72 lines
1.4 KiB
Rust
72 lines
1.4 KiB
Rust
use std::{
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fmt::Debug,
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fs::File,
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io::Read,
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path::Path,
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};
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use serde::de::DeserializeOwned;
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use crate::errors::LoadTomlError;
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pub const CONFIG_PERMISSIONS_MODE: u32 = 33152;
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fn load_inner <
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T: DeserializeOwned
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> (
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mut f: File
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) -> Result <T, LoadTomlError> {
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let mut buffer = vec! [0_u8; 4096];
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let bytes_read = f.read (&mut buffer)?;
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buffer.truncate (bytes_read);
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let config_s = String::from_utf8 (buffer)?;
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Ok (toml::from_str (&config_s)?)
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}
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/// For files that contain public-viewable information
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pub fn load_public <
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T: DeserializeOwned,
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P: AsRef <Path> + Debug
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> (
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config_file_path: P
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) -> Result <T, LoadTomlError> {
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let f = File::open (&config_file_path)?;
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load_inner (f)
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}
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/// For files that may contain secrets and should have permissions or other
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/// safeties checked
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#[cfg (unix)]
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pub fn load <
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T: DeserializeOwned,
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P: AsRef <Path> + Debug
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> (
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config_file_path: P
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) -> Result <T, LoadTomlError> {
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use std::os::unix::fs::PermissionsExt;
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let f = File::open (&config_file_path)?;
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let mode = f.metadata ()?.permissions ().mode ();
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if mode != CONFIG_PERMISSIONS_MODE {
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return Err (LoadTomlError::ConfigBadPermissions);
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}
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load_inner (f)
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}
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// The permission check doesn't work on Windows
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#[cfg (not (unix))]
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pub fn load <
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T: DeserializeOwned,
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P: AsRef <Path> + Debug
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> (
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config_file_path: P
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) -> Result <T, LoadTomlError> {
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load_public (config_file_path)
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}
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