pub struct ValidComponentAmalgamationIter<'a, C> { /* private fields */ }
Expand description
An iterator over valid components.
A ValidComponentAmalgamationIter
is a
ComponentAmalgamationIter
with a policy and a reference time.
This allows it to filter the returned components based on
information available in the components’ binding signatures. For
instance, ValidComponentAmalgamationIter::revoked
filters the
returned components by whether or not they are revoked.
ValidComponentAmalgamationIter
follows the builder pattern.
There is no need to explicitly finalize it: it already implements
the Iterator
trait.
A ValidComponentAmalgamationIter
is returned by
ComponentAmalgamationIter::with_policy
.
Examples
use openpgp::cert::prelude::*;
use openpgp::policy::StandardPolicy;
let p = &StandardPolicy::new();
// Iterate over all valid User Attributes.
for ua in cert.userids().with_policy(p, None) {
// ua is a `ValidComponentAmalgamation`, specifically, a
// `ValidUserIDAmalgamation`.
}
Implementations§
source§impl<'a, C> ValidComponentAmalgamationIter<'a, C>
impl<'a, C> ValidComponentAmalgamationIter<'a, C>
sourcepub fn revoked<T>(self, revoked: T) -> Selfwhere
T: Into<Option<bool>>,
pub fn revoked<T>(self, revoked: T) -> Selfwhere
T: Into<Option<bool>>,
Filters by whether a component is definitely revoked.
A value of None disables this filter.
If you call this function multiple times on the same iterator, only the last value is used.
This filter only checks if the component is not revoked; it does not check whether the certificate not revoked.
This filter checks whether a component’s revocation status is
RevocationStatus::Revoked
or not. The latter (i.e.,
revoked(false)
) is equivalent to:
use sequoia_openpgp as openpgp;
use openpgp::cert::prelude::*;
use openpgp::types::RevocationStatus;
use sequoia_openpgp::policy::StandardPolicy;
let p = &StandardPolicy::new();
let non_revoked_uas = cert
.user_attributes()
.with_policy(p, timestamp)
.filter(|ca| {
match ca.revocation_status() {
RevocationStatus::Revoked(_) =>
// It's definitely revoked, skip it.
false,
RevocationStatus::CouldBe(_) =>
// There is a designated revoker that we
// should check, but don't (or can't). To
// avoid a denial of service arising from fake
// revocations, we assume that the component has not
// been revoked and return it.
true,
RevocationStatus::NotAsFarAsWeKnow =>
// We have no evidence to suggest that the component
// is revoked.
true,
}
})
.collect::<Vec<_>>();
As the example shows, this filter is significantly less
flexible than using ValidComponentAmalgamation::revocation_status
.
However, this filter implements a typical policy, and does not
preclude using filter
to realize alternative policies.
Trait Implementations§
source§impl<'a, C> Debug for ValidComponentAmalgamationIter<'a, C>
impl<'a, C> Debug for ValidComponentAmalgamationIter<'a, C>
source§impl<'a, C> Iterator for ValidComponentAmalgamationIter<'a, C>where
C: Debug,
impl<'a, C> Iterator for ValidComponentAmalgamationIter<'a, C>where
C: Debug,
§type Item = ValidComponentAmalgamation<'a, C>
type Item = ValidComponentAmalgamation<'a, C>
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