553 lines
21 KiB
Rust
553 lines
21 KiB
Rust
use nom::IResult;
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use crate::header::{header, self};
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use crate::imf;
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use crate::mime;
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use crate::part::{self, AnyPart, field::MixedField};
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use crate::text::boundary::{boundary, Delimiter};
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use crate::pointers;
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//--- Multipart
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#[derive(Debug, PartialEq)]
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pub struct Multipart<'a> {
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pub mime: mime::MIME<'a, mime::r#type::Multipart>,
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pub children: Vec<AnyPart<'a>>,
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pub raw_part_inner: &'a [u8],
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pub raw_part_outer: &'a [u8],
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}
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impl<'a> Multipart<'a> {
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pub fn preamble(&self) -> &'a [u8] {
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pointers::parsed(self.raw_part_outer, self.raw_part_inner)
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}
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pub fn epilogue(&self) -> &'a [u8] {
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pointers::rest(self.raw_part_outer, self.raw_part_inner)
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}
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pub fn preamble_and_body(&self) -> &'a [u8] {
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pointers::with_preamble(self.raw_part_outer, self.raw_part_inner)
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}
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pub fn body_and_epilogue(&self) -> &'a [u8] {
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pointers::with_epilogue(self.raw_part_outer, self.raw_part_inner)
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}
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}
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pub fn multipart<'a>(
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m: mime::MIME<'a, mime::r#type::Multipart>,
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) -> impl Fn(&'a [u8]) -> IResult<&'a [u8], Multipart<'a>> {
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let m = m.clone();
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move |input| {
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// init
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let outer_orig = input;
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let bound = m.interpreted_type.boundary.as_bytes();
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let mut mparts: Vec<AnyPart> = vec![];
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// skip preamble
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let (mut input_loop, _) = part::part_raw(bound)(input)?;
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let inner_orig = input_loop;
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loop {
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let input = match boundary(bound)(input_loop) {
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Err(_) => {
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return Ok((
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input_loop,
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Multipart {
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mime: m.clone(),
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children: mparts,
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raw_part_inner: pointers::parsed(inner_orig, input_loop),
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raw_part_outer: pointers::parsed(outer_orig, input_loop),
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},
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))
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}
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Ok((inp, Delimiter::Last)) => {
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return Ok((
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inp,
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Multipart {
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mime: m.clone(),
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children: mparts,
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raw_part_inner: pointers::parsed(inner_orig, inp),
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raw_part_outer: pointers::parsed(outer_orig, &outer_orig[outer_orig.len()..]),
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},
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))
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}
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Ok((inp, Delimiter::Next)) => inp,
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};
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// parse mime headers, otherwise pick default mime
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let (input, naive_mime) = match header(mime::field::content)(input) {
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Ok((input_eom, (known, unknown, bad))) => {
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let raw_hdrs = pointers::parsed(input, input_eom);
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let mime = known
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.into_iter()
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.collect::<mime::NaiveMIME>()
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.with_opt(unknown)
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.with_bad(bad)
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.with_raw(raw_hdrs);
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(input_eom, mime)
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},
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Err(_) => (input, mime::NaiveMIME::default()),
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};
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// interpret mime according to context
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let mime = match m.interpreted_type.subtype {
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mime::r#type::MultipartSubtype::Digest => naive_mime.to_interpreted::<mime::WithDigestDefault>().into(),
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_ => naive_mime.to_interpreted::<mime::WithGenericDefault>().into(),
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};
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// parse raw part
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let (input, rpart) = part::part_raw(bound)(input)?;
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// parse mime body
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// -- we do not keep the input as we are using the
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// part_raw function as our cursor here.
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let (_, part) = part::anypart(mime)(rpart)?;
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mparts.push(part);
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input_loop = input;
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}
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}
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}
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//--- Message
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#[derive(Debug, PartialEq)]
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pub struct Message<'a> {
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pub mime: mime::MIME<'a, mime::r#type::DeductibleMessage>,
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pub imf: imf::Imf<'a>,
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pub child: Box<AnyPart<'a>>,
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pub raw_part: &'a [u8],
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pub raw_headers: &'a [u8],
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pub raw_body: &'a [u8],
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}
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pub fn message<'a>(
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m: mime::MIME<'a, mime::r#type::DeductibleMessage>,
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) -> impl Fn(&'a [u8]) -> IResult<&'a [u8], Message<'a>> {
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move |input: &[u8]| {
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let orig = input;
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// parse header fields
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let (input, (known, unknown, bad)): (_, (Vec::<MixedField>, Vec<header::Kv>, Vec<&[u8]>)) =
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header(part::field::mixed_field)(input)?;
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// extract raw parts 1/2
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let raw_headers = pointers::parsed(orig, input);
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let body_orig = input;
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// aggregate header fields
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let (naive_mime, imf) = part::field::sections(known);
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// attach bad headers to imf
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let imf = imf.with_opt(unknown).with_bad(bad);
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// interpret headers to choose a mime type
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let in_mime = naive_mime.with_raw(raw_headers).to_interpreted::<mime::WithGenericDefault>().into();
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// parse this mimetype
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let (input, part) = part::anypart(in_mime)(input)?;
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// extract raw parts 2/2
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let raw_body = pointers::parsed(body_orig, input);
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let raw_part = pointers::parsed(orig, input);
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Ok((
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input,
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Message {
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mime: m.clone(),
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imf,
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raw_part, raw_headers, raw_body,
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child: Box::new(part),
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},
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))
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use crate::part::discrete::Text;
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use crate::part::AnyPart;
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use crate::text::encoding::{Base64Word, EncodedWord, QuotedChunk, QuotedWord};
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use crate::text::misc_token::{Phrase, UnstrToken, Unstructured, Word, MIMEWord};
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use crate::text::quoted::QuotedString;
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use chrono::{FixedOffset, TimeZone};
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#[test]
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fn test_multipart() {
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let base_mime = mime::MIME {
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interpreted_type: mime::r#type::Multipart {
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subtype: mime::r#type::MultipartSubtype::Alternative,
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boundary: "simple boundary".to_string(),
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},
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fields: mime::NaiveMIME::default(),
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};
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let input = b"This is the preamble. It is to be ignored, though it
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is a handy place for composition agents to include an
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explanatory note to non-MIME conformant readers.
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--simple boundary
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This is implicitly typed plain US-ASCII text.
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It does NOT end with a linebreak.
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--simple boundary
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Content-type: text/plain; charset=us-ascii
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This is explicitly typed plain US-ASCII text.
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It DOES end with a linebreak.
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--simple boundary--
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This is the epilogue. It is also to be ignored.
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";
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let inner = b"
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--simple boundary
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This is implicitly typed plain US-ASCII text.
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It does NOT end with a linebreak.
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--simple boundary
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Content-type: text/plain; charset=us-ascii
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This is explicitly typed plain US-ASCII text.
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It DOES end with a linebreak.
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--simple boundary--
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";
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assert_eq!(
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multipart(base_mime.clone())(input),
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Ok((&b"\nThis is the epilogue. It is also to be ignored.\n"[..],
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Multipart {
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mime: base_mime,
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raw_part_outer: input,
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raw_part_inner: inner,
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children: vec![
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AnyPart::Txt(Text {
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mime: mime::MIME {
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interpreted_type: mime::r#type::Deductible::Inferred(mime::r#type::Text {
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subtype: mime::r#type::TextSubtype::Plain,
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charset: mime::r#type::Deductible::Inferred(mime::charset::EmailCharset::US_ASCII),
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}),
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fields: mime::NaiveMIME::default(),
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},
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body: &b"This is implicitly typed plain US-ASCII text.\nIt does NOT end with a linebreak."[..],
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}),
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AnyPart::Txt(Text {
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mime: mime::MIME {
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interpreted_type: mime::r#type::Deductible::Explicit(mime::r#type::Text {
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subtype: mime::r#type::TextSubtype::Plain,
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charset: mime::r#type::Deductible::Explicit(mime::charset::EmailCharset::US_ASCII),
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}),
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fields: mime::NaiveMIME {
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ctype: Some(mime::r#type::NaiveType {
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main: &b"text"[..],
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sub: &b"plain"[..],
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params: vec![
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mime::r#type::Parameter {
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name: &b"charset"[..],
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value: MIMEWord::Atom(&b"us-ascii"[..]),
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}
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]
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}),
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..mime::NaiveMIME::default()
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},
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},
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body: &b"This is explicitly typed plain US-ASCII text.\nIt DOES end with a linebreak.\n"[..],
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}),
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],
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},
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))
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);
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}
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#[test]
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fn test_message() {
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let fullmail: &[u8] = r#"Date: Sat, 8 Jul 2023 07:14:29 +0200
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From: Grrrnd Zero <grrrndzero@example.org>
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To: John Doe <jdoe@machine.example>
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CC: =?ISO-8859-1?Q?Andr=E9?= Pirard <PIRARD@vm1.ulg.ac.be>
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Subject: =?ISO-8859-1?B?SWYgeW91IGNhbiByZWFkIHRoaXMgeW8=?=
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=?ISO-8859-2?B?dSB1bmRlcnN0YW5kIHRoZSBleGFtcGxlLg==?=
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X-Unknown: something something
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Bad entry
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on multiple lines
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Message-ID: <NTAxNzA2AC47634Y366BAMTY4ODc5MzQyODY0ODY5@www.grrrndzero.org>
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MIME-Version: 1.0
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Content-Type: multipart/alternative;
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boundary="b1_e376dc71bafc953c0b0fdeb9983a9956"
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Content-Transfer-Encoding: 7bit
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This is a multi-part message in MIME format.
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--b1_e376dc71bafc953c0b0fdeb9983a9956
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Content-Type: text/plain; charset=utf-8
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Content-Transfer-Encoding: quoted-printable
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GZ
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OoOoO
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oOoOoOoOo
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oOoOoOoOoOoOoOoOo
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oOoOoOoOoOoOoOoOoOoOoOo
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oOoOoOoOoOoOoOoOoOoOoOoOoOoOo
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OoOoOoOoOoOoOoOoOoOoOoOoOoOoOoOoO
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--b1_e376dc71bafc953c0b0fdeb9983a9956
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Content-Type: text/html; charset=us-ascii
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<div style="text-align: center;"><strong>GZ</strong><br />
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OoOoO<br />
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oOoOoOoOo<br />
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oOoOoOoOoOoOoOoOo<br />
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oOoOoOoOoOoOoOoOoOoOoOo<br />
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oOoOoOoOoOoOoOoOoOoOoOoOoOoOo<br />
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OoOoOoOoOoOoOoOoOoOoOoOoOoOoOoOoO<br />
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</div>
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--b1_e376dc71bafc953c0b0fdeb9983a9956--
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"#
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.as_bytes();
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let hdrs = br#"Date: Sat, 8 Jul 2023 07:14:29 +0200
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From: Grrrnd Zero <grrrndzero@example.org>
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To: John Doe <jdoe@machine.example>
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CC: =?ISO-8859-1?Q?Andr=E9?= Pirard <PIRARD@vm1.ulg.ac.be>
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Subject: =?ISO-8859-1?B?SWYgeW91IGNhbiByZWFkIHRoaXMgeW8=?=
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=?ISO-8859-2?B?dSB1bmRlcnN0YW5kIHRoZSBleGFtcGxlLg==?=
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X-Unknown: something something
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Bad entry
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on multiple lines
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Message-ID: <NTAxNzA2AC47634Y366BAMTY4ODc5MzQyODY0ODY5@www.grrrndzero.org>
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MIME-Version: 1.0
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Content-Type: multipart/alternative;
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boundary="b1_e376dc71bafc953c0b0fdeb9983a9956"
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Content-Transfer-Encoding: 7bit
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"#;
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let body = br#"This is a multi-part message in MIME format.
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--b1_e376dc71bafc953c0b0fdeb9983a9956
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Content-Type: text/plain; charset=utf-8
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Content-Transfer-Encoding: quoted-printable
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GZ
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OoOoO
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oOoOoOoOo
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oOoOoOoOoOoOoOoOo
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oOoOoOoOoOoOoOoOoOoOoOo
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oOoOoOoOoOoOoOoOoOoOoOoOoOoOo
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OoOoOoOoOoOoOoOoOoOoOoOoOoOoOoOoO
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--b1_e376dc71bafc953c0b0fdeb9983a9956
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Content-Type: text/html; charset=us-ascii
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<div style="text-align: center;"><strong>GZ</strong><br />
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OoOoO<br />
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oOoOoOoOo<br />
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oOoOoOoOoOoOoOoOo<br />
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oOoOoOoOoOoOoOoOoOoOoOo<br />
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oOoOoOoOoOoOoOoOoOoOoOoOoOoOo<br />
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OoOoOoOoOoOoOoOoOoOoOoOoOoOoOoOoO<br />
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</div>
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--b1_e376dc71bafc953c0b0fdeb9983a9956--
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"#;
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let inner = br#"
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--b1_e376dc71bafc953c0b0fdeb9983a9956
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Content-Type: text/plain; charset=utf-8
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Content-Transfer-Encoding: quoted-printable
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GZ
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OoOoO
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oOoOoOoOo
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oOoOoOoOoOoOoOoOo
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oOoOoOoOoOoOoOoOoOoOoOo
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oOoOoOoOoOoOoOoOoOoOoOoOoOoOo
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OoOoOoOoOoOoOoOoOoOoOoOoOoOoOoOoO
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--b1_e376dc71bafc953c0b0fdeb9983a9956
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Content-Type: text/html; charset=us-ascii
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<div style="text-align: center;"><strong>GZ</strong><br />
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OoOoO<br />
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oOoOoOoOo<br />
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oOoOoOoOoOoOoOoOo<br />
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oOoOoOoOoOoOoOoOoOoOoOo<br />
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oOoOoOoOoOoOoOoOoOoOoOoOoOoOo<br />
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OoOoOoOoOoOoOoOoOoOoOoOoOoOoOoOoO<br />
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</div>
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--b1_e376dc71bafc953c0b0fdeb9983a9956--
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"#;
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let base_mime = mime::MIME::<mime::r#type::DeductibleMessage>::default();
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assert_eq!(
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message(base_mime.clone())(fullmail),
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Ok((
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&[][..],
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Message {
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mime: base_mime,
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raw_part: fullmail,
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raw_headers: hdrs,
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raw_body: body,
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imf: imf::Imf {
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date: Some(FixedOffset::east_opt(2 * 3600)
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.unwrap()
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.with_ymd_and_hms(2023, 07, 8, 7, 14, 29)
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.unwrap()),
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from: vec![
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imf::mailbox::MailboxRef {
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name: Some(Phrase(vec![Word::Atom(&b"Grrrnd"[..]), Word::Atom(&b"Zero"[..])])),
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addrspec: imf::mailbox::AddrSpec {
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local_part: imf::mailbox::LocalPart(vec![
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imf::mailbox::LocalPartToken::Word(Word::Atom(&b"grrrndzero"[..]))
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]),
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domain: imf::mailbox::Domain::Atoms(vec![&b"example"[..], &b"org"[..]]),
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}
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},
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],
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to: vec![imf::address::AddressRef::Single(imf::mailbox::MailboxRef {
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name: Some(Phrase(vec![Word::Atom(&b"John"[..]), Word::Atom(&b"Doe"[..])])),
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addrspec: imf::mailbox::AddrSpec {
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local_part: imf::mailbox::LocalPart(vec![
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imf::mailbox::LocalPartToken::Word(Word::Atom(&b"jdoe"[..]))
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]),
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domain: imf::mailbox::Domain::Atoms(vec![&b"machine"[..], &b"example"[..]]),
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}
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})],
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cc: vec![imf::address::AddressRef::Single(imf::mailbox::MailboxRef {
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name: Some(Phrase(vec![
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Word::Encoded(EncodedWord::Quoted(QuotedWord {
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enc: encoding_rs::WINDOWS_1252,
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chunks: vec![
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QuotedChunk::Safe(&b"Andr"[..]),
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QuotedChunk::Encoded(vec![0xE9]),
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],
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})),
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Word::Atom(&b"Pirard"[..])
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])),
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addrspec: imf::mailbox::AddrSpec {
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local_part: imf::mailbox::LocalPart(vec![
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imf::mailbox::LocalPartToken::Word(Word::Atom(&b"PIRARD"[..]))
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]),
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domain: imf::mailbox::Domain::Atoms(vec![
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&b"vm1"[..], &b"ulg"[..], &b"ac"[..], &b"be"[..],
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]),
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}
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})],
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subject: Some(Unstructured(vec![
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UnstrToken::Encoded(EncodedWord::Base64(Base64Word{
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enc: encoding_rs::WINDOWS_1252,
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content: &b"SWYgeW91IGNhbiByZWFkIHRoaXMgeW8"[..],
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})),
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UnstrToken::Encoded(EncodedWord::Base64(Base64Word{
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enc: encoding_rs::ISO_8859_2,
|
|
content: &b"dSB1bmRlcnN0YW5kIHRoZSBleGFtcGxlLg"[..],
|
|
})),
|
|
])),
|
|
msg_id: Some(imf::identification::MessageID {
|
|
left: &b"NTAxNzA2AC47634Y366BAMTY4ODc5MzQyODY0ODY5"[..],
|
|
right: &b"www.grrrndzero.org"[..],
|
|
}),
|
|
mime_version: Some(imf::mime::Version { major: 1, minor: 0}),
|
|
header_ext: vec![
|
|
header::Kv(&b"X-Unknown"[..], Unstructured(vec![
|
|
UnstrToken::Plain(&b"something"[..]),
|
|
UnstrToken::Plain(&b"something"[..]),
|
|
]))
|
|
],
|
|
header_bad: vec![
|
|
&b"Bad entry\n on multiple lines\n"[..],
|
|
],
|
|
..imf::Imf::default()
|
|
},
|
|
child: Box::new(AnyPart::Mult(Multipart {
|
|
mime: mime::MIME {
|
|
interpreted_type: mime::r#type::Multipart {
|
|
subtype: mime::r#type::MultipartSubtype::Alternative,
|
|
boundary: "b1_e376dc71bafc953c0b0fdeb9983a9956".to_string(),
|
|
},
|
|
fields: mime::NaiveMIME {
|
|
ctype: Some(mime::r#type::NaiveType {
|
|
main: &b"multipart"[..],
|
|
sub: &b"alternative"[..],
|
|
params: vec![
|
|
mime::r#type::Parameter {
|
|
name: &b"boundary"[..],
|
|
value: MIMEWord::Quoted(QuotedString(vec![&b"b1_e376dc71bafc953c0b0fdeb9983a9956"[..]])),
|
|
}
|
|
]
|
|
}),
|
|
..mime::NaiveMIME::default()
|
|
},
|
|
},
|
|
raw_part_inner: inner,
|
|
raw_part_outer: body,
|
|
children: vec![
|
|
AnyPart::Txt(Text {
|
|
mime: mime::MIME {
|
|
interpreted_type: mime::r#type::Deductible::Explicit(mime::r#type::Text {
|
|
subtype: mime::r#type::TextSubtype::Plain,
|
|
charset: mime::r#type::Deductible::Explicit(mime::charset::EmailCharset::UTF_8),
|
|
}),
|
|
fields: mime::NaiveMIME {
|
|
ctype: Some(mime::r#type::NaiveType {
|
|
main: &b"text"[..],
|
|
sub: &b"plain"[..],
|
|
params: vec![
|
|
mime::r#type::Parameter {
|
|
name: &b"charset"[..],
|
|
value: MIMEWord::Atom(&b"utf-8"[..]),
|
|
}
|
|
]
|
|
}),
|
|
transfer_encoding: mime::mechanism::Mechanism::QuotedPrintable,
|
|
..mime::NaiveMIME::default()
|
|
}
|
|
},
|
|
body: &b"GZ\nOoOoO\noOoOoOoOo\noOoOoOoOoOoOoOoOo\noOoOoOoOoOoOoOoOoOoOoOo\noOoOoOoOoOoOoOoOoOoOoOoOoOoOo\nOoOoOoOoOoOoOoOoOoOoOoOoOoOoOoOoO\n"[..],
|
|
}),
|
|
AnyPart::Txt(Text {
|
|
mime: mime::MIME {
|
|
interpreted_type: mime::r#type::Deductible::Explicit(mime::r#type::Text {
|
|
subtype: mime::r#type::TextSubtype::Html,
|
|
charset: mime::r#type::Deductible::Explicit(mime::charset::EmailCharset::US_ASCII),
|
|
}),
|
|
|
|
fields: mime::NaiveMIME {
|
|
ctype: Some(mime::r#type::NaiveType {
|
|
main: &b"text"[..],
|
|
sub: &b"html"[..],
|
|
params: vec![
|
|
mime::r#type::Parameter {
|
|
name: &b"charset"[..],
|
|
value: MIMEWord::Atom(&b"us-ascii"[..]),
|
|
}
|
|
]
|
|
}),
|
|
..mime::NaiveMIME::default()
|
|
},
|
|
},
|
|
body: &br#"<div style="text-align: center;"><strong>GZ</strong><br />
|
|
OoOoO<br />
|
|
oOoOoOoOo<br />
|
|
oOoOoOoOoOoOoOoOo<br />
|
|
oOoOoOoOoOoOoOoOoOoOoOo<br />
|
|
oOoOoOoOoOoOoOoOoOoOoOoOoOoOo<br />
|
|
OoOoOoOoOoOoOoOoOoOoOoOoOoOoOoOoO<br />
|
|
</div>
|
|
"#[..],
|
|
}),
|
|
],
|
|
})),
|
|
},
|
|
))
|
|
);
|
|
}
|
|
}
|