removed mime_multipart dependency and replicated required functionality

This was done to remove a crypto dependency in the textnonce crate.
Most functionality from mime_multipart has been copied with the relevant
copyright and licensing. mime_multipart functions replicated into
 multipart/related, and moved multipart/related.rs functions into a new
directory.

Cargo.toml

@@ -16,7 +16,7 @@ repository = "Metaswitch/swagger-rs"
 [features]
 default = ["serdejson"]
 multipart_form = ["mime"]
-multipart_related = ["mime_multipart", "hyper_0_10", "mime_0_2"]
+multipart_related = ["hyper_0_10", "mime_0_2", "httparse", "tempdir", "log", "encoding", "buf-read-ext"]
 serdejson = ["serde", "serde_json"]
 server = ["hyper/server"]
 http1 = ["hyper/http1"]
@@ -49,8 +49,12 @@ mime = { version = "0.3", optional = true }
 
 # multipart/related
 hyper_0_10 = {package = "hyper", version = "0.10", default-features = false, optional=true}
-mime_multipart = {version = "0.6", optional = true}
 mime_0_2 = { package = "mime", version = "0.2.6", optional = true }
+httparse = { version = "1.3", optional = true }
+tempdir = { version = "0.3", optional = true }
+log = { version = "0.4", optional = true }
+encoding = { version = "0.2", optional = true }
+buf-read-ext = { version = "0.4", optional = true }
 
 # UDS (Unix Domain Sockets)
 tokio = { version = "1.0", default-features = false, optional = true }

src/multipart/related/error.rs

@@ -0,0 +1,132 @@
+//! Copyright 2016 mime-multipart Developers
+//
+// Licensed under the Apache License, Version 2.0, <LICENSE-APACHE or
+// http://apache.org/licenses/LICENSE-2.0> or the MIT license <LICENSE-MIT or
+// http://opensource.org/licenses/MIT>, at your option. This file may not be
+// copied, modified, or distributed except according to those terms.
+//
+// File defining Error enum used in the module.
+
+use std::borrow::Cow;
+use std::error::Error as StdError;
+use std::fmt::{self, Display};
+use std::io;
+use std::string::FromUtf8Error;
+
+use httparse;
+use hyper_0_10;
+
+/// An error type for the `mime-multipart` crate.
+pub enum Error {
+    /// The Hyper request did not have a Content-Type header.
+    NoRequestContentType,
+    /// The Hyper request Content-Type top-level Mime was not `Multipart`.
+    NotMultipart,
+    /// The Content-Type header failed to specify boundary token.
+    BoundaryNotSpecified,
+    /// A multipart section contained only partial headers.
+    PartialHeaders,
+    /// The request headers ended pre-maturely.
+    EofInMainHeaders,
+    /// The request body ended prior to reaching the expected starting boundary.
+    EofBeforeFirstBoundary,
+    /// Missing CRLF after boundary.
+    NoCrLfAfterBoundary,
+    /// The request body ended prematurely while parsing headers of a multipart part.
+    EofInPartHeaders,
+    /// The request body ended prematurely while streaming a file part.
+    EofInFile,
+    /// The request body ended prematurely while reading a multipart part.
+    EofInPart,
+    /// An HTTP parsing error from a multipart section.
+    Httparse(httparse::Error),
+    /// An I/O error.
+    Io(io::Error),
+    /// An error was returned from Hyper.
+    Hyper(hyper_0_10::Error),
+    /// An error occurred during UTF-8 processing.
+    Utf8(FromUtf8Error),
+    /// An error occurred during character decoding
+    Decoding(Cow<'static, str>),
+}
+
+impl From<io::Error> for Error {
+    fn from(err: io::Error) -> Error {
+        Error::Io(err)
+    }
+}
+
+impl From<httparse::Error> for Error {
+    fn from(err: httparse::Error) -> Error {
+        Error::Httparse(err)
+    }
+}
+
+impl From<hyper_0_10::Error> for Error {
+    fn from(err: hyper_0_10::Error) -> Error {
+        Error::Hyper(err)
+    }
+}
+
+impl From<FromUtf8Error> for Error {
+    fn from(err: FromUtf8Error) -> Error {
+        Error::Utf8(err)
+    }
+}
+
+impl Display for Error {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        match *self {
+            Error::Httparse(ref e) => format!("Httparse: {:?}", e).fmt(f),
+            Error::Io(ref e) => format!("Io: {}", e).fmt(f),
+            Error::Hyper(ref e) => format!("Hyper: {}", e).fmt(f),
+            Error::Utf8(ref e) => format!("Utf8: {}", e).fmt(f),
+            Error::Decoding(ref e) => format!("Decoding: {}", e).fmt(f),
+            _ => format!("{}", self).fmt(f),
+        }
+    }
+}
+
+impl fmt::Debug for Error {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "{}", self)?;
+        if self.source().is_some() {
+            write!(f, ": {:?}", self.source().unwrap())?; // recurse
+        }
+        Ok(())
+    }
+}
+
+impl StdError for Error {
+    fn description(&self) -> &str {
+        match *self {
+            Error::NoRequestContentType => "The Hyper request did not have a Content-Type header.",
+            Error::NotMultipart => {
+                "The Hyper request Content-Type top-level Mime was not multipart."
+            }
+            Error::BoundaryNotSpecified => {
+                "The Content-Type header failed to specify a boundary token."
+            }
+            Error::PartialHeaders => "A multipart section contained only partial headers.",
+            Error::EofInMainHeaders => "The request headers ended pre-maturely.",
+            Error::EofBeforeFirstBoundary => {
+                "The request body ended prior to reaching the expected starting boundary."
+            }
+            Error::NoCrLfAfterBoundary => "Missing CRLF after boundary.",
+            Error::EofInPartHeaders => {
+                "The request body ended prematurely while parsing headers of a multipart part."
+            }
+            Error::EofInFile => "The request body ended prematurely while streaming a file part.",
+            Error::EofInPart => {
+                "The request body ended prematurely while reading a multipart part."
+            }
+            Error::Httparse(_) => {
+                "A parse error occurred while parsing the headers of a multipart section."
+            }
+            Error::Io(_) => "An I/O error occurred.",
+            Error::Hyper(_) => "A Hyper error occurred.",
+            Error::Utf8(_) => "A UTF-8 error occurred.",
+            Error::Decoding(_) => "A decoding error occurred.",
+        }
+    }
+}

src/multipart/related/mock.rs

@@ -0,0 +1,101 @@
+//! Code taken from Hyper, stripped down and with modification.
+//!
+//! See [https://github.com/hyperium/hyper](Hyper) for more information
+
+// Copyright (c) 2014 Sean McArthur
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+use std::fmt;
+use std::io::{self, Cursor, Read, Write};
+use std::net::SocketAddr;
+use std::time::Duration;
+
+use hyper_0_10::net::NetworkStream;
+
+pub struct MockStream {
+    pub read: Cursor<Vec<u8>>,
+    pub write: Vec<u8>,
+}
+
+impl Clone for MockStream {
+    fn clone(&self) -> MockStream {
+        MockStream {
+            read: Cursor::new(self.read.get_ref().clone()),
+            write: self.write.clone(),
+        }
+    }
+}
+
+impl fmt::Debug for MockStream {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(
+            f,
+            "MockStream {{ read: {:?}, write: {:?} }}",
+            self.read.get_ref(),
+            self.write
+        )
+    }
+}
+
+impl PartialEq for MockStream {
+    fn eq(&self, other: &MockStream) -> bool {
+        self.read.get_ref() == other.read.get_ref() && self.write == other.write
+    }
+}
+
+impl MockStream {
+    #[allow(dead_code)]
+    pub fn with_input(input: &[u8]) -> MockStream {
+        MockStream {
+            read: Cursor::new(input.to_vec()),
+            write: vec![],
+        }
+    }
+}
+
+impl Read for MockStream {
+    fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
+        self.read.read(buf)
+    }
+}
+
+impl Write for MockStream {
+    fn write(&mut self, msg: &[u8]) -> io::Result<usize> {
+        Write::write(&mut self.write, msg)
+    }
+
+    fn flush(&mut self) -> io::Result<()> {
+        Ok(())
+    }
+}
+
+impl NetworkStream for MockStream {
+    fn peer_addr(&mut self) -> io::Result<SocketAddr> {
+        Ok("127.0.0.1:1337".parse().unwrap())
+    }
+
+    fn set_read_timeout(&self, _: Option<Duration>) -> io::Result<()> {
+        Ok(())
+    }
+
+    fn set_write_timeout(&self, _: Option<Duration>) -> io::Result<()> {
+        Ok(())
+    }
+}