Follow symlinks in Preview sites when archiving directories

RELEASE-NOTES.txt

@@ -1,6 +1,7 @@
 Unreleased
 ==========
 * Miscellaneous security improvements #1411
+* Follow symlinks when creating preview sites #1447
 
 1.5.2
 =====

cli/lib/archive.ts

@@ -14,6 +14,7 @@ export async function createArchive(
 		const output = fs.createWriteStream( archivePath );
 		const archive = archiver( 'zip', {
 			zlib: { level: ZIP_COMPRESSION_LEVEL },
+			followSymlinks: true,
 		} );
 
 		output.on( 'close', () => {

cli/lib/tests/archive.test.ts

@@ -48,7 +48,10 @@ describe( 'Archive Module', () => {
 			const result = await createArchive( mockSiteFolder, mockArchivePath );
 
 			expect( fs.createWriteStream ).toHaveBeenCalledWith( mockArchivePath );
-			expect( archiver ).toHaveBeenCalledWith( 'zip', { zlib: { level: 9 } } );
+			expect( archiver ).toHaveBeenCalledWith( 'zip', {
+				followSymlinks: true,
+				zlib: { level: 9 },
+			} );
 			expect( mockArchiver.pipe ).toHaveBeenCalledWith( mockWriteStream );
 			expect( path.join ).toHaveBeenCalledWith( mockSiteFolder, 'wp-content' );
 			expect( mockArchiver.directory ).toHaveBeenCalledWith(

patches/@types+archiver+6.0.2.patch

@@ -0,0 +1,12 @@
+diff --git a/node_modules/@types/archiver/index.d.ts b/node_modules/@types/archiver/index.d.ts
+index 00829ac..fab29c9 100644
+--- a/node_modules/@types/archiver/index.d.ts
++++ b/node_modules/@types/archiver/index.d.ts
+@@ -106,6 +106,7 @@ declare namespace archiver {
+
+     interface CoreOptions {
+         statConcurrency?: number | undefined;
++        followSymlinks?: boolean
+     }
+
+     interface TransformOptions {

patches/archiver+6.0.1.patch

@@ -0,0 +1,22 @@
+diff --git a/node_modules/archiver/lib/core.js b/node_modules/archiver/lib/core.js
+index 7c0a74d..c70117b 100644
+--- a/node_modules/archiver/lib/core.js
++++ b/node_modules/archiver/lib/core.js
+@@ -631,7 +631,8 @@ Archiver.prototype.directory = function(dirpath, destpath, data) {
+
+   var globOptions = {
+     stat: true,
+-    dot: true
++    dot: true,
++    follow: this.options.followSymlinks
+   };
+
+   function onGlobEnd() {
+@@ -922,6 +923,7 @@ module.exports = Archiver;
+  * @global
+  * @property {Number} [statConcurrency=4] Sets the number of workers used to
+  * process the internal fs stat queue.
++ * @property {Boolean} [followSymLinks=false] Sets whether to follow symlinks.
+  */
+
+ /**