mirror of
https://github.com/kopia/kopia.git
synced 2026-03-17 05:38:34 -04:00
fcd507a56d
* cli: fixed remaining testability indirections for output and logging * cli: added cli.RunSubcommand() which is used in testing to execute a subcommand in the same process * tests: refactored most e2e tests to invoke kopia subcommands in-process * Makefile: enable code coverage for cli/ and internal/ * testing: pass 'testing' tag to unit tests which uses much faster (insecure) password hashing scheme * Makefile: push coverage from PRs again * tests: disable buffer management to reduce memory usage on ARM * cli: fixed misaligned atomic field on ARMHF also temporarily fixed statup-time benign race condition when setting default on the timeZone variable, which is the last global variable.
92 lines
1.9 KiB
Go
92 lines
1.9 KiB
Go
package cli
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import (
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"bytes"
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"context"
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"encoding/json"
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"io"
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"github.com/pkg/errors"
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"github.com/kopia/kopia/internal/iocopy"
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"github.com/kopia/kopia/repo"
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"github.com/kopia/kopia/repo/blob"
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)
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type commandBlobShow struct {
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blobShowDecrypt bool
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blobShowIDs []string
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out textOutput
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}
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func (c *commandBlobShow) setup(svc appServices, parent commandParent) {
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cmd := parent.Command("show", "Show contents of BLOBs").Alias("cat")
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cmd.Flag("decrypt", "Decrypt blob if possible").BoolVar(&c.blobShowDecrypt)
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cmd.Arg("blobID", "Blob IDs").Required().StringsVar(&c.blobShowIDs)
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cmd.Action(svc.directRepositoryReadAction(c.run))
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c.out.setup(svc)
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}
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func (c *commandBlobShow) run(ctx context.Context, rep repo.DirectRepository) error {
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for _, blobID := range c.blobShowIDs {
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if err := c.maybeDecryptBlob(ctx, c.out.stdout(), rep, blob.ID(blobID)); err != nil {
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return errors.Wrap(err, "error presenting blob")
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}
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}
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return nil
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}
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func (c *commandBlobShow) maybeDecryptBlob(ctx context.Context, w io.Writer, rep repo.DirectRepository, blobID blob.ID) error {
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var (
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d []byte
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err error
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)
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if c.blobShowDecrypt && canDecryptBlob(blobID) {
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d, err = rep.IndexBlobReader().DecryptBlob(ctx, blobID)
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if isJSONBlob(blobID) && err == nil {
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var b bytes.Buffer
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if err = json.Indent(&b, d, "", " "); err != nil {
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return errors.Wrap(err, "invalid JSON")
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}
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d = b.Bytes()
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}
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} else {
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d, err = rep.BlobReader().GetBlob(ctx, blobID, 0, -1)
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}
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if err != nil {
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return errors.Wrapf(err, "error getting %v", blobID)
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}
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if _, err := iocopy.Copy(w, bytes.NewReader(d)); err != nil {
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return errors.Wrap(err, "error copying data")
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}
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return nil
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}
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func canDecryptBlob(b blob.ID) bool {
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switch b[0] {
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case 'n', 'm', 'l':
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return true
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default:
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return false
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}
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}
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func isJSONBlob(b blob.ID) bool {
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switch b[0] {
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case 'm', 'l':
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return true
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default:
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return false
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}
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}
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