server which has been found to loop queries back to this dnsmasq instance, and
it therefore not being used.
+AddDhcpLease
+------------
+
+Returns nothing. Adds or updates a DHCP or DHCPv6 lease to the internal lease
+database, as if a client requested and obtained a lease.
+
+If a lease for the IPv4 or IPv6 address already exist, it is overwritten.
+
+Note that this function will trigger the DhcpLeaseAdded or DhcpLeaseUpdated
+D-Bus signal and will run the configured DHCP lease script accordingly.
+
+This function takes many arguments which are the lease parameters:
+- A string with the textual representation of the IPv4 or IPv6 address of the
+ client.
+
+ Examples:
+ "192.168.1.115"
+ "1003:1234:abcd::1%eth0"
+ "2001:db8:abcd::1"
+
+- A string representing the hardware address of the client, using the same
+ format as the one used in the lease database.
+
+ Examples:
+
+ "00:23:45:67:89:ab"
+ "06-00:20:e0:3b:13:af" (token ring)
+
+- The hostname of the client, as an array of bytes (so there is no problem
+ with non-ASCII character encoding). May be empty.
+
+ Example (for "hostname.or.fqdn"):
+ [104, 111, 115, 116, 110, 97, 109, 101, 46, 111, 114, 46, 102, 113, 100, 110]
+
+- The client identifier (IPv4) or DUID (IPv6) as an array of bytes. May be
+ empty.
+
+ Examples:
+
+ DHCPv6 DUID:
+ [0, 3, 0, 1, 0, 35, 69, 103, 137, 171]
+ DHCPv4 client identifier:
+ [255, 12, 34, 56, 78, 0, 1, 0, 1, 29, 9, 99, 190, 35, 69, 103, 137, 171]
+
+- The duration of the lease, in seconds. If the lease is updated, then
+ the duration replaces the previous duration.
+
+ Example:
+
+ 7200
+
+- The IAID (Identity association identifier) of the DHCPv6 lease, as a network
+ byte-order unsigned integer. For DHCPv4 leases, this must be set to 0.
+
+ Example (for IPv6):
+
+ 203569230
+
+- A boolean which, if true, indicates that the DHCPv6 lease is for a temporary
+ address (IA_TA). If false, the DHCPv6 lease is for a non-temporary address
+ (IA_NA). For DHCPv4 leases, this must be set to false.
+
+RemoveDhcpLease
+---------------
+
+Returns nothing. Removes a DHCP or DHCPv6 lease to the internal lease
+database, as if a client sent a release message to abandon a lease.
+
+This function takes only one parameter: the text representation of the
+IPv4 or IPv6 address of the lease to remove.
+
+Note that this function will trigger the DhcpLeaseRemoved signal and the
+configured DHCP lease script will be run with the "del" action.
+
2. SIGNALS
" <arg name=\"hwaddr\" type=\"s\"/>\n"
" <arg name=\"hostname\" type=\"s\"/>\n"
" </signal>\n"
+#ifdef HAVE_DHCP
+" <method name=\"AddDhcpLease\">\n"
+" <arg name=\"ipaddr\" type=\"s\"/>\n"
+" <arg name=\"hwaddr\" type=\"s\"/>\n"
+" <arg name=\"hostname\" type=\"ay\"/>\n"
+" <arg name=\"clid\" type=\"ay\"/>\n"
+" <arg name=\"lease_duration\" type=\"u\"/>\n"
+" <arg name=\"ia_id\" type=\"u\"/>\n"
+" <arg name=\"is_temporary\" type=\"b\"/>\n"
+" </method>\n"
+" <method name=\"DeleteDhcpLease\">\n"
+" <arg name=\"ipaddr\" type=\"s\"/>\n"
+" <arg name=\"success\" type=\"b\" direction=\"out\"/>\n"
+" </method>\n"
+#endif
" </interface>\n"
"</node>\n";
return NULL;
}
+#ifdef HAVE_DHCP
+static DBusMessage *dbus_add_lease(DBusMessage* message)
+{
+ struct dhcp_lease *lease;
+ const char *ipaddr, *hwaddr, *hostname, *tmp;
+ const unsigned char* clid;
+ int clid_len, hostname_len, hw_len, hw_type;
+ dbus_uint32_t expires, ia_id;
+ dbus_bool_t is_temporary;
+ struct all_addr addr;
+ time_t now = dnsmasq_time();
+ unsigned char dhcp_chaddr[DHCP_CHADDR_MAX];
+
+ DBusMessageIter iter, array_iter;
+ if (!dbus_message_iter_init(message, &iter))
+ return dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS,
+ "Failed to initialize dbus message iter");
+
+ if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
+ return dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS,
+ "Expected string as first argument");
+
+ dbus_message_iter_get_basic(&iter, &ipaddr);
+ dbus_message_iter_next(&iter);
+
+ if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
+ return dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS,
+ "Expected string as second argument");
+
+ dbus_message_iter_get_basic(&iter, &hwaddr);
+ dbus_message_iter_next(&iter);
+
+ if ((dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY) ||
+ (dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_BYTE))
+ return dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS,
+ "Expected byte array as third argument");
+
+ dbus_message_iter_recurse(&iter, &array_iter);
+ dbus_message_iter_get_fixed_array(&array_iter, &hostname, &hostname_len);
+ tmp = memchr(hostname, '\0', hostname_len);
+ if (tmp)
+ {
+ if (tmp == &hostname[hostname_len - 1])
+ hostname_len--;
+ else
+ return dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS,
+ "Hostname contains an embedded NUL character");
+ }
+ dbus_message_iter_next(&iter);
+
+ if ((dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY) ||
+ (dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_BYTE))
+ return dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS,
+ "Expected byte array as fourth argument");
+
+ dbus_message_iter_recurse(&iter, &array_iter);
+ dbus_message_iter_get_fixed_array(&array_iter, &clid, &clid_len);
+ dbus_message_iter_next(&iter);
+
+ if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_UINT32)
+ return dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS,
+ "Expected uint32 as fifth argument");
+
+ dbus_message_iter_get_basic(&iter, &expires);
+ dbus_message_iter_next(&iter);
+
+ if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_UINT32)
+ return dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS,
+ "Expected uint32 as sixth argument");
+
+ dbus_message_iter_get_basic(&iter, &ia_id);
+ dbus_message_iter_next(&iter);
+
+ if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_BOOLEAN)
+ return dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS,
+ "Expected uint32 as sixth argument");
+
+ dbus_message_iter_get_basic(&iter, &is_temporary);
+
+ if (inet_pton(AF_INET, ipaddr, &addr.addr.addr4))
+ {
+ if (ia_id != 0 || is_temporary)
+ return dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS,
+ "ia_id and is_temporary must be zero for IPv4 lease");
+
+ if (!(lease = lease_find_by_addr(addr.addr.addr4)))
+ lease = lease4_allocate(addr.addr.addr4);
+ }
+#ifdef HAVE_DHCP6
+ else if (inet_pton(AF_INET6, ipaddr, &addr.addr.addr6))
+ {
+ if (!(lease = lease6_find_by_addr(&addr.addr.addr6, 128, 0)))
+ lease = lease6_allocate(&addr.addr.addr6,
+ is_temporary ? LEASE_TA : LEASE_NA);
+ lease_set_iaid(lease, ia_id);
+ }
+#endif
+ else
+ return dbus_message_new_error_printf(message, DBUS_ERROR_INVALID_ARGS,
+ "Invalid IP address '%s'", ipaddr);
+
+ hw_len = parse_hex((char*)hwaddr, dhcp_chaddr, DHCP_CHADDR_MAX, NULL,
+ &hw_type);
+ if (hw_type == 0 && hw_len != 0)
+ hw_type = ARPHRD_ETHER;
+
+ lease_set_hwaddr(lease, dhcp_chaddr, clid, hw_len, hw_type,
+ clid_len, now, 0);
+ lease_set_expires(lease, expires, now);
+ if (hostname_len != 0)
+ lease_set_hostname(lease, hostname, 0, get_domain(lease->addr), NULL);
+
+ lease_update_file(now);
+ lease_update_dns(0);
+
+ return NULL;
+}
+
+static DBusMessage *dbus_del_lease(DBusMessage* message)
+{
+ struct dhcp_lease *lease;
+ DBusMessageIter iter;
+ const char *ipaddr;
+ DBusMessage *reply;
+ struct all_addr addr;
+ dbus_bool_t ret = 1;
+ time_t now = dnsmasq_time();
+
+ if (!dbus_message_iter_init(message, &iter))
+ return dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS,
+ "Failed to initialize dbus message iter");
+
+ if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
+ return dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS,
+ "Expected string as first argument");
+
+ dbus_message_iter_get_basic(&iter, &ipaddr);
+
+ if (inet_pton(AF_INET, ipaddr, &addr.addr.addr4))
+ lease = lease_find_by_addr(addr.addr.addr4);
+#ifdef HAVE_DHCP6
+ else if (inet_pton(AF_INET6, ipaddr, &addr.addr.addr6))
+ lease = lease6_find_by_addr(&addr.addr.addr6, 128, 0);
+#endif
+ else
+ return dbus_message_new_error_printf(message, DBUS_ERROR_INVALID_ARGS,
+ "Invalid IP address '%s'", ipaddr);
+
+ if (lease)
+ {
+ lease_prune(lease, now);
+ lease_update_file(now);
+ lease_update_dns(0);
+ }
+ else
+ ret = 0;
+
+ if ((reply = dbus_message_new_method_return(message)))
+ dbus_message_append_args(reply, DBUS_TYPE_BOOLEAN, &ret,
+ DBUS_TYPE_INVALID);
+
+
+ return reply;
+}
+#endif
+
DBusHandlerResult message_handler(DBusConnection *connection,
DBusMessage *message,
void *user_data)
{
reply = dbus_set_bool(message, OPT_BOGUSPRIV, "bogus-priv");
}
+#ifdef HAVE_DHCP
+ else if (strcmp(method, "AddDhcpLease") == 0)
+ {
+ reply = dbus_add_lease(message);
+ }
+ else if (strcmp(method, "DeleteDhcpLease") == 0)
+ {
+ reply = dbus_del_lease(message);
+ }
+#endif
else if (strcmp(method, "ClearCache") == 0)
clear_cache = 1;
else