1235 lines
43 KiB
Rust
1235 lines
43 KiB
Rust
#[macro_use]
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extern crate log;
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use std::convert::{TryFrom, TryInto};
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use std::panic;
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use std::path::Path;
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use std::ptr;
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use std::str::FromStr;
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use android_logger::Config;
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use failure::format_err;
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use hdwallet::traits::{Deserialize, Serialize};
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use jni::{
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objects::{JClass, JString},
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sys::{jboolean, jbyteArray, jint, jlong, jobjectArray, jstring, JNI_FALSE, JNI_TRUE},
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JNIEnv,
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};
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use log::Level;
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use secp256k1::PublicKey;
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use zcash_client_backend::keys::UnifiedSpendingKey;
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use zcash_client_backend::{
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address::RecipientAddress,
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data_api::{
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chain::{scan_cached_blocks, validate_chain},
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error::Error,
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wallet::{
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create_spend_to_address, decrypt_and_store_transaction, shield_transparent_funds,
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},
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WalletRead, WalletReadTransparent, WalletWrite, WalletWriteTransparent,
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},
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encoding::{
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decode_extended_spending_key, encode_extended_full_viewing_key,
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encode_extended_spending_key, encode_payment_address, AddressCodec,
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},
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keys::{sapling, UnifiedFullViewingKey},
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wallet::{OvkPolicy, WalletTransparentOutput},
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};
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#[allow(deprecated)]
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use zcash_client_sqlite::wallet::{delete_utxos_above, get_rewind_height};
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use zcash_client_sqlite::{
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error::SqliteClientError,
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wallet::init::{init_accounts_table, init_blocks_table, init_wallet_db},
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BlockDb, NoteId, WalletDb,
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};
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use zcash_primitives::consensus::Network::{MainNetwork, TestNetwork};
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#[allow(deprecated)]
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use zcash_primitives::legacy::keys::{pubkey_to_address, AccountPrivKey};
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use zcash_primitives::{
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block::BlockHash,
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consensus::{BlockHeight, BranchId, Network, Parameters},
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legacy::{Script, TransparentAddress},
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memo::{Memo, MemoBytes},
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transaction::{
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components::{Amount, OutPoint, TxOut},
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Transaction,
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},
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zip32::{AccountId, DiversifierIndex, ExtendedFullViewingKey},
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};
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use zcash_proofs::prover::LocalTxProver;
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use crate::utils::exception::unwrap_exc_or;
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mod utils;
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const ANCHOR_OFFSET: u32 = 10;
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#[cfg(debug_assertions)]
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fn print_debug_state() {
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debug!("WARNING! Debugging enabled! This will likely slow things down 10X!");
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}
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#[cfg(not(debug_assertions))]
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fn print_debug_state() {
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debug!("Release enabled (congrats, this is NOT a debug build).");
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}
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fn wallet_db<P: Parameters>(
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env: &JNIEnv<'_>,
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params: P,
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db_data: JString<'_>,
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) -> Result<WalletDb<P>, failure::Error> {
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WalletDb::for_path(utils::java_string_to_rust(&env, db_data), params)
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.map_err(|e| format_err!("Error opening wallet database connection: {}", e))
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}
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fn block_db(env: &JNIEnv<'_>, db_data: JString<'_>) -> Result<BlockDb, failure::Error> {
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BlockDb::for_path(utils::java_string_to_rust(&env, db_data))
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.map_err(|e| format_err!("Error opening block source database connection: {}", e))
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}
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#[no_mangle]
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pub unsafe extern "C" fn Java_cash_z_ecc_android_sdk_jni_RustBackend_initLogs(
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_env: JNIEnv<'_>,
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_: JClass<'_>,
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) {
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android_logger::init_once(
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Config::default()
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.with_min_level(Level::Debug)
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.with_tag("cash.z.rust.logs"),
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);
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log_panics::init();
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debug!("logs have been initialized successfully");
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print_debug_state()
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}
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#[no_mangle]
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pub unsafe extern "C" fn Java_cash_z_ecc_android_sdk_jni_RustBackend_initDataDb(
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env: JNIEnv<'_>,
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_: JClass<'_>,
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db_data: JString<'_>,
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network_id: jint,
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) -> jboolean {
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let res = panic::catch_unwind(|| {
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let network = parse_network(network_id as u32)?;
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let db_path = utils::java_string_to_rust(&env, db_data);
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WalletDb::for_path(db_path, network)
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.and_then(|db| init_wallet_db(&db))
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.map(|()| JNI_TRUE)
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.map_err(|e| format_err!("Error while initializing data DB: {}", e))
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});
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unwrap_exc_or(&env, res, JNI_FALSE)
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}
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#[no_mangle]
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pub unsafe extern "C" fn Java_cash_z_ecc_android_sdk_jni_RustBackend_initAccountsTableWithKeys(
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env: JNIEnv<'_>,
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_: JClass<'_>,
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db_data: JString<'_>,
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ufvks_arr: jobjectArray,
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network_id: jint,
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) -> jboolean {
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let res = panic::catch_unwind(|| {
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let network = parse_network(network_id as u32)?;
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let db_data = wallet_db(&env, network, db_data)?;
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// TODO: avoid all this unwrapping and also surface errors, better
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let count = env.get_array_length(ufvks_arr).unwrap();
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let ufvks = (0..count)
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.map(|i| env.get_object_array_element(ufvks_arr, i))
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.map(|jstr| utils::java_string_to_rust(&env, jstr.unwrap().into()))
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.map(|ufvkstr| {
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UnifiedFullViewingKey::decode(&network, &ufvkstr).map_err(|e| {
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if e.starts_with("UFVK is for network") {
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let (network_name, other) = if network == TestNetwork {
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("testnet", "mainnet")
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} else {
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("mainnet", "testnet")
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};
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format_err!("Error: Wrong network! Unable to decode viewing key for {}. Check whether this is a key for {}.", network_name, other)
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} else {
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format_err!("Invalid Unified Full Viewing Key: {}", e)
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}
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})
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})
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.collect::<Result<Vec<_>, _>>()?;
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match init_accounts_table(&db_data, &ufvks[..]) {
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Ok(()) => Ok(JNI_TRUE),
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Err(e) => Err(format_err!("Error while initializing accounts: {}", e)),
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}
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});
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unwrap_exc_or(&env, res, JNI_FALSE)
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}
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#[no_mangle]
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pub unsafe extern "C" fn Java_cash_z_ecc_android_sdk_tool_DerivationTool_deriveExtendedSpendingKeys(
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env: JNIEnv<'_>,
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_: JClass<'_>,
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seed: jbyteArray,
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accounts: jint,
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network_id: jint,
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) -> jobjectArray {
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let res = panic::catch_unwind(|| {
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let network = parse_network(network_id as u32)?;
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let seed = env.convert_byte_array(seed).unwrap();
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let accounts = if accounts > 0 {
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accounts as u32
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} else {
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return Err(format_err!("accounts argument must be greater than zero"));
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};
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let extsks: Vec<_> = (0..accounts)
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.map(|account| {
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sapling::spending_key(&seed, network.coin_type(), AccountId::from(account))
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})
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.collect();
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Ok(utils::rust_vec_to_java(
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&env,
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extsks,
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"java/lang/String",
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|env, extsk| {
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env.new_string(encode_extended_spending_key(
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network.hrp_sapling_extended_spending_key(),
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&extsk,
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))
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},
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|env| env.new_string(""),
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))
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});
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unwrap_exc_or(&env, res, ptr::null_mut())
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}
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#[no_mangle]
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pub unsafe extern "C" fn Java_cash_z_ecc_android_sdk_tool_DerivationTool_deriveUnifiedFullViewingKeysFromSeed(
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env: JNIEnv<'_>,
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_: JClass<'_>,
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seed: jbyteArray,
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accounts: jint,
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network_id: jint,
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) -> jobjectArray {
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let res = panic::catch_unwind(|| {
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let network = parse_network(network_id as u32)?;
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let seed = env.convert_byte_array(seed).unwrap();
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let accounts = if accounts > 0 {
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accounts as u32
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} else {
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return Err(format_err!("accounts argument must be greater than zero"));
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};
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let ufvks: Vec<_> = (0..accounts)
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.map(|account| {
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let account_id = AccountId::from(account);
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UnifiedSpendingKey::from_seed(&network, &seed, account_id)
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.map_err(|e| {
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format_err!("error generating unified spending key from seed: {:?}", e)
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})
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.map(|usk| usk.to_unified_full_viewing_key().encode(&network))
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})
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.collect::<Result<_, _>>()?;
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Ok(utils::rust_vec_to_java(
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&env,
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ufvks,
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"java/lang/String",
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|env, ufvk| env.new_string(ufvk),
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|env| env.new_string(""),
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))
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});
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unwrap_exc_or(&env, res, ptr::null_mut())
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}
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#[no_mangle]
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pub unsafe extern "C" fn Java_cash_z_ecc_android_sdk_tool_DerivationTool_deriveUnifiedAddressFromSeed(
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env: JNIEnv<'_>,
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_: JClass<'_>,
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seed: jbyteArray,
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account_index: jint,
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network_id: jint,
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) -> jstring {
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let res = panic::catch_unwind(|| {
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let network = parse_network(network_id as u32)?;
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let seed = env.convert_byte_array(seed).unwrap();
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let account_index = if account_index >= 0 {
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account_index as u32
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} else {
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return Err(format_err!("accountIndex argument must be positive"));
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};
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let account_id = AccountId::from(account_index);
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let ufvk = UnifiedSpendingKey::from_seed(&network, &seed, account_id)
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.map_err(|e| format_err!("error generating unified spending key from seed: {:?}", e))
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.map(|usk| usk.to_unified_full_viewing_key())?;
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let (ua, _) = ufvk
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.find_address(DiversifierIndex::new())
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.expect("At least one Unified Address should be derivable");
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let address_str = ua.encode(&network);
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let output = env
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.new_string(address_str)
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.expect("Couldn't create Java string!");
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Ok(output.into_inner())
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});
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unwrap_exc_or(&env, res, ptr::null_mut())
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}
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#[no_mangle]
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pub unsafe extern "C" fn Java_cash_z_ecc_android_sdk_tool_DerivationTool_deriveUnifiedAddressFromViewingKey(
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env: JNIEnv<'_>,
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_: JClass<'_>,
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ufvk_string: JString<'_>,
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network_id: jint,
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) -> jstring {
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let res = panic::catch_unwind(|| {
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let network = parse_network(network_id as u32)?;
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let ufvk_string = utils::java_string_to_rust(&env, ufvk_string);
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let ufvk = match UnifiedFullViewingKey::decode(&network, &ufvk_string) {
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Ok(ufvk) => ufvk,
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Err(e) => {
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return Err(format_err!(
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"Error while deriving viewing key from string input: {}",
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e,
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));
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}
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};
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// Derive the default Unified Address (containing the default Sapling payment
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// address that older SDKs used).
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let (ua, _) = ufvk.default_address();
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let address_str = ua.encode(&network);
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let output = env
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.new_string(address_str)
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.expect("Couldn't create Java string!");
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Ok(output.into_inner())
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});
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unwrap_exc_or(&env, res, ptr::null_mut())
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}
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#[no_mangle]
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pub unsafe extern "C" fn Java_cash_z_ecc_android_sdk_tool_DerivationTool_deriveExtendedFullViewingKey(
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env: JNIEnv<'_>,
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_: JClass<'_>,
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extsk_string: JString<'_>,
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network_id: jint,
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) -> jobjectArray {
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let res = panic::catch_unwind(|| {
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let network = parse_network(network_id as u32)?;
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let extsk_string = utils::java_string_to_rust(&env, extsk_string);
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let extfvk = match decode_extended_spending_key(
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network.hrp_sapling_extended_spending_key(),
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&extsk_string,
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) {
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Ok(Some(extsk)) => ExtendedFullViewingKey::from(&extsk),
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Ok(None) => {
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return Err(format_err!("Deriving viewing key from spending key returned no results. Encoding was valid but type was incorrect."));
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}
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Err(e) => {
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return Err(format_err!(
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"Error while deriving viewing key from spending key: {}",
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e
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));
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}
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};
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let output = env
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.new_string(encode_extended_full_viewing_key(
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network.hrp_sapling_extended_full_viewing_key(),
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&extfvk,
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))
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.expect("Couldn't create Java string!");
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Ok(output.into_inner())
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});
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unwrap_exc_or(&env, res, ptr::null_mut())
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}
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#[no_mangle]
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pub unsafe extern "C" fn Java_cash_z_ecc_android_sdk_jni_RustBackend_initBlocksTable(
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env: JNIEnv<'_>,
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_: JClass<'_>,
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db_data: JString<'_>,
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height: jlong,
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hash_string: JString<'_>,
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time: jlong,
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sapling_tree_string: JString<'_>,
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network_id: jint,
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) -> jboolean {
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let res = panic::catch_unwind(|| {
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let network = parse_network(network_id as u32)?;
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let db_data = wallet_db(&env, network, db_data)?;
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let hash = {
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let mut hash = hex::decode(utils::java_string_to_rust(&env, hash_string)).unwrap();
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hash.reverse();
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BlockHash::from_slice(&hash)
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};
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let time = if time >= 0 && time <= jlong::from(u32::max_value()) {
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time as u32
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} else {
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return Err(format_err!("time argument must fit in a u32"));
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};
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let sapling_tree =
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hex::decode(utils::java_string_to_rust(&env, sapling_tree_string)).unwrap();
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debug!("initializing blocks table with height {}", height);
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match init_blocks_table(&db_data, (height as u32).try_into()?, hash, time, &sapling_tree) {
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Ok(()) => Ok(JNI_TRUE),
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Err(e) => Err(format_err!("Error while initializing blocks table: {}", e)),
|
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}
|
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});
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unwrap_exc_or(&env, res, JNI_FALSE)
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}
|
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|
|
#[no_mangle]
|
|
pub unsafe extern "C" fn Java_cash_z_ecc_android_sdk_jni_RustBackend_getShieldedAddress(
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env: JNIEnv<'_>,
|
|
_: JClass<'_>,
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|
db_data: JString<'_>,
|
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account: jint,
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network_id: jint,
|
|
) -> jstring {
|
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let res = panic::catch_unwind(|| {
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let network = parse_network(network_id as u32)?;
|
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let db_data = wallet_db(&env, network, db_data)?;
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let account = AccountId::from(u32::try_from(account)?);
|
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|
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match (&db_data).get_address(account) {
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Ok(Some(addr)) => {
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let addr_str = encode_payment_address(network.hrp_sapling_payment_address(), &addr);
|
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let output = env
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.new_string(addr_str)
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.expect("Couldn't create Java string!");
|
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Ok(output.into_inner())
|
|
}
|
|
Ok(None) => Err(format_err!(
|
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"No payment address was available for account {:?}",
|
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account
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)),
|
|
Err(e) => Err(format_err!("Error while fetching address: {}", e)),
|
|
}
|
|
});
|
|
|
|
unwrap_exc_or(&env, res, ptr::null_mut())
|
|
}
|
|
|
|
#[no_mangle]
|
|
pub unsafe extern "C" fn Java_cash_z_ecc_android_sdk_jni_RustBackend_isValidShieldedAddress(
|
|
env: JNIEnv<'_>,
|
|
_: JClass<'_>,
|
|
addr: JString<'_>,
|
|
network_id: jint,
|
|
) -> jboolean {
|
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let res = panic::catch_unwind(|| {
|
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let network = parse_network(network_id as u32)?;
|
|
let addr = utils::java_string_to_rust(&env, addr);
|
|
|
|
match RecipientAddress::decode(&network, &addr) {
|
|
Some(addr) => match addr {
|
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RecipientAddress::Shielded(_) => Ok(JNI_TRUE),
|
|
RecipientAddress::Transparent(_) | RecipientAddress::Unified(_) => Ok(JNI_FALSE),
|
|
},
|
|
None => Err(format_err!("Address is for the wrong network")),
|
|
}
|
|
});
|
|
unwrap_exc_or(&env, res, JNI_FALSE)
|
|
}
|
|
|
|
#[no_mangle]
|
|
pub unsafe extern "C" fn Java_cash_z_ecc_android_sdk_jni_RustBackend_isValidTransparentAddress(
|
|
env: JNIEnv<'_>,
|
|
_: JClass<'_>,
|
|
addr: JString<'_>,
|
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network_id: jint,
|
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) -> jboolean {
|
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let res = panic::catch_unwind(|| {
|
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let network = parse_network(network_id as u32)?;
|
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let addr = utils::java_string_to_rust(&env, addr);
|
|
|
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match RecipientAddress::decode(&network, &addr) {
|
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Some(addr) => match addr {
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|
RecipientAddress::Shielded(_) | RecipientAddress::Unified(_) => Ok(JNI_FALSE),
|
|
RecipientAddress::Transparent(_) => Ok(JNI_TRUE),
|
|
},
|
|
None => Err(format_err!("Address is for the wrong network")),
|
|
}
|
|
});
|
|
unwrap_exc_or(&env, res, JNI_FALSE)
|
|
}
|
|
|
|
#[no_mangle]
|
|
pub unsafe extern "C" fn Java_cash_z_ecc_android_sdk_jni_RustBackend_isValidUnifiedAddress(
|
|
env: JNIEnv<'_>,
|
|
_: JClass<'_>,
|
|
addr: JString<'_>,
|
|
network_id: jint,
|
|
) -> jboolean {
|
|
let res = panic::catch_unwind(|| {
|
|
let network = parse_network(network_id as u32)?;
|
|
let addr = utils::java_string_to_rust(&env, addr);
|
|
|
|
match RecipientAddress::decode(&network, &addr) {
|
|
Some(addr) => match addr {
|
|
RecipientAddress::Unified(_) => Ok(JNI_TRUE),
|
|
RecipientAddress::Shielded(_) | RecipientAddress::Transparent(_) => Ok(JNI_FALSE),
|
|
},
|
|
None => Err(format_err!("Address is for the wrong network")),
|
|
}
|
|
});
|
|
unwrap_exc_or(&env, res, JNI_FALSE)
|
|
}
|
|
|
|
#[no_mangle]
|
|
pub unsafe extern "C" fn Java_cash_z_ecc_android_sdk_jni_RustBackend_getBalance(
|
|
env: JNIEnv<'_>,
|
|
_: JClass<'_>,
|
|
db_data: JString<'_>,
|
|
accountj: jint,
|
|
network_id: jint,
|
|
) -> jlong {
|
|
let res = panic::catch_unwind(|| {
|
|
let network = parse_network(network_id as u32)?;
|
|
let db_data = wallet_db(&env, network, db_data)?;
|
|
let account = AccountId::from(u32::try_from(accountj)?);
|
|
|
|
(&db_data)
|
|
.get_target_and_anchor_heights(ANCHOR_OFFSET)
|
|
.map_err(|e| format_err!("Error while fetching anchor height: {}", e))
|
|
.and_then(|opt_anchor| {
|
|
opt_anchor
|
|
.map(|(h, _)| h)
|
|
.ok_or(format_err!("height not available; scan required."))
|
|
})
|
|
.and_then(|anchor| {
|
|
(&db_data)
|
|
.get_balance_at(account, anchor)
|
|
.map_err(|e| format_err!("Error while fetching verified balance: {}", e))
|
|
})
|
|
.map(|amount| amount.into())
|
|
});
|
|
unwrap_exc_or(&env, res, -1)
|
|
}
|
|
|
|
#[no_mangle]
|
|
pub unsafe extern "C" fn Java_cash_z_ecc_android_sdk_jni_RustBackend_getVerifiedTransparentBalance(
|
|
env: JNIEnv<'_>,
|
|
_: JClass<'_>,
|
|
db_data: JString<'_>,
|
|
address: JString<'_>,
|
|
network_id: jint,
|
|
) -> jlong {
|
|
let res = panic::catch_unwind(|| {
|
|
let network = parse_network(network_id as u32)?;
|
|
let db_data = wallet_db(&env, network, db_data)?;
|
|
let addr = utils::java_string_to_rust(&env, address);
|
|
let taddr = TransparentAddress::decode(&network, &addr).unwrap();
|
|
|
|
let amount = (&db_data)
|
|
.get_target_and_anchor_heights(ANCHOR_OFFSET)
|
|
.map_err(|e| format_err!("Error while fetching anchor height: {}", e))
|
|
.and_then(|opt_anchor| {
|
|
opt_anchor
|
|
.map(|(h, _)| h)
|
|
.ok_or(format_err!("height not available; scan required."))
|
|
})
|
|
.and_then(|anchor| {
|
|
(&db_data)
|
|
.get_unspent_transparent_outputs(&taddr, anchor - ANCHOR_OFFSET)
|
|
.map_err(|e| format_err!("Error while fetching verified balance: {}", e))
|
|
})?
|
|
.iter()
|
|
.map(|utxo| utxo.txout.value)
|
|
.sum::<Option<Amount>>()
|
|
.ok_or_else(|| format_err!("Balance overflowed MAX_MONEY. Lucky you!"))?;
|
|
|
|
Ok(amount.into())
|
|
});
|
|
|
|
unwrap_exc_or(&env, res, -1)
|
|
}
|
|
|
|
#[no_mangle]
|
|
pub unsafe extern "C" fn Java_cash_z_ecc_android_sdk_jni_RustBackend_getTotalTransparentBalance(
|
|
env: JNIEnv<'_>,
|
|
_: JClass<'_>,
|
|
db_data: JString<'_>,
|
|
address: JString<'_>,
|
|
network_id: jint,
|
|
) -> jlong {
|
|
let res = panic::catch_unwind(|| {
|
|
let network = parse_network(network_id as u32)?;
|
|
let db_data = wallet_db(&env, network, db_data)?;
|
|
let addr = utils::java_string_to_rust(&env, address);
|
|
let taddr = TransparentAddress::decode(&network, &addr).unwrap();
|
|
|
|
let amount = (&db_data)
|
|
.get_target_and_anchor_heights(ANCHOR_OFFSET)
|
|
.map_err(|e| format_err!("Error while fetching anchor height: {}", e))
|
|
.and_then(|opt_anchor| {
|
|
opt_anchor
|
|
.map(|(h, _)| h)
|
|
.ok_or(format_err!("height not available; scan required."))
|
|
})
|
|
.and_then(|anchor| {
|
|
(&db_data)
|
|
.get_unspent_transparent_outputs(&taddr, anchor)
|
|
.map_err(|e| format_err!("Error while fetching verified balance: {}", e))
|
|
})?
|
|
.iter()
|
|
.map(|utxo| utxo.txout.value)
|
|
.sum::<Option<Amount>>()
|
|
.ok_or_else(|| format_err!("Balance overflowed MAX_MONEY. Lucky you!"))?;
|
|
|
|
Ok(amount.into())
|
|
});
|
|
|
|
unwrap_exc_or(&env, res, -1)
|
|
}
|
|
|
|
#[no_mangle]
|
|
pub unsafe extern "C" fn Java_cash_z_ecc_android_sdk_jni_RustBackend_getVerifiedBalance(
|
|
env: JNIEnv<'_>,
|
|
_: JClass<'_>,
|
|
db_data: JString<'_>,
|
|
account: jint,
|
|
network_id: jint,
|
|
) -> jlong {
|
|
let res = panic::catch_unwind(|| {
|
|
let network = parse_network(network_id as u32)?;
|
|
let db_data = wallet_db(&env, network, db_data)?;
|
|
let account = AccountId::from(u32::try_from(account)?);
|
|
|
|
(&db_data)
|
|
.get_target_and_anchor_heights(ANCHOR_OFFSET)
|
|
.map_err(|e| format_err!("Error while fetching anchor height: {}", e))
|
|
.and_then(|opt_anchor| {
|
|
opt_anchor
|
|
.map(|(_, a)| a)
|
|
.ok_or(format_err!("Anchor height not available; scan required."))
|
|
})
|
|
.and_then(|anchor| {
|
|
(&db_data)
|
|
.get_balance_at(account, anchor)
|
|
.map_err(|e| format_err!("Error while fetching verified balance: {}", e))
|
|
})
|
|
.map(|amount| amount.into())
|
|
});
|
|
|
|
unwrap_exc_or(&env, res, -1)
|
|
}
|
|
|
|
#[no_mangle]
|
|
pub unsafe extern "C" fn Java_cash_z_ecc_android_sdk_jni_RustBackend_getReceivedMemoAsUtf8(
|
|
env: JNIEnv<'_>,
|
|
_: JClass<'_>,
|
|
db_data: JString<'_>,
|
|
id_note: jlong,
|
|
network_id: jint,
|
|
) -> jstring {
|
|
let res = panic::catch_unwind(|| {
|
|
let network = parse_network(network_id as u32)?;
|
|
let db_data = wallet_db(&env, network, db_data)?;
|
|
|
|
let memo = (&db_data)
|
|
.get_memo(NoteId::ReceivedNoteId(id_note))
|
|
.map_err(|e| format_err!("An error occurred retrieving the memo, {}", e))
|
|
.and_then(|memo| match memo {
|
|
Memo::Empty => Ok("".to_string()),
|
|
Memo::Text(memo) => Ok(memo.into()),
|
|
_ => Err(format_err!("This memo does not contain UTF-8 text")),
|
|
})?;
|
|
|
|
let output = env.new_string(memo).expect("Couldn't create Java string!");
|
|
Ok(output.into_inner())
|
|
});
|
|
unwrap_exc_or(&env, res, ptr::null_mut())
|
|
}
|
|
|
|
#[no_mangle]
|
|
pub unsafe extern "C" fn Java_cash_z_ecc_android_sdk_jni_RustBackend_getSentMemoAsUtf8(
|
|
env: JNIEnv<'_>,
|
|
_: JClass<'_>,
|
|
db_data: JString<'_>,
|
|
id_note: jlong,
|
|
network_id: jint,
|
|
) -> jstring {
|
|
let res = panic::catch_unwind(|| {
|
|
let network = parse_network(network_id as u32)?;
|
|
let db_data = wallet_db(&env, network, db_data)?;
|
|
|
|
let memo = (&db_data)
|
|
.get_memo(NoteId::SentNoteId(id_note))
|
|
.map_err(|e| format_err!("An error occurred retrieving the memo, {}", e))
|
|
.and_then(|memo| match memo {
|
|
Memo::Empty => Ok("".to_string()),
|
|
Memo::Text(memo) => Ok(memo.into()),
|
|
_ => Err(format_err!("This memo does not contain UTF-8 text")),
|
|
})?;
|
|
|
|
let output = env.new_string(memo).expect("Couldn't create Java string!");
|
|
Ok(output.into_inner())
|
|
});
|
|
|
|
unwrap_exc_or(&env, res, ptr::null_mut())
|
|
}
|
|
|
|
#[no_mangle]
|
|
pub unsafe extern "C" fn Java_cash_z_ecc_android_sdk_jni_RustBackend_validateCombinedChain(
|
|
env: JNIEnv<'_>,
|
|
_: JClass<'_>,
|
|
db_cache: JString<'_>,
|
|
db_data: JString<'_>,
|
|
network_id: jint,
|
|
) -> jlong {
|
|
let res = panic::catch_unwind(|| {
|
|
let network = parse_network(network_id as u32)?;
|
|
let block_db = block_db(&env, db_cache)?;
|
|
let db_data = wallet_db(&env, network, db_data)?;
|
|
|
|
let validate_from = (&db_data)
|
|
.get_max_height_hash()
|
|
.map_err(|e| format_err!("Error while validating chain: {}", e))?;
|
|
|
|
let val_res = validate_chain(&network, &block_db, validate_from);
|
|
|
|
if let Err(e) = val_res {
|
|
match e {
|
|
SqliteClientError::BackendError(Error::InvalidChain(upper_bound, _)) => {
|
|
let upper_bound_u32 = u32::from(upper_bound);
|
|
Ok(upper_bound_u32 as i64)
|
|
}
|
|
_ => Err(format_err!("Error while validating chain: {}", e)),
|
|
}
|
|
} else {
|
|
// All blocks are valid, so "highest invalid block height" is below genesis.
|
|
Ok(-1)
|
|
}
|
|
});
|
|
|
|
unwrap_exc_or(&env, res, 0) as jlong
|
|
}
|
|
|
|
#[no_mangle]
|
|
pub unsafe extern "C" fn Java_cash_z_ecc_android_sdk_jni_RustBackend_getNearestRewindHeight(
|
|
env: JNIEnv<'_>,
|
|
_: JClass<'_>,
|
|
db_data: JString<'_>,
|
|
height: jlong,
|
|
network_id: jint,
|
|
) -> jlong {
|
|
#[allow(deprecated)]
|
|
let res = panic::catch_unwind(|| {
|
|
if height < 100 {
|
|
Ok(height)
|
|
} else {
|
|
let network = parse_network(network_id as u32)?;
|
|
let db_data = wallet_db(&env, network, db_data)?;
|
|
match get_rewind_height(&db_data) {
|
|
Ok(Some(best_height)) => {
|
|
let first_unspent_note_height = u32::from(best_height);
|
|
Ok(std::cmp::min(
|
|
first_unspent_note_height as i64,
|
|
height as i64,
|
|
))
|
|
}
|
|
Ok(None) => Ok(height as i64),
|
|
Err(e) => Err(format_err!(
|
|
"Error while getting nearest rewind height for {}: {}",
|
|
height,
|
|
e
|
|
)),
|
|
}
|
|
}
|
|
});
|
|
|
|
unwrap_exc_or(&env, res, -1) as jlong
|
|
}
|
|
|
|
#[no_mangle]
|
|
pub unsafe extern "C" fn Java_cash_z_ecc_android_sdk_jni_RustBackend_rewindToHeight(
|
|
env: JNIEnv<'_>,
|
|
_: JClass<'_>,
|
|
db_data: JString<'_>,
|
|
height: jlong,
|
|
network_id: jint,
|
|
) -> jboolean {
|
|
let res = panic::catch_unwind(|| {
|
|
let network = parse_network(network_id as u32)?;
|
|
let db_data = wallet_db(&env, network, db_data)?;
|
|
let mut db_data = db_data.get_update_ops()?;
|
|
|
|
let height = BlockHeight::try_from(height)?;
|
|
db_data
|
|
.rewind_to_height(height)
|
|
.map(|_| 1)
|
|
.map_err(|e| format_err!("Error while rewinding data DB to height {}: {}", height, e))
|
|
});
|
|
|
|
unwrap_exc_or(&env, res, JNI_FALSE)
|
|
}
|
|
|
|
#[no_mangle]
|
|
pub unsafe extern "C" fn Java_cash_z_ecc_android_sdk_jni_RustBackend_scanBlocks(
|
|
env: JNIEnv<'_>,
|
|
_: JClass<'_>,
|
|
db_cache: JString<'_>,
|
|
db_data: JString<'_>,
|
|
network_id: jint,
|
|
) -> jboolean {
|
|
let res = panic::catch_unwind(|| {
|
|
let network = parse_network(network_id as u32)?;
|
|
let db_cache = block_db(&env, db_cache)?;
|
|
let db_data = wallet_db(&env, network, db_data)?;
|
|
let mut db_data = db_data.get_update_ops()?;
|
|
|
|
match scan_cached_blocks(&network, &db_cache, &mut db_data, None) {
|
|
Ok(()) => Ok(JNI_TRUE),
|
|
Err(e) => Err(format_err!("Rust error while scanning blocks: {}", e)),
|
|
}
|
|
});
|
|
unwrap_exc_or(&env, res, JNI_FALSE)
|
|
}
|
|
|
|
#[no_mangle]
|
|
pub unsafe extern "C" fn Java_cash_z_ecc_android_sdk_jni_RustBackend_putUtxo(
|
|
env: JNIEnv<'_>,
|
|
_: JClass<'_>,
|
|
db_data: JString<'_>,
|
|
address: JString<'_>,
|
|
txid_bytes: jbyteArray,
|
|
index: jint,
|
|
script: jbyteArray,
|
|
value: jlong,
|
|
height: jint,
|
|
network_id: jint,
|
|
) -> jboolean {
|
|
// debug!("For height {} found consensus branch {:?}", height, branch);
|
|
debug!("preparing to store UTXO in db_data");
|
|
#[allow(deprecated)]
|
|
let res = panic::catch_unwind(|| {
|
|
let network = parse_network(network_id as u32)?;
|
|
let txid_bytes = env.convert_byte_array(txid_bytes).unwrap();
|
|
let mut txid = [0u8; 32];
|
|
txid.copy_from_slice(&txid_bytes);
|
|
|
|
let script_pubkey = Script(env.convert_byte_array(script).unwrap());
|
|
let db_data = wallet_db(&env, network, db_data)?;
|
|
let mut db_data = db_data.get_update_ops()?;
|
|
let addr = utils::java_string_to_rust(&env, address);
|
|
let _address = TransparentAddress::decode(&network, &addr).unwrap();
|
|
|
|
let output = WalletTransparentOutput {
|
|
outpoint: OutPoint::new(txid, index as u32),
|
|
txout: TxOut {
|
|
value: Amount::from_i64(value).unwrap(),
|
|
script_pubkey,
|
|
},
|
|
height: BlockHeight::from(height as u32),
|
|
};
|
|
|
|
debug!("Storing UTXO in db_data");
|
|
match db_data.put_received_transparent_utxo(&output) {
|
|
Ok(_) => Ok(JNI_TRUE),
|
|
Err(e) => Err(format_err!("Error while inserting UTXO: {}", e)),
|
|
}
|
|
});
|
|
unwrap_exc_or(&env, res, JNI_FALSE)
|
|
}
|
|
|
|
#[no_mangle]
|
|
pub unsafe extern "C" fn Java_cash_z_ecc_android_sdk_jni_RustBackend_clearUtxos(
|
|
env: JNIEnv<'_>,
|
|
_: JClass<'_>,
|
|
db_data: JString<'_>,
|
|
taddress: JString<'_>,
|
|
above_height: jlong,
|
|
network_id: jint,
|
|
) -> jint {
|
|
#[allow(deprecated)]
|
|
let res = panic::catch_unwind(|| {
|
|
let network = parse_network(network_id as u32)?;
|
|
let db_data = wallet_db(&env, network, db_data)?;
|
|
let mut db_data = db_data.get_update_ops()?;
|
|
let addr = utils::java_string_to_rust(&env, taddress);
|
|
let taddress = TransparentAddress::decode(&network, &addr).unwrap();
|
|
let height = BlockHeight::from(above_height as u32);
|
|
|
|
debug!(
|
|
"clearing UTXOs that were found above height: {}",
|
|
above_height
|
|
);
|
|
match delete_utxos_above(&mut db_data, &taddress, height) {
|
|
Ok(rows) => Ok(rows as i32),
|
|
Err(e) => Err(format_err!("Error while clearing UTXOs: {}", e)),
|
|
}
|
|
});
|
|
unwrap_exc_or(&env, res, -1)
|
|
}
|
|
|
|
// ADDED BY ANDROID
|
|
#[no_mangle]
|
|
pub unsafe extern "C" fn Java_cash_z_ecc_android_sdk_jni_RustBackend_scanBlockBatch(
|
|
env: JNIEnv<'_>,
|
|
_: JClass<'_>,
|
|
db_cache: JString<'_>,
|
|
db_data: JString<'_>,
|
|
limit: jint,
|
|
network_id: jint,
|
|
) -> jboolean {
|
|
let res = panic::catch_unwind(|| {
|
|
let network = parse_network(network_id as u32)?;
|
|
let db_cache = block_db(&env, db_cache)?;
|
|
let db_data = wallet_db(&env, network, db_data)?;
|
|
let mut db_data = db_data.get_update_ops()?;
|
|
|
|
match scan_cached_blocks(&network, &db_cache, &mut db_data, Some(limit as u32)) {
|
|
Ok(()) => Ok(JNI_TRUE),
|
|
Err(e) => Err(format_err!("Rust error while scanning block batch: {}", e)),
|
|
}
|
|
});
|
|
unwrap_exc_or(&env, res, JNI_FALSE)
|
|
}
|
|
|
|
#[no_mangle]
|
|
pub unsafe extern "C" fn Java_cash_z_ecc_android_sdk_tool_DerivationTool_deriveTransparentAccountPrivKeyFromSeed(
|
|
env: JNIEnv<'_>,
|
|
_: JClass<'_>,
|
|
seed: jbyteArray,
|
|
account: jint,
|
|
network_id: jint,
|
|
) -> jstring {
|
|
let res = panic::catch_unwind(|| {
|
|
let network = parse_network(network_id as u32)?;
|
|
let seed = env.convert_byte_array(seed).unwrap();
|
|
let account = if account >= 0 {
|
|
AccountId::from(account as u32)
|
|
} else {
|
|
return Err(format_err!("account argument must be positive"));
|
|
};
|
|
// Derive the USK to ensure it exists, and fetch its transparent component.
|
|
let usk = UnifiedSpendingKey::from_seed(&network, &seed, account)
|
|
.map_err(|e| format_err!("error generating unified spending key from seed: {:?}", e))?;
|
|
// Derive the corresponding BIP 32 extended privkey.
|
|
let xprv = utils::p2pkh_xprv(&network, &seed, account)
|
|
.expect("USK derivation should ensure this exists");
|
|
// Verify that we did derive the same privkey.
|
|
assert_eq!(
|
|
usk.transparent().to_account_pubkey().serialize(),
|
|
AccountPrivKey::from_extended_privkey(xprv.extended_key.clone())
|
|
.to_account_pubkey()
|
|
.serialize(),
|
|
);
|
|
// Encode using the BIP 32 xprv serialization format.
|
|
let xprv_str: String = xprv.serialize();
|
|
let output = env
|
|
.new_string(xprv_str)
|
|
.expect("Couldn't create Java string for private key!");
|
|
Ok(output.into_inner())
|
|
});
|
|
unwrap_exc_or(&env, res, ptr::null_mut())
|
|
}
|
|
|
|
#[no_mangle]
|
|
pub unsafe extern "C" fn Java_cash_z_ecc_android_sdk_tool_DerivationTool_deriveTransparentAddressFromSeed(
|
|
env: JNIEnv<'_>,
|
|
_: JClass<'_>,
|
|
seed: jbyteArray,
|
|
account: jint,
|
|
index: jint,
|
|
network_id: jint,
|
|
) -> jstring {
|
|
let res = panic::catch_unwind(|| {
|
|
let network = parse_network(network_id as u32)?;
|
|
let seed = env.convert_byte_array(seed).unwrap();
|
|
let account = if account >= 0 {
|
|
account as u32
|
|
} else {
|
|
return Err(format_err!("account argument must be positive"));
|
|
};
|
|
let index = if index >= 0 {
|
|
index as u32
|
|
} else {
|
|
return Err(format_err!("index argument must be positive"));
|
|
};
|
|
let tfvk = UnifiedSpendingKey::from_seed(&network, &seed, AccountId::from(account))
|
|
.map_err(|e| format_err!("error generating unified spending key from seed: {:?}", e))
|
|
.map(|usk| usk.transparent().to_account_pubkey())?;
|
|
let taddr = match utils::p2pkh_addr(tfvk, index) {
|
|
Ok(taddr) => taddr,
|
|
Err(e) => return Err(format_err!("Couldn't derive transparent address: {:?}", e)),
|
|
};
|
|
let taddr = taddr.encode(&network);
|
|
|
|
let output = env
|
|
.new_string(taddr)
|
|
.expect("Couldn't create Java string for taddr!");
|
|
Ok(output.into_inner())
|
|
});
|
|
unwrap_exc_or(&env, res, ptr::null_mut())
|
|
}
|
|
|
|
#[no_mangle]
|
|
pub unsafe extern "C" fn Java_cash_z_ecc_android_sdk_tool_DerivationTool_deriveTransparentAddressFromAccountPrivKey(
|
|
env: JNIEnv<'_>,
|
|
_: JClass<'_>,
|
|
secret_key: JString<'_>,
|
|
index: jint,
|
|
network_id: jint,
|
|
) -> jstring {
|
|
let res = panic::catch_unwind(|| {
|
|
let network = parse_network(network_id as u32)?;
|
|
let index = if index >= 0 {
|
|
index as u32
|
|
} else {
|
|
return Err(format_err!("index argument must be positive"));
|
|
};
|
|
let xprv_str = utils::java_string_to_rust(&env, secret_key);
|
|
let xprv = match hdwallet_bitcoin::PrivKey::deserialize(xprv_str) {
|
|
Ok(xprv) => xprv,
|
|
Err(e) => return Err(format_err!("Invalid transparent extended privkey: {:?}", e)),
|
|
};
|
|
let tfvk = AccountPrivKey::from_extended_privkey(xprv.extended_key).to_account_pubkey();
|
|
let taddr = match utils::p2pkh_addr(tfvk, index) {
|
|
Ok(taddr) => taddr,
|
|
Err(e) => return Err(format_err!("Couldn't derive transparent address: {:?}", e)),
|
|
};
|
|
let taddr = taddr.encode(&network);
|
|
|
|
let output = env.new_string(taddr).expect("Couldn't create Java string!");
|
|
|
|
Ok(output.into_inner())
|
|
});
|
|
unwrap_exc_or(&env, res, ptr::null_mut())
|
|
}
|
|
|
|
#[no_mangle]
|
|
pub unsafe extern "C" fn Java_cash_z_ecc_android_sdk_tool_DerivationTool_deriveTransparentAddressFromPubKey(
|
|
env: JNIEnv<'_>,
|
|
_: JClass<'_>,
|
|
public_key: JString<'_>,
|
|
network_id: jint,
|
|
) -> jstring {
|
|
#[allow(deprecated)]
|
|
let res = panic::catch_unwind(|| {
|
|
let network = parse_network(network_id as u32)?;
|
|
let public_key_str = utils::java_string_to_rust(&env, public_key);
|
|
let pk = PublicKey::from_str(&public_key_str)?;
|
|
let taddr = pubkey_to_address(&pk).encode(&network);
|
|
|
|
let output = env.new_string(taddr).expect("Couldn't create Java string!");
|
|
|
|
Ok(output.into_inner())
|
|
});
|
|
unwrap_exc_or(&env, res, ptr::null_mut())
|
|
}
|
|
|
|
#[no_mangle]
|
|
pub unsafe extern "C" fn Java_cash_z_ecc_android_sdk_jni_RustBackend_decryptAndStoreTransaction(
|
|
env: JNIEnv<'_>,
|
|
_: JClass<'_>,
|
|
db_data: JString<'_>,
|
|
tx: jbyteArray,
|
|
network_id: jint,
|
|
) -> jboolean {
|
|
let res = panic::catch_unwind(|| {
|
|
let network = parse_network(network_id as u32)?;
|
|
let db_data = wallet_db(&env, network, db_data)?;
|
|
let mut db_data = db_data.get_update_ops()?;
|
|
let tx_bytes = env.convert_byte_array(tx).unwrap();
|
|
// The consensus branch ID passed in here does not matter:
|
|
// - v4 and below cache it internally, but all we do with this transaction while
|
|
// it is in memory is decryption and serialization, neither of which use the
|
|
// consensus branch ID.
|
|
// - v5 and above transactions ignore the argument, and parse the correct value
|
|
// from their encoding.
|
|
let tx = Transaction::read(&tx_bytes[..], BranchId::Sapling)?;
|
|
|
|
match decrypt_and_store_transaction(&network, &mut db_data, &tx) {
|
|
Ok(()) => Ok(JNI_TRUE),
|
|
Err(e) => Err(format_err!("Error while decrypting transaction: {}", e)),
|
|
}
|
|
});
|
|
|
|
unwrap_exc_or(&env, res, JNI_FALSE)
|
|
}
|
|
|
|
#[no_mangle]
|
|
pub unsafe extern "C" fn Java_cash_z_ecc_android_sdk_jni_RustBackend_createToAddress(
|
|
env: JNIEnv<'_>,
|
|
_: JClass<'_>,
|
|
db_data: JString<'_>,
|
|
_: jlong, // was: consensus_branch_id; this is now derived from target/anchor height
|
|
account: jint,
|
|
extsk: JString<'_>,
|
|
to: JString<'_>,
|
|
value: jlong,
|
|
memo: jbyteArray,
|
|
spend_params: JString<'_>,
|
|
output_params: JString<'_>,
|
|
network_id: jint,
|
|
) -> jlong {
|
|
let res = panic::catch_unwind(|| {
|
|
let network = parse_network(network_id as u32)?;
|
|
let db_data = wallet_db(&env, network, db_data)?;
|
|
let mut db_data = db_data.get_update_ops()?;
|
|
let account = if account >= 0 {
|
|
account as u32
|
|
} else {
|
|
return Err(format_err!("account argument must be positive"));
|
|
};
|
|
let extsk = utils::java_string_to_rust(&env, extsk);
|
|
let to = utils::java_string_to_rust(&env, to);
|
|
let value =
|
|
Amount::from_i64(value).map_err(|()| format_err!("Invalid amount, out of range"))?;
|
|
if value.is_negative() {
|
|
return Err(format_err!("Amount is negative"));
|
|
}
|
|
let memo_bytes = env.convert_byte_array(memo).unwrap();
|
|
let spend_params = utils::java_string_to_rust(&env, spend_params);
|
|
let output_params = utils::java_string_to_rust(&env, output_params);
|
|
|
|
let extsk =
|
|
match decode_extended_spending_key(network.hrp_sapling_extended_spending_key(), &extsk)
|
|
{
|
|
Ok(Some(extsk)) => extsk,
|
|
Ok(None) => {
|
|
return Err(format_err!("ExtendedSpendingKey is for the wrong network"));
|
|
}
|
|
Err(e) => {
|
|
return Err(format_err!("Invalid ExtendedSpendingKey: {}", e));
|
|
}
|
|
};
|
|
|
|
let to = match RecipientAddress::decode(&network, &to) {
|
|
Some(to) => to,
|
|
None => {
|
|
return Err(format_err!("Address is for the wrong network"));
|
|
}
|
|
};
|
|
|
|
// TODO: consider warning in this case somehow, rather than swallowing this error
|
|
let memo = match to {
|
|
RecipientAddress::Shielded(_) | RecipientAddress::Unified(_) => {
|
|
let memo_value =
|
|
Memo::from_bytes(&memo_bytes).map_err(|_| format_err!("Invalid memo"))?;
|
|
Some(MemoBytes::from(&memo_value))
|
|
}
|
|
RecipientAddress::Transparent(_) => None,
|
|
};
|
|
|
|
let prover = LocalTxProver::new(Path::new(&spend_params), Path::new(&output_params));
|
|
|
|
// let branch = if
|
|
create_spend_to_address(
|
|
&mut db_data,
|
|
&network,
|
|
prover,
|
|
AccountId::from(account),
|
|
&extsk,
|
|
&to,
|
|
value,
|
|
memo,
|
|
OvkPolicy::Sender,
|
|
ANCHOR_OFFSET,
|
|
)
|
|
.map_err(|e| format_err!("Error while creating transaction: {}", e))
|
|
});
|
|
unwrap_exc_or(&env, res, -1)
|
|
}
|
|
|
|
#[no_mangle]
|
|
pub unsafe extern "C" fn Java_cash_z_ecc_android_sdk_jni_RustBackend_shieldToAddress(
|
|
env: JNIEnv<'_>,
|
|
_: JClass<'_>,
|
|
db_data: JString<'_>,
|
|
account: jint,
|
|
extsk: JString<'_>,
|
|
xprv: JString<'_>,
|
|
memo: jbyteArray,
|
|
spend_params: JString<'_>,
|
|
output_params: JString<'_>,
|
|
network_id: jint,
|
|
) -> jlong {
|
|
let res = panic::catch_unwind(|| {
|
|
let network = parse_network(network_id as u32)?;
|
|
let db_data = wallet_db(&env, network, db_data)?;
|
|
let mut db_data = db_data.get_update_ops()?;
|
|
let account = if account == 0 {
|
|
account as u32
|
|
} else {
|
|
return Err(format_err!("account argument {} must be positive", account));
|
|
};
|
|
let extsk = utils::java_string_to_rust(&env, extsk);
|
|
let xprv_str = utils::java_string_to_rust(&env, xprv);
|
|
let memo_bytes = env.convert_byte_array(memo).unwrap();
|
|
let spend_params = utils::java_string_to_rust(&env, spend_params);
|
|
let output_params = utils::java_string_to_rust(&env, output_params);
|
|
let extfvk =
|
|
match decode_extended_spending_key(network.hrp_sapling_extended_spending_key(), &extsk)
|
|
{
|
|
Ok(Some(extsk)) => ExtendedFullViewingKey::from(&extsk),
|
|
Ok(None) => {
|
|
return Err(format_err!("ExtendedSpendingKey is for the wrong network"));
|
|
}
|
|
Err(e) => {
|
|
return Err(format_err!("Invalid ExtendedSpendingKey: {}", e));
|
|
}
|
|
};
|
|
|
|
let xprv = match hdwallet_bitcoin::PrivKey::deserialize(xprv_str) {
|
|
Ok(xprv) => xprv,
|
|
Err(e) => return Err(format_err!("Invalid transparent extended privkey: {:?}", e)),
|
|
};
|
|
let sk = AccountPrivKey::from_extended_privkey(xprv.extended_key);
|
|
|
|
let memo = Memo::from_bytes(&memo_bytes).unwrap();
|
|
|
|
let prover = LocalTxProver::new(Path::new(&spend_params), Path::new(&output_params));
|
|
|
|
shield_transparent_funds(
|
|
&mut db_data,
|
|
&network,
|
|
prover,
|
|
&sk,
|
|
&extfvk,
|
|
AccountId::from(account),
|
|
&MemoBytes::from(&memo),
|
|
0,
|
|
)
|
|
.map_err(|e| format_err!("Error while shielding transaction: {}", e))
|
|
});
|
|
unwrap_exc_or(&env, res, -1)
|
|
}
|
|
|
|
#[no_mangle]
|
|
pub unsafe extern "C" fn Java_cash_z_ecc_android_sdk_jni_RustBackend_branchIdForHeight(
|
|
env: JNIEnv<'_>,
|
|
_: JClass<'_>,
|
|
height: jlong,
|
|
network_id: jint,
|
|
) -> jlong {
|
|
let res = panic::catch_unwind(|| {
|
|
let network = parse_network(network_id as u32)?;
|
|
let branch: BranchId = BranchId::for_height(&network, BlockHeight::from(height as u32));
|
|
let branch_id: u32 = u32::from(branch);
|
|
debug!(
|
|
"For height {} found consensus branch {:?} with id {}",
|
|
height, branch, branch_id
|
|
);
|
|
Ok(branch_id.into())
|
|
});
|
|
unwrap_exc_or(&env, res, -1)
|
|
}
|
|
|
|
//
|
|
// Utility functions
|
|
//
|
|
|
|
fn parse_network(value: u32) -> Result<Network, failure::Error> {
|
|
match value {
|
|
0 => Ok(TestNetwork),
|
|
1 => Ok(MainNetwork),
|
|
_ => Err(format_err!("Invalid network type: {}. Expected either 0 or 1 for Testnet or Mainnet, respectively.", value))
|
|
}
|
|
}
|