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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,120 @@ | ||
| use core::str::FromStr; | ||
| use gene::FieldGetter; | ||
| use kunai_common::cgroup::Cgroup; | ||
| use kunai_macros::StrEnum; | ||
| use serde::{Deserialize, Serialize}; | ||
|
|
||
| #[derive(StrEnum, Debug, PartialEq, Clone, Copy)] | ||
| pub enum Container { | ||
| #[str("lxc")] | ||
| Lxc, | ||
| #[str("docker")] | ||
| Docker, | ||
| #[str("firejail")] | ||
| Firejail, | ||
| } | ||
|
|
||
| impl Serialize for Container { | ||
| fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error> | ||
| where | ||
| S: serde::Serializer, | ||
| { | ||
| serializer.serialize_str(self.as_str()) | ||
| } | ||
| } | ||
|
|
||
| impl<'de> Deserialize<'de> for Container { | ||
| fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> | ||
| where | ||
| D: serde::Deserializer<'de>, | ||
| { | ||
| // Deserialization logic goes here | ||
| struct ContainerVisitor; | ||
| const VARIANTS: &'static [&'static str] = &Container::variants_str(); | ||
|
|
||
| impl<'de> serde::de::Visitor<'de> for ContainerVisitor { | ||
| type Value = Container; | ||
|
|
||
| fn expecting(&self, formatter: &mut std::fmt::Formatter) -> std::fmt::Result { | ||
| formatter.write_str("a valid representation of Container enum") | ||
| } | ||
|
|
||
| fn visit_str<E>(self, value: &str) -> Result<Self::Value, E> | ||
| where | ||
| E: serde::de::Error, | ||
| { | ||
| Container::from_str(value) | ||
| .map_err(|_| serde::de::Error::unknown_variant(value, VARIANTS)) | ||
| } | ||
| } | ||
|
|
||
| deserializer.deserialize_str(ContainerVisitor) | ||
| } | ||
| } | ||
|
|
||
| impl FieldGetter for Container { | ||
| fn get_from_iter( | ||
| &self, | ||
| i: core::slice::Iter<'_, std::string::String>, | ||
| ) -> Option<gene::FieldValue> { | ||
| if i.len() > 0 { | ||
| return None; | ||
| } | ||
| return Some(self.as_str().into()); | ||
| } | ||
| } | ||
|
|
||
| impl Container { | ||
| #[inline] | ||
| pub fn from_cgroup(cgrp: &Cgroup) -> Option<Container> { | ||
| let s: Vec<String> = cgrp.to_vec(); | ||
|
|
||
| if let Some(last) = s.last() { | ||
| if last.starts_with("docker-") { | ||
| return Some(Container::Docker); | ||
| } | ||
| } | ||
|
|
||
| if let Some(first) = s.get(1) { | ||
| if first.starts_with("lxc.payload.") { | ||
| return Some(Container::Lxc); | ||
| } | ||
| } | ||
|
|
||
| None | ||
| } | ||
|
|
||
| #[inline] | ||
| pub fn from_ancestors(ancestors: Vec<String>) -> Option<Container> { | ||
| for a in ancestors { | ||
| match a.as_str() { | ||
| "/usr/bin/firejail" => return Some(Container::Firejail), | ||
| "/usr/bin/containerd-shim-runc-v2" => return Some(Container::Docker), | ||
| _ => {} | ||
| }; | ||
|
|
||
| if a.starts_with("/snap/lxd/") && a.ends_with("/bin/lxd/") { | ||
| return Some(Container::Lxc); | ||
| } | ||
| } | ||
| None | ||
| } | ||
| } | ||
|
|
||
| #[cfg(test)] | ||
| mod test { | ||
| use super::*; | ||
|
|
||
| #[test] | ||
| fn test_serde() { | ||
| let c = Container::Docker; | ||
|
|
||
| let ser = serde_json::to_string(&c).unwrap(); | ||
| assert_eq!(ser, r#""docker""#); | ||
| let de: Container = serde_json::from_str(&ser).unwrap(); | ||
| assert_eq!(de, Container::Docker); | ||
|
|
||
| // this is an unknown variant so we should get an error | ||
| assert!(serde_json::from_str::<'_, Container>(r#""lxk""#).is_err()); | ||
| } | ||
| } |
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