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try fix incoming text/html in multipart/mixed

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holger krekel
2019-12-07 08:16:19 +01:00
parent f32876708a
commit 9e2a96675d
3 changed files with 16 additions and 35 deletions
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43
src/mimeparser.rs
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@@ -109,6 +109,10 @@ impl<'a> MimeParser<'a> {
if let Some(raw) = raw {
mail_raw = raw;
let decrypted_mail = mailparse::parse_mail(&mail_raw)?;
if std::env::var(crate::DCC_MIME_DEBUG).is_ok() {
info!(context, "dc_receive_imf: incoming message mime-body:");
println!("{}", String::from_utf8_lossy(&mail_raw));
}
// Handle any gossip headers if the mail was encrypted. See section
// "3.6 Key Gossip" of https://autocrypt.org/autocrypt-spec-1.1.0.pdf
@@ -487,41 +491,10 @@ impl<'a> MimeParser<'a> {
}
}
_ => {
// Add all parts (in fact,
// AddSinglePartIfKnown() later check if the parts are really supported)
// HACK: the following lines are a hack for clients who use
// multipart/mixed instead of multipart/alternative for
// combined text/html messages (eg. Stock Android "Mail" does so).
// So, if we detect such a message below, we skip the Html
// part. However, not sure, if there are useful situations to use
// plain+html in multipart/mixed - if so, we should disable the hack.
let mut skip_part = -1;
let mut html_part = -1;
let mut plain_cnt = 0;
let mut html_cnt = 0;
for (i, cur_data) in mail.subparts.iter().enumerate() {
match get_mime_type(cur_data)?.0.type_() {
mime::TEXT => {
plain_cnt += 1;
}
mime::HTML => {
html_part = i as isize;
html_cnt += 1;
}
_ => {}
}
}
if plain_cnt == 1 && html_cnt == 1 {
warn!(
self.context,
"HACK: multipart/mixed message found with Plain and HTML, we\'ll skip the HTML part as this seems to be unwanted."
);
skip_part = html_part;
}
for (i, cur_data) in mail.subparts.iter().enumerate() {
if i as isize != skip_part && self.parse_mime_recursive(cur_data)? {
// Add all parts (in fact, AddSinglePartIfKnown() later check if
// the parts are really supported)
for cur_data in mail.subparts.iter() {
if self.parse_mime_recursive(cur_data)? {
any_part_added = true;
}
}