- verboser log, faster start

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

diff --git a/src/transport/gnunet-helper-transport-wlan.c b/src/transport/gnunet-helper-transport-wlan.c
index 515da4334080c2c04d0ace52b637c034a17d1bb3..3ad4d64c424dbbf6433b4015d971e47328037e0e 100644 (file)
--- a/src/transport/gnunet-helper-transport-wlan.c
+++ b/src/transport/gnunet-helper-transport-wlan.c
@@ -137,6 +137,14 @@
 #include "gnunet_protocols.h"
 #include "plugin_transport_wlan.h"
 
+/**
+ * Packet format type for the messages we receive from 
+ * the kernel.  This is for Ethernet 10Mbps format (no
+ * performance information included).
+ */
+#define ARPHRD_ETHER        1 
+
+
 /**
  * Packet format type for the messages we receive from 
  * the kernel.  This is for plain messages (with no
@@ -144,6 +152,7 @@
  */
 #define ARPHRD_IEEE80211        801
 
+
 /**
  * Packet format type for the messages we receive from 
  * the kernel.  This is for the PRISM format.
@@ -1588,6 +1597,15 @@ linux_read (struct HardwareInfos *dev,
   case ARPHRD_IEEE80211:
     n = 0; /* no header */
     break;
+  case ARPHRD_ETHER:
+    {
+      if (sizeof (struct GNUNET_TRANSPORT_WLAN_Ieee8023Frame) > caplen)
+       return 0; /* invalid */
+      memcpy (&buf[sizeof (struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame)],
+             tmpbuf + sizeof (struct GNUNET_TRANSPORT_WLAN_Ieee8023Frame),
+             caplen - sizeof (struct GNUNET_TRANSPORT_WLAN_Ieee8023Frame) - 4 /* 4 byte FCS */);
+      return caplen - sizeof (struct GNUNET_TRANSPORT_WLAN_Ieee8023Frame) - 4;
+    }      
   default:
     errno = ENOTSUP; /* unsupported format */
     return -1;
@@ -1652,6 +1670,7 @@ open_device_raw (struct HardwareInfos *dev)
     return 1;
   }
   if (((ifr.ifr_hwaddr.sa_family != ARPHRD_IEEE80211) &&
+       (ifr.ifr_hwaddr.sa_family != ARPHRD_ETHER) &&
        (ifr.ifr_hwaddr.sa_family != ARPHRD_IEEE80211_PRISM) &&
        (ifr.ifr_hwaddr.sa_family != ARPHRD_IEEE80211_FULL)) )
   {
@@ -1712,7 +1731,8 @@ open_device_raw (struct HardwareInfos *dev)
 
   memcpy (&dev->pl_mac, ifr.ifr_hwaddr.sa_data, MAC_ADDR_SIZE);
   dev->arptype_in = ifr.ifr_hwaddr.sa_family;
-  if ((ifr.ifr_hwaddr.sa_family != ARPHRD_IEEE80211) &&
+  if ((ifr.ifr_hwaddr.sa_family != ARPHRD_ETHER) &&
+      (ifr.ifr_hwaddr.sa_family != ARPHRD_IEEE80211) &&
       (ifr.ifr_hwaddr.sa_family != ARPHRD_IEEE80211_PRISM) &&
       (ifr.ifr_hwaddr.sa_family != ARPHRD_IEEE80211_FULL))
   {
@@ -1778,6 +1798,12 @@ static int
 mac_test (const struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame *taIeeeHeader,
           const struct HardwareInfos *dev)
 {
+  static struct GNUNET_TRANSPORT_WLAN_MacAddress all_zeros;
+
+  if ( (0 == memcmp (&taIeeeHeader->addr3, &all_zeros, MAC_ADDR_SIZE)) ||
+       (0 == memcmp (&taIeeeHeader->addr1, &all_zeros, MAC_ADDR_SIZE)) )
+    return 0; /* some drivers set no Macs, then assume it is all for us! */
+
   if (0 != memcmp (&taIeeeHeader->addr3, &mac_bssid_gnunet, MAC_ADDR_SIZE))
     return 1; /* not a GNUnet ad-hoc package */
   if ( (0 == memcmp (&taIeeeHeader->addr1, &dev->pl_mac, MAC_ADDR_SIZE)) ||
@@ -1819,6 +1845,7 @@ stdin_send_hw (void *cls, const struct GNUNET_MessageHeader *hdr)
   struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame *wlanheader;
   size_t sendsize;
   struct RadiotapTransmissionHeader rtheader;
+  struct GNUNET_TRANSPORT_WLAN_Ieee8023Frame etheader;
 
   sendsize = ntohs (hdr->size);
   if ( (sendsize <
@@ -1835,21 +1862,41 @@ stdin_send_hw (void *cls, const struct GNUNET_MessageHeader *hdr)
     exit (1);
   }
   header = (const struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage *) hdr;
-  rtheader.header.it_version = 0;
-  rtheader.header.it_pad = 0; 
-  rtheader.header.it_len = GNUNET_htole16 (sizeof (rtheader));
-  rtheader.header.it_present = GNUNET_htole16 (IEEE80211_RADIOTAP_OUR_TRANSMISSION_HEADER_MASK);
-  rtheader.rate = header->rate; 
-  rtheader.pad1 = 0;
-  rtheader.txflags = GNUNET_htole16 (IEEE80211_RADIOTAP_F_TX_NOACK | IEEE80211_RADIOTAP_F_TX_NOSEQ);
-  memcpy (write_pout.buf, &rtheader, sizeof (rtheader));
-  memcpy (&write_pout.buf[sizeof (rtheader)], &header->frame, sendsize);
-  wlanheader = (struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame *) &write_pout.buf[sizeof (rtheader)];
-
-  /* payload contains MAC address, but we don't trust it, so we'll
-   * overwrite it with OUR MAC address to prevent mischief */
-  mac_set (wlanheader, dev);
-  write_pout.size = sendsize + sizeof (rtheader);
+  switch (dev->arptype_in)
+  {
+  case ARPHRD_IEEE80211_PRISM:
+  case ARPHRD_IEEE80211_FULL:
+  case ARPHRD_IEEE80211:
+    rtheader.header.it_version = 0;
+    rtheader.header.it_pad = 0; 
+    rtheader.header.it_len = GNUNET_htole16 (sizeof (rtheader));
+    rtheader.header.it_present = GNUNET_htole16 (IEEE80211_RADIOTAP_OUR_TRANSMISSION_HEADER_MASK);
+    rtheader.rate = header->rate; 
+    rtheader.pad1 = 0;
+    rtheader.txflags = GNUNET_htole16 (IEEE80211_RADIOTAP_F_TX_NOACK | IEEE80211_RADIOTAP_F_TX_NOSEQ);
+    memcpy (write_pout.buf, &rtheader, sizeof (rtheader));
+    memcpy (&write_pout.buf[sizeof (rtheader)], &header->frame, sendsize);
+    wlanheader = (struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame *) &write_pout.buf[sizeof (rtheader)];
+
+    /* payload contains MAC address, but we don't trust it, so we'll
+     * overwrite it with OUR MAC address to prevent mischief */
+    mac_set (wlanheader, dev);
+    write_pout.size = sendsize + sizeof (rtheader);
+    break;
+  case ARPHRD_ETHER:
+    etheader.dst = header->frame.addr1;
+    /* etheader.src = header->frame.addr2; --- untrusted input */
+    etheader.src = dev->pl_mac;
+    etheader.type = htons (ETH_P_IP);
+    memcpy (write_pout.buf, &etheader, sizeof (etheader));
+    memcpy (&write_pout.buf[sizeof (etheader)], &header[1], sendsize - sizeof (struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame));
+    write_pout.size = sendsize - sizeof (struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame) + sizeof (etheader);
+    break;
+  default:
+    fprintf (stderr,
+            "Unsupported ARPTYPE!\n");
+    break;
+  }
 }