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-rw-r--r--src/imap/mailbox_view.rs208
1 files changed, 108 insertions, 100 deletions
diff --git a/src/imap/mailbox_view.rs b/src/imap/mailbox_view.rs
index 2124855..72d39af 100644
--- a/src/imap/mailbox_view.rs
+++ b/src/imap/mailbox_view.rs
@@ -1,3 +1,4 @@
+use std::borrow::Cow;
use std::num::NonZeroU32;
use std::sync::Arc;
@@ -17,8 +18,8 @@ use imap_codec::types::flag::{Flag, StoreResponse, StoreType};
use imap_codec::types::response::{Code, Data, MessageAttribute, Status};
use imap_codec::types::sequence::{self, SequenceSet};
use eml_codec::{
- imf::{self as imf},
- part::{AnyPart},
+ imf,
+ part::{AnyPart, composite::Message},
mime::r#type::Deductible,
mime,
};
@@ -37,6 +38,26 @@ const DEFAULT_FLAGS: [Flag; 5] = [
const BODY_CHECK: &str = "body attribute asked but only header is fetched, logic error";
+enum FetchedMail<'a> {
+ Partial(imf::Imf<'a>),
+ Full(Message<'a>),
+}
+impl<'a> FetchedMail<'a> {
+ fn as_full(&self) -> Result<&Message<'a>> {
+ match self {
+ FetchedMail::Full(x) => Ok(&x),
+ _ => bail!("The full message must be fetched, not only its headers: it's a logic error"),
+ }
+ }
+
+ fn imf(&self) -> &imf::Imf<'a> {
+ match self {
+ FetchedMail::Full(x) => &x.imf,
+ FetchedMail::Partial(x) => &x,
+ }
+ }
+}
+
/// A MailboxView is responsible for giving the client the information
/// it needs about a mailbox, such as an initial summary of the mailbox's
/// content and continuous updates indicating when the content
@@ -288,14 +309,12 @@ impl MailboxView {
.get(&uuid)
.ok_or_else(|| anyhow!("Mail not in uidindex table: {}", uuid))?;
- let (parts, imf) = match &body {
+ let fetched = match &body {
Some(m) => {
- let eml = eml_codec::parse_message(m).or(Err(anyhow!("Invalid mail body")))?.1;
- (Some(eml.child), eml.imf)
+ FetchedMail::Full(eml_codec::parse_message(m).or(Err(anyhow!("Invalid mail body")))?.1)
}
None => {
- let imf = eml_codec::parse_imf(&meta.headers).or(Err(anyhow!("Invalid mail headers")))?.1;
- (None, imf)
+ FetchedMail::Partial(eml_codec::parse_imf(&meta.headers).or(Err(anyhow!("Invalid mail headers")))?.1)
}
};
@@ -316,14 +335,8 @@ impl MailboxView {
)))
}
FetchAttribute::Rfc822Text => {
- //@FIXME this is not efficient, this is a hack as we need to patch
- // eml_codec to correctly implement this behavior
- let txt = eml_codec::parse_imf(body.as_ref().expect(BODY_CHECK).as_slice())
- .map(|(x, _)| x)
- .unwrap_or(b"");
-
attributes.push(MessageAttribute::Rfc822Text(NString(
- txt.try_into().ok().map(IString::Literal),
+ fetched.as_full()?.raw_body.try_into().ok().map(IString::Literal),
)));
}
FetchAttribute::Rfc822 => attributes.push(MessageAttribute::Rfc822(NString(
@@ -335,23 +348,29 @@ impl MailboxView {
.map(IString::Literal),
))),
FetchAttribute::Envelope => {
- attributes.push(MessageAttribute::Envelope(message_envelope(&imf)))
+ attributes.push(MessageAttribute::Envelope(message_envelope(fetched.imf())))
}
FetchAttribute::Body => attributes.push(MessageAttribute::Body(
- build_imap_email_struct(parts.as_ref().expect(BODY_CHECK).as_ref())?,
+ build_imap_email_struct(fetched.as_full()?.child.as_ref())?,
)),
FetchAttribute::BodyStructure => attributes.push(MessageAttribute::Body(
- build_imap_email_struct(parts.as_ref().expect(BODY_CHECK).as_ref())?,
+ build_imap_email_struct(fetched.as_full()?.child.as_ref())?,
)),
+
+ // maps to BODY[<section>]<<partial>> and BODY.PEEK[<section>]<<partial>>
+ // peek does not implicitly set the \Seen flag
+ //
+ // eg. BODY[HEADER.FIELDS (DATE FROM)]
+ // eg. BODY[]<0.2048>
FetchAttribute::BodyExt {
section,
partial,
peek,
} => {
- // @FIXME deactivated while eml_codec is integrated
- todo!();
// @TODO Add missing section specifiers
- /*match get_message_section(&parts.expect("body attribute asked but only header is fetched, logic error"), section) {
+
+ // Extract message section
+ match get_message_section(fetched.as_full()?, section) {
Ok(text) => {
let seen_flag = Flag::Seen.to_string();
if !peek && !flags.iter().any(|x| *x == seen_flag) {
@@ -359,6 +378,7 @@ impl MailboxView {
self.mailbox.add_flags(uuid, &[seen_flag]).await?;
}
+ // Handle <<partial>> which cut the message byts
let (text, origin) = match partial {
Some((begin, len)) => {
if *begin as usize > text.len() {
@@ -393,7 +413,6 @@ impl MailboxView {
);
}
}
- */
}
FetchAttribute::InternalDate => {
let dt = Utc.fix().timestamp_opt(i64::try_from(meta.internaldate / 1000)?, 0).earliest().ok_or(anyhow!("Unable to parse internal date"))?;
@@ -817,54 +836,61 @@ fn basic_fields(m: &mime::NaiveMIME, sz: usize) -> Result<BasicFields> {
})
}
-/*
+/// Extract message section for section identifier passed by the FETCH BODY[<section>]<<partial>>
+/// request
+///
+/// Example of message sections:
+///
+/// ```
+/// HEADER ([RFC-2822] header of the message)
+/// TEXT ([RFC-2822] text body of the message) MULTIPART/MIXED
+/// 1 TEXT/PLAIN
+/// 2 APPLICATION/OCTET-STREAM
+/// 3 MESSAGE/RFC822
+/// 3.HEADER ([RFC-2822] header of the message)
+/// 3.TEXT ([RFC-2822] text body of the message) MULTIPART/MIXED
+/// 3.1 TEXT/PLAIN
+/// 3.2 APPLICATION/OCTET-STREAM
+/// 4 MULTIPART/MIXED
+/// 4.1 IMAGE/GIF
+/// 4.1.MIME ([MIME-IMB] header for the IMAGE/GIF)
+/// 4.2 MESSAGE/RFC822
+/// 4.2.HEADER ([RFC-2822] header of the message)
+/// 4.2.TEXT ([RFC-2822] text body of the message) MULTIPART/MIXED
+/// 4.2.1 TEXT/PLAIN
+/// 4.2.2 MULTIPART/ALTERNATIVE
+/// 4.2.2.1 TEXT/PLAIN
+/// 4.2.2.2 TEXT/RICHTEXT
+/// ```
fn get_message_section<'a>(
parsed: &'a Message<'a>,
section: &Option<FetchSection>,
) -> Result<Cow<'a, [u8]>> {
match section {
Some(FetchSection::Text(None)) => {
- let rp = parsed.root_part();
- Ok(parsed
- .raw_message
- .get(rp.offset_body..rp.offset_end)
- .ok_or(Error::msg(
- "Unable to extract email body, cursors out of bound. This is a bug.",
- ))?
- .into())
+ Ok(parsed.raw_body.into())
}
Some(FetchSection::Text(Some(part))) => {
- map_subpart_msg(parsed, part.0.as_slice(), |part_msg| {
- let rp = part_msg.root_part();
- Ok(part_msg
- .raw_message
- .get(rp.offset_body..rp.offset_end)
- .ok_or(Error::msg(
- "Unable to extract email body, cursors out of bound. This is a bug.",
- ))?
- .to_vec()
+ map_subpart(parsed.child.as_ref(), part.0.as_slice(), |part_msg| {
+ Ok(part_msg.as_message().ok_or(Error::msg("Not a message/rfc822 part while expected by request (xxx.TEXT)"))?
+ .raw_body
.into())
})
}
- Some(FetchSection::Header(part)) => map_subpart_msg(
- parsed,
+ Some(FetchSection::Header(part)) => map_subpart(
+ parsed.child.as_ref(),
part.as_ref().map(|p| p.0.as_slice()).unwrap_or(&[]),
|part_msg| {
- let rp = part_msg.root_part();
- Ok(part_msg
- .raw_message
- .get(..rp.offset_body)
- .ok_or(Error::msg(
- "Unable to extract email header, cursors out of bound. This is a bug.",
- ))?
- .to_vec()
+ Ok(part_msg.as_message().ok_or(Error::msg("Not a message/rfc822 part while expected by request (xxx.TEXT)"))?
+ .raw_headers
.into())
},
),
Some(
FetchSection::HeaderFields(part, fields) | FetchSection::HeaderFieldsNot(part, fields),
) => {
- let invert = matches!(section, Some(FetchSection::HeaderFieldsNot(_, _)));
+ todo!();
+ /*let invert = matches!(section, Some(FetchSection::HeaderFieldsNot(_, _)));
let fields = fields
.iter()
.map(|x| match x {
@@ -893,71 +919,53 @@ fn get_message_section<'a>(
ret.extend(b"\r\n");
Ok(ret.into())
},
- )
+ )*/
}
- Some(FetchSection::Part(part)) => map_subpart(parsed, part.0.as_slice(), |_msg, part| {
- let bytes = match &part.body {
- AnyPart::Txt(p) => p.as_bytes().to_vec(),
- AnyPart::Bin(p) => p.to_vec(),
- AnyPart::Msg(p) => p.raw_message.to_vec(),
- AnyPart::Multipart(_) => bail!("Multipart part has no body"),
+ Some(FetchSection::Part(part)) => map_subpart(parsed.child.as_ref(), part.0.as_slice(), |part| {
+ let bytes = match &part {
+ AnyPart::Txt(p) => p.body,
+ AnyPart::Bin(p) => p.body,
+ AnyPart::Msg(p) => p.raw_part,
+ AnyPart::Mult(_) => bail!("Multipart part has no body"),
};
- Ok(bytes.into())
+ Ok(bytes.to_vec().into())
}),
- Some(FetchSection::Mime(part)) => map_subpart(parsed, part.0.as_slice(), |msg, part| {
- let mut ret = vec![];
- for head in part.headers.iter() {
- ret.extend(head.name.as_str().as_bytes());
- ret.extend(b": ");
- ret.extend(&msg.raw_message[head.offset_start..head.offset_end]);
- }
- ret.extend(b"\r\n");
- Ok(ret.into())
+ Some(FetchSection::Mime(part)) => map_subpart(parsed.child.as_ref(), part.0.as_slice(), |part| {
+ let bytes = match &part {
+ AnyPart::Txt(p) => p.mime.fields.raw,
+ AnyPart::Bin(p) => p.mime.fields.raw,
+ AnyPart::Msg(p) => p.mime.fields.raw,
+ AnyPart::Mult(p) => p.mime.fields.raw,
+ };
+ Ok(bytes.to_vec().into())
}),
- None => Ok(parsed.raw_message.clone()),
+ None => Ok(parsed.raw_part.into()),
}
}
-fn map_subpart_msg<F, R>(msg: &Message<'_>, path: &[NonZeroU32], f: F) -> Result<R>
+/// Fetch a MIME SubPart
+///
+/// eg. FETCH BODY[4.2.2.1] -> [4, 2, 2, 1]
+fn map_subpart<'a, F, R>(part: &AnyPart<'a>, path: &[NonZeroU32], f: F) -> Result<R>
where
- F: FnOnce(&Message<'_>) -> Result<R>,
+ F: FnOnce(&AnyPart<'a>) -> Result<R>,
{
if path.is_empty() {
- f(msg)
+ f(part)
} else {
- let part = msg
- .parts
- .get(path[0].get() as usize - 1)
- .ok_or(anyhow!("No such subpart: {}", path[0]))?;
- if let PartType::Message(msg_attach) = &part.body {
- map_subpart_msg(msg_attach, &path[1..], f)
- } else {
- bail!("Subpart is not a message: {}", path[0]);
+ match part {
+ AnyPart::Mult(x) => map_subpart(
+ x.children
+ .get(path[0].get() as usize - 1)
+ .ok_or(anyhow!("Unable to resolve subpath {:?}, current multipart has only {} elements", path, x.children.len()))?,
+ &path[1..],
+ f),
+ AnyPart::Msg(x) => map_subpart(x.child.as_ref(), path, f),
+ _ => bail!("You tried to access a subpart on an atomic part (text or binary). Unresolved subpath {:?}", path),
}
}
}
-fn map_subpart<F, R>(msg: &Message<'_>, path: &[NonZeroU32], f: F) -> Result<R>
-where
- F: FnOnce(&Message<'_>, &MessagePart<'_>) -> Result<R>,
-{
- if path.is_empty() {
- bail!("Unexpected empty path");
- } else {
- let part = msg
- .parts
- .get(path[0].get() as usize - 1)
- .ok_or(anyhow!("No such subpart: {}", path[0]))?;
- if path.len() == 1 {
- f(msg, part)
- } else if let PartType::Message(msg_attach) = &part.body {
- map_subpart(msg_attach, &path[1..], f)
- } else {
- bail!("Subpart is not a message: {}", path[0]);
- }
- }
-}*/
-
#[cfg(test)]
mod tests {
use super::*;
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-19 21:35:08 +0000