Migrate Sirupsen to sirupsen.

vendor/github.com/docker/cli/opts/hosts.go

@@ -0,0 +1,165 @@
+package opts
+
+import (
+	"fmt"
+	"net"
+	"net/url"
+	"strconv"
+	"strings"
+)
+
+var (
+	// DefaultHTTPPort Default HTTP Port used if only the protocol is provided to -H flag e.g. dockerd -H tcp://
+	// These are the IANA registered port numbers for use with Docker
+	// see http://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=docker
+	DefaultHTTPPort = 2375 // Default HTTP Port
+	// DefaultTLSHTTPPort Default HTTP Port used when TLS enabled
+	DefaultTLSHTTPPort = 2376 // Default TLS encrypted HTTP Port
+	// DefaultUnixSocket Path for the unix socket.
+	// Docker daemon by default always listens on the default unix socket
+	DefaultUnixSocket = "/var/run/docker.sock"
+	// DefaultTCPHost constant defines the default host string used by docker on Windows
+	DefaultTCPHost = fmt.Sprintf("tcp://%s:%d", DefaultHTTPHost, DefaultHTTPPort)
+	// DefaultTLSHost constant defines the default host string used by docker for TLS sockets
+	DefaultTLSHost = fmt.Sprintf("tcp://%s:%d", DefaultHTTPHost, DefaultTLSHTTPPort)
+	// DefaultNamedPipe defines the default named pipe used by docker on Windows
+	DefaultNamedPipe = `//./pipe/docker_engine`
+)
+
+// ValidateHost validates that the specified string is a valid host and returns it.
+func ValidateHost(val string) (string, error) {
+	host := strings.TrimSpace(val)
+	// The empty string means default and is not handled by parseDockerDaemonHost
+	if host != "" {
+		_, err := parseDockerDaemonHost(host)
+		if err != nil {
+			return val, err
+		}
+	}
+	// Note: unlike most flag validators, we don't return the mutated value here
+	//       we need to know what the user entered later (using ParseHost) to adjust for TLS
+	return val, nil
+}
+
+// ParseHost and set defaults for a Daemon host string
+func ParseHost(defaultToTLS bool, val string) (string, error) {
+	host := strings.TrimSpace(val)
+	if host == "" {
+		if defaultToTLS {
+			host = DefaultTLSHost
+		} else {
+			host = DefaultHost
+		}
+	} else {
+		var err error
+		host, err = parseDockerDaemonHost(host)
+		if err != nil {
+			return val, err
+		}
+	}
+	return host, nil
+}
+
+// parseDockerDaemonHost parses the specified address and returns an address that will be used as the host.
+// Depending of the address specified, this may return one of the global Default* strings defined in hosts.go.
+func parseDockerDaemonHost(addr string) (string, error) {
+	addrParts := strings.SplitN(addr, "://", 2)
+	if len(addrParts) == 1 && addrParts[0] != "" {
+		addrParts = []string{"tcp", addrParts[0]}
+	}
+
+	switch addrParts[0] {
+	case "tcp":
+		return ParseTCPAddr(addrParts[1], DefaultTCPHost)
+	case "unix":
+		return parseSimpleProtoAddr("unix", addrParts[1], DefaultUnixSocket)
+	case "npipe":
+		return parseSimpleProtoAddr("npipe", addrParts[1], DefaultNamedPipe)
+	case "fd":
+		return addr, nil
+	default:
+		return "", fmt.Errorf("Invalid bind address format: %s", addr)
+	}
+}
+
+// parseSimpleProtoAddr parses and validates that the specified address is a valid
+// socket address for simple protocols like unix and npipe. It returns a formatted
+// socket address, either using the address parsed from addr, or the contents of
+// defaultAddr if addr is a blank string.
+func parseSimpleProtoAddr(proto, addr, defaultAddr string) (string, error) {
+	addr = strings.TrimPrefix(addr, proto+"://")
+	if strings.Contains(addr, "://") {
+		return "", fmt.Errorf("Invalid proto, expected %s: %s", proto, addr)
+	}
+	if addr == "" {
+		addr = defaultAddr
+	}
+	return fmt.Sprintf("%s://%s", proto, addr), nil
+}
+
+// ParseTCPAddr parses and validates that the specified address is a valid TCP
+// address. It returns a formatted TCP address, either using the address parsed
+// from tryAddr, or the contents of defaultAddr if tryAddr is a blank string.
+// tryAddr is expected to have already been Trim()'d
+// defaultAddr must be in the full `tcp://host:port` form
+func ParseTCPAddr(tryAddr string, defaultAddr string) (string, error) {
+	if tryAddr == "" || tryAddr == "tcp://" {
+		return defaultAddr, nil
+	}
+	addr := strings.TrimPrefix(tryAddr, "tcp://")
+	if strings.Contains(addr, "://") || addr == "" {
+		return "", fmt.Errorf("Invalid proto, expected tcp: %s", tryAddr)
+	}
+
+	defaultAddr = strings.TrimPrefix(defaultAddr, "tcp://")
+	defaultHost, defaultPort, err := net.SplitHostPort(defaultAddr)
+	if err != nil {
+		return "", err
+	}
+	// url.Parse fails for trailing colon on IPv6 brackets on Go 1.5, but
+	// not 1.4. See https://github.com/golang/go/issues/12200 and
+	// https://github.com/golang/go/issues/6530.
+	if strings.HasSuffix(addr, "]:") {
+		addr += defaultPort
+	}
+
+	u, err := url.Parse("tcp://" + addr)
+	if err != nil {
+		return "", err
+	}
+	host, port, err := net.SplitHostPort(u.Host)
+	if err != nil {
+		// try port addition once
+		host, port, err = net.SplitHostPort(net.JoinHostPort(u.Host, defaultPort))
+	}
+	if err != nil {
+		return "", fmt.Errorf("Invalid bind address format: %s", tryAddr)
+	}
+
+	if host == "" {
+		host = defaultHost
+	}
+	if port == "" {
+		port = defaultPort
+	}
+	p, err := strconv.Atoi(port)
+	if err != nil && p == 0 {
+		return "", fmt.Errorf("Invalid bind address format: %s", tryAddr)
+	}
+
+	return fmt.Sprintf("tcp://%s%s", net.JoinHostPort(host, port), u.Path), nil
+}
+
+// ValidateExtraHost validates that the specified string is a valid extrahost and returns it.
+// ExtraHost is in the form of name:ip where the ip has to be a valid ip (IPv4 or IPv6).
+func ValidateExtraHost(val string) (string, error) {
+	// allow for IPv6 addresses in extra hosts by only splitting on first ":"
+	arr := strings.SplitN(val, ":", 2)
+	if len(arr) != 2 || len(arr[0]) == 0 {
+		return "", fmt.Errorf("bad format for add-host: %q", val)
+	}
+	if _, err := ValidateIPAddress(arr[1]); err != nil {
+		return "", fmt.Errorf("invalid IP address in add-host: %q", arr[1])
+	}
+	return val, nil
+}