hwinfo_structured_config/
hwinfo_structured_config_rust_config_lib_source.rs

1use fidl::unpersist;
2use fidl_cf_sc_internal_hwinfostructuredconfig::Config as FidlConfig;
3use fuchsia_component_config::{Config as ComponentConfig, Error};
4use fuchsia_inspect::Node;
5use std::convert::TryInto;
6const EXPECTED_CHECKSUM: &[u8] = &[
7    0xa4, 0x87, 0x1c, 0x22, 0x13, 0xd9, 0x41, 0xa7, 0xe1, 0xad, 0xa4, 0xf0, 0xc3, 0xb2, 0xdf, 0xbb,
8    0x24, 0x49, 0x70, 0x36, 0x35, 0xf0, 0x46, 0xeb, 0x1a, 0x5b, 0x0f, 0xaf, 0x13, 0x4c, 0x83, 0xcc,
9];
10const EXPECTED_CHECKSUM_LENGTH: [u8; 2] = (EXPECTED_CHECKSUM.len() as u16).to_le_bytes();
11#[derive(Debug)]
12pub struct Config {
13    pub product_manufacturer: String,
14    pub product_model: String,
15    pub product_name: String,
16}
17impl Config {
18    #[doc = r" Take the config startup handle and parse its contents."]
19    #[doc = r""]
20    #[doc = r" # Panics"]
21    #[doc = r""]
22    #[doc = r" If the config startup handle was already taken or if it is not valid."]
23    pub fn take_from_startup_handle() -> Self {
24        <Self as ComponentConfig>::take_from_startup_handle()
25    }
26    #[doc = r" Parse `Self` from `vmo`."]
27    pub fn from_vmo(vmo: &zx::Vmo) -> Result<Self, Error> {
28        <Self as ComponentConfig>::from_vmo(vmo)
29    }
30    #[doc = r" Parse `Self` from `bytes`."]
31    pub fn from_bytes(bytes: &[u8]) -> Result<Self, Error> {
32        <Self as ComponentConfig>::from_bytes(bytes)
33    }
34    pub fn record_inspect(&self, inspector_node: &Node) {
35        <Self as ComponentConfig>::record_inspect(self, inspector_node)
36    }
37}
38impl ComponentConfig for Config {
39    #[doc = r" Parse `Self` from `bytes`."]
40    fn from_bytes(bytes: &[u8]) -> Result<Self, Error> {
41        let (checksum_len_bytes, bytes) = bytes.split_at_checked(2).ok_or(Error::TooFewBytes)?;
42        let checksum_len_bytes: [u8; 2] =
43            checksum_len_bytes.try_into().expect("previous call guaranteed 2 element slice");
44        let checksum_length = u16::from_le_bytes(checksum_len_bytes) as usize;
45        let (observed_checksum, bytes) =
46            bytes.split_at_checked(checksum_length).ok_or(Error::TooFewBytes)?;
47        if observed_checksum != EXPECTED_CHECKSUM {
48            return Err(Error::ChecksumMismatch {
49                expected_checksum: EXPECTED_CHECKSUM.to_vec(),
50                observed_checksum: observed_checksum.to_vec(),
51            });
52        }
53        let fidl_config: FidlConfig = unpersist(bytes).map_err(Error::Unpersist)?;
54        Ok(Self {
55            product_manufacturer: fidl_config.product_manufacturer,
56            product_model: fidl_config.product_model,
57            product_name: fidl_config.product_name,
58        })
59    }
60    fn to_bytes(&self) -> Result<Vec<u8>, Error> {
61        let fidl_config = FidlConfig {
62            product_manufacturer: self.product_manufacturer.clone(),
63            product_model: self.product_model.clone(),
64            product_name: self.product_name.clone(),
65        };
66        let mut fidl_bytes = fidl::persist(&fidl_config).map_err(Error::Persist)?;
67        let mut bytes = Vec::with_capacity(
68            EXPECTED_CHECKSUM_LENGTH.len() + EXPECTED_CHECKSUM.len() + fidl_bytes.len(),
69        );
70        bytes.extend_from_slice(&EXPECTED_CHECKSUM_LENGTH);
71        bytes.extend_from_slice(EXPECTED_CHECKSUM);
72        bytes.append(&mut fidl_bytes);
73        Ok(bytes)
74    }
75    fn record_inspect(&self, inspector_node: &Node) {
76        inspector_node.record_string("product_manufacturer", &self.product_manufacturer);
77        inspector_node.record_string("product_model", &self.product_model);
78        inspector_node.record_string("product_name", &self.product_name);
79    }
80}
hwinfo_structured_config/hwinfo_structured_config_rust_config_lib_source.rs

hwinfo_structured_config/
hwinfo_structured_config_rust_config_lib_source.rs
