresign\/tcpdi_parser\/src\/tcpdi_parser.php","line":1170,"function":"decodeFilter","class":"TCPDF_FILTERS","type":"::"},{"file":"\/var\/www\/vhosts\/SERVER-HOST\/apps\/libresign\/vendor\/libresign\/tcpdi_parser\/src\/tcpdi_parser.php","line":1058,"function":"decodeStream","class":"LibreSign\\TcpdiParser\\tcpdi_parser","type":"->"},{"file":"\/var\/www\/vhosts\/SERVER-HOST\/apps\/libresign\/vendor\/libresign\/tcpdi_parser\/src\/tcpdi_parser.php","line":1094,"function":"extractObjectStream","class":"LibreSign\\TcpdiParser\\tcpdi_parser","type":"->"},{"file":"\/var\/www\/vhosts\/SERVER-HOST\/apps\/libresign\/vendor\/libresign\/tcpdi_parser\/src\/tcpdi_parser.php","line":198,"function":"findObjectOffsets","class":"LibreSign\\TcpdiParser\\tcpdi_parser","type":"->"},{"file":"\/var\/www\/vhosts\/SERVER-HOST\/apps\/libresign\/vendor\/iio\/libmergepdf\/tcpdi\/tcpdi.php","line":124,"function":"__construct","class":"LibreSign\\TcpdiParser\\tcpdi_parser","type":"->"},{"file":"\/var\/www\/vhosts\/SERVER-HOST\/apps\/libresign\/lib\/Handler\/Pkcs12Handler.php","line":150,"function":"setSourceData","class":"TCPDI","type":"->"},{"file":"\/var\/www\/vhosts\/SERVER-HOST\/apps\/libresign\/lib\/Service\/SignFileService.php","line":790,"function":"writeFooter","class":"OCA\\Libresign\\Handler\\Pkcs12Handler","type":"->"},{"file":"\/var\/www\/vhosts\/SERVER-HOST\/apps\/libresign\/lib\/Service\/SignFileService.php","line":674,"function":"getPdfToSign","class":"OCA\\Libresign\\Service\\SignFileService","type":"->"},{"file":"\/var\/www\/vhosts\/SERVER-HOST\/apps\/libresign\/lib\/Service\/SignFileService.php","line":597,"function":"getFileToSing","class":"OCA\\Libresign\\Service\\SignFileService","type":"->"},{"file":"\/var\/www\/vhosts\/SERVER-HOST\/apps\/libresign\/lib\/Controller\/SignFileController.php","line":202,"function":"sign","class":"OCA\\Libresign\\Service\\SignFileService","type":"->"},{"file":"\/var\/www\/vhosts\/SERVER-HOST\/apps\/libresign\/lib\/Controller\/SignFileController.php","line":180,"function":"sign","class":"OCA\\Libresign\\Controller\\SignFileController","type":"->"},{"file":"\/var\/www\/vhosts\/SERVER-HOST\/lib\/private\/AppFramework\/Http\/Dispatcher.php","line":225,"function":"signUsingUuid","class":"OCA\\Libresign\\Controller\\SignFileController","type":"->"},{"file":"\/var\/www\/vhosts\/SERVER-HOST\/lib\/private\/AppFramework\/Http\/Dispatcher.php","line":133,"function":"executeController","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->"},{"file":"\/var\/www\/vhosts\/SERVER-HOST\/lib\/private\/AppFramework\/App.php","line":172,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->"},{"file":"\/var\/www\/vhosts\/SERVER-HOST\/lib\/private\/Route\/Router.php","line":298,"function":"main","class":"OC\\AppFramework\\App","type":"::"},{"file":"\/var\/www\/vhosts\/SERVER-HOST\/lib\/base.php","line":1047,"function":"match","class":"OC\\Route\\Router","type":"->"},{"file":"\/var\/www\/vhosts\/SERVER-HOST\/index.php","line":36,"function":"handleRequest","class":"OC","type":"::"}]
> 
> POST /index.php/apps/libresign/api/0.1/sign/uuid/1111111111111111111111111111111111111111

[vitormattos]

Hi @Bolli84
If you haven't a problem with data protection, could you share the PDF that trigger the problem to be possible reproduce here?

[lhsazevedo]

HI @Bolli84. Could you share the PDF file? Without it, we can't reproduce the problem.

[vitormattos]

Duplicated of #889