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LibArchive: Pass along errors from Tar header checksum validation

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This commit is contained in:
Tim Schumacher 2022-11-28 19:11:30 +01:00 • committed by Andreas Kling
parent fd3a823a20
commit cb48b9bc30
2 changed files with 5 additions and 8 deletions
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11
Userland/Libraries/LibArchive/TarStream.cpp
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@ -94,8 +94,8 @@ ErrorOr<void> TarInputStream::load_next_header()
if (header_span.size() != sizeof(m_header)) if (header_span.size() != sizeof(m_header))
return Error::from_string_literal("Failed to read the entire header"); return Error::from_string_literal("Failed to read the entire header");
if (!valid()) if (!TRY(valid()))
return Error::from_string_literal("Header is not valid"); return Error::from_string_literal("Header has an invalid magic or checksum");
// Discard the rest of the header block. // Discard the rest of the header block.
TRY(m_stream->discard(block_size - sizeof(TarFileHeader))); TRY(m_stream->discard(block_size - sizeof(TarFileHeader)));
@ -103,7 +103,7 @@ ErrorOr<void> TarInputStream::load_next_header()
return {}; return {};
} }
bool TarInputStream::valid() const ErrorOr<bool> TarInputStream::valid() const
{ {
auto const header_magic = header().magic(); auto const header_magic = header().magic();
auto const header_version = header().version(); auto const header_version = header().version();
@ -114,10 +114,7 @@ bool TarInputStream::valid() const
return false; return false;
// POSIX.1-1988 tar does not have magic numbers, so we also need to verify the header checksum. // POSIX.1-1988 tar does not have magic numbers, so we also need to verify the header checksum.
if (header().checksum().is_error()) return TRY(header().checksum()) == header().expected_checksum();
return false;
return header().checksum().release_value() == header().expected_checksum();
} }
TarFileStream TarInputStream::file_contents() TarFileStream TarInputStream::file_contents()

2
Userland/Libraries/LibArchive/TarStream.h
View file

@ -36,7 +36,7 @@ public:
static ErrorOr<NonnullOwnPtr<TarInputStream>> construct(NonnullOwnPtr<Core::Stream::Stream>); static ErrorOr<NonnullOwnPtr<TarInputStream>> construct(NonnullOwnPtr<Core::Stream::Stream>);
ErrorOr<void> advance(); ErrorOr<void> advance();
bool finished() const { return m_stream->is_eof(); } bool finished() const { return m_stream->is_eof(); }
bool valid() const; ErrorOr<bool> valid() const;
TarFileHeader const& header() const { return m_header; } TarFileHeader const& header() const { return m_header; }
TarFileStream file_contents(); TarFileStream file_contents();