63231 2011-06-22 23:59:46 -0700 SharedBufferChunkReader does not deal properly with non printable characters 2011-06-23 13:07:26 -0700 1 1 1 Unclassified WebKit WebCore Misc. 528+ (Nightly build) Unspecified Unspecified RESOLVED FIXED P2 Normal --- 1 jcivelli jcivelli abarth webkit.review.bot oldest_to_newest 425983 0 jcivelli 2011-06-22 23:59:46 -0700 The SharedBUfferChunkReader class currently returns a String when reading a chunk of data. This does not work well with binary data. To deal properly with binary data it should use Vector<char>. 426001 1 98320 jcivelli 2011-06-23 00:50:56 -0700 Created attachment 98320 Patch 426238 2 98320 abarth 2011-06-23 09:52:46 -0700 Comment on attachment 98320 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=98320&action=review > Source/WebCore/ChangeLog:8 > + Fixing the SharedBufferChunkReader API so it works correctly with > + binary data (non printable characters). > + Also adding a method to peek at the data (this is needed for MHTML > + with binary parts). I'm slightly confused as to what this patch is doing. Is this changing any observable behavior? If so, we should add a test. This patch also appears to introduce some functions that aren't used. Is there a subsequent patch that will use these functions? > Source/WebCore/platform/SharedBufferChunkReader.cpp:84 > + chunk.append(m_separator.data(), m_separatorIndex); Can you add an assert that m_separatorIndex <= m_separator.size() ? > Source/WebCore/platform/SharedBufferChunkReader.cpp:110 > + return false; // Compiler is unhappy without this. Rather than have this comment, we usually ASSERT_NOT_REACHED() > Source/WebCore/platform/SharedBufferChunkReader.cpp:113 > +String SharedBufferChunkReader::nextChunkAsUTF8String(bool includeSeparator) Should we say nextChunkAsUTF8StringWithLatin1Fallback ? > Source/WebCore/platform/SharedBufferChunkReader.h:57 > + // Reads size bytes at the current location in the buffer, without changing the buffer position. > + // Returns the number of bytes read. That number might be less than the specified size if the end of the buffer was reached. > + size_t peek(Vector<char>&, size_t); This function doesn't appear to be used yet. 426274 3 98320 jcivelli 2011-06-23 10:35:02 -0700 Comment on attachment 98320 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=98320&action=review >> Source/WebCore/platform/SharedBufferChunkReader.cpp:84 >> + chunk.append(m_separator.data(), m_separatorIndex); > > Can you add an assert that m_separatorIndex <= m_separator.size() ? Done. >> Source/WebCore/platform/SharedBufferChunkReader.cpp:110 >> + return false; // Compiler is unhappy without this. > > Rather than have this comment, we usually ASSERT_NOT_REACHED() Done. >> Source/WebCore/platform/SharedBufferChunkReader.cpp:113 >> +String SharedBufferChunkReader::nextChunkAsUTF8String(bool includeSeparator) > > Should we say nextChunkAsUTF8StringWithLatin1Fallback ? Done. >> Source/WebCore/platform/SharedBufferChunkReader.h:57 >> + size_t peek(Vector<char>&, size_t); > > This function doesn't appear to be used yet. Yes, I need it for the MHTML binary part support. I have local unittest testing it. As soon as we have the unit-tests for WebCore working I'll add them. I'll upload them my unit-test to this bug so they are not lost. 426282 4 jcivelli 2011-06-23 10:38:04 -0700 (In reply to comment #2) > (From update of attachment 98320 [details]) > View in context: https://bugs.webkit.org/attachment.cgi?id=98320&action=review > > > Source/WebCore/ChangeLog:8 > > + Fixing the SharedBufferChunkReader API so it works correctly with > > + binary data (non printable characters). > > + Also adding a method to peek at the data (this is needed for MHTML > > + with binary parts). > > I'm slightly confused as to what this patch is doing. Is this changing any observable behavior? If so, we should add a test. This patch also appears to introduce some functions that aren't used. Is there a subsequent patch that will use these functions? Sorry for the confusion. My goal here is to change the API so it deals correctly with binary data. This is needed for an upcoming patch that allows binary parts in MHTML files. There are several issues with using String in this API when dealing with binary data: - each byte is transformed to a UTF16 char, using 2 bytes when it could use only one - when getting the data out of the string non UTF characters get messed up The peek method is also something I introduce as I'll need it for my upcoming patch. 426300 5 98370 jcivelli 2011-06-23 10:54:46 -0700 Created attachment 98370 Patch 426306 6 jcivelli 2011-06-23 10:58:25 -0700 (In reply to comment #4) > (In reply to comment #2) > > (From update of attachment 98320 [details] [details]) > > View in context: https://bugs.webkit.org/attachment.cgi?id=98320&action=review > > > > > Source/WebCore/ChangeLog:8 > > > + Fixing the SharedBufferChunkReader API so it works correctly with > > > + binary data (non printable characters). > > > + Also adding a method to peek at the data (this is needed for MHTML > > > + with binary parts). > > > > I'm slightly confused as to what this patch is doing. Is this changing any observable behavior? If so, we should add a test. This patch also appears to introduce some functions that aren't used. Is there a subsequent patch that will use these functions? > > Sorry for the confusion. > My goal here is to change the API so it deals correctly with binary data. > This is needed for an upcoming patch that allows binary parts in MHTML files. > There are several issues with using String in this API when dealing with binary data: > - each byte is transformed to a UTF16 char, using 2 bytes when it could use only one > - when getting the data out of the string non UTF characters get messed up > > The peek method is also something I introduce as I'll need it for my upcoming patch. And also, this does not change any current behavior and the mhtml layout-tests ensure this did not break the MHTML support. 426307 7 98370 abarth 2011-06-23 11:01:08 -0700 Comment on attachment 98370 Patch Ok. 426359 8 98370 webkit.review.bot 2011-06-23 12:29:49 -0700 Comment on attachment 98370 Patch Clearing flags on attachment: 98370 Committed r89599: <http://trac.webkit.org/changeset/89599> 426360 9 webkit.review.bot 2011-06-23 12:29:53 -0700 All reviewed patches have been landed. Closing bug. 426389 10 98384 jcivelli 2011-06-23 13:07:26 -0700 Created attachment 98384 Unit-tests Unit-tests that should be added to TestWebKitAPI once it has the WebCore dependency. 98320 2011-06-23 00:50:56 -0700 2011-06-23 10:54:43 -0700 Patch bug-63231-20110623005053.patch text/plain 10587 jcivelli U3VidmVyc2lvbiBSZXZpc2lvbjogODkzMzUKZGlmZiAtLWdpdCBhL1NvdXJjZS9XZWJDb3JlL0No YW5nZUxvZyBiL1NvdXJjZS9XZWJDb3JlL0NoYW5nZUxvZwppbmRleCBjOTVjZDQ4MWNiNjBhZTI3 N2U4NTJhMTgyYzk2NzY1YzQzNzdlZmFlLi4zMGM3NjllNmRjYWZmYzNmYjZmOTdiOTZmZDNhNDFh Y2ViZTYyNDYxIDEwMDY0NAotLS0gYS9Tb3VyY2UvV2ViQ29yZS9DaGFuZ2VMb2cKKysrIGIvU291 cmNlL1dlYkNvcmUvQ2hhbmdlTG9nCkBAIC0xLDMgKzEsMjcgQEAKKzIwMTEtMDYtMjIgIEpheSBD aXZlbGxpICA8amNpdmVsbGlAY2hyb21pdW0ub3JnPgorCisgICAgICAgIFJldmlld2VkIGJ5IE5P Qk9EWSAoT09QUyEpLgorCisgICAgICAgIEZpeGluZyB0aGUgU2hhcmVkQnVmZmVyQ2h1bmtSZWFk ZXIgQVBJIHNvIGl0IHdvcmtzIGNvcnJlY3RseSB3aXRoCisgICAgICAgIGJpbmFyeSBkYXRhIChu b24gcHJpbnRhYmxlIGNoYXJhY3RlcnMpLgorICAgICAgICBBbHNvIGFkZGluZyBhIG1ldGhvZCB0 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