A bunch of infrastructure work to move IOSource, IOSourceRegistry (now
iosource::Manager) and PktSrc/PktDumper code into iosource/, and over
to a plugin structure.
Other IOSources aren't touched yet, they are still in src/*.
It compiles and does something with a small trace, but that's all I've
tested so far. There are quite certainly a number of problems left, as
well as various TODOs and cleanup; and nothing's cast in stone yet.
Will continue to work on this.
* vlad/topic/vladg/dns_txt_queries:
Add detection rate threshold for MHR.
Make sure lookup_hostname_txt isn't checking lookup_hostname's cache for answers.
A couple of lookup_hostname_txt fixes.
Reverting the earlier function-join during merging.
* vlad/topic/vladg/dns_txt_queries:
DNS TXT support
I've tweaked it a little bit, still seems to work ...
I'd like to add a test for this but I'n not quite sure how to do that.
We'd have to hardcode a destination server that then'd be contacted
each time the test-suite runs.
DNS_Mgr handles combining the results of the A and AAAA queries
for a given hostname such that at the scripting layer, the name
resolution can yield a set with both IPv4 and IPv6 addresses.
Internally, all BROv6 preprocessor switches were removed and
addr/subnet representations wrapped in the new IPAddr/IPPrefix classes.
Some script-layer changes of note:
- dns_AAAA_reply event signature changed: the string representation
of an IPv6 addr is easily derived from the addr value, it doesn't
need to be another parameter. This event also now generated directly
by the DNS analyzer instead of being "faked" into a dns_A_reply event.
- removed addr_to_count BIF. It used to return the host-order
count representation of IPv4 addresses only. To make it more
generic, we might later add a BIF to return a vector of counts
in order to support IPv6.
- changed the result of enclosing addr variables in vertical pipes
(e.g. |my_addr|) to return the bit-width of the address type which
is 128 for IPv6 and 32 for IPv4. It used to function the same
way as addr_to_count mentioned above.
- remove bro_has_ipv6 BIF
Some of the changes only clean up at termination to make perftools
happt, but there were some "real" leaks as well.
This fixes all DNS leaks I could reproducem, including most likely
what's reported in #534. Closing #534.
I'm also adding a new btest subdir core/leaks with tests requiring
perftools support. These don't compare against base lines but abort
whenever perftools reports a leak (with stack information to track it
down). Right now, these are passing.
- Asynchronous DNS resolver support assumed by default
- HAVE_ASYNC_DNS, HAVE_NB_DNS, and USE_NB_DNS preprocessor definitions
removed
- In the process, I added FindBIND and CheckNameserCompat CMake modules
