Move ssh ldap password to a secure location

Related issue: https://git.immae.eu/mantisbt/view.php?id=122

diff --git a/nixops/modules/ssh/default.nix b/nixops/modules/ssh/default.nix
index b28f6cac6242cce8105529b19e81edb25b3f8dc2..924f86e213427d18f9e16cc9298ebab2a1002c7f 100644 (file)
--- a/nixops/modules/ssh/default.nix
+++ b/nixops/modules/ssh/default.nix
@@ -8,17 +8,25 @@
       AuthorizedKeysCommandUser nobody
       '';
 
+    deployment.keys = {
+      ssh-ldap = {
+        user = "nobody";
+        group = "nobody";
+        permissions = "0400";
+        text = myconfig.env.sshd.ldap.password;
+      };
+    };
+    system.activationScripts.sshd = ''
+      install -Dm400 -o nobody -g nobody -T /run/keys/ssh-ldap /etc/ssh/ldap_password
+      '';
+    # ssh is strict about parent directory having correct rights, don't
+    # move it in the nix store.
     environment.etc."ssh/ldap_authorized_keys" = let
       ldap_authorized_keys =
         mylibs.wrap {
           name = "ldap_authorized_keys";
           file = ./ldap_authorized_keys.sh;
-          vars = {
-            LDAP_PASS = myconfig.env.sshd.ldap.password;
-            GITOLITE_SHELL = "${pkgs.gitolite}/bin/gitolite-shell";
-            ECHO = "${pkgs.coreutils}/bin/echo";
-          };
-          paths = [ pkgs.openldap pkgs.stdenv.shellPackage pkgs.gnugrep pkgs.gnused pkgs.coreutils ];
+          paths = [ pkgs.which pkgs.gitolite pkgs.openldap pkgs.stdenv.shellPackage pkgs.gnugrep pkgs.gnused pkgs.coreutils ];
         };
     in {
       enable = true;

diff --git a/nixops/modules/ssh/ldap_authorized_keys.sh b/nixops/modules/ssh/ldap_authorized_keys.sh
index d869d74a063b9dcb076ef0af8e53a04eea0d5234..d556452d86d44d6690376551ce94d7158a9eee23 100755 (executable)
--- a/nixops/modules/ssh/ldap_authorized_keys.sh
+++ b/nixops/modules/ssh/ldap_authorized_keys.sh
@@ -3,13 +3,15 @@
 LDAPSEARCH=ldapsearch
 KEY="immaeSshKey"
 LDAP_BIND="cn=ssh,ou=services,dc=immae,dc=eu"
-#LDAP_PASS="password taken from environment"
+LDAP_PASS=$(cat /etc/ssh/ldap_password)
 LDAP_HOST="ldap.immae.eu"
 LDAP_MEMBER="cn=users,cn=ssh,ou=services,dc=immae,dc=eu"
 LDAP_GITOLITE_MEMBER="cn=users,cn=gitolite,ou=services,dc=immae,dc=eu"
 LDAP_PUB_RESTRICT_MEMBER="cn=restrict,cn=pub,ou=services,dc=immae,dc=eu"
 LDAP_PUB_FORWARD_MEMBER="cn=forward,cn=pub,ou=services,dc=immae,dc=eu"
 LDAP_BASE="dc=immae,dc=eu"
+GITOLITE_SHELL=$(which gitolite-shell)
+ECHO=$(which echo)
 
 suitable_for() {
   type_for="$1"