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sptps_test: allow using a tun device instead of stdio.

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This commit is contained in:
Guus Sliepen 2014-04-15 17:26:08 +02:00
parent 2980173ee7
commit 475088ed77
1 changed files with 46 additions and 5 deletions
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51
src/sptps_test.c
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@ -19,6 +19,10 @@
#include "system.h"
#ifdef HAVE_LINUX
#include <linux/if_tun.h>
#endif
#include <getopt.h>
#include "crypto.h"
@ -36,6 +40,8 @@ struct timeval now;
static bool verbose;
static bool readonly;
static bool writeonly;
static int in = 0;
static int out = 1;
static bool send_data(void *handle, uint8_t type, const char *data, size_t len) {
char hex[len * 2 + 1];
@ -52,7 +58,7 @@ static bool receive_record(void *handle, uint8_t type, const char *data, uint16_
if(verbose)
fprintf(stderr, "Received type %d record of %hu bytes:\n", type, len);
if(!writeonly)
fwrite(data, len, 1, stdout);
write(out, data, len);
return true;
}
@ -76,6 +82,9 @@ static void usage() {
" -d, --datagram Enable datagram mode.\n"
" -q, --quit Quit when EOF occurs on stdin.\n"
" -r, --readonly Only send data from the socket to stdout.\n"
#ifdef HAVE_LINUX
" -t, --tun Use a tun device instead of stdio.\n"
#endif
" -w, --writeonly Only send data from stdin to the socket.\n"
" -L, --packet-loss RATE Fake packet loss of RATE percent.\n"
" -R, --replay-window N Set replay window to N bytes.\n"
@ -88,13 +97,16 @@ int main(int argc, char *argv[]) {
program_name = argv[0];
bool initiator = false;
bool datagram = false;
#ifdef HAVE_LINUX
bool tun = false;
#endif
int packetloss = 0;
int r;
int option_index = 0;
ecdsa_t *mykey = NULL, *hiskey = NULL;
bool quit = false;
while((r = getopt_long(argc, argv, "dqrwL:W:v", long_options, &option_index)) != EOF) {
while((r = getopt_long(argc, argv, "dqrtwL:W:v", long_options, &option_index)) != EOF) {
switch (r) {
case 0: /* long option */
break;
@ -111,6 +123,16 @@ int main(int argc, char *argv[]) {
readonly = true;
break;
case 't': /* read only */
#ifdef HAVE_LINUX
tun = true;
#else
fprintf(stderr, "--tun is only supported on Linux.\n");
usage();
return 1;
#endif
break;
case 'w': /* write only */
writeonly = true;
break;
@ -154,6 +176,25 @@ int main(int argc, char *argv[]) {
srand(time(NULL));
#ifdef HAVE_LINUX
if(tun) {
in = out = open("/dev/net/tun", O_RDWR | O_NONBLOCK);
if(in < 0) {
fprintf(stderr, "Could not open tun device: %s\n", strerror(errno));
return 1;
}
struct ifreq ifr = {
.ifr_flags = IFF_TUN
};
if(ioctl(in, TUNSETIFF, &ifr)) {
fprintf(stderr, "Could not configure tun interface: %s\n", strerror(errno));
return 1;
}
ifr.ifr_name[IFNAMSIZ - 1] = 0;
fprintf(stderr, "Using tun interface %s\n", ifr.ifr_name);
}
#endif
#ifdef HAVE_MINGW
static struct WSAData wsa_state;
if(WSAStartup(MAKEWORD(2, 2), &wsa_state))
@ -256,14 +297,14 @@ int main(int argc, char *argv[]) {
FD_ZERO(&fds);
#ifndef HAVE_MINGW
if(!readonly && s.instate)
FD_SET(0, &fds);
FD_SET(in, &fds);
#endif
FD_SET(sock, &fds);
if(select(sock + 1, &fds, NULL, NULL, NULL) <= 0)
return 1;
if(FD_ISSET(0, &fds)) {
ssize_t len = read(0, buf, sizeof buf);
if(FD_ISSET(in, &fds)) {
ssize_t len = read(in, buf, sizeof buf);
if(len < 0) {
fprintf(stderr, "Could not read from stdin: %s\n", strerror(errno));
return 1;