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Change Log

All relevant changes are documented in this file. For a complete list of contributors, see the GIT commit log.

v1.3

Changes

  • Don't try to configure TX buffer max size for every raw socket. Instead, add a new API that can be used when needed, called libnet_setfd_max_sndbuf().

Fixes

v1.2 - 2019-10-16

Release curated by Sam Roberts and Joachim Nilsson.

Changes

  • Removed Lua bindings from repo and dist files, now available separately
  • Removed generated HTML and Nroff (man pages) documentation files, must be regenerated with Doxygen using make doc
  • Add pkg-config support with libnet.pc, replaces libnet-config tool, although it is kept for compatibility for now
  • Factorize socket setup code for socket opening to provide output device selection for IPv4
  • Make libnet_get_hwaddr() work with 802.1q interfaces in bpf (BSD)
  • New API for OSPF HELLO messages, with neighbor

Fixes

  • Use getifaddrs() on OpnBSD and Linux
  • For samples, netinet/in.h is not on windows
  • Fix errors with missing IPPROTO_MH on windows
  • Fix build error on Mac OS X
  • Fix #34 checksum caculation when IPv6 extension headers being used
  • Remove unneeded trailing -Wl from -version-info line
  • libnet_build_snmp() fix warning
  • Use LIBNET_*RESOLVE const in libnet_name2addr*
  • Fix i486 sample synflood6 warning
  • Some samples need #include<netinet/in.h> for IPPROTO_* on OpenBSD 5.2
  • Fix gcc warnings
  • Check for socklen_t. Suggested by g.esp and Stefanos Harhalakis
  • libnet: update for obsolete INCLUDE directive
  • Fix warning inside comment
  • Automatic link options #pragma comment(lib, ...) are only for MSVC
  • Fix several warnings for MS C/C++ compiler
  • libnet_open_raw4() doesn't return a SOCKET on win32
  • Fixes error messages sometimes include newline, sometimes not
  • Properly set l->err_buf if libnet_ifaddrlist() fails
  • dlpi: Try harder to find the device for the interface
  • dlpi: Correctly extract unit number from devices with numbers in their name
  • Make interface selection work for interfaces with multiple addresses
  • Fix memory leak, device list needs to freed after use
  • Fix file descriptor leak in libnet_ifaddrlist()
  • Fix libnet_get_hwaddr() for large(!) number of interfaces
  • Fix to support musl libc, removes support for GLIBC <2.1
  • Fix win32 buffer overrun in libnet_get_ipaddr4()
  • Interface selection was ignoring interfaces with IPv6
  • Use LIBNET_API on public functions, instead of an export file
  • Add Visual Studio 2010 project files, with build instructions
  • Define INET6 on IRIX, making libnet compile cleanly
  • Check for FreeBSD pre-11 before enabling LIBNET_BSD_BYTE_SWAP
  • Use LIBNET_BSDISH_OS and LIBNET_BSD_BYTE_SWAP on Darwin
  • Add BSD byteswap for Darwin. Otherwise sendto( returns EINVAL
  • netinet/in.h is needed for IPPROTO_ and sockaddr_in

v1.1.6 - 2012-03-06

Release curated by Sam Roberts.

Changes

  • Note about why including libnet.h breaks dnet.h/dumbnet.h (Sam Roberts)
  • Clean up use of single and bracket quotes. (Sam Roberts)
  • FreeBSD and Solaris volunteers to contibute. (Sam Roberts)
  • Prep for 1.1.6 release, such as bumping version (Sam Roberts)
  • Add people who have volunteered to check release candidates. (Sam Roberts)
  • Rework libnet_autobuild_ipv6() to eliminate code duplication. (Sam Roberts)
  • Implemented libnet_autobuild_ipv6() (repolho)
  • Implemented unix version of libnet_get_ipaddr6() (repolho)
  • Reintroduce libnet_pblock_record_ip_offset() which is empty. (Sam Roberts)
  • Make clear that all contributions are under libnet copyright. (Sam Roberts)
  • Update for doxygen 1.7.4. (Sam Roberts)
  • Note that PORTED is no longer maintained. (Sam Roberts)
  • Note that CONTRIB is no longer maintained. (Sam Roberts)
  • Prep for upcoming 1.1.6 release. (Sam Roberts)
  • Remove BUGS, it referred to non-existent code. (Sam Roberts)
  • Reworked icmpv6 patch to parallel the form of icmpv4 support. (Sam Roberts)
  • Don't depend on netinet/ip.h. (Sam Roberts)
  • Remove unused variable. (Sam Roberts)
  • Support building ICMPv6 packets. (someone)
  • Use SO_BINDTODEVICE to force packets out opened device. (someone)
  • Always use an IPPROTO of TCP when calculating TCP checksums. (Sam Roberts)
  • Use correct addr type for addrlen calculation. (someone)
  • libnet_build_igmp reserved field was mistakenly called 'code' (Sam Roberts)
  • Documentation doesn't include any gif files. (Sam Roberts)
  • Enable IPV6 support on Solaris 11. (Rich Burridge)
  • Presence of linux's PF_PACKET sockets is now detected. The acinclude.m4 merged in from packetfactory's 1.1.3-rc branch mysteriously assumed that that there was no PF_PACKET if the target OS was linux, which is the opposite of what we want. (Sam Roberts)
  • pblock_append deals with raw memory and structs, so declare it correctly (Sam Roberts)
  • Clarified types and sizes of DHCP/BOOTP chaddr, sname, and file. chaddr is a hardware address, with size specified seperately, whereas sname and file are null terminated strings. (Sam Roberts)
  • Explicitly ignore return value of write (some systems now warn about this). (Sam Roberts)
  • Synchronize comment about h_len with parameter name in function. (Sam Roberts)
  • mkinstalldirs is replaced by autogen.sh. Maybe it shouldn't be checked in? (Sam Roberts)
  • autogen retries if /sw/... doesn't exist (Sam Roberts)

Fixes

  • Only use getifaddrs() if it exists. (reported by Dagobert Michelsen) (Sam Roberts)
  • ICMPv6 struct is too long, so use length macro ([email protected]) (Sam Roberts)
  • ICMPv6 pblock sizes are needed to calculate IPv6's ip_len (reported by [email protected]) (Sam Roberts)
  • Fix doc comment format errors reported by doxygen. (Sam Roberts)
  • Fixed typo in error message. (Thomas Habets)
  • Trying to fix write errors (Víctor Martínez)
  • Fix libnet_build_igmp() to not reverse the order of the ip address. libnet APIs that take IP addresses as a uint32_t expect them to already be in network byte order. (Sam Roberts)
  • Fixes a buffer overflow issue when copying chaddr, file, and sname fields to the DHCP header. (allfro)
  • Fixes improper calculation of header size when libnet_pblock_probe is called. payload_s must be added to the header length in order to accommodate for the existence of a non-NULL payload. Otherwise the user is prompted with a 'memcpy would cause overflow' error and the program exits. (allfro)
  • Fixes incorrect memory block size set in the timeexceed and redirect builders. The n variable does not add the size of the payload (payload_s) for proper allocation of the buffer when payload is not NULL and payload_s is greater than 0. This results in a memcpy buffer overflow error when libnet_pblock_append is called exiting the program. (allfro)
  • Fixes a bug that incorrectly converts the addr, mask, and next_hop fields to network byte order. Users will usually call libnet_name2addr4 to fill these fields and this function already provides a network byte-ordered value. (allfro)
  • snap parameter was getting copied into the dhost field. (Sam Roberts)
  • h_len is no longer used, so pass zero. Coverity noticed that stack garbage was being passed instead of a valid value, its just that the value isn't used, and incluing l->total_size is wrong when the pblock is being updated (though it will work on pblock creation). (Sam Roberts)
  • Length n should include the value_hdr. (Sam Roberts)
  • Coverity: UNINIT (Jiri Popelka)
  • Coverity: REVERSE_INULL (Jiri Popelka)
  • Coverity: RESOURCE_LEAK (Jiri Popelka)
  • Coverity: OVERRUN_STATIC (Jiri Popelka)
  • Coverity: OVERRUN_STATIC (Jiri Popelka)
  • Coverity: OVERRUN_STATIC (Jiri Popelka)
  • Coverity: FORWARD_NULL (Jiri Popelka)
  • Coverity: FORWARD_NULL (Jiri Popelka)
  • Coverity: CHECKED_RETURN (Jiri Popelka)
  • build_ipv6: set higher traffic class bits (Ulrich Weber)
  • Fix missing uint instead of u_int (Dagobert Michelsen)

v1.1.5 - 2010-11-03

Release curated by Sam Roberts.

Changes

  • IRIX: Get MAC address from ioctl(), not by spawning shell. (Thomas Habets)
  • Cleaned up implementations of libnet_get_hwaddr(), some leaked memory, one returned a pointer to data on the stack, and the others return a pointer to static data. I'm settling on the non-reentrant static data form. (Sam Roberts)
  • Further simplify autogen.sh (Sam Roberts)
  • Removed dependency on net/bpf.h, and on pcap.h. (Sam Roberts)
  • LBL_ALIGN check is unused, removing. (Sam Roberts)
  • Don't include pcap.h if we've already got net/bpf.h, pcap has it's own bpf. (Sam Roberts)
  • Get DLT types from the source, pcap.h. (Sam Roberts)
  • Use autoconf -ivf in autogen.sh (suggested by [email protected]) (Sam Roberts)
  • Add a link to the old docs. (Sam Roberts)
  • Added links to github and sourceforge. (Sam Roberts)
  • Replace C99/C++ comments with traditional C comments. ([email protected]) (Sam Roberts)
  • Closer backwards compat, assume its ipv4 if it's not ipv6. This seems totally wrong, but so it goes. (Sam Roberts)
  • Try using the ip_len header field to guess the input buffer's size. (Sam Roberts)
  • libnet_do_checksum(), despite being "internal", is used by external code. libnet needs to maintain backwards API compatibility, tcpsic from the isic package is an example of a binary failing when calling the new API with the old arguments. (Sam Roberts)
  • Use libtool-1 or libtool-2 whatever available ([email protected]) (Sam Roberts)
  • Remove dead code. (Sam Roberts)
  • h_len is calculated for ip, udp, tcp, icmp, and igmp, so is allowed to be zero. (Sam Roberts)
  • Avoid mallocing zero bytes, it perturbs electric fence. (Sam Roberts)
  • ip_offset is now calculated on the fly, and UDP and TCP no longer use h_len (Sam Roberts)
  • IP offset calculation should allow nesting of IP protocols. (Sam Roberts)
  • Remove gccisms in bitfield definitions. (Sam Roberts)
  • injection type of LIBNET_NONE, for packet construction without injection (also, more const correctness) (Sam Roberts)
  • Notes about checksumming. (Sam Roberts)
  • Updated comments and notes. (Sam Roberts)
  • Added missing pblock types, and made strings consistent with definitions. (Sam Roberts)
  • Change version policy, we will be 1.1.4 until 1.1.5 is released. (Sam Roberts)
  • Bring CHANGELOG up to date with today, and script used to generated it. (Sam Roberts)
  • Begin implementation and tests for repairing pblocks after an update. (Sam Roberts)
  • Clarifications in document comments. (Sam Roberts)
  • Don't doxygen process internal header libnet-headers.h (Sam Roberts)
  • Note about build_data, which doesn't update ip_offset, among other problems. (Sam Roberts)
  • Why don't TCP and UDP use the DATA pblock type? (Sam Roberts)
  • whitespace cleanup (Sam Roberts)
  • Summarize changes for log. (Sam Roberts)
  • Reindented, removing hard tabs, and using consistent brace positioning. (Sam Roberts)
  • configure.in: Check for uint{16,32,64}_t (Thomas Habets)
  • Use uint64_t, not u_int64_t (Thomas Habets)
  • configure.in: check for gethostbyname2() (Thomas Habets)
  • define a lying gethostbyname2() if it's not defined (Thomas Habets)
  • define STDOUT_FILENO if it's not defined (Thomas Habets)
  • Configure switch to install samples (Sam Roberts)
  • Attempt at applying a patch to get installable samples, which doesn't work. (Sam Roberts)
  • Convert CRLF to LF. (Sam Roberts)
  • Auto* changes to work on OS X from git checkout. (Sam Roberts)
  • Add srcdir to include path. (Sam Roberts)
  • Beginning 1.1.5 development. (Sam Roberts)

Fixes

  • Compile fix for IRIX (added includes) (Thomas Habets)
  • Don't explicitly check for UID 0, we may have capabilities even if not root. (Thomas Habets) (Sam Roberts)
  • Visual C++ compiler(v9.0) uses bitfield type as a hint to pad the bitfield, so struct was too long. (Sam Roberts)
  • Make libnet_get_hwaddr() work in the last few releases of OpenBSD ([email protected]) (Sam Roberts)
  • Don't distribute libnet.h, it is generated by configure ([email protected]) (Sam Roberts)
  • AIX build failures fixed, cause was inclusion of system headers libnet no longer uses ([email protected]) (Sam Roberts)
  • checksum would segfault if a IP checksum was requested for a non-ipv4 header (Sam Roberts)
  • merged icmpv6 patch in, but I believe either it or the sample/icmp6_unreach generates the cksum incorrectly ([email protected]) (Sam Roberts)
  • Avoid looking at /dev and /usr/include when cross-compiling ([email protected]) Alon: The following code support cross compiling: 1. You CANNOT check for /usr/include stuff as cross compiler is installed else-where. Autoconf know how to do this, use its header detection logic and ask the result. 2. Testing for /dev/ can be done only when not cross compiling... (Sam Roberts)
  • Corrected target_os check, it was broke for linuxgnu, and m4 syntax was invalid ([email protected]) Alon:The following change is needed in order to solve two issues: 1. linuxgnu and such target os. 2. You cannot set variable with space before '=' as it tries to execute the variable... 3. Print result of test in case of linux (Sam Roberts)
  • --with-link-layer broken, was using wrong macro name, and didn't include all link types (Sam Roberts)
  • ac_cv_c_bigendian is yes, not "big" ([email protected]) (Sam Roberts)
  • libnet_t's fd should be initialized to an invalid value, or libnet_destroy() will close stdin. (Sam Roberts)
  • Alon's use of AC_CHECK_HEADERS fails to detect headers. Reverted part of 57acd56f09158decb69f301e7547ce8cde6ac63f (Sam Roberts)
  • With link_none, the link apis were failing with not error message. (Sam Roberts)
  • man doc makefile wasn't correctly referring to the srcdir ([email protected]) (Sam Roberts)
  • autotools patches for cross compiling and seperate builddir ([email protected]) (Sam Roberts)
  • html doc makefile wasn't correctly referring to the srcdir ([email protected]) (Sam Roberts)
  • libnet_build_tcp() was not returning the ptag. (Sam Roberts)
  • Packet boundaries are now passed to _do_checksum(), so it can validate its input. Hopefully, this will end the recurring segmentation faults due to buffer overruns. (Sam Roberts)
  • TCP building is triggering memory overwrites; closer examination shows the link list manipulation to be wrong, and the checksumming approach to be incapable of working. I reworked code to simplify and clarify how it works currently, in preparation to fixing it. (Sam Roberts)
  • Null the pointer in the about-to-be-freed structure, not the one on the stack. (Sam Roberts)
  • libnet_pblock_insert_before() didn't remove ptag2 from old location (Sam Roberts)
  • Declared many constant arguments as const, const-correct code spews warnings when built against libnet. (Sam Roberts)
  • Include pcap DLT_ types from correct header, was using an internal one before. (Sam Roberts)
  • Declared many constant arguments as const, const-correct code spews warnings when built against libnet. (Sam Roberts)
  • libnet_clear_packet() wasn't clearing all packet context. (Sam Roberts)
  • Add libnet_dll.c as extra, so its there for win32, and build libnet_link.c (Sam Roberts)
  • This file wasn't being built, and needed to include bpf to build. (Sam Roberts)
  • Forgot to make device a const string here, too. (Sam Roberts)
  • make string argument constant (Sam Roberts)
  • only ignore Makefile in libnet/ (Sam Roberts)
  • Replace u_intX_t with C99 uintX_t. (Thomas Habets)
  • pclose() following popen(), not fclose() (Thomas Habets)
  • snoof & dlpi: don't free on libnet_link_close() (Thomas Habets)
  • The non-standard types are no longer used. (Sam Roberts)
  • /sw/.. path doesn't always exist (Sam Roberts)
  • src/libnet_link_snoop.c: Only fclose if `f!=NULL (Thomas Habets)
  • rc/libnet_link_snoop.c`: fixed snoop-based backend. Works on IRIX. (Thomas Habets)
  • Pointers not cleared after free could lead to double deallocation. (Sam Roberts)
  • Update autobuild endianness and unaligned checks. (Mike Frysinger) (Sam Roberts)
  • Adjust srcdir and builddir so libnet can build out-of-tree (Robin Getz/Mike Frysinger) (Sam Roberts)

v1.1.4 - 2009-06-09

Release curated by Sam Roberts.

Changes

  • Strip CRLF from files not in win32/ (Robert Scheck)

Fixes

[v1.1.3][] - 2009-05-11

Merged 1.1.3 release candidate from packet factory, 1.1.2, debian patches, and my own fixes, including bugs causing memory corruption.

Release curated by Sam Roberts.

Changes

  • Convert from latin-1 to utf-8, from Robert Scheck. (Sam Roberts)
  • Removed CVS crud, again. (Sam Roberts)
  • Applied autotools cleanup patch from Stefanos. (Sam Roberts)
  • Applied patch from Stefanos to remove the autotools ephemera that leaked back in. (Sam Roberts)
  • Updated .so revision to be one backwards compatible interface after 1.1.2.1-fork's. (Sam Roberts)
  • merged autogen.sh from 1.1.3, now ltmain.sh comes from autogen.sh (Sam Roberts)
  • Update .so version to be one src change past the last debian release. Debian patches to v1.1.2.1 used 4:0:3, in error, so we use 5:0:4, as per the rules. See Makefile.am comments for reference. (Sam Roberts)
  • autotools merged from v1.1.3 to v1.1.2 (Sam Roberts)
  • Remove autotools. And some garbage local files that should not have been in upstream tarball. (Sam Roberts)
  • Removed object files and cvs conflict residue contained in original package. (Sam Roberts)
  • doxygen configuration updated, html seems fine - I don't know about the man pages. (Sam Roberts)
  • strip CVS subdirectories from upstream package (Sam Roberts)
  • Added a libnet_version() function
  • Internals:
    • added a payload builder macro
    • Added an HSRP builder
  • Added AC_PREREQ(2.50) to configure.in to come correct
  • Added a libnet UDP header prototype. We need to add an entire exported interface for the sole purpose of casting captured packets, this will presumably be a part of the pcap integration.
  • Added libnet_adv_write_raw_ipv4()
  • Updated the autoconf/automake stuff to be up to date with the latest versions. We now use libtool.
  • Changed all empty function prototypes to contain the void keyword
  • Removed all C++ style comments
  • Removed the configure.in check for strerror()

Fixes

  • Fixed various errors, including memory corruption, when IPv4 options are modified. (Sam Roberts)
  • Fixed doxygen errors and warnings, and added a deveoper script to prepare libnet. (Sam Roberts)
  • Patches from Stefanos. (Sam Roberts)
  • Fix for debian bug 418975, IPv6 wasn't updating ip_offset. See http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=418975 and sample test_ipv6_icmpv4.c for more info and reproduction. (Sam Roberts)
  • 802.1Q and 802.1X header documentation was incorrectly using /** /** is reserved for doxygen documentation comments, and they didn't have any. That those packet headers, and no others, were marked that way was causing man pages to be generated for them, incomplete man pages that then were being hacked by debian patches 02- and 03-. (Sam Roberts)
  • Bug fixes and reproduction code for ip_offset accounting problem in libnet_build_ipv4() (Sam Roberts)
  • debian patch 06 attempts to free the wrong pointer, and also leaks memory from the inner loop. (Sam Roberts)
  • libnet (inconsistently) uses various signed and/or unsigned typedefs instead of char ANSI C uses char for string literals and the standard library, so this generates many warnings. I've fixed a number of the places where types representing null-terminated strings weren't typed correctly. (Sam Roberts)
  • Merged Debian fixes:
  • Fixed a bug in libnet_build_ntp() where two arguments werent used due to a typo
  • Fixed a bug ln libnet_name2addr4() in which it didnt call hstrerror
  • Fixed a memory leak in libnet_if_addr.c
  • Fixed the cdp.c sample code
  • Fixed the checksum function
  • Fixed a signed/unsigned comparison warning in the LIBNET_DO_PAYLOAD() macro