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- fopen() can fail even when file_exists() succeeds (thanks, dakitiger!)

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git-svn-id: http://phpseclib.svn.sourceforge.net/svnroot/phpseclib/trunk@142 21d32557-59b3-4da0-833f-c5933fad653e
This commit is contained in:
Jim Wigginton 2011-02-06 01:12:20 +00:00
parent 80bf62d6fc
commit 5eea5be210
1 changed files with 7 additions and 7 deletions
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12
phpseclib/Crypt/Random.php
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@ -61,13 +61,13 @@ function crypt_random($min = 0, $max = 0x7FFFFFFF)
}
// see http://en.wikipedia.org/wiki//dev/random
// if open_basedir is enabled file_exists() will ouput an "open_basedir restriction in effect" warning,
// so we suppress it.
if (@file_exists('/dev/urandom')) {
static $fp;
if (!$fp) {
$fp = fopen('/dev/urandom', 'rb');
static $urandom = true;
if ($urandom === true) {
// Warning's will be output unles the error suppression operator is used. Errors such as
// "open_basedir restriction in effect", "Permission denied", "No such file or directory", etc.
$urandom = @fopen('/dev/urandom', 'rb');
}
if (!is_bool($urandom)) {
extract(unpack('Nrandom', fread($fp, 4)));
// say $min = 0 and $max = 3. if we didn't do abs() then we could have stuff like this: