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database/mysql: Allow the creation statement to use commands that are… (#3619)

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* database/mysql: Allow the creation statement to use commands that are not yet supported by the prepare statement protocol

* Remove unnecessary else block
This commit is contained in:
Brian Kassouf
2017-11-28 10:19:49 -08:00
committed by GitHub
parent d3a2844a75
commit 98a644c21d
2 changed files with 39 additions and 4 deletions
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23
plugins/database/mysql/mysql.go
View File

@@ -5,7 +5,7 @@ import (
"strings"
"time"
_ "github.com/go-sql-driver/mysql"
stdmysql "github.com/go-sql-driver/mysql"
"github.com/hashicorp/vault/api"
"github.com/hashicorp/vault/builtin/logical/database/dbplugin"
"github.com/hashicorp/vault/helper/strutil"
@@ -140,13 +140,28 @@ func (m *MySQL) CreateUser(statements dbplugin.Statements, usernameConfig dbplug
if len(query) == 0 {
continue
}
stmt, err := tx.Prepare(dbutil.QueryHelper(query, map[string]string{
query = dbutil.QueryHelper(query, map[string]string{
"name": username,
"password": password,
"expiration": expirationStr,
}))
})
stmt, err := tx.Prepare(query)
if err != nil {
// If the error code we get back is Error 1295: This command is not
// supported in the prepared statement protocol yet, we will execute
// the statement without preparing it. This allows the caller to
// manually prepare statements, as well as run other not yet
// prepare supported commands. If there is no error when running we
// will continue to the next statement.
if e, ok := err.(*stdmysql.MySQLError); ok && e.Number == 1295 {
_, err = tx.Exec(query)
if err != nil {
return "", "", err
}
continue
}
return "", "", err
}
defer stmt.Close()

20
plugins/database/mysql/mysql_test.go
View File

@@ -184,6 +184,19 @@ func TestMySQL_CreateUser(t *testing.T) {
if err := testCredsExist(t, connURL, username, password); err != nil {
t.Fatalf("Could not connect with new credentials: %s", err)
}
// Test with a manualy prepare statement
statements.CreationStatements = testMySQLRolePreparedStmt
username, password, err = db.CreateUser(statements, usernameConfig, time.Now().Add(time.Minute))
if err != nil {
t.Fatalf("err: %s", err)
}
if err := testCredsExist(t, connURL, username, password); err != nil {
t.Fatalf("Could not connect with new credentials: %s", err)
}
}
func TestMySQL_CreateUser_Legacy(t *testing.T) {
@@ -316,6 +329,13 @@ func testCredsExist(t testing.TB, connURL, username, password string) error {
return db.Ping()
}
const testMySQLRolePreparedStmt = `
CREATE USER '{{name}}'@'%' IDENTIFIED BY '{{password}}';
set @grants=CONCAT("GRANT SELECT ON ", "*", ".* TO '{{name}}'@'%'");
PREPARE grantStmt from @grants;
EXECUTE grantStmt;
DEALLOCATE PREPARE grantStmt;
`
const testMySQLRoleWildCard = `
CREATE USER '{{name}}'@'%' IDENTIFIED BY '{{password}}';
GRANT SELECT ON *.* TO '{{name}}'@'%';