feature: add extra virtual host style endpoints support

command/app.go

@@ -90,6 +90,15 @@ var app = &cli.App{
 			Name:  "credentials-file",
 			Usage: "use the specified credentials file instead of the default credentials file",
 		},
+		&cli.GenericFlag{
+			Name:  "addressing-style",
+			Usage: "use virtual host style or path style endpoint: (path, virtual)",
+			Value: &EnumValue{
+				Enum:    []string{"path", "virtual"},
+				Default: "path",
+			},
+			EnvVars: []string{"S3_ADDRESSING_STYLE"},
+		},
 	},
 	Before: func(c *cli.Context) error {
 		retryCount := c.Int("retry-count")
@@ -190,6 +199,7 @@ func NewStorageOpts(c *cli.Context) storage.Options {
 		CredentialFile:         c.String("credentials-file"),
 		LogLevel:               log.LevelFromString(c.String("log")),
 		NoSuchUploadRetryCount: c.Int("no-such-upload-retry-count"),
+		AddressingStyle:        c.String("addressing-style"),
 	}
 }
 

main.go

@@ -12,7 +12,6 @@ import (
 func main() {
 	ctx, cancel := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
 	defer cancel()
-
 	if err := command.Main(ctx, os.Args); err != nil {
 		os.Exit(1)
 	}

storage/s3.go

@@ -50,6 +50,8 @@ const (
 
 	// the key of the object metadata which is used to handle retry decision on NoSuchUpload error
 	metadataKeyRetryID = "s5cmd-upload-retry-id"
+
+	AddressingVirtualHostStyle = "virtual"
 )
 
 // Re-used AWS sessions dramatically improve performance.
@@ -1255,7 +1257,7 @@ func (sc *SessionCache) newSession(ctx context.Context, opts Options) (*session.
 
 	// use virtual-host-style if the endpoint is known to support it,
 	// otherwise use the path-style approach.
-	isVirtualHostStyle := isVirtualHostStyle(endpointURL)
+	isVirtualHostStyle := isVirtualHostStyle(endpointURL, opts.AddressingStyle)
 
 	useAccelerate := supportsTransferAcceleration(endpointURL)
 	// AWS SDK handles transfer acceleration automatically. Setting the
@@ -1422,11 +1424,18 @@ func IsGoogleEndpoint(endpoint urlpkg.URL) bool {
 	return endpoint.Hostname() == gcsEndpoint
 }
 
+func ForcedVirtualHostStyle(endpoint urlpkg.URL, addressingStyle string) bool {
+	return addressingStyle == AddressingVirtualHostStyle
+}
+
 // isVirtualHostStyle reports whether the given endpoint supports S3 virtual
 // host style bucket name resolving. If a custom S3 API compatible endpoint is
 // given, resolve the bucketname from the URL path.
-func isVirtualHostStyle(endpoint urlpkg.URL) bool {
-	return endpoint == sentinelURL || supportsTransferAcceleration(endpoint) || IsGoogleEndpoint(endpoint)
+func isVirtualHostStyle(endpoint urlpkg.URL, addressingStyle string) bool {
+	return endpoint == sentinelURL ||
+		supportsTransferAcceleration(endpoint) ||
+		IsGoogleEndpoint(endpoint) ||
+		ForcedVirtualHostStyle(endpoint, addressingStyle)
 }
 
 func errHasCode(err error, code string) bool {

storage/storage.go

@@ -71,6 +71,7 @@ func NewRemoteClient(ctx context.Context, url *url.URL, opts Options) (*S3, erro
 		LogLevel:               opts.LogLevel,
 		bucket:                 url.Bucket,
 		region:                 opts.region,
+		AddressingStyle:        opts.AddressingStyle,
 	}
 	return newS3Storage(ctx, newOpts)
 }
@@ -97,6 +98,7 @@ type Options struct {
 	CredentialFile         string
 	bucket                 string
 	region                 string
+	AddressingStyle        string
 }
 
 func (o *Options) SetRegion(region string) {