text: /*-
   * Copyright (c) 2003-2007 Tim Kientzle
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
   * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
   * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  #include "test.h"
  __FBSDID("$FreeBSD: src/usr.bin/tar/test/test_strip_components.c,v 1.2 2008/11/10 05:24:13 kientzle Exp $");
  
  DEFINE_TEST(test_strip_components)
  {
  	assertMakeDir("d0", 0755);
  	assertChdir("d0");
  	assertMakeDir("d1", 0755);
  	assertMakeDir("d1/d2", 0755);
  	assertMakeDir("d1/d2/d3", 0755);
  	assertMakeFile("d1/d2/f1", 0644, "");
  	assertMakeHardlink("l1", "d1/d2/f1");
  	assertMakeHardlink("d1/l2", "d1/d2/f1");
  	if (canSymlink()) {
  		assertMakeSymlink("s1", "d1/d2/f1");
  		assertMakeSymlink("d1/s2", "d2/f1");
  	}
  	assertChdir("..");
  
  	/*
  	 * Test 1: Strip components when extracting archives.
  	 */
  	if (canSymlink())
  		assertEqualInt(0, systemf("%s -cf test.tar d0/l1 d0/s1 d0/d1",
  		    testprog));
  	else
  		assertEqualInt(0, systemf("%s -cf test.tar d0/l1 d0/d1",
  		    testprog));
  
  	assertMakeDir("target", 0755);
  	assertEqualInt(0, systemf("%s -x -C target --strip-components 2 "
  	    "-f test.tar", testprog));
  
  	failure("d0/ is too short and should not get restored");
  	assertFileNotExists("target/d0");
  	failure("d0/d1/ is too short and should not get restored");
  	assertFileNotExists("target/d1");
  	failure("d0/s1 is too short and should not get restored");
  	assertFileNotExists("target/s1");
  	failure("d0/d1/s2 is a symlink to something that won't be extracted");
  	/* If platform supports symlinks, target/s2 is a broken symlink. */
  	/* If platform does not support symlink, target/s2 doesn't exist. */
  	assertFileNotExists("target/s2");
  	if (canSymlink())
  		assertIsSymlink("target/s2", "d2/f1");
  	failure("d0/d1/d2 should be extracted");
  	assertIsDir("target/d2", -1);
  
  	/*
  	 * Test 1b: Strip components extracting archives involving hardlinks.
  	 *
  	 * This next is a complicated case.  d0/l1, d0/d1/l2, and
  	 * d0/d1/d2/f1 are all hardlinks to the same file; d0/l1 can't
  	 * be extracted with --strip-components=2 and the other two
  	 * can.  Remember that tar normally stores the first file with
  	 * a body and the other as hardlink entries to the first
  	 * appearance.  So the final result depends on the order in
  	 * which these three names get archived.  If d0/l1 is first,
  	 * none of the three can be restored.  If either of the longer
  	 * names are first, then the two longer ones can both be
  	 * restored.  Note that the "tar -cf" command above explicitly
  	 * lists d0/l1 before d0/d1.
  	 *
  	 * It may be worth extending this test to exercise other
  	 * archiving orders.
  	 *
  	 * Of course, this is all totally different for cpio and newc
  	 * formats because the hardlink management is different.
  	 * TODO: Rename this to test_strip_components_tar and create
  	 * parallel tests for cpio and newc formats.
  	 */
  	failure("d0/l1 is too short and should not get restored");
  	assertFileNotExists("target/l1");
  	failure("d0/d1/l2 is a hardlink to file whose name was too short");
  	assertFileNotExists("target/l2");
  	failure("d0/d1/d2/f1 is a hardlink to file whose name was too short");
  	assertFileNotExists("target/d2/f1");
  
  	/*
  	 * Test 2: Strip components when creating archives.
  	 */
  	if (canSymlink())
  		assertEqualInt(0, systemf("%s --strip-components 2 -cf test2.tar "
  					"d0/l1 d0/s1 d0/d1", testprog));
  	else
  		assertEqualInt(0, systemf("%s --strip-components 2 -cf test2.tar "
  					"d0/l1 d0/d1", testprog));
  
  	assertMakeDir("target2", 0755);
  	assertEqualInt(0, systemf("%s -x -C target2 -f test2.tar", testprog));
  
  	failure("d0/ is too short and should not have been archived");
  	assertFileNotExists("target2/d0");
  	failure("d0/d1/ is too short and should not have been archived");
  	assertFileNotExists("target2/d1");
  	failure("d0/s1 is too short and should not get restored");
  	assertFileNotExists("target/s1");
  	/* If platform supports symlinks, target/s2 is included. */
  	if (canSymlink()) {
  		failure("d0/d1/s2 is a symlink to something included in archive");
  		assertIsSymlink("target2/s2", "d2/f1");
  	}
  	failure("d0/d1/d2 should be archived");
  	assertIsDir("target2/d2", -1);
  
  	/*
  	 * Test 2b: Strip components creating archives involving hardlinks.
  	 */
  	failure("d0/l1 is too short and should not have been archived");
  	assertFileNotExists("target/l1");
  	failure("d0/d1/l2 is a hardlink to file whose name was too short");
  	assertFileNotExists("target/l2");
  	failure("d0/d1/d2/f1 is a hardlink to file whose name was too short");
  	assertFileNotExists("target/d2/f1");
  }
  