pkg_cache_config/
config_lib_rust_config_lib_source.rs

1use fidl::unpersist;
2use fidl_cf_sc_internal_pkgcacheconfig::Config as FidlConfig;
3use fuchsia_component_config::{Config as ComponentConfig, Error};
4use fuchsia_inspect::Node;
5use std::convert::TryInto;
6const EXPECTED_CHECKSUM: &[u8] = &[
7    0x1b, 0x95, 0x9f, 0xf1, 0x75, 0xdf, 0x17, 0x8b, 0xed, 0xfe, 0x4d, 0xbb, 0x4e, 0xea, 0x8d, 0xed,
8    0x14, 0x46, 0x32, 0xf5, 0xa1, 0xa7, 0x00, 0xef, 0x37, 0x9d, 0xad, 0x93, 0x67, 0x16, 0x33, 0xac,
9];
10const EXPECTED_CHECKSUM_LENGTH: [u8; 2] = (EXPECTED_CHECKSUM.len() as u16).to_le_bytes();
11#[derive(Debug)]
12pub struct Config {
13    pub all_packages_executable: bool,
14    pub enable_upgradable_packages: bool,
15    pub system_image_hash: String,
16    pub use_system_image: bool,
17}
18impl Config {
19    #[doc = r" Take the config startup handle and parse its contents."]
20    #[doc = r""]
21    #[doc = r" # Panics"]
22    #[doc = r""]
23    #[doc = r" If the config startup handle was already taken or if it is not valid."]
24    pub fn take_from_startup_handle() -> Self {
25        <Self as ComponentConfig>::take_from_startup_handle()
26    }
27    #[doc = r" Parse `Self` from `vmo`."]
28    pub fn from_vmo(vmo: &zx::Vmo) -> Result<Self, Error> {
29        <Self as ComponentConfig>::from_vmo(vmo)
30    }
31    #[doc = r" Parse `Self` from `bytes`."]
32    pub fn from_bytes(bytes: &[u8]) -> Result<Self, Error> {
33        <Self as ComponentConfig>::from_bytes(bytes)
34    }
35    pub fn record_inspect(&self, inspector_node: &Node) {
36        <Self as ComponentConfig>::record_inspect(self, inspector_node)
37    }
38}
39impl ComponentConfig for Config {
40    #[doc = r" Parse `Self` from `bytes`."]
41    fn from_bytes(bytes: &[u8]) -> Result<Self, Error> {
42        let (checksum_len_bytes, bytes) = bytes.split_at_checked(2).ok_or(Error::TooFewBytes)?;
43        let checksum_len_bytes: [u8; 2] =
44            checksum_len_bytes.try_into().expect("previous call guaranteed 2 element slice");
45        let checksum_length = u16::from_le_bytes(checksum_len_bytes) as usize;
46        let (observed_checksum, bytes) =
47            bytes.split_at_checked(checksum_length).ok_or(Error::TooFewBytes)?;
48        if observed_checksum != EXPECTED_CHECKSUM {
49            return Err(Error::ChecksumMismatch {
50                expected_checksum: EXPECTED_CHECKSUM.to_vec(),
51                observed_checksum: observed_checksum.to_vec(),
52            });
53        }
54        let fidl_config: FidlConfig = unpersist(bytes).map_err(Error::Unpersist)?;
55        Ok(Self {
56            all_packages_executable: fidl_config.all_packages_executable,
57            enable_upgradable_packages: fidl_config.enable_upgradable_packages,
58            system_image_hash: fidl_config.system_image_hash,
59            use_system_image: fidl_config.use_system_image,
60        })
61    }
62    fn to_bytes(&self) -> Result<Vec<u8>, Error> {
63        let fidl_config = FidlConfig {
64            all_packages_executable: self.all_packages_executable.clone(),
65            enable_upgradable_packages: self.enable_upgradable_packages.clone(),
66            system_image_hash: self.system_image_hash.clone(),
67            use_system_image: self.use_system_image.clone(),
68        };
69        let mut fidl_bytes = fidl::persist(&fidl_config).map_err(Error::Persist)?;
70        let mut bytes = Vec::with_capacity(
71            EXPECTED_CHECKSUM_LENGTH.len() + EXPECTED_CHECKSUM.len() + fidl_bytes.len(),
72        );
73        bytes.extend_from_slice(&EXPECTED_CHECKSUM_LENGTH);
74        bytes.extend_from_slice(EXPECTED_CHECKSUM);
75        bytes.append(&mut fidl_bytes);
76        Ok(bytes)
77    }
78    fn record_inspect(&self, inspector_node: &Node) {
79        inspector_node.record_bool("all_packages_executable", self.all_packages_executable);
80        inspector_node.record_bool("enable_upgradable_packages", self.enable_upgradable_packages);
81        inspector_node.record_string("system_image_hash", &self.system_image_hash);
82        inspector_node.record_bool("use_system_image", self.use_system_image);
83    }
84}
pkg_cache_config/config_lib_rust_config_lib_source.rs

pkg_cache_config/
config_lib_rust_config_lib_source.rs
