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Phar signatures practically are of limited size; for the MD5 and SHA hashes the size is fixed (at most 64 bytes for SHA512); for OpenSSL public keys there is no size limit in theory, but "64 KiB ought to be good enough for anybody". So we check for that limit, to avoid fatal errors due to out of memory conditions. Since it is neither possible to have the signature compressed in the ZIP archive, nor is it possible to manually add a signature via Phar, we use ZipArchive to create a suitable archive for the test on the fly. Closes GH-6474.
31 lines
846 B
PHP
31 lines
846 B
PHP
--TEST--
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Bug #73809 (Phar Zip parse crash - mmap fail)
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--SKIPIF--
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<?php
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if (!extension_loaded('phar')) die('skip phar extension not available');
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if (!extension_loaded('zip')) die('skip zip extension not available');
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?>
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--FILE--
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<?php
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// create the ZIP to be tested
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$zip = new ZipArchive;
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$zip->open(__DIR__ . '/73809.zip', ZipArchive::CREATE);
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$zip->addFromString('73809.txt', 'yada yada');
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$zip->addFromString('.phar/signature.bin', str_repeat('*', 64 * 1024 + 1));
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$zip->setCompressionName('.phar/signature.bin', ZipArchive::CM_STORE);
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var_dump($zip->close());
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try {
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$phar = new PharData(__DIR__ . '/73809.zip');
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} catch (Exception $ex) {
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echo $ex->getMessage(), PHP_EOL;
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}
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?>
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--CLEAN--
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<?php
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@unlink(__DIR__ . '/73809.zip');
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?>
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--EXPECTF--
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bool(true)
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phar error: signatures larger than 64 KiB are not supported in zip-based phar "%s"
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