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Remove extact-MAC address from DUID code.

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This commit is contained in:
Simon Kelley
2012-02-15 10:41:03 +00:00
parent caa94380ac
commit 60ac5af682
1 changed files with 7 additions and 53 deletions
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56
src/dhcp6.c
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@@ -408,43 +408,17 @@ struct dhcp_config *find_config6(struct dhcp_config *configs,
unsigned char *duid, int duid_len,
char *hostname)
{
int count, new;
struct dhcp_config *config;
struct hwaddr_config *conf_addr;
unsigned char *hwaddr = NULL;
int duid_type, hw_len = 0, hw_type = 0;
if (duid)
{
for (config = configs; config; config = config->next)
if (config->flags & CONFIG_CLID)
{
if (config->clid_len == duid_len &&
memcmp(config->clid, duid, duid_len) == 0 &&
is_addr_in_context6(context, config))
return config;
}
/* DHCPv6 doesn't deal in MAC addresses per-se, but some DUIDs do include
MAC addresses, so we try and parse them out here. Not that there is only one
DUID per host and it's created using any one of the MACs, so this is no
good no good for multihomed hosts. */
hwaddr = duid;
GETSHORT(duid_type, hwaddr);
if (duid_type == 1 || duid_type == 3)
for (config = configs; config; config = config->next)
if (config->flags & CONFIG_CLID)
{
GETSHORT(hw_type, hwaddr);
if (duid_type == 1)
hwaddr += 4; /* skip time */
hw_len = duid_len - 8;
}
if (hwaddr)
for (config = configs; config; config = config->next)
if (config_has_mac(config, hwaddr, hw_len, hw_type) &&
if (config->clid_len == duid_len &&
memcmp(config->clid, duid, duid_len) == 0 &&
is_addr_in_context6(context, config))
return config;
}
}
if (hostname && context)
for (config = configs; config; config = config->next)
@@ -453,26 +427,6 @@ struct dhcp_config *find_config6(struct dhcp_config *configs,
is_addr_in_context6(context, config))
return config;
/* use match with fewest wildcard octets */
if (hwaddr)
{
struct dhcp_config *candidate;
for (candidate = NULL, count = 0, config = configs; config; config = config->next)
if (is_addr_in_context6(context, config))
for (conf_addr = config->hwaddr; conf_addr; conf_addr = conf_addr->next)
if (conf_addr->wildcard_mask != 0 &&
conf_addr->hwaddr_len == hw_len &&
(conf_addr->hwaddr_type == hw_type || conf_addr->hwaddr_type == 0) &&
(new = memcmp_masked(conf_addr->hwaddr, hwaddr, hw_len, conf_addr->wildcard_mask)) > count)
{
count = new;
candidate = config;
}
return candidate;
}
return NULL;
}