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|
package compat
import (
"bytes"
"encoding/base64"
"encoding/json"
"fmt"
"net/http"
"os"
"time"
"github.com/containers/podman/v2/libpod"
"github.com/containers/podman/v2/libpod/define"
"github.com/containers/podman/v2/pkg/api/handlers/utils"
"github.com/containers/podman/v2/pkg/copy"
"github.com/gorilla/schema"
"github.com/pkg/errors"
)
func Archive(w http.ResponseWriter, r *http.Request) {
decoder := r.Context().Value("decoder").(*schema.Decoder)
runtime := r.Context().Value("runtime").(*libpod.Runtime)
switch r.Method {
case http.MethodPut:
handlePut(w, r, decoder, runtime)
case http.MethodHead, http.MethodGet:
handleHeadAndGet(w, r, decoder, runtime)
default:
utils.Error(w, fmt.Sprintf("unsupported method: %v", r.Method), http.StatusNotImplemented, errors.New(fmt.Sprintf("unsupported method: %v", r.Method)))
}
}
func handleHeadAndGet(w http.ResponseWriter, r *http.Request, decoder *schema.Decoder, runtime *libpod.Runtime) {
query := struct {
Path string `schema:"path"`
}{}
err := decoder.Decode(&query, r.URL.Query())
if err != nil {
utils.Error(w, "Bad Request.", http.StatusBadRequest, errors.Wrap(err, "couldn't decode the query"))
return
}
if query.Path == "" {
utils.Error(w, "Bad Request.", http.StatusBadRequest, errors.New("missing `path` parameter"))
return
}
containerName := utils.GetName(r)
ctr, err := runtime.LookupContainer(containerName)
if errors.Cause(err) == define.ErrNoSuchCtr {
utils.Error(w, "Not found.", http.StatusNotFound, errors.Wrap(err, "the container doesn't exists"))
return
} else if err != nil {
utils.Error(w, "Something went wrong.", http.StatusInternalServerError, err)
return
}
source, err := copy.CopyItemForContainer(ctr, query.Path, true, true)
defer source.CleanUp()
if err != nil {
utils.Error(w, "Not found.", http.StatusNotFound, errors.Wrapf(err, "error stating container path %q", query.Path))
return
}
// NOTE: Docker always sets the header.
info, err := source.Stat()
if err != nil {
utils.Error(w, "Not found.", http.StatusNotFound, errors.Wrapf(err, "error stating container path %q", query.Path))
return
}
statHeader, err := fileInfoToDockerStats(info)
if err != nil {
utils.Error(w, "Something went wrong", http.StatusInternalServerError, err)
return
}
w.Header().Add("X-Docker-Container-Path-Stat", statHeader)
// Our work is done when the user is interested in the header only.
if r.Method == http.MethodHead {
w.WriteHeader(http.StatusOK)
return
}
// Alright, the users wants data from the container.
destination, err := copy.CopyItemForWriter(w)
if err != nil {
utils.Error(w, "Something went wrong", http.StatusInternalServerError, err)
return
}
w.WriteHeader(http.StatusOK)
if err := copy.Copy(&source, &destination, false); err != nil {
utils.Error(w, "Something went wrong", http.StatusInternalServerError, err)
return
}
}
func fileInfoToDockerStats(info *copy.FileInfo) (string, error) {
dockerStats := struct {
Name string `json:"name"`
Size int64 `json:"size"`
Mode os.FileMode `json:"mode"`
ModTime time.Time `json:"mtime"`
LinkTarget string `json:"linkTarget"`
}{
Name: info.Name,
Size: info.Size,
Mode: info.Mode,
ModTime: info.ModTime,
LinkTarget: info.LinkTarget,
}
jsonBytes, err := json.Marshal(&dockerStats)
if err != nil {
return "", errors.Wrap(err, "failed to serialize file stats")
}
buff := bytes.NewBuffer(make([]byte, 0, 128))
base64encoder := base64.NewEncoder(base64.StdEncoding, buff)
_, err = base64encoder.Write(jsonBytes)
if err != nil {
return "", err
}
err = base64encoder.Close()
if err != nil {
return "", err
}
return buff.String(), nil
}
func handlePut(w http.ResponseWriter, r *http.Request, decoder *schema.Decoder, runtime *libpod.Runtime) {
query := struct {
Path string `schema:"path"`
// TODO handle params below
NoOverwriteDirNonDir bool `schema:"noOverwriteDirNonDir"`
CopyUIDGID bool `schema:"copyUIDGID"`
}{}
err := decoder.Decode(&query, r.URL.Query())
if err != nil {
utils.Error(w, "Bad Request.", http.StatusBadRequest, errors.Wrap(err, "couldn't decode the query"))
return
}
ctrName := utils.GetName(r)
ctr, err := runtime.LookupContainer(ctrName)
if err != nil {
utils.Error(w, "Not found", http.StatusNotFound, errors.Wrapf(err, "the %s container doesn't exists", ctrName))
return
}
destination, err := copy.CopyItemForContainer(ctr, query.Path, true, false)
defer destination.CleanUp()
if err != nil {
utils.Error(w, "Something went wrong", http.StatusInternalServerError, err)
return
}
source, err := copy.CopyItemForReader(r.Body)
defer source.CleanUp()
if err != nil {
utils.Error(w, "Something went wrong", http.StatusInternalServerError, err)
return
}
w.WriteHeader(http.StatusOK)
if err := copy.Copy(&source, &destination, false); err != nil {
utils.Error(w, "Something went wrong", http.StatusInternalServerError, err)
return
}
}
|
