system_updater_config/
config_lib_rust_config_lib_source.rs

1use fidl::unpersist;
2use fidl_cf_sc_internal_systemupdaterconfig::Config as FidlConfig;
3use fuchsia_component_config::{Config as ComponentConfig, Error};
4use fuchsia_inspect::{ArrayProperty, Node};
5use std::convert::TryInto;
6const EXPECTED_CHECKSUM: &[u8] = &[
7    0xec, 0x25, 0x51, 0x24, 0x55, 0x45, 0x27, 0x97, 0x7a, 0x1c, 0x1e, 0x84, 0x54, 0xf8, 0x07, 0xe2,
8    0x6d, 0x87, 0x88, 0x97, 0x14, 0x7f, 0x5f, 0xe4, 0xe5, 0x20, 0x67, 0x40, 0x02, 0x35, 0x4b, 0xb2,
9];
10const EXPECTED_CHECKSUM_LENGTH: [u8; 2] = (EXPECTED_CHECKSUM.len() as u16).to_le_bytes();
11#[derive(Debug)]
12pub struct Config {
13    pub concurrent_blob_fetches: u16,
14    pub concurrent_package_resolves: u16,
15    pub manifest_public_keys: Vec<String>,
16    pub verify_existing_blobs: 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            concurrent_blob_fetches: fidl_config.concurrent_blob_fetches,
57            concurrent_package_resolves: fidl_config.concurrent_package_resolves,
58            manifest_public_keys: fidl_config.manifest_public_keys,
59            verify_existing_blobs: fidl_config.verify_existing_blobs,
60        })
61    }
62    fn to_bytes(&self) -> Result<Vec<u8>, Error> {
63        let fidl_config = FidlConfig {
64            concurrent_blob_fetches: self.concurrent_blob_fetches.clone(),
65            concurrent_package_resolves: self.concurrent_package_resolves.clone(),
66            manifest_public_keys: self.manifest_public_keys.clone(),
67            verify_existing_blobs: self.verify_existing_blobs.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_uint("concurrent_blob_fetches", self.concurrent_blob_fetches as u64);
80        inspector_node
81            .record_uint("concurrent_package_resolves", self.concurrent_package_resolves as u64);
82        let arr = inspector_node
83            .create_string_array("manifest_public_keys", self.manifest_public_keys.len());
84        for i in 0..self.manifest_public_keys.len() {
85            arr.set(i, &self.manifest_public_keys[i]);
86        }
87        inspector_node.record(arr);
88        inspector_node.record_bool("verify_existing_blobs", self.verify_existing_blobs);
89    }
90}
system_updater_config/config_lib_rust_config_lib_source.rs

system_updater_config/
config_lib_rust_config_lib_source.rs
