diff options
| -rw-r--r-- | networking/udhcp/d6_dhcpc.c | 74 |
1 files changed, 37 insertions, 37 deletions
diff --git a/networking/udhcp/d6_dhcpc.c b/networking/udhcp/d6_dhcpc.c index 65ff5deab..57ad968cd 100644 --- a/networking/udhcp/d6_dhcpc.c +++ b/networking/udhcp/d6_dhcpc.c @@ -1589,44 +1589,44 @@ int udhcpc6_main(int argc UNUSED_PARAM, char **argv) * . . * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ */ - free(client6_data.ia_na); - client6_data.ia_na = d6_copy_option(packet.d6_options, packet_end, D6_OPT_IA_NA); - if (!client6_data.ia_na) { - bb_error_msg("no %s option, ignoring packet", "IA_NA"); - continue; - } - if (client6_data.ia_na->len < (4 + 4 + 4) + (2 + 2 + 16 + 4 + 4)) { - bb_error_msg("IA_NA option is too short:%d bytes", client6_data.ia_na->len); - continue; - } - iaaddr = d6_find_option(client6_data.ia_na->data + 4 + 4 + 4, - client6_data.ia_na->data + client6_data.ia_na->len, - D6_OPT_IAADDR - ); - if (!iaaddr) { - bb_error_msg("no %s option, ignoring packet", "IAADDR"); - continue; - } - if (iaaddr->len < (16 + 4 + 4)) { - bb_error_msg("IAADDR option is too short:%d bytes", iaaddr->len); - continue; - } - /* Note: the address is sufficiently aligned for cast: - * we _copied_ IA-NA, and copy is always well-aligned. - */ - requested_ipv6 = (struct in6_addr*) iaaddr->data; - move_from_unaligned32(lease_seconds, iaaddr->data + 16 + 4); - lease_seconds = ntohl(lease_seconds); - /* paranoia: must not be too small and not prone to overflows */ - if (lease_seconds < 0x10) - lease_seconds = 0x10; + free(client6_data.ia_na); + client6_data.ia_na = d6_copy_option(packet.d6_options, packet_end, D6_OPT_IA_NA); + if (!client6_data.ia_na) { + bb_error_msg("no %s option, ignoring packet", "IA_NA"); + continue; + } + if (client6_data.ia_na->len < (4 + 4 + 4) + (2 + 2 + 16 + 4 + 4)) { + bb_error_msg("IA_NA option is too short:%d bytes", client6_data.ia_na->len); + continue; + } + iaaddr = d6_find_option(client6_data.ia_na->data + 4 + 4 + 4, + client6_data.ia_na->data + client6_data.ia_na->len, + D6_OPT_IAADDR + ); + if (!iaaddr) { + bb_error_msg("no %s option, ignoring packet", "IAADDR"); + continue; + } + if (iaaddr->len < (16 + 4 + 4)) { + bb_error_msg("IAADDR option is too short:%d bytes", iaaddr->len); + continue; + } + /* Note: the address is sufficiently aligned for cast: + * we _copied_ IA-NA, and copy is always well-aligned. + */ + requested_ipv6 = (struct in6_addr*) iaaddr->data; + move_from_unaligned32(lease_seconds, iaaddr->data + 16 + 4); + lease_seconds = ntohl(lease_seconds); + /* paranoia: must not be too small and not prone to overflows */ + if (lease_seconds < 0x10) + lease_seconds = 0x10; /// TODO: check for 0 lease time? - if (lease_seconds > 0x7fffffff / 1000) - lease_seconds = 0x7fffffff / 1000; - /* enter bound state */ - timeout = lease_seconds / 2; - bb_error_msg("lease obtained, lease time %u", - /*inet_ntoa(temp_addr),*/ (unsigned)lease_seconds); + if (lease_seconds > 0x7fffffff / 1000) + lease_seconds = 0x7fffffff / 1000; + /* enter bound state */ + timeout = lease_seconds / 2; + bb_error_msg("lease obtained, lease time %u", + /*inet_ntoa(temp_addr),*/ (unsigned)lease_seconds); d6_run_script(&packet, state == REQUESTING ? "bound" : "renew"); state = BOUND; |