{"id":2042,"date":"2019-03-25T15:56:02","date_gmt":"2019-03-25T14:56:02","guid":{"rendered":"https:\/\/solidt.eu\/site\/?p=2042"},"modified":"2022-07-25T08:33:26","modified_gmt":"2022-07-25T07:33:26","slug":"c-webapi-basic-authentication","status":"publish","type":"post","link":"https:\/\/solidt.eu\/site\/c-webapi-basic-authentication\/","title":{"rendered":"C# WebAPI Basic Authentication"},"content":{"rendered":"\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"csharp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">using Microsoft.AspNetCore.Mvc;\nusing Microsoft.AspNetCore.Mvc.Filters;\nusing System;\nusing System.Linq;\nusing System.Text;\n\nnamespace WebApi.Attributes\n{\n    \/\/\/ &lt;summary>\n    \/\/\/ Handles basic authentication on a Controller class\/method\n    \/\/\/ &lt;\/summary>\n    public class BasicAuthenticationAttribute : ActionFilterAttribute\n    {\n        public void ReturnAuthorize(ActionExecutingContext context)\n        {\n            context.HttpContext.Response.Headers.Add(\"WWW-Authenticate\", \"\");\n            context.Result = new UnauthorizedResult();\n        }\n\n        public override void OnActionExecuting(ActionExecutingContext context)\n        {\n            var request = context?.HttpContext?.Request;\n            if (request == null || !request.Headers.TryGetValue(\"Authorization\", out var values))\n            {\n                ReturnAuthorize(context);\n                return;                \n            }\n            var authHeaderParts = (values.FirstOrDefault() ?? \"\").Split(' ');\n            if (authHeaderParts.Length != 2)\n            {\n                ReturnAuthorize(context);\n                return;                \n            }\n            var authType = authHeaderParts[0];\n            if (!\"Basic\".Equals(authType, StringComparison.OrdinalIgnoreCase))\n            {\n                ReturnAuthorize(context);\n                return;    \n            }\n\n            var authValues = Encoding.UTF8.GetString(Convert.FromBase64String(authHeaderParts[1])).Split(':');\n            if (authValues.Length != 2)\n            {\n                ReturnAuthorize(context);\n                return;                \n            }\n\n            var username = authValues[0] ?? \"\";\n            var password = authValues[1] ?? \"\";\n\n            if (string.IsNullOrEmpty(username) || string.IsNullOrEmpty(password))\n            {\n                ReturnAuthorize(context);\n                return;                \n            }\n\n            Console.WriteLine($\"User: {username} logged in\");\n\n            base.OnActionExecuting(context);\n        }\n    }\n}\n<\/pre>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[6,4,1],"tags":[],"class_list":["post-2042","post","type-post","status-publish","format-standard","hentry","category-dotnet","category-programming","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/posts\/2042","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/comments?post=2042"}],"version-history":[{"count":1,"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/posts\/2042\/revisions"}],"predecessor-version":[{"id":2043,"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/posts\/2042\/revisions\/2043"}],"wp:attachment":[{"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/media?parent=2042"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/categories?post=2042"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/tags?post=2042"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}