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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /third_party/rust/hyper/src/ffi/error.rs
parentInitial commit. (diff)
downloadfirefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz
firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/rust/hyper/src/ffi/error.rs')
-rw-r--r--third_party/rust/hyper/src/ffi/error.rs85
1 files changed, 85 insertions, 0 deletions
diff --git a/third_party/rust/hyper/src/ffi/error.rs b/third_party/rust/hyper/src/ffi/error.rs
new file mode 100644
index 0000000000..015e595aee
--- /dev/null
+++ b/third_party/rust/hyper/src/ffi/error.rs
@@ -0,0 +1,85 @@
+use libc::size_t;
+
+/// A more detailed error object returned by some hyper functions.
+pub struct hyper_error(crate::Error);
+
+/// A return code for many of hyper's methods.
+#[repr(C)]
+pub enum hyper_code {
+ /// All is well.
+ HYPERE_OK,
+ /// General error, details in the `hyper_error *`.
+ HYPERE_ERROR,
+ /// A function argument was invalid.
+ HYPERE_INVALID_ARG,
+ /// The IO transport returned an EOF when one wasn't expected.
+ ///
+ /// This typically means an HTTP request or response was expected, but the
+ /// connection closed cleanly without sending (all of) it.
+ HYPERE_UNEXPECTED_EOF,
+ /// Aborted by a user supplied callback.
+ HYPERE_ABORTED_BY_CALLBACK,
+ /// An optional hyper feature was not enabled.
+ #[cfg_attr(feature = "http2", allow(unused))]
+ HYPERE_FEATURE_NOT_ENABLED,
+ /// The peer sent an HTTP message that could not be parsed.
+ HYPERE_INVALID_PEER_MESSAGE,
+}
+
+// ===== impl hyper_error =====
+
+impl hyper_error {
+ fn code(&self) -> hyper_code {
+ use crate::error::Kind as ErrorKind;
+ use crate::error::User;
+
+ match self.0.kind() {
+ ErrorKind::Parse(_) => hyper_code::HYPERE_INVALID_PEER_MESSAGE,
+ ErrorKind::IncompleteMessage => hyper_code::HYPERE_UNEXPECTED_EOF,
+ ErrorKind::User(User::AbortedByCallback) => hyper_code::HYPERE_ABORTED_BY_CALLBACK,
+ // TODO: add more variants
+ _ => hyper_code::HYPERE_ERROR,
+ }
+ }
+
+ fn print_to(&self, dst: &mut [u8]) -> usize {
+ use std::io::Write;
+
+ let mut dst = std::io::Cursor::new(dst);
+
+ // A write! error doesn't matter. As much as possible will have been
+ // written, and the Cursor position will know how far that is (even
+ // if that is zero).
+ let _ = write!(dst, "{}", &self.0);
+ dst.position() as usize
+ }
+}
+
+ffi_fn! {
+ /// Frees a `hyper_error`.
+ fn hyper_error_free(err: *mut hyper_error) {
+ drop(non_null!(Box::from_raw(err) ?= ()));
+ }
+}
+
+ffi_fn! {
+ /// Get an equivalent `hyper_code` from this error.
+ fn hyper_error_code(err: *const hyper_error) -> hyper_code {
+ non_null!(&*err ?= hyper_code::HYPERE_INVALID_ARG).code()
+ }
+}
+
+ffi_fn! {
+ /// Print the details of this error to a buffer.
+ ///
+ /// The `dst_len` value must be the maximum length that the buffer can
+ /// store.
+ ///
+ /// The return value is number of bytes that were written to `dst`.
+ fn hyper_error_print(err: *const hyper_error, dst: *mut u8, dst_len: size_t) -> size_t {
+ let dst = unsafe {
+ std::slice::from_raw_parts_mut(dst, dst_len)
+ };
+ non_null!(&*err ?= 0).print_to(dst)
+ }
+}