X-Git-Url: http://git.onelab.eu/?p=libnl.git;a=blobdiff_plain;f=src%2Fnl-route-get.c;fp=src%2Fnl-route-get.c;h=b5425bd30a71f10cb37a3b424dbe47dc5b2601d2;hp=0000000000000000000000000000000000000000;hb=4cee2ecb3b8afa0637e6f5fe4c57985a4bc740ff;hpb=2df2fbe518d5a221ce6e3ee88a3fb23fb1b94b27

diff --git a/src/nl-route-get.c b/src/nl-route-get.c
new file mode 100644
index 0000000..b5425bd
--- /dev/null
+++ b/src/nl-route-get.c
@@ -0,0 +1,106 @@
+/*
+ * src/nl-route-get.c     Get Route Attributes
+ *
+ *	This library is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU Lesser General Public
+ *	License as published by the Free Software Foundation version 2.1
+ *	of the License.
+ *
+ * Copyright (c) 2003-2006 Thomas Graf <tgraf@suug.ch>
+ */
+
+#include "utils.h"
+
+static void print_usage(void)
+{
+	printf("Usage: nl-route-get <addr>\n");
+	exit(1);
+}
+
+static int cb(struct nl_msg *msg, void *arg)
+{
+	nl_cache_parse_and_add(arg, msg);
+
+	return 0;
+}
+
+int main(int argc, char *argv[])
+{
+	struct nl_handle *nlh;
+	struct nl_cache *link_cache, *route_cache;
+	struct nl_addr *dst;
+	struct nl_dump_params params = {
+		.dp_fd = stdout,
+		.dp_type = NL_DUMP_BRIEF
+	};
+	int err = 1;
+
+	if (argc < 2 || !strcmp(argv[1], "-h"))
+		print_usage();
+
+	if (nltool_init(argc, argv) < 0)
+		goto errout;
+
+	nlh = nl_handle_alloc_nondefault(nltool_cbset);
+	if (!nlh)
+		goto errout;
+
+	if (nltool_connect(nlh, NETLINK_ROUTE) < 0)
+		goto errout_free_handle;
+
+	link_cache = nltool_alloc_link_cache(nlh);
+	if (!link_cache)
+		goto errout_close;
+
+	dst = nltool_addr_parse(argv[1]);
+	if (!dst)
+		goto errout_link_cache;
+
+	route_cache = nltool_alloc_route_cache(nlh);
+	if (!route_cache)
+		goto errout_addr_put;
+
+	{
+		struct nl_msg *m;
+		struct rtmsg rmsg = {
+			.rtm_family = nl_addr_get_family(dst),
+			.rtm_dst_len = nl_addr_get_prefixlen(dst),
+		};
+
+		m = nlmsg_build_simple(RTM_GETROUTE, 0);
+		nlmsg_append(m, &rmsg, sizeof(rmsg), 1);
+		nla_put_addr(m, RTA_DST, dst);
+
+		if ((err = nl_send_auto_complete(nlh, m)) < 0) {
+			nlmsg_free(m);
+			fprintf(stderr, "%s\n", nl_geterror());
+			goto errout_route_cache;
+		}
+
+		nlmsg_free(m);
+
+		nl_cb_set(nl_handle_get_cb(nlh), NL_CB_VALID, NL_CB_CUSTOM,
+			  cb, route_cache);
+
+		if (nl_recvmsgs_def(nlh) < 0) {
+			fprintf(stderr, "%s\n", nl_geterror());
+			goto errout_route_cache;
+		}
+	}
+
+	nl_cache_dump(route_cache, &params);
+
+	err = 0;
+errout_route_cache:
+	nl_cache_free(route_cache);
+errout_addr_put:
+	nl_addr_put(dst);
+errout_link_cache:
+	nl_cache_free(link_cache);
+errout_close:
+	nl_close(nlh);
+errout_free_handle:
+	nl_handle_destroy(nlh);
+errout:
+	return err;
+}