156 lines
5.0 KiB
Rust
156 lines
5.0 KiB
Rust
use anyhow::{Error, Result};
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use boitalettres::proto::{res::body::Data as Body, Request, Response};
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use imap_codec::types::command::CommandBody;
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use imap_codec::types::core::Atom;
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use imap_codec::types::flag::Flag;
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use imap_codec::types::mailbox::{ListMailbox, Mailbox as MailboxCodec};
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use imap_codec::types::response::{Code, Data, Status};
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use crate::imap::command::anonymous;
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use crate::imap::flow;
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use crate::mail::mailbox::Mailbox;
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use crate::mail::user::User;
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const DEFAULT_FLAGS: [Flag; 5] = [
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Flag::Seen,
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Flag::Answered,
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Flag::Flagged,
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Flag::Deleted,
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Flag::Draft,
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];
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pub struct AuthenticatedContext<'a> {
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pub req: &'a Request,
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pub user: &'a User,
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}
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pub async fn dispatch<'a>(ctx: AuthenticatedContext<'a>) -> Result<(Response, flow::Transition)> {
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match &ctx.req.command.body {
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CommandBody::Lsub {
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reference,
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mailbox_wildcard,
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} => ctx.lsub(reference, mailbox_wildcard).await,
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CommandBody::List {
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reference,
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mailbox_wildcard,
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} => ctx.list(reference, mailbox_wildcard).await,
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CommandBody::Select { mailbox } => ctx.select(mailbox).await,
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_ => {
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let ctx = anonymous::AnonymousContext {
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req: ctx.req,
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login_provider: None,
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};
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anonymous::dispatch(ctx).await
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}
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}
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}
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// --- PRIVATE ---
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impl<'a> AuthenticatedContext<'a> {
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async fn lsub(
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self,
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_reference: &MailboxCodec,
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_mailbox_wildcard: &ListMailbox,
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) -> Result<(Response, flow::Transition)> {
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Ok((Response::bad("Not implemented")?, flow::Transition::None))
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}
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async fn list(
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self,
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_reference: &MailboxCodec,
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_mailbox_wildcard: &ListMailbox,
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) -> Result<(Response, flow::Transition)> {
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Ok((Response::bad("Not implemented")?, flow::Transition::None))
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}
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/*
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* TRACE BEGIN ---
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Example: C: A142 SELECT INBOX
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S: * 172 EXISTS
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S: * 1 RECENT
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S: * OK [UNSEEN 12] Message 12 is first unseen
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S: * OK [UIDVALIDITY 3857529045] UIDs valid
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S: * OK [UIDNEXT 4392] Predicted next UID
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S: * FLAGS (\Answered \Flagged \Deleted \Seen \Draft)
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S: * OK [PERMANENTFLAGS (\Deleted \Seen \*)] Limited
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S: A142 OK [READ-WRITE] SELECT completed
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--- a mailbox with no unseen message -> no unseen entry
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20 select "INBOX.achats"
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* FLAGS (\Answered \Flagged \Deleted \Seen \Draft $Forwarded JUNK $label1)
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* OK [PERMANENTFLAGS (\Answered \Flagged \Deleted \Seen \Draft $Forwarded JUNK $label1 \*)] Flags permitted.
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* 88 EXISTS
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* 0 RECENT
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* OK [UIDVALIDITY 1347986788] UIDs valid
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* OK [UIDNEXT 91] Predicted next UID
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* OK [HIGHESTMODSEQ 72] Highest
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20 OK [READ-WRITE] Select completed (0.001 + 0.000 secs).
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* TRACE END ---
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*/
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async fn select(self, mailbox: &MailboxCodec) -> Result<(Response, flow::Transition)> {
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let name = String::try_from(mailbox.clone())?;
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let mut mb = self.user.open_mailbox(name)?;
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tracing::info!(username=%self.user.username, mailbox=%name, "mailbox.selected");
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let sum = mb.summary().await?;
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tracing::trace!(summary=%sum, "mailbox.summary");
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let mut res = Vec::<Body>::new();
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res.push(Body::Data(Data::Exists(sum.exists)));
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res.push(Body::Data(Data::Recent(sum.recent)));
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let mut flags: Vec<Flag> = sum.flags.map(|f| match f.chars().next() {
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Some('\\') => None,
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Some('$') if f == "$unseen" => None,
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Some(_) => match Atom::try_from(f.clone()) {
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Err(_) => {
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tracing::error!(username=%self.user.username, mailbox=%name, flag=%f, "Unable to encode flag as IMAP atom");
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None
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},
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Ok(a) => Some(Flag::Keyword(a)),
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},
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None => None,
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}).flatten().collect();
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flags.extend_from_slice(&DEFAULT_FLAGS);
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res.push(Body::Data(Data::Flags(flags.clone())));
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let uid_validity = Status::ok(None, Some(Code::UidValidity(sum.validity)), "UIDs valid")
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.map_err(Error::msg)?;
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res.push(Body::Status(uid_validity));
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let next_uid = Status::ok(None, Some(Code::UidNext(sum.next)), "Predict next UID")
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.map_err(Error::msg)?;
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res.push(Body::Status(next_uid));
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if let Some(unseen) = sum.unseen {
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let status_unseen =
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Status::ok(None, Some(Code::Unseen(unseen.clone())), "First unseen UID")
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.map_err(Error::msg)?;
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res.push(Body::Status(status_unseen));
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}
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flags.push(Flag::Permanent);
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let permanent_flags =
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Status::ok(None, Some(Code::PermanentFlags(flags)), "Flags permitted")
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.map_err(Error::msg)?;
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res.push(Body::Status(permanent_flags));
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Ok((
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Response::ok("Select completed")?
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.with_extra_code(Code::ReadWrite)
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.with_body(res),
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flow::Transition::Select(mb),
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))
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}
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}
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