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extract_tools.go
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extract_tools.go
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package release
import (
"archive/tar"
"archive/zip"
"bufio"
"bytes"
"compress/gzip"
"context"
"crypto/sha256"
"encoding/hex"
"fmt"
"hash"
"io"
"io/ioutil"
"os"
"path/filepath"
"regexp"
"runtime"
"sort"
"strings"
"sync"
"syscall"
"golang.org/x/crypto/ssh/terminal"
"golang.org/x/crypto/openpgp"
"k8s.io/klog/v2"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/sets"
"k8s.io/cli-runtime/pkg/genericclioptions"
appsv1client "k8s.io/client-go/kubernetes/typed/apps/v1"
"k8s.io/client-go/rest"
"k8s.io/utils/pointer"
"sigs.k8s.io/yaml"
"github.com/MakeNowJust/heredoc"
configv1 "github.com/openshift/api/config/v1"
configv1client "github.com/openshift/client-go/config/clientset/versioned/typed/config/v1"
imagereference "github.com/openshift/library-go/pkg/image/reference"
"github.com/openshift/library-go/pkg/manifest"
"github.com/openshift/oc/pkg/cli/admin/internal/codesign"
"github.com/openshift/oc/pkg/cli/image/extract"
"github.com/openshift/oc/pkg/cli/image/imagesource"
"github.com/openshift/oc/pkg/version"
)
// extractTarget describes how a file in the release image can be extracted to disk.
type extractTarget struct {
OS string
Arch string
Command string
Optional bool
NewArch bool
InjectReleaseImage bool
InjectReleaseVersion bool
SignMachOBinary bool
ArchiveFormat string
AsArchive bool
AsZip bool
Readme string
LinkTo []string
Mapping extract.Mapping
}
// installConfig is a stub for loading what we need from install-configs without having to vendor all of github.com/openshift/installer/pkg/types.
type installConfig struct {
metav1.TypeMeta `json:",inline"`
metav1.ObjectMeta `json:"metadata"`
Platform map[string]interface{} `json:"platform"`
Capabilities *configv1.ClusterVersionCapabilitiesSpec `json:"capabilities,omitempty"`
FeatureSet configv1.FeatureSet `json:"featureSet,omitempty"`
}
// manifestInclusionConfiguration configures manifest inclusion, so
// callers can opt in to new filtering options instead of having to
// update existing call-sites, even if they do not need a new
// filtering option.
type manifestInclusionConfiguration struct {
// ExcludeIdentifier, if non-nil, excludes manifests that match the exclusion identifier.
ExcludeIdentifier *string
// RequiredFeatureSet, if non-nil, excludes manifests unless they match the desired feature set.
RequiredFeatureSet *string
// Profile, if non-nil, excludes manifests unless they match the cluster profile.
Profile *string
// Capabilities, if non-nil, excludes manifests unless they match the enabled cluster capabilities.
Capabilities *configv1.ClusterVersionCapabilitiesStatus
// Overrides excludes manifests for overridden resources.
Overrides []configv1.ComponentOverride
// Platform, if non-nil, excludes CredentialsRequests manifests unless they match the infrastructure platform.
Platform *string
}
type includer func(m *manifest.Manifest) error
// extractTools extracts all referenced commands as archives in the target dir.
func (o *ExtractOptions) extractTools() error {
return o.extractCommand("")
}
var (
readmeInstallUnix = heredoc.Doc(`
# OpenShift Install
The OpenShift installer \u0060openshift-install\u0060 makes it easy to get a cluster
running on the public cloud or your local infrastructure.
To learn more about installing OpenShift, visit [docs.openshift.com](https://docs.openshift.com)
and select the version of OpenShift you are using.
## Installing the tools
After extracting this archive, you can move the \u0060openshift-install\u0060 binary
to a location on your PATH such as \u0060/usr/local/bin\u0060, or keep it in a temporary
directory and reference it via \u0060./openshift-install\u0060.
## License
OpenShift is licensed under the Apache Public License 2.0. The source code for this
program is [located on github](https://github.com/openshift/installer).
`)
readmeCLIUnix = heredoc.Doc(`
# OpenShift Clients
The OpenShift client \u0060oc\u0060 simplifies working with Kubernetes and OpenShift
clusters, offering a number of advantages over \u0060kubectl\u0060 such as easy login,
kube config file management, and access to developer tools. The \u0060kubectl\u0060
binary is included alongside for when strict Kubernetes compliance is necessary.
To learn more about OpenShift, visit [docs.openshift.com](https://docs.openshift.com)
and select the version of OpenShift you are using.
## Installing the tools
After extracting this archive, move the \u0060oc\u0060 and \u0060kubectl\u0060 binaries
to a location on your PATH such as \u0060/usr/local/bin\u0060. Then run:
oc login [API_URL]
to start a session against an OpenShift cluster. After login, run \u0060oc\u0060 and
\u0060oc help\u0060 to learn more about how to get started with OpenShift.
## License
OpenShift is licensed under the Apache Public License 2.0. The source code for this
program is [located on github](https://github.com/openshift/oc).
`)
readmeCLIWindows = heredoc.Doc(`
# OpenShift Clients
The OpenShift client \u0060oc.exe\u0060 simplifies working with Kubernetes and OpenShift
clusters, offering a number of advantages over \u0060kubectl.exe\u0060 such as easy login,
kube config file management, and access to developer tools.
To learn more about OpenShift, visit [docs.openshift.com](https://docs.openshift.com)
and select the version of OpenShift you are using.
## Installing the tools
After extracting this archive, move the \u0060oc.exe\u0060 binary to a location on your
PATH. Then run:
oc login [API_URL]
to start a session against an OpenShift cluster. After login, run \u0060oc.exe\u0060 and
\u0060oc.exe help\u0060 to learn more about how to get started with OpenShift.
If you would like to use \u0060kubectl.exe\u0060 instead, copy the \u0060oc.exe\u0060 file
and rename it to \u0060kubectl.exe\u0060. The interface will follow the conventions of that
CLI.
## License
OpenShift is licensed under the Apache Public License 2.0. The source code for this
program is [located on github](https://github.com/openshift/oc).
`)
readmeCCOUnix = heredoc.Doc(`
# Cloud Credential Operator utility
The ccoctl tool provides various commands to assist with the creating and maintenance of
cloud credentials from outside the cluster (necessary when CCO is put in "Manual" mode).
To learn more about OpenShift, visit [docs.openshift.com](https://docs.openshift.com)
and select the version of OpenShift you are using.
## Installing the tools
After extracting this archive, move the \u0060ccoctl\u0060 binary to a location on your
PATH such as \u0060/usr/local/bin\u0060, or keep it in a temporary directory and
reference it via \u0060./ccoctl\u0060.
## License
OpenShift is licensed under the Apache Public License 2.0. The source code for this
program is [located on github](https://github.com/openshift/cloud-credential-operator).
`)
// indicates that the architecture of the binary matches the release payload
targetReleaseArch = "release-arch"
)
// extractTools extracts specific commands out of images referenced by the release image.
// TODO: in the future the metadata this command contains might be loaded from the release
//
// image, but we must maintain compatibility with older payloads if so
func (o *ExtractOptions) extractCommand(command string) error {
// Available targets is treated as a GA API and may not be changed without backwards
// compatibility of at least N-2 releases.
availableTargets := []extractTarget{
{
OS: "darwin",
Arch: "amd64",
Command: "oc",
Mapping: extract.Mapping{Image: "cli-artifacts", From: "usr/share/openshift/mac/oc"},
LinkTo: []string{"kubectl"},
Readme: readmeCLIUnix,
InjectReleaseVersion: true,
ArchiveFormat: "openshift-client-mac-%s.tar.gz",
},
{
OS: "darwin",
Arch: "arm64",
Command: "oc",
NewArch: true,
Mapping: extract.Mapping{Image: "cli-artifacts", From: "usr/share/openshift/mac_arm64/oc"},
LinkTo: []string{"kubectl"},
Readme: readmeCLIUnix,
InjectReleaseVersion: true,
SignMachOBinary: true,
ArchiveFormat: "openshift-client-mac-arm64-%s.tar.gz",
},
{
OS: "linux",
Arch: targetReleaseArch,
Command: "oc",
Mapping: extract.Mapping{Image: "cli", From: "usr/bin/oc"},
LinkTo: []string{"kubectl"},
Readme: readmeCLIUnix,
InjectReleaseVersion: true,
ArchiveFormat: "openshift-client-linux-%s.tar.gz",
},
{
OS: "linux",
Arch: "amd64",
Command: "oc",
Mapping: extract.Mapping{Image: "cli-artifacts", From: "usr/share/openshift/linux_amd64/oc"},
LinkTo: []string{"kubectl"},
Readme: readmeCLIUnix,
InjectReleaseVersion: true,
ArchiveFormat: "openshift-client-linux-amd64-%s.tar.gz",
},
{
OS: "linux",
Arch: "arm64",
Command: "oc",
NewArch: true,
Mapping: extract.Mapping{Image: "cli-artifacts", From: "usr/share/openshift/linux_arm64/oc"},
LinkTo: []string{"kubectl"},
Readme: readmeCLIUnix,
InjectReleaseVersion: true,
ArchiveFormat: "openshift-client-linux-arm64-%s.tar.gz",
},
{
OS: "windows",
Arch: "amd64",
Command: "oc",
Mapping: extract.Mapping{Image: "cli-artifacts", From: "usr/share/openshift/windows/oc.exe"},
Readme: readmeCLIWindows,
InjectReleaseVersion: true,
ArchiveFormat: "openshift-client-windows-%s.zip",
AsZip: true,
},
{
OS: "darwin",
Arch: "amd64",
Command: "openshift-install",
Mapping: extract.Mapping{Image: "installer-artifacts", From: "usr/share/openshift/mac/openshift-install"},
Readme: readmeInstallUnix,
InjectReleaseImage: true,
InjectReleaseVersion: true,
ArchiveFormat: "openshift-install-mac-%s.tar.gz",
},
{
OS: "darwin",
Arch: "arm64",
Command: "openshift-install",
NewArch: true,
Mapping: extract.Mapping{Image: "installer-artifacts", From: "usr/share/openshift/mac_arm64/openshift-install"},
Readme: readmeInstallUnix,
InjectReleaseImage: true,
InjectReleaseVersion: true,
SignMachOBinary: true,
ArchiveFormat: "openshift-install-mac-arm64-%s.tar.gz",
},
{
OS: "linux",
Arch: targetReleaseArch,
Command: "openshift-install",
Mapping: extract.Mapping{Image: "installer", From: "usr/bin/openshift-install"},
Readme: readmeInstallUnix,
InjectReleaseImage: true,
InjectReleaseVersion: true,
ArchiveFormat: "openshift-install-linux-%s.tar.gz",
},
{
OS: "linux",
Arch: "amd64",
Command: "openshift-install",
NewArch: true,
Mapping: extract.Mapping{Image: "installer-artifacts", From: "usr/share/openshift/linux_amd64/openshift-install"},
Readme: readmeInstallUnix,
InjectReleaseImage: true,
InjectReleaseVersion: true,
ArchiveFormat: "openshift-install-linux-amd64-%s.tar.gz",
},
{
OS: "linux",
Arch: "arm64",
Command: "openshift-install",
NewArch: true,
Mapping: extract.Mapping{Image: "installer-artifacts", From: "usr/share/openshift/linux_arm64/openshift-install"},
Readme: readmeInstallUnix,
InjectReleaseImage: true,
InjectReleaseVersion: true,
ArchiveFormat: "openshift-install-linux-arm64-%s.tar.gz",
},
{
OS: "linux",
Arch: targetReleaseArch,
Command: "openshift-baremetal-install",
Optional: true,
Mapping: extract.Mapping{Image: "baremetal-installer", From: "usr/bin/openshift-install"},
Readme: readmeInstallUnix,
InjectReleaseImage: true,
InjectReleaseVersion: true,
ArchiveFormat: "openshift-baremetal-install-linux-%s.tar.gz",
},
{
OS: "linux",
Arch: targetReleaseArch,
Command: "ccoctl",
NewArch: true,
Mapping: extract.Mapping{Image: "cloud-credential-operator", From: "usr/bin/ccoctl"},
Readme: readmeCCOUnix,
ArchiveFormat: "ccoctl-linux-%s.tar.gz",
},
}
currentArch := runtime.GOARCH
currentOS := runtime.GOOS
if len(o.CommandOperatingSystem) > 0 {
currentOS = o.CommandOperatingSystem
if currentOS == "*" {
currentArch = "*"
} else {
parsed := strings.Split(currentOS, "/")
switch len(parsed) {
case 1:
// --command-os=linux
currentArch = "amd64"
case 2:
// --command-os=linux/amd64
currentOS = parsed[0]
currentArch = parsed[1]
default:
return fmt.Errorf("invalid --command-os value")
}
}
}
if currentOS == "mac" {
currentOS = "darwin"
}
// Select the subset of targets based on command line input
var willArchive bool
var targets []extractTarget
// Filter by command, or gather all non-optional targets
if len(command) > 0 {
for _, target := range availableTargets {
if target.Command == command {
targets = append(targets, target)
}
}
} else {
for _, target := range availableTargets {
if !target.Optional {
targets = append(targets, target)
}
}
}
// If the user didn't specify a command, or the operating system is set
// to '*', we'll produce an archive
if len(command) == 0 || o.CommandOperatingSystem == "*" {
for i := range targets {
targets[i].AsArchive = true
targets[i].AsZip = targets[i].OS == "windows"
}
}
if len(targets) == 0 {
switch {
case len(command) > 0 && currentOS != "*":
return fmt.Errorf("command %q does not support the operating system %q", o.Command, currentOS)
case len(command) > 0:
return fmt.Errorf("the supported commands are 'oc' and 'openshift-install'")
default:
return fmt.Errorf("no available commands")
}
}
var hashFn = sha256.New
var signer *openpgp.Entity
if willArchive && len(o.SigningKey) > 0 {
key, err := ioutil.ReadFile(o.SigningKey)
if err != nil {
return err
}
keyring, err := openpgp.ReadArmoredKeyRing(bytes.NewBuffer(key))
if err != nil {
return err
}
for _, key := range keyring {
if !key.PrivateKey.CanSign() {
continue
}
fmt.Fprintf(o.Out, "Enter password for private key: ")
password, err := terminal.ReadPassword(int(syscall.Stdin))
fmt.Fprintln(o.Out)
if err != nil {
return err
}
if err := key.PrivateKey.Decrypt(password); err != nil {
return fmt.Errorf("unable to decrypt signing key: %v", err)
}
for i, subkey := range key.Subkeys {
if err := subkey.PrivateKey.Decrypt(password); err != nil {
return fmt.Errorf("unable to decrypt signing subkey %d: %v", i, err)
}
}
signer = key
break
}
if signer == nil {
return fmt.Errorf("no private key exists in %s capable of signing the output", o.SigningKey)
}
}
// load the release image
dir := o.Directory
infoOptions := NewInfoOptions(o.IOStreams)
infoOptions.SecurityOptions = o.SecurityOptions
infoOptions.FilterOptions = o.FilterOptions
infoOptions.FileDir = o.FileDir
infoOptions.ICSPFile = o.ICSPFile
release, err := infoOptions.LoadReleaseInfo(o.From, false)
if err != nil {
return err
}
releaseArch := release.Config.Architecture
releaseName := release.PreferredName()
refExact := release.ImageRef
refExact.Ref.Tag = ""
// if the release image is manifestlist image, we'll not change digest with
// arch based sha. Because we want that the extracted tool can be used for all archs.
if len(release.ManifestListDigest) == 0 {
refExact.Ref.ID = release.Digest.String()
} else {
// if the image is manifestlisted, use the manifestlist digest.
refExact.Ref.ID = release.ManifestListDigest.String()
}
exactReleaseImage := refExact.String()
// resolve target image references to their pull specs
missing := sets.NewString()
var validTargets []extractTarget
for _, target := range targets {
if currentOS != "*" && target.OS != currentOS {
klog.V(2).Infof("Skipping %s, does not match current OS %s", target.ArchiveFormat, target.OS)
continue
}
if currentArch != "*" && target.Arch != currentArch {
if currentArch != releaseArch || target.Arch != targetReleaseArch {
klog.V(2).Infof("Skipping %s, does not match current architecture %s", target.ArchiveFormat, target.Arch)
continue
}
}
if target.OS == "linux" && target.Arch == releaseArch {
klog.V(2).Infof("Skipping duplicate %s", target.ArchiveFormat)
continue
}
spec, err := findImageSpec(release.References, target.Mapping.Image, o.From)
if err != nil && !target.NewArch {
missing.Insert(target.Mapping.Image)
continue
}
klog.V(2).Infof("Will extract %s from %s", target.Mapping.From, spec)
ref, err := imagereference.Parse(spec)
if err != nil {
return err
}
target.Mapping.Image = spec
target.Mapping.ImageRef = imagesource.TypedImageReference{Ref: ref, Type: imagesource.DestinationRegistry}
if target.AsArchive {
willArchive = true
target.Mapping.Name = fmt.Sprintf(target.ArchiveFormat, releaseName)
target.Mapping.To = filepath.Join(dir, target.Mapping.Name)
} else {
target.Mapping.To = filepath.Join(dir, target.Command)
target.Mapping.Name = fmt.Sprintf("%s-%s-%s", target.OS, target.Arch, target.Command)
}
validTargets = append(validTargets, target)
}
if len(validTargets) == 0 {
if len(missing) == 1 {
return fmt.Errorf("the image %q containing the desired command is not available", missing.List()[0])
}
if len(missing) > 1 {
return fmt.Errorf("some required images are missing: %s", strings.Join(missing.List(), ", "))
}
return fmt.Errorf("the command '%s' is not available for %s/%s on %s", command, currentOS, currentArch, o.From)
}
if len(missing) > 0 {
fmt.Fprintf(o.ErrOut, "warning: Some commands can not be extracted due to missing images: %s\n", strings.Join(missing.List(), ", "))
}
// will extract in parallel
opts := extract.NewExtractOptions(genericclioptions.IOStreams{Out: o.Out, ErrOut: o.ErrOut})
opts.ParallelOptions = o.ParallelOptions
opts.SecurityOptions = o.SecurityOptions
opts.FilterOptions = o.FilterOptions
opts.ICSPFile = o.ICSPFile
opts.OnlyFiles = true
// create the mapping lookup of the valid targets
var extractLock sync.Mutex
targetsByName := make(map[string]extractTarget)
for _, target := range validTargets {
targetsByName[target.Mapping.Name] = target
opts.Mappings = append(opts.Mappings, target.Mapping)
}
hashByTargetName := make(map[string]string)
// ensure to is a directory
if err := os.MkdirAll(dir, 0777); err != nil {
return err
}
// as each layer is extracted, take the output binary and write it to disk
opts.TarEntryCallback = func(hdr *tar.Header, layer extract.LayerInfo, r io.Reader) (bool, error) {
// ensure we don't process the same mapping twice due to programmer error
target, ok := func() (extractTarget, bool) {
extractLock.Lock()
defer extractLock.Unlock()
target, ok := targetsByName[layer.Mapping.Name]
return target, ok
}()
if !ok {
return false, fmt.Errorf("unable to find target with mapping name %s", layer.Mapping.Name)
}
// open the file
f, err := os.OpenFile(layer.Mapping.To, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0755)
if err != nil {
return false, err
}
// if we need to write an archive, wrap the file appropriately to create a single
// entry
var w io.Writer = f
bw := bufio.NewWriterSize(w, 16*1024)
w = bw
var hash hash.Hash
closeFn := func() error { return nil }
if target.AsArchive {
text := strings.Replace(target.Readme, `\u0060`, "`", -1)
hash = hashFn()
w = io.MultiWriter(hash, w)
if target.AsZip {
klog.V(2).Infof("Writing %s as a ZIP archive %s", hdr.Name, layer.Mapping.To)
zw := zip.NewWriter(w)
if len(text) > 0 {
text = strings.Replace(text, "\n", "\r\n", -1)
zh := &zip.FileHeader{
Method: zip.Deflate,
Name: "README.md",
UncompressedSize64: uint64(len(text)),
Modified: hdr.ModTime,
}
zh.SetMode(os.FileMode(0755))
fw, err := zw.CreateHeader(zh)
if err != nil {
return false, err
}
if _, err := fmt.Fprintf(fw, text); err != nil {
return false, err
}
}
zh := &zip.FileHeader{
Method: zip.Deflate,
Name: target.Command + ".exe",
UncompressedSize64: uint64(hdr.Size),
Modified: hdr.ModTime,
}
zh.SetMode(os.FileMode(0755))
fw, err := zw.CreateHeader(zh)
if err != nil {
return false, err
}
w = fw
closeFn = func() error { return zw.Close() }
} else {
klog.V(2).Infof("Writing %s as a tar.gz archive %s", hdr.Name, layer.Mapping.To)
gw, err := gzip.NewWriterLevel(w, 3)
if err != nil {
return false, err
}
tw := tar.NewWriter(gw)
if len(text) > 0 {
if err := tw.WriteHeader(&tar.Header{
Name: "README.md",
Mode: int64(os.FileMode(0644).Perm()),
Size: int64(len(text)),
Typeflag: tar.TypeReg,
ModTime: hdr.ModTime,
}); err != nil {
return false, err
}
if _, err := fmt.Fprintf(tw, text); err != nil {
return false, err
}
}
if err := tw.WriteHeader(&tar.Header{
Name: target.Command,
Mode: int64(os.FileMode(0755).Perm()),
Size: hdr.Size,
Typeflag: tar.TypeReg,
ModTime: hdr.ModTime,
}); err != nil {
return false, err
}
w = tw
closeFn = func() error {
for _, link := range target.LinkTo {
if err := tw.WriteHeader(&tar.Header{
Name: link,
Mode: int64(os.FileMode(0755).Perm()),
Size: 0,
Typeflag: tar.TypeLink,
ModTime: hdr.ModTime,
Linkname: target.Command,
}); err != nil {
return err
}
}
if err := tw.Close(); err != nil {
return err
}
return gw.Close()
}
}
}
// copy the input to disk
replacements := []replacement{}
if target.InjectReleaseImage {
replacements = append(replacements, replacement{
name: "release image",
marker: append([]byte{0}, []byte(releaseImageMarker[1:])...),
value: exactReleaseImage,
})
}
if target.InjectReleaseVersion {
replacements = append(replacements, replacement{
name: "release version",
marker: append([]byte{0}, []byte(releaseVersionMarker[1:])...),
value: releaseName,
})
}
err = copyAndReplace(o.ErrOut, w, r, 4*1024, replacements, target.Command)
if err != nil {
closeFn()
f.Close()
os.Remove(f.Name())
return false, err
}
// ensure the file is written to disk
if err := closeFn(); err != nil {
return false, err
}
if err := bw.Flush(); err != nil {
return false, err
}
if err := f.Close(); err != nil {
return false, err
}
if err := os.Chtimes(f.Name(), hdr.ModTime, hdr.ModTime); err != nil {
klog.V(2).Infof("Unable to set extracted file modification time: %v", err)
}
if (target.InjectReleaseVersion || target.InjectReleaseImage) && target.SignMachOBinary {
if err = codesign.ResignMacho(layer.Mapping.To, target.AsArchive, target.Command, target.LinkTo); err != nil {
klog.Infof("Unable to resign macho binaries: %v", err)
}
}
func() {
extractLock.Lock()
defer extractLock.Unlock()
delete(targetsByName, layer.Mapping.Name)
if hash != nil {
hashByTargetName[layer.Mapping.To] = hex.EncodeToString(hash.Sum(nil))
}
}()
return false, nil
}
if err := opts.Run(); err != nil {
return err
}
if willArchive {
buf := &bytes.Buffer{}
fmt.Fprintf(buf, heredoc.Doc(`
Client tools for OpenShift
--------------------------
These archives contain the client tooling for [OpenShift](https://docs.openshift.com).
To verify the contents of this directory, use the 'gpg' and 'shasum' tools to
ensure the archives you have downloaded match those published from this location.
The openshift-install binary has been preconfigured to install the following release:
---
`))
if err := describeReleaseInfo(buf, release, false, false, true, false); err != nil {
return err
}
filename := "release.txt"
if err := ioutil.WriteFile(filepath.Join(dir, filename), buf.Bytes(), 0644); err != nil {
return err
}
hash := hashFn()
hash.Write(buf.Bytes())
hashByTargetName[filename] = hex.EncodeToString(hash.Sum(nil))
}
// write a checksum of the tar files to disk as sha256sum.txt.asc
if len(hashByTargetName) > 0 {
var keys []string
for k := range hashByTargetName {
keys = append(keys, k)
}
sort.Strings(keys)
var lines []string
for _, k := range keys {
hash := hashByTargetName[k]
lines = append(lines, fmt.Sprintf("%s %s", hash, filepath.Base(k)))
}
// ensure a trailing newline
if len(lines[len(lines)-1]) != 0 {
lines = append(lines, "")
}
// write the content manifest
data := []byte(strings.Join(lines, "\n"))
filename := "sha256sum.txt"
if err := ioutil.WriteFile(filepath.Join(dir, filename), data, 0644); err != nil {
return fmt.Errorf("unable to write checksum file: %v", err)
}
// sign the content manifest
if signer != nil {
buf := &bytes.Buffer{}
if err := openpgp.ArmoredDetachSign(buf, signer, bytes.NewBuffer(data), nil); err != nil {
return fmt.Errorf("unable to sign the sha256sum.txt file: %v", err)
}
if err := ioutil.WriteFile(filepath.Join(dir, filename+".asc"), buf.Bytes(), 0644); err != nil {
return fmt.Errorf("unable to write signed manifest: %v", err)
}
}
}
// if we did not process some targets, report that to the user and error if necessary
if len(targetsByName) > 0 {
var missing []string
for _, target := range targetsByName {
if target.NewArch {
continue
}
missing = append(missing, target.Mapping.From)
}
sort.Strings(missing)
if len(missing) == 1 {
return fmt.Errorf("image did not contain %s", missing[0])
}
if len(missing) > 1 {
return fmt.Errorf("unable to find multiple files: %s", strings.Join(missing, ", "))
}
}
return nil
}
const (
// releaseImageMarker is the placeholder within a binary for the release image pullspec.
releaseImageMarker = "!_RELEASE_IMAGE_LOCATION_\x00XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\x00"
// releaseVersionMarker is the placeholder within a binary for the release image version name string.
releaseVersionMarker = "!_RELEASE_VERSION_LOCATION_\x00XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\x00"
)
type replacement struct {
name string
marker []byte
value string
}
// copyAndReplace performs a targeted replacement for binaries that
// contain special marker strings, replacing the first occurrence of each
// marker with a new string and a NUL terminating byte. It logs a warning
// if any replacements are not performed.
func copyAndReplace(errorOutput io.Writer, w io.Writer, r io.Reader, bufferSize int, replacements []replacement, name string) error {
if len(replacements) == 0 {
_, err := io.Copy(w, r)
return err
}
longestMarker := 0
for _, replacement := range replacements {
if len(replacement.value) > len(replacement.marker)-1 {
return fmt.Errorf("the %s value has %d bytes, but the maximum replacement length is %d", replacement.name, len(replacement.value), len(replacement.marker)-1)
}
if len(replacement.marker) > longestMarker {
longestMarker = len(replacement.marker)
if bufferSize < longestMarker {
return fmt.Errorf("the buffer size must be greater than %d bytes to find %s", len(replacement.marker), replacement.name)
}
}
}
offset := 0
buf := make([]byte, bufferSize)
remaining := len(replacements)
matches := make([]bool, remaining)
for {
n, err := io.ReadFull(r, buf[offset:])
// search in the buffer for the expected match
end := offset + n
if n > 0 {
for i, matched := range matches {
if !matched {
replacement := replacements[i]
index := bytes.Index(buf[:end], replacement.marker)
if index != -1 {
klog.V(2).Infof("Found match for %s at %d (len=%d, offset=%d, n=%d)", replacements[i].name, index, len(buf), offset, n)
// the replacement starts at the beginning of the match, contains the replacement value and a terminating NUL byte
copy(buf[index:index+len(replacement.value)], []byte(replacement.value))
buf[index+len(replacement.value)] = 0x00
matches[i] = true
remaining -= 1
}
}
}
}
// write everything that we have already searched (excluding the end of the buffer that will
// be checked next pass)
writeTo := end - longestMarker
if writeTo < 0 {
writeTo = 0
}
if remaining == 0 || err != nil {
writeTo = end
}
offset = 0
for offset < writeTo {
n, wErr := w.Write(buf[offset:writeTo])
if wErr != nil {
return wErr
}
offset += n
}
if err != nil {
if err == io.EOF || err == io.ErrUnexpectedEOF {
remainingNames := make([]string, 0, len(replacements))
for i, matched := range matches {
if !matched {
remainingNames = append(remainingNames, replacements[i].name)
}
}
sort.Strings(remainingNames)
if len(remainingNames) > 0 {
fmt.Fprintf(errorOutput, "warning: Unable to make all expected replacements in %s. Remaining: %s", name, strings.Join(remainingNames, ", "))
}
return nil
}
return err
}
// once we match each replacement, we can copy the rest of the file without processing
if remaining == 0 {
_, err := io.Copy(w, r)
return err
}
// ensure the beginning of the buffer matches the end of the current buffer so that we
// can search for matches that span buffers
copy(buf[:writeTo], buf[writeTo:end])
offset = end - writeTo
}
}
func findClusterIncludeConfigFromInstallConfig(ctx context.Context, installConfigPath string) (manifestInclusionConfiguration, error) {
config := manifestInclusionConfiguration{}
clientVersion, reportedVersion, err := version.ExtractVersion()
if err != nil {
return config, err
}
if reportedVersion == "" {
reportedVersion = clientVersion.String()
}
installConfigBytes, err := os.ReadFile(installConfigPath)
if err != nil {
return config, err
}
data := installConfig{}
if err := yaml.Unmarshal(installConfigBytes, &data); err != nil {
return config, fmt.Errorf("failed to parse %s: %w", installConfigPath, err)
}
if data.APIVersion != "v1" {
return config, fmt.Errorf("unrecognized %s API version: %q (expected %q)", installConfigPath, data.APIVersion, "v1")
}
config.RequiredFeatureSet = pointer.String(string(data.FeatureSet))
config.Profile = pointer.String(manifest.DefaultClusterProfile) // assumption, but there's no install-config data about profile to give us more insight
for key := range data.Platform {
config.Platform = pointer.String(key)
}
if data.Capabilities != nil {
config.Capabilities = &configv1.ClusterVersionCapabilitiesStatus{}
if enabled, ok := configv1.ClusterVersionCapabilitySets[data.Capabilities.BaselineCapabilitySet]; !ok {
return config, fmt.Errorf("unrecognized baselineCapabilitySet %q", data.Capabilities.BaselineCapabilitySet)
} else {
if data.Capabilities.BaselineCapabilitySet == configv1.ClusterVersionCapabilitySetCurrent {
klog.Infof("If the eventual cluster will not be the same minor version as this %s 'oc', the actual %s capability set may differ.", reportedVersion, data.Capabilities.BaselineCapabilitySet)
}
config.Capabilities.EnabledCapabilities = append(config.Capabilities.EnabledCapabilities, enabled...)
}
config.Capabilities.EnabledCapabilities = append(config.Capabilities.EnabledCapabilities, data.Capabilities.AdditionalEnabledCapabilities...)