This commit adds a lot of test coverage support as guided by gcov +
lcov.
Also added the --no-ipt-check-support option to fwknopd (this is only
useful in practice on older Linux distros where 'iptables -C' is not
available, but it helps with test coverage).
Add a new fko_set_encoded_data() function gated by #define
FUZZING_INTERFACES to allow encryption and authentication to be bypassed
for fuzzing purposes (and only fuzzing purposes). The fko-wrapper code
has been extended to process data in the
test/fko-wrapper/fuzz_spa_payloads file, which is created by the new
python fuzzer. Typical workflow is:
$ cd test/fko-wrapper
$ ../spa_fuzzer.py > fuzz_spa_payloads
$ make fuzzing
(as root):
./test-fwknop.pl --enable-profile-coverage --enable-fuzzing-interfaces --enable-all --include wrapper
[+] Starting the fwknop test suite...
args: --enable-profile-coverage --enable-fuzzing-interfaces --enable-all --include wrapper
Saved results from previous run to: output.last/
Valgrind mode enabled, will import previous coverage from:
output.last/valgrind-coverage/
[+] Total test buckets to execute: 2
[Rijndael] [fko-wrapper] multiple libfko calls (with valgrind)......pass (1)
[Rijndael] [fko-wrapper] multiple libfko calls......................pass (2)
[profile coverage] gcov profile coverage............................pass (3)
[valgrind output] [flagged functions] ..............................pass (4)
Run time: 5.85 minutes
[+] 0/0/0 OpenSSL tests passed/failed/executed
[+] 0/0/0 OpenSSL HMAC tests passed/failed/executed
[+] 4/0/4 test buckets passed/failed/executed
- [server] When GnuPG is used, the default now is to require that
incoming SPA packets are signed by a key listed in GPG_REMOTE_ID for each
access.conf stanza. In other words, the usage of GPG_REQUIRE_SIG
is no longer necessary in order to authenticate SPA packets via the
GnuPG signature. Verification of GnuPG signatures can be disabled with a
new access.conf variable GPG_DISABLE_SIG, but this is NOT a
recommended configuration.
- [client+server] Add --gpg-exe command line argument and GPG_EXE
config variable to ~/.fwknoprc and the access.conf file so that the path
to GnuPG can be changed from the default /usr/bin/gpg path.
This commit adds a new pcap file to the test suite with an SPA packet after
99 other garbage packets. This can be used for pcap_dispatch() testing,
though this is not meant to be super instensive - it is just to ensure that
if a PCAP_DISPATCH_COUNT of, say, 10 is selected that the SPA is still seen
by fwknopd. This commit is in support of #110.
This commit changes iptables policy parsing to re-use rule_exists() for fwknop
jump rule detection instead of using sscanf() against iptables policy list
output. Also, fwknop jump rules are now deleted from iptables policies in a
loop to ensure all are removed even if there are duplicates (even though this
should not happen under normal circumstances anyway).
Bug fix for --nat-rand-port mode to ensure that the port to be
NAT'd is properly defined so that the fwknopd server will NAT
connnections to this port instead of applying the NAT operation to the
port that is to be accessed via -A. This change also prints the
randomly assigned port to stdout regardless of whether --verbose mode is
used (since it not then the user will have no idea which port is
actually going to be NAT'd on the fwknopd side).
This is a fairly significant commit that lays the groundwork for getting
selectable HMAC modes working for both the client and server. One libfko API
change was required so that the hmac_type is passed into fko_new_with_data().
This allows the server to set the hmac_type via access.conf stanzas. The
effort in this commit will be extended to allow HMAC MD5, SHA1, and SHA512
also function properly.
