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Posted to commits@teaclave.apache.org by rd...@apache.org on 2022/08/06 15:10:19 UTC
[incubator-teaclave-sgx-sdk] branch v2.0.0-preview updated: Add logger samplecode
This is an automated email from the ASF dual-hosted git repository.
rduan pushed a commit to branch v2.0.0-preview
in repository https://gitbox.apache.org/repos/asf/incubator-teaclave-sgx-sdk.git
The following commit(s) were added to refs/heads/v2.0.0-preview by this push:
new 448d0ba4 Add logger samplecode
448d0ba4 is described below
commit 448d0ba4d83fe0f517701c5e5152b156731eb86c
Author: volcano <vo...@163.com>
AuthorDate: Sat Aug 6 23:10:10 2022 +0800
Add logger samplecode
---
samplecode/logger/Makefile | 191 ++++++++++++++++++++++++++++++++++
samplecode/logger/app/Cargo.toml | 26 +++++
samplecode/logger/app/build.rs | 37 +++++++
samplecode/logger/app/src/main.rs | 63 +++++++++++
samplecode/logger/enclave/Cargo.toml | 34 ++++++
samplecode/logger/enclave/Xargo.toml | 24 +++++
samplecode/logger/enclave/config.xml | 31 ++++++
samplecode/logger/enclave/enclave.edl | 26 +++++
samplecode/logger/enclave/enclave.lds | 12 +++
samplecode/logger/enclave/private.pem | 39 +++++++
samplecode/logger/enclave/src/lib.rs | 39 +++++++
11 files changed, 522 insertions(+)
diff --git a/samplecode/logger/Makefile b/samplecode/logger/Makefile
new file mode 100644
index 00000000..e5ebd227
--- /dev/null
+++ b/samplecode/logger/Makefile
@@ -0,0 +1,191 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied. See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+######## SGX SDK Settings ########
+
+SGX_SDK ?= /opt/intel/sgxsdk
+SGX_MODE ?= HW
+SGX_ARCH ?= x64
+
+TOP_DIR := ../..
+include $(TOP_DIR)/buildenv.mk
+
+ifeq ($(shell getconf LONG_BIT), 32)
+ SGX_ARCH := x86
+else ifeq ($(findstring -m32, $(CXXFLAGS)), -m32)
+ SGX_ARCH := x86
+endif
+
+ifeq ($(SGX_ARCH), x86)
+ SGX_COMMON_CFLAGS := -m32
+ SGX_LIBRARY_PATH := $(SGX_SDK)/lib
+ SGX_BIN_PATH := $(SGX_SDK)/bin/x86
+else
+ SGX_COMMON_CFLAGS := -m64
+ SGX_LIBRARY_PATH := $(SGX_SDK)/lib64
+ SGX_BIN_PATH := $(SGX_SDK)/bin/x64
+endif
+
+SGX_EDGER8R := $(SGX_BIN_PATH)/sgx_edger8r
+ifneq ($(SGX_MODE), HYPER)
+ SGX_ENCLAVE_SIGNER := $(SGX_BIN_PATH)/sgx_sign
+else
+ SGX_ENCLAVE_SIGNER := $(SGX_BIN_PATH)/sgx_sign_hyper
+ SGX_EDGER8R_MODE := --sgx-mode $(SGX_MODE)
+endif
+
+######## CUSTOM Settings ########
+
+CUSTOM_LIBRARY_PATH := ./lib
+CUSTOM_BIN_PATH := ./bin
+CUSTOM_SYSROOT_PATH := ./sysroot
+CUSTOM_EDL_PATH := $(ROOT_DIR)/sgx_edl/edl
+CUSTOM_COMMON_PATH := $(ROOT_DIR)/common
+
+######## EDL Settings ########
+
+Enclave_EDL_Files := enclave/enclave_t.c enclave/enclave_t.h app/enclave_u.c app/enclave_u.h
+
+######## APP Settings ########
+
+App_Rust_Flags := --release
+App_Src_Files := $(shell find app/ -type f -name '*.rs') $(shell find app/ -type f -name 'Cargo.toml')
+App_Include_Paths := -I ./app -I$(SGX_SDK)/include -I$(CUSTOM_COMMON_PATH)/inc -I$(CUSTOM_EDL_PATH)
+App_C_Flags := $(CFLAGS) -fPIC -Wno-attributes $(App_Include_Paths)
+
+App_Rust_Path := ./app/target/release
+App_Enclave_u_Object := $(CUSTOM_LIBRARY_PATH)/libenclave_u.a
+App_Name := $(CUSTOM_BIN_PATH)/app
+
+######## Enclave Settings ########
+
+# BUILD_STD=no use no_std
+# BUILD_STD=cargo use cargo-std-aware
+# BUILD_STD=xargo use xargo
+BUILD_STD ?= cargo
+
+Rust_Build_Target := x86_64-unknown-linux-sgx
+Rust_Target_Path := $(ROOT_DIR)/rustlib
+
+ifneq ($(BUILD_STD), cargo)
+ifneq ($(BUILD_STD), xargo)
+$(error Only supports building with build_std strategy!!)
+endif
+endif
+
+ifeq ($(BUILD_STD), cargo)
+ Rust_Build_Std := --release -Z build-std=core,alloc
+ Rust_Std_Features := --features env,untrusted_time,untrusted_fs
+ Rust_Target_Flags := --target $(Rust_Target_Path)/$(Rust_Build_Target).json
+ Rust_Sysroot_Path := $(CURDIR)/sysroot
+ Rust_Sysroot_Flags := RUSTFLAGS="--sysroot $(Rust_Sysroot_Path)"
+else
+ Rust_Unstable_Flags := RUSTFLAGS="-Z force-unstable-if-unmarked"
+endif
+
+RustEnclave_Build_Flags := --release
+RustEnclave_Src_Files := $(shell find enclave/ -type f -name '*.rs') $(shell find enclave/ -type f -name 'Cargo.toml')
+RustEnclave_Include_Paths := -I$(CUSTOM_COMMON_PATH)/inc -I$(CUSTOM_COMMON_PATH)/inc/tlibc -I$(CUSTOM_EDL_PATH)
+
+RustEnclave_Link_Libs := -L$(CUSTOM_LIBRARY_PATH) -lenclave
+RustEnclave_Compile_Flags := $(ENCLAVE_CFLAGS) $(RustEnclave_Include_Paths)
+RustEnclave_Link_Flags := -Wl,--no-undefined -nostdlib -nodefaultlibs -nostartfiles \
+ -Wl,--start-group $(RustEnclave_Link_Libs) -Wl,--end-group \
+ -Wl,--version-script=enclave/enclave.lds \
+ $(ENCLAVE_LDFLAGS)
+
+RustEnclave_Out_Path := ./enclave/target/$(Rust_Build_Target)/release
+RustEnclave_Lib_Name := $(RustEnclave_Out_Path)/liblogger.a
+RustEnclave_Name := $(CUSTOM_BIN_PATH)/enclave.so
+RustEnclave_Signed_Name := $(CUSTOM_BIN_PATH)/enclave.signed.so
+
+.PHONY: all
+all: $(Enclave_EDL_Files) $(App_Name) $(RustEnclave_Signed_Name)
+
+######## EDL Objects ########
+
+$(Enclave_EDL_Files): $(SGX_EDGER8R) enclave/enclave.edl
+ $(SGX_EDGER8R) $(SGX_EDGER8R_MODE) --trusted enclave/enclave.edl --search-path $(CUSTOM_COMMON_PATH)/inc --search-path $(CUSTOM_EDL_PATH) --trusted-dir enclave
+ $(SGX_EDGER8R) $(SGX_EDGER8R_MODE) --untrusted enclave/enclave.edl --search-path $(CUSTOM_COMMON_PATH)/inc --search-path $(CUSTOM_EDL_PATH) --untrusted-dir app
+ @echo "GEN => $(Enclave_EDL_Files)"
+
+######## App Objects ########
+
+app/enclave_u.o: $(Enclave_EDL_Files)
+ @$(CC) $(App_C_Flags) -c app/enclave_u.c -o $@
+
+$(App_Enclave_u_Object): app/enclave_u.o
+ @mkdir -p $(CUSTOM_LIBRARY_PATH)
+ @$(AR) rcsD $@ $^
+
+$(App_Name): $(App_Enclave_u_Object) app
+ @mkdir -p $(CUSTOM_BIN_PATH)
+ @cp $(App_Rust_Path)/app $(CUSTOM_BIN_PATH)
+ @echo "LINK => $@"
+
+######## Enclave Objects ########
+
+enclave/enclave_t.o: $(Enclave_EDL_Files)
+ @$(CC) $(RustEnclave_Compile_Flags) -c enclave/enclave_t.c -o $@
+
+$(RustEnclave_Name): enclave/enclave_t.o enclave
+ @mkdir -p $(CUSTOM_LIBRARY_PATH)
+ @mkdir -p $(CUSTOM_BIN_PATH)
+ @cp $(RustEnclave_Lib_Name) $(CUSTOM_LIBRARY_PATH)/libenclave.a
+ @$(CXX) enclave/enclave_t.o -o $@ $(RustEnclave_Link_Flags)
+ @echo "LINK => $@"
+
+$(RustEnclave_Signed_Name): $(RustEnclave_Name) enclave/config.xml
+ @$(SGX_ENCLAVE_SIGNER) sign -key enclave/private.pem -enclave $(RustEnclave_Name) -out $@ -config enclave/config.xml
+ @echo "SIGN => $@"
+
+######## Build App ########
+
+.PHONY: app
+app:
+ @cd app && SGX_SDK=$(SGX_SDK) cargo build $(App_Rust_Flags)
+
+######## Build Enclave ########
+
+.PHONY: enclave
+enclave:
+ifeq ($(BUILD_STD), cargo)
+ @cd $(Rust_Target_Path)/std && cargo build $(Rust_Build_Std) $(Rust_Target_Flags) $(Rust_Std_Features)
+
+ @rm -rf $(Rust_Sysroot_Path)
+ @mkdir -p $(Rust_Sysroot_Path)/lib/rustlib/$(Rust_Build_Target)/lib
+ @cp -r $(Rust_Target_Path)/std/target/$(Rust_Build_Target)/release/deps/* $(Rust_Sysroot_Path)/lib/rustlib/$(Rust_Build_Target)/lib
+
+ @cd enclave && $(Rust_Sysroot_Flags) cargo build $(Rust_Target_Flags) $(RustEnclave_Build_Flags)
+else
+ @cd enclave && $(Rust_Unstable_Flags) RUST_TARGET_PATH=$(Rust_Target_Path) xargo build --target $(Rust_Build_Target) $(RustEnclave_Build_Flags)
+endif
+
+######## Run Enclave ########
+
+.PHONY: run
+run: $(App_Name) $(RustEnclave_Signed_Name)
+ @echo -e '\n===== Run Enclave =====\n'
+ @cd bin && RUST_LOG=trace ./app
+
+.PHONY: clean
+clean:
+ @rm -f $(App_Name) $(RustEnclave_Name) $(RustEnclave_Signed_Name) enclave/*_t.* app/*_u.*
+ @cd enclave && cargo clean
+ @cd app && cargo clean
+ @cd $(Rust_Target_Path)/std && cargo clean
+ @rm -rf $(CUSTOM_BIN_PATH) $(CUSTOM_LIBRARY_PATH) $(CUSTOM_SYSROOT_PATH)
diff --git a/samplecode/logger/app/Cargo.toml b/samplecode/logger/app/Cargo.toml
new file mode 100644
index 00000000..b289769a
--- /dev/null
+++ b/samplecode/logger/app/Cargo.toml
@@ -0,0 +1,26 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied. See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+[package]
+name = "app"
+version = "1.0.0"
+authors = ["The Teaclave Authors"]
+edition = "2021"
+
+[dependencies]
+sgx_types = { path = "../../../sgx_types" }
+sgx_urts = { path = "../../../sgx_urts" }
diff --git a/samplecode/logger/app/build.rs b/samplecode/logger/app/build.rs
new file mode 100644
index 00000000..23b8f5e7
--- /dev/null
+++ b/samplecode/logger/app/build.rs
@@ -0,0 +1,37 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements. See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership. The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License..
+
+use std::env;
+
+fn main() {
+ println!("cargo:rerun-if-env-changed=SGX_MODE");
+ println!("cargo:rerun-if-changed=build.rs");
+
+ let sdk_dir = env::var("SGX_SDK").unwrap_or_else(|_| "/opt/intel/sgxsdk".to_string());
+ let mode = env::var("SGX_MODE").unwrap_or_else(|_| "HW".to_string());
+
+ println!("cargo:rustc-link-search=native=../lib");
+ println!("cargo:rustc-link-lib=static=enclave_u");
+
+ println!("cargo:rustc-link-search=native={}/lib64", sdk_dir);
+ match mode.as_ref() {
+ "SIM" | "SW" => println!("cargo:rustc-link-lib=dylib=sgx_urts_sim"),
+ "HYPER" => println!("cargo:rustc-link-lib=dylib=sgx_urts_hyper"),
+ "HW" => println!("cargo:rustc-link-lib=dylib=sgx_urts"),
+ _ => println!("cargo:rustc-link-lib=dylib=sgx_urts"),
+ }
+}
diff --git a/samplecode/logger/app/src/main.rs b/samplecode/logger/app/src/main.rs
new file mode 100644
index 00000000..c896afad
--- /dev/null
+++ b/samplecode/logger/app/src/main.rs
@@ -0,0 +1,63 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements. See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership. The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License..
+
+extern crate sgx_types;
+extern crate sgx_urts;
+
+use sgx_types::error::SgxStatus;
+use sgx_types::types::*;
+use sgx_urts::enclave::SgxEnclave;
+
+static ENCLAVE_FILE: &str = "enclave.signed.so";
+
+extern "C" {
+ fn output_log(
+ eid: EnclaveId,
+ retval: *mut SgxStatus,
+ some_string: *const u8,
+ len: usize,
+ ) -> SgxStatus;
+}
+
+fn main() {
+ let enclave = match SgxEnclave::create(ENCLAVE_FILE, true) {
+ Ok(enclave) => {
+ println!("[+] Init Enclave Successful {}!", enclave.eid());
+ enclave
+ }
+ Err(err) => {
+ println!("[-] Init Enclave Failed {}!", err.as_str());
+ return;
+ }
+ };
+
+ let input_string = String::from("This is a normal world string passed into Enclave.");
+ let mut retval = SgxStatus::Success;
+
+ let result = unsafe {
+ output_log(
+ enclave.eid(),
+ &mut retval,
+ input_string.as_ptr() as *const u8,
+ input_string.len(),
+ )
+ };
+ match result {
+ SgxStatus::Success => println!("[+] ECall Success..."),
+ _ => println!("[-] ECall Enclave Failed {}!", result.as_str()),
+ }
+}
diff --git a/samplecode/logger/enclave/Cargo.toml b/samplecode/logger/enclave/Cargo.toml
new file mode 100644
index 00000000..f68e0644
--- /dev/null
+++ b/samplecode/logger/enclave/Cargo.toml
@@ -0,0 +1,34 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied. See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+[package]
+name = "logger"
+version = "1.0.0"
+authors = ["The Teaclave Authors"]
+edition = "2021"
+
+[lib]
+name = "logger"
+crate-type = ["staticlib"]
+
+[features]
+default = []
+
+[dependencies]
+log = "0.4"
+env_logger = "0.9"
+sgx_libc = { path = "../../../sgx_libc" }
diff --git a/samplecode/logger/enclave/Xargo.toml b/samplecode/logger/enclave/Xargo.toml
new file mode 100644
index 00000000..39269767
--- /dev/null
+++ b/samplecode/logger/enclave/Xargo.toml
@@ -0,0 +1,24 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied. See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+[dependencies]
+alloc = {}
+
+[dependencies.std]
+path = "../../../rustlib/std"
+features = ["env", "untrusted_fs", "untrusted_time"]
+stage = 1
diff --git a/samplecode/logger/enclave/config.xml b/samplecode/logger/enclave/config.xml
new file mode 100644
index 00000000..0cf1f46d
--- /dev/null
+++ b/samplecode/logger/enclave/config.xml
@@ -0,0 +1,31 @@
+<!--
+ ~ Licensed to the Apache Software Foundation (ASF) under one
+ ~ or more contributor license agreements. See the NOTICE file
+ ~ distributed with this work for additional information
+ ~ regarding copyright ownership. The ASF licenses this file
+ ~ to you under the Apache License, Version 2.0 (the
+ ~ "License"); you may not use this file except in compliance
+ ~ with the License. You may obtain a copy of the License at
+ ~
+ ~ http://www.apache.org/licenses/LICENSE-2.0
+ ~
+ ~ Unless required by applicable law or agreed to in writing,
+ ~ software distributed under the License is distributed on an
+ ~ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ ~ KIND, either express or implied. See the License for the
+ ~ specific language governing permissions and limitations
+ ~ under the License.
+ ~
+-->
+<!-- Please refer to User's Guide for the explanation of each field -->
+<EnclaveConfiguration>
+ <ProdID>0</ProdID>
+ <ISVSVN>0</ISVSVN>
+ <StackMaxSize>0x40000</StackMaxSize>
+ <HeapMaxSize>0x100000</HeapMaxSize>
+ <TCSNum>1</TCSNum>
+ <TCSPolicy>0</TCSPolicy>
+ <DisableDebug>0</DisableDebug>
+ <MiscSelect>0</MiscSelect>
+ <MiscMask>0xFFFFFFFF</MiscMask>
+</EnclaveConfiguration>
diff --git a/samplecode/logger/enclave/enclave.edl b/samplecode/logger/enclave/enclave.edl
new file mode 100644
index 00000000..d20ab559
--- /dev/null
+++ b/samplecode/logger/enclave/enclave.edl
@@ -0,0 +1,26 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements. See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership. The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+enclave {
+ from "sgx_env.edl" import *;
+ from "sgx_stdio.edl" import *;
+ from "sgx_tstd.edl" import *;
+
+ trusted {
+ public sgx_status_t output_log([in, size=len] const uint8_t* some_string, size_t len);
+ };
+};
diff --git a/samplecode/logger/enclave/enclave.lds b/samplecode/logger/enclave/enclave.lds
new file mode 100644
index 00000000..bdb7a4b5
--- /dev/null
+++ b/samplecode/logger/enclave/enclave.lds
@@ -0,0 +1,12 @@
+enclave.so
+{
+ global:
+ g_global_data_hyper;
+ g_global_data_sim;
+ g_global_data;
+ enclave_entry;
+ g_peak_heap_used;
+ g_peak_rsrv_mem_committed;
+ local:
+ *;
+};
diff --git a/samplecode/logger/enclave/private.pem b/samplecode/logger/enclave/private.pem
new file mode 100644
index 00000000..529d07be
--- /dev/null
+++ b/samplecode/logger/enclave/private.pem
@@ -0,0 +1,39 @@
+-----BEGIN RSA PRIVATE KEY-----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+NZmwRwlopysbR69B/n1nefJ84UO50fLh5s5Zr3gBRwbWNZyzhXk=
+-----END RSA PRIVATE KEY-----
diff --git a/samplecode/logger/enclave/src/lib.rs b/samplecode/logger/enclave/src/lib.rs
new file mode 100644
index 00000000..71806a29
--- /dev/null
+++ b/samplecode/logger/enclave/src/lib.rs
@@ -0,0 +1,39 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements. See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership. The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License..
+
+extern crate sgx_libc;
+extern crate sgx_types;
+
+use log::{debug, error, info, trace};
+use sgx_types::error::SgxStatus;
+use std::slice;
+use std::string::String;
+
+/// # Safety
+#[no_mangle]
+pub unsafe extern "C" fn output_log(some_string: *const u8, some_len: usize) -> SgxStatus {
+ env_logger::init();
+
+ debug!("this is a debug {}.", "message");
+ error!("this is printed by default.");
+
+ let str_slice = slice::from_raw_parts(some_string, some_len);
+ info!("{}", String::from_utf8(str_slice.to_vec()).unwrap());
+ trace!("{}", "This is a in-Enclave Rust string.");
+
+ SgxStatus::Success
+}
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