Implement auto-forward and auto-reply

dovecot/Dockerfile

@@ -9,6 +9,9 @@ RUN echo "@testing http://nl.alpinelinux.org/alpine/edge/testing" >> /etc/apk/re
      dovecot-antispam-plugin@testing \
  && rm -rf /var/cache/apk/*
 
+COPY dovecot-pigeonhole-plugin-extdata-1-r0.apk /
+RUN apk add --allow-untrusted --force dovecot-pigeonhole-plugin-extdata-1-r0.apk
+
 COPY conf /etc/dovecot
 COPY sieve /var/lib/dovecot
 

dovecot/conf/dovecot.conf

@@ -15,6 +15,10 @@ service dict {
   }
 }
 
+dict {
+  sieve = sqlite:/etc/dovecot/pigeonhole-sieve.dict
+}
+
 ###############
 # Mailboxes
 ###############
@@ -137,7 +141,10 @@ service managesieve-login {
 
 plugin {
 	sieve_dir = ~/sieve
+  sieve_plugins = sieve_extdata
+  sieve_extensions = +vnd.dovecot.extdata
 	sieve_before = /var/lib/dovecot/before.sieve
 	sieve_default = /var/lib/dovecot/default.sieve
 	sieve_after = /var/lib/dovecot/after.sieve
+  sieve_extdata_dict_uri = proxy::sieve
 }

dovecot/conf/pigeonhole-sieve.dict

@@ -0,0 +1,22 @@
+connect = /data/freeposte.db
+
+map {
+  pattern = priv/reply_subject
+  table = user
+  username_field = address
+  value_field = reply_subject
+}
+
+map {
+  pattern = priv/reply_body
+  table = user
+  username_field = address
+  value_field = reply_body
+}
+
+map {
+  pattern = priv/forward
+  table = user
+  username_field = address
+  value_field = forward
+}

dovecot/sieve/before.sieve

@@ -0,0 +1,14 @@
+require ["variables", "vacation", "vnd.dovecot.extdata"];
+
+if string :is "${extdata.reply_subject}" "" {
+
+} else {
+  vacation :days 1 :subject "${extdata.reply_subject}" "${extdata.reply_body}";
+}
+
+if string :is "${extdata.forward}" "" {
+
+} else {
+  redirect "${extdata.forward}";
+  keep;
+}