1208 lines
32 KiB
Go
1208 lines
32 KiB
Go
package docker
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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/archive"
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"github.com/dotcloud/docker/auth"
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"github.com/dotcloud/docker/systemd"
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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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"mime"
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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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"os/exec"
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"regexp"
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"strconv"
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"strings"
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)
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const (
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APIVERSION = 1.8
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DEFAULTHTTPHOST = "127.0.0.1"
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DEFAULTHTTPPORT = 4243
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DEFAULTUNIXSOCKET = "/var/run/docker.sock"
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)
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type HttpApiFunc func(srv *Server, version float64, 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.HasPrefix(err.Error(), "Bad parameter") {
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statusCode = http.StatusBadRequest
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} else if strings.HasPrefix(err.Error(), "Conflict") {
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statusCode = http.StatusConflict
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} else if strings.HasPrefix(err.Error(), "Impossible") {
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statusCode = http.StatusNotAcceptable
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} else if strings.HasPrefix(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 interface{}) error {
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b, err := json.Marshal(v)
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if err != nil {
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return err
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}
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w.Header().Set("Content-Type", "application/json")
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w.WriteHeader(code)
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w.Write(b)
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return nil
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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 matchesContentType(contentType, expectedType string) bool {
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mimetype, _, err := mime.ParseMediaType(contentType)
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if err != nil {
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utils.Errorf("Error parsing media type: %s error: %s", contentType, err.Error())
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}
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return err == nil && mimetype == expectedType
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}
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func postAuth(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
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authConfig := &auth.AuthConfig{}
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err := json.NewDecoder(r.Body).Decode(authConfig)
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if err != nil {
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return err
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}
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status, err := auth.Login(authConfig, srv.HTTPRequestFactory(nil))
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if err != nil {
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return err
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}
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if status != "" {
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return writeJSON(w, http.StatusOK, &APIAuth{Status: status})
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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(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
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srv.Eng.ServeHTTP(w, r)
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return nil
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}
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func postContainersKill(srv *Server, version float64, 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 := srv.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(srv *Server, version float64, 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 := srv.Eng.Job("export", vars["name"])
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if err := job.Stdout.Add(w); 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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return nil
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}
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func getImagesJSON(srv *Server, version float64, 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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all, err := getBoolParam(r.Form.Get("all"))
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if err != nil {
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return err
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}
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filter := r.Form.Get("filter")
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outs, err := srv.Images(all, filter)
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if err != nil {
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return err
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}
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if version < 1.7 {
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outs2 := []APIImagesOld{}
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for _, ctnr := range outs {
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outs2 = append(outs2, ctnr.ToLegacy()...)
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}
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return writeJSON(w, http.StatusOK, outs2)
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}
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return writeJSON(w, http.StatusOK, outs)
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}
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func getImagesViz(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
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if version > 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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if err := srv.ImagesViz(w); 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 getInfo(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
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return writeJSON(w, http.StatusOK, srv.DockerInfo())
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}
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func getEvents(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
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sendEvent := func(wf *utils.WriteFlusher, event *utils.JSONMessage) error {
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b, err := json.Marshal(event)
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if err != nil {
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return fmt.Errorf("JSON error")
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}
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_, err = wf.Write(b)
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if err != nil {
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// On error, evict the listener
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utils.Errorf("%s", err)
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srv.Lock()
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delete(srv.listeners, r.RemoteAddr)
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srv.Unlock()
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return err
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}
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return nil
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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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listener := make(chan utils.JSONMessage)
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srv.Lock()
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srv.listeners[r.RemoteAddr] = listener
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srv.Unlock()
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since, err := strconv.ParseInt(r.Form.Get("since"), 10, 0)
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if err != nil {
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since = 0
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}
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w.Header().Set("Content-Type", "application/json")
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wf := utils.NewWriteFlusher(w)
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wf.Flush()
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if since != 0 {
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// If since, send previous events that happened after the timestamp
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for _, event := range srv.GetEvents() {
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if event.Time >= since {
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err := sendEvent(wf, &event)
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if err != nil && err.Error() == "JSON error" {
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continue
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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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}
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}
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}
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for event := range listener {
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err := sendEvent(wf, &event)
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if err != nil && err.Error() == "JSON error" {
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continue
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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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}
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return nil
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}
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func getImagesHistory(srv *Server, version float64, 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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name := vars["name"]
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outs, err := srv.ImageHistory(name)
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if err != nil {
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return err
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}
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return writeJSON(w, http.StatusOK, outs)
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}
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func getContainersChanges(srv *Server, version float64, 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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name := vars["name"]
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changesStr, err := srv.ContainerChanges(name)
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if err != nil {
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return err
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}
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return writeJSON(w, http.StatusOK, changesStr)
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}
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func getContainersTop(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
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if version < 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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procsStr, err := srv.ContainerTop(vars["name"], r.Form.Get("ps_args"))
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if err != nil {
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return err
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}
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return writeJSON(w, http.StatusOK, procsStr)
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}
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func getContainersJSON(srv *Server, version float64, 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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all, err := getBoolParam(r.Form.Get("all"))
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if err != nil {
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return err
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}
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size, err := getBoolParam(r.Form.Get("size"))
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if err != nil {
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return err
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}
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since := r.Form.Get("since")
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before := r.Form.Get("before")
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n, err := strconv.Atoi(r.Form.Get("limit"))
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if err != nil {
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n = -1
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}
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outs := srv.Containers(all, size, n, since, before)
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if version < 1.5 {
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outs2 := []APIContainersOld{}
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for _, ctnr := range outs {
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outs2 = append(outs2, *ctnr.ToLegacy())
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}
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return writeJSON(w, http.StatusOK, outs2)
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}
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return writeJSON(w, http.StatusOK, outs)
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}
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func postImagesTag(srv *Server, version float64, 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 := srv.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(srv *Server, version float64, 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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config := &Config{}
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if err := json.NewDecoder(r.Body).Decode(config); err != nil && err != io.EOF {
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utils.Errorf("%s", err)
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}
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job := srv.Eng.Job("commit")
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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("container", r.Form.Get("container"))
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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.SetenvJson("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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return writeJSON(w, http.StatusCreated, &APIID{id})
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}
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// Creates an image from Pull or from Import
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func postImagesCreate(srv *Server, version float64, 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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src := r.Form.Get("fromSrc")
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image := r.Form.Get("fromImage")
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tag := r.Form.Get("tag")
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repo := r.Form.Get("repo")
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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 version > 1.0 {
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w.Header().Set("Content-Type", "application/json")
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}
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sf := utils.NewStreamFormatter(version > 1.0)
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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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if err := srv.ImagePull(image, tag, w, sf, authConfig, metaHeaders, version > 1.3); err != nil {
|
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if sf.Used() {
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w.Write(sf.FormatError(err))
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return nil
|
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}
|
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return err
|
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}
|
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} else { //import
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if err := srv.ImageImport(src, repo, tag, r.Body, w, sf); err != nil {
|
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if sf.Used() {
|
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w.Write(sf.FormatError(err))
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return nil
|
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}
|
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return err
|
|
}
|
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}
|
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return nil
|
|
}
|
|
|
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func getImagesSearch(srv *Server, version float64, 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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term := r.Form.Get("term")
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outs, err := srv.ImagesSearch(term)
|
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if err != nil {
|
|
return err
|
|
}
|
|
|
|
return writeJSON(w, http.StatusOK, outs)
|
|
}
|
|
|
|
func postImagesInsert(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
|
|
if err := parseForm(r); err != nil {
|
|
return err
|
|
}
|
|
|
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url := r.Form.Get("url")
|
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path := r.Form.Get("path")
|
|
if vars == nil {
|
|
return fmt.Errorf("Missing parameter")
|
|
}
|
|
name := vars["name"]
|
|
if version > 1.0 {
|
|
w.Header().Set("Content-Type", "application/json")
|
|
}
|
|
sf := utils.NewStreamFormatter(version > 1.0)
|
|
err := srv.ImageInsert(name, url, path, w, sf)
|
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if err != nil {
|
|
if sf.Used() {
|
|
w.Write(sf.FormatError(err))
|
|
return nil
|
|
}
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func postImagesPush(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
|
|
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 := &auth.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 = &auth.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
|
|
}
|
|
|
|
}
|
|
|
|
if vars == nil {
|
|
return fmt.Errorf("Missing parameter")
|
|
}
|
|
name := vars["name"]
|
|
if version > 1.0 {
|
|
w.Header().Set("Content-Type", "application/json")
|
|
}
|
|
sf := utils.NewStreamFormatter(version > 1.0)
|
|
if err := srv.ImagePush(name, w, sf, authConfig, metaHeaders); err != nil {
|
|
if sf.Used() {
|
|
w.Write(sf.FormatError(err))
|
|
return nil
|
|
}
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func getImagesGet(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
|
|
name := vars["name"]
|
|
if version > 1.0 {
|
|
w.Header().Set("Content-Type", "application/x-tar")
|
|
}
|
|
return srv.ImageExport(name, w)
|
|
}
|
|
|
|
func postImagesLoad(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
|
|
return srv.ImageLoad(r.Body)
|
|
}
|
|
|
|
func postContainersCreate(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
|
|
if err := parseForm(r); err != nil {
|
|
return nil
|
|
}
|
|
out := &APIRun{}
|
|
job := srv.Eng.Job("create", r.Form.Get("name"))
|
|
if err := job.DecodeEnv(r.Body); err != nil {
|
|
return err
|
|
}
|
|
resolvConf, err := utils.GetResolvConf()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if !job.GetenvBool("NetworkDisabled") && len(job.Getenv("Dns")) == 0 && len(srv.runtime.config.Dns) == 0 && utils.CheckLocalDns(resolvConf) {
|
|
out.Warnings = append(out.Warnings, fmt.Sprintf("Docker detected local DNS server on resolv.conf. Using default external servers: %v", defaultDns))
|
|
job.SetenvList("Dns", defaultDns)
|
|
}
|
|
// Read container ID from the first line of stdout
|
|
job.Stdout.AddString(&out.ID)
|
|
// Read warnings from stderr
|
|
warnings := &bytes.Buffer{}
|
|
job.Stderr.Add(warnings)
|
|
if err := job.Run(); err != nil {
|
|
return err
|
|
}
|
|
// Parse warnings from stderr
|
|
scanner := bufio.NewScanner(warnings)
|
|
for scanner.Scan() {
|
|
out.Warnings = append(out.Warnings, scanner.Text())
|
|
}
|
|
if job.GetenvInt("Memory") > 0 && !srv.runtime.capabilities.MemoryLimit {
|
|
log.Println("WARNING: Your kernel does not support memory limit capabilities. Limitation discarded.")
|
|
out.Warnings = append(out.Warnings, "Your kernel does not support memory limit capabilities. Limitation discarded.")
|
|
}
|
|
if job.GetenvInt("Memory") > 0 && !srv.runtime.capabilities.SwapLimit {
|
|
log.Println("WARNING: Your kernel does not support swap limit capabilities. Limitation discarded.")
|
|
out.Warnings = append(out.Warnings, "Your kernel does not support memory swap capabilities. Limitation discarded.")
|
|
}
|
|
|
|
if !job.GetenvBool("NetworkDisabled") && srv.runtime.capabilities.IPv4ForwardingDisabled {
|
|
log.Println("Warning: IPv4 forwarding is disabled.")
|
|
out.Warnings = append(out.Warnings, "IPv4 forwarding is disabled.")
|
|
}
|
|
|
|
return writeJSON(w, http.StatusCreated, out)
|
|
}
|
|
|
|
func postContainersRestart(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
|
|
if err := parseForm(r); err != nil {
|
|
return err
|
|
}
|
|
t, err := strconv.Atoi(r.Form.Get("t"))
|
|
if err != nil || t < 0 {
|
|
t = 10
|
|
}
|
|
if vars == nil {
|
|
return fmt.Errorf("Missing parameter")
|
|
}
|
|
name := vars["name"]
|
|
if err := srv.ContainerRestart(name, t); err != nil {
|
|
return err
|
|
}
|
|
w.WriteHeader(http.StatusNoContent)
|
|
return nil
|
|
}
|
|
|
|
func deleteContainers(srv *Server, version float64, 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"]
|
|
|
|
removeVolume, err := getBoolParam(r.Form.Get("v"))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
removeLink, err := getBoolParam(r.Form.Get("link"))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if err := srv.ContainerDestroy(name, removeVolume, removeLink); err != nil {
|
|
return err
|
|
}
|
|
w.WriteHeader(http.StatusNoContent)
|
|
return nil
|
|
}
|
|
|
|
func deleteImages(srv *Server, version float64, 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"]
|
|
imgs, err := srv.ImageDelete(name, version > 1.1)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if imgs != nil {
|
|
if len(imgs) != 0 {
|
|
return writeJSON(w, http.StatusOK, imgs)
|
|
}
|
|
return fmt.Errorf("Conflict, %s wasn't deleted", name)
|
|
}
|
|
w.WriteHeader(http.StatusNoContent)
|
|
return nil
|
|
}
|
|
|
|
func postContainersStart(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
|
|
if vars == nil {
|
|
return fmt.Errorf("Missing parameter")
|
|
}
|
|
name := vars["name"]
|
|
job := srv.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(srv *Server, version float64, 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 := srv.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(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
|
|
if vars == nil {
|
|
return fmt.Errorf("Missing parameter")
|
|
}
|
|
job := srv.Eng.Job("wait", vars["name"])
|
|
var statusStr string
|
|
job.Stdout.AddString(&statusStr)
|
|
if err := job.Run(); err != nil {
|
|
return err
|
|
}
|
|
// Parse a 16-bit encoded integer to map typical unix exit status.
|
|
status, err := strconv.ParseInt(statusStr, 10, 16)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return writeJSON(w, http.StatusOK, &APIWait{StatusCode: int(status)})
|
|
}
|
|
|
|
func postContainersResize(srv *Server, version float64, 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 := srv.Eng.Job("resize", vars["name"], r.Form.Get("h"), r.Form.Get("w")).Run(); err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func postContainersAttach(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
|
|
if err := parseForm(r); err != nil {
|
|
return err
|
|
}
|
|
logs, err := getBoolParam(r.Form.Get("logs"))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
stream, err := getBoolParam(r.Form.Get("stream"))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
stdin, err := getBoolParam(r.Form.Get("stdin"))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
stdout, err := getBoolParam(r.Form.Get("stdout"))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
stderr, err := getBoolParam(r.Form.Get("stderr"))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if vars == nil {
|
|
return fmt.Errorf("Missing parameter")
|
|
}
|
|
name := vars["name"]
|
|
|
|
c, err := srv.ContainerInspect(name)
|
|
if 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.Config.Tty && version >= 1.6 {
|
|
errStream = utils.NewStdWriter(outStream, utils.Stderr)
|
|
outStream = utils.NewStdWriter(outStream, utils.Stdout)
|
|
} else {
|
|
errStream = outStream
|
|
}
|
|
|
|
if err := srv.ContainerAttach(name, logs, stream, stdin, stdout, stderr, inStream, outStream, errStream); err != nil {
|
|
fmt.Fprintf(outStream, "Error: %s\n", err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func wsContainersAttach(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
|
|
|
|
if err := parseForm(r); err != nil {
|
|
return err
|
|
}
|
|
logs, err := getBoolParam(r.Form.Get("logs"))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
stream, err := getBoolParam(r.Form.Get("stream"))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
stdin, err := getBoolParam(r.Form.Get("stdin"))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
stdout, err := getBoolParam(r.Form.Get("stdout"))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
stderr, err := getBoolParam(r.Form.Get("stderr"))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if vars == nil {
|
|
return fmt.Errorf("Missing parameter")
|
|
}
|
|
name := vars["name"]
|
|
|
|
if _, err := srv.ContainerInspect(name); err != nil {
|
|
return err
|
|
}
|
|
|
|
h := websocket.Handler(func(ws *websocket.Conn) {
|
|
defer ws.Close()
|
|
|
|
if err := srv.ContainerAttach(name, logs, stream, stdin, stdout, stderr, ws, ws, ws); err != nil {
|
|
utils.Errorf("Error: %s", err)
|
|
}
|
|
})
|
|
h.ServeHTTP(w, r)
|
|
|
|
return nil
|
|
}
|
|
|
|
func getContainersByName(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
|
|
if vars == nil {
|
|
return fmt.Errorf("Missing parameter")
|
|
}
|
|
name := vars["name"]
|
|
|
|
container, err := srv.ContainerInspect(name)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
_, err = srv.ImageInspect(name)
|
|
if err == nil {
|
|
return fmt.Errorf("Conflict between containers and images")
|
|
}
|
|
|
|
container.readHostConfig()
|
|
c := APIContainer{container, container.hostConfig}
|
|
|
|
return writeJSON(w, http.StatusOK, c)
|
|
}
|
|
|
|
func getImagesByName(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
|
|
if vars == nil {
|
|
return fmt.Errorf("Missing parameter")
|
|
}
|
|
name := vars["name"]
|
|
|
|
image, err := srv.ImageInspect(name)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
_, err = srv.ContainerInspect(name)
|
|
if err == nil {
|
|
return fmt.Errorf("Conflict between containers and images")
|
|
}
|
|
|
|
return writeJSON(w, http.StatusOK, image)
|
|
}
|
|
|
|
func postBuild(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
|
|
if version < 1.3 {
|
|
return fmt.Errorf("Multipart upload for build is no longer supported. Please upgrade your docker client.")
|
|
}
|
|
remoteURL := r.FormValue("remote")
|
|
repoName := r.FormValue("t")
|
|
rawSuppressOutput := r.FormValue("q")
|
|
rawNoCache := r.FormValue("nocache")
|
|
rawRm := r.FormValue("rm")
|
|
repoName, tag := utils.ParseRepositoryTag(repoName)
|
|
|
|
var context io.Reader
|
|
|
|
if remoteURL == "" {
|
|
context = r.Body
|
|
} else if utils.IsGIT(remoteURL) {
|
|
if !strings.HasPrefix(remoteURL, "git://") {
|
|
remoteURL = "https://" + remoteURL
|
|
}
|
|
root, err := ioutil.TempDir("", "docker-build-git")
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer os.RemoveAll(root)
|
|
|
|
if output, err := exec.Command("git", "clone", remoteURL, root).CombinedOutput(); err != nil {
|
|
return fmt.Errorf("Error trying to use git: %s (%s)", err, output)
|
|
}
|
|
|
|
c, err := archive.Tar(root, archive.Bzip2)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
context = c
|
|
} else if utils.IsURL(remoteURL) {
|
|
f, err := utils.Download(remoteURL)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer f.Body.Close()
|
|
dockerFile, err := ioutil.ReadAll(f.Body)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
c, err := MkBuildContext(string(dockerFile), nil)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
context = c
|
|
}
|
|
|
|
suppressOutput, err := getBoolParam(rawSuppressOutput)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
noCache, err := getBoolParam(rawNoCache)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
rm, err := getBoolParam(rawRm)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if version >= 1.8 {
|
|
w.Header().Set("Content-Type", "application/json")
|
|
}
|
|
sf := utils.NewStreamFormatter(version >= 1.8)
|
|
b := NewBuildFile(srv,
|
|
&StdoutFormater{
|
|
Writer: utils.NewWriteFlusher(w),
|
|
StreamFormatter: sf,
|
|
},
|
|
&StderrFormater{
|
|
Writer: utils.NewWriteFlusher(w),
|
|
StreamFormatter: sf,
|
|
},
|
|
!suppressOutput, !noCache, rm, utils.NewWriteFlusher(w), sf)
|
|
id, err := b.Build(context)
|
|
if err != nil {
|
|
if sf.Used() {
|
|
w.Write(sf.FormatError(err))
|
|
return nil
|
|
}
|
|
return fmt.Errorf("Error build: %s", err)
|
|
}
|
|
if repoName != "" {
|
|
srv.runtime.repositories.Set(repoName, tag, id, false)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func postContainersCopy(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
|
|
if vars == nil {
|
|
return fmt.Errorf("Missing parameter")
|
|
}
|
|
name := vars["name"]
|
|
|
|
copyData := &APICopy{}
|
|
contentType := r.Header.Get("Content-Type")
|
|
if contentType == "application/json" {
|
|
if err := json.NewDecoder(r.Body).Decode(copyData); err != nil {
|
|
return err
|
|
}
|
|
} else {
|
|
return fmt.Errorf("Content-Type not supported: %s", contentType)
|
|
}
|
|
|
|
if copyData.Resource == "" {
|
|
return fmt.Errorf("Path cannot be empty")
|
|
}
|
|
if copyData.Resource[0] == '/' {
|
|
copyData.Resource = copyData.Resource[1:]
|
|
}
|
|
|
|
if err := srv.ContainerCopy(name, copyData.Resource, w); err != nil {
|
|
utils.Errorf("%s", err.Error())
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func optionsHandler(srv *Server, version float64, 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(srv *Server, logging bool, localMethod string, localRoute string, handlerFunc HttpApiFunc) 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 && userAgent[1] != VERSION {
|
|
utils.Debugf("Warning: client and server don't have the same version (client: %s, server: %s)", userAgent[1], VERSION)
|
|
}
|
|
}
|
|
version, err := strconv.ParseFloat(mux.Vars(r)["version"], 64)
|
|
if err != nil {
|
|
version = APIVERSION
|
|
}
|
|
if srv.runtime.config.EnableCors {
|
|
writeCorsHeaders(w, r)
|
|
}
|
|
|
|
if version == 0 || version > APIVERSION {
|
|
w.WriteHeader(http.StatusNotFound)
|
|
return
|
|
}
|
|
|
|
if err := handlerFunc(srv, 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(srv *Server, logging bool) (*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(srv, logging, localMethod, localRoute, localFct)
|
|
|
|
// 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(srv *Server, apiversion float64, w http.ResponseWriter, req *http.Request) error {
|
|
router, err := createRouter(srv, false)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
// Insert APIVERSION into the request as a convenience
|
|
req.URL.Path = fmt.Sprintf("/v%g%s", apiversion, req.URL.Path)
|
|
router.ServeHTTP(w, req)
|
|
return nil
|
|
}
|
|
|
|
func ListenAndServe(proto, addr string, srv *Server, logging bool) error {
|
|
r, err := createRouter(srv, logging)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
l, e := net.Listen(proto, addr)
|
|
if e != nil {
|
|
return e
|
|
}
|
|
if proto == "unix" {
|
|
if err := os.Chmod(addr, 0660); err != nil {
|
|
return err
|
|
}
|
|
|
|
groups, err := ioutil.ReadFile("/etc/group")
|
|
if err != nil {
|
|
return err
|
|
}
|
|
re := regexp.MustCompile("(^|\n)docker:.*?:([0-9]+)")
|
|
if gidMatch := re.FindStringSubmatch(string(groups)); gidMatch != nil {
|
|
gid, err := strconv.Atoi(gidMatch[2])
|
|
if err != nil {
|
|
return err
|
|
}
|
|
utils.Debugf("docker group found. gid: %d", gid)
|
|
if err := os.Chown(addr, 0, gid); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
httpSrv := http.Server{Addr: addr, Handler: r}
|
|
|
|
log.Printf("Listening for HTTP on %s (%s)\n", addr, proto)
|
|
// Tell the init daemon we are accepting requests
|
|
go systemd.SdNotify("READY=1")
|
|
return httpSrv.Serve(l)
|
|
}
|