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/* 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 https://mozilla.org/MPL/2.0/. */
use std::cell::RefCell;
use std::net::IpAddr;
use std::rc::Rc;
use malloc_size_of::malloc_size_of_is_0;
use malloc_size_of_derive::MallocSizeOf;
use serde::{Deserialize, Serialize};
use url::{Host, Origin};
use uuid::Uuid;
/// The origin of an URL
#[derive(Clone, Debug, Deserialize, Eq, Hash, MallocSizeOf, PartialEq, Serialize)]
pub enum ImmutableOrigin {
/// A globally unique identifier
Opaque(OpaqueOrigin),
/// Consists of the URL's scheme, host and port
Tuple(String, Host, u16),
}
impl ImmutableOrigin {
pub fn new(origin: Origin) -> ImmutableOrigin {
match origin {
Origin::Opaque(_) => ImmutableOrigin::new_opaque(),
Origin::Tuple(scheme, host, port) => ImmutableOrigin::Tuple(scheme, host, port),
}
}
pub fn same_origin(&self, other: &MutableOrigin) -> bool {
self == other.immutable()
}
pub fn same_origin_domain(&self, other: &MutableOrigin) -> bool {
!other.has_domain() && self == other.immutable()
}
/// Creates a new opaque origin that is only equal to itself.
pub fn new_opaque() -> ImmutableOrigin {
ImmutableOrigin::Opaque(OpaqueOrigin::Opaque(servo_rand::random_uuid()))
}
// For use in mixed security context tests because data: URL workers inherit contexts
pub fn new_opaque_data_url_worker() -> ImmutableOrigin {
ImmutableOrigin::Opaque(OpaqueOrigin::SecureWorkerFromDataUrl(
servo_rand::random_uuid(),
))
}
pub fn scheme(&self) -> Option<&str> {
match *self {
ImmutableOrigin::Opaque(_) => None,
ImmutableOrigin::Tuple(ref scheme, _, _) => Some(&**scheme),
}
}
pub fn host(&self) -> Option<&Host> {
match *self {
ImmutableOrigin::Opaque(_) => None,
ImmutableOrigin::Tuple(_, ref host, _) => Some(host),
}
}
pub fn port(&self) -> Option<u16> {
match *self {
ImmutableOrigin::Opaque(_) => None,
ImmutableOrigin::Tuple(_, _, port) => Some(port),
}
}
pub fn into_url_origin(self) -> Origin {
match self {
ImmutableOrigin::Opaque(_) => Origin::new_opaque(),
ImmutableOrigin::Tuple(scheme, host, port) => Origin::Tuple(scheme, host, port),
}
}
/// Return whether this origin is a (scheme, host, port) tuple
/// (as opposed to an opaque origin).
pub fn is_tuple(&self) -> bool {
match *self {
ImmutableOrigin::Opaque(..) => false,
ImmutableOrigin::Tuple(..) => true,
}
}
/// <https://w3c.github.io/webappsec-secure-contexts/#is-origin-trustworthy>
pub fn is_potentially_trustworthy(&self) -> bool {
// 1. If origin is an opaque origin return "Not Trustworthy"
if matches!(self, ImmutableOrigin::Opaque(_)) {
return false;
}
if let ImmutableOrigin::Tuple(scheme, host, _) = self {
// 3. If origin’s scheme is either "https" or "wss", return "Potentially Trustworthy"
if scheme == "https" || scheme == "wss" {
return true;
}
// 6. If origin’s scheme is "file", return "Potentially Trustworthy".
if scheme == "file" {
return true;
}
// 4. If origin’s host matches one of the CIDR notations 127.0.0.0/8 or ::1/128,
// return "Potentially Trustworthy".
if let Ok(ip_addr) = host.to_string().parse::<IpAddr>() {
return ip_addr.is_loopback();
}
// 5. If the user agent conforms to the name resolution rules in
// [let-localhost-be-localhost] and one of the following is true:
// * origin’s host is "localhost" or "localhost."
// * origin’s host ends with ".localhost" or ".localhost."
// then return "Potentially Trustworthy".
if let Host::Domain(domain) = host {
if domain == "localhost" || domain.ends_with(".localhost") {
return true;
}
}
}
// 9. Return "Not Trustworthy".
false
}
/// <https://html.spec.whatwg.org/multipage/#ascii-serialisation-of-an-origin>
pub fn ascii_serialization(&self) -> String {
self.clone().into_url_origin().ascii_serialization()
}
}
/// Opaque identifier for URLs that have file or other schemes
#[derive(Clone, Debug, Deserialize, Eq, Hash, PartialEq, Serialize)]
pub enum OpaqueOrigin {
Opaque(Uuid),
// Workers created from `data:` urls will have opaque origins but need to be treated
// as inheriting the secure context they were created in. This tracks that the origin
// was created in such a context
SecureWorkerFromDataUrl(Uuid),
}
malloc_size_of_is_0!(OpaqueOrigin);
/// A representation of an [origin](https://html.spec.whatwg.org/multipage/#origin-2).
#[derive(Clone, Debug, Deserialize, Serialize)]
pub struct MutableOrigin(Rc<(ImmutableOrigin, RefCell<Option<Host>>)>);
malloc_size_of_is_0!(MutableOrigin);
impl MutableOrigin {
pub fn new(origin: ImmutableOrigin) -> MutableOrigin {
MutableOrigin(Rc::new((origin, RefCell::new(None))))
}
pub fn immutable(&self) -> &ImmutableOrigin {
&(self.0).0
}
pub fn is_tuple(&self) -> bool {
self.immutable().is_tuple()
}
pub fn scheme(&self) -> Option<&str> {
self.immutable().scheme()
}
pub fn host(&self) -> Option<&Host> {
self.immutable().host()
}
pub fn port(&self) -> Option<u16> {
self.immutable().port()
}
pub fn same_origin(&self, other: &MutableOrigin) -> bool {
self.immutable() == other.immutable()
}
pub fn same_origin_domain(&self, other: &MutableOrigin) -> bool {
if let Some(ref self_domain) = *(self.0).1.borrow() {
if let Some(ref other_domain) = *(other.0).1.borrow() {
self_domain == other_domain &&
self.immutable().scheme() == other.immutable().scheme()
} else {
false
}
} else {
self.immutable().same_origin_domain(other)
}
}
pub fn domain(&self) -> Option<Host> {
(self.0).1.borrow().clone()
}
pub fn set_domain(&self, domain: Host) {
*(self.0).1.borrow_mut() = Some(domain);
}
pub fn has_domain(&self) -> bool {
(self.0).1.borrow().is_some()
}
pub fn effective_domain(&self) -> Option<Host> {
self.immutable()
.host()
.map(|host| self.domain().unwrap_or_else(|| host.clone()))
}
}
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