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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
7b713b81 | 2 | |
7b713b81 | 3 | #include <errno.h> |
07630cea LP |
4 | #include <net/if.h> |
5 | #include <stdlib.h> | |
7b713b81 | 6 | #include <unistd.h> |
7b713b81 | 7 | #include <linux/veth.h> |
7b713b81 TG |
8 | |
9 | #include "sd-event.h" | |
7b713b81 | 10 | #include "sd-ipv4ll.h" |
07630cea | 11 | #include "sd-netlink.h" |
7b713b81 | 12 | |
b5efdb8a | 13 | #include "alloc-util.h" |
7b713b81 | 14 | #include "in-addr-util.h" |
6bedfcbb | 15 | #include "parse-util.h" |
07630cea | 16 | #include "string-util.h" |
6d7c4033 | 17 | #include "tests.h" |
7b713b81 TG |
18 | |
19 | static void ll_handler(sd_ipv4ll *ll, int event, void *userdata) { | |
7b713b81 TG |
20 | assert_se(ll); |
21 | ||
84dbb3fd ZJS |
22 | struct in_addr addr; |
23 | const char *pretty = sd_ipv4ll_get_address(ll, &addr) >= 0 ? IN4_ADDR_TO_STRING(&addr) : NULL; | |
7b713b81 TG |
24 | |
25 | switch (event) { | |
be19c5b5 | 26 | case SD_IPV4LL_EVENT_BIND: |
84dbb3fd | 27 | log_info("bound %s", strna(pretty)); |
7b713b81 | 28 | break; |
be19c5b5 | 29 | case SD_IPV4LL_EVENT_CONFLICT: |
84dbb3fd | 30 | log_info("conflict on %s", strna(pretty)); |
7b713b81 | 31 | break; |
be19c5b5 | 32 | case SD_IPV4LL_EVENT_STOP: |
84dbb3fd | 33 | log_error("the client was stopped with address %s", strna(pretty)); |
7b713b81 TG |
34 | break; |
35 | default: | |
04499a70 | 36 | assert_not_reached(); |
7b713b81 TG |
37 | } |
38 | } | |
39 | ||
59c27231 | 40 | static int client_run(int ifindex, const char *seed_str, const struct in_addr *start_address, const struct ether_addr *ha, sd_event *e) { |
7b713b81 TG |
41 | sd_ipv4ll *ll; |
42 | ||
43 | assert_se(sd_ipv4ll_new(&ll) >= 0); | |
44 | assert_se(sd_ipv4ll_attach_event(ll, e, 0) >= 0); | |
45 | ||
2f8e7633 | 46 | assert_se(sd_ipv4ll_set_ifindex(ll, ifindex) >= 0); |
7b713b81 TG |
47 | assert_se(sd_ipv4ll_set_mac(ll, ha) >= 0); |
48 | assert_se(sd_ipv4ll_set_callback(ll, ll_handler, NULL) >= 0); | |
49 | ||
50 | if (seed_str) { | |
51 | unsigned seed; | |
52 | ||
53 | assert_se(safe_atou(seed_str, &seed) >= 0); | |
54 | ||
55 | assert_se(sd_ipv4ll_set_address_seed(ll, seed) >= 0); | |
56 | } | |
57 | ||
59c27231 AK |
58 | if (start_address && in4_addr_is_set(start_address)) |
59 | assert_se(sd_ipv4ll_set_address(ll, start_address) >= 0); | |
60 | ||
7b713b81 TG |
61 | log_info("starting IPv4LL client"); |
62 | ||
63 | assert_se(sd_ipv4ll_start(ll) >= 0); | |
64 | ||
65 | assert_se(sd_event_loop(e) >= 0); | |
66 | ||
67 | assert_se(!sd_ipv4ll_unref(ll)); | |
68 | ||
69 | return EXIT_SUCCESS; | |
70 | } | |
71 | ||
59c27231 | 72 | static int test_ll(const char *ifname, const char *seed, const struct in_addr *start_address) { |
4afd3348 LP |
73 | _cleanup_(sd_event_unrefp) sd_event *e = NULL; |
74 | _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL; | |
75 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL, *reply = NULL; | |
7b713b81 TG |
76 | struct ether_addr ha; |
77 | int ifindex; | |
78 | ||
79 | assert_se(sd_event_new(&e) >= 0); | |
80 | ||
81 | assert_se(sd_netlink_open(&rtnl) >= 0); | |
82 | assert_se(sd_netlink_attach_event(rtnl, e, 0) >= 0); | |
83 | ||
84 | assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, 0) >= 0); | |
85 | assert_se(sd_netlink_message_append_string(m, IFLA_IFNAME, ifname) >= 0); | |
86 | assert_se(sd_netlink_call(rtnl, m, 0, &reply) >= 0); | |
87 | ||
88 | assert_se(sd_rtnl_message_link_get_ifindex(reply, &ifindex) >= 0); | |
89 | assert_se(sd_netlink_message_read_ether_addr(reply, IFLA_ADDRESS, &ha) >= 0); | |
90 | ||
59c27231 | 91 | client_run(ifindex, seed, start_address, &ha, e); |
7b713b81 TG |
92 | |
93 | return EXIT_SUCCESS; | |
94 | } | |
95 | ||
96 | int main(int argc, char *argv[]) { | |
6d7c4033 | 97 | test_setup_logging(LOG_DEBUG); |
7b713b81 TG |
98 | |
99 | if (argc == 2) | |
59c27231 AK |
100 | return test_ll(argv[1], NULL, NULL); |
101 | else if (argc == 3) { | |
102 | int r; | |
103 | union in_addr_union a; | |
104 | ||
105 | r = in_addr_from_string(AF_INET, argv[2], &a); | |
106 | if (r < 0) | |
107 | return test_ll(argv[1], argv[2], NULL); | |
108 | else | |
109 | return test_ll(argv[1], NULL, &a.in); | |
110 | } else { | |
7b713b81 | 111 | log_error("This program takes one or two arguments.\n" |
59c27231 | 112 | "\t %s <ifname> [<seed>|<start_address>]", program_invocation_short_name); |
7b713b81 TG |
113 | return EXIT_FAILURE; |
114 | } | |
115 | } |