udhcp: add 100 and 101 dhcp options for ipv4

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>

1 files changed, 4 insertions, 0 deletions

diff --git a/networking/udhcp/common.c b/networking/udhcp/common.c
index fc4de5716..59cf723ee 100644
--- a/networking/udhcp/common.c
+++ b/networking/udhcp/common.c
@@ -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