simplify cfssl cmd output parsing

src/cert.go

@@ -1,59 +1,54 @@
 package main
 
 import (
+	"bytes"
 	"encoding/json"
 	"fmt"
 	"os"
 	"os/exec"
+	"path"
 	"strings"
 	"text/template"
 
 	log "github.com/sirupsen/logrus"
 )
 
-func parsecfsslInput(i *[]byte) (out string) {
-	in := strings.Split(string(*i), "{")
-	for i, s := range in {
-		if i != 0 {
-			out += s
-		}
-	}
-	return "{" + out
-}
-
-func cfssljson(i *[]byte, file string) {
+func cfssljson(b []byte, file string, node *Node) {
 	var input = map[string]interface{}{}
 	var err error
 	var cert string
 	var key string
 	var csr string
 
-	err = json.Unmarshal([]byte(parsecfsslInput(i)), &input)
+	//log.Debugf("cfssl output:\n%s", string(b))
+	err = json.Unmarshal(b, &input)
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "Failed to parse input: %v\n", err)
 		os.Exit(1)
 	}
 	if contents, ok := input["cert"]; ok {
 		cert = contents.(string)
-	} else if contents, ok = input["certificate"]; ok {
-		cert = contents.(string)
+		if node != nil {
+			node.TLSCert = strings.Replace(cert, "\n", "", -1)
+		}
 	}
 	createFile(file+".pem", cert)
 
 	if contents, ok := input["key"]; ok {
 		key = contents.(string)
-	} else if contents, ok = input["private_key"]; ok {
-		key = contents.(string)
+		if node != nil {
+			node.TLSKey = strings.Replace(key, "\n", "", -1)
+		}
 	}
 	createFile(file+"-key.pem", key)
 
 	if contents, ok := input["csr"]; ok {
 		csr = contents.(string)
-	} else if contents, ok = input["certificate_request"]; ok {
-		csr = contents.(string)
 	}
 	createFile(file+".csr", csr)
-
+	if node != nil {
+		log.Debugf("node: %+v", node)
+	}
 }
 
 func (c *cLab) createRootCA() (err error) {
@@ -91,20 +86,27 @@ func (c *cLab) createRootCA() (err error) {
 	}
 	log.Debug(fmt.Sprintf("CopyFile GoTemplate src %s -> dat %s succeeded\n", src, dst))
 
-	var cmd *exec.Cmd
-	cmd = exec.Command("cfssl", "gencert", "-initca", dst)
-	o, err := cmd.CombinedOutput()
-	//fmt.Println(string(o))
+	cmd := exec.Command("cfssl", "gencert", "-initca", dst)
+	o, err := cmd.Output()
 	if err != nil {
-		log.Errorf("cmd.Run() failed with %s\n", err)
+		log.Errorf("cmd.Run() failed with %s", err)
+	}
+	if debug {
+		jsCert := new(bytes.Buffer)
+		json.Indent(jsCert, o, "", "  ")
+		log.Debugf("'cfssl gencert -initca' output:\n%s", jsCert.String())
 	}
 
-	cfssljson(&o, c.Dir.LabCARoot+"/"+"root-ca")
+	cfssljson(o, c.Dir.LabCARoot+"/"+"root-ca", nil)
 
 	return nil
 }
 
 func (c *cLab) createCERT(shortdutName string) (err error) {
+	node, ok := c.Nodes[shortdutName]
+	if !ok {
+		return fmt.Errorf("unknown dut name: %s", shortdutName)
+	}
 	//create dut cert diretcory
 	createDirectory(c.Nodes[shortdutName].CertDir, 0755)
 
@@ -113,7 +115,7 @@ func (c *cLab) createCERT(shortdutName string) (err error) {
 
 	// copy topology to node specific directory in lab
 	src = "ca_config/templates/csr.json"
-	dst = c.Nodes[shortdutName].CertDir + "/" + "csr" + "-" + shortdutName + ".json"
+	dst = path.Join(node.CertDir, "csr"+"-"+shortdutName+".json")
 	tpl, err := template.ParseFiles(src)
 	if err != nil {
 		log.Fatalln(err)
@@ -139,16 +141,19 @@ func (c *cLab) createCERT(shortdutName string) (err error) {
 	log.Debug(fmt.Sprintf("CopyFile GoTemplate src %s -> dat %s succeeded\n", src, dst))
 
 	var cmd *exec.Cmd
-	rootCert := c.Dir.LabCARoot + "/" + "root-ca.pem"
-	rootKey := c.Dir.LabCARoot + "/" + "root-ca-key.pem"
+	rootCert := path.Join(c.Dir.LabCARoot, "root-ca.pem")
+	rootKey := path.Join(c.Dir.LabCARoot, "root-ca-key.pem")
 	cmd = exec.Command("cfssl", "gencert", "-ca", rootCert, "-ca-key", rootKey, dst)
-	o, err := cmd.CombinedOutput()
-	//fmt.Println(string(o))
+	o, err := cmd.Output()
 	if err != nil {
-		log.Errorf("cmd.Run() failed with %s\n", err)
+		log.Errorf("'cfssl gencert -ca rootCert -caKey rootKey' failed with: %v", err)
+	}
+	if debug {
+		jsCert := new(bytes.Buffer)
+		json.Indent(jsCert, o, "", "  ")
+		log.Debugf("'cfssl gencert -ca rootCert -caKey rootKey' output:\n%s", jsCert.String())
 	}
 
-	cfssljson(&o, c.Nodes[shortdutName].CertDir+"/"+shortdutName)
-
+	cfssljson(o, path.Join(node.CertDir, shortdutName), node)
 	return nil
 }