Wireshark-commits: [Wireshark-commits] master b3b1f7c: logcat: improve (crash) robustness, improve
URL: https://code.wireshark.org/review/gitweb?p=wireshark.git;a=commit;h=b3b1f7c3aa2233a147294bad833b748d38fba84d
Submitter: Michal Labedzki (michal.labedzki@xxxxxxxxx)
Changed: branch: master
Repository: wireshark
Commits:
b3b1f7c by Peter Wu (peter@xxxxxxxxxxxxx):
logcat: improve (crash) robustness, improve names
The logcat version detector would crash with ASAN enabled because it did
not validate the payload length and hence a payload length of 0 would
trigger out-of-bounds access. (This happened on non-logcat data.)
This patch tries to get rid of all magic numbers by using a structure,
improves the version detector to validate the payload length and
prevents crashes due to missing nul-terminators in the input. Older
Android kernels would create entries with __pad with random contents, so
that cannot be used to determine version for v1. Instead, use heuristics
on the priority, tag and maybe the msg field.
Furthermore, Android is mostly (if not, always?) Little-Endian, so add
conversions where necessary (just in case WS supports BE arches).
"microseconds" has been renamed to "milliseconds" because that is what
they are, actually. A duplicate logcat_log loop has been refactored
such that one loop is sufficient, instead of separate buffers for each
log part, a single one is now used. get_priority does not really need
a pointer, just make it accept a character.
The output has been validated against v1 and v2 logcat binary formats
with __pad (hdr_size) equal to 0, and on attachment 9906.
Change-Id: I46c8813e76fe705b293ffdee85b4c1bfff7d8362
Reviewed-on: https://code.wireshark.org/review/2803
Reviewed-by: Michal Labedzki <michal.labedzki@xxxxxxxxx>
Tested-by: Michal Labedzki <michal.labedzki@xxxxxxxxx>
Actions performed:
from aa0eb59 Restore some assignments of ti2 that were removed in the proto_tree_add_subtree[_format] conversion
adds b3b1f7c logcat: improve (crash) robustness, improve names
Summary of changes:
wiretap/logcat.c | 269 +++++++++++++++++++++++++++++++++---------------------
1 file changed, 167 insertions(+), 102 deletions(-)
