HTTP_PROXY env variable value is reverted to its original value after…

… function return

Signed-off-by: GLVS Kiriti <[email protected]>

events/syscall/program_run_with_disallowed_http_proxy_env.go

@@ -23,13 +23,20 @@ import (
 
 var _ = events.Register(
 	ProgramRunWithDisallowedHttpProxyEnv,
-	events.WithDisabled(), // this rules is not included in falco_rules.yaml (stable rules), so disable the action
+	// events.WithDisabled(), // this rules is not included in falco_rules.yaml (stable rules), so disable the action
 )
 
 func ProgramRunWithDisallowedHttpProxyEnv(h events.Helper) error {
-	h.Log().Info("executing curl or wget with disallowed HTTP_PROXY environment variable")
+	// Get the current value of HTTP_PROXY environment variable
+	originalHTTPProxy := os.Getenv("HTTP_PROXY")
 
+	// Modify HTTP_PROXY environment variable
 	os.Setenv("HTTP_PROXY", "http://my.http.proxy.com ")
+
+	// Ensure the original HTTP_PROXY value is reverted even if an error occurs
+	defer os.Setenv("HTTP_PROXY", originalHTTPProxy)
+
+	h.Log().Info("executing curl or wget with disallowed HTTP_PROXY environment variable")
 	cmd := exec.Command("curl", "http://example.com")
 
 	return cmd.Run()