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use core::fmt;
#[cfg(feature = "dev")]
use arbitrary::Arbitrary;
use willow_data_model::prelude as wdm;
use crate::prelude::*;
wrapper! {
/// An entry, together with an authorisation token that may or may not [authorise](https://willowprotocol.org/specs/data-model/index.html#is_authorised_write) the entry.
///
/// ```
/// use rand::rngs::OsRng;
/// use willow25::prelude::*;
/// use willow25::authorisation::PossiblyAuthorisedEntry;
///
/// # #[cfg(feature = "dev")] {
/// let mut csprng = OsRng;
/// let (subspace_id, secret) = randomly_generate_subspace(&mut csprng);
/// let namespace_id = NamespaceId::from_bytes(&[17; 32]);
///
/// let my_entry = Entry::builder()
/// .namespace_id(namespace_id.clone())
/// .subspace_id(subspace_id.clone())
/// .path(path!("/ideas"))
/// .timestamp(12345)
/// .payload(b"chocolate with mustard")
/// .build().unwrap();
///
/// let mut cap = WriteCapability::new_communal(
/// namespace_id.clone(),
/// subspace_id.clone(),
/// );
///
/// let auth_token = AuthorisationToken::new_for_entry(&my_entry, &cap, &secret).unwrap();
///
/// let pae = PossiblyAuthorisedEntry::new(
/// my_entry.clone(),
/// auth_token,
/// );
/// assert!(pae.into_authorised_entry().is_ok());
/// # }
/// ```
///
/// [Specification](https://willowprotocol.org/specs/data-model/index.html#PossiblyAuthorisedEntry)
#[derive(PartialEq, Eq, Clone)]
#[cfg_attr(feature = "dev", derive(Arbitrary))]
PossiblyAuthorisedEntry; wdm::PossiblyAuthorisedEntry<MCL, MCC, MPL, NamespaceId, SubspaceId, PayloadDigest, AuthorisationToken>
}
impl fmt::Debug for PossiblyAuthorisedEntry {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
self.0.fmt(f)
}
}
impl PossiblyAuthorisedEntry {
/// Creates a new [`PossiblyAuthorisedEntry`] from an [`Entry`] and an [`AuthorisationToken`].
pub fn new(entry: Entry, authorisation_token: AuthorisationToken) -> Self {
wdm::PossiblyAuthorisedEntry::<
MCL,
MCC,
MPL,
NamespaceId,
SubspaceId,
PayloadDigest,
AuthorisationToken,
> {
entry: entry.into(),
authorisation_token,
}
.into()
}
/// Returns a reference to the entry.
pub fn entry(&self) -> &Entry {
(&self.0.entry).into()
}
/// Sets the entry.
pub fn set_entry(&mut self, entry: Entry) {
self.0.entry = entry.into()
}
/// Returns a reference to the authorisation token.
pub fn authorisation_token(&self) -> &AuthorisationToken {
&self.0.authorisation_token
}
/// Sets the authorisation token.
pub fn set_authorisation_token(&mut self, authorisation_token: AuthorisationToken) {
self.0.authorisation_token = authorisation_token
}
/// Takes ownership of `self` and returns the entry and authorisation token by value.
pub fn into_parts(self) -> (Entry, AuthorisationToken) {
(self.0.entry.into(), self.0.authorisation_token)
}
/// Checks whether `self.authorisation_token` [authorises](https://willowprotocol.org/specs/data-model/index.html#is_authorised_write) `self.entry`. If so, converts self into an [`AuthorisedEntry`], otherwise returns `Err(self)`.
///
/// ```
/// use rand::rngs::OsRng;
/// use willow25::prelude::*;
/// use willow25::authorisation::PossiblyAuthorisedEntry;
///
/// # #[cfg(feature = "dev")] {
/// let mut csprng = OsRng;
/// let (subspace_id, secret) = randomly_generate_subspace(&mut csprng);
/// let namespace_id = NamespaceId::from_bytes(&[17; 32]);
///
/// let my_entry = Entry::builder()
/// .namespace_id(namespace_id.clone())
/// .subspace_id(subspace_id.clone())
/// .path(path!("/ideas"))
/// .timestamp(12345)
/// .payload(b"chocolate with mustard")
/// .build().unwrap();
///
/// let mut cap = WriteCapability::new_communal(
/// namespace_id.clone(),
/// subspace_id.clone(),
/// );
///
/// let auth_token = AuthorisationToken::new_for_entry(&my_entry, &cap, &secret).unwrap();
///
/// let pae = PossiblyAuthorisedEntry::new(
/// my_entry.clone(),
/// auth_token.clone(),
/// );
/// assert!(pae.into_authorised_entry().is_ok());
///
/// let someone_elses_entry = Entry::prefilled_builder(&my_entry)
/// .subspace_id(SubspaceId::from_bytes(&[18; 32]))
/// .build().unwrap();
///
/// let pae2 = PossiblyAuthorisedEntry::new(
/// someone_elses_entry.clone(),
/// auth_token,
/// );
/// assert!(pae2.into_authorised_entry().is_err());
/// # }
/// ```
#[allow(clippy::result_large_err)]
pub fn into_authorised_entry(self) -> Result<AuthorisedEntry, Self> {
self.0
.into_authorised_entry()
.map(Into::into)
.map_err(Into::into)
}
/// Converts self into an [`AuthorisedEntry`], without checking if `self.authorisation_token` [authorise](https://willowprotocol.org/specs/data-model/index.html#is_authorised_write) `self.entry`.
///
/// ```
/// use rand::rngs::OsRng;
/// use willow25::prelude::*;
/// use willow25::authorisation::PossiblyAuthorisedEntry;
///
/// # #[cfg(feature = "dev")] {
/// let mut csprng = OsRng;
/// let (subspace_id, secret) = randomly_generate_subspace(&mut csprng);
/// let namespace_id = NamespaceId::from_bytes(&[17; 32]);
///
/// let entry = Entry::builder()
/// .namespace_id(namespace_id.clone())
/// .subspace_id(subspace_id.clone())
/// .path(path!("/ideas"))
/// .timestamp(12345)
/// .payload(b"chocolate with mustard")
/// .build().unwrap();
///
/// let mut cap = WriteCapability::new_communal(
/// namespace_id.clone(),
/// subspace_id.clone(),
/// );
///
/// let auth_token = AuthorisationToken::new_for_entry(&entry, &cap, &secret).unwrap();
///
/// let pae = PossiblyAuthorisedEntry::new(
/// entry.clone(),
/// auth_token.clone(),
/// );
///
/// let authed = unsafe { pae.into_authorised_entry_unchecked() };
/// assert_eq!(authed.entry(), &entry);
/// assert_eq!(authed.authorisation_token(), &auth_token);
/// # }
/// ```
///
/// #### Safety
///
/// Undefined behaviour may occur if `self.authorisation_token.does_authorise(&self.entry)` is `false`. If it returns `true`, this method is safe to call.
pub unsafe fn into_authorised_entry_unchecked(self) -> AuthorisedEntry {
// SAFETY: the requirements for `self.0.into_authorised_entry_unchecked` to be safe are exactly those
// required by this function itself.
unsafe { self.0.into_authorised_entry_unchecked() }.into()
}
}
impl wdm::Keylike<MCL, MCC, MPL, SubspaceId> for PossiblyAuthorisedEntry {
fn wdm_subspace_id(&self) -> &SubspaceId {
self.0.wdm_subspace_id()
}
fn wdm_path(&self) -> &wdm::Path<MCL, MCC, MPL> {
self.0.wdm_path()
}
}
impl wdm::Coordinatelike<MCL, MCC, MPL, SubspaceId> for PossiblyAuthorisedEntry {
fn wdm_timestamp(&self) -> Timestamp {
self.0.wdm_timestamp()
}
}
impl wdm::Namespaced<NamespaceId> for PossiblyAuthorisedEntry {
fn wdm_namespace_id(&self) -> &NamespaceId {
self.0.wdm_namespace_id()
}
}
impl wdm::Entrylike<MCL, MCC, MPL, NamespaceId, SubspaceId, PayloadDigest>
for PossiblyAuthorisedEntry
{
fn wdm_payload_length(&self) -> u64 {
self.0.wdm_payload_length()
}
fn wdm_payload_digest(&self) -> &PayloadDigest {
self.0.wdm_payload_digest()
}
}
wrapper! {
/// An entry, together with an authorisation token that [authorises](https://willowprotocol.org/specs/data-model/index.html#is_authorised_write) the entry.
///
/// There are two typical scenarios for creating these: authorising an [`Entry`] yourself (via [`Entry::into_authorised_entry`] or [`crate::entry::EntrylikeExt::authorise`]), or receiving and verifying an untrusted authorisation token ([`PossiblyAuthorisedEntry::into_authorised_entry`]).
///
/// ```
/// use rand::rngs::OsRng;
/// use willow25::prelude::*;
/// use willow25::authorisation::PossiblyAuthorisedEntry;
///
/// # #[cfg(feature = "dev")] {
/// let mut csprng = OsRng;
/// let (subspace_id, secret) = randomly_generate_subspace(&mut csprng);
/// let namespace_id = NamespaceId::from_bytes(&[17; 32]);
///
/// let entry = Entry::builder()
/// .namespace_id(namespace_id.clone())
/// .subspace_id(subspace_id.clone())
/// .path(path!("/ideas"))
/// .timestamp(12345)
/// .payload(b"chocolate with mustard")
/// .build().unwrap();
///
/// let mut cap = WriteCapability::new_communal(
/// namespace_id.clone(),
/// subspace_id.clone(),
/// );
///
/// let authed = entry.authorise(&cap, &secret);
/// let authed_alternative = entry.into_authorised_entry(&cap, &secret);
///
/// assert_eq!(authed, authed_alternative);
/// # }
/// ```
///
/// [Specification](https://willowprotocol.org/specs/data-model/index.html#AuthorisedEntry)
#[derive(PartialEq, Eq, Clone)]
#[cfg_attr(feature = "dev", derive(Arbitrary))]
AuthorisedEntry; wdm::AuthorisedEntry<MCL, MCC, MPL, NamespaceId, SubspaceId, PayloadDigest, AuthorisationToken>
}
impl fmt::Debug for AuthorisedEntry {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
self.0.fmt(f)
}
}
impl AuthorisedEntry {
/// Consumes self, returning the entry and the authorisation token.
pub fn into_parts(self) -> (Entry, AuthorisationToken) {
let (entry, at) = self.0.into_parts();
(entry.into(), at)
}
/// Returns a reference to the entry.
pub fn entry(&self) -> &Entry {
self.0.entry().into()
}
/// Returns a reference to the authorisation token.
pub fn authorisation_token(&self) -> &AuthorisationToken {
self.0.authorisation_token()
}
}
impl wdm::Keylike<MCL, MCC, MPL, SubspaceId> for AuthorisedEntry {
fn wdm_subspace_id(&self) -> &SubspaceId {
self.0.wdm_subspace_id()
}
fn wdm_path(&self) -> &wdm::Path<MCL, MCC, MPL> {
self.0.wdm_path()
}
}
impl wdm::Coordinatelike<MCL, MCC, MPL, SubspaceId> for AuthorisedEntry {
fn wdm_timestamp(&self) -> Timestamp {
self.0.wdm_timestamp()
}
}
impl wdm::Namespaced<NamespaceId> for AuthorisedEntry {
fn wdm_namespace_id(&self) -> &NamespaceId {
self.0.wdm_namespace_id()
}
}
impl wdm::Entrylike<MCL, MCC, MPL, NamespaceId, SubspaceId, PayloadDigest> for AuthorisedEntry {
fn wdm_payload_length(&self) -> u64 {
self.0.wdm_payload_length()
}
fn wdm_payload_digest(&self) -> &PayloadDigest {
self.0.wdm_payload_digest()
}
}