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Add support for specifying rpc_secret_file, metrics_token_file and admin_token_file using environment variables #643

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lx merged 4 commits from networkException/garage:token-file-env into main-0.8.x 2023-10-19 09:33:12 +00:00
Conversation 4 Commits 4 Files changed 5 +19 -16
1 changed files with 19 additions and 16 deletions
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src/util/config.rs
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@ -238,6 +238,24 @@ pub fn read_config(config_file: PathBuf) -> Result<Config, Error> {
Ok(parsed_config)
}
pub fn read_secret_file(file_path: &String) -> Result<String, Error> {
#[cfg(unix)]
if std::env::var("GARAGE_ALLOW_WORLD_READABLE_SECRETS").as_deref() != Ok("true") {
flokli commented 2023-10-20 11:10:00 +00:00
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This check will actually fail on more recent versions of systemd, as they switched from plain chmods to ACLs, and it's not trivial to determine if something is readable by others or not.

I think it'd make more sense to drop this check to become a warning.

This check will actually *fail* on more recent versions of systemd, as they switched from plain chmods to ACLs, and it's not trivial to determine if something is readable by others or not. I think it'd make more sense to drop this check to become a warning.
flokli commented 2023-10-20 11:11:00 +00:00
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Upstream systemd issue: https://github.com/systemd/systemd/issues/29435

Upstream systemd issue: https://github.com/systemd/systemd/issues/29435
flokli commented 2023-10-26 07:54:16 +00:00
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workaround in #663

workaround in https://git.deuxfleurs.fr/Deuxfleurs/garage/pulls/663
use std::os::unix::fs::MetadataExt;
let metadata = std::fs::metadata(file_path)?;
if metadata.mode() & 0o077 != 0 {
return Err(format!("File {} is world-readable! (mode: 0{:o}, expected 0600)\nRefusing to start until this is fixed, or environment variable GARAGE_ALLOW_WORLD_READABLE_SECRETS is set to true.", file_path, metadata.mode()).into());
}
}
let mut file = std::fs::OpenOptions::new().read(true).open(file_path)?;
let mut secret_buf = String::new();
file.read_to_string(&mut secret_buf)?;
// trim_end: allows for use case such as `echo "$(openssl rand -hex 32)" > somefile`.
// also editors sometimes add a trailing newline
Ok(String::from(secret_buf.trim_end()))
}
fn secret_from_file(
secret: &mut Option<String>,
secret_file: &Option<String>,
@ -250,22 +268,7 @@ fn secret_from_file(
(Some(_), Some(_)) => {
return Err(format!("only one of `{}` and `{}_file` can be set", name, name).into());
}
(None, Some(file_path)) => {
#[cfg(unix)]
if std::env::var("GARAGE_ALLOW_WORLD_READABLE_SECRETS").as_deref() != Ok("true") {
use std::os::unix::fs::MetadataExt;
let metadata = std::fs::metadata(file_path)?;
if metadata.mode() & 0o077 != 0 {
return Err(format!("File {} is world-readable! (mode: 0{:o}, expected 0600)\nRefusing to start until this is fixed, or environment variable GARAGE_ALLOW_WORLD_READABLE_SECRETS is set to true.", file_path, metadata.mode()).into());
}
}
let mut file = std::fs::OpenOptions::new().read(true).open(file_path)?;
let mut secret_buf = String::new();
file.read_to_string(&mut secret_buf)?;
// trim_end: allows for use case such as `echo "$(openssl rand -hex 32)" > somefile`.
// also editors sometimes add a trailing newline
*secret = Some(String::from(secret_buf.trim_end()));
}
(None, Some(file_path)) => *secret = Some(read_secret_file(file_path)?),
}
Ok(())
}