/*
This file is part of GNUnet.
- (C) 2010, 2011, 2012 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2010, 2011, 2012 GNUnet e.V.
Copyright (c) 2007, 2008, Andy Green <andy@warmcat.com>
- Copyright (C) 2009 Thomas d'Otreppe
+ Copyright Copyright (C) 2009 Thomas d'Otreppe
- 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 Affero General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
- 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.
+ SPDX-License-Identifier: AGPL3.0-or-later
*/
/**
* @file src/transport/gnunet-helper-transport-wlan.c
* parts taken from aircrack-ng, parts changend.
*/
#include "gnunet_config.h"
+#define SOCKTYPE int
+#define FDTYPE int
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include "plugin_transport_wlan.h"
/**
- * Packet format type for the messages we receive from
+ * 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
+#define ARPHRD_ETHER 1
/**
- * Packet format type for the messages we receive from
+ * Packet format type for the messages we receive from
* the kernel. This is for plain messages (with no
* performance information included).
*/
/**
- * Packet format type for the messages we receive from
+ * Packet format type for the messages we receive from
* the kernel. This is for the PRISM format.
*/
#define ARPHRD_IEEE80211_PRISM 802
/**
- * Packet format type for the messages we receive from
+ * Packet format type for the messages we receive from
* the kernel. This is for messages with a
* 'struct Ieee80211RadiotapHeader' (see below).
*/
* Drivers appear to use a 64bit counter to hold mactime internal
* the then fill the prism header with the lower 32 bits
*/
-#define PRISM_DID_MACTIME 0x2041
+#define PRISM_DID_MACTIME 0x2041
/**
* Channel element
*/
-#define PRISM_DID_CHANNEL 0x3041
+#define PRISM_DID_CHANNEL 0x3041
/**
* Signal element. Should be the signal strength in dbm, some people
* suggest that instead "100 - (strength in dbm)" is used (to make this
* a positive integer).
*/
-#define PRISM_DID_SIGNAL 0x6041
+#define PRISM_DID_SIGNAL 0x6041
/**
* Noise element
*/
-#define PRISM_DID_NOISE 0x7041
+#define PRISM_DID_NOISE 0x7041
/**
* Rate element, in units/multiples of 500Khz
*/
-#define PRISM_DID_RATE 0x8041
+#define PRISM_DID_RATE 0x8041
/**
* Value is set (supplied)
*/
-#define PRISM_STATUS_OK 0
+#define PRISM_STATUS_OK 0
/**
* Value not supplied.
* This has a different ID for each parameter, see
* PRISM_DID_* constants.
*/
- uint32_t did;
-
+ uint32_t did;
+
/**
* See PRISM_STATUS_*-constants. Note that they are unusual: 0 = set; 1 = not set
*/
- uint16_t status;
-
+ uint16_t status;
+
/**
* length of data (which is always a uint32_t, but presumably this can be used
* to specify that fewer bytes are used (with values in 'len' from 0-4). We
* ignore this field.
*/
- uint16_t len;
+ uint16_t len;
/**
* The data value
*/
- uint32_t data;
+ uint32_t data;
} __attribute__ ((packed));
* We expect this to be a PRISM_MSGCODE_*.
*/
uint32_t msgcode;
-
+
/**
* The length of the entire header.
*/
- uint32_t msglen;
+ uint32_t msglen;
/**
* Name of the device that captured the packet.
*/
IEEE80211_RADIOTAP_DBM_TX_POWER = 10,
- /**
+ /**
* IEEE80211_RADIOTAP_ANTENNA uint8_t antenna index
*
* Unitless indication of the Rx/Tx antenna for this packet.
*/
IEEE80211_RADIOTAP_RX_FLAGS = 14,
- /**
+ /**
* IEEE80211_RADIOTAP_TX_FLAGS __le16 bitmap
*
- * Properties of transmitted frames. See flags defined below.
+ * Properties of transmitted frames. See flags defined below.
*/
IEEE80211_RADIOTAP_TX_FLAGS = 15,
};
/**
- * Bitmask indicating an extension of the bitmask is used.
+ * Bitmask indicating an extension of the bitmask is used.
* (Mask corresponding to IEEE80211_RADIOTAP_EXT).
*/
#define IEEE80211_RADIOTAP_PRESENT_EXTEND_MASK (1 << IEEE80211_RADIOTAP_EXT)
*
* Frame was sent/received with short preamble
*/
-#define IEEE80211_RADIOTAP_F_SHORTPRE 0x02
+#define IEEE80211_RADIOTAP_F_SHORTPRE 0x02
/**
* Bit in IEEE80211_RADIOTAP_FLAGS (which we might get
*
* Frame was sent/received with WEP encryption
*/
-#define IEEE80211_RADIOTAP_F_WEP 0x04
+#define IEEE80211_RADIOTAP_F_WEP 0x04
/**
* Bit in IEEE80211_RADIOTAP_FLAGS (which we might get
*
* Frame was sent/received with fragmentation
*/
-#define IEEE80211_RADIOTAP_F_FRAG 0x08
+#define IEEE80211_RADIOTAP_F_FRAG 0x08
/**
* Bit in IEEE80211_RADIOTAP_FLAGS (which we might get
*
* Frame includes FCS (CRC at the end that needs to be removeD).
*/
-#define IEEE80211_RADIOTAP_F_FCS 0x10
+#define IEEE80211_RADIOTAP_F_FCS 0x10
/**
* Bit in IEEE80211_RADIOTAP_FLAGS (which we might get
* Frame has padding between 802.11 header and payload
* (to 32-bit boundary)
*/
-#define IEEE80211_RADIOTAP_F_DATAPAD 0x20
+#define IEEE80211_RADIOTAP_F_DATAPAD 0x20
/**
* For IEEE80211_RADIOTAP_RX_FLAGS:
* frame failed crc check
*/
-#define IEEE80211_RADIOTAP_F_RX_BADFCS 0x0001
+#define IEEE80211_RADIOTAP_F_RX_BADFCS 0x0001
/**
* For IEEE80211_RADIOTAP_TX_FLAGS ('txflags' in 'struct RadiotapTransmissionHeader'):
* failed due to excessive retries
*/
-#define IEEE80211_RADIOTAP_F_TX_FAIL 0x0001
+#define IEEE80211_RADIOTAP_F_TX_FAIL 0x0001
/**
* For IEEE80211_RADIOTAP_TX_FLAGS ('txflags' in 'struct RadiotapTransmissionHeader'):
* used cts 'protection'
*/
-#define IEEE80211_RADIOTAP_F_TX_CTS 0x0002
+#define IEEE80211_RADIOTAP_F_TX_CTS 0x0002
/**
* For IEEE80211_RADIOTAP_TX_FLAGS ('txflags' in 'struct RadiotapTransmissionHeader'):
- * used rts/cts handshake
+ * used rts/cts handshake
*/
-#define IEEE80211_RADIOTAP_F_TX_RTS 0x0004
+#define IEEE80211_RADIOTAP_F_TX_RTS 0x0004
/**
* For IEEE80211_RADIOTAP_TX_FLAGS ('txflags' in 'struct RadiotapTransmissionHeader'):
/**
* For IEEE80211_RADIOTAP_TX_FLAGS ('txflags' in 'struct RadiotapTransmissionHeader'):
- * sequence number handled by userspace
+ * sequence number handled by userspace
*/
#define IEEE80211_RADIOTAP_F_TX_NOSEQ 0x0010
uint8_t it_version;
/**
- * Padding. Set to 0.
+ * Padding. Set to 0.
*/
uint8_t it_pad;
/**
- * Format of the header we need to prepend to messages to be sent to the
+ * Format of the header we need to prepend to messages to be sent to the
* Kernel.
*/
struct RadiotapTransmissionHeader
* destination? Always smaller than 'size'.
*/
size_t pos;
-
+
/**
* Buffered data; twice the maximum allowed message size as we add some
* headers.
* @param cls closure
* @param message the actual message
*/
-typedef void (*MessageTokenizerCallback) (void *cls,
+typedef void (*MessageTokenizerCallback) (void *cls,
const struct
GNUNET_MessageHeader *
message);
delta =
GNUNET_MIN (sizeof (struct GNUNET_MessageHeader) -
(mst->pos - mst->off), size);
- memcpy (&ibuf[mst->pos], buf, delta);
+ GNUNET_memcpy (&ibuf[mst->pos], buf, delta);
mst->pos += delta;
buf += delta;
size -= delta;
if (mst->pos - mst->off < want)
{
delta = GNUNET_MIN (want - (mst->pos - mst->off), size);
- memcpy (&ibuf[mst->pos], buf, delta);
+ GNUNET_memcpy (&ibuf[mst->pos], buf, delta);
mst->pos += delta;
buf += delta;
size -= delta;
"Assertion failed\n");
exit (1);
}
- memcpy (&ibuf[mst->pos], buf, size);
+ GNUNET_memcpy (&ibuf[mst->pos], buf, size);
mst->pos += size;
}
return ret;
*/
static int
ieee80211_radiotap_iterator_init (struct Ieee80211RadiotapHeaderIterator *iterator,
- const struct Ieee80211RadiotapHeader *radiotap_header,
+ const struct Ieee80211RadiotapHeader *radiotap_header,
size_t max_length)
{
if ( (iterator == NULL) ||
/* need padding (by 'wanted_alignment - unalignment') */
iterator->arg_index += wanted_alignment - unalignment;
}
-
+
/*
* this is what we will return to user, but we need to
* move on first so next call has something fresh to test
- */
+ */
iterator->this_arg_index = iterator->arg_index;
iterator->this_arg = iterator->arg;
/* internally move on the size of this arg (using lower nybble from
- the table) */
+ the table) */
iterator->arg += rt_sizes[iterator->arg_index] & 0x0f;
-
+
/*
* check for insanity where we are given a bitmap that
* claims to have more arg content than the length of the
* radiotap section. We will normally end up equalling this
* max_length on the last arg, never exceeding it.
- */
+ */
if ((((void *) iterator->arg) - ((void *) iterator->rtheader)) > iterator->max_length)
- return -1;
+ return -1;
}
/* Now, move on to next bit / next entry */
}
}
else
- {
+ {
/* just try the next bit (while loop will move on) */
iterator->bitmap_shifter >>= 1;
}
if (((crc) & 0xFF) == buf[0] && ((crc >> 8) & 0xFF) == buf[1] &&
((crc >> 16) & 0xFF) == buf[2] && ((crc >> 24) & 0xFF) == buf[3])
return 0;
- return 1;
+ return 1;
}
* @return number of bytes written to 'buf'
*/
static ssize_t
-linux_read (struct HardwareInfos *dev,
+linux_read (struct HardwareInfos *dev,
unsigned char *buf, size_t buf_size,
struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage *ri)
{
return -1;
}
- memset (ri, 0, sizeof (*ri));
+ memset (ri, 0, sizeof (*ri));
switch (dev->arptype_in)
{
case ARPHRD_IEEE80211_PRISM:
while (left > sizeof (struct PrismValue))
{
left -= sizeof (struct PrismValue);
- memcpy (&pv, pos, sizeof (struct PrismValue));
+ GNUNET_memcpy (&pv, pos, sizeof (struct PrismValue));
pos += sizeof (struct PrismValue);
switch (pv.did)
break;
}
}
- }
+ }
if ( (n < 8) || (n >= caplen) )
return 0; /* invalid format */
}
if (!got_signal)
{
ri->ri_power = * ((int8_t*) iterator.this_arg);
- got_signal = 1;
+ got_signal = 1;
}
break;
case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
break;
} /* end of 'switch' */
} /* end of the 'while' loop */
- }
+ }
break;
case ARPHRD_IEEE80211:
n = 0; /* no header */
{
if (sizeof (struct GNUNET_TRANSPORT_WLAN_Ieee8023Frame) > caplen)
return 0; /* invalid */
- memcpy (&buf[sizeof (struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame)],
+ GNUNET_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;
ri->ri_channel = linux_get_channel (dev);
/* detect CRC32 at the end, even if the flag wasn't set and remove it */
- if ( (0 == fcs_removed) &&
- (0 == check_crc_buf_osdep (tmpbuf + n, caplen - sizeof (uint32_t))) )
+ if ( (0 == fcs_removed) &&
+ (0 == check_crc_buf_osdep (tmpbuf + n, caplen - sizeof (uint32_t))) )
{
/* NOTE: this heuristic can of course fail if there happens to
be a matching checksum at the end. Would be good to have
caplen -= sizeof (uint32_t);
}
/* copy payload to target buffer */
- memcpy (buf, tmpbuf + n, caplen);
+ GNUNET_memcpy (buf, tmpbuf + n, caplen);
return caplen;
}
return 1;
}
- memcpy (&dev->pl_mac, ifr.ifr_hwaddr.sa_data, MAC_ADDR_SIZE);
+ GNUNET_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_ETHER) &&
(ifr.ifr_hwaddr.sa_family != ARPHRD_IEEE80211) &&
setsockopt (dev->fd_raw, SOL_PACKET, PACKET_ADD_MEMBERSHIP, &mr,
sizeof (mr)))
{
- fprintf (stderr,
+ fprintf (stderr,
"Failed to enable promiscuous mode on interface `%.*s'\n",
- IFNAMSIZ,
+ IFNAMSIZ,
dev->iface);
return 1;
}
struct stat sbuf;
int ret;
- ret = snprintf (strbuf, sizeof (strbuf),
+ ret = snprintf (strbuf, sizeof (strbuf),
"/sys/class/net/%s/phy80211/subsystem",
iface);
if ((ret < 0) || (ret >= sizeof (strbuf)) || (0 != stat (strbuf, &sbuf)))
{
- fprintf (stderr,
- "Did not find 802.11 interface `%s'. Exiting.\n",
+ fprintf (stderr,
+ "Did not find 802.11 interface `%s'. Exiting.\n",
iface);
exit (1);
}
sendsize = ntohs (hdr->size);
if ( (sendsize <
sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage)) ||
- (GNUNET_MESSAGE_TYPE_WLAN_DATA_TO_HELPER != ntohs (hdr->type)) )
+ (GNUNET_MESSAGE_TYPE_WLAN_DATA_TO_HELPER != ntohs (hdr->type)) )
{
fprintf (stderr, "Received malformed message\n");
exit (1);
case ARPHRD_IEEE80211_FULL:
case ARPHRD_IEEE80211:
rtheader.header.it_version = 0;
- rtheader.header.it_pad = 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.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);
+ GNUNET_memcpy (write_pout.buf, &rtheader, sizeof (rtheader));
+ GNUNET_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
/* etheader.src = header->frame.addr2; --- untrusted input */
etheader.src = dev->pl_mac;
etheader.type = htons (ETH_P_IP);
- memcpy (write_pout.buf, ðeader, sizeof (etheader));
- memcpy (&write_pout.buf[sizeof (etheader)], &header[1], sendsize - sizeof (struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame));
+ GNUNET_memcpy (write_pout.buf, ðeader, sizeof (etheader));
+ GNUNET_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:
int stdin_open;
struct MessageStreamTokenizer *stdin_mst;
int raw_eno;
- uid_t uid;
/* assert privs so we can modify the firewall rules! */
- uid = getuid ();
-#ifdef HAVE_SETRESUID
- if (0 != setresuid (uid, 0, 0))
{
- fprintf (stderr, "Failed to setresuid to root: %s\n", strerror (errno));
- return 254;
- }
+#ifdef HAVE_SETRESUID
+ uid_t uid = getuid ();
+
+ if (0 != setresuid (uid, 0, 0))
+ {
+ fprintf (stderr,
+ "Failed to setresuid to root: %s\n",
+ strerror (errno));
+ return 254;
+ }
#else
- if (0 != seteuid (0))
- {
- fprintf (stderr, "Failed to seteuid back to root: %s\n", strerror (errno));
- return 254;
- }
+ if (0 != seteuid (0))
+ {
+ fprintf (stderr,
+ "Failed to seteuid back to root: %s\n", strerror (errno));
+ return 254;
+ }
#endif
+ }
/* make use of SGID capabilities on POSIX */
memset (&dev, 0, sizeof (dev));
macmsg.hdr.size = htons (sizeof (macmsg));
macmsg.hdr.type = htons (GNUNET_MESSAGE_TYPE_WLAN_HELPER_CONTROL);
- memcpy (&macmsg.mac, &dev.pl_mac, sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress));
- memcpy (write_std.buf, &macmsg, sizeof (macmsg));
+ GNUNET_memcpy (&macmsg.mac, &dev.pl_mac, sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress));
+ GNUNET_memcpy (write_std.buf, &macmsg, sizeof (macmsg));
write_std.size = sizeof (macmsg);
- }
+ }
- stdin_mst = mst_create (&stdin_send_hw, &dev);
+ stdin_mst = mst_create (&stdin_send_hw, &dev);
stdin_open = 1;
while (1)
{
if (FD_ISSET (dev.fd_raw, &wfds))
{
ssize_t ret =
- write (dev.fd_raw, write_pout.buf + write_std.pos,
+ write (dev.fd_raw, write_pout.buf + write_pout.pos,
write_pout.size - write_pout.pos);
if (0 > ret)
{
if (FD_ISSET (STDIN_FILENO, &rfds))
{
- ssize_t ret =
+ ssize_t ret =
read (STDIN_FILENO, readbuf, sizeof (readbuf));
if (0 > ret)
{
rrm = (struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage *) write_std.buf;
ret =
linux_read (&dev, (unsigned char *) &rrm->frame,
- sizeof (write_std.buf)
- - sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage)
- + sizeof (struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame),
+ sizeof (write_std.buf)
+ - sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage)
+ + sizeof (struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame),
rrm);
if (0 > ret)
{
}
if ((0 < ret) && (0 == mac_test (&rrm->frame, &dev)))
{
- write_std.size = ret
- + sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage)
+ write_std.size = ret
+ + sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage)
- sizeof (struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame);
rrm->header.size = htons (write_std.size);
rrm->header.type = htons (GNUNET_MESSAGE_TYPE_WLAN_DATA_FROM_HELPER);
projects / oweals / gnunet.git / blobdiff