nushell/crates/nu-cli/src/commands/autoenv_trust.rs
2020-06-21 21:25:40 +02:00

86 lines
2.6 KiB
Rust

use super::autoenv::Allowed;
use crate::commands::WholeStreamCommand;
use crate::prelude::*;
use nu_errors::ShellError;
use nu_protocol::SyntaxShape;
use nu_protocol::{Primitive, ReturnSuccess, Signature, UntaggedValue, Value};
use std::hash::{Hash, Hasher};
use std::io::Read;
use std::{collections::hash_map::DefaultHasher, ffi::OsStr, fs, path::PathBuf};
pub struct AutoenvTrust;
#[async_trait]
impl WholeStreamCommand for AutoenvTrust {
fn name(&self) -> &str {
"autoenv trust"
}
fn signature(&self) -> Signature {
Signature::build("autoenv trust").optional("dir", SyntaxShape::String, "Directory to allow")
}
fn usage(&self) -> &str {
"Trust a .nu-env file in the current or given directory"
}
async fn run(
&self,
args: CommandArgs,
registry: &CommandRegistry,
) -> Result<OutputStream, ShellError> {
let tag = args.call_info.name_tag.clone();
let dir_to_allow = match args.call_info.evaluate(registry).await?.args.nth(0) {
Some(Value {
value: UntaggedValue::Primitive(Primitive::String(ref path)),
tag: _,
}) => PathBuf::from(path),
_ => std::env::current_dir()?,
};
let mut env_file_to_allow = dir_to_allow.clone();
env_file_to_allow.push(".nu-env");
let content = std::fs::read_to_string(env_file_to_allow)?;
let mut hasher = DefaultHasher::new();
content.hash(&mut hasher);
let config_path = config::default_path_for(&Some(PathBuf::from("nu-env.toml")))?;
let mut file = match std::fs::OpenOptions::new()
.read(true)
.create(true)
.write(true)
.open(config_path.clone())
{
Ok(p) => p,
Err(_) => {
return Err(ShellError::untagged_runtime_error(
"Couldn't open nu-env.toml",
));
}
};
let mut doc = String::new();
file.read_to_string(&mut doc)?;
let mut allowed: Allowed = toml::from_str(doc.as_str()).unwrap_or_else(|_| Allowed {
dirs: IndexMap::new(),
});
allowed
.dirs
.insert(dir_to_allow.as_os_str(), hasher.finish().to_string());
fs::write(config_path, toml::to_string(&allowed).unwrap())
.expect("Couldn't write to toml file");
Ok(OutputStream::one(ReturnSuccess::value(
UntaggedValue::string(".nu-env trusted!").into_value(tag),
)))
}
fn is_binary(&self) -> bool {
false
}
fn examples(&self) -> Vec<Example> {
Vec::new()
}
}