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* src: get rid of _attr_ infix in new nftnl_ definitionsPablo Neira Ayuso2015-09-071-1/+1
| | | | | | | The function names are already large, trim off the _ATTR_ infix in the attribute definitions. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: get rid of _ATTR_ infix in new nfntl_ definitionsPablo Neira Ayuso2015-09-071-5/+5
| | | | | | | The constant names are already large, trim off the _ATTR_ infix in the attribute definitions. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: rename nftnl_rule_expr to nftnl_exprPablo Neira Ayuso2015-09-071-4/+4
| | | | | | | 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 Ayuso2015-09-071-56/+56
| | | | | | | | | 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>
* expr: data_reg: use 'reg' instead of 'data_reg'Pablo Neira Ayuso2014-11-101-2/+2
| | | | | | | | | | | | data_reg is unnecessarily long name and it always has to be wrapped by another data node. This will allow us to represent data not only as registers if needed. Get rid of 'cmpdata' and 'immediatedata' too and use 'data' instead to wrap 'reg' so these are consistent with the bitwise expression. No reason for such specific tag per expression. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: cleanup in mxml and jansson regarding set_id parsingArturo Borrero2014-10-111-2/+2
| | | | | | | | | | | | | | | | | | jansson.c: In function 'nft_jansson_expr_parse': jansson.c:212:6: warning: pointer targets in passing argument 3 of 'nft_set_lookup_id' differ in signedness [-Wpointer-sign] In file included from jansson.c:10:0: ./internal.h:95:5: note: expected 'uint32_t *' but argument is of type 'int *' jansson.c:195:18: warning: unused variable 'set_cur' [-Wunused-variable] mxml.c: In function 'nft_mxml_expr_parse': mxml.c:97:6: warning: pointer targets in passing argument 3 of 'nft_set_lookup_id' differ in signedness [-Wpointer-sign] In file included from mxml.c:12:0: internal.h:95:5: note: expected 'uint32_t *' but argument is of type 'int *' mxml.c:68:18: warning: unused variable 'set_cur' [-Wunused-variable] Spotted with: gcc (Debian 4.7.2-5) 4.7.2 Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: internal set id allocation from nft_ruleset_parse*()Alvaro Neira2014-10-091-2/+9
| | | | | | | | | Extends this function to attach the set to the rule through the set_idi. If it doesn't exist in the list, maybe the set already exists in the kernel. In that case, we don't set any id. Signed-off-by: Alvaro Neira Ayuso <alvaroneay@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: set: Do not print unset values in jsonAna Rey2014-06-111-10/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It changes the parse and the snprint functions to omit unset values. This json file is gotten for a set: { "set": { "name": "mi6set3", "table": "test6", "flags": "0", "family": "unknown", "key_type": "0", "key_len": "0", "set_elem": [ { "flags": "0", "key": { "data_reg": { "type": "value", "len": "16", "data0": "0x000080fe", "data1": "0x00000000", "data2": "0xffb30202", "data3": "0x89001efe" Now, This json file is gotten for a set without unset elements. { "set": { "name": "mi6set3", "table": "test6", "family": "unknown", "set_elem": [ { "key": { "data_reg": { "type": "value", "len": "16", "data0": "0x000080fe", "data1": "0x00000000", "data2": "0xffb30202", "data3": "0x89001efe" [ Note: These fields are unset when they are obtained from the set element information --pablo. ] Signed-off-by: Ana Rey <anarey@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* xml, json: Delete a cmpdata label in xml and json fileAna Rey2014-04-141-6/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It delete the cmpdata label in the structure of json and xml file. Example of xmlfile: The old structure of xml file: [...] <expr type="cmp"> <sreg>1</sreg> <op>eq</op> <cmpdata> <data_reg type="value"> <len>4</len> <data0>0x0100a8c0</data0> </data_reg> </cmpdata> </expr> The new structure of json file: [...] <expr type="cmp"> <sreg>1</sreg> <op>eq</op> <data_reg type="value"> <len>4</len> <data0>0x0100a8c0</data0> </data_reg> </expr> [...] To generate the new testfiles, It use the option -u of nft-parsing-test script. Signed-off-by: Ana Rey <anarey@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* rename library to libnftnllibnftnl-1.0.0Pablo Neira Ayuso2014-01-201-2/+2
| | | | | | We plan to use this library name for the higher layer library. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* data_reg: fix verdict format approachArturo Borrero2014-01-181-21/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patrick reports that the XML/JSON formats of the data_reg object are not accuarate. This patch updates these formats, so they are now as follow: * <data_reg type=value> with raw data (this doesn't change). * <data_reg type=verdict> with a concrete verdict (eg drop accept) and an optional <chain>, with destination. In XML: <data_reg type="verdict"> <verdict>goto</verdict> <chain>output</chain> </data_reg> In JSON: "data_reg" : { "type" : "verdict", "verdict" : "goto" "chain" : "output", } The default output format is updated to reflect these changes (minor collateral thing). When parsing set_elems, to know if we need to add the NFT_SET_ELEM_ATTR_CHAIN flag, a basic check for the chain not being NULL is done, instead of evaluating if the result of the parsing was DATA_CHAIN. The DATA_CHAIN symbol is no longer used in the data_reg XML/JSON parsing zone. While at it, I updated the error reporting stuff regarding data_reg/verdict, in order to leave a consistent state in the library. A JSON testfile is updated as well. Reported-by: Patrick McHardy <kaber@trash.net> Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: add interface to parse from fileArturo Borrero2014-01-091-0/+3
| | | | | | | | 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: rework and generalize the build/parse systemArturo Borrero2014-01-091-5/+14
| | | | | | | | | | | The intention behind this patch is to prepare the introduction of the new API that will allow us to parse files that contain the rule-sets expressed in XML/JSON format. This adds the NFT_PARSE_BUFFER that indicates that the input is provided in a buffer, which is what we currently support. Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* set_elem: add json parsing to APIArturo Borrero2014-01-081-2/+2
| | | | | | | | | Add missing support in the API function to parse a JSON set_elem. I've renamed the main JSON parsing function to prevent clashing. 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 Ayuso2014-01-061-26/+57
| | | | | | | | | | | | | | 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>
* src: rename the parameter tag to node_name in jansson functionÁlvaro Neira Ayuso2014-01-031-16/+18
| | | | | | | | I have changed this parameter for having consistence with the xml helper function. This patch is a cleanup. Signed-off-by: Alvaro Neira Ayuso <alvaroneay@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* set: Add json parser supportÁlvaro Neira Ayuso2013-08-281-0/+37
| | | | | | | Add function for parsing set in format JSON. Signed-off-by: Alvaro Neira Ayuso <alvaroneay@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: json: s/nft_jansson_value_parse_reg/nft_jansson_parse_reg/gPablo Neira Ayuso2013-08-241-2/+1
| | | | | | | | This patch is a cleanup to save LOC. I have also changed it to use < 0 to check for error conditions. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: json: s/nft_jansson_value_parse_val/nft_jansson_parse_val/gPablo Neira Ayuso2013-08-241-3/+2
| | | | | | | | This patch is a cleanup to save LOC. I have also changed it to use < 0 to check for error conditions. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: json: s/nft_jansson_value_parse_str/nft_jansson_parse_str/gPablo Neira Ayuso2013-08-241-5/+5
| | | | | | Remove _value_ infix to make the function name smaller. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: constify nft_*_parse input dataArturo Borrero Gonzalez2013-08-221-1/+1
| | | | | | | Since the input string is not changing, let's make it constant. Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* rule: Add json parser supportÁlvaro Neira Ayuso2013-08-201-0/+91
| | | | | | | Add function for parsing rules in JSON format Signed-off-by: Alvaro Neira Ayuso <alvaroneay@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* json: fixed some leaks in the json parsing functionÁlvaro Neira Ayuso2013-08-171-4/+17
| | | | | | | | | This patch fixes some leaks in the json parsing function. After this patch, we use nft_jansson_free_root. This function uses json_decref and it decrements the reference count and it releases the node if needed. Signed-off-by: Alvaro Neira Ayuso <alvaroneay@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* jansson: Add nft_jansson_family functionÁlvaro Neira Ayuso2013-08-091-0/+18
| | | | | | | Refactor some existing code with the new function nft_jansson_family. Signed-off-by: Alvaro Neira Ayuso Ayuso <alvaroneay@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* jansson: Add helper function for building the tree and use itÁlvaro Neira Ayuso2013-07-311-0/+19
| | | | | | | | Add a helper function that parses and returns the jansson tree, use it in the table parser. Signed-off-by: Alvaro Neira Ayuso <alvaroneay@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* table: json: fix returned errno value while parsingPablo Neira Ayuso2013-07-251-11/+6
| | | | | | | Instead of returning ERANGE all the time, let functions set errno accordingly and set EINVAL otherwise. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* table: Add json parser supportÁlvaro Neira Ayuso2013-07-251-0/+79
Add function for parsing tables in format JSON Signed-off-by: Alvaro Neira Ayuso <alvaroneay@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>