implement v2 factory reset (#51)

implement v2 factory reset

Author: bitgamma

android/build.gradle

@@ -46,5 +46,5 @@ dependencies {
     implementation 'com.facebook.react:react-native:+'
     implementation 'org.bouncycastle:bcprov-jdk15on:1.60'
     implementation 'org.apache.commons:commons-lang3:3.9'
-    implementation 'com.github.status-im.status-keycard-java:android:3.1.1'
+    implementation 'com.github.status-im.status-keycard-java:android:3.1.2'
 }

android/src/main/java/im/status/ethereum/keycard/SmartCard.java

@@ -275,7 +275,17 @@ public WritableMap getApplicationInfo() throws IOException, APDUException {
         return cardInfo;
     }
 
-    public WritableMap factoryReset() throws IOException, APDUException {
+    public WritableMap factoryResetPost() throws IOException, APDUException {
+        ApplicationInfo info = new ApplicationInfo(new KeycardCommandSet(this.cardChannel).select().checkOK().getData());
+        Log.i(TAG, "Selecting the factory reset Keycard applet succeeded");
+
+        WritableMap cardInfo = Arguments.createMap();
+        cardInfo.putBoolean("initialized?", info.isInitializedCard());
+
+        return cardInfo; 
+    }
+
+    public WritableMap factoryResetFallback() throws IOException, APDUException {
         GlobalPlatformCommandSet cmdSet = new GlobalPlatformCommandSet(this.cardChannel);
         cmdSet.select().checkOK();
         Log.i(TAG, "ISD selected");
@@ -287,15 +297,30 @@ public WritableMap factoryReset() throws IOException, APDUException {
         Log.i(TAG, "Keycard applet instance deleted");
 
         cmdSet.installKeycardApplet().checkOK();
-        Log.i(TAG, "Keycard applet instance re-installed");
+        Log.i(TAG, "Keycard applet instance re-installed");  
 
-        ApplicationInfo info = new ApplicationInfo(new KeycardCommandSet(this.cardChannel).select().checkOK().getData());
-        Log.i(TAG, "Selecting the newly installed Keycard applet succeeded");
+        return factoryResetPost();     
+    }
 
-        WritableMap cardInfo = Arguments.createMap();
-        cardInfo.putBoolean("initialized?", info.isInitializedCard());
+    public WritableMap factoryReset() throws IOException, APDUException {
+        KeycardCommandSet cmdSet = new KeycardCommandSet(this.cardChannel);
+        APDUResponse resp = cmdSet.select();
 
-        return cardInfo;
+        if (!resp.isOK()) {
+            return factoryResetFallback();
+        }
+
+        ApplicationInfo info = new ApplicationInfo(resp.getData());
+        
+        if (!info.hasFactoryResetCapability()) {
+            return factoryResetFallback();
+        }
+
+        if (!cmdSet.factoryReset().isOK()) {
+            return factoryResetFallback();
+        }
+
+        return factoryResetPost();
     }
 
     public void deriveKey(final String path, final String pin) throws IOException, APDUException {

ios/SmartCard.swift

@@ -89,7 +89,17 @@ class SmartCard {
       resolve(true)
     }
 
-    func factoryReset(channel: CardChannel, resolve: RCTPromiseResolveBlock, reject: RCTPromiseRejectBlock) throws -> Void {
+    func factoryResetPost(channel: CardChannel, resolve: RCTPromiseResolveBlock, reject: RCTPromiseRejectBlock) throws -> Void {
+      let info = try ApplicationInfo(KeycardCommandSet(cardChannel: channel).select().checkOK().data)
+      os_log("Selecting the factory reset Keycard applet succeeded")
+
+      var cardInfo = [String: Any]()
+      cardInfo["initialized?"] = info.initializedCard
+
+      resolve(cardInfo)
+    }
+
+    func factoryResetFallback(channel: CardChannel, resolve: RCTPromiseResolveBlock, reject: RCTPromiseRejectBlock) throws -> Void {
       let cmdSet: GlobalPlatformCommandSet = GlobalPlatformCommandSet(cardChannel: channel);
       try cmdSet.select().checkOK()
       os_log("ISD selected")
@@ -103,13 +113,32 @@ class SmartCard {
       try cmdSet.installKeycardInstance().checkOK()
       os_log("Keycard applet instance re-installed")
 
-      let info = try ApplicationInfo(KeycardCommandSet(cardChannel: channel).select().checkOK().data)
-      os_log("Selecting the newly installed Keycard applet succeeded")
+      factoryResetPost(channel, resolve, reject)
+    }
 
-      var cardInfo = [String: Any]()
-      cardInfo["initialized?"] = info.initializedCard
+    func factoryReset(channel: CardChannel, resolve: RCTPromiseResolveBlock, reject: RCTPromiseRejectBlock) throws -> Void {
+      let cmdSet = KeycardCommandSet(cardChannel: channel)
+      var resp = try cmdSet.select()
+      
+      if (resp.sw != 0x9000) {
+        factoryResetFallback(channel, resolve, reject)
+        return
+      }
 
-      resolve(cardInfo)
+      let info = try ApplicationInfo(resp.data)
+      if (!info.hasFactoryResetCapability) {
+        factoryResetFallback(channel, resolve, reject)
+        return
+      }
+
+      resp = try cmdSet.factoryReset()
+
+      if (resp.sw != 0x9000) {
+        factoryResetFallback(channel, resolve, reject)
+        return
+      }
+
+      factoryResetPost(channel, resolve, reject)
     }
 
     func getApplicationInfo(channel: CardChannel, resolve: RCTPromiseResolveBlock, reject: RCTPromiseRejectBlock) throws -> Void {

package.json

@@ -1,7 +1,7 @@
 {
   "name": "react-native-status-keycard",
   "homepage": "https://keycard.status.im/",
-  "version": "2.5.39",
+  "version": "2.5.40",
   "description": "React Native library to interact with Status Keycard using NFC connection",
   "main": "index.js",
   "scripts": {