* common/tlv.h (TLV_PARSER_FLAG_T5793): New.
(tlv_parser_new): New macro. Rename function with an underscore.
(tlv_next_with_flag): New.
* common/tlv-parser.c (struct tlv_parser_s): Remove const from buffer.
Add fields crammed, lasttlv, and origoff. Remove bufferlist ands ist
definition.
(dump_to_file): New but disabled debug helper.
(parse_tag): Print more info on error.
(_tlv_parser_new): Add args lasttlv and LNO. Take a copy of the data.
(_tlv_parser_release): Free the copy of the buffer and return the
recorded TLV object from tlv_parser_new.
(_tlv_peek, tlv_parser_peek, _tlv_parser_peek_null): Remove.
(_tlv_push): Record crammed length.
(_tlv_pop): Restore crammed length.
(_tlv_parser_next): Add arg flags. More debug output. Handle cramming
here. Take care of cramming here.
(tlv_expect_object): Simplify to adjust for changes in _tlv_parser_next.
(tlv_expect_octet_string): Remove arg encapsulates. Adjust for
changes in _tlv_parser_next. Change all allers.
(tlv_expect_null): New.
(cram_octet_string): Rewrite.
(need_octet_string_cramming): Remove.
* sm/minip12.c (dump_to_file): New. Enablein debug mode and if a
envvar ist set. Replace all explict but disabled dumping to call this
function.
(parse_bag_encrypted_data): Replace tlv_peek_null and a peeking for an
optional SET by non-peeking code.
(parse_cert_bag): Ditto.
(parse_shrouded_key_bag): Replace tlv_peek_null by non-peeking code.
(parse_bag_encrypted_data): Use the new TLV_PARSER_FLAG_T5793 to
enable the Mozilla workaround.
(parse_bag_encrypted_data): Replace the 'renewed_tlv' code by the new
tlv_parser_release semantics.
(parse_shrouded_key_bag): Ditto.
(parse_shrouded_key_bag): Create a new context instead of using the
former encapsulated mechanism for tlv_expect_octet_string.
(parse_bag_data): Ditto.
(p12_parse): Ditto.
--
GnuPG-bug-id: 7213
Fixing this took way too long; I should have earlier explained the
code to a co-hacker to find the problem myself in my code by this.
Backported-from-master: 690fd61a0cf2b4b51ee64811656692eb644d2918
* sm/minip12.c: Factor parsing code out to ...
* common/tlv-parser.c: new. Extend function names and provide a few
extra functions.
* common/Makefile.am (common_sources): Add new file.
* sm/minip12.c: Adjust to use the new parser API.
