/*
This file is part of GNUnet
- (C) 2011 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2011 GNUnet e.V.
- GNUnet is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published
- by the Free Software Foundation; either version 3, or (at your
- option) any later version.
+ GNUnet is free software: you can redistribute it and/or modify it
+ under the terms of the GNU Affero General Public License as published
+ by the Free Software Foundation, either version 3 of the License,
+ or (at your option) any later version.
GNUnet 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.
+ Affero General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with GNUnet; see the file COPYING. If not, write to the
- Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
+ You should have received a copy of the GNU Affero General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+ SPDX-License-Identifier: AGPL3.0-or-later
*/
/**
* @author David Brodski
*/
#include "platform.h"
-#include "gnunet_protocols.h"
#include "plugin_transport_wlan.h"
+#include "gnunet_protocols.h"
#define WLAN_MTU 1500
#define IEEE80211_FC0_TYPE_CTL 0x04
#define IEEE80211_FC0_TYPE_DATA 0x08
-GNUNET_NETWORK_STRUCT_BEGIN
-
-/*
- * generic definitions for IEEE 802.11 frames
- */
-struct ieee80211_frame
-{
- u_int8_t i_fc[2];
- u_int8_t i_dur[2];
- u_int8_t i_addr1[IEEE80211_ADDR_LEN];
- u_int8_t i_addr2[IEEE80211_ADDR_LEN];
- u_int8_t i_addr3[IEEE80211_ADDR_LEN];
- u_int8_t i_seq[2];
- u_int8_t llc[4];
-} GNUNET_PACKED;
-GNUNET_NETWORK_STRUCT_END
/**
* function to fill the radiotap header
* @param header pointer to the radiotap header
+ * @param size total message size
* @return GNUNET_YES at success
*/
static int
-getRadiotapHeader (struct Radiotap_Send *header)
+getRadiotapHeader (struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage *header,
+ uint16_t size)
{
+ header->header.size = htons (size);
+ header->header.type = htons (GNUNET_MESSAGE_TYPE_WLAN_DATA_TO_HELPER);
header->rate = 255;
header->tx_power = 0;
header->antenna = 0;
-
return GNUNET_YES;
}
* @return GNUNET_YES if there was no error
*/
static int
-getWlanHeader (struct ieee80211_frame *Header, const char *to_mac_addr,
- const char *mac, unsigned int size)
+getWlanHeader (struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame *Header,
+ const struct GNUNET_TRANSPORT_WLAN_MacAddress *to_mac_addr,
+ const struct GNUNET_TRANSPORT_WLAN_MacAddress *mac, unsigned int size)
{
- uint16_t *tmp16;
const int rate = 11000000;
- Header->i_fc[0] = IEEE80211_FC0_TYPE_DATA;
- Header->i_fc[1] = 0x00;
- memcpy (&Header->i_addr3, &mac_bssid_gnunet, sizeof (mac_bssid_gnunet));
- memcpy (&Header->i_addr2, mac, sizeof (mac_bssid_gnunet));
- memcpy (&Header->i_addr1, to_mac_addr, sizeof (mac_bssid_gnunet));
-
- tmp16 = (uint16_t *) Header->i_dur;
- *tmp16 = (uint16_t) GNUNET_htole16 ((size * 1000000) / rate + 290);
+ Header->frame_control = htons (IEEE80211_FC0_TYPE_DATA);
+ Header->addr3 = mac_bssid_gnunet;
+ Header->addr2 = *mac;
+ Header->addr1 = *to_mac_addr;
+ Header->duration = GNUNET_htole16 ((size * 1000000) / rate + 290);
Header->llc[0] = WLAN_LLC_DSAP_FIELD;
Header->llc[1] = WLAN_LLC_SSAP_FIELD;
-
+ Header->llc[2] = 0; // FIXME
+ Header->llc[3] = 0; // FIXME
return GNUNET_YES;
}
main (int argc, char *argv[])
{
char msg_buf[WLAN_MTU];
- struct GNUNET_MessageHeader *msg;
- struct ieee80211_frame *wlan_header;
- struct Radiotap_Send *radiotap;
-
+ struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage *radiotap;
unsigned int temp[6];
- char inmac[6];
- char outmac[6];
- int pos;
- long long count;
+ struct GNUNET_TRANSPORT_WLAN_MacAddress inmac;
+ struct GNUNET_TRANSPORT_WLAN_MacAddress outmac;
+ struct GNUNET_TRANSPORT_WLAN_HelperControlMessage hcm;
+ unsigned long long count;
double bytes_per_s;
time_t start;
time_t akt;
int i;
+ ssize_t ret;
+ pid_t pid;
+ int commpipe[2]; /* This holds the fd for the input & output of the pipe */
+ int macpipe[2]; /* This holds the fd for the input & output of the pipe */
if (4 != argc)
{
fprintf (stderr,
"This program must be started with the interface and the targets and source mac as argument.\n");
fprintf (stderr,
- "Usage: interface-name mac-target mac-source\n"
+ "Usage: interface-name mac-DST mac-SRC\n"
"e.g. mon0 11-22-33-44-55-66 12-34-56-78-90-ab\n");
return 1;
}
if (6 !=
- sscanf (argv[3], "%x-%x-%x-%x-%x-%x", &temp[0], &temp[1], &temp[2],
+ SSCANF (argv[2], "%x-%x-%x-%x-%x-%x", &temp[0], &temp[1], &temp[2],
&temp[3], &temp[4], &temp[5]))
{
fprintf (stderr,
- "Usage: interface-name mac-target mac-source\n"
+ "Usage: interface-name mac-DST mac-SRC\n"
"e.g. mon0 11-22-33-44-55-66 12-34-56-78-90-ab\n");
return 1;
}
+ for (i = 0; i < 6; i++)
+ outmac.mac[i] = temp[i];
if (6 !=
- sscanf (argv[2], "%x-%x-%x-%x-%x-%x", &temp[0], &temp[1], &temp[2],
+ SSCANF (argv[3], "%x-%x-%x-%x-%x-%x", &temp[0], &temp[1], &temp[2],
&temp[3], &temp[4], &temp[5]))
{
fprintf (stderr,
- "Usage: interface-name mac-target mac-source\n"
+ "Usage: interface-name mac-DST mac-SRC\n"
"e.g. mon0 11-22-33-44-55-66 12-34-56-78-90-ab\n");
return 1;
}
for (i = 0; i < 6; i++)
- inmac[i] = temp[i];
- for (i = 0; i < 6; i++)
- outmac[i] = temp[i];
+ inmac.mac[i] = temp[i];
- pid_t pid;
- int commpipe[2]; /* This holds the fd for the input & output of the pipe */
/* Setup communication pipeline first */
if (pipe (commpipe))
{
- fprintf (stderr,
+ fprintf (stderr,
+ "Failed to create pipe: %s\n",
+ STRERROR (errno));
+ exit (1);
+ }
+ if (pipe (macpipe))
+ {
+ fprintf (stderr,
"Failed to create pipe: %s\n",
STRERROR (errno));
exit (1);
/* Attempt to fork and check for errors */
if ((pid = fork ()) == -1)
{
- fprintf (stderr, "Failed to fork: %s\n",
- STRERROR (errno));
+ fprintf (stderr, "Failed to fork: %s\n",
+ STRERROR (errno));
exit (1);
}
-
+ memset (msg_buf, 0x42, sizeof (msg_buf));
if (pid)
{
/* A positive (non-negative) PID indicates the parent process */
- close (commpipe[0]); /* Close unused side of pipe (in side) */
+ if (0 != close (commpipe[0])) /* Close unused side of pipe (in side) */
+ fprintf (stderr,
+ "Failed to close fd: %s\n",
+ strerror (errno));
setvbuf (stdout, (char *) NULL, _IONBF, 0); /* Set non-buffered output on stdout */
-
- msg = (struct GNUNET_MessageHeader *) msg_buf;
- msg->type = htons (GNUNET_MESSAGE_TYPE_WLAN_HELPER_DATA);
- msg->size = htons (WLAN_MTU);
- radiotap = (struct Radiotap_Send *) &msg[1];
- wlan_header = (struct ieee80211_frame *) &radiotap[1];
- pos = 0;
-
- getRadiotapHeader (radiotap);
- getWlanHeader (wlan_header, outmac, inmac,
- WLAN_MTU - sizeof (struct GNUNET_MessageHeader));
-
+ if (0 != close (macpipe[1]))
+ fprintf (stderr,
+ "Failed to close fd: %s\n",
+ strerror (errno));
+ if (sizeof (hcm) != read (macpipe[0], &hcm, sizeof (hcm)))
+ fprintf (stderr,
+ "Failed to read hcm...\n");
+ fprintf (stderr,
+ "Got MAC %.2X:%.2X:%.2X:%.2X:%.2X:%.2X\n",
+ hcm.mac.mac[0], hcm.mac.mac[1],
+ hcm.mac.mac[2], hcm.mac.mac[3], hcm.mac.mac[4], hcm.mac.mac[5]);
+ radiotap = (struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage *) msg_buf;
+ getRadiotapHeader (radiotap, WLAN_MTU);
+ getWlanHeader (&radiotap->frame, &outmac, &inmac,
+ WLAN_MTU);
start = time (NULL);
count = 0;
while (1)
{
- pos += write (commpipe[1], msg, WLAN_MTU - pos);
- if (pos % WLAN_MTU == 0)
+ ret = write (commpipe[1], msg_buf, WLAN_MTU);
+ if (0 > ret)
{
- pos = 0;
- count++;
-
- if (count % 1000 == 0)
- {
- akt = time (NULL);
- bytes_per_s = count * WLAN_MTU / (akt - start);
- bytes_per_s /= 1024;
- printf ("send %f kbytes/s\n", bytes_per_s);
- }
+ fprintf (stderr, "write failed: %s\n", strerror (errno));
+ break;
+ }
+ count += ret;
+ akt = time (NULL);
+ if (akt - start > 30)
+ {
+ bytes_per_s = count / (akt - start);
+ bytes_per_s /= 1024;
+ printf ("send %f kbytes/s\n", bytes_per_s);
+ start = akt;
+ count = 0;
}
-
}
}
else
{
/* A zero PID indicates that this is the child process */
(void) close (0);
+ (void) close (1);
if (-1 == dup2 (commpipe[0], 0)) /* Replace stdin with the in side of the pipe */
fprintf (stderr, "dup2 failed: %s\n", strerror (errno));
+ if (-1 == dup2 (macpipe[1], 1)) /* Replace stdout with the out side of the pipe */
+ fprintf (stderr, "dup2 failed: %s\n", strerror (errno));
(void) close (commpipe[1]); /* Close unused side of pipe (out side) */
+ (void) close (macpipe[0]); /* Close unused side of pipe (in side) */
/* Replace the child fork with a new process */
- if (execl
+ if (execlp
("gnunet-helper-transport-wlan", "gnunet-helper-transport-wlan",
argv[1], NULL) == -1)
{
projects / oweals / gnunet.git / blobdiff