1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
#[macro_use]
mod common;
mod crypto_provider;
mod key_manager;
mod kms_asymmetric_key;
mod kms_sealing_key;
use crate::key_manager::KeyManager;
use anyhow::{format_err, Error};
use fidl_fuchsia_kms::{KeyManagerRequestStream, KeyProvider};
use fuchsia_async as fasync;
use fuchsia_component::server::ServiceFs;
use futures::prelude::*;
use serde::{Deserialize, Serialize};
use serde_json;
use std::fs;
use std::sync::Arc;
use tracing::{error, info};
const CONFIG_PATH: &str = "/config/data/crypto_provider_config.json";
#[fuchsia::main(logging_tags = ["kms"])]
fn main() -> Result<(), Error> {
let mut executor = fasync::LocalExecutor::new();
let key_manager_ref = Arc::new({
let mut key_manager = KeyManager::new();
match get_provider_from_config() {
Ok(provider) => {
info!("Config found, using provider: {:?} for KMS", &provider);
key_manager.set_provider(provider)?;
}
Err(err) => {
info!("Failed to read config, err: {:?} use default crypto provider for KMS", err);
}
}
key_manager
});
let mut fs = ServiceFs::new();
fs.dir("svc").add_fidl_service(|stream| spawn(stream, Arc::clone(&key_manager_ref)));
fs.take_and_serve_directory_handle()?;
let () = executor.run_singlethreaded(fs.collect());
Ok(())
}
#[derive(Debug, Deserialize, PartialEq, Serialize)]
pub struct Config<'a> {
pub crypto_provider: &'a str,
}
fn get_provider_from_config() -> Result<KeyProvider, Error> {
let json = fs::read_to_string(CONFIG_PATH)?;
let config: Config<'_> = serde_json::from_str(&json)?;
match config.crypto_provider {
"OpteeProvider" => Ok(KeyProvider::OpteeProvider),
"SoftwareProvider" => Ok(KeyProvider::SoftwareProvider),
"SoftwareAsymmetricOnlyProvider" => Ok(KeyProvider::SoftwareAsymmetricOnlyProvider),
_ => Err(format_err!("Unsupported provider {:?}", config.crypto_provider)),
}
}
fn spawn(mut stream: KeyManagerRequestStream, key_manager: Arc<KeyManager>) {
fasync::Task::spawn(
async move {
while let Some(r) = stream.try_next().await? {
key_manager.handle_request(r)?;
}
Ok(())
}
.unwrap_or_else(|e: fidl::Error| error!("Error handling KMS request: {:?}", e)),
)
.detach();
}