129 lines
3.6 KiB
Rust
129 lines
3.6 KiB
Rust
#![cfg(feature = "ssr")]
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use bytes::Bytes;
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use std::collections::HashMap;
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use thiserror::Error;
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use tokio::io::{AsyncReadExt, AsyncWriteExt};
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use tokio::net::UnixStream;
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#[derive(Error, Debug)]
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pub enum ScgiError {
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#[error("IO Error: {0}")]
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Io(#[from] std::io::Error),
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#[allow(dead_code)]
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#[error("Protocol Error: {0}")]
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Protocol(String),
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#[error("Timeout: SCGI request took too long")]
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Timeout,
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}
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pub struct ScgiRequest {
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headers: HashMap<String, String>,
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body: Vec<u8>,
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}
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impl ScgiRequest {
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pub fn new() -> Self {
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let mut headers = HashMap::new();
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headers.insert("SCGI".to_string(), "1".to_string());
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Self {
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headers,
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body: Vec::new(),
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}
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}
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pub fn _header(mut self, key: &str, value: &str) -> Self {
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self.headers.insert(key.to_string(), value.to_string());
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self
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}
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pub fn body(mut self, body: Vec<u8>) -> Self {
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self.body = body;
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self.headers
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.insert("CONTENT_LENGTH".to_string(), self.body.len().to_string());
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self
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}
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pub fn encode(&self) -> Vec<u8> {
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let mut headers_data = Vec::new();
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let content_len = self.body.len().to_string();
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headers_data.extend_from_slice(b"CONTENT_LENGTH");
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headers_data.push(0);
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headers_data.extend_from_slice(content_len.as_bytes());
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headers_data.push(0);
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headers_data.extend_from_slice(b"SCGI");
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headers_data.push(0);
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headers_data.extend_from_slice(b"1");
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headers_data.push(0);
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for (k, v) in &self.headers {
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if k == "CONTENT_LENGTH" || k == "SCGI" {
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continue;
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}
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headers_data.extend_from_slice(k.as_bytes());
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headers_data.push(0);
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headers_data.extend_from_slice(v.as_bytes());
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headers_data.push(0);
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}
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let headers_len = headers_data.len();
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let mut packet = Vec::new();
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let len_str = headers_len.to_string();
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packet.extend_from_slice(len_str.as_bytes());
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packet.push(b':');
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packet.extend(headers_data);
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packet.push(b',');
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packet.extend(&self.body);
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packet
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}
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}
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pub async fn send_request(socket_path: &str, request: ScgiRequest) -> Result<Bytes, ScgiError> {
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let perform_request = async {
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let mut stream = UnixStream::connect(socket_path).await?;
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let data = request.encode();
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stream.write_all(&data).await?;
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let mut response = Vec::new();
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stream.read_to_end(&mut response).await?;
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Ok::<Vec<u8>, std::io::Error>(response)
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};
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let response = tokio::time::timeout(std::time::Duration::from_secs(10), perform_request)
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.await
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.map_err(|_| ScgiError::Timeout)??;
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let mut response_vec = response;
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// Improved header stripping: find the first occurrence of "<?xml" OR double newline
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let patterns = [
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&b"\r\n\r\n"[..],
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&b"\n\n"[..],
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&b"<?xml"[..] // If headers are missing or weird, find start of XML
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];
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let mut found_pos = None;
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for (i, pattern) in patterns.iter().enumerate() {
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if let Some(pos) = response_vec
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.windows(pattern.len())
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.position(|window| window == *pattern)
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{
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// For XML pattern, we keep it. For newlines, we skip them.
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if i == 2 {
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found_pos = Some(pos);
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} else {
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found_pos = Some(pos + pattern.len());
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}
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break;
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}
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}
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if let Some(pos) = found_pos {
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Ok(Bytes::from(response_vec.split_off(pos)))
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} else {
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Ok(Bytes::from(response_vec))
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}
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} |