Initial commit

CleanFlashCommon/UpdateChecker.cs

@@ -0,0 +1,83 @@
+using System;
+using System.Linq;
+using System.Text;
+using System.Net;
+using System.Runtime.Serialization.Json;
+using System.Xml;
+using System.Xml.Linq;
+
+namespace CleanFlashCommon {
+    public class Version {
+        private string name;
+        private string version;
+        private string url;
+
+        public Version(string name, string version, string url) {
+            this.name = name;
+            this.version = version;
+            this.url = url;
+        }
+
+        public string GetName() {
+            return name;
+        }
+
+        public string GetVersion() {
+            return version;
+        }
+
+        public string GetUrl() {
+            return url;
+        }
+    }
+
+    public class UpdateChecker {
+        private static readonly string FLASH_VERSION = "34.0.0.155";
+        private static readonly string VERSION = "v34.0.0.155";
+        private static readonly string AUTHOR = "cleanflash";
+        private static readonly string REPO = "installer";
+        private static readonly string USER_AGENT = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.85 Safari/537.36";
+
+        public static string GetAPILink() {
+            return "https://api.github.com/repos/" + AUTHOR + "/" + REPO + "/releases/latest";
+        }
+
+        public static string GetFlashVersion() {
+            return FLASH_VERSION;
+        }
+
+        public static string GetCurrentVersion() {
+            return VERSION;
+        }
+
+        private static Version GetLatestVersionUnsafe() {
+            using (WebClient client = new WebClient()) {
+                client.Headers.Add("user-agent", USER_AGENT);
+
+                string release = client.DownloadString(GetAPILink());
+                XmlDictionaryReader jsonReader = JsonReaderWriterFactory.CreateJsonReader(Encoding.UTF8.GetBytes(release), new XmlDictionaryReaderQuotas());
+                XElement root = XElement.Load(jsonReader);
+
+                string name = root.Descendants("name").FirstOrDefault().Value;
+                string tag = root.Descendants("tag_name").FirstOrDefault().Value;
+                string url = root.Descendants("html_url").FirstOrDefault().Value;
+
+                if (!url.StartsWith("https://")) {
+                    // This is a suspicious URL... We shouldn't trust it.
+                    return null;
+                }
+
+                return new Version(name, tag, url);
+            }
+        }
+
+        public static Version GetLatestVersion() {
+            try {
+                return GetLatestVersionUnsafe();
+            } catch (Exception e) {
+                Console.WriteLine(e);
+                return null;
+            }
+        }
+    }
+}