feat(ipconverter): add a tool to convert IPv4 to int and vice-versa

It's sometimes useful to store IPv4 addresses as an integer. This tool
helps with the conversion, and also does the reverse conversion.

```
% go run . int2ip 3232235521
3232235521      192.168.0.1
% go run . ip2int 192.168.0.1
192.168.0.1     3232235521
```

Change-Id: Ic1e44057bca3539b4c183d387c635f69f5bf3f36
Reviewed-on: https://cl.fcuny.net/c/world/+/441
Tested-by: CI
Reviewed-by: Franck Cuny <franck@fcuny.net>

1 files changed, 15 insertions, 0 deletions

diff --git a/tools/ipconverter/default.nix b/tools/ipconverter/default.nix
new file mode 100644
index 0000000..3be25fc
--- /dev/null
+++ b/tools/ipconverter/default.nix
@@ -0,0 +1,15 @@
+{ pkgs, ... }:
+
+pkgs.buildGoModule rec {
+  name = "ipconverter";
+  src = ./.;
+  vendorSha256 = "sha256-pQpattmS9VmO3ZIQUFn66az8GSmB4IvYhTTCFn6SUmo=";
+  nativeBuildInputs = with pkgs; [ go ];
+
+  meta = with pkgs.lib; {
+    description = "CLI to convert IP addresses to integer and vice versa";
+    license = licenses.mit;
+    platforms = platforms.linux;
+    maintainers = [ ];
+  };
+}