From ff5873930fd5b3078ca71bd06b8560150ac89d91 Mon Sep 17 00:00:00 2001
From: Alex <al-git001@none.at>
Date: Wed, 4 May 2022 23:13:06 +0200
Subject: [PATCH] Add Variable replace possibility

Solve https://github.com/abiosoft/caddy-exec/issues/7
---
 .gitignore    | 4 ++++
 README.md     | 5 +++--
 middleware.go | 6 ++++++
 3 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/.gitignore b/.gitignore
index 9464ba6..a0eaeb5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,6 @@
 caddy
 buildenv_*
+
+# vscode
+*vscode
+*.code-workspace
\ No newline at end of file
diff --git a/README.md b/README.md
index 99f2a53..cf407a7 100644
--- a/README.md
+++ b/README.md
@@ -129,8 +129,9 @@ As an handler within a route.
           "handler": "exec",
           // command to execute
           "command": "git",
-          // command arguments
-          "args": ["pull", "origin", "master"],
+          // command arguments it's also possible to use 
+          // caddy variables like {http.request.uuid}
+          "args": ["pull", "origin", "master", "# {http.request.uuid}"],
 
           // [optional] directory to run the command from. Default is the current directory.
           "directory": "/home/user/site/public",
diff --git a/middleware.go b/middleware.go
index ebe5be1..5493eb0 100644
--- a/middleware.go
+++ b/middleware.go
@@ -45,6 +45,12 @@ func (m Middleware) ServeHTTP(w http.ResponseWriter, r *http.Request, next caddy
 		Error  string `json:"error,omitempty"`
 	}
 
+	repl := r.Context().Value(caddy.ReplacerCtxKey).(*caddy.Replacer)
+
+	for index, argument := range m.Args {
+		m.Args[index] = repl.ReplaceAll(argument, "")
+	}
+
 	err := m.run()
 
 	if err == nil {