new system information provider

app/providers/ProtocolProvider/ProtocolProvider.tsx

@@ -4,8 +4,8 @@ import { usePublicKey } from "../AccountProvider/usePublicKey";
 import { usePrivateKeyHash } from "../AccountProvider/usePrivateKeyHash";
 import { useLogger } from "@/app/hooks/useLogger";
 import { useMemory } from "../MemoryProvider/useMemory";
-import { useDeviceId } from "../DeviceProvider/useDeviceId";
 import { useNavigate } from "react-router-dom";
+import { useSystemInformation } from "../SystemProvider/useSystemInformation";
 
 export enum ProtocolState {
     CONNECTED,
@@ -27,21 +27,22 @@ export function ProtocolProvider(props : ProtocolProviderProps) {
     const privateKey = usePrivateKeyHash();
     const protocol = useMemo(() => {
         return new Protocol(props.serverAddress)
-    }, [props.serverAddress, publicKey, privateKey]);
+    }, [props.serverAddress]);
     const log = useLogger('ProtocolProvider');
     const [connect, setConnect] = useState(ProtocolState.DISCONNECTED);
     const [_, setOnlineSubscribes] = useMemory<string[]>("online_subscribes", [], true);
-    const deviceId = useDeviceId();
+    const systemInfo = useSystemInformation();
     const navigate = useNavigate();
     
     useEffect(() => {
         if(publicKey.trim() == ""
-            || privateKey.trim() == "" || deviceId == "") {
+            || privateKey.trim() == "" || systemInfo.id == "") {
             return;
         }
         const device = {
-            deviceId: deviceId,
-            deviceName: window.deviceName || "Unknown Device"
+            deviceId: systemInfo.id,
+            deviceName: systemInfo.name,
+            deviceOs: systemInfo.os
         }
         protocol.startHandshakeExchange(publicKey, privateKey, device);
         protocol.on('connect', () => {
@@ -69,7 +70,7 @@ export function ProtocolProvider(props : ProtocolProviderProps) {
             setConnect(ProtocolState.DEVICE_VERIFICATION_REQUIRED);
             navigate('/deviceconfirm');
         });
-    }, [publicKey, privateKey, deviceId]);
+    }, [publicKey, privateKey, systemInfo.id]);
 
     return (
         <ProtocolContext.Provider value={[protocol, connect]}>

app/providers/SystemProvider/SystemProvider.tsx

@@ -0,0 +1,91 @@
+import { decodeWithPassword, encodeWithPassword } from "@/app/crypto/crypto";
+import { useFileStorage } from "@/app/hooks/useFileStorage";
+import { generateRandomKey } from "@/app/utils/utils";
+import { createContext, useEffect, useState } from "react";
+
+interface SystemProviderContextValue {
+    id: string;
+    name: string;
+    os: string;
+}
+
+export const SystemProviderContext = createContext<SystemProviderContextValue|null>(null);
+
+export interface SystemProviderProps {
+    children?: React.ReactNode;
+}
+
+/**
+ * Предоставляет информацию о системе и обезличенный
+ * идентификатор устройства.
+ */
+export function SystemProvider(props: SystemProviderProps) {
+    const [deviceId, setDeviceId] = useState<string>("");
+    const {writeFile, readFile} = useFileStorage();
+
+    useEffect(() => {
+        fetchDeviceId();
+    }, []);
+
+    const fetchDeviceId = async () => {
+        const device = await readFile("device");
+        if(device){
+            const decoded = await decodeDevice(Buffer.from(device).toString('utf-8'));
+            if(decoded){
+                setDeviceId(decoded);
+                return;
+            }
+        }
+        await createDeviceId();
+    }
+
+    const createDeviceId = async () => {
+        const newDevice = generateRandomKey(128);
+        const encoded = await encodeDevice(newDevice);
+        await writeFile("device", encoded);
+        setDeviceId(newDevice);
+    }
+    
+    const decodeDevice = async (data: string) => {
+        const hwid = window.deviceId;
+        const platform = window.deviceName;
+        const salt = "rosetta-device-salt";
+
+        try {
+            const decoded = await decodeWithPassword(hwid + platform + salt, data);
+            return decoded;
+        } catch (e) {
+            console.error("Failed to decode device data:", e);
+            return null;
+        }
+    }
+
+    const encodeDevice = async (data: string) => {
+        const hwid = window.deviceId;
+        const platform = window.deviceName;
+        const salt = "rosetta-device-salt";
+
+        try {
+            const encoded = await encodeWithPassword(hwid + platform + salt, data);
+            return encoded;
+        } catch (e) {
+            console.error("Failed to encode device data:", e);
+            return null;
+        }
+    }    
+    
+    const systemName = window.deviceName || "Unknown Device";
+    const systemOs = window.platform || "Unknown OS";
+
+
+
+    return (
+        <SystemProviderContext.Provider value={{
+            id: deviceId,
+            name: systemName,
+            os: systemOs
+        }}>
+            {props.children}
+        </SystemProviderContext.Provider>
+    );
+}