refactor: unify http client creation

sztp-agent/cmd/daemon.go

@@ -59,7 +59,8 @@ func Daemon() *cobra.Command {
 					return fmt.Errorf("must not be folder: %q", filePath)
 				}
 			}
-			a := secureagent.NewAgent(bootstrapURL, serialNumber, dhcpLeaseFile, devicePassword, devicePrivateKey, deviceEndEntityCert, bootstrapTrustAnchorCert)
+			client := secureagent.NewHTTPClient(bootstrapTrustAnchorCert, deviceEndEntityCert, devicePrivateKey)
+			a := secureagent.NewAgent(bootstrapURL, serialNumber, dhcpLeaseFile, devicePassword, devicePrivateKey, deviceEndEntityCert, bootstrapTrustAnchorCert, &client)
 			return a.RunCommandDaemon()
 		},
 	}

sztp-agent/cmd/disable.go

@@ -34,7 +34,8 @@ func Disable() *cobra.Command {
 		Use:   "disable",
 		Short: "Run the disable command",
 		RunE: func(_ *cobra.Command, _ []string) error {
-			a := secureagent.NewAgent(bootstrapURL, serialNumber, dhcpLeaseFile, devicePassword, devicePrivateKey, deviceEndEntityCert, bootstrapTrustAnchorCert)
+			client := secureagent.NewHTTPClient(bootstrapTrustAnchorCert, deviceEndEntityCert, devicePrivateKey)
+			a := secureagent.NewAgent(bootstrapURL, serialNumber, dhcpLeaseFile, devicePassword, devicePrivateKey, deviceEndEntityCert, bootstrapTrustAnchorCert, &client)
 			return a.RunCommandDisable()
 		},
 	}

sztp-agent/cmd/enable.go

@@ -34,7 +34,8 @@ func Enable() *cobra.Command {
 		Use:   "enable",
 		Short: "Run the enable command",
 		RunE: func(_ *cobra.Command, _ []string) error {
-			a := secureagent.NewAgent(bootstrapURL, serialNumber, dhcpLeaseFile, devicePassword, devicePrivateKey, deviceEndEntityCert, bootstrapTrustAnchorCert)
+			client := secureagent.NewHTTPClient(bootstrapTrustAnchorCert, deviceEndEntityCert, devicePrivateKey)
+			a := secureagent.NewAgent(bootstrapURL, serialNumber, dhcpLeaseFile, devicePassword, devicePrivateKey, deviceEndEntityCert, bootstrapTrustAnchorCert, &client)
 			return a.RunCommandEnable()
 		},
 	}

sztp-agent/cmd/run.go

@@ -59,7 +59,8 @@ func Run() *cobra.Command {
 					return fmt.Errorf("must not be folder: %q", filePath)
 				}
 			}
-			a := secureagent.NewAgent(bootstrapURL, serialNumber, dhcpLeaseFile, devicePassword, devicePrivateKey, deviceEndEntityCert, bootstrapTrustAnchorCert)
+			client := secureagent.NewHTTPClient(bootstrapTrustAnchorCert, deviceEndEntityCert, devicePrivateKey)
+			a := secureagent.NewAgent(bootstrapURL, serialNumber, dhcpLeaseFile, devicePassword, devicePrivateKey, deviceEndEntityCert, bootstrapTrustAnchorCert, &client)
 			return a.RunCommand()
 		},
 	}

sztp-agent/cmd/status.go

@@ -34,7 +34,8 @@ func Status() *cobra.Command {
 		Use:   "status",
 		Short: "Run the status command",
 		RunE: func(_ *cobra.Command, _ []string) error {
-			a := secureagent.NewAgent(bootstrapURL, serialNumber, dhcpLeaseFile, devicePassword, devicePrivateKey, deviceEndEntityCert, bootstrapTrustAnchorCert)
+			client := secureagent.NewHTTPClient(bootstrapTrustAnchorCert, deviceEndEntityCert, devicePrivateKey)
+			a := secureagent.NewAgent(bootstrapURL, serialNumber, dhcpLeaseFile, devicePassword, devicePrivateKey, deviceEndEntityCert, bootstrapTrustAnchorCert, &client)
 			return a.RunCommandStatus()
 		},
 	}

sztp-agent/pkg/secureagent/agent.go

@@ -9,6 +9,10 @@ Copyright (C) 2022 Red Hat.
 // Package secureagent implements the secure agent
 package secureagent
 
+import (
+	"net/http"
+)
+
 const (
 	CONTENT_TYPE_YANG = "application/yang-data+json"
 	OS_RELEASE_FILE   = "/etc/os-release"
@@ -68,6 +72,11 @@ type BootstrapServerErrorOutput struct {
 	} `json:"ietf-restconf:errors"`
 }
 
+type HttpClient interface {
+	Get(uri string) (*http.Response, error)
+	Do(req *http.Request) (*http.Response, error)
+}
+
 // Agent is the basic structure to define an agent instance
 type Agent struct {
 	InputBootstrapURL             string                        // Bootstrap complete URL given by USER
@@ -83,10 +92,10 @@ type Agent struct {
 	ProgressJSON                  ProgressJSON                  // ProgressJson structure
 	BootstrapServerOnboardingInfo BootstrapServerOnboardingInfo // BootstrapServerOnboardingInfo structure
 	BootstrapServerRedirectInfo   BootstrapServerRedirectInfo   // BootstrapServerRedirectInfo structure
-
+	HttpClient                    HttpClient
 }
 
-func NewAgent(bootstrapURL, serialNumber, dhcpLeaseFile, devicePassword, devicePrivateKey, deviceEndEntityCert, bootstrapTrustAnchorCert string) *Agent {
+func NewAgent(bootstrapURL, serialNumber, dhcpLeaseFile, devicePassword, devicePrivateKey, deviceEndEntityCert, bootstrapTrustAnchorCert string, httpClient HttpClient) *Agent {
 	return &Agent{
 		InputBootstrapURL:             bootstrapURL,
 		BootstrapURL:                  "",
@@ -101,6 +110,7 @@ func NewAgent(bootstrapURL, serialNumber, dhcpLeaseFile, devicePassword, deviceP
 		ProgressJSON:                  ProgressJSON{},
 		BootstrapServerRedirectInfo:   BootstrapServerRedirectInfo{},
 		BootstrapServerOnboardingInfo: BootstrapServerOnboardingInfo{},
+		HttpClient:                    httpClient,
 	}
 }
 

sztp-agent/pkg/secureagent/agent_test.go

@@ -9,6 +9,7 @@ Copyright (C) 2022 Red Hat.
 package secureagent
 
 import (
+	"net/http"
 	"reflect"
 	"testing"
 )
@@ -829,6 +830,7 @@ func TestNewAgent(t *testing.T) {
 		deviceEndEntityCert      string
 		bootstrapTrustAnchorCert string
 	}
+	client := http.Client{}
 	tests := []struct {
 		name string
 		args args
@@ -856,12 +858,13 @@ func TestNewAgent(t *testing.T) {
 				ContentTypeReq:           "application/yang-data+json",
 				InputJSONContent:         generateInputJSONContent(),
 				DhcpLeaseFile:            "TestDhcpLeaseFile",
+				HttpClient:               &client,
 			},
 		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			if got := NewAgent(tt.args.bootstrapURL, tt.args.serialNumber, tt.args.dhcpLeaseFile, tt.args.devicePassword, tt.args.devicePrivateKey, tt.args.deviceEndEntityCert, tt.args.bootstrapTrustAnchorCert); !reflect.DeepEqual(got, tt.want) {
+			if got := NewAgent(tt.args.bootstrapURL, tt.args.serialNumber, tt.args.dhcpLeaseFile, tt.args.devicePassword, tt.args.devicePrivateKey, tt.args.deviceEndEntityCert, tt.args.bootstrapTrustAnchorCert, &client); !reflect.DeepEqual(got, tt.want) {
 				t.Errorf("NewAgent() = %v, want %v", got, tt.want)
 			}
 		})

sztp-agent/pkg/secureagent/configuration_test.go

@@ -1,6 +1,7 @@
 package secureagent
 
 import (
+	"net/http"
 	"testing"
 )
 
@@ -151,6 +152,7 @@ func TestAgent_copyConfigurationFile(t *testing.T) {
 				ProgressJSON:                  tt.fields.ProgressJSON,
 				BootstrapServerOnboardingInfo: tt.fields.BootstrapServerOnboardingInfo,
 				BootstrapServerRedirectInfo:   tt.fields.BootstrapServerRedirectInfo,
+				HttpClient:                    &http.Client{},
 			}
 			if err := a.copyConfigurationFile(); (err != nil) != tt.wantErr {
 				t.Errorf("copyConfigurationFile() error = %v, wantErr %v", err, tt.wantErr)
@@ -368,6 +370,7 @@ func TestAgent_launchScriptsConfiguration(t *testing.T) {
 				ProgressJSON:                  tt.fields.ProgressJSON,
 				BootstrapServerOnboardingInfo: tt.fields.BootstrapServerOnboardingInfo,
 				BootstrapServerRedirectInfo:   tt.fields.BootstrapServerRedirectInfo,
+				HttpClient:                    &http.Client{},
 			}
 			if err := a.launchScriptsConfiguration(tt.args.typeOf); (err != nil) != tt.wantErr {
 				t.Errorf("launchScriptsConfiguration() error = %v, wantErr %v", err, tt.wantErr)

sztp-agent/pkg/secureagent/daemon_test.go

@@ -418,6 +418,7 @@ func TestAgent_doReqBootstrap(t *testing.T) {
 				ContentTypeReq:           tt.fields.ContentTypeReq,
 				InputJSONContent:         tt.fields.InputJSONContent,
 				DhcpLeaseFile:            tt.fields.DhcpLeaseFile,
+				HttpClient:               &http.Client{},
 			}
 			if err := a.doRequestBootstrapServerOnboardingInfo(); (err != nil) != tt.wantErr {
 				t.Errorf("doRequestBootstrapServer() error = %v, wantErr %v", err, tt.wantErr)

sztp-agent/pkg/secureagent/image.go

@@ -8,13 +8,10 @@ Copyright (C) 2022 Red Hat.
 package secureagent
 
 import (
-	"crypto/tls"
-	"crypto/x509"
 	"errors"
 	"fmt"
 	"io"
 	"log"
-	"net/http"
 	"os"
 	"path/filepath"
 	"strconv"
@@ -37,27 +34,7 @@ func (a *Agent) downloadAndValidateImage() error {
 			return err
 		}
 
-		caCert, _ := os.ReadFile(a.GetBootstrapTrustAnchorCert())
-		caCertPool := x509.NewCertPool()
-		caCertPool.AppendCertsFromPEM(caCert)
-		cert, _ := tls.LoadX509KeyPair(a.GetDeviceEndEntityCert(), a.GetDevicePrivateKey())
-
-		check := http.Client{
-			CheckRedirect: func(r *http.Request, _ []*http.Request) error {
-				r.URL.Opaque = r.URL.Path
-				return nil
-			},
-			Transport: &http.Transport{
-				TLSClientConfig: &tls.Config{
-					//nolint:gosec
-					InsecureSkipVerify: true, // TODO: remove skip verify
-					RootCAs:            caCertPool,
-					Certificates:       []tls.Certificate{cert},
-				},
-			},
-		}
-
-		response, err := check.Get(item)
+		response, err := a.HttpClient.Get(item)
 		if err != nil {
 			return err
 		}

sztp-agent/pkg/secureagent/image_test.go

@@ -9,7 +9,7 @@ import (
 //nolint:funlen
 func TestAgent_downloadAndValidateImage(t *testing.T) {
 	svr := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		if r.URL.Path == "/imageOK" {
+		if r.URL.Path == "/imageOK" || r.URL.Path == "/report-progress" {
 			w.WriteHeader(200)
 		} else {
 			w.WriteHeader(400)
@@ -309,6 +309,7 @@ func TestAgent_downloadAndValidateImage(t *testing.T) {
 				ProgressJSON:                  tt.fields.ProgressJSON,
 				BootstrapServerOnboardingInfo: tt.fields.BootstrapServerOnboardingInfo,
 				BootstrapServerRedirectInfo:   tt.fields.BootstrapServerRedirectInfo,
+				HttpClient:                    &http.Client{},
 			}
 			if err := a.downloadAndValidateImage(); (err != nil) != tt.wantErr {
 				t.Errorf("downloadAndValidateImage() error = %v, wantErr %v", err, tt.wantErr)

sztp-agent/pkg/secureagent/progress_test.go

@@ -158,6 +158,7 @@ func TestAgent_doReportProgress(t *testing.T) {
 				InputJSONContent:         tt.fields.InputJSONContent,
 				DhcpLeaseFile:            tt.fields.DhcpLeaseFile,
 				ProgressJSON:             tt.fields.ProgressJSON,
+				HttpClient:               &http.Client{},
 			}
 			if err := a.doReportProgress(ProgressTypeBootstrapInitiated, "Bootstrap Initiated"); (err != nil) != tt.wantErr {
 				t.Errorf("doReportProgress() error = %v, wantErr %v", err, tt.wantErr)

sztp-agent/pkg/secureagent/tls.go

@@ -18,10 +18,35 @@
 	"log"
 	"net/http"
 	"os"
+	"path/filepath"
 	"strconv"
 	"strings"
 )
 
+// NewHTTPClient instantiate a new HTTP Client
+func NewHTTPClient(bootstrapTrustAnchorCert string, deviceEndEntityCert string, devicePrivateKey string) http.Client {
+	certPath := filepath.Clean(bootstrapTrustAnchorCert)
+	caCert, _ := os.ReadFile(certPath)
+	caCertPool := x509.NewCertPool()
+	caCertPool.AppendCertsFromPEM(caCert)
+	cert, _ := tls.LoadX509KeyPair(deviceEndEntityCert, devicePrivateKey)
+	client := http.Client{
+		CheckRedirect: func(r *http.Request, _ []*http.Request) error {
+			r.URL.Opaque = r.URL.Path
+			return nil
+		},
+		Transport: &http.Transport{
+			TLSClientConfig: &tls.Config{
+				//nolint:gosec
+				InsecureSkipVerify: true, // TODO: remove skip verify
+				RootCAs:            caCertPool,
+				Certificates:       []tls.Certificate{cert},
+			},
+		},
+	}
+	return client
+}
+
 func (a *Agent) doTLSRequest(input string, url string, empty bool) (*BootstrapServerPostOutput, error) {
 	var postResponse BootstrapServerPostOutput
 	var errorResponse BootstrapServerErrorOutput
@@ -38,20 +63,7 @@
 	r.SetBasicAuth(a.GetSerialNumber(), a.GetDevicePassword())
 	r.Header.Add("Content-Type", a.GetContentTypeReq())
 
-	caCert, _ := os.ReadFile(a.GetBootstrapTrustAnchorCert())
-	caCertPool := x509.NewCertPool()
-	caCertPool.AppendCertsFromPEM(caCert)
-	cert, _ := tls.LoadX509KeyPair(a.GetDeviceEndEntityCert(), a.GetDevicePrivateKey())
-
-	client := &http.Client{
-		Transport: &http.Transport{
-			TLSClientConfig: &tls.Config{ //nolint:gosec
-				RootCAs:      caCertPool,
-				Certificates: []tls.Certificate{cert},
-			},
-		},
-	}
-	res, err := client.Do(r)
+	res, err := a.HttpClient.Do(r)
 	if err != nil {
 		log.Println("Error doing the request", err.Error())
 		return nil, err