From d0aa0817d2387e89555ed090d900f61c56b19caa Mon Sep 17 00:00:00 2001
From: Guus Sliepen <guus@tinc-vpn.org>
Date: Fri, 30 Aug 2013 13:04:14 +0200
Subject: [PATCH] Add an option to test datagram SPTPS with packet loss.
---
src/sptps_test.c | 66 +++++++++++++++++++++++++++++++++++++++++++-----
1 file changed, 60 insertions(+), 6 deletions(-)
diff --git a/src/sptps_test.c b/src/sptps_test.c
index 2ce98044..6f6be4b0 100644
--- a/src/sptps_test.c
+++ b/src/sptps_test.c
@@ -19,6 +19,8 @@
#include "system.h"
+#include <getopt.h>
+
#include "crypto.h"
#include "ecdsa.h"
#include "sptps.h"
@@ -49,24 +51,72 @@ static bool receive_record(void *handle, uint8_t type, const char *data, uint16_
return true;
}
+static struct option const long_options[] = {
+ {"datagram", no_argument, NULL, 'd'},
+ {"packet-loss", required_argument, NULL, 'l'},
+ {"help", no_argument, NULL, 1},
+ {NULL, 0, NULL, 0}
+};
+
+const char *program_name;
+
+static void usage() {
+ fprintf(stderr, "Usage: %s [options] my_ecdsa_key_file his_ecdsa_key_file [host] port\n\n", program_name);
+ fprintf(stderr, "Valid options are:\n"
+ " -d, --datagram Enable datagram mode.\n"
+ " -l, --packet-loss RATE Fake packet loss of RATE percent.\n"
+ "\n");
+ fprintf(stderr, "Report bugs to tinc@tinc-vpn.org.\n");
+}
+
int main(int argc, char *argv[]) {
+ program_name = argv[0];
bool initiator = false;
bool datagram = false;
+ int packetloss = 0;
+ int r;
+ int option_index = 0;
+
+ while((r = getopt_long(argc, argv, "dl:", long_options, &option_index)) != EOF) {
+ switch (r) {
+ case 0: /* long option */
+ break;
+
+ case 'd': /* datagram mode */
+ datagram = true;
+ break;
+
+ case 'l': /* packet loss rate */
+ packetloss = atoi(optarg);
+ break;
- if(argc > 1 && !strcmp(argv[1], "-d")) {
- datagram = true;
- argc--;
- argv++;
+ case '?': /* wrong options */
+ usage();
+ return 1;
+
+ case 1: /* help */
+ usage();
+ return 0;
+
+ default:
+ break;
+ }
}
- if(argc < 4) {
- fprintf(stderr, "Usage: %s [-d] my_ecdsa_key_file his_ecdsa_key_file [host] port\n", argv[0]);
+ argc -= optind - 1;
+ argv += optind - 1;
+
+ if(argc < 4 || argc > 5) {
+ fprintf(stderr, "Wrong number of arguments.\n");
+ usage();
return 1;
}
if(argc > 4)
initiator = true;
+ srand(time(NULL));
+
#ifdef HAVE_MINGW
static struct WSAData wsa_state;
if(WSAStartup(MAKEWORD(2, 2), &wsa_state))
@@ -202,6 +252,10 @@ int main(int argc, char *argv[]) {
char hex[len * 2 + 1];
bin2hex(buf, hex, len);
fprintf(stderr, "Received %d bytes of data:\n%s\n", (int)len, hex);
+ if((rand() % 100) < packetloss) {
+ fprintf(stderr, "Dropped.\n");
+ continue;
+ }
if(!sptps_receive_data(&s, buf, len))
return 1;
}
--
2.39.5