fix: add replace directive for vendoring case sensitivity

Add replace directive in go.mod to ensure consistent lowercase module path
for vendoring compatibility on case-sensitive filesystems (Linux).

This prevents issues where vendoring might create directories with inconsistent
casing (Microsoft vs microsoft) when other dependencies reference the module.

See: golang/go#38342

Also includes minor gofmt formatting fixes.

Author: dlevy-msft-sql

examples/channel_binding/tsql.go

@@ -14,23 +14,23 @@ import (
 
 	"github.com/google/uuid"
 	mssqldb "github.com/microsoft/go-mssqldb"
-	"github.com/microsoft/go-mssqldb/msdsn"
 	_ "github.com/microsoft/go-mssqldb/integratedauth/krb5"
+	"github.com/microsoft/go-mssqldb/msdsn"
 )
 
 func main() {
 	var (
-		userid   = flag.String("U", "", "login_id")
-		password = flag.String("P", "", "password")
-		server   = flag.String("S", "localhost", "server_name[\\instance_name]")
-		port     = flag.Uint64("p", 1433, "server port")
-		keyLog   = flag.String("K", "tlslog.log", "path to sslkeylog file")
-		database = flag.String("d", "", "db_name")
-		spn      = flag.String("spn", "", "SPN")
-		auth = flag.String("a", "ntlm", "Authentication method: ntlm, krb5 or winsspi")
-		epa = flag.Bool("epa", true, "EPA enabled: true, false")
-		encrypt = flag.String("e", "required", "encrypt mode: required, disabled, strict, optional")
-		query = flag.String("q", "", "query to execute")
+		userid        = flag.String("U", "", "login_id")
+		password      = flag.String("P", "", "password")
+		server        = flag.String("S", "localhost", "server_name[\\instance_name]")
+		port          = flag.Uint64("p", 1433, "server port")
+		keyLog        = flag.String("K", "tlslog.log", "path to sslkeylog file")
+		database      = flag.String("d", "", "db_name")
+		spn           = flag.String("spn", "", "SPN")
+		auth          = flag.String("a", "ntlm", "Authentication method: ntlm, krb5 or winsspi")
+		epa           = flag.Bool("epa", true, "EPA enabled: true, false")
+		encrypt       = flag.String("e", "required", "encrypt mode: required, disabled, strict, optional")
+		query         = flag.String("q", "", "query to execute")
 		tlsMinVersion = flag.String("tlsmin", "1.1", "TLS minimum version: 1.0, 1.1, 1.2, 1.3")
 		tlsMaxVersion = flag.String("tlsmax", "1.3", "TLS maximum version: 1.0, 1.1, 1.2, 1.3")
 	)
@@ -61,7 +61,7 @@ func main() {
 		Password:       *password,
 		ChangePassword: "",
 		AppName:        "go-mssqldb",
-		ServerSPN: *spn,
+		ServerSPN:      *spn,
 		TLSConfig: &tls.Config{
 			InsecureSkipVerify:          true, // adjust for your case
 			ServerName:                  *server,
@@ -70,11 +70,11 @@ func main() {
 			MinVersion:                  tlsMinVersionNum,
 			MaxVersion:                  tlsMaxVersionNum,
 		},
-		Encryption:         encryption,
+		Encryption: encryption,
 		Parameters: map[string]string{
-			"authenticator": *auth,
+			"authenticator":      *auth,
 			"krb5-credcachefile": os.Getenv("KRB5_CCNAME"),
-			"krb5-configfile": os.Getenv("KRB5_CONFIG"),
+			"krb5-configfile":    os.Getenv("KRB5_CONFIG"),
 		},
 		ProtocolParameters: map[string]interface{}{},
 		Protocols: []string{
@@ -87,7 +87,7 @@ func main() {
 		DialTimeout: time.Second * 5,
 		ConnTimeout: time.Second * 10,
 		KeepAlive:   time.Second * 30,
-		EpaEnabled: *epa,
+		EpaEnabled:  *epa,
 	}
 
 	activityid, uerr := uuid.NewRandom()
@@ -116,7 +116,7 @@ func main() {
 		fmt.Println("Cannot connect: ", err.Error())
 		return
 	}
-	
+
 	if *query != "" {
 		err = exec(db, *query)
 		if err != nil {
@@ -222,4 +222,4 @@ func parseEncrypt(encrypt string) (msdsn.Encryption, error) {
 	default:
 		return msdsn.EncryptionOff, fmt.Errorf("invalid encrypt '%s'", encrypt)
 	}
-}
+}

go.mod

@@ -37,3 +37,9 @@ require (
 	golang.org/x/net v0.47.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
+
+// Ensure canonical lowercase module path for vendoring compatibility.
+// This prevents issues on case-sensitive filesystems (Linux) where vendoring
+// might create directories with inconsistent casing.
+// See: https://github.com/golang/go/issues/38342
+replace github.com/Microsoft/go-mssqldb => ./

integratedauth/auth_test.go

@@ -14,10 +14,10 @@ type stubAuth struct {
 	user string
 }
 
-func (s *stubAuth) InitialBytes() ([]byte, error)    { return nil, nil }
-func (s *stubAuth) NextBytes([]byte) ([]byte, error) { return nil, nil }
-func (s *stubAuth) Free()                            {}
-func (s *stubAuth) SetChannelBinding(*ChannelBindings)          {}
+func (s *stubAuth) InitialBytes() ([]byte, error)      { return nil, nil }
+func (s *stubAuth) NextBytes([]byte) ([]byte, error)   { return nil, nil }
+func (s *stubAuth) Free()                              {}
+func (s *stubAuth) SetChannelBinding(*ChannelBindings) {}
 
 func getAuth(config msdsn.Config) (IntegratedAuthenticator, error) {
 	return &stubAuth{config.User}, nil

integratedauth/channel_binding.go

@@ -14,11 +14,12 @@ type AuthenticatorWithEPA interface {
 }
 
 type ChannelBindingsType uint32
+
 const (
-	ChannelBindingsTypeTLSExporter = 0
-	ChannelBindingsTypeTLSUnique   = 1
+	ChannelBindingsTypeTLSExporter       = 0
+	ChannelBindingsTypeTLSUnique         = 1
 	ChannelBindingsTypeTLSServerEndPoint = 2
-	ChannelBindingsTypeEmpty = 3
+	ChannelBindingsTypeEmpty             = 3
 )
 
 const (
@@ -34,7 +35,7 @@ const (
 // gss_channel_bindings_struct: https://docs.oracle.com/cd/E19683-01/816-1331/overview-52/index.html
 // gss_buffer_desc: https://docs.oracle.com/cd/E19683-01/816-1331/reference-21/index.html
 type ChannelBindings struct {
-	Type ChannelBindingsType
+	Type              ChannelBindingsType
 	InitiatorAddrType uint32
 	InitiatorAddress  []byte
 	AcceptorAddrType  uint32
@@ -56,7 +57,7 @@ type SEC_CHANNEL_BINDINGS struct {
 }
 
 var EmptyChannelBindings = &ChannelBindings{
-	Type: ChannelBindingsTypeEmpty,
+	Type:              ChannelBindingsTypeEmpty,
 	InitiatorAddrType: 0,
 	InitiatorAddress:  nil,
 	AcceptorAddrType:  0,
@@ -175,7 +176,7 @@ func GenerateCBTFromTLSUnique(tlsUnique []byte) (*ChannelBindings, error) {
 		return nil, fmt.Errorf("tlsUnique is empty")
 	}
 	return &ChannelBindings{
-		Type: ChannelBindingsTypeTLSUnique,
+		Type:              ChannelBindingsTypeTLSUnique,
 		InitiatorAddrType: 0,
 		InitiatorAddress:  nil,
 		AcceptorAddrType:  0,
@@ -212,7 +213,7 @@ func GenerateCBTFromTLSExporter(exporterKey []byte) (*ChannelBindings, error) {
 	}
 
 	return &ChannelBindings{
-		Type: ChannelBindingsTypeTLSExporter,
+		Type:              ChannelBindingsTypeTLSExporter,
 		InitiatorAddrType: 0,
 		InitiatorAddress:  nil,
 		AcceptorAddrType:  0,
@@ -247,7 +248,7 @@ func GenerateCBTFromServerCert(cert *x509.Certificate) *ChannelBindings {
 	_, _ = h.Write(cert.Raw)
 	certHash = h.Sum(nil)
 	return &ChannelBindings{
-		Type: ChannelBindingsTypeTLSServerEndPoint,
+		Type:              ChannelBindingsTypeTLSServerEndPoint,
 		InitiatorAddrType: 0,
 		InitiatorAddress:  nil,
 		AcceptorAddrType:  0,

integratedauth/channel_binding_test.go

@@ -35,4 +35,4 @@ func TestAsSSPI_SEC_CHANNEL_BINDINGS(t *testing.T) {
 			t.Errorf("Expected %s, but got %s for input %s", expected, hex.EncodeToString(winsspiCB), input)
 		}
 	}
-}
+}

msdsn/conn_str.go

@@ -647,7 +647,7 @@ func Parse(dsn string) (Config, error) {
 	if !ok {
 		epaString = os.Getenv("MSSQL_USE_EPA")
 	}
-	if epaString !=  "" {
+	if epaString != "" {
 		epaEnabled, err := strconv.ParseBool(epaString)
 		if err != nil {
 			return p, fmt.Errorf("invalid epa enabled value '%s': %v", epaString, err)