651 lines
17 KiB
Go
651 lines
17 KiB
Go
package main
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import (
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"bytes"
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"fmt"
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"io/ioutil"
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"os"
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"os/exec"
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"path"
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"path/filepath"
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"strings"
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"github.com/go-check/check"
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)
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const (
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cpTestPathParent = "/some"
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cpTestPath = "/some/path"
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cpTestName = "test"
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cpFullPath = "/some/path/test"
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cpContainerContents = "holla, i am the container"
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cpHostContents = "hello, i am the host"
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)
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// Test for #5656
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// Check that garbage paths don't escape the container's rootfs
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func (s *DockerSuite) TestCpGarbagePath(c *check.C) {
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out, exitCode := dockerCmd(c, "run", "-d", "busybox", "/bin/sh", "-c", "mkdir -p '"+cpTestPath+"' && echo -n '"+cpContainerContents+"' > "+cpFullPath)
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if exitCode != 0 {
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c.Fatal("failed to create a container", out)
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}
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cleanedContainerID := strings.TrimSpace(out)
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out, _ = dockerCmd(c, "wait", cleanedContainerID)
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if strings.TrimSpace(out) != "0" {
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c.Fatal("failed to set up container", out)
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}
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if err := os.MkdirAll(cpTestPath, os.ModeDir); err != nil {
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c.Fatal(err)
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}
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hostFile, err := os.Create(cpFullPath)
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if err != nil {
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c.Fatal(err)
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}
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defer hostFile.Close()
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defer os.RemoveAll(cpTestPathParent)
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fmt.Fprintf(hostFile, "%s", cpHostContents)
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tmpdir, err := ioutil.TempDir("", "docker-integration")
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if err != nil {
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c.Fatal(err)
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}
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tmpname := filepath.Join(tmpdir, cpTestName)
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defer os.RemoveAll(tmpdir)
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path := path.Join("../../../../../../../../../../../../", cpFullPath)
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_, _ = dockerCmd(c, "cp", cleanedContainerID+":"+path, tmpdir)
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file, _ := os.Open(tmpname)
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defer file.Close()
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test, err := ioutil.ReadAll(file)
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if err != nil {
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c.Fatal(err)
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}
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if string(test) == cpHostContents {
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c.Errorf("output matched host file -- garbage path can escape container rootfs")
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}
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if string(test) != cpContainerContents {
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c.Errorf("output doesn't match the input for garbage path")
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}
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}
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// Check that relative paths are relative to the container's rootfs
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func (s *DockerSuite) TestCpRelativePath(c *check.C) {
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out, exitCode := dockerCmd(c, "run", "-d", "busybox", "/bin/sh", "-c", "mkdir -p '"+cpTestPath+"' && echo -n '"+cpContainerContents+"' > "+cpFullPath)
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if exitCode != 0 {
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c.Fatal("failed to create a container", out)
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}
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cleanedContainerID := strings.TrimSpace(out)
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out, _ = dockerCmd(c, "wait", cleanedContainerID)
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if strings.TrimSpace(out) != "0" {
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c.Fatal("failed to set up container", out)
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}
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if err := os.MkdirAll(cpTestPath, os.ModeDir); err != nil {
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c.Fatal(err)
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}
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hostFile, err := os.Create(cpFullPath)
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if err != nil {
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c.Fatal(err)
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}
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defer hostFile.Close()
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defer os.RemoveAll(cpTestPathParent)
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fmt.Fprintf(hostFile, "%s", cpHostContents)
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tmpdir, err := ioutil.TempDir("", "docker-integration")
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if err != nil {
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c.Fatal(err)
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}
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tmpname := filepath.Join(tmpdir, cpTestName)
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defer os.RemoveAll(tmpdir)
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var relPath string
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if path.IsAbs(cpFullPath) {
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// normally this is `filepath.Rel("/", cpFullPath)` but we cannot
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// get this unix-path manipulation on windows with filepath.
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relPath = cpFullPath[1:]
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} else {
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c.Fatalf("path %s was assumed to be an absolute path", cpFullPath)
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}
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_, _ = dockerCmd(c, "cp", cleanedContainerID+":"+relPath, tmpdir)
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file, _ := os.Open(tmpname)
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defer file.Close()
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test, err := ioutil.ReadAll(file)
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if err != nil {
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c.Fatal(err)
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}
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if string(test) == cpHostContents {
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c.Errorf("output matched host file -- relative path can escape container rootfs")
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}
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if string(test) != cpContainerContents {
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c.Errorf("output doesn't match the input for relative path")
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}
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}
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// Check that absolute paths are relative to the container's rootfs
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func (s *DockerSuite) TestCpAbsolutePath(c *check.C) {
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out, exitCode := dockerCmd(c, "run", "-d", "busybox", "/bin/sh", "-c", "mkdir -p '"+cpTestPath+"' && echo -n '"+cpContainerContents+"' > "+cpFullPath)
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if exitCode != 0 {
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c.Fatal("failed to create a container", out)
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}
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cleanedContainerID := strings.TrimSpace(out)
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out, _ = dockerCmd(c, "wait", cleanedContainerID)
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if strings.TrimSpace(out) != "0" {
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c.Fatal("failed to set up container", out)
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}
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if err := os.MkdirAll(cpTestPath, os.ModeDir); err != nil {
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c.Fatal(err)
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}
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hostFile, err := os.Create(cpFullPath)
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if err != nil {
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c.Fatal(err)
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}
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defer hostFile.Close()
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defer os.RemoveAll(cpTestPathParent)
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fmt.Fprintf(hostFile, "%s", cpHostContents)
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tmpdir, err := ioutil.TempDir("", "docker-integration")
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if err != nil {
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c.Fatal(err)
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}
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tmpname := filepath.Join(tmpdir, cpTestName)
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defer os.RemoveAll(tmpdir)
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path := cpFullPath
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_, _ = dockerCmd(c, "cp", cleanedContainerID+":"+path, tmpdir)
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file, _ := os.Open(tmpname)
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defer file.Close()
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test, err := ioutil.ReadAll(file)
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if err != nil {
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c.Fatal(err)
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}
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if string(test) == cpHostContents {
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c.Errorf("output matched host file -- absolute path can escape container rootfs")
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}
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if string(test) != cpContainerContents {
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c.Errorf("output doesn't match the input for absolute path")
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}
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}
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// Test for #5619
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// Check that absolute symlinks are still relative to the container's rootfs
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func (s *DockerSuite) TestCpAbsoluteSymlink(c *check.C) {
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out, exitCode := dockerCmd(c, "run", "-d", "busybox", "/bin/sh", "-c", "mkdir -p '"+cpTestPath+"' && echo -n '"+cpContainerContents+"' > "+cpFullPath+" && ln -s "+cpFullPath+" container_path")
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if exitCode != 0 {
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c.Fatal("failed to create a container", out)
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}
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cleanedContainerID := strings.TrimSpace(out)
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out, _ = dockerCmd(c, "wait", cleanedContainerID)
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if strings.TrimSpace(out) != "0" {
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c.Fatal("failed to set up container", out)
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}
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if err := os.MkdirAll(cpTestPath, os.ModeDir); err != nil {
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c.Fatal(err)
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}
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hostFile, err := os.Create(cpFullPath)
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if err != nil {
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c.Fatal(err)
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}
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defer hostFile.Close()
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defer os.RemoveAll(cpTestPathParent)
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fmt.Fprintf(hostFile, "%s", cpHostContents)
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tmpdir, err := ioutil.TempDir("", "docker-integration")
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if err != nil {
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c.Fatal(err)
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}
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tmpname := filepath.Join(tmpdir, cpTestName)
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defer os.RemoveAll(tmpdir)
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path := path.Join("/", "container_path")
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_, _ = dockerCmd(c, "cp", cleanedContainerID+":"+path, tmpdir)
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file, _ := os.Open(tmpname)
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defer file.Close()
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test, err := ioutil.ReadAll(file)
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if err != nil {
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c.Fatal(err)
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}
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if string(test) == cpHostContents {
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c.Errorf("output matched host file -- absolute symlink can escape container rootfs")
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}
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if string(test) != cpContainerContents {
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c.Errorf("output doesn't match the input for absolute symlink")
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}
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}
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// Test for #5619
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// Check that symlinks which are part of the resource path are still relative to the container's rootfs
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func (s *DockerSuite) TestCpSymlinkComponent(c *check.C) {
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out, exitCode := dockerCmd(c, "run", "-d", "busybox", "/bin/sh", "-c", "mkdir -p '"+cpTestPath+"' && echo -n '"+cpContainerContents+"' > "+cpFullPath+" && ln -s "+cpTestPath+" container_path")
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if exitCode != 0 {
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c.Fatal("failed to create a container", out)
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}
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cleanedContainerID := strings.TrimSpace(out)
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out, _ = dockerCmd(c, "wait", cleanedContainerID)
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if strings.TrimSpace(out) != "0" {
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c.Fatal("failed to set up container", out)
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}
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if err := os.MkdirAll(cpTestPath, os.ModeDir); err != nil {
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c.Fatal(err)
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}
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hostFile, err := os.Create(cpFullPath)
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if err != nil {
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c.Fatal(err)
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}
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defer hostFile.Close()
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defer os.RemoveAll(cpTestPathParent)
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fmt.Fprintf(hostFile, "%s", cpHostContents)
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tmpdir, err := ioutil.TempDir("", "docker-integration")
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if err != nil {
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c.Fatal(err)
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}
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tmpname := filepath.Join(tmpdir, cpTestName)
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defer os.RemoveAll(tmpdir)
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path := path.Join("/", "container_path", cpTestName)
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_, _ = dockerCmd(c, "cp", cleanedContainerID+":"+path, tmpdir)
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file, _ := os.Open(tmpname)
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defer file.Close()
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test, err := ioutil.ReadAll(file)
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if err != nil {
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c.Fatal(err)
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}
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if string(test) == cpHostContents {
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c.Errorf("output matched host file -- symlink path component can escape container rootfs")
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}
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if string(test) != cpContainerContents {
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c.Errorf("output doesn't match the input for symlink path component")
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}
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}
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// Check that cp with unprivileged user doesn't return any error
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func (s *DockerSuite) TestCpUnprivilegedUser(c *check.C) {
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testRequires(c, UnixCli) // uses chmod/su: not available on windows
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out, exitCode := dockerCmd(c, "run", "-d", "busybox", "/bin/sh", "-c", "touch "+cpTestName)
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if exitCode != 0 {
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c.Fatal("failed to create a container", out)
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}
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cleanedContainerID := strings.TrimSpace(out)
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out, _ = dockerCmd(c, "wait", cleanedContainerID)
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if strings.TrimSpace(out) != "0" {
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c.Fatal("failed to set up container", out)
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}
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tmpdir, err := ioutil.TempDir("", "docker-integration")
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if err != nil {
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c.Fatal(err)
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}
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defer os.RemoveAll(tmpdir)
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if err = os.Chmod(tmpdir, 0777); err != nil {
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c.Fatal(err)
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}
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path := cpTestName
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_, _, err = runCommandWithOutput(exec.Command("su", "unprivilegeduser", "-c", dockerBinary+" cp "+cleanedContainerID+":"+path+" "+tmpdir))
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if err != nil {
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c.Fatalf("couldn't copy with unprivileged user: %s:%s %s", cleanedContainerID, path, err)
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}
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}
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func (s *DockerSuite) TestCpSpecialFiles(c *check.C) {
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testRequires(c, SameHostDaemon)
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outDir, err := ioutil.TempDir("", "cp-test-special-files")
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if err != nil {
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c.Fatal(err)
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}
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defer os.RemoveAll(outDir)
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out, exitCode := dockerCmd(c, "run", "-d", "busybox", "/bin/sh", "-c", "touch /foo")
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if exitCode != 0 {
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c.Fatal("failed to create a container", out)
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}
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cleanedContainerID := strings.TrimSpace(out)
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out, _ = dockerCmd(c, "wait", cleanedContainerID)
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if strings.TrimSpace(out) != "0" {
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c.Fatal("failed to set up container", out)
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}
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// Copy actual /etc/resolv.conf
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_, _ = dockerCmd(c, "cp", cleanedContainerID+":/etc/resolv.conf", outDir)
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expected, err := ioutil.ReadFile("/var/lib/docker/containers/" + cleanedContainerID + "/resolv.conf")
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actual, err := ioutil.ReadFile(outDir + "/resolv.conf")
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if !bytes.Equal(actual, expected) {
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c.Fatalf("Expected copied file to be duplicate of the container resolvconf")
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}
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// Copy actual /etc/hosts
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_, _ = dockerCmd(c, "cp", cleanedContainerID+":/etc/hosts", outDir)
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expected, err = ioutil.ReadFile("/var/lib/docker/containers/" + cleanedContainerID + "/hosts")
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actual, err = ioutil.ReadFile(outDir + "/hosts")
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if !bytes.Equal(actual, expected) {
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c.Fatalf("Expected copied file to be duplicate of the container hosts")
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}
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// Copy actual /etc/resolv.conf
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_, _ = dockerCmd(c, "cp", cleanedContainerID+":/etc/hostname", outDir)
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expected, err = ioutil.ReadFile("/var/lib/docker/containers/" + cleanedContainerID + "/hostname")
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actual, err = ioutil.ReadFile(outDir + "/hostname")
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if !bytes.Equal(actual, expected) {
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c.Fatalf("Expected copied file to be duplicate of the container resolvconf")
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}
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}
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func (s *DockerSuite) TestCpVolumePath(c *check.C) {
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testRequires(c, SameHostDaemon)
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tmpDir, err := ioutil.TempDir("", "cp-test-volumepath")
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if err != nil {
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c.Fatal(err)
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}
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defer os.RemoveAll(tmpDir)
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outDir, err := ioutil.TempDir("", "cp-test-volumepath-out")
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if err != nil {
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c.Fatal(err)
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}
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defer os.RemoveAll(outDir)
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_, err = os.Create(tmpDir + "/test")
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if err != nil {
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c.Fatal(err)
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}
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out, exitCode := dockerCmd(c, "run", "-d", "-v", "/foo", "-v", tmpDir+"/test:/test", "-v", tmpDir+":/baz", "busybox", "/bin/sh", "-c", "touch /foo/bar")
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if exitCode != 0 {
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c.Fatal("failed to create a container", out)
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}
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cleanedContainerID := strings.TrimSpace(out)
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out, _ = dockerCmd(c, "wait", cleanedContainerID)
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if strings.TrimSpace(out) != "0" {
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c.Fatal("failed to set up container", out)
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}
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// Copy actual volume path
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_, _ = dockerCmd(c, "cp", cleanedContainerID+":/foo", outDir)
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stat, err := os.Stat(outDir + "/foo")
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if err != nil {
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c.Fatal(err)
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}
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if !stat.IsDir() {
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c.Fatal("expected copied content to be dir")
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}
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stat, err = os.Stat(outDir + "/foo/bar")
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if err != nil {
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c.Fatal(err)
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}
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if stat.IsDir() {
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c.Fatal("Expected file `bar` to be a file")
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}
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// Copy file nested in volume
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_, _ = dockerCmd(c, "cp", cleanedContainerID+":/foo/bar", outDir)
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stat, err = os.Stat(outDir + "/bar")
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if err != nil {
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c.Fatal(err)
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}
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if stat.IsDir() {
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c.Fatal("Expected file `bar` to be a file")
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}
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// Copy Bind-mounted dir
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_, _ = dockerCmd(c, "cp", cleanedContainerID+":/baz", outDir)
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stat, err = os.Stat(outDir + "/baz")
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if err != nil {
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c.Fatal(err)
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}
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if !stat.IsDir() {
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c.Fatal("Expected `baz` to be a dir")
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}
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// Copy file nested in bind-mounted dir
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_, _ = dockerCmd(c, "cp", cleanedContainerID+":/baz/test", outDir)
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fb, err := ioutil.ReadFile(outDir + "/baz/test")
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if err != nil {
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c.Fatal(err)
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}
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fb2, err := ioutil.ReadFile(tmpDir + "/test")
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if err != nil {
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c.Fatal(err)
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}
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if !bytes.Equal(fb, fb2) {
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c.Fatalf("Expected copied file to be duplicate of bind-mounted file")
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}
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// Copy bind-mounted file
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_, _ = dockerCmd(c, "cp", cleanedContainerID+":/test", outDir)
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fb, err = ioutil.ReadFile(outDir + "/test")
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if err != nil {
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c.Fatal(err)
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}
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fb2, err = ioutil.ReadFile(tmpDir + "/test")
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if err != nil {
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c.Fatal(err)
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}
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if !bytes.Equal(fb, fb2) {
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c.Fatalf("Expected copied file to be duplicate of bind-mounted file")
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}
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}
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func (s *DockerSuite) TestCpToDot(c *check.C) {
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out, exitCode := dockerCmd(c, "run", "-d", "busybox", "/bin/sh", "-c", "echo lololol > /test")
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if exitCode != 0 {
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c.Fatal("failed to create a container", out)
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}
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cleanedContainerID := strings.TrimSpace(out)
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out, _ = dockerCmd(c, "wait", cleanedContainerID)
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if strings.TrimSpace(out) != "0" {
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c.Fatal("failed to set up container", out)
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}
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|
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tmpdir, err := ioutil.TempDir("", "docker-integration")
|
|
if err != nil {
|
|
c.Fatal(err)
|
|
}
|
|
defer os.RemoveAll(tmpdir)
|
|
cwd, err := os.Getwd()
|
|
if err != nil {
|
|
c.Fatal(err)
|
|
}
|
|
defer os.Chdir(cwd)
|
|
if err := os.Chdir(tmpdir); err != nil {
|
|
c.Fatal(err)
|
|
}
|
|
_, _ = dockerCmd(c, "cp", cleanedContainerID+":/test", ".")
|
|
content, err := ioutil.ReadFile("./test")
|
|
if string(content) != "lololol\n" {
|
|
c.Fatalf("Wrong content in copied file %q, should be %q", content, "lololol\n")
|
|
}
|
|
}
|
|
|
|
func (s *DockerSuite) TestCpToStdout(c *check.C) {
|
|
out, exitCode := dockerCmd(c, "run", "-d", "busybox", "/bin/sh", "-c", "echo lololol > /test")
|
|
if exitCode != 0 {
|
|
c.Fatalf("failed to create a container:%s\n", out)
|
|
}
|
|
|
|
cID := strings.TrimSpace(out)
|
|
|
|
out, _ = dockerCmd(c, "wait", cID)
|
|
if strings.TrimSpace(out) != "0" {
|
|
c.Fatalf("failed to set up container:%s\n", out)
|
|
}
|
|
|
|
out, _, err := runCommandPipelineWithOutput(
|
|
exec.Command(dockerBinary, "cp", cID+":/test", "-"),
|
|
exec.Command("tar", "-vtf", "-"))
|
|
|
|
if err != nil {
|
|
c.Fatalf("Failed to run commands: %s", err)
|
|
}
|
|
|
|
if !strings.Contains(out, "test") || !strings.Contains(out, "-rw") {
|
|
c.Fatalf("Missing file from tar TOC:\n%s", out)
|
|
}
|
|
}
|
|
|
|
func (s *DockerSuite) TestCpNameHasColon(c *check.C) {
|
|
testRequires(c, SameHostDaemon)
|
|
|
|
out, exitCode := dockerCmd(c, "run", "-d", "busybox", "/bin/sh", "-c", "echo lololol > /te:s:t")
|
|
if exitCode != 0 {
|
|
c.Fatal("failed to create a container", out)
|
|
}
|
|
|
|
cleanedContainerID := strings.TrimSpace(out)
|
|
|
|
out, _ = dockerCmd(c, "wait", cleanedContainerID)
|
|
if strings.TrimSpace(out) != "0" {
|
|
c.Fatal("failed to set up container", out)
|
|
}
|
|
|
|
tmpdir, err := ioutil.TempDir("", "docker-integration")
|
|
if err != nil {
|
|
c.Fatal(err)
|
|
}
|
|
defer os.RemoveAll(tmpdir)
|
|
_, _ = dockerCmd(c, "cp", cleanedContainerID+":/te:s:t", tmpdir)
|
|
content, err := ioutil.ReadFile(tmpdir + "/te:s:t")
|
|
if string(content) != "lololol\n" {
|
|
c.Fatalf("Wrong content in copied file %q, should be %q", content, "lololol\n")
|
|
}
|
|
}
|
|
|
|
func (s *DockerSuite) TestCopyAndRestart(c *check.C) {
|
|
expectedMsg := "hello"
|
|
out, err := exec.Command(dockerBinary, "run", "-d", "busybox", "echo", expectedMsg).CombinedOutput()
|
|
if err != nil {
|
|
c.Fatal(string(out), err)
|
|
}
|
|
id := strings.TrimSpace(string(out))
|
|
|
|
if out, err = exec.Command(dockerBinary, "wait", id).CombinedOutput(); err != nil {
|
|
c.Fatalf("unable to wait for container: %s", err)
|
|
}
|
|
|
|
status := strings.TrimSpace(string(out))
|
|
if status != "0" {
|
|
c.Fatalf("container exited with status %s", status)
|
|
}
|
|
|
|
tmpDir, err := ioutil.TempDir("", "test-docker-restart-after-copy-")
|
|
if err != nil {
|
|
c.Fatalf("unable to make temporary directory: %s", err)
|
|
}
|
|
defer os.RemoveAll(tmpDir)
|
|
|
|
if _, err = exec.Command(dockerBinary, "cp", fmt.Sprintf("%s:/etc/issue", id), tmpDir).CombinedOutput(); err != nil {
|
|
c.Fatalf("unable to copy from busybox container: %s", err)
|
|
}
|
|
|
|
if out, err = exec.Command(dockerBinary, "start", "-a", id).CombinedOutput(); err != nil {
|
|
c.Fatalf("unable to start busybox container after copy: %s - %s", err, out)
|
|
}
|
|
|
|
msg := strings.TrimSpace(string(out))
|
|
if msg != expectedMsg {
|
|
c.Fatalf("expected %q but got %q", expectedMsg, msg)
|
|
}
|
|
}
|
|
|
|
func (s *DockerSuite) TestCopyCreatedContainer(c *check.C) {
|
|
out, err := exec.Command(dockerBinary, "create", "--name", "test_cp", "-v", "/test", "busybox").CombinedOutput()
|
|
if err != nil {
|
|
c.Fatalf(string(out), err)
|
|
}
|
|
|
|
tmpDir, err := ioutil.TempDir("", "test")
|
|
if err != nil {
|
|
c.Fatalf("unable to make temporary directory: %s", err)
|
|
}
|
|
defer os.RemoveAll(tmpDir)
|
|
out, err = exec.Command(dockerBinary, "cp", "test_cp:/bin/sh", tmpDir).CombinedOutput()
|
|
if err != nil {
|
|
c.Fatalf(string(out), err)
|
|
}
|
|
}
|