Merging upstream version 1.73.0+dfsg1.

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

5 files changed, 531 insertions, 0 deletions

diff --git a/vendor/ciborium-io/.cargo-checksum.json b/vendor/ciborium-io/.cargo-checksum.json
new file mode 100644
index 000000000..92ce3f8e8
--- /dev/null
+++ b/vendor/ciborium-io/.cargo-checksum.json
@@ -0,0 +1 @@
+{"files":{"Cargo.toml":"2e8f3576263716d257f74b3f28aec5c355185cf2d37a62da35476da0b32748af","LICENSE":"c71d239df91726fc519c6eb72d318ec65820627232b2f796219e87dcf35d0ab4","README.md":"005ef797bef5dc4441d977a8dcca9783a36e3f9c0a0573a492c055080cdff6d5","src/lib.rs":"ef5797420095e3f89a610031f962889472ccba079bfaa3241a0733590bf38659"},"package":"cdf919175532b369853f5d5e20b26b43112613fd6fe7aee757e35f7a44642656"}
\ No newline at end of file
diff --git a/vendor/ciborium-io/Cargo.toml b/vendor/ciborium-io/Cargo.toml
new file mode 100644
index 000000000..f11827935
--- /dev/null
+++ b/vendor/ciborium-io/Cargo.toml
@@ -0,0 +1,42 @@
+# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g., crates.io) dependencies.
+#
+# If you are reading this file be aware that the original Cargo.toml
+# will likely look very different (and much more reasonable).
+# See Cargo.toml.orig for the original contents.
+
+[package]
+edition = "2021"
+rust-version = "1.56"
+name = "ciborium-io"
+version = "0.2.1"
+authors = ["Nathaniel McCallum <npmccallum@profian.com>"]
+description = "Simplified Read/Write traits for no_std usage"
+homepage = "https://github.com/enarx/ciborium"
+readme = "README.md"
+keywords = ["io", "read", "write"]
+categories = ["data-structures", "embedded", "no-std"]
+license = "Apache-2.0"
+repository = "https://github.com/enarx/ciborium"
+[package.metadata.docs.rs]
+all-features = true
+
+[features]
+alloc = []
+std = ["alloc"]
+[badges.github]
+repository = "enarx/ciborium"
+workflow = "test"
+
+[badges.is-it-maintained-issue-resolution]
+repository = "enarx/ciborium"
+
+[badges.is-it-maintained-open-issues]
+repository = "enarx/ciborium"
+
+[badges.maintenance]
+status = "actively-developed"
diff --git a/vendor/ciborium-io/LICENSE b/vendor/ciborium-io/LICENSE
new file mode 100644
index 000000000..261eeb9e9
--- /dev/null
+++ b/vendor/ciborium-io/LICENSE
@@ -0,0 +1,201 @@
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diff --git a/vendor/ciborium-io/README.md b/vendor/ciborium-io/README.md
new file mode 100644
index 000000000..2ba5cc68f
--- /dev/null
+++ b/vendor/ciborium-io/README.md
@@ -0,0 +1,22 @@
+[![Workflow Status](https://github.com/enarx/ciborium/workflows/test/badge.svg)](https://github.com/enarx/ciborium/actions?query=workflow%3A%22test%22)
+[![Average time to resolve an issue](https://isitmaintained.com/badge/resolution/enarx/ciborium.svg)](https://isitmaintained.com/project/enarx/ciborium "Average time to resolve an issue")
+[![Percentage of issues still open](https://isitmaintained.com/badge/open/enarx/ciborium.svg)](https://isitmaintained.com/project/enarx/ciborium "Percentage of issues still open")
+![Maintenance](https://img.shields.io/badge/maintenance-activly--developed-brightgreen.svg)
+
+# ciborium-io
+
+Simple, Low-level I/O traits
+
+This crate provides two simple traits: `Read` and `Write`. These traits
+mimic their counterparts in `std::io`, but are trimmed for simplicity
+and can be used in `no_std` and `no_alloc` environments. Since this
+crate contains only traits, inline functions and unit structs, it should
+be a zero-cost abstraction.
+
+If the `std` feature is enabled, we provide blanket implementations for
+all `std::io` types. If the `alloc` feature is enabled, we provide
+implementations for `Vec<u8>`. In all cases, you get implementations
+for byte slices. You can, of course, implement the traits for your own
+types.
+
+License: Apache-2.0
diff --git a/vendor/ciborium-io/src/lib.rs b/vendor/ciborium-io/src/lib.rs
new file mode 100644
index 000000000..fef5b7044
--- /dev/null
+++ b/vendor/ciborium-io/src/lib.rs
@@ -0,0 +1,265 @@
+// SPDX-License-Identifier: Apache-2.0
+
+//! Simple, Low-level I/O traits
+//!
+//! This crate provides two simple traits: `Read` and `Write`. These traits
+//! mimic their counterparts in `std::io`, but are trimmed for simplicity
+//! and can be used in `no_std` and `no_alloc` environments. Since this
+//! crate contains only traits, inline functions and unit structs, it should
+//! be a zero-cost abstraction.
+//!
+//! If the `std` feature is enabled, we provide blanket implementations for
+//! all `std::io` types. If the `alloc` feature is enabled, we provide
+//! implementations for `Vec<u8>`. In all cases, you get implementations
+//! for byte slices. You can, of course, implement the traits for your own
+//! types.
+
+#![cfg_attr(not(feature = "std"), no_std)]
+#![deny(missing_docs)]
+#![deny(clippy::all)]
+#![deny(clippy::cargo)]
+
+#[cfg(feature = "alloc")]
+extern crate alloc;
+
+/// A trait indicating a type that can read bytes
+///
+/// Note that this is similar to `std::io::Read`, but simplified for use in a
+/// `no_std` context.
+pub trait Read {
+    /// The error type
+    type Error;
+
+    /// Reads exactly `data.len()` bytes or fails
+    fn read_exact(&mut self, data: &mut [u8]) -> Result<(), Self::Error>;
+}
+
+/// A trait indicating a type that can write bytes
+///
+/// Note that this is similar to `std::io::Write`, but simplified for use in a
+/// `no_std` context.
+pub trait Write {
+    /// The error type
+    type Error;
+
+    /// Writes all bytes from `data` or fails
+    fn write_all(&mut self, data: &[u8]) -> Result<(), Self::Error>;
+
+    /// Flushes all output
+    fn flush(&mut self) -> Result<(), Self::Error>;
+}
+
+#[cfg(feature = "std")]
+impl<T: std::io::Read> Read for T {
+    type Error = std::io::Error;
+
+    #[inline]
+    fn read_exact(&mut self, data: &mut [u8]) -> Result<(), Self::Error> {
+        self.read_exact(data)
+    }
+}
+
+#[cfg(feature = "std")]
+impl<T: std::io::Write> Write for T {
+    type Error = std::io::Error;
+
+    #[inline]
+    fn write_all(&mut self, data: &[u8]) -> Result<(), Self::Error> {
+        self.write_all(data)
+    }
+
+    #[inline]
+    fn flush(&mut self) -> Result<(), Self::Error> {
+        self.flush()
+    }
+}
+
+#[cfg(not(feature = "std"))]
+impl<R: Read + ?Sized> Read for &mut R {
+    type Error = R::Error;
+
+    #[inline]
+    fn read_exact(&mut self, data: &mut [u8]) -> Result<(), Self::Error> {
+        (**self).read_exact(data)
+    }
+}
+
+#[cfg(not(feature = "std"))]
+impl<W: Write + ?Sized> Write for &mut W {
+    type Error = W::Error;
+
+    #[inline]
+    fn write_all(&mut self, data: &[u8]) -> Result<(), Self::Error> {
+        (**self).write_all(data)
+    }
+
+    #[inline]
+    fn flush(&mut self) -> Result<(), Self::Error> {
+        (**self).flush()
+    }
+}
+
+/// An error indicating there are no more bytes to read
+#[cfg(not(feature = "std"))]
+#[derive(Debug)]
+pub struct EndOfFile(());
+
+#[cfg(not(feature = "std"))]
+impl Read for &[u8] {
+    type Error = EndOfFile;
+
+    #[inline]
+    fn read_exact(&mut self, data: &mut [u8]) -> Result<(), Self::Error> {
+        if data.len() > self.len() {
+            return Err(EndOfFile(()));
+        }
+
+        let (prefix, suffix) = self.split_at(data.len());
+        data.copy_from_slice(prefix);
+        *self = suffix;
+        Ok(())
+    }
+}
+
+/// An error indicating that the output cannot accept more bytes
+#[cfg(not(feature = "std"))]
+#[derive(Debug)]
+pub struct OutOfSpace(());
+
+#[cfg(not(feature = "std"))]
+impl Write for &mut [u8] {
+    type Error = OutOfSpace;
+
+    #[inline]
+    fn write_all(&mut self, data: &[u8]) -> Result<(), Self::Error> {
+        if data.len() > self.len() {
+            return Err(OutOfSpace(()));
+        }
+
+        let (prefix, suffix) = core::mem::take(self).split_at_mut(data.len());
+        prefix.copy_from_slice(data);
+        *self = suffix;
+        Ok(())
+    }
+
+    #[inline]
+    fn flush(&mut self) -> Result<(), Self::Error> {
+        Ok(())
+    }
+}
+
+#[cfg(all(not(feature = "std"), feature = "alloc"))]
+impl Write for alloc::vec::Vec<u8> {
+    type Error = core::convert::Infallible;
+
+    #[inline]
+    fn write_all(&mut self, data: &[u8]) -> Result<(), Self::Error> {
+        self.extend_from_slice(data);
+        Ok(())
+    }
+
+    #[inline]
+    fn flush(&mut self) -> Result<(), Self::Error> {
+        Ok(())
+    }
+}
+
+#[cfg(test)]
+mod test {
+    use super::*;
+
+    #[test]
+    fn read_eof() {
+        let mut reader = &[1u8; 0][..];
+        let mut buffer = [0u8; 1];
+
+        reader.read_exact(&mut buffer[..]).unwrap_err();
+    }
+
+    #[test]
+    fn read_one() {
+        let mut reader = &[1u8; 1][..];
+        let mut buffer = [0u8; 1];
+
+        reader.read_exact(&mut buffer[..]).unwrap();
+        assert_eq!(buffer[0], 1);
+
+        reader.read_exact(&mut buffer[..]).unwrap_err();
+    }
+
+    #[test]
+    fn read_two() {
+        let mut reader = &[1u8; 2][..];
+        let mut buffer = [0u8; 1];
+
+        reader.read_exact(&mut buffer[..]).unwrap();
+        assert_eq!(buffer[0], 1);
+
+        reader.read_exact(&mut buffer[..]).unwrap();
+        assert_eq!(buffer[0], 1);
+
+        reader.read_exact(&mut buffer[..]).unwrap_err();
+    }
+
+    #[test]
+    #[cfg(feature = "std")]
+    fn read_std() {
+        let mut reader = std::io::repeat(1);
+        let mut buffer = [0u8; 2];
+
+        reader.read_exact(&mut buffer[..]).unwrap();
+        assert_eq!(buffer[0], 1);
+        assert_eq!(buffer[1], 1);
+    }
+
+    #[test]
+    fn write_oos() {
+        let mut writer = &mut [0u8; 0][..];
+
+        writer.write_all(&[1u8; 1][..]).unwrap_err();
+    }
+
+    #[test]
+    fn write_one() {
+        let mut buffer = [0u8; 1];
+        let mut writer = &mut buffer[..];
+
+        writer.write_all(&[1u8; 1][..]).unwrap();
+        writer.write_all(&[1u8; 1][..]).unwrap_err();
+        assert_eq!(buffer[0], 1);
+    }
+
+    #[test]
+    fn write_two() {
+        let mut buffer = [0u8; 2];
+        let mut writer = &mut buffer[..];
+
+        writer.write_all(&[1u8; 1][..]).unwrap();
+        writer.write_all(&[1u8; 1][..]).unwrap();
+        writer.write_all(&[1u8; 1][..]).unwrap_err();
+        assert_eq!(buffer[0], 1);
+        assert_eq!(buffer[1], 1);
+    }
+
+    #[test]
+    #[cfg(feature = "alloc")]
+    fn write_vec() {
+        let mut buffer = alloc::vec::Vec::new();
+
+        buffer.write_all(&[1u8; 1][..]).unwrap();
+        buffer.write_all(&[1u8; 1][..]).unwrap();
+
+        assert_eq!(buffer.len(), 2);
+        assert_eq!(buffer[0], 1);
+        assert_eq!(buffer[1], 1);
+    }
+
+    #[test]
+    #[cfg(feature = "std")]
+    fn write_std() {
+        let mut writer = std::io::sink();
+
+        writer.write_all(&[1u8; 1][..]).unwrap();
+        writer.write_all(&[1u8; 1][..]).unwrap();
+    }
+}