#!/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 && git config pack.threads 1 && i=1 && while test $i -le 100 do iii=`printf '%03i' $i` test-genrandom "bar" 200 > wide_delta_$iii && test-genrandom "baz $iii" 50 >> wide_delta_$iii && test-genrandom "foo"$i 100 > deep_delta_$iii && test-genrandom "foo"`expr $i + 1` 100 >> deep_delta_$iii && test-genrandom "foo"`expr $i + 2` 100 >> deep_delta_$iii && echo $iii >file_$iii && test-genrandom "$iii" 8192 >>file_$iii && git update-index --add file_$iii deep_delta_$iii wide_delta_$iii && 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)' if msg=$(git verify-pack -v "test-3-${pack3}.pack" 2>&1) || ! (echo "$msg" | grep "pack too large .* off_t") then test_set_prereq OFF64_T else say "skipping tests concerning 64-bit offsets" fi test_expect_success OFF64_T \ 'index v2: verify a pack with some 64-bit offsets' \ 'git verify-pack -v "test-3-${pack3}.pack"' test_expect_success OFF64_T \ '64-bit offsets: should be different from previous index v2 results' \ '! cmp "test-2-${pack2}.idx" "test-3-${pack3}.idx"' test_expect_success OFF64_T \ 'index v2: force some 64-bit offsets with index-pack' \ 'git index-pack --index-version=2,0x40000 -o 3.idx "test-1-${pack1}.pack"' test_expect_success OFF64_T \ '64-bit offsets: index-pack result should match pack-objects one' \ 'cmp "test-3-${pack3}.idx" "3.idx"' # returns the object number for given object in given pack index index_obj_nr() { idx_file=$1 object_sha1=$2 nr=0 git show-index < $idx_file | while read offs sha1 extra do nr=$(($nr + 1)) test "$sha1" = "$object_sha1" || continue echo "$(($nr - 1))" break done } # returns the pack offset for given object as found in given pack index index_obj_offset() { idx_file=$1 object_sha1=$2 git show-index < $idx_file | grep $object_sha1 | ( read offs extra && echo "$offs" ) } 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 file_101 is a delta smaller than 16 bytes. # It should be against file_100 but we substitute its base for file_099 sha1_101=`git hash-object file_101` && sha1_099=`git hash-object file_099` && offs_101=`index_obj_offset 1.idx $sha1_101` && nr_099=`index_obj_nr 1.idx $sha1_099` && chmod +w ".git/objects/pack/pack-${pack1}.pack" && dd of=".git/objects/pack/pack-${pack1}.pack" seek=$(($offs_101 + 1)) \ if=".git/objects/pack/pack-${pack1}.idx" \ skip=$((4 + 256 * 4 + $nr_099 * 24)) \ bs=1 count=20 conv=notrunc && git cat-file blob $sha1_101 > file_101_foo1' test_expect_success \ '[index v1] 3) corrupted delta happily returned wrong data' \ 'test -f file_101_foo1 && ! cmp file_101 file_101_foo1' test_expect_success \ '[index v1] 4) confirm that the pack is actually corrupted' \ 'test_must_fail 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-${pack1}.pack"' test_expect_success \ '[index v1] 6) newly created pack is BAD !' \ 'test_must_fail git verify-pack -v "test-4-${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 file_101 is a delta smaller than 16 bytes. # It should be against file_100 but we substitute its base for file_099 sha1_101=`git hash-object file_101` && sha1_099=`git hash-object file_099` && offs_101=`index_obj_offset 1.idx $sha1_101` && nr_099=`index_obj_nr 1.idx $sha1_099` && chmod +w ".git/objects/pack/pack-${pack1}.pack" && dd of=".git/objects/pack/pack-${pack1}.pack" seek=$(($offs_101 + 1)) \ if=".git/objects/pack/pack-${pack1}.idx" \ skip=$((8 + 256 * 4 + $nr_099 * 20)) \ bs=1 count=20 conv=notrunc && git cat-file blob $sha1_101 > file_101_foo2' test_expect_success \ '[index v2] 3) corrupted delta happily returned wrong data' \ 'test -f file_101_foo2 && ! cmp file_101 file_101_foo2' test_expect_success \ '[index v2] 4) confirm that the pack is actually corrupted' \ 'test_must_fail git fsck --full $commit' test_expect_success \ '[index v2] 5) pack-objects refuses to reuse corrupted data' \ 'test_must_fail git pack-objects test-5 <obj-list && test_must_fail git pack-objects --no-reuse-object test-6 <obj-list' test_expect_success \ '[index v2] 6) verify-pack detects CRC mismatch' \ 'rm -f .git/objects/pack/* && git index-pack --index-version=2 --stdin < "test-1-${pack1}.pack" && git verify-pack ".git/objects/pack/pack-${pack1}.pack" && obj=`git hash-object file_001` && nr=`index_obj_nr ".git/objects/pack/pack-${pack1}.idx" $obj` && chmod +w ".git/objects/pack/pack-${pack1}.idx" && printf xxxx | dd of=".git/objects/pack/pack-${pack1}.idx" conv=notrunc \ bs=1 count=4 seek=$((8 + 256 * 4 + `wc -l <obj-list` * 20 + $nr * 4)) && ( while read obj do git cat-file -p $obj >/dev/null || exit 1 done <obj-list ) && err=$(test_must_fail git verify-pack \ ".git/objects/pack/pack-${pack1}.pack" 2>&1) && echo "$err" | grep "CRC mismatch"' test_expect_success 'running index-pack in the object store' ' rm -f .git/objects/pack/* && cp test-1-${pack1}.pack .git/objects/pack/pack-${pack1}.pack && ( cd .git/objects/pack git index-pack pack-${pack1}.pack ) && test -f .git/objects/pack/pack-${pack1}.idx ' test_done