forked from TrueCloudLab/distribution
commit
e9bdaeb6c6
6 changed files with 203 additions and 44 deletions
10
docs/auth.go
10
docs/auth.go
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@ -7,6 +7,7 @@ import (
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"fmt"
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"io/ioutil"
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"net/http"
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"net/url"
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"os"
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"path"
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"strings"
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@ -27,8 +28,17 @@ const (
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var (
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ErrConfigFileMissing = errors.New("The Auth config file is missing")
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IndexServerURL *url.URL
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)
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func init() {
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url, err := url.Parse(INDEXSERVER)
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if err != nil {
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panic(err)
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}
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IndexServerURL = url
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}
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type AuthConfig struct {
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Username string `json:"username,omitempty"`
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Password string `json:"password,omitempty"`
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121
docs/endpoint.go
121
docs/endpoint.go
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@ -4,6 +4,7 @@ import (
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"encoding/json"
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"fmt"
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"io/ioutil"
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"net"
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"net/http"
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"net/url"
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"strings"
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@ -11,6 +12,9 @@ import (
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"github.com/docker/docker/pkg/log"
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)
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// for mocking in unit tests
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var lookupIP = net.LookupIP
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// scans string for api version in the URL path. returns the trimmed hostname, if version found, string and API version.
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func scanForApiVersion(hostname string) (string, APIVersion) {
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var (
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@ -33,9 +37,40 @@ func scanForApiVersion(hostname string) (string, APIVersion) {
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return hostname, DefaultAPIVersion
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}
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func NewEndpoint(hostname string, secure bool) (*Endpoint, error) {
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func NewEndpoint(hostname string, insecureRegistries []string) (*Endpoint, error) {
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endpoint, err := newEndpoint(hostname, insecureRegistries)
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if err != nil {
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return nil, err
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}
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// Try HTTPS ping to registry
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endpoint.URL.Scheme = "https"
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if _, err := endpoint.Ping(); err != nil {
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//TODO: triggering highland build can be done there without "failing"
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if endpoint.secure {
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// If registry is secure and HTTPS failed, show user the error and tell them about `--insecure-registry`
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// in case that's what they need. DO NOT accept unknown CA certificates, and DO NOT fallback to HTTP.
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return nil, fmt.Errorf("Invalid registry endpoint %s: %v. If this private registry supports only HTTP or HTTPS with an unknown CA certificate, please add `--insecure-registry %s` to the daemon's arguments. In the case of HTTPS, if you have access to the registry's CA certificate, no need for the flag; simply place the CA certificate at /etc/docker/certs.d/%s/ca.crt", endpoint, err, endpoint.URL.Host, endpoint.URL.Host)
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}
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// If registry is insecure and HTTPS failed, fallback to HTTP.
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log.Debugf("Error from registry %q marked as insecure: %v. Insecurely falling back to HTTP", endpoint, err)
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endpoint.URL.Scheme = "http"
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_, err2 := endpoint.Ping()
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if err2 == nil {
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return endpoint, nil
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}
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return nil, fmt.Errorf("Invalid registry endpoint %q. HTTPS attempt: %v. HTTP attempt: %v", endpoint, err, err2)
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}
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return endpoint, nil
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}
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func newEndpoint(hostname string, insecureRegistries []string) (*Endpoint, error) {
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var (
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endpoint = Endpoint{secure: secure}
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endpoint = Endpoint{}
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trimmedHostname string
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err error
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)
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@ -47,30 +82,10 @@ func NewEndpoint(hostname string, secure bool) (*Endpoint, error) {
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if err != nil {
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return nil, err
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}
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// Try HTTPS ping to registry
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endpoint.URL.Scheme = "https"
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if _, err := endpoint.Ping(); err != nil {
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//TODO: triggering highland build can be done there without "failing"
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if secure {
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// If registry is secure and HTTPS failed, show user the error and tell them about `--insecure-registry`
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// in case that's what they need. DO NOT accept unknown CA certificates, and DO NOT fallback to HTTP.
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return nil, fmt.Errorf("Invalid registry endpoint %s: %v. If this private registry supports only HTTP or HTTPS with an unknown CA certificate, please add `--insecure-registry %s` to the daemon's arguments. In the case of HTTPS, if you have access to the registry's CA certificate, no need for the flag; simply place the CA certificate at /etc/docker/certs.d/%s/ca.crt", endpoint, err, endpoint.URL.Host, endpoint.URL.Host)
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}
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// If registry is insecure and HTTPS failed, fallback to HTTP.
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log.Debugf("Error from registry %q marked as insecure: %v. Insecurely falling back to HTTP", endpoint, err)
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endpoint.URL.Scheme = "http"
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_, err2 := endpoint.Ping()
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if err2 == nil {
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return &endpoint, nil
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}
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return nil, fmt.Errorf("Invalid registry endpoint %q. HTTPS attempt: %v. HTTP attempt: %v", endpoint, err, err2)
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endpoint.secure, err = isSecure(endpoint.URL.Host, insecureRegistries)
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if err != nil {
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return nil, err
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}
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return &endpoint, nil
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}
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@ -141,18 +156,58 @@ func (e Endpoint) Ping() (RegistryInfo, error) {
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return info, nil
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}
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// IsSecure returns false if the provided hostname is part of the list of insecure registries.
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// isSecure returns false if the provided hostname is part of the list of insecure registries.
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// Insecure registries accept HTTP and/or accept HTTPS with certificates from unknown CAs.
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func IsSecure(hostname string, insecureRegistries []string) bool {
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if hostname == IndexServerAddress() {
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return true
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//
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// The list of insecure registries can contain an element with CIDR notation to specify a whole subnet.
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// If the subnet contains one of the IPs of the registry specified by hostname, the latter is considered
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// insecure.
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//
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// hostname should be a URL.Host (`host:port` or `host`)
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func isSecure(hostname string, insecureRegistries []string) (bool, error) {
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if hostname == IndexServerURL.Host {
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return true, nil
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}
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for _, h := range insecureRegistries {
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if hostname == h {
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return false
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host, _, err := net.SplitHostPort(hostname)
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if err != nil {
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// assume hostname is of the form `host` without the port and go on.
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host = hostname
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}
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addrs, err := lookupIP(host)
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if err != nil {
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ip := net.ParseIP(host)
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if ip == nil {
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// if resolving `host` fails, error out, since host is to be net.Dial-ed anyway
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return true, fmt.Errorf("issecure: could not resolve %q: %v", host, err)
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}
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addrs = []net.IP{ip}
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}
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if len(addrs) == 0 {
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return true, fmt.Errorf("issecure: could not resolve %q", host)
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}
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for _, addr := range addrs {
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for _, r := range insecureRegistries {
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// hostname matches insecure registry
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if hostname == r {
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return false, nil
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}
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// now assume a CIDR was passed to --insecure-registry
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_, ipnet, err := net.ParseCIDR(r)
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if err != nil {
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// if could not parse it as a CIDR, even after removing
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// assume it's not a CIDR and go on with the next candidate
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continue
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}
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// check if the addr falls in the subnet
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if ipnet.Contains(addr) {
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return false, nil
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}
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}
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}
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return true
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return true, nil
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}
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27
docs/endpoint_test.go
Normal file
27
docs/endpoint_test.go
Normal file
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@ -0,0 +1,27 @@
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package registry
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import "testing"
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func TestEndpointParse(t *testing.T) {
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testData := []struct {
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str string
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expected string
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}{
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{IndexServerAddress(), IndexServerAddress()},
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{"http://0.0.0.0:5000", "http://0.0.0.0:5000/v1/"},
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{"0.0.0.0:5000", "https://0.0.0.0:5000/v1/"},
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}
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for _, td := range testData {
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e, err := newEndpoint(td.str, insecureRegistries)
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if err != nil {
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t.Errorf("%q: %s", td.str, err)
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}
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if e == nil {
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t.Logf("something's fishy, endpoint for %q is nil", td.str)
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continue
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}
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if e.String() != td.expected {
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t.Errorf("expected %q, got %q", td.expected, e.String())
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}
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}
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}
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@ -2,9 +2,11 @@ package registry
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import (
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"encoding/json"
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"errors"
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"fmt"
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"io"
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"io/ioutil"
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"net"
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"net/http"
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"net/http/httptest"
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"net/url"
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@ -19,8 +21,9 @@ import (
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)
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var (
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testHttpServer *httptest.Server
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testLayers = map[string]map[string]string{
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testHTTPServer *httptest.Server
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insecureRegistries []string
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testLayers = map[string]map[string]string{
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"77dbf71da1d00e3fbddc480176eac8994025630c6590d11cfc8fe1209c2a1d20": {
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"json": `{"id":"77dbf71da1d00e3fbddc480176eac8994025630c6590d11cfc8fe1209c2a1d20",
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"comment":"test base image","created":"2013-03-23T12:53:11.10432-07:00",
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@ -79,6 +82,11 @@ var (
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"latest": "42d718c941f5c532ac049bf0b0ab53f0062f09a03afd4aa4a02c098e46032b9d",
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},
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}
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mockHosts = map[string][]net.IP{
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"": {net.ParseIP("0.0.0.0")},
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"localhost": {net.ParseIP("127.0.0.1"), net.ParseIP("::1")},
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"example.com": {net.ParseIP("42.42.42.42")},
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}
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)
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func init() {
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@ -99,7 +107,31 @@ func init() {
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// /v2/
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r.HandleFunc("/v2/version", handlerGetPing).Methods("GET")
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testHttpServer = httptest.NewServer(handlerAccessLog(r))
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testHTTPServer = httptest.NewServer(handlerAccessLog(r))
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URL, err := url.Parse(testHTTPServer.URL)
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if err != nil {
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panic(err)
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}
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insecureRegistries = []string{URL.Host}
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// override net.LookupIP
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lookupIP = func(host string) ([]net.IP, error) {
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if host == "127.0.0.1" {
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// I believe in future Go versions this will fail, so let's fix it later
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return net.LookupIP(host)
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}
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for h, addrs := range mockHosts {
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if host == h {
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return addrs, nil
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}
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for _, addr := range addrs {
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if addr.String() == host {
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return []net.IP{addr}, nil
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}
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}
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}
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return nil, errors.New("lookup: no such host")
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}
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}
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func handlerAccessLog(handler http.Handler) http.Handler {
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@ -111,7 +143,7 @@ func handlerAccessLog(handler http.Handler) http.Handler {
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}
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func makeURL(req string) string {
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return testHttpServer.URL + req
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return testHTTPServer.URL + req
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}
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func writeHeaders(w http.ResponseWriter) {
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@ -301,7 +333,7 @@ func handlerUsers(w http.ResponseWriter, r *http.Request) {
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}
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func handlerImages(w http.ResponseWriter, r *http.Request) {
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u, _ := url.Parse(testHttpServer.URL)
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u, _ := url.Parse(testHTTPServer.URL)
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w.Header().Add("X-Docker-Endpoints", fmt.Sprintf("%s , %s ", u.Host, "test.example.com"))
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w.Header().Add("X-Docker-Token", fmt.Sprintf("FAKE-SESSION-%d", time.Now().UnixNano()))
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if r.Method == "PUT" {
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@ -18,7 +18,7 @@ var (
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func spawnTestRegistrySession(t *testing.T) *Session {
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authConfig := &AuthConfig{}
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endpoint, err := NewEndpoint(makeURL("/v1/"), false)
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endpoint, err := NewEndpoint(makeURL("/v1/"), insecureRegistries)
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if err != nil {
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t.Fatal(err)
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}
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@ -30,7 +30,7 @@ func spawnTestRegistrySession(t *testing.T) *Session {
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}
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func TestPingRegistryEndpoint(t *testing.T) {
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ep, err := NewEndpoint(makeURL("/v1/"), false)
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ep, err := NewEndpoint(makeURL("/v1/"), insecureRegistries)
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if err != nil {
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t.Fatal(err)
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}
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@ -316,3 +316,40 @@ func TestAddRequiredHeadersToRedirectedRequests(t *testing.T) {
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}
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}
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}
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func TestIsSecure(t *testing.T) {
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tests := []struct {
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addr string
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insecureRegistries []string
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expected bool
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}{
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{IndexServerURL.Host, nil, true},
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{"example.com", []string{}, true},
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{"example.com", []string{"example.com"}, false},
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{"localhost", []string{"localhost:5000"}, false},
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{"localhost:5000", []string{"localhost:5000"}, false},
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{"localhost", []string{"example.com"}, false},
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{"127.0.0.1:5000", []string{"127.0.0.1:5000"}, false},
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{"localhost", nil, false},
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{"localhost:5000", nil, false},
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{"127.0.0.1", nil, false},
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{"localhost", []string{"example.com"}, false},
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{"127.0.0.1", []string{"example.com"}, false},
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{"example.com", nil, true},
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{"example.com", []string{"example.com"}, false},
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{"127.0.0.1", []string{"example.com"}, false},
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{"127.0.0.1:5000", []string{"example.com"}, false},
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{"example.com:5000", []string{"42.42.0.0/16"}, false},
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{"example.com", []string{"42.42.0.0/16"}, false},
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{"example.com:5000", []string{"42.42.42.42/8"}, false},
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{"127.0.0.1:5000", []string{"127.0.0.0/8"}, false},
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{"42.42.42.42:5000", []string{"42.1.1.1/8"}, false},
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}
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for _, tt := range tests {
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// TODO: remove this once we remove localhost insecure by default
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insecureRegistries := append(tt.insecureRegistries, "127.0.0.0/8")
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if sec, err := isSecure(tt.addr, insecureRegistries); err != nil || sec != tt.expected {
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t.Fatalf("isSecure failed for %q %v, expected %v got %v. Error: %v", tt.addr, insecureRegistries, tt.expected, sec, err)
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}
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}
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}
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@ -40,7 +40,7 @@ func (s *Service) Auth(job *engine.Job) engine.Status {
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job.GetenvJson("authConfig", authConfig)
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if addr := authConfig.ServerAddress; addr != "" && addr != IndexServerAddress() {
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endpoint, err := NewEndpoint(addr, IsSecure(addr, s.insecureRegistries))
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endpoint, err := NewEndpoint(addr, s.insecureRegistries)
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if err != nil {
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return job.Error(err)
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}
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@ -92,9 +92,7 @@ func (s *Service) Search(job *engine.Job) engine.Status {
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return job.Error(err)
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}
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secure := IsSecure(hostname, s.insecureRegistries)
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endpoint, err := NewEndpoint(hostname, secure)
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endpoint, err := NewEndpoint(hostname, s.insecureRegistries)
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if err != nil {
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return job.Error(err)
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}
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Reference in a new issue