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lxc: Check the image really exists on the remote before exporting it #13161

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merged 2 commits into from
Mar 19, 2024
Merged

lxc: Check the image really exists on the remote before exporting it #13161

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860c719
lxc: handle `GetImage` logic inside `dereferenceAlias`
gabrielmougard Mar 15, 2024
aeb045a
i18n: update .pot files
gabrielmougard Mar 18, 2024
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89 changes: 51 additions & 38 deletions lxc/image.go
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Original file line number Diff line number Diff line change
Expand Up @@ -109,17 +109,30 @@ hash or alias name (if one is set).`))
return cmd
}

func (c *cmdImage) dereferenceAlias(d lxd.ImageServer, imageType string, inName string) string {
// dereferenceAlias resolves an alias (or a fingerprint) to an image and returns the image and its etag.
func (c *cmdImage) dereferenceAlias(d lxd.ImageServer, imageType string, inName string) (image *api.Image, etag string, err error) {
if inName == "" {
inName = "default"
}

result, _, _ := d.GetImageAliasType(imageType, inName)
if result == nil {
return inName
result, _, err := d.GetImageAliasType(imageType, inName)
if err != nil {
// Maybe that inName is a fingerprint and can't be found as an alias
image, etag, errImage := d.GetImage(inName)
if errImage != nil {
return nil, "", fmt.Errorf(i18n.G("Failed fetching fingerprint %q: %w"), inName, errImage)
}

return image, etag, nil
}

// Alias could be resolved, return its image
image, etag, err = d.GetImage(result.Target)
if err != nil {
return nil, "", fmt.Errorf(i18n.G("Failed fetching fingerprint %q for alias %q: %w"), result.Target, inName, err)
}

return result.Target
return image, etag, nil
}

// Copy.
Expand Down Expand Up @@ -229,8 +242,7 @@ func (c *cmdImageCopy) Run(cmd *cobra.Command, args []string) error {
imgInfo.Public = true
} else {
// Resolve any alias and then grab the image information from the source
image := c.image.dereferenceAlias(sourceServer, imageType, name)
imgInfo, _, err = sourceServer.GetImage(image)
imgInfo, _, err = c.image.dereferenceAlias(sourceServer, imageType, name)
if err != nil {
return err
}
Expand Down Expand Up @@ -335,8 +347,12 @@ func (c *cmdImageDelete) Run(cmd *cobra.Command, args []string) error {
return fmt.Errorf(i18n.G("Image identifier missing"))
}

image := c.image.dereferenceAlias(resource.server, "", resource.name)
op, err := resource.server.DeleteImage(image)
image, _, err := c.image.dereferenceAlias(resource.server, "", resource.name)
if err != nil {
return err
}

op, err := resource.server.DeleteImage(image.Fingerprint)
if err != nil {
return err
}
Expand Down Expand Up @@ -404,9 +420,9 @@ func (c *cmdImageEdit) Run(cmd *cobra.Command, args []string) error {
}

// Resolve any aliases
image := c.image.dereferenceAlias(resource.server, "", resource.name)
if image == "" {
image = resource.name
image, etag, err := c.image.dereferenceAlias(resource.server, "", resource.name)
if err != nil {
return err
}

// If stdin isn't a terminal, read text from it
Expand All @@ -422,16 +438,10 @@ func (c *cmdImageEdit) Run(cmd *cobra.Command, args []string) error {
return err
}

return resource.server.UpdateImage(image, newdata, "")
return resource.server.UpdateImage(image.Fingerprint, newdata, "")
}

// Extract the current value
imgInfo, etag, err := resource.server.GetImage(image)
if err != nil {
return err
}

brief := imgInfo.Writable()
brief := image.Writable()
data, err := yaml.Marshal(&brief)
if err != nil {
return err
Expand All @@ -448,7 +458,7 @@ func (c *cmdImageEdit) Run(cmd *cobra.Command, args []string) error {
newdata := api.ImagePut{}
err = yaml.Unmarshal(content, &newdata)
if err == nil {
err = resource.server.UpdateImage(image, newdata, etag)
err = resource.server.UpdateImage(image.Fingerprint, newdata, etag)
}

// Respawn the editor
Expand Down Expand Up @@ -522,11 +532,14 @@ func (c *cmdImageExport) Run(cmd *cobra.Command, args []string) error {
imageType = "virtual-machine"
}

fingerprint := c.image.dereferenceAlias(remoteServer, imageType, name)
image, _, err := c.image.dereferenceAlias(remoteServer, imageType, name)
if err != nil {
return err
}

// Default target is current directory
target := "."
targetMeta := fingerprint
targetMeta := image.Fingerprint
if len(args) > 1 {
target = args[1]
if shared.IsDir(shared.HostPathFollow(args[1])) {
Expand Down Expand Up @@ -566,7 +579,7 @@ func (c *cmdImageExport) Run(cmd *cobra.Command, args []string) error {
}

// Download the image
resp, err := remoteServer.GetImageFile(fingerprint, req)
resp, err := remoteServer.GetImageFile(image.Fingerprint, req)
if err != nil {
_ = os.Remove(targetMeta)
_ = os.Remove(targetRootfs)
Expand Down Expand Up @@ -914,8 +927,7 @@ func (c *cmdImageInfo) Run(cmd *cobra.Command, args []string) error {
imageType = "virtual-machine"
}

image := c.image.dereferenceAlias(remoteServer, imageType, name)
info, _, err := remoteServer.GetImage(image)
info, _, err := c.image.dereferenceAlias(remoteServer, imageType, name)
if err != nil {
return err
}
Expand Down Expand Up @@ -1361,13 +1373,17 @@ func (c *cmdImageRefresh) Run(cmd *cobra.Command, args []string) error {
return fmt.Errorf(i18n.G("Image identifier missing"))
}

image := c.image.dereferenceAlias(resource.server, "", resource.name)
image, _, err := c.image.dereferenceAlias(resource.server, "", resource.name)
if err != nil {
return err
}

progress := cli.ProgressRenderer{
Format: i18n.G("Refreshing the image: %s"),
Quiet: c.global.flagQuiet,
}

op, err := resource.server.RefreshImage(image)
op, err := resource.server.RefreshImage(image.Fingerprint)
if err != nil {
return err
}
Expand Down Expand Up @@ -1448,13 +1464,12 @@ func (c *cmdImageShow) Run(cmd *cobra.Command, args []string) error {
imageType = "virtual-machine"
}

image := c.image.dereferenceAlias(remoteServer, imageType, name)
info, _, err := remoteServer.GetImage(image)
image, _, err := c.image.dereferenceAlias(remoteServer, imageType, name)
if err != nil {
return err
}

properties := info.Writable()
properties := image.Writable()
data, err := yaml.Marshal(&properties)
if err != nil {
return err
Expand Down Expand Up @@ -1501,13 +1516,12 @@ func (c *cmdImageGetProp) Run(cmd *cobra.Command, args []string) error {
}

// Get the corresponding property
image := c.image.dereferenceAlias(remoteServer, "", name)
info, _, err := remoteServer.GetImage(image)
image, _, err := c.image.dereferenceAlias(remoteServer, "", name)
if err != nil {
return err
}

prop, propFound := info.Properties[args[1]]
prop, propFound := image.Properties[args[1]]
if !propFound {
return fmt.Errorf(i18n.G("Property not found"))
}
Expand Down Expand Up @@ -1554,17 +1568,16 @@ func (c *cmdImageSetProp) Run(cmd *cobra.Command, args []string) error {
}

// Show properties
image := c.image.dereferenceAlias(resource.server, "", resource.name)
info, etag, err := resource.server.GetImage(image)
image, etag, err := c.image.dereferenceAlias(resource.server, "", resource.name)
if err != nil {
return err
}

properties := info.Writable()
properties := image.Writable()
properties.Properties[args[1]] = args[2]

// Update image
err = resource.server.UpdateImage(image, properties, etag)
err = resource.server.UpdateImage(image.Fingerprint, properties, etag)
if err != nil {
return err
}
Expand Down
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