This commit was generated by cvs2svn to compensate for changes in r786,

[libnl.git] / src / nl-route-get.c

diff --git a/src/nl-route-get.c b/src/nl-route-get.c
new file mode 100644 (file)
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;
+}