#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 }
};
send\n\
fork:TAG\n\
delay:QLEN[:MILLIS:P-REPLAY]\n\
+ drop[:P-DROP]\n\
corrupt[:P-CORRUPT]\n",
fp);
}