On Mon, Aug 04, 2014 at 12:16:30AM +0800, Hangbin Liu wrote:
> Trinity is a syscall fuzz tool for local host testing. But it would also be
> very useful to fuzz during established sessions over the network. This patch
> add simple connection ability for IPv4/IPv6 so user can use it as a
> client/server and simulate as a real environment.
Useful addition, something I've had at the back of my mind for a while
to revisit when I move back to the networking code, so I'm glad you got
there before I did :-)
Couple small things..
> @@ -80,6 +83,8 @@ static void usage(void)
> outputerr(" --syslog,-S: log important info to syslog. (useful if
> syslog is remote)\n");
> outputerr(" --verbose,-v: increase output verbosity.\n");
> outputerr(" --victims,-V: path to victim files.\n");
> + outputerr(" --server_addr: supply an IPv4 or IPv6 address to connect,
> no need for server side.\n");
> + outputerr(" --server_port: supply an server port to listen or connect,
> will fuzz between port to (port + 100)\n");
> outputerr("\n");
> outputerr(" -c#,@: target specific syscall (takes syscall name as
> parameter and optionally 32 or 64 as bit-width. Default:both).\n");
> outputerr(" -N#: do # syscalls then exit.\n");
Please keep in alphabetical order.
> @@ -113,13 +118,16 @@ static const struct option longopts[] = {
> { "syslog", no_argument, NULL, 'S' },
> { "verbose", no_argument, NULL, 'v' },
> { "victims", required_argument, NULL, 'V' },
> + { "server_addr", required_argument, NULL, 0 },
> + { "server_port", required_argument, NULL, 0 },
> { NULL, 0, NULL, 0 } };
and here too.
> + case 0:
> + /*
> + * FIXME: It's really hard to find two reasonable short
> + * names since S s P p all have been used. Use long
> + * options before we fix this issue.
> + */
> + if (strcmp("server_addr", longopts[opt_index].name) ==
> 0)
> + strcpy(server_addr, optarg);
> + if (strcmp("server_port", longopts[opt_index].name) ==
> 0)
> + server_port = atoi(optarg);
> + break;
Yeah, this kinda sucks, that we've burned through so many options
already. I wonder if it's getting to the point where a config file
parser would be a good addition instead of adding more parameters.
Another possibility.. part of me is disliking those 'server_port'
'server_addr' variables, so I was trying to think of something better,
but I didn't really get far other than wondering if perhaps we can
extend the -V/--victims option.
Hm, I'll think on it some more.
I've not done any review of the actual networking bits, but from a quick
skim, nothing jumped out at me.
thanks,
Dave
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