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authorGuilhem Moulin <guilhem@fripost.org>2020-05-21 01:35:28 +0200
committerGuilhem Moulin <guilhem@fripost.org>2020-05-21 02:26:16 +0200
commit5118f8d3394579a245b355c863c69410fe92e26e (patch)
tree54fbaf5aca0a1d798fbecca9ba7929f3b25a604e /roles/IMAP/tasks
parent1df4c30a95abd9e7c6352e2b3d2766281c3e591d (diff)
dovecot-auth-proxy: replace directory traversal with LDAP lookups.
This provides better isolation opportunity as the service doesn't need to run as ‘vmail’ user. We use a dedicated system user instead, and LDAP ACLs to limit its access to the strict minimum. The new solution is also more robust to quoting/escaping, and doesn't depend on ‘home=/home/mail/virtual/%d/%n’ (we might use $entryUUID instead of %d/%n at some point to make user renaming simpler). OTOH we no longer lists users that have been removed from LDAP but still have a mailstore lingering around. This is fair.
Diffstat (limited to 'roles/IMAP/tasks')
-rw-r--r--roles/IMAP/tasks/imap.yml16
1 files changed, 16 insertions, 0 deletions
diff --git a/roles/IMAP/tasks/imap.yml b/roles/IMAP/tasks/imap.yml
index 429854e..4a157af 100644
--- a/roles/IMAP/tasks/imap.yml
+++ b/roles/IMAP/tasks/imap.yml
@@ -18,6 +18,13 @@
password=!
state=present
+- name: Install Net::LDAP and Authen::SASL
+ apt: pkg={{ packages }}
+ vars:
+ packages:
+ - libnet-ldap-perl
+ - libauthen-sasl-perl
+
- name: Copy dovecot auth proxy
copy: src=usr/local/bin/dovecot-auth-proxy.pl
dest=/usr/local/bin/dovecot-auth-proxy.pl
@@ -30,6 +37,15 @@
tags:
- sysctl
+- name: Create '_dovecot-auth-proxy' user
+ user: name=_dovecot-auth-proxy system=yes
+ group=nogroup
+ createhome=no
+ home=/nonexistent
+ shell=/usr/sbin/nologin
+ password=!
+ state=present
+
- name: Copy dovecot auth proxy systemd unit files
copy: src=etc/systemd/system/{{ item }}
dest=/etc/systemd/system/{{ item }}