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* net: dns: Allow to set variable with the resolved hostSascha Hauer2019-01-041-4/+10
| | | | | | | Add an additional [VARIABLE] parameter to the host command to allow setting a variable with the resolved IP address. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* net: dns: leave host command with error on failureSascha Hauer2019-01-041-4/+9
| | | | | | | When we can't resolv a host we should return an error rather than just successfully. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* net: dns: return error codesSascha Hauer2018-11-291-14/+22
| | | | | | | | | | | | | | The resolv() function used to return the IP address. When net_udp_new() fails we return an error code though which the callers of resolv() take as an IP address. This is wrong of course and we could return 0 in this case. Instead we return an error code and pass the resolved IP as a pointer which allows us to return proper error codes. This patch also adds error messages and error returns to the various callers of resolv() which used to just continue with a zero IP and let the user figure out what went wrong. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* net: dns: Use pr_debugSascha Hauer2018-11-291-12/+15
| | | | | | | | Use pr_debug rather than debug and add a pr_fmt string to give the messages more context. While at it add a debug message which prints the ip when successfully resolved. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* net: Add functions to get/set nameserver and domainnameSascha Hauer2017-12-011-6/+2
| | | | | | | | | It's more convenient to have getter/setter functions for variables rather than using the detour around global vars which use string matching and all kinds of overhead in the background. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* net: Make domainname and nameserver globalvarsSascha Hauer2017-12-011-2/+2
| | | | | | | | | Register domainname and nameserver as globalvars rather than attaching them to a dedicated net device. the global device already exists and already contains much of the barebox configuration, so no need to add an extra device for network config. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* convert users to %pI4Sascha Hauer2016-09-221-4/+2
| | | | | | | Convert users of ip_to_string() and print_IPaddr() to %pI4 and remove the now unused functions. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* string: Fix (v)asprintf prototypesSascha Hauer2016-04-151-2/+2
| | | | | | | | | | Our asprintf and vasprintf have different prototypes than the glibc functions. This causes trouble when we want to share barebox code with userspace code. Change the prototypes for (v)asprintf to match the glibc prototypes. Since the current (v)asprintf are convenient to use change the existing functions to b(v)asprintf. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* net: resolv: Make argument constSascha Hauer2015-12-141-2/+2
| | | | | | resolv() is not allowed to change the hostname argument, make it const. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* dns: handle incoming packets in the separate dns_recv() functionAntony Pavlov2015-07-011-4/+9
| | | | | | | | The separation of incoming packets handling makes it much easier to run barebox dns client on top of picotcp network stack in the future. Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* commands: introduce CMD_HOSTHolger Schurig2014-05-141-1/+2
| | | | | | | | ... because NET_RESOLV can be used alone to turn on the functionality of resolv(). Signed-off-by: Holger Schurig <holgerschurig@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* commands: harmonize in-barebox documentationHolger Schurig2014-05-141-5/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch does probably too much, but it's hard (and very cumbersome/time consuming) to break it out. What is does is this: * each command has one short description, e.g. "list MUX configuration" * made sure the short descriptions start lowercase * each command has one usage. That string contains just the options, e.g. "[-npn]". It's not part of the long help text. * that is, it doesn't say "[OPTIONS]" anymore, every usable option is listed by character in this (short) option string (the long description is in the long help text, as before) * help texts have been reworked, to make them - sometimes smaller - sometimes describe the options better - more often present themselves in a nicer format * all long help texts are now created with BUSYBOX_CMD_HELP_ macros, no more 'static const __maybe_unused char cmd_foobar_help[]' * made sure the long help texts starts uppercase * because cmdtp->name and cmdtp->opts together provide the new usage, all "Usage: foobar" texts have been removed from the long help texts * BUSYBOX_CMD_HELP_TEXT() provides the trailing newline by itself, this is nicer in the source code * BUSYBOX_CMD_HELP_OPT() provides the trailing newline by itself * made sure no line gets longer than 77 characters * delibertely renamed cmdtp->usage, so that we can get compile-time errors (e.g. in out-of-tree modules that use register_command() * the 'help' command can now always emit the usage, even without compiled long help texts * 'help -v' gives a list of commands with their short description, this is similar like the old "help" command before my patchset * 'help -a' gives out help of all commands Signed-off-by: Holger Schurig <holgerschurig@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* commands: group 'help' outputHolger Schurig2014-05-141-0/+1
| | | | | | | | | | | | | | | | | | | The old output of "help" was just producing a long list, that usually scrolled of the screen (even on a X11 terminal). This list is more compact, and also sorted by groups. The old output format (plus grouping) is now available with 'help -v'. Example: Information commands: ?, devinfo, help, iomem, meminfo, version Boot commands: boot, bootm, go, loadb, loads, loadx, loady, saves, uimage ... Signed-off-by: Holger Schurig <holgerschurig@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* barebox: remove double semicolonsAlexander Aring2013-11-181-1/+1
| | | | | Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* dns: fix recursive loopSascha Hauer2012-05-161-2/+9
| | | | | | | resolv() uses getenv_ip() which in turn calls resolv(). Fix this inifinite loop by not using getenv_ip directly. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* dns: use global nameserver/domainnameSascha Hauer2012-04-151-3/+3
| | | | | | | nameserver and domainname are now globally available in the 'net' device. use these variables. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* net dns: remove debug codeSascha Hauer2012-04-151-1/+1
| | | | Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* net: env: getenv_ip use resolvJean-Christophe PLAGNIOL-VILLARD2012-04-031-1/+1
| | | | | | | Introduce getenv_ip_dns to be able to do not do the resolv when using it in resolv for the nameserver (Do not loop). Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* commands: remove struct command pointer from commandsSascha Hauer2012-02-271-1/+1
| | | | | | This is unused in all commands and thus can be removed. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* net: add a context to the packet handlerSascha Hauer2011-04-121-2/+2
| | | | | | | This is not yet used, but with this the different network commands can get rid of their global data. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* net: add dns supportSascha Hauer2010-06-171-0/+264
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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