From e89cf20d4310070a877c2e24a287659546b561c9 Mon Sep 17 00:00:00 2001
From: tv <tv@krebsco.de>
Date: Wed, 28 Feb 2018 21:02:21 +0100
Subject: import stockholm's deployment tools

https://cgit.krebsco.de/stockholm 877b4104370c1ea9698a449e376e2842d7c372fd
---
 lib/types/posix.nix | 54 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 lib/types/posix.nix

(limited to 'lib/types/posix.nix')

diff --git a/lib/types/posix.nix b/lib/types/posix.nix
new file mode 100644
index 0000000..e8f464e
--- /dev/null
+++ b/lib/types/posix.nix
@@ -0,0 +1,54 @@
+{ lib }: rec {
+
+  # RFC952, B. Lexical grammar, <hname>
+  hostname = lib.mkOptionType {
+    name = "hostname";
+    check = x: lib.isString x && lib.all label.check (lib.splitString "." x);
+    merge = lib.mergeOneOption;
+  };
+
+  # RFC952, B. Lexical grammar, <name>
+  # RFC1123, 2.1  Host Names and Numbers
+  label = lib.mkOptionType {
+    name = "label";
+    # TODO case-insensitive labels
+    check = lib.test "[0-9A-Za-z]([0-9A-Za-z-]*[0-9A-Za-z])?";
+    merge = lib.mergeOneOption;
+  };
+
+  # POSIX.1‐2013, 3.278 Portable Filename Character Set
+  filename = lib.mkOptionType {
+    name = "POSIX filename";
+    check = lib.test "([0-9A-Za-z._])[0-9A-Za-z._-]*";
+    merge = lib.mergeOneOption;
+  };
+
+  # POSIX.1‐2013, 3.2 Absolute Pathname
+  absolute-pathname = lib.mkOptionType {
+    name = "POSIX absolute pathname";
+    check = x: lib.isString x && lib.substring 0 1 x == "/" && pathname.check x;
+    merge = lib.mergeOneOption;
+  };
+
+  # POSIX.1‐2013, 3.267 Pathname
+  pathname = lib.mkOptionType {
+    name = "POSIX pathname";
+    check = x:
+      let
+        # The filter is used to normalize paths, i.e. to remove duplicated and
+        # trailing slashes.  It also removes leading slashes, thus we have to
+        # check for "/" explicitly below.
+        xs = lib.filter (s: lib.stringLength s > 0) (lib.splitString "/" x);
+      in
+        lib.isString x && (x == "/" || (lib.length xs > 0 && lib.all filename.check xs));
+    merge = lib.mergeOneOption;
+  };
+
+  # POSIX.1-2013, 3.431 User Name
+  username = lib.mkOptionType {
+    name = "POSIX username";
+    check = filename.check;
+    merge = lib.mergeOneOption;
+  };
+
+}
-- 
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