Merge pull request #1 from containers/master

# sync

1 files changed, 56 insertions, 1 deletions

diff --git a/cmd/podman/common/util.go b/cmd/podman/common/util.go
index a3626b4e4..ce323a4ba 100644
--- a/cmd/podman/common/util.go
+++ b/cmd/podman/common/util.go
@@ -1,6 +1,7 @@
 package common
 
 import (
+	"io/ioutil"
 	"net"
 	"strconv"
 	"strings"
@@ -10,6 +11,30 @@ import (
 	"github.com/sirupsen/logrus"
 )
 
+// ReadPodIDFile reads the specified file and returns its content (i.e., first
+// line).
+func ReadPodIDFile(path string) (string, error) {
+	content, err := ioutil.ReadFile(path)
+	if err != nil {
+		return "", errors.Wrap(err, "error reading pod ID file")
+	}
+	return strings.Split(string(content), "\n")[0], nil
+}
+
+// ReadPodIDFiles reads the specified files and returns their content (i.e.,
+// first line).
+func ReadPodIDFiles(files []string) ([]string, error) {
+	ids := []string{}
+	for _, file := range files {
+		id, err := ReadPodIDFile(file)
+		if err != nil {
+			return nil, err
+		}
+		ids = append(ids, id)
+	}
+	return ids, nil
+}
+
 // createExpose parses user-provided exposed port definitions and converts them
 // into SpecGen format.
 // TODO: The SpecGen format should really handle ranges more sanely - we could
@@ -71,14 +96,44 @@ func createPortBindings(ports []string) ([]specgen.PortMapping, error) {
 			return nil, errors.Errorf("invalid port format - protocol can only be specified once")
 		}
 
-		splitPort := strings.Split(splitProto[0], ":")
+		remainder := splitProto[0]
+		haveV6 := false
+
+		// Check for an IPv6 address in brackets
+		splitV6 := strings.Split(remainder, "]")
+		switch len(splitV6) {
+		case 1:
+			// Do nothing, proceed as before
+		case 2:
+			// We potentially have an IPv6 address
+			haveV6 = true
+			if !strings.HasPrefix(splitV6[0], "[") {
+				return nil, errors.Errorf("invalid port format - IPv6 addresses must be enclosed by []")
+			}
+			if !strings.HasPrefix(splitV6[1], ":") {
+				return nil, errors.Errorf("invalid port format - IPv6 address must be followed by a colon (':')")
+			}
+			ipNoPrefix := strings.TrimPrefix(splitV6[0], "[")
+			hostIP = &ipNoPrefix
+			remainder = strings.TrimPrefix(splitV6[1], ":")
+		default:
+			return nil, errors.Errorf("invalid port format - at most one IPv6 address can be specified in a --publish")
+		}
+
+		splitPort := strings.Split(remainder, ":")
 		switch len(splitPort) {
 		case 1:
+			if haveV6 {
+				return nil, errors.Errorf("invalid port format - must provide host and destination port if specifying an IP")
+			}
 			ctrPort = splitPort[0]
 		case 2:
 			hostPort = &(splitPort[0])
 			ctrPort = splitPort[1]
 		case 3:
+			if haveV6 {
+				return nil, errors.Errorf("invalid port format - when v6 address specified, must be [ipv6]:hostPort:ctrPort")
+			}
 			hostIP = &(splitPort[0])
 			hostPort = &(splitPort[1])
 			ctrPort = splitPort[2]