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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 12:47:55 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 12:47:55 +0000 |
commit | 2aadc03ef15cb5ca5cc2af8a7c08e070742f0ac4 (patch) | |
tree | 033cc839730fda84ff08db877037977be94e5e3a /vendor/der/src/asn1/ia5_string.rs | |
parent | Initial commit. (diff) | |
download | cargo-2aadc03ef15cb5ca5cc2af8a7c08e070742f0ac4.tar.xz cargo-2aadc03ef15cb5ca5cc2af8a7c08e070742f0ac4.zip |
Adding upstream version 0.70.1+ds1.upstream/0.70.1+ds1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'vendor/der/src/asn1/ia5_string.rs')
-rw-r--r-- | vendor/der/src/asn1/ia5_string.rs | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/vendor/der/src/asn1/ia5_string.rs b/vendor/der/src/asn1/ia5_string.rs new file mode 100644 index 0000000..1b06dce --- /dev/null +++ b/vendor/der/src/asn1/ia5_string.rs @@ -0,0 +1,195 @@ +//! ASN.1 `IA5String` support. + +use crate::{asn1::AnyRef, FixedTag, Result, StrRef, Tag}; +use core::{fmt, ops::Deref}; + +macro_rules! impl_ia5_string { + ($type: ty) => { + impl_ia5_string!($type,); + }; + ($type: ty, $($li: lifetime)?) => { + impl_string_type!($type, $($li),*); + + impl<$($li),*> FixedTag for $type { + const TAG: Tag = Tag::Ia5String; + } + + impl<$($li),*> fmt::Debug for $type { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + write!(f, "Ia5String({:?})", self.as_str()) + } + } + }; +} + +/// ASN.1 `IA5String` type. +/// +/// Supports the [International Alphabet No. 5 (IA5)] character encoding, i.e. +/// the lower 128 characters of the ASCII alphabet. (Note: IA5 is now +/// technically known as the International Reference Alphabet or IRA as +/// specified in the ITU-T's T.50 recommendation). +/// +/// For UTF-8, use [`Utf8StringRef`][`crate::asn1::Utf8StringRef`]. +/// +/// This is a zero-copy reference type which borrows from the input data. +/// +/// [International Alphabet No. 5 (IA5)]: https://en.wikipedia.org/wiki/T.50_%28standard%29 +#[derive(Copy, Clone, Eq, PartialEq, PartialOrd, Ord)] +pub struct Ia5StringRef<'a> { + /// Inner value + inner: StrRef<'a>, +} + +impl<'a> Ia5StringRef<'a> { + /// Create a new `IA5String`. + pub fn new<T>(input: &'a T) -> Result<Self> + where + T: AsRef<[u8]> + ?Sized, + { + let input = input.as_ref(); + + // Validate all characters are within IA5String's allowed set + if input.iter().any(|&c| c > 0x7F) { + return Err(Self::TAG.value_error()); + } + + StrRef::from_bytes(input) + .map(|inner| Self { inner }) + .map_err(|_| Self::TAG.value_error()) + } +} + +impl_ia5_string!(Ia5StringRef<'a>, 'a); + +impl<'a> Deref for Ia5StringRef<'a> { + type Target = StrRef<'a>; + + fn deref(&self) -> &Self::Target { + &self.inner + } +} + +impl<'a> From<&Ia5StringRef<'a>> for Ia5StringRef<'a> { + fn from(value: &Ia5StringRef<'a>) -> Ia5StringRef<'a> { + *value + } +} + +impl<'a> From<Ia5StringRef<'a>> for AnyRef<'a> { + fn from(internationalized_string: Ia5StringRef<'a>) -> AnyRef<'a> { + AnyRef::from_tag_and_value(Tag::Ia5String, internationalized_string.inner.into()) + } +} + +#[cfg(feature = "alloc")] +pub use self::allocation::Ia5String; + +#[cfg(feature = "alloc")] +mod allocation { + use super::Ia5StringRef; + use crate::{ + asn1::AnyRef, + referenced::{OwnedToRef, RefToOwned}, + Error, FixedTag, Result, StrOwned, Tag, + }; + use alloc::string::String; + use core::{fmt, ops::Deref}; + + /// ASN.1 `IA5String` type. + /// + /// Supports the [International Alphabet No. 5 (IA5)] character encoding, i.e. + /// the lower 128 characters of the ASCII alphabet. (Note: IA5 is now + /// technically known as the International Reference Alphabet or IRA as + /// specified in the ITU-T's T.50 recommendation). + /// + /// For UTF-8, use [`String`][`alloc::string::String`]. + /// + /// [International Alphabet No. 5 (IA5)]: https://en.wikipedia.org/wiki/T.50_%28standard%29 + #[derive(Clone, Eq, PartialEq, PartialOrd, Ord)] + pub struct Ia5String { + /// Inner value + inner: StrOwned, + } + + impl Ia5String { + /// Create a new `IA5String`. + pub fn new<T>(input: &T) -> Result<Self> + where + T: AsRef<[u8]> + ?Sized, + { + let input = input.as_ref(); + Ia5StringRef::new(input)?; + + StrOwned::from_bytes(input) + .map(|inner| Self { inner }) + .map_err(|_| Self::TAG.value_error()) + } + } + + impl_ia5_string!(Ia5String); + + impl Deref for Ia5String { + type Target = StrOwned; + + fn deref(&self) -> &Self::Target { + &self.inner + } + } + + impl<'a> From<Ia5StringRef<'a>> for Ia5String { + fn from(international_string: Ia5StringRef<'a>) -> Ia5String { + let inner = international_string.inner.into(); + Self { inner } + } + } + + impl<'a> From<&'a Ia5String> for AnyRef<'a> { + fn from(international_string: &'a Ia5String) -> AnyRef<'a> { + AnyRef::from_tag_and_value(Tag::Ia5String, (&international_string.inner).into()) + } + } + + impl<'a> RefToOwned<'a> for Ia5StringRef<'a> { + type Owned = Ia5String; + fn ref_to_owned(&self) -> Self::Owned { + Ia5String { + inner: self.inner.ref_to_owned(), + } + } + } + + impl OwnedToRef for Ia5String { + type Borrowed<'a> = Ia5StringRef<'a>; + fn owned_to_ref(&self) -> Self::Borrowed<'_> { + Ia5StringRef { + inner: self.inner.owned_to_ref(), + } + } + } + + impl TryFrom<String> for Ia5String { + type Error = Error; + + fn try_from(input: String) -> Result<Self> { + Ia5StringRef::new(&input)?; + + StrOwned::new(input) + .map(|inner| Self { inner }) + .map_err(|_| Self::TAG.value_error()) + } + } +} + +#[cfg(test)] +mod tests { + use super::Ia5StringRef; + use crate::Decode; + use hex_literal::hex; + + #[test] + fn parse_bytes() { + let example_bytes = hex!("16 0d 74 65 73 74 31 40 72 73 61 2e 63 6f 6d"); + let internationalized_string = Ia5StringRef::from_der(&example_bytes).unwrap(); + assert_eq!(internationalized_string.as_str(), "test1@rsa.com"); + } +} |