feat: ckb crypto service

Cargo.toml

@@ -5,6 +5,7 @@ members = [ "crates/ckb-script-ipc", "crates/ckb-script-ipc-common",
   # Please don't remove the following line, we use it to automatically
   # detect insertion point for newly generated crates.
   # @@INSERTION_POINT@@
+  "contracts/ckb-crypto-service",
   "contracts/ckb-script-ipc-demo",
   "contracts/unit-tests",
   "tests",

contracts/ckb-crypto-service/.gitignore

@@ -0,0 +1,2 @@
+/build
+/target

contracts/ckb-crypto-service/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "ckb-crypto-service"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+# TODO: update it to ckb-std 0.16.0 when it's published
+ckb-std = { git = "https://github.com/nervosnetwork/ckb-std.git", default-features = false, features = ["allocator", "ckb-types", "dummy-atomic", "log"], rev = "d74821c" }

contracts/ckb-crypto-service/Makefile

@@ -0,0 +1,77 @@
+# We cannot use $(shell pwd), which will return unix path format on Windows,
+# making it hard to use.
+cur_dir = $(dir $(abspath $(lastword $(MAKEFILE_LIST))))
+
+TOP := $(cur_dir)
+# RUSTFLAGS that are likely to be tweaked by developers. For example,
+# while we enable debug logs by default here, some might want to strip them
+# for minimal code size / consumed cycles.
+CUSTOM_RUSTFLAGS := --cfg debug_assertions
+# RUSTFLAGS that are less likely to be tweaked by developers. Most likely
+# one would want to keep the default values here.
+FULL_RUSTFLAGS := -C target-feature=+zba,+zbb,+zbc,+zbs,-a $(CUSTOM_RUSTFLAGS)
+# Additional cargo args to append here. For example, one can use
+# make test CARGO_ARGS="-- --nocapture" so as to inspect data emitted to
+# stdout in unit tests
+CARGO_ARGS :=
+MODE := release
+# Tweak this to change the clang version to use for building C code. By default
+# we use a bash script with somes heuristics to find clang in current system.
+CLANG := $(shell $(TOP)/scripts/find_clang)
+AR := $(subst clang,llvm-ar,$(CLANG))
+# When this is set to some value, the generated binaries will be copied over
+BUILD_DIR :=
+# Generated binaries to copy. By convention, a Rust crate's directory name will
+# likely match the crate name, which is also the name of the final binary.
+# However if this is not the case, you can tweak this variable. As the name hints,
+# more than one binary is supported here.
+BINARIES := $(notdir $(shell pwd))
+
+ifeq (release,$(MODE))
+	MODE_ARGS := --release
+endif
+
+default: build test
+
+build:
+	RUSTFLAGS="$(FULL_RUSTFLAGS)" TARGET_CC="$(CLANG)" TARGET_AR="$(AR)" \
+		cargo build --target=riscv64imac-unknown-none-elf $(MODE_ARGS) $(CARGO_ARGS)
+	@set -eu; \
+	if [ "x$(BUILD_DIR)" != "x" ]; then \
+		for binary in $(BINARIES); do \
+			echo "Copying binary $$binary to build directory"; \
+			cp $(TOP)/target/riscv64imac-unknown-none-elf/$(MODE)/$$binary $(TOP)/$(BUILD_DIR); \
+		done \
+	fi
+
+# test, check, clippy and fmt here are provided for completeness,
+# there is nothing wrong invoking cargo directly instead of make.
+test:
+	cargo test $(CARGO_ARGS)
+
+check:
+	cargo check $(CARGO_ARGS)
+
+clippy:
+	cargo clippy $(CARGO_ARGS)
+
+fmt:
+	cargo fmt $(CARGO_ARGS)
+
+# Arbitrary cargo command is supported here. For example:
+#
+# make cargo CARGO_CMD=expand CARGO_ARGS="--ugly"
+# 
+# Invokes:
+# cargo expand --ugly
+CARGO_CMD :=
+cargo:
+	cargo $(CARGO_CMD) $(CARGO_ARGS)
+
+clean:
+	cargo clean
+
+prepare:
+	rustup target add riscv64imac-unknown-none-elf
+
+.PHONY: build test check clippy fmt cargo clean prepare

contracts/ckb-crypto-service/README.md

@@ -0,0 +1,7 @@
+# ckb-crypto-service
+
+TODO: Write this readme
+
+*This contract was bootstrapped with [ckb-script-templates].*
+
+[ckb-script-templates]: https://github.com/cryptape/ckb-script-templates

contracts/ckb-crypto-service/src/main.rs

@@ -0,0 +1,18 @@
+#![no_std]
+#![cfg_attr(not(test), no_main)]
+
+#[cfg(test)]
+extern crate alloc;
+
+#[cfg(not(test))]
+use ckb_std::default_alloc;
+#[cfg(not(test))]
+ckb_std::entry!(program_entry);
+#[cfg(not(test))]
+default_alloc!();
+
+pub fn program_entry() -> i8 {
+    ckb_std::debug!("This is a sample contract!");
+
+    0
+}

tests/src/tests.rs

@@ -106,3 +106,55 @@ fn test_unit_tests() {
         .expect("pass verification");
     println!("consume cycles: {}", cycles);
 }
+
+// generated unit test for contract ckb-crypto-service
+#[test]
+fn test_ckb_crypto_service() {
+    // deploy contract
+    let mut context = Context::default();
+    let contract_bin: Bytes = Loader::default().load_binary("ckb-crypto-service");
+    let out_point = context.deploy_cell(contract_bin);
+
+    // prepare scripts
+    let lock_script = context
+        .build_script(&out_point, Bytes::from(vec![42]))
+        .expect("script");
+
+    // prepare cells
+    let input_out_point = context.create_cell(
+        CellOutput::new_builder()
+            .capacity(1000u64.pack())
+            .lock(lock_script.clone())
+            .build(),
+        Bytes::new(),
+    );
+    let input = CellInput::new_builder()
+        .previous_output(input_out_point)
+        .build();
+    let outputs = vec![
+        CellOutput::new_builder()
+            .capacity(500u64.pack())
+            .lock(lock_script.clone())
+            .build(),
+        CellOutput::new_builder()
+            .capacity(500u64.pack())
+            .lock(lock_script)
+            .build(),
+    ];
+
+    let outputs_data = vec![Bytes::new(); 2];
+
+    // build transaction
+    let tx = TransactionBuilder::default()
+        .input(input)
+        .outputs(outputs)
+        .outputs_data(outputs_data.pack())
+        .build();
+    let tx = context.complete_tx(tx);
+
+    // run
+    let cycles = context
+        .verify_tx(&tx, 10_000_000)
+        .expect("pass verification");
+    println!("consume cycles: {}", cycles);
+}