2015-11-18 16:25:42 +00:00
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package rabbitmq
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import (
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2018-01-08 18:31:38 +00:00
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"context"
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2015-11-18 16:25:42 +00:00
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"fmt"
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2020-03-27 21:14:59 +00:00
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"io/ioutil"
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2015-11-18 16:25:42 +00:00
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2019-04-12 21:54:35 +00:00
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"github.com/hashicorp/vault/sdk/framework"
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2021-06-22 19:50:46 +00:00
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"github.com/hashicorp/vault/sdk/helper/template"
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2019-04-13 07:44:06 +00:00
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"github.com/hashicorp/vault/sdk/logical"
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2021-10-20 16:46:37 +00:00
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rabbithole "github.com/michaelklishin/rabbit-hole/v2"
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2015-11-18 16:25:42 +00:00
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)
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2021-06-22 19:50:46 +00:00
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const (
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defaultUserNameTemplate = `{{ printf "%s-%s" (.DisplayName) (uuid) }}`
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)
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2016-06-08 07:18:26 +00:00
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func pathCreds(b *backend) *framework.Path {
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2015-11-18 16:25:42 +00:00
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return &framework.Path{
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Pattern: "creds/" + framework.GenericNameRegex("name"),
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Fields: map[string]*framework.FieldSchema{
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"name": {
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2015-11-18 16:25:42 +00:00
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Type: framework.TypeString,
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Description: "Name of the role.",
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},
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},
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Callbacks: map[logical.Operation]framework.OperationFunc{
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logical.ReadOperation: b.pathCredsRead,
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2015-11-18 16:25:42 +00:00
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},
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HelpSynopsis: pathRoleCreateReadHelpSyn,
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HelpDescription: pathRoleCreateReadHelpDesc,
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}
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}
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2016-06-08 07:18:26 +00:00
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// Issues the credential based on the role name
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2018-01-08 18:31:38 +00:00
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func (b *backend) pathCredsRead(ctx context.Context, req *logical.Request, d *framework.FieldData) (*logical.Response, error) {
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2016-06-08 07:18:26 +00:00
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name := d.Get("name").(string)
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if name == "" {
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return logical.ErrorResponse("missing name"), nil
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2016-05-21 05:51:09 +00:00
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}
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2015-11-18 16:25:42 +00:00
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// Get the role
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2018-01-19 06:44:44 +00:00
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role, err := b.Role(ctx, req.Storage, name)
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2015-11-18 16:25:42 +00:00
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if err != nil {
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return nil, err
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}
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if role == nil {
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return logical.ErrorResponse(fmt.Sprintf("unknown role: %s", name)), nil
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}
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2021-06-22 19:50:46 +00:00
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config, err := readConfig(ctx, req.Storage)
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2016-06-08 14:36:16 +00:00
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if err != nil {
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return nil, fmt.Errorf("unable to read configuration: %w", err)
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}
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2021-06-22 19:50:46 +00:00
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usernameTemplate := config.UsernameTemplate
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if usernameTemplate == "" {
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usernameTemplate = defaultUserNameTemplate
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}
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up, err := template.NewTemplate(template.Template(usernameTemplate))
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if err != nil {
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return nil, fmt.Errorf("unable to initialize username template: %w", err)
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}
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um := UsernameMetadata{
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DisplayName: req.DisplayName,
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RoleName: name,
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}
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username, err := up.Generate(um)
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if err != nil {
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return nil, fmt.Errorf("failed to generate username: %w", err)
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2020-06-11 22:08:20 +00:00
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}
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password, err := b.generatePassword(ctx, config.PasswordPolicy)
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2016-06-08 14:36:16 +00:00
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if err != nil {
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return nil, err
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}
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2016-06-08 07:18:26 +00:00
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// Get the client configuration
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2018-01-19 06:44:44 +00:00
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client, err := b.Client(ctx, req.Storage)
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if err != nil {
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return nil, err
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}
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if client == nil {
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return logical.ErrorResponse("failed to get the client"), nil
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}
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2016-06-08 07:18:26 +00:00
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// Register the generated credentials in the backend, with the RabbitMQ server
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2020-03-27 21:14:59 +00:00
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resp, err := client.PutUser(username, rabbithole.UserSettings{
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2015-11-18 16:25:42 +00:00
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Password: password,
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Tags: []string{role.Tags},
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})
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if err != nil {
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return nil, fmt.Errorf("failed to create a new user with the generated credentials")
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}
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defer func() {
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if err := resp.Body.Close(); err != nil {
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b.Logger().Error(fmt.Sprintf("unable to close response body: %s", err))
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}
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}()
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if !isIn200s(resp.StatusCode) {
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body, _ := ioutil.ReadAll(resp.Body)
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return nil, fmt.Errorf("error creating user %s - %d: %s", username, resp.StatusCode, body)
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}
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success := false
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defer func() {
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if success {
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return
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}
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// Delete the user because it's in an unknown state.
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resp, err := client.DeleteUser(username)
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if err != nil {
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b.Logger().Error(fmt.Sprintf("deleting %s due to permissions being in an unknown state, but failed: %s", username, err))
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}
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if !isIn200s(resp.StatusCode) {
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body, _ := ioutil.ReadAll(resp.Body)
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b.Logger().Error(fmt.Sprintf("deleting %s due to permissions being in an unknown state, but error deleting: %d: %s", username, resp.StatusCode, body))
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}
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}()
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2015-11-18 16:25:42 +00:00
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2016-06-08 07:18:26 +00:00
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// If the role had vhost permissions specified, assign those permissions
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// to the created username for respective vhosts.
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for vhost, permission := range role.VHosts {
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err := func() error {
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2020-03-27 21:14:59 +00:00
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resp, err := client.UpdatePermissionsIn(vhost, username, rabbithole.Permissions{
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Configure: permission.Configure,
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Write: permission.Write,
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Read: permission.Read,
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})
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if err != nil {
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return err
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}
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defer func() {
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if err := resp.Body.Close(); err != nil {
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b.Logger().Error(fmt.Sprintf("unable to close response body: %s", err))
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}
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}()
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if !isIn200s(resp.StatusCode) {
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body, _ := ioutil.ReadAll(resp.Body)
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return fmt.Errorf("error updating vhost permissions for %s - %d: %s", vhost, resp.StatusCode, body)
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2016-05-21 05:51:09 +00:00
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}
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2020-03-27 21:14:59 +00:00
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return nil
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}()
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if err != nil {
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2020-03-27 21:14:59 +00:00
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return nil, err
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2015-11-18 16:25:42 +00:00
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}
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}
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2019-10-30 21:19:49 +00:00
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// If the role had vhost topic permissions specified, assign those permissions
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// to the created username for respective vhosts and exchange.
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for vhost, permissions := range role.VHostTopics {
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for exchange, permission := range permissions {
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err := func() error {
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2021-02-18 20:40:18 +00:00
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resp, err := client.UpdateTopicPermissionsIn(vhost, username, rabbithole.TopicPermissions{
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Exchange: exchange,
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Write: permission.Write,
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Read: permission.Read,
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2020-03-27 21:14:59 +00:00
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})
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if err != nil {
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return err
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2019-10-30 21:19:49 +00:00
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}
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2020-03-27 21:14:59 +00:00
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defer func() {
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if err := resp.Body.Close(); err != nil {
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b.Logger().Error(fmt.Sprintf("unable to close response body: %s", err))
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}
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}()
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if !isIn200s(resp.StatusCode) {
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body, _ := ioutil.ReadAll(resp.Body)
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return fmt.Errorf("error updating vhost permissions for %s - %d: %s", vhost, resp.StatusCode, body)
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}
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return nil
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2022-03-30 19:03:21 +00:00
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}()
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if err != nil {
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2020-03-27 21:14:59 +00:00
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return nil, err
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2019-10-30 21:19:49 +00:00
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}
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}
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}
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2020-03-27 21:14:59 +00:00
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success = true
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2019-10-30 21:19:49 +00:00
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2015-11-18 16:25:42 +00:00
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// Return the secret
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2020-03-27 21:14:59 +00:00
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response := b.Secret(SecretCredsType).Response(map[string]interface{}{
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2015-11-18 16:25:42 +00:00
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"username": username,
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"password": password,
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}, map[string]interface{}{
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"username": username,
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})
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2016-06-08 07:18:26 +00:00
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// Determine if we have a lease
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2018-01-19 06:44:44 +00:00
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lease, err := b.Lease(ctx, req.Storage)
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2016-06-08 07:18:26 +00:00
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if err != nil {
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return nil, err
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}
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2018-01-18 06:43:38 +00:00
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2016-06-08 07:18:26 +00:00
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if lease != nil {
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2020-03-27 21:14:59 +00:00
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response.Secret.TTL = lease.TTL
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response.Secret.MaxTTL = lease.MaxTTL
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2016-06-08 07:18:26 +00:00
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}
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2020-03-27 21:14:59 +00:00
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return response, nil
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}
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func isIn200s(respStatus int) bool {
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return respStatus >= 200 && respStatus < 300
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2015-11-18 16:25:42 +00:00
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}
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2021-06-22 19:50:46 +00:00
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// UsernameMetadata is metadata the database plugin can use to generate a username
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type UsernameMetadata struct {
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DisplayName string
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RoleName string
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}
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2015-11-18 16:25:42 +00:00
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const pathRoleCreateReadHelpSyn = `
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Request RabbitMQ credentials for a certain role.
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`
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const pathRoleCreateReadHelpDesc = `
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This path reads RabbitMQ credentials for a certain role. The
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RabbitMQ credentials will be generated on demand and will be automatically
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revoked when the lease is up.
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`
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