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path: root/cmd/podman/common/util.go
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-rw-r--r--cmd/podman/common/util.go32
1 files changed, 31 insertions, 1 deletions
diff --git a/cmd/podman/common/util.go b/cmd/podman/common/util.go
index a3626b4e4..0d9f3ba26 100644
--- a/cmd/podman/common/util.go
+++ b/cmd/podman/common/util.go
@@ -71,14 +71,44 @@ 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]