Taru can now pass a logged in user's name to a task

Cargo.nix

@@ -1,5 +1,5 @@
 
-# This file was @generated by crate2nix 0.10.0-alpha.1 with the command:
+# This file was @generated by crate2nix 0.9.0 with the command:
 #   "generate"
 # See https://github.com/kolloch/crate2nix for more info.
 
@@ -4250,7 +4250,7 @@ rec {
       };
       "taru" = rec {
         crateName = "taru";
-        version = "0.4.2";
+        version = "0.4.3";
         edition = "2018";
         crateBin = [
           { name = "taru"; path = "src/main.rs"; }
@@ -6547,5 +6547,4 @@ rec {
   #
 
   };
-}
-
+}

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "taru"
-version = "0.4.2"
+version = "0.4.3"
 authors = ["Mewp <[email protected]>"]
 edition = "2018"
 

README.md

@@ -99,7 +99,9 @@ All endpoints that run tasks accept arguments as either parameters in the url qu
 
 Users
 -----
-If you define it, Taru will require users to authenticate by setting the X-User header to their username. Typically, this is done by using a reverse proxy, such as nginx, to authenticate using the desired method, then pass the result as X-User.
+If you define it, Taru will require users to authenticate by setting the `X-User` header to their username. Typically, this is done by using a reverse proxy, such as nginx, to authenticate using the desired method, then pass the result as `X-User`.
+
+The value of the `X-User` header is always available as the `$taru_user` variable that you can pass as an argument to a task.
 
 Each use can has three kinds of permissions:
 

src/main.rs

@@ -148,8 +148,18 @@ async fn run_task(req: &HttpRequest, data: &web::Data<Arc<RwLock<AppState>>>, pa
     }
 
     let cmdline = task.command.iter().map(|segment|
-        if segment.starts_with("$") && args.contains_key(&segment[1..]) {
-            args.get(&segment[1..]).unwrap().clone()
+        if segment.starts_with("$") {
+            if args.contains_key(&segment[1..]) {
+                args.get(&segment[1..]).unwrap().clone()
+            } else if segment == "$taru_user" {
+                if let Some(Ok(login)) = req.headers().get("x-user").map(|h| h.to_str()) {
+                    login.to_owned()
+                } else {
+                    String::new()
+                }
+            } else {
+                segment.clone()
+            }
         } else {
             segment.clone()
         }