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use crate::{api, Error, Result};
use reqwest::{header, StatusCode};
use slog_scope::{debug, error};
use std::{
convert::{TryFrom, TryInto},
path::Path,
};
use tokio::{fs, io};
pub struct Client<'a> {
client: reqwest::Client,
server: &'a str,
}
pub async fn get<W>(url: &str, handle: &mut W) -> Result<()>
where
W: io::AsyncWrite + Unpin,
{
let url = reqwest::Url::parse(url)?;
save_body_to(reqwest::get(url).await?, handle).await
}
async fn save_body_to<W>(mut resp: reqwest::Response, handle: &mut W) -> Result<()>
where
W: io::AsyncWrite + Unpin,
{
use io::AsyncWriteExt;
use std::str::FromStr;
if !resp.status().is_success() {
return Err(Error::InvalidStatusResponse(resp.status()));
}
let mut written: f32 = 0.;
let mut threshold = 10;
let length = match resp.headers().get(header::CONTENT_LENGTH) {
Some(v) => usize::from_str(v.to_str()?)?,
None => 0,
};
while let Some(chunk) = resp.chunk().await? {
let read = chunk.len();
handle.write_all(&chunk).await?;
if length > 0 {
written += read as f32 / (length as f32 / 100.);
if written as usize >= threshold {
threshold += 20;
debug!("{}% of the file has been downloaded", std::cmp::min(written as usize, 100));
}
}
}
Ok(())
}
impl<'a> Client<'a> {
pub fn new(server: &'a str) -> Self {
let mut headers = header::HeaderMap::new();
headers.insert(header::USER_AGENT, header::HeaderValue::from_static("updatehub/2.0 Linux"));
headers.insert(header::CONTENT_TYPE, header::HeaderValue::from_static("application/json"));
headers.insert(
"api-content-type",
header::HeaderValue::from_static("application/vnd.updatehub-v1+json"),
);
let client = reqwest::Client::builder()
.connect_timeout(std::time::Duration::from_secs(10))
.default_headers(headers)
.build()
.unwrap();
Self { server, client }
}
pub async fn probe(
&self,
num_retries: usize,
firmware: api::FirmwareMetadata<'_>,
) -> Result<api::ProbeResponse> {
reqwest::Url::parse(self.server)?;
let response = self
.client
.post(&format!("{}/upgrades", &self.server))
.header("api-retries", num_retries.to_string())
.json(&firmware)
.send()
.await?;
match response.status() {
StatusCode::NOT_FOUND => Ok(api::ProbeResponse::NoUpdate),
StatusCode::OK => {
match response
.headers()
.get("add-extra-poll")
.and_then(|extra_poll| extra_poll.to_str().ok())
.and_then(|extra_poll| extra_poll.parse().ok())
{
Some(extra_poll) => Ok(api::ProbeResponse::ExtraPoll(extra_poll)),
None => {
let signature = response
.headers()
.get("UH-Signature")
.map(TryInto::try_into)
.transpose()?;
Ok(api::ProbeResponse::Update(
api::UpdatePackage::parse(&response.bytes().await?)?,
signature,
))
}
}
}
s => Err(Error::InvalidStatusResponse(s)),
}
}
pub async fn download_object(
&self,
product_uid: &str,
package_uid: &str,
download_dir: &Path,
object: &str,
) -> Result<()> {
validate_url(self.server)?;
let mut request = self.client.get(&format!(
"{}/products/{}/packages/{}/objects/{}",
&self.server, product_uid, package_uid, object
));
if !download_dir.exists() {
fs::create_dir_all(download_dir).await.map_err(|e| {
error!("fail to create {:?} directory, error: {}", download_dir, e);
e
})?;
}
let file = download_dir.join(object);
if file.exists() {
request = request
.header("RANGE", format!("bytes={}-", file.metadata()?.len().saturating_sub(1)));
}
let mut file = fs::OpenOptions::new().create(true).append(true).open(&file).await?;
save_body_to(request.send().await?, &mut file).await
}
pub async fn report(
&self,
state: &str,
firmware: api::FirmwareMetadata<'_>,
package_uid: &str,
previous_state: Option<&str>,
error_message: Option<String>,
current_log: Option<String>,
) -> Result<()> {
validate_url(self.server)?;
#[derive(serde::Serialize)]
#[serde(rename_all = "kebab-case")]
struct Payload<'a> {
#[serde(rename = "status")]
state: &'a str,
#[serde(flatten)]
firmware: api::FirmwareMetadata<'a>,
package_uid: &'a str,
#[serde(skip_serializing_if = "Option::is_none")]
previous_state: Option<&'a str>,
#[serde(skip_serializing_if = "Option::is_none")]
error_message: Option<String>,
#[serde(skip_serializing_if = "Option::is_none")]
current_log: Option<String>,
}
let payload =
Payload { state, firmware, package_uid, previous_state, error_message, current_log };
self.client.post(&format!("{}/report", &self.server)).json(&payload).send().await?;
Ok(())
}
}
impl TryFrom<&header::HeaderValue> for api::Signature {
type Error = Error;
fn try_from(value: &header::HeaderValue) -> Result<Self> {
let value = value.to_str()?;
if value.is_empty() {
return Self::from_base64_str("");
}
Self::from_base64_str(value)
}
}
fn validate_url(url: &str) -> Result<()> {
url::Url::parse(url)?;
Ok(())
}
