open-vault/builtin/logical/database/path_creds_create.go
Jeff Mitchell cffb1183a8
Database updates (#4787)
* Database updates

* Add create/update distinction for connection config
* Add create/update distinction for role config
* Add db name and revocation statements to leases to give revocation a
shot at working if the role has been deleted

Fixes #3544
Fixes #4782

* Add create/update info to docs
2018-06-19 11:24:28 -04:00

111 lines
3.1 KiB
Go

package database
import (
"context"
"fmt"
"time"
"github.com/hashicorp/vault/builtin/logical/database/dbplugin"
"github.com/hashicorp/vault/helper/strutil"
"github.com/hashicorp/vault/logical"
"github.com/hashicorp/vault/logical/framework"
)
func pathCredsCreate(b *databaseBackend) *framework.Path {
return &framework.Path{
Pattern: "creds/" + framework.GenericNameRegex("name"),
Fields: map[string]*framework.FieldSchema{
"name": &framework.FieldSchema{
Type: framework.TypeString,
Description: "Name of the role.",
},
},
Callbacks: map[logical.Operation]framework.OperationFunc{
logical.ReadOperation: b.pathCredsCreateRead(),
},
HelpSynopsis: pathCredsCreateReadHelpSyn,
HelpDescription: pathCredsCreateReadHelpDesc,
}
}
func (b *databaseBackend) pathCredsCreateRead() framework.OperationFunc {
return func(ctx context.Context, req *logical.Request, data *framework.FieldData) (*logical.Response, error) {
name := data.Get("name").(string)
// Get the role
role, err := b.Role(ctx, req.Storage, name)
if err != nil {
return nil, err
}
if role == nil {
return logical.ErrorResponse(fmt.Sprintf("unknown role: %s", name)), nil
}
dbConfig, err := b.DatabaseConfig(ctx, req.Storage, role.DBName)
if err != nil {
return nil, err
}
// If role name isn't in the database's allowed roles, send back a
// permission denied.
if !strutil.StrListContains(dbConfig.AllowedRoles, "*") && !strutil.StrListContainsGlob(dbConfig.AllowedRoles, name) {
return nil, logical.ErrPermissionDenied
}
// Get the Database object
db, err := b.GetConnection(ctx, req.Storage, role.DBName)
if err != nil {
return nil, err
}
db.RLock()
defer db.RUnlock()
ttl, _, err := framework.CalculateTTL(b.System(), 0, role.DefaultTTL, 0, role.MaxTTL, 0, time.Time{})
if err != nil {
return nil, err
}
expiration := time.Now().Add(ttl)
// Adding a small buffer since the TTL will be calculated again after this call
// to ensure the database credential does not expire before the lease
expiration = expiration.Add(5 * time.Second)
usernameConfig := dbplugin.UsernameConfig{
DisplayName: req.DisplayName,
RoleName: name,
}
// Create the user
username, password, err := db.CreateUser(ctx, role.Statements, usernameConfig, expiration)
if err != nil {
b.CloseIfShutdown(db, err)
return nil, err
}
resp := b.Secret(SecretCredsType).Response(map[string]interface{}{
"username": username,
"password": password,
}, map[string]interface{}{
"username": username,
"role": name,
"db_name": role.DBName,
"revocation_statements": role.Statements.Revocation,
})
resp.Secret.TTL = role.DefaultTTL
resp.Secret.MaxTTL = role.MaxTTL
return resp, nil
}
}
const pathCredsCreateReadHelpSyn = `
Request database credentials for a certain role.
`
const pathCredsCreateReadHelpDesc = `
This path reads database credentials for a certain role. The
database credentials will be generated on demand and will be automatically
revoked when the lease is up.
`