1 files changed, 0 insertions, 109 deletions
diff --git a/modules/nixos/cloudflare-proxy/default.nix b/modules/nixos/cloudflare-proxy/default.nix
deleted file mode 100644
index 657722d..0000000
--- a/modules/nixos/cloudflare-proxy/default.nix
+++ /dev/null
@@ -1,109 +0,0 @@
-# This module adds some extra configuration useful when running behid a Cloudflare Proxy.
-#
-{
-  config,
-  lib,
-  pkgs,
-  ...
-}: let
-  inherit (lib.options) mkEnableOption mkOption;
-  inherit (lib.modules) mkIf;
-  inherit (lib.types) listOf nonEmptyStr port;
-
-  # TODO: What happens when these get out of date??? Huh??? You little pissbaby
-  fileToList = x: lib.strings.splitString "\n" (builtins.readFile x);
-  cfipv4 = fileToList (pkgs.fetchurl {
-    url = "https://www.cloudflare.com/ips-v4";
-    hash = "sha256-8Cxtg7wBqwroV3Fg4DbXAMdFU1m84FTfiE5dfZ5Onns=";
-  });
-  cfipv6 = fileToList (pkgs.fetchurl {
-    url = "https://www.cloudflare.com/ips-v6";
-    hash = "sha256-np054+g7rQDE3sr9U8Y/piAp89ldto3pN9K+KCNMoKk=";
-  });
-
-  cfg = config.modules.cloudflare-proxy;
-in {
-  options.modules.cloudflare-proxy = {
-    enable = mkEnableOption "Cloudflare proxy IP extraction for NGINX";
-
-    firewall = {
-      IPv4Whitelist = mkOption {
-        description = "List of IPv4 addresses (or ranges) added to the whitelist.";
-        type = listOf nonEmptyStr;
-        default = [];
-      };
-
-      IPv6Whitelist = mkOption {
-        description = "List of IPv6 addresses (or ranges) added to the whitelist.";
-        type = listOf nonEmptyStr;
-        default = [];
-      };
-    };
-  };
-
-  config = mkIf cfg.enable {
-    # Teach NGINX how to extract the proxied IP from proxied requests.
-    #
-    # See: https://nixos.wiki/wiki/Nginx#Using_realIP_when_behind_CloudFlare_or_other_CDN
-    services.nginx.commonHttpConfig = let
-      realIpsFromList = lib.strings.concatMapStringsSep "\n" (x: "set_real_ip_from  ${x};");
-    in ''
-      ${realIpsFromList cfipv4}
-      ${realIpsFromList cfipv6}
-      real_ip_header CF-Connecting-IP;
-    '';
-
-    # Block non-Cloudflare IP addresses.
-    networking.firewall = let
-      chain = "cloudflare-whitelist";
-    in {
-      extraCommands = let
-        allow-interface = lib.strings.concatMapStringsSep "\n" (i: ''ip46tables --append ${chain} --in-interface ${i} --jump RETURN'');
-        allow-ip = cmd: lib.strings.concatMapStringsSep "\n" (r: ''${cmd} --append ${chain} --source ${r} --jump RETURN'');
-      in ''
-        # Flush the old firewall rules. This behavior mirrors the default firewall service.
-        # See: https://github.com/NixOS/nixpkgs/blob/ac911bf685eecc17c2df5b21bdf32678b9f88c92/nixos/modules/services/networking/firewall-iptables.nix#L59-L66
-        # TEMP: Removed 2>/dev/null
-        ip46tables --delete INPUT --protocol tcp --destination-port 80 --syn --jump ${chain} || true
-        ip46tables --delete INPUT --protocol tcp --destination-port 443 --syn --jump ${chain} || true
-        ip46tables --flush ${chain} || true
-        ip46tables --delete-chain ${chain} || true
-
-        # Create a chain that only allows whitelisted IPs through.
-        ip46tables --new-chain ${chain}
-
-        # Allow trusted interfaces through.
-        ${allow-interface config.networking.firewall.trustedInterfaces}
-
-        # Allow local whitelisted IPs through
-        ${allow-ip "iptables" cfg.firewall.IPv4Whitelist}
-        ${allow-ip "ip6tables" cfg.firewall.IPv6Whitelist}
-
-        # Allow Cloudflare's IP ranges through.
-        ${allow-ip "iptables" cfipv4}
-        ${allow-ip "ip6tables" cfipv6}
-
-        # Everything else is dropped.
-        #
-        # TODO: I would like to use `nixos-fw-log-refuse` here, but I keep
-        #       running into weird issues when reloading the firewall.
-        #       Something about the table not being deleted properly.
-        ip46tables --append ${chain} --jump DROP
-
-        # Inject our chain as the first check in INPUT (before nixos-fw).
-        # We want to capture any new incomming TCP connections.
-        ip46tables --insert INPUT 1 --protocol tcp --destination-port 80 --syn --jump ${chain}
-        ip46tables --insert INPUT 1 --protocol tcp --destination-port 443 --syn --jump ${chain}
-      '';
-      extraStopCommands = ''
-        # Clean up added rulesets (${chain}). This mirrors the behavior of the
-        # default firewall at the time of writing.
-        #
-        # See: https://github.com/NixOS/nixpkgs/blob/ac911bf685eecc17c2df5b21bdf32678b9f88c92/nixos/modules/services/networking/firewall-iptables.nix#L218-L219
-        # TEMP: Removed 2>/dev/null
-        ip46tables --delete INPUT --protocol tcp --destination-port 80 --syn --jump ${chain}  || true
-        ip46tables --delete INPUT --protocol tcp --destination-port 443 --syn --jump ${chain} || true
-      '';
-    };
-  };
-}