add http server root password protection (#757)

- Feature: Added `--security-config-path` option to zenserver to configure security settings
  - Expects a path to a .json file
  - Default is an empty path resulting in no extra security settings and legacy behavior
  - Current support is a top level filter of incoming http requests restricted to the `password` type
  - `password` type will check the `Authorization` header and match it to the selected authorization strategy
  - Currently the security settings is very basic and configured to a fixed username+password at startup

        {
            "http" {
                "root": {
                    "filter": {
                        "type": "password",
                        "config": {
	                          "password": {
	                              "username": "<username>",
	                              "password": "<password>"
	                          },
                            "protect-machine-local-requests": false,
	                          "unprotected-uris": [
	                              "/health/",
	                              "/health/info",
	                              "/health/version"
	                          ]
                        }
                    }
                }
            }
        }

1 files changed, 16 insertions, 0 deletions

diff --git a/src/zencore/include/zencore/string.h b/src/zencore/include/zencore/string.h
index cbff6454f..5a12ba5d2 100644
--- a/src/zencore/include/zencore/string.h
+++ b/src/zencore/include/zencore/string.h
@@ -797,6 +797,22 @@ HashStringDjb2(const std::string_view& InString)
 }
 
 constexpr uint32_t
+HashStringDjb2(const std::span<const std::string_view> InStrings)
+{
+	uint32_t HashValue = 5381;
+
+	for (const std::string_view& String : InStrings)
+	{
+		for (int CurChar : String)
+		{
+			HashValue = HashValue * 33 + CurChar;
+		}
+	}
+
+	return HashValue;
+}
+
+constexpr uint32_t
 HashStringAsLowerDjb2(const std::string_view& InString)
 {
 	uint32_t HashValue = 5381;