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Fix problem in DHCPv6 vendorclass/userclass matching code.

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This commit is contained in:
Tanguy Bouzeloc
2013-10-03 11:06:31 +01:00
committed by Simon Kelley
parent 1d1c795601
commit ef1d7425e3
2 changed files with 11 additions and 3 deletions
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11
src/rfc3315.c
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@@ -66,6 +66,10 @@ static void calculate_times(struct dhcp_context *context, unsigned int *min_time
#define opt6_type(opt) (opt6_uint(opt, -4, 2))
#define opt6_ptr(opt, i) ((void *)&(((unsigned char *)(opt))[4+(i)]))
#define opt6_user_vendor_ptr(opt, i) ((void *)&(((unsigned char *)(opt))[2+(i)]))
#define opt6_user_vendor_len(opt) ((int)(opt6_uint(opt, -4, 2)))
#define opt6_user_vendor_next(opt, end) (opt6_next(((void *) opt) - 2, end))
unsigned short dhcp6_reply(struct dhcp_context *context, int interface, char *iface_name,
struct in6_addr *fallback, size_t sz, struct in6_addr *client_addr, time_t now)
@@ -355,9 +359,10 @@ static int dhcp6_no_relay(struct state *state, int msg_type, void *inbuff, size_
offset = 4;
}
for (enc_opt = opt6_ptr(opt, offset); enc_opt; enc_opt = opt6_next(enc_opt, enc_end))
for (i = 0; i <= (opt6_len(enc_opt) - vendor->len); i++)
if (memcmp(vendor->data, opt6_ptr(enc_opt, i), vendor->len) == 0)
/* Note that format if user/vendor classes is different to DHCP options - no option types. */
for (enc_opt = opt6_ptr(opt, offset); enc_opt; enc_opt = opt6_user_vendor_next(enc_opt, enc_end))
for (i = 0; i <= (opt6_user_vendor_len(enc_opt) - vendor->len); i++)
if (memcmp(vendor->data, opt6_user_vendor_ptr(enc_opt, i), vendor->len) == 0)
{
vendor->netid.next = state->tags;
state->tags = &vendor->netid;