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Fix possibility of infinite loop

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This commit is contained in:
Sam Hedin 2020-06-27 15:38:15 +02:00
parent f2770ce6cb
commit 82ebba467f
2 changed files with 8 additions and 17 deletions
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24
crates/nu-cli/src/env/directory_specific_environment.rs vendored
View File

@ -1,14 +1,15 @@
use crate::commands::{self, autoenv::Trusted};
use commands::autoenv;
use indexmap::{IndexMap};
use std::io::Write;
use indexmap::IndexMap;
use nu_errors::ShellError;
use sha2::{Digest, Sha256};
use std::io::Write;
use std::{
ffi::OsString,
fmt::Debug,
path::{Path, PathBuf}, fs::OpenOptions,
fs::OpenOptions,
path::{Path, PathBuf},
};
type EnvKey = String;
@ -17,7 +18,8 @@ type EnvVal = OsString;
pub struct DirectorySpecificEnvironment {
trusted: Option<Trusted>,
pub last_seen_directory: PathBuf,
//Directory -> Env key. 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 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>>>,
}
@ -65,11 +67,7 @@ impl DirectorySpecificEnvironment {
//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.
//If current dir is parent to last_seen_directory, current.cmp(last) returns less
//if current dir is the same as last_seen, current.cmp(last) returns equal
if working_dir.cmp(&self.last_seen_directory) != std::cmp::Ordering::Greater {
return Ok(vars_to_add);
}
while working_dir != self.last_seen_directory {
while self.last_seen_directory.cmp(&working_dir) == std::cmp::Ordering::Less { //parent.cmp(child) = Less
let wdirenv = working_dir.join(".nu-env");
if wdirenv.exists() {
let toml_doc = self.toml_if_directory_is_trusted(&wdirenv)?;
@ -116,23 +114,17 @@ impl DirectorySpecificEnvironment {
//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
if self.last_seen_directory.cmp(&current_dir) != std::cmp::Ordering::Greater {
return Ok(vars_to_cleanup);
}
let mut working_dir = self.last_seen_directory.clone();
while working_dir != current_dir {
while current_dir.cmp(&working_dir) == std::cmp::Ordering::Less {
if let Some(vars_added_by_this_directory) = self.added_env_vars.get(&working_dir) {
for (k, v) in vars_added_by_this_directory {
vars_to_cleanup.insert(k.clone(), v.clone());
}
self.added_env_vars.remove(&working_dir);
}
working_dir.pop();
}
Ok(vars_to_cleanup)
}
}

1
crates/nu-cli/src/env/environment.rs vendored
View File

@ -66,7 +66,6 @@ impl Environment {
let cleanup = self.autoenv.cleanup_after_dir_exit()?;
for (k, v) in cleanup {
if let Some(v) = v {
std::env::set_var(k, v);