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|
package compat
import (
"encoding/json"
"fmt"
"net/http"
"os"
"strings"
"errors"
"github.com/containers/podman/v4/libpod"
"github.com/containers/podman/v4/libpod/define"
"github.com/containers/podman/v4/pkg/api/handlers/utils"
api "github.com/containers/podman/v4/pkg/api/types"
"github.com/containers/podman/v4/pkg/copy"
"github.com/containers/podman/v4/pkg/domain/entities"
"github.com/containers/podman/v4/pkg/domain/infra/abi"
"github.com/gorilla/schema"
"github.com/sirupsen/logrus"
)
func Archive(w http.ResponseWriter, r *http.Request) {
decoder := r.Context().Value(api.DecoderKey).(*schema.Decoder)
runtime := r.Context().Value(api.RuntimeKey).(*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, http.StatusNotImplemented, fmt.Errorf("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, http.StatusBadRequest, fmt.Errorf("couldn't decode the query: %w", err))
return
}
if query.Path == "" {
utils.Error(w, http.StatusBadRequest, errors.New("missing `path` parameter"))
return
}
containerName := utils.GetName(r)
containerEngine := abi.ContainerEngine{Libpod: runtime}
statReport, err := containerEngine.ContainerStat(r.Context(), containerName, query.Path)
// NOTE
// The statReport may actually be set even in case of an error. That's
// the case when we're looking at a symlink pointing to nirvana. In
// such cases, we really need the FileInfo but we also need the error.
if statReport != nil {
statHeader, err := copy.EncodeFileInfo(&statReport.FileInfo)
if err != nil {
utils.Error(w, http.StatusInternalServerError, err)
return
}
w.Header().Add(copy.XDockerContainerPathStatHeader, statHeader)
}
if errors.Is(err, define.ErrNoSuchCtr) || errors.Is(err, copy.ErrENOENT) {
// 404 is returned for an absent container and path. The
// clients must deal with it accordingly.
utils.Error(w, http.StatusNotFound, err)
return
} else if err != nil {
utils.Error(w, http.StatusInternalServerError, err)
return
}
// Our work is done when the user is interested in the header only.
if r.Method == http.MethodHead {
w.WriteHeader(http.StatusOK)
return
}
copyFunc, err := containerEngine.ContainerCopyToArchive(r.Context(), containerName, query.Path, w)
if err != nil {
utils.Error(w, http.StatusInternalServerError, err)
return
}
w.Header().Set("Content-Type", "application/x-tar")
w.WriteHeader(http.StatusOK)
if err := copyFunc(); err != nil {
logrus.Error(err.Error())
}
}
func handlePut(w http.ResponseWriter, r *http.Request, decoder *schema.Decoder, runtime *libpod.Runtime) {
query := struct {
Path string `schema:"path"`
Chown bool `schema:"copyUIDGID"`
Rename string `schema:"rename"`
NoOverwriteDirNonDir bool `schema:"noOverwriteDirNonDir"`
}{
Chown: utils.IsLibpodRequest(r), // backward compatibility
}
err := decoder.Decode(&query, r.URL.Query())
if err != nil {
utils.Error(w, http.StatusBadRequest, fmt.Errorf("couldn't decode the query: %w", err))
return
}
var rename map[string]string
if query.Rename != "" {
if err := json.Unmarshal([]byte(query.Rename), &rename); err != nil {
utils.Error(w, http.StatusBadRequest, fmt.Errorf("couldn't decode the query field 'rename': %w", err))
return
}
}
containerName := utils.GetName(r)
containerEngine := abi.ContainerEngine{Libpod: runtime}
copyFunc, err := containerEngine.ContainerCopyFromArchive(r.Context(), containerName, query.Path, r.Body,
entities.CopyOptions{
Chown: query.Chown,
NoOverwriteDirNonDir: query.NoOverwriteDirNonDir,
Rename: rename,
})
if err != nil {
switch {
case errors.Is(err, define.ErrNoSuchCtr) || os.IsNotExist(err):
// 404 is returned for an absent container and path. The
// clients must deal with it accordingly.
utils.Error(w, http.StatusNotFound, fmt.Errorf("the container doesn't exists: %w", err))
case strings.Contains(err.Error(), "copier: put: error creating file"):
// Not the best test but need to break this out for compatibility
// See vendor/github.com/containers/buildah/copier/copier.go:1585
utils.Error(w, http.StatusBadRequest, err)
default:
utils.Error(w, http.StatusInternalServerError, err)
}
return
}
if err := copyFunc(); err != nil {
logrus.Error(err.Error())
utils.Error(w, http.StatusInternalServerError, err)
return
}
w.WriteHeader(http.StatusOK)
}
|
