Add milter to verify from

[perso/Immae/Config/Nix.git] / modules / private / mail / postfix.nix

diff --git a/modules/private/mail/postfix.nix b/modules/private/mail/postfix.nix
index 8fe06dac426d70a3fa3a9c06961b8e9757034a0a..e0347ec11a975d01e67d3da796f63bc2718c476e 100644 (file)
--- a/modules/private/mail/postfix.nix
+++ b/modules/private/mail/postfix.nix
@@ -1,4 +1,4 @@
-{ lib, pkgs, config, nodes, name, ... }:
+{ lib, pkgs, config, nodes, ... }:
 {
   config = lib.mkIf config.myServices.mail.enable {
     services.duplyBackup.profiles.mail.excludeFile = ''
@@ -220,7 +220,13 @@
           '';
         scripts = lib.attrsets.mapAttrs (n: v:
           toScript n (pkgs.callPackage (builtins.fetchGit { url = v.src.url; ref = "master"; rev = v.src.rev; }) { scriptEnv = v.env; })
-        ) config.myEnv.mail.scripts;
+        ) config.myEnv.mail.scripts // {
+          testmail = pkgs.writeScript "testmail" ''
+            #! ${pkgs.stdenv.shell}
+            ${pkgs.coreutils}/bin/touch \
+              "/var/lib/naemon/checks/email/$(${pkgs.procmail}/bin/formail -x To: | ${pkgs.coreutils}/bin/tr -d ' <>')"
+            '';
+        };
       in builtins.concatStringsSep "\n" (lib.attrsets.mapAttrsToList (n: v: ''${n}: "|${v}"'') scripts);
       mapFiles = let
         recipient_maps = let
@@ -246,8 +252,12 @@
           ) config.myEnv.mail.postfix.backup_domains
         );
         virtual_map = {
-          virtual = pkgs.writeText "postfix-virtual" (
+          virtual = let
+            cfg = config.myEnv.monitoring.email_check.eldiron;
+            address = "${cfg.mail_address}@${cfg.mail_domain}";
+          in pkgs.writeText "postfix-virtual" (
             builtins.concatStringsSep "\n" (
+              ["${address} testmail@localhost"] ++
               lib.attrsets.mapAttrsToList (
                 n: v: lib.optionalString v.external ''
                   script_${n}@mail.immae.eu ${n}@localhost, scripts@mail.immae.eu
@@ -257,11 +267,14 @@
           );
         };
         sasl_access = {
-          host_sender_login = pkgs.writeText "host-sender-login"
-            (builtins.concatStringsSep "\n" (lib.flatten (lib.attrsets.mapAttrsToList
-            (n: v: (map (e: "${e}  ${n}@immae.eu") v.emails)) config.myEnv.servers)));
+          host_sender_login = with lib.attrsets; let
+            addresses = zipAttrs (lib.flatten (mapAttrsToList
+              (n: v: (map (e: { "${e}" = "${n}@immae.eu"; }) v.emails)) config.myEnv.servers));
+            joined = builtins.concatStringsSep ",";
+          in pkgs.writeText "host-sender-login"
+            (builtins.concatStringsSep "\n" (mapAttrsToList (n: v: "${n} ${joined v}") addresses));
           host_dummy_mailboxes = pkgs.writeText "host-virtual-mailbox"
-            (builtins.concatStringsSep "\n" (lib.attrsets.mapAttrsToList (n: v: "${n}@immae.eu  dummy") nodes));
+            (builtins.concatStringsSep "\n" (["immae-eu@immae.eu dummy"] ++ lib.attrsets.mapAttrsToList (n: v: "${n}@immae.eu  dummy") nodes));
         };
       in
         recipient_maps // relay_restrictions // virtual_map // sasl_access;
@@ -279,7 +292,7 @@
         ### Virtual mailboxes config
         virtual_alias_maps = "hash:/etc/postfix/virtual mysql:${config.secrets.fullPaths."postfix/mysql_alias_maps"} ldap:${config.secrets.fullPaths."postfix/ldap_ejabberd_users_immae_fr"}";
         virtual_mailbox_domains = config.myEnv.mail.postfix.additional_mailbox_domains
-        ++ lib.remove "localhost.immae.eu" (lib.remove null (lib.flatten (map
+        ++ lib.remove null (lib.flatten (map
             (zone: map
               (e: if e.receive
               then "${e.domain}${lib.optionalString (e.domain != "") "."}${zone.name}"
@@ -288,7 +301,7 @@
               (zone.withEmail or [])
             )
             config.myEnv.dns.masterZones
-          )));
+          ));
         virtual_mailbox_maps = "hash:/etc/postfix/host_dummy_mailboxes mysql:${config.secrets.fullPaths."postfix/mysql_mailbox_maps"}";
         dovecot_destination_recipient_limit = "1";
         virtual_transport = "dovecot";
@@ -364,15 +377,13 @@
         ];
         smtpd_recipient_restrictions = "permit_sasl_authenticated,reject";
         milter_macro_daemon_name = "ORIGINATING";
-        smtpd_milters = "unix:${config.myServices.mail.milters.sockets.opendkim}";
+        smtpd_milters = builtins.concatStringsSep "," [
+          # FIXME: put it back when opensmtpd is upgraded and able to
+          # rewrite the from header
+          #"unix:/run/milter_verify_from/verify_from.sock"
+          "unix:${config.myServices.mail.milters.sockets.opendkim}"
+        ];
       };
-      # FIXME: Mail adressed to localhost.immae.eu will still have mx-1 as
-      # prioritized MX, which provokes "mail for localhost.immae.eu loops
-      # back to myself" errors. This transport entry forces to push
-      # e-mails to its right destination.
-      transport = ''
-        localhost.immae.eu   smtp:[immae.eu]:25
-        '';
       destination = ["localhost"];
       # This needs to reverse DNS
       hostname = config.hostEnv.fqdn;
@@ -425,5 +436,25 @@
         "smtp.immae.eu" = null;
       };
     };
+    system.activationScripts.testmail = {
+      deps = [ "users" ];
+      text = let
+        allCfg = config.myEnv.monitoring.email_check;
+        cfg = allCfg.eldiron;
+        reverseTargets = builtins.attrNames (lib.attrsets.filterAttrs (k: v: builtins.elem "eldiron" v.targets) allCfg);
+        to_email = cfg': host':
+          let sep = if lib.strings.hasInfix "+" cfg'.mail_address then "_" else "+";
+          in "${cfg'.mail_address}${sep}${host'}@${cfg'.mail_domain}";
+        mails_to_receive = builtins.concatStringsSep " " (map (to_email cfg) reverseTargets);
+      in ''
+        install -m 0555 -o nobody -g nogroup -d /var/lib/naemon/checks/email
+        for f in ${mails_to_receive}; do
+          if [ ! -f /var/lib/naemon/checks/email/$f ]; then
+            install -m 0644 -o nobody -g nogroup /dev/null -T /var/lib/naemon/checks/email/$f
+            touch -m -d @0 /var/lib/naemon/checks/email/$f
+          fi
+        done
+        '';
+    };
   };
 }