config

commit f551238d5e110064459a9a43247ac1f7f17f6bd2
parent 25503c85158d3edf61a96eca7e03de0866155ad3
Author: Jacob R. Edwards <n/a>
Date:   Tue,  1 Mar 2022 19:39:26 -0800

Add ssh mail syncing scripts

Diffstat:
A
local/bin/bin/incmail
 | 
25
+++++++++++++++++++++++++
A
local/bin/bin/sendmaildir
 | 
21
+++++++++++++++++++++
M
local/ssh/.ssh/config
 | 
5
+++++

3 files changed, 51 insertions(+), 0 deletions(-)
diff --git a/local/bin/bin/incmail b/local/bin/bin/incmail
@@ -0,0 +1,25 @@
+#!/bin/sh
+# Copyright 2022 Jacob R. Edwards
+# Like pop3, but using sshd
+#
+# There are a few reasons I'm using this instead of pop3:
+#
+# - I couldn't find a good pop3 client (though popa3d looks like a
+#   good server, since I'd tunnel through ssh anyway)
+# - No extra network daemons running (assuming sshd is already)
+# - Uses a general purpose tool
+#
+# This requires rsync(1), here is the reasoning:
+#
+# sftp(1) could be used, but it can't be sufficiently restricted
+# for passwordless authentication. openrsync(1) would be great, but
+# it can't delete source files; rsync(1) it is.
+
+# Pick through ssh output and find the remote command run, then add
+# it to your authorized_keys like so:
+# restrict,command="rsync ... " ssh-rsa ...
+#rsync() command rsync -e 'ssh -v' "$@"
+
+rsync -az --remove-source-files "${1:-mail}":Maildir "$HOME"
+# Comment if you use maildir
+sendmaildir
diff --git a/local/bin/bin/sendmaildir b/local/bin/bin/sendmaildir
@@ -0,0 +1,21 @@
+#!/bin/sh
+# Copyright 2022 Jacob R. Edwards
+# Send mail from Maildir to mbox
+# (specifically for OpenBSD)
+
+! test -d "$HOME"/Maildir &&
+	exit 0
+
+IFS='
+'
+for mail in $(find "$HOME"/Maildir -type f)
+do
+	if /usr/libexec/mail.local "$USER" < "$mail"
+	then
+		rm -f "$mail"
+	else
+		echo "$mail: Unable to move to mbox" 1>&2
+	fi
+done
+
+find "$HOME"/Maildir -type d -empty -delete
diff --git a/local/ssh/.ssh/config b/local/ssh/.ssh/config
@@ -18,6 +18,11 @@ Hostname jacobedwards.org # 46.23.91.219
 IdentityFile /home/jacob/.ssh/rsa-ids/ams/jacob
 User jacob
 
+Host mail
+Hostname jacobedwards.org
+IdentityFile /home/jacob/.ssh/rsa-ids/ams/mail
+User jacob
+
 Host amshost
 Hostname server14.openbsd.amsterdam
 IdentityFile /home/jacob/.ssh/rsa-ids/ams/jacob