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* src: get rid of aliases and compatPablo Neira Ayuso2016-12-201-16/+16
| | | | | | | | | | | This machinery was introduced to avoid sudden compilation breakage of old nftables releases. With the upcoming release of 0.7 (and 0.6 which is now 6 months old) this is not required anymore. Moreover, users gain nothing from older releases since they are half-boiled and buggy. So let's get rid of aliases now. Bump LIBVERSION and update map file. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* expr: call expr->ops->snprintf only if definedPablo Neira Ayuso2016-11-291-0/+3
| | | | | | | The notrack expression comes with no ->ops->snprintf, so skip this from nftnl_expr_snprintf() if not set. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: add notrack expressionPablo Neira Ayuso2016-10-201-2/+5
| | | | | | | | Register this simple expression with no attributes. Make sure libnftnl doesn't crash when no build and parse indirections are defined, as it is the case for this expression. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: Implement rule comparisonCarlos Falgueras García2016-08-171-0/+10
| | | | | | | | | | | | | | | | | | | | This patch implements the function: bool nftnl_rule_cmp(const struct nftnl_rule *r1, const struct nftnl_rule *r2) for rule comparison. Expressions within rules need to be compared, so also has been created the function: bool nftnl_expr_cmp(const struct nftnl_expr *e1, const struct nftnl_expr *e2); Also includes all expression comparators. Signed-off-by: Carlos Falgueras García <carlosfg@riseup.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: Fix nftnl_*_get_data() to return the real attribute lengthCarlos Falgueras García2016-07-111-0/+1
| | | | | | | | | | | All getters must set the memory size of the attributes, ie. this includes the nul-termination in strings. For references to opaque objects hidden behind the curtain, report a zero size. Signed-off-by: Carlos Falgueras García <carlosfg@riseup.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: return value on setters that internally allocate memoryPablo Neira Ayuso2016-06-151-8/+7
| | | | | | | | So the client can bail out of memory allocation errors. Or in case of daemon, make sure things are left in consistent state before bailing out. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* libnftnl: constify object arguments to various functionsPatrick McHardy2016-05-091-3/+3
| | | | | | | | | flow table support needs constant object arguments to printing functions to avoid ugly casts. While at it, also constify object arguments to message construction, destructor and a few helper functions. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: rename EXPORT_SYMBOL to EXPORT_SYMBOL_ALIASFlorian Westphal2015-11-241-16/+16
| | | | | | | Future symbols don't need backwards-compat aliases. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: rename NFTNL_RULE_EXPR_ATTR to NFTNL_EXPR_Pablo Neira Ayuso2015-09-071-3/+3
| | | | | | So we get a shorter constant definition for expression attributes. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: rename nftnl_rule_expr to nftnl_exprPablo Neira Ayuso2015-09-071-48/+48
| | | | | | | Use a shorter name for this, morever this can be used from sets so the _rule_ is misleading. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: rename existing functions to use the nftnl_ prefixPablo Neira Ayuso2015-09-071-38/+38
| | | | | | | | | So we can use the nft_* prefix anytime soon for our upcoming higher level library. After this patch, the nft_* symbols become an alias of the nftnl_* symbols. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: introduce nftnl_* aliases for all existing functionsPablo Neira Ayuso2015-09-021-16/+16
| | | | | | | | | | | This patch introduces the nftnl_ symbols as aliases for the existing nft_ symbols through the EXPORT_SYMBOL(...) macro. We would like to use the nft_* prefix from our upcoming higher level library, meanwhile with this move we avoid that old binaries break because of missing symbol dependencies. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* expr: seperate expression parsing and building functionsPatrick McHardy2015-04-141-6/+50
| | | | | | | | | | | | The expression build function currently assumes to be only used from rule context and actually builds rule attributes. Fix that and only build the expression. Also it seems to have been exported by accident, undo that. Additionally, move the expression parsing function from rule parsing and also remove any assumptions about being used in rule context. Signed-off-by: Patrick McHardy <kaber@trash.net>
* src: split internal.h is smaller filesPablo Neira Ayuso2015-02-171-3/+0
| | | | | | | | | The internal.h file started being a small file with private definitions. Its size has been increasing over time more and more, so let's split this in small header files that map to the corresponding class where the functions belong to. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* rename library to libnftnllibnftnl-1.0.0Pablo Neira Ayuso2014-01-201-1/+1
| | | | | | We plan to use this library name for the higher layer library. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* expr: fix leak in target and match expressionsPablo Neira Ayuso2013-11-181-0/+3
| | | | | | | | | | | Release internal data area for match and target expressions. ==30104== 68 bytes in 1 blocks are definitely lost in loss record 1 of 1 ==30104== at 0x4C2B514: calloc (vg_replace_malloc.c:593) ==30104== by 0x400C2F: main (nft-expr_match-test.c:65) Reported-by: Ana Rey Botello <anarey@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: replace size_t by uint32_t in set/get interfacesPablo Neira Ayuso2013-09-191-7/+7
| | | | | | | | | | | | This patch breaks the ABI to shrink the size parameter from 8 to 4 bytes in x86_64. The maximum length of netlink attributes is 2 bytes, so 4 bytes as attribute payload length should be enough. After this patch, size_t is only used in the nft_*_snprintf interfaces. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* expr: add nft_rule_expr_get_u16 and nft_rule_expr_set_u16Pablo Neira Ayuso2013-08-171-0/+23
| | | | | | Now required since log has two u16 fields. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: add xfree and use itPablo Neira Ayuso2013-08-061-1/+1
| | | | | | | | This patch adds xfree, a replacement of free that accepts const pointers. This helps to remove ugly castings that you usually need to calm down gcc. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* expr: refactor nft_rule_expr_getPablo Neira Ayuso2013-07-211-8/+6
| | | | | | Merge common checking for attribute set in nft_rule_expr_get. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: simplify getter logicPablo Neira Ayuso2013-07-181-0/+3
| | | | | | | | This patch refactors the getter code to simplify it. The default cases have been removed so gcc will spot a warning if an attribute is not handled appropriately. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* expr: add nft_rule_expr_snprintfPablo Neira Ayuso2013-06-191-0/+13
| | | | Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: constify first parameter of all nft_*_getPablo Neira Ayuso2013-06-171-5/+5
| | | | Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: add nft_*_attr_is_setPablo Neira Ayuso2013-06-171-0/+6
| | | | Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: constify nft_*_attr_set and nft_*_attr_set_strPablo Neira Ayuso2013-04-141-1/+1
| | | | Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* initial version of libnftablesPablo Neira Ayuso2012-10-111-0/+189
It adds support for table, chain and rule handling. This also includes expression handling for each rule. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>