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113 lines
3.3 KiB
Go
113 lines
3.3 KiB
Go
package client // import "github.com/docker/docker/client"
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import (
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"context"
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"encoding/json"
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"io"
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"net/url"
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"github.com/docker/distribution/reference"
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"github.com/docker/docker/api/types"
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"github.com/docker/docker/errdefs"
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"github.com/pkg/errors"
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)
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// PluginInstall installs a plugin
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func (cli *Client) PluginInstall(ctx context.Context, name string, options types.PluginInstallOptions) (rc io.ReadCloser, err error) {
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query := url.Values{}
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if _, err := reference.ParseNormalizedNamed(options.RemoteRef); err != nil {
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return nil, errors.Wrap(err, "invalid remote reference")
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}
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query.Set("remote", options.RemoteRef)
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privileges, err := cli.checkPluginPermissions(ctx, query, options)
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if err != nil {
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return nil, err
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}
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// set name for plugin pull, if empty should default to remote reference
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query.Set("name", name)
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resp, err := cli.tryPluginPull(ctx, query, privileges, options.RegistryAuth)
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if err != nil {
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return nil, err
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}
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name = resp.header.Get("Docker-Plugin-Name")
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pr, pw := io.Pipe()
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go func() { // todo: the client should probably be designed more around the actual api
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_, err := io.Copy(pw, resp.body)
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if err != nil {
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pw.CloseWithError(err)
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return
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}
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defer func() {
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if err != nil {
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delResp, _ := cli.delete(ctx, "/plugins/"+name, nil, nil)
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ensureReaderClosed(delResp)
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}
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}()
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if len(options.Args) > 0 {
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if err := cli.PluginSet(ctx, name, options.Args); err != nil {
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pw.CloseWithError(err)
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return
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}
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}
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if options.Disabled {
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pw.Close()
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return
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}
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enableErr := cli.PluginEnable(ctx, name, types.PluginEnableOptions{Timeout: 0})
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pw.CloseWithError(enableErr)
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}()
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return pr, nil
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}
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func (cli *Client) tryPluginPrivileges(ctx context.Context, query url.Values, registryAuth string) (serverResponse, error) {
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headers := map[string][]string{"X-Registry-Auth": {registryAuth}}
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return cli.get(ctx, "/plugins/privileges", query, headers)
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}
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func (cli *Client) tryPluginPull(ctx context.Context, query url.Values, privileges types.PluginPrivileges, registryAuth string) (serverResponse, error) {
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headers := map[string][]string{"X-Registry-Auth": {registryAuth}}
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return cli.post(ctx, "/plugins/pull", query, privileges, headers)
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}
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func (cli *Client) checkPluginPermissions(ctx context.Context, query url.Values, options types.PluginInstallOptions) (types.PluginPrivileges, error) {
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resp, err := cli.tryPluginPrivileges(ctx, query, options.RegistryAuth)
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if errdefs.IsUnauthorized(err) && options.PrivilegeFunc != nil {
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// todo: do inspect before to check existing name before checking privileges
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newAuthHeader, privilegeErr := options.PrivilegeFunc()
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if privilegeErr != nil {
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ensureReaderClosed(resp)
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return nil, privilegeErr
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}
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options.RegistryAuth = newAuthHeader
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resp, err = cli.tryPluginPrivileges(ctx, query, options.RegistryAuth)
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}
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if err != nil {
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ensureReaderClosed(resp)
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return nil, err
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}
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var privileges types.PluginPrivileges
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if err := json.NewDecoder(resp.body).Decode(&privileges); err != nil {
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ensureReaderClosed(resp)
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return nil, err
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}
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ensureReaderClosed(resp)
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if !options.AcceptAllPermissions && options.AcceptPermissionsFunc != nil && len(privileges) > 0 {
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accept, err := options.AcceptPermissionsFunc(privileges)
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if err != nil {
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return nil, err
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}
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if !accept {
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return nil, pluginPermissionDenied{options.RemoteRef}
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}
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}
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return privileges, nil
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}
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