Support insecure Docker registries

auth/auth.go

@@ -7,8 +7,12 @@ import (
 
 	"github.com/ivanilves/lstags/auth/basic"
 	"github.com/ivanilves/lstags/auth/bearer"
+	"github.com/ivanilves/lstags/auth/none"
 )
 
+// WebSchema defines how do we connect to remote web servers
+var WebSchema = "https://"
+
 // TokenResponse is an abstraction for aggregated token-related information we get from authentication services
 type TokenResponse interface {
 	Method() string
@@ -19,7 +23,7 @@ type TokenResponse interface {
 func parseAuthHeader(headers http.Header) (string, string, error) {
 	header, defined := headers["Www-Authenticate"]
 	if !defined {
-		return "", "", errors.New("Missing 'Www-Authenticate' header")
+		return "None", "realm=none", nil
 	}
 	fields := strings.SplitN(header[0], " ", 2)
 	if len(fields) != 2 {
@@ -63,7 +67,7 @@ func validateParams(method string, params map[string]string) (map[string]string,
 // * detects authentication type (e.g. Bearer or Basic)
 // * delegates actual authentication to type-specific implementation
 func NewToken(registry, repository, username, password string) (TokenResponse, error) {
-	url := "https://" + registry + "/v2"
+	url := WebSchema + registry + "/v2"
 
 	resp, err := http.Get(url)
 	if err != nil {
@@ -80,6 +84,8 @@ func NewToken(registry, repository, username, password string) (TokenResponse, e
 	}
 
 	switch method {
+	case "None":
+		return none.RequestToken()
 	case "Basic":
 		return basic.RequestToken(url, username, password)
 	case "Bearer":

auth/basic/basic.go

@@ -8,7 +8,7 @@ import (
 
 // TokenResponse implementation for Basic authentication
 type TokenResponse struct {
-	T string `json:"token"`
+	T string
 }
 
 // Method is set to "Basic"

auth/none/none.go

@@ -0,0 +1,25 @@
+package none
+
+// TokenResponse implementation for None authentication
+type TokenResponse struct {
+}
+
+// Method is set to "None"
+func (tr TokenResponse) Method() string {
+	return "None"
+}
+
+// Token is set to a dummy string
+func (tr TokenResponse) Token() string {
+	return ""
+}
+
+// ExpiresIn is set to 0 for None authentication
+func (tr TokenResponse) ExpiresIn() int {
+	return 0
+}
+
+// RequestToken does pretty little here...
+func RequestToken() (*TokenResponse, error) {
+	return &TokenResponse{}, nil
+}

main.go

@@ -17,14 +17,15 @@ import (
 )
 
 type options struct {
-	DefaultRegistry string `short:"r" long:"default-registry" default:"registry.hub.docker.com" description:"Docker registry to use by default" env:"DEFAULT_REGISTRY"`
-	Username        string `short:"u" long:"username" default:"" description:"Docker registry username" env:"USERNAME"`
-	Password        string `short:"p" long:"password" default:"" description:"Docker registry password" env:"PASSWORD"`
-	DockerJSON      string `shord:"j" long:"docker-json" default:"~/.docker/config.json" env:"DOCKER_JSON"`
-	Concurrency     int    `short:"c" long:"concurrency" default:"32" description:"Concurrent request limit while querying registry" env:"CONCURRENCY"`
-	TraceRequests   bool   `short:"T" long:"trace-requests" description:"Trace registry HTTP requests" env:"TRACE_REQUESTS"`
-	Version         bool   `short:"V" long:"version" description:"Show version and exit"`
-	Positional      struct {
+	DefaultRegistry  string `short:"r" long:"default-registry" default:"registry.hub.docker.com" description:"Docker registry to use by default" env:"DEFAULT_REGISTRY"`
+	Username         string `short:"u" long:"username" default:"" description:"Docker registry username" env:"USERNAME"`
+	Password         string `short:"p" long:"password" default:"" description:"Docker registry password" env:"PASSWORD"`
+	DockerJSON       string `shord:"j" long:"docker-json" default:"~/.docker/config.json" env:"DOCKER_JSON"`
+	Concurrency      int    `short:"c" long:"concurrency" default:"32" description:"Concurrent request limit while querying registry" env:"CONCURRENCY"`
+	InsecureRegistry bool   `short:"i" long:"insecure-registry" description:"Use insecure plain-HTTP registriy" env:"INSECURE_REGISTRY"`
+	TraceRequests    bool   `short:"T" long:"trace-requests" description:"Trace registry HTTP requests" env:"TRACE_REQUESTS"`
+	Version          bool   `short:"V" long:"version" description:"Show version and exit"`
+	Positional       struct {
 		Repository string `positional-arg-name:"REPOSITORY" description:"Docker repository to list tags from"`
 	} `positional-args:"yes"`
 }
@@ -137,6 +138,11 @@ func main() {
 		suicide(errors.New("You should provide a repository name, e.g. 'nginx' or 'mesosphere/chronos'"))
 	}
 
+	if o.InsecureRegistry {
+		auth.WebSchema = "http://"
+		registry.WebSchema = "http://"
+	}
+
 	registry.TraceRequests = o.TraceRequests
 
 	repository, filter, err := trimFilter(o.Positional.Repository)

tag/registry/registry.go

@@ -17,6 +17,9 @@ import (
 	"github.com/ivanilves/lstags/tag"
 )
 
+// WebSchema defines how do we connect to remote web servers
+var WebSchema = "https://"
+
 // TraceRequests defines if we should print out HTTP request URLs and response headers/bodies
 var TraceRequests = false
 
@@ -101,7 +104,7 @@ func parseTagNamesJSON(data io.ReadCloser) ([]string, error) {
 }
 
 func fetchTagNames(registry, repo, authorization string) ([]string, error) {
-	url := "https://" + registry + "/v2/" + repo + "/tags/list"
+	url := WebSchema + registry + "/v2/" + repo + "/tags/list"
 
 	resp, err := httpRequest(url, authorization, "v2")
 	if err != nil {
@@ -173,7 +176,7 @@ func fetchDigest(url, authorization string) (string, error) {
 }
 
 func fetchDetails(registry, repo, tagName, authorization string) (string, int64, error) {
-	url := "https://" + registry + "/v2/" + repo + "/manifests/" + tagName
+	url := WebSchema + registry + "/v2/" + repo + "/manifests/" + tagName
 
 	dc := make(chan string, 0)
 	cc := make(chan int64, 0)