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86fb310e71
...
5dc0dadaa9
2 changed files with 106 additions and 120 deletions
118
src/client.rs
118
src/client.rs
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@ -1,118 +0,0 @@
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use crate::{error::*, response::Response, status::*};
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use std::net::ToSocketAddrs;
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use std::sync::Arc;
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use tokio::{
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io::{AsyncBufReadExt, AsyncReadExt, AsyncWriteExt},
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net::TcpStream,
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};
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use tokio_rustls::{
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rustls::{self, pki_types},
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TlsConnector,
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};
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use url::Url;
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pub struct Client {
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connector: TlsConnector,
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}
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impl Default for Client {
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fn default() -> Self {
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let roots =
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rustls::RootCertStore::from_iter(webpki_roots::TLS_SERVER_ROOTS.iter().cloned());
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let config = rustls::ClientConfig::builder()
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.with_root_certificates(roots)
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.with_no_client_auth();
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Client::from(config)
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}
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}
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impl From<rustls::ClientConfig> for Client {
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#[inline]
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fn from(config: rustls::ClientConfig) -> Self {
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Client {
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connector: TlsConnector::from(Arc::new(config)),
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}
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}
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}
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impl Client {
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pub async fn request(self: &Self, url_str: &str) -> Result<Response, LibError> {
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let url = Url::parse(url_str).map_err(|e| InvalidUrl::ParseError(e))?;
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// for proxying http(s) through gemini server,
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// use Client::request_with_host
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if url.scheme() != "gemini" {
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// deny non-Gemini req
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return Err(InvalidUrl::SchemeNotGemini.into());
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}
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// userinfo (user:pswd@) is not allowed in Gemini
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if !url.username().is_empty() {
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return Err(InvalidUrl::UserinfoPresent.into());
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}
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let host = url.host_str().ok_or(InvalidUrl::ConvertError)?;
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let port = url.port().unwrap_or(1965);
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self.request_with_host(url_str, host, port).await
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}
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pub async fn request_with_host(
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self: &Self,
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url_str: &str,
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host: &str,
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port: u16,
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) -> Result<Response, LibError> {
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let addr = (host, port)
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.to_socket_addrs()?
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.next()
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.ok_or(InvalidUrl::ConvertError)?;
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let domain = pki_types::ServerName::try_from(host)
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.map_err(|_| InvalidUrl::ConvertError)?
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.to_owned();
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let stream = TcpStream::connect(&addr).await?;
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let mut stream = self.connector.connect(domain, stream).await?;
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// Write URL, then CRLF
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stream.write_all(url_str.as_bytes()).await?;
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stream.write_all(b"\r\n").await?;
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let mut buf: [u8; 3] = [0, 0, 0]; // 2 digits, space
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stream.read_exact(&mut buf).await?;
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let status = Status::parse_status(&buf)?;
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let mut message: Vec<u8> = Vec::new();
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let mut buf_reader = tokio::io::BufReader::new(&mut stream);
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let mut buf: [u8; 1] = [0]; // buffer for LF (\n)
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// reading message after status code
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// until CRLF (\r\n)
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loop {
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// until CR
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buf_reader.read_until(b'\r', &mut message).await?;
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// now read next char...
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buf_reader.read_exact(&mut buf).await?;
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if buf[0] == b'\n' {
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// ...and check if it's LF
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break;
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} else {
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// ...otherwise, CR is a part of message, not a CRLF terminator,
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// so append that one byte that's supposed to be LF (but not LF)
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// to the message buffer
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message.push(buf[0].into());
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}
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}
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// trim last CR
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if message.last().is_some_and(|c| c == &b'\r') {
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message.pop();
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}
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// Vec<u8> -> ASCII or UTF-8 String
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let message = String::from_utf8(message)?;
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Ok(Response::new(status, message, stream))
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}
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}
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108
src/lib.rs
108
src/lib.rs
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@ -1,9 +1,113 @@
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pub mod client;
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pub mod error;
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pub mod response;
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pub mod status;
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pub use client::Client;
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pub use error::*;
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pub use response::Response;
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pub use status::*;
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use std::net::ToSocketAddrs;
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use std::sync::Arc;
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use tokio::{
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io::{AsyncBufReadExt, AsyncReadExt, AsyncWriteExt},
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net::TcpStream,
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};
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use tokio_rustls::{
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rustls::{self, pki_types},
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TlsConnector,
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};
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use url::Url;
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pub struct Client {
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connector: TlsConnector,
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}
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impl Default for Client {
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fn default() -> Self {
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let roots =
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rustls::RootCertStore::from_iter(webpki_roots::TLS_SERVER_ROOTS.iter().cloned());
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let config = rustls::ClientConfig::builder()
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.with_root_certificates(roots)
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.with_no_client_auth();
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Client::from(config)
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}
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}
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impl From<rustls::ClientConfig> for Client {
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#[inline]
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fn from(config: rustls::ClientConfig) -> Self {
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Client {
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connector: TlsConnector::from(Arc::new(config)),
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}
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}
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}
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impl Client {
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pub async fn request(self: &Self, url_str: &str) -> Result<Response, LibError> {
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let url = Url::parse(url_str).map_err(|e| InvalidUrl::ParseError(e))?;
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// for proxying http(s) through gemini server,
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// use Client::request_with_host
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if url.scheme() != "gemini" {
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// deny non-Gemini req
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return Err(InvalidUrl::SchemeNotGemini.into());
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}
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// userinfo (user:pswd@) is not allowed in Gemini
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if !url.username().is_empty() {
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return Err(InvalidUrl::UserinfoPresent.into());
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}
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let host = url.host_str().ok_or(InvalidUrl::ConvertError)?;
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let addr = (host, url.port().unwrap_or(1965))
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.to_socket_addrs()?
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.next()
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.ok_or(InvalidUrl::ConvertError)?;
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let domain = pki_types::ServerName::try_from(host)
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.map_err(|_| InvalidUrl::ConvertError)?
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.to_owned();
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let stream = TcpStream::connect(&addr).await?;
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let mut stream = self.connector.connect(domain, stream).await?;
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// Write URL, then CRLF
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stream.write_all(url_str.as_bytes()).await?;
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stream.write_all(b"\r\n").await?;
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let mut buf: [u8; 3] = [0, 0, 0]; // 2 digits, space
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stream.read_exact(&mut buf).await?;
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let status = Status::parse_status(&buf)?;
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let mut message: Vec<u8> = Vec::new();
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let mut buf_reader = tokio::io::BufReader::new(&mut stream);
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let mut buf: [u8; 1] = [0]; // buffer for LF (\n)
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// reading message after status code
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// until CRLF (\r\n)
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loop {
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// until CR
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buf_reader.read_until(b'\r', &mut message).await?;
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// now read next char...
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buf_reader.read_exact(&mut buf).await?;
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if buf[0] == b'\n' {
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// ...and check if it's LF
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break;
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} else {
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// ...otherwise, CR is a part of message, not a CRLF terminator,
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// so append that one byte that's supposed to be LF (but not LF)
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// to the message buffer
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message.push(buf[0].into());
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}
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}
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// trim last CR
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if message.last().is_some_and(|c| c == &b'\r') {
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message.pop();
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}
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// Vec<u8> -> ASCII or UTF-8 String
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let message = String::from_utf8(message)?;
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Ok(Response::new(status, message, stream))
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}
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}
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