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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-09 13:14:35 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-09 13:14:35 +0000
commit9b8a97db9ec4b795e29e72289005fbc58484ebeb (patch)
treee24ca2d68215e57b4759fe5c032629821eabb250 /ip/ipaddrlabel.c
parentInitial commit. (diff)
downloadiproute2-9b8a97db9ec4b795e29e72289005fbc58484ebeb.tar.xz
iproute2-9b8a97db9ec4b795e29e72289005fbc58484ebeb.zip
Adding upstream version 6.8.0.upstream/6.8.0
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'ip/ipaddrlabel.c')
-rw-r--r--ip/ipaddrlabel.c260
1 files changed, 260 insertions, 0 deletions
diff --git a/ip/ipaddrlabel.c b/ip/ipaddrlabel.c
new file mode 100644
index 0000000..b045827
--- /dev/null
+++ b/ip/ipaddrlabel.c
@@ -0,0 +1,260 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * ipaddrlabel.c "ip addrlabel"
+ *
+ * Copyright (C)2007 USAGI/WIDE Project
+ *
+ * Based on iprule.c.
+ *
+ * Authors: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netinet/ip.h>
+#include <arpa/inet.h>
+#include <string.h>
+#include <linux/types.h>
+#include <linux/if_addrlabel.h>
+
+#include "rt_names.h"
+#include "utils.h"
+#include "ip_common.h"
+#include "json_print.h"
+
+#define IFAL_RTA(r) ((struct rtattr *)(((char *)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrlblmsg))))
+#define IFAL_PAYLOAD(n) NLMSG_PAYLOAD(n, sizeof(struct ifaddrlblmsg))
+
+extern struct rtnl_handle rth;
+
+static void usage(void) __attribute__((noreturn));
+
+static void usage(void)
+{
+ fprintf(stderr,
+ "Usage: ip addrlabel { add | del } prefix PREFIX [ dev DEV ] [ label LABEL ]\n"
+ " ip addrlabel [ list | flush | help ]\n");
+ exit(-1);
+}
+
+int print_addrlabel(struct nlmsghdr *n, void *arg)
+{
+ struct ifaddrlblmsg *ifal = NLMSG_DATA(n);
+ int len = n->nlmsg_len;
+ struct rtattr *tb[IFAL_MAX+1];
+
+ if (n->nlmsg_type != RTM_NEWADDRLABEL && n->nlmsg_type != RTM_DELADDRLABEL)
+ return 0;
+
+ len -= NLMSG_LENGTH(sizeof(*ifal));
+ if (len < 0)
+ return -1;
+
+ parse_rtattr(tb, IFAL_MAX, IFAL_RTA(ifal), len);
+
+ open_json_object(NULL);
+ if (n->nlmsg_type == RTM_DELADDRLABEL)
+ print_bool(PRINT_ANY, "deleted", "Deleted ", true);
+
+ if (tb[IFAL_ADDRESS]) {
+ const char *host
+ = format_host_rta(ifal->ifal_family,
+ tb[IFAL_ADDRESS]);
+
+ print_string(PRINT_FP, NULL, "prefix ", NULL);
+ print_color_string(PRINT_ANY,
+ ifa_family_color(ifal->ifal_family),
+ "address", "%s", host);
+
+ print_uint(PRINT_ANY, "prefixlen", "/%u ",
+ ifal->ifal_prefixlen);
+ }
+
+ if (ifal->ifal_index) {
+ print_string(PRINT_FP, NULL, "dev ", NULL);
+ print_color_string(PRINT_ANY, COLOR_IFNAME,
+ "ifname", "%s ",
+ ll_index_to_name(ifal->ifal_index));
+ }
+
+ if (tb[IFAL_LABEL] && RTA_PAYLOAD(tb[IFAL_LABEL]) == sizeof(uint32_t)) {
+ uint32_t label = rta_getattr_u32(tb[IFAL_LABEL]);
+
+ print_uint(PRINT_ANY,
+ "label", "label %u ", label);
+ }
+ print_string(PRINT_FP, NULL, "\n", "");
+ close_json_object();
+
+ return 0;
+}
+
+static int ipaddrlabel_list(int argc, char **argv)
+{
+ int af = preferred_family;
+
+ if (af == AF_UNSPEC)
+ af = AF_INET6;
+
+ if (argc > 0) {
+ fprintf(stderr, "\"ip addrlabel show\" does not take any arguments.\n");
+ return -1;
+ }
+
+ if (rtnl_addrlbldump_req(&rth, af) < 0) {
+ perror("Cannot send dump request");
+ return 1;
+ }
+
+ new_json_obj(json);
+ if (rtnl_dump_filter(&rth, print_addrlabel, stdout) < 0) {
+ fprintf(stderr, "Dump terminated\n");
+ delete_json_obj();
+ return 1;
+ }
+ delete_json_obj();
+
+ return 0;
+}
+
+
+static int ipaddrlabel_modify(int cmd, int argc, char **argv)
+{
+ struct {
+ struct nlmsghdr n;
+ struct ifaddrlblmsg ifal;
+ char buf[1024];
+ } req = {
+ .n.nlmsg_type = cmd,
+ .n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrlblmsg)),
+ .n.nlmsg_flags = NLM_F_REQUEST,
+ .ifal.ifal_family = preferred_family,
+ };
+
+ inet_prefix prefix = {};
+ uint32_t label = 0xffffffffUL;
+ char *p = NULL;
+ char *l = NULL;
+
+ if (cmd == RTM_NEWADDRLABEL) {
+ req.n.nlmsg_flags |= NLM_F_CREATE|NLM_F_EXCL;
+ }
+
+ while (argc > 0) {
+ if (strcmp(*argv, "prefix") == 0) {
+ NEXT_ARG();
+ p = *argv;
+ get_prefix(&prefix, *argv, preferred_family);
+ } else if (strcmp(*argv, "dev") == 0) {
+ NEXT_ARG();
+ if ((req.ifal.ifal_index = ll_name_to_index(*argv)) == 0)
+ invarg("dev is invalid\n", *argv);
+ } else if (strcmp(*argv, "label") == 0) {
+ NEXT_ARG();
+ l = *argv;
+ if (get_u32(&label, *argv, 0) || label == 0xffffffffUL)
+ invarg("label is invalid\n", *argv);
+ }
+ argc--;
+ argv++;
+ }
+ if (p == NULL) {
+ fprintf(stderr, "Not enough information: \"prefix\" argument is required.\n");
+ return -1;
+ }
+ if (l == NULL) {
+ fprintf(stderr, "Not enough information: \"label\" argument is required.\n");
+ return -1;
+ }
+ addattr32(&req.n, sizeof(req), IFAL_LABEL, label);
+ addattr_l(&req.n, sizeof(req), IFAL_ADDRESS, &prefix.data, prefix.bytelen);
+ req.ifal.ifal_prefixlen = prefix.bitlen;
+
+ if (req.ifal.ifal_family == AF_UNSPEC)
+ req.ifal.ifal_family = AF_INET6;
+
+ if (rtnl_talk(&rth, &req.n, NULL) < 0)
+ return -2;
+
+ return 0;
+}
+
+
+static int flush_addrlabel(struct nlmsghdr *n, void *arg)
+{
+ struct rtnl_handle rth2;
+ struct rtmsg *r = NLMSG_DATA(n);
+ int len = n->nlmsg_len;
+ struct rtattr *tb[IFAL_MAX+1];
+
+ len -= NLMSG_LENGTH(sizeof(*r));
+ if (len < 0)
+ return -1;
+
+ parse_rtattr(tb, IFAL_MAX, RTM_RTA(r), len);
+
+ if (tb[IFAL_ADDRESS]) {
+ n->nlmsg_type = RTM_DELADDRLABEL;
+ n->nlmsg_flags = NLM_F_REQUEST;
+
+ if (rtnl_open(&rth2, 0) < 0)
+ return -1;
+
+ if (rtnl_talk(&rth2, n, NULL) < 0)
+ return -2;
+
+ rtnl_close(&rth2);
+ }
+
+ return 0;
+}
+
+static int ipaddrlabel_flush(int argc, char **argv)
+{
+ int af = preferred_family;
+
+ if (af == AF_UNSPEC)
+ af = AF_INET6;
+
+ if (argc > 0) {
+ fprintf(stderr, "\"ip addrlabel flush\" does not allow extra arguments\n");
+ return -1;
+ }
+
+ if (rtnl_addrlbldump_req(&rth, af) < 0) {
+ perror("Cannot send dump request");
+ return -1;
+ }
+
+ if (rtnl_dump_filter(&rth, flush_addrlabel, NULL) < 0) {
+ fprintf(stderr, "Flush terminated\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+int do_ipaddrlabel(int argc, char **argv)
+{
+ if (argc < 1) {
+ return ipaddrlabel_list(0, NULL);
+ } else if (matches(argv[0], "list") == 0 ||
+ matches(argv[0], "lst") == 0 ||
+ matches(argv[0], "show") == 0) {
+ return ipaddrlabel_list(argc-1, argv+1);
+ } else if (matches(argv[0], "add") == 0) {
+ return ipaddrlabel_modify(RTM_NEWADDRLABEL, argc-1, argv+1);
+ } else if (matches(argv[0], "delete") == 0) {
+ return ipaddrlabel_modify(RTM_DELADDRLABEL, argc-1, argv+1);
+ } else if (matches(argv[0], "flush") == 0) {
+ return ipaddrlabel_flush(argc-1, argv+1);
+ } else if (matches(argv[0], "help") == 0)
+ usage();
+
+ fprintf(stderr, "Command \"%s\" is unknown, try \"ip addrlabel help\".\n", *argv);
+ exit(-1);
+}