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* JSON: Support latest enhancements of fwd statementPhil Sutter2018-06-111-2/+11
| | | | | | | | | | | | | JSON equivalent of fwd statement was too primitive to support the added address and family parameters, so make its value an object and accept the device expression as value of a "dev" property in there. Then add optional "addr" and "family" properties to it. While being at it, add a testcase to make sure the extended syntax works right. Signed-off-by: Phil Sutter <phil@nwl.cc> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* JSON: Add support for connlimit statementPhil Sutter2018-06-111-0/+10
| | | | | Signed-off-by: Phil Sutter <phil@nwl.cc> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* JSON: Add support for socket expressionPhil Sutter2018-06-111-0/+6
| | | | | Signed-off-by: Phil Sutter <phil@nwl.cc> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* JSON: Don't print burst if equal to 5Phil Sutter2018-06-111-1/+1
| | | | | | | | Analogous to commit 3dddef928d80d ("statement: don't print burst if equals 5"), don't print the default burst value. Signed-off-by: Phil Sutter <phil@nwl.cc> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* JSON: Call verdict maps 'vmap' in JSON as wellPhil Sutter2018-06-111-1/+7
| | | | | | | This way JSON format is more consistent with the standard one. Signed-off-by: Phil Sutter <phil@nwl.cc> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* expr: extend fwd statement to support address and familyPablo Neira Ayuso2018-06-061-1/+1
| | | | | | | | Allow to forward packets through to explicit destination and interface. nft add rule netdev x y fwd ip to 192.168.2.200 device eth0 Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* JSON: Review large number parsing/printingPhil Sutter2018-06-031-11/+15
| | | | | | | | | When parsing large (uint64_t) values, capital 'I' has to be used in format string. While being at it, make sure JSON output code handles those variables correctly, too. Signed-off-by: Phil Sutter <phil@nwl.cc> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* JSON: Fix parsing and printing of limit objectsPhil Sutter2018-06-011-22/+21
| | | | | | | | Fix parsing and printing of named limit objects by aligning the code with parser/printer of anonymous ones. Signed-off-by: Phil Sutter <phil@nwl.cc> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* JSON: Review set elem expressionsPhil Sutter2018-06-011-3/+3
| | | | | | | | | | | | * There is no need to prefix element-specific properties with 'elem_', they can't conflict. * In json_parse_set_stmt(), searching for above properties is pointless since that's already done by called function. * Fix potential NULL-pointer deref in json_parse_set_elem_expr_stmt(): json_parse_flagged_expr() may return NULL. Signed-off-by: Phil Sutter <phil@nwl.cc> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* JSON: Review meter statement supportPhil Sutter2018-06-011-2/+3
| | | | | | | | | Meter name being optional seems to come from old flow statement, so don't support this. Also add size support as was recently added to standard syntax. Signed-off-by: Phil Sutter <phil@nwl.cc> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* JSON: Sort out rule position and handles in generalPhil Sutter2018-06-011-24/+13
| | | | | | | | | | | | | | | | | | | | | | | | First of all, don't print the position property when listing rules. This was there only because libnftnl JSON output has it too, but since the preferred way to *add* a rule at some location is via 'handle' keyword, keeping "position" in output would be non-intuitive. Changing "position" property name to "handle" instead is also a no-go since that would clash with the real rule handle. Secondly, turn all handle output on regardless of octx->handle setting. For a programmatic API like JSON, this should be fine. Thirdly, fix rule locations when parsing JSON: Respect "handle" property for CMD_INSERT and CMD_ADD and ignore "pos" at all (actually even a typo, should have read "position"). Also support "index" property recently added to standard syntax. Finally, adjust nft-test.py for the above changes: There is no "position" property to drop from rule output, and "handle" property will always be present. Signed-off-by: Phil Sutter <phil@nwl.cc> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* JSON: Use "type" for CT helper objectPhil Sutter2018-06-011-1/+1
| | | | | | | Property name "helper" was a bit unclear, "type" is better. Signed-off-by: Phil Sutter <phil@nwl.cc> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* libnftables: Implement JSON output supportPhil Sutter2018-05-111-0/+1564
Although technically there already is support for JSON output via 'nft export json' command, it is hardly useable since it exports all the gory details of nftables VM. Also, libnftables has no control over what is exported since the content comes directly from libnftnl. Instead, implement JSON format support for regular 'nft list' commands. Signed-off-by: Phil Sutter <phil@nwl.cc> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>