t/t5302-pack-index.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2007 Nicolas Pitre
   4 #
   5
   6 test_description='pack index with 64-bit offsets and object CRC'
   7 . ./test-lib.sh
   8
   9 test_expect_success \
  10     'setup' \
  11     'rm -rf .git
  12      git init &&
  13      i=1 &&
  14          while test $i -le 100
  15      do
  16                  i=`printf '%03i' $i`
  17          echo $i >file_$i &&
  18          test-genrandom "$i" 8192 >>file_$i &&
  19          git update-index --add file_$i &&
  20                  i=`expr $i + 1` || return 1
  21      done &&
  22      { echo 101 && test-genrandom 100 8192; } >file_101 &&
  23      git update-index --add file_101 &&
  24      tree=`git write-tree` &&
  25      commit=`git commit-tree $tree </dev/null` && {
  26          echo $tree &&
  27          git ls-tree $tree | sed -e "s/.* \\([0-9a-f]*\\)       .*/\\1/"
  28      } >obj-list &&
  29      git update-ref HEAD $commit'
  30
  31 test_expect_success \
  32     'pack-objects with index version 1' \
  33     'pack1=$(git pack-objects --index-version=1 test-1 <obj-list) &&
  34      git verify-pack -v "test-1-${pack1}.pack"'
  35
  36 test_expect_success \
  37     'pack-objects with index version 2' \
  38     'pack2=$(git pack-objects --index-version=2 test-2 <obj-list) &&
  39      git verify-pack -v "test-2-${pack2}.pack"'
  40
  41 test_expect_success \
  42     'both packs should be identical' \
  43     'cmp "test-1-${pack1}.pack" "test-2-${pack2}.pack"'
  44
  45 test_expect_success \
  46     'index v1 and index v2 should be different' \
  47     '! cmp "test-1-${pack1}.idx" "test-2-${pack2}.idx"'
  48
  49 test_expect_success \
  50     'index-pack with index version 1' \
  51     'git-index-pack --index-version=1 -o 1.idx "test-1-${pack1}.pack"'
  52
  53 test_expect_success \
  54     'index-pack with index version 2' \
  55     'git-index-pack --index-version=2 -o 2.idx "test-1-${pack1}.pack"'
  56
  57 test_expect_success \
  58     'index-pack results should match pack-objects ones' \
  59     'cmp "test-1-${pack1}.idx" "1.idx" &&
  60      cmp "test-2-${pack2}.idx" "2.idx"'
  61
  62 test_expect_success \
  63     'index v2: force some 64-bit offsets with pack-objects' \
  64     'pack3=$(git pack-objects --index-version=2,0x40000 test-3 <obj-list)'
  65
  66 have_64bits=
  67 if msg=$(git verify-pack -v "test-3-${pack3}.pack" 2>&1) ||
  68         ! (echo "$msg" | grep "pack too large .* off_t")
  69 then
  70         have_64bits=t
  71 else
  72         say "skipping tests concerning 64-bit offsets"
  73 fi
  74
  75 test "$have_64bits" &&
  76 test_expect_success \
  77     'index v2: verify a pack with some 64-bit offsets' \
  78     'git verify-pack -v "test-3-${pack3}.pack"'
  79
  80 test "$have_64bits" &&
  81 test_expect_success \
  82     '64-bit offsets: should be different from previous index v2 results' \
  83     '! cmp "test-2-${pack2}.idx" "test-3-${pack3}.idx"'
  84
  85 test "$have_64bits" &&
  86 test_expect_success \
  87     'index v2: force some 64-bit offsets with index-pack' \
  88     'git-index-pack --index-version=2,0x40000 -o 3.idx "test-1-${pack1}.pack"'
  89
  90 test "$have_64bits" &&
  91 test_expect_success \
  92     '64-bit offsets: index-pack result should match pack-objects one' \
  93     'cmp "test-3-${pack3}.idx" "3.idx"'
  94
  95 test_expect_success \
  96     '[index v1] 1) stream pack to repository' \
  97     'git-index-pack --index-version=1 --stdin < "test-1-${pack1}.pack" &&
  98      git prune-packed &&
  99      git count-objects | ( read nr rest && test "$nr" -eq 1 ) &&
 100      cmp "test-1-${pack1}.pack" ".git/objects/pack/pack-${pack1}.pack" &&
 101      cmp "test-1-${pack1}.idx"  ".git/objects/pack/pack-${pack1}.idx"'
 102
 103 test_expect_success \
 104     '[index v1] 2) create a stealth corruption in a delta base reference' \
 105     '# this test assumes a delta smaller than 16 bytes at the end of the pack
 106      git show-index <1.idx | sort -n | sed -ne \$p | (
 107        read delta_offs delta_sha1 &&
 108        git cat-file blob "$delta_sha1" > blob_1 &&
 109        chmod +w ".git/objects/pack/pack-${pack1}.pack" &&
 110        dd of=".git/objects/pack/pack-${pack1}.pack" seek=$(($delta_offs + 1)) \
 111           if=".git/objects/pack/pack-${pack1}.idx" skip=$((256 * 4 + 4)) \
 112           bs=1 count=20 conv=notrunc &&
 113        git cat-file blob "$delta_sha1" > blob_2 )'
 114
 115 test_expect_success \
 116     '[index v1] 3) corrupted delta happily returned wrong data' \
 117     '! cmp blob_1 blob_2'
 118
 119 test_expect_success \
 120     '[index v1] 4) confirm that the pack is actually corrupted' \
 121     'test_must_fail git fsck --full $commit'
 122
 123 test_expect_success \
 124     '[index v1] 5) pack-objects happily reuses corrupted data' \
 125     'pack4=$(git pack-objects test-4 <obj-list) &&
 126      test -f "test-4-${pack1}.pack"'
 127
 128 test_expect_success \
 129     '[index v1] 6) newly created pack is BAD !' \
 130     'test_must_fail git verify-pack -v "test-4-${pack1}.pack"'
 131
 132 test_expect_success \
 133     '[index v2] 1) stream pack to repository' \
 134     'rm -f .git/objects/pack/* &&
 135      git-index-pack --index-version=2 --stdin < "test-1-${pack1}.pack" &&
 136      git prune-packed &&
 137      git count-objects | ( read nr rest && test "$nr" -eq 1 ) &&
 138      cmp "test-1-${pack1}.pack" ".git/objects/pack/pack-${pack1}.pack" &&
 139      cmp "test-2-${pack1}.idx"  ".git/objects/pack/pack-${pack1}.idx"'
 140
 141 test_expect_success \
 142     '[index v2] 2) create a stealth corruption in a delta base reference' \
 143     '# this test assumes a delta smaller than 16 bytes at the end of the pack
 144      git show-index <1.idx | sort -n | sed -ne \$p | (
 145        read delta_offs delta_sha1 delta_crc &&
 146        git cat-file blob "$delta_sha1" > blob_3 &&
 147        chmod +w ".git/objects/pack/pack-${pack1}.pack" &&
 148        dd of=".git/objects/pack/pack-${pack1}.pack" seek=$(($delta_offs + 1)) \
 149           if=".git/objects/pack/pack-${pack1}.idx" skip=$((8 + 256 * 4)) \
 150           bs=1 count=20 conv=notrunc &&
 151        git cat-file blob "$delta_sha1" > blob_4 )'
 152
 153 test_expect_success \
 154     '[index v2] 3) corrupted delta happily returned wrong data' \
 155     '! cmp blob_3 blob_4'
 156
 157 test_expect_success \
 158     '[index v2] 4) confirm that the pack is actually corrupted' \
 159     'test_must_fail git fsck --full $commit'
 160
 161 test_expect_success \
 162     '[index v2] 5) pack-objects refuses to reuse corrupted data' \
 163     'test_must_fail git pack-objects test-5 <obj-list'
 164
 165 test_expect_success \
 166     '[index v2] 6) verify-pack detects CRC mismatch' \
 167     'rm -f .git/objects/pack/* &&
 168      git-index-pack --index-version=2 --stdin < "test-1-${pack1}.pack" &&
 169      git verify-pack ".git/objects/pack/pack-${pack1}.pack" &&
 170      chmod +w ".git/objects/pack/pack-${pack1}.idx" &&
 171      dd if=/dev/zero of=".git/objects/pack/pack-${pack1}.idx" conv=notrunc \
 172         bs=1 count=4 seek=$((8 + 256 * 4 + `wc -l <obj-list` * 20 + 0)) &&
 173      ( while read obj
 174        do git cat-file -p $obj >/dev/null || exit 1
 175        done <obj-list ) &&
 176      err=$(test_must_fail git verify-pack \
 177        ".git/objects/pack/pack-${pack1}.pack" 2>&1) &&
 178      echo "$err" | grep "CRC mismatch"'
 179
 180 test_done