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use std::fmt;
#[allow(unused)]
use std::ascii::AsciiExt;
use header::{Header, Raw, parsing};
#[derive(Clone, PartialEq, Eq, Debug)]
pub enum ReferrerPolicy {
NoReferrer,
NoReferrerWhenDowngrade,
SameOrigin,
Origin,
OriginWhenCrossOrigin,
UnsafeUrl,
StrictOrigin,
StrictOriginWhenCrossOrigin,
}
impl Header for ReferrerPolicy {
fn header_name() -> &'static str {
static NAME: &'static str = "Referrer-Policy";
NAME
}
fn parse_header(raw: &Raw) -> ::Result<ReferrerPolicy> {
use self::ReferrerPolicy::*;
let headers: Vec<String> = try!(parsing::from_comma_delimited(raw));
for h in headers.iter().rev() {
let slice = &h.to_ascii_lowercase()[..];
match slice {
"no-referrer" | "never" => return Ok(NoReferrer),
"no-referrer-when-downgrade" | "default" => return Ok(NoReferrerWhenDowngrade),
"same-origin" => return Ok(SameOrigin),
"origin" => return Ok(Origin),
"origin-when-cross-origin" => return Ok(OriginWhenCrossOrigin),
"strict-origin" => return Ok(StrictOrigin),
"strict-origin-when-cross-origin" => return Ok(StrictOriginWhenCrossOrigin),
"unsafe-url" | "always" => return Ok(UnsafeUrl),
_ => continue,
}
}
Err(::Error::Header)
}
fn fmt_header(&self, f: &mut ::header::Formatter) -> fmt::Result {
f.fmt_line(self)
}
}
impl fmt::Display for ReferrerPolicy {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
use self::ReferrerPolicy::*;
f.write_str(match *self {
NoReferrer => "no-referrer",
NoReferrerWhenDowngrade => "no-referrer-when-downgrade",
SameOrigin => "same-origin",
Origin => "origin",
OriginWhenCrossOrigin => "origin-when-cross-origin",
StrictOrigin => "strict-origin",
StrictOriginWhenCrossOrigin => "strict-origin-when-cross-origin",
UnsafeUrl => "unsafe-url",
})
}
}
#[test]
fn test_parse_header() {
let a: ReferrerPolicy = Header::parse_header(&"origin".into()).unwrap();
let b = ReferrerPolicy::Origin;
assert_eq!(a, b);
let e: ::Result<ReferrerPolicy> = Header::parse_header(&"foobar".into());
assert!(e.is_err());
}
#[test]
fn test_rightmost_header() {
let a: ReferrerPolicy = Header::parse_header(&"same-origin, origin, foobar".into()).unwrap();
let b = ReferrerPolicy::Origin;
assert_eq!(a, b);
}