зеркало из https://github.com/mozilla/gecko-dev.git
143 строки
4.5 KiB
C++
143 строки
4.5 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 "nsString.h"
|
|
#include "nsIHttpChannel.h"
|
|
#include "nsUnicharUtils.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,
|
|
|
|
/* 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,
|
|
|
|
/* spec tokens: same-origin */
|
|
RP_Same_Origin = nsIHttpChannel::REFERRER_POLICY_SAME_ORIGIN,
|
|
|
|
/* spec tokens: strict-origin */
|
|
RP_Strict_Origin = nsIHttpChannel::REFERRER_POLICY_STRICT_ORIGIN,
|
|
|
|
/* spec tokens: strict-origin-when-cross-origin */
|
|
RP_Strict_Origin_When_Cross_Origin =
|
|
nsIHttpChannel::REFERRER_POLICY_STRICT_ORIGIN_WHEN_XORIGIN,
|
|
|
|
/* spec tokens: empty string */
|
|
/* The empty string "" corresponds to no referrer policy, or unset policy */
|
|
RP_Unset = nsIHttpChannel::REFERRER_POLICY_UNSET,
|
|
};
|
|
|
|
// Referrer Policy spec tokens. Order matters here, make sure it matches the
|
|
// order as in nsIHttpChannel.idl
|
|
static const char* kReferrerPolicyString[] = {
|
|
"", // REFERRER_POLICY_UNSET
|
|
"no-referrer-when-downgrade", // REFERRER_POLICY_NO_REFERRER_WHEN_DOWNGRADE
|
|
"no-referrer", // REFERRER_POLICY_NO_REFERRER
|
|
"origin", // REFERRER_POLICY_ORIGIN
|
|
"origin-when-cross-origin", // REFERRER_POLICY_ORIGIN_WHEN_XORIGIN
|
|
"unsafe-url", // REFERRER_POLICY_UNSAFE_URL
|
|
"same-origin", // REFERRER_POLICY_SAME_ORIGIN
|
|
"strict-origin", // REFERRER_POLICY_STRICT_ORIGIN
|
|
"strict-origin-when-cross-origin" // REFERRER_POLICY_STRICT_ORIGIN_WHEN_XORIGIN
|
|
};
|
|
|
|
/* spec tokens: never */
|
|
const char kRPS_Never[] = "never";
|
|
|
|
/* spec tokens: default */
|
|
const char kRPS_Default[] = "default";
|
|
|
|
/* spec tokens: origin-when-crossorigin */
|
|
const char kRPS_Origin_When_Crossorigin[] = "origin-when-crossorigin";
|
|
|
|
/* spec tokens: always */
|
|
const char kRPS_Always[] = "always";
|
|
|
|
inline ReferrerPolicy ReferrerPolicyFromString(const nsAString& content) {
|
|
if (content.IsEmpty()) {
|
|
return RP_Unset;
|
|
}
|
|
|
|
nsString lowerContent(content);
|
|
ToLowerCase(lowerContent);
|
|
|
|
if (lowerContent.EqualsLiteral(kRPS_Never)) {
|
|
return RP_No_Referrer;
|
|
}
|
|
if (lowerContent.EqualsLiteral(kRPS_Default)) {
|
|
return RP_No_Referrer_When_Downgrade;
|
|
}
|
|
if (lowerContent.EqualsLiteral(kRPS_Origin_When_Crossorigin)) {
|
|
return RP_Origin_When_Crossorigin;
|
|
}
|
|
if (lowerContent.EqualsLiteral(kRPS_Always)) {
|
|
return RP_Unsafe_URL;
|
|
}
|
|
// This is implemented step by step as described in the Referrer Policy
|
|
// specification, section "Determine token's Policy".
|
|
|
|
uint16_t numStr =
|
|
(sizeof(kReferrerPolicyString) / sizeof(kReferrerPolicyString[0]));
|
|
for (uint16_t i = 0; i < numStr; i++) {
|
|
if (lowerContent.EqualsASCII(kReferrerPolicyString[i])) {
|
|
return static_cast<ReferrerPolicy>(i);
|
|
}
|
|
}
|
|
|
|
// Spec says if none of the previous match, use empty string.
|
|
return RP_Unset;
|
|
}
|
|
|
|
inline ReferrerPolicy AttributeReferrerPolicyFromString(
|
|
const nsAString& content) {
|
|
// Specs :
|
|
// https://html.spec.whatwg.org/multipage/infrastructure.html#referrer-policy-attribute
|
|
// Spec says the empty string "" corresponds to no referrer policy, or
|
|
// RP_Unset
|
|
if (content.IsEmpty()) {
|
|
return RP_Unset;
|
|
}
|
|
|
|
nsString lowerContent(content);
|
|
ToLowerCase(lowerContent);
|
|
|
|
uint16_t numStr =
|
|
(sizeof(kReferrerPolicyString) / sizeof(kReferrerPolicyString[0]));
|
|
for (uint16_t i = 0; i < numStr; i++) {
|
|
if (lowerContent.EqualsASCII(kReferrerPolicyString[i])) {
|
|
return static_cast<ReferrerPolicy>(i);
|
|
}
|
|
}
|
|
|
|
// Spec says invalid value default is empty string state
|
|
// So, return RP_Unset if none of the previous match, return RP_Unset
|
|
return RP_Unset;
|
|
}
|
|
|
|
inline const char* ReferrerPolicyToString(ReferrerPolicy aPolicy) {
|
|
return kReferrerPolicyString[static_cast<uint32_t>(aPolicy)];
|
|
}
|
|
|
|
} // namespace net
|
|
} // namespace mozilla
|
|
|
|
#endif
|