| // Copyright (C) 2017-2019 Baidu, Inc. All Rights Reserved. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions |
| // are met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above copyright |
| // notice, this list of conditions and the following disclaimer in |
| // the documentation and/or other materials provided with the |
| // distribution. |
| // * Neither the name of Baidu, Inc., nor the names of its |
| // contributors may be used to endorse or promote products derived |
| // from this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #![crate_name = "backtracesampleenclave"] |
| #![crate_type = "staticlib"] |
| |
| #![cfg_attr(not(target_env = "sgx"), no_std)] |
| #![cfg_attr(target_env = "sgx", feature(rustc_private))] |
| |
| extern crate sgx_types; |
| #[cfg(not(target_env = "sgx"))] |
| #[macro_use] |
| extern crate sgx_tstd as std; |
| |
| extern crate sgx_backtrace; |
| use sgx_backtrace::Backtrace; |
| |
| use sgx_types::*; |
| use std::string::String; |
| use std::vec::Vec; |
| use std::slice; |
| use std::io::{self, Write}; |
| use std::backtrace::{self, PrintFormat}; |
| use std::panic; |
| |
| /// A function simply invokes ocall print to print the incoming string |
| /// |
| /// # Parameters |
| /// |
| /// **some_string** |
| /// |
| /// A pointer to the string to be printed |
| /// |
| /// **len** |
| /// |
| /// An unsigned int indicates the length of str |
| /// |
| /// # Return value |
| /// |
| /// Always returns SGX_SUCCESS |
| #[no_mangle] |
| pub extern "C" fn say_something(some_string: *const u8, some_len: usize) -> sgx_status_t { |
| |
| let str_slice = unsafe { slice::from_raw_parts(some_string, some_len) }; |
| let _ = io::stdout().write(str_slice); |
| |
| // A sample &'static string |
| let rust_raw_string = "This is a "; |
| // An array |
| let word:[u8;4] = [82, 117, 115, 116]; |
| // An vector |
| let word_vec:Vec<u8> = vec![32, 115, 116, 114, 105, 110, 103, 33]; |
| |
| // Construct a string from &'static string |
| let mut hello_string = String::from(rust_raw_string); |
| |
| // Iterate on word array |
| for c in word.iter() { |
| hello_string.push(*c as char); |
| } |
| |
| // Rust style convertion |
| hello_string += String::from_utf8(word_vec).expect("Invalid UTF-8") |
| .as_str(); |
| |
| // Ocall to normal world for output |
| println!("{}", &hello_string); |
| |
| let _ = backtrace::enable_backtrace("enclave.signed.so", PrintFormat::Short); |
| panic::catch_unwind(||{ |
| backtrace::__rust_begin_short_backtrace(||{ |
| test_backtrace_1() |
| }) |
| }).ok(); |
| |
| panic::catch_unwind(||{ |
| test_backtrace_2() |
| }).ok(); |
| |
| println!("\nsgx_backtrace sample code"); |
| let _ = sgx_backtrace::set_enclave_path("enclave.signed.so"); |
| foo(); |
| |
| sgx_status_t::SGX_SUCCESS |
| } |
| |
| #[inline(never)] |
| fn test_backtrace_1() { |
| test_panic(); |
| } |
| |
| #[inline(never)] |
| fn test_backtrace_2() { |
| test_panic(); |
| } |
| |
| #[inline(never)] |
| fn test_panic() -> !{ |
| panic!("enclave panicked."); |
| } |
| |
| #[inline(never)] |
| fn foo() { |
| bar() |
| } |
| |
| #[inline(never)] |
| fn bar() { |
| baz() |
| } |
| |
| #[inline(never)] |
| fn baz() { |
| println!("{:?}", Backtrace::new()); |
| raw() |
| } |
| |
| #[inline(never)] |
| fn raw() { |
| print() |
| } |
| |
| #[cfg(target_pointer_width = "32")] |
| const HEX_WIDTH: usize = 10; |
| #[cfg(target_pointer_width = "64")] |
| const HEX_WIDTH: usize = 20; |
| |
| #[inline(never)] |
| fn print() { |
| let mut cnt = 0; |
| sgx_backtrace::trace(|frame| { |
| let ip = frame.ip(); |
| print!("frame #{:<2} - {:#02$x}", cnt, ip as usize, HEX_WIDTH); |
| cnt += 1; |
| |
| let mut resolved = false; |
| sgx_backtrace::resolve(frame.ip(), |symbol| { |
| if !resolved { |
| resolved = true; |
| } else { |
| print!("{}", vec![" "; 7 + 2 + 3 + HEX_WIDTH].join("")); |
| } |
| |
| if let Some(name) = symbol.name() { |
| print!(" - {}", name); |
| } else { |
| print!(" - <unknown>"); |
| } |
| if let Some(file) = symbol.filename() { |
| if let Some(l) = symbol.lineno() { |
| print!("\n{:13}{:4$}@ {}:{}", "", "", file.display(), l, HEX_WIDTH); |
| } |
| } |
| println!(""); |
| }); |
| if !resolved { |
| println!(" - <no info>"); |
| } |
| true // keep going |
| }); |
| } |