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wscutil: Use a utility for building authorized_macs 

Add the wfa_build_authorized_macs function (wfa_ prefix following the
wfa_extract_ naming) and use it in wsc_build_probe_response.  The logic
is changed slightly to treat the first 6-zeros address in the array as
the end of the array.
This commit is contained in:
Andrew Zaborowski 2020-08-28 14:46:42 +02:00 committed by Denis Kenzior
parent 1449b8fbc4
commit 8c1bf5385e
1 changed files with 17 additions and 15 deletions
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32
src/wscutil.c
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@ -2094,6 +2094,20 @@ static void build_wsc_state(struct wsc_attr_builder *builder,
wsc_attr_builder_put_u8(builder, 1); \
wsc_attr_builder_put_u8(builder, 0x20)
static void wfa_build_authorized_macs(struct wsc_attr_builder *builder,
const uint8_t authorized_macs[static 30])
{
int count;
for (count = 1; count < 5; count++)
if (util_mem_is_zero(authorized_macs + count * 6, 6))
break;
wsc_attr_builder_put_u8(builder, WSC_WFA_EXTENSION_AUTHORIZED_MACS);
wsc_attr_builder_put_u8(builder, count * 6);
wsc_attr_builder_put_bytes(builder, authorized_macs, count * 6);
}
uint8_t *wsc_build_credential(const struct wsc_credential *in, size_t *out_len)
{
struct wsc_attr_builder *builder;
@ -2204,21 +2218,9 @@ uint8_t *wsc_build_probe_response(
START_WFA_VENDOR_EXTENSION();
if (!util_mem_is_zero(probe_response->authorized_macs, 30)) {
int count;
for (count = 1; count < 5; count++)
if (util_mem_is_zero(probe_response->authorized_macs +
count * 6, 30 - count * 6))
break;
wsc_attr_builder_put_u8(builder,
WSC_WFA_EXTENSION_AUTHORIZED_MACS);
wsc_attr_builder_put_u8(builder, count * 6);
wsc_attr_builder_put_bytes(builder,
probe_response->authorized_macs,
count * 6);
}
if (!util_mem_is_zero(probe_response->authorized_macs, 6))
wfa_build_authorized_macs(builder,
probe_response->authorized_macs);
if (probe_response->reg_config_methods) {
wsc_attr_builder_put_u8(builder,