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Fix kotlin wallet struct access via JNA opaque pointer

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This commit is contained in:
Steve Myers 2021-06-10 13:40:58 -07:00
parent 2aad5d4428
commit 308d4af4f1
5 changed files with 137 additions and 120 deletions
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1
.gitignore vendored
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@ -5,3 +5,4 @@ Cargo.lock
/local.properties
.gradle
wallet_db
bdk_ffi_test

72
bdk_ffi_test.c Normal file
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@ -0,0 +1,72 @@
#include <assert.h>
#include <stdlib.h>
#include <stdio.h>
#include "bdk_ffi.h"
int main (int argc, char const * const argv[])
{
// test print_string
print_string("hello 123");
// test concat_string
char const * string1 = "string1";
char const * string2 = "string2";
char * string3 = concat_string(string1, string2);
print_string(string3);
free_string(string3);
// verify free_string after free_string fails
////free_string(string3);
// test print_config with c created config
Config_t config1 = { .name = "test", .count = 101 };
print_config(&config1);
// test new_config
Config_t * config2 = new_config("test test", 202);
print_config(config2);
// test free_config
free_config(config2);
// verify print_config after free_config fails (invalid data)
////print_config(config2);
// verify free_config after free_config fails (double free detected, core dumped)
////free_config(config2);
char const * name = "test_wallet";
char const * desc = "wpkh([c258d2e4/84h/1h/0h]tpubDDYkZojQFQjht8Tm4jsS3iuEmKjTiEGjG6KnuFNKKJb5A6ZUCUZKdvLdSDWofKi4ToRCwb9poe1XdqfUnP4jaJjCB2Zwv11ZLgSbnZSNecE/0/*)";
char const * change = "wpkh([c258d2e4/84h/1h/0h]tpubDDYkZojQFQjht8Tm4jsS3iuEmKjTiEGjG6KnuFNKKJb5A6ZUCUZKdvLdSDWofKi4ToRCwb9poe1XdqfUnP4jaJjCB2Zwv11ZLgSbnZSNecE/1/*)";
//char const * change = NULL;
// test new_wallet
{
WalletPtr_t * wallet = new_wallet(name, desc, change);
// test sync_wallet
sync_wallet(wallet);
printf("after sync_wallet\n");
sync_wallet(wallet);
printf("after sync_wallet\n");
// test new_address
char * address1 = new_address(wallet);
printf("address1: %s\n", address1);
free_string(address1);
assert(address1 != NULL);
char * address2 = new_address(wallet);
printf("address2: %s\n", address2);
assert(address2 != NULL);
free_string(address2);
// test free_wallet
free_wallet(wallet);
printf("after free_wallet\n");
// test free_wallet NULL doesn't crash
free_wallet(NULL);
// verify sync_wallet after sync_wallet fails (double free detected, core dumped)
////sync_wallet(&wallet);
}
return EXIT_SUCCESS;
}

10
build.sh
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@ -1,9 +1,13 @@
# rust
cargo build
cargo test --features c-headers -- generate_headers
cc main.c -o main -L target/debug -l bdk_ffi -l pthread -l dl -l m
./main
export LD_LIBRARY_PATH=`pwd`/target/debug
# cc
cc bdk_ffi_test.c -o bdk_ffi_test -L target/debug -l bdk_ffi -l pthread -l dl -l m
#valgrind --leak-check=full ./bdk_ffi_test
./bdk_ffi_test
# jvm
mkdir -p jvm/build/jniLibs/x86_64_linux
cp target/debug/libbdk_ffi.so jvm/build/jniLibs/x86_64_linux
export LD_LIBRARY_PATH=`pwd`/target/debug

55
main.c
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@ -1,55 +0,0 @@
#include <stdlib.h>
#include <stdio.h>
#include "bdk_ffi.h"
int main (int argc, char const * const argv[])
{
// test print_string
print_string("hello 123");
// test concat_string
char const * string1 = "string1";
char const * string2 = "string2";
char * string3 = concat_string(string1, string2);
print_string(string3);
free_string(string3);
// verify free_string after free_string fails
////free_string(string3);
// test print_config with c created config
Config_t config1 = { .name = "test", .count = 101 };
print_config(&config1);
// test new_config
Config_t * config2 = new_config("test test", 202);
print_config(config2);
// test free_config
free_config(config2);
// verify print_config after free_config fails (invalid data)
////print_config(config2);
// verify free_config after free_config fails (double free detected, core dumped)
////free_config(config2);
//char const * name = "test_wallet";
//char const * desc = "wpkh([c258d2e4/84h/1h/0h]tpubDDYkZojQFQjht8Tm4jsS3iuEmKjTiEGjG6KnuFNKKJb5A6ZUCUZKdvLdSDWofKi4ToRCwb9poe1XdqfUnP4jaJjCB2Zwv11ZLgSbnZSNecE/0/*)";
//char const * change = "wpkh([c258d2e4/84h/1h/0h]tpubDDYkZojQFQjht8Tm4jsS3iuEmKjTiEGjG6KnuFNKKJb5A6ZUCUZKdvLdSDWofKi4ToRCwb9poe1XdqfUnP4jaJjCB2Zwv11ZLgSbnZSNecE/1/*)";
////printf("wallet name: %s\n", name);
////printf("descriptor: %s\n", desc);
////printf("change descriptor: %s\n", change);
//WalletPtr_t * wallet = new_wallet(name, desc, change);
//sync_wallet(&wallet);
//sync_wallet(&wallet);
//char const * address1 = new_address(&wallet);
//printf("address1: %s\n", address1);
//char const * address2 = new_address(&wallet);
//printf("address: %s\n", address2);
//free_wallet(wallet);
////sync_wallet(&wallet);
return EXIT_SUCCESS;
}

119
src/lib.rs
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@ -64,73 +64,68 @@ fn free_config(config: Box<Config>) {
drop(config)
}
//#[derive_ReprC]
//#[ReprC::opaque]
//pub struct WalletPtr {
// raw: Wallet<ElectrumBlockchain, Tree>,
//}
#[derive_ReprC]
#[ReprC::opaque]
pub struct WalletPtr {
raw: Wallet<ElectrumBlockchain, Tree>,
}
//impl From<Wallet<ElectrumBlockchain, Tree>> for WalletPtr {
// fn from(wallet: Wallet<ElectrumBlockchain, Tree>) -> Self {
// WalletPtr {
// raw: wallet,
// }
// }
//}
impl From<Wallet<ElectrumBlockchain, Tree>> for WalletPtr {
fn from(wallet: Wallet<ElectrumBlockchain, Tree>) -> Self {
WalletPtr {
raw: wallet,
}
}
}
//#[ffi_export]
//fn new_wallet<'a>(
// name: char_p_ref<'a>,
// descriptor: char_p_ref<'a>,
// change_descriptor: Option<char_p_ref<'a>>,
//) -> Box<WalletPtr> {
// let name = name.to_string();
// let descriptor = descriptor.to_string();
// let change_descriptor = change_descriptor.map(|s| s.to_string());
//
// let database = sled::open("./wallet_db").unwrap();
// let tree = database.open_tree(name.clone()).unwrap();
//
// let descriptor: &str = descriptor.as_str();
// let change_descriptor: Option<&str> = change_descriptor.as_deref();
//
// let electrum_url = "ssl://electrum.blockstream.info:60002";
// let client = Client::new(&electrum_url).unwrap();
//
// let wallet = Wallet::new(
// descriptor,
// change_descriptor,
// Testnet,
// tree,
// ElectrumBlockchain::from(client),
// )
// .unwrap();
//
// Box::new(WalletPtr::from(wallet))
//}
#[ffi_export]
fn new_wallet(
name: char_p_ref,
descriptor: char_p_ref,
change_descriptor: Option<char_p_ref>,
) -> Box<WalletPtr> {
let name = name.to_string();
let descriptor = descriptor.to_string();
let change_descriptor = change_descriptor.map(|s| s.to_string());
//#[ffi_export]
//fn sync_wallet( wallet: &Box<WalletPtr>) {
// println!("before sync");
// let _r = wallet.raw.sync(log_progress(), Some(100));
// println!("after sync");
//}
let database = sled::open("./wallet_db").unwrap();
let tree = database.open_tree(name.clone()).unwrap();
//#[ffi_export]
//fn new_address( wallet: &Box<WalletPtr>) -> char_p_boxed {
// println!("before new_address");
// let new_address = wallet.raw.get_address(New);
// println!("after new_address: {:?}", new_address);
// let new_address = new_address.unwrap();
// let new_address = new_address.to_string();
// println!("new address: ${}", new_address);
// new_address.try_into().unwrap()
//}
let descriptor: &str = descriptor.as_str();
let change_descriptor: Option<&str> = change_descriptor.as_deref();
//#[ffi_export]
//fn free_wallet( wallet: Box<WalletPtr>) {
// drop(wallet)
//}
let electrum_url = "ssl://electrum.blockstream.info:60002";
let client = Client::new(&electrum_url).unwrap();
let wallet = Wallet::new(
descriptor,
change_descriptor,
Testnet,
tree,
ElectrumBlockchain::from(client),
)
.unwrap();
println!("created wallet");
Box::new(WalletPtr::from(wallet))
}
#[ffi_export]
fn sync_wallet( wallet: &WalletPtr) {
let _r = wallet.raw.sync(log_progress(), Some(100));
}
#[ffi_export]
fn new_address( wallet: &WalletPtr) -> char_p_boxed {
let new_address = wallet.raw.get_address(New);
let new_address = new_address.unwrap();
let new_address = new_address.to_string();
new_address.try_into().unwrap()
}
#[ffi_export]
fn free_wallet( wallet: Option<Box<WalletPtr>>) {
drop(wallet)
}
/// The following test function is necessary for the header generation.
#[::safer_ffi::cfg_headers]