Rename error::Error to s3::error::Error

14 files changed, 244 insertions, 12 deletions

diff --git a/src/api/s3/api_server.rs b/src/api/s3/api_server.rs
index af9f03e7..77ac3879 100644
--- a/src/api/s3/api_server.rs
+++ b/src/api/s3/api_server.rs
@@ -14,7 +14,7 @@ use garage_util::error::Error as GarageError;
 use garage_model::garage::Garage;
 use garage_model::key_table::Key;
 
-use crate::error::*;
+use crate::s3::error::*;
 use crate::generic_server::*;
 
 use crate::signature::payload::check_payload_signature;
diff --git a/src/api/s3/bucket.rs b/src/api/s3/bucket.rs
index 6ecda2cd..d4a6b0cb 100644
--- a/src/api/s3/bucket.rs
+++ b/src/api/s3/bucket.rs
@@ -14,7 +14,7 @@ use garage_util::crdt::*;
 use garage_util::data::*;
 use garage_util::time::*;
 
-use crate::error::*;
+use crate::s3::error::*;
 use crate::s3::xml as s3_xml;
 use crate::signature::verify_signed_content;
 
diff --git a/src/api/s3/copy.rs b/src/api/s3/copy.rs
index 825b8fc0..abd90f4a 100644
--- a/src/api/s3/copy.rs
+++ b/src/api/s3/copy.rs
@@ -18,7 +18,7 @@ use garage_model::s3::block_ref_table::*;
 use garage_model::s3::object_table::*;
 use garage_model::s3::version_table::*;
 
-use crate::error::*;
+use crate::s3::error::*;
 use crate::helpers::{parse_bucket_key, resolve_bucket};
 use crate::s3::put::{decode_upload_id, get_headers};
 use crate::s3::xml::{self as s3_xml, xmlns_tag};
diff --git a/src/api/s3/cors.rs b/src/api/s3/cors.rs
index 37ea2e43..1ad4f2f8 100644
--- a/src/api/s3/cors.rs
+++ b/src/api/s3/cors.rs
@@ -9,7 +9,7 @@ use hyper::{header::HeaderName, Body, Method, Request, Response, StatusCode};
 
 use serde::{Deserialize, Serialize};
 
-use crate::error::*;
+use crate::s3::error::*;
 use crate::s3::xml::{to_xml_with_header, xmlns_tag, IntValue, Value};
 use crate::signature::verify_signed_content;
 
diff --git a/src/api/s3/delete.rs b/src/api/s3/delete.rs
index 1e3f1249..5065b285 100644
--- a/src/api/s3/delete.rs
+++ b/src/api/s3/delete.rs
@@ -8,7 +8,7 @@ use garage_util::time::*;
 use garage_model::garage::Garage;
 use garage_model::s3::object_table::*;
 
-use crate::error::*;
+use crate::s3::error::*;
 use crate::s3::xml as s3_xml;
 use crate::signature::verify_signed_content;
 
diff --git a/src/api/s3/error.rs b/src/api/s3/error.rs
new file mode 100644
index 00000000..3cb97019
--- /dev/null
+++ b/src/api/s3/error.rs
@@ -0,0 +1,231 @@
+use std::convert::TryInto;
+
+use err_derive::Error;
+use hyper::header::HeaderValue;
+use hyper::{Body, HeaderMap, StatusCode};
+
+use garage_model::helper::error::Error as HelperError;
+use garage_util::error::Error as GarageError;
+
+use crate::common_error::CommonError;
+pub use crate::common_error::{OkOrBadRequest, OkOrInternalError};
+use crate::generic_server::ApiError;
+use crate::s3::xml as s3_xml;
+
+/// Errors of this crate
+#[derive(Debug, Error)]
+pub enum Error {
+	#[error(display = "{}", _0)]
+	/// Error from common error
+	CommonError(CommonError),
+
+	// Category: cannot process
+	/// No proper api key was used, or the signature was invalid
+	#[error(display = "Forbidden: {}", _0)]
+	Forbidden(String),
+
+	/// Authorization Header Malformed
+	#[error(display = "Authorization header malformed, expected scope: {}", _0)]
+	AuthorizationHeaderMalformed(String),
+
+	/// The object requested don't exists
+	#[error(display = "Key not found")]
+	NoSuchKey,
+
+	/// The bucket requested don't exists
+	#[error(display = "Bucket not found")]
+	NoSuchBucket,
+
+	/// The multipart upload requested don't exists
+	#[error(display = "Upload not found")]
+	NoSuchUpload,
+
+	/// Tried to create a bucket that already exist
+	#[error(display = "Bucket already exists")]
+	BucketAlreadyExists,
+
+	/// Tried to delete a non-empty bucket
+	#[error(display = "Tried to delete a non-empty bucket")]
+	BucketNotEmpty,
+
+	/// Precondition failed (e.g. x-amz-copy-source-if-match)
+	#[error(display = "At least one of the preconditions you specified did not hold")]
+	PreconditionFailed,
+
+	/// Parts specified in CMU request do not match parts actually uploaded
+	#[error(display = "Parts given to CompleteMultipartUpload do not match uploaded parts")]
+	InvalidPart,
+
+	/// Parts given to CompleteMultipartUpload were not in ascending order
+	#[error(display = "Parts given to CompleteMultipartUpload were not in ascending order")]
+	InvalidPartOrder,
+
+	/// In CompleteMultipartUpload: not enough data
+	/// (here we are more lenient than AWS S3)
+	#[error(display = "Proposed upload is smaller than the minimum allowed object size")]
+	EntityTooSmall,
+
+	// Category: bad request
+	/// The request contained an invalid UTF-8 sequence in its path or in other parameters
+	#[error(display = "Invalid UTF-8: {}", _0)]
+	InvalidUtf8Str(#[error(source)] std::str::Utf8Error),
+
+	/// The request used an invalid path
+	#[error(display = "Invalid UTF-8: {}", _0)]
+	InvalidUtf8String(#[error(source)] std::string::FromUtf8Error),
+
+	/// Some base64 encoded data was badly encoded
+	#[error(display = "Invalid base64: {}", _0)]
+	InvalidBase64(#[error(source)] base64::DecodeError),
+
+	/// Bucket name is not valid according to AWS S3 specs
+	#[error(display = "Invalid bucket name")]
+	InvalidBucketName,
+
+	/// The client sent invalid XML data
+	#[error(display = "Invalid XML: {}", _0)]
+	InvalidXml(String),
+
+	/// The client sent a header with invalid value
+	#[error(display = "Invalid header value: {}", _0)]
+	InvalidHeader(#[error(source)] hyper::header::ToStrError),
+
+	/// The client sent a range header with invalid value
+	#[error(display = "Invalid HTTP range: {:?}", _0)]
+	InvalidRange(#[error(from)] (http_range::HttpRangeParseError, u64)),
+
+	/// The client asked for an invalid return format (invalid Accept header)
+	#[error(display = "Not acceptable: {}", _0)]
+	NotAcceptable(String),
+
+	/// The client sent a request for an action not supported by garage
+	#[error(display = "Unimplemented action: {}", _0)]
+	NotImplemented(String),
+}
+
+impl<T> From<T> for Error
+where
+	CommonError: From<T>,
+{
+	fn from(err: T) -> Self {
+		Error::CommonError(CommonError::from(err))
+	}
+}
+
+impl From<roxmltree::Error> for Error {
+	fn from(err: roxmltree::Error) -> Self {
+		Self::InvalidXml(format!("{}", err))
+	}
+}
+
+impl From<quick_xml::de::DeError> for Error {
+	fn from(err: quick_xml::de::DeError) -> Self {
+		Self::InvalidXml(format!("{}", err))
+	}
+}
+
+impl From<HelperError> for Error {
+	fn from(err: HelperError) -> Self {
+		match err {
+			HelperError::Internal(i) => Self::CommonError(CommonError::InternalError(i)),
+			HelperError::BadRequest(b) => Self::CommonError(CommonError::BadRequest(b)),
+			e => Self::CommonError(CommonError::BadRequest(format!("{}", e))),
+		}
+	}
+}
+
+impl From<multer::Error> for Error {
+	fn from(err: multer::Error) -> Self {
+		Self::bad_request(err)
+	}
+}
+
+impl Error {
+	pub fn aws_code(&self) -> &'static str {
+		match self {
+			Error::NoSuchKey => "NoSuchKey",
+			Error::NoSuchBucket => "NoSuchBucket",
+			Error::NoSuchUpload => "NoSuchUpload",
+			Error::BucketAlreadyExists => "BucketAlreadyExists",
+			Error::BucketNotEmpty => "BucketNotEmpty",
+			Error::PreconditionFailed => "PreconditionFailed",
+			Error::InvalidPart => "InvalidPart",
+			Error::InvalidPartOrder => "InvalidPartOrder",
+			Error::EntityTooSmall => "EntityTooSmall",
+			Error::Forbidden(_) => "AccessDenied",
+			Error::AuthorizationHeaderMalformed(_) => "AuthorizationHeaderMalformed",
+			Error::NotImplemented(_) => "NotImplemented",
+			Error::CommonError(CommonError::InternalError(
+				GarageError::Timeout
+				| GarageError::RemoteError(_)
+				| GarageError::Quorum(_, _, _, _),
+			)) => "ServiceUnavailable",
+			Error::CommonError(
+				CommonError::InternalError(_) | CommonError::Hyper(_) | CommonError::Http(_),
+			) => "InternalError",
+			_ => "InvalidRequest",
+		}
+	}
+
+	pub fn internal_error<M: ToString>(msg: M) -> Self {
+		Self::CommonError(CommonError::InternalError(GarageError::Message(
+			msg.to_string(),
+		)))
+	}
+
+	pub fn bad_request<M: ToString>(msg: M) -> Self {
+		Self::CommonError(CommonError::BadRequest(msg.to_string()))
+	}
+}
+
+impl ApiError for Error {
+	/// Get the HTTP status code that best represents the meaning of the error for the client
+	fn http_status_code(&self) -> StatusCode {
+		match self {
+			Error::CommonError(c) => c.http_status_code(),
+			Error::NoSuchKey | Error::NoSuchBucket | Error::NoSuchUpload => StatusCode::NOT_FOUND,
+			Error::BucketNotEmpty | Error::BucketAlreadyExists => StatusCode::CONFLICT,
+			Error::PreconditionFailed => StatusCode::PRECONDITION_FAILED,
+			Error::Forbidden(_) => StatusCode::FORBIDDEN,
+			Error::NotAcceptable(_) => StatusCode::NOT_ACCEPTABLE,
+			Error::InvalidRange(_) => StatusCode::RANGE_NOT_SATISFIABLE,
+			Error::NotImplemented(_) => StatusCode::NOT_IMPLEMENTED,
+			_ => StatusCode::BAD_REQUEST,
+		}
+	}
+
+	fn add_http_headers(&self, header_map: &mut HeaderMap<HeaderValue>) {
+		use hyper::header;
+		#[allow(clippy::single_match)]
+		match self {
+			Error::InvalidRange((_, len)) => {
+				header_map.append(
+					header::CONTENT_RANGE,
+					format!("bytes */{}", len)
+						.try_into()
+						.expect("header value only contain ascii"),
+				);
+			}
+			_ => (),
+		}
+	}
+
+	fn http_body(&self, garage_region: &str, path: &str) -> Body {
+		let error = s3_xml::Error {
+			code: s3_xml::Value(self.aws_code().to_string()),
+			message: s3_xml::Value(format!("{}", self)),
+			resource: Some(s3_xml::Value(path.to_string())),
+			region: Some(s3_xml::Value(garage_region.to_string())),
+		};
+		Body::from(s3_xml::to_xml_with_header(&error).unwrap_or_else(|_| {
+			r#"
+<?xml version="1.0" encoding="UTF-8"?>
+<Error>
+	<Code>InternalError</Code>
+	<Message>XML encoding of error failed</Message>
+</Error>
+			"#
+			.into()
+		}))
+	}
+}
diff --git a/src/api/s3/get.rs b/src/api/s3/get.rs
index 794bd4e9..7fa1a177 100644
--- a/src/api/s3/get.rs
+++ b/src/api/s3/get.rs
@@ -17,7 +17,7 @@ use garage_model::garage::Garage;
 use garage_model::s3::object_table::*;
 use garage_model::s3::version_table::*;
 
-use crate::error::*;
+use crate::s3::error::*;
 
 const X_AMZ_MP_PARTS_COUNT: &str = "x-amz-mp-parts-count";
 
diff --git a/src/api/s3/list.rs b/src/api/s3/list.rs
index d97aafe5..b4ba5bcd 100644
--- a/src/api/s3/list.rs
+++ b/src/api/s3/list.rs
@@ -16,7 +16,7 @@ use garage_model::s3::version_table::Version;
 use garage_table::{EmptyKey, EnumerationOrder};
 
 use crate::encoding::*;
-use crate::error::*;
+use crate::s3::error::*;
 use crate::helpers::key_after_prefix;
 use crate::s3::put as s3_put;
 use crate::s3::xml as s3_xml;
diff --git a/src/api/s3/mod.rs b/src/api/s3/mod.rs
index 3f5c1915..7b56d4d8 100644
--- a/src/api/s3/mod.rs
+++ b/src/api/s3/mod.rs
@@ -1,4 +1,5 @@
 pub mod api_server;
+pub mod error;
 
 mod bucket;
 mod copy;
diff --git a/src/api/s3/post_object.rs b/src/api/s3/post_object.rs
index 91648a19..343aa366 100644
--- a/src/api/s3/post_object.rs
+++ b/src/api/s3/post_object.rs
@@ -14,7 +14,7 @@ use serde::Deserialize;
 
 use garage_model::garage::Garage;
 
-use crate::error::*;
+use crate::s3::error::*;
 use crate::helpers::resolve_bucket;
 use crate::s3::put::{get_headers, save_stream};
 use crate::s3::xml as s3_xml;
diff --git a/src/api/s3/put.rs b/src/api/s3/put.rs
index d50e32b0..660a8858 100644
--- a/src/api/s3/put.rs
+++ b/src/api/s3/put.rs
@@ -19,7 +19,7 @@ use garage_model::s3::block_ref_table::*;
 use garage_model::s3::object_table::*;
 use garage_model::s3::version_table::*;
 
-use crate::error::*;
+use crate::s3::error::*;
 use crate::s3::xml as s3_xml;
 use crate::signature::verify_signed_content;
 
diff --git a/src/api/s3/router.rs b/src/api/s3/router.rs
index e920e162..b12c63a7 100644
--- a/src/api/s3/router.rs
+++ b/src/api/s3/router.rs
@@ -3,7 +3,7 @@ use std::borrow::Cow;
 use hyper::header::HeaderValue;
 use hyper::{HeaderMap, Method, Request};
 
-use crate::error::{Error, OkOrBadRequest};
+use crate::s3::error::{Error, OkOrBadRequest};
 use crate::helpers::Authorization;
 use crate::router_macros::{generateQueryParameters, router_match};
 
diff --git a/src/api/s3/website.rs b/src/api/s3/website.rs
index 4fc7b7bb..b2582c4b 100644
--- a/src/api/s3/website.rs
+++ b/src/api/s3/website.rs
@@ -4,7 +4,7 @@ use std::sync::Arc;
 use hyper::{Body, Request, Response, StatusCode};
 use serde::{Deserialize, Serialize};
 
-use crate::error::*;
+use crate::s3::error::*;
 use crate::s3::xml::{to_xml_with_header, xmlns_tag, IntValue, Value};
 use crate::signature::verify_signed_content;
 
diff --git a/src/api/s3/xml.rs b/src/api/s3/xml.rs
index 75ec4559..111657a0 100644
--- a/src/api/s3/xml.rs
+++ b/src/api/s3/xml.rs
@@ -1,7 +1,7 @@
 use quick_xml::se::to_string;
 use serde::{Deserialize, Serialize, Serializer};
 
-use crate::Error as ApiError;
+use crate::s3::error::Error as ApiError;
 
 pub fn to_xml_with_header<T: Serialize>(x: &T) -> Result<String, ApiError> {
 	let mut xml = r#"<?xml version="1.0" encoding="UTF-8"?>"#.to_string();