proxmox-backup/src/client/http_client.rs

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Rust
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use failure::*;
use http::Uri;
use hyper::Body;
use hyper::client::Client;
use hyper::rt::{self, Future};
use http::Request;
use futures::stream::Stream;
use serde_json::{Value};
use url::percent_encoding::{percent_encode, DEFAULT_ENCODE_SET};
use crate::tools::tty;
/// HTTP(S) API client
pub struct HttpClient {
username: String,
server: String,
}
impl HttpClient {
pub fn new(server: &str, username: &str) -> Self {
Self {
server: String::from(server),
username: String::from(username),
}
}
fn get_password(&self) -> Result<String, Error> {
use std::env::VarError::*;
match std::env::var("PBS_PASSWORD") {
Ok(p) => return Ok(p),
Err(NotUnicode(_)) => bail!("PBS_PASSWORD contains bad characters"),
Err(NotPresent) => {
// Try another method
}
}
// If we're on a TTY, query the user for a password
if tty::stdin_isatty() {
return Ok(String::from_utf8(tty::read_password("Password: ")?)?);
}
bail!("no password input mechanism available");
}
fn run_request(
request: Request<Body>,
) -> Result<Value, Error> {
let mut builder = native_tls::TlsConnector::builder();
// FIXME: We need a CLI option for this!
builder.danger_accept_invalid_certs(true);
let tlsconnector = builder.build()?;
let mut httpc = hyper::client::HttpConnector::new(1);
httpc.enforce_http(false); // we want https...
let mut https = hyper_tls::HttpsConnector::from((httpc, tlsconnector));
https.https_only(true); // force it!
let client = Client::builder().build::<_, Body>(https);
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let (tx, rx) = std::sync::mpsc::channel();
let future = client
.request(request)
.map_err(Error::from)
.and_then(|resp| {
let status = resp.status();
resp.into_body().concat2().map_err(Error::from)
.and_then(move |data| {
let text = String::from_utf8(data.to_vec()).unwrap();
if status.is_success() {
if text.len() > 0 {
let value: Value = serde_json::from_str(&text)?;
Ok(value)
} else {
Ok(Value::Null)
}
} else {
bail!("HTTP Error {}: {}", status, text);
}
})
})
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.then(move |res| {
tx.send(res).unwrap();
Ok(())
});
// drop client, else client keeps connectioon open (keep-alive feature)
drop(client);
rt::run(future);
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rx.recv().unwrap()
}
pub fn get(&self, path: &str) -> Result<Value, Error> {
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let path = path.trim_matches('/');
let url: Uri = format!("https://{}:8007/{}", self.server, path).parse()?;
let (ticket, _token) = self.login()?;
let enc_ticket = percent_encode(ticket.as_bytes(), DEFAULT_ENCODE_SET).to_string();
let request = Request::builder()
.method("GET")
.uri(url)
.header("User-Agent", "proxmox-backup-client/1.0")
.header("Cookie", format!("PBSAuthCookie={}", enc_ticket))
.body(Body::empty())?;
Self::run_request(request)
}
pub fn post(&self, path: &str) -> Result<Value, Error> {
let path = path.trim_matches('/');
let url: Uri = format!("https://{}:8007/{}", self.server, path).parse()?;
let (ticket, token) = self.login()?;
let enc_ticket = percent_encode(ticket.as_bytes(), DEFAULT_ENCODE_SET).to_string();
let request = Request::builder()
.method("POST")
.uri(url)
.header("User-Agent", "proxmox-backup-client/1.0")
.header("Cookie", format!("PBSAuthCookie={}", enc_ticket))
.header("CSRFPreventionToken", token)
.body(Body::empty())?;
Self::run_request(request)
}
fn login(&self) -> Result<(String, String), Error> {
let url: Uri = format!("https://{}:8007/{}", self.server, "/api2/json/access/ticket").parse()?;
let password = self.get_password()?;
let query = url::form_urlencoded::Serializer::new(String::new())
.append_pair("username", &self.username)
.append_pair("password", &password)
.finish();
let request = Request::builder()
.method("POST")
.uri(url)
.header("User-Agent", "proxmox-backup-client/1.0")
.header("Content-Type", "application/x-www-form-urlencoded")
.body(Body::from(query))?;
let auth_res = Self::run_request(request)?;
let ticket = match auth_res["data"]["ticket"].as_str() {
Some(t) => t,
None => bail!("got unexpected respose for login request."),
};
let token = match auth_res["data"]["CSRFPreventionToken"].as_str() {
Some(t) => t,
None => bail!("got unexpected respose for login request."),
};
Ok((ticket.to_owned(), token.to_owned()))
}
pub fn upload(&self, content_type: &str, body: Body, path: &str) -> Result<Value, Error> {
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let path = path.trim_matches('/');
let url: Uri = format!("https://{}:8007/{}", self.server, path).parse()?;
let (ticket, token) = self.login()?;
let enc_ticket = percent_encode(ticket.as_bytes(), DEFAULT_ENCODE_SET).to_string();
let request = Request::builder()
.method("POST")
.uri(url)
.header("User-Agent", "proxmox-backup-client/1.0")
.header("Cookie", format!("PBSAuthCookie={}", enc_ticket))
.header("CSRFPreventionToken", token)
.header("Content-Type", content_type)
.body(body)?;
Self::run_request(request)
}
}