This patch changes processing a little and causes some crafted tags to not be parsed and generate a warning.
This is a slight BC break from earlier versions, since it will no longer return the tags of that it was mismatching (see bug68799.phpt), namely the "WINXP" section and the "Author" tag is no longer returned due to this. Although this BC break is merely only for crafted tags, this can also have some real life effects on pictures re-saved from editors that can cause bad exif data writes, so lets keep it here.
Sony is a little more interesting, as it is have a large range of tags it support in different models. For now I have added all the tags found within the Exif.Sony1 namespace.
Before this patch, exif_process_IFD_in_MAKERNOTE() would return false, then causing the rest of the EXIF parsing to be interrupted. This is a regression from earlier which was most likely a part of a security fix for MAKERNOTE.
The new behavior is to instead of stopping to parse, to continue so we can still fetch data like thumbnail and GPS, thrus allowing yet unsupported formats to parse. If EXIF's debugging mode is enabled, a notice will display in case we do not match against a valid MAKERNOTE signature.
This should temporarily fix bug #72682 (exif_read_data() fails to read all data for some images) until I get around to debug it further.
Before this patch, exif_process_IFD_in_MAKERNOTE() would return false, then causing the rest of the EXIF parsing to be interrupted. This is a regression from earlier which was most likely a part of a security fix for MAKERNOTE.
The new behavior is to instead of stopping to parse, to continue so we can still fetch data like thumbnail and GPS, thrus allowing yet unsupported formats to parse. If EXIF's debugging mode is enabled, a notice will display in case we do not match against a valid MAKERNOTE signature.
This should temporarily fix bug #72682 (exif_read_data() fails to read all data for some images) until I get around to debug it further.
(cherry picked from commit aabcb5481d)
Before this patch, exif_process_IFD_in_MAKERNOTE() would return false, then causing the rest of the EXIF parsing to be interrupted. This is a regression from earlier which was most likely a part of a security fix for MAKERNOTE.
The new behavior is to instead of stopping to parse, to continue so we can still fetch data like thumbnail and GPS, thrus allowing yet unsupported formats to parse. If EXIF's debugging mode is enabled, a notice will display in case we do not match against a valid MAKERNOTE signature.
This should temporarily fix bug #72682 (exif_read_data() fails to read all data for some images) until I get around to debug it further.
