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-rw-r--r--applypatch/imgdiff.cpp4
-rw-r--r--applypatch/imgpatch.cpp1
-rw-r--r--applypatch/include/applypatch/imgdiff_image.h3
3 files changed, 5 insertions, 3 deletions
diff --git a/applypatch/imgdiff.cpp b/applypatch/imgdiff.cpp
index 674cc2b16..415d95f14 100644
--- a/applypatch/imgdiff.cpp
+++ b/applypatch/imgdiff.cpp
@@ -462,12 +462,12 @@ PatchChunk::PatchChunk(const ImageChunk& tgt)
target_len_(tgt.GetRawDataLength()),
target_uncompressed_len_(tgt.DataLengthForPatch()),
target_compress_level_(tgt.GetCompressLevel()),
- data_(tgt.DataForPatch(), tgt.DataForPatch() + tgt.DataLengthForPatch()) {}
+ data_(tgt.GetRawData(), tgt.GetRawData() + tgt.GetRawDataLength()) {}
// Return true if raw data is smaller than the patch size.
bool PatchChunk::RawDataIsSmaller(const ImageChunk& tgt, size_t patch_size) {
size_t target_len = tgt.GetRawDataLength();
- return (tgt.GetType() == CHUNK_NORMAL && (target_len <= 160 || target_len < patch_size));
+ return target_len < patch_size || (tgt.GetType() == CHUNK_NORMAL && target_len <= 160);
}
void PatchChunk::UpdateSourceOffset(const SortedRangeSet& src_range) {
diff --git a/applypatch/imgpatch.cpp b/applypatch/imgpatch.cpp
index c4c2707fb..2f8f4851d 100644
--- a/applypatch/imgpatch.cpp
+++ b/applypatch/imgpatch.cpp
@@ -54,6 +54,7 @@ static bool ApplyBSDiffPatchAndStreamOutput(const uint8_t* src_data, size_t src_
const Value& patch, size_t patch_offset,
const char* deflate_header, SinkFn sink) {
size_t expected_target_length = static_cast<size_t>(Read8(deflate_header + 32));
+ CHECK_GT(expected_target_length, 0);
int level = Read4(deflate_header + 40);
int method = Read4(deflate_header + 44);
int window_bits = Read4(deflate_header + 48);
diff --git a/applypatch/include/applypatch/imgdiff_image.h b/applypatch/include/applypatch/imgdiff_image.h
index 084807237..671605160 100644
--- a/applypatch/include/applypatch/imgdiff_image.h
+++ b/applypatch/include/applypatch/imgdiff_image.h
@@ -44,6 +44,8 @@ class ImageChunk {
int GetType() const {
return type_;
}
+
+ const uint8_t* GetRawData() const;
size_t GetRawDataLength() const {
return raw_data_len_;
}
@@ -99,7 +101,6 @@ class ImageChunk {
bsdiff::SuffixArrayIndexInterface** bsdiff_cache);
private:
- const uint8_t* GetRawData() const;
bool TryReconstruction(int level);
int type_; // CHUNK_NORMAL, CHUNK_DEFLATE, CHUNK_RAW