diff options
| author | Denys Vlasenko | 2018-12-17 18:07:18 +0100 |
|---|---|---|
| committer | Denys Vlasenko | 2018-12-17 18:07:18 +0100 |
| commit | 6d3b4bb24da9a07c263f3c1acf8df85382ff562c (patch) | |
| tree | 62b1094f93c955774e8b2d4aee798029a5a71b7d /networking/udhcp/common.h | |
| parent | 4b72aebe80aaa50a765d5ff61d7d67ed731502d9 (diff) | |
| download | busybox-6d3b4bb24da9a07c263f3c1acf8df85382ff562c.zip busybox-6d3b4bb24da9a07c263f3c1acf8df85382ff562c.tar.gz | |
udhcpc: check that 4-byte options are indeed 4-byte, closes 11506
function old new delta
udhcp_get_option32 - 27 +27
udhcp_get_option 231 248 +17
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 1/0 up/down: 44/0) Total: 44 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'networking/udhcp/common.h')
| -rw-r--r-- | networking/udhcp/common.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/networking/udhcp/common.h b/networking/udhcp/common.h index 7ad603d..9511152 100644 --- a/networking/udhcp/common.h +++ b/networking/udhcp/common.h @@ -205,6 +205,10 @@ extern const uint8_t dhcp_option_lengths[] ALIGN1; unsigned FAST_FUNC udhcp_option_idx(const char *name, const char *option_strings); uint8_t *udhcp_get_option(struct dhcp_packet *packet, int code) FAST_FUNC; +/* Same as above + ensures that option length is 4 bytes + * (returns NULL if size is different) + */ +uint8_t *udhcp_get_option32(struct dhcp_packet *packet, int code) FAST_FUNC; int udhcp_end_option(uint8_t *optionptr) FAST_FUNC; void udhcp_add_binary_option(struct dhcp_packet *packet, uint8_t *addopt) FAST_FUNC; #if ENABLE_UDHCPC || ENABLE_UDHCPD |