use log::{debug, error, info, trace, warn, log, Level}; use std::io::Write as _; use std::fmt::Write as _; // --- tests --- fn get_password() -> String { "123456".to_string() } fn use_password(password: &String) { // ... } #[derive(Debug)] struct MyStruct1 { harmless: String, password: String, } impl std::fmt::Display for MyStruct1 { fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result { write!(f, "{} {}", self.harmless, self.password) } } #[derive(Debug)] struct MyStruct2 { harmless: String, password: String, } impl std::fmt::Display for MyStruct2 { fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result { write!(f, "{} [REDACTED]", self.harmless) // doesn't output password } } fn test_log(harmless: String, password: String, encrypted_password: String) { // logging macros debug!("message = {}", password); // $ Alert[rust/cleartext-logging] error!("message = {}", password); // $ Alert[rust/cleartext-logging] info!("message = {}", password); // $ Alert[rust/cleartext-logging] trace!("message = {}", password); // $ Alert[rust/cleartext-logging] warn!("message = {}", password); // $ Alert[rust/cleartext-logging] log!(Level::Error, "message = {}", password); // $ Alert[rust/cleartext-logging] // debug! macro, various formatting debug!("message"); debug!("message = {}", harmless); debug!("message = {}", password); // $ Alert[rust/cleartext-logging] debug!("message = {}", encrypted_password); debug!("message = {} {}", harmless, password); // $ Alert[rust/cleartext-logging] debug!("message = {harmless}"); debug!("message = {harmless} {}", password); // $ Alert[rust/cleartext-logging] debug!("message = {password}"); // $ Alert[rust/cleartext-logging] debug!("message = {password:?}"); // $ Alert[rust/cleartext-logging] debug!(target: "target", "message = {}", harmless); debug!(target: "target", "message = {}", password); // $ Alert[rust/cleartext-logging] debug!(target: &password, "message = {}", harmless); // $ Alert[rust/cleartext-logging] // log! macro, various formatting log!(Level::Error, "message = {}", harmless); log!(Level::Error, "message = {}", password); // $ Alert[rust/cleartext-logging] log!(target: "target", Level::Error, "message = {}", harmless); log!(target: "target", Level::Error, "message = {}", password); // $ Alert[rust/cleartext-logging] log!(target: &password, Level::Error, "message = {}", harmless); // $ Alert[rust/cleartext-logging] // structured logging error!(value = 1; "message = {}", harmless); error!(value = 1; "message = {}", password); // $ Alert[rust/cleartext-logging] error!(target: "target", value = 1; "message"); error!(target: "target", value = 1; "message = {}", password); // $ Alert[rust/cleartext-logging] error!(target: &password, value = 1; "message"); // $ Alert[rust/cleartext-logging] error!(value = 1; "message = {}", password); // $ Alert[rust/cleartext-logging] error!(value = password.as_str(); "message"); // $ MISSING: Alert[rust/cleartext-logging] error!(value:? = password.as_str(); "message"); // $ MISSING: Alert[rust/cleartext-logging] let value1 = 1; error!(value1; "message = {}", harmless); error!(value1; "message = {}", password); // $ Alert[rust/cleartext-logging] error!(target: "target", value1; "message"); error!(target: "target", value1; "message = {}", password); // $ Alert[rust/cleartext-logging] error!(target: &password, value1; "message"); // $ Alert[rust/cleartext-logging] error!(value1; "message = {}", password); // $ Alert[rust/cleartext-logging] let value2 = password.as_str(); error!(value2; "message"); // $ MISSING: Alert[rust/cleartext-logging] error!(value2:?; "message"); // $ MISSING: Alert[rust/cleartext-logging] // pre-formatted let m1 = &password; // $ Source=m1 info!("message = {}", m1); // $ Alert[rust/cleartext-logging]=m1 let m2 = "message = ".to_string() + &password; // $ Source=m2 info!("{}", m2); // $ Alert[rust/cleartext-logging]=m2 let m3 = format!("message = {}", password); // $ Source=m3 info!("{}", m3); // $ Alert[rust/cleartext-logging]=m3 let mut m4 = String::new(); write!(&mut m4, "message = {}", password); // $ MISSING: Source=m4 info!("{}", m4); // $ MISSING: Alert[rust/cleartext-logging]=m4 let mut m5 = String::new(); writeln!(&mut m5, "message = {}", password); // $ MISSING: Source=m5 info!("{}", m5); // $ MISSING: Alert[rust/cleartext-logging]=m5 let mut m6 = Vec::new(); write!(&mut m6, "message = {}", password); // $ MISSING: Source=m6 info!("{}", std::str::from_utf8(&m6).unwrap()); // $ MISSING: Alert[rust/cleartext-logging]=m6 unsafe { info!("{}", std::str::from_utf8_unchecked(&m6)); // $ MISSING: Alert[rust/cleartext-logging]=m6 } // logging with a call trace!("message = {}", get_password()); // $ Alert[rust/cleartext-logging] let str1 = "123456".to_string(); trace!("message = {}", &str1); // $ MISSING: Alert[rust/cleartext-logging] use_password(&str1); // (proves that `str1` is a password) trace!("message = {}", &str1); // $ MISSING: Alert[rust/cleartext-logging] let str2 = "123456".to_string(); trace!("message = {}", &str2); // logging from a tuple let t1 = (harmless, password); // $ Source=t1 trace!("message = {}", t1.0); trace!("message = {}", t1.1); // $ Alert[rust/cleartext-logging]=t1 trace!("message = {:?}", t1); // $ MISSING: Alert[rust/cleartext-logging]=t1 trace!("message = {:#?}", t1); // $ MISSING: Alert[rust/cleartext-logging]=t1 // logging from a struct let s1 = MyStruct1 { harmless: "foo".to_string(), password: "123456".to_string() }; // $ MISSING: Source=s1 warn!("message = {}", s1.harmless); warn!("message = {}", s1.password); // $ MISSING: Alert[rust/cleartext-logging] warn!("message = {}", s1); // $ MISSING: Alert[rust/cleartext-logging]=s1 warn!("message = {:?}", s1); // $ MISSING: Alert[rust/cleartext-logging]=s1 warn!("message = {:#?}", s1); // $ MISSING: Alert[rust/cleartext-logging]=s1 let s2 = MyStruct2 { harmless: "foo".to_string(), password: "123456".to_string() }; // $ MISSING: Source=s2 warn!("message = {}", s2.harmless); warn!("message = {}", s2.password); // $ MISSING: Alert[rust/cleartext-logging] warn!("message = {}", s2); // (this implementation does not output the password field) warn!("message = {:?}", s2); // $ MISSING: Alert[rust/cleartext-logging]=s2 warn!("message = {:#?}", s2); // $ MISSING: Alert[rust/cleartext-logging]=s2 } fn test_std(password: String, i: i32, opt_i: Option) { print!("message = {}\n", password); // $ Alert[rust/cleartext-logging] println!("message = {}", password); // $ Alert[rust/cleartext-logging] eprint!("message = {}\n", password); // $ Alert[rust/cleartext-logging] eprintln!("message = {}", password); // $ Alert[rust/cleartext-logging] match i { 1 => { panic!("message = {}", password); } // $ Alert[rust/cleartext-logging] 2 => { todo!("message = {}", password); } // $ Alert[rust/cleartext-logging] 3 => { unimplemented!("message = {}", password); } // $ Alert[rust/cleartext-logging] 4 => { unreachable!("message = {}", password); } // $ Alert[rust/cleartext-logging] 5 => { assert!(false, "message = {}", password); } // $ Alert[rust/cleartext-logging] 6 => { assert_eq!(1, 2, "message = {}", password); } // $ Alert[rust/cleartext-logging] 7 => { assert_ne!(1, 1, "message = {}", password); } // $ Alert[rust/cleartext-logging] 8 => { debug_assert!(false, "message = {}", password); } // $ Alert[rust/cleartext-logging] 9 => { debug_assert_eq!(1, 2, "message = {}", password); } // $ Alert[rust/cleartext-logging] 10 => { debug_assert_ne!(1, 1, "message = {}", password); } // $ Alert[rust/cleartext-logging] 11 => { _ = opt_i.expect(format!("message = {}", password).as_str()); } // $ Alert[rust/cleartext-logging] _ => {} } std::io::stdout().lock().write_fmt(format_args!("message = {}\n", password)); // $ MISSING: Alert[rust/cleartext-logging] std::io::stderr().lock().write_fmt(format_args!("message = {}\n", password)); // $ MISSING: Alert[rust/cleartext-logging] std::io::stdout().lock().write(format!("message = {}\n", password).as_bytes()); // $ Alert[rust/cleartext-logging] std::io::stdout().lock().write_all(format!("message = {}\n", password).as_bytes()); // $ Alert[rust/cleartext-logging] let mut out = std::io::stdout().lock(); out.write(format!("message = {}\n", password).as_bytes()); // $ Alert[rust/cleartext-logging] let mut err = std::io::stderr().lock(); err.write(format!("message = {}\n", password).as_bytes()); // $ Alert[rust/cleartext-logging] } fn main() { simple_logger::SimpleLogger::new().init().unwrap(); test_log("harmless".to_string(), "123456".to_string(), "[encrypted]".to_string()); test_std("123456".to_string(), 0, None); }