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* conntrackd: remove warning for -SArturo Borrero Gonzalez2017-08-141-3/+0
| | | | | | | | | | Remove the warning message for the -S option which has been deprecated for years now. Users calling conntrackd with this switch activated will now get an error. Signed-off-by: Arturo Borrero Gonzalez <arturo@netfilter.org> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* conntrackd: make the daemon run in RT mode by defaultArturo Borrero Gonzalez2017-06-121-28/+0
| | | | | | | | | | | | | | | | | | | | | | | In order to prevent netlink buffer overrun, conntrackd is recommended to run at max priority. Make conntrackd to use a RT (SHED_RR) scheduler by default at max priority. This is common among other HA daemons. For example corosync uses SCHED_RR by default. The scheduler configuration option is kept in order to allow admins to perform fine-tuning, but it is deleted from example configuration files. Note that this default sched priority is so high that it makes the nice value useless, so deprecate the nice configuration. Anyway the nice value can be set externally at runtime using nice/renice. The code is moved to the init() routine. In case of error setting the scheduler, the system default will be used. Report a message to the user and continue working. Signed-off-by: Arturo Borrero Gonzalez <arturo@debian.org> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* conntrackd: cleanup if failed forkingArturo Borrero Gonzalez2017-06-061-0/+2
| | | | | | | Close the logs and lockfile if error while forking. Signed-off-by: Arturo Borrero Gonzalez <arturo@debian.org> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* conntrackd: evaluate configuration earlierArturo Borrero Gonzalez2017-06-061-11/+9
| | | | | | | | Run the evaluation step sooner in the conntrackd startup routine. Don't close log or unlink lockfile at this stage. Signed-off-by: Arturo Borrero Gonzalez <arturo@debian.org> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* conntrackd: request resync at startupArturo Borrero Gonzalez2017-05-151-0/+2
| | | | | | | | | If a node goes to live, ask the other for resync at startup. This has to be done usually by hand, but I guess is an operation common enough to add some bits to ease people life here. Signed-off-by: Arturo Borrero Gonzalez <arturo@debian.org> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* conntrackd: CommitTimeout breaks DisableExternalCache set OnPablo Neira Ayuso2017-03-101-0/+11
| | | | | | | | | | | This patch introduces a new evaluate() function that can be used to spot inconsistent configurations. Don't allow CommitTimeout with DisableExternalCache On since this results in EINVAL errors. CommitTimeout makes no sense with no external cache. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* conntrackd: replace fprintf calls with dlog()Arturo Borrero Gonzalez2016-11-091-36/+31
| | | | | | | | | | | | | Review fprintf() and perror() calls and replace them with proper logs, since it now supports being called anytime during runtime. While at it, several messages are fixed, deleting \n, adjusting coding style and some typos. Also, the 'conntrackd cannot start, please review your configuration' is printed before closing the log engine. Signed-off-by: Arturo Borrero Gonzalez <arturo@debian.org> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* log: print messages to stdout/sderr if running in console modeArturo Borrero Gonzalez2016-10-281-0/+1
| | | | | | | | | | | | | | | | | | | | | If conntrackd is running in console mode (i.e. in foreground) then we can print the log messages to stdout/stderr. This eases the workflow for admins, since we condensate more info into the same terminal output. Example: % sudo conntrackd -C /etc/conntrackd.conf WARNING: XXXX is an invalid interface [Thu Oct 27 13:57:09 2016] (pid=7581) [notice] disabling internal cache [Thu Oct 27 13:57:09 2016] (pid=7581) [notice] disabling external cache [Thu Oct 27 13:57:09 2016] (pid=7581) [ERROR] can't open channel socket: No such device [Thu Oct 27 13:57:09 2016] (pid=7581) [ERROR] initialization failed ERROR: conntrackd cannot start, please check the logfile for more info Signed-off-by: Arturo Borrero Gonzalez <arturo@debian.org> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src/main: refresh help messageArturo Borrero2016-09-051-12/+8
| | | | | | | | | | | It seems there are two kind of options: * general commands (-d, -v, -h, -C) * client commands (which requires another conntrackd instance) Refresh the help message to better reflect this. Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* conntrackd: remove unnecessary separator character from usage output.Mart Frauenlob2016-04-071-2/+2
| | | | | Signed-off-by: Mart Frauenlob <mart.frauenlob@chello.at> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* conntrackd: add systemd supportArturo Borrero2015-11-171-1/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds basic systemd support. The feature can be enabled/disabled at configure time: ./configure --disable-systemd Also, at runtime in conntrackd.conf General { Systemd on|off } (by default it's enabled both at runtime and at configure time) * tell systemd about conntrackd readiness: When conntrackd starts, it will send systemd the data "READY=1". At the point the data is sent, conntrackd is fully ready to work (configuration was OK, sockets OK, et all), so other actions depending on conntrackd can be safely chained in the machine boot process. * tell systemd about conntrackd shutting down: If the admin kills conntrackd with `conntrackd -k', the data "STOPPING=1" will be send to systemd so it learns about the daemon shutting down. Same for manual signals. * watchdog support: The admin can configure systemd to watch the conntrackd daemon and perform some actions if conntrackd dies: restart it, reboot the machine, etc... Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* conntrackd: fix compiler warningsFlorian Westphal2013-06-051-2/+20
| | | | | | | | | main.c:359:6: warning: ignoring return value of 'nice' [..] main.c:395:7: warning: ignoring return value of 'chdir' [..] run.c:43:17: warning: declaration of 'signal' shadows a global declaration Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* conntrackd: add cthelper infrastructure (+ example FTP helper)Pablo Neira Ayuso2012-08-011-1/+2
| | | | | | | | | | | | This patch adds the user-space helper infrastructure. It also contains the implementation of the FTP helper in user-space. There's one example file that you can use to configure conntrackd as user-space connection tracking helper under: doc/helper/conntrackd.conf Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* conntrackd: generalize file descriptor infrastructurePablo Neira Ayuso2012-08-011-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch generalizes the select-based file descriptor infrastructure by allowing you to register file descriptors and its callbacks. Instead of hardcoding the descriptors that needs to be checked. Now, struct fds_item contains a callback and pointer to data that is passed to it: struct fds_item { struct list_head head; int fd; + void (*cb)(void *data); + void *data; }; Then, we check which ones are active in the select_main_step() function: list_for_each_entry(cur, &STATE(fds)->list, head) { if (FD_ISSET(cur->fd, &readfds)) cur->cb(cur->data); } And it invoked the corresponding callback. I had to slightly modify the channel infrastructure to fit it into the changes. This modularity is required for the upcoming cthelper support. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: manpage and help display improvementsAdrian Bridgett2012-03-201-0/+1
| | | | | | | | This patch adds missing information regarding several conntrackd options to the manpage and the help info that is displayed in the command line. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* conntrackd: support `-i exp -x' and `-e exp -x' optionsPablo Neira Ayuso2012-01-221-0/+4
| | | | | | | | | | This patch allows you to dump the internal and external expectation cache in XML. % conntrackd -i exp -x <flow><layer3 protonum="2" protoname="ipv4"><expected><src>192.168.1.135</src><dst>130.89.148.12</dst></expected><mask><src>255.255.255.255</src><dst>255.255.255.255</dst></mask><master><src>192.168.1.135</src><dst>130.89.148.12</dst></master></layer3><layer4 protonum="6" protoname="tcp"><expected><sport>0</sport><dport>9082</dport></expected><mask><sport>0</sport><dport>65535</dport></mask><master><sport>50518</sport><dport>21</dport></master></layer4><meta><helper-name>ftp</helper-name></meta></flow> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* conntrackd: support for expectation synchronizationPablo Neira Ayuso2012-01-101-13/+56
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds support to synchronize expectations between firewalls. This addition aims to re-use as much as possible of the existing infrastructure for stability reasons. The expectation support has been tested with the FTP helper. This extension requires libnetfilter_conntrack 1.0.0. If this is the first time you're playing with conntrackd, I *strongly* recommend you to get working setup of conntrackd without expectation support before as described in the documentation. Then, enabling expectation support is rather easy. To know more about expectations, if you're not familiar with them, I suggest you to read: "Netfilter's Connection Tracking System" http://people.netfilter.org/pablo/docs/login.pdf Reprinted from ;login: The Magazine of USENIX, vol. 31, no. 3 (Berkeley, CA: USENIX Association, 2006, pp40-45.) In short, expectations allow one Linux firewall to filter multi-flow traffic like FTP, SIP and H.323. In my testbed, there are two firewalls in a primary-backup configuration running keepalived. The use a couple of floating cluster IP address (192.168.0.100 and 192.168.1.100) that are used by the client. These firewalls protect one FTP server (192.168.1.2) that will be accessed by one client. In ASCII art, it looks like this: 192.168.0.100 192.168.1.100 eth1 eth2 fw-1 / \ FTP -- client ------ ------ server -- 192.168.0.2 \ / 192.168.1.2 fw-2 This is the rule-set for the firewalls: -A POSTROUTING -t nat -s 192.168.0.2/32 -d 192.168.1.2/32 -j SNAT --to-source 192.168.1.100 -A INPUT -p tcp -m tcp --dport 22 -j ACCEPT -A INPUT -m state --state INVALID -j DROP -A FORWARD -m state --state RELATED -j ACCEPT -A FORWARD -i eth2 -m state --state ESTABLISHED -j ACCEPT -A FORWARD -i eth1 -p tcp -m tcp --dport 21 --tcp-flags FIN,SYN,RST,ACK SYN -m state --state NEW -j ACCEPT -A FORWARD -i eth1 -p tcp -m state --state ESTABLISHED -j ACCEPT -A FORWARD -m state --state INVALID -j LOG --log-prefix "invalid: " The following steps detail how to check that the expectation support works fine for conntrackd: 1) You have to enable the expectation support in the configuration file with the following option: Sync { ... Options { ExpectationSync { ftp sip h323 } } } This enables expectation synchronization for the FTP, SIP and H.323 helpers. You can alternatively use: Sync { ... Options { ExpectationSync On } } To enable expectation synchronization for all helpers. 2) Make sure you have loaded the FTP helper in both firewalls. root@fw1# modprobe nf_conntrack_ftp root@fw2# modprobe nf_conntrack_ftp 3) Switch to the client. Start one FTP control connection to one server that is protected by the firewalls, enter passive mode: (term-1) user@client$ nc 192.168.1.2 21 220 dummy FTP server USER anonymous 331 Please specify the password. PASS nothing 230 Login successful. PASV 227 Entering Passive Mode (192,168,1,2,163,11). This means that port 163*256+11=41739 will be used for the data traffic. Read this if you are not familiar with the FTP protocol: http://www.freefire.org/articles/ftpexample.php 3) Switch to fw-1 (primary) to check that the expectation is in the internal cache. root@fw1# conntrackd -i exp proto=6 src=192.168.0.2 dst=192.168.1.2 sport=0 dport=41739 mask-src=255.255.255.255 mask-dst=255.255.255.255 sport=0 dport=65535 master-src=192.168.0.2 master-dst=192.168.1.2 sport=36390 dport=21 [active since 5s] 4) Switch to fw-2 (backup) to check that the expectation has been successfully replicated. root@fw2# conntrackd -e exp proto=6 src=192.168.0.2 dst=192.168.1.2 sport=0 dport=41739 mask-src=255.255.255.255 mask-dst=255.255.255.255 sport=0 dport=65535 master-src=192.168.0.2 master-dst=192.168.1.2 sport=36390 dport=21 [active since 8s] 5) Make the primary firewall fw-1 fail. Now fw-2 becomes primary. 6) Switch to fw-2 (primary) to commit the external cache into the kernel. root@fw2# conntrackd -c exp The logs should display that the commit was successful: root@fw2# tail -100f /var/log/conntrackd.log [Wed Dec 7 22:16:31 2011] (pid=19195) [notice] committing external cache: expectations [Wed Dec 7 22:16:31 2011] (pid=19195) [notice] Committed 1 new entries [Wed Dec 7 22:16:31 2011] (pid=19195) [notice] commit has taken 0.000366 seconds 7) Switch to the client. Open a new terminal and connect to the port that has been announced by the server: (term-2) user@client$ nc -vvv 192.168.1.2 41739 (UNKNOWN) [192.168.1.2] 41739 (?) open 8) Switch to term-1 and ask for the file listing: [...] 227 Entering Passive Mode (192,168,1,2,163,11). LIST 9) Switch to term-2, it should display the listing. That means everything has worked fine. You may want to try disabling the expectation support and repeating the steps to check that *it does not work* without the state-synchronization. You can also display expectation statistics by means of: root@fwX# conntrackd -s exp This update requires no changes in the primary-backup.sh script that is used by the HA manager to interact with conntrackd. Thus, we provide a backward compatible command line interface. Regarding the Filter clause and expectations, we use the master conntrack to filter expectation events. The filtering is performed in user-space. No kernel-space filtering support for expectations yet (this support should go in libnetfilter_conntrack at some point). This patch also includes support to disable caching and to allow direct injection of expectations. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* conntrackd: generalize local handler actionsPablo Neira Ayuso2012-01-101-12/+12
| | | | | | | This patch prepares the introduction of actions with the expectation table. Mostly renamings. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* conntrackd: add `-s queue' to display queue statisticsPablo Neira Ayuso2009-06-201-1/+5
| | | | | | | | | | | | | | | | | | | | This patch re-introduces `-s queue' but now it displays generic queue statistics. # conntrackd -s queue active queue objects: 0 queue txqueue: current elements: 0 maximum elements: 2147483647 not enough space errors: 0 queue rsqueue: current elements: 72 maximum elements: 128 not enough space errors: 0 Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* conntrackd: rename `-s queue' option by `-s rsqueue'Pablo Neira Ayuso2009-06-201-3/+3
| | | | | | | This patch renames the statistics option that displays the content of the resend queue which is used by the ftfw mode. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* conntrackd: add support to display statistics on existing child processesPablo Neira Ayuso2009-06-111-0/+4
| | | | | | | | | | This patch adds the ability to dump the list of existing child processes. In general, it would be hard to display one since child processes are generally forked for very specific tasks, like commit and flush operations, and they have very limited lifetime. However, this can be handy for debugging problems. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* conntrackd: change scheduler and priority via configuration filePablo Neira Ayuso2009-04-141-1/+18
| | | | | | | | 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>
* sync-mode: change `multicast' by `link' for `-s' optionPablo Neira Ayuso2009-03-171-2/+9
| | | | | | | | | 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>
* 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 Ayuso2009-02-151-2/+21
| | | | | | | | 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>
* src: add Nice clause to set the nice valuePablo Neira Ayuso2009-02-081-0/+1
| | | | Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: add `-s queue' and change `-v' behaviourPablo Neira Ayuso2009-01-171-5/+17
| | | | | | | | | | | | This patch moves the existing `-v' behaviour to `-s queue' where it really belongs. The `-v' option is now left to display the version which is the common use of it. # conntrackd -v Connection tracking userspace daemon v0.9.9. Licensed under GPLv2. (C) 2006-2009 Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: support for redundant dedicated linksPablo Neira Ayuso2009-01-171-1/+5
| | | | | | | | This patch adds support for redundant dedicated links. You can add a pool of dedicated links that can be used if the current active fails. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* conntrackd: fix missing \n in conntrackd -hPablo Neira Ayuso2008-12-211-3/+3
| | | | | | | This patch fixes a missing \n in the help message displayed with conntrackd -h. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: add run-time statistics via `-s runtime'Pablo Neira Ayuso2008-12-211-1/+5
| | | | | | | | | | | | This patch adds run-time statistics that you can check via `conntrackd -s runtime'. This information is useful for trouble-shooting. This patch replaces several log messages that can be triggered in runtime. The idea behind this patch is to avoid log message flooding under errors. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: add cache statistics via `-s cache'Pablo Neira Ayuso2008-12-211-1/+5
| | | | | | | | | | | | This patch adds cache statistics that you can check via `conntrackd -s cache'. This information is useful for trouble-shooting. This patch replaces several log messages that can be triggered in runtime. The idea behind this patch is to avoid log message flooding under errors. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: add network statistics via `-s network'Pablo Neira Ayuso2008-12-211-2/+18
| | | | | | | | | | | | This patch adds networks statistics that you can check via `conntrackd -s network'. This information is useful for trouble-shooting. This patch replaces several log messages that can be triggered in runtime. The idea behind this patch is to avoid log message flooding under errors. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* filter: choose the filtering method via configuration filePablo Neira Ayuso2008-11-181-4/+0
| | | | | | | | | | | | | | | | This patch changes the current behaviour of the filtering selection. Up to now, conntrackd has used the kernel version to select the filtering method based on the following logic: If kernel is >= 2.6.26 we use BSF-based filtering from kernel-space, otherwise, default to userspace. However, this filtering method still lacks of IPv6 support and it requires a patch that got into 2.6.29 to filter IPv6 addresses from kernel-space. To fix this issue, we default to user-space filtering and let the user choose the method via the configuration file. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* ftfw: add option `-v' to output debugging information (if any)Pablo Neira Ayuso2008-10-261-1/+6
| | | | | | | | | | | | | | | | This patch introduces the option `-v' to show useful debugging information, if any. As for now, only sync-ftfw.c make use of it to display the content and the length of the resent list/queue. This is useful to check for message leaks. Other working modes or synchronization approaches may use it to display debugging information in the future. This patch removes _SIGNAL_DEBUG in sync-ftfw.c that was used for for the same purpose. However, it could only be enabled at compilation time and it uses signalling instead of the standard UNIX socket interface that conntrackd provides. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* conntrackd: add missing information on -t to the helpPablo Neira Ayuso2008-10-211-2/+3
| | | | | | | This patch adds missing information on -t when conntrackd is invoked with -h. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* filter: check if kernel-space filtering is availablePablo Neira Ayuso2008-09-171-0/+4
| | | | | | | | Check if the Linux kernel is >= 2.6.26, otherwise it does not support kernel-space filtering. This is not clean but we have no choice, the BSF infrastructure does not return ENOTSUPP for unsupported operations. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* cleanup: Linux kernel version checkingPablo Neira Ayuso2008-09-171-6/+1
| | | | | | | Minor cleanup to save a couple of lines in the Linux kernel version checking. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* conntrackd: add -t option to shorten conntrack timeoutsPablo Neira Ayuso2008-08-021-0/+4
| | | | | | | | | | | | | | | | | This patch adds the new option `-t' for conntrackd. This option shortens the value of the timeout for the cached entries that lives in the kernel. This option is particularly useful to remove the zombie established entries that remain in kernel if the user tests the platform by forcing the takeover from one to another node several times. We currently use the value of CommitTimeout which is sane for it. Adding a new option does not seem to add more flexibility IMO. Once we get the patches to notify user changes via ctnetlink and the netlink flag NLM_F_ECHO works, we may directly invoke a massive purge of the entries, however, such solution would still need evaluation. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* fix unsecure usage of printf and include limits.h (PATH_MAX and INT_MAX)Albin Tonerre2008-06-151-0/+1
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* revert relicensing... still we use linux_list.h code which seems to be GPLv2 ↵/C=EU/ST=EU/CN=Pablo Neira Ayuso/emailAddress=pablo@netfilter.org2008-03-081-1/+1
| | | | only which is incompatible AFAIK
* relicense conntrack-tools as GPLv3+, so far the most significant contributor ↵/C=EU/ST=EU/CN=Pablo Neira Ayuso/emailAddress=pablo@netfilter.org2008-03-081-1/+1
| | | | has been Max Kellermann and has no issues with relicensing their contributions.
* cleanup: remove config_set from main(), use config_file variable insteadorigin/C=EU/ST=EU/CN=Pablo Neira Ayuso/emailAddress=pablo@netfilter.org2008-02-221-4/+3
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* From: Max Kellermann <max@duempel.org>/C=EU/ST=EU/CN=Pablo Neira Ayuso/emailAddress=pablo@netfilter.org2008-02-141-3/+3
| | | | whitespace cleanups
* Max Kellermann <max@duempel.org>:/C=EU/ST=EU/CN=Pablo Neira Ayuso/emailAddress=pablo@netfilter.org2008-01-181-2/+2
| | | | Simplify logging infrastructure
* Max Kellermann <max@duempel.org>:/C=EU/ST=EU/CN=Pablo Neira Ayuso/emailAddress=pablo@netfilter.org2008-01-181-52/+0
| | | | | there is no need to check capabilities - the socket() call will fail a few lines later anyway, producing an error message which is good enough.
* Max Kellermann <max@duempel.org>:/C=EU/ST=EU/CN=Pablo Neira Ayuso/emailAddress=pablo@netfilter.org2008-01-171-4/+4
| | | | import only required C headers and put local headers on top to check
* Max Kellerman <max@duempel.org>:/C=EU/ST=EU/CN=Pablo Neira Ayuso/emailAddress=pablo@netfilter.org2008-01-171-8/+5
| | | | | | | o always close stdin - even in non-daemon mode, it is of no use o chdir("/") to release the cwd inode o ignore setsid() failure, because there is only one possible and o fix harmless error condition
* use umask() to set up file permissions/C=EU/ST=EU/CN=Pablo Neira Ayuso/emailAddress=pablo@netfilter.org2008-01-151-1/+4
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* Max Kellermann <max@duempel.org>:/C=EU/ST=EU/CN=Pablo Neira Ayuso/emailAddress=pablo@netfilter.org2008-01-151-3/+9
| | | | Fix tons of gcc warnings