#!/bin/sh

global test_description := ''apply to deeper directory without getting fooled with symlink''
source ./test-lib.sh

test_expect_success setup '

	mkdir -p arch/i386/boot arch/x86_64 &&
	test_write_lines 1 2 3 4 5 >arch/i386/boot/Makefile &&
	test_ln_s_add ../i386/boot arch/x86_64/boot &&
	git add . &&
	test_tick &&
	git commit -m initial &&
	git branch test &&

	rm arch/x86_64/boot &&
	mkdir arch/x86_64/boot &&
	test_write_lines 2 3 4 5 6 >arch/x86_64/boot/Makefile &&
	git add . &&
	test_tick &&
	git commit -a -m second &&

	git format-patch --binary -1 --stdout >test.patch

'

test_expect_success apply '

	git checkout test &&
	git diff --exit-code test &&
	git diff --exit-code --cached test &&
	git apply --index test.patch

'

test_expect_success 'check result' '

	git diff --exit-code master &&
	git diff --exit-code --cached master &&
	test_tick &&
	git commit -m replay &&
	T1=$(git rev-parse "master^{tree}") &&
	T2=$(git rev-parse "HEAD^{tree}") &&
	test "z$T1" = "z$T2"

'

test_expect_success SYMLINKS 'do not read from beyond symbolic link' '
	git reset --hard &&
	mkdir -p arch/x86_64/dir &&
	>arch/x86_64/dir/file &&
	git add arch/x86_64/dir/file &&
	echo line >arch/x86_64/dir/file &&
	git diff >patch &&
	git reset --hard &&

	mkdir arch/i386/dir &&
	>arch/i386/dir/file &&
	ln -s ../i386/dir arch/x86_64/dir &&

	test_must_fail git apply patch &&
	test_must_fail git apply --cached patch &&
	test_must_fail git apply --index patch

'

test_expect_success SYMLINKS 'do not follow symbolic link (setup)' '

	rm -rf arch/i386/dir arch/x86_64/dir &&
	git reset --hard &&
	ln -s ../i386/dir arch/x86_64/dir &&
	git add arch/x86_64/dir &&
	git diff HEAD >add_symlink.patch &&
	git reset --hard &&

	mkdir arch/x86_64/dir &&
	>arch/x86_64/dir/file &&
	git add arch/x86_64/dir/file &&
	git diff HEAD >add_file.patch &&
	git diff -R HEAD >del_file.patch &&
	git reset --hard &&
	rm -fr arch/x86_64/dir &&

	cat add_symlink.patch add_file.patch >patch &&
	cat add_symlink.patch del_file.patch >tricky_del &&

	mkdir arch/i386/dir
'

test_expect_success SYMLINKS 'do not follow symbolic link (same input)' '

	# same input creates a confusing symbolic link
	test_must_fail git apply patch 2>error-wt &&
	test_i18ngrep "beyond a symbolic link" error-wt &&
	test_path_is_missing arch/x86_64/dir &&
	test_path_is_missing arch/i386/dir/file &&

	test_must_fail git apply --index patch 2>error-ix &&
	test_i18ngrep "beyond a symbolic link" error-ix &&
	test_path_is_missing arch/x86_64/dir &&
	test_path_is_missing arch/i386/dir/file &&
	test_must_fail git ls-files --error-unmatch arch/x86_64/dir &&
	test_must_fail git ls-files --error-unmatch arch/i386/dir &&

	test_must_fail git apply --cached patch 2>error-ct &&
	test_i18ngrep "beyond a symbolic link" error-ct &&
	test_must_fail git ls-files --error-unmatch arch/x86_64/dir &&
	test_must_fail git ls-files --error-unmatch arch/i386/dir &&

	>arch/i386/dir/file &&
	git add arch/i386/dir/file &&

	test_must_fail git apply tricky_del &&
	test_path_is_file arch/i386/dir/file &&

	test_must_fail git apply --index tricky_del &&
	test_path_is_file arch/i386/dir/file &&
	test_must_fail git ls-files --error-unmatch arch/x86_64/dir &&
	git ls-files --error-unmatch arch/i386/dir &&

	test_must_fail git apply --cached tricky_del &&
	test_must_fail git ls-files --error-unmatch arch/x86_64/dir &&
	git ls-files --error-unmatch arch/i386/dir
'

test_expect_success SYMLINKS 'do not follow symbolic link (existing)' '

	# existing symbolic link
	git reset --hard &&
	ln -s ../i386/dir arch/x86_64/dir &&
	git add arch/x86_64/dir &&

	test_must_fail git apply add_file.patch 2>error-wt-add &&
	test_i18ngrep "beyond a symbolic link" error-wt-add &&
	test_path_is_missing arch/i386/dir/file &&

	mkdir arch/i386/dir &&
	>arch/i386/dir/file &&
	test_must_fail git apply del_file.patch 2>error-wt-del &&
	test_i18ngrep "beyond a symbolic link" error-wt-del &&
	test_path_is_file arch/i386/dir/file &&
	rm arch/i386/dir/file &&

	test_must_fail git apply --index add_file.patch 2>error-ix-add &&
	test_i18ngrep "beyond a symbolic link" error-ix-add &&
	test_path_is_missing arch/i386/dir/file &&
	test_must_fail git ls-files --error-unmatch arch/i386/dir &&

	test_must_fail git apply --cached add_file.patch 2>error-ct-file &&
	test_i18ngrep "beyond a symbolic link" error-ct-file &&
	test_must_fail git ls-files --error-unmatch arch/i386/dir
'

test_done
(CommandList
  children: [
    (Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (LhsName name:test_description)
          op: Equal
          rhs: {(SQ <"apply to deeper directory without getting fooled with symlink">)}
          spids: [4]
        )
      ]
      spids: [4]
    )
    (C {(.)} {(./test-lib.sh)})
    (C {(test_expect_success)} {(setup)} 
      {
        (SQ <"\n"> <"\n"> <"\tmkdir -p arch/i386/boot arch/x86_64 &&\n"> 
          <"\ttest_write_lines 1 2 3 4 5 >arch/i386/boot/Makefile &&\n"> <"\ttest_ln_s_add ../i386/boot arch/x86_64/boot &&\n"> <"\tgit add . &&\n"> <"\ttest_tick &&\n"> 
          <"\tgit commit -m initial &&\n"> <"\tgit branch test &&\n"> <"\n"> <"\trm arch/x86_64/boot &&\n"> <"\tmkdir arch/x86_64/boot &&\n"> 
          <"\ttest_write_lines 2 3 4 5 6 >arch/x86_64/boot/Makefile &&\n"> <"\tgit add . &&\n"> <"\ttest_tick &&\n"> <"\tgit commit -a -m second &&\n"> <"\n"> 
          <"\tgit format-patch --binary -1 --stdout >test.patch\n"> <"\n">
        )
      }
    )
    (C {(test_expect_success)} {(apply)} 
      {
        (SQ <"\n"> <"\n"> <"\tgit checkout test &&\n"> <"\tgit diff --exit-code test &&\n"> 
          <"\tgit diff --exit-code --cached test &&\n"> <"\tgit apply --index test.patch\n"> <"\n">
        )
      }
    )
    (C {(test_expect_success)} {(SQ <"check result">)} 
      {
        (SQ <"\n"> <"\n"> <"\tgit diff --exit-code master &&\n"> 
          <"\tgit diff --exit-code --cached master &&\n"> <"\ttest_tick &&\n"> <"\tgit commit -m replay &&\n"> <"\tT1=$(git rev-parse \"master^{tree}\") &&\n"> 
          <"\tT2=$(git rev-parse \"HEAD^{tree}\") &&\n"> <"\ttest \"z$T1\" = \"z$T2\"\n"> <"\n">
        )
      }
    )
    (C {(test_expect_success)} {(SYMLINKS)} {(SQ <"do not read from beyond symbolic link">)} 
      {
        (SQ <"\n"> <"\tgit reset --hard &&\n"> <"\tmkdir -p arch/x86_64/dir &&\n"> 
          <"\t>arch/x86_64/dir/file &&\n"> <"\tgit add arch/x86_64/dir/file &&\n"> <"\techo line >arch/x86_64/dir/file &&\n"> 
          <"\tgit diff >patch &&\n"> <"\tgit reset --hard &&\n"> <"\n"> <"\tmkdir arch/i386/dir &&\n"> <"\t>arch/i386/dir/file &&\n"> 
          <"\tln -s ../i386/dir arch/x86_64/dir &&\n"> <"\n"> <"\ttest_must_fail git apply patch &&\n"> <"\ttest_must_fail git apply --cached patch &&\n"> 
          <"\ttest_must_fail git apply --index patch\n"> <"\n">
        )
      }
    )
    (C {(test_expect_success)} {(SYMLINKS)} {(SQ <"do not follow symbolic link (setup)">)} 
      {
        (SQ <"\n"> <"\n"> <"\trm -rf arch/i386/dir arch/x86_64/dir &&\n"> <"\tgit reset --hard &&\n"> 
          <"\tln -s ../i386/dir arch/x86_64/dir &&\n"> <"\tgit add arch/x86_64/dir &&\n"> <"\tgit diff HEAD >add_symlink.patch &&\n"> 
          <"\tgit reset --hard &&\n"> <"\n"> <"\tmkdir arch/x86_64/dir &&\n"> <"\t>arch/x86_64/dir/file &&\n"> 
          <"\tgit add arch/x86_64/dir/file &&\n"> <"\tgit diff HEAD >add_file.patch &&\n"> <"\tgit diff -R HEAD >del_file.patch &&\n"> 
          <"\tgit reset --hard &&\n"> <"\trm -fr arch/x86_64/dir &&\n"> <"\n"> <"\tcat add_symlink.patch add_file.patch >patch &&\n"> 
          <"\tcat add_symlink.patch del_file.patch >tricky_del &&\n"> <"\n"> <"\tmkdir arch/i386/dir\n">
        )
      }
    )
    (C {(test_expect_success)} {(SYMLINKS)} {(SQ <"do not follow symbolic link (same input)">)} 
      {
        (SQ <"\n"> <"\n"> <"\t# same input creates a confusing symbolic link\n"> 
          <"\ttest_must_fail git apply patch 2>error-wt &&\n"> <"\ttest_i18ngrep \"beyond a symbolic link\" error-wt &&\n"> 
          <"\ttest_path_is_missing arch/x86_64/dir &&\n"> <"\ttest_path_is_missing arch/i386/dir/file &&\n"> <"\n"> 
          <"\ttest_must_fail git apply --index patch 2>error-ix &&\n"> <"\ttest_i18ngrep \"beyond a symbolic link\" error-ix &&\n"> 
          <"\ttest_path_is_missing arch/x86_64/dir &&\n"> <"\ttest_path_is_missing arch/i386/dir/file &&\n"> 
          <"\ttest_must_fail git ls-files --error-unmatch arch/x86_64/dir &&\n"> <"\ttest_must_fail git ls-files --error-unmatch arch/i386/dir &&\n"> <"\n"> 
          <"\ttest_must_fail git apply --cached patch 2>error-ct &&\n"> <"\ttest_i18ngrep \"beyond a symbolic link\" error-ct &&\n"> 
          <"\ttest_must_fail git ls-files --error-unmatch arch/x86_64/dir &&\n"> <"\ttest_must_fail git ls-files --error-unmatch arch/i386/dir &&\n"> <"\n"> 
          <"\t>arch/i386/dir/file &&\n"> <"\tgit add arch/i386/dir/file &&\n"> <"\n"> <"\ttest_must_fail git apply tricky_del &&\n"> 
          <"\ttest_path_is_file arch/i386/dir/file &&\n"> <"\n"> <"\ttest_must_fail git apply --index tricky_del &&\n"> 
          <"\ttest_path_is_file arch/i386/dir/file &&\n"> <"\ttest_must_fail git ls-files --error-unmatch arch/x86_64/dir &&\n"> 
          <"\tgit ls-files --error-unmatch arch/i386/dir &&\n"> <"\n"> <"\ttest_must_fail git apply --cached tricky_del &&\n"> 
          <"\ttest_must_fail git ls-files --error-unmatch arch/x86_64/dir &&\n"> <"\tgit ls-files --error-unmatch arch/i386/dir\n">
        )
      }
    )
    (C {(test_expect_success)} {(SYMLINKS)} {(SQ <"do not follow symbolic link (existing)">)} 
      {
        (SQ <"\n"> <"\n"> <"\t# existing symbolic link\n"> <"\tgit reset --hard &&\n"> 
          <"\tln -s ../i386/dir arch/x86_64/dir &&\n"> <"\tgit add arch/x86_64/dir &&\n"> <"\n"> 
          <"\ttest_must_fail git apply add_file.patch 2>error-wt-add &&\n"> <"\ttest_i18ngrep \"beyond a symbolic link\" error-wt-add &&\n"> 
          <"\ttest_path_is_missing arch/i386/dir/file &&\n"> <"\n"> <"\tmkdir arch/i386/dir &&\n"> <"\t>arch/i386/dir/file &&\n"> 
          <"\ttest_must_fail git apply del_file.patch 2>error-wt-del &&\n"> <"\ttest_i18ngrep \"beyond a symbolic link\" error-wt-del &&\n"> 
          <"\ttest_path_is_file arch/i386/dir/file &&\n"> <"\trm arch/i386/dir/file &&\n"> <"\n"> 
          <"\ttest_must_fail git apply --index add_file.patch 2>error-ix-add &&\n"> <"\ttest_i18ngrep \"beyond a symbolic link\" error-ix-add &&\n"> 
          <"\ttest_path_is_missing arch/i386/dir/file &&\n"> <"\ttest_must_fail git ls-files --error-unmatch arch/i386/dir &&\n"> <"\n"> 
          <"\ttest_must_fail git apply --cached add_file.patch 2>error-ct-file &&\n"> <"\ttest_i18ngrep \"beyond a symbolic link\" error-ct-file &&\n"> 
          <"\ttest_must_fail git ls-files --error-unmatch arch/i386/dir\n">
        )
      }
    )
    (C {(test_done)})
  ]
)