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2015-06-20netsniff-ng: Add dissector for Linux "cooked" packetsVadim Kochan1-1/+1
Added dissector_sll.c which uses sockaddr_ll to lookup & print higher L3 layer protocol. This dissector is mapped by LINKTYPE_LINUX_SLL link type. Sample output of dissected Netlink & Ethernet packets. Truncated manually some longer lines by "...": > nlmon0 20 1434193547s.717131169ns #6 [ Linux "cooked" Pkt Type 4 (outgoing), If Type 824 (netlink), Addr Len 0, Src (), Proto 0x0 ] [ NLMSG Family 0 (routing), Len 20, Type 0x0003 (DONE)... > wlp3s0 52 1434194181s.436224709ns #9 [ Linux "cooked" Pkt Type 4 (outgoing), If Type 1 (ether), Addr Len 6, Src (XX:XX:XX:XX:XX:XX), Proto 0x800 ] [ IPv4 Addr (XXX.XXX.XXX.XXX => 212.42.76.253), Proto (6), TTL (64), TOS (0), ... ), CSum (0x1ef5) is ok ] [ Geo (local => Ukraine) ] [ TCP Port (45849 => 443 (https)), SN (0x1744209), AN (0x46ca9611), DataOff (8) ... [ Chr .....w.Rj).. ] [ Hex XX XX XX XX XX XX XX XX XX XX XX XX ] Signed-off-by: Vadim Kochan <vadim4j@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2015-06-13dev: Add device string convertions (addr, dev type)Vadim Kochan1-0/+182
Move device string convertions funcs (device_type2str, device_addr2str) from proto_nlmsg.c to dev.c to use them in other modules. Signed-off-by: Vadim Kochan <vadim4j@gmail.com> [ dbkm: minor stylistic fixes ] Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2015-04-21dev: Close socket in error path of device_ifindex_get()Tobias Klauser1-2/+3
If the ioctl() fails, the socket still needs to be closed instead of returning directly. This issue was discovered using the Coverity scanner. Fixes: f43bbe9 ("mac80211: Check existence of generated monX device") Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-04-21netsniff-ng: fix snooping on any device when no option is givenDaniel Borkmann1-1/+2
Commit f43bbe9e895a ("mac80211: Check existence of generated monX device") broke starting netsniff-ng w/o any arguments, that is, sniffing on "any" device. The test in device_ifindex() should be index < 0. Fixes: f43bbe9e895a ("mac80211: Check existence of generated monX device") Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2015-04-20mac80211: Check existence of generated monX deviceVadim Kochan1-3/+12
Fix then case when netsniff-ng fails if there is already an existing monX device while generating one. Signed-off-by: Vadim Kochan <vadim4j@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2013-08-09dev: Integrate `promisc' module into `dev' moduleTobias Klauser1-0/+21
Since entering/leaving promiscuous mode also is a device specific function and all users of the `promisc' module also use `dev', integrate it there. Also rename the functions to have a `device_' prefix like the other functions in the module. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2013-08-08dev: Make device_mtu() return size_tTobias Klauser1-2/+3
We don't return negative values and the MTU is supposed to be the (maximum) length of a packet, thus make it of type size_t. Most of the users in the code store it in size_t already anyway. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2013-07-31dev: Constify `ifname' parameter to device_up_and_running()Tobias Klauser1-1/+1
The parameter `ifname' to device_up_and_running() is never modified inside the function, thus mark it as const. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2013-07-03dev: linktype: use ARPHRD_ETHER for "any" deviceDaniel Borkmann1-1/+3
Use ARPHRD_ETHER for the "any" device, so that when typing "netsniff-ng" without any arguments, ethernet is assumed. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-07-03pcap: support for various linktypesDaniel Borkmann1-0/+24
Add a device_type() method to get the assigned dev->type from the kernel, and add support for automatic selection of the correct pcap file header's linktype. This needs to be integrated into the core code though. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-06-20dev: mark paths likely/unlikelyDaniel Borkmann1-4/+4
Mark them as what is to be most expected. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-06-17dev: make paths unlikely, simplify codeDaniel Borkmann1-17/+11
Simplify code a bit and mark error paths unlikely. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-06-17dev: bail out if ifindex could not be retrievedDaniel Borkmann1-4/+4
If we fail to find the ifindex of a given device, bail out. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-06-04xutils: eliminate xutils, move rest to epoll2Daniel Borkmann1-1/+0
Finally eliminate xutils.{c,h} and move the rest to epoll2. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-06-04link: add link management functionsDaniel Borkmann1-0/+1
Same here as usual, break out link functions from xutils. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-06-04sock: add socket management functionsDaniel Borkmann1-0/+1
Remove them from xutils, and add them to socket management. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-06-04xutils: move device management functions out of xutilsDaniel Borkmann1-0/+169
Move those functions out so that they can be more easily maintained in its separate file. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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