diff options
Diffstat (limited to 'src/garage')
| -rw-r--r-- | src/garage/Cargo.toml | 1 | ||||
| -rw-r--r-- | src/garage/main.rs | 58 | ||||
| -rw-r--r-- | src/garage/repair/offline.rs | 2 | ||||
| -rw-r--r-- | src/garage/secrets.rs | 280 | ||||
| -rw-r--r-- | src/garage/server.rs | 2 |
5 files changed, 285 insertions, 58 deletions
diff --git a/src/garage/Cargo.toml b/src/garage/Cargo.toml index 35d87a3e..00975738 100644 --- a/src/garage/Cargo.toml +++ b/src/garage/Cargo.toml @@ -67,6 +67,7 @@ chrono = "0.4" http = "0.2" hmac = "0.12" hyper = { version = "0.14", features = ["client", "http1", "runtime"] } +mktemp = "0.5" sha2 = "0.10" static_init = "1.0" diff --git a/src/garage/main.rs b/src/garage/main.rs index a9f1ad29..d89762e4 100644 --- a/src/garage/main.rs +++ b/src/garage/main.rs @@ -7,6 +7,7 @@ extern crate tracing; mod admin; mod cli; mod repair; +mod secrets; mod server; #[cfg(feature = "telemetry-otlp")] mod tracing_setup; @@ -25,7 +26,6 @@ use structopt::StructOpt; use netapp::util::parse_and_resolve_peer_addr; use netapp::NetworkKey; -use garage_util::config::{read_secret_file, Config}; use garage_util::error::*; use garage_rpc::system::*; @@ -35,6 +35,7 @@ use garage_model::helper::error::Error as HelperError; use admin::*; use cli::*; +use secrets::Secrets; #[derive(StructOpt, Debug)] #[structopt( @@ -63,39 +64,6 @@ struct Opt { cmd: Command, } -#[derive(StructOpt, Debug)] -pub struct Secrets { - /// RPC secret network key, used to replace rpc_secret in config.toml when running the - /// daemon or doing admin operations - #[structopt(short = "s", long = "rpc-secret", env = "GARAGE_RPC_SECRET")] - pub rpc_secret: Option<String>, - - /// RPC secret network key, used to replace rpc_secret in config.toml and rpc-secret - /// when running the daemon or doing admin operations - #[structopt(long = "rpc-secret-file", env = "GARAGE_RPC_SECRET_FILE")] - pub rpc_secret_file: Option<String>, - - /// Admin API authentication token, replaces admin.admin_token in config.toml when - /// running the Garage daemon - #[structopt(long = "admin-token", env = "GARAGE_ADMIN_TOKEN")] - pub admin_token: Option<String>, - - /// Admin API authentication token file path, replaces admin.admin_token in config.toml - /// and admin-token when running the Garage daemon - #[structopt(long = "admin-token-file", env = "GARAGE_ADMIN_TOKEN_FILE")] - pub admin_token_file: Option<String>, - - /// Metrics API authentication token, replaces admin.metrics_token in config.toml when - /// running the Garage daemon - #[structopt(long = "metrics-token", env = "GARAGE_METRICS_TOKEN")] - pub metrics_token: Option<String>, - - /// Metrics API authentication token file path, replaces admin.metrics_token in config.toml - /// and metrics-token when running the Garage daemon - #[structopt(long = "metrics-token-file", env = "GARAGE_METRICS_TOKEN_FILE")] - pub metrics_token_file: Option<String>, -} - #[tokio::main] async fn main() { // Initialize version and features info @@ -273,25 +241,3 @@ async fn cli_command(opt: Opt) -> Result<(), Error> { Ok(x) => Ok(x), } } - -fn fill_secrets(mut config: Config, secrets: Secrets) -> Result<Config, Error> { - if secrets.rpc_secret.is_some() { - config.rpc_secret = secrets.rpc_secret; - } else if secrets.rpc_secret_file.is_some() { - config.rpc_secret = Some(read_secret_file(&secrets.rpc_secret_file.unwrap())?); - } - - if secrets.admin_token.is_some() { - config.admin.admin_token = secrets.admin_token; - } else if secrets.admin_token_file.is_some() { - config.admin.admin_token = Some(read_secret_file(&secrets.admin_token_file.unwrap())?); - } - - if secrets.metrics_token.is_some() { - config.admin.metrics_token = secrets.metrics_token; - } else if secrets.metrics_token_file.is_some() { - config.admin.metrics_token = Some(read_secret_file(&secrets.metrics_token_file.unwrap())?); - } - - Ok(config) -} diff --git a/src/garage/repair/offline.rs b/src/garage/repair/offline.rs index beb48d65..45024e71 100644 --- a/src/garage/repair/offline.rs +++ b/src/garage/repair/offline.rs @@ -6,7 +6,7 @@ use garage_util::error::*; use garage_model::garage::Garage; use crate::cli::structs::*; -use crate::{fill_secrets, Secrets}; +use crate::secrets::{fill_secrets, Secrets}; pub async fn offline_repair( config_file: PathBuf, diff --git a/src/garage/secrets.rs b/src/garage/secrets.rs new file mode 100644 index 00000000..c40c3cc9 --- /dev/null +++ b/src/garage/secrets.rs @@ -0,0 +1,280 @@ +use structopt::StructOpt; + +use garage_util::config::Config; +use garage_util::error::Error; + +/// Structure for secret values or paths that are passed as CLI arguments or environment +/// variables, instead of in the config file. +#[derive(StructOpt, Debug, Default, Clone)] +pub struct Secrets { + /// Skip permission check on files containing secrets + #[cfg(unix)] + #[structopt( + long = "allow-world-readable-secrets", + env = "GARAGE_ALLOW_WORLD_READABLE_SECRETS" + )] + pub allow_world_readable_secrets: Option<bool>, + + /// RPC secret network key, used to replace rpc_secret in config.toml when running the + /// daemon or doing admin operations + #[structopt(short = "s", long = "rpc-secret", env = "GARAGE_RPC_SECRET")] + pub rpc_secret: Option<String>, + + /// RPC secret network key, used to replace rpc_secret in config.toml and rpc-secret + /// when running the daemon or doing admin operations + #[structopt(long = "rpc-secret-file", env = "GARAGE_RPC_SECRET_FILE")] + pub rpc_secret_file: Option<String>, + + /// Admin API authentication token, replaces admin.admin_token in config.toml when + /// running the Garage daemon + #[structopt(long = "admin-token", env = "GARAGE_ADMIN_TOKEN")] + pub admin_token: Option<String>, + + /// Admin API authentication token file path, replaces admin.admin_token in config.toml + /// and admin-token when running the Garage daemon + #[structopt(long = "admin-token-file", env = "GARAGE_ADMIN_TOKEN_FILE")] + pub admin_token_file: Option<String>, + + /// Metrics API authentication token, replaces admin.metrics_token in config.toml when + /// running the Garage daemon + #[structopt(long = "metrics-token", env = "GARAGE_METRICS_TOKEN")] + pub metrics_token: Option<String>, + + /// Metrics API authentication token file path, replaces admin.metrics_token in config.toml + /// and metrics-token when running the Garage daemon + #[structopt(long = "metrics-token-file", env = "GARAGE_METRICS_TOKEN_FILE")] + pub metrics_token_file: Option<String>, +} + +/// Single function to fill all secrets in the Config struct from their correct source (value +/// from config or CLI param or env variable or read from a file specified in config or CLI +/// param or env variable) +pub fn fill_secrets(mut config: Config, secrets: Secrets) -> Result<Config, Error> { + let allow_world_readable = secrets + .allow_world_readable_secrets + .unwrap_or(config.allow_world_readable_secrets); + + fill_secret( + &mut config.rpc_secret, + &config.rpc_secret_file, + &secrets.rpc_secret, + &secrets.rpc_secret_file, + "rpc_secret", + allow_world_readable, + )?; + + fill_secret( + &mut config.admin.admin_token, + &config.admin.admin_token_file, + &secrets.admin_token, + &secrets.admin_token_file, + "admin.admin_token", + allow_world_readable, + )?; + fill_secret( + &mut config.admin.metrics_token, + &config.admin.metrics_token_file, + &secrets.metrics_token, + &secrets.metrics_token_file, + "admin.metrics_token", + allow_world_readable, + )?; + + Ok(config) +} + +fn fill_secret( + config_secret: &mut Option<String>, + config_secret_file: &Option<String>, + cli_secret: &Option<String>, + cli_secret_file: &Option<String>, + name: &'static str, + allow_world_readable: bool, +) -> Result<(), Error> { + let cli_value = match (&cli_secret, &cli_secret_file) { + (Some(_), Some(_)) => { + return Err(format!("only one of `{}` and `{}_file` can be set", name, name).into()); + } + (Some(secret), None) => Some(secret.to_string()), + (None, Some(file)) => Some(read_secret_file(file, allow_world_readable)?), + (None, None) => None, + }; + + if let Some(val) = cli_value { + if config_secret.is_some() || config_secret_file.is_some() { + debug!("Overriding secret `{}` using value specified using CLI argument or environnement variable.", name); + } + + *config_secret = Some(val); + } else if let Some(file_path) = &config_secret_file { + if config_secret.is_some() { + return Err(format!("only one of `{}` and `{}_file` can be set", name, name).into()); + } + + *config_secret = Some(read_secret_file(file_path, allow_world_readable)?); + } + + Ok(()) +} + +fn read_secret_file(file_path: &String, allow_world_readable: bool) -> Result<String, Error> { + if !allow_world_readable { + #[cfg(unix)] + { + 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 secret_buf = std::fs::read_to_string(file_path)?; + + // 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())) +} + +#[cfg(test)] +mod tests { + use std::fs::File; + use std::io::Write; + + use garage_util::config::read_config; + use garage_util::error::Error; + + use super::*; + + #[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(); + writeln!( + file_config, + r#" + metadata_dir = "/tmp/garage/meta" + data_dir = "/tmp/garage/data" + replication_mode = "3" + rpc_bind_addr = "[::]:3901" + rpc_secret_file = "{}" + + [s3_api] + s3_region = "garage" + api_bind_addr = "[::]:3900" + "#, + path_secret_path.display() + )?; + drop(file_config); + + // Second configuration file, same as previous one + // except it allows world-readable secrets. + let path_config_allow_world_readable = mktemp::Temp::new_file()?; + let mut file_config_allow_world_readable = + File::create(path_config_allow_world_readable.as_path())?; + writeln!( + file_config_allow_world_readable, + r#" + metadata_dir = "/tmp/garage/meta" + data_dir = "/tmp/garage/data" + replication_mode = "3" + rpc_bind_addr = "[::]:3901" + rpc_secret_file = "{}" + allow_world_readable_secrets = true + + [s3_api] + s3_region = "garage" + api_bind_addr = "[::]:3900" + "#, + path_secret_path.display() + )?; + drop(file_config_allow_world_readable); + + let config = read_config(path_config.to_path_buf())?; + let config = fill_secrets(config, Secrets::default())?; + assert_eq!("foo", config.rpc_secret.unwrap()); + + #[cfg(unix)] + { + // Check non world-readable secrets config + + let secrets_allow_world_readable = Secrets { + allow_world_readable_secrets: Some(true), + ..Default::default() + }; + let secrets_no_allow_world_readable = Secrets { + allow_world_readable_secrets: Some(false), + ..Default::default() + }; + + use std::os::unix::fs::PermissionsExt; + let metadata = std::fs::metadata(&path_secret_path)?; + let mut perm = metadata.permissions(); + perm.set_mode(0o660); + std::fs::set_permissions(&path_secret_path, perm)?; + + // Config file that just specifies the path + let config = read_config(path_config.to_path_buf())?; + assert!(fill_secrets(config, Secrets::default()).is_err()); + + let config = read_config(path_config.to_path_buf())?; + assert!(fill_secrets(config, secrets_allow_world_readable.clone()).is_ok()); + + let config = read_config(path_config.to_path_buf())?; + assert!(fill_secrets(config, secrets_no_allow_world_readable.clone()).is_err()); + + // Config file that also specifies to allow world_readable_secrets + let config = read_config(path_config_allow_world_readable.to_path_buf())?; + assert!(fill_secrets(config, Secrets::default()).is_ok()); + + let config = read_config(path_config_allow_world_readable.to_path_buf())?; + assert!(fill_secrets(config, secrets_allow_world_readable).is_ok()); + + let config = read_config(path_config_allow_world_readable.to_path_buf())?; + assert!(fill_secrets(config, secrets_no_allow_world_readable).is_err()); + } + + drop(path_secret); + drop(path_config); + drop(path_config_allow_world_readable); + + 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" + "# + )?; + let config = read_config(path_config.to_path_buf())?; + assert_eq!( + "only one of `rpc_secret` and `rpc_secret_file` can be set", + fill_secrets(config, Secrets::default()) + .unwrap_err() + .to_string() + ); + drop(path_config); + drop(file_config); + Ok(()) + } +} diff --git a/src/garage/server.rs b/src/garage/server.rs index 96ea900d..25d4b845 100644 --- a/src/garage/server.rs +++ b/src/garage/server.rs @@ -15,9 +15,9 @@ use garage_web::WebServer; use garage_api::k2v::api_server::K2VApiServer; use crate::admin::*; +use crate::secrets::{fill_secrets, Secrets}; #[cfg(feature = "telemetry-otlp")] use crate::tracing_setup::*; -use crate::{fill_secrets, Secrets}; async fn wait_from(mut chan: watch::Receiver<bool>) { while !*chan.borrow() { |