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ConditionalGet.php : allows direct setting of ETag. Patch from Andy Dawson.

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This commit is contained in:
Steve Clay
2008-10-15 20:28:14 +00:00
parent 44f8668c92
commit 24b3688c51
1 changed files with 15 additions and 10 deletions
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25
min/lib/HTTP/ConditionalGet.php
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@@ -75,6 +75,9 @@ class HTTP_ConditionalGet {
* 'lastModifiedTime': (int) if given, both ETag AND Last-Modified headers
* will be sent with content. This is recommended.
*
* 'eTag': (string) if given, this will be used as the ETag header rather
* than values based on lastModifiedTime or contentHash.
*
* 'contentHash': (string) if given, only the ETag header can be sent with
* content (only HTTP1.1 clients can conditionally GET). The given string
* should be short with no quote characters and always change when the
@@ -109,16 +112,18 @@ class HTTP_ConditionalGet {
$_SERVER['REQUEST_TIME'] + $spec['maxAge']
);
}
if (isset($spec['lastModifiedTime'])) {
// base both headers on time
$this->_setLastModified($spec['lastModifiedTime']);
$this->_setEtag($spec['lastModifiedTime'], $scope);
} else {
// hope to use ETag
if (isset($spec['contentHash'])) {
$this->_setEtag($spec['contentHash'], $scope);
}
}
if (isset($spec['lastModifiedTime'])) {
$this->_setLastModified($spec['lastModifiedTime']);
if (isset($spec['eTag'])) { // Use it
$this->_setEtag($spec['eTag'], $scope);
} else { // base both headers on time
$this->_setEtag($spec['lastModifiedTime'], $scope);
}
} elseif (isset($spec['eTag'])) { // Use it
$this->_setEtag($spec['eTag'], $scope);
} elseif (isset($spec['contentHash'])) { // Use the hash as the ETag
$this->_setEtag($spec['contentHash'], $scope);
}
$this->_headers['Cache-Control'] = "max-age={$maxAge}, {$scope}, must-revalidate";
// invalidate cache if disabled, otherwise check
$this->cacheIsValid = (isset($spec['invalidate']) && $spec['invalidate'])