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* src: remove libmxml supportArturo Borrero2016-09-231-42/+0
| | | | | | | | | | | | | | | | | | | This patch removes the libmxml integration in libnftnl, since we have JSON in place and there is no need to support two at the same time. The JSON support is much better, for example libjansson has a better parsing error reporting. Moreover, libmxml 2.10 breaks the integration with libnftnl somehow, as reported in Debian bug #83870 [0]. Also, the XML support inside libnftnl has never been in good shape, with several tiny inconsitencies. [0] https://bugs.debian.org/838370 Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: Implement rule comparisonCarlos Falgueras García2016-08-171-0/+22
| | | | | | | | | | | | | | | | | | | | 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>
* libnftnl: constify object arguments to various functionsPatrick McHardy2016-05-091-4/+4
| | | | | | | | | 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 nftnl_rule_expr to nftnl_exprPablo Neira Ayuso2015-09-071-29/+29
| | | | | | | 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 Ayuso2015-09-071-101/+101
| | | | | | | | | 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: restore static array with expression operationsPablo Neira Ayuso2015-03-231-5/+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>
* 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>
* src: consolidate XML/JSON exportationPablo Neira Ayuso2014-11-101-95/+17
| | | | | | | | | | | | | | 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>
* src: stricter netlink attribute length validationPablo Neira Ayuso2014-07-201-8/+4
| | | | | | | | | | | | If the kernel sends us different data length for a given attribute, stop further processing and indicate that an ABI breakage has ocurred. This is an example of the (hypothetical) message that is shown in that case: nf_tables kernel ABI is broken, contact your vendor. table.c:214 reason: Numerical result out of range Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* expr: bitwise: Do not print unset values in jsonAna Rey2014-06-231-39/+48
| | | | | | | It changes the parse and the snprint functions to omit unset values. Signed-off-by: Ana Rey <anarey@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* expr: bitwise: Do not print unset values in xmlAna Rey2014-06-231-47/+49
| | | | | | | | | It changes the parse and the snprint functions to omit unset values. Now, This part of a xml file is gotten without unset elements. Signed-off-by: Ana Rey <anarey@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* expr: bitwise: Get a nft_rule_expr type in nft_rule_expr_bitwise_snprintf_* ↵Ana Rey2014-06-231-15/+12
| | | | | | | | | | functions Code refactoring in nft_rule_expr_bitwise_snprintf_* functions to get a nft_rule_expr type instead of nft_expr_bitwise type. 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>
* mxml: add optional/mandatory flag to nft_mxml_reg_parseArturo Borrero2014-01-151-5/+5
| | | | | | | | | | | | | | | There are some cases where a reg is not mandatory, for example: * dreg in lookup * dreg/sreg in meta (last version) So, lets change the function nft_mxml_reg_parse() to add an optional/mandatory flag. dreg in lookup is optional as stated at: net/netfilter/nft_lookup.c:nft_lookup_init() 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 Ayuso2014-01-061-12/+14
| | | | | | | | | | | | | | 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: unify parse and output typesÁlvaro Neira Ayuso2013-11-141-9/+9
| | | | | | | | | Unify parse and output types that are redundant to all existing nftables objects. Thus, all NFT_*_O_[XML|JSON|DEFAULT] are merged into NFT_OUTPUT_[JSON|XML] and NFT_PARSE_[JSON|XML]. Signed-off-by: Alvaro Neira Ayuso <alvaroneay@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: json: remove spacesÁlvaro Neira Ayuso2013-10-171-5/+5
| | | | | | | | | | | | Remove all the spaces from the JSON output to reduce the size of the output string, this also provides a consistent output in table, chain, rule and set. As Stephen Hemminger suggested, better to squash the output to consume as less bytes as possible. Signed-off-by: Alvaro Neira Ayuso <alvaroneay@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: replace size_t by uint32_t in set/get interfacesPablo Neira Ayuso2013-09-191-2/+2
| | | | | | | | | | | | 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>
* src: xml: add parsing optional/mandatory flagArturo Borrero Gonzalez2013-09-161-4/+6
| | | | | | | | | | | Add an optional/mandatory flag to XML parsing. In some elements (ie regs), no flag is used because is always mandatory. DATA_NONE is created to indicate a non-parsed data_reg. Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@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/+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_val/nft_jansson_parse_val/gPablo Neira Ayuso2013-08-241-1/+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>
* rule: Add json parser supportÁlvaro Neira Ayuso2013-08-201-0/+45
| | | | | | | 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: bitwise: add missing node lenÁlvaro Neira Ayuso2013-08-091-2/+3
| | | | | | | I have added the len node in bitwise which was missing Signed-off-by: Alvaro Neira Ayuso Ayuso <alvaroneay@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: expr: missing curly braces in json output supportÁlvaro Neira Ayuso2013-08-091-3/+3
| | | | | | | Added missing curly braces in json output support. Signed-off-by: Alvaro Neira Ayuso Ayuso <alvaroneay@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: xml: consolidate common XML code via nft_mxml_num_parseArturo Borrero2013-07-251-0/+6
| | | | | | | | | | | This patch moves common XML parsing code to nft_mxml_num_parse(). To handle this, the nft_strtoi() helper fuction is included. I've changed some MXML_DESCEND[_FIRST] flags to avoid match a nested node under some circumstances, ie, matching two nodes with the same name that are descendant. Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: simplify getter logicPablo Neira Ayuso2013-07-181-27/+10
| | | | | | | | 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_expr_data to replace explicit casting to obtain expression dataPablo Neira Ayuso2013-07-131-6/+6
| | | | Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* expr: use __attribute__((constructor)) to register expressionPablo Neira Ayuso2013-07-131-0/+5
| | | | | | Instead of manual array registration. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* bitwise: xml: export len nodeArturo Borrero2013-07-081-2/+3
| | | | | | | Fix missing length, it was not being exported in XML. Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@soleta.eu>
* src: xml: consolidate parsing of data_reg via nft_mxml_data_reg_parseArturo Borrero2013-07-061-30/+3
| | | | | | | | Move common code for XML parsing of data_reg to the new nft_mxml_data_reg_parse function. Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: improve default text outputGiuseppe Longo2013-07-051-6/+3
| | | | | | | | | | | | | This patch improves default plain text output by mimicing the default output of libnl-nft. While at it, several %lu has been translated to use %"PRIu64" for correctness. [ I have added the policy to string translation --pablo ] Signed-off-by: Giuseppe Longo <giuseppelng@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: consolidate XML parsing of expressions via nft_mxml_reg_parsePablo Neira Ayuso2013-07-041-24/+7
| | | | This patch reduces the XML code in 100 LOC.
* src: consolidate XML parsing of expressions via nft_mxml_expr_parsePablo Neira Ayuso2013-07-041-50/+12
| | | | | | | | | Move common code for XML parsing of expressions to the new nft_mxml_expr_parse function. This patch reduces the XML parsing code in 300 LOC. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: support JSON format in chain, rule and expressionsÁlvaro Neira Ayuso2013-06-291-2/+35
| | | | | | | While at it, order possible switch cases of _snprintf. Signed-off-by: Alvaro Neira Ayuso <alvaroneay@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* expr: xml: registers must be <= NFT_REG_MAXArturo Borrero Gonzalez2013-06-271-0/+10
| | | | | | | With this patch, all expressions validate that registers are <= NFT_REG_MAX. Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* bitwise: xml: mask and xor use same number of data registersArturo Borrero Gonzalez2013-06-271-0/+8
| | | | | | | The mask and xor must use the same number of data registers. Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* expr: bitwise: xml: fix wrong castingArturo Borrero2013-06-171-1/+1
| | | | | | | Introduced in (51370f0 src: add support for XML parsing) Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: constify first parameter of all nft_*_getPablo Neira Ayuso2013-06-171-1/+2
| | | | Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: add support for XML parsingArturo Borrero Gonzalez2013-05-231-0/+111
| | | | | | | | | | | | | | | | | | | This patch adds capabilities for parsing a XML table/chain/rule. Some comments: * The XML data is case sensitive (so <chain>asd</chain> != <chain>ASD</chain> != <CHAIN>asd</CHAIN>) * All exported functions receive XML and return an object (table|chain|rule). * To compile the lib with XML parsing support, run './configure --with-xml-parsing' * XML parsing is done with libmxml (http://minixml.org). XML parsing depends on this external lib, this dependency is optional at compile time. NOTE: expr/target and expr/match binary data are exported. [ Fixed to compile without --with-xml-parsing --pablo ] Signed-off-by: Arturo Borrero González <arturo.borrero.glez@gmail.com>
* src: remove trailing newlines, tabs and spaces from XML formatArturo Borrero Gonzalez2013-04-191-4/+4
| | | | | | | | Delete all \n and \t from XML output, any reasonable XML viewer already does the nifty formatting for us. Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* expr: basic support for printing nft_data_reg in XML formatArturo Borrero Gonzalez2013-04-191-22/+17
| | | | | | | | | | | | | | | | | | | | | | | | nft_data_reg now is printed in XML according to what it contains <data> nodes have been also renamed. Arturo Borrero Gonzalez says: ==================== cmp is using <cmpdata> <cmpdata> has <data_reg></data_reg> which can also be redundant. But all around the XML printing (including sets, an incoming patch) i've been nesting the data_reg into another XML node, so you could easily see (also the XML parser) the difference between (for example. in set) nft_set_elem->key and nft_set_elem->data. As I needed to nest in nft_set_elem I decided to follow a constant line and do nest all data_reg. ==================== Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: add XML output supportArturo Borrero Gonzalez2013-02-081-3/+55
| | | | | Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* expr: add type and flags to snprintf interfacePablo Neira Ayuso2013-01-151-1/+2
| | | | | | | Propagate the type and flags parameter to the expressions, so we can implement outputs in different formats. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* expr: add bitwisePablo Neira Ayuso2012-10-291-0/+235
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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