resolve merge conflicts of 5ab03cb41 to oc-mr1-dev-plus-aosp
Test: I solemnly swear I tested this conflict resolution.
Change-Id: Ic749614fb03d60d6cc7e0eb04bb67102e572e9f2
diff --git a/libziparchive/include/ziparchive/zip_archive.h b/libziparchive/include/ziparchive/zip_archive.h
index dd463d1..018b1a9 100644
--- a/libziparchive/include/ziparchive/zip_archive.h
+++ b/libziparchive/include/ziparchive/zip_archive.h
@@ -265,6 +265,9 @@
* Returns 0 on success and negative values on failure, for example if |reader|
* cannot supply the right amount of data, or if the number of bytes written to
* data does not match |uncompressed_length|.
+ *
+ * If |crc_out| is not nullptr, it is set to the crc32 checksum of the
+ * uncompressed data.
*/
int32_t Inflate(const Reader& reader, const uint32_t compressed_length,
const uint32_t uncompressed_length, Writer* writer, uint64_t* crc_out);
diff --git a/libziparchive/zip_archive.cc b/libziparchive/zip_archive.cc
index ee5df83..91e775f 100644
--- a/libziparchive/zip_archive.cc
+++ b/libziparchive/zip_archive.cc
@@ -924,6 +924,7 @@
std::unique_ptr<z_stream, decltype(zstream_deleter)> zstream_guard(&zstream, zstream_deleter);
+ const bool compute_crc = (crc_out != nullptr);
uint64_t crc = 0;
uint32_t remaining_bytes = compressed_length;
do {
@@ -955,9 +956,8 @@
if (zstream.avail_out == 0 || (zerr == Z_STREAM_END && zstream.avail_out != kBufSize)) {
const size_t write_size = zstream.next_out - &write_buf[0];
if (!writer->Append(&write_buf[0], write_size)) {
- // The file might have declared a bogus length.
- return kInconsistentInformation;
- } else {
+ return kIoError;
+ } else if (compute_crc) {
crc = crc32(crc, &write_buf[0], write_size);
}
@@ -974,7 +974,9 @@
// it ourselves above because there are no additional gains to be made by
// having zlib calculate it for us, since they do it by calling crc32 in
// the same manner that we have above.
- *crc_out = crc;
+ if (compute_crc) {
+ *crc_out = crc;
+ }
if (zstream.total_out != uncompressed_length || remaining_bytes != 0) {
ALOGW("Zip: size mismatch on inflated file (%lu vs %" PRIu32 ")", zstream.total_out,
diff --git a/libziparchive/zip_archive_test.cc b/libziparchive/zip_archive_test.cc
index 753bd44..374310b 100644
--- a/libziparchive/zip_archive_test.cc
+++ b/libziparchive/zip_archive_test.cc
@@ -766,6 +766,93 @@
ASSERT_EQ(-1, OpenArchiveFd(tmp_file.fd, "LeadingNonZipBytes", &handle));
}
+class VectorReader : public zip_archive::Reader {
+ public:
+ VectorReader(const std::vector<uint8_t>& input) : Reader(), input_(input) {}
+
+ bool ReadAtOffset(uint8_t* buf, size_t len, uint32_t offset) const {
+ if ((offset + len) < input_.size()) {
+ return false;
+ }
+
+ memcpy(buf, &input_[offset], len);
+ return true;
+ }
+
+ private:
+ const std::vector<uint8_t>& input_;
+};
+
+class VectorWriter : public zip_archive::Writer {
+ public:
+ VectorWriter() : Writer() {}
+
+ bool Append(uint8_t* buf, size_t size) {
+ output_.insert(output_.end(), buf, buf + size);
+ return true;
+ }
+
+ std::vector<uint8_t>& GetOutput() { return output_; }
+
+ private:
+ std::vector<uint8_t> output_;
+};
+
+class BadReader : public zip_archive::Reader {
+ public:
+ BadReader() : Reader() {}
+
+ bool ReadAtOffset(uint8_t*, size_t, uint32_t) const { return false; }
+};
+
+class BadWriter : public zip_archive::Writer {
+ public:
+ BadWriter() : Writer() {}
+
+ bool Append(uint8_t*, size_t) { return false; }
+};
+
+TEST(ziparchive, Inflate) {
+ const uint32_t compressed_length = kATxtContentsCompressed.size();
+ const uint32_t uncompressed_length = kATxtContents.size();
+
+ const VectorReader reader(kATxtContentsCompressed);
+ {
+ VectorWriter writer;
+ uint64_t crc_out = 0;
+
+ int32_t ret =
+ zip_archive::Inflate(reader, compressed_length, uncompressed_length, &writer, &crc_out);
+ ASSERT_EQ(0, ret);
+ ASSERT_EQ(kATxtContents, writer.GetOutput());
+ ASSERT_EQ(0x950821C5u, crc_out);
+ }
+
+ {
+ VectorWriter writer;
+ int32_t ret =
+ zip_archive::Inflate(reader, compressed_length, uncompressed_length, &writer, nullptr);
+ ASSERT_EQ(0, ret);
+ ASSERT_EQ(kATxtContents, writer.GetOutput());
+ }
+
+ {
+ BadWriter writer;
+ int32_t ret =
+ zip_archive::Inflate(reader, compressed_length, uncompressed_length, &writer, nullptr);
+ ASSERT_EQ(kIoError, ret);
+ }
+
+ {
+ BadReader reader;
+ VectorWriter writer;
+ int32_t ret =
+ zip_archive::Inflate(reader, compressed_length, uncompressed_length, &writer, nullptr);
+ ASSERT_EQ(kIoError, ret);
+ ASSERT_EQ(0u, writer.GetOutput().size());
+ }
+}
+
int main(int argc, char** argv) {
::testing::InitGoogleTest(&argc, argv);