Mark `AllowNativePassword` in DSN param string be true by default. (#644)

AUTHORS

@@ -56,6 +56,7 @@ Paul Bonser <misterpib at gmail.com>
 Peter Schultz <peter.schultz at classmarkets.com>
 Rebecca Chin <rchin at pivotal.io>
 Runrioter Wung <runrioter at gmail.com>
+Shuode Li <elemount at qq.com>
 Soroush Pour <me at soroushjp.com>
 Stan Putrya <root.vagner at gmail.com>
 Stanley Gunawan <gunawan.stanley at gmail.com>

README.md

@@ -138,9 +138,9 @@ Default:        false
 ```
 Type:           bool
 Valid Values:   true, false
-Default:        false
+Default:        true
 ```
-`allowNativePasswords=true` allows the usage of the mysql native password method.
+`allowNativePasswords=false` disallows the usage of MySQL native password method.
 
 ##### `allowOldPasswords`
 

dsn.go

@@ -104,12 +104,12 @@ func (cfg *Config) FormatDSN() string {
 		}
 	}
 
-	if cfg.AllowNativePasswords {
+	if !cfg.AllowNativePasswords {
 		if hasParam {
-			buf.WriteString("&allowNativePasswords=true")
+			buf.WriteString("&allowNativePasswords=false")
 		} else {
 			hasParam = true
-			buf.WriteString("?allowNativePasswords=true")
+			buf.WriteString("?allowNativePasswords=false")
 		}
 	}
 
@@ -284,8 +284,9 @@ func (cfg *Config) FormatDSN() string {
 func ParseDSN(dsn string) (cfg *Config, err error) {
 	// New config with some default values
 	cfg = &Config{
-		Loc:       time.UTC,
-		Collation: defaultCollation,
+		Loc:                  time.UTC,
+		Collation:            defaultCollation,
+		AllowNativePasswords: true,
 	}
 
 	// [user[:password]@][net[(addr)]]/dbname[?param1=value1&paramN=valueN]

dsn_test.go

@@ -22,46 +22,49 @@ var testDSNs = []struct {
 	out *Config
 }{{
 	"username:password@protocol(address)/dbname?param=value",
-	&Config{User: "username", Passwd: "password", Net: "protocol", Addr: "address", DBName: "dbname", Params: map[string]string{"param": "value"}, Collation: "utf8_general_ci", Loc: time.UTC},
+	&Config{User: "username", Passwd: "password", Net: "protocol", Addr: "address", DBName: "dbname", Params: map[string]string{"param": "value"}, Collation: "utf8_general_ci", Loc: time.UTC, AllowNativePasswords: true},
 }, {
 	"username:password@protocol(address)/dbname?param=value&columnsWithAlias=true",
-	&Config{User: "username", Passwd: "password", Net: "protocol", Addr: "address", DBName: "dbname", Params: map[string]string{"param": "value"}, Collation: "utf8_general_ci", Loc: time.UTC, ColumnsWithAlias: true},
+	&Config{User: "username", Passwd: "password", Net: "protocol", Addr: "address", DBName: "dbname", Params: map[string]string{"param": "value"}, Collation: "utf8_general_ci", Loc: time.UTC, AllowNativePasswords: true, ColumnsWithAlias: true},
 }, {
 	"username:password@protocol(address)/dbname?param=value&columnsWithAlias=true&multiStatements=true",
-	&Config{User: "username", Passwd: "password", Net: "protocol", Addr: "address", DBName: "dbname", Params: map[string]string{"param": "value"}, Collation: "utf8_general_ci", Loc: time.UTC, ColumnsWithAlias: true, MultiStatements: true},
+	&Config{User: "username", Passwd: "password", Net: "protocol", Addr: "address", DBName: "dbname", Params: map[string]string{"param": "value"}, Collation: "utf8_general_ci", Loc: time.UTC, AllowNativePasswords: true, ColumnsWithAlias: true, MultiStatements: true},
 }, {
 	"user@unix(/path/to/socket)/dbname?charset=utf8",
-	&Config{User: "user", Net: "unix", Addr: "/path/to/socket", DBName: "dbname", Params: map[string]string{"charset": "utf8"}, Collation: "utf8_general_ci", Loc: time.UTC},
+	&Config{User: "user", Net: "unix", Addr: "/path/to/socket", DBName: "dbname", Params: map[string]string{"charset": "utf8"}, Collation: "utf8_general_ci", Loc: time.UTC, AllowNativePasswords: true},
 }, {
 	"user:password@tcp(localhost:5555)/dbname?charset=utf8&tls=true",
-	&Config{User: "user", Passwd: "password", Net: "tcp", Addr: "localhost:5555", DBName: "dbname", Params: map[string]string{"charset": "utf8"}, Collation: "utf8_general_ci", Loc: time.UTC, TLSConfig: "true"},
+	&Config{User: "user", Passwd: "password", Net: "tcp", Addr: "localhost:5555", DBName: "dbname", Params: map[string]string{"charset": "utf8"}, Collation: "utf8_general_ci", Loc: time.UTC, AllowNativePasswords: true, TLSConfig: "true"},
 }, {
 	"user:password@tcp(localhost:5555)/dbname?charset=utf8mb4,utf8&tls=skip-verify",
-	&Config{User: "user", Passwd: "password", Net: "tcp", Addr: "localhost:5555", DBName: "dbname", Params: map[string]string{"charset": "utf8mb4,utf8"}, Collation: "utf8_general_ci", Loc: time.UTC, TLSConfig: "skip-verify"},
+	&Config{User: "user", Passwd: "password", Net: "tcp", Addr: "localhost:5555", DBName: "dbname", Params: map[string]string{"charset": "utf8mb4,utf8"}, Collation: "utf8_general_ci", Loc: time.UTC, AllowNativePasswords: true, TLSConfig: "skip-verify"},
 }, {
 	"user:password@/dbname?loc=UTC&timeout=30s&readTimeout=1s&writeTimeout=1s&allowAllFiles=1&clientFoundRows=true&allowOldPasswords=TRUE&collation=utf8mb4_unicode_ci&maxAllowedPacket=16777216",
-	&Config{User: "user", Passwd: "password", Net: "tcp", Addr: "127.0.0.1:3306", DBName: "dbname", Collation: "utf8mb4_unicode_ci", Loc: time.UTC, Timeout: 30 * time.Second, ReadTimeout: time.Second, WriteTimeout: time.Second, AllowAllFiles: true, AllowOldPasswords: true, ClientFoundRows: true, MaxAllowedPacket: 16777216},
+	&Config{User: "user", Passwd: "password", Net: "tcp", Addr: "127.0.0.1:3306", DBName: "dbname", Collation: "utf8mb4_unicode_ci", Loc: time.UTC, AllowNativePasswords: true, Timeout: 30 * time.Second, ReadTimeout: time.Second, WriteTimeout: time.Second, AllowAllFiles: true, AllowOldPasswords: true, ClientFoundRows: true, MaxAllowedPacket: 16777216},
+}, {
+	"user:password@/dbname?allowNativePasswords=false",
+	&Config{User: "user", Passwd: "password", Net: "tcp", Addr: "127.0.0.1:3306", DBName: "dbname", Collation: "utf8_general_ci", Loc: time.UTC, AllowNativePasswords: false},
 }, {
 	"user:p@ss(word)@tcp([de:ad:be:ef::ca:fe]:80)/dbname?loc=Local",
-	&Config{User: "user", Passwd: "p@ss(word)", Net: "tcp", Addr: "[de:ad:be:ef::ca:fe]:80", DBName: "dbname", Collation: "utf8_general_ci", Loc: time.Local},
+	&Config{User: "user", Passwd: "p@ss(word)", Net: "tcp", Addr: "[de:ad:be:ef::ca:fe]:80", DBName: "dbname", Collation: "utf8_general_ci", Loc: time.Local, AllowNativePasswords: true},
 }, {
 	"/dbname",
-	&Config{Net: "tcp", Addr: "127.0.0.1:3306", DBName: "dbname", Collation: "utf8_general_ci", Loc: time.UTC},
+	&Config{Net: "tcp", Addr: "127.0.0.1:3306", DBName: "dbname", Collation: "utf8_general_ci", Loc: time.UTC, AllowNativePasswords: true},
 }, {
 	"@/",
-	&Config{Net: "tcp", Addr: "127.0.0.1:3306", Collation: "utf8_general_ci", Loc: time.UTC},
+	&Config{Net: "tcp", Addr: "127.0.0.1:3306", Collation: "utf8_general_ci", Loc: time.UTC, AllowNativePasswords: true},
 }, {
 	"/",
-	&Config{Net: "tcp", Addr: "127.0.0.1:3306", Collation: "utf8_general_ci", Loc: time.UTC},
+	&Config{Net: "tcp", Addr: "127.0.0.1:3306", Collation: "utf8_general_ci", Loc: time.UTC, AllowNativePasswords: true},
 }, {
 	"",
-	&Config{Net: "tcp", Addr: "127.0.0.1:3306", Collation: "utf8_general_ci", Loc: time.UTC},
+	&Config{Net: "tcp", Addr: "127.0.0.1:3306", Collation: "utf8_general_ci", Loc: time.UTC, AllowNativePasswords: true},
 }, {
 	"user:p@/ssword@/",
-	&Config{User: "user", Passwd: "p@/ssword", Net: "tcp", Addr: "127.0.0.1:3306", Collation: "utf8_general_ci", Loc: time.UTC},
+	&Config{User: "user", Passwd: "p@/ssword", Net: "tcp", Addr: "127.0.0.1:3306", Collation: "utf8_general_ci", Loc: time.UTC, AllowNativePasswords: true},
 }, {
 	"unix/?arg=%2Fsome%2Fpath.ext",
-	&Config{Net: "unix", Addr: "/tmp/mysql.sock", Params: map[string]string{"arg": "/some/path.ext"}, Collation: "utf8_general_ci", Loc: time.UTC},
+	&Config{Net: "unix", Addr: "/tmp/mysql.sock", Params: map[string]string{"arg": "/some/path.ext"}, Collation: "utf8_general_ci", Loc: time.UTC, AllowNativePasswords: true},
 }}
 
 func TestDSNParser(t *testing.T) {
@@ -223,8 +226,9 @@ func TestDSNUnsafeCollation(t *testing.T) {
 func TestParamsAreSorted(t *testing.T) {
 	expected := "/dbname?interpolateParams=true&foobar=baz&quux=loo"
 	dsn := &Config{
-		DBName:            "dbname",
-		InterpolateParams: true,
+		DBName:               "dbname",
+		InterpolateParams:    true,
+		AllowNativePasswords: true,
 		Params: map[string]string{
 			"quux":   "loo",
 			"foobar": "baz",