mirror of https://github.com/containers/podman.git
545 lines
18 KiB
Go
545 lines
18 KiB
Go
package compat
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import (
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"encoding/json"
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"fmt"
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"io/ioutil"
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"net/http"
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"os"
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"strings"
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"github.com/containers/buildah"
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"github.com/containers/common/libimage"
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"github.com/containers/common/pkg/config"
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"github.com/containers/image/v5/manifest"
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"github.com/containers/image/v5/types"
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"github.com/containers/podman/v3/libpod"
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"github.com/containers/podman/v3/pkg/api/handlers"
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"github.com/containers/podman/v3/pkg/api/handlers/utils"
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api "github.com/containers/podman/v3/pkg/api/types"
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"github.com/containers/podman/v3/pkg/auth"
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"github.com/containers/podman/v3/pkg/domain/entities"
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"github.com/containers/podman/v3/pkg/domain/infra/abi"
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"github.com/containers/storage"
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"github.com/gorilla/schema"
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"github.com/opencontainers/go-digest"
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"github.com/pkg/errors"
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"github.com/sirupsen/logrus"
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)
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// mergeNameAndTagOrDigest creates an image reference as string from the
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// provided image name and tagOrDigest which can be a tag, a digest or empty.
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func mergeNameAndTagOrDigest(name, tagOrDigest string) string {
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if len(tagOrDigest) == 0 {
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return name
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}
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separator := ":" // default to tag
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if _, err := digest.Parse(tagOrDigest); err == nil {
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// We have a digest, so let's change the separator.
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separator = "@"
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}
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return fmt.Sprintf("%s%s%s", name, separator, tagOrDigest)
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}
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func ExportImage(w http.ResponseWriter, r *http.Request) {
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// 200 ok
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// 500 server
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runtime := r.Context().Value(api.RuntimeKey).(*libpod.Runtime)
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tmpfile, err := ioutil.TempFile("", "api.tar")
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if err != nil {
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utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "unable to create tempfile"))
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return
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}
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defer os.Remove(tmpfile.Name())
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name := utils.GetName(r)
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possiblyNormalizedName, err := utils.NormalizeToDockerHub(r, name)
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if err != nil {
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utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "error normalizing image"))
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return
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}
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imageEngine := abi.ImageEngine{Libpod: runtime}
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saveOptions := entities.ImageSaveOptions{
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Format: "docker-archive",
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Output: tmpfile.Name(),
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}
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if err := imageEngine.Save(r.Context(), possiblyNormalizedName, nil, saveOptions); err != nil {
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if errors.Cause(err) == storage.ErrImageUnknown {
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utils.ImageNotFound(w, name, errors.Wrapf(err, "failed to find image %s", name))
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return
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}
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utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "unable to create tempfile"))
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return
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}
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if err := tmpfile.Close(); err != nil {
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utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "unable to close tempfile"))
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return
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}
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rdr, err := os.Open(tmpfile.Name())
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if err != nil {
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utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "failed to read the exported tarfile"))
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return
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}
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defer rdr.Close()
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utils.WriteResponse(w, http.StatusOK, rdr)
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}
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func CommitContainer(w http.ResponseWriter, r *http.Request) {
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decoder := r.Context().Value(api.DecoderKey).(*schema.Decoder)
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runtime := r.Context().Value(api.RuntimeKey).(*libpod.Runtime)
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query := struct {
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Author string `schema:"author"`
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Changes string `schema:"changes"`
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Comment string `schema:"comment"`
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Container string `schema:"container"`
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Pause bool `schema:"pause"`
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Repo string `schema:"repo"`
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Tag string `schema:"tag"`
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// fromSrc string # fromSrc is currently unused
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}{
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Tag: "latest",
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}
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if err := decoder.Decode(&query, r.URL.Query()); err != nil {
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utils.Error(w, "Something went wrong.", http.StatusBadRequest, errors.Wrapf(err, "failed to parse parameters for %s", r.URL.String()))
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return
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}
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rtc, err := runtime.GetConfig()
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if err != nil {
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utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "Decode()"))
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return
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}
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sc := runtime.SystemContext()
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options := libpod.ContainerCommitOptions{
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Pause: true,
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}
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options.CommitOptions = buildah.CommitOptions{
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SignaturePolicyPath: rtc.Engine.SignaturePolicyPath,
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ReportWriter: os.Stderr,
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SystemContext: sc,
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PreferredManifestType: manifest.DockerV2Schema2MediaType,
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}
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input := handlers.CreateContainerConfig{}
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if err := json.NewDecoder(r.Body).Decode(&input); err != nil {
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utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "Decode()"))
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return
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}
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options.Message = query.Comment
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options.Author = query.Author
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options.Pause = query.Pause
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options.Changes = strings.Fields(query.Changes)
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ctr, err := runtime.LookupContainer(query.Container)
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if err != nil {
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utils.Error(w, "Something went wrong.", http.StatusNotFound, err)
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return
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}
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var destImage string
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if len(query.Repo) > 1 {
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destImage = fmt.Sprintf("%s:%s", query.Repo, query.Tag)
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possiblyNormalizedName, err := utils.NormalizeToDockerHub(r, destImage)
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if err != nil {
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utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "error normalizing image"))
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return
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}
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destImage = possiblyNormalizedName
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}
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commitImage, err := ctr.Commit(r.Context(), destImage, options)
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if err != nil && !strings.Contains(err.Error(), "is not running") {
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utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrapf(err, "CommitFailure"))
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return
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}
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utils.WriteResponse(w, http.StatusCreated, handlers.IDResponse{ID: commitImage.ID()}) // nolint
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}
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func CreateImageFromSrc(w http.ResponseWriter, r *http.Request) {
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// 200 no error
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// 404 repo does not exist or no read access
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// 500 internal
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decoder := r.Context().Value(api.DecoderKey).(*schema.Decoder)
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runtime := r.Context().Value(api.RuntimeKey).(*libpod.Runtime)
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query := struct {
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Changes []string `schema:"changes"`
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FromSrc string `schema:"fromSrc"`
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Message string `schema:"message"`
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Platform string `schema:"platform"`
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Repo string `shchema:"repo"`
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}{
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// This is where you can override the golang default value for one of fields
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}
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if err := decoder.Decode(&query, r.URL.Query()); err != nil {
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utils.Error(w, "Something went wrong.", http.StatusBadRequest, errors.Wrapf(err, "failed to parse parameters for %s", r.URL.String()))
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return
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}
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// fromSrc – Source to import. The value may be a URL from which the image can be retrieved or - to read the image from the request body. This parameter may only be used when importing an image.
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source := query.FromSrc
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if source == "-" {
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f, err := ioutil.TempFile("", "api_load.tar")
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if err != nil {
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utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "failed to create tempfile"))
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return
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}
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source = f.Name()
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if err := SaveFromBody(f, r); err != nil {
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utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "failed to write temporary file"))
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}
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}
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reference := query.Repo
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if query.Repo != "" {
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possiblyNormalizedName, err := utils.NormalizeToDockerHub(r, reference)
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if err != nil {
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utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "error normalizing image"))
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return
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}
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reference = possiblyNormalizedName
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}
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platformSpecs := strings.Split(query.Platform, "/")
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opts := entities.ImageImportOptions{
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Source: source,
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Changes: query.Changes,
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Message: query.Message,
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Reference: reference,
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OS: platformSpecs[0],
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}
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if len(platformSpecs) > 1 {
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opts.Architecture = platformSpecs[1]
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}
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imageEngine := abi.ImageEngine{Libpod: runtime}
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report, err := imageEngine.Import(r.Context(), opts)
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if err != nil {
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utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "unable to import tarball"))
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return
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}
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// Success
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utils.WriteResponse(w, http.StatusOK, struct {
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Status string `json:"status"`
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Progress string `json:"progress"`
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ProgressDetail map[string]string `json:"progressDetail"`
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Id string `json:"id"` // nolint
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}{
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Status: report.Id,
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ProgressDetail: map[string]string{},
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Id: report.Id,
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})
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}
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type pullResult struct {
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images []*libimage.Image
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err error
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}
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func CreateImageFromImage(w http.ResponseWriter, r *http.Request) {
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// 200 no error
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// 404 repo does not exist or no read access
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// 500 internal
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decoder := r.Context().Value(api.DecoderKey).(*schema.Decoder)
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runtime := r.Context().Value(api.RuntimeKey).(*libpod.Runtime)
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query := struct {
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FromImage string `schema:"fromImage"`
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Tag string `schema:"tag"`
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Platform string `schema:"platform"`
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}{
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// This is where you can override the golang default value for one of fields
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}
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if err := decoder.Decode(&query, r.URL.Query()); err != nil {
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utils.Error(w, "Something went wrong.", http.StatusBadRequest, errors.Wrapf(err, "failed to parse parameters for %s", r.URL.String()))
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return
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}
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possiblyNormalizedName, err := utils.NormalizeToDockerHub(r, mergeNameAndTagOrDigest(query.FromImage, query.Tag))
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if err != nil {
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utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "error normalizing image"))
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return
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}
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authConf, authfile, err := auth.GetCredentials(r)
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if err != nil {
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utils.Error(w, "failed to retrieve repository credentials", http.StatusBadRequest, err)
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return
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}
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defer auth.RemoveAuthfile(authfile)
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pullOptions := &libimage.PullOptions{}
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pullOptions.AuthFilePath = authfile
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if authConf != nil {
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pullOptions.Username = authConf.Username
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pullOptions.Password = authConf.Password
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pullOptions.IdentityToken = authConf.IdentityToken
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}
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pullOptions.Writer = os.Stderr // allows for debugging on the server
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// Handle the platform.
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platformSpecs := strings.Split(query.Platform, "/")
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pullOptions.OS = platformSpecs[0] // may be empty
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if len(platformSpecs) > 1 {
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pullOptions.Architecture = platformSpecs[1]
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if len(platformSpecs) > 2 {
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pullOptions.Variant = platformSpecs[2]
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}
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}
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progress := make(chan types.ProgressProperties)
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pullOptions.Progress = progress
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pullResChan := make(chan pullResult)
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go func() {
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pulledImages, err := runtime.LibimageRuntime().Pull(r.Context(), possiblyNormalizedName, config.PullPolicyAlways, pullOptions)
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pullResChan <- pullResult{images: pulledImages, err: err}
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}()
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flush := func() {
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if flusher, ok := w.(http.Flusher); ok {
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flusher.Flush()
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}
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}
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w.WriteHeader(http.StatusOK)
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w.Header().Set("Content-Type", "application/json")
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flush()
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enc := json.NewEncoder(w)
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enc.SetEscapeHTML(true)
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loop: // break out of for/select infinite loop
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for {
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var report struct {
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Stream string `json:"stream,omitempty"`
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Status string `json:"status,omitempty"`
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Progress struct {
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Current uint64 `json:"current,omitempty"`
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Total int64 `json:"total,omitempty"`
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} `json:"progressDetail,omitempty"`
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Error string `json:"error,omitempty"`
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Id string `json:"id,omitempty"` // nolint
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}
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select {
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case e := <-progress:
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switch e.Event {
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case types.ProgressEventNewArtifact:
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report.Status = "Pulling fs layer"
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case types.ProgressEventRead:
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report.Status = "Downloading"
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report.Progress.Current = e.Offset
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report.Progress.Total = e.Artifact.Size
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case types.ProgressEventSkipped:
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report.Status = "Already exists"
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case types.ProgressEventDone:
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report.Status = "Download complete"
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}
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report.Id = e.Artifact.Digest.Encoded()[0:12]
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if err := enc.Encode(report); err != nil {
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logrus.Warnf("Failed to json encode error %q", err.Error())
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}
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flush()
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case pullRes := <-pullResChan:
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err := pullRes.err
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pulledImages := pullRes.images
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if err != nil {
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report.Error = err.Error()
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} else {
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if len(pulledImages) > 0 {
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img := pulledImages[0].ID()
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if utils.IsLibpodRequest(r) {
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report.Status = "Pull complete"
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} else {
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report.Status = "Download complete"
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}
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report.Id = img[0:12]
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} else {
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report.Error = "internal error: no images pulled"
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}
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}
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if err := enc.Encode(report); err != nil {
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logrus.Warnf("Failed to json encode error %q", err.Error())
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}
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flush()
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break loop // break out of for/select infinite loop
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}
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}
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}
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func GetImage(w http.ResponseWriter, r *http.Request) {
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// 200 no error
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// 404 no such
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// 500 internal
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name := utils.GetName(r)
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possiblyNormalizedName, err := utils.NormalizeToDockerHub(r, name)
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if err != nil {
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utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "error normalizing image"))
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return
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}
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newImage, err := utils.GetImage(r, possiblyNormalizedName)
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if err != nil {
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// Here we need to fiddle with the error message because docker-py is looking for "No
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// such image" to determine on how to raise the correct exception.
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errMsg := strings.ReplaceAll(err.Error(), "image not known", "No such image")
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utils.Error(w, "Something went wrong.", http.StatusNotFound, errors.Errorf("failed to find image %s: %s", name, errMsg))
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return
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}
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inspect, err := handlers.ImageDataToImageInspect(r.Context(), newImage)
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if err != nil {
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utils.Error(w, "Server error", http.StatusInternalServerError, errors.Wrapf(err, "failed to convert ImageData to ImageInspect '%s'", inspect.ID))
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return
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}
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utils.WriteResponse(w, http.StatusOK, inspect)
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}
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func GetImages(w http.ResponseWriter, r *http.Request) {
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images, err := utils.GetImages(w, r)
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if err != nil {
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utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "Failed get images"))
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return
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}
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summaries := make([]*entities.ImageSummary, 0, len(images))
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for _, img := range images {
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// If the image is a manifest list, extract as much as we can.
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if isML, _ := img.IsManifestList(r.Context()); isML {
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continue
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}
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is, err := handlers.ImageToImageSummary(img)
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if err != nil {
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utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "Failed transform image summaries"))
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return
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}
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summaries = append(summaries, is)
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}
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utils.WriteResponse(w, http.StatusOK, summaries)
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}
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func LoadImages(w http.ResponseWriter, r *http.Request) {
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// TODO this is basically wrong
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// TODO ... improve these ^ messages to something useful
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decoder := r.Context().Value(api.DecoderKey).(*schema.Decoder)
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runtime := r.Context().Value(api.RuntimeKey).(*libpod.Runtime)
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query := struct {
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Changes map[string]string `json:"changes"` // Ignored
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Message string `json:"message"` // Ignored
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Quiet bool `json:"quiet"` // Ignored
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}{
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// This is where you can override the golang default value for one of fields
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}
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if err := decoder.Decode(&query, r.URL.Query()); err != nil {
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utils.Error(w, "Something went wrong.", http.StatusBadRequest, errors.Wrapf(err, "failed to parse parameters for %s", r.URL.String()))
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return
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}
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// First write the body to a temporary file that we can later attempt
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// to load.
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f, err := ioutil.TempFile("", "api_load.tar")
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if err != nil {
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utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "failed to create tempfile"))
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return
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}
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defer func() {
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err := os.Remove(f.Name())
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if err != nil {
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logrus.Errorf("Failed to remove temporary file: %v.", err)
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}
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}()
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if err := SaveFromBody(f, r); err != nil {
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utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "failed to write temporary file"))
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return
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}
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imageEngine := abi.ImageEngine{Libpod: runtime}
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loadOptions := entities.ImageLoadOptions{Input: f.Name()}
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loadReport, err := imageEngine.Load(r.Context(), loadOptions)
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if err != nil {
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utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "failed to load image"))
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return
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}
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if len(loadReport.Names) != 1 {
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utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Errorf("%d instead of 1 were loaded", len(loadReport.Names)))
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return
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}
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utils.WriteResponse(w, http.StatusOK, struct {
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Stream string `json:"stream"`
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}{
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Stream: fmt.Sprintf("Loaded image: %s\n", loadReport.Names[0]),
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})
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}
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func ExportImages(w http.ResponseWriter, r *http.Request) {
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// 200 OK
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// 500 Error
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decoder := r.Context().Value(api.DecoderKey).(*schema.Decoder)
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runtime := r.Context().Value(api.RuntimeKey).(*libpod.Runtime)
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||
query := struct {
|
||
Names []string `schema:"names"`
|
||
}{
|
||
// This is where you can override the golang default value for one of fields
|
||
}
|
||
if err := decoder.Decode(&query, r.URL.Query()); err != nil {
|
||
utils.Error(w, "Something went wrong.", http.StatusBadRequest, errors.Wrapf(err, "failed to parse parameters for %s", r.URL.String()))
|
||
return
|
||
}
|
||
if len(query.Names) <= 0 {
|
||
utils.Error(w, "Something went wrong.", http.StatusBadRequest, fmt.Errorf("no images to download"))
|
||
return
|
||
}
|
||
|
||
images := make([]string, len(query.Names))
|
||
for i, img := range query.Names {
|
||
possiblyNormalizedName, err := utils.NormalizeToDockerHub(r, img)
|
||
if err != nil {
|
||
utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "error normalizing image"))
|
||
return
|
||
}
|
||
images[i] = possiblyNormalizedName
|
||
}
|
||
|
||
tmpfile, err := ioutil.TempFile("", "api.tar")
|
||
if err != nil {
|
||
utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "unable to create tempfile"))
|
||
return
|
||
}
|
||
defer os.Remove(tmpfile.Name())
|
||
if err := tmpfile.Close(); err != nil {
|
||
utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "unable to close tempfile"))
|
||
return
|
||
}
|
||
|
||
imageEngine := abi.ImageEngine{Libpod: runtime}
|
||
|
||
saveOptions := entities.ImageSaveOptions{Format: "docker-archive", Output: tmpfile.Name(), MultiImageArchive: true}
|
||
if err := imageEngine.Save(r.Context(), images[0], images[1:], saveOptions); err != nil {
|
||
utils.InternalServerError(w, err)
|
||
return
|
||
}
|
||
|
||
rdr, err := os.Open(tmpfile.Name())
|
||
if err != nil {
|
||
utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "failed to read the exported tarfile"))
|
||
return
|
||
}
|
||
defer rdr.Close()
|
||
utils.WriteResponse(w, http.StatusOK, rdr)
|
||
}
|