1224 lines
36 KiB
Go
1224 lines
36 KiB
Go
package api
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import (
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"bufio"
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"bytes"
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"code.google.com/p/go.net/websocket"
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"encoding/base64"
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"encoding/json"
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"expvar"
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"fmt"
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"github.com/dotcloud/docker/auth"
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"github.com/dotcloud/docker/engine"
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"github.com/dotcloud/docker/pkg/listenbuffer"
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"github.com/dotcloud/docker/pkg/systemd"
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"github.com/dotcloud/docker/pkg/user"
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"github.com/dotcloud/docker/pkg/version"
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"github.com/dotcloud/docker/utils"
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"github.com/gorilla/mux"
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"io"
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"io/ioutil"
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"log"
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"net"
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"net/http"
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"net/http/pprof"
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"os"
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"strconv"
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"strings"
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"syscall"
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"time"
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)
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var (
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activationLock chan struct{}
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)
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type HttpApiFunc func(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error
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func hijackServer(w http.ResponseWriter) (io.ReadCloser, io.Writer, error) {
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conn, _, err := w.(http.Hijacker).Hijack()
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if err != nil {
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return nil, nil, err
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}
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// Flush the options to make sure the client sets the raw mode
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conn.Write([]byte{})
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return conn, conn, nil
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}
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//If we don't do this, POST method without Content-type (even with empty body) will fail
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func parseForm(r *http.Request) error {
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if r == nil {
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return nil
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}
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if err := r.ParseForm(); err != nil && !strings.HasPrefix(err.Error(), "mime:") {
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return err
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}
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return nil
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}
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func parseMultipartForm(r *http.Request) error {
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if err := r.ParseMultipartForm(4096); err != nil && !strings.HasPrefix(err.Error(), "mime:") {
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return err
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}
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return nil
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}
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func httpError(w http.ResponseWriter, err error) {
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statusCode := http.StatusInternalServerError
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// FIXME: this is brittle and should not be necessary.
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// If we need to differentiate between different possible error types, we should
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// create appropriate error types with clearly defined meaning.
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if strings.Contains(err.Error(), "No such") {
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statusCode = http.StatusNotFound
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} else if strings.Contains(err.Error(), "Bad parameter") {
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statusCode = http.StatusBadRequest
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} else if strings.Contains(err.Error(), "Conflict") {
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statusCode = http.StatusConflict
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} else if strings.Contains(err.Error(), "Impossible") {
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statusCode = http.StatusNotAcceptable
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} else if strings.Contains(err.Error(), "Wrong login/password") {
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statusCode = http.StatusUnauthorized
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} else if strings.Contains(err.Error(), "hasn't been activated") {
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statusCode = http.StatusForbidden
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}
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if err != nil {
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utils.Errorf("HTTP Error: statusCode=%d %s", statusCode, err.Error())
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http.Error(w, err.Error(), statusCode)
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}
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}
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func writeJSON(w http.ResponseWriter, code int, v engine.Env) error {
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w.Header().Set("Content-Type", "application/json")
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w.WriteHeader(code)
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return v.Encode(w)
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}
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func streamJSON(job *engine.Job, w http.ResponseWriter, flush bool) {
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w.Header().Set("Content-Type", "application/json")
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if flush {
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job.Stdout.Add(utils.NewWriteFlusher(w))
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} else {
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job.Stdout.Add(w)
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}
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}
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func getBoolParam(value string) (bool, error) {
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if value == "" {
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return false, nil
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}
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ret, err := strconv.ParseBool(value)
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if err != nil {
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return false, fmt.Errorf("Bad parameter")
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}
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return ret, nil
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}
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func postAuth(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
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var (
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authConfig, err = ioutil.ReadAll(r.Body)
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job = eng.Job("auth")
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status string
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)
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if err != nil {
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return err
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}
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job.Setenv("authConfig", string(authConfig))
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job.Stdout.AddString(&status)
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if err = job.Run(); err != nil {
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return err
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}
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if status != "" {
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var env engine.Env
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env.Set("Status", status)
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return writeJSON(w, http.StatusOK, env)
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}
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w.WriteHeader(http.StatusNoContent)
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return nil
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}
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func getVersion(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
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w.Header().Set("Content-Type", "application/json")
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eng.ServeHTTP(w, r)
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return nil
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}
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func postContainersKill(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
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if vars == nil {
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return fmt.Errorf("Missing parameter")
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}
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if err := parseForm(r); err != nil {
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return err
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}
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job := eng.Job("kill", vars["name"])
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if sig := r.Form.Get("signal"); sig != "" {
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job.Args = append(job.Args, sig)
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}
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if err := job.Run(); err != nil {
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return err
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}
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w.WriteHeader(http.StatusNoContent)
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return nil
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}
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func getContainersExport(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
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if vars == nil {
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return fmt.Errorf("Missing parameter")
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}
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job := eng.Job("export", vars["name"])
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job.Stdout.Add(w)
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if err := job.Run(); err != nil {
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return err
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}
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return nil
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}
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func getImagesJSON(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
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if err := parseForm(r); err != nil {
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return err
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}
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var (
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err error
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outs *engine.Table
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job = eng.Job("images")
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)
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job.Setenv("filter", r.Form.Get("filter"))
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job.Setenv("all", r.Form.Get("all"))
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if version.GreaterThanOrEqualTo("1.7") {
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streamJSON(job, w, false)
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} else if outs, err = job.Stdout.AddListTable(); err != nil {
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return err
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}
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if err := job.Run(); err != nil {
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return err
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}
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if version.LessThan("1.7") && outs != nil { // Convert to legacy format
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outsLegacy := engine.NewTable("Created", 0)
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for _, out := range outs.Data {
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for _, repoTag := range out.GetList("RepoTags") {
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parts := strings.Split(repoTag, ":")
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outLegacy := &engine.Env{}
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outLegacy.Set("Repository", parts[0])
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outLegacy.Set("Tag", parts[1])
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outLegacy.Set("Id", out.Get("Id"))
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outLegacy.SetInt64("Created", out.GetInt64("Created"))
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outLegacy.SetInt64("Size", out.GetInt64("Size"))
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outLegacy.SetInt64("VirtualSize", out.GetInt64("VirtualSize"))
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outsLegacy.Add(outLegacy)
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}
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}
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w.Header().Set("Content-Type", "application/json")
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if _, err := outsLegacy.WriteListTo(w); err != nil {
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return err
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}
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}
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return nil
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}
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func getImagesViz(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
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if version.GreaterThan("1.6") {
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w.WriteHeader(http.StatusNotFound)
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return fmt.Errorf("This is now implemented in the client.")
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}
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eng.ServeHTTP(w, r)
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return nil
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}
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func getInfo(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
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w.Header().Set("Content-Type", "application/json")
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eng.ServeHTTP(w, r)
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return nil
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}
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func getEvents(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
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if err := parseForm(r); err != nil {
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return err
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}
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var job = eng.Job("events", r.RemoteAddr)
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streamJSON(job, w, true)
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job.Setenv("since", r.Form.Get("since"))
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return job.Run()
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}
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func getImagesHistory(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
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if vars == nil {
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return fmt.Errorf("Missing parameter")
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}
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var job = eng.Job("history", vars["name"])
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streamJSON(job, w, false)
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if err := job.Run(); err != nil {
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return err
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}
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return nil
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}
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func getContainersChanges(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
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if vars == nil {
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return fmt.Errorf("Missing parameter")
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}
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var job = eng.Job("changes", vars["name"])
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streamJSON(job, w, false)
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return job.Run()
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}
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func getContainersTop(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
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if version.LessThan("1.4") {
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return fmt.Errorf("top was improved a lot since 1.3, Please upgrade your docker client.")
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}
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if vars == nil {
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return fmt.Errorf("Missing parameter")
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}
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if err := parseForm(r); err != nil {
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return err
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}
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job := eng.Job("top", vars["name"], r.Form.Get("ps_args"))
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streamJSON(job, w, false)
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return job.Run()
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}
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func getContainersJSON(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
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if err := parseForm(r); err != nil {
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return err
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}
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var (
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err error
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outs *engine.Table
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job = eng.Job("containers")
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)
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job.Setenv("all", r.Form.Get("all"))
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job.Setenv("size", r.Form.Get("size"))
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job.Setenv("since", r.Form.Get("since"))
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job.Setenv("before", r.Form.Get("before"))
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job.Setenv("limit", r.Form.Get("limit"))
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if version.GreaterThanOrEqualTo("1.5") {
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streamJSON(job, w, false)
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} else if outs, err = job.Stdout.AddTable(); err != nil {
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return err
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}
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if err = job.Run(); err != nil {
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return err
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}
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if version.LessThan("1.5") { // Convert to legacy format
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for _, out := range outs.Data {
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ports := engine.NewTable("", 0)
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ports.ReadListFrom([]byte(out.Get("Ports")))
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out.Set("Ports", displayablePorts(ports))
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}
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w.Header().Set("Content-Type", "application/json")
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if _, err = outs.WriteListTo(w); err != nil {
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return err
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}
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}
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return nil
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}
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func postImagesTag(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
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if err := parseForm(r); err != nil {
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return err
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}
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if vars == nil {
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return fmt.Errorf("Missing parameter")
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}
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job := eng.Job("tag", vars["name"], r.Form.Get("repo"), r.Form.Get("tag"))
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job.Setenv("force", r.Form.Get("force"))
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if err := job.Run(); err != nil {
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return err
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}
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w.WriteHeader(http.StatusCreated)
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return nil
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}
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func postCommit(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
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if err := parseForm(r); err != nil {
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return err
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}
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var (
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config engine.Env
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env engine.Env
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job = eng.Job("commit", r.Form.Get("container"))
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)
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if err := config.Decode(r.Body); err != nil {
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utils.Errorf("%s", err)
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}
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job.Setenv("repo", r.Form.Get("repo"))
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job.Setenv("tag", r.Form.Get("tag"))
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job.Setenv("author", r.Form.Get("author"))
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job.Setenv("comment", r.Form.Get("comment"))
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job.SetenvSubEnv("config", &config)
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var id string
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job.Stdout.AddString(&id)
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if err := job.Run(); err != nil {
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return err
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}
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env.Set("Id", id)
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return writeJSON(w, http.StatusCreated, env)
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}
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// Creates an image from Pull or from Import
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func postImagesCreate(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
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if err := parseForm(r); err != nil {
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return err
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}
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var (
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image = r.Form.Get("fromImage")
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tag = r.Form.Get("tag")
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job *engine.Job
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)
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authEncoded := r.Header.Get("X-Registry-Auth")
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authConfig := &auth.AuthConfig{}
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if authEncoded != "" {
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authJson := base64.NewDecoder(base64.URLEncoding, strings.NewReader(authEncoded))
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if err := json.NewDecoder(authJson).Decode(authConfig); err != nil {
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// for a pull it is not an error if no auth was given
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// to increase compatibility with the existing api it is defaulting to be empty
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authConfig = &auth.AuthConfig{}
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}
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}
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if image != "" { //pull
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metaHeaders := map[string][]string{}
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for k, v := range r.Header {
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if strings.HasPrefix(k, "X-Meta-") {
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metaHeaders[k] = v
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}
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}
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job = eng.Job("pull", r.Form.Get("fromImage"), tag)
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job.SetenvBool("parallel", version.GreaterThan("1.3"))
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job.SetenvJson("metaHeaders", metaHeaders)
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job.SetenvJson("authConfig", authConfig)
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} else { //import
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job = eng.Job("import", r.Form.Get("fromSrc"), r.Form.Get("repo"), tag)
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job.Stdin.Add(r.Body)
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}
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if version.GreaterThan("1.0") {
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job.SetenvBool("json", true)
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streamJSON(job, w, true)
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} else {
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job.Stdout.Add(utils.NewWriteFlusher(w))
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}
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if err := job.Run(); err != nil {
|
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if !job.Stdout.Used() {
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return err
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}
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sf := utils.NewStreamFormatter(version.GreaterThan("1.0"))
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w.Write(sf.FormatError(err))
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}
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return nil
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}
|
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|
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func getImagesSearch(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
|
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if err := parseForm(r); err != nil {
|
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return err
|
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}
|
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var (
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authEncoded = r.Header.Get("X-Registry-Auth")
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authConfig = &auth.AuthConfig{}
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metaHeaders = map[string][]string{}
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)
|
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|
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if authEncoded != "" {
|
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authJson := base64.NewDecoder(base64.URLEncoding, strings.NewReader(authEncoded))
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if err := json.NewDecoder(authJson).Decode(authConfig); err != nil {
|
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// for a search it is not an error if no auth was given
|
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// to increase compatibility with the existing api it is defaulting to be empty
|
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authConfig = &auth.AuthConfig{}
|
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}
|
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}
|
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for k, v := range r.Header {
|
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if strings.HasPrefix(k, "X-Meta-") {
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metaHeaders[k] = v
|
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}
|
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}
|
|
|
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var job = eng.Job("search", r.Form.Get("term"))
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job.SetenvJson("metaHeaders", metaHeaders)
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job.SetenvJson("authConfig", authConfig)
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streamJSON(job, w, false)
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return job.Run()
|
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}
|
|
|
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func postImagesInsert(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
|
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if err := parseForm(r); err != nil {
|
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return err
|
|
}
|
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if vars == nil {
|
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return fmt.Errorf("Missing parameter")
|
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}
|
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job := eng.Job("insert", vars["name"], r.Form.Get("url"), r.Form.Get("path"))
|
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if version.GreaterThan("1.0") {
|
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job.SetenvBool("json", true)
|
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streamJSON(job, w, false)
|
|
} else {
|
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job.Stdout.Add(w)
|
|
}
|
|
if err := job.Run(); err != nil {
|
|
if !job.Stdout.Used() {
|
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return err
|
|
}
|
|
sf := utils.NewStreamFormatter(version.GreaterThan("1.0"))
|
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w.Write(sf.FormatError(err))
|
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}
|
|
|
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return nil
|
|
}
|
|
|
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func postImagesPush(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
|
|
if vars == nil {
|
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return fmt.Errorf("Missing parameter")
|
|
}
|
|
|
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metaHeaders := map[string][]string{}
|
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for k, v := range r.Header {
|
|
if strings.HasPrefix(k, "X-Meta-") {
|
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metaHeaders[k] = v
|
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}
|
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}
|
|
if err := parseForm(r); err != nil {
|
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return err
|
|
}
|
|
authConfig := &auth.AuthConfig{}
|
|
|
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authEncoded := r.Header.Get("X-Registry-Auth")
|
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if authEncoded != "" {
|
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// the new format is to handle the authConfig as a header
|
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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
|
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authConfig = &auth.AuthConfig{}
|
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}
|
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} else {
|
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// the old format is supported for compatibility if there was no authConfig header
|
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if err := json.NewDecoder(r.Body).Decode(authConfig); err != nil {
|
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return err
|
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}
|
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}
|
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|
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job := eng.Job("push", vars["name"])
|
|
job.SetenvJson("metaHeaders", metaHeaders)
|
|
job.SetenvJson("authConfig", authConfig)
|
|
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 version.GreaterThan("1.0") {
|
|
w.Header().Set("Content-Type", "application/x-tar")
|
|
}
|
|
job := eng.Job("image_export", vars["name"])
|
|
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
|
|
outId string
|
|
warnings = bytes.NewBuffer(nil)
|
|
)
|
|
if err := job.DecodeEnv(r.Body); err != nil {
|
|
return err
|
|
}
|
|
// Read container ID from the first line of stdout
|
|
job.Stdout.AddString(&outId)
|
|
// 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", outId)
|
|
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 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("container_delete", vars["name"])
|
|
job.Setenv("removeVolume", r.Form.Get("v"))
|
|
job.Setenv("removeLink", r.Form.Get("link"))
|
|
job.Setenv("forceRemove", r.Form.Get("force"))
|
|
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"))
|
|
|
|
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")
|
|
}
|
|
name := vars["name"]
|
|
job := eng.Job("start", name)
|
|
// allow a nil body for backwards compatibility
|
|
if r.Body != nil {
|
|
if MatchesContentType(r.Header.Get("Content-Type"), "application/json") {
|
|
if err := job.DecodeEnv(r.Body); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
if err := job.Run(); err != 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 {
|
|
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
|
|
status string
|
|
job = eng.Job("wait", vars["name"])
|
|
)
|
|
job.Stdout.AddString(&status)
|
|
if err := job.Run(); err != nil {
|
|
return err
|
|
}
|
|
// Parse a 16-bit encoded integer to map typical unix exit status.
|
|
_, err := strconv.ParseInt(status, 10, 16)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
env.Set("StatusCode", status)
|
|
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("inspect", vars["name"], "container")
|
|
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 func() {
|
|
if tcpc, ok := inStream.(*net.TCPConn); ok {
|
|
tcpc.CloseWrite()
|
|
} else {
|
|
inStream.Close()
|
|
}
|
|
}()
|
|
defer func() {
|
|
if tcpc, ok := outStream.(*net.TCPConn); ok {
|
|
tcpc.CloseWrite()
|
|
} else if closer, ok := outStream.(io.Closer); ok {
|
|
closer.Close()
|
|
}
|
|
}()
|
|
|
|
var errStream io.Writer
|
|
|
|
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 = utils.NewStdWriter(outStream, utils.Stderr)
|
|
outStream = utils.NewStdWriter(outStream, utils.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: %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("inspect", vars["name"], "container").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 {
|
|
utils.Errorf("Error: %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("inspect", vars["name"], "container")
|
|
streamJSON(job, w, false)
|
|
job.SetenvBool("conflict", true) //conflict=true to detect conflict between containers and images in the job
|
|
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("inspect", vars["name"], "image")
|
|
streamJSON(job, w, false)
|
|
job.SetenvBool("conflict", true) //conflict=true to detect conflict between containers and images in the job
|
|
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 = &auth.AuthConfig{}
|
|
configFileEncoded = r.Header.Get("X-Registry-Config")
|
|
configFile = &auth.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 = &auth.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 = &auth.ConfigFile{}
|
|
}
|
|
}
|
|
|
|
if version.GreaterThanOrEqualTo("1.8") {
|
|
job.SetenvBool("json", true)
|
|
streamJSON(job, w, true)
|
|
} else {
|
|
job.Stdout.Add(utils.NewWriteFlusher(w))
|
|
}
|
|
job.Stdin.Add(r.Body)
|
|
job.Setenv("remote", r.FormValue("remote"))
|
|
job.Setenv("t", r.FormValue("t"))
|
|
job.Setenv("q", r.FormValue("q"))
|
|
job.Setenv("nocache", r.FormValue("nocache"))
|
|
job.Setenv("rm", r.FormValue("rm"))
|
|
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 contentType := r.Header.Get("Content-Type"); contentType == "application/json" {
|
|
if err := copyData.Decode(r.Body); err != nil {
|
|
return err
|
|
}
|
|
} else {
|
|
return fmt.Errorf("Content-Type not supported: %s", contentType)
|
|
}
|
|
|
|
if copyData.Get("Resource") == "" {
|
|
return fmt.Errorf("Path cannot be empty")
|
|
}
|
|
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)
|
|
if err := job.Run(); err != nil {
|
|
utils.Errorf("%s", err.Error())
|
|
if strings.Contains(err.Error(), "No such container") {
|
|
w.WriteHeader(http.StatusNotFound)
|
|
}
|
|
}
|
|
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")
|
|
w.Header().Add("Access-Control-Allow-Methods", "GET, POST, DELETE, PUT, OPTIONS")
|
|
}
|
|
|
|
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
|
|
utils.Debugf("Calling %s %s", localMethod, localRoute)
|
|
|
|
if logging {
|
|
log.Println(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(userAgent[1]) {
|
|
utils.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 = APIVERSION
|
|
}
|
|
if enableCors {
|
|
writeCorsHeaders(w, r)
|
|
}
|
|
|
|
if version.GreaterThan(APIVERSION) {
|
|
http.Error(w, fmt.Errorf("client and server don't have same version (client : %s, server: %s)", version, APIVERSION).Error(), http.StatusNotFound)
|
|
return
|
|
}
|
|
|
|
if err := handlerFunc(eng, version, w, r, mux.Vars(r)); err != nil {
|
|
utils.Errorf("Error: %s", 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/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, error) {
|
|
r := mux.NewRouter()
|
|
if os.Getenv("DEBUG") != "" {
|
|
AttachProfiler(r)
|
|
}
|
|
m := map[string]map[string]HttpApiFunc{
|
|
"GET": {
|
|
"/events": getEvents,
|
|
"/info": getInfo,
|
|
"/version": getVersion,
|
|
"/images/json": getImagesJSON,
|
|
"/images/viz": getImagesViz,
|
|
"/images/search": getImagesSearch,
|
|
"/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:.*}/attach/ws": wsContainersAttach,
|
|
},
|
|
"POST": {
|
|
"/auth": postAuth,
|
|
"/commit": postCommit,
|
|
"/build": postBuild,
|
|
"/images/create": postImagesCreate,
|
|
"/images/{name:.*}/insert": postImagesInsert,
|
|
"/images/load": postImagesLoad,
|
|
"/images/{name:.*}/push": postImagesPush,
|
|
"/images/{name:.*}/tag": postImagesTag,
|
|
"/containers/create": postContainersCreate,
|
|
"/containers/{name:.*}/kill": postContainersKill,
|
|
"/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,
|
|
},
|
|
"DELETE": {
|
|
"/containers/{name:.*}": deleteContainers,
|
|
"/images/{name:.*}": deleteImages,
|
|
},
|
|
"OPTIONS": {
|
|
"": optionsHandler,
|
|
},
|
|
}
|
|
|
|
for method, routes := range m {
|
|
for route, fct := range routes {
|
|
utils.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, nil
|
|
}
|
|
|
|
// 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) error {
|
|
router, err := createRouter(eng, false, true, "")
|
|
if err != nil {
|
|
return err
|
|
}
|
|
// Insert APIVERSION into the request as a convenience
|
|
req.URL.Path = fmt.Sprintf("/v%s%s", apiversion, req.URL.Path)
|
|
router.ServeHTTP(w, req)
|
|
return nil
|
|
}
|
|
|
|
// ServeFD creates an http.Server and sets it up to serve given a socket activated
|
|
// argument.
|
|
func ServeFd(addr string, handle http.Handler) error {
|
|
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
|
|
// "initserver" job has completed. 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: handle}
|
|
chErrors <- httpSrv.Serve(listener)
|
|
}()
|
|
}
|
|
|
|
for i := 0; i < len(ls); i += 1 {
|
|
err := <-chErrors
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func lookupGidByName(nameOrGid string) (int, error) {
|
|
groups, err := user.ParseGroupFilter(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 changeGroup(addr string, nameOrGid string) error {
|
|
gid, err := lookupGidByName(nameOrGid)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
utils.Debugf("%s group found. gid: %d", nameOrGid, gid)
|
|
return os.Chown(addr, 0, gid)
|
|
}
|
|
|
|
// ListenAndServe sets up the required http.Server and gets it listening for
|
|
// each addr passed in and does protocol specific checking.
|
|
func ListenAndServe(proto, addr string, eng *engine.Engine, logging, enableCors bool, dockerVersion string, socketGroup string) error {
|
|
r, err := createRouter(eng, logging, enableCors, dockerVersion)
|
|
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if proto == "fd" {
|
|
return ServeFd(addr, r)
|
|
}
|
|
|
|
if proto == "unix" {
|
|
if err := syscall.Unlink(addr); err != nil && !os.IsNotExist(err) {
|
|
return err
|
|
}
|
|
}
|
|
|
|
l, err := listenbuffer.NewListenBuffer(proto, addr, activationLock, 15*time.Minute)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// Basic error and sanity checking
|
|
switch proto {
|
|
case "tcp":
|
|
if !strings.HasPrefix(addr, "127.0.0.1") {
|
|
log.Println("/!\\ DON'T BIND ON ANOTHER IP ADDRESS THAN 127.0.0.1 IF YOU DON'T KNOW WHAT YOU'RE DOING /!\\")
|
|
}
|
|
case "unix":
|
|
if err := os.Chmod(addr, 0660); err != nil {
|
|
return err
|
|
}
|
|
|
|
if socketGroup != "" {
|
|
if err := changeGroup(addr, socketGroup); err != nil {
|
|
if socketGroup == "docker" {
|
|
// if the user hasn't explicitly specified the group ownership, don't fail on errors.
|
|
utils.Debugf("Warning: could not chgrp %s to docker: %s", addr, err.Error())
|
|
} else {
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
default:
|
|
return fmt.Errorf("Invalid protocol format.")
|
|
}
|
|
|
|
httpSrv := http.Server{Addr: addr, Handler: r}
|
|
return httpSrv.Serve(l)
|
|
}
|
|
|
|
// 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 {
|
|
var (
|
|
protoAddrs = job.Args
|
|
chErrors = make(chan error, len(protoAddrs))
|
|
)
|
|
activationLock = make(chan struct{})
|
|
|
|
if err := job.Eng.Register("acceptconnections", AcceptConnections); err != nil {
|
|
return job.Error(err)
|
|
}
|
|
|
|
for _, protoAddr := range protoAddrs {
|
|
protoAddrParts := strings.SplitN(protoAddr, "://", 2)
|
|
go func() {
|
|
log.Printf("Listening for HTTP on %s (%s)\n", protoAddrParts[0], protoAddrParts[1])
|
|
chErrors <- ListenAndServe(protoAddrParts[0], protoAddrParts[1], job.Eng, job.GetenvBool("Logging"), job.GetenvBool("EnableCors"), job.Getenv("Version"), job.Getenv("SocketGroup"))
|
|
}()
|
|
}
|
|
|
|
for i := 0; i < len(protoAddrs); i += 1 {
|
|
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
|
|
close(activationLock)
|
|
|
|
return engine.StatusOK
|
|
}
|