85 lines
3.3 KiB
Diff
85 lines
3.3 KiB
Diff
From c68370ac5678b1052592877ede04886d5f62d2dc Mon Sep 17 00:00:00 2001
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From: Scott Little <scott.little@windriver.com>
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Date: Tue, 18 Oct 2016 13:07:56 -0400
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Subject: [PATCH 1/4] WRS: Patch22:
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dnsmasq-update-ipv6-leases-from-config.patch
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---
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src/lease.c | 53 +++++++++++++++++++++++++++++++++++++++++++----------
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1 file changed, 43 insertions(+), 10 deletions(-)
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diff --git a/src/lease.c b/src/lease.c
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index e5fe8a6..ffa683a 100644
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--- a/src/lease.c
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+++ b/src/lease.c
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@@ -179,6 +179,18 @@ void lease_init(time_t now)
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dns_dirty = 1;
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}
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+static int lease_match_config_addr(struct dhcp_lease *lease, struct dhcp_config *config)
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+{
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+ if (!(lease->flags & (LEASE_TA | LEASE_NA)) && (config->flags & CONFIG_ADDR))
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+ return (lease->addr.s_addr == config->addr.s_addr);
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+#ifdef HAVE_DHCP6
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+ else if ((lease->flags & (LEASE_TA | LEASE_NA)) && (config->flags & CONFIG_ADDR6))
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+ return IN6_ARE_ADDR_EQUAL(&config->addr6, &lease->addr6);
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+#endif
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+ else
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+ return 0;
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+}
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+
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void lease_update_from_configs(void)
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{
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/* changes to the config may change current leases. */
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@@ -187,16 +199,37 @@ void lease_update_from_configs(void)
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struct dhcp_config *config;
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char *name;
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- for (lease = leases; lease; lease = lease->next)
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- if (lease->flags & (LEASE_TA | LEASE_NA))
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- continue;
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- else if ((config = find_config(daemon->dhcp_conf, NULL, lease->clid, lease->clid_len,
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- lease->hwaddr, lease->hwaddr_len, lease->hwaddr_type, NULL)) &&
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- (config->flags & CONFIG_NAME) &&
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- (!(config->flags & CONFIG_ADDR) || config->addr.s_addr == lease->addr.s_addr))
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- lease_set_hostname(lease, config->hostname, 1, get_domain(lease->addr), NULL);
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- else if ((name = host_from_dns(lease->addr)))
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- lease_set_hostname(lease, name, 1, get_domain(lease->addr), NULL); /* updates auth flag only */
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+ for (lease = leases; lease; lease = lease->next) {
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+ if (lease->flags & LEASE_TA)
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+ continue; /* we do not update temporary ipv6 leases */
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+
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+ config = find_config(daemon->dhcp_conf, NULL, lease->clid, lease->clid_len,
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+ (lease->hwaddr_len > 0 ? lease->hwaddr : NULL),
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+ lease->hwaddr_len, lease->hwaddr_type, NULL);
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+ if (config)
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+ {
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+ if ((!(config->flags & (CONFIG_ADDR | CONFIG_ADDR6))) ||
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+ lease_match_config_addr(lease, config))
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+ {
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+ /*
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+ * Either we matched on a config that doesn't have an address in
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+ * which case we'll just use the hostname, or we matched on a
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+ * config that has the same IP address.
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+ */
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+ if (!(lease->flags & (LEASE_TA | LEASE_NA)))
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+ lease_set_hostname(lease, config->hostname, 1, get_domain(lease->addr), NULL);
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+#ifdef HAVE_DHCP6
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+ else
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+ lease_set_hostname(lease, config->hostname, 1, get_domain6(&lease->addr6), NULL);
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+#endif
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+ continue; /* lease updated; move on to next lease */
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+ }
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+ }
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+
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+ /* attempt to find a matching DNS cache entry for an IPv4 entry */
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+ if (!(lease->flags & (LEASE_TA | LEASE_NA)) && (name = host_from_dns(lease->addr)))
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+ lease_set_hostname(lease, name, 1, get_domain(lease->addr), NULL); /* updates auth flag only */
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+ }
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}
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static void ourprintf(int *errp, char *format, ...)
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--
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1.9.1
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