Struct Audience 

pub struct Audience(/* private fields */);

One entry of a token’s aud claim.

Deliberately not a ResourceUri. RFC 9728 §2 requires a protected- resource identifier to be an absolute URI, and ResourceUri enforces that, but RFC 7519 §4.1.3 puts no such requirement on aud: it is defined as a StringOrURI, and an authorization server is entitled to mint any string it likes. Microsoft Entra’s v2.0 tokens carry the web API’s client ID — a bare GUID with no scheme at all — which ResourceUri::new refuses.

Modelling aud as ResourceUri therefore loses two things at once. A policy cannot name a GUID, so there is nowhere to say “this server accepts this client ID”; and TokenClaims::with_audience_string drops every entry that does not parse, so such a token arrives with an empty audience and is refused no matter how the policy is configured. One type that holds the string fixes both.

Comparison is exact, case-sensitive, and never canonicalised — RFC 7519 §4.1.3 defines aud as case-sensitive strings, and a value that canonicalises to something else would be a different identifier to the server that minted it.

Implementations

impl Audience

pub fn new(value: impl AsRef<str>) -> Self

An audience entry from value, kept verbatim apart from trimming surrounding whitespace.

Never fails. Anything that is not empty is a legal aud, and refusing a value the authorization server chose to mint is this type’s whole reason for existing.

pub fn as_str(&self) -> &str

The entry as the authorization server wrote it.

Trait Implementations

impl Clone for Audience

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Audience

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

Formats the value using the given formatter.

impl Display for Audience

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

Formats the value using the given formatter.

impl Eq for Audience

impl From<&ResourceUri> for Audience

fn from(value: &ResourceUri) -> Self

The canonical form, so a resource identifier and the audience a token carries for it compare equal however the token spelled it.

impl From<&str> for Audience

fn from(value: &str) -> Self

Converts to this type from the input type.

impl From<ResourceUri> for Audience

fn from(value: ResourceUri) -> Self

Converts to this type from the input type.

impl From<String> for Audience

fn from(value: String) -> Self

Converts to this type from the input type.

impl Hash for Audience

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for Audience

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for Audience

fn eq(&self, other: &Self) -> bool

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for Audience

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for Audience