summaryrefslogtreecommitdiff
path: root/pkg/api/handlers/libpod/images.go
blob: bc227d9a14b3235c69500b6506f29ffdb38e03a5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
package libpod

import (
	"context"
	"fmt"
	"io"
	"io/ioutil"
	"net/http"
	"os"
	"strconv"
	"strings"

	"github.com/containers/buildah"
	"github.com/containers/image/v5/docker"
	"github.com/containers/image/v5/docker/reference"
	"github.com/containers/image/v5/manifest"
	"github.com/containers/image/v5/transports/alltransports"
	"github.com/containers/image/v5/types"
	"github.com/containers/libpod/libpod"
	"github.com/containers/libpod/libpod/image"
	image2 "github.com/containers/libpod/libpod/image"
	"github.com/containers/libpod/pkg/api/handlers"
	"github.com/containers/libpod/pkg/api/handlers/utils"
	"github.com/containers/libpod/pkg/domain/entities"
	"github.com/containers/libpod/pkg/util"
	"github.com/gorilla/schema"
	"github.com/pkg/errors"
)

// Commit
// author string
// "container"
// repo string
// tag string
// message
// pause bool
// changes []string

// create

func ImageExists(w http.ResponseWriter, r *http.Request) {
	runtime := r.Context().Value("runtime").(*libpod.Runtime)
	name := utils.GetName(r)

	_, err := runtime.ImageRuntime().NewFromLocal(name)
	if err != nil {
		utils.Error(w, "Something went wrong.", http.StatusNotFound, errors.Wrapf(err, "Failed to find image %s", name))
		return
	}
	utils.WriteResponse(w, http.StatusNoContent, "")
}

func ImageTree(w http.ResponseWriter, r *http.Request) {
	runtime := r.Context().Value("runtime").(*libpod.Runtime)
	name := utils.GetName(r)

	img, err := runtime.ImageRuntime().NewFromLocal(name)
	if err != nil {
		utils.Error(w, "Something went wrong.", http.StatusNotFound, errors.Wrapf(err, "Failed to find image %s", name))
		return
	}

	decoder := r.Context().Value("decoder").(*schema.Decoder)
	query := struct {
		WhatRequires bool `schema:"whatrequires"`
	}{
		WhatRequires: false,
	}
	if err := decoder.Decode(&query, r.URL.Query()); err != nil {
		utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest,
			errors.Wrapf(err, "failed to parse parameters for %s", r.URL.String()))
		return
	}

	tree, err := img.GenerateTree(query.WhatRequires)
	if err != nil {
		utils.Error(w, "Server error", http.StatusInternalServerError, errors.Wrapf(err, "failed to generate image tree for %s", name))
		return
	}

	utils.WriteResponse(w, http.StatusOK, tree)
}

func GetImage(w http.ResponseWriter, r *http.Request) {
	name := utils.GetName(r)
	newImage, err := utils.GetImage(r, name)
	if err != nil {
		utils.Error(w, "Something went wrong.", http.StatusNotFound, errors.Wrapf(err, "Failed to find image %s", name))
		return
	}
	inspect, err := newImage.Inspect(r.Context())
	if err != nil {
		utils.Error(w, "Server error", http.StatusInternalServerError, errors.Wrapf(err, "failed in inspect image %s", inspect.ID))
		return
	}
	utils.WriteResponse(w, http.StatusOK, inspect)
}

func GetImages(w http.ResponseWriter, r *http.Request) {
	images, err := utils.GetImages(w, r)
	if err != nil {
		utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "Failed get images"))
		return
	}
	var summaries = make([]*entities.ImageSummary, len(images))
	for j, img := range images {
		is, err := handlers.ImageToImageSummary(img)
		if err != nil {
			utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "Failed transform image summaries"))
			return
		}
		// libpod has additional fields that we need to populate.
		is.Created = img.Created().Unix()
		is.ReadOnly = img.IsReadOnly()
		summaries[j] = is
	}
	utils.WriteResponse(w, http.StatusOK, summaries)
}

func PruneImages(w http.ResponseWriter, r *http.Request) {
	var (
		err error
	)
	runtime := r.Context().Value("runtime").(*libpod.Runtime)
	decoder := r.Context().Value("decoder").(*schema.Decoder)
	query := struct {
		All     bool                `schema:"all"`
		Filters map[string][]string `schema:"filters"`
	}{
		// override any golang type defaults
	}

	if err := decoder.Decode(&query, r.URL.Query()); err != nil {
		utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest,
			errors.Wrapf(err, "Failed to parse parameters for %s", r.URL.String()))
		return
	}

	var libpodFilters = []string{}
	if _, found := r.URL.Query()["filters"]; found {
		dangling := query.Filters["all"]
		if len(dangling) > 0 {
			query.All, err = strconv.ParseBool(query.Filters["all"][0])
			if err != nil {
				utils.InternalServerError(w, err)
				return
			}
		}
		// dangling is special and not implemented in the libpod side of things
		delete(query.Filters, "dangling")
		for k, v := range query.Filters {
			libpodFilters = append(libpodFilters, fmt.Sprintf("%s=%s", k, v[0]))
		}
	}

	cids, err := runtime.ImageRuntime().PruneImages(r.Context(), query.All, libpodFilters)
	if err != nil {
		utils.Error(w, "Something went wrong.", http.StatusInternalServerError, err)
		return
	}
	utils.WriteResponse(w, http.StatusOK, cids)
}

func ExportImage(w http.ResponseWriter, r *http.Request) {
	runtime := r.Context().Value("runtime").(*libpod.Runtime)
	decoder := r.Context().Value("decoder").(*schema.Decoder)
	query := struct {
		Compress bool   `schema:"compress"`
		Format   string `schema:"format"`
	}{
		Format: "docker-archive",
	}

	if err := decoder.Decode(&query, r.URL.Query()); err != nil {
		utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest,
			errors.Wrapf(err, "Failed to parse parameters for %s", r.URL.String()))
		return
	}

	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
	}
	if err := tmpfile.Close(); err != nil {
		utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "unable to close tempfile"))
		return
	}
	name := utils.GetName(r)
	newImage, err := runtime.ImageRuntime().NewFromLocal(name)
	if err != nil {
		utils.ImageNotFound(w, name, err)
		return
	}

	if err := newImage.Save(r.Context(), name, query.Format, tmpfile.Name(), []string{}, false, query.Compress); err != nil {
		utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest, 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()
	defer os.Remove(tmpfile.Name())
	utils.WriteResponse(w, http.StatusOK, rdr)
}

func ImagesLoad(w http.ResponseWriter, r *http.Request) {
	runtime := r.Context().Value("runtime").(*libpod.Runtime)
	decoder := r.Context().Value("decoder").(*schema.Decoder)
	query := struct {
		Reference string `schema:"reference"`
	}{
		// Add defaults here once needed.
	}

	if err := decoder.Decode(&query, r.URL.Query()); err != nil {
		utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest,
			errors.Wrapf(err, "failed to parse parameters for %s", r.URL.String()))
		return
	}

	tmpfile, err := ioutil.TempFile("", "libpod-images-load.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())
	defer tmpfile.Close()

	if _, err := io.Copy(tmpfile, r.Body); err != nil && err != io.EOF {
		utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "unable to write archive to temporary file"))
		return
	}

	tmpfile.Close()
	loadedImage, err := runtime.LoadImage(context.Background(), query.Reference, tmpfile.Name(), os.Stderr, "")
	if err != nil {
		utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "unable to load image"))
		return
	}
	split := strings.Split(loadedImage, ",")
	newImage, err := runtime.ImageRuntime().NewFromLocal(split[0])
	if err != nil {
		utils.InternalServerError(w, err)
		return
	}
	// TODO this should go into libpod proper at some point.
	if len(query.Reference) > 0 {
		if err := newImage.TagImage(query.Reference); err != nil {
			utils.InternalServerError(w, err)
			return
		}
	}
	utils.WriteResponse(w, http.StatusOK, handlers.LibpodImagesLoadReport{ID: loadedImage})
}

func ImagesImport(w http.ResponseWriter, r *http.Request) {
	runtime := r.Context().Value("runtime").(*libpod.Runtime)
	decoder := r.Context().Value("decoder").(*schema.Decoder)
	query := struct {
		Changes   []string `schema:"changes"`
		Message   string   `schema:"message"`
		Reference string   `schema:"reference"`
		URL       string   `schema:"URL"`
	}{
		// Add defaults here once needed.
	}

	if err := decoder.Decode(&query, r.URL.Query()); err != nil {
		utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest,
			errors.Wrapf(err, "failed to parse parameters for %s", r.URL.String()))
		return
	}

	// Check if we need to load the image from a URL or from the request's body.
	source := query.URL
	if len(query.URL) == 0 {
		tmpfile, err := ioutil.TempFile("", "libpod-images-import.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())
		defer tmpfile.Close()

		if _, err := io.Copy(tmpfile, r.Body); err != nil && err != io.EOF {
			utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "unable to write archive to temporary file"))
			return
		}

		tmpfile.Close()
		source = tmpfile.Name()
	}
	importedImage, err := runtime.Import(context.Background(), source, query.Reference, query.Changes, query.Message, true)
	if err != nil {
		utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "unable to import image"))
		return
	}

	utils.WriteResponse(w, http.StatusOK, handlers.LibpodImagesImportReport{ID: importedImage})
}

// ImagesPull is the v2 libpod endpoint for pulling images.  Note that the
// mandatory `reference` must be a reference to a registry (i.e., of docker
// transport or be normalized to one).  Other transports are rejected as they
// do not make sense in a remote context.
func ImagesPull(w http.ResponseWriter, r *http.Request) {
	runtime := r.Context().Value("runtime").(*libpod.Runtime)
	decoder := r.Context().Value("decoder").(*schema.Decoder)
	query := struct {
		Reference    string `schema:"reference"`
		Credentials  string `schema:"credentials"`
		OverrideOS   string `schema:"overrideOS"`
		OverrideArch string `schema:"overrideArch"`
		TLSVerify    bool   `schema:"tlsVerify"`
		AllTags      bool   `schema:"allTags"`
	}{
		TLSVerify: true,
	}

	if err := decoder.Decode(&query, r.URL.Query()); err != nil {
		utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest,
			errors.Wrapf(err, "failed to parse parameters for %s", r.URL.String()))
		return
	}

	if len(query.Reference) == 0 {
		utils.InternalServerError(w, errors.New("reference parameter cannot be empty"))
		return
	}
	// Enforce the docker transport.  This is just a precaution as some callers
	// might be accustomed to using the "transport:reference" notation.  Using
	// another than the "docker://" transport does not really make sense for a
	// remote case. For loading tarballs, the load and import endpoints should
	// be used.
	dockerPrefix := fmt.Sprintf("%s://", docker.Transport.Name())
	imageRef, err := alltransports.ParseImageName(query.Reference)
	if err == nil && imageRef.Transport().Name() != docker.Transport.Name() {
		utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest,
			errors.Errorf("reference %q must be a docker reference", query.Reference))
		return
	} else if err != nil {
		origErr := err
		imageRef, err = alltransports.ParseImageName(fmt.Sprintf("%s%s", dockerPrefix, query.Reference))
		if err != nil {
			utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest,
				errors.Wrapf(origErr, "reference %q must be a docker reference", query.Reference))
			return
		}
	}

	// Trim the docker-transport prefix.
	rawImage := strings.TrimPrefix(query.Reference, dockerPrefix)

	// all-tags doesn't work with a tagged reference, so let's check early
	namedRef, err := reference.Parse(rawImage)
	if err != nil {
		utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest,
			errors.Wrapf(err, "error parsing reference %q", rawImage))
		return
	}
	if _, isTagged := namedRef.(reference.Tagged); isTagged && query.AllTags {
		utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest,
			errors.Errorf("reference %q must not have a tag for all-tags", rawImage))
		return
	}

	var registryCreds *types.DockerAuthConfig
	if len(query.Credentials) != 0 {
		creds, err := util.ParseRegistryCreds(query.Credentials)
		if err != nil {
			utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest,
				errors.Wrapf(err, "error parsing credentials %q", query.Credentials))
			return
		}
		registryCreds = creds
	}

	// Setup the registry options
	dockerRegistryOptions := image.DockerRegistryOptions{
		DockerRegistryCreds: registryCreds,
		OSChoice:            query.OverrideOS,
		ArchitectureChoice:  query.OverrideArch,
	}
	if query.TLSVerify {
		dockerRegistryOptions.DockerInsecureSkipTLSVerify = types.NewOptionalBool(!query.TLSVerify)
	}

	// Prepare the images we want to pull
	imagesToPull := []string{}
	res := []handlers.LibpodImagesPullReport{}
	imageName := namedRef.String()

	if !query.AllTags {
		imagesToPull = append(imagesToPull, imageName)
	} else {
		systemContext := image.GetSystemContext("", "", false)
		tags, err := docker.GetRepositoryTags(context.Background(), systemContext, imageRef)
		if err != nil {
			utils.InternalServerError(w, errors.Wrap(err, "error getting repository tags"))
			return
		}
		for _, tag := range tags {
			imagesToPull = append(imagesToPull, fmt.Sprintf("%s:%s", imageName, tag))
		}
	}

	// Finally pull the images
	for _, img := range imagesToPull {
		newImage, err := runtime.ImageRuntime().New(
			context.Background(),
			img,
			"",
			"",
			os.Stderr,
			&dockerRegistryOptions,
			image.SigningOptions{},
			nil,
			util.PullImageAlways)
		if err != nil {
			utils.InternalServerError(w, errors.Wrapf(err, "error pulling image %q", query.Reference))
			return
		}
		res = append(res, handlers.LibpodImagesPullReport{ID: newImage.ID()})
	}

	utils.WriteResponse(w, http.StatusOK, res)
}

func CommitContainer(w http.ResponseWriter, r *http.Request) {
	var (
		destImage string
		mimeType  string
	)
	decoder := r.Context().Value("decoder").(*schema.Decoder)
	runtime := r.Context().Value("runtime").(*libpod.Runtime)

	query := struct {
		Author    string   `schema:"author"`
		Changes   []string `schema:"changes"`
		Comment   string   `schema:"comment"`
		Container string   `schema:"container"`
		Format    string   `schema:"format"`
		Pause     bool     `schema:"pause"`
		Repo      string   `schema:"repo"`
		Tag       string   `schema:"tag"`
	}{
		Format: "oci",
	}

	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
	}
	rtc, err := runtime.GetConfig()
	if err != nil {
		utils.Error(w, "failed to get runtime config", http.StatusInternalServerError, errors.Wrap(err, "failed to get runtime config"))
		return
	}
	sc := image2.GetSystemContext(rtc.Engine.SignaturePolicyPath, "", false)
	tag := "latest"
	options := libpod.ContainerCommitOptions{
		Pause: true,
	}
	switch query.Format {
	case "oci":
		mimeType = buildah.OCIv1ImageManifest
		if len(query.Comment) > 0 {
			utils.InternalServerError(w, errors.New("messages are only compatible with the docker image format (-f docker)"))
			return
		}
	case "docker":
		mimeType = manifest.DockerV2Schema2MediaType
	default:
		utils.InternalServerError(w, errors.Errorf("unrecognized image format %q", query.Format))
		return
	}
	options.CommitOptions = buildah.CommitOptions{
		SignaturePolicyPath:   rtc.Engine.SignaturePolicyPath,
		ReportWriter:          os.Stderr,
		SystemContext:         sc,
		PreferredManifestType: mimeType,
	}

	if len(query.Tag) > 0 {
		tag = query.Tag
	}
	options.Message = query.Comment
	options.Author = query.Author
	options.Pause = query.Pause
	options.Changes = query.Changes
	ctr, err := runtime.LookupContainer(query.Container)
	if err != nil {
		utils.Error(w, "failed to lookup container", http.StatusNotFound, err)
		return
	}

	// I know mitr hates this ... but doing for now
	if len(query.Repo) > 1 {
		destImage = fmt.Sprintf("%s:%s", query.Repo, tag)
	}

	commitImage, err := ctr.Commit(r.Context(), destImage, options)
	if err != nil && !strings.Contains(err.Error(), "is not running") {
		utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrapf(err, "CommitFailure"))
		return
	}
	utils.WriteResponse(w, http.StatusOK, handlers.IDResponse{ID: commitImage.ID()}) // nolint
}

func UntagImage(w http.ResponseWriter, r *http.Request) {
	runtime := r.Context().Value("runtime").(*libpod.Runtime)

	name := utils.GetName(r)
	newImage, err := runtime.ImageRuntime().NewFromLocal(name)
	if err != nil {
		utils.ImageNotFound(w, name, errors.Wrapf(err, "Failed to find image %s", name))
		return
	}
	tag := "latest"
	if len(r.Form.Get("tag")) > 0 {
		tag = r.Form.Get("tag")
	}
	if len(r.Form.Get("repo")) < 1 {
		utils.Error(w, "repo tag is required", http.StatusBadRequest, errors.New("repo parameter is required to tag an image"))
		return
	}
	repo := r.Form.Get("repo")
	tagName := fmt.Sprintf("%s:%s", repo, tag)
	if err := newImage.UntagImage(tagName); err != nil {
		utils.Error(w, "failed to untag", http.StatusInternalServerError, err)
		return
	}
	utils.WriteResponse(w, http.StatusCreated, "")
}