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* set_elem: add timeout supportPatrick McHardy2015-04-093-0/+10
| | | | | Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* set: add support for set timeoutsPatrick McHardy2015-04-093-0/+12
| | | | | Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* list: fix prefetch dummyPatrick McHardy2015-03-261-1/+1
| | | | | | | | | | ../include/linux_list.h:385:59: warning: right-hand operand of comma expression has no effect [-Wunused-value] for (pos = list_entry((head)->next, typeof(*pos), member), \ ^ set.c:266:2: note: in expansion of macro 'list_for_each_entry' list_for_each_entry(elem, &set->element_list, head) { Signed-off-by: Patrick McHardy <kaber@trash.net>
* src: restore static array with expression operationsPablo Neira Ayuso2015-03-232-4/+0
| | | | | | | | | | | | | We cannot use __attribute__((constructor)) to register the supported expressions in runtime when the library is statically linked. This lead us to some explicit libnftnl_init() function that needs to be called from the main() function of the client program. This patch reverts 4dd0772 ("expr: use __attribute__((constructor)) to register expression"). Reported-by: Laurent Bercot <ska-devel@skarnet.org> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* parser: Add operation not supported error messageAlvaro Neira2015-03-171-0/+1
| | | | | | | | | | | If we try to import a ruleset in json or xml and the library was not compile with support for those, this shows a misleading error. To resolve this problem, this patch sets up EOPNOTSUPP by default when we create the nft_parse_err structure. Signed-off-by: Alvaro Neira Ayuso <alvaroneay@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* ruleset: add nft_ruleset_ctx_freeAlvaro Neira2015-03-131-0/+1
| | | | | | | | | | This function releases the ruleset objects attached in the parse context structure, ie. struct nft_parse_ctx. Moreover, this patch updates the nft_parse_ruleset_file to use it. Signed-off-by: Alvaro Neira Ayuso <alvaroneay@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* ruleset: fix crash if we free sets included in the set_listAlvaro Neira2015-02-241-0/+4
| | | | | | | | | | | | | | | | | When we parse a ruleset which has a rule using a set. First step is to parse the set, set up an ID and add it to a set list. Later, we use this set list to find the set associated to the rule and we set up the set ID to the expression (lookup expression) of the rule. The problem is that if we return this set to the callback function nft_ruleset_parse_file_cb() and we free this set, we have a crash when we try to iterate in the set list. This patch solves it, cloning the set and adding the new set to the set list. Signed-off-by: Alvaro Neira Ayuso <alvaroneay@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: split internal.h is smaller filesPablo Neira Ayuso2015-02-1711-2/+386
| | | | | | | | | 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>
* src: add support to import JSON/XML with the new command tagAlvaro Neira Ayuso2015-02-101-0/+32
| | | | | | | | | | | | | | | | | | | | | | | | This patch adds support to parse the new command tag in XML/JSON. This patch adds two new functions: * nft_ruleset_parse_file_cb * nft_ruleset_parse_buffer_cb The idea is to invoke the callback function that is passed as parameter is called for each object that is parsed from the corresponding input. Each callback has access to the nft_parse_ctx structure that provides the necessary context such as the command, the object type and the object itself. This change also adds support to update the content of a set incrementally. {"nftables":[{"add":[{"element":{"name":"blackhole","table":"filter", "family":"ip","key_type":7,"key_len":4,"set_elem":[{"key":{ "reg":{"type":"value","len":4,"data0":"0x0403a8c0"}}}]}}]}]} This also patch consolidates the xml/json ruleset import path. Signed-off-by: Alvaro Neira Ayuso <alvaroneay@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: add command tag in JSON/XML export supportAlvaro Neira Ayuso2015-02-102-0/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, we can't do incremental updates via JSON/XML. This patch enriches the existing output to indicate the kind of update that you want to perform. So, if we have a ruleset like: table ip filter { chain input { type filter hook input priority 0; } } The new output looks like: {"nftables":[{"add":[{"table":{"name":"filter",...}}]}]} ^^^^^ Where we explicitly indicate that we want to add a table. We support all the actions that we can do with nft, they are: - Add, delete and flush tables and chains. - Add, delete, replace and insert rules. - Add and delete sets. - Add and delete set elements. - Flush ruleset. You only need to add the command tag: {"nftables":[{"delete":[{...}, {...},...}]}]} ^^^^^^^^ The possible command tags that you can use are "add", "delete", "insert", "replace" and "flush". - Flush table or chain, eg.: {"nftables":[{"flush":[{"table":{"name":...}}]}]} - Delete table, chain, set or rule: {"nftables":[{"delete":[{"chain":{"name":...}]}]} - Replace a rule (you have to specify the handle): {"nftables":[{"replace":[{"rule":{...}}]}]} - Insert a rule: {"nftables":[{"insert":[{"rule":{...}}]}]} Signed-off-by: Alvaro Neira Ayuso <alvaroneay@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* include: add missing gen.h to Makefile.amlibnftnl-1.0.3Pablo Neira Ayuso2014-12-161-1/+2
| | | | | | Fixes make distcheck. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: consolidate XML/JSON exportationPablo Neira Ayuso2014-11-102-1/+82
| | | | | | | | | | | | | | Add new buffer class to consolidate the existing code to export objects in XML/JSON and use it. We save ~700 LOC with this change. The rule and set objects are not yet consolidated. It seems this would require some specific glue code per representation type since lists are arranged differently. This also consolidates the tag names, so we make sure the same are used from XML and JSON by placing them in include/buffer.h. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* expr: meta: Add cgroup supportAna Rey2014-11-101-1/+3
| | | | | | | | The kernel support is add in the commit: netfilter: nft_meta: add cgroup support Signed-off-by: Ana Rey <anarey@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: add support for nft_redir expressionArturo Borrero2014-10-302-0/+43
| | | | | | | This patch adds support for the new nft_redir expression. Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* ruleset: deconstify _get interfaceArturo Borrero2014-10-241-1/+1
| | | | | | | | Having this interface returning a const pointer makes very hard to modificate the content of a chain contained in a nft_ruleset. Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: add ruleset generation classPablo Neira Ayuso2014-09-192-2/+68
| | | | | | | | | | | | | | The generation object currently only contains the uint32_t that indicates the generation ID. I could have just add the API to return the uint32_t ID instead, but I think this API is easier to extend without adding new APIs. We can probably include meaningful statistics in the generation message in the future without much hassle. This patch also extends examples/nft-events.c. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* nf_tables.h: add NFTA_MASQ_UNSPECArturo Borrero2014-09-121-0/+1
| | | | | | | To keep this consistent with other nft_*_attributes. Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* expr: add new nft_masq expressionArturo Borrero2014-09-092-0/+17
| | | | | | | | This patch adds userspace support to nft_masq, the new expression to perform masquerade. Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* expr: nat: add support for the new flags attributeArturo Borrero2014-09-092-0/+3
| | | | | | | This patchs adds support for the new flags attribute in the nft_nat expression. Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com>
* expr: meta: Add devgroup supportAna Rey2014-09-031-0/+4
| | | | | | | | The kernel support is add in commit: netfilter: nf_tables: add devgroup support in meta expresion Signed-off-by: Ana Rey <anarey@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: get rid of cached copies of x_tables.h and xt_LOG.hPablo Neira Ayuso2014-08-313-205/+1
| | | | | | | | | | Keeping the full cached copy the of x_tables.h file in tree is too much for just the XT_EXTENSION_MAXNAMELEN constant. Similarly, xt_LOG.h is not actually required by the tests, we can use any whatever syntetic data to make sure the setter and getter provide the same result. So, let's get rid of these headers from the library tree. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* expr: meta: Add cpu support for meta expresionAna Rey2014-08-241-0/+2
| | | | | Signed-off-by: Ana Rey <anarey@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* expr: meta: Add pkttype supportAna Rey2014-08-241-0/+2
| | | | | | Signed-off-by: Alvaro Neira Ayuso <alvaroneay@gmail.com> Signed-off-by: Ana Rey <anarey@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* common: add batching interfacesPablo Neira Ayuso2014-08-141-0/+5
| | | | | | | | | | | | | | This patch adds the following new interfaces: int nft_batch_is_supported(void); void nft_batch_begin(char *buf, uint32_t seq); void nft_batch_end(char *buf, uint32_t seq); Quite likely this is going to be reused by third party applications requiring to put things in the batch. We already have potential clients for this code in nft and iptables-compat. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* set_elem: add nft_set_elems_nlmsg_build_payload_iter()Pablo Neira Ayuso2014-07-251-0/+3
| | | | | | | | | This new interface allows you to put as many set elements as possible into a netlink message. The iterator stores the last element that has fit into a netlink message, so you can continue adding more set elements across several netlink messages. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* set: add support for set mechanism selectionArturo Borrero2014-07-241-0/+2
| | | | | | | | | | This patch adds support to select the set mechanism. The kernel support was added in commit: c50b960 netfilter: nf_tables: implement proper set selection Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* expr: log: add support for level and flagsPablo Neira Ayuso2014-07-012-0/+6
| | | | | | This is required by changes scheduled for Linux kernel 3.17. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* set: add set ID supportPablo Neira Ayuso2014-05-193-0/+8
| | | | | | | Add the set ID (u32) which allows us to uniquely identify the set in the batch that is sent to kernel-space. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* include: synchronize nf_tables.h with nftables treePablo Neira Ayuso2014-05-191-2/+28
| | | | Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: add flag to add event wrapping in output functionsArturo Borrero2014-04-261-0/+6
| | | | | | | | | | | | | | This patch uses the flag option of each output function to print an event wrapper string in each object. In order to use this functionality, the caller must pass the corresponding flags: NFT_OF_EVENT_NEW / NFT_OF_EVENT_DEL. (I have slightly refactorized the original code to add the xml/json header and footer --pablo). Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* meta: Add support for input and output bridge interface nameTomasz Bursztyka2014-04-241-0/+4
| | | | | | | | | Add support for dedicated bridge meta key, related to device names: - NFT_META_BRI_IIFNAME - NFT_META_BRI_OIFNAME Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* include: add missing netfilter.hPablo Neira Ayuso2014-04-171-0/+2
| | | | | | | | | | | | | | | | CC chain.lo ../../src/chain.c: In function 'nft_hooknum2str': ../../src/chain.c:53:7: error: 'NFPROTO_INET' undeclared (first use in this function) ../../src/chain.c:53:7: note: each undeclared identifier is reported only once for each function it appears in make[3]: *** [chain.lo] Error 1 make[3]: se sale del directorio `/home/pablo/devel/scm/git-netfilter/libnftnl/libnftnl-1.0.1/_build/src' make[2]: *** [all-recursive] Error 1 make[2]: se sale del directorio `/home/pablo/devel/scm/git-netfilter/libnftnl/libnftnl-1.0.1/_build' make[1]: *** [all] Error 2 make[1]: se sale del directorio `/home/pablo/devel/scm/git-netfilter/libnftnl/libnftnl-1.0.1/_build' make: *** [distcheck] Error 1 Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* set_elems: delete unexisting exported symbolArturo Borrero2014-03-261-2/+0
| | | | | | | There is no function called 'nft_set_elem_nlmsg_parse()' Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* rule: add NFT_RULE_ATTR_USERDATA supportPablo Neira Ayuso2014-02-272-1/+5
| | | | | | This allows us to manipulate the user data area of the rule. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* include: get linux/netfilter/nf_tables.h in sync with kernel headerPablo Neira Ayuso2014-02-271-1/+2
| | | | Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: add nft_*_attr_{set|get}_data interfacePablo Neira Ayuso2014-02-275-0/+18
| | | | | | | | | | | | This patch adds two functions that allows you to validate the size of the attribute. This new functions provide a replacement for nft_rule_attr_set and nft_rule_attr_get. The data_len parameter was already passed to the {_set|_get} funcion in expressions. For consistency, add nft_rule_expr_{set|get}_data alias. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: early attribute type validation in nft_*_attr_setPablo Neira Ayuso2014-02-274-0/+8
| | | | | | | | This allows us to remove the default case in the switch, which show help to spot missing attribute support since gcc will spot a compilation warning. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* expr: add conntrack label match supportFlorian Westphal2014-02-181-0/+2
| | | | Signed-off-by: Florian Westphal <fw@strlen.de>
* Merge branch 'master' into next-3.14Pablo Neira Ayuso2014-02-0314-55/+384
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch includes changes to adapt this branch to the library rename that happened in the master branch. Conflicts: src/Makefile.am src/expr/cmp.c src/expr/ct.c src/expr/data_reg.c src/expr/meta.c tests/jsonfiles/01-table.json tests/jsonfiles/02-table.json tests/jsonfiles/64-ruleset.json tests/xmlfiles/01-table.xml tests/xmlfiles/02-table.xml
| * include: add cached copy of linux/kernel.hPablo Neira Ayuso2014-01-221-0/+29
| | | | | | | | | | | | | | | | | | | | | | This fixes the following compilation warning when compiling with old kernel headers. CC expr/target.lo expr/target.c: In function ‘nft_rule_expr_target_build’: expr/target.c:127: warning: implicit declaration of function ‘__ALIGN_KERNEL’ Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| * include: add stdint.h to common.hArturo Borrero2014-01-211-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | This fixes: /usr/local/include/libnftnl/common.h:25:49: error: unknown type name ‘uint16_t’ /usr/local/include/libnftnl/common.h:25:63: error: unknown type name ‘uint16_t’ /usr/local/include/libnftnl/common.h:26:10: error: unknown type name ‘uint16_t’ /usr/local/include/libnftnl/common.h:26:25: error: unknown type name ‘uint32_t’ Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| * build: resolve compile error involving XT_EXTENSION_MAXNAMELENJan Engelhardt2014-01-211-0/+185
| | | | | | | | | | | | | | | | 2.6.32 headers in /usr/include/linux again. Ship a copy of x_tables.h from Linux 3.11. Signed-off-by: Jan Engelhardt <jengelh@inai.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| * rename library to libnftnllibnftnl-1.0.0Pablo Neira Ayuso2014-01-209-26/+26
| | | | | | | | | | | | We plan to use this library name for the higher layer library. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| * src: add interface to parse from fileArturo Borrero2014-01-095-0/+12
| | | | | | | | | | | | | | | | This patch adds a new API to parse rule-set expressed in XML/JSON from a file. A new enum nft_parse_input type is added for this purpose. Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| * src: new error reporting approach for XML/JSON parsersÁlvaro Neira Ayuso2014-01-066-6/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | I have added a new structure for reporting some errors in parser that we can't cover with errno. In this patch, we have three errors that we can't cover with errno: NFT_PARSE_EBADINPUT : Bad XML/JSON format in the input NFT_PARSE_EMISSINGNODE : Missing node in our input NFT_PARSE_EBADTYPE : Wrong type value in a node Signed-off-by: Alvaro Neira Ayuso <alvaroneay@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| * include: update netlink.h to 3.13Tomasz Bursztyka2013-12-121-5/+84
| | | | | | | | | | | | | | | | Use kernel header from 3.13-rc upstream kernel, this includes documentation changes that were missing. Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| * examples: nft-rule-add: use existing batch infrastructurePablo Neira Ayuso2013-12-101-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch reworks the existing example to add the rule: nft add rule ip filter input tcp dport 22 counter It uses the existing nfnl batching approach using the generic mnl netlink message batching infrastructure. It also removed the code that uses xtables compat code. Based on original patch by Arturo Borrero Gonzalez. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* | expr: ct: Add support for setting the markKristian Evensen2014-01-152-0/+3
| | | | | | | | | | | | | | | | | | This patch adds userspace support for setting properties of tracked connections. Currently, the connection mark is supported. This can be used to implemented the same functionality as iptables -j CONNMARK --save-mark. Signed-off-by: Kristian Evensen <kristian.evensen@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* | libnftables: replace netfilter.h by sanitized headerPatrick McHardy2014-01-151-6/+4
| | | | | | | | Signed-off-by: Patrick McHardy <kaber@trash.net>
* | src: fix compilation due to missing NFPROTO_INET definitionPablo Neira Ayuso2014-01-101-0/+73
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds a copy of the include/linux/netfilter.h kernel header that defines NFPROTO_INET, so libnftables compiles with relatively old kernel headers in the system. chain.c: In function 'nft_hooknum2str': chain.c:53:7: error: 'NFPROTO_INET' undeclared (first use in this function) This required to reorder and remove unneeded headers in src/expr/data_reg.c to avoid a compilation warning due to redefinition of __visible. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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