153 lines
3.5 KiB
Go
153 lines
3.5 KiB
Go
package postgresql
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import (
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"fmt"
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"github.com/hashicorp/vault/logical"
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"github.com/hashicorp/vault/logical/framework"
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_ "github.com/lib/pq"
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)
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func pathRoles(b *backend) *framework.Path {
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return &framework.Path{
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Pattern: "roles/(?P<name>\\w+)",
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Fields: map[string]*framework.FieldSchema{
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"name": &framework.FieldSchema{
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Type: framework.TypeString,
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Description: "Name of the role.",
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},
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"sql": &framework.FieldSchema{
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Type: framework.TypeString,
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Description: "SQL string to create a user. See help for more info.",
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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.pathRoleRead,
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logical.WriteOperation: b.pathRoleCreate,
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logical.DeleteOperation: b.pathRoleDelete,
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},
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HelpSynopsis: pathRoleHelpSyn,
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HelpDescription: pathRoleHelpDesc,
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}
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}
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func (b *backend) Role(s logical.Storage, n string) (*roleEntry, error) {
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entry, err := s.Get("role/" + n)
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if err != nil {
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return nil, err
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}
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if entry == nil {
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return nil, nil
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}
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var result roleEntry
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if err := entry.DecodeJSON(&result); err != nil {
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return nil, err
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}
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return &result, nil
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}
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func (b *backend) pathRoleDelete(
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req *logical.Request, data *framework.FieldData) (*logical.Response, error) {
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err := req.Storage.Delete("role/" + data.Get("name").(string))
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if 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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func (b *backend) pathRoleRead(
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req *logical.Request, data *framework.FieldData) (*logical.Response, error) {
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role, err := b.Role(req.Storage, data.Get("name").(string))
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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 nil, nil
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}
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return &logical.Response{
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Data: map[string]interface{}{
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"sql": role.SQL,
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},
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}, nil
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}
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func (b *backend) pathRoleCreate(
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req *logical.Request, data *framework.FieldData) (*logical.Response, error) {
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name := data.Get("name").(string)
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sql := data.Get("sql").(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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// Test the query by trying to prepare it
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for _, query := range SplitSQL(sql) {
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stmt, err := db.Prepare(Query(query, map[string]string{
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"name": "foo",
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"password": "bar",
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"expiration": "",
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}))
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if err != nil {
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return logical.ErrorResponse(fmt.Sprintf(
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"Error testing query: %s", err)), nil
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}
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stmt.Close()
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}
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// Store it
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entry, err := logical.StorageEntryJSON("role/"+name, &roleEntry{
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SQL: sql,
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})
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if err != nil {
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return nil, err
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}
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if err := req.Storage.Put(entry); 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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type roleEntry struct {
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SQL string `json:"sql"`
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}
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const pathRoleHelpSyn = `
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Manage the roles that can be created with this backend.
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`
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const pathRoleHelpDesc = `
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This path lets you manage the roles that can be created with this backend.
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The "sql" parameter customizes the SQL string used to create the role.
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This can be a sequence of SQL queries. Some substitution will be done to the
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SQL string for certain keys. The names of the variables must be surrounded
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by "{{" and "}}" to be replaced.
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* "name" - The random username generated for the DB user.
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* "password" - The random password generated for the DB user.
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* "expiration" - The timestamp when this user will expire.
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Example of a decent SQL query to use:
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CREATE ROLE "{{name}}" WITH
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LOGIN
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PASSWORD '{{password}}'
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VALID UNTIL '{{expiration}}';
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GRANT ALL PRIVILEGES ON ALL TABLES IN SCHEMA public TO "{{name}}";
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Note the above user would be able to access everything. In schema dc1.
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For more complex GRANT clauses, see the PostgreSQL manuel.
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`
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