/**
* Validates If-Unmodified-Since Header Field in according to RFC 2616 Section 14.28
*
* <p><strong>RFC Specification</strong></p>
*
* <code>
* If-Unmodified-Since = "If-Unmodified-Since" ":" HTTP-date
*
* HTTP-date = rfc1123-date
*
* rfc1123-date = wkday "," SP date SP time SP "GMT"
*
* date = 2DIGIT SP month SP 4DIGIT
* ; day month year (e.g., 02 Jun 1982)
*
* time = 2DIGIT ":" 2DIGIT ":" 2DIGIT
* ; 00:00:00 - 23:59:59
*
* wkday = "Mon" | "Tue" | "Wed"
* | "Thu" | "Fri" | "Sat" | "Sun"
*
* weekday = "Monday" | "Tuesday" | "Wednesday"
* | "Thursday" | "Friday" | "Saturday" | "Sunday"
*
* month = "Jan" | "Feb" | "Mar" | "Apr"
* | "May" | "Jun" | "Jul" | "Aug"
* | "Sep" | "Oct" | "Nov" | "Dec"
* </code>
*
* @param string $data
* Data to validate
*
* @return boolean
* TRUE if valid and FALSE otherwise
*
* @link
* http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.28
* RFC 2616 Section 14.28
*
* @see Next\Validate\HTTP\Headers\Common\Date::validate()
*/
public function validate($data)
{
$date = new Date();
return $date->validate($data);
}
/**
* Validates Content-Disposition Header Field in according to RFC 2183 Section 2
*
* <p><strong>RFC Specification</strong></p>
*
* <code>
* Content-Disposition = "Content-Disposition" ":"
* disposition-type
* *(";" disposition-param)
*
* disposition-type := "inline"
* / "attachment"
* / extension-token
* ; values are not case-sensitive
*
* disposition-param := filename-param
* / creation-date-param
* / modification-date-param
* / read-date-param
* / size-param
* / parameter
*
* filename-param := "filename" "=" value
*
* creation-date-param := "creation-date" "=" quoted-date-time
*
* modification-date-param := "modification-date" "=" quoted-date-time
*
* read-date-param := "read-date" "=" quoted-date-time
*
* size-param := "size" "=" 1*DIGIT
*
* quoted-date-time := quoted-string
* ; contents MUST be an RFC 822 `date-time'
* ; numeric timezones (+HHMM or -HHMM) MUST be used
* </code>
*
* @param string $data
* Data to validate
*
* @return boolean
* TRUE if valid and FALSE otherwise
*
* @link
* http://tools.ietf.org/html/rfc2183#section-2
* RFC 2183 Section 2
*/
public function validate($data)
{
preg_match(sprintf('/^(?:
(?<disposition>inline|attachment)
(?:;\\s*
filename=(?<filename>%s\\b)
)?
(?:;\\s*
creation-date=[\'"]?(?<creation>[ ,:a-zA-Z0-9]+)[\'"]?
)?
(?:;\\s*
modification-date=[\'"]?(?<modification>[ ,:a-zA-Z0-9]+)[\'"]?
)?
(?:;\\s*
read-date=[\'"]?(?<read>[ ,:a-zA-Z0-9]+)[\'"]?
)?
(?:;\\s*
size=[\'"]?(?<size>[0-9]+)[\'"]?
)?
)/x', self::TOKEN), $data, $matches);
/**
* @internal
* Now we have to check the HTTP-dates
* Instead of repeat gmdate() function several times, let's use Date Header Validator
*/
$date = new Date();
if (isset($matches['creation']) && !$date->validate($matches['creation'])) {
return FALSE;
}
if (isset($matches['modification']) && !$date->validate($matches['modification'])) {
return FALSE;
}
if (isset($matches['read']) && !$date->validate($matches['read'])) {
return FALSE;
}
$matches = array_filter($matches);
return count($matches) != 0;
}
/**
* Validates Set-Cookie Header Field in according to RFC 2109 Section 4.2.2
*
* <p><strong>RFC Specification</strong></p>
*
* <code>
* Set-Cookie: "Set-Cookie:" cookies
*
* cookies = 1#cookie
* cookie = NAME "=" VALUE *(";" cookie-av)
* NAME = attr
* VALUE = value
* cookie-av = "Comment" "=" value
* | "Domain" "=" value
* | "Max-Age" "=" value
* | "Path" "=" value
* | "Secure"
* | "Version" "=" 1*DIGIT
* </code>
*
* @param string $data
* Data to validate
*
* @return boolean
* TRUE if valid and FALSE otherwise
*
* @link
* http://tools.ietf.org/html/rfc2109#section-4.2.2
* RFC 2109 Section 4.2.2
*
* @link
* http://en.wikipedia.org/wiki/HTTP_Cookie
*/
public function validate($data)
{
preg_match(sprintf('/(?:
(?<name>%s)\\="(?<value>%s)"
(?:;\\s*
version\\="(?<version>%s)"
)?
(?:;\\s*
comment\\="(?<comment>[^ \\t\\n\\r\\f\\v]+)"
)?
(?:;\\s*
(?:expires|max-age)\\="(?<expires>[ ,:a-zA-Z0-9-]+)"
)?
(?:;\\s*
path\\="(?<path>\\/[\\w\\#:.?+=&%%@!\\/-]*)"
)?
(?:;\\s*
domain\\="(?<domain>[\\w\\#:.?+=&%%@!\\/-]+)"
)?
(?:;\\s*
(?<secure>secure)
)?
(?:;\\s*
(?<httponly>httponly)
)?
)
/ix', self::TOKEN, self::TOKEN, self::FLOAT), $data, $matches);
$matches = array_filter($matches);
/**
* @internal
* Now we have to check the HTTP-dates
* Instead of repeat gmdate() function several times, let's use Date Header Validator
*/
$date = new Date();
if (isset($matches['expires']) && !$date->validate($matches['expires'])) {
return FALSE;
}
return $matches != 0;
}
