use casr::util;
use libcasr::{
exception::Exception, init_ignored_frames, js::*, report::CrashReport, stacktrace::*,
};
use anyhow::{Result, bail};
use clap::{Arg, ArgAction, ArgGroup};
use regex::Regex;
use std::path::{Path, PathBuf};
use std::process::Command;
fn main() -> Result<()> {
let matches = clap::Command::new("casr-js")
.version(clap::crate_version!())
.about("Create CASR reports (.casrep) from JavaScript crash reports")
.term_width(90)
.arg(
Arg::new("output")
.short('o')
.long("output")
.action(ArgAction::Set)
.value_parser(clap::value_parser!(PathBuf))
.value_name("REPORT")
.help(
"Path to save report. Path can be a directory, then report name is generated",
),
)
.arg(
Arg::new("stdout")
.action(ArgAction::SetTrue)
.long("stdout")
.help("Print CASR report to stdout"),
)
.group(
ArgGroup::new("out")
.args(["stdout", "output"])
.required(true),
)
.arg(
Arg::new("stdin")
.long("stdin")
.action(ArgAction::Set)
.value_parser(clap::value_parser!(PathBuf))
.value_name("FILE")
.help("Stdin file for program"),
)
.arg(
Arg::new("timeout")
.short('t')
.long("timeout")
.action(ArgAction::Set)
.default_value("0")
.value_name("SECONDS")
.help("Timeout (in seconds) for target execution, 0 value means that timeout is disabled")
.value_parser(clap::value_parser!(u64))
)
.arg(
Arg::new("ignore")
.long("ignore")
.action(ArgAction::Set)
.value_parser(clap::value_parser!(PathBuf))
.value_name("FILE")
.help("File with regular expressions for functions and file paths that should be ignored"),
)
.arg(
Arg::new("strip-path")
.long("strip-path")
.env("CASR_STRIP_PATH")
.action(ArgAction::Set)
.value_name("PREFIX")
.help("Path prefix to strip from stacktrace and crash line"),
)
.arg(
Arg::new("ld-preload")
.long("ld-preload")
.env("CASR_PRELOAD")
.action(ArgAction::Set)
.num_args(1..)
.value_name("LIBS")
.value_parser(clap::value_parser!(String))
.help("Set LD_PRELOAD for the target program without disrupting the CASR process itself (both ` ` and `:` are valid delimiter)")
)
.arg(
Arg::new("ARGS")
.action(ArgAction::Set)
.num_args(1..)
.last(true)
.required(true)
.help("Add \"-- <path> <arguments>\" to run"),
)
.get_matches();
init_ignored_frames!("js", "cpp");
if let Some(path) = matches.get_one::<PathBuf>("ignore") {
util::add_custom_ignored_frames(path)?;
}
let argv: Vec<&str> = if let Some(argvs) = matches.get_many::<String>("ARGS") {
argvs.map(|s| s.as_str()).collect()
} else {
bail!("Wrong arguments for starting program");
};
let stdin_file = util::stdin_from_matches(&matches)?;
let timeout = *matches.get_one::<u64>("timeout").unwrap();
let mut js_cmd = Command::new(argv[0]);
if let Some(ld_preload) = util::get_ld_preload(&matches) {
js_cmd.env("LD_PRELOAD", ld_preload);
}
if let Some(ref file) = stdin_file {
js_cmd.stdin(std::fs::File::open(file)?);
}
if argv.len() > 1 {
js_cmd.args(&argv[1..]);
}
let js_result = util::get_output(&mut js_cmd, timeout, true)?;
let js_stderr = String::from_utf8_lossy(&js_result.stderr);
let mut report = CrashReport::new();
report.executable_path = argv[0].to_string();
let mut path_to_tool = PathBuf::new();
path_to_tool.push(argv[0]);
if argv.len() > 1 {
let fpath = Path::new(argv[0]);
if let Some(fname) = fpath.file_name() {
path_to_tool = if fname == fpath.as_os_str() {
let Ok(full_path_to_tool) = which::which(fname) else {
bail!("{} is not found in PATH", argv[0]);
};
full_path_to_tool
} else {
fpath.to_path_buf()
};
if !path_to_tool.exists() {
bail!("Could not find the tool in the specified path {}", argv[0]);
}
let fname = fname.to_string_lossy();
if (fname == "node" || fname == "jsfuzz") && argv[1].ends_with(".js") {
report.executable_path = argv[1].to_string();
} else if argv.len() > 2
&& fname == "npx"
&& argv[1] == "jazzer"
&& argv[2].ends_with(".js")
{
report.executable_path = argv[2].to_string();
}
}
}
report.proc_cmdline = argv.join(" ");
let _ = report.add_os_info();
let _ = report.add_proc_environ();
let js_stderr_list: Vec<String> = js_stderr.split('\n').map(|l| l.to_string()).collect();
let re = Regex::new(r"^(?:.*Error:(?:\s+.*)?|Thrown at:)$").unwrap();
if let Some(start) = js_stderr_list.iter().position(|x| re.is_match(x)) {
report.js_report = js_stderr_list[start..].to_vec();
report
.js_report
.retain(|x| !x.is_empty() && (x.trim().starts_with("at") || x.contains("Error:")));
let report_str = report.js_report.join("\n");
report.stacktrace = JsStacktrace::extract_stacktrace(&report_str)?;
if let Some(exception) = JsException::parse_exception(&report.js_report[0]) {
report.execution_class = exception;
}
} else {
let mut modified_argv = argv.clone();
modified_argv[0] = path_to_tool.to_str().unwrap_or(argv[0]);
return util::call_casr_san(&matches, &modified_argv, "casr-js");
}
let stacktrace = JsStacktrace::parse_stacktrace(&report.stacktrace)?;
if let Ok(crash_line) = stacktrace.crash_line() {
report.crashline = crash_line.to_string();
if let CrashLine::Source(debug) = crash_line
&& let Some(sources) = CrashReport::sources(&debug)
{
report.source = sources;
}
}
if let Some(path) = matches.get_one::<String>("strip-path") {
util::strip_paths(&mut report, &stacktrace, path);
}
util::output_report(&report, &matches, &argv)
}