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
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
|
use std::net::SocketAddr;
use std::sync::Arc;
use futures::future::Future;
use hyper::header::HOST;
use hyper::server::conn::AddrStream;
use hyper::service::{make_service_fn, service_fn};
use hyper::{Body, Request, Response, Server};
use garage_model::garage::Garage;
use garage_util::error::Error;
pub async fn run_web_server(
garage: Arc<Garage>,
shutdown_signal: impl Future<Output = ()>,
) -> Result<(), Error> {
let addr = &garage.config.s3_web.bind_addr;
let service = make_service_fn(|conn: &AddrStream| {
let garage = garage.clone();
let client_addr = conn.remote_addr();
info!("{:?}", client_addr);
async move {
Ok::<_, Error>(service_fn(move |req: Request<Body>| {
let garage = garage.clone();
handler(garage, req, client_addr)
}))
}
});
let server = Server::bind(&addr).serve(service);
let graceful = server.with_graceful_shutdown(shutdown_signal);
info!("Web server listening on http://{}", addr);
graceful.await?;
Ok(())
}
async fn handler(
garage: Arc<Garage>,
req: Request<Body>,
addr: SocketAddr,
) -> Result<Response<Body>, Error> {
// Get http authority string (eg. [::1]:3902 or garage.tld:80)
let authority = req
.headers()
.get(HOST)
.ok_or(Error::BadRequest(format!("HOST header required")))?
.to_str()?;
// Get bucket
let host = authority_to_host(authority)?;
let root = &garage.config.s3_web.root_domain;
let bucket = host_to_bucket(&host, root);
// Get path
let path = req.uri().path().to_string();
let key = percent_encoding::percent_decode_str(&path).decode_utf8()?;
info!("Selected bucket: {}, selected key: {}", bucket, key);
Ok(Response::new(Body::from("hello world\n")))
}
/// Extract host from the authority section given by the HTTP host header
///
/// The HTTP host contains both a host and a port.
/// Extracting the port is more complex than just finding the colon (:) symbol due to IPv6
/// we do not use the collect pattern as there is no way in std rust to collect over a stack allocated value
/// check here: https://docs.rs/collect_slice/1.2.0/collect_slice/
fn authority_to_host(authority: &str) -> Result<&str, Error> {
let mut iter = authority.chars().enumerate();
let split = match iter.next() {
Some((_, '[')) => {
let mut niter = iter.skip_while(|(_, c)| c != &']');
niter.next().ok_or(Error::BadRequest(format!("Authority {} has an illegal format", authority)))?;
niter.next()
},
Some((_, _)) => iter.skip_while(|(_, c)| c != &':').next(),
None => return Err(Error::BadRequest(format!("Authority is empty"))),
};
match split {
Some((i, ':')) => Ok(&authority[..i]),
None => Ok(authority),
Some((_, _)) => Err(Error::BadRequest(format!("Authority {} has an illegal format", authority))),
}
}
fn host_to_bucket<'a>(host: &'a str, root: &str) -> &'a str {
if root.len() >= host.len() || !host.ends_with(root) {
return host;
}
let len_diff = host.len() - root.len();
let missing_starting_dot = root.chars().next() != Some('.');
let cursor = if missing_starting_dot {
len_diff - 1
} else {
len_diff
};
&host[..cursor]
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn authority_to_host_with_port() -> Result<(), Error> {
let domain = authority_to_host("[::1]:3902")?;
assert_eq!(domain, "[::1]");
let domain2 = authority_to_host("garage.tld:65200")?;
assert_eq!(domain2, "garage.tld");
let domain3 = authority_to_host("127.0.0.1:80")?;
assert_eq!(domain3, "127.0.0.1");
Ok(())
}
#[test]
fn authority_to_host_without_port() -> Result<(), Error> {
let domain = authority_to_host("[::1]")?;
assert_eq!(domain, "[::1]");
let domain2 = authority_to_host("garage.tld")?;
assert_eq!(domain2, "garage.tld");
let domain3 = authority_to_host("127.0.0.1")?;
assert_eq!(domain3, "127.0.0.1");
Ok(())
}
#[test]
fn host_to_bucket_test() {
assert_eq!(
host_to_bucket("john.doe.garage.tld", ".garage.tld"),
"john.doe"
);
assert_eq!(
host_to_bucket("john.doe.garage.tld", "garage.tld"),
"john.doe"
);
assert_eq!(host_to_bucket("john.doe.com", "garage.tld"), "john.doe.com");
assert_eq!(
host_to_bucket("john.doe.com", ".garage.tld"),
"john.doe.com"
);
assert_eq!(host_to_bucket("garage.tld", "garage.tld"), "garage.tld");
assert_eq!(host_to_bucket("garage.tld", ".garage.tld"), "garage.tld");
}
}
|
