Implement {Put,Get,Delete}BucketCors and CORS in general

- OPTIONS request against API endpoint - Returning corresponding CORS headers on API calls - Returning corresponding CORS headers on website GET's
2026-08-07 05:13:12 +00:00 · 2022-01-07 16:23:04 +01:00
parent 820924534a
commit ea7fb901eb
12 changed files with 578 additions and 75 deletions
@@ -5,7 +5,7 @@ use futures::future::Future;
 use hyper::header;
 use hyper::server::conn::AddrStream;
 use hyper::service::{make_service_fn, service_fn};
-use hyper::{Body, Request, Response, Server};
+use hyper::{Body, Method, Request, Response, Server};

 use garage_util::data::*;
 use garage_util::error::Error as GarageError;
@@ -13,12 +13,15 @@ use garage_util::error::Error as GarageError;
 use garage_model::garage::Garage;
 use garage_model::key_table::Key;

+use garage_table::util::*;
+
 use crate::error::*;
 use crate::signature::payload::check_payload_signature;

 use crate::helpers::*;
 use crate::s3_bucket::*;
 use crate::s3_copy::*;
+use crate::s3_cors::*;
 use crate::s3_delete::*;
 use crate::s3_get::*;
 use crate::s3_list::*;
@@ -102,17 +105,17 @@ async fn handler_inner(garage: Arc<Garage>, req: Request<Body>) -> Result<Respon

 	let host = authority_to_host(authority)?;

-	let bucket = garage
+	let bucket_name = garage
 		.config
 		.s3_api
 		.root_domain
 		.as_ref()
 		.and_then(|root_domain| host_to_bucket(&host, root_domain));

-	let (endpoint, bucket) = Endpoint::from_request(&req, bucket.map(ToOwned::to_owned))?;
+	let (endpoint, bucket_name) = Endpoint::from_request(&req, bucket_name.map(ToOwned::to_owned))?;
 	debug!("Endpoint: {:?}", endpoint);

-	let bucket_name = match bucket {
+	let bucket_name = match bucket_name {
 		None => return handle_request_without_bucket(garage, req, api_key, endpoint).await,
 		Some(bucket) => bucket.to_string(),
 	};
@@ -123,6 +126,12 @@ async fn handler_inner(garage: Arc<Garage>, req: Request<Body>) -> Result<Respon
 	}

 	let bucket_id = resolve_bucket(&garage, &bucket_name, &api_key).await?;
+	let bucket = garage
+		.bucket_table
+		.get(&EmptyKey, &bucket_id)
+		.await?
+		.filter(|b| !b.state.is_deleted())
+		.ok_or(Error::NoSuchBucket)?;

 	let allowed = match endpoint.authorization_type() {
 		Authorization::Read => api_key.allow_read(&bucket_id),
@@ -137,7 +146,17 @@ async fn handler_inner(garage: Arc<Garage>, req: Request<Body>) -> Result<Respon
 		));
 	}

-	match endpoint {
+	// Look up what CORS rule might apply to response.
+	// Requests for methods different than GET, HEAD or POST
+	// are always preflighted, i.e. the browser should make
+	// an OPTIONS call before to check it is allowed
+	let matching_cors_rule = match *req.method() {
+		Method::GET | Method::HEAD | Method::POST => find_matching_cors_rule(&bucket, &req)?,
+		_ => None,
+	};
+
+	let resp = match endpoint {
+		Endpoint::Options => handle_options(garage, &req, bucket_id).await,
 		Endpoint::HeadObject { key, .. } => handle_head(garage, &req, bucket_id, &key).await,
 		Endpoint::GetObject { key, .. } => handle_get(garage, &req, bucket_id, &key).await,
 		Endpoint::UploadPart {
@@ -320,8 +339,21 @@ async fn handler_inner(garage: Arc<Garage>, req: Request<Body>) -> Result<Respon
 			handle_put_website(garage, bucket_id, req, content_sha256).await
 		}
 		Endpoint::DeleteBucketWebsite {} => handle_delete_website(garage, bucket_id).await,
+		Endpoint::GetBucketCors {} => handle_get_cors(garage, bucket_id).await,
+		Endpoint::PutBucketCors {} => handle_put_cors(garage, bucket_id, req, content_sha256).await,
+		Endpoint::DeleteBucketCors {} => handle_delete_cors(garage, bucket_id).await,
 		endpoint => Err(Error::NotImplemented(endpoint.name().to_owned())),
+	};
+
+	// If request was a success and we have a CORS rule that applies to it,
+	// add the corresponding CORS headers to the response
+	let mut resp_ok = resp?;
+	if let Some(rule) = matching_cors_rule {
+		add_cors_headers(&mut resp_ok, rule)
+			.ok_or_internal_error("Invalid bucket CORS configuration")?;
 	}
+
+	Ok(resp_ok)
 }

 async fn handle_request_without_bucket(
@@ -15,6 +15,7 @@ mod signature;
 pub mod helpers;
 mod s3_bucket;
 mod s3_copy;
+pub mod s3_cors;
 mod s3_delete;
 pub mod s3_get;
 mod s3_list;
@@ -0,0 +1,409 @@
+use quick_xml::de::from_reader;
+use std::sync::Arc;
+
+use http::header::{
+	ACCESS_CONTROL_ALLOW_HEADERS, ACCESS_CONTROL_ALLOW_METHODS, ACCESS_CONTROL_ALLOW_ORIGIN,
+	ACCESS_CONTROL_EXPOSE_HEADERS, ACCESS_CONTROL_REQUEST_HEADERS, ACCESS_CONTROL_REQUEST_METHOD,
+};
+use hyper::{header::HeaderName, Body, Method, Request, Response, StatusCode};
+
+use serde::{Deserialize, Serialize};
+
+use crate::error::*;
+use crate::s3_xml::{to_xml_with_header, xmlns_tag, IntValue, Value};
+use crate::signature::verify_signed_content;
+
+use garage_model::bucket_table::{Bucket, CorsRule as GarageCorsRule};
+use garage_model::garage::Garage;
+use garage_table::*;
+use garage_util::data::*;
+
+pub async fn handle_get_cors(
+	garage: Arc<Garage>,
+	bucket_id: Uuid,
+) -> Result<Response<Body>, Error> {
+	let bucket = garage
+		.bucket_table
+		.get(&EmptyKey, &bucket_id)
+		.await?
+		.ok_or(Error::NoSuchBucket)?;
+
+	let param = bucket
+		.params()
+		.ok_or_internal_error("Bucket should not be deleted at this point")?;
+
+	if let Some(cors) = param.cors_config.get() {
+		let wc = CorsConfiguration {
+			xmlns: (),
+			cors_rules: cors
+				.iter()
+				.map(CorsRule::from_garage_cors_rule)
+				.collect::<Vec<_>>(),
+		};
+		let xml = to_xml_with_header(&wc)?;
+		Ok(Response::builder()
+			.status(StatusCode::OK)
+			.header(http::header::CONTENT_TYPE, "application/xml")
+			.body(Body::from(xml))?)
+	} else {
+		Ok(Response::builder()
+			.status(StatusCode::NO_CONTENT)
+			.body(Body::empty())?)
+	}
+}
+
+pub async fn handle_delete_cors(
+	garage: Arc<Garage>,
+	bucket_id: Uuid,
+) -> Result<Response<Body>, Error> {
+	let mut bucket = garage
+		.bucket_table
+		.get(&EmptyKey, &bucket_id)
+		.await?
+		.ok_or(Error::NoSuchBucket)?;
+
+	let param = bucket
+		.params_mut()
+		.ok_or_internal_error("Bucket should not be deleted at this point")?;
+
+	param.cors_config.update(None);
+	garage.bucket_table.insert(&bucket).await?;
+
+	Ok(Response::builder()
+		.status(StatusCode::NO_CONTENT)
+		.body(Body::empty())?)
+}
+
+pub async fn handle_put_cors(
+	garage: Arc<Garage>,
+	bucket_id: Uuid,
+	req: Request<Body>,
+	content_sha256: Option<Hash>,
+) -> Result<Response<Body>, Error> {
+	let body = hyper::body::to_bytes(req.into_body()).await?;
+
+	if let Some(content_sha256) = content_sha256 {
+		verify_signed_content(content_sha256, &body[..])?;
+	}
+
+	let mut bucket = garage
+		.bucket_table
+		.get(&EmptyKey, &bucket_id)
+		.await?
+		.ok_or(Error::NoSuchBucket)?;
+
+	let param = bucket
+		.params_mut()
+		.ok_or_internal_error("Bucket should not be deleted at this point")?;
+
+	let conf: CorsConfiguration = from_reader(&body as &[u8])?;
+	conf.validate()?;
+
+	param
+		.cors_config
+		.update(Some(conf.into_garage_cors_config()?));
+	garage.bucket_table.insert(&bucket).await?;
+
+	Ok(Response::builder()
+		.status(StatusCode::OK)
+		.body(Body::empty())?)
+}
+
+pub async fn handle_options(
+	garage: Arc<Garage>,
+	req: &Request<Body>,
+	bucket_id: Uuid,
+) -> Result<Response<Body>, Error> {
+	let bucket = garage
+		.bucket_table
+		.get(&EmptyKey, &bucket_id)
+		.await?
+		.ok_or(Error::NoSuchBucket)?;
+	let origin = req
+		.headers()
+		.get("Origin")
+		.ok_or_bad_request("Missing Origin header")?
+		.to_str()?;
+	let request_method = req
+		.headers()
+		.get(ACCESS_CONTROL_REQUEST_METHOD)
+		.ok_or_bad_request("Missing Access-Control-Request-Method header")?
+		.to_str()?;
+	let request_headers = match req.headers().get(ACCESS_CONTROL_REQUEST_HEADERS) {
+		Some(h) => h.to_str()?.split(',').map(|h| h.trim()).collect::<Vec<_>>(),
+		None => vec![],
+	};
+
+	if let Some(cors_config) = bucket.params().unwrap().cors_config.get() {
+		let matching_rule = cors_config
+			.iter()
+			.find(|rule| cors_rule_matches(rule, origin, request_method, request_headers.iter()));
+		if let Some(rule) = matching_rule {
+			let mut resp = Response::builder()
+				.status(StatusCode::OK)
+				.body(Body::empty())?;
+			add_cors_headers(&mut resp, rule).ok_or_internal_error("Invalid CORS configuration")?;
+			return Ok(resp);
+		}
+	}
+
+	Err(Error::Forbidden("This CORS request is not allowed.".into()))
+}
+
+pub fn find_matching_cors_rule<'a>(
+	bucket: &'a Bucket,
+	req: &Request<Body>,
+) -> Result<Option<&'a GarageCorsRule>, Error> {
+	if let Some(cors_config) = bucket.params().unwrap().cors_config.get() {
+		if let Some(origin) = req.headers().get("Origin") {
+			let origin = origin.to_str()?;
+			let request_headers = match req.headers().get(ACCESS_CONTROL_REQUEST_HEADERS) {
+				Some(h) => h.to_str()?.split(',').map(|h| h.trim()).collect::<Vec<_>>(),
+				None => vec![],
+			};
+			return Ok(cors_config.iter().find(|rule| {
+				cors_rule_matches(
+					rule,
+					origin,
+					&req.method().to_string(),
+					request_headers.iter(),
+				)
+			}));
+		}
+	}
+	Ok(None)
+}
+
+fn cors_rule_matches<'a, HI, S>(
+	rule: &GarageCorsRule,
+	origin: &'a str,
+	method: &'a str,
+	mut request_headers: HI,
+) -> bool
+where
+	HI: Iterator<Item = S>,
+	S: AsRef<str>,
+{
+	rule.allow_origins.iter().any(|x| x == "*" || x == origin)
+		&& rule.allow_methods.iter().any(|x| x == "*" || x == method)
+		&& request_headers.all(|h| {
+			rule.allow_headers
+				.iter()
+				.any(|x| x == "*" || x == h.as_ref())
+		})
+}
+
+pub fn add_cors_headers(
+	resp: &mut Response<Body>,
+	rule: &GarageCorsRule,
+) -> Result<(), http::header::InvalidHeaderValue> {
+	let h = resp.headers_mut();
+	h.insert(
+		ACCESS_CONTROL_ALLOW_ORIGIN,
+		rule.allow_origins.join(", ").parse()?,
+	);
+	h.insert(
+		ACCESS_CONTROL_ALLOW_METHODS,
+		rule.allow_methods.join(", ").parse()?,
+	);
+	h.insert(
+		ACCESS_CONTROL_ALLOW_HEADERS,
+		rule.allow_headers.join(", ").parse()?,
+	);
+	h.insert(
+		ACCESS_CONTROL_EXPOSE_HEADERS,
+		rule.expose_headers.join(", ").parse()?,
+	);
+	Ok(())
+}
+
+// ---- SERIALIZATION AND DESERIALIZATION TO/FROM S3 XML ----
+
+#[derive(Debug, Serialize, Deserialize, PartialEq, Eq, PartialOrd, Ord)]
+#[serde(rename = "CORSConfiguration")]
+pub struct CorsConfiguration {
+	#[serde(serialize_with = "xmlns_tag", skip_deserializing)]
+	pub xmlns: (),
+	#[serde(rename = "CORSRule")]
+	pub cors_rules: Vec<CorsRule>,
+}
+
+#[derive(Debug, Serialize, Deserialize, PartialEq, Eq, PartialOrd, Ord)]
+pub struct CorsRule {
+	#[serde(rename = "ID")]
+	pub id: Option<Value>,
+	#[serde(rename = "MaxAgeSeconds")]
+	pub max_age_seconds: Option<IntValue>,
+	#[serde(rename = "AllowedOrigin")]
+	pub allowed_origins: Vec<Value>,
+	#[serde(rename = "AllowedMethod")]
+	pub allowed_methods: Vec<Value>,
+	#[serde(rename = "AllowedHeader", default)]
+	pub allowed_headers: Vec<Value>,
+	#[serde(rename = "ExposeHeader", default)]
+	pub expose_headers: Vec<Value>,
+}
+
+#[derive(Debug, Serialize, Deserialize, PartialEq, Eq, PartialOrd, Ord)]
+pub struct AllowedMethod {
+	#[serde(rename = "AllowedMethod")]
+	pub allowed_method: Value,
+}
+
+#[derive(Debug, Serialize, Deserialize, PartialEq, Eq, PartialOrd, Ord)]
+pub struct AllowedHeader {
+	#[serde(rename = "AllowedHeader")]
+	pub allowed_header: Value,
+}
+
+#[derive(Debug, Serialize, Deserialize, PartialEq, Eq, PartialOrd, Ord)]
+pub struct ExposeHeader {
+	#[serde(rename = "ExposeHeader")]
+	pub expose_header: Value,
+}
+
+impl CorsConfiguration {
+	pub fn validate(&self) -> Result<(), Error> {
+		for r in self.cors_rules.iter() {
+			r.validate()?;
+		}
+		Ok(())
+	}
+
+	pub fn into_garage_cors_config(self) -> Result<Vec<GarageCorsRule>, Error> {
+		Ok(self
+			.cors_rules
+			.iter()
+			.map(CorsRule::to_garage_cors_rule)
+			.collect())
+	}
+}
+
+impl CorsRule {
+	pub fn validate(&self) -> Result<(), Error> {
+		for method in self.allowed_methods.iter() {
+			method
+				.0
+				.parse::<Method>()
+				.ok_or_bad_request("Invalid CORSRule method")?;
+		}
+		for header in self
+			.allowed_headers
+			.iter()
+			.chain(self.expose_headers.iter())
+		{
+			header
+				.0
+				.parse::<HeaderName>()
+				.ok_or_bad_request("Invalid HTTP header name")?;
+		}
+		Ok(())
+	}
+
+	pub fn to_garage_cors_rule(&self) -> GarageCorsRule {
+		let convert_vec =
+			|vval: &[Value]| vval.iter().map(|x| x.0.to_owned()).collect::<Vec<String>>();
+		GarageCorsRule {
+			id: self.id.as_ref().map(|x| x.0.to_owned()),
+			max_age_seconds: self.max_age_seconds.as_ref().map(|x| x.0 as u64),
+			allow_origins: convert_vec(&self.allowed_origins),
+			allow_methods: convert_vec(&self.allowed_methods),
+			allow_headers: convert_vec(&self.allowed_headers),
+			expose_headers: convert_vec(&self.expose_headers),
+		}
+	}
+
+	pub fn from_garage_cors_rule(rule: &GarageCorsRule) -> Self {
+		let convert_vec = |vval: &[String]| {
+			vval.iter()
+				.map(|x| Value(x.clone()))
+				.collect::<Vec<Value>>()
+		};
+		Self {
+			id: rule.id.as_ref().map(|x| Value(x.clone())),
+			max_age_seconds: rule.max_age_seconds.map(|x| IntValue(x as i64)),
+			allowed_origins: convert_vec(&rule.allow_origins),
+			allowed_methods: convert_vec(&rule.allow_methods),
+			allowed_headers: convert_vec(&rule.allow_headers),
+			expose_headers: convert_vec(&rule.expose_headers),
+		}
+	}
+}
+
+#[cfg(test)]
+mod tests {
+	use super::*;
+
+	use quick_xml::de::from_str;
+
+	#[test]
+	fn test_deserialize() -> Result<(), Error> {
+		let message = r#"<?xml version="1.0" encoding="UTF-8"?>
+<CORSConfiguration xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
+ <CORSRule>
+   <AllowedOrigin>http://www.example.com</AllowedOrigin>
+
+   <AllowedMethod>PUT</AllowedMethod>
+   <AllowedMethod>POST</AllowedMethod>
+   <AllowedMethod>DELETE</AllowedMethod>
+
+   <AllowedHeader>*</AllowedHeader>
+ </CORSRule>
+ <CORSRule>
+   <AllowedOrigin>*</AllowedOrigin>
+   <AllowedMethod>GET</AllowedMethod>
+ </CORSRule>
+ <CORSRule>
+   <ID>qsdfjklm</ID>
+   <MaxAgeSeconds>12345</MaxAgeSeconds>
+   <AllowedOrigin>https://perdu.com</AllowedOrigin>
+
+   <AllowedMethod>GET</AllowedMethod>
+   <AllowedMethod>DELETE</AllowedMethod>
+   <AllowedHeader>*</AllowedHeader>
+   <ExposeHeader>*</ExposeHeader>
+ </CORSRule>
+</CORSConfiguration>"#;
+		let conf: CorsConfiguration = from_str(message).unwrap();
+		let ref_value = CorsConfiguration {
+			xmlns: (),
+			cors_rules: vec![
+				CorsRule {
+					id: None,
+					max_age_seconds: None,
+					allowed_origins: vec!["http://www.example.com".into()],
+					allowed_methods: vec!["PUT".into(), "POST".into(), "DELETE".into()],
+					allowed_headers: vec!["*".into()],
+					expose_headers: vec![],
+				},
+				CorsRule {
+					id: None,
+					max_age_seconds: None,
+					allowed_origins: vec!["*".into()],
+					allowed_methods: vec!["GET".into()],
+					allowed_headers: vec![],
+					expose_headers: vec![],
+				},
+				CorsRule {
+					id: Some("qsdfjklm".into()),
+					max_age_seconds: Some(IntValue(12345)),
+					allowed_origins: vec!["https://perdu.com".into()],
+					allowed_methods: vec!["GET".into(), "DELETE".into()],
+					allowed_headers: vec!["*".into()],
+					expose_headers: vec!["*".into()],
+				},
+			],
+		};
+		assert_eq! {
+			ref_value,
+			conf
+		};
+
+		let message2 = to_xml_with_header(&ref_value)?;
+
+		let cleanup = |c: &str| c.replace(char::is_whitespace, "");
+		assert_eq!(cleanup(message), cleanup(&message2));
+
+		Ok(())
+	}
+}
@@ -327,6 +327,7 @@ pub enum Endpoint {
 		part_number_marker: Option<u64>,
 		upload_id: String,
 	},
+	Options,
 	PutBucketAccelerateConfiguration {
 	},
 	PutBucketAcl {
@@ -434,6 +435,10 @@ impl Endpoint {
 				.unwrap_or((path.to_owned(), ""))
 		};

+		if *req.method() == Method::OPTIONS {
+			return Ok((Self::Options, Some(bucket)));
+		}
+
 		let key = percent_encoding::percent_decode_str(key)
 			.decode_utf8()?
 			.into_owned();
@@ -665,7 +670,6 @@ impl Endpoint {
 				GetBucketAccelerateConfiguration,
 				GetBucketAcl,
 				GetBucketAnalyticsConfiguration,
-				GetBucketCors,
 				GetBucketEncryption,
 				GetBucketIntelligentTieringConfiguration,
 				GetBucketInventoryConfiguration,
@@ -711,6 +715,9 @@ impl Endpoint {
 				GetBucketWebsite,
 				PutBucketWebsite,
 				DeleteBucketWebsite,
+				GetBucketCors,
+				PutBucketCors,
+				DeleteBucketCors,
 			]
 		};
 		if readonly {
@@ -1027,7 +1034,7 @@ mod tests {
 			OWNER_DELETE "/" => DeleteBucket
 			DELETE "/?analytics&id=list1" => DeleteBucketAnalyticsConfiguration
 			DELETE "/?analytics&id=Id" => DeleteBucketAnalyticsConfiguration
-			DELETE "/?cors" => DeleteBucketCors
+			OWNER_DELETE "/?cors" => DeleteBucketCors
 			DELETE "/?encryption" => DeleteBucketEncryption
 			DELETE "/?intelligent-tiering&id=Id" => DeleteBucketIntelligentTieringConfiguration
 			DELETE "/?inventory&id=list1" => DeleteBucketInventoryConfiguration
@@ -1050,7 +1057,7 @@ mod tests {
 			GET "/?accelerate" => GetBucketAccelerateConfiguration
 			GET "/?acl" => GetBucketAcl
 			GET "/?analytics&id=Id" => GetBucketAnalyticsConfiguration
-			GET "/?cors" => GetBucketCors
+			OWNER_GET "/?cors" => GetBucketCors
 			GET "/?encryption" => GetBucketEncryption
 			GET "/?intelligent-tiering&id=Id" => GetBucketIntelligentTieringConfiguration
 			GET "/?inventory&id=list1" => GetBucketInventoryConfiguration
@@ -1126,7 +1133,7 @@ mod tests {
 			PUT "/?acl" => PutBucketAcl
 			PUT "/?analytics&id=report1" => PutBucketAnalyticsConfiguration
 			PUT "/?analytics&id=Id" => PutBucketAnalyticsConfiguration
-			PUT "/?cors" => PutBucketCors
+			OWNER_PUT "/?cors" => PutBucketCors
 			PUT "/?encryption" => PutBucketEncryption
 			PUT "/?intelligent-tiering&id=Id" => PutBucketIntelligentTieringConfiguration
 			PUT "/?inventory&id=report1" => PutBucketInventoryConfiguration
@@ -5,7 +5,7 @@ use hyper::{Body, Request, Response, StatusCode};
 use serde::{Deserialize, Serialize};

 use crate::error::*;
-use crate::s3_xml::{xmlns_tag, IntValue, Value};
+use crate::s3_xml::{to_xml_with_header, xmlns_tag, IntValue, Value};
 use crate::signature::verify_signed_content;

 use garage_model::bucket_table::*;
@@ -39,7 +39,7 @@ pub async fn handle_get_website(
 			redirect_all_requests_to: None,
 			routing_rules: None,
 		};
-		let xml = quick_xml::se::to_string(&wc)?;
+		let xml = to_xml_with_header(&wc)?;
 		Ok(Response::builder()
 			.status(StatusCode::OK)
 			.header(http::header::CONTENT_TYPE, "application/xml")
@@ -306,7 +306,7 @@ mod tests {
 	use quick_xml::de::from_str;

 	#[test]
-	fn test_deserialize() {
+	fn test_deserialize() -> Result<(), Error> {
 		let message = r#"<?xml version="1.0" encoding="UTF-8"?>
 <WebsiteConfiguration xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
   <ErrorDocument>
@@ -368,7 +368,12 @@ mod tests {
 			ref_value,
 			conf
 		}
-		// TODO verify result is ok
-		// TODO cycle back and verify if ok
+
+		let message2 = to_xml_with_header(&ref_value)?;
+
+		let cleanup = |c: &str| c.replace(char::is_whitespace, "");
+		assert_eq!(cleanup(message), cleanup(&message2));
+
+		Ok(())
 	}
 }
@@ -16,6 +16,12 @@ pub fn xmlns_tag<S: Serializer>(_v: &(), s: S) -> Result<S::Ok, S::Error> {
 #[derive(Debug, Serialize, Deserialize, PartialEq, Eq, PartialOrd, Ord)]
 pub struct Value(#[serde(rename = "$value")] pub String);

+impl From<&str> for Value {
+	fn from(s: &str) -> Value {
+		Value(s.to_string())
+	}
+}
+
 #[derive(Debug, Serialize, Deserialize, PartialEq, Eq, PartialOrd, Ord)]
 pub struct IntValue(#[serde(rename = "$value")] pub i64);