/* -*-c-*-
- *
- * $Id$
*
* An evil proxy for TrIPE
*
* (c) 2001 Straylight/Edgeware
*/
-/*----- Licensing notice --------------------------------------------------*
+/*----- Licensing notice --------------------------------------------------*
*
* This file is part of Trivial IP Encryption (TrIPE).
*
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
- *
+ *
* TrIPE is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
- *
+ *
* You should have received a copy of the GNU General Public License
* along with TrIPE; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#include <catacomb/rand.h>
#include <catacomb/rc4.h>
+#include "util.h"
+
/*----- Data structures ---------------------------------------------------*/
typedef struct peer {
{
corrupt *c;
if (ac > 1)
- die(1, "syntax: filt:corrupt[:PCORRUPT]");
+ die(1, "syntax: filt:corrupt[:P-CORRUPT]");
c = CREATE(corrupt);
if (ac > 0)
c->p_corrupt = atoi(av[0]);
f->func = docorrupt;
}
+/*----- Drop filter -------------------------------------------------------*/
+
+typedef struct drop {
+ unsigned p_drop;
+} drop;
+
+static void dodrop(filter *f, const octet *buf, size_t sz)
+{
+ drop *d = f->state;
+
+ if (!RND(d->p_drop))
+ puts("drop packet");
+ else
+ PASS(f->next, buf, sz);
+}
+
+static void adddrop(filter *f, unsigned ac, char **av)
+{
+ drop *d;
+ if (ac > 1)
+ die(1, "syntax: filt:drop[:P-DROP]");
+ d = CREATE(drop);
+ if (ac > 0)
+ d->p_drop = atoi(av[0]);
+ else
+ d->p_drop = 5;
+ f->state = d;
+ f->func = dodrop;
+}
+
/*----- Delay filter ------------------------------------------------------*/
typedef struct delaynode {
unsigned i;
if (ac < 1 || ac > 3)
- die(1, "syntax: filt:delay:QLEN[:MILLIS:PREPLAY]");
+ die(1, "syntax: filt:delay:QLEN[:MILLIS:P-REPLAY]");
d = CREATE(delay);
d->max = atoi(av[0]);
if (ac > 1)
static void dosend(filter *f, const octet *buf, size_t sz)
{
printf("send to `%s'\n", f->p_to->name);
- write(f->p_to->sf.fd, buf, sz);
+ DISCARD(write(f->p_to->sf.fd, buf, sz));
}
static void addsend(filter *f, unsigned ac, char **av)
{ "send", addsend },
{ "fork", addfork },
{ "delay", adddelay },
+ { "drop", adddrop },
{ "corrupt", addcorrupt },
{ 0, 0 }
};
PASS(f->p->f, buf, sz);
setflood(f);
}
-
+
static void setflood(flood *f)
{
struct timeval tv;
/*----- Main driver -------------------------------------------------------*/
static void version(FILE *fp)
-{
- pquis(fp, "$, TrIPE version " VERSION "\n");
-}
+ { pquis(fp, "$, TrIPE version " VERSION "\n"); }
static void usage(FILE *fp)
-{
- pquis(fp, "Usage: $ [-k KEYRING] DIRECTIVE...\n");
-}
+ { pquis(fp, "Usage: $ [-k KEYRING] DIRECTIVE...\n"); }
static void help(FILE *fp)
{
send\n\
fork:TAG\n\
delay:QLEN[:MILLIS:P-REPLAY]\n\
+ drop[:P-DROP]\n\
corrupt[:P-CORRUPT]\n",
fp);
}