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Jooyung Han7a343f92021-09-08 22:53:11 +09001// Copyright 2021, The Android Open Source Project
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7// http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15//! Routines for handling payload
16
17use crate::instance::ApexData;
18use crate::ioutil::wait_for_file;
19use anyhow::Result;
Andrew Scull11638792022-04-25 18:13:21 +000020use apexutil::verify;
Jooyung Han7a343f92021-09-08 22:53:11 +090021use log::info;
Jooyung Han4a9b3bf2021-09-10 17:19:00 +090022use microdroid_metadata::{read_metadata, ApexPayload, Metadata};
Jooyung Han7a343f92021-09-08 22:53:11 +090023use std::time::Duration;
Jooyung Han7a343f92021-09-08 22:53:11 +090024
Jooyung Han7a343f92021-09-08 22:53:11 +090025const PAYLOAD_METADATA_PATH: &str = "/dev/block/by-name/payload-metadata";
26const WAIT_TIMEOUT: Duration = Duration::from_secs(10);
27
28/// Loads payload metadata from /dev/block/by-name/payload-metadata
29pub fn load_metadata() -> Result<Metadata> {
30 info!("loading payload metadata...");
31 let file = wait_for_file(PAYLOAD_METADATA_PATH, WAIT_TIMEOUT)?;
32 read_metadata(file)
33}
34
Jooyung Hanc8deb472021-09-13 13:48:25 +090035/// Loads (name, public_key, root_digest) from payload APEXes
Jooyung Han7a343f92021-09-08 22:53:11 +090036pub fn get_apex_data_from_payload(metadata: &Metadata) -> Result<Vec<ApexData>> {
Jooyung Han4a9b3bf2021-09-10 17:19:00 +090037 metadata
Jooyung Han7a343f92021-09-08 22:53:11 +090038 .apexes
39 .iter()
40 .map(|apex| {
41 let name = apex.name.clone();
Jooyung Hanc8deb472021-09-13 13:48:25 +090042 let apex_path = format!("/dev/block/by-name/{}", apex.partition_name);
43 let result = verify(&apex_path)?;
Andrew Walbran40be9d52022-01-19 14:32:53 +000044 Ok(ApexData {
45 name,
46 public_key: result.public_key,
47 root_digest: result.root_digest,
48 last_update_seconds: apex.last_update_seconds,
Jiyong Parkd6502352022-01-27 01:07:30 +090049 is_factory: apex.is_factory,
Andrew Walbran40be9d52022-01-19 14:32:53 +000050 })
Jooyung Han7a343f92021-09-08 22:53:11 +090051 })
Jooyung Han4a9b3bf2021-09-10 17:19:00 +090052 .collect()
Jooyung Han7a343f92021-09-08 22:53:11 +090053}
54
Jooyung Han4a9b3bf2021-09-10 17:19:00 +090055/// Convert vector of ApexData into Metadata
56pub fn to_metadata(apex_data: &[ApexData]) -> Metadata {
57 Metadata {
58 apexes: apex_data
59 .iter()
60 .map(|data| ApexPayload {
61 name: data.name.clone(),
Jooyung Hanc8deb472021-09-13 13:48:25 +090062 public_key: data.public_key.clone(),
63 root_digest: data.root_digest.clone(),
Andrew Walbran40be9d52022-01-19 14:32:53 +000064 last_update_seconds: data.last_update_seconds,
Jiyong Parkd6502352022-01-27 01:07:30 +090065 is_factory: data.is_factory,
Jooyung Han4a9b3bf2021-09-10 17:19:00 +090066 ..Default::default()
67 })
68 .collect(),
69 ..Default::default()
70 }
71}