Rework port parsing to support --expose and -P

As part of this, make a major change to the type we use to
represent port mappings in SpecGen (from using existing OCICNI
structs to using our own custom one). This struct has the
advantage of supporting ranges, massively reducing traffic over
the wire for Podman commands using them (for example, the
`podman run -p 5000-6000` command will now send only one struct
instead of 1000). This struct also allows us to easily validate
which ports are in use, and which are not, which is necessary for
--expose.

Once we have parsed the ports from the new struct, we can produce
an accurate map including all currently requested ports, and use
that to determine what ports need to be exposed (some requested
exposed ports may already be included in a mapping from --publish
and will be ignored) and what open ports on the host we can map
them to.

Signed-off-by: Matthew Heon <matthew.heon@pm.me>

1 files changed, 4 insertions, 4 deletions

diff --git a/pkg/specgen/generate/container_create.go b/pkg/specgen/generate/container_create.go
index 14836035d..be54b60d2 100644
--- a/pkg/specgen/generate/container_create.go
+++ b/pkg/specgen/generate/container_create.go
@@ -96,7 +96,7 @@ func MakeContainer(ctx context.Context, rt *libpod.Runtime, s *specgen.SpecGener
 		return nil, err
 	}
 
-	opts, err := createContainerOptions(rt, s, pod, finalVolumes)
+	opts, err := createContainerOptions(ctx, rt, s, pod, finalVolumes, newImage)
 	if err != nil {
 		return nil, err
 	}
@@ -115,7 +115,7 @@ func MakeContainer(ctx context.Context, rt *libpod.Runtime, s *specgen.SpecGener
 	return rt.NewContainer(ctx, runtimeSpec, options...)
 }
 
-func createContainerOptions(rt *libpod.Runtime, s *specgen.SpecGenerator, pod *libpod.Pod, volumes []*specgen.NamedVolume) ([]libpod.CtrCreateOption, error) {
+func createContainerOptions(ctx context.Context, rt *libpod.Runtime, s *specgen.SpecGenerator, pod *libpod.Pod, volumes []*specgen.NamedVolume, img *image.Image) ([]libpod.CtrCreateOption, error) {
 	var options []libpod.CtrCreateOption
 	var err error
 
@@ -134,7 +134,7 @@ func createContainerOptions(rt *libpod.Runtime, s *specgen.SpecGenerator, pod *l
 		options = append(options, rt.WithPod(pod))
 	}
 	destinations := []string{}
-	//	// Take all mount and named volume destinations.
+	// Take all mount and named volume destinations.
 	for _, mount := range s.Mounts {
 		destinations = append(destinations, mount.Destination)
 	}
@@ -188,7 +188,7 @@ func createContainerOptions(rt *libpod.Runtime, s *specgen.SpecGenerator, pod *l
 	options = append(options, libpod.WithPrivileged(s.Privileged))
 
 	// Get namespace related options
-	namespaceOptions, err := GenerateNamespaceOptions(s, rt, pod)
+	namespaceOptions, err := GenerateNamespaceOptions(ctx, s, rt, pod, img)
 	if err != nil {
 		return nil, err
 	}