udhcpc: check read of option length byte to be within packet
function old new delta
udhcp_get_option 215 220 +5
udhcp_run_script 802 803 +1
Signed-off-by: Brian Foley <bpfoley@google.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/networking/udhcp/dhcpc.c b/networking/udhcp/dhcpc.c
index bef7327..1c10511 100644
--- a/networking/udhcp/dhcpc.c
+++ b/networking/udhcp/dhcpc.c
@@ -450,7 +450,7 @@
temp = udhcp_get_option(packet, i);
if (temp) {
if (i == DHCP_OPTION_OVERLOAD)
- overload = *temp;
+ overload |= *temp;
else if (i == DHCP_SUBNET)
envc++; /* for $mask */
envc++;
@@ -476,7 +476,7 @@
* uint16_t secs; // elapsed since client began acquisition/renewal
* uint16_t flags; // only one flag so far: bcast. Never set by server
* uint32_t ciaddr; // client IP (usually == yiaddr. can it be different
- * // if during renew server wants to give us differn IP?)
+ * // if during renew server wants to give us different IP?)
* uint32_t gateway_nip; // relay agent IP address
* uint8_t chaddr[16]; // link-layer client hardware address (MAC)
* TODO: export gateway_nip as $giaddr?