Merge pull request #17825 from hashicorp/jbardin/go-getter-update

update go-getter

vendor/github.com/hashicorp/go-getter/README.md

@@ -232,6 +232,9 @@ The options below are available to all protocols:
   * `checksum` - Checksum to verify the downloaded file or archive. See
     the entire section on checksumming above for format and more details.
 
+  * `filename` - When in file download mode, allows specifying the name of the
+    downloaded file on disk. Has no effect in directory mode.
+
 ### Local Files (`file`)
 
 None
@@ -282,7 +285,7 @@ be used automatically.
   * `aws_access_key_id` (required) - Minio access key.
   * `aws_access_key_secret` (required) - Minio access key secret.
   * `region` (optional - defaults to us-east-1) - Region identifier to use.
-  * `version` (optional - fefaults to Minio default) - Configuration file format.
+  * `version` (optional - defaults to Minio default) - Configuration file format.
 
 #### S3 Bucket Examples
 

vendor/github.com/hashicorp/go-getter/client.go

@@ -17,6 +17,7 @@ import (
 	"strings"
 
 	urlhelper "github.com/hashicorp/go-getter/helper/url"
+	"github.com/hashicorp/go-safetemp"
 )
 
 // Client is a client for downloading things.
@@ -100,17 +101,14 @@ func (c *Client) Get() error {
 	dst := c.Dst
 	src, subDir := SourceDirSubdir(src)
 	if subDir != "" {
-		tmpDir, err := ioutil.TempDir("", "tf")
+		td, tdcloser, err := safetemp.Dir("", "getter")
 		if err != nil {
 			return err
 		}
-		if err := os.RemoveAll(tmpDir); err != nil {
+		defer tdcloser.Close()
-			return err
-		}
-		defer os.RemoveAll(tmpDir)
 
 		realDst = dst
-		dst = tmpDir
+		dst = td
 	}
 
 	u, err := urlhelper.Parse(src)
@@ -232,7 +230,18 @@ func (c *Client) Get() error {
 		// Destination is the base name of the URL path in "any" mode when
 		// a file source is detected.
 		if mode == ClientModeFile {
-			dst = filepath.Join(dst, filepath.Base(u.Path))
+			filename := filepath.Base(u.Path)
+
+			// Determine if we have a custom file name
+			if v := q.Get("filename"); v != "" {
+				// Delete the query parameter if we have it.
+				q.Del("filename")
+				u.RawQuery = q.Encode()
+
+				filename = v
+			}
+
+			dst = filepath.Join(dst, filename)
 		}
 	}
 

vendor/github.com/hashicorp/go-getter/decompress.go

@@ -1,7 +1,15 @@
 package getter
 
+import (
+	"strings"
+)
+
 // Decompressor defines the interface that must be implemented to add
 // support for decompressing a type.
+//
+// Important: if you're implementing a decompressor, please use the
+// containsDotDot helper in this file to ensure that files can't be
+// decompressed outside of the specified directory.
 type Decompressor interface {
 	// Decompress should decompress src to dst. dir specifies whether dst
 	// is a directory or single file. src is guaranteed to be a single file
@@ -31,3 +39,20 @@ func init() {
 		"zip":     new(ZipDecompressor),
 	}
 }
+
+// containsDotDot checks if the filepath value v contains a ".." entry.
+// This will check filepath components by splitting along / or \. This
+// function is copied directly from the Go net/http implementation.
+func containsDotDot(v string) bool {
+	if !strings.Contains(v, "..") {
+		return false
+	}
+	for _, ent := range strings.FieldsFunc(v, isSlashRune) {
+		if ent == ".." {
+			return true
+		}
+	}
+	return false
+}
+
+func isSlashRune(r rune) bool { return r == '/' || r == '\\' }

vendor/github.com/hashicorp/go-getter/decompress_tar.go

@@ -13,6 +13,7 @@ import (
 func untar(input io.Reader, dst, src string, dir bool) error {
 	tarR := tar.NewReader(input)
 	done := false
+	dirHdrs := []*tar.Header{}
 	for {
 		hdr, err := tarR.Next()
 		if err == io.EOF {
@@ -21,7 +22,7 @@ func untar(input io.Reader, dst, src string, dir bool) error {
 				return fmt.Errorf("empty archive: %s", src)
 			}
 
-			return nil
+			break
 		}
 		if err != nil {
 			return err
@@ -34,6 +35,11 @@ func untar(input io.Reader, dst, src string, dir bool) error {
 
 		path := dst
 		if dir {
+			// Disallow parent traversal
+			if containsDotDot(hdr.Name) {
+				return fmt.Errorf("entry contains '..': %s", hdr.Name)
+			}
+
 			path = filepath.Join(path, hdr.Name)
 		}
 
@@ -47,6 +53,10 @@ func untar(input io.Reader, dst, src string, dir bool) error {
 				return err
 			}
 
+			// Record the directory information so that we may set its attributes
+			// after all files have been extracted
+			dirHdrs = append(dirHdrs, hdr)
+
 			continue
 		} else {
 			// There is no ordering guarantee that a file in a directory is
@@ -84,7 +94,23 @@ func untar(input io.Reader, dst, src string, dir bool) error {
 		if err := os.Chmod(path, hdr.FileInfo().Mode()); err != nil {
 			return err
 		}
+
+		// Set the access and modification time
+		if err := os.Chtimes(path, hdr.AccessTime, hdr.ModTime); err != nil {
+			return err
 		}
+	}
+
+	// Adding a file or subdirectory changes the mtime of a directory
+	// We therefore wait until we've extracted everything and then set the mtime and atime attributes
+	for _, dirHdr := range dirHdrs {
+		path := filepath.Join(dst, dirHdr.Name)
+		if err := os.Chtimes(path, dirHdr.AccessTime, dirHdr.ModTime); err != nil {
+			return err
+		}
+	}
+
+	return nil
 }
 
 // tarDecompressor is an implementation of Decompressor that can

vendor/github.com/hashicorp/go-getter/decompress_testing.go

@@ -11,6 +11,7 @@ import (
 	"runtime"
 	"sort"
 	"strings"
+	"time"
 
 	"github.com/mitchellh/go-testing-interface"
 )
@@ -22,6 +23,7 @@ type TestDecompressCase struct {
 	Err     bool     // Err is whether we expect an error or not
 	DirList []string // DirList is the list of files for Dir mode
 	FileMD5 string   // FileMD5 is the expected MD5 for a single file
+	Mtime *time.Time // Mtime is the optionally expected mtime for a single file (or all files if in Dir mode)
 }
 
 // TestDecompressor is a helper function for testing generic decompressors.
@@ -68,6 +70,14 @@ func TestDecompressor(t testing.T, d Decompressor, cases []TestDecompressCase) {
 					}
 				}
 
+				if tc.Mtime != nil {
+					actual := fi.ModTime()
+					expected := *tc.Mtime
+					if actual != expected {
+						t.Fatalf("err %s: expected mtime '%s' for %s, got '%s'", tc.Input, expected.String(), dst, actual.String())
+					}
+				}
+
 				return
 			}
 
@@ -84,6 +94,21 @@ func TestDecompressor(t testing.T, d Decompressor, cases []TestDecompressCase) {
 			if !reflect.DeepEqual(actual, expected) {
 				t.Fatalf("bad %s\n\n%#v\n\n%#v", tc.Input, actual, expected)
 			}
+			// Check for correct atime/mtime
+			for _, dir := range actual {
+				path := filepath.Join(dst, dir)
+				if tc.Mtime != nil {
+					fi, err := os.Stat(path)
+					if err != nil {
+						t.Fatalf("err: %s", err)
+					}
+					actual := fi.ModTime()
+					expected := *tc.Mtime
+					if actual != expected {
+						t.Fatalf("err %s: expected mtime '%s' for %s, got '%s'", tc.Input, expected.String(), path, actual.String())
+					}
+				}
+			}
 		}()
 	}
 }

vendor/github.com/hashicorp/go-getter/decompress_zip.go

@@ -42,6 +42,11 @@ func (d *ZipDecompressor) Decompress(dst, src string, dir bool) error {
 	for _, f := range zipR.File {
 		path := dst
 		if dir {
+			// Disallow parent traversal
+			if containsDotDot(f.Name) {
+				return fmt.Errorf("entry contains '..': %s", f.Name)
+			}
+
 			path = filepath.Join(path, f.Name)
 		}
 

vendor/github.com/hashicorp/go-getter/get_git.go

@@ -11,6 +11,7 @@ import (
 	"strings"
 
 	urlhelper "github.com/hashicorp/go-getter/helper/url"
+	"github.com/hashicorp/go-safetemp"
 	"github.com/hashicorp/go-version"
 )
 
@@ -105,13 +106,11 @@ func (g *GitGetter) Get(dst string, u *url.URL) error {
 // GetFile for Git doesn't support updating at this time. It will download
 // the file every time.
 func (g *GitGetter) GetFile(dst string, u *url.URL) error {
-	td, err := ioutil.TempDir("", "getter-git")
+	td, tdcloser, err := safetemp.Dir("", "getter")
 	if err != nil {
 		return err
 	}
-	if err := os.RemoveAll(td); err != nil {
+	defer tdcloser.Close()
-		return err
-	}
 
 	// Get the filename, and strip the filename from the URL so we can
 	// just get the repository directly.

vendor/github.com/hashicorp/go-getter/get_hg.go

@@ -2,7 +2,6 @@ package getter
 
 import (
 	"fmt"
-	"io/ioutil"
 	"net/url"
 	"os"
 	"os/exec"
@@ -10,6 +9,7 @@ import (
 	"runtime"
 
 	urlhelper "github.com/hashicorp/go-getter/helper/url"
+	"github.com/hashicorp/go-safetemp"
 )
 
 // HgGetter is a Getter implementation that will download a module from
@@ -64,13 +64,13 @@ func (g *HgGetter) Get(dst string, u *url.URL) error {
 // GetFile for Hg doesn't support updating at this time. It will download
 // the file every time.
 func (g *HgGetter) GetFile(dst string, u *url.URL) error {
-	td, err := ioutil.TempDir("", "getter-hg")
+	// Create a temporary directory to store the full source. This has to be
+	// a non-existent directory.
+	td, tdcloser, err := safetemp.Dir("", "getter")
 	if err != nil {
 		return err
 	}
-	if err := os.RemoveAll(td); err != nil {
+	defer tdcloser.Close()
-		return err
-	}
 
 	// Get the filename, and strip the filename from the URL so we can
 	// just get the repository directly.

vendor/github.com/hashicorp/go-getter/get_http.go

@@ -4,12 +4,13 @@ import (
 	"encoding/xml"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net/http"
 	"net/url"
 	"os"
 	"path/filepath"
 	"strings"
+
+	"github.com/hashicorp/go-safetemp"
 )
 
 // HttpGetter is a Getter implementation that will download from an HTTP
@@ -135,25 +136,27 @@ func (g *HttpGetter) GetFile(dst string, u *url.URL) error {
 	if err != nil {
 		return err
 	}
-	defer f.Close()
 
-	_, err = io.Copy(f, resp.Body)
+	n, err := io.Copy(f, resp.Body)
+	if err == nil && n < resp.ContentLength {
+		err = io.ErrShortWrite
+	}
+	if err1 := f.Close(); err == nil {
+		err = err1
+	}
 	return err
 }
 
 // getSubdir downloads the source into the destination, but with
 // the proper subdir.
 func (g *HttpGetter) getSubdir(dst, source, subDir string) error {
-	// Create a temporary directory to store the full source
+	// Create a temporary directory to store the full source. This has to be
-	td, err := ioutil.TempDir("", "tf")
+	// a non-existent directory.
+	td, tdcloser, err := safetemp.Dir("", "getter")
 	if err != nil {
 		return err
 	}
-	defer os.RemoveAll(td)
+	defer tdcloser.Close()
-
-	// We have to create a subdirectory that doesn't exist for the file
-	// getter to work.
-	td = filepath.Join(td, "data")
 
 	// Download that into the given directory
 	if err := Get(td, source); err != nil {

vendor/github.com/hashicorp/go-safetemp/LICENSE

@@ -0,0 +1,362 @@
+Mozilla Public License, version 2.0
+
+1. Definitions
+
+1.1. "Contributor"
+
+     means each individual or legal entity that creates, contributes to the
+     creation of, or owns Covered Software.
+
+1.2. "Contributor Version"
+
+     means the combination of the Contributions of others (if any) used by a
+     Contributor and that particular Contributor's Contribution.
+
+1.3. "Contribution"
+
+     means Covered Software of a particular Contributor.
+
+1.4. "Covered Software"
+
+     means Source Code Form to which the initial Contributor has attached the
+     notice in Exhibit A, the Executable Form of such Source Code Form, and
+     Modifications of such Source Code Form, in each case including portions
+     thereof.
+
+1.5. "Incompatible With Secondary Licenses"
+     means
+
+     a. that the initial Contributor has attached the notice described in
+        Exhibit B to the Covered Software; or
+
+     b. that the Covered Software was made available under the terms of
+        version 1.1 or earlier of the License, but not also under the terms of
+        a Secondary License.
+
+1.6. "Executable Form"
+
+     means any form of the work other than Source Code Form.
+
+1.7. "Larger Work"
+
+     means a work that combines Covered Software with other material, in a
+     separate file or files, that is not Covered Software.
+
+1.8. "License"
+
+     means this document.
+
+1.9. "Licensable"
+
+     means having the right to grant, to the maximum extent possible, whether
+     at the time of the initial grant or subsequently, any and all of the
+     rights conveyed by this License.
+
+1.10. "Modifications"
+
+     means any of the following:
+
+     a. any file in Source Code Form that results from an addition to,
+        deletion from, or modification of the contents of Covered Software; or
+
+     b. any new file in Source Code Form that contains any Covered Software.
+
+1.11. "Patent Claims" of a Contributor
+
+      means any patent claim(s), including without limitation, method,
+      process, and apparatus claims, in any patent Licensable by such
+      Contributor that would be infringed, but for the grant of the License,
+      by the making, using, selling, offering for sale, having made, import,
+      or transfer of either its Contributions or its Contributor Version.
+
+1.12. "Secondary License"
+
+      means either the GNU General Public License, Version 2.0, the GNU Lesser
+      General Public License, Version 2.1, the GNU Affero General Public
+      License, Version 3.0, or any later versions of those licenses.
+
+1.13. "Source Code Form"
+
+      means the form of the work preferred for making modifications.
+
+1.14. "You" (or "Your")
+
+      means an individual or a legal entity exercising rights under this
+      License. For legal entities, "You" includes any entity that controls, is
+      controlled by, or is under common control with You. For purposes of this
+      definition, "control" means (a) the power, direct or indirect, to cause
+      the direction or management of such entity, whether by contract or
+      otherwise, or (b) ownership of more than fifty percent (50%) of the
+      outstanding shares or beneficial ownership of such entity.
+
+
+2. License Grants and Conditions
+
+2.1. Grants
+
+     Each Contributor hereby grants You a world-wide, royalty-free,
+     non-exclusive license:
+
+     a. under intellectual property rights (other than patent or trademark)
+        Licensable by such Contributor to use, reproduce, make available,
+        modify, display, perform, distribute, and otherwise exploit its
+        Contributions, either on an unmodified basis, with Modifications, or
+        as part of a Larger Work; and
+
+     b. under Patent Claims of such Contributor to make, use, sell, offer for
+        sale, have made, import, and otherwise transfer either its
+        Contributions or its Contributor Version.
+
+2.2. Effective Date
+
+     The licenses granted in Section 2.1 with respect to any Contribution
+     become effective for each Contribution on the date the Contributor first
+     distributes such Contribution.
+
+2.3. Limitations on Grant Scope
+
+     The licenses granted in this Section 2 are the only rights granted under
+     this License. No additional rights or licenses will be implied from the
+     distribution or licensing of Covered Software under this License.
+     Notwithstanding Section 2.1(b) above, no patent license is granted by a
+     Contributor:
+
+     a. for any code that a Contributor has removed from Covered Software; or
+
+     b. for infringements caused by: (i) Your and any other third party's
+        modifications of Covered Software, or (ii) the combination of its
+        Contributions with other software (except as part of its Contributor
+        Version); or
+
+     c. under Patent Claims infringed by Covered Software in the absence of
+        its Contributions.
+
+     This License does not grant any rights in the trademarks, service marks,
+     or logos of any Contributor (except as may be necessary to comply with
+     the notice requirements in Section 3.4).
+
+2.4. Subsequent Licenses
+
+     No Contributor makes additional grants as a result of Your choice to
+     distribute the Covered Software under a subsequent version of this
+     License (see Section 10.2) or under the terms of a Secondary License (if
+     permitted under the terms of Section 3.3).
+
+2.5. Representation
+
+     Each Contributor represents that the Contributor believes its
+     Contributions are its original creation(s) or it has sufficient rights to
+     grant the rights to its Contributions conveyed by this License.
+
+2.6. Fair Use
+
+     This License is not intended to limit any rights You have under
+     applicable copyright doctrines of fair use, fair dealing, or other
+     equivalents.
+
+2.7. Conditions
+
+     Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted in
+     Section 2.1.
+
+
+3. Responsibilities
+
+3.1. Distribution of Source Form
+
+     All distribution of Covered Software in Source Code Form, including any
+     Modifications that You create or to which You contribute, must be under
+     the terms of this License. You must inform recipients that the Source
+     Code Form of the Covered Software is governed by the terms of this
+     License, and how they can obtain a copy of this License. You may not
+     attempt to alter or restrict the recipients' rights in the Source Code
+     Form.
+
+3.2. Distribution of Executable Form
+
+     If You distribute Covered Software in Executable Form then:
+
+     a. such Covered Software must also be made available in Source Code Form,
+        as described in Section 3.1, and You must inform recipients of the
+        Executable Form how they can obtain a copy of such Source Code Form by
+        reasonable means in a timely manner, at a charge no more than the cost
+        of distribution to the recipient; and
+
+     b. You may distribute such Executable Form under the terms of this
+        License, or sublicense it under different terms, provided that the
+        license for the Executable Form does not attempt to limit or alter the
+        recipients' rights in the Source Code Form under this License.
+
+3.3. Distribution of a Larger Work
+
+     You may create and distribute a Larger Work under terms of Your choice,
+     provided that You also comply with the requirements of this License for
+     the Covered Software. If the Larger Work is a combination of Covered
+     Software with a work governed by one or more Secondary Licenses, and the
+     Covered Software is not Incompatible With Secondary Licenses, this
+     License permits You to additionally distribute such Covered Software
+     under the terms of such Secondary License(s), so that the recipient of
+     the Larger Work may, at their option, further distribute the Covered
+     Software under the terms of either this License or such Secondary
+     License(s).
+
+3.4. Notices
+
+     You may not remove or alter the substance of any license notices
+     (including copyright notices, patent notices, disclaimers of warranty, or
+     limitations of liability) contained within the Source Code Form of the
+     Covered Software, except that You may alter any license notices to the
+     extent required to remedy known factual inaccuracies.
+
+3.5. Application of Additional Terms
+
+     You may choose to offer, and to charge a fee for, warranty, support,
+     indemnity or liability obligations to one or more recipients of Covered
+     Software. However, You may do so only on Your own behalf, and not on
+     behalf of any Contributor. You must make it absolutely clear that any
+     such warranty, support, indemnity, or liability obligation is offered by
+     You alone, and You hereby agree to indemnify every Contributor for any
+     liability incurred by such Contributor as a result of warranty, support,
+     indemnity or liability terms You offer. You may include additional
+     disclaimers of warranty and limitations of liability specific to any
+     jurisdiction.
+
+4. Inability to Comply Due to Statute or Regulation
+
+   If it is impossible for You to comply with any of the terms of this License
+   with respect to some or all of the Covered Software due to statute,
+   judicial order, or regulation then You must: (a) comply with the terms of
+   this License to the maximum extent possible; and (b) describe the
+   limitations and the code they affect. Such description must be placed in a
+   text file included with all distributions of the Covered Software under
+   this License. Except to the extent prohibited by statute or regulation,
+   such description must be sufficiently detailed for a recipient of ordinary
+   skill to be able to understand it.
+
+5. Termination
+
+5.1. The rights granted under this License will terminate automatically if You
+     fail to comply with any of its terms. However, if You become compliant,
+     then the rights granted under this License from a particular Contributor
+     are reinstated (a) provisionally, unless and until such Contributor
+     explicitly and finally terminates Your grants, and (b) on an ongoing
+     basis, if such Contributor fails to notify You of the non-compliance by
+     some reasonable means prior to 60 days after You have come back into
+     compliance. Moreover, Your grants from a particular Contributor are
+     reinstated on an ongoing basis if such Contributor notifies You of the
+     non-compliance by some reasonable means, this is the first time You have
+     received notice of non-compliance with this License from such
+     Contributor, and You become compliant prior to 30 days after Your receipt
+     of the notice.
+
+5.2. If You initiate litigation against any entity by asserting a patent
+     infringement claim (excluding declaratory judgment actions,
+     counter-claims, and cross-claims) alleging that a Contributor Version
+     directly or indirectly infringes any patent, then the rights granted to
+     You by any and all Contributors for the Covered Software under Section
+     2.1 of this License shall terminate.
+
+5.3. In the event of termination under Sections 5.1 or 5.2 above, all end user
+     license agreements (excluding distributors and resellers) which have been
+     validly granted by You or Your distributors under this License prior to
+     termination shall survive termination.
+
+6. Disclaimer of Warranty
+
+   Covered Software is provided under this License on an "as is" basis,
+   without warranty of any kind, either expressed, implied, or statutory,
+   including, without limitation, warranties that the Covered Software is free
+   of defects, merchantable, fit for a particular purpose or non-infringing.
+   The entire risk as to the quality and performance of the Covered Software
+   is with You. Should any Covered Software prove defective in any respect,
+   You (not any Contributor) assume the cost of any necessary servicing,
+   repair, or correction. This disclaimer of warranty constitutes an essential
+   part of this License. No use of  any Covered Software is authorized under
+   this License except under this disclaimer.
+
+7. Limitation of Liability
+
+   Under no circumstances and under no legal theory, whether tort (including
+   negligence), contract, or otherwise, shall any Contributor, or anyone who
+   distributes Covered Software as permitted above, be liable to You for any
+   direct, indirect, special, incidental, or consequential damages of any
+   character including, without limitation, damages for lost profits, loss of
+   goodwill, work stoppage, computer failure or malfunction, or any and all
+   other commercial damages or losses, even if such party shall have been
+   informed of the possibility of such damages. This limitation of liability
+   shall not apply to liability for death or personal injury resulting from
+   such party's negligence to the extent applicable law prohibits such
+   limitation. Some jurisdictions do not allow the exclusion or limitation of
+   incidental or consequential damages, so this exclusion and limitation may
+   not apply to You.
+
+8. Litigation
+
+   Any litigation relating to this License may be brought only in the courts
+   of a jurisdiction where the defendant maintains its principal place of
+   business and such litigation shall be governed by laws of that
+   jurisdiction, without reference to its conflict-of-law provisions. Nothing
+   in this Section shall prevent a party's ability to bring cross-claims or
+   counter-claims.
+
+9. Miscellaneous
+
+   This License represents the complete agreement concerning the subject
+   matter hereof. If any provision of this License is held to be
+   unenforceable, such provision shall be reformed only to the extent
+   necessary to make it enforceable. Any law or regulation which provides that
+   the language of a contract shall be construed against the drafter shall not
+   be used to construe this License against a Contributor.
+
+
+10. Versions of the License
+
+10.1. New Versions
+
+      Mozilla Foundation is the license steward. Except as provided in Section
+      10.3, no one other than the license steward has the right to modify or
+      publish new versions of this License. Each version will be given a
+      distinguishing version number.
+
+10.2. Effect of New Versions
+
+      You may distribute the Covered Software under the terms of the version
+      of the License under which You originally received the Covered Software,
+      or under the terms of any subsequent version published by the license
+      steward.
+
+10.3. Modified Versions
+
+      If you create software not governed by this License, and you want to
+      create a new license for such software, you may create and use a
+      modified version of this License if you rename the license and remove
+      any references to the name of the license steward (except to note that
+      such modified license differs from this License).
+
+10.4. Distributing Source Code Form that is Incompatible With Secondary
+      Licenses If You choose to distribute Source Code Form that is
+      Incompatible With Secondary Licenses under the terms of this version of
+      the License, the notice described in Exhibit B of this License must be
+      attached.
+
+Exhibit A - Source Code Form License Notice
+
+      This Source Code Form is subject to the
+      terms of the Mozilla Public License, v.
+      2.0. If a copy of the MPL was not
+      distributed with this file, You can
+      obtain one at
+      http://mozilla.org/MPL/2.0/.
+
+If it is not possible or desirable to put the notice in a particular file,
+then You may include the notice in a location (such as a LICENSE file in a
+relevant directory) where a recipient would be likely to look for such a
+notice.
+
+You may add additional accurate notices of copyright ownership.
+
+Exhibit B - "Incompatible With Secondary Licenses" Notice
+
+      This Source Code Form is "Incompatible
+      With Secondary Licenses", as defined by
+      the Mozilla Public License, v. 2.0.

vendor/github.com/hashicorp/go-safetemp/README.md

@@ -0,0 +1,10 @@
+# go-safetemp
+[![Godoc](https://godoc.org/github.com/hashcorp/go-safetemp?status.svg)](https://godoc.org/github.com/hashicorp/go-safetemp)
+
+Functions for safely working with temporary directories and files.
+
+## Why?
+
+The Go standard library provides the excellent `ioutil` package for
+working with temporary directories and files. This library builds on top
+of that to provide safe abstractions above that.

vendor/github.com/hashicorp/go-safetemp/safetemp.go

@@ -0,0 +1,40 @@
+package safetemp
+
+import (
+	"io"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+)
+
+// Dir creates a new temporary directory that isn't yet created. This
+// can be used with calls that expect a non-existent directory.
+//
+// The directory is created as a child of a temporary directory created
+// within the directory dir starting with prefix. The temporary directory
+// returned is always named "temp". The parent directory has the specified
+// prefix.
+//
+// The returned io.Closer should be used to clean up the returned directory.
+// This will properly remove the returned directory and any other temporary
+// files created.
+//
+// If an error is returned, the Closer does not need to be called (and will
+// be nil).
+func Dir(dir, prefix string) (string, io.Closer, error) {
+	// Create the temporary directory
+	td, err := ioutil.TempDir(dir, prefix)
+	if err != nil {
+		return "", nil, err
+	}
+
+	return filepath.Join(td, "temp"), pathCloser(td), nil
+}
+
+// pathCloser implements io.Closer to remove the given path on Close.
+type pathCloser string
+
+// Close deletes this path.
+func (p pathCloser) Close() error {
+	return os.RemoveAll(string(p))
+}

vendor/vendor.json

@@ -1591,10 +1591,10 @@
 			"versionExact": "master"
 		},
 		{
-			"checksumSHA1": "9VcI9QGCShWIUIL187qRd4sxwb8=",
+			"checksumSHA1": "fvjFEz5PBN1m9ALWf9UuLgTFWLg=",
 			"path": "github.com/hashicorp/go-getter",
-			"revision": "a686900cb3753aa644dc4812be91ceaf9fdd3b98",
+			"revision": "90bb99a48d86cf1d327cee9968f7428f90ba13c1",
-			"revisionTime": "2017-09-22T19:29:48Z",
+			"revisionTime": "2018-03-27T01:01:14Z",
 			"version": "master",
 			"versionExact": "master"
 		},
@@ -1637,6 +1637,12 @@
 			"revision": "6bb64b370b90e7ef1fa532be9e591a81c3493e00",
 			"revisionTime": "2016-05-03T14:34:40Z"
 		},
+		{
+			"checksumSHA1": "CduvzBFfTv77nhjtXPGdIjQQLMI=",
+			"path": "github.com/hashicorp/go-safetemp",
+			"revision": "b1a1dbde6fdc11e3ae79efd9039009e22d4ae240",
+			"revisionTime": "2018-03-26T21:11:50Z"
+		},
 		{
 			"checksumSHA1": "85XUnluYJL7F55ptcwdmN8eSOsk=",
 			"path": "github.com/hashicorp/go-uuid",