Fix: JWT secret retrieve config file retrieval

Add handling environment variable for config path in
JWT functions too.

Signed-off-by: Denys Fedoryshchenko <denys.f@collabora.com>

Author: nuclearcat

src/storjwt.rs

@@ -9,7 +9,11 @@ use rand::{distributions::Alphanumeric, Rng};
 pub fn verify_jwt_token(token_str: &str) -> Result<BTreeMap<String, String>, jwt::Error> {
     // config.toml, jwt_secret parameter
     let args = Args::parse();
-    let cfg_file = args.config_file;
+    let mut cfg_file = args.config_file;
+    // check if env variable available KCI_STORAGE_CONFIG
+    if let Ok(env_cfg_file) = std::env::var("KCI_STORAGE_CONFIG") {
+        cfg_file = env_cfg_file;
+    }
     let toml_cfg = std::fs::read_to_string(&cfg_file).unwrap();
     let parsed_toml = toml_cfg.parse::<Table>().unwrap();
     let key_str = parsed_toml["jwt_secret"].as_str().unwrap();