summaryrefslogtreecommitdiff
path: root/networking/udhcp
AgeCommit message (Collapse)Author
2015-07-30udhcpc: dns labels can actually start with a numberArthur Gautier
While RFC1035 recommends a label not to start with a number, there is actually no such limitation in dns. One may buy a domain name like 0x1.net and use it. This commit remove this check and allow a user to use such domains. Signed-off-by: Arthur Gautier <baloo@gandi.net> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-07-19libbb: add a function to make a copy of a region of memoryRon Yorston
Introduce a library routine to package the idiom: p = xmalloc(b, n); memcpy(p, b, n); and use it where possible. The example in traceroute used xzalloc but it didn't need to. function old new delta xmemdup - 32 +32 last_main 834 826 -8 make_device 2321 2311 -10 common_traceroute_main 3698 3685 -13 readtoken1 3182 3168 -14 procps_scan 1222 1206 -16 forkchild 655 638 -17 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/6 up/down: 32/-78) Total: -46 bytes Signed-off-by: Ron Yorston <rmy@frippery.org> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-01-27dhcpd: fix an improper widening conversionDenys Vlasenko
We wanted to detect when tv_sec = unsigned1 - unsigned2 underflows by looking at tv_sec's sign. But if tv_sec is long and it is wider than unsigned, we get unsigned -> long conversion which is in this case never negative. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2014-12-25udhcpd: account for script delay in leaseJohn Schroeder
Prevent nasty surprises if script runs longer than lease time / 2. Signed-off-by: John Schroeder <jschroed@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2014-12-21udhcpc: account for script run timeDenys Vlasenko
Based on the following user report: I ran into an issue where I was seeing a long delay in the scripts called in udhcp_run_script. I was using an old version of OpenWrt (kamikaze) and a satellite modem. An NTP script was being called and the modem would sometimes take a long time to respond to the DNS lookup when it was offline. This delay started affecting my lease time. The lease that I would get from my satellite modem before it was online would be short: only 60 seconds. The delay with NTP and the modem would typically be about 18 seconds. This would cause the first DHCP renew request from dhcpc to be a little late. Under certain circumstances, I could even see the first DHCP renew to occur after the lease had expired! function old new delta udhcpc_main 2816 2837 +21 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2014-11-25udhcpd: if a lease from lease file coincides with a static one, ignore itDenys Vlasenko
function old new delta read_leases 269 328 +59 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2014-10-30udhcpd: add option for tweaking arppingMichel Stam
Some clients have a very short timeout for sending the DHCP DISCOVER, shorter than the arpping timeout of 2000 milliseconds that udhcpd uses by default. This patch allows tweaking the timeout, or disabling of arpping altogether, at the risk of handing out addresses which are already in use. function old new delta udhcpd_main 1460 1501 +41 udhcpc_main 2814 2851 +37 packed_usage 29957 29974 +17 arpping 477 493 +16 find_free_or_expired_nip 161 174 +13 send_offer 285 292 +7 nobody_responds_to_arp 85 89 +4 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 7/0 up/down: 135/0) Total: 135 bytes Signed-off-by: Michel Stam <m.stam@fugro.nl> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2014-07-16udhcp: add PXELINUX path prefix option (code 210) definitionJeremy Kerr
Like d3092c99, this change adds support for the DHCP "path-prefix" option, as defined in RFC 5071. We use the string identifer "pxepathprefix". Adding this option makes string parsing in the hook scripts simpler. function old new delta dhcp_option_strings 255 269 +14 dhcp_optflags 72 74 +2 Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2014-06-16udhcpc: make hostname sanitization optional. Closes 3979Denys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2014-02-27udhcpc: ignore NAKs from "wrong" servers. Closes 4267Denys Vlasenko
function old new delta udhcpc_main 2716 2814 +98 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2014-02-19udhcpc: fix BPF filter. Hopefully fixes the root cause of 4598 and 6746Denys Vlasenko
Use a *signed* large positive value in BPF filter to indicate success. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2014-02-07udhcpc: in comments, explain the kind of raw socket we createDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2014-02-03udhcpc: don't use BPF filter, users report problems (bugs 4598, 6746)Denys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-11-12udhcp: add PXELINUX config file option (code 209) definitionJeremy Kerr
This change adds a definition for DHCP option 209. RFC 5071 defines code 209 as a configuration file for a PXE bootloader; this change uses the string "pxeconffile" as its text identifier. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-11-03udhcpc: allow zero server-id. Closes 6614.Denys Vlasenko
function old new delta bcast_or_ucast - 47 +47 udhcp_send_kernel_packet 271 295 +24 udhcpc_main 2696 2705 +9 udhcp_send_raw_packet 456 459 +3 send_release 90 76 -14 send_renew 105 77 -28 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 3/2 up/down: 83/-42) Total: 41 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-10-28udhcpc: make DHCP packets to have at least 300 DHCP bytesJohannes Stezenbach
Commit b8b72f02 removed all padding from DHCP packets to fix operation with buggy servers which can't handle maximum sized packets. But it introduced a regression with buggy routers which drop DHCP packets smaller than 300 bytes (i.e. 342 byte ethernet packets). Add back some padding to work around. function old new delta udhcp_send_kernel_packet 268 292 +24 udhcp_send_raw_packet 462 473 +11 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/0 up/down: 35/0) Total: 35 bytes Signed-off-by: Johannes Stezenbach <js@sig21.net> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-08-08udhcpc: tweak help text moreDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-08-08udhcpc: tweak help textDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-08-05udhcpc: tweak help textDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-05-17udhcp: code shrinkDenys Vlasenko
function old new delta attach_option 416 413 -3 allocate_tempopt_if_needed 74 - -74 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-05-17udhcpc: fix a problem with binary-encoded options #2Denys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-03-14udhcpd: also add -I ADDR to help textDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-03-13udhcpd: add -I LOCAL_ADDR optionDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-01-28udhcpc6: fix port numbers used if !FEATURE_UDHCP_PORTDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-01-14whitespace cleanup. no code changesDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2012-09-27udhcpc[6]: allow discover_retries == 0 (infinite)Felix Fietkau
Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2012-09-17ushcpc: gracefully handle packets with CHECKSUM_PARTIALAlexey Froloff
function old new delta udhcp_recv_raw_packet 415 579 +164 change_listen_mode 317 370 +53 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/0 up/down: 217/0) Total: 217 bytes Signed-off-by: Alexey Froloff <raorn@raorn.name> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2012-08-10udhcp[cd]: fix binding to network aliases. Closes 5432, 5438Denys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2012-07-27udhcpc: make -O <numeric_opt> work. Closes 5402Denys Vlasenko
function old new delta udhcpc_main 2642 2685 +43 udhcp_recv_raw_packet 414 415 +1 d6_recv_raw_packet 248 249 +1 udhcpc6_main 2430 2413 -17 add_client_options 239 213 -26 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 3/2 up/down: 45/-43) Total: 2 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2012-07-26Add yet another missing ALIGN2 on a global declaration.Denys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2012-07-24dhcpd: write lease file on exitDenys Vlasenko
function old new delta udhcpd_main 1431 1403 -28 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2012-07-24*: declare strings with ALIGN1, as appropriateMichael Tokarev
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2012-06-02udhcpc[6]: show select timeout in logDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2012-05-02udhcpc6: depend on ipv6Mike Frysinger
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2012-04-22udhcpc: fix improper size calculation for OPTION_STRING_HOSTDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2012-04-20fix build breakage found by randconfigDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2012-04-17udhcp: make arpping code resistant to time jumpsDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-12-16udhcp: finish support of classless static routes (now the correct patch!)Michael McTernan
Signed-off-by: Michael McTernan <Michael.McTernan.2001@cs.bris.ac.uk> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-12-08udhcpc: sanitize hostnames in incoming packets. Closes 3979.Denys Vlasenko
The following options are replaced with string "bad" if they contain malformed hostname: HOST_NAME, DOMAIN_NAME, NIS_DOMAIN, TFTP_SERVER_NAME function old new delta xmalloc_optname_optval 850 888 +38 attach_option 440 443 +3 len_of_option_as_string 13 14 +1 dhcp_option_lengths 13 14 +1 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 4/0 up/down: 43/0) Total: 43 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-11-18udhcpc: shrink code by setting xid more economicallyDenys Vlasenko
function old new delta send_decline 90 82 -8 udhcpc_main 2649 2640 -9 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-11-16udhcpc6: rudimentary code to export data to script; fix IAADDR parsingDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-11-08udhcpc[6]: tweak help text, remove -B from udhcpc6 and "--version" from bothDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-11-07udhcpc6: set hop limit to 1 in emitted raw packetsDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-11-07udhcpc6: fix endiannessDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-11-07udhcpc6: new applet. Not yet functional.Denys Vlasenko
It builds. It sends Solicit packets. Not sure these packets are well-formed. I have no server to test it against. function old new delta udhcpc6_main - 2426 +2426 d6_send_raw_packet - 428 +428 d6_send_kernel_packet - 274 +274 d6_recv_raw_packet - 248 +248 send_d6_discover - 177 +177 packed_usage 28795 28966 +171 d6_run_script - 156 +156 send_d6_renew - 140 +140 send_d6_release - 126 +126 d6_recv_kernel_packet - 116 +116 send_d6_select - 95 +95 perform_d6_release - 78 +78 d6_find_option - 74 +74 init_d6_packet - 54 +54 d6_copy_option - 48 +48 d6_mcast_from_client_config_ifindex - 42 +42 d6_dump_packet - 24 +24 static.FF02__1_2 - 16 +16 d6_store_blob - 13 +13 applet_names 2432 2440 +8 applet_main 1412 1416 +4 applet_nameofs 706 708 +2 add_d6_client_options - 1 +1 ------------------------------------------------------------------------------ (add/remove: 21/0 grow/shrink: 4/0 up/down: 4721/0) Total: 4721 bytes text data bss dec hex filename 879080 493 7584 887157 d8975 busybox_old 884585 497 7584 892666 d9efa busybox_unstripped Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-11-07udhcpc: trim help text, rename badly-named variableDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-11-07udhcpc: code shrinkDenys Vlasenko
function old new delta udhcpc_main 2646 2649 +3 udhcp_run_script 816 802 -14 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-11-05udhcpc: remove workaround for bugs in Win98 dhcp server ("MSFT 98" vendor ↵Denys Vlasenko
string) Stats for last three commits: function old new delta udhcpc_main 2635 2646 +11 udhcp_recv_raw_packet 425 414 -11 udhcp_recv_kernel_packet 210 134 -76 packed_usage 28940 28857 -83 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/3 up/down: 11/-170) Total: -159 bytes text data bss dec hex filename 879524 493 7584 887601 d8b31 busybox_old 879340 493 7584 887417 d8a79 busybox_unstripped Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-11-05udhcpc: reuse string constant; remove unneeded memset(0)Denys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-11-05udhcpc: deprecate --hostname NAMEDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
generated by cgit v1.1 at 2024-11-06 08:46:26 +0000