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
|
use {
crate::request::Response,
tokio::io::{AsyncReadExt, AsyncWriteExt},
};
/// Make a request to a Gemini server
///
/// The `url` **should** be prefixed with a scheme (e.g. "gemini://").
///
/// # Example
///
/// ```rust
/// #[tokio::main]
/// async fn main() {
/// match germ::request::request(&url::Url::parse("gemini://fuwn.me").unwrap())
/// .await
/// {
/// Ok(response) => println!("{:?}", response),
/// Err(_) => {}
/// }
/// }
/// ```
///
/// # Errors
///
/// - May error if the URL is invalid
/// - May error if the server is unreachable
/// - May error if the TLS write fails
/// - May error if the TLS read fails
pub async fn request(url: &url::Url) -> anyhow::Result<Response> {
let mut tls = tokio_rustls::TlsConnector::from(std::sync::Arc::new(
rustls::ClientConfig::builder()
.with_safe_defaults()
.with_custom_certificate_verifier(std::sync::Arc::new(
crate::request::GermVerifier::new(),
))
.with_no_client_auth(),
))
.connect(
rustls::ServerName::try_from(
url
.domain()
.ok_or_else(|| anyhow::anyhow!("Invalid URL: missing domain"))?,
)?,
tokio::net::TcpStream::connect(format!(
"{}:{}",
url
.domain()
.ok_or_else(|| anyhow::anyhow!("Invalid URL: missing domain"))?,
url.port().unwrap_or(1965)
))
.await?,
)
.await?;
let cipher_suite = tls.get_mut().1.negotiated_cipher_suite();
tls.write_all(format!("{url}\r\n").as_bytes()).await?;
Ok(Response::new(
&{
let mut plain_text = Vec::new();
tls.read_to_end(&mut plain_text).await?;
plain_text
},
cipher_suite,
))
}
|