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Fix GH-13984: Buffer size is now checked before memcmp #13991

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Fix GH-13984: Buffer size is now checked before memcmp #13991

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e93c35b
Buffer size is now checked before memcmp
SakiTakamachi Apr 17, 2024
28a51dc
address comments
SakiTakamachi Apr 17, 2024
15e34dd
fixed test
SakiTakamachi Apr 17, 2024
d248a60
remove `-1`
SakiTakamachi Apr 17, 2024
5b64ffe
use strcmp
SakiTakamachi Apr 17, 2024
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2 changes: 1 addition & 1 deletion ext/pdo_sqlite/sqlite_driver.c
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Original file line number Diff line number Diff line change
Expand Up @@ -751,7 +751,7 @@ static char *make_filename_safe(const char *filename)
}
return estrdup(filename);
}
if (*filename && memcmp(filename, ":memory:", sizeof(":memory:"))) {
if (*filename && zend_binary_strcmp(filename, strlen(filename), ":memory:", strlen(":memory:"))) {
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I think I prefer just a regular call to strcmp, simpler and prevents computing the length too.
The binary strcmp doesn't rlly have an advantage when using strlen.

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Changed it :)

char *fullpath = expand_filepath(filename, NULL);

if (!fullpath) {
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18 changes: 18 additions & 0 deletions ext/pdo_sqlite/tests/gh13991.phpt
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Original file line number Diff line number Diff line change
@@ -0,0 +1,18 @@
--TEST--
Fix GH-13984: Buffer size is now checked before memcmp
--EXTENSIONS--
pdo_sqlite
--SKIPIF--
<?php if (file_exists(getcwd() . '/13991db')) die('skip File "13991db" already exists.'); ?>
--FILE--
<?php
$dbfile = '13991db';
$db = new PDO('sqlite:' . $dbfile, null, null, [PDO::ATTR_PERSISTENT => true]);
echo 'done!';
?>
--CLEAN--
<?php
@unlink(getcwd() . '/13991db');
?>
--EXPECT--
done!