gecko/netwerk/base/ReferrerPolicy.h

77 lines
2.6 KiB
C++

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef ReferrerPolicy_h__
#define ReferrerPolicy_h__
#include "nsStringGlue.h"
#include "nsIHttpChannel.h"
namespace mozilla { namespace net {
enum ReferrerPolicy {
/* spec tokens: never no-referrer */
RP_No_Referrer = nsIHttpChannel::REFERRER_POLICY_NO_REFERRER,
/* spec tokens: origin */
RP_Origin = nsIHttpChannel::REFERRER_POLICY_ORIGIN,
/* spec tokens: default no-referrer-when-downgrade */
RP_No_Referrer_When_Downgrade = nsIHttpChannel::REFERRER_POLICY_NO_REFERRER_WHEN_DOWNGRADE,
RP_Default = nsIHttpChannel::REFERRER_POLICY_NO_REFERRER_WHEN_DOWNGRADE,
/* spec tokens: origin-when-cross-origin */
RP_Origin_When_Crossorigin = nsIHttpChannel::REFERRER_POLICY_ORIGIN_WHEN_XORIGIN,
/* spec tokens: always unsafe-url */
RP_Unsafe_URL = nsIHttpChannel::REFERRER_POLICY_UNSAFE_URL
};
inline ReferrerPolicy
ReferrerPolicyFromString(const nsAString& content)
{
// This is implemented step by step as described in the Referrer Policy
// specification, section 6.4 "Determine token's Policy".
if (content.LowerCaseEqualsLiteral("never") ||
content.LowerCaseEqualsLiteral("no-referrer")) {
return RP_No_Referrer;
}
if (content.LowerCaseEqualsLiteral("origin")) {
return RP_Origin;
}
if (content.LowerCaseEqualsLiteral("default") ||
content.LowerCaseEqualsLiteral("no-referrer-when-downgrade")) {
return RP_No_Referrer_When_Downgrade;
}
if (content.LowerCaseEqualsLiteral("origin-when-cross-origin") ||
content.LowerCaseEqualsLiteral("origin-when-crossorigin")) {
return RP_Origin_When_Crossorigin;
}
if (content.LowerCaseEqualsLiteral("always") ||
content.LowerCaseEqualsLiteral("unsafe-url")) {
return RP_Unsafe_URL;
}
// Spec says if none of the previous match, use No_Referrer.
return RP_No_Referrer;
}
inline bool
IsValidReferrerPolicy(const nsAString& content)
{
return content.LowerCaseEqualsLiteral("never")
|| content.LowerCaseEqualsLiteral("no-referrer")
|| content.LowerCaseEqualsLiteral("origin")
|| content.LowerCaseEqualsLiteral("default")
|| content.LowerCaseEqualsLiteral("no-referrer-when-downgrade")
|| content.LowerCaseEqualsLiteral("origin-when-cross-origin")
|| content.LowerCaseEqualsLiteral("origin-when-crossorigin")
|| content.LowerCaseEqualsLiteral("always")
|| content.LowerCaseEqualsLiteral("unsafe-url");
}
} } //namespace mozilla::net
#endif