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#!/bin/sh
#
# Copyright (c) 2007 Nicolas Pitre
#
test_description='pack index with 64-bit offsets and object CRC'
. ./test-lib.sh
test_expect_success \
'setup' \
'rm -rf .git
git init &&
i=1 &&
while test $i -le 100
do
i=`printf '%03i' $i`
echo $i >file_$i &&
test-genrandom "$i" 8192 >>file_$i &&
git update-index --add file_$i &&
i=`expr $i + 1` || return 1
done &&
{ echo 101 && test-genrandom 100 8192; } >file_101 &&
git update-index --add file_101 &&
tree=`git write-tree` &&
commit=`git commit-tree $tree </dev/null` && {
echo $tree &&
git ls-tree $tree | sed -e "s/.* \\([0-9a-f]*\\) .*/\\1/"
} >obj-list &&
git update-ref HEAD $commit'
test_expect_success \
'pack-objects with index version 1' \
'pack1=$(git pack-objects --index-version=1 test-1 <obj-list) &&
git verify-pack -v "test-1-${pack1}.pack"'
test_expect_success \
'pack-objects with index version 2' \
'pack2=$(git pack-objects --index-version=2 test-2 <obj-list) &&
git verify-pack -v "test-2-${pack2}.pack"'
test_expect_success \
'both packs should be identical' \
'cmp "test-1-${pack1}.pack" "test-2-${pack2}.pack"'
test_expect_success \
'index v1 and index v2 should be different' \
'! cmp "test-1-${pack1}.idx" "test-2-${pack2}.idx"'
test_expect_success \
'index-pack with index version 1' \
'git-index-pack --index-version=1 -o 1.idx "test-1-${pack1}.pack"'
test_expect_success \
'index-pack with index version 2' \
'git-index-pack --index-version=2 -o 2.idx "test-1-${pack1}.pack"'
test_expect_success \
'index-pack results should match pack-objects ones' \
'cmp "test-1-${pack1}.idx" "1.idx" &&
cmp "test-2-${pack2}.idx" "2.idx"'
test_expect_success \
'index v2: force some 64-bit offsets with pack-objects' \
'pack3=$(git pack-objects --index-version=2,0x40000 test-3 <obj-list)'
have_64bits=
if msg=$(git verify-pack -v "test-3-${pack3}.pack" 2>&1) ||
! echo "$msg" | grep "pack too large .* off_t"
then
have_64bits=t
else
say "skipping tests concerning 64-bit offsets"
fi
test "$have_64bits" &&
test_expect_success \
'index v2: verify a pack with some 64-bit offsets' \
'git verify-pack -v "test-3-${pack3}.pack"'
test "$have_64bits" &&
test_expect_success \
'64-bit offsets: should be different from previous index v2 results' \
'! cmp "test-2-${pack2}.idx" "test-3-${pack3}.idx"'
test "$have_64bits" &&
test_expect_success \
'index v2: force some 64-bit offsets with index-pack' \
'git-index-pack --index-version=2,0x40000 -o 3.idx "test-1-${pack1}.pack"'
test "$have_64bits" &&
test_expect_success \
'64-bit offsets: index-pack result should match pack-objects one' \
'cmp "test-3-${pack3}.idx" "3.idx"'
test_expect_success \
'[index v1] 1) stream pack to repository' \
'git-index-pack --index-version=1 --stdin < "test-1-${pack1}.pack" &&
git prune-packed &&
git count-objects | ( read nr rest && test "$nr" -eq 1 ) &&
cmp "test-1-${pack1}.pack" ".git/objects/pack/pack-${pack1}.pack" &&
cmp "test-1-${pack1}.idx" ".git/objects/pack/pack-${pack1}.idx"'
test_expect_success \
'[index v1] 2) create a stealth corruption in a delta base reference' \
'# this test assumes a delta smaller than 16 bytes at the end of the pack
git show-index <1.idx | sort -n | sed -ne \$p | (
read delta_offs delta_sha1 &&
git cat-file blob "$delta_sha1" > blob_1 &&
chmod +w ".git/objects/pack/pack-${pack1}.pack" &&
dd of=".git/objects/pack/pack-${pack1}.pack" seek=$(($delta_offs + 1)) \
if=".git/objects/pack/pack-${pack1}.idx" skip=$((256 * 4 + 4)) \
bs=1 count=20 conv=notrunc &&
git cat-file blob "$delta_sha1" > blob_2 )'
test_expect_success \
'[index v1] 3) corrupted delta happily returned wrong data' \
'! cmp blob_1 blob_2'
test_expect_success \
'[index v1] 4) confirm that the pack is actually corrupted' \
'! git fsck --full $commit'
test_expect_success \
'[index v1] 5) pack-objects happily reuses corrupted data' \
'pack4=$(git pack-objects test-4 <obj-list) &&
test -f "test-4-${pack1}.pack"'
test_expect_success \
'[index v1] 6) newly created pack is BAD !' \
'! git verify-pack -v "test-4-${pack1}.pack"'
test_expect_success \
'[index v2] 1) stream pack to repository' \
'rm -f .git/objects/pack/* &&
git-index-pack --index-version=2 --stdin < "test-1-${pack1}.pack" &&
git prune-packed &&
git count-objects | ( read nr rest && test "$nr" -eq 1 ) &&
cmp "test-1-${pack1}.pack" ".git/objects/pack/pack-${pack1}.pack" &&
cmp "test-2-${pack1}.idx" ".git/objects/pack/pack-${pack1}.idx"'
test_expect_success \
'[index v2] 2) create a stealth corruption in a delta base reference' \
'# this test assumes a delta smaller than 16 bytes at the end of the pack
git show-index <1.idx | sort -n | sed -ne \$p | (
read delta_offs delta_sha1 delta_crc &&
git cat-file blob "$delta_sha1" > blob_3 &&
chmod +w ".git/objects/pack/pack-${pack1}.pack" &&
dd of=".git/objects/pack/pack-${pack1}.pack" seek=$(($delta_offs + 1)) \
if=".git/objects/pack/pack-${pack1}.idx" skip=$((8 + 256 * 4)) \
bs=1 count=20 conv=notrunc &&
git cat-file blob "$delta_sha1" > blob_4 )'
test_expect_success \
'[index v2] 3) corrupted delta happily returned wrong data' \
'! cmp blob_3 blob_4'
test_expect_success \
'[index v2] 4) confirm that the pack is actually corrupted' \
'! git fsck --full $commit'
test_expect_success \
'[index v2] 5) pack-objects refuses to reuse corrupted data' \
'! git pack-objects test-5 <obj-list'
test_done
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