External IP resolution via '-R' (or '--resolve-ip-http') is now done via SSL by
default. The IP resolution URL is now 'https://www.cipherdyne.org/cgi-gin/myip',
and a warning is generated in '-R' mode whenever a non-HTTPS URL is specified
(it is safer just to use the default). The fwknop client leverages 'wget' for
this operation since that is cleaner than having fwknop link against an SSL
library.
With this commit PF rules are added correctly regardless of whether ALTQ support
is available or not. Thanks to Barry Allard for discovering and reporting this
issue. Closes issue #121 on github.
Bug fix discovered with the libfiu fault injection tag
"fko_get_username_init" combined with valgrind analysis. This bug
is only triggered after a valid authenticated and decrypted SPA
packet is sniffed by fwknopd:
==11181== Conditional jump or move depends on uninitialised value(s)
==11181== at 0x113B6D: incoming_spa (incoming_spa.c:707)
==11181== by 0x11559F: process_packet (process_packet.c:211)
==11181== by 0x5270857: ??? (in /usr/lib/x86_64-linux-gnu/libpcap.so.1.4.0)
==11181== by 0x114BCC: pcap_capture (pcap_capture.c:270)
==11181== by 0x10F32C: main (fwknopd.c:195)
==11181== Uninitialised value was created by a stack allocation
==11181== at 0x113476: incoming_spa (incoming_spa.c:294)
When validating access.conf stanzas make sure that one of
GPG_REMOTE_ID or GPG_FINGERPRINT_ID is specified whenever GnuPG
signatures are to be verified for incoming SPA packets. Signature
verification is the default, and can only be disabled with
GPG_DISABLE_SIG but this is NOT recommended.
Add a new GPG_FINGERPRINT_ID variable to the access.conf file
so that full GnuPG fingerprints can be required for incoming SPA packets
in addition to the appreviated GnuPG signatures listed in GPG_REMOTE_ID.
From the test suite, an example fingerprint is
GPG_FINGERPRINT_ID 00CC95F05BC146B6AC4038C9E36F443C6A3FAD56
This commit fixes the following leak found by valgrind:
==6241== 568 bytes in 1 blocks are still reachable in loss record 1 of 1
==6241== at 0x4C2A2DB: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==6241== by 0x551537A: __fopen_internal (iofopen.c:73)
==6241== by 0x118C8E: parse_access_file (access.c:1143)
==6241== by 0x10F134: main (fwknopd.c:250)
