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webmail: when moving a single message out of/to the inbox, ask if user wants to create a rule to automatically do that server-side for future deliveries

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if the message has a list-id header, we assume this is a (mailing) list
message, and we require a dkim/spf-verified domain (we prefer the shortest that
is a suffix of the list-id value). the rule we would add will mark such
messages as from a mailing list, changing filtering rules on incoming messages
(not enforcing dmarc policies). messages will be matched on list-id header and
will only match if they have the same dkim/spf-verified domain.

if the message doesn't have a list-id header, we'll ask to match based on
"message from" address.

we don't ask the user in several cases:
- if the destination/source mailbox is a special-use mailbox (e.g.
  trash,archive,sent,junk; inbox isn't included)
- if the rule already exist (no point in adding it again).
- if the user said "no, not for this list-id/from-address" in the past.
- if the user said "no, not for messages moved to this mailbox" in the past.

we'll add the rule if the message was moved out of the inbox.
if the message was moved to the inbox, we check if there is a matching rule
that we can remove.

we now remember the "no" answers (for list-id, msg-from-addr and mailbox) in
the account database.

to implement the msgfrom rules, this adds support to rulesets for matching on
message "from" address. before, we could match on smtp from address (and other
fields). rulesets now also have a field for comments. webmail adds a note that
it created the rule, with the date.

manual editing of the rulesets is still in the webaccount page. this webmail
functionality is just a convenient way to add/remove common rules.
This commit is contained in:
Mechiel Lukkien
2024-04-21 17:01:50 +02:00
parent 71c0bd2dd1
commit 6c0439cf7b
21 changed files with 1033 additions and 35 deletions
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12
webmail/webmail_test.go
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@ -188,6 +188,7 @@ var (
From: "mjl <mjl@mox.example>",
To: "mox <mox@other.example>",
Subject: "html message",
Headers: [][2]string{{"List-Id", "test <list.mox.example>"}},
Part: Part{Type: "text/html", Content: `<html>the body <img src="cid:img1@mox.example" /></html>`},
}
msgAlt = Message{
@ -265,7 +266,16 @@ func tdeliver(t *testing.T, acc *store.Account, tm *testmsg) {
defer msgFile.Close()
size, err := msgFile.Write(tm.msg.Marshal(t))
tcheck(t, err, "write message temp")
m := store.Message{Flags: tm.Flags, Keywords: tm.Keywords, Size: int64(size)}
m := store.Message{
Flags: tm.Flags,
RcptToLocalpart: "mox",
RcptToDomain: "other.example",
MsgFromLocalpart: "mjl",
MsgFromDomain: "mox.example",
DKIMDomains: []string{"mox.example"},
Keywords: tm.Keywords,
Size: int64(size),
}
err = acc.DeliverMailbox(pkglog, tm.Mailbox, &m, msgFile)
tcheck(t, err, "deliver test message")
err = msgFile.Close()