6f9cba8f8b
Local changes: - In contrib/libpcap/pcap/bpf.h, do not include pcap/dlt.h. Our system net/dlt.h is pulled in from net/bpf.h. - sys/net/dlt.h: Incorporate changes from libpcap 1.10.3. - lib/libpcap/Makefile: Update for libpcap 1.10.3. Changelog: https://git.tcpdump.org/libpcap/blob/95691ebe7564afa3faa5c6ba0dbd17e351be455a:/CHANGES Reviewed by: emaste Obtained from: https://www.tcpdump.org/release/libpcap-1.10.3.tar.gz Sponsored by: The FreeBSD Foundation
278 lines
13 KiB
Markdown
278 lines
13 KiB
Markdown
# libpcap installation notes
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Libpcap can be built either with the configure script and `make`, or
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with CMake and any build system supported by CMake.
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To build libpcap with the configure script and `make`:
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* Run `./configure` (a shell script). The configure script will
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determine your system attributes and generate an appropriate `Makefile`
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from `Makefile.in`. The configure script has a number of options to
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control the configuration of libpcap; `./configure --help`` will show
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them.
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* Next, run `make`. If everything goes well, you can
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`su` to root and run `make install`. However, you need not install
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libpcap if you just want to build tcpdump; just make sure the tcpdump
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and libpcap directory trees have the same parent directory.
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To build libpcap with CMake and the build system of your choice, from
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the command line:
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* Create a build directory into which CMake will put the build files it
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generates; CMake does not work as well with builds done in the source
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code directory as does the configure script. The build directory may be
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created as a subdirectory of the source directory or as a directory
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outside the source directory.
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* Change to the build directory and run CMake with the path from the
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build directory to the source directory as an argument. The `-G` flag
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can be used to select the CMake "generator" appropriate for the build
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system you're using; various `-D` flags can be used to control the
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configuration of libpcap.
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* Run the build tool. If everything goes well, you can `su` to root and
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run the build tool with the `install` target. Building tcpdump from a
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libpcap in a build directory is not supported.
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An `uninstall` target is supported with both `./configure` and CMake.
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***DO NOT*** run the build as root; there is no need to do so, running
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anything as root that doesn't need to be run as root increases the risk
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of damaging your system, and running the build as root will put files in
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the build directory that are owned by root and that probably cannot be
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overwritten, removed, or replaced except by root, which could cause
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permission errors in subsequent builds.
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If configure says:
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configure: warning: cannot determine packet capture interface
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configure: warning: (see INSTALL.md file for more info)
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or CMake says:
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cannot determine packet capture interface
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(see the INSTALL.md file for more info)
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then your system either does not support packet capture or your system
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does support packet capture but libpcap does not support that
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particular type. (If you have HP-UX, see below.) If your system uses a
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packet capture not supported by libpcap, please send us patches; don't
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forget to include an autoconf fragment suitable for use in
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`configure.ac`.
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It is possible to override the default packet capture type with the
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`--with-pcap`` option to `./configure` or the `-DPCAP_TYPE` option to
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CMake, although the circumstances where this works are limited. One
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possible reason to do that would be to force a supported packet capture
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type in the case where the configure or CMake scripts fails to detect
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it.
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You will need a C99 compiler to build libpcap. The configure script
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will abort if your compiler is not C99 compliant. If this happens, use
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the generally available GNU C compiler (GCC) or Clang.
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You will need either Flex 2.5.31 or later, or a version of Lex
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compatible with it (if any exist), to build libpcap. The configure
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script will abort if there isn't any such program; CMake fails if Flex
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or Lex cannot be found, but doesn't ensure that it's compatible with
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Flex 2.5.31 or later. If you have an older version of Flex, or don't
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have a compatible version of Lex, the current version of Flex is
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available [here](https://github.com/westes/flex).
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You will need either Bison, Berkeley YACC, or a version of YACC
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compatible with them (if any exist), to build libpcap. The configure
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script will abort if there isn't any such program; CMake fails if Bison
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or some form of YACC cannot be found, but doesn't ensure that it's
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compatible with Bison or Berkeley YACC. If you don't have any such
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program, the current version of Bison can be found
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[here](https://ftp.gnu.org/gnu/bison/) and the current version of
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Berkeley YACC can be found [here](https://invisible-island.net/byacc/).
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Sometimes the stock C compiler does not interact well with Flex and
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Bison. The list of problems includes undefined references for alloca(3).
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You can get around this by installing GCC.
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## Linux specifics
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On Linux, libpcap will not work if the kernel does not have the packet
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socket option enabled; see [this file](doc/README.linux) for more
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information.
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## Solaris specifics
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If you use the SPARCompiler, you must be careful to not use the
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`/usr/ucb/cc` interface. If you do, you will get bogus warnings and
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perhaps errors. Either make sure your path has `/opt/SUNWspro/bin`
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before `/usr/ucb` or else:
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setenv CC /opt/SUNWspro/bin/cc
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before running configure. (You might have to do a `make distclean`
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if you already ran `configure` once).
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See [this file](doc/README.solaris.md) for more up to date
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Solaris-related information.
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## HP-UX specifics
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If you use HP-UX, you must have at least version 9 and either the
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version of `cc` that supports C99 (`cc -AC99`) or else use the GNU C
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compiler. You must also buy the optional streams package. If you don't
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have:
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/usr/include/sys/dlpi.h
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/usr/include/sys/dlpi_ext.h
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then you don't have the streams package. In addition, we believe you
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need to install the "9.X LAN and DLPI drivers cumulative" patch
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(PHNE_6855) to make the version 9 DLPI work with libpcap.
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The DLPI streams package is standard starting with HP-UX 10.
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The HP implementation of DLPI is a little bit eccentric. Unlike
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Solaris, you must attach `/dev/dlpi` instead of the specific `/dev/*`
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network pseudo device entry in order to capture packets. The PPA is
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based on the ifnet "index" number. Under HP-UX 9, it is necessary to
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read `/dev/kmem` and the kernel symbol file (`/hp-ux`). Under HP-UX 10,
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DLPI can provide information for determining the PPA. It does not seem
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to be possible to trace the loopback interface. Unlike other DLPI
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implementations, PHYS implies MULTI and SAP and you get an error if you
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try to enable more than one promiscuous mode at a time.
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It is impossible to capture outbound packets on HP-UX 9. To do so on
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HP-UX 10, you will, apparently, need a late "LAN products cumulative
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patch" (at one point, it was claimed that this would be PHNE_18173 for
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s700/10.20; at another point, it was claimed that the required patches
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were PHNE_20892, PHNE_20725 and PHCO_10947, or newer patches), and to do
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so on HP-UX 11 you will, apparently, need the latest lancommon/DLPI
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patches and the latest driver patch for the interface(s) in use on HP-UX
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11 (at one point, it was claimed that patches PHNE_19766, PHNE_19826,
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PHNE_20008, and PHNE_20735 did the trick).
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Furthermore, on HP-UX 10, you will need to turn on a kernel switch by
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doing
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echo 'lanc_outbound_promisc_flag/W 1' | adb -w /stand/vmunix /dev/mem
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You would have to arrange that this happens on reboots; the right way to
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do that would probably be to put it into an executable script file
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`/sbin/init.d/outbound_promisc` and making
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`/sbin/rc2.d/S350outbound_promisc` a symbolic link to that script.
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Finally, testing shows that there can't be more than one simultaneous
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DLPI user per network interface.
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See [this file](doc/README.hpux) for more information specific to HP-UX.
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## AIX specifics
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See [this file](doc/README.aix) for information on installing libpcap and
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configuring your system to be able to support libpcap.
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## other specifics
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If you are trying to do packet capture with a FORE ATM card, you may or
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may not be able to. They usually only release their driver in object
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code so unless their driver supports packet capture, there's not much
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libpcap can do.
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If you get an error like:
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tcpdump: recv_ack: bind error 0x???
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when using DLPI, look for the DL_ERROR_ACK error return values, usually
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in `/usr/include/sys/dlpi.h`, and find the corresponding value.
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## Description of files
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CHANGES - description of differences between releases
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ChmodBPF/* - macOS startup item to set ownership and permissions on /dev/bpf*
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CMakeLists.txt - CMake file
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CONTRIBUTING.md - guidelines for contributing
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CREDITS - people that have helped libpcap along
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INSTALL.md - this file
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LICENSE - the license under which tcpdump is distributed
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Makefile.in - compilation rules (input to the configure script)
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README.md - description of distribution
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doc/README.aix - notes on using libpcap on AIX
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doc/README.dag - notes on using libpcap to capture on Endace DAG devices
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doc/README.hpux - notes on using libpcap on HP-UX
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doc/README.linux - notes on using libpcap on Linux
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doc/README.macos - notes on using libpcap on macOS
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doc/README.septel - notes on using libpcap to capture on Intel/Septel devices
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doc/README.sita - notes on using libpcap to capture on SITA devices
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doc/README.solaris.md - notes on using libpcap on Solaris
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doc/README.Win32.md - notes on using libpcap on Win32 systems (with Npcap)
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VERSION - version of this release
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aclocal.m4 - autoconf macros
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arcnet.h - ARCNET definitions
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atmuni31.h - ATM Q.2931 definitions
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bpf_dump.c - BPF program printing routines
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bpf_filter.c - BPF filtering routines
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bpf_image.c - BPF disassembly routine
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config.guess - autoconf support
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config.h.in - autoconf input
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config.sub - autoconf support
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configure - configure script (run this first)
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configure.ac - configure script source
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dlpisubs.c - DLPI-related functions for pcap-dlpi.c and pcap-libdlpi.c
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dlpisubs.h - DLPI-related function declarations
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etherent.c - /etc/ethers support routines
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ethertype.h - Ethernet protocol types and names definitions
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fad-getad.c - pcap_findalldevs() for systems with getifaddrs()
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fad-gifc.c - pcap_findalldevs() for systems with only SIOCGIFLIST
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fad-glifc.c - pcap_findalldevs() for systems with SIOCGLIFCONF
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testprogs/filtertest.c - test program for BPF compiler
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testprogs/findalldevstest.c - test program for pcap_findalldevs()
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gencode.c - BPF code generation routines
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gencode.h - BPF code generation definitions
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grammar.y - filter string grammar
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ieee80211.h - 802.11 definitions
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install-sh - BSD style install script
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lbl/os-*.h - OS-dependent defines and prototypes
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llc.h - 802.2 LLC SAP definitions
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missing/* - replacements for missing library functions
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mkdep - construct Makefile dependency list
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msdos/* - drivers for MS-DOS capture support
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nametoaddr.c - hostname to address routines
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nlpid.h - OSI network layer protocol identifier definitions
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optimize.c - BPF optimization routines
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pcap/bluetooth.h - public definition of DLT_BLUETOOTH_HCI_H4_WITH_PHDR header
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pcap/bpf.h - BPF definitions
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pcap/namedb.h - public libpcap name database definitions
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pcap/pcap.h - public libpcap definitions
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pcap/sll.h - public definitions of DLT_LINUX_SLL and DLT_LINUX_SLL2 headers
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pcap/usb.h - public definition of DLT_USB header
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pcap-bpf.c - BSD Packet Filter support
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pcap-bpf.h - header for backwards compatibility
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pcap-bt-linux.c - Bluetooth capture support for Linux
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pcap-bt-linux.h - Bluetooth capture support for Linux
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pcap-dag.c - Endace DAG device capture support
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pcap-dag.h - Endace DAG device capture support
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pcap-dlpi.c - Data Link Provider Interface support
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pcap-dos.c - MS-DOS capture support
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pcap-dos.h - headers for MS-DOS capture support
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pcap-enet.c - enet support
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pcap-int.h - internal libpcap definitions
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pcap-libdlpi.c - Data Link Provider Interface support for systems with libdlpi
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pcap-linux.c - Linux packet socket support
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pcap-namedb.h - header for backwards compatibility
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pcap-nit.c - SunOS Network Interface Tap support
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pcap-npf.c - Npcap capture support
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pcap-null.c - dummy monitor support (allows offline use of libpcap)
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pcap-pf.c - Ultrix and Digital/Tru64 UNIX Packet Filter support
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pcap-septel.c - Intel/Septel device capture support
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pcap-septel.h - Intel/Septel device capture support
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pcap-sita.c - SITA device capture support
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pcap-sita.h - SITA device capture support
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pcap-sita.html - SITA device capture documentation
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pcap-snit.c - SunOS 4.x STREAMS-based Network Interface Tap support
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pcap-snoop.c - IRIX Snoop network monitoring support
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pcap-usb-linux.c - USB capture support for Linux
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pcap-usb-linux.h - USB capture support for Linux
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pcap.3pcap - manual entry for the library
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pcap.c - pcap utility routines
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pcap.h - header for backwards compatibility
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pcap_*.3pcap - manual entries for library functions
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pcap-filter.manmisc.in - manual entry for filter syntax
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pcap-linktype.manmisc.in - manual entry for link-layer header types
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ppp.h - Point to Point Protocol definitions
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savefile.c - offline support
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scanner.l - filter string scanner
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sunatmpos.h - definitions for SunATM capturing
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