omaha_client_structured_config/
omaha-client-structured-config-lib_rust_config_lib_source.rs

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1use fidl::unpersist;
2use fidl_cf_sc_internal_omahaclientstructuredconfig::Config as FidlConfig;
3use fuchsia_inspect::Node;
4use fuchsia_runtime::{take_startup_handle, HandleInfo, HandleType};
5#[derive(Debug)]
6pub struct Config {
7    pub allow_reboot_when_idle: bool,
8    pub fuzz_percentage_range: u8,
9    pub periodic_interval_minutes: u16,
10    pub retry_delay_seconds: u16,
11    pub startup_delay_seconds: u16,
12}
13impl Config {
14    pub fn take_from_startup_handle() -> Self {
15        let config_vmo: zx::Vmo =
16            take_startup_handle(HandleInfo::new(HandleType::ComponentConfigVmo, 0))
17                .expect("Config VMO handle must be provided and cannot already have been taken.")
18                .into();
19        let config_size =
20            config_vmo.get_content_size().expect("must be able to read config vmo content size");
21        assert_ne!(config_size, 0, "config vmo must be non-empty");
22        let config_bytes =
23            config_vmo.read_to_vec(0, config_size).expect("must be able to read config vmo");
24        let checksum_length = u16::from_le_bytes([config_bytes[0], config_bytes[1]]) as usize;
25        let fidl_start = 2 + checksum_length;
26        let observed_checksum = &config_bytes[2..fidl_start];
27        let expected_checksum = vec![
28            0x70, 0x33, 0xd6, 0x73, 0x02, 0x0a, 0x40, 0x60, 0x94, 0xfa, 0x2b, 0x27, 0x15, 0x17,
29            0x86, 0x3c, 0x72, 0x5b, 0x0c, 0xd1, 0x8d, 0x78, 0xcc, 0xec, 0xce, 0x1b, 0xe8, 0x41,
30            0xed, 0x16, 0x58, 0xd4,
31        ];
32        assert_eq!(
33            observed_checksum, expected_checksum,
34            "checksum from config VMO does not match expected checksum"
35        );
36        let fidl_config: FidlConfig = unpersist(&config_bytes[fidl_start..])
37            .expect("must be able to parse bytes as config FIDL");
38        Self {
39            allow_reboot_when_idle: fidl_config.allow_reboot_when_idle,
40            fuzz_percentage_range: fidl_config.fuzz_percentage_range,
41            periodic_interval_minutes: fidl_config.periodic_interval_minutes,
42            retry_delay_seconds: fidl_config.retry_delay_seconds,
43            startup_delay_seconds: fidl_config.startup_delay_seconds,
44        }
45    }
46    pub fn record_inspect(&self, inspector_node: &Node) {
47        inspector_node.record_bool("allow_reboot_when_idle", self.allow_reboot_when_idle);
48        inspector_node.record_uint("fuzz_percentage_range", self.fuzz_percentage_range as u64);
49        inspector_node
50            .record_uint("periodic_interval_minutes", self.periodic_interval_minutes as u64);
51        inspector_node.record_uint("retry_delay_seconds", self.retry_delay_seconds as u64);
52        inspector_node.record_uint("startup_delay_seconds", self.startup_delay_seconds as u64);
53    }
54}
omaha_client_structured_config/omaha-client-structured-config-lib_rust_config_lib_source.rs

omaha_client_structured_config/
omaha-client-structured-config-lib_rust_config_lib_source.rs
