lei_to_mail+mbox_reader: fix handling of empty/bogus emails

We may be handling invalid mboxes, so just return no objects in
that case.  While "lei q" on HTTP(S) externals expects a gzipped
mboxrd, there's always a chance something else gzipped can be
sent to us.

There's also changes to lei_to_mail to better handle emails
which lack a body and/or headers (e.g. t/solve/bare.patch)

Link: https://public-inbox.org/meta/20210903151500.h72mzcpqixgtytjs@meerkat.local/

1 files changed, 8 insertions, 0 deletions

diff --git a/lib/PublicInbox/Eml.pm b/lib/PublicInbox/Eml.pm
index 955d6a96..0867a016 100644
--- a/lib/PublicInbox/Eml.pm
+++ b/lib/PublicInbox/Eml.pm
@@ -480,6 +480,14 @@ sub charset_set {
 
 sub crlf { $_[0]->{crlf} // "\n" }
 
+sub raw_size {
+        my ($self) = @_;
+        my $len = length(${$self->{hdr}});
+        defined($self->{bdy}) and
+                $len += length(${$self->{bdy}}) + length($self->{crlf});
+        $len;
+}
+
 # warnings to ignore when handling spam mailboxes and maybe other places
 sub warn_ignore {
         my $s = "@_";