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* conntrackd: detect where the events comes fromPablo Neira Ayuso2009-05-236-29/+136
| | | | | | | | | | Since Linux kernel 2.6.29, ctnetlink reports the changes that have been done using ctnetlink. With this patch, conntrackd can recognize who is the origin of the event messages. For example, this is interesting to avoid a messy implicit bulk send during the commit of entries. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* conntrackd: add child process infrastructurePablo Neira Ayuso2009-05-234-6/+66
| | | | | | | | | | | | | This patch adds a simple infrastructure that allows to account the child processes that have been forked. This also includes a callback handler that can be registered that is called once the child process finishes. We can extended this later to include an alarm to limit the maximum lifetime of a forked child process. This is good to ensure that child processes behave timely. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* build: use uint16_t instead of uint32_t for uint16_t attributesSamuel Gauthier2009-05-121-1/+1
| | | | | Signed-off-by: Samuel Gauthier <samuel.gauthier@6wind.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* sync: add support for DCCP state replicationPablo Neira Ayuso2009-04-242-0/+25
| | | | | | This patch adds initial support for DCCP state replication. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* sync: add support for SCTP state replicationPablo Neira Ayuso2009-04-182-2/+30
| | | | | | This patch adds initial support for SCTP state replication. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* conntrack: add GRE supportPablo Neira Ayuso2009-04-182-1/+2
| | | | | | | This patch adds GRE support for the command line tool conntrack. With this patch, we support all protocols available in the kernel. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.
* conntrack: fix English typo in output messagePablo Neira Ayuso2009-04-141-9/+9
| | | | | | This patch fixes an English typo in an output message. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* conntrackd: change scheduler and priority via configuration filePablo Neira Ayuso2009-04-143-1/+51
| | | | | | | | With this patch, you can change the scheduler policy and priority for conntrackd. Using a RT scheduler policy reduces the chances to hit ENOBUFS in Netlink. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* conntrack: add DCCP supportPablo Neira Ayuso2009-04-112-1/+2
| | | | | | This patch adds DCCP support for the command line tool conntrack. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* conntrack: add SCTP supportPablo Neira Ayuso2009-04-112-1/+2
| | | | | | This patch adds SCTP support to the command line tool conntrack. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* conntrack: add UDPlite supportPablo Neira Ayuso2009-04-112-1/+2
| | | | | | This patch adds UDPlite support for the command line tool conntrack. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* conntrack: fix coupled-options sanity checkingsPablo Neira Ayuso2009-04-111-18/+59
| | | | | | | | | | | | This patch extends the generic_opt_check() function to add extra information on the possible option combinations. Under some specific situations, like the creation and getting of a conntrack, you may specify the original or the reply tuple but at least one MUST be present. This handling has been always tricky, it still remains but we're more user friendly at least. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* config: cleanup error reporting during config file parsingPablo Neira Ayuso2009-03-311-111/+143
| | | | | | This patch cleans up the error reporting. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* conntrack: remove broken command checking codePablo Neira Ayuso2009-03-311-22/+6
| | | | | | | | | This patch removes the broken command checking. This is better handled by the option checkings which comes just after this one. This patch also fixes some inconsistencies in the command parameter checking when long names are used. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* conntrack: add `-S' command to display kernel statisticsPablo Neira Ayuso2009-03-311-4/+83
| | | | | | | | | This patch adds `-S' command to display kernel statistics. Using raw `cat' on /proc and the hexadecimal output is not very handy. This option parses the /proc entry and display the information is a more human friendly way. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* conntrack: fix missing bits in `-C' commandPablo Neira Ayuso2009-03-311-1/+4
| | | | | | | | This patch fixes some missing bits for the `-C' conntrack command like the manpage information, the usage help, the `--counters' synonymous and the commands vs. options checking. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* sync-mode: fix broken dedicated-link change in multichannel layerPablo Neira Ayuso2009-03-202-12/+11
| | | | | | | This patch fixes a problem that was introduced while adding the multichannel support. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* config: obsolete `ListenTo' clausePablo Neira Ayuso2009-03-201-24/+2
| | | | | | | This patch obsoletes the `ListenTo' clause which is a reminiscent of the intial event filtering code. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* mcast: remove several unused structure fieldsPablo Neira Ayuso2009-03-202-20/+1
| | | | | | This patch removes several structure fields that are unused. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* udp: fix missing scope_id in the socket creationPablo Neira Ayuso2009-03-202-4/+14
| | | | | | | | | This patch fixes an EINVAL error returned by bind() when opening an UDP server socket to propagate state-changes over the dedicated link. This patch also includes the change of the example configuration files in case that you want to use UDP over IPv6. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* parse: fix broken destination port address translationPablo Neira Ayuso2009-03-191-1/+1
| | | | | | | | This patch fixes a bug in the message parser which leads to treat a destination PAT as a source PAT. Reported-by: Habib Sahnoun <sahnounhab@yahoo.fr> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* sync-mode: change `multicast' by `link' for `-s' optionPablo Neira Ayuso2009-03-172-3/+10
| | | | | | | | | This patch obsoletes `-s multicast' by `-s link' to display the dedicated link statistics, as the current dedicated link protocol use can be unicast UDP or multicast. The term "link" is more generic. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* mcast: mcast_send() takes a const pointer to bufferPablo Neira Ayuso2009-03-171-1/+1
| | | | | | | This patch removes a compilation warning. The buffer passed to be sent must be const. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* sync-mode: cleanup reminiscent of multicast dependencyPablo Neira Ayuso2009-03-171-2/+2
| | | | | | | | | This patch is a cleanup, it removes a couple of reminiscent references to multicast (as now conntrackd is independent of the protocol used to replicate state-changes, currently supports unicast UDP and multicast). Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* sync-mode: save one tab inside switch, cleanupPablo Neira Ayuso2009-03-131-14/+14
| | | | | | This patch saves one tab in the code. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* sync-mode: fix wrong output stats refering lost/malformed packetsPablo Neira Ayuso2009-03-131-3/+3
| | | | | | | | This patch fixes a misleading output that shows the number of lost and malformed packets. Instead, those numbers show the number of the number of lost and malformed messages. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* sync-mode: add unicast UDP support to propagate state-changesPablo Neira Ayuso2009-03-136-19/+551
| | | | | | | | This patch adds support for unicast UDP to the channel infrastructure. With this patch, you can select UDP unicast to propagate state-changes instead of multicast. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* sync-mode: rename mcast_track_*() by nethdr_track_*()Pablo Neira Ayuso2009-03-124-9/+9
| | | | | | | | This patch is a cleanup. It renames the mcast_track_*() functions by nethdr_track_*() because this functions are related to message sequence tracking. They are not stick to multicast at all. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* sync-mode: add abstract layer to make daemon independent of multicastPablo Neira Ayuso2009-03-1211-317/+490
| | | | | | | | | This patch reworks conntrackd to make it independent of the protocol used to propagate state-changes. This patch adds the channel layer abstraction, this layer allows you to add support for different protocols like unicast UDP or TIPC. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* sync-mode: rename mcast_iface structure to interfacePablo Neira Ayuso2009-03-091-13/+13
| | | | | | | | | This patch renames the mcast_iface to interface since this nlif handler is not related with multicast itself, but to monitor the link interface used to propagate state-changes. This patch is a cleanup. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* sync-mode: rename mcast_send_sync() to sync_send()Pablo Neira Ayuso2009-03-091-7/+7
| | | | | | | | This patch is a cleanup. It renames the function mcast_send_sync() to sync_send() since the function itself is not related to multicast anymore (it enqueues state-changes to the upper layer). Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: fix compilation issue in gentoo due to missing include limits.hPablo Neira Ayuso2009-02-212-0/+2
| | | | | | | | | This patch adds include limits.h to mcast.c and sync-mode.c. Why Gentoo maintainers did not report me the problem? :( http://bugs.gentoo.org/show_bug.cgi?id=256497 Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* netlink: use u8 getter for TCP statesPablo Neira Ayuso2009-02-211-1/+1
| | | | | | | | This patch replace nfct_get_attr_u32 by nfct_get_attr_u8 which is the correct size of a TCP state. Set also the CLOSE_INIT flag for CLOSE TCP state (as nf_conntrack_proto_tcp allows). Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* config: add NetlinkBufferSize and NetlinkBufferSizeMaxGrowthPablo Neira Ayuso2009-02-211-3/+5
| | | | | | | | This patch adds two alias that removes an inconsistency in the configuration file names. Now, the clauses that refers to Netlink starts by the prefix "Netlink". Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* mcast: fix compilation warning due missing headerPablo Neira Ayuso2009-02-211-0/+1
| | | | | | | This patch includes libnfnetlink.h header in mcast.c to remove a compilation warning due to missing prototype declaration. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: remove obsolete debug() and debug_ct() callsPablo Neira Ayuso2009-02-209-52/+8
| | | | | | | This patch removes debug() and debug_ct(), I haven't use the debugging information that these functions provide in years. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* sync-mode: change current link if message is correctPablo Neira Ayuso2009-02-201-3/+10
| | | | | | | This patch makes conntrackd change the current dedicated link if the message is correct, ie. neither malformed nor out-of-sync. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* headers: don't use NFCT_DIR_MAX in statistics structurePablo Neira Ayuso2009-02-201-8/+7
| | | | | | | | | This patch removes the use of NFCT_DIR_MAX. This constant is part of the old libnetfilter_conntrack API which has been removed from the git tree. It was introduced in the early days of conntrackd, thus, the use of this constant. Unfortunately, I did not notice until now. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* conntrackd: don't initialize logging for client requestPablo Neira Ayuso2009-02-151-6/+6
| | | | | | | This patch removes the logging initialization for client requests which is of any use for them. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* conntrackd: display help information with `-h'Pablo Neira Ayuso2009-02-151-1/+5
| | | | | | This patch also adds missing `-v' information to the manpage. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* conntrackd: add `-f internal' and `-f external' optionsPablo Neira Ayuso2009-02-153-2/+32
| | | | | | | | This patch allows flushing the internal and/or the external cache. The `-f' with no extra parameters still works to flush both the internal and the external cache. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* stats-mode: fix polling based loggingPablo Neira Ayuso2009-02-141-0/+1
| | | | | | This patch fixes statistics logging based on polling. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: use resync handler for polling instead of dump handlerPablo Neira Ayuso2009-02-142-33/+34
| | | | | | | | This patch moves the polling logic into the resync handler. The dump handler action depended on the daemon working mode (polling or event-driven) resulting in an inconsistent behaviour. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* cache_iterators: fix wrong printf format in commit-time messagePablo Neira Ayuso2009-02-131-1/+1
| | | | | | | This patch uses the appropriate printf format to display the commit time taken (it was using %llu instead of %lu). Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: add Nice clause to set the nice valuePablo Neira Ayuso2009-02-083-2/+13
| | | | Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* sync-mode: flush also internal cache after reset PurgeTimeoutPablo Neira Ayuso2009-02-081-0/+1
| | | | | | | | | | Currently, the daemon sends a flush request to the kernel-space. With lots of entries and NetlinkOverrunResync disabled, the daemon remains in an inconsistent state due to an overrun produced by the flush report to userspace. With this patch, the daemon also flush its internal cache after the kernel flush request. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* netlink: add new option NetlinkOverrunResyncPablo Neira Ayuso2009-02-083-5/+27
| | | | | | | | This patch adds NetlinkOverrunResync. This option can be used to set the amount of time after which the daemon resynchronizes itself with the kernel state-table if it detects a Netlink overrun. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: re-work polling strategyPablo Neira Ayuso2009-02-063-40/+79
| | | | | | | | This patch improves the polling support included in 0.9.10. The polling now consists of getting the state table, wait for PollSecs, then purge obsolete entries, and so on. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* netlink: refactorize several nl_init_*_handler() functionsPablo Neira Ayuso2009-02-052-39/+5
| | | | | | | | | | This patch removes: * nl_init_dump_handler() * nl_init_request_handler() * nl_init_resync_handler() since they all look very similar. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* netlink: set IP_CT_TCP_FLAG_CLOSE_INIT for TIME_WAIT statesPablo Neira Ayuso2009-01-251-0/+13
| | | | | | | | | This patch sets IP_CT_TCP_FLAG_CLOSE_INIT if the entry is in TCP TIME_WAIT state. This patch is a workaround, the daemon should propagate the internal TCP flags to make it fully independent of possible changes in the TCP tracking code. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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