add neural config switching

mailserver.env

@@ -182,6 +182,12 @@ RSPAMD_HFILTER=1
 # Default: 6
 RSPAMD_HFILTER_HOSTNAME_UNKNOWN_SCORE=6
 
+# Can be used to enable or disable the neural module.
+#
+# - 0     => Disabled
+# - **1** => Enabled
+RSPAMD_Neural=0
+
 # Amavis content filter (used for ClamAV & SpamAssassin)
 # 0 => Disabled
 # 1 => Enabled

target/scripts/startup/setup.d/security/rspamd.sh

@@ -20,6 +20,7 @@ function _setup_rspamd() {
     __rspamd__setup_learning
     __rspamd__setup_greylisting
     __rspamd__setup_hfilter_group
+    __rspamd__setup_neural
     __rspamd__setup_check_authenticated
     _rspamd_handle_user_modules_adjustments   # must run last
 
@@ -283,6 +284,25 @@ function __rspamd__setup_hfilter_group() {
   fi
 }
 
+
+# This function handles setup of the neural module (see
+# https://www.rspamd.com/doc/modules/neural.html). This module is experimental 
+# but can enhance anti-spam scoring possibly.
+function __rspamd__setup_neural() {
+  local MODULE_FILE="${RSPAMD_LOCAL_D}/neural.conf"
+  readonly MODULE_FILE
+  local MODULE_FILE_2="${RSPAMD_LOCAL_D}/neural_group.conf"
+  readonly MODULE_FILE_2
+  if _env_var_expect_zero_or_one 'RSPAMD_NEURAL' && [[ ${RSPAMD_NEURAL} -eq 1 ]]; then
+    __rspamd__log 'debug' 'neural module is enabled'
+  else
+    __rspamd__log 'debug' 'Disabling neural (group) module'
+    rm -f "${MODULE_FILE}"
+    rm -f "${MODULE_FILE_2}"
+  fi
+}
+
+
 # If 'RSPAMD_CHECK_AUTHENTICATED' is enabled, then content checks for all users, i.e.
 # also for authenticated users, are performed.
 #

target/scripts/startup/variables-stack.sh

@@ -65,6 +65,7 @@ function __environment_variables_general_setup() {
   VARS[RSPAMD_GREYLISTING]="${RSPAMD_GREYLISTING:=0}"
   VARS[RSPAMD_HFILTER]="${RSPAMD_HFILTER:=1}"
   VARS[RSPAMD_HFILTER_HOSTNAME_UNKNOWN_SCORE]="${RSPAMD_HFILTER_HOSTNAME_UNKNOWN_SCORE:=6}"
+  VARS[RSPAMD_NEURAL]="${RSPAMD_NEURAL:=1}"
   VARS[RSPAMD_LEARN]="${RSPAMD_LEARN:=0}"
   VARS[SA_KILL]=${SA_KILL:="10.0"}
   VARS[SA_SPAM_SUBJECT]=${SA_SPAM_SUBJECT:="***SPAM*** "}