fix some linting issues

/go/src/github.com/docker/docker-credential-helper/pass/pass.go:1:1: package comment should be of the form "Package pass ..."
    /go/src/github.com/docker/docker-credential-helper/pass/pass.go:22:7: don't use ALL_CAPS in Go names; use CamelCase
    /go/src/github.com/docker/docker-credential-helper/pass/pass.go:22:7: exported const PASS_FOLDER should have comment or be unexported
    /go/src/github.com/docker/docker-credential-helper/pass/pass.go:82:1: receiver name h should be consistent with previous receiver name p for Pass
    /go/src/github.com/docker/docker-credential-helper/pass/pass.go:94:1: receiver name h should be consistent with previous receiver name p for Pass
    /go/src/github.com/docker/docker-credential-helper/pass/pass.go:131:1: receiver name h should be consistent with previous receiver name p for Pass
    /go/src/github.com/docker/docker-credential-helper/pass/pass.go:161:1: receiver name h should be consistent with previous receiver name p for Pass
    /go/src/github.com/docker/docker-credential-helper/registryurl/url_go18.go:9:1: exported function GetHostname should have comment or be unexported
    /go/src/github.com/docker/docker-credential-helper/registryurl/url_go18.go:13:1: exported function GetPort should have comment or be unexported
    /go/src/github.com/docker/docker-credential-helper/secretservice/secretservice_linux_test.go:22:2: don't use underscores in Go names; var old_auths should be oldAuths
    /go/src/github.com/docker/docker-credential-helper/secretservice/secretservice_linux_test.go:64:2: don't use underscores in Go names; var new_auths should be newAuths

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

pass/pass.go

@@ -1,7 +1,7 @@
-// A `pass` based credential helper. Passwords are stored as arguments to pass
-// of the form: "$PASS_FOLDER/base64-url(serverURL)/username". We base64-url
-// encode the serverURL, because under the hood pass uses files and folders, so
-// /s will get translated into additional folders.
+// Package pass implements a `pass` based credential helper. Passwords are stored
+// as arguments to pass of the form: "$PASS_FOLDER/base64-url(serverURL)/username".
+// We base64-url encode the serverURL, because under the hood pass uses files and
+// folders, so /s will get translated into additional folders.
 package pass
 
 import (
@@ -19,7 +19,8 @@ import (
 	"github.com/docker/docker-credential-helpers/credentials"
 )
 
-const PASS_FOLDER = "docker-credential-helpers"
+// PASS_FOLDER contains the directory where credentials are stored
+const PASS_FOLDER = "docker-credential-helpers" //nolint: golint
 
 // Pass handles secrets using Linux secret-service as a store.
 type Pass struct{}
@@ -79,25 +80,25 @@ func (p Pass) runPassHelper(stdinContent string, args ...string) (string, error)
 }
 
 // Add adds new credentials to the keychain.
-func (h Pass) Add(creds *credentials.Credentials) error {
+func (p Pass) Add(creds *credentials.Credentials) error {
 	if creds == nil {
 		return errors.New("missing credentials")
 	}
 
 	encoded := base64.URLEncoding.EncodeToString([]byte(creds.ServerURL))
 
-	_, err := h.runPass(creds.Secret, "insert", "-f", "-m", path.Join(PASS_FOLDER, encoded, creds.Username))
+	_, err := p.runPass(creds.Secret, "insert", "-f", "-m", path.Join(PASS_FOLDER, encoded, creds.Username))
 	return err
 }
 
 // Delete removes credentials from the store.
-func (h Pass) Delete(serverURL string) error {
+func (p Pass) Delete(serverURL string) error {
 	if serverURL == "" {
 		return errors.New("missing server url")
 	}
 
 	encoded := base64.URLEncoding.EncodeToString([]byte(serverURL))
-	_, err := h.runPass("", "rm", "-rf", path.Join(PASS_FOLDER, encoded))
+	_, err := p.runPass("", "rm", "-rf", path.Join(PASS_FOLDER, encoded))
 	return err
 }
 
@@ -128,7 +129,7 @@ func listPassDir(args ...string) ([]os.FileInfo, error) {
 }
 
 // Get returns the username and secret to use for a given registry server URL.
-func (h Pass) Get(serverURL string) (string, string, error) {
+func (p Pass) Get(serverURL string) (string, string, error) {
 	if serverURL == "" {
 		return "", "", errors.New("missing server url")
 	}
@@ -153,12 +154,12 @@ func (h Pass) Get(serverURL string) (string, string, error) {
 	}
 
 	actual := strings.TrimSuffix(usernames[0].Name(), ".gpg")
-	secret, err := h.runPass("", "show", path.Join(PASS_FOLDER, encoded, actual))
+	secret, err := p.runPass("", "show", path.Join(PASS_FOLDER, encoded, actual))
 	return actual, secret, err
 }
 
 // List returns the stored URLs and corresponding usernames for a given credentials label
-func (h Pass) List() (map[string]string, error) {
+func (p Pass) List() (map[string]string, error) {
 	servers, err := listPassDir()
 	if err != nil {
 		return nil, err

registryurl/url_go18.go

@@ -6,10 +6,12 @@ import (
 	url "net/url"
 )
 
+// GetHostname returns the hostname of the URL
 func GetHostname(u *url.URL) string {
 	return u.Hostname()
 }
 
+// GetPort returns the port number of the URL
 func GetPort(u *url.URL) string {
 	return u.Port()
 }

secretservice/secretservice_linux_test.go

@@ -19,14 +19,14 @@ func TestSecretServiceHelper(t *testing.T) {
 	helper := Secretservice{}
 
 	// Check how many docker credentials we have when starting the test
-	old_auths, err := helper.List()
+	oldAuths, err := helper.List()
 	if err != nil {
 		t.Fatal(err)
 	}
 
 	// If any docker credentials with the tests values we are providing, we
 	// remove them as they probably come from a previous failed test
-	for k, v := range old_auths {
+	for k, v := range oldAuths {
 		if strings.Compare(k, creds.ServerURL) == 0 && strings.Compare(v, creds.Username) == 0 {
 
 			if err := helper.Delete(creds.ServerURL); err != nil {
@@ -36,7 +36,7 @@ func TestSecretServiceHelper(t *testing.T) {
 	}
 
 	// Check again how many docker credentials we have when starting the test
-	old_auths, err = helper.List()
+	oldAuths, err = helper.List()
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -61,11 +61,11 @@ func TestSecretServiceHelper(t *testing.T) {
 	}
 
 	// We should have one more credential than before adding
-	new_auths, err := helper.List()
-	if err != nil || (len(new_auths)-len(old_auths) != 1) {
+	newAuths, err := helper.List()
+	if err != nil || (len(newAuths)-len(oldAuths) != 1) {
 		t.Fatal(err)
 	}
-	old_auths = new_auths
+	oldAuths = newAuths
 
 	// Deleting the credentials associated to current server url should succeed
 	if err := helper.Delete(creds.ServerURL); err != nil {
@@ -73,8 +73,8 @@ func TestSecretServiceHelper(t *testing.T) {
 	}
 
 	// We should have one less credential than before deleting
-	new_auths, err = helper.List()
-	if err != nil || (len(old_auths)-len(new_auths) != 1) {
+	newAuths, err = helper.List()
+	if err != nil || (len(oldAuths)-len(newAuths) != 1) {
 		t.Fatal(err)
 	}
 }