Bug #69214 [Opn->Nab]: Regression in libmagic magic.mime printf detection

Edit report at https://bugs.php.net/bug.php?id=69214&edit=1 ID: 69214 Updated by: ab@php.net Reported by: weierophinney@php.net Summary: Regression in libmagic magic.mime printf detection -Status: Open +Status: Not a bug Type: Bug Package: Filesystem function related Operating System: Ubuntu 14.10 PHP Version: master-Git-2015-03-10 (Git) Block user comment: N Private report: N New Comment: libmagic in master was upgraded to a more recent version, the magic file format is not compatible anymore. For the tests with PHP7 please use some magic from libmagic around 5.20 (just a guess) or best pull the one located ext/fileinfo/tests/magic in the php source tree. Thanks. Previous Comments: ------------------------------------------------------------------------ [2015-03-10 15:16:28] weierophinney@php.net Description: ------------ We're testing ZF2 against PHP7 nightly. In the last couple days, we started noticing that our tests that use a magic.mime file started failing, with messages of the format "finfo_open(): Warning: Printf format l' is not valid for type lequad' in description `...'". From what I can see, recent changes to ext/fileinfo/libmagic/ have removed support for the following printf sequences: * l, ll, h, and hh (used as length modifiers) * .0 (used to indicate zero-padding vs space padding) * numeric precision This is particularly problematic, as the lequad and bequad libmagic specifications require specific formats that require such modifiers, and without the above, there is no way to provide a valid magic.mime file to finfo_open(). Researching libmagic, I cannot find a magic.mime file that does NOT have these formats present. Test script: --------------- <?php $magicData = file_get_contents('https://raw.githubusercontent.com/zendframework/zf2/2750340ad353cad9e80525d1c13efcda03e21027/tests/ZendTest/Validator/File/_files/magic.mime'); $magicFile = tempnam(sys_get_temp_dir(), 'mag'); file_put_contents($magicFile, $magicData); finfo_open(FILEINFO_MIME_TYPE, $magicFile); Actual result: -------------- ErrorException: finfo_open(): Failed to load magic database at '...'. Caused by ErrorException: finfo_open(): Warning: Printf format h' is not valid for type leshort' in description `.%hd' // and many, many more similar errors ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=69214&edit=1