apps/kubevpn
1
0
Fork 0
mirror of https://github.com/kubenetworks/kubevpn.git synced 2025-12-24 11:51:13 +08:00
Code Issues Packages Projects Releases Wiki Activity

feat: add command cp

Browse Source
This commit is contained in:
wencaiwulue
2023-03-14 21:17:37 +08:00
committed by wencaiwulue
parent 30a82e25eb
commit c76ea03dfe
8 changed files with 531 additions and 62 deletions
Download Patch File Download Diff File Expand all files Collapse all files

140
cmd/kubevpn/cmds/cp.go Normal file
View File

@@ -0,0 +1,140 @@
package cmds
import (
"fmt"
"os"
"strings"
"github.com/spf13/cobra"
"k8s.io/cli-runtime/pkg/genericclioptions"
cmdutil "k8s.io/kubectl/pkg/cmd/util"
"k8s.io/kubectl/pkg/util/completion"
"k8s.io/kubectl/pkg/util/i18n"
"k8s.io/kubectl/pkg/util/templates"
"github.com/wencaiwulue/kubevpn/pkg/cp"
"github.com/wencaiwulue/kubevpn/pkg/handler"
"github.com/wencaiwulue/kubevpn/pkg/util"
)
var cpExample = templates.Examples(i18n.T(`
# !!!Important Note!!!
# Requires that the 'tar' binary is present in your container
# image. If 'tar' is not present, 'kubectl cp' will fail.
#
# For advanced use cases, such as symlinks, wildcard expansion or
# file mode preservation, consider using 'kubectl exec'.
# Copy /tmp/foo local file to /tmp/bar in a remote pod in namespace <some-namespace>
tar cf - /tmp/foo | kubectl exec -i -n <some-namespace> <some-pod> -- tar xf - -C /tmp/bar
# Copy /tmp/foo from a remote pod to /tmp/bar locally
kubectl exec -n <some-namespace> <some-pod> -- tar cf - /tmp/foo | tar xf - -C /tmp/bar
# Copy /tmp/foo_dir local directory to /tmp/bar_dir in a remote pod in the default namespace
kubectl cp /tmp/foo_dir <some-pod>:/tmp/bar_dir
# Copy /tmp/foo local file to /tmp/bar in a remote pod in a specific container
kubectl cp /tmp/foo <some-pod>:/tmp/bar -c <specific-container>
# Copy /tmp/foo local file to /tmp/bar in a remote pod in namespace <some-namespace>
kubectl cp /tmp/foo <some-namespace>/<some-pod>:/tmp/bar
# Copy /tmp/foo from a remote pod to /tmp/bar locally
kubectl cp <some-namespace>/<some-pod>:/tmp/foo /tmp/bar
# copy reverse proxy api-server behind of bastion host or ssh jump host
kubevpn dev deployment/productpage --ssh-addr 192.168.1.100:22 --ssh-username root --ssh-keyfile /Users/naison/.ssh/ssh.pem
# it also support ProxyJump, like
┌──────┐ ┌──────┐ ┌──────┐ ┌──────┐ ┌────────────┐
│ pc ├────►│ ssh1 ├────►│ ssh2 ├────►│ ssh3 ├─────►... ─────► │ api-server │
└──────┘ └──────┘ └──────┘ └──────┘ └────────────┘
kubevpn cp deployment/productpage --ssh-alias <alias>
`,
))
func CmdCp(f cmdutil.Factory) *cobra.Command {
o := cp.NewCopyOptions(genericclioptions.IOStreams{
In: os.Stdin,
Out: os.Stdout,
ErrOut: os.Stderr,
})
var sshConf = util.SshConfig{}
cmd := &cobra.Command{
Use: "cp <file-spec-src> <file-spec-dest>",
DisableFlagsInUseLine: true,
Short: i18n.T("Copy files and directories to and from containers"),
Long: i18n.T("Copy files and directories to and from containers."),
Example: cpExample,
ValidArgsFunction: func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
cmdutil.CheckErr(handler.SshJump(sshConf, cmd.Flags()))
var comps []string
if len(args) == 0 {
if strings.IndexAny(toComplete, "/.~") == 0 {
// Looks like a path, do nothing
} else if strings.Contains(toComplete, ":") {
// TODO: complete remote files in the pod
} else if idx := strings.Index(toComplete, "/"); idx > 0 {
// complete <namespace>/<pod>
namespace := toComplete[:idx]
template := "{{ range .items }}{{ .metadata.namespace }}/{{ .metadata.name }}: {{ end }}"
comps = completion.CompGetFromTemplate(&template, f, namespace, cmd, []string{"pod"}, toComplete)
} else {
// Complete namespaces followed by a /
for _, ns := range completion.CompGetResource(f, cmd, "namespace", toComplete) {
comps = append(comps, fmt.Sprintf("%s/", ns))
}
// Complete pod names followed by a :
for _, pod := range completion.CompGetResource(f, cmd, "pod", toComplete) {
comps = append(comps, fmt.Sprintf("%s:", pod))
}
// Finally, provide file completion if we need to.
// We only do this if:
// 1- There are other completions found (if there are no completions,
// the shell will do file completion itself)
// 2- If there is some input from the user (or else we will end up
// listing the entire content of the current directory which could
// be too many choices for the user)
if len(comps) > 0 && len(toComplete) > 0 {
if files, err := os.ReadDir("."); err == nil {
for _, file := range files {
filename := file.Name()
if strings.HasPrefix(filename, toComplete) {
if file.IsDir() {
filename = fmt.Sprintf("%s/", filename)
}
// We are completing a file prefix
comps = append(comps, filename)
}
}
}
} else if len(toComplete) == 0 {
// If the user didn't provide any input to complete,
// we provide a hint that a path can also be used
comps = append(comps, "./", "/")
}
}
}
return comps, cobra.ShellCompDirectiveNoSpace
},
Run: func(cmd *cobra.Command, args []string) {
cmdutil.CheckErr(o.Complete(f, cmd, args))
cmdutil.CheckErr(o.Validate())
cmdutil.CheckErr(o.Run())
},
}
cmdutil.AddContainerVarFlags(cmd, &o.Container, o.Container)
cmd.Flags().BoolVarP(&o.NoPreserve, "no-preserve", "", false, "The copied file/directory's ownership and permissions will not be preserved in the container")
cmd.Flags().IntVarP(&o.MaxTries, "retries", "", 0, "Set number of retries to complete a copy operation from a container. Specify 0 to disable or any negative value for infinite retrying. The default is 0 (no retry).")
// for ssh jumper host
cmd.Flags().StringVar(&sshConf.Addr, "ssh-addr", "", "Optional ssh jump server address to dial as <hostname>:<port>, eg: 127.0.0.1:22")
cmd.Flags().StringVar(&sshConf.User, "ssh-username", "", "Optional username for ssh jump server")
cmd.Flags().StringVar(&sshConf.Password, "ssh-password", "", "Optional password for ssh jump server")
cmd.Flags().StringVar(&sshConf.Keyfile, "ssh-keyfile", "", "Optional file with private key for SSH authentication")
cmd.Flags().StringVar(&sshConf.ConfigAlias, "ssh-alias", "", "Optional config alias with ~/.ssh/config for SSH authentication")
return cmd
}

1
cmd/kubevpn/cmds/root.go
View File

@@ -35,6 +35,7 @@ func NewKubeVPNCommand() *cobra.Command {
CmdUpgrade(factory),
CmdVersion(factory),
CmdOptions(factory),
CmdCp(factory),
},
},
{

201
pkg/cp/LICENSE Normal file
View File

@@ -0,0 +1,201 @@
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
separable from, or merely link (or bind by name) to the interfaces of,
the Work and Derivative Works thereof.
"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
to that Work or Derivative Works thereof, that is intentionally
submitted to Licensor for inclusion in the Work by the copyright owner
or by an individual or Legal Entity authorized to submit on behalf of
the copyright owner. For the purposes of this definition, "submitted"
means any form of electronic, verbal, or written communication sent
to the Licensor or its representatives, including but not limited to
communication on electronic mailing lists, source code control systems,
and issue tracking systems that are managed by, or on behalf of, the
Licensor for the purpose of discussing and improving the Work, but
excluding communication that is conspicuously marked or otherwise
designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
subsequently incorporated within the Work.
2. Grant of Copyright License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
copyright license to reproduce, prepare Derivative Works of,
publicly display, publicly perform, sublicense, and distribute the
Work and such Derivative Works in Source or Object form.
3. Grant of Patent License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
(except as stated in this section) patent license to make, have made,
use, offer to sell, sell, import, and otherwise transfer the Work,
where such license applies only to those patent claims licensable
by such Contributor that are necessarily infringed by their
Contribution(s) alone or by combination of their Contribution(s)
with the Work to which such Contribution(s) was submitted. If You
institute patent litigation against any entity (including a
cross-claim or counterclaim in a lawsuit) alleging that the Work
or a Contribution incorporated within the Work constitutes direct
or contributory patent infringement, then any patent licenses
granted to You under this License for that Work shall terminate
as of the date such litigation is filed.
4. Redistribution. You may reproduce and distribute copies of the
Work or Derivative Works thereof in any medium, with or without
modifications, and in Source or Object form, provided that You
meet the following conditions:
(a) You must give any other recipients of the Work or
Derivative Works a copy of this License; and
(b) You must cause any modified files to carry prominent notices
stating that You changed the files; and
(c) You must retain, in the Source form of any Derivative Works
that You distribute, all copyright, patent, trademark, and
attribution notices from the Source form of the Work,
excluding those notices that do not pertain to any part of
the Derivative Works; and
(d) If the Work includes a "NOTICE" text file as part of its
distribution, then any Derivative Works that You distribute must
include a readable copy of the attribution notices contained
within such NOTICE file, excluding those notices that do not
pertain to any part of the Derivative Works, in at least one
of the following places: within a NOTICE text file distributed
as part of the Derivative Works; within the Source form or
documentation, if provided along with the Derivative Works; or,
within a display generated by the Derivative Works, if and
wherever such third-party notices normally appear. The contents
of the NOTICE file are for informational purposes only and
do not modify the License. You may add Your own attribution
notices within Derivative Works that You distribute, alongside
or as an addendum to the NOTICE text from the Work, provided
that such additional attribution notices cannot be construed
as modifying the License.
You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
for use, reproduction, or distribution of Your modifications, or
for any such Derivative Works as a whole, provided Your use,
reproduction, and distribution of the Work otherwise complies with
the conditions stated in this License.
5. Submission of Contributions. Unless You explicitly state otherwise,
any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor,
except as required for reasonable and customary use in describing the
origin of the Work and reproducing the content of the NOTICE file.
7. Disclaimer of Warranty. Unless required by applicable law or
agreed to in writing, Licensor provides the Work (and each
Contributor provides its Contributions) on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied, including, without limitation, any warranties or conditions
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "{}"
replaced with your own identifying information. (Don't include
the brackets!) The text should be enclosed in the appropriate
comment syntax for the file format. We also recommend that a
file or class name and description of purpose be included on the
same "printed page" as the copyright notice for easier
identification within third-party archives.
Copyright {yyyy} {name of copyright owner}
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

182
pkg/util/cp/cp.go → pkg/cp/cp.go
View File

@@ -132,6 +132,9 @@ func (o *CopyOptions) Run() error {
if len(srcSpec.PodName) != 0 {
return o.copyFromPod(srcSpec, destSpec)
}
if len(destSpec.PodName) != 0 {
return o.copyToPod(srcSpec, destSpec, &exec.ExecOptions{})
}
return fmt.Errorf("one of src or dest must be a remote file specification")
}
@@ -158,6 +161,54 @@ func (o *CopyOptions) checkDestinationIsDir(dest fileSpec) error {
return o.execute(options)
}
func (o *CopyOptions) copyToPod(src, dest fileSpec, options *exec.ExecOptions) error {
if _, err := os.Stat(src.File.String()); err != nil {
return fmt.Errorf("%s doesn't exist in local filesystem", src.File)
}
reader, writer := io.Pipe()
srcFile := src.File.(localPath)
destFile := dest.File.(remotePath)
if err := o.checkDestinationIsDir(dest); err == nil {
// If no error, dest.File was found to be a directory.
// Copy specified src into it
destFile = destFile.Join(srcFile.Base())
}
go func(src localPath, dest remotePath, writer io.WriteCloser) {
defer writer.Close()
cmdutil.CheckErr(makeTar(src, dest, writer))
}(srcFile, destFile, writer)
var cmdArr []string
if o.NoPreserve {
cmdArr = []string{"tar", "--no-same-permissions", "--no-same-owner", "-xmfh", "-"}
} else {
cmdArr = []string{"tar", "-xmfh", "-"}
}
destFileDir := destFile.Dir().String()
if len(destFileDir) > 0 {
cmdArr = append(cmdArr, "-C", destFileDir)
}
options.StreamOptions = exec.StreamOptions{
IOStreams: genericclioptions.IOStreams{
In: reader,
Out: o.Out,
ErrOut: o.ErrOut,
},
Stdin: true,
Namespace: dest.PodNamespace,
PodName: dest.PodName,
}
options.Command = cmdArr
options.Executor = &exec.DefaultRemoteExecutor{}
return o.execute(options)
}
func (o *CopyOptions) copyFromPod(src, dest fileSpec) error {
reader := newTarPipe(src, o)
srcFile := src.File.(remotePath)
@@ -199,17 +250,16 @@ func (t *TarPipe) initReadFrom(n uint64) {
PodName: t.src.PodName,
},
// TODO: Improve error messages by first testing if 'tar' is present in the container?
Command: []string{"tar", "hcf", "-", t.src.File.String()},
Command: []string{"tar", "cfh", "-", t.src.File.String()},
Executor: &exec.DefaultRemoteExecutor{},
}
if t.o.MaxTries != 0 {
options.Command = []string{"sh", "-c", fmt.Sprintf("tar hcf - %s | tail -c+%d", t.src.File, n)}
options.Command = []string{"sh", "-c", fmt.Sprintf("tar cfh - %s | tail -c+%d", t.src.File, n)}
}
go func() {
defer t.outStream.Close()
t.o.execute(options)
cmdutil.CheckErr(t.o.execute(options))
}()
}
@@ -230,16 +280,91 @@ func (t *TarPipe) Read(p []byte) (n int, err error) {
return
}
func makeTar(src localPath, dest remotePath, writer io.Writer) error {
// TODO: use compression here?
tarWriter := tar.NewWriter(writer)
defer tarWriter.Close()
srcPath := src.Clean()
destPath := dest.Clean()
return recursiveTar(srcPath.Dir(), srcPath.Base(), destPath.Dir(), destPath.Base(), tarWriter)
}
func recursiveTar(srcDir, srcFile localPath, destDir, destFile remotePath, tw *tar.Writer) error {
matchedPaths, err := srcDir.Join(srcFile).Glob()
if err != nil {
return err
}
for _, fpath := range matchedPaths {
stat, err := os.Lstat(fpath)
if err != nil {
return err
}
if stat.IsDir() {
files, err := os.ReadDir(fpath)
if err != nil {
return err
}
if len(files) == 0 {
//case empty directory
hdr, _ := tar.FileInfoHeader(stat, fpath)
hdr.Name = destFile.String()
if err := tw.WriteHeader(hdr); err != nil {
return err
}
}
for _, f := range files {
if err := recursiveTar(srcDir, srcFile.Join(newLocalPath(f.Name())),
destDir, destFile.Join(newRemotePath(f.Name())), tw); err != nil {
return err
}
}
return nil
} else if stat.Mode()&os.ModeSymlink != 0 {
//case soft link
hdr, _ := tar.FileInfoHeader(stat, fpath)
target, err := os.Readlink(fpath)
if err != nil {
return err
}
hdr.Linkname = target
hdr.Name = destFile.String()
if err := tw.WriteHeader(hdr); err != nil {
return err
}
} else {
//case regular file or other file type like pipe
hdr, err := tar.FileInfoHeader(stat, fpath)
if err != nil {
return err
}
hdr.Name = destFile.String()
if err := tw.WriteHeader(hdr); err != nil {
return err
}
f, err := os.Open(fpath)
if err != nil {
return err
}
defer f.Close()
if _, err := io.Copy(tw, f); err != nil {
return err
}
return f.Close()
}
}
return nil
}
func (o *CopyOptions) untarAll(prefix string, dest localPath, reader io.Reader) error {
// TODO: use compression here?
tarReader := tar.NewReader(reader)
var link []tar.Header
// basic file information
//mode := header.FileInfo().Mode()
// header.Name is a name of the REMOTE file, so we need to create
// a remotePath so that it goes through appropriate processing related
// with cleaning remote paths
var fun = func(headerName string) localPath {
var linkList []tar.Header
var genDstFilename = func(headerName string) localPath {
return dest.Join(newRemotePath(headerName[len(prefix):]))
}
for {
@@ -260,50 +385,47 @@ func (o *CopyOptions) untarAll(prefix string, dest localPath, reader io.Reader)
return fmt.Errorf("tar contents corrupted")
}
destFileName := fun(header.Name)
// header.Name is a name of the REMOTE file, so we need to create
// a remotePath so that it goes through appropriate processing related
// with cleaning remote paths
destFileName := genDstFilename(header.Name)
if !isRelative(dest, destFileName) {
fmt.Fprintf(o.IOStreams.ErrOut, "warning: file %q is outside target destination, skipping\n", destFileName)
continue
}
if err = os.MkdirAll(destFileName.Dir().String(), 0755); err != nil {
if err := os.MkdirAll(destFileName.Dir().String(), 0755); err != nil {
return err
}
if header.FileInfo().IsDir() {
if err = os.MkdirAll(destFileName.String(), 0755); err != nil {
if err := os.MkdirAll(destFileName.String(), 0755); err != nil {
return err
}
continue
}
if header.FileInfo().Mode()&os.ModeSymlink != 0 {
fmt.Fprintf(o.IOStreams.ErrOut, "warning: skipping symlink: %q -> %q\n", destFileName, header.Linkname)
continue
}
var outFile *os.File
outFile, err = os.Create(destFileName.String())
outFile, err := os.Create(destFileName.String())
if err != nil {
return err
}
var n int64
if n, err = io.Copy(outFile, tarReader); err != nil {
defer outFile.Close()
if _, err := io.Copy(outFile, tarReader); err != nil {
return err
}
if n != header.Size {
return fmt.Errorf("file size not equal to written, writen: %d, real: %d", n, header.Size)
}
if err = outFile.Close(); err != nil {
if err := outFile.Close(); err != nil {
return err
}
// means link to another file
// all file became into normal file, this means linkList to another file, do it later
if header.Linkname != "" {
link = append(link, *header)
linkList = append(linkList, *header)
}
}
for _, f := range link {
err := process(link, f, fun)
// handle linked file
for _, f := range linkList {
err := copyFromLink(linkList, f, genDstFilename)
if err != nil {
return err
}

0
pkg/util/cp/filespec.go → pkg/cp/filespec.go
View File

36
pkg/cp/untar.go Normal file
View File

@@ -0,0 +1,36 @@
package cp
import (
"archive/tar"
"io"
"os"
)
// copy from another real file
func copyFromLink(fileHeaderList []tar.Header, currFile tar.Header, genDstFilename func(headerName string) localPath) error {
for _, t := range fileHeaderList {
if t.Name == currFile.Linkname {
// handle it recursive if linkA --> linkB --> originFile
return copyFromLink(fileHeaderList, t, genDstFilename)
}
}
var err error
var r, w *os.File
// read from origin file
r, err = os.OpenFile(genDstFilename(currFile.Linkname).String(), os.O_RDONLY, 0644)
if err != nil {
return err
}
// write to current file
w, err = os.OpenFile(genDstFilename(currFile.Name).String(), os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0644)
if err != nil {
return err
}
_, err = io.Copy(w, r)
if closeErr := w.Close(); closeErr != nil && err == nil {
err = closeErr
}
return err
}

2
pkg/dev/convert.go
View File

@@ -26,9 +26,9 @@ import (
"k8s.io/kubectl/pkg/cmd/util"
"github.com/wencaiwulue/kubevpn/pkg/config"
"github.com/wencaiwulue/kubevpn/pkg/cp"
"github.com/wencaiwulue/kubevpn/pkg/dns"
util2 "github.com/wencaiwulue/kubevpn/pkg/util"
"github.com/wencaiwulue/kubevpn/pkg/util/cp"
)
type RunConfig struct {

31
pkg/util/cp/untar.go
View File

@@ -1,31 +0,0 @@
package cp
import (
"archive/tar"
"io"
"os"
)
func process(header []tar.Header, f tar.Header, dir func(headerName string) localPath) error {
for _, t := range header {
if t.Name == f.Linkname {
return process(header, t, dir)
}
}
abs := dir(f.Name)
linked := dir(f.Linkname)
wf, err := os.OpenFile(abs.String(), os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0644)
if err != nil {
panic(err)
}
read, err := os.OpenFile(linked.String(), os.O_RDONLY, 0644)
if err != nil {
panic(err)
}
_, err = io.Copy(wf, read)
if closeErr := wf.Close(); closeErr != nil && err == nil {
err = closeErr
}
return err
}