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99dde7aa JB |
1 | #include <errno.h> |
2 | ||
3 | #include <netlink/genl/genl.h> | |
4 | #include <netlink/genl/family.h> | |
5 | #include <netlink/genl/ctrl.h> | |
6 | #include <netlink/msg.h> | |
7 | #include <netlink/attr.h> | |
8 | ||
9 | #include "nl80211.h" | |
10 | #include "iw.h" | |
11 | ||
7fabd346 JB |
12 | static int iw_conn(struct nl80211_state *state, struct nl_cb *cb, |
13 | struct nl_msg *msg, int argc, char **argv) | |
99dde7aa JB |
14 | { |
15 | char *end; | |
51e9bd80 | 16 | unsigned char bssid[6]; |
1e03690e | 17 | int freq; |
99dde7aa JB |
18 | |
19 | if (argc < 1) | |
20 | return 1; | |
21 | ||
22 | /* SSID */ | |
23 | NLA_PUT(msg, NL80211_ATTR_SSID, strlen(argv[0]), argv[0]); | |
24 | argv++; | |
25 | argc--; | |
26 | ||
27 | /* freq */ | |
28 | if (argc) { | |
29 | freq = strtoul(argv[0], &end, 10); | |
30 | if (*end == '\0') { | |
31 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); | |
32 | argv++; | |
33 | argc--; | |
34 | } | |
35 | } | |
36 | ||
37 | /* bssid */ | |
38 | if (argc) { | |
51e9bd80 JB |
39 | if (mac_addr_a2n(bssid, argv[0]) == 0) { |
40 | NLA_PUT(msg, NL80211_ATTR_MAC, 6, bssid); | |
41 | argv++; | |
42 | argc--; | |
43 | } | |
99dde7aa JB |
44 | } |
45 | ||
1e03690e JB |
46 | if (!argc) |
47 | return 0; | |
99dde7aa | 48 | |
1e03690e JB |
49 | if (strcmp(*argv, "key") != 0 && strcmp(*argv, "keys") != 0) |
50 | return 1; | |
ded1f078 | 51 | |
1e03690e JB |
52 | argv++; |
53 | argc--; | |
51e9bd80 | 54 | |
1e03690e | 55 | return parse_keys(msg, argv, argc); |
99dde7aa JB |
56 | nla_put_failure: |
57 | return -ENOSPC; | |
58 | } | |
59 | ||
60 | static int disconnect(struct nl80211_state *state, | |
61 | struct nl_cb *cb, | |
62 | struct nl_msg *msg, | |
63 | int argc, char **argv) | |
64 | { | |
65 | return 0; | |
66 | } | |
67 | TOPLEVEL(disconnect, NULL, | |
68 | NL80211_CMD_DISCONNECT, 0, CIB_NETDEV, disconnect, | |
69 | "Disconnect from the current network."); | |
7fabd346 JB |
70 | |
71 | static int iw_connect(struct nl80211_state *state, struct nl_cb *cb, | |
72 | struct nl_msg *msg, int argc, char **argv) | |
73 | { | |
74 | char **conn_argv, *dev = argv[0]; | |
75 | static const __u32 cmds[] = { | |
76 | NL80211_CMD_CONNECT, | |
77 | }; | |
78 | struct print_event_args printargs = { }; | |
79 | int conn_argc, err; | |
80 | bool wait = false; | |
81 | int i; | |
82 | ||
83 | /* strip "wlan0 connect" */ | |
84 | argc -= 2; | |
85 | argv += 2; | |
86 | ||
87 | /* check -w */ | |
88 | if (argc && strcmp(argv[0], "-w") == 0) { | |
89 | wait = true; | |
90 | argc--; | |
91 | argv++; | |
92 | } | |
93 | ||
94 | conn_argc = 3 + argc; | |
95 | conn_argv = calloc(conn_argc, sizeof(*conn_argv)); | |
96 | if (!conn_argv) | |
97 | return -ENOMEM; | |
ee374e4d JB |
98 | |
99 | err = __prepare_listen_events(state); | |
100 | if (err) | |
101 | return err; | |
102 | ||
7fabd346 | 103 | conn_argv[0] = dev; |
4698bfc2 | 104 | conn_argv[1] = "connect"; |
7fabd346 JB |
105 | conn_argv[2] = "establish"; |
106 | for (i = 0; i < argc; i++) | |
107 | conn_argv[i + 3] = argv[i]; | |
108 | err = handle_cmd(state, II_NETDEV, conn_argc, conn_argv); | |
109 | free(conn_argv); | |
110 | if (err) | |
111 | return err; | |
112 | ||
113 | if (!wait) | |
114 | return 0; | |
115 | ||
116 | /* | |
117 | * WARNING: DO NOT COPY THIS CODE INTO YOUR APPLICATION | |
118 | * | |
ee374e4d | 119 | * This code has a bug: |
7fabd346 | 120 | * |
ee374e4d JB |
121 | * It is possible for a connect result message from another |
122 | * connect attempt to be processed here first, because we | |
123 | * start listening to the multicast group before starting | |
124 | * our own connect request, which may succeed but we get a | |
125 | * fail message from a previous attempt that raced with us, | |
126 | * or similar. | |
7fabd346 JB |
127 | * |
128 | * The only proper way to fix this would be to listen to events | |
129 | * before sending the command, and for the kernel to send the | |
ee374e4d JB |
130 | * connect request or a cookie along with the event, so that you |
131 | * can match up whether the connect _you_ requested was finished | |
132 | * or aborted. | |
7fabd346 JB |
133 | * |
134 | * Alas, the kernel doesn't do that (yet). | |
135 | */ | |
136 | ||
ee374e4d | 137 | __do_listen_events(state, ARRAY_SIZE(cmds), cmds, &printargs); |
7fabd346 JB |
138 | return 0; |
139 | } | |
140 | TOPLEVEL(connect, "[-w] <SSID> [<freq in MHz>] [<bssid>] [key 0:abcde d:1:6162636465]", | |
141 | 0, 0, CIB_NETDEV, iw_connect, | |
142 | "Join the network with the given SSID (and frequency, BSSID).\n" | |
143 | "With -w, wait for the connect to finish or fail."); | |
4698bfc2 | 144 | HIDDEN(connect, establish, "", NL80211_CMD_CONNECT, 0, CIB_NETDEV, iw_conn); |