mirror of
https://github.com/uutils/coreutils
synced 2024-12-12 14:22:41 +00:00
feature: env argv0 overwrite (unix only)
This commit is contained in:
Ulrich Hornung
Ben Wiederhake
parent
56e59da558
commit
eca8130a4a
2 changed files with 297 additions and 18 deletions
82
src/uu/env/src/env.rs
vendored
82
src/uu/env/src/env.rs
vendored
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@ -27,7 +27,7 @@ use std::io::{self, Write};
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use std::ops::Deref;
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#[cfg(unix)]
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use std::os::unix::process::ExitStatusExt;
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use std::os::unix::process::{CommandExt, ExitStatusExt};
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use std::process::{self};
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use uucore::display::Quotable;
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use uucore::error::{ExitCode, UError, UResult, USimpleError, UUsageError};
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@ -48,6 +48,7 @@ struct Options<'a> {
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unsets: Vec<&'a OsStr>,
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sets: Vec<(Cow<'a, OsStr>, Cow<'a, OsStr>)>,
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program: Vec<&'a OsStr>,
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argv0: Option<&'a OsStr>,
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}
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// print name=value env pairs on screen
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@ -173,7 +174,7 @@ pub fn uu_app() -> Command {
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Arg::new("debug")
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.short('v')
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.long("debug")
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.action(ArgAction::SetTrue)
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.action(ArgAction::Count)
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.help("print verbose information for each processing step"),
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)
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.arg(
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@ -184,6 +185,16 @@ pub fn uu_app() -> Command {
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.action(ArgAction::Set)
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.value_parser(ValueParser::os_string())
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.help("process and split S into separate arguments; used to pass multiple arguments on shebang lines")
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).arg(
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Arg::new("argv0")
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.overrides_with("argv0")
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.short('a')
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.long("argv0")
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.value_name("a")
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.action(ArgAction::Set)
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.value_parser(ValueParser::os_string())
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.help("Override the zeroth argument passed to the command being executed.\
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Without this option a default value of `command` is used.")
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)
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.arg(
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Arg::new("vars")
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@ -248,6 +259,7 @@ fn check_and_handle_string_args(
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#[derive(Default)]
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struct EnvAppData {
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do_debug_printing: bool,
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do_input_debug_printing: Option<bool>,
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had_string_argument: bool,
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}
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@ -273,14 +285,19 @@ impl EnvAppData {
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b if check_and_handle_string_args(b, "-S", &mut all_args, None)? => {
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self.had_string_argument = true;
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}
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b if check_and_handle_string_args(b, "-vS", &mut all_args, None)? => {
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self.do_debug_printing = true;
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self.had_string_argument = true;
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}
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b if check_and_handle_string_args(
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b,
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"-vS",
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"-vvS",
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&mut all_args,
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Some(original_args),
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)? =>
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{
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self.do_debug_printing = true;
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self.do_input_debug_printing = Some(false); // already done
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self.had_string_argument = true;
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}
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_ => {
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@ -323,10 +340,15 @@ impl EnvAppData {
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fn run_env(&mut self, original_args: impl uucore::Args) -> UResult<()> {
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let (original_args, matches) = self.parse_arguments(original_args)?;
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let did_debug_printing_before = self.do_debug_printing; // could have been done already as part of the "-vS" string parsing
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let do_debug_printing = self.do_debug_printing || matches.get_flag("debug");
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if do_debug_printing && !did_debug_printing_before {
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debug_print_args(&original_args);
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self.do_debug_printing = self.do_debug_printing || (0 != matches.get_count("debug"));
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self.do_input_debug_printing = self
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.do_input_debug_printing
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.or(Some(matches.get_count("debug") >= 2));
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if let Some(value) = self.do_input_debug_printing {
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if value {
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debug_print_args(&original_args);
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self.do_input_debug_printing = Some(false);
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}
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}
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let mut opts = make_options(&matches)?;
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@ -349,7 +371,7 @@ impl EnvAppData {
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// no program provided, so just dump all env vars to stdout
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print_env(opts.line_ending);
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} else {
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return self.run_program(opts, do_debug_printing);
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return self.run_program(opts, self.do_debug_printing);
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}
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Ok(())
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@ -361,14 +383,11 @@ impl EnvAppData {
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do_debug_printing: bool,
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) -> Result<(), Box<dyn UError>> {
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let prog = Cow::from(opts.program[0]);
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#[cfg(unix)]
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let mut arg0 = prog.clone();
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#[cfg(not(unix))]
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let arg0 = prog.clone();
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let args = &opts.program[1..];
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if do_debug_printing {
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eprintln!("executable: {}", prog.quote());
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for (i, arg) in args.iter().enumerate() {
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eprintln!("arg[{}]: {}", i, arg.quote());
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}
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}
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// we need to execute a command
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/*
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* On Unix-like systems Command::status either ends up calling either fork or posix_spawnp
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@ -376,7 +395,36 @@ impl EnvAppData {
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* standard library contains many checks and fail-safes to ensure the process ends up being
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* created. This is much simpler than dealing with the hassles of calling execvp directly.
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*/
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match process::Command::new(&*prog).args(args).status() {
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let mut cmd = process::Command::new(&*prog);
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cmd.args(args);
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if let Some(_argv0) = opts.argv0 {
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#[cfg(unix)]
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{
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cmd.arg0(_argv0);
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arg0 = Cow::Borrowed(_argv0);
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if do_debug_printing {
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eprintln!("argv0: {}", arg0.quote());
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}
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}
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#[cfg(not(unix))]
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return Err(USimpleError::new(
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2,
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"--argv0 is currently not supported on this platform",
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));
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}
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if do_debug_printing {
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eprintln!("executing: {}", prog.maybe_quote());
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let arg_prefix = " arg";
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eprintln!("{}[{}]= {}", arg_prefix, 0, arg0.quote());
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for (i, arg) in args.iter().enumerate() {
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eprintln!("{}[{}]= {}", arg_prefix, i + 1, arg.quote());
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}
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}
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match cmd.status() {
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Ok(exit) if !exit.success() => {
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#[cfg(unix)]
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if let Some(exit_code) = exit.code() {
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@ -443,6 +491,7 @@ fn make_options(matches: &clap::ArgMatches) -> UResult<Options<'_>> {
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Some(v) => v.map(|s| s.as_os_str()).collect(),
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None => Vec::with_capacity(0),
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};
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let argv0 = matches.get_one::<OsString>("argv0").map(|s| s.as_os_str());
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let mut opts = Options {
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ignore_env,
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@ -452,6 +501,7 @@ fn make_options(matches: &clap::ArgMatches) -> UResult<Options<'_>> {
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unsets,
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sets: vec![],
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program: vec![],
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argv0,
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};
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let mut begin_prog_opts = false;
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@ -8,6 +8,7 @@
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use crate::common::util::expected_result;
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use crate::common::util::TestScenario;
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use ::env::native_int_str::{Convert, NCvt};
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use regex::Regex;
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use std::env;
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use std::path::Path;
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use tempfile::tempdir;
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@ -55,6 +56,99 @@ fn test_if_windows_batch_files_can_be_executed() {
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assert!(result.stdout_str().contains("Hello Windows World!"));
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}
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#[test]
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fn test_debug_1() {
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let ts = TestScenario::new(util_name!());
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let result = ts
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.ucmd()
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.arg("-v")
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.arg(&ts.bin_path)
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.args(&["echo", "hello"])
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.succeeds();
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result.stderr_matches(
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&Regex::new(concat!(
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r"executing: [^\n]+(\/|\\)coreutils(\.exe)?\n",
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r" arg\[0\]= '[^\n]+(\/|\\)coreutils(\.exe)?'\n",
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r" arg\[1\]= 'echo'\n",
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r" arg\[2\]= 'hello'"
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))
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.unwrap(),
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);
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}
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#[test]
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fn test_debug_2() {
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let ts = TestScenario::new(util_name!());
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let result = ts
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.ucmd()
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.arg("-vv")
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.arg(ts.bin_path)
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.args(&["echo", "hello2"])
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.succeeds();
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result.stderr_matches(
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&Regex::new(concat!(
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r"input args:\n",
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r"arg\[0\]: 'env'\n",
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r"arg\[1\]: '-vv'\n",
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r"arg\[2\]: '[^\n]+(\/|\\)coreutils(.exe)?'\n",
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r"arg\[3\]: 'echo'\n",
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r"arg\[4\]: 'hello2'\n",
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r"executing: [^\n]+(\/|\\)coreutils(.exe)?\n",
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r" arg\[0\]= '[^\n]+(\/|\\)coreutils(.exe)?'\n",
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r" arg\[1\]= 'echo'\n",
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r" arg\[2\]= 'hello2'"
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))
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.unwrap(),
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);
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}
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#[test]
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fn test_debug1_part_of_string_arg() {
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let ts = TestScenario::new(util_name!());
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let result = ts
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.ucmd()
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.arg("-vS FOO=BAR")
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.arg(ts.bin_path)
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.args(&["echo", "hello1"])
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.succeeds();
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result.stderr_matches(
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&Regex::new(concat!(
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r"executing: [^\n]+(\/|\\)coreutils(\.exe)?\n",
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r" arg\[0\]= '[^\n]+(\/|\\)coreutils(\.exe)?'\n",
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r" arg\[1\]= 'echo'\n",
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r" arg\[2\]= 'hello1'"
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))
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.unwrap(),
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);
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}
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#[test]
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fn test_debug2_part_of_string_arg() {
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let ts = TestScenario::new(util_name!());
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let result = ts
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.ucmd()
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.arg("-vvS FOO=BAR")
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.arg(ts.bin_path)
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.args(&["echo", "hello2"])
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.succeeds();
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result.stderr_matches(
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&Regex::new(concat!(
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r"input args:\n",
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r"arg\[0\]: 'env'\n",
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r"arg\[1\]: '-vvS FOO=BAR'\n",
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r"arg\[2\]: '[^\n]+(\/|\\)coreutils(.exe)?'\n",
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r"arg\[3\]: 'echo'\n",
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r"arg\[4\]: 'hello2'\n",
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r"executing: [^\n]+(\/|\\)coreutils(.exe)?\n",
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r" arg\[0\]= '[^\n]+(\/|\\)coreutils(.exe)?'\n",
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r" arg\[1\]= 'echo'\n",
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r" arg\[2\]= 'hello2'"
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))
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.unwrap(),
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);
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}
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#[test]
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fn test_file_option() {
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let out = new_ucmd!()
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@ -345,10 +439,15 @@ fn test_split_string_into_args_debug_output_whitespace_handling() {
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let out = scene
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.ucmd()
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.args(&["-vS printf x%sx\\n A \t B \x0B\x0C\r\n"])
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.args(&["-vvS printf x%sx\\n A \t B \x0B\x0C\r\n"])
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.succeeds();
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assert_eq!(out.stdout_str(), "xAx\nxBx\n");
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assert_eq!(out.stderr_str(), "input args:\narg[0]: 'env'\narg[1]: $'-vS printf x%sx\\\\n A \\t B \\x0B\\x0C\\r\\n'\nexecutable: 'printf'\narg[0]: $'x%sx\\n'\narg[1]: 'A'\narg[2]: 'B'\n");
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assert_eq!(
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out.stderr_str(),
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"input args:\narg[0]: 'env'\narg[1]: $\
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'-vvS printf x%sx\\\\n A \\t B \\x0B\\x0C\\r\\n'\nexecuting: printf\
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\n arg[0]= 'printf'\n arg[1]= $'x%sx\\n'\n arg[2]= 'A'\n arg[3]= 'B'\n"
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);
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}
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// FixMe: This test fails on MACOS:
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@ -564,6 +663,136 @@ fn test_env_with_gnu_reference_empty_executable_double_quotes() {
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.stderr_is("env: '': No such file or directory\n");
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}
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#[test]
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#[cfg(unix)]
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fn test_env_overwrite_arg0() {
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let ts = TestScenario::new(util_name!());
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let bin = ts.bin_path.clone();
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ts.ucmd()
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.args(&["--argv0", "echo"])
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.arg(&bin)
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.args(&["-n", "hello", "world!"])
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.succeeds()
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.stdout_is("hello world!")
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.stderr_is("");
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ts.ucmd()
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.args(&["-a", "dirname"])
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.arg(bin)
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.args(&["aa/bb/cc"])
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.succeeds()
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.stdout_is("aa/bb\n")
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.stderr_is("");
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}
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#[test]
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#[cfg(unix)]
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fn test_env_arg_argv0_overwrite() {
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let ts = TestScenario::new(util_name!());
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let bin = ts.bin_path.clone();
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// overwrite --argv0 by --argv0
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ts.ucmd()
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.args(&["--argv0", "dirname"])
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.args(&["--argv0", "echo"])
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.arg(&bin)
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.args(&["aa/bb/cc"])
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.succeeds()
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.stdout_is("aa/bb/cc\n")
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.stderr_is("");
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// overwrite -a by -a
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ts.ucmd()
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.args(&["-a", "dirname"])
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.args(&["-a", "echo"])
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.arg(&bin)
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.args(&["aa/bb/cc"])
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.succeeds()
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.stdout_is("aa/bb/cc\n")
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.stderr_is("");
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// overwrite --argv0 by -a
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ts.ucmd()
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.args(&["--argv0", "dirname"])
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.args(&["-a", "echo"])
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.arg(&bin)
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.args(&["aa/bb/cc"])
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.succeeds()
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.stdout_is("aa/bb/cc\n")
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.stderr_is("");
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// overwrite -a by --argv0
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ts.ucmd()
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.args(&["-a", "dirname"])
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.args(&["--argv0", "echo"])
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.arg(&bin)
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.args(&["aa/bb/cc"])
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.succeeds()
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.stdout_is("aa/bb/cc\n")
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.stderr_is("");
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}
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#[test]
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#[cfg(unix)]
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fn test_env_arg_argv0_overwrite_mixed_with_string_args() {
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let ts = TestScenario::new(util_name!());
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let bin = ts.bin_path.clone();
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// string arg following normal
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ts.ucmd()
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.args(&["-S--argv0 dirname"])
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.args(&["--argv0", "echo"])
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.arg(&bin)
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.args(&["aa/bb/cc"])
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.succeeds()
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.stdout_is("aa/bb/cc\n")
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.stderr_is("");
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// normal following string arg
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ts.ucmd()
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.args(&["-a", "dirname"])
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.args(&["-S-a echo"])
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.arg(&bin)
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.args(&["aa/bb/cc"])
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.succeeds()
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.stdout_is("aa/bb/cc\n")
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.stderr_is("");
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// one large string arg
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ts.ucmd()
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.args(&["-S--argv0 dirname -a echo"])
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.arg(&bin)
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.args(&["aa/bb/cc"])
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.succeeds()
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.stdout_is("aa/bb/cc\n")
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.stderr_is("");
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// two string args
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ts.ucmd()
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.args(&["-S-a dirname"])
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.args(&["-S--argv0 echo"])
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.arg(&bin)
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.args(&["aa/bb/cc"])
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.succeeds()
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.stdout_is("aa/bb/cc\n")
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.stderr_is("");
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// three args: normal, string, normal
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ts.ucmd()
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.args(&["-a", "sleep"])
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.args(&["-S-a dirname"])
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.args(&["-a", "echo"])
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.arg(&bin)
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.args(&["aa/bb/cc"])
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.succeeds()
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.stdout_is("aa/bb/cc\n")
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.stderr_is("");
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}
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#[cfg(test)]
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mod tests_split_iterator {
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