mirror of
https://github.com/hashicorp/vault.git
synced 2025-08-11 00:57:00 +02:00
130 lines
3.2 KiB
Go
130 lines
3.2 KiB
Go
package mysql
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import (
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"fmt"
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"strings"
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"github.com/hashicorp/vault/helper/strutil"
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"github.com/hashicorp/vault/logical"
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"github.com/hashicorp/vault/logical/framework"
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)
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const SecretCredsType = "creds"
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func secretCreds(b *backend) *framework.Secret {
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return &framework.Secret{
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Type: SecretCredsType,
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Fields: map[string]*framework.FieldSchema{
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"username": &framework.FieldSchema{
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Type: framework.TypeString,
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Description: "Username",
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},
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"password": &framework.FieldSchema{
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Type: framework.TypeString,
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Description: "Password",
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},
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"rolename": &framework.FieldSchema{
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Type: framework.TypeString,
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Description: "Rolename",
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},
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},
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Renew: b.secretCredsRenew,
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Revoke: b.secretCredsRevoke,
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}
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}
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func (b *backend) secretCredsRenew(
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req *logical.Request, d *framework.FieldData) (*logical.Response, error) {
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// Get the lease information
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lease, err := b.Lease(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 lease == nil {
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lease = &configLease{}
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}
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f := framework.LeaseExtend(lease.Lease, lease.LeaseMax, b.System())
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return f(req, d)
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}
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func (b *backend) secretCredsRevoke(
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req *logical.Request, d *framework.FieldData) (*logical.Response, error) {
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// Get the username from the internal data
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usernameRaw, ok := req.Secret.InternalData["username"]
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if !ok {
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return nil, fmt.Errorf("secret is missing username internal data")
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}
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username, ok := usernameRaw.(string)
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// Get our connection
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db, err := b.DB(req.Storage)
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if err != nil {
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return nil, err
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}
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// Get the role name
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rolenameRaw, ok := req.Secret.InternalData["rolename"]
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if !ok {
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return nil, fmt.Errorf("secret is missing rollname internal data")
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}
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rolename, ok := rolenameRaw.(string)
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role, err := b.Role(req.Storage, rolename)
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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", rolename)), nil
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}
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// Start a transaction
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tx, err := db.Begin()
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if err != nil {
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return nil, err
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}
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defer tx.Rollback()
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// Check for an empty revokeSQL string
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// set it to a default query if the string is empty
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if role.RevokeSQL == "" {
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role.RevokeSQL = "REVOKE ALL PRIVILEGES, GRANT OPTION FROM '" + username + "'@'%'; DROP USER '" + username + "'@'%'"
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}
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for _, query := range strutil.ParseArbitraryStringSlice(role.RevokeSQL, ";") {
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query = strings.TrimSpace(query)
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if len(query) == 0 {
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continue
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}
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// convert {{name}} to username value because we can't use
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// prepared statements for REVOKE and DROP commands
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// Generates the following error
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// 1295: This command is not supported in the prepared statement protocol yet
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// Reference https://mariadb.com/kb/en/mariadb/prepare-statement/
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query = strings.Replace(query, "{{name}}", username, -1)
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// Revoke all permissions for the user. This is done before the
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// drop, because MySQL explicitly documents that open user connections
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// will not be closed. By revoking all grants, at least we ensure
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// that the open connection is useless.
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// Drop this user. This only affects the next connection, which is
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// why we do the revoke initially.
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_, err = tx.Exec(query)
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if err != nil {
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return nil, err
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}
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}
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// Commit the transaction
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if err := tx.Commit(); err != nil {
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return nil, err
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}
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return nil, nil
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}
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