feat: Functions required for metadata handling

.gitignore

@@ -47,3 +47,4 @@ buck-out/
 
 #rust
 rust/signer/target
+rust/qr-fountain-gen/target

README.md

@@ -52,7 +52,7 @@ After update the rust code, you need to change the following files for updating
 - ios/signer.h
 - ios/SubstrateSign.m
 - ios/SubstrateSign.swift
-- android/src/main/java/com/reactlibrary/SubstrateSignModule.java
+- android/src/main/java/io/parity/substrateSign/SubstrateSignModule.java
 - index.js
 - index.d.ts
 

android/src/main/java/io/parity/substrateSign/SubstrateSignModule.java

@@ -237,6 +237,16 @@ public void substrateSecret(String suri, Promise promise) {
         }
     }
 
+    @ReactMethod
+    public void tryDecodeQrSequence(int size, int chunkSize, String data, Promise promise) {
+        try {
+            String decoded = qrparserTryDecodeQrSequence(size, chunkSize, data);
+            promise.resolve(decoded);
+        } catch (Exception e) {
+            rejectWithException(promise, "try to decode qr goblet", e);
+        }
+    }
+
     private static native String ethkeyBrainwalletAddress(String seed);
     private static native String ethkeyBrainwalletBIP39Address(String seed);
     private static native String ethkeyBrainwalletSign(String seed, String message);
@@ -261,4 +271,5 @@ public void substrateSecret(String suri, Promise promise) {
     private static native String ethkeyBrainWalletAddressWithRef(long seedRef);
     private static native String ethkeySubstrateMiniSecretKey(String suri);
     private static native String ethkeySubstrateMiniSecretKeyWithRef(long seedRef, String suriSuffix);
+    private static native String qrparserTryDecodeQrSequence(int size, int chunkSize, String data);
 }

index.d.ts

@@ -47,4 +47,6 @@ declare module 'react-native-substrate-sign' {
 	export function substrateSecret(suri: string): Promise<string>;
 
 	export function substrateSecretWithRef(dataRef: number, suriSuffix: string): Promise<string>;
+
+	export function tryDecodeQrSequence(size: number, chunk_size: number, data: string): Promise<string>;
 }

ios/SubstrateSign.m

@@ -37,4 +37,5 @@ + (BOOL)requiresMainQueueSetup
 RCT_EXTERN_METHOD(brainWalletAddressWithRef:(int64_t)seedRef resolve:(RCTPromiseResolveBlock)resolve reject:(RCTPromiseRejectBlock)reject)
 RCT_EXTERN_METHOD(substrateSecret:(NSString*)suri resolve:(RCTPromiseResolveBlock)resolve reject:(RCTPromiseRejectBlock)reject)
 RCT_EXTERN_METHOD(substrateSecretWithRef:(int64_t*)seedRef suri_suffix:(NSString*)suri_suffix resolve:(RCTPromiseResolveBlock)resolve reject:(RCTPromiseRejectBlock)reject)
+RCT_EXTERN_METHOD(tryDecodeQrSequence:(NSInteger*)size chunk_size:(NSInteger*)chunk_size data:(NSString*)data resolve:(RCTPromiseResolveBlock)resolve reject:(RCTPromiseRejectBlock)reject)
 @end

ios/SubstrateSign.swift

@@ -293,3 +293,17 @@ class SubstrateSign: NSObject {
   }
 }
 
+  @objc func tryDecodeQrSequence(_ size: NSInteger, chunk_size: NSInteger, data: String, resolve: RCTPromiseResolveBlock, reject: RCTPromiseRejectBlock) -> Void {
+    handle_error(
+      resolve: resolve,
+      reject: reject,
+      get_result: { try_decode_qr_sequence($0, Int32(size), Int32(chunk_size), data) },
+      success: { (res: Optional<UnsafePointer<CChar>>) -> String in
+        let val = String(cString: res!)
+        signer_destroy_string(res!)
+        return val
+    })
+  }
+}
+
+

ios/signer.h

@@ -83,3 +83,7 @@ const char* brain_wallet_address_with_ref(struct ExternError*, int64_t seed_ref)
 const char* substrate_mini_secret_key_with_ref(struct ExternError*, int64_t seed_ref, const char* suri_suffix);
 
 const char* substrate_mini_secret_key(struct ExternError*, const char* suri);
+
+// qr fountain decoder
+const char * try_decode_qr_sequence(struct ExternError*, int size, int chunk_size, const char* data_json);
+

rust/qr-fountain-gen/Cargo.toml

@@ -0,0 +1,13 @@
+[package]
+name = "qr-fountain-gen"
+version = "0.1.0"
+authors = ["Slesarev <[email protected]>"]
+edition = "2018"
+
+[dependencies]
+raptorq = "1.6.3"
+qrcodegen = "1.6.0"
+apng-encoder = "0.3.0"
+hex = "0.4.3"
+num-integer = "0.1.41"
+