Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 145 insertions, 0 deletions

diff --git a/third_party/rust/hyper/src/proto/mod.rs b/third_party/rust/hyper/src/proto/mod.rs
new file mode 100644
index 0000000000..7268e21265
--- /dev/null
+++ b/third_party/rust/hyper/src/proto/mod.rs
@@ -0,0 +1,145 @@
+//! Pieces pertaining to the HTTP message protocol.
+use http::{HeaderMap, Method, StatusCode, Uri, Version};
+
+pub(crate) use self::body_length::DecodedLength;
+pub(crate) use self::h1::{dispatch, Conn, ServerTransaction};
+
+pub(crate) mod h1;
+pub(crate) mod h2;
+
+/// An Incoming Message head. Includes request/status line, and headers.
+#[derive(Clone, Debug, Default, PartialEq)]
+pub struct MessageHead<S> {
+    /// HTTP version of the message.
+    pub version: Version,
+    /// Subject (request line or status line) of Incoming message.
+    pub subject: S,
+    /// Headers of the Incoming message.
+    pub headers: HeaderMap,
+}
+
+/// An incoming request message.
+pub type RequestHead = MessageHead<RequestLine>;
+
+#[derive(Debug, Default, PartialEq)]
+pub struct RequestLine(pub Method, pub Uri);
+
+/// An incoming response message.
+pub type ResponseHead = MessageHead<StatusCode>;
+
+#[derive(Debug)]
+pub enum BodyLength {
+    /// Content-Length
+    Known(u64),
+    /// Transfer-Encoding: chunked (if h1)
+    Unknown,
+}
+
+/// Status of when a Disaptcher future completes.
+pub(crate) enum Dispatched {
+    /// Dispatcher completely shutdown connection.
+    Shutdown,
+    /// Dispatcher has pending upgrade, and so did not shutdown.
+    Upgrade(crate::upgrade::Pending),
+}
+
+/// A separate module to encapsulate the invariants of the DecodedLength type.
+mod body_length {
+    use std::fmt;
+
+    #[derive(Clone, Copy, PartialEq, Eq)]
+    pub(crate) struct DecodedLength(u64);
+
+    const MAX_LEN: u64 = std::u64::MAX - 2;
+
+    impl DecodedLength {
+        pub(crate) const CLOSE_DELIMITED: DecodedLength = DecodedLength(::std::u64::MAX);
+        pub(crate) const CHUNKED: DecodedLength = DecodedLength(::std::u64::MAX - 1);
+        pub(crate) const ZERO: DecodedLength = DecodedLength(0);
+
+        #[cfg(test)]
+        pub(crate) fn new(len: u64) -> Self {
+            debug_assert!(len <= MAX_LEN);
+            DecodedLength(len)
+        }
+
+        /// Takes the length as a content-length without other checks.
+        ///
+        /// Should only be called if previously confirmed this isn't
+        /// CLOSE_DELIMITED or CHUNKED.
+        #[inline]
+        pub(crate) fn danger_len(self) -> u64 {
+            debug_assert!(self.0 < Self::CHUNKED.0);
+            self.0
+        }
+
+        /// Converts to an Option<u64> representing a Known or Unknown length.
+        pub(crate) fn into_opt(self) -> Option<u64> {
+            match self {
+                DecodedLength::CHUNKED | DecodedLength::CLOSE_DELIMITED => None,
+                DecodedLength(known) => Some(known),
+            }
+        }
+
+        /// Checks the `u64` is within the maximum allowed for content-length.
+        pub(crate) fn checked_new(len: u64) -> Result<Self, crate::error::Parse> {
+            if len <= MAX_LEN {
+                Ok(DecodedLength(len))
+            } else {
+                warn!("content-length bigger than maximum: {} > {}", len, MAX_LEN);
+                Err(crate::error::Parse::TooLarge)
+            }
+        }
+
+        pub(crate) fn sub_if(&mut self, amt: u64) {
+            match *self {
+                DecodedLength::CHUNKED | DecodedLength::CLOSE_DELIMITED => (),
+                DecodedLength(ref mut known) => {
+                    *known -= amt;
+                }
+            }
+        }
+    }
+
+    impl fmt::Debug for DecodedLength {
+        fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+            match *self {
+                DecodedLength::CLOSE_DELIMITED => f.write_str("CLOSE_DELIMITED"),
+                DecodedLength::CHUNKED => f.write_str("CHUNKED"),
+                DecodedLength(n) => f.debug_tuple("DecodedLength").field(&n).finish(),
+            }
+        }
+    }
+
+    impl fmt::Display for DecodedLength {
+        fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+            match *self {
+                DecodedLength::CLOSE_DELIMITED => f.write_str("close-delimited"),
+                DecodedLength::CHUNKED => f.write_str("chunked encoding"),
+                DecodedLength::ZERO => f.write_str("empty"),
+                DecodedLength(n) => write!(f, "content-length ({} bytes)", n),
+            }
+        }
+    }
+
+    #[cfg(test)]
+    mod tests {
+        use super::*;
+
+        #[test]
+        fn sub_if_known() {
+            let mut len = DecodedLength::new(30);
+            len.sub_if(20);
+
+            assert_eq!(len.0, 10);
+        }
+
+        #[test]
+        fn sub_if_chunked() {
+            let mut len = DecodedLength::CHUNKED;
+            len.sub_if(20);
+
+            assert_eq!(len, DecodedLength::CHUNKED);
+        }
+    }
+}