Struct der_parser::ber::BerObject

source ·
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).

Fields§

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

Implementations§

source§

impl<'a> BerObject<'a>

source

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.

source

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)

source

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

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

source

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

Set a tag for the BER object

source

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

Build a DER sequence object from a vector of DER objects

source

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

Build a DER set object from a vector of DER objects

source

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

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)
);
source

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

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)
);
source

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

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)
);
source

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

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)
);
source

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

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

source

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

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

source

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

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

source

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

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

source

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

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

source

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

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

source

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

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

source

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

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

source

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

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

source

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

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.

source

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

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.

source

pub const fn class(&self) -> Class

Get the BER object header’s class.

source

pub const fn tag(&self) -> Tag

Get the BER object header’s tag.

source

pub const fn length(&self) -> Length

Get the BER object header’s length.

source

pub const fn is_universal(&self) -> bool

Test if object class is Universal

source

pub const fn is_application(&self) -> bool

Test if object class is Application

source

pub const fn is_contextspecific(&self) -> bool

Test if object class is Context-specific

source

pub fn is_private(&self) -> bool

Test if object class is Private

source

pub const fn is_primitive(&self) -> bool

Test if object is primitive

source

pub const fn is_constructed(&self) -> bool

Test if object is constructed

source

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

Return error if class is not the expected class

source

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

Return error if tag is not the expected tag

source

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

Return error if object is not constructed

source

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

Return error if object is not primitive

source§

impl<'a> BerObject<'a>

source

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

Available on crate feature bigint only.

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()))
source

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

Available on crate feature bigint only.

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()))
source§

impl<'a> BerObject<'a>

source

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

source§

impl<'a> BerObject<'a>

source

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

source§

impl<'a> BerObject<'a>

source

pub fn to_vec(&self) -> Result<Vec<u8>, GenError>

Available on crate feature serialize only.

Attempt to encode object as BER

Note that the encoding will not check that the values of the BerObject fields are correct. The length is automatically calculated, and the field is ignored.

Tagged objects will be encoded as EXPLICIT.

This function is only available if the serialize feature is enabled.

Trait Implementations§

source§

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

source§

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

Returns a copy of the value. Read more
1.0.0 · source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
source§

impl<'a> Debug for BerObject<'a>

source§

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

Formats the value using the given formatter. Read more
source§

impl<'a> From<BerObjectContent<'a>> for BerObject<'a>

Build a DER object from a BerObjectContent.

source§

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

Converts to this type from the input type.
source§

impl<'a> From<Oid<'a>> for BerObject<'a>

Build a DER object from an OID.

source§

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

Converts to this type from the input type.
source§

impl<'a> Index<usize> for BerObject<'a>

§

type Output = BerObject<'a>

The returned type after indexing.
source§

fn index(&self, idx: usize) -> &BerObject<'a>

Performs the indexing (container[index]) operation. Read more
source§

impl<'a> IntoIterator for BerObject<'a>

§

type Item = BerObject<'a>

The type of the elements being iterated over.
§

type IntoIter = BerObjectIntoIterator<'a>

Which kind of iterator are we turning this into?
source§

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value. Read more
source§

impl<'a> PartialEq<BerObject<'a>> for BerObject<'a>

source§

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

This method tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
source§

impl<'a> StructuralPartialEq for BerObject<'a>

Auto Trait Implementations§

§

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

§

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

§

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

§

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

§

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

Blanket Implementations§

source§

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

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

impl<'a, T, E> AsTaggedExplicit<'a, E> for Twhere T: 'a,

source§

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

source§

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

source§

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

source§

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

const: unstable · source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

impl<T> BorrowMut<T> for Twhere T: ?Sized,

const: unstable · source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
source§

impl<T> From<T> for T

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

impl<T, U> Into<U> for Twhere U: From<T>,

const: unstable · source§

fn into(self) -> U

Calls U::from(self).

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

source§

impl<T> ToOwned for Twhere T: Clone,

§

type Owned = T

The resulting type after obtaining ownership.
source§

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
source§

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
source§

impl<T, U> TryFrom<U> for Twhere U: Into<T>,

§

type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
source§

impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
const: unstable · source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.