use bstr::{BString, ByteSlice};use quick_error::quick_error;use std::io; quick_error! { #[derive(Debug)] enum Error { NewlineInHeaderValue(value: BString) { display("Newlines are not allowed in header values: {:?}", value) } EmptyValue { display("Header values must not be empty") } }} impl Into<io::Error> for Error { fn into(self) -> io::Error { io::Error::new(io::ErrorKind::Other, self) }} const NL: &[u8; 1] = b"\n";const SPACE: &[u8; 1] = b" "; pub fn trusted_header_field(name: &[u8], value: &[u8], mut out: impl io::Write) -> io::Result<()> { out.write_all(name)?; out.write_all(&SPACE[..])?; out.write_all(value)?; out.write_all(&NL[..])} pub fn header_field(name: &[u8], value: &[u8], out: impl io::Write) -> io::Result<()> { if value.is_empty() { return Err(Error::EmptyValue.into()); } if value.find(NL).is_some() { return Err(Error::NewlineInHeaderValue(value.into()).into()); } trusted_header_field(name, value, out)}
use bstr::{BString, ByteSlice};
use quick_error::quick_error;
use std::io;
quick_error! {
#[derive(Debug)]
enum Error {
NewlineInHeaderValue(value: BString) {
display("Newlines are not allowed in header values: {:?}", value)
}
EmptyValue {
display("Header values must not be empty")
}
}
}
impl Into<io::Error> for Error {
fn into(self) -> io::Error {
io::Error::new(io::ErrorKind::Other, self)
}
}
const NL: &[u8; 1] = b"\n";
const SPACE: &[u8; 1] = b" ";
pub fn trusted_header_field(name: &[u8], value: &[u8], mut out: impl io::Write) -> io::Result<()> {
out.write_all(name)?;
out.write_all(&SPACE[..])?;
out.write_all(value)?;
out.write_all(&NL[..])
}
pub fn header_field(name: &[u8], value: &[u8], out: impl io::Write) -> io::Result<()> {
if value.is_empty() {
return Err(Error::EmptyValue.into());
}
if value.find(NL).is_some() {
return Err(Error::NewlineInHeaderValue(value.into()).into());
}
trusted_header_field(name, value, out)
}