diff options
Diffstat (limited to 'apt-pkg/acquire-item.cc')
| -rw-r--r-- | apt-pkg/acquire-item.cc | 41 |
1 files changed, 17 insertions, 24 deletions
diff --git a/apt-pkg/acquire-item.cc b/apt-pkg/acquire-item.cc index 2cf6b60a8..45f8cb76c 100644 --- a/apt-pkg/acquire-item.cc +++ b/apt-pkg/acquire-item.cc @@ -206,12 +206,12 @@ HashStringList pkgAcqMetaBase::GetExpectedHashes() const APT_CONST bool pkgAcqIndexDiffs::HashesRequired() const { - /* We don't always have the diff of the downloaded pdiff file. - What we have for sure is hashes for the uncompressed file, - but rred uncompresses them on the fly while parsing, so not handled here. - Hashes are (also) checked while searching for (next) patch to apply. */ + /* We can't check hashes of rred result as we don't know what the + hash of the file will be. We just know the hash of the patch(es), + the hash of the file they will apply on and the hash of the resulting + file. */ if (State == StateFetchDiff) - return available_patches[0].download_hashes.empty() == false; + return true; return false; } HashStringList pkgAcqIndexDiffs::GetExpectedHashes() const @@ -227,7 +227,7 @@ APT_CONST bool pkgAcqIndexMergeDiffs::HashesRequired() const we can check the rred result after all patches are applied as we know the expected result rather than potentially apply more patches */ if (State == StateFetchDiff) - return patch.download_hashes.empty() == false; + return true; return State == StateApplyDiff; } HashStringList pkgAcqIndexMergeDiffs::GetExpectedHashes() const @@ -2022,6 +2022,17 @@ bool pkgAcqDiffIndex::ParseDiffIndex(string const &IndexDiffFile) /*{{{*/ return false; } + for (auto const &patch: available_patches) + if (patch.result_hashes.usable() == false || + patch.patch_hashes.usable() == false || + patch.download_hashes.usable() == false) + { + if (Debug) + std::clog << "pkgAcqDiffIndex: " << IndexDiffFile << ": provides no usable hashes for " << patch.file + << " so fallback to complete download" << std::endl; + return false; + } + // patching with too many files is rather slow compared to a fast download unsigned long const fileLimit = _config->FindI("Acquire::PDiffs::FileLimit", 0); if (fileLimit != 0 && fileLimit < available_patches.size()) @@ -2036,7 +2047,6 @@ bool pkgAcqDiffIndex::ParseDiffIndex(string const &IndexDiffFile) /*{{{*/ unsigned short const sizeLimitPercent = _config->FindI("Acquire::PDiffs::SizeLimit", 100); if (sizeLimitPercent > 0 && TransactionManager->MetaIndexParser != nullptr) { - // compressed case unsigned long long downloadSize = std::accumulate(available_patches.begin(), available_patches.end(), 0llu, [](unsigned long long const T, DiffInfo const &I) { return T + I.download_hashes.FileSize(); @@ -2065,23 +2075,6 @@ bool pkgAcqDiffIndex::ParseDiffIndex(string const &IndexDiffFile) /*{{{*/ return false; } } - // uncompressed case - downloadSize = std::accumulate(available_patches.begin(), - available_patches.end(), 0llu, [](unsigned long long const T, DiffInfo const &I) { - return T + I.patch_hashes.FileSize(); - }); - if (downloadSize != 0) - { - unsigned long long const downloadSizeIdx = ServerSize; - unsigned long long const sizeLimit = downloadSizeIdx * sizeLimitPercent; - if ((sizeLimit/100) < downloadSize) - { - if (Debug) - std::clog << "Need " << downloadSize << " uncompressed bytes (Limit is " << (sizeLimit/100) << ", " - << "original is " << downloadSizeIdx << ") so fallback to complete download" << std::endl; - return false; - } - } } // we have something, queue the diffs |