From: Russ Handorf Date: Mon, 22 Feb 2016 01:14:59 +0000 (-0500) Subject: Added wifi sniffer basics X-Git-Url: https://handorf.org/code/?a=commitdiff_plain;h=d6e95b6c679ed6041bb105b562acd36b56cb58eb;p=soho-sigint.git Added wifi sniffer basics --- diff --git a/README b/README index 80ad2ce..c0a5523 100644 --- a/README +++ b/README @@ -53,6 +53,7 @@ Client code runs on a RPi or BBB. Each client pushes data realtime to a MySQL DB TODO: 1. Write 802.11 sniffer / currently depends on Kismet +--Sniffer written, time to make it do some more stuff and post to REST via curl 2. Write BT sniffer / currently depends on Kismet 3. Write a better TPMS monitor / memory leak in current code. 4. Better webpage admin functions diff --git a/client-wifi/disect5/Makefile b/client-wifi/disect5/Makefile new file mode 100644 index 0000000..4f6961a --- /dev/null +++ b/client-wifi/disect5/Makefile @@ -0,0 +1,14 @@ +CFLAGS= -std=gnu99 +DEPS = endian.h +LIBS=$(LDFLAGS) -L. -lpcap +OBJ = soho-sigint-wifi.o radiotap.o + +%.o: %.c $(DEPS) + $(CC) -c -o $@ $< + +soho-sigint-wifi: $(OBJ) + $(CC) -o $@ $^ $(CFLAGS) $(LIBS) + +clean: + rm -rf *.o + rm -rf soho-sigint-wifi diff --git a/client-wifi/disect5/interface-setup.txt b/client-wifi/disect5/interface-setup.txt new file mode 100644 index 0000000..17e7045 --- /dev/null +++ b/client-wifi/disect5/interface-setup.txt @@ -0,0 +1,6 @@ +iw phy phy0 interface add mon0 type monitor +iw dev wlan0 del +ifconfig mon0 up +iw dev mon0 set freq 2412 +iw dev mon0 set freq 2437 +iw dev mon0 set freq 2462 diff --git a/client-wifi/disect5/platform.h b/client-wifi/disect5/platform.h new file mode 100644 index 0000000..980fe6f --- /dev/null +++ b/client-wifi/disect5/platform.h @@ -0,0 +1,23 @@ +#include +#include +#ifndef _BSD_SOURCE +#define _BSD_SOURCE +#endif +#ifdef __FreeBSD__ + #include +#else + #include +#endif + +#define le16_to_cpu le16toh +#define le32_to_cpu le32toh +#define get_unaligned(p) \ +({ \ + struct packed_dummy_struct { \ + typeof(*(p)) __val; \ + } __attribute__((packed)) *__ptr = (void *) (p); \ + \ + __ptr->__val; \ +}) +#define get_unaligned_le16(p) le16_to_cpu(get_unaligned((uint16_t *)(p))) +#define get_unaligned_le32(p) le32_to_cpu(get_unaligned((uint32_t *)(p))) diff --git a/client-wifi/disect5/radiotap.c b/client-wifi/disect5/radiotap.c new file mode 100644 index 0000000..8827a86 --- /dev/null +++ b/client-wifi/disect5/radiotap.c @@ -0,0 +1,396 @@ +/* + * Radiotap parser + * + * Copyright 2007 Andy Green + * Copyright 2009 Johannes Berg + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * Alternatively, this software may be distributed under the terms of BSD + * license. + * + * See COPYING for more details. + */ +#include "radiotap_iter.h" +#include "platform.h" +#if defined(ANDROID) || defined(__ANDROID__) + #include "../byteorder.h" +#endif + +/* function prototypes and related defs are in radiotap_iter.h */ + +static const struct radiotap_align_size rtap_namespace_sizes[] = { + [IEEE80211_RADIOTAP_TSFT] = { .align = 8, .size = 8, }, + [IEEE80211_RADIOTAP_FLAGS] = { .align = 1, .size = 1, }, + [IEEE80211_RADIOTAP_RATE] = { .align = 1, .size = 1, }, + [IEEE80211_RADIOTAP_CHANNEL] = { .align = 2, .size = 4, }, + [IEEE80211_RADIOTAP_FHSS] = { .align = 2, .size = 2, }, + [IEEE80211_RADIOTAP_DBM_ANTSIGNAL] = { .align = 1, .size = 1, }, + [IEEE80211_RADIOTAP_DBM_ANTNOISE] = { .align = 1, .size = 1, }, + [IEEE80211_RADIOTAP_LOCK_QUALITY] = { .align = 2, .size = 2, }, + [IEEE80211_RADIOTAP_TX_ATTENUATION] = { .align = 2, .size = 2, }, + [IEEE80211_RADIOTAP_DB_TX_ATTENUATION] = { .align = 2, .size = 2, }, + [IEEE80211_RADIOTAP_DBM_TX_POWER] = { .align = 1, .size = 1, }, + [IEEE80211_RADIOTAP_ANTENNA] = { .align = 1, .size = 1, }, + [IEEE80211_RADIOTAP_DB_ANTSIGNAL] = { .align = 1, .size = 1, }, + [IEEE80211_RADIOTAP_DB_ANTNOISE] = { .align = 1, .size = 1, }, + [IEEE80211_RADIOTAP_RX_FLAGS] = { .align = 2, .size = 2, }, + [IEEE80211_RADIOTAP_TX_FLAGS] = { .align = 2, .size = 2, }, + [IEEE80211_RADIOTAP_RTS_RETRIES] = { .align = 1, .size = 1, }, + [IEEE80211_RADIOTAP_DATA_RETRIES] = { .align = 1, .size = 1, }, + [IEEE80211_RADIOTAP_MCS] = { .align = 1, .size = 3, }, + [IEEE80211_RADIOTAP_AMPDU_STATUS] = { .align = 4, .size = 8, }, + /* + * add more here as they are defined in radiotap.h + */ +}; + +static const struct ieee80211_radiotap_namespace radiotap_ns = { + .n_bits = sizeof(rtap_namespace_sizes) / sizeof(rtap_namespace_sizes[0]), + .align_size = rtap_namespace_sizes, +}; + +/** + * ieee80211_radiotap_iterator_init - radiotap parser iterator initialization + * @iterator: radiotap_iterator to initialize + * @radiotap_header: radiotap header to parse + * @max_length: total length we can parse into (eg, whole packet length) + * + * Returns: 0 or a negative error code if there is a problem. + * + * This function initializes an opaque iterator struct which can then + * be passed to ieee80211_radiotap_iterator_next() to visit every radiotap + * argument which is present in the header. It knows about extended + * present headers and handles them. + * + * How to use: + * call __ieee80211_radiotap_iterator_init() to init a semi-opaque iterator + * struct ieee80211_radiotap_iterator (no need to init the struct beforehand) + * checking for a good 0 return code. Then loop calling + * __ieee80211_radiotap_iterator_next()... it returns either 0, + * -ENOENT if there are no more args to parse, or -EINVAL if there is a problem. + * The iterator's @this_arg member points to the start of the argument + * associated with the current argument index that is present, which can be + * found in the iterator's @this_arg_index member. This arg index corresponds + * to the IEEE80211_RADIOTAP_... defines. + * + * Radiotap header length: + * You can find the CPU-endian total radiotap header length in + * iterator->max_length after executing ieee80211_radiotap_iterator_init() + * successfully. + * + * Alignment Gotcha: + * You must take care when dereferencing iterator.this_arg + * for multibyte types... the pointer is not aligned. Use + * get_unaligned((type *)iterator.this_arg) to dereference + * iterator.this_arg for type "type" safely on all arches. + * + * Example code: parse.c + */ + +int ieee80211_radiotap_iterator_init( + struct ieee80211_radiotap_iterator *iterator, + struct ieee80211_radiotap_header *radiotap_header, + int max_length, const struct ieee80211_radiotap_vendor_namespaces *vns) +{ + /* must at least have the radiotap header */ + if (max_length < (int)sizeof(struct ieee80211_radiotap_header)) + return -EINVAL; + + /* Linux only supports version 0 radiotap format */ + if (radiotap_header->it_version) + return -EINVAL; + + /* sanity check for allowed length and radiotap length field */ + if (max_length < get_unaligned_le16(&radiotap_header->it_len)) + return -EINVAL; + + iterator->_rtheader = radiotap_header; + iterator->_max_length = get_unaligned_le16(&radiotap_header->it_len); + iterator->_arg_index = 0; + iterator->_bitmap_shifter = get_unaligned_le32(&radiotap_header->it_present); + iterator->_arg = (uint8_t *)radiotap_header + sizeof(*radiotap_header); + iterator->_reset_on_ext = 0; + iterator->_next_bitmap = &radiotap_header->it_present; + iterator->_next_bitmap++; + iterator->_vns = vns; + iterator->current_namespace = &radiotap_ns; + iterator->is_radiotap_ns = 1; +#ifdef RADIOTAP_SUPPORT_OVERRIDES + iterator->n_overrides = 0; + iterator->overrides = NULL; +#endif + + /* find payload start allowing for extended bitmap(s) */ + + if (iterator->_bitmap_shifter & (1<_arg - + (unsigned long)iterator->_rtheader + sizeof(uint32_t) > + (unsigned long)iterator->_max_length) + return -EINVAL; + while (get_unaligned_le32(iterator->_arg) & + (1 << IEEE80211_RADIOTAP_EXT)) { + iterator->_arg += sizeof(uint32_t); + + /* + * check for insanity where the present bitmaps + * keep claiming to extend up to or even beyond the + * stated radiotap header length + */ + + if ((unsigned long)iterator->_arg - + (unsigned long)iterator->_rtheader + + sizeof(uint32_t) > + (unsigned long)iterator->_max_length) + return -EINVAL; + } + + iterator->_arg += sizeof(uint32_t); + + /* + * no need to check again for blowing past stated radiotap + * header length, because ieee80211_radiotap_iterator_next + * checks it before it is dereferenced + */ + } + + iterator->this_arg = iterator->_arg; + + /* we are all initialized happily */ + + return 0; +} + +static void find_ns(struct ieee80211_radiotap_iterator *iterator, + uint32_t oui, uint8_t subns) +{ + int i; + + iterator->current_namespace = NULL; + + if (!iterator->_vns) + return; + + for (i = 0; i < iterator->_vns->n_ns; i++) { + if (iterator->_vns->ns[i].oui != oui) + continue; + if (iterator->_vns->ns[i].subns != subns) + continue; + + iterator->current_namespace = &iterator->_vns->ns[i]; + break; + } +} + +#ifdef RADIOTAP_SUPPORT_OVERRIDES +static int find_override(struct ieee80211_radiotap_iterator *iterator, + int *align, int *size) +{ + int i; + + if (!iterator->overrides) + return 0; + + for (i = 0; i < iterator->n_overrides; i++) { + if (iterator->_arg_index == iterator->overrides[i].field) { + *align = iterator->overrides[i].align; + *size = iterator->overrides[i].size; + if (!*align) /* erroneous override */ + return 0; + return 1; + } + } + + return 0; +} +#endif + + +/** + * ieee80211_radiotap_iterator_next - return next radiotap parser iterator arg + * @iterator: radiotap_iterator to move to next arg (if any) + * + * Returns: 0 if there is an argument to handle, + * -ENOENT if there are no more args or -EINVAL + * if there is something else wrong. + * + * This function provides the next radiotap arg index (IEEE80211_RADIOTAP_*) + * in @this_arg_index and sets @this_arg to point to the + * payload for the field. It takes care of alignment handling and extended + * present fields. @this_arg can be changed by the caller (eg, + * incremented to move inside a compound argument like + * IEEE80211_RADIOTAP_CHANNEL). The args pointed to are in + * little-endian format whatever the endianess of your CPU. + * + * Alignment Gotcha: + * You must take care when dereferencing iterator.this_arg + * for multibyte types... the pointer is not aligned. Use + * get_unaligned((type *)iterator.this_arg) to dereference + * iterator.this_arg for type "type" safely on all arches. + */ + +int ieee80211_radiotap_iterator_next( + struct ieee80211_radiotap_iterator *iterator) +{ + while (1) { + int hit = 0; + int pad, align, size, subns; + uint32_t oui; + + /* if no more EXT bits, that's it */ + if ((iterator->_arg_index % 32) == IEEE80211_RADIOTAP_EXT && + !(iterator->_bitmap_shifter & 1)) + return -ENOENT; + + if (!(iterator->_bitmap_shifter & 1)) + goto next_entry; /* arg not present */ + + /* get alignment/size of data */ + switch (iterator->_arg_index % 32) { + case IEEE80211_RADIOTAP_RADIOTAP_NAMESPACE: + case IEEE80211_RADIOTAP_EXT: + align = 1; + size = 0; + break; + case IEEE80211_RADIOTAP_VENDOR_NAMESPACE: + align = 2; + size = 6; + break; + default: +#ifdef RADIOTAP_SUPPORT_OVERRIDES + if (find_override(iterator, &align, &size)) { + /* all set */ + } else +#endif + if (!iterator->current_namespace || + iterator->_arg_index >= iterator->current_namespace->n_bits) { + if (iterator->current_namespace == &radiotap_ns) + return -ENOENT; + align = 0; + } else { + align = iterator->current_namespace->align_size[iterator->_arg_index].align; + size = iterator->current_namespace->align_size[iterator->_arg_index].size; + } + if (!align) { + /* skip all subsequent data */ + iterator->_arg = iterator->_next_ns_data; + /* give up on this namespace */ + iterator->current_namespace = NULL; + goto next_entry; + } + break; + } + + /* + * arg is present, account for alignment padding + * + * Note that these alignments are relative to the start + * of the radiotap header. There is no guarantee + * that the radiotap header itself is aligned on any + * kind of boundary. + * + * The above is why get_unaligned() is used to dereference + * multibyte elements from the radiotap area. + */ + + pad = ((unsigned long)iterator->_arg - + (unsigned long)iterator->_rtheader) & (align - 1); + + if (pad) + iterator->_arg += align - pad; + + if (iterator->_arg_index % 32 == IEEE80211_RADIOTAP_VENDOR_NAMESPACE) { + int vnslen; + + if ((unsigned long)iterator->_arg + size - + (unsigned long)iterator->_rtheader > + (unsigned long)iterator->_max_length) + return -EINVAL; + + oui = (*iterator->_arg << 16) | + (*(iterator->_arg + 1) << 8) | + *(iterator->_arg + 2); + subns = *(iterator->_arg + 3); + + find_ns(iterator, oui, subns); + + vnslen = get_unaligned_le16(iterator->_arg + 4); + iterator->_next_ns_data = iterator->_arg + size + vnslen; + if (!iterator->current_namespace) + size += vnslen; + } + + /* + * 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; + iterator->this_arg_size = size; + + /* internally move on the size of this arg */ + iterator->_arg += size; + + /* + * 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 ((unsigned long)iterator->_arg - + (unsigned long)iterator->_rtheader > + (unsigned long)iterator->_max_length) + return -EINVAL; + + /* these special ones are valid in each bitmap word */ + switch (iterator->_arg_index % 32) { + case IEEE80211_RADIOTAP_VENDOR_NAMESPACE: + iterator->_reset_on_ext = 1; + + iterator->is_radiotap_ns = 0; + /* + * If parser didn't register this vendor + * namespace with us, allow it to show it + * as 'raw. Do do that, set argument index + * to vendor namespace. + */ + iterator->this_arg_index = + IEEE80211_RADIOTAP_VENDOR_NAMESPACE; + if (!iterator->current_namespace) + hit = 1; + goto next_entry; + case IEEE80211_RADIOTAP_RADIOTAP_NAMESPACE: + iterator->_reset_on_ext = 1; + iterator->current_namespace = &radiotap_ns; + iterator->is_radiotap_ns = 1; + goto next_entry; + case IEEE80211_RADIOTAP_EXT: + /* + * bit 31 was set, there is more + * -- move to next u32 bitmap + */ + iterator->_bitmap_shifter = + get_unaligned_le32(iterator->_next_bitmap); + iterator->_next_bitmap++; + if (iterator->_reset_on_ext) + iterator->_arg_index = 0; + else + iterator->_arg_index++; + iterator->_reset_on_ext = 0; + break; + default: + /* we've got a hit! */ + hit = 1; + next_entry: + iterator->_bitmap_shifter >>= 1; + iterator->_arg_index++; + } + + /* if we found a valid arg earlier, return it now */ + if (hit) + return 0; + } +} diff --git a/client-wifi/disect5/radiotap.h b/client-wifi/disect5/radiotap.h new file mode 100644 index 0000000..fb5ea68 --- /dev/null +++ b/client-wifi/disect5/radiotap.h @@ -0,0 +1,290 @@ +/*- + * Copyright (c) 2003, 2004 David Young. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of David Young may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY DAVID YOUNG ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A + * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL DAVID + * YOUNG BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + */ + +/* + * Modifications to fit into the linux IEEE 802.11 stack, + * Mike Kershaw (dragorn@kismetwireless.net) + */ + +#ifndef IEEE80211RADIOTAP_H +#define IEEE80211RADIOTAP_H + +#include + +/* Base version of the radiotap packet header data */ +#define PKTHDR_RADIOTAP_VERSION 0 + +/* A generic radio capture format is desirable. There is one for + * Linux, but it is neither rigidly defined (there were not even + * units given for some fields) nor easily extensible. + * + * I suggest the following extensible radio capture format. It is + * based on a bitmap indicating which fields are present. + * + * I am trying to describe precisely what the application programmer + * should expect in the following, and for that reason I tell the + * units and origin of each measurement (where it applies), or else I + * use sufficiently weaselly language ("is a monotonically nondecreasing + * function of...") that I cannot set false expectations for lawyerly + * readers. + */ + +/* The radio capture header precedes the 802.11 header. + * All data in the header is little endian on all platforms. + */ +struct ieee80211_radiotap_header { + uint8_t it_version; /* Version 0. Only increases + * for drastic changes, + * introduction of compatible + * new fields does not count. + */ + uint8_t it_pad; + uint16_t it_len; /* length of the whole + * header in bytes, including + * it_version, it_pad, + * it_len, and data fields. + */ + uint32_t it_present; /* A bitmap telling which + * fields are present. Set bit 31 + * (0x80000000) to extend the + * bitmap by another 32 bits. + * Additional extensions are made + * by setting bit 31. + */ +}; + +/* Name Data type Units + * ---- --------- ----- + * + * IEEE80211_RADIOTAP_TSFT __le64 microseconds + * + * Value in microseconds of the MAC's 64-bit 802.11 Time + * Synchronization Function timer when the first bit of the + * MPDU arrived at the MAC. For received frames, only. + * + * IEEE80211_RADIOTAP_CHANNEL 2 x uint16_t MHz, bitmap + * + * Tx/Rx frequency in MHz, followed by flags (see below). + * + * IEEE80211_RADIOTAP_FHSS uint16_t see below + * + * For frequency-hopping radios, the hop set (first byte) + * and pattern (second byte). + * + * IEEE80211_RADIOTAP_RATE u8 500kb/s + * + * Tx/Rx data rate + * + * IEEE80211_RADIOTAP_DBM_ANTSIGNAL s8 decibels from + * one milliwatt (dBm) + * + * RF signal power at the antenna, decibel difference from + * one milliwatt. + * + * IEEE80211_RADIOTAP_DBM_ANTNOISE s8 decibels from + * one milliwatt (dBm) + * + * RF noise power at the antenna, decibel difference from one + * milliwatt. + * + * IEEE80211_RADIOTAP_DB_ANTSIGNAL u8 decibel (dB) + * + * RF signal power at the antenna, decibel difference from an + * arbitrary, fixed reference. + * + * IEEE80211_RADIOTAP_DB_ANTNOISE u8 decibel (dB) + * + * RF noise power at the antenna, decibel difference from an + * arbitrary, fixed reference point. + * + * IEEE80211_RADIOTAP_LOCK_QUALITY uint16_t unitless + * + * Quality of Barker code lock. Unitless. Monotonically + * nondecreasing with "better" lock strength. Called "Signal + * Quality" in datasheets. (Is there a standard way to measure + * this?) + * + * IEEE80211_RADIOTAP_TX_ATTENUATION uint16_t unitless + * + * Transmit power expressed as unitless distance from max + * power set at factory calibration. 0 is max power. + * Monotonically nondecreasing with lower power levels. + * + * IEEE80211_RADIOTAP_DB_TX_ATTENUATION uint16_t decibels (dB) + * + * Transmit power expressed as decibel distance from max power + * set at factory calibration. 0 is max power. Monotonically + * nondecreasing with lower power levels. + * + * IEEE80211_RADIOTAP_DBM_TX_POWER s8 decibels from + * one milliwatt (dBm) + * + * Transmit power expressed as dBm (decibels from a 1 milliwatt + * reference). This is the absolute power level measured at + * the antenna port. + * + * IEEE80211_RADIOTAP_FLAGS u8 bitmap + * + * Properties of transmitted and received frames. See flags + * defined below. + * + * IEEE80211_RADIOTAP_ANTENNA u8 antenna index + * + * Unitless indication of the Rx/Tx antenna for this packet. + * The first antenna is antenna 0. + * + * IEEE80211_RADIOTAP_RX_FLAGS uint16_t bitmap + * + * Properties of received frames. See flags defined below. + * + * IEEE80211_RADIOTAP_TX_FLAGS uint16_t bitmap + * + * Properties of transmitted frames. See flags defined below. + * + * IEEE80211_RADIOTAP_RTS_RETRIES u8 data + * + * Number of rts retries a transmitted frame used. + * + * IEEE80211_RADIOTAP_DATA_RETRIES u8 data + * + * Number of unicast retries a transmitted frame used. + * + * IEEE80211_RADIOTAP_MCS u8, u8, u8 unitless + * + * Contains a bitmap of known fields/flags, the flags, and + * the MCS index. + * + * IEEE80211_RADIOTAP_AMPDU_STATUS u32, u16, u8, u8 unitlesss + * + * Contains the AMPDU information for the subframe. + */ +enum ieee80211_radiotap_type { + IEEE80211_RADIOTAP_TSFT = 0, + IEEE80211_RADIOTAP_FLAGS = 1, + IEEE80211_RADIOTAP_RATE = 2, + IEEE80211_RADIOTAP_CHANNEL = 3, + IEEE80211_RADIOTAP_FHSS = 4, + IEEE80211_RADIOTAP_DBM_ANTSIGNAL = 5, + IEEE80211_RADIOTAP_DBM_ANTNOISE = 6, + IEEE80211_RADIOTAP_LOCK_QUALITY = 7, + IEEE80211_RADIOTAP_TX_ATTENUATION = 8, + IEEE80211_RADIOTAP_DB_TX_ATTENUATION = 9, + IEEE80211_RADIOTAP_DBM_TX_POWER = 10, + IEEE80211_RADIOTAP_ANTENNA = 11, + IEEE80211_RADIOTAP_DB_ANTSIGNAL = 12, + IEEE80211_RADIOTAP_DB_ANTNOISE = 13, + IEEE80211_RADIOTAP_RX_FLAGS = 14, + IEEE80211_RADIOTAP_TX_FLAGS = 15, + IEEE80211_RADIOTAP_RTS_RETRIES = 16, + IEEE80211_RADIOTAP_DATA_RETRIES = 17, + + IEEE80211_RADIOTAP_MCS = 19, + IEEE80211_RADIOTAP_AMPDU_STATUS = 20, + + /* valid in every it_present bitmap, even vendor namespaces */ + IEEE80211_RADIOTAP_RADIOTAP_NAMESPACE = 29, + IEEE80211_RADIOTAP_VENDOR_NAMESPACE = 30, + IEEE80211_RADIOTAP_EXT = 31 +}; + +/* Channel flags. */ +#define IEEE80211_CHAN_TURBO 0x0010 /* Turbo channel */ +#define IEEE80211_CHAN_CCK 0x0020 /* CCK channel */ +#define IEEE80211_CHAN_OFDM 0x0040 /* OFDM channel */ +#define IEEE80211_CHAN_2GHZ 0x0080 /* 2 GHz spectrum channel. */ +#define IEEE80211_CHAN_5GHZ 0x0100 /* 5 GHz spectrum channel */ +#define IEEE80211_CHAN_PASSIVE 0x0200 /* Only passive scan allowed */ +#define IEEE80211_CHAN_DYN 0x0400 /* Dynamic CCK-OFDM channel */ +#define IEEE80211_CHAN_GFSK 0x0800 /* GFSK channel (FHSS PHY) */ + +/* For IEEE80211_RADIOTAP_FLAGS */ +#define IEEE80211_RADIOTAP_F_CFP 0x01 /* sent/received + * during CFP + */ +#define IEEE80211_RADIOTAP_F_SHORTPRE 0x02 /* sent/received + * with short + * preamble + */ +#define IEEE80211_RADIOTAP_F_WEP 0x04 /* sent/received + * with WEP encryption + */ +#define IEEE80211_RADIOTAP_F_FRAG 0x08 /* sent/received + * with fragmentation + */ +#define IEEE80211_RADIOTAP_F_FCS 0x10 /* frame includes FCS */ +#define IEEE80211_RADIOTAP_F_DATAPAD 0x20 /* frame has padding between + * 802.11 header and payload + * (to 32-bit boundary) + */ +#define IEEE80211_RADIOTAP_F_BADFCS 0x40 /* frame failed FCS check */ + +/* For IEEE80211_RADIOTAP_RX_FLAGS */ +#define IEEE80211_RADIOTAP_F_RX_BADPLCP 0x0002 /* bad PLCP */ + +/* For IEEE80211_RADIOTAP_TX_FLAGS */ +#define IEEE80211_RADIOTAP_F_TX_FAIL 0x0001 /* failed due to excessive + * retries */ +#define IEEE80211_RADIOTAP_F_TX_CTS 0x0002 /* used cts 'protection' */ +#define IEEE80211_RADIOTAP_F_TX_RTS 0x0004 /* used rts/cts handshake */ + +/* For IEEE80211_RADIOTAP_AMPDU_STATUS */ +#define IEEE80211_RADIOTAP_AMPDU_REPORT_ZEROLEN 0x0001 +#define IEEE80211_RADIOTAP_AMPDU_IS_ZEROLEN 0x0002 +#define IEEE80211_RADIOTAP_AMPDU_LAST_KNOWN 0x0004 +#define IEEE80211_RADIOTAP_AMPDU_IS_LAST 0x0008 +#define IEEE80211_RADIOTAP_AMPDU_DELIM_CRC_ERR 0x0010 +#define IEEE80211_RADIOTAP_AMPDU_DELIM_CRC_KNOWN 0x0020 + +/* For IEEE80211_RADIOTAP_MCS */ +#define IEEE80211_RADIOTAP_MCS_HAVE_BW 0x01 +#define IEEE80211_RADIOTAP_MCS_HAVE_MCS 0x02 +#define IEEE80211_RADIOTAP_MCS_HAVE_GI 0x04 +#define IEEE80211_RADIOTAP_MCS_HAVE_FMT 0x08 +#define IEEE80211_RADIOTAP_MCS_HAVE_FEC 0x10 +#define IEEE80211_RADIOTAP_MCS_HAVE_STBC 0x20 +#define IEEE80211_RADIOTAP_MCS_HAVE_NESS 0x40 +#define IEEE80211_RADIOTAP_MCS_NESS_BIT1 0x80 + + +#define IEEE80211_RADIOTAP_MCS_BW_MASK 0x03 +#define IEEE80211_RADIOTAP_MCS_BW_20 0 +#define IEEE80211_RADIOTAP_MCS_BW_40 1 +#define IEEE80211_RADIOTAP_MCS_BW_20L 2 +#define IEEE80211_RADIOTAP_MCS_BW_20U 3 +#define IEEE80211_RADIOTAP_MCS_SGI 0x04 +#define IEEE80211_RADIOTAP_MCS_FMT_GF 0x08 +#define IEEE80211_RADIOTAP_MCS_FEC_LDPC 0x10 +#define IEEE80211_RADIOTAP_MCS_STBC_MASK 0x60 +#define IEEE80211_RADIOTAP_MCS_STBC_SHIFT 5 +#define IEEE80211_RADIOTAP_MCS_STBC_1 1 +#define IEEE80211_RADIOTAP_MCS_STBC_2 2 +#define IEEE80211_RADIOTAP_MCS_STBC_3 3 +#define IEEE80211_RADIOTAP_MCS_NESS_BIT0 0x80 + +#endif /* IEEE80211_RADIOTAP_H */ diff --git a/client-wifi/disect5/radiotap_iter.h b/client-wifi/disect5/radiotap_iter.h new file mode 100644 index 0000000..5ee4cfb --- /dev/null +++ b/client-wifi/disect5/radiotap_iter.h @@ -0,0 +1,96 @@ +#ifndef __RADIOTAP_ITER_H +#define __RADIOTAP_ITER_H + +#include +#include "radiotap.h" + +/* Radiotap header iteration + * implemented in radiotap.c + */ + +struct radiotap_override { + uint8_t field; + uint8_t align:4, size:4; +}; + +struct radiotap_align_size { + uint8_t align:4, size:4; +}; + +struct ieee80211_radiotap_namespace { + const struct radiotap_align_size *align_size; + int n_bits; + uint32_t oui; + uint8_t subns; +}; + +struct ieee80211_radiotap_vendor_namespaces { + const struct ieee80211_radiotap_namespace *ns; + int n_ns; +}; + +/** + * struct ieee80211_radiotap_iterator - tracks walk thru present radiotap args + * @this_arg_index: index of current arg, valid after each successful call + * to ieee80211_radiotap_iterator_next() + * @this_arg: pointer to current radiotap arg; it is valid after each + * call to ieee80211_radiotap_iterator_next() but also after + * ieee80211_radiotap_iterator_init() where it will point to + * the beginning of the actual data portion + * @this_arg_size: length of the current arg, for convenience + * @current_namespace: pointer to the current namespace definition + * (or internally %NULL if the current namespace is unknown) + * @is_radiotap_ns: indicates whether the current namespace is the default + * radiotap namespace or not + * + * @overrides: override standard radiotap fields + * @n_overrides: number of overrides + * + * @_rtheader: pointer to the radiotap header we are walking through + * @_max_length: length of radiotap header in cpu byte ordering + * @_arg_index: next argument index + * @_arg: next argument pointer + * @_next_bitmap: internal pointer to next present u32 + * @_bitmap_shifter: internal shifter for curr u32 bitmap, b0 set == arg present + * @_vns: vendor namespace definitions + * @_next_ns_data: beginning of the next namespace's data + * @_reset_on_ext: internal; reset the arg index to 0 when going to the + * next bitmap word + * + * Describes the radiotap parser state. Fields prefixed with an underscore + * must not be used by users of the parser, only by the parser internally. + */ + +struct ieee80211_radiotap_iterator { + struct ieee80211_radiotap_header *_rtheader; + const struct ieee80211_radiotap_vendor_namespaces *_vns; + const struct ieee80211_radiotap_namespace *current_namespace; + + unsigned char *_arg, *_next_ns_data; + uint32_t *_next_bitmap; + + unsigned char *this_arg; +#ifdef RADIOTAP_SUPPORT_OVERRIDES + const struct radiotap_override *overrides; + int n_overrides; +#endif + int this_arg_index; + int this_arg_size; + + int is_radiotap_ns; + + int _max_length; + int _arg_index; + uint32_t _bitmap_shifter; + int _reset_on_ext; +}; + +extern int ieee80211_radiotap_iterator_init( + struct ieee80211_radiotap_iterator *iterator, + struct ieee80211_radiotap_header *radiotap_header, + int max_length, const struct ieee80211_radiotap_vendor_namespaces *vns); + +extern int ieee80211_radiotap_iterator_next( + struct ieee80211_radiotap_iterator *iterator); + +#endif /* __RADIOTAP_ITER_H */ diff --git a/client-wifi/disect5/soho-sigint-wifi.c b/client-wifi/disect5/soho-sigint-wifi.c new file mode 100644 index 0000000..e75b098 --- /dev/null +++ b/client-wifi/disect5/soho-sigint-wifi.c @@ -0,0 +1,245 @@ +/********************************************************************** +This is a wireless pcap capture and parser by example. +By: Russell Handorf +**********************************************************************/ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "radiotap.h" +#include "radiotap_iter.h" + +const struct pcap_pkthdr* callback_header; + +static const struct radiotap_align_size align_size_000000_00[] = { + [0] = { .align = 1, .size = 4, }, + [52] = { .align = 1, .size = 4, }, +}; + +typedef struct { + u_int8_t it_version; + u_int8_t it_pad; + u_int16_t it_len; + u_int32_t it_present; + + u_int32_t pad; + u_int8_t flags; + u_int8_t rate; + u_int16_t wr_chan_freq; + int8_t ant_sig; + int8_t lock_quality; + u_int8_t ant; + +} __attribute__((__packed__)) ieee80211_radiotap; + +typedef struct { + unsigned short fc; + unsigned short durid; + u_char a1[6]; + u_char a2[6]; + u_char a3[6]; + unsigned short seq; + u_char a4[6]; +} __attribute__((__packed__)) dot11_header; + + +void format_mac(u_char * mac, char * f) { + sprintf(f, "%02x:%02x:%02x:%02x:%02x:%02x", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]); +} + +void my_callback(u_char *args,const struct pcap_pkthdr* pkthdr,const u_char* packet) { + + //printf("packet size: %d\n", pkthdr->len); + //printf("packet: %02x \n", packet); + //printf("%u\n", packet); + int err, radiotap_header_len, ssid_len, i; + int8_t rssi, rate; + u_int16_t channel; + char client_mac[18]; + char ssid[38]; + + struct ieee80211_radiotap_iterator iter; + + radiotap_header_len = iter._max_length; + dot11_header * dot_head = (dot11_header*) (packet + radiotap_header_len * sizeof(char) ); + + err = ieee80211_radiotap_iterator_init(&iter, (void*)packet, pkthdr->caplen, NULL); + if (err > 0) { + } + + radiotap_header_len = iter._max_length; + + while (!(err = ieee80211_radiotap_iterator_next(&iter))) { + if (iter.this_arg_index == IEEE80211_RADIOTAP_DBM_ANTSIGNAL) { + rssi = (int8_t)iter.this_arg[0]; + } + if (iter.this_arg_index == IEEE80211_RADIOTAP_CHANNEL) { + channel = (*(uint16_t *)iter.this_arg); + } + if (iter.this_arg_index == IEEE80211_RADIOTAP_RATE) { + rate = (u_int8_t)iter.this_arg[0]; + } + /* if (iter.this_arg_index == IEEE80211_RADIOTAP_DBM_ANTNOISE) { */ + /* noise = (int8_t)iter.this_arg[0]; */ + /* } */ + }; + + if (pkthdr->len >= 24) { + u_int8_t hlen; + hlen = packet[2]+(packet[3]<<8); //Usually 18 or 13 in some cases + switch (packet[hlen]) { + case 0x40: + //memset(ssid, 0, sizeof(ssid)); + printf("Probe request\n"); + printf("probe request client mac: %02x:%02x:%02x:%02x:%02x:%02x\n", packet[44], packet[45],packet[46],packet[47],packet[48],packet[49]); + ssid_len=packet[59]; + printf("probe size: %d\n", ssid_len); + if (ssid_len>0) { + for (i=0;ia2, client_mac); + + printf("rate: %d channel: %04x rssi: %d\n", rate, channel, rssi); +} + +int main(int argc,char **argv) +{ + int c; + char *dev = NULL; + char errbuf[PCAP_ERRBUF_SIZE]; + pcap_t* pcap; + struct bpf_program fp; /* hold compiled program */ + bpf_u_int32 maskp; /* subnet mask */ + bpf_u_int32 netp; /* ip */ + u_char* args = NULL; + char filter_exp[] = ""; + char *totpacket = NULL; + + while ((c = getopt (argc, argv, "ha:i:")) != -1) + switch (c) { + case 'a': + totpacket = optarg; + break; + case 'i': + dev = optarg; + break; + case 'h': + printf("./disect -a -i\n\t-a : number of packets to sniff. (default 10)\n\t-i : wlan interface.\n"); + exit(0); + default: + return 0; + } + + if (totpacket == NULL) { + totpacket="-1"; + printf("-a not specified... setting to 10.\n"); + } + + if (dev == NULL) { + printf("You forgot -i\n"); + exit(0); + } + + printf ("%s %s\n", totpacket, dev); + + if(dev == NULL) { + printf("%s\n",errbuf); + exit(1); + } + + /* ask pcap for the network address and mask of the device */ + pcap_lookupnet(dev,&netp,&maskp,errbuf); + + /* open device for reading. NOTE: defaulting to + * promiscuous mode*/ + pcap = pcap_open_live(dev,BUFSIZ,1,-1,errbuf); + pcap_set_promisc(pcap, 1); + + if(pcap == NULL) { + printf("pcap_open_live(): %s\n",errbuf); + exit(1); + } + + pcap_set_datalink(pcap, DLT_IEEE802_11); + pcap_set_datalink(pcap, DLT_IEEE802_11_RADIO_AVS); + pcap_set_datalink(pcap, DLT_IEEE802_11_RADIO); + + pcap_setnonblock(pcap, 1, errbuf); + + int link_layer_type = pcap_datalink(pcap); + + //printf("type: %d\n", link_layer_type); + + if (link_layer_type == DLT_PRISM_HEADER || + link_layer_type == DLT_IEEE802_11_RADIO || + link_layer_type == DLT_IEEE802_11_RADIO_AVS || + link_layer_type == DLT_IEEE802_11 || + link_layer_type == DLT_PPI || + link_layer_type == 127 ) { + if (pcap_compile(pcap, &fp, filter_exp, 0, netp) == -1) { + fprintf(stderr, "Couldn't parse filter %s: %s\n", filter_exp, pcap_geterr(pcap)); + exit(EXIT_FAILURE); + } + if (pcap_setfilter(pcap, &fp) == -1) { + fprintf(stderr, "Couldn't install filter %s: %s\n", + filter_exp, pcap_geterr(pcap)); + exit(EXIT_FAILURE); + } + printf("starting\n"); + + pcap_loop(pcap,atoi(totpacket),my_callback,NULL); + } else { + fprintf(stderr, "Not using the Wi-Fi interface, are you testing something?\n"); + } + fprintf(stdout,"\nfinished\n"); + return 0; +} +