mod aws;
mod specified;
pub use {
aws::AwsPrincipal,
specified::{SpecifiedPrincipal, SpecifiedPrincipalBuilder, SpecifiedPrincipalBuilderError},
};
use {
crate::display_json,
log::debug,
scratchstack_aws_principal::Principal as PrincipalActor,
serde::{
de::{self, value::MapAccessDeserializer, Deserializer, MapAccess, Unexpected, Visitor},
ser::Serializer,
Deserialize, Serialize,
},
std::fmt::{Formatter, Result as FmtResult},
};
#[derive(Clone, Debug, Eq, PartialEq)]
pub enum Principal {
Any,
Specified(SpecifiedPrincipal),
}
impl Principal {
#[inline]
pub fn is_any(&self) -> bool {
matches!(self, Principal::Any)
}
#[inline]
pub fn specified(&self) -> Option<&SpecifiedPrincipal> {
match self {
Principal::Any => None,
Principal::Specified(sp) => Some(sp),
}
}
pub fn matches(&self, actor: &PrincipalActor) -> bool {
match self {
Self::Any => true,
Self::Specified(specified_principal) => specified_principal.matches(actor),
}
}
}
impl From<SpecifiedPrincipal> for Principal {
fn from(sp: SpecifiedPrincipal) -> Self {
Self::Specified(sp)
}
}
struct PrincipalVisitor {}
impl<'de> Visitor<'de> for PrincipalVisitor {
type Value = Principal;
fn expecting(&self, f: &mut Formatter) -> FmtResult {
write!(f, "map of principal types to values or \"*\"")
}
fn visit_str<E>(self, v: &str) -> Result<Self::Value, E>
where
E: de::Error,
{
if v == "*" {
Ok(Principal::Any)
} else {
return Err(E::invalid_value(Unexpected::Str(v), &self));
}
}
fn visit_map<A>(self, access: A) -> Result<Self::Value, A::Error>
where
A: MapAccess<'de>,
{
let deserializer = MapAccessDeserializer::new(access);
match SpecifiedPrincipal::deserialize(deserializer) {
Ok(pm) => Ok(Principal::Specified(pm)),
Err(e) => {
debug!("Failed to deserialize statement: {:?}", e);
Err(e)
}
}
}
}
impl<'de> Deserialize<'de> for Principal {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: Deserializer<'de>,
{
deserializer.deserialize_any(PrincipalVisitor {})
}
}
impl Serialize for Principal {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: Serializer,
{
match self {
Self::Any => serializer.serialize_str("*"),
Self::Specified(specified) => specified.serialize(serializer),
}
}
}
display_json!(Principal);
#[cfg(test)]
mod tests {
use {
crate::{AwsPrincipal, Principal, SpecifiedPrincipal},
indoc::indoc,
pretty_assertions::assert_eq,
std::str::FromStr,
};
#[test_log::test]
fn test_any() {
assert!(Principal::Any.is_any());
assert!(Principal::Any.specified().is_none());
}
#[test_log::test]
fn test_formatting() {
let aws_principal = vec![
AwsPrincipal::from_str("123456789012").unwrap(),
AwsPrincipal::from_str("arn:aws:iam::123456789012:role/test").unwrap(),
];
let p1 = Principal::Any;
let p2 = Principal::Specified(SpecifiedPrincipal::builder().aws(aws_principal).build().unwrap());
assert_eq!(format!("{p1}"), r#""*""#);
assert_eq!(
format!("{p2}"),
indoc! { r#"
{
"AWS": [
"123456789012",
"arn:aws:iam::123456789012:role/test"
]
}"#}
)
}
}