Since we use the special 0xffff value in the builder code, check that
the tag is not 0xffff in ie_tlv_builder_finalize before writing the
header. This is for consistency, not for a specific use case.
Make parsing TLVs using Extended Element IDs easier by returning the
extended tag value as listed in enum ie_type instead of just the 255
value, and not returning the pointer to the extended tag as the IE data
and instead the pointer to the next byte after the extended ID.
Parse the contents of the GTK and IGTK subelements in an FT IE instead
of working with buffers containing the whole subelement. Some more
validation of the subelement contents. Drop support for GTK / IGTK when
building the FTE (unused).
When parsing the EAPoL-Key key data field we don't strip the 0xdd /
0x00 padding from the decrypted data so there may be trailing padding
after the IE sequence and valgrind will report an invalid read of the
length byte. Same thing may happen if we're sent garbage.
Currently it supports Microsoft vendor specific information element
with version and type value 1 only. Typically it contains WPA security
related information.
==20758== Invalid read of size 1
==20758== at 0x401254: ie_tlv_iter_next (ie.c:55)
==20758== by 0x40104B: ie_test (test-ie.c:57)
==20758== by 0x4021C0: l_test_run (test.c:83)
==20758== by 0x4011B7: main (test-ie.c:123)
==20758== Address 0x51e10f3 is 0 bytes after a block of size 19 alloc'd
==20758== at 0x4C2C874: realloc (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==20758== by 0x4010CF: append_data (test-ie.c:101)
==20758== by 0x40118F: main (test-ie.c:119)
==20758==
==20758== Invalid read of size 1
==20758== at 0x401266: ie_tlv_iter_next (ie.c:56)
==20758== by 0x40104B: ie_test (test-ie.c:57)
==20758== by 0x4021C0: l_test_run (test.c:83)
==20758== by 0x4011B7: main (test-ie.c:123)
==20758== Address 0x51e10f4 is 1 bytes after a block of size 19 alloc'd
==20758== at 0x4C2C874: realloc (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==20758== by 0x4010CF: append_data (test-ie.c:101)
==20758== by 0x40118F: main (test-ie.c:119)
