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Tests for autoenv (and fixes for bugs the tests found) (#2148)

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* add test basic_autoenv_vars_are_added

* Tests

* Entry and exit scripts

* Recursive set and overwrite

* Make sure that overwritten vals are restored

* Move tests to autoenv

* Move tests out of cli crate

* Tests help, apparently. Windows has issues

On windows, .nu-env is not applied immediately after running autoenv trust.
You have to cd out of the directory for it to work.

* Sort paths non-lexicographically

* Sibling dir test

* Revert "Sort paths non-lexicographically"

This reverts commit 72e4b856af.

* Rename test

* Change conditions

* Revert "Revert "Sort paths non-lexicographically""

This reverts commit 71606bc62f.

* Set vars as they are discovered

This means that if a parent directory is untrusted,
the variables in its child directories are still set properly.

* format

* Fix cleanup issues too

* Run commands in their separate functions

* Make everything into one large function like all the cool kids

* Refactoring

* fmt

* Debugging windows path issue

* Canonicalize

* Trim whitespace

* On windows, use echo nul instead of touch to create file in test

* Avoid cloning by using drain()
This commit is contained in:
Sam Hedin 2020-07-12 06:14:09 +02:00 committed by GitHub
parent bdef5d7d72
commit f3f40df4dd
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
5 changed files with 241 additions and 118 deletions
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4
crates/nu-cli/src/commands/autoenv.rs
View file

@ -22,10 +22,10 @@ impl Trusted {
}
pub fn file_is_trusted(nu_env_file: &PathBuf, content: &[u8]) -> Result<bool, ShellError> {
let contentdigest = Sha256::digest(&content).as_slice().to_vec();
let nufile = nu_env_file.to_str().unwrap_or("");
let nufile = std::fs::canonicalize(nu_env_file)?;
let trusted = read_trusted()?;
Ok(trusted.files.get(nufile) == Some(&contentdigest))
Ok(trusted.files.get(&nufile.to_string_lossy().to_string()) == Some(&contentdigest))
}
pub fn read_trusted() -> Result<Trusted, ShellError> {

2
crates/nu-cli/src/commands/autoenv_trust.rs
View file

@ -39,7 +39,7 @@ impl WholeStreamCommand for AutoenvTrust {
dir
}
_ => {
let mut dir = std::env::current_dir()?;
let mut dir = fs::canonicalize(std::env::current_dir()?)?;
dir.push(".nu-env");
dir
}

195
crates/nu-cli/src/env/directory_specific_environment.rs vendored
View file

@ -3,7 +3,6 @@ use commands::autoenv;
use indexmap::{IndexMap, IndexSet};
use nu_errors::ShellError;
use serde::Deserialize;
use std::cmp::Ordering::Less;
use std::env::*;
use std::process::Command;
@ -20,7 +19,7 @@ pub struct DirectorySpecificEnvironment {
pub last_seen_directory: PathBuf,
//If an environment var has been added from a .nu in a directory, we track it here so we can remove it when the user leaves the directory.
//If setting the var overwrote some value, we save the old value in an option so we can restore it later.
added_env_vars: IndexMap<PathBuf, IndexMap<EnvKey, Option<EnvVal>>>,
added_vars: IndexMap<PathBuf, IndexMap<EnvKey, Option<EnvVal>>>,
exitscripts: IndexMap<PathBuf, Vec<String>>,
}
@ -42,15 +41,12 @@ impl DirectorySpecificEnvironment {
};
DirectorySpecificEnvironment {
last_seen_directory: root_dir,
added_env_vars: IndexMap::new(),
added_vars: IndexMap::new(),
exitscripts: IndexMap::new(),
}
}
fn toml_if_directory_is_trusted(
&mut self,
nu_env_file: &PathBuf,
) -> Result<NuEnvDoc, ShellError> {
fn toml_if_trusted(&mut self, nu_env_file: &PathBuf) -> Result<NuEnvDoc, ShellError> {
let content = std::fs::read(&nu_env_file)?;
if autoenv::file_is_trusted(&nu_env_file, &content)? {
@ -72,134 +68,101 @@ impl DirectorySpecificEnvironment {
format!("{:?} is untrusted. Run 'autoenv trust {:?}' to trust it.\nThis needs to be done after each change to the file.", nu_env_file, nu_env_file.parent().unwrap_or_else(|| &Path::new("")))))
}
pub fn env_vars_to_add(&mut self) -> Result<IndexMap<EnvKey, EnvVal>, ShellError> {
pub fn maintain_autoenv(&mut self) -> Result<(), ShellError> {
let mut dir = current_dir()?;
let mut vars_to_add: IndexMap<EnvKey, EnvVal> = IndexMap::new();
//If we are in the last seen directory, do nothing
//If we are in a parent directory to last_seen_directory, just return without applying .nu-env in the parent directory - they were already applied earlier.
//parent.cmp(child) = Less
if self.last_seen_directory == dir {
return Ok(());
}
let mut added_keys = IndexSet::new();
//We note which directories we pass so we can clear unvisited dirs later.
let mut seen_directories = IndexSet::new();
//Add all .nu-envs until we reach a dir which we have already added, or we reached the root.
let mut popped = true;
while self.last_seen_directory.cmp(&dir) == Less && popped {
while !self.added_vars.contains_key(&dir) && popped {
let nu_env_file = dir.join(".nu-env");
if nu_env_file.exists() {
let nu_env_doc = self.toml_if_directory_is_trusted(&nu_env_file)?;
let nu_env_doc = self.toml_if_trusted(&nu_env_file)?;
//add regular variables from the [env section]
if let Some(env) = nu_env_doc.env {
for (env_key, env_val) in env {
self.add_key_if_appropriate(&mut vars_to_add, &dir, &env_key, &env_val);
self.maybe_add_key(&mut added_keys, &dir, &env_key, &env_val);
}
}
//Add variables that need to evaluate scripts to run, from [scriptvars] section
if let Some(scriptvars) = nu_env_doc.scriptvars {
for (env_key, dir_val_script) in scriptvars {
let command = if cfg!(target_os = "windows") {
Command::new("cmd")
.args(&["/C", dir_val_script.as_str()])
.output()?
} else {
Command::new("sh").arg("-c").arg(&dir_val_script).output()?
};
if command.stdout.is_empty() {
return Err(ShellError::untagged_runtime_error(format!(
"{:?} in {:?} did not return any output",
dir_val_script, dir
)));
}
let response =
std::str::from_utf8(&command.stdout[..command.stdout.len() - 1])
.or_else(|e| {
Err(ShellError::untagged_runtime_error(format!(
"Couldn't parse stdout from command {:?}: {:?}",
command, e
)))
})?;
self.add_key_if_appropriate(
&mut vars_to_add,
if let Some(sv) = nu_env_doc.scriptvars {
for (key, script) in sv {
self.maybe_add_key(
&mut added_keys,
&dir,
&env_key,
&response.to_string(),
&key,
value_from_script(&script)?.as_str(),
);
}
}
if let Some(entryscripts) = nu_env_doc.entryscripts {
for script in entryscripts {
if cfg!(target_os = "windows") {
Command::new("cmd")
.args(&["/C", script.as_str()])
.output()?;
} else {
Command::new("sh").arg("-c").arg(script).output()?;
}
if let Some(es) = nu_env_doc.entryscripts {
for s in es {
run(s.as_str())?;
}
}
if let Some(exitscripts) = nu_env_doc.exitscripts {
self.exitscripts.insert(dir.clone(), exitscripts);
if let Some(es) = nu_env_doc.exitscripts {
self.exitscripts.insert(dir.clone(), es);
}
}
seen_directories.insert(dir.clone());
popped = dir.pop();
}
Ok(vars_to_add)
//Time to clear out vars set by directories that we have left.
let mut new_vars = IndexMap::new();
for (dir, dirmap) in self.added_vars.drain(..) {
if seen_directories.contains(&dir) {
new_vars.insert(dir, dirmap);
} else {
for (k, v) in dirmap {
if let Some(v) = v {
std::env::set_var(k, v);
} else {
std::env::remove_var(k);
}
}
if let Some(es) = self.exitscripts.get(&dir) {
for s in es {
run(s.as_str())?;
}
}
}
}
self.added_vars = new_vars;
self.last_seen_directory = current_dir()?;
Ok(())
}
pub fn add_key_if_appropriate(
pub fn maybe_add_key(
&mut self,
vars_to_add: &mut IndexMap<EnvKey, EnvVal>,
seen_vars: &mut IndexSet<EnvKey>,
dir: &PathBuf,
env_key: &str,
env_val: &str,
key: &str,
val: &str,
) {
//This condition is to make sure variables in parent directories don't overwrite variables set by subdirectories.
if !vars_to_add.contains_key(env_key) {
vars_to_add.insert(env_key.to_string(), OsString::from(env_val));
self.added_env_vars
if !seen_vars.contains(key) {
seen_vars.insert(key.to_string());
self.added_vars
.entry(dir.clone())
.or_insert(IndexMap::new())
.insert(env_key.to_string(), var_os(env_key));
.insert(key.to_string(), var_os(key));
std::env::set_var(key, val);
}
}
pub fn cleanup_after_dir_exit(
&mut self,
) -> Result<IndexMap<EnvKey, Option<EnvVal>>, ShellError> {
let current_dir = current_dir()?;
let mut vars_to_cleanup = IndexMap::new();
//If we are in the same directory as last_seen, or a subdirectory to it, do nothing
//If we are in a subdirectory to last seen, do nothing
//If we are in a parent directory to last seen, exit .nu-envs from last seen to parent and restore old vals
let mut dir = self.last_seen_directory.clone();
let mut popped = true;
while current_dir.cmp(&dir) == Less && popped {
if let Some(vars_added_by_this_directory) = self.added_env_vars.get(&dir) {
for (k, v) in vars_added_by_this_directory {
vars_to_cleanup.insert(k.clone(), v.clone());
}
self.added_env_vars.remove(&dir);
}
if let Some(scripts) = self.exitscripts.get(&dir) {
for script in scripts {
if cfg!(target_os = "windows") {
Command::new("cmd")
.args(&["/C", script.as_str()])
.output()?;
} else {
Command::new("sh").arg("-c").arg(script).output()?;
}
}
}
popped = dir.pop();
}
Ok(vars_to_cleanup)
}
// If the user recently ran autoenv untrust on a file, we clear the environment variables it set and make sure to not run any possible exitscripts.
pub fn clear_recently_untrusted_file(&mut self) -> Result<(), ShellError> {
// Figure out which file was untrusted
@ -213,7 +176,7 @@ impl DirectorySpecificEnvironment {
// We figure out which file(s) the user untrusted by taking the set difference of current trusted files in .config/nu/nu-env.toml and the files tracked by self.added_env_vars
// If a file is in self.added_env_vars but not in nu-env.toml, it was just untrusted.
let untrusted_files: IndexSet<PathBuf> = self
.added_env_vars
.added_vars
.iter()
.filter_map(|(path, _)| {
if !current_trusted_files.contains(path) {
@ -224,15 +187,45 @@ impl DirectorySpecificEnvironment {
.collect();
for path in untrusted_files {
if let Some(added_keys) = self.added_env_vars.get(&path) {
if let Some(added_keys) = self.added_vars.get(&path) {
for (key, _) in added_keys {
remove_var(key);
}
}
self.exitscripts.remove(&path);
self.added_env_vars.remove(&path);
self.added_vars.remove(&path);
}
Ok(())
}
}
fn run(cmd: &str) -> Result<(), ShellError> {
if cfg!(target_os = "windows") {
Command::new("cmd").args(&["/C", cmd]).output()?
} else {
Command::new("sh").arg("-c").arg(&cmd).output()?
};
Ok(())
}
fn value_from_script(cmd: &str) -> Result<String, ShellError> {
let command = if cfg!(target_os = "windows") {
Command::new("cmd").args(&["/C", cmd]).output()?
} else {
Command::new("sh").arg("-c").arg(&cmd).output()?
};
if command.stdout.is_empty() {
return Err(ShellError::untagged_runtime_error(format!(
"{:?} did not return any output",
cmd
)));
}
let response = std::str::from_utf8(&command.stdout[..command.stdout.len()]).or_else(|e| {
Err(ShellError::untagged_runtime_error(format!(
"Couldn't parse stdout from command {:?}: {:?}",
command, e
)))
})?;
Ok(response.trim().to_string())
}

15
crates/nu-cli/src/env/environment.rs vendored
View file

@ -61,23 +61,10 @@ impl Environment {
}
pub fn autoenv(&mut self, reload_trusted: bool) -> Result<(), ShellError> {
for (k, v) in self.autoenv.env_vars_to_add()? {
set_var(&k, OsString::from(v.to_string_lossy().to_string()));
}
for (k, v) in self.autoenv.cleanup_after_dir_exit()? {
if let Some(v) = v {
set_var(k, v);
} else {
remove_var(k);
}
}
self.autoenv.maintain_autoenv()?;
if reload_trusted {
self.autoenv.clear_recently_untrusted_file()?;
}
self.autoenv.last_seen_directory = current_dir()?;
Ok(())
}

143
tests/shell/pipeline/commands/internal.rs
View file

@ -1,4 +1,5 @@
use nu_test_support::fs::Stub::EmptyFile;
use nu_test_support::fs::Stub::FileWithContent;
use nu_test_support::fs::Stub::FileWithContentToBeTrimmed;
use nu_test_support::nu;
use nu_test_support::pipeline;
@ -36,6 +37,148 @@ fn takes_rows_of_nu_value_strings_and_pipes_it_to_stdin_of_external() {
})
}
#[test]
fn autoenv() {
Playground::setup("autoenv_test", |dirs, sandbox| {
sandbox.mkdir("foo/bar");
sandbox.mkdir("foob");
let scriptfile = if cfg!(target_os = "windows") {
FileWithContent(
".nu-env",
r#"[env]
testkey = "testvalue"
[scriptvars]
myscript = "echo myval"
[scripts]
entryscripts = ["echo nul > hello.txt"]
exitscripts = ["echo nul > bye.txt"]"#,
)
} else {
FileWithContent(
".nu-env",
r#"[env]
testkey = "testvalue"
[scriptvars]
myscript = "echo myval"
[scripts]
entryscripts = ["touch hello.txt"]
exitscripts = ["touch bye.txt"]"#,
)
};
sandbox.with_files(vec![
scriptfile,
FileWithContent(
"foo/.nu-env",
r#"[env]
overwrite_me = "set_in_foo"
fookey = "fooval""#,
),
FileWithContent(
"foo/bar/.nu-env",
r#"[env]
overwrite_me = "set_in_bar""#,
),
]);
//Make sure basic keys are set
let actual = nu!(
cwd: dirs.test(),
r#"autoenv trust
echo $nu.env.testkey"#
);
assert!(actual.out.ends_with("testvalue"));
//Backing out of the directory should unset the keys
let actual = nu!(
cwd: dirs.test(),
r#"cd ..
echo $nu.env.testkey"#
);
assert!(!actual.out.ends_with("testvalue"));
// Make sure script keys are set
let actual = nu!(
cwd: dirs.test(),
r#"echo $nu.env.myscript"#
);
assert!(actual.out.ends_with("myval"));
//Going to sibling directory without passing parent should work.
let actual = nu!(
cwd: dirs.test(),
r#"autoenv trust foo
cd foob
cd ../foo
echo $nu.env.fookey
cd .."#
);
assert!(actual.out.ends_with("fooval"));
//Going to sibling directory should unset keys
let actual = nu!(
cwd: dirs.test(),
r#"cd foo
cd ../foob
echo $nu.env.fookey
cd .."#
);
assert!(!actual.out.ends_with("fooval"));
// Make sure entry scripts are run
let actual = nu!(
cwd: dirs.test(),
r#"ls | where name == "hello.txt" | get name"#
);
assert!(actual.out.contains("hello.txt"));
// Make sure exit scripts are run
let actual = nu!(
cwd: dirs.test(),
r#"cd ..
ls | where name == "bye.txt" | get name"#
);
assert!(actual.out.contains("bye.txt"));
//Subdirectories should overwrite the values of parent directories.
let actual = nu!(
cwd: dirs.test(),
r#"autoenv trust foo
cd foo/bar
autoenv trust
echo $nu.env.overwrite_me"#
);
assert!(actual.out.ends_with("set_in_bar"));
//Variables set in parent directories should be set even if you directly cd to a subdir
let actual = nu!(
cwd: dirs.test(),
r#"autoenv trust foo
cd foo/bar
autoenv trust
echo $nu.env.fookey"#
);
assert!(actual.out.ends_with("fooval"));
//Make sure that overwritten values are restored.
//By deleting foo/.nu-env, we make sure that the value is actually restored and not just set again by autoenv when we re-visit foo.
let actual = nu!(
cwd: dirs.test(),
r#"cd foo
cd bar
rm ../.nu-env
cd ..
echo $nu.env.overwrite_me"#
);
assert!(actual.out.ends_with("set_in_foo"))
})
}
#[test]
fn proper_it_expansion() {
Playground::setup("ls_test_1", |dirs, sandbox| {