Allow executed script to have arguments

config.json

@@ -2,13 +2,16 @@
   "ListenAddress": "127.0.0.1:8654",
   "Services": {
     "test": {
-      "Script": "./example.sh",
+      "Script": {
+          "Program": "./example.sh",
+          "AppendPayload": true
+      },
       "Secret": "THISISVERYSECRET",
       "SignatureHeader": "X-Gitea-Signature",
       "Tests": [
         {
-          "Command": "git",
-          "Arguments": [ "pull" ]
+          "Program": "echo",
+          "Arguments": [ "test" ]
         }
       ]
     }

example.sh

@@ -1,2 +1,3 @@
 #!/usr/bin/bash
 date >> test_output
+echo "$1" >> test_output

main.go

@@ -24,6 +24,14 @@ func main() {
 	r := mux.NewRouter()
 	r.HandleFunc("/webhooks/{service}", webhookHandler)
 
+	if p, ok := os.LookupEnv("CONFIG"); ok {
+		config_filename = p
+	}
+
+	if p, ok := os.LookupEnv("NO_SIGNATURE_CHECK"); ok {
+		checkSignature = p != "true"
+	}
+
 	raw_config, err := ioutil.ReadFile(config_filename)
 	if err != nil {
 		panic(err.Error())
@@ -34,13 +42,6 @@ func main() {
 		panic(err.Error())
 	}
 
-	if p, ok := os.LookupEnv("CONFIG"); ok {
-		config_filename = p
-	}
-
-	if p, ok := os.LookupEnv("NO_SIGNATURE_CHECK"); ok {
-		checkSignature = p != "true"
-	}
 
 	log.Fatal(http.ListenAndServe(config.ListenAddress, r))
 }
@@ -73,15 +74,15 @@ func webhookHandler(w http.ResponseWriter, r *http.Request) {
 
 	// Run tests, immediately stop if one fails
 	for _, test := range service.Tests {
-		if _, err := exec.Command(test.Command, test.Arguments...).Output(); err != nil {
+		if _, err := test.Execute(payload); err != nil {
 			writeResponse(w, 409,
-				fmt.Sprintf("409 Conflict: Test failed: %v", err.Error()),
+				fmt.Sprintf("Conflict: Test failed: %v", err.Error()),
 			)
 			return
 		}
 	}
 
-	if stdout, err := exec.Command(service.Script, payload).Output(); err != nil {
+	if stdout, err := service.Script.Execute(payload); err != nil {
 		writeResponse(w, 500, err.Error())
 		return
 	} else {
@@ -106,9 +107,12 @@ func (c Config) Validate() error {
 		return requiredFieldError{"ListenAddress", ""}
 	}
 
+	jsonbytes, _ := json.MarshalIndent(c, "", "  ")
+	fmt.Println(string(jsonbytes))
+
 	for serviceName, service := range c.Services {
-		if service.Script == "" {
-			return requiredFieldError{"Script", serviceName}
+		if service.Script.Program == "" {
+			return requiredFieldError{"Script.Program", serviceName}
 		}
 		if service.SignatureHeader == "" {
 			return requiredFieldError{"SignatureHeader", serviceName}
@@ -121,16 +125,27 @@ func (c Config) Validate() error {
 	return nil
 }
 
-type Test struct {
-	Command   string
+func (c Command) Execute(payload string) ([]byte, error) {
+	arguments := make([]string, 0)
+	copy(c.Arguments, arguments)
+	if c.AppendPayload {
+		arguments = append(arguments, payload)
+	}
+
+	return exec.Command(c.Program, arguments...).Output()
+}
+
+type Command struct {
+	Program       string
 	Arguments     []string
+	AppendPayload bool
 }
 
 type Service struct {
-	Script          string
+	Script          Command
 	Secret          string
 	SignatureHeader string
-	Tests           []Test
+	Tests           []Command
 }
 
 type Config struct {

readme.md

@@ -27,7 +27,13 @@ You should also specify a shared secret in the `Secret` key.
 You can disable signature verification altogether by setting environment variable
 `NO_SIGNATURE_VERIFICATION` to `true`.
 
-## Tests
+## Writing Commands
+
+gohookr doesn't care what the command is as long as the `Program` is executable.
+You can specify extra arguments with the `Arguments` field.
+You can ask it to put the payload as the last argument by setting `AppendPayload` to true.
+
+## Writing Tests
 
 gohookr can run test before running your script.
 Tests must be in the form of bash scripts.
@@ -35,13 +41,13 @@ A non-zero return code is considered a fail and gohookr will run no further test
 deploy.
 
 Tests are run in the order they're listed so any actions that need to be done before
-real tests are run can simply be put before the tests.
+tests are run can simply be put in this section before the tests.
 
 ## Example Config
 
 Required config keys are `ListenAddress` and `Services`.
 
-Requried keys per service are `Script`, `Secret`, `SignatureHeader`.
+Requried keys per service are `Script.Program`, `Secret`, `SignatureHeader`.
 
 An example config file can be found [here](./config.json) but also below:
 
@@ -50,13 +56,16 @@ An example config file can be found [here](./config.json) but also below:
   "ListenAddress": "127.0.0.1:8654",
   "Services": {
     "test": {
-      "Script": "./example.sh",
+      "Script": {
+          "Program": "./example.sh",
+          "AppendPayload": true
+      },
       "Secret": "THISISVERYSECRET",
       "SignatureHeader": "X-Gitea-Signature",
       "Tests": [
         {
-          "Command": "git",
-          "Arguments": [ "pull" ]
+          "Program": "echo",
+          "Arguments": [ "test" ]
         }
       ]
     }