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* src: Add GPLv2+ header to .c files of recent creationPablo Neira Ayuso2023-01-021-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch comes after a proposal of mine at NFWS 2022 that resulted in agreement to license recent .c files under GPLv2+ by the attendees at this meeting: - Stefano Brivio - Fernando F. Mancera - Phil Sutter - Jozsef Kadlecsik - Florian Westphal - Laura Garcia - Arturo Borrero - Pablo Neira It has already happened that one of the external library dependencies was moved to GPLv3+ (libreadline), resulting in a change to libedit by default in b4dded0ca78d ("configure: default to libedit for cli"). I have added the GPLv2+ header to the following files: Authors ------- src/cmd.c Pablo src/fib.c Florian src/hash.c Pablo src/iface.c Pablo src/json.c Phil + fixes from occasional contributors src/libnftables.c Eric Leblond and Phil src/mergesort.c Elise Lenion src/misspell.c Pablo src/mnl.c Pablo + fixes from occasional contributors src/monitor.c Arturo src/numgen.c Pablo src/osf.c Fernando src/owner.c Pablo src/parser_json.c Phil + fixes from occasional contributors src/print.c Phil src/xfrm.c Florian src/xt.c Pablo Eric Leblond and Elise Lennion did not attend NFWS 2022, but they acknowledged this license update already in the past when I proposed this to them in private emails. Update COPYING file too to refer that we are now moving towards GPLv2 or any later. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* osf: add parse and build userdata interfacePablo Neira Ayuso2019-12-171-0/+13
| | | | | | | Add support for meta userdata area. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Florian Westphal <fw@strlen.de>
* osf: add version fingerprint supportFernando Fernandez Mancera2019-04-081-3/+10
| | | | | | | | | | | | | | | Add support for version fingerprint in "osf" expression. Example: table ip foo { chain bar { type filter hook input priority filter; policy accept; osf ttl skip name "Linux" osf ttl skip version "Linux:4.20" } } Signed-off-by: Fernando Fernandez Mancera <ffmancera@riseup.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: expr: remove expr_ops from struct exprFlorian Westphal2019-02-081-2/+2
| | | | | | | | size of struct expr changes from 144 to 128 bytes on x86_64. This doesn't look like much, but large rulesets can have tens of thousands of expressions (each set element is represented by an expression). Signed-off-by: Florian Westphal <fw@strlen.de>
* osf: add ttl option supportFernando Fernandez Mancera2018-10-231-2/+22
| | | | | | | | | | | | | | Add support for ttl option in "osf" expression. Example: table ip foo { chain bar { type filter hook input priority filter; policy accept; osf ttl skip name "Linux" } } Signed-off-by: Fernando Fernandez Mancera <ffmancera@riseup.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: osf: load pf.os from expr_evaluate_osf()Fernando Fernandez Mancera2018-08-311-1/+0
| | | | | | | | Remove osf_init variable and call nfnl_osf_load_fingerprints() from expr_evaluate_osf() instead of doing that from do_command_add() path. Signed-off-by: Fernando Fernandez Mancera <ffmancera@riseup.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: osf: add json supportFlorian Westphal2018-08-291-0/+2
| | | | Signed-off-by: Florian Westphal <fw@strlen.de>
* src: osf: import nfnl_osf.c to load osf fingerprintsFernando Fernandez Mancera2018-08-241-0/+1
| | | | | | | | Import iptables/utils/nfnl_osf.c into nftables tree with some changes in order to load OS fingerprints automatically from pf.os file. Signed-off-by: Fernando Fernandez Mancera <ffmancera@riseup.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: use NFT_OSF_MAXGENRELEN instead of IFNAMSIZ in osf.cFernando Fernandez Mancera2018-08-071-3/+1
| | | | | | | | As no "genre" in pf.os exceed 16 bytes of length, we reduce NFT_OSF_MAXGENRELEN parameter to 16 bytes and use it instead of IFNAMSIZ. Signed-off-by: Fernando Fernandez Mancera <ffmancera@riseup.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: introduce passive OS fingerprint matchingFernando Fernandez Mancera2018-08-041-0/+35
Add support for "osf" expression. Example: table ip foo { chain bar { type filter hook input priority 0; policy accept; osf name "Linux" counter packets 3 bytes 132 } } Signed-off-by: Fernando Fernandez Mancera <ffmancera@riseup.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>