apparmor.d -> profiles

profiles/exim4

@@ -0,0 +1,89 @@
+# vim:syntax=apparmor
+# ------------------------------------------------------------------
+#
+#    Copyright (C) 2018-2021 Mikhail Morfikov
+#
+#    This program is free software; you can redistribute it and/or
+#    modify it under the terms of version 2 of the GNU General Public
+#    License published by the Free Software Foundation.
+#
+# ------------------------------------------------------------------
+
+abi <abi/3.0>,
+
+include <tunables/global>
+
+@{exec_path} = /{usr/,}sbin/exim4
+profile exim4 @{exec_path} {
+  include <abstractions/base>
+  include <abstractions/consoles>
+  include <abstractions/nameservice-strict>
+
+  network inet dgram,
+  network inet6 dgram,
+  network inet stream,
+  network inet6 stream,
+  network netlink raw,
+
+  @{exec_path} mrix,
+
+  # To bind to port 25/tcp
+  capability net_bind_service,
+
+  # To remove the following error:
+  #  exim4[]: exim: setgroups() failed: Operation not permitted
+  capability setgid,
+
+  # To remove the following error:
+  #  exim4[]: unable to set gid=110 or uid=105 (euid=0): calling tls_validate_require_cipher
+  capability setuid,
+
+  # To remove the following error:
+  # exim4[]: Cannot open main log file "/var/log/exim4/mainlog": Permission denied: euid=0 egid=110
+  capability dac_read_search,
+  capability dac_override,
+
+  # To remove the following error:
+  #  exim.c:774: chown(/var/spool/exim4//msglog//1kqH5Z-000RUf-UR, 105:110) failed (Operation not
+  #  permitted). Please contact the authors and refer to https://bugs.exim.org/show_bug.cgi?id=2391
+  capability chown,
+
+  # To remove the following error:
+  #  Couldn't chmod message log /var/spool/exim4//msglog//1kqH6c-000S7r-Ni: Operation not permitted
+  capability fowner,
+
+  # Needed?
+  audit deny capability net_admin,
+
+  /var/lib/exim4/config.autogenerated{,.tmp} r,
+
+  /etc/email-addresses r,
+  /etc/aliases r,
+
+  deny /var/log/exim4/ w,
+  /var/log/exim4/mainlog w,
+  /var/log/exim4/paniclog w,
+
+  owner /var/spool/exim4/ r,
+        /var/spool/exim4/input/ r,
+        /var/spool/exim4/input/*-*-*-* rwk,
+  owner /var/spool/exim4/input/hdr.*-*-* rw,
+  owner /var/spool/exim4/input/hdr.@{pid} rw,
+        /var/spool/exim4/db/retry.lockfile rwk,
+        /var/spool/exim4/msglog/*-*-* w,
+
+  owner /var/mail/* rwk,
+  owner /var/mail/*.lock.*.[0-9a-f]*.[0-9a-f]* w,
+  owner /var/mail/*.lock wl -> /var/mail/*.lock.*.[0-9a-f]*.[0-9a-f]*,
+
+  owner @{run}/exim4/exim.pid rw,
+
+  owner @{run}/dbus/system_bus_socket rw,
+
+  # file_inherit
+  /tmp/#[0-9]*[0-9] rw,
+  /var/lib/dpkg/status r,
+  /var/log/cron-apt/lastfullmessage r,
+
+  include if exists <local/exim4>
+}