Struct BerObject

pub struct BerObject<'a> {
    pub header: Header<'a>,
    pub content: BerObjectContent<'a>,
}
Expand description

Representation of a BER-encoded (X.690) object

A BER object is composed of a header describing the object class, type and length, and the content.

Note that the content may sometimes not match the header tag (for ex when parsing IMPLICIT tagged values).

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§header: Header<'a>§content: BerObjectContent<'a>

Implementations§

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impl<'a> BerObject<'a>

pub const fn from_header_and_content<'o>( header: Header<'o>, content: BerObjectContent<'o>, ) -> BerObject<'o>

Build a BerObject from a header and content.

Note: values are not checked, so the tag can be different from the real content, or flags can be invalid.

pub const fn from_obj(c: BerObjectContent<'_>) -> BerObject<'_>

Build a BerObject from its content, using default flags (no class, correct tag, and constructed flag set only for Set and Sequence)

pub const fn from_int_slice(i: &'a [u8]) -> BerObject<'a>

Build a DER integer object from a slice containing an encoded integer

pub fn set_raw_tag(self, raw_tag: Option<&'a [u8]>) -> BerObject<'a>

Set a tag for the BER object

pub const fn from_seq(l: Vec<BerObject<'_>>) -> BerObject<'_>

Build a DER sequence object from a vector of DER objects

pub const fn from_set(l: Vec<BerObject<'_>>) -> BerObject<'_>

Build a DER set object from a vector of DER objects

pub fn as_i64(&self) -> Result<i64, Error>

Attempt to read a signed integer value from DER object.

This can fail if the object is not an integer, or if it is too large.

§Examples
let der_int  = BerObject::from_int_slice(b"\x80");
assert_eq!(
    der_int.as_i64(),
    Ok(-128)
);

pub fn as_i32(&self) -> Result<i32, Error>

Attempt to read a signed integer value from DER object.

This can fail if the object is not an integer, or if it is too large.

§Examples
let der_int  = BerObject::from_int_slice(b"\x80");
assert_eq!(
    der_int.as_i32(),
    Ok(-128)
);

pub fn as_u64(&self) -> Result<u64, Error>

Attempt to read integer value from DER object.

This can fail if the object is not an unsigned integer, or if it is too large.

§Examples
let der_int  = BerObject::from_int_slice(b"\x01\x00\x01");
assert_eq!(
    der_int.as_u64(),
    Ok(0x10001)
);

pub fn as_u32(&self) -> Result<u32, Error>

Attempt to read integer value from DER object.

This can fail if the object is not an unsigned integer, or if it is too large.

§Examples
let der_int  = BerObject::from_obj(BerObjectContent::Integer(b"\x01\x00\x01"));
assert_eq!(
    der_int.as_u32(),
    Ok(0x10001)
);

pub fn as_bool(&self) -> Result<bool, Error>

Attempt to read integer value from DER object. This can fail if the object is not a boolean.

pub fn as_oid(&self) -> Result<&Oid<'a>, Error>

Attempt to read an OID value from DER object. This can fail if the object is not an OID.

pub fn as_oid_val(&self) -> Result<Oid<'a>, Error>

Attempt to read an OID value from DER object. This can fail if the object is not an OID.

pub fn as_optional(&self) -> Result<Option<&BerObject<'a>>, Error>

Attempt to get a reference on the content from an optional object. This can fail if the object is not optional.

pub fn as_tagged(&self) -> Result<(Class, Tag, &BerObject<'a>), Error>

Attempt to get a reference on the content from a tagged object. This can fail if the object is not tagged.

pub fn as_bitstring_ref(&self) -> Result<&BitStringObject<'_>, Error>

Attempt to read a reference to a BitString value from DER object. This can fail if the object is not an BitString.

Note that this function returns a reference to the BitString. To get an owned value, use as_bitstring

pub fn as_bitstring(&self) -> Result<BitStringObject<'a>, Error>

Attempt to read a BitString value from DER object. This can fail if the object is not an BitString.

pub fn as_sequence(&self) -> Result<&Vec<BerObject<'a>>, Error>

Attempt to extract the list of objects from a DER sequence. This can fail if the object is not a sequence.

pub fn as_set(&self) -> Result<&Vec<BerObject<'a>>, Error>

Attempt to extract the list of objects from a DER set. This can fail if the object is not a set.

pub fn as_slice(&self) -> Result<&'a [u8], Error>

Attempt to get the content from a DER object, as a slice. This can fail if the object does not contain a type directly equivalent to a slice (e.g a sequence). This function mostly concerns string types, integers, or unknown DER objects.

pub fn as_str(&self) -> Result<&'a str, Error>

Attempt to get the content from a DER object, as a str. This can fail if the object does not contain a string type.

Only some string types are considered here. Other string types can be read using as_slice.

pub const fn class(&self) -> Class

Get the BER object header’s class.

pub const fn tag(&self) -> Tag

Get the BER object header’s tag.

pub const fn length(&self) -> Length

Get the BER object header’s length.

pub const fn is_universal(&self) -> bool

Test if object class is Universal

pub const fn is_application(&self) -> bool

Test if object class is Application

pub const fn is_contextspecific(&self) -> bool

Test if object class is Context-specific

pub fn is_private(&self) -> bool

Test if object class is Private

pub const fn is_primitive(&self) -> bool

Test if object is primitive

pub const fn is_constructed(&self) -> bool

Test if object is constructed

pub const fn assert_class(&self, class: Class) -> Result<(), Error>

Return error if class is not the expected class

pub const fn assert_tag(&self, tag: Tag) -> Result<(), Error>

Return error if tag is not the expected tag

pub const fn assert_constructed(&self) -> Result<(), Error>

Return error if object is not constructed

pub const fn assert_primitive(&self) -> Result<(), Error>

Return error if object is not primitive

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impl BerObject<'_>

pub fn as_bigint(&self) -> Result<BigInt, Error>

Attempt to read an integer value from this object.

This can fail if the object is not an integer.

§Examples
use der_parser::ber::*;

let data = &[0x02, 0x03, 0x01, 0x00, 0x01];

let (_, object) = parse_ber_integer(data).expect("parsing failed");
assert_eq!(object.as_bigint(), Ok(65537.into()))

pub fn as_biguint(&self) -> Result<BigUint, Error>

Attempt to read a positive integer value from this object.

This can fail if the object is not an integer, or is negative.

§Examples
use der_parser::ber::*;

let data = &[0x02, 0x03, 0x01, 0x00, 0x01];

let (_, object) = parse_ber_integer(data).expect("parsing failed");
assert_eq!(object.as_biguint(), Ok(65537_u32.into()))
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impl<'a> BerObject<'a>

pub fn ref_iter(&'a self) -> BerObjectRefIterator<'a>

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impl<'a> BerObject<'a>

pub fn as_pretty(&'a self, indent: usize, increment: usize) -> PrettyBer<'a>

Trait Implementations§

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impl<'a> Clone for BerObject<'a>

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fn clone(&self) -> BerObject<'a>

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<'a> Debug for BerObject<'a>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl<'a> From<BerObjectContent<'a>> for BerObject<'a>

Build a DER object from a BerObjectContent.

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fn from(obj: BerObjectContent<'a>) -> BerObject<'a>

Converts to this type from the input type.
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impl<'a> From<Oid<'a>> for BerObject<'a>

Build a DER object from an OID.

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fn from(oid: Oid<'a>) -> BerObject<'a>

Converts to this type from the input type.
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impl<'a> Index<usize> for BerObject<'a>

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type Output = BerObject<'a>

The returned type after indexing.
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fn index(&self, idx: usize) -> &BerObject<'a>

Performs the indexing (container[index]) operation. Read more
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impl<'a> IntoIterator for BerObject<'a>

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type Item = BerObject<'a>

The type of the elements being iterated over.
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type IntoIter = BerObjectIntoIterator<'a>

Which kind of iterator are we turning this into?
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fn into_iter(self) -> <BerObject<'a> as IntoIterator>::IntoIter

Creates an iterator from a value. Read more
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impl<'a> PartialEq for BerObject<'a>

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fn eq(&self, other: &BerObject<'a>) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<'a, 'b> TryFrom<&'b Any<'a>> for BerObject<'a>

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type Error = Error

The type returned in the event of a conversion error.
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fn try_from( any: &'b Any<'a>, ) -> Result<BerObject<'a>, <BerObject<'a> as TryFrom<&'b Any<'a>>>::Error>

Performs the conversion.
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impl<'a> TryFrom<Any<'a>> for BerObject<'a>

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type Error = Error

The type returned in the event of a conversion error.
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fn try_from( any: Any<'a>, ) -> Result<BerObject<'a>, <BerObject<'a> as TryFrom<Any<'a>>>::Error>

Performs the conversion.
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impl<'a> StructuralPartialEq for BerObject<'a>

Auto Trait Implementations§

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impl<'a> Freeze for BerObject<'a>

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impl<'a> RefUnwindSafe for BerObject<'a>

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impl<'a> Send for BerObject<'a>

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impl<'a> Sync for BerObject<'a>

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impl<'a> Unpin for BerObject<'a>

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impl<'a> UnwindSafe for BerObject<'a>

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<'a, T, E> AsTaggedExplicit<'a, E> for T
where T: 'a,

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fn explicit(self, class: Class, tag: u32) -> TaggedParser<'a, Explicit, Self, E>

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impl<'a, T, E> AsTaggedImplicit<'a, E> for T
where T: 'a,

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fn implicit( self, class: Class, constructed: bool, tag: u32, ) -> TaggedParser<'a, Implicit, Self, E>

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<'a, T, E> FromBer<'a, E> for T
where T: TryFrom<Any<'a>, Error = E>, E: From<Error>,

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fn from_ber(bytes: &'a [u8]) -> Result<(&'a [u8], T), Err<E>>

Attempt to parse input bytes into a BER object
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impl<T> FutureExt for T

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fn with_context(self, otel_cx: Context) -> WithContext<Self>

Attaches the provided Context to this type, returning a WithContext wrapper. Read more
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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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Dereferences the given pointer. Read more
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Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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where T: Policy<B, E>, P: Policy<B, E>,

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impl<T, U> RamaTryInto<U> for T
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