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2013-12-07examples: made sub functions the sameKen-ichirou MATSUZAWA
show entry in oneline and RTA_PRIORITY Signed-off-by: Ken-ichirou MATSUZAWA <chamas@h4.dion.ne.jp> Signed-off-by: Florian Westphal <fw@strlen.de>
2013-12-07examples: use mnl_nlmsg_get_payload()Ken-ichirou MATSUZAWA
not increment (nlmsghdr) pointer Signed-off-by: Ken-ichirou MATSUZAWA <chamas@h4.dion.ne.jp> Signed-off-by: Florian Westphal <fw@strlen.de>
2013-12-07examples: fix trivial error messageKen-ichirou MATSUZAWA
Signed-off-by: Ken-ichirou MATSUZAWA <chamas@h4.dion.ne.jp> Signed-off-by: Florian Westphal <fw@strlen.de>
2013-12-07examples: set attr tableKen-ichirou MATSUZAWA
Florian adviced rtnl-route-event.c has same problem Signed-off-by: Ken-ichirou MATSUZAWA <chamas@h4.dion.ne.jp> Signed-off-by: Florian Westphal <fw@strlen.de>
2013-07-05examples: netfilter: add nfct daemon skeleton codePablo Neira Ayuso
This patch adds the skeleton code for a daemon that collects statistics via ctnetlink. Consider it a simplified version of ulogd2. It also contains some documentation on several interesting tweaks. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-05-31examples: netfilter: add nfct-dumpPablo Neira Ayuso
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-05-28examples: add rtnl-addr-dumpPablo Neira Ayuso
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-05-27examples: rtnl-link-dump: display HW addressPablo Neira Ayuso
2013-05-02examples: rtnl-route-dump: display also metric/priorityPablo Neira Ayuso
If present in the route message, otherwise simply skip it. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-05-02examples: rtnl-route-add: fix typo in IPv6 supportPablo Neira Ayuso
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-04-24examples: rtnl-route-event: update Makefile.amPablo Neira Ayuso
So you can compile rtnl-route-event via `make check' Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-04-24examples: rtnl-route-event: add example to listen to IPv4/IPv6 routesPablo Neira Ayuso
Derived from rtnl-route-dump.c Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-04-24examples: rtnl-route-add improvements (including IPv6 support)Pablo Neira Ayuso
Now, both IPv4 and IPv6 are supported simultaneously in one single file. While at it: * I moved the declarations to the beginning of the main function. * Renamed mask by prefix, which seems more appropriate to me. * Use RTPROTO_STATIC, as the route has been added by the administrator. * Set NLM_F_ACK, so we get a report from the kernel about our query and treat reply from the kernel. * Stricter argc checking. * Use perror instead of printf for error reporting. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-03-26examples: add kobject-eventPablo Neira Ayuso
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-03-19examples: add genl-group-eventsPablo Neira Ayuso
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-08-09examples: rtnl-route-dump: add IPv6 supportPhilip Prindeville
[ Pablo has modified the original patch modified to fix some compilation warnings with gcc-4.7 and select the protocol family as argument from the command line. ] Signed-off-by: Philip Prindeville <philipp@redfish-solutions.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-01-02example: release them in the public domainPablo Neira Ayuso
I have decided to release the examples in this library in the public domain. Jan Engelhardt, who has been the sole contributor so far, has agreed with this re-licensing by communication via e-mail. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2011-01-08examples/genl: support dumping the genl familiesJan Engelhardt
The usage text already specified [family] as optional, now implement it :-) Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2011-01-08examples/genl: fix newline imbalanceJan Engelhardt
Running `genl-family-get VFS_DQUOT` forgets to print a newline. Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-12-17examples: fix wrong group mask number in nfct-eventPablo Neira Ayuso
This patch replaces event group numbers NFNLGRP_CONNTRACK_* by the event group mask NF_NETLINK_CONNTRACK_* Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2010-12-17nlmsg: add new message batching infrastructurePablo Neira Ayuso
This patch adds the new message batching infrastructure that allows to store several messages into one single datagram. This patch includes an example for ctnetlink. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2010-11-16Update .gitignoreJan Engelhardt
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-11-07nlmsg: rework mnl_nlmsg_fprintfPablo Neira Ayuso
This patch reworks mnl_nlmsg_fprintf. It breaks backward compatibility of this function, there was no way to improve it without doing so (and we are still in time to break thing, BTW). Signed-off-bu: Pablo Neira Ayuso <pablo@netfilter.org>
2010-11-07examples: add nflog examplePablo Neira Ayuso
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2010-10-30examples: remove redundant castsJan Engelhardt
2010-10-25attr: rename str_null from NULL awayJan Engelhardt
A small little pedantism: NULL (as in, the pointer) isn't NUL (as in, the character with value zero, '\0'). I propose to rename it to strz, for the zero-terminated string (sometimes referred to as ASCIZ string, but of course C isn't tied to ASCII). Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2010-10-22src: avoid using deprecated unspecified argument listsJan Engelhardt
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-10-21src: define MNL_SOCKET_BUFFER_SIZE to 8192ULPablo Neira Ayuso
Davem spotted during the Netfilter Workshop that user-space applications should use 8KB buffers for recv(). I accidentally found that NFLOG is not following this approach (in this case we're using 131072 bytes messages), we have to document this. Anyway, according to linux/netlink.h (and to complete this log message): "skb should fit one page. This choice is good for headerless malloc. But we should limit to 8K so that userspace does not have to use enormous buffer sizes on recvmsg() calls just to avoid MSG_TRUNC when PAGE_SIZE is very large." Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2010-10-19Add .gitignore filesJan Engelhardt
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-10-19build: remove unneeded -dynamic -ldl -nostartfiles flagsJan Engelhardt
Besides that -ldl should be in _LDADD (not _LDFLAGS), I do not see any dlopen calls at all that would make the library a requirement. I also see no reason to use -Wc,-nostartfiles. Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-09-08examples: put examples files into specific directoriesPablo Neira Ayuso
put examples files into specific directories according to the Netlink bus they work with. And minor update in the readme file Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2010-07-10examples: fix byte-order in nfct-eventPablo Neira Ayuso
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2010-07-10examples: fix rtnl-set-linkPablo Neira Ayuso
This patch fixes the example that allows to set up/down the network interface. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2010-05-09add nfct-event examplePablo Neira Ayuso
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2010-05-09fix rtnl-link-dump3.cPablo Neira Ayuso
commit a5f25889216411ad7492047fafe6de03b8408440 introduced a minor problem in this example. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2010-05-09relax mnl_attr_type_valid() checkings and change errno valuePablo Neira Ayuso
This patch relaxes strict attribute checkings in the example files. I have also changed the errno value, now it's EOPNOTSUPP instead of EINVAL. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2010-05-04statify function in nf-queue.c examplePablo Neira Ayuso
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2010-05-03add nf-queue.c example file for nfnetlink_queuePablo Neira Ayuso
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2010-05-03add licensing terms of example filesPablo Neira Ayuso
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2010-04-23add rtnl-route-add.c to examplesPablo Neira Ayuso
Heavily based on an example from Alejandro Castaño. Untested. Signed-off-by: Alejandro Castaño <alecastanyo@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2010-04-22fix lots of compilation warnings in example filesPablo Neira Ayuso
They have been spotted by -Wall -Wextra Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2010-04-19add mnl_nlmsg_fprintf() function for debugging purposesPablo Neira Ayuso
This function is still quite preliminary, comments welcome! Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2010-04-12remove mnl_nlmsg_get_len() functionPablo Neira Ayuso
Remove mnl_nlmsg_get_len() since it returns a field of a structure that is public (struct nlmsghdr). We can directly access the header fields and they are not likely to change in the future (at least for this version of Netlink I think). Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2010-04-05more consistency name issues: rename get_data*() to get_payload*()Pablo Neira Ayuso
This includes renaming get_tail() to get_payload_tail() Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2010-04-05rename mnl_attr_type_ok() by mnl_attr_type_valid() for consistencyPablo Neira Ayuso
better to rename this function since its return value is not similar to other _ok() functions, for consistency. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2010-04-04rename mnl_attr_type_invalid() by mnl_attr_type_ok()Pablo Neira Ayuso
And include the prototype in libmnl.h, since it was missing Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2010-04-04check source of the netlink message and fix sequence tracking logicPablo Neira Ayuso
This patch changes the callback handlers to include netlink portID checking. Thus, we avoid that any malicious process can spoof messages. If portid, sequence number of the message is != 0, we check if the message is what we expect. This allows to use the same netlink channel for dumps (portid, seq != 0) and event-based notifications (portid, seq == 0). Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2010-04-03add validation infrastructure and rework attribute parsingPablo Neira Ayuso
This patch includes the new validation infrastructure which is decoupled from the attribute parsing. It is composed of: - mnl_attr_type_invalid: that allows to check if the attribute type is valid (ie. the type is not higher than WXYZ_MAX). - mnl_attr_validate: that allows to validate that there's enough room for the attribute data. The patch includes the rework of the attribute parsers. Now, you don't have to use an array of pointer to store the result of the parsing, you can use whatever data structure instead. The prototype as it follows: typedef int (*mnl_attr_cb_t)(const struct nlattr *attr, void *data); extern int mnl_attr_parse(const struct nlmsghdr *nlh, int offset, mnl_attr_cb_t cb, void *data) There are three versions of rtnl-link-dump.c that show how attribute parsing can be done now. Probably that many examples are not good idea, I may remove some of them from the tree in the future. This patch also merges mnl_attr_parse_at_offset into mnl_attr_parse. This patch modifies MNL_ALIGN so that we can use it in static arrays (the use of mnl_align() is not allowed in compilation time to initialize an array field). I have added the mnl_attr_for_each() macro and I have changed mnl_attr_for_each_nested() to declare the length variable internally. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2010-04-03revert abcaad6b65ed368c13c353ed71619332f76d9c2aPablo Neira Ayuso
it's deeply broken 8-)
2010-04-03check portid of received messages in examplesPablo Neira Ayuso
netlink is not connection-oriented, we have to check the origin of the message. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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