Merge branch 'master' into alpine

11 files changed, 67 insertions, 718 deletions

diff --git a/.goreleaser.yml b/.goreleaser.yml
index 021f746..dd55109 100644
--- a/.goreleaser.yml
+++ b/.goreleaser.yml
@@ -3,6 +3,8 @@ release:
 
 builds:
   - binary: dive
+    env:
+      - CGO_ENABLED=0
     goos:
       - windows
       - darwin
diff --git a/Dockerfile b/Dockerfile
index fe1add8..b2a865c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,10 @@
 FROM alpine:3.10
-COPY --from=wagoodman/dive:dev /usr/local/bin/docker /usr/local/bin/
+
+ARG DOCKER_CLI_VERSION=19.03.1
+RUN wget -O- https://download.docker.com/linux/static/stable/x86_64/docker-${DOCKER_CLI_VERSION}.tgz | \
+    tar -xzf - docker/docker --strip-component=1 && \
+    mv docker /usr/local/bin
+
 COPY dive /usr/local/bin/
-RUN apk add -U --no-cache gpgme device-mapper
+
 ENTRYPOINT ["/usr/local/bin/dive"]
diff --git a/Makefile b/Makefile
index 18d3786..34e6276 100644
--- a/Makefile
+++ b/Makefile
@@ -12,11 +12,15 @@ run-large: build
 	$(BUILD_PATH) amir20/clashleaders:latest
 
 run-podman: build
+	$(BUILD_PATH)  localhost/dive-example:latest  --source podman
+
+run-podman-build: build
 	podman build -t dive-example:latest -f .data/Dockerfile.example .
-	$(BUILD_PATH) localhost/dive-example:latest --engine podman
+	$(BUILD_PATH) localhost/dive-example:latest --source podman
+
 
 run-podman-large: build
-	$(BUILD_PATH) docker.io/amir20/clashleaders:latest --engine podman
+	$(BUILD_PATH) docker.io/amir20/clashleaders:latest --source podman
 
 run-ci: build
 	CI=true $(BUILD_PATH) dive-example:latest --ci-config .data/.dive-ci
diff --git a/README.md b/README.md
index 67f2345..688ac41 100644
--- a/README.md
+++ b/README.md
@@ -82,14 +82,14 @@ With valid `source` options as such:
 
 **Ubuntu/Debian**
 ```bash
-wget https://github.com/wagoodman/dive/releases/download/v0.9.0/dive_0.9.0_linux_amd64.deb
-sudo apt install ./dive_0.9.0_linux_amd64.deb
+wget https://github.com/wagoodman/dive/releases/download/v0.9.1/dive_0.9.1_linux_amd64.deb
+sudo apt install ./dive_0.9.1_linux_amd64.deb
 ```
 
 **RHEL/Centos**
 ```bash
-curl -OL https://github.com/wagoodman/dive/releases/download/v0.9.0/dive_0.9.0_linux_amd64.rpm
-rpm -i dive_0.9.0_linux_amd64.rpm
+curl -OL https://github.com/wagoodman/dive/releases/download/v0.9.1/dive_0.9.1_linux_amd64.rpm
+rpm -i dive_0.9.1_linux_amd64.rpm
 ```
 
 **Arch Linux**
@@ -108,11 +108,11 @@ The above example assumes [`yay`](https://aur.archlinux.org/packages/yay/) as th
 brew install dive
 ```
 
-or download the latest Darwin build from the [releases page](https://github.com/wagoodman/dive/releases/download/v0.9.0/dive_0.9.0_darwin_amd64.tar.gz).
+or download the latest Darwin build from the [releases page](https://github.com/wagoodman/dive/releases/download/v0.9.1/dive_0.9.1_darwin_amd64.tar.gz).
 
 **Windows**
 
-Download the [latest release](https://github.com/wagoodman/dive/releases/download/v0.9.0/dive_0.9.0_windows_amd64.zip).
+Download the [latest release](https://github.com/wagoodman/dive/releases/download/v0.9.1/dive_0.9.1_windows_amd64.zip).
 
 **Go tools**
 Requires Go version 1.9 or higher.
diff --git a/dive/image/podman/cli.go b/dive/image/podman/cli.go
index 1c4b8e8..83523af 100644
--- a/dive/image/podman/cli.go
+++ b/dive/image/podman/cli.go
@@ -5,6 +5,7 @@ package podman
 import (
 	"fmt"
 	"github.com/wagoodman/dive/utils"
+	"io"
 	"os"
 	"os/exec"
 )
@@ -27,6 +28,25 @@ func runPodmanCmd(cmdStr string, args ...string) error {
 	return cmd.Run()
 }
 
+func streamPodmanCmd(args ...string) (error, io.Reader) {
+	if !isPodmanClientBinaryAvailable() {
+		return fmt.Errorf("cannot find podman client executable"), nil
+	}
+
+	cmd := exec.Command("podman", utils.CleanArgs(args)...)
+	cmd.Env = os.Environ()
+
+	reader, writer, err := os.Pipe()
+	if err != nil {
+		return err, nil
+	}
+
+	cmd.Stdout = writer
+	cmd.Stderr = os.Stderr
+
+	return cmd.Start(), reader
+}
+
 func isPodmanClientBinaryAvailable() bool {
 	_, err := exec.LookPath("podman")
 	return err == nil
diff --git a/dive/image/podman/image_directory.go b/dive/image/podman/image_directory.go
deleted file mode 100644
index 1b9c289..0000000
--- a/dive/image/podman/image_directory.go
+++ /dev/null
@@ -1,128 +0,0 @@
-// +build linux
-
-package podman
-
-import (
-	"context"
-	"fmt"
-	podmanImage "github.com/containers/libpod/libpod/image"
-	"github.com/wagoodman/dive/dive/filetree"
-	"github.com/wagoodman/dive/dive/image"
-	"os"
-	"path/filepath"
-	"strings"
-)
-
-type ImageDirectoryRef struct {
-	layerOrder []string
-	treeMap    map[string]*filetree.FileTree
-	layerMap   map[string]*podmanImage.Image
-}
-
-func NewImageDirectoryRef(img *podmanImage.Image) (*ImageDirectoryRef, error) {
-	imgDirRef := &ImageDirectoryRef{
-		layerOrder: make([]string, 0),
-		treeMap:    make(map[string]*filetree.FileTree),
-		layerMap:   make(map[string]*podmanImage.Image),
-	}
-
-	ctx := context.TODO()
-
-	curImg := img
-	for {
-		driver, err := curImg.DriverData()
-		if err != nil {
-			return nil, fmt.Errorf("graph driver error: %+v", err)
-		}
-
-		if driver.Name != "overlay" {
-			return nil, fmt.Errorf("unsupported graph driver: %s", driver.Name)
-		}
-
-		rootDir, exists := driver.Data["UpperDir"]
-		if !exists {
-			return nil, fmt.Errorf("graph has no upper dir")
-		}
-
-		if _, err := os.Stat(rootDir); os.IsNotExist(err) {
-			return nil, fmt.Errorf("graph root dir does not exist: %s", rootDir)
-		}
-
-		// build tree from directory...
-		tree, err := processLayer(curImg.ID(), rootDir)
-		if err != nil {
-			return nil, err
-		}
-
-		// record the tree and layer info
-		imgDirRef.treeMap[curImg.ID()] = tree
-		imgDirRef.layerMap[curImg.ID()] = curImg
-		imgDirRef.layerOrder = append([]string{curImg.ID()}, imgDirRef.layerOrder...)
-
-		// continue to the next image
-		curImg, err = curImg.GetParent(ctx)
-		if err != nil || curImg == nil {
-			break
-		}
-	}
-
-	return imgDirRef, nil
-}
-
-func processLayer(name, rootDir string) (*filetree.FileTree, error) {
-	tree := filetree.NewFileTree()
-	tree.Name = name
-
-	err := filepath.Walk(rootDir, func(path string, info os.FileInfo, err error) error {
-		if err != nil {
-			return err
-		}
-		// add this file to the tree...
-		relativeImagePath := "/" + strings.TrimPrefix(strings.TrimPrefix(path, rootDir), "/")
-		fileInfo := filetree.NewFileInfo(path, relativeImagePath, info)
-
-		tree.FileSize += uint64(fileInfo.Size)
-
-		_, _, err = tree.AddPath(fileInfo.Path, fileInfo)
-		if err != nil {
-			return err
-		}
-
-		return nil
-	})
-	if err != nil {
-		return nil, fmt.Errorf("unable to walk upper directory tree")
-	}
-
-	return tree, nil
-}
-
-func (img *ImageDirectoryRef) ToImage() (*image.Image, error) {
-	trees := make([]*filetree.FileTree, 0)
-	layers := make([]*image.Layer, 0)
-
-	// build the content tree
-	for layerIdx, id := range img.layerOrder {
-		tr, exists := img.treeMap[id]
-		if !exists {
-			return nil, fmt.Errorf("could not find '%s' in parsed trees", id)
-		}
-		trees = append(trees, tr)
-
-		// note that the resolver config stores images in reverse chronological order, so iterate backwards through layers
-		// as you iterate chronologically through history (ignoring history items that have no layer contents)
-		// Note: history is not required metadata in an OCI image!
-		podmanLayer := layer{
-			obj:   img.layerMap[id],
-			index: layerIdx,
-			tree:  trees[layerIdx],
-		}
-		layers = append(layers, podmanLayer.ToLayer())
-	}
-
-	return &image.Image{
-		Trees:  trees,
-		Layers: layers,
-	}, nil
-
-}
diff --git a/dive/image/podman/layer.go b/dive/image/podman/layer.go
deleted file mode 100644
index dd16d28..0000000
--- a/dive/image/podman/layer.go
+++ /dev/null
@@ -1,78 +0,0 @@
-// +build linux
-
-package podman
-
-import (
-	"context"
-	"fmt"
-	podmanImage "github.com/containers/libpod/libpod/image"
-	"github.com/wagoodman/dive/dive/filetree"
-	"github.com/wagoodman/dive/dive/image"
-	"strings"
-)
-
-// Layer represents a Docker image layer and metadata
-type layer struct {
-	obj     *podmanImage.Image
-	history *podmanImage.History
-	index   int
-	tree    *filetree.FileTree
-}
-
-func (l *layer) getHistory() (*podmanImage.History, error) {
-	if l.history != nil {
-		return l.history, nil
-	}
-	history, err := l.obj.History(context.TODO())
-	if err != nil {
-		return nil, err
-	}
-	if len(history) > 0 {
-		l.history = history[0]
-		return history[0], nil
-	}
-	return nil, fmt.Errorf("could not find history")
-}
-
-func (l *layer) Size() uint64 {
-	history, err := l.getHistory()
-	if err != nil {
-		// todo: what should be done here???
-		panic(err)
-	}
-	return uint64(history.Size)
-}
-
-// ShortId returns the truncated id of the current layer.
-func (l *layer) Command() string {
-	history, err := l.getHistory()
-	if err != nil {
-		return "error: " + err.Error()
-	}
-	return strings.TrimPrefix(history.CreatedBy, "/bin/sh -c ")
-}
-
-// ShortId returns the truncated id of the current layer.
-func (l *layer) ShortId() string {
-	rangeBound := 15
-	id := l.obj.ID()
-	if length := len(id); length < 15 {
-		rangeBound = length
-	}
-	id = id[0:rangeBound]
-
-	return id
-}
-
-// String represents a layer in a columnar format.
-func (l *layer) ToLayer() *image.Layer {
-	return &image.Layer{
-		Id:      l.obj.ID(),
-		Index:   l.index,
-		Command: l.Command(),
-		Size:    l.Size(),
-		Tree:    l.tree,
-		Names:   l.obj.Names(),
-		Digest:  l.obj.Digest().String(),
-	}
-}
diff --git a/dive/image/podman/resolver_linux.go b/dive/image/podman/resolver_linux.go
index 928bd35..592c038 100644
--- a/dive/image/podman/resolver_linux.go
+++ b/dive/image/podman/resolver_linux.go
@@ -1,14 +1,10 @@
 package podman
 
 import (
-	"bufio"
-	"context"
 	"fmt"
-	"github.com/containers/libpod/libpod"
 	"github.com/wagoodman/dive/dive/image"
 	"github.com/wagoodman/dive/dive/image/docker"
 	"io/ioutil"
-	"os"
 )
 
 type resolver struct{}
@@ -26,105 +22,25 @@ func (r *resolver) Build(args []string) (*image.Image, error) {
 }
 
 func (r *resolver) Fetch(id string) (*image.Image, error) {
-	// todo: there are still a number of bugs remaining with this approach --stick with the docker archive for now
-	// img, err := r.resolveFromDisk(id)
-	// if err == nil {
-	// 	return img, err
-	// }
+	// todo: add podman fetch attempt via varlink first...
 
 	img, err := r.resolveFromDockerArchive(id)
 	if err == nil {
 		return img, err
 	}
 
-	return nil, fmt.Errorf("unable to resolve image '%s'", id)
+	return nil, fmt.Errorf("unable to resolve image '%s': %+v", id, err)
 }
 
-// func (r *resolver) resolveFromDisk(id string) (*image.Image, error) {
-// 	var img *ImageDirectoryRef
-// 	var err error
-//
-// 	runtime, err := libpod.NewRuntime(context.TODO())
-// 	if err != nil {
-// 		return nil, err
-// 	}
-//
-// 	images, err := runtime.ImageRuntime().GetImages()
-// 	if err != nil {
-// 		return nil, err
-// 	}
-//
-// ImageLoop:
-// 	for _, candidateImage := range images {
-// 		for _, name := range candidateImage.Names() {
-// 			if name == id {
-// 				img, err = NewImageDirectoryRef(candidateImage)
-// 				if err != nil {
-// 					return nil, err
-// 				}
-// 				break ImageLoop
-// 			}
-// 		}
-// 	}
-//
-// 	if img == nil {
-// 		return nil, fmt.Errorf("could not find image by name: '%s'", id)
-// 	}
-//
-// 	return img.ToImage()
-// }
-
 func (r *resolver) resolveFromDockerArchive(id string) (*image.Image, error) {
-	path, err := r.fetchDockerArchive(id)
-	if err != nil {
-		return nil, err
-	}
-	defer os.Remove(path)
-
-	file, err := os.Open(path)
+	err, reader := streamPodmanCmd("image", "save", id)
 	if err != nil {
 		return nil, err
 	}
-	defer file.Close()
 
-	img, err := docker.NewImageArchive(ioutil.NopCloser(bufio.NewReader(file)))
+	img, err := docker.NewImageArchive(ioutil.NopCloser(reader))
 	if err != nil {
 		return nil, err
 	}
 	return img.ToImage()
 }
-
-func (r *resolver) fetchDockerArchive(id string) (string, error) {
-	var err error
-	var ctx = context.Background()
-
-	runtime, err := libpod.NewRuntime(ctx)
-	if err != nil {
-		return "", err
-	}
-
-	images, err := runtime.ImageRuntime().GetImages()
-	if err != nil {
-		return "", err
-	}
-
-	for _, item := range images {
-		for _, name := range item.Names() {
-			if name == id {
-				file, err := ioutil.TempFile(os.TempDir(), "dive-resolver-tar")
-				if err != nil {
-					return "", err
-				}
-
-				err = item.Save(ctx, "dive-export", "docker-archive", file.Name(), []string{}, false, false)
-				if err != nil {
-					return "", err
-				}
-
-				return file.Name(), nil
-			}
-		}
-	}
-
-	return "", fmt.Errorf("image could not be found")
-}
diff --git a/go.mod b/go.mod
index a40b48f..b96e5af 100644
--- a/go.mod
+++ b/go.mod
@@ -3,36 +3,51 @@ module github.com/wagoodman/dive
 go 1.13
 
 require (
-	github.com/14rcole/gopopulate v0.0.0-20180821133914-b175b219e774 // indirect
+	github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78 // indirect
 	github.com/Microsoft/go-winio v0.4.14 // indirect
 	github.com/cespare/xxhash v1.1.0
-	github.com/containers/libpod v1.6.1
 	github.com/docker/cli v0.0.0-20190906153656-016a3232168d
+	github.com/docker/distribution v2.7.1+incompatible // indirect
 	github.com/docker/docker v0.7.3-0.20190309235953-33c3200e0d16
+	github.com/docker/go-connections v0.4.0 // indirect
+	github.com/docker/go-units v0.4.0 // indirect
 	github.com/dustin/go-humanize v1.0.0
-	github.com/elazarl/goproxy/ext v0.0.0-20190911111923-ecfe977594f1 // indirect
 	github.com/fatih/color v1.7.0
 	github.com/gogo/protobuf v1.3.0 // indirect
+	github.com/google/go-cmp v0.3.0 // indirect
 	github.com/google/uuid v1.1.1
+	github.com/gorilla/mux v1.7.2 // indirect
 	github.com/jroimartin/gocui v0.4.0
+	github.com/konsorten/go-windows-terminal-sequences v1.0.2 // indirect
 	github.com/logrusorgru/aurora v0.0.0-20190803045625-94edacc10f9b
 	github.com/lunixbochs/vtclean v1.0.0
+	github.com/magiconair/properties v1.8.1 // indirect
 	github.com/mattn/go-colorable v0.1.2 // indirect
 	github.com/mattn/go-isatty v0.0.9 // indirect
 	github.com/mattn/go-runewidth v0.0.4 // indirect
 	github.com/mitchellh/go-homedir v1.1.0
 	github.com/morikuni/aec v1.0.0 // indirect
 	github.com/nsf/termbox-go v0.0.0-20190817171036-93860e161317 // indirect
+	github.com/opencontainers/go-digest v1.0.0-rc1 // indirect
+	github.com/opencontainers/image-spec v1.0.1 // indirect
+	github.com/pelletier/go-toml v1.4.0 // indirect
 	github.com/phayes/permbits v0.0.0-20190612203442-39d7c581d2ee
 	github.com/sergi/go-diff v1.0.0
 	github.com/sirupsen/logrus v1.4.2
 	github.com/spf13/afero v1.2.2
 	github.com/spf13/cobra v0.0.5
+	github.com/spf13/jwalterweatherman v1.1.0 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
 	github.com/spf13/viper v1.4.0
+	github.com/stretchr/testify v1.4.0 // indirect
 	github.com/wagoodman/keybinding v0.0.0-20181213133715-6a824da6df05
-	golang.org/x/crypto v0.0.0-20190907121410-71b5226ff739 // indirect
+	golang.org/x/crypto v0.0.0-20190907121410-71b5226ff739
 	golang.org/x/net v0.0.0-20190827160401-ba9fcec4b297
 	golang.org/x/sys v0.0.0-20190907184412-d223b2b6db03 // indirect
+	golang.org/x/text v0.3.2 // indirect
+	google.golang.org/genproto v0.0.0-20190620144150-6af8c5fc6601 // indirect
+	google.golang.org/grpc v1.21.1 // indirect
+	gotest.tools v2.2.0+incompatible // indirect
 )
 
 // related to an invalid pseudo version in github.com/docker/distribution@v0.0.0-20181126153310-93e082742a009850ac46962150b2f652a822c5ff
diff --git a/go.sum b/go.sum
index 6550cf5..5186a53 100644
--- a/go.sum
+++ b/go.sum
@@ -1,272 +1,94 @@
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
-cloud.google.com/go v0.40.0/go.mod h1:Tk58MuI9rbLMKlAjeO/bDnteAx7tX2gJIXw4T5Jwlro=
-github.com/14rcole/gopopulate v0.0.0-20180821133914-b175b219e774 h1:SCbEWT58NSt7d2mcFdvxC9uyrdcTfvBbPLThhkDmXzg=
-github.com/14rcole/gopopulate v0.0.0-20180821133914-b175b219e774/go.mod h1:6/0dYRLLXyJjbkIPeeGyoJ/eKOSI0eU6eTlCBYibgd0=
 github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78 h1:w+iIsaOQNcT7OZ575w+acHgRric5iCyQh+xv+KJ4HB8=
 github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78/go.mod h1:LmzpDX56iTiv29bbRTIsUNlaFfuhWRQBWjQdVyAevI8=
-github.com/Azure/go-autorest v11.1.2+incompatible/go.mod h1:r+4oMnoxhatjLLJ6zxSWATqVooLgysK6ZNox3g/xq24=
-github.com/Azure/go-autorest v12.1.0+incompatible/go.mod h1:r+4oMnoxhatjLLJ6zxSWATqVooLgysK6ZNox3g/xq24=
 github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
-github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
-github.com/DataDog/zstd v1.4.0/go.mod h1:1jcaCB/ufaK+sKp1NBhlGmpz41jOoPQ35bpF36t7BBo=
-github.com/Microsoft/go-winio v0.4.11/go.mod h1:VhR8bwka0BXejwEJY73c50VrPtXAaKcyvVC4A4RozmA=
-github.com/Microsoft/go-winio v0.4.12/go.mod h1:VhR8bwka0BXejwEJY73c50VrPtXAaKcyvVC4A4RozmA=
 github.com/Microsoft/go-winio v0.4.14 h1:+hMXMk01us9KgxGb7ftKQt2Xpf5hH/yky+TDA+qxleU=
 github.com/Microsoft/go-winio v0.4.14/go.mod h1:qXqCSQ3Xa7+6tgxaGTIe4Kpcdsi+P8jBhyzoq1bpyYA=
-github.com/Microsoft/hcsshim v0.8.6 h1:ZfF0+zZeYdzMIVMZHKtDKJvLHj76XCuVae/jNkjj0IA=
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