diff options
Diffstat (limited to 'src/util/config.rs')
| -rw-r--r-- | src/util/config.rs | 152 |
1 files changed, 150 insertions, 2 deletions
diff --git a/src/util/config.rs b/src/util/config.rs index 04f8375a..f0a881aa 100644 --- a/src/util/config.rs +++ b/src/util/config.rs @@ -34,7 +34,11 @@ pub struct Config { pub compression_level: Option<i32>, /// RPC secret key: 32 bytes hex encoded - pub rpc_secret: String, + /// Note: When using `read_config` this should never be `None` + pub rpc_secret: Option<String>, + + /// Optional file where RPC secret key is read from + pub rpc_secret_file: Option<String>, /// Address to bind for RPC pub rpc_bind_addr: SocketAddr, @@ -177,7 +181,31 @@ pub fn read_config(config_file: PathBuf) -> Result<Config, Error> { let mut config = String::new(); file.read_to_string(&mut config)?; - Ok(toml::from_str(&config)?) + let mut parsed_config: Config = toml::from_str(&config)?; + + match (&parsed_config.rpc_secret, &parsed_config.rpc_secret_file) { + (Some(_), None) => { + // no-op + } + (Some(_), Some(_)) => { + return Err("only one of `rpc_secret` and `rpc_secret_file` can be set".into()) + } + (None, Some(rpc_secret_file_path_string)) => { + let mut rpc_secret_file = std::fs::OpenOptions::new() + .read(true) + .open(rpc_secret_file_path_string)?; + let mut rpc_secret_from_file = String::new(); + rpc_secret_file.read_to_string(&mut rpc_secret_from_file)?; + // trim_end: allows for use case such as `echo "$(openssl rand -hex 32)" > somefile`. + // also editors sometimes add a trailing newline + parsed_config.rpc_secret = Some(String::from(rpc_secret_from_file.trim_end())); + } + (None, None) => { + return Err("either `rpc_secret` or `rpc_secret_file` needs to be set".into()) + } + }; + + Ok(parsed_config) } fn default_compression() -> Option<i32> { @@ -233,3 +261,123 @@ where deserializer.deserialize_any(OptionVisitor) } + +#[cfg(test)] +mod tests { + use crate::error::Error; + use std::fs::File; + use std::io::Write; + + #[test] + fn test_rpc_secret_is_required() -> Result<(), Error> { + let path1 = mktemp::Temp::new_file()?; + let mut file1 = File::create(path1.as_path())?; + writeln!( + file1, + r#" + metadata_dir = "/tmp/garage/meta" + data_dir = "/tmp/garage/data" + replication_mode = "3" + rpc_bind_addr = "[::]:3901" + + [s3_api] + s3_region = "garage" + api_bind_addr = "[::]:3900" + "# + )?; + assert_eq!( + "either `rpc_secret` or `rpc_secret_file` needs to be set", + super::read_config(path1.to_path_buf()) + .unwrap_err() + .to_string() + ); + drop(path1); + drop(file1); + + let path2 = mktemp::Temp::new_file()?; + let mut file2 = File::create(path2.as_path())?; + writeln!( + file2, + r#" + metadata_dir = "/tmp/garage/meta" + data_dir = "/tmp/garage/data" + replication_mode = "3" + rpc_bind_addr = "[::]:3901" + rpc_secret = "foo" + + [s3_api] + s3_region = "garage" + api_bind_addr = "[::]:3900" + "# + )?; + + let config = super::read_config(path2.to_path_buf())?; + assert_eq!("foo", config.rpc_secret.unwrap()); + drop(path2); + drop(file2); + + Ok(()) + } + + #[test] + fn test_rpc_secret_file_works() -> Result<(), Error> { + let path_secret = mktemp::Temp::new_file()?; + let mut file_secret = File::create(path_secret.as_path())?; + writeln!(file_secret, "foo")?; + drop(file_secret); + + let path_config = mktemp::Temp::new_file()?; + let mut file_config = File::create(path_config.as_path())?; + let path_secret_path = path_secret.as_path().display(); + writeln!( + file_config, + r#" + metadata_dir = "/tmp/garage/meta" + data_dir = "/tmp/garage/data" + replication_mode = "3" + rpc_bind_addr = "[::]:3901" + rpc_secret_file = "{path_secret_path}" + + [s3_api] + s3_region = "garage" + api_bind_addr = "[::]:3900" + "# + )?; + let config = super::read_config(path_config.to_path_buf())?; + assert_eq!("foo", config.rpc_secret.unwrap()); + drop(path_config); + drop(path_secret); + drop(file_config); + Ok(()) + } + + #[test] + fn test_rcp_secret_and_rpc_secret_file_cannot_be_set_both() -> Result<(), Error> { + let path_config = mktemp::Temp::new_file()?; + let mut file_config = File::create(path_config.as_path())?; + writeln!( + file_config, + r#" + metadata_dir = "/tmp/garage/meta" + data_dir = "/tmp/garage/data" + replication_mode = "3" + rpc_bind_addr = "[::]:3901" + rpc_secret= "dummy" + rpc_secret_file = "dummy" + + [s3_api] + s3_region = "garage" + api_bind_addr = "[::]:3900" + "# + )?; + assert_eq!( + "only one of `rpc_secret` and `rpc_secret_file` can be set", + super::read_config(path_config.to_path_buf()) + .unwrap_err() + .to_string() + ); + drop(path_config); + drop(file_config); + Ok(()) + } +} |