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udhcp: add 100 and 101 dhcp options for ipv4

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Support for the IEEE timezone string and timezone database strings (100
and 101 options respectively) is added for ipv4, conforming to RFC-4833.

The two options are passed to hook scripts in the variables tzstr and
tzdbstr.

function                                             old     new   delta
dhcp_option_strings                                  280     294     +14
dhcp_optflags                                         76      80      +4
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 18/0)               Total: 18 bytes

Signed-off-by: Antoine Girard-Vallée <antoine.girard-vallee@savoirfairelinux.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Antoine Girard-Vallée
2019-03-08 09:24:42 -05:00
committed by Denys Vlasenko
parent 2945822f86
commit 0e7bd69bb5
2 changed files with 6 additions and 0 deletions
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4
networking/udhcp/common.c
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@ -54,6 +54,8 @@ const struct dhcp_optflag dhcp_optflags[] = {
{ OPTION_STRING , 0x43 }, /* DHCP_BOOT_FILE */
//TODO: not a string, but a set of LASCII strings:
// { OPTION_STRING , 0x4D }, /* DHCP_USER_CLASS */
{ OPTION_STRING , 0x64 }, /* DHCP_PCODE */
{ OPTION_STRING , 0x65 }, /* DHCP_TCODE */
#if ENABLE_FEATURE_UDHCP_RFC3397
{ OPTION_DNS_STRING | OPTION_LIST , 0x77 }, /* DHCP_DOMAIN_SEARCH */
{ OPTION_SIP_SERVERS , 0x78 }, /* DHCP_SIP_SERVERS */
@ -121,6 +123,8 @@ const char dhcp_option_strings[] ALIGN1 =
"tftp" "\0" /* DHCP_TFTP_SERVER_NAME*/
"bootfile" "\0" /* DHCP_BOOT_FILE */
// "userclass" "\0" /* DHCP_USER_CLASS */
"tzstr" "\0" /* DHCP_PCODE */
"tzdbstr" "\0" /* DHCP_TCODE */
#if ENABLE_FEATURE_UDHCP_RFC3397
"search" "\0" /* DHCP_DOMAIN_SEARCH */
// doesn't work in udhcpd.conf since OPTION_SIP_SERVERS