Andrew's git / gitweb.git / t/t4139-apply-escape.sh
45b5660a47d88f736aa777641084d13b45852969
   1#!/bin/sh
   2
   3test_description='paths written by git-apply cannot escape the working tree'
   4. ./test-lib.sh
   5
   6# tests will try to write to ../foo, and we do not
   7# want them to escape the trash directory when they
   8# fail
   9test_expect_success 'bump git repo one level down' '
  10        mkdir inside &&
  11        mv .git inside/ &&
  12        cd inside
  13'
  14
  15# $1 = name of file
  16# $2 = current path to file (if different)
  17mkpatch_add () {
  18        rm -f "${2:-$1}" &&
  19        cat <<-EOF
  20        diff --git a/$1 b/$1
  21        new file mode 100644
  22        index 0000000..53c74cd
  23        --- /dev/null
  24        +++ b/$1
  25        @@ -0,0 +1 @@
  26        +evil
  27        EOF
  28}
  29
  30mkpatch_del () {
  31        echo evil >"${2:-$1}" &&
  32        cat <<-EOF
  33        diff --git a/$1 b/$1
  34        deleted file mode 100644
  35        index 53c74cd..0000000
  36        --- a/$1
  37        +++ /dev/null
  38        @@ -1 +0,0 @@
  39        -evil
  40        EOF
  41}
  42
  43# $1 = name of file
  44# $2 = content of symlink
  45mkpatch_symlink () {
  46        rm -f "$1" &&
  47        cat <<-EOF
  48        diff --git a/$1 b/$1
  49        new file mode 120000
  50        index 0000000..$(printf "%s" "$2" | git hash-object --stdin)
  51        --- /dev/null
  52        +++ b/$1
  53        @@ -0,0 +1 @@
  54        +$2
  55        \ No newline at end of file
  56        EOF
  57}
  58
  59test_expect_success 'cannot create file containing ..' '
  60        mkpatch_add ../foo >patch &&
  61        test_must_fail git apply patch &&
  62        test_path_is_missing ../foo
  63'
  64
  65test_expect_success 'can create file containing .. with --unsafe-paths' '
  66        mkpatch_add ../foo >patch &&
  67        git apply --unsafe-paths patch &&
  68        test_path_is_file ../foo
  69'
  70
  71test_expect_success  'cannot create file containing .. (index)' '
  72        mkpatch_add ../foo >patch &&
  73        test_must_fail git apply --index patch &&
  74        test_path_is_missing ../foo
  75'
  76
  77test_expect_success  'cannot create file containing .. with --unsafe-paths (index)' '
  78        mkpatch_add ../foo >patch &&
  79        test_must_fail git apply --index --unsafe-paths patch &&
  80        test_path_is_missing ../foo
  81'
  82
  83test_expect_success 'cannot delete file containing ..' '
  84        mkpatch_del ../foo >patch &&
  85        test_must_fail git apply patch &&
  86        test_path_is_file ../foo
  87'
  88
  89test_expect_success 'can delete file containing .. with --unsafe-paths' '
  90        mkpatch_del ../foo >patch &&
  91        git apply --unsafe-paths patch &&
  92        test_path_is_missing ../foo
  93'
  94
  95test_expect_success 'cannot delete file containing .. (index)' '
  96        mkpatch_del ../foo >patch &&
  97        test_must_fail git apply --index patch &&
  98        test_path_is_file ../foo
  99'
 100
 101test_expect_success SYMLINKS 'symlink escape via ..' '
 102        {
 103                mkpatch_symlink tmp .. &&
 104                mkpatch_add tmp/foo ../foo
 105        } >patch &&
 106        test_must_fail git apply patch &&
 107        test_path_is_missing tmp &&
 108        test_path_is_missing ../foo
 109'
 110
 111test_expect_success SYMLINKS 'symlink escape via .. (index)' '
 112        {
 113                mkpatch_symlink tmp .. &&
 114                mkpatch_add tmp/foo ../foo
 115        } >patch &&
 116        test_must_fail git apply --index patch &&
 117        test_path_is_missing tmp &&
 118        test_path_is_missing ../foo
 119'
 120
 121test_expect_success SYMLINKS 'symlink escape via absolute path' '
 122        {
 123                mkpatch_symlink tmp "$(pwd)" &&
 124                mkpatch_add tmp/foo ../foo
 125        } >patch &&
 126        test_must_fail git apply patch &&
 127        test_path_is_missing tmp &&
 128        test_path_is_missing ../foo
 129'
 130
 131test_expect_success SYMLINKS 'symlink escape via absolute path (index)' '
 132        {
 133                mkpatch_symlink tmp "$(pwd)" &&
 134                mkpatch_add tmp/foo ../foo
 135        } >patch &&
 136        test_must_fail git apply --index patch &&
 137        test_path_is_missing tmp &&
 138        test_path_is_missing ../foo
 139'
 140
 141test_done