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moby--moby/api/server/server.go
Dan Walsh 17abfc3ddc pass --change changes to the import job
Docker-DCO-1.1-Signed-off-by: Dan Walsh <dwalsh@redhat.com> (github: rhatdan)
2015-02-24 13:01:36 -05:00

1655 lines
48 KiB
Go

package server
import (
"bufio"
"bytes"
"encoding/base64"
"encoding/json"
"expvar"
"fmt"
"io"
"io/ioutil"
"net"
"net/http"
"net/http/pprof"
"os"
"strconv"
"strings"
"syscall"
"crypto/tls"
"crypto/x509"
"code.google.com/p/go.net/websocket"
"github.com/docker/libcontainer/user"
"github.com/gorilla/mux"
log "github.com/Sirupsen/logrus"
"github.com/docker/docker/api"
"github.com/docker/docker/daemon/networkdriver/portallocator"
"github.com/docker/docker/engine"
"github.com/docker/docker/pkg/listenbuffer"
"github.com/docker/docker/pkg/parsers"
"github.com/docker/docker/pkg/stdcopy"
"github.com/docker/docker/pkg/systemd"
"github.com/docker/docker/pkg/version"
"github.com/docker/docker/registry"
"github.com/docker/docker/utils"
)
var (
activationLock chan struct{}
)
type HttpServer struct {
srv *http.Server
l net.Listener
}
func (s *HttpServer) Serve() error {
return s.srv.Serve(s.l)
}
func (s *HttpServer) Close() error {
return s.l.Close()
}
type HttpApiFunc func(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error
func hijackServer(w http.ResponseWriter) (io.ReadCloser, io.Writer, error) {
conn, _, err := w.(http.Hijacker).Hijack()
if err != nil {
return nil, nil, err
}
// Flush the options to make sure the client sets the raw mode
conn.Write([]byte{})
return conn, conn, nil
}
func closeStreams(streams ...interface{}) {
for _, stream := range streams {
if tcpc, ok := stream.(interface {
CloseWrite() error
}); ok {
tcpc.CloseWrite()
} else if closer, ok := stream.(io.Closer); ok {
closer.Close()
}
}
}
// Check to make sure request's Content-Type is application/json
func checkForJson(r *http.Request) error {
ct := r.Header.Get("Content-Type")
// No Content-Type header is ok as long as there's no Body
if ct == "" {
if r.Body == nil || r.ContentLength == 0 {
return nil
}
}
// Otherwise it better be json
if api.MatchesContentType(ct, "application/json") {
return nil
}
return fmt.Errorf("Content-Type specified (%s) must be 'application/json'", ct)
}
//If we don't do this, POST method without Content-type (even with empty body) will fail
func parseForm(r *http.Request) error {
if r == nil {
return nil
}
if err := r.ParseForm(); err != nil && !strings.HasPrefix(err.Error(), "mime:") {
return err
}
return nil
}
func parseMultipartForm(r *http.Request) error {
if err := r.ParseMultipartForm(4096); err != nil && !strings.HasPrefix(err.Error(), "mime:") {
return err
}
return nil
}
func httpError(w http.ResponseWriter, err error) {
statusCode := http.StatusInternalServerError
// FIXME: this is brittle and should not be necessary.
// If we need to differentiate between different possible error types, we should
// create appropriate error types with clearly defined meaning.
errStr := strings.ToLower(err.Error())
if strings.Contains(errStr, "no such") {
statusCode = http.StatusNotFound
} else if strings.Contains(errStr, "bad parameter") {
statusCode = http.StatusBadRequest
} else if strings.Contains(errStr, "conflict") {
statusCode = http.StatusConflict
} else if strings.Contains(errStr, "impossible") {
statusCode = http.StatusNotAcceptable
} else if strings.Contains(errStr, "wrong login/password") {
statusCode = http.StatusUnauthorized
} else if strings.Contains(errStr, "hasn't been activated") {
statusCode = http.StatusForbidden
}
if err != nil {
log.Errorf("HTTP Error: statusCode=%d %s", statusCode, err.Error())
http.Error(w, err.Error(), statusCode)
}
}
func writeJSON(w http.ResponseWriter, code int, v engine.Env) error {
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(code)
return v.Encode(w)
}
func streamJSON(job *engine.Job, w http.ResponseWriter, flush bool) {
w.Header().Set("Content-Type", "application/json")
if flush {
job.Stdout.Add(utils.NewWriteFlusher(w))
} else {
job.Stdout.Add(w)
}
}
func getBoolParam(value string) (bool, error) {
if value == "" {
return false, nil
}
ret, err := strconv.ParseBool(value)
if err != nil {
return false, fmt.Errorf("Bad parameter")
}
return ret, nil
}
func postAuth(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
var (
authConfig, err = ioutil.ReadAll(r.Body)
job = eng.Job("auth")
stdoutBuffer = bytes.NewBuffer(nil)
)
if err != nil {
return err
}
job.Setenv("authConfig", string(authConfig))
job.Stdout.Add(stdoutBuffer)
if err = job.Run(); err != nil {
return err
}
if status := engine.Tail(stdoutBuffer, 1); status != "" {
var env engine.Env
env.Set("Status", status)
return writeJSON(w, http.StatusOK, env)
}
w.WriteHeader(http.StatusNoContent)
return nil
}
func getVersion(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
w.Header().Set("Content-Type", "application/json")
eng.ServeHTTP(w, r)
return nil
}
func postContainersKill(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if vars == nil {
return fmt.Errorf("Missing parameter")
}
if err := parseForm(r); err != nil {
return err
}
job := eng.Job("kill", vars["name"])
if sig := r.Form.Get("signal"); sig != "" {
job.Args = append(job.Args, sig)
}
if err := job.Run(); err != nil {
return err
}
w.WriteHeader(http.StatusNoContent)
return nil
}
func postContainersPause(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if vars == nil {
return fmt.Errorf("Missing parameter")
}
if err := parseForm(r); err != nil {
return err
}
job := eng.Job("pause", vars["name"])
if err := job.Run(); err != nil {
return err
}
w.WriteHeader(http.StatusNoContent)
return nil
}
func postContainersUnpause(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if vars == nil {
return fmt.Errorf("Missing parameter")
}
if err := parseForm(r); err != nil {
return err
}
job := eng.Job("unpause", vars["name"])
if err := job.Run(); err != nil {
return err
}
w.WriteHeader(http.StatusNoContent)
return nil
}
func getContainersExport(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if vars == nil {
return fmt.Errorf("Missing parameter")
}
job := eng.Job("export", vars["name"])
job.Stdout.Add(w)
if err := job.Run(); err != nil {
return err
}
return nil
}
func getImagesJSON(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := parseForm(r); err != nil {
return err
}
var (
err error
outs *engine.Table
job = eng.Job("images")
)
job.Setenv("filters", r.Form.Get("filters"))
// FIXME this parameter could just be a match filter
job.Setenv("filter", r.Form.Get("filter"))
job.Setenv("all", r.Form.Get("all"))
if version.GreaterThanOrEqualTo("1.7") {
streamJSON(job, w, false)
} else if outs, err = job.Stdout.AddListTable(); err != nil {
return err
}
if err := job.Run(); err != nil {
return err
}
if version.LessThan("1.7") && outs != nil { // Convert to legacy format
outsLegacy := engine.NewTable("Created", 0)
for _, out := range outs.Data {
for _, repoTag := range out.GetList("RepoTags") {
repo, tag := parsers.ParseRepositoryTag(repoTag)
outLegacy := &engine.Env{}
outLegacy.Set("Repository", repo)
outLegacy.SetJson("Tag", tag)
outLegacy.Set("Id", out.Get("Id"))
outLegacy.SetInt64("Created", out.GetInt64("Created"))
outLegacy.SetInt64("Size", out.GetInt64("Size"))
outLegacy.SetInt64("VirtualSize", out.GetInt64("VirtualSize"))
outsLegacy.Add(outLegacy)
}
}
w.Header().Set("Content-Type", "application/json")
if _, err := outsLegacy.WriteListTo(w); err != nil {
return err
}
}
return nil
}
func getImagesViz(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if version.GreaterThan("1.6") {
w.WriteHeader(http.StatusNotFound)
return fmt.Errorf("This is now implemented in the client.")
}
eng.ServeHTTP(w, r)
return nil
}
func getInfo(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
w.Header().Set("Content-Type", "application/json")
eng.ServeHTTP(w, r)
return nil
}
func getEvents(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := parseForm(r); err != nil {
return err
}
var job = eng.Job("events")
streamJSON(job, w, true)
job.Setenv("since", r.Form.Get("since"))
job.Setenv("until", r.Form.Get("until"))
job.Setenv("filters", r.Form.Get("filters"))
return job.Run()
}
func getImagesHistory(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if vars == nil {
return fmt.Errorf("Missing parameter")
}
var job = eng.Job("history", vars["name"])
streamJSON(job, w, false)
if err := job.Run(); err != nil {
return err
}
return nil
}
func getContainersChanges(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if vars == nil {
return fmt.Errorf("Missing parameter")
}
var job = eng.Job("container_changes", vars["name"])
streamJSON(job, w, false)
return job.Run()
}
func getContainersTop(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if version.LessThan("1.4") {
return fmt.Errorf("top was improved a lot since 1.3, Please upgrade your docker client.")
}
if vars == nil {
return fmt.Errorf("Missing parameter")
}
if err := parseForm(r); err != nil {
return err
}
job := eng.Job("top", vars["name"], r.Form.Get("ps_args"))
streamJSON(job, w, false)
return job.Run()
}
func getContainersJSON(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := parseForm(r); err != nil {
return err
}
var (
err error
outs *engine.Table
job = eng.Job("containers")
)
job.Setenv("all", r.Form.Get("all"))
job.Setenv("size", r.Form.Get("size"))
job.Setenv("since", r.Form.Get("since"))
job.Setenv("before", r.Form.Get("before"))
job.Setenv("limit", r.Form.Get("limit"))
job.Setenv("filters", r.Form.Get("filters"))
if version.GreaterThanOrEqualTo("1.5") {
streamJSON(job, w, false)
} else if outs, err = job.Stdout.AddTable(); err != nil {
return err
}
if err = job.Run(); err != nil {
return err
}
if version.LessThan("1.5") { // Convert to legacy format
for _, out := range outs.Data {
ports := engine.NewTable("", 0)
ports.ReadListFrom([]byte(out.Get("Ports")))
out.Set("Ports", api.DisplayablePorts(ports))
}
w.Header().Set("Content-Type", "application/json")
if _, err = outs.WriteListTo(w); err != nil {
return err
}
}
return nil
}
func getContainersStats(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := parseForm(r); err != nil {
return err
}
if vars == nil {
return fmt.Errorf("Missing parameter")
}
name := vars["name"]
job := eng.Job("container_stats", name)
streamJSON(job, w, true)
return job.Run()
}
func getContainersLogs(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := parseForm(r); err != nil {
return err
}
if vars == nil {
return fmt.Errorf("Missing parameter")
}
var (
inspectJob = eng.Job("container_inspect", vars["name"])
logsJob = eng.Job("logs", vars["name"])
c, err = inspectJob.Stdout.AddEnv()
)
if err != nil {
return err
}
logsJob.Setenv("follow", r.Form.Get("follow"))
logsJob.Setenv("tail", r.Form.Get("tail"))
logsJob.Setenv("stdout", r.Form.Get("stdout"))
logsJob.Setenv("stderr", r.Form.Get("stderr"))
logsJob.Setenv("timestamps", r.Form.Get("timestamps"))
// Validate args here, because we can't return not StatusOK after job.Run() call
stdout, stderr := logsJob.GetenvBool("stdout"), logsJob.GetenvBool("stderr")
if !(stdout || stderr) {
return fmt.Errorf("Bad parameters: you must choose at least one stream")
}
if err = inspectJob.Run(); err != nil {
return err
}
var outStream, errStream io.Writer
outStream = utils.NewWriteFlusher(w)
if c.GetSubEnv("Config") != nil && !c.GetSubEnv("Config").GetBool("Tty") && version.GreaterThanOrEqualTo("1.6") {
errStream = stdcopy.NewStdWriter(outStream, stdcopy.Stderr)
outStream = stdcopy.NewStdWriter(outStream, stdcopy.Stdout)
} else {
errStream = outStream
}
logsJob.Stdout.Add(outStream)
logsJob.Stderr.Set(errStream)
if err := logsJob.Run(); err != nil {
fmt.Fprintf(outStream, "Error running logs job: %s\n", err)
}
return nil
}
func postImagesTag(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := parseForm(r); err != nil {
return err
}
if vars == nil {
return fmt.Errorf("Missing parameter")
}
job := eng.Job("tag", vars["name"], r.Form.Get("repo"), r.Form.Get("tag"))
job.Setenv("force", r.Form.Get("force"))
if err := job.Run(); err != nil {
return err
}
w.WriteHeader(http.StatusCreated)
return nil
}
func postCommit(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := parseForm(r); err != nil {
return err
}
var (
config engine.Env
env engine.Env
job = eng.Job("commit", r.Form.Get("container"))
stdoutBuffer = bytes.NewBuffer(nil)
)
if err := checkForJson(r); err != nil {
return err
}
if err := config.Decode(r.Body); err != nil {
log.Errorf("%s", err)
}
if r.FormValue("pause") == "" && version.GreaterThanOrEqualTo("1.13") {
job.Setenv("pause", "1")
} else {
job.Setenv("pause", r.FormValue("pause"))
}
job.Setenv("repo", r.Form.Get("repo"))
job.Setenv("tag", r.Form.Get("tag"))
job.Setenv("author", r.Form.Get("author"))
job.Setenv("comment", r.Form.Get("comment"))
job.SetenvList("changes", r.Form["changes"])
job.SetenvSubEnv("config", &config)
job.Stdout.Add(stdoutBuffer)
if err := job.Run(); err != nil {
return err
}
env.Set("Id", engine.Tail(stdoutBuffer, 1))
return writeJSON(w, http.StatusCreated, env)
}
// Creates an image from Pull or from Import
func postImagesCreate(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := parseForm(r); err != nil {
return err
}
var (
image = r.Form.Get("fromImage")
repo = r.Form.Get("repo")
tag = r.Form.Get("tag")
job *engine.Job
)
authEncoded := r.Header.Get("X-Registry-Auth")
authConfig := &registry.AuthConfig{}
if authEncoded != "" {
authJson := base64.NewDecoder(base64.URLEncoding, strings.NewReader(authEncoded))
if err := json.NewDecoder(authJson).Decode(authConfig); err != nil {
// for a pull it is not an error if no auth was given
// to increase compatibility with the existing api it is defaulting to be empty
authConfig = &registry.AuthConfig{}
}
}
if image != "" { //pull
if tag == "" {
image, tag = parsers.ParseRepositoryTag(image)
}
metaHeaders := map[string][]string{}
for k, v := range r.Header {
if strings.HasPrefix(k, "X-Meta-") {
metaHeaders[k] = v
}
}
job = eng.Job("pull", image, tag)
job.SetenvBool("parallel", version.GreaterThan("1.3"))
job.SetenvJson("metaHeaders", metaHeaders)
job.SetenvJson("authConfig", authConfig)
} else { //import
if tag == "" {
repo, tag = parsers.ParseRepositoryTag(repo)
}
job = eng.Job("import", r.Form.Get("fromSrc"), repo, tag)
job.Stdin.Add(r.Body)
job.SetenvList("changes", r.Form["changes"])
}
if version.GreaterThan("1.0") {
job.SetenvBool("json", true)
streamJSON(job, w, true)
} else {
job.Stdout.Add(utils.NewWriteFlusher(w))
}
if err := job.Run(); err != nil {
if !job.Stdout.Used() {
return err
}
sf := utils.NewStreamFormatter(version.GreaterThan("1.0"))
w.Write(sf.FormatError(err))
}
return nil
}
func getImagesSearch(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := parseForm(r); err != nil {
return err
}
var (
authEncoded = r.Header.Get("X-Registry-Auth")
authConfig = &registry.AuthConfig{}
metaHeaders = map[string][]string{}
)
if authEncoded != "" {
authJson := base64.NewDecoder(base64.URLEncoding, strings.NewReader(authEncoded))
if err := json.NewDecoder(authJson).Decode(authConfig); err != nil {
// for a search it is not an error if no auth was given
// to increase compatibility with the existing api it is defaulting to be empty
authConfig = &registry.AuthConfig{}
}
}
for k, v := range r.Header {
if strings.HasPrefix(k, "X-Meta-") {
metaHeaders[k] = v
}
}
var job = eng.Job("search", r.Form.Get("term"))
job.SetenvJson("metaHeaders", metaHeaders)
job.SetenvJson("authConfig", authConfig)
streamJSON(job, w, false)
return job.Run()
}
func postImagesPush(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if vars == nil {
return fmt.Errorf("Missing parameter")
}
metaHeaders := map[string][]string{}
for k, v := range r.Header {
if strings.HasPrefix(k, "X-Meta-") {
metaHeaders[k] = v
}
}
if err := parseForm(r); err != nil {
return err
}
authConfig := &registry.AuthConfig{}
authEncoded := r.Header.Get("X-Registry-Auth")
if authEncoded != "" {
// the new format is to handle the authConfig as a header
authJson := base64.NewDecoder(base64.URLEncoding, strings.NewReader(authEncoded))
if err := json.NewDecoder(authJson).Decode(authConfig); err != nil {
// to increase compatibility to existing api it is defaulting to be empty
authConfig = &registry.AuthConfig{}
}
} else {
// the old format is supported for compatibility if there was no authConfig header
if err := json.NewDecoder(r.Body).Decode(authConfig); err != nil {
return err
}
}
job := eng.Job("push", vars["name"])
job.SetenvJson("metaHeaders", metaHeaders)
job.SetenvJson("authConfig", authConfig)
job.Setenv("tag", r.Form.Get("tag"))
if version.GreaterThan("1.0") {
job.SetenvBool("json", true)
streamJSON(job, w, true)
} else {
job.Stdout.Add(utils.NewWriteFlusher(w))
}
if err := job.Run(); err != nil {
if !job.Stdout.Used() {
return err
}
sf := utils.NewStreamFormatter(version.GreaterThan("1.0"))
w.Write(sf.FormatError(err))
}
return nil
}
func getImagesGet(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if vars == nil {
return fmt.Errorf("Missing parameter")
}
if err := parseForm(r); err != nil {
return err
}
if version.GreaterThan("1.0") {
w.Header().Set("Content-Type", "application/x-tar")
}
var job *engine.Job
if name, ok := vars["name"]; ok {
job = eng.Job("image_export", name)
} else {
job = eng.Job("image_export", r.Form["names"]...)
}
job.Stdout.Add(w)
return job.Run()
}
func postImagesLoad(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
job := eng.Job("load")
job.Stdin.Add(r.Body)
return job.Run()
}
func postContainersCreate(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := parseForm(r); err != nil {
return nil
}
var (
out engine.Env
job = eng.Job("create", r.Form.Get("name"))
outWarnings []string
stdoutBuffer = bytes.NewBuffer(nil)
warnings = bytes.NewBuffer(nil)
)
if err := checkForJson(r); err != nil {
return err
}
if err := job.DecodeEnv(r.Body); err != nil {
return err
}
// Read container ID from the first line of stdout
job.Stdout.Add(stdoutBuffer)
// Read warnings from stderr
job.Stderr.Add(warnings)
if err := job.Run(); err != nil {
return err
}
// Parse warnings from stderr
scanner := bufio.NewScanner(warnings)
for scanner.Scan() {
outWarnings = append(outWarnings, scanner.Text())
}
out.Set("Id", engine.Tail(stdoutBuffer, 1))
out.SetList("Warnings", outWarnings)
return writeJSON(w, http.StatusCreated, out)
}
func postContainersRestart(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := parseForm(r); err != nil {
return err
}
if vars == nil {
return fmt.Errorf("Missing parameter")
}
job := eng.Job("restart", vars["name"])
job.Setenv("t", r.Form.Get("t"))
if err := job.Run(); err != nil {
return err
}
w.WriteHeader(http.StatusNoContent)
return nil
}
func postContainerRename(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := parseForm(r); err != nil {
return err
}
if vars == nil {
return fmt.Errorf("Missing parameter")
}
newName := r.URL.Query().Get("name")
job := eng.Job("container_rename", vars["name"], newName)
job.Setenv("t", r.Form.Get("t"))
if err := job.Run(); err != nil {
return err
}
w.WriteHeader(http.StatusNoContent)
return nil
}
func deleteContainers(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := parseForm(r); err != nil {
return err
}
if vars == nil {
return fmt.Errorf("Missing parameter")
}
job := eng.Job("rm", vars["name"])
job.Setenv("forceRemove", r.Form.Get("force"))
job.Setenv("removeVolume", r.Form.Get("v"))
job.Setenv("removeLink", r.Form.Get("link"))
if err := job.Run(); err != nil {
return err
}
w.WriteHeader(http.StatusNoContent)
return nil
}
func deleteImages(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := parseForm(r); err != nil {
return err
}
if vars == nil {
return fmt.Errorf("Missing parameter")
}
var job = eng.Job("image_delete", vars["name"])
streamJSON(job, w, false)
job.Setenv("force", r.Form.Get("force"))
job.Setenv("noprune", r.Form.Get("noprune"))
return job.Run()
}
func postContainersStart(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if vars == nil {
return fmt.Errorf("Missing parameter")
}
var (
name = vars["name"]
job = eng.Job("start", name)
)
// If contentLength is -1, we can assumed chunked encoding
// or more technically that the length is unknown
// http://golang.org/src/pkg/net/http/request.go#L139
// net/http otherwise seems to swallow any headers related to chunked encoding
// including r.TransferEncoding
// allow a nil body for backwards compatibility
if r.Body != nil && (r.ContentLength > 0 || r.ContentLength == -1) {
if err := checkForJson(r); err != nil {
return err
}
if err := job.DecodeEnv(r.Body); err != nil {
return err
}
}
if err := job.Run(); err != nil {
if err.Error() == "Container already started" {
w.WriteHeader(http.StatusNotModified)
return nil
}
return err
}
w.WriteHeader(http.StatusNoContent)
return nil
}
func postContainersStop(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := parseForm(r); err != nil {
return err
}
if vars == nil {
return fmt.Errorf("Missing parameter")
}
job := eng.Job("stop", vars["name"])
job.Setenv("t", r.Form.Get("t"))
if err := job.Run(); err != nil {
if err.Error() == "Container already stopped" {
w.WriteHeader(http.StatusNotModified)
return nil
}
return err
}
w.WriteHeader(http.StatusNoContent)
return nil
}
func postContainersWait(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if vars == nil {
return fmt.Errorf("Missing parameter")
}
var (
env engine.Env
stdoutBuffer = bytes.NewBuffer(nil)
job = eng.Job("wait", vars["name"])
)
job.Stdout.Add(stdoutBuffer)
if err := job.Run(); err != nil {
return err
}
env.Set("StatusCode", engine.Tail(stdoutBuffer, 1))
return writeJSON(w, http.StatusOK, env)
}
func postContainersResize(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := parseForm(r); err != nil {
return err
}
if vars == nil {
return fmt.Errorf("Missing parameter")
}
if err := eng.Job("resize", vars["name"], r.Form.Get("h"), r.Form.Get("w")).Run(); err != nil {
return err
}
return nil
}
func postContainersAttach(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := parseForm(r); err != nil {
return err
}
if vars == nil {
return fmt.Errorf("Missing parameter")
}
var (
job = eng.Job("container_inspect", vars["name"])
c, err = job.Stdout.AddEnv()
)
if err != nil {
return err
}
if err = job.Run(); err != nil {
return err
}
inStream, outStream, err := hijackServer(w)
if err != nil {
return err
}
defer closeStreams(inStream, outStream)
var errStream io.Writer
if _, ok := r.Header["Upgrade"]; ok {
fmt.Fprintf(outStream, "HTTP/1.1 101 UPGRADED\r\nContent-Type: application/vnd.docker.raw-stream\r\nConnection: Upgrade\r\nUpgrade: tcp\r\n\r\n")
} else {
fmt.Fprintf(outStream, "HTTP/1.1 200 OK\r\nContent-Type: application/vnd.docker.raw-stream\r\n\r\n")
}
if c.GetSubEnv("Config") != nil && !c.GetSubEnv("Config").GetBool("Tty") && version.GreaterThanOrEqualTo("1.6") {
errStream = stdcopy.NewStdWriter(outStream, stdcopy.Stderr)
outStream = stdcopy.NewStdWriter(outStream, stdcopy.Stdout)
} else {
errStream = outStream
}
job = eng.Job("attach", vars["name"])
job.Setenv("logs", r.Form.Get("logs"))
job.Setenv("stream", r.Form.Get("stream"))
job.Setenv("stdin", r.Form.Get("stdin"))
job.Setenv("stdout", r.Form.Get("stdout"))
job.Setenv("stderr", r.Form.Get("stderr"))
job.Stdin.Add(inStream)
job.Stdout.Add(outStream)
job.Stderr.Set(errStream)
if err := job.Run(); err != nil {
fmt.Fprintf(outStream, "Error attaching: %s\n", err)
}
return nil
}
func wsContainersAttach(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := parseForm(r); err != nil {
return err
}
if vars == nil {
return fmt.Errorf("Missing parameter")
}
if err := eng.Job("container_inspect", vars["name"]).Run(); err != nil {
return err
}
h := websocket.Handler(func(ws *websocket.Conn) {
defer ws.Close()
job := eng.Job("attach", vars["name"])
job.Setenv("logs", r.Form.Get("logs"))
job.Setenv("stream", r.Form.Get("stream"))
job.Setenv("stdin", r.Form.Get("stdin"))
job.Setenv("stdout", r.Form.Get("stdout"))
job.Setenv("stderr", r.Form.Get("stderr"))
job.Stdin.Add(ws)
job.Stdout.Add(ws)
job.Stderr.Set(ws)
if err := job.Run(); err != nil {
log.Errorf("Error attaching websocket: %s", err)
}
})
h.ServeHTTP(w, r)
return nil
}
func getContainersByName(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if vars == nil {
return fmt.Errorf("Missing parameter")
}
var job = eng.Job("container_inspect", vars["name"])
if version.LessThan("1.12") {
job.SetenvBool("raw", true)
}
streamJSON(job, w, false)
return job.Run()
}
func getExecByID(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if vars == nil {
return fmt.Errorf("Missing parameter 'id'")
}
var job = eng.Job("execInspect", vars["id"])
streamJSON(job, w, false)
return job.Run()
}
func getImagesByName(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if vars == nil {
return fmt.Errorf("Missing parameter")
}
var job = eng.Job("image_inspect", vars["name"])
if version.LessThan("1.12") {
job.SetenvBool("raw", true)
}
streamJSON(job, w, false)
return job.Run()
}
func postBuild(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if version.LessThan("1.3") {
return fmt.Errorf("Multipart upload for build is no longer supported. Please upgrade your docker client.")
}
var (
authEncoded = r.Header.Get("X-Registry-Auth")
authConfig = &registry.AuthConfig{}
configFileEncoded = r.Header.Get("X-Registry-Config")
configFile = &registry.ConfigFile{}
job = eng.Job("build")
)
// This block can be removed when API versions prior to 1.9 are deprecated.
// Both headers will be parsed and sent along to the daemon, but if a non-empty
// ConfigFile is present, any value provided as an AuthConfig directly will
// be overridden. See BuildFile::CmdFrom for details.
if version.LessThan("1.9") && authEncoded != "" {
authJson := base64.NewDecoder(base64.URLEncoding, strings.NewReader(authEncoded))
if err := json.NewDecoder(authJson).Decode(authConfig); err != nil {
// for a pull it is not an error if no auth was given
// to increase compatibility with the existing api it is defaulting to be empty
authConfig = &registry.AuthConfig{}
}
}
if configFileEncoded != "" {
configFileJson := base64.NewDecoder(base64.URLEncoding, strings.NewReader(configFileEncoded))
if err := json.NewDecoder(configFileJson).Decode(configFile); err != nil {
// for a pull it is not an error if no auth was given
// to increase compatibility with the existing api it is defaulting to be empty
configFile = &registry.ConfigFile{}
}
}
if version.GreaterThanOrEqualTo("1.8") {
job.SetenvBool("json", true)
streamJSON(job, w, true)
} else {
job.Stdout.Add(utils.NewWriteFlusher(w))
}
if r.FormValue("forcerm") == "1" && version.GreaterThanOrEqualTo("1.12") {
job.Setenv("rm", "1")
} else if r.FormValue("rm") == "" && version.GreaterThanOrEqualTo("1.12") {
job.Setenv("rm", "1")
} else {
job.Setenv("rm", r.FormValue("rm"))
}
if r.FormValue("pull") == "1" && version.GreaterThanOrEqualTo("1.16") {
job.Setenv("pull", "1")
}
job.Stdin.Add(r.Body)
job.Setenv("remote", r.FormValue("remote"))
job.Setenv("dockerfile", r.FormValue("dockerfile"))
job.Setenv("t", r.FormValue("t"))
job.Setenv("q", r.FormValue("q"))
job.Setenv("nocache", r.FormValue("nocache"))
job.Setenv("forcerm", r.FormValue("forcerm"))
job.SetenvJson("authConfig", authConfig)
job.SetenvJson("configFile", configFile)
if err := job.Run(); err != nil {
if !job.Stdout.Used() {
return err
}
sf := utils.NewStreamFormatter(version.GreaterThanOrEqualTo("1.8"))
w.Write(sf.FormatError(err))
}
return nil
}
func postContainersCopy(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if vars == nil {
return fmt.Errorf("Missing parameter")
}
var copyData engine.Env
if err := checkForJson(r); err != nil {
return err
}
if err := copyData.Decode(r.Body); err != nil {
return err
}
if copyData.Get("Resource") == "" {
return fmt.Errorf("Path cannot be empty")
}
origResource := copyData.Get("Resource")
if copyData.Get("Resource")[0] == '/' {
copyData.Set("Resource", copyData.Get("Resource")[1:])
}
job := eng.Job("container_copy", vars["name"], copyData.Get("Resource"))
job.Stdout.Add(w)
w.Header().Set("Content-Type", "application/x-tar")
if err := job.Run(); err != nil {
log.Errorf("%s", err.Error())
if strings.Contains(strings.ToLower(err.Error()), "no such id") {
w.WriteHeader(http.StatusNotFound)
} else if strings.Contains(err.Error(), "no such file or directory") {
return fmt.Errorf("Could not find the file %s in container %s", origResource, vars["name"])
}
}
return nil
}
func postContainerExecCreate(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := parseForm(r); err != nil {
return nil
}
var (
out engine.Env
name = vars["name"]
job = eng.Job("execCreate", name)
stdoutBuffer = bytes.NewBuffer(nil)
)
if err := job.DecodeEnv(r.Body); err != nil {
return err
}
job.Stdout.Add(stdoutBuffer)
// Register an instance of Exec in container.
if err := job.Run(); err != nil {
fmt.Fprintf(os.Stderr, "Error setting up exec command in container %s: %s\n", name, err)
return err
}
// Return the ID
out.Set("Id", engine.Tail(stdoutBuffer, 1))
return writeJSON(w, http.StatusCreated, out)
}
// TODO(vishh): Refactor the code to avoid having to specify stream config as part of both create and start.
func postContainerExecStart(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := parseForm(r); err != nil {
return nil
}
var (
name = vars["name"]
job = eng.Job("execStart", name)
errOut io.Writer = os.Stderr
)
if err := job.DecodeEnv(r.Body); err != nil {
return err
}
if !job.GetenvBool("Detach") {
// Setting up the streaming http interface.
inStream, outStream, err := hijackServer(w)
if err != nil {
return err
}
defer closeStreams(inStream, outStream)
var errStream io.Writer
if _, ok := r.Header["Upgrade"]; ok {
fmt.Fprintf(outStream, "HTTP/1.1 101 UPGRADED\r\nContent-Type: application/vnd.docker.raw-stream\r\nConnection: Upgrade\r\nUpgrade: tcp\r\n\r\n")
} else {
fmt.Fprintf(outStream, "HTTP/1.1 200 OK\r\nContent-Type: application/vnd.docker.raw-stream\r\n\r\n")
}
if !job.GetenvBool("Tty") && version.GreaterThanOrEqualTo("1.6") {
errStream = stdcopy.NewStdWriter(outStream, stdcopy.Stderr)
outStream = stdcopy.NewStdWriter(outStream, stdcopy.Stdout)
} else {
errStream = outStream
}
job.Stdin.Add(inStream)
job.Stdout.Add(outStream)
job.Stderr.Set(errStream)
errOut = outStream
}
// Now run the user process in container.
job.SetCloseIO(false)
if err := job.Run(); err != nil {
fmt.Fprintf(errOut, "Error starting exec command in container %s: %s\n", name, err)
return err
}
w.WriteHeader(http.StatusNoContent)
return nil
}
func postContainerExecResize(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := parseForm(r); err != nil {
return err
}
if vars == nil {
return fmt.Errorf("Missing parameter")
}
if err := eng.Job("execResize", vars["name"], r.Form.Get("h"), r.Form.Get("w")).Run(); err != nil {
return err
}
return nil
}
func optionsHandler(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
w.WriteHeader(http.StatusOK)
return nil
}
func writeCorsHeaders(w http.ResponseWriter, r *http.Request) {
w.Header().Add("Access-Control-Allow-Origin", "*")
w.Header().Add("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept, X-Registry-Auth")
w.Header().Add("Access-Control-Allow-Methods", "GET, POST, DELETE, PUT, OPTIONS")
}
func ping(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
_, err := w.Write([]byte{'O', 'K'})
return err
}
func makeHttpHandler(eng *engine.Engine, logging bool, localMethod string, localRoute string, handlerFunc HttpApiFunc, enableCors bool, dockerVersion version.Version) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
// log the request
log.Debugf("Calling %s %s", localMethod, localRoute)
if logging {
log.Infof("%s %s", r.Method, r.RequestURI)
}
if strings.Contains(r.Header.Get("User-Agent"), "Docker-Client/") {
userAgent := strings.Split(r.Header.Get("User-Agent"), "/")
if len(userAgent) == 2 && !dockerVersion.Equal(version.Version(userAgent[1])) {
log.Debugf("Warning: client and server don't have the same version (client: %s, server: %s)", userAgent[1], dockerVersion)
}
}
version := version.Version(mux.Vars(r)["version"])
if version == "" {
version = api.APIVERSION
}
if enableCors {
writeCorsHeaders(w, r)
}
if version.GreaterThan(api.APIVERSION) {
http.Error(w, fmt.Errorf("client and server don't have same version (client : %s, server: %s)", version, api.APIVERSION).Error(), http.StatusNotFound)
return
}
if err := handlerFunc(eng, version, w, r, mux.Vars(r)); err != nil {
log.Errorf("Handler for %s %s returned error: %s", localMethod, localRoute, err)
httpError(w, err)
}
}
}
// Replicated from expvar.go as not public.
func expvarHandler(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/json; charset=utf-8")
fmt.Fprintf(w, "{\n")
first := true
expvar.Do(func(kv expvar.KeyValue) {
if !first {
fmt.Fprintf(w, ",\n")
}
first = false
fmt.Fprintf(w, "%q: %s", kv.Key, kv.Value)
})
fmt.Fprintf(w, "\n}\n")
}
func AttachProfiler(router *mux.Router) {
router.HandleFunc("/debug/vars", expvarHandler)
router.HandleFunc("/debug/pprof/", pprof.Index)
router.HandleFunc("/debug/pprof/cmdline", pprof.Cmdline)
router.HandleFunc("/debug/pprof/profile", pprof.Profile)
router.HandleFunc("/debug/pprof/symbol", pprof.Symbol)
router.HandleFunc("/debug/pprof/block", pprof.Handler("block").ServeHTTP)
router.HandleFunc("/debug/pprof/heap", pprof.Handler("heap").ServeHTTP)
router.HandleFunc("/debug/pprof/goroutine", pprof.Handler("goroutine").ServeHTTP)
router.HandleFunc("/debug/pprof/threadcreate", pprof.Handler("threadcreate").ServeHTTP)
}
func createRouter(eng *engine.Engine, logging, enableCors bool, dockerVersion string) *mux.Router {
r := mux.NewRouter()
if os.Getenv("DEBUG") != "" {
AttachProfiler(r)
}
m := map[string]map[string]HttpApiFunc{
"GET": {
"/_ping": ping,
"/events": getEvents,
"/info": getInfo,
"/version": getVersion,
"/images/json": getImagesJSON,
"/images/viz": getImagesViz,
"/images/search": getImagesSearch,
"/images/get": getImagesGet,
"/images/{name:.*}/get": getImagesGet,
"/images/{name:.*}/history": getImagesHistory,
"/images/{name:.*}/json": getImagesByName,
"/containers/ps": getContainersJSON,
"/containers/json": getContainersJSON,
"/containers/{name:.*}/export": getContainersExport,
"/containers/{name:.*}/changes": getContainersChanges,
"/containers/{name:.*}/json": getContainersByName,
"/containers/{name:.*}/top": getContainersTop,
"/containers/{name:.*}/logs": getContainersLogs,
"/containers/{name:.*}/stats": getContainersStats,
"/containers/{name:.*}/attach/ws": wsContainersAttach,
"/exec/{id:.*}/json": getExecByID,
},
"POST": {
"/auth": postAuth,
"/commit": postCommit,
"/build": postBuild,
"/images/create": postImagesCreate,
"/images/load": postImagesLoad,
"/images/{name:.*}/push": postImagesPush,
"/images/{name:.*}/tag": postImagesTag,
"/containers/create": postContainersCreate,
"/containers/{name:.*}/kill": postContainersKill,
"/containers/{name:.*}/pause": postContainersPause,
"/containers/{name:.*}/unpause": postContainersUnpause,
"/containers/{name:.*}/restart": postContainersRestart,
"/containers/{name:.*}/start": postContainersStart,
"/containers/{name:.*}/stop": postContainersStop,
"/containers/{name:.*}/wait": postContainersWait,
"/containers/{name:.*}/resize": postContainersResize,
"/containers/{name:.*}/attach": postContainersAttach,
"/containers/{name:.*}/copy": postContainersCopy,
"/containers/{name:.*}/exec": postContainerExecCreate,
"/exec/{name:.*}/start": postContainerExecStart,
"/exec/{name:.*}/resize": postContainerExecResize,
"/containers/{name:.*}/rename": postContainerRename,
},
"DELETE": {
"/containers/{name:.*}": deleteContainers,
"/images/{name:.*}": deleteImages,
},
"OPTIONS": {
"": optionsHandler,
},
}
for method, routes := range m {
for route, fct := range routes {
log.Debugf("Registering %s, %s", method, route)
// NOTE: scope issue, make sure the variables are local and won't be changed
localRoute := route
localFct := fct
localMethod := method
// build the handler function
f := makeHttpHandler(eng, logging, localMethod, localRoute, localFct, enableCors, version.Version(dockerVersion))
// add the new route
if localRoute == "" {
r.Methods(localMethod).HandlerFunc(f)
} else {
r.Path("/v{version:[0-9.]+}" + localRoute).Methods(localMethod).HandlerFunc(f)
r.Path(localRoute).Methods(localMethod).HandlerFunc(f)
}
}
}
return r
}
// ServeRequest processes a single http request to the docker remote api.
// FIXME: refactor this to be part of Server and not require re-creating a new
// router each time. This requires first moving ListenAndServe into Server.
func ServeRequest(eng *engine.Engine, apiversion version.Version, w http.ResponseWriter, req *http.Request) {
router := createRouter(eng, false, true, "")
// Insert APIVERSION into the request as a convenience
req.URL.Path = fmt.Sprintf("/v%s%s", apiversion, req.URL.Path)
router.ServeHTTP(w, req)
}
// serveFd creates an http.Server and sets it up to serve given a socket activated
// argument.
func serveFd(addr string, job *engine.Job) error {
r := createRouter(job.Eng, job.GetenvBool("Logging"), job.GetenvBool("EnableCors"), job.Getenv("Version"))
ls, e := systemd.ListenFD(addr)
if e != nil {
return e
}
chErrors := make(chan error, len(ls))
// We don't want to start serving on these sockets until the
// daemon is initialized and installed. Otherwise required handlers
// won't be ready.
<-activationLock
// Since ListenFD will return one or more sockets we have
// to create a go func to spawn off multiple serves
for i := range ls {
listener := ls[i]
go func() {
httpSrv := http.Server{Handler: r}
chErrors <- httpSrv.Serve(listener)
}()
}
for i := 0; i < len(ls); i++ {
err := <-chErrors
if err != nil {
return err
}
}
return nil
}
func lookupGidByName(nameOrGid string) (int, error) {
groupFile, err := user.GetGroupPath()
if err != nil {
return -1, err
}
groups, err := user.ParseGroupFileFilter(groupFile, func(g user.Group) bool {
return g.Name == nameOrGid || strconv.Itoa(g.Gid) == nameOrGid
})
if err != nil {
return -1, err
}
if groups != nil && len(groups) > 0 {
return groups[0].Gid, nil
}
return -1, fmt.Errorf("Group %s not found", nameOrGid)
}
func setupTls(cert, key, ca string, l net.Listener) (net.Listener, error) {
tlsCert, err := tls.LoadX509KeyPair(cert, key)
if err != nil {
return nil, fmt.Errorf("Couldn't load X509 key pair (%s, %s): %s. Key encrypted?",
cert, key, err)
}
tlsConfig := &tls.Config{
NextProtos: []string{"http/1.1"},
Certificates: []tls.Certificate{tlsCert},
// Avoid fallback on insecure SSL protocols
MinVersion: tls.VersionTLS10,
}
if ca != "" {
certPool := x509.NewCertPool()
file, err := ioutil.ReadFile(ca)
if err != nil {
return nil, fmt.Errorf("Couldn't read CA certificate: %s", err)
}
certPool.AppendCertsFromPEM(file)
tlsConfig.ClientAuth = tls.RequireAndVerifyClientCert
tlsConfig.ClientCAs = certPool
}
return tls.NewListener(l, tlsConfig), nil
}
func newListener(proto, addr string, bufferRequests bool) (net.Listener, error) {
if bufferRequests {
return listenbuffer.NewListenBuffer(proto, addr, activationLock)
}
return net.Listen(proto, addr)
}
func changeGroup(addr string, nameOrGid string) error {
gid, err := lookupGidByName(nameOrGid)
if err != nil {
return err
}
log.Debugf("%s group found. gid: %d", nameOrGid, gid)
return os.Chown(addr, 0, gid)
}
func setSocketGroup(addr, group string) error {
if group == "" {
return nil
}
if err := changeGroup(addr, group); err != nil {
if group != "docker" {
return err
}
log.Debugf("Warning: could not chgrp %s to docker: %v", addr, err)
}
return nil
}
func setupUnixHttp(addr string, job *engine.Job) (*HttpServer, error) {
r := createRouter(job.Eng, job.GetenvBool("Logging"), job.GetenvBool("EnableCors"), job.Getenv("Version"))
if err := syscall.Unlink(addr); err != nil && !os.IsNotExist(err) {
return nil, err
}
mask := syscall.Umask(0777)
defer syscall.Umask(mask)
l, err := newListener("unix", addr, job.GetenvBool("BufferRequests"))
if err != nil {
return nil, err
}
if err := setSocketGroup(addr, job.Getenv("SocketGroup")); err != nil {
return nil, err
}
if err := os.Chmod(addr, 0660); err != nil {
return nil, err
}
return &HttpServer{&http.Server{Addr: addr, Handler: r}, l}, nil
}
func allocateDaemonPort(addr string) error {
host, port, err := net.SplitHostPort(addr)
if err != nil {
return err
}
intPort, err := strconv.Atoi(port)
if err != nil {
return err
}
var hostIPs []net.IP
if parsedIP := net.ParseIP(host); parsedIP != nil {
hostIPs = append(hostIPs, parsedIP)
} else if hostIPs, err = net.LookupIP(host); err != nil {
return fmt.Errorf("failed to lookup %s address in host specification", host)
}
for _, hostIP := range hostIPs {
if _, err := portallocator.RequestPort(hostIP, "tcp", intPort); err != nil {
return fmt.Errorf("failed to allocate daemon listening port %d (err: %v)", intPort, err)
}
}
return nil
}
func setupTcpHttp(addr string, job *engine.Job) (*HttpServer, error) {
if !job.GetenvBool("TlsVerify") {
log.Infof("/!\\ DON'T BIND ON ANY IP ADDRESS WITHOUT setting -tlsverify IF YOU DON'T KNOW WHAT YOU'RE DOING /!\\")
}
r := createRouter(job.Eng, job.GetenvBool("Logging"), job.GetenvBool("EnableCors"), job.Getenv("Version"))
l, err := newListener("tcp", addr, job.GetenvBool("BufferRequests"))
if err != nil {
return nil, err
}
if err := allocateDaemonPort(addr); err != nil {
return nil, err
}
if job.GetenvBool("Tls") || job.GetenvBool("TlsVerify") {
var tlsCa string
if job.GetenvBool("TlsVerify") {
tlsCa = job.Getenv("TlsCa")
}
l, err = setupTls(job.Getenv("TlsCert"), job.Getenv("TlsKey"), tlsCa, l)
if err != nil {
return nil, err
}
}
return &HttpServer{&http.Server{Addr: addr, Handler: r}, l}, nil
}
// NewServer sets up the required Server and does protocol specific checking.
func NewServer(proto, addr string, job *engine.Job) (Server, error) {
// Basic error and sanity checking
switch proto {
case "fd":
return nil, serveFd(addr, job)
case "tcp":
return setupTcpHttp(addr, job)
case "unix":
return setupUnixHttp(addr, job)
default:
return nil, fmt.Errorf("Invalid protocol format.")
}
}
type Server interface {
Serve() error
Close() error
}
// ServeApi loops through all of the protocols sent in to docker and spawns
// off a go routine to setup a serving http.Server for each.
func ServeApi(job *engine.Job) engine.Status {
if len(job.Args) == 0 {
return job.Errorf("usage: %s PROTO://ADDR [PROTO://ADDR ...]", job.Name)
}
var (
protoAddrs = job.Args
chErrors = make(chan error, len(protoAddrs))
)
activationLock = make(chan struct{})
for _, protoAddr := range protoAddrs {
protoAddrParts := strings.SplitN(protoAddr, "://", 2)
if len(protoAddrParts) != 2 {
return job.Errorf("usage: %s PROTO://ADDR [PROTO://ADDR ...]", job.Name)
}
go func() {
log.Infof("Listening for HTTP on %s (%s)", protoAddrParts[0], protoAddrParts[1])
srv, err := NewServer(protoAddrParts[0], protoAddrParts[1], job)
if err != nil {
chErrors <- err
return
}
chErrors <- srv.Serve()
}()
}
for i := 0; i < len(protoAddrs); i++ {
err := <-chErrors
if err != nil {
return job.Error(err)
}
}
return engine.StatusOK
}
func AcceptConnections(job *engine.Job) engine.Status {
// Tell the init daemon we are accepting requests
go systemd.SdNotify("READY=1")
// close the lock so the listeners start accepting connections
if activationLock != nil {
close(activationLock)
}
return engine.StatusOK
}