diff options
Diffstat (limited to 'accel-pppd')
| -rw-r--r-- | accel-pppd/ctrl/ipoe/dhcpv4_options.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/accel-pppd/ctrl/ipoe/dhcpv4_options.c b/accel-pppd/ctrl/ipoe/dhcpv4_options.c index bffcfa5c..57999995 100644 --- a/accel-pppd/ctrl/ipoe/dhcpv4_options.c +++ b/accel-pppd/ctrl/ipoe/dhcpv4_options.c @@ -265,7 +265,8 @@ static void print_classless_route(const struct dhcpv4_option *opt, int elem_size { const uint8_t *ptr = opt->data; const uint8_t *endptr = ptr + opt->len; - int mask, i, mask1 = 0; + int mask; + uint32_t mask1; uint32_t ip; uint32_t gw; @@ -274,9 +275,11 @@ static void print_classless_route(const struct dhcpv4_option *opt, int elem_size print(","); mask = *ptr++; + if (mask > 32) + return; + ip = ntohl(*(uint32_t *)ptr); - for (i = 0; i < mask; i++) - mask1 |= (1 << (32 - i)); + mask1 = mask ? UINT32_MAX << (32 - mask) : 0; ip &= mask1; if (mask <= 8) ptr++; |