- fix

[oweals/gnunet.git] / src / transport / gnunet-transport-wlan-sender.c

diff --git a/src/transport/gnunet-transport-wlan-sender.c b/src/transport/gnunet-transport-wlan-sender.c
index e845d48621ea2a0a812db5e85a9290458a501890..05d1d1eef6031149c46a1bb68a5b64f239f75b4e 100644 (file)
--- a/src/transport/gnunet-transport-wlan-sender.c
+++ b/src/transport/gnunet-transport-wlan-sender.c
@@ -101,47 +101,49 @@ main (int argc, char *argv[])
   unsigned int temp[6];
   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.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))
@@ -151,6 +153,13 @@ main (int argc, char *argv[])
             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)
@@ -169,7 +178,17 @@ main (int argc, char *argv[])
               strerror (errno));
     setvbuf (stdout, (char *) NULL, _IONBF, 0); /* Set non-buffered output on stdout */
 
-
+    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,
@@ -200,9 +219,13 @@ main (int argc, char *argv[])
   {
     /* 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 (execlp
         ("gnunet-helper-transport-wlan", "gnunet-helper-transport-wlan",