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use std::fs::read;
use std::io::ErrorKind as IOErrKind;
use maildir::Maildir;
use crate::error::{Error, Result};
use crate::rfc822::{parse_mail_content, MIMEHeader};
pub fn raw(md: &Maildir, mid: &str, mime_path: &str) -> Result<(MIMEHeader, Vec<u8>)> {
let mut mail = md.find(mid).ok_or_else(|| {
std::io::Error::new(IOErrKind::NotFound, format!("mail {} not found", mid))
})?;
if mime_path.is_empty() {
let mh = MIMEHeader {
maintype: "message".to_owned(),
subtype: "rfc822".to_owned(),
filename: mail.id().to_owned(),
content_disposition: "".to_owned(),
};
return Ok((mh, read(mail.path())?));
}
let path = mime_path
.split('.')
.map(|x| {
x.parse()
.map_err(|pe: std::num::ParseIntError| Error::PathError {
msg: pe.to_string(),
path: mime_path.to_owned(),
})
})
.collect::<Result<Vec<_>>>()?;
let mut m = mail.parsed()?;
if path[0] != 0 {
return Err(Error::PathError {
msg: "Message must be accessed by a 0".to_owned(),
path: mime_path.to_owned(),
});
}
for i in &path[1..] {
match &m.ctype.mimetype {
x if x.starts_with("message/") => {
if *i != 0 {
return Err(Error::PathError {
msg: "Message must be accessed by a 0".to_owned(),
path: mime_path.to_owned(),
});
}
let s: &'static _ = m.get_body_raw()?.leak();
m = mailparse::parse_mail(s)?;
}
x if x.starts_with("multipart/") => {
if *i >= m.subparts.len() {
return Err(Error::PathError {
msg: "Out of bounds access".to_owned(),
path: mime_path.to_owned(),
});
}
m = m.subparts.swap_remove(*i);
}
_ => {
return Err(Error::PathError {
msg: "Unable to descent into leaf component".to_owned(),
path: mime_path.to_owned(),
})
}
}
}
if m.ctype.mimetype.starts_with("multipart/") {
return Err(Error::PathError {
msg: "Can not show multipart component".to_owned(),
path: mime_path.to_owned(),
});
}
let mime_part = parse_mail_content(&m)?;
let content = if m.ctype.mimetype.starts_with("text/") {
m.get_body()?.into_bytes()
} else {
m.get_body_raw()?
};
Ok((mime_part, content))
}
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