use casr::util;
use libcasr::{
exception::Exception, init_ignored_frames, java::*, report::CrashReport, stacktrace::*,
};
use anyhow::{Result, bail};
use clap::{Arg, ArgAction, ArgGroup};
use regex::Regex;
use std::path::PathBuf;
use std::process::Command;
use walkdir::WalkDir;
fn main() -> Result<()> {
let matches = clap::Command::new("casr-java")
.version(clap::crate_version!())
.about("Create CASR reports (.casrep) from java 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("source-dirs")
.long("source-dirs")
.env("CASR_SOURCE_DIRS")
.action(ArgAction::Set)
.num_args(1..)
.value_delimiter(':')
.value_parser(clap::value_parser!(PathBuf))
.value_name("DIR")
.help("Paths to directories with Java source files (list separated by ':' for env)"),
)
.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!("java", "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 java_cmd = Command::new(argv[0]);
if let Some(ld_preload) = util::get_ld_preload(&matches) {
java_cmd.env("LD_PRELOAD", ld_preload);
}
if let Some(ref file) = stdin_file {
java_cmd.stdin(std::fs::File::open(file)?);
}
if argv.len() > 1 {
java_cmd.args(&argv[1..]);
}
let java_result = util::get_output(&mut java_cmd, timeout, true)?;
let java_stderr = String::from_utf8_lossy(&java_result.stderr);
let mut report = CrashReport::new();
if let Some(pos) = argv.iter().position(|x| {
x.starts_with("-cp")
|| x.starts_with("--cp")
|| x.starts_with("-class-path")
|| x.starts_with("--classpath")
}) {
report.executable_path = if let Some(classes) = argv[pos].split('=').nth(1) {
classes
} else {
let Some(classes) = argv.get(pos + 1) else {
bail!("Class path is empty.");
};
classes
}
.to_string();
}
report.proc_cmdline = argv.join(" ");
let _ = report.add_os_info();
let _ = report.add_proc_environ();
let java_stderr_list: Vec<String> = java_stderr.split('\n').map(|l| l.to_string()).collect();
let re = Regex::new(r"Exception in thread .*? |== Java Exception: ").unwrap();
if let Some(start) = java_stderr_list.iter().position(|x| re.is_match(x)) {
report.java_report = java_stderr_list[start..]
.iter()
.map(|line| line.replace('\t', " "))
.collect();
if let Some(end) = report
.java_report
.iter()
.rposition(|x| x.starts_with("== libFuzzer crashing input =="))
{
report.java_report.drain(end..);
}
report.java_report.retain(|x| !x.is_empty());
let report_str = report.java_report.join("\n");
report.stacktrace = JavaStacktrace::extract_stacktrace(&report_str)?;
if let Some(exception) = JavaException::parse_exception(&report_str) {
report.execution_class = exception;
}
} else {
return util::call_casr_san(&matches, &argv, "casr-java");
}
let stacktrace = JavaStacktrace::parse_stacktrace(&report.stacktrace)?;
if let Ok(crash_line) = stacktrace.crash_line() {
report.crashline = crash_line.to_string();
if let CrashLine::Source(mut debug) = crash_line {
let source_dirs = if let Some(sources) = matches.get_many::<PathBuf>("source-dirs") {
sources.collect()
} else {
Vec::new()
};
if let Some(file) = source_dirs.iter().find_map(|dir| {
WalkDir::new(dir)
.into_iter()
.flatten()
.map(|e| e.into_path())
.filter(|e| e.is_file())
.filter(|e| e.extension().is_some() && e.extension().unwrap() == "java")
.find(|x| {
x.file_name()
.unwrap()
.eq(PathBuf::from(&debug.file).file_name().unwrap())
})
}) {
debug.file = file.display().to_string();
}
if 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)
}