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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 | 12 | static int iw_conn(struct nl80211_state *state, struct nl_cb *cb, |
05514f95 JB |
13 | struct nl_msg *msg, int argc, char **argv, |
14 | enum id_input id) | |
99dde7aa JB |
15 | { |
16 | char *end; | |
51e9bd80 | 17 | unsigned char bssid[6]; |
1e03690e | 18 | int freq; |
99dde7aa JB |
19 | |
20 | if (argc < 1) | |
21 | return 1; | |
22 | ||
23 | /* SSID */ | |
24 | NLA_PUT(msg, NL80211_ATTR_SSID, strlen(argv[0]), argv[0]); | |
25 | argv++; | |
26 | argc--; | |
27 | ||
28 | /* freq */ | |
29 | if (argc) { | |
30 | freq = strtoul(argv[0], &end, 10); | |
31 | if (*end == '\0') { | |
32 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); | |
33 | argv++; | |
34 | argc--; | |
35 | } | |
36 | } | |
37 | ||
38 | /* bssid */ | |
39 | if (argc) { | |
51e9bd80 JB |
40 | if (mac_addr_a2n(bssid, argv[0]) == 0) { |
41 | NLA_PUT(msg, NL80211_ATTR_MAC, 6, bssid); | |
42 | argv++; | |
43 | argc--; | |
44 | } | |
99dde7aa JB |
45 | } |
46 | ||
1e03690e JB |
47 | if (!argc) |
48 | return 0; | |
99dde7aa | 49 | |
1e03690e JB |
50 | if (strcmp(*argv, "key") != 0 && strcmp(*argv, "keys") != 0) |
51 | return 1; | |
ded1f078 | 52 | |
1e03690e JB |
53 | argv++; |
54 | argc--; | |
51e9bd80 | 55 | |
1e03690e | 56 | return parse_keys(msg, argv, argc); |
99dde7aa JB |
57 | nla_put_failure: |
58 | return -ENOSPC; | |
59 | } | |
60 | ||
61 | static int disconnect(struct nl80211_state *state, | |
62 | struct nl_cb *cb, | |
63 | struct nl_msg *msg, | |
05514f95 JB |
64 | int argc, char **argv, |
65 | enum id_input id) | |
99dde7aa JB |
66 | { |
67 | return 0; | |
68 | } | |
69 | TOPLEVEL(disconnect, NULL, | |
70 | NL80211_CMD_DISCONNECT, 0, CIB_NETDEV, disconnect, | |
71 | "Disconnect from the current network."); | |
7fabd346 JB |
72 | |
73 | static int iw_connect(struct nl80211_state *state, struct nl_cb *cb, | |
05514f95 JB |
74 | struct nl_msg *msg, int argc, char **argv, |
75 | enum id_input id) | |
7fabd346 JB |
76 | { |
77 | char **conn_argv, *dev = argv[0]; | |
78 | static const __u32 cmds[] = { | |
79 | NL80211_CMD_CONNECT, | |
80 | }; | |
81 | struct print_event_args printargs = { }; | |
82 | int conn_argc, err; | |
83 | bool wait = false; | |
84 | int i; | |
85 | ||
86 | /* strip "wlan0 connect" */ | |
87 | argc -= 2; | |
88 | argv += 2; | |
89 | ||
90 | /* check -w */ | |
91 | if (argc && strcmp(argv[0], "-w") == 0) { | |
92 | wait = true; | |
93 | argc--; | |
94 | argv++; | |
95 | } | |
96 | ||
97 | conn_argc = 3 + argc; | |
98 | conn_argv = calloc(conn_argc, sizeof(*conn_argv)); | |
99 | if (!conn_argv) | |
100 | return -ENOMEM; | |
ee374e4d JB |
101 | |
102 | err = __prepare_listen_events(state); | |
103 | if (err) | |
104 | return err; | |
105 | ||
7fabd346 | 106 | conn_argv[0] = dev; |
4698bfc2 | 107 | conn_argv[1] = "connect"; |
7fabd346 JB |
108 | conn_argv[2] = "establish"; |
109 | for (i = 0; i < argc; i++) | |
110 | conn_argv[i + 3] = argv[i]; | |
75f4204c | 111 | err = handle_cmd(state, id, conn_argc, conn_argv); |
7fabd346 JB |
112 | free(conn_argv); |
113 | if (err) | |
114 | return err; | |
115 | ||
116 | if (!wait) | |
117 | return 0; | |
118 | ||
119 | /* | |
120 | * WARNING: DO NOT COPY THIS CODE INTO YOUR APPLICATION | |
121 | * | |
ee374e4d | 122 | * This code has a bug: |
7fabd346 | 123 | * |
ee374e4d JB |
124 | * It is possible for a connect result message from another |
125 | * connect attempt to be processed here first, because we | |
126 | * start listening to the multicast group before starting | |
127 | * our own connect request, which may succeed but we get a | |
128 | * fail message from a previous attempt that raced with us, | |
129 | * or similar. | |
7fabd346 JB |
130 | * |
131 | * The only proper way to fix this would be to listen to events | |
132 | * before sending the command, and for the kernel to send the | |
ee374e4d JB |
133 | * connect request or a cookie along with the event, so that you |
134 | * can match up whether the connect _you_ requested was finished | |
135 | * or aborted. | |
7fabd346 JB |
136 | * |
137 | * Alas, the kernel doesn't do that (yet). | |
138 | */ | |
139 | ||
ee374e4d | 140 | __do_listen_events(state, ARRAY_SIZE(cmds), cmds, &printargs); |
7fabd346 JB |
141 | return 0; |
142 | } | |
143 | TOPLEVEL(connect, "[-w] <SSID> [<freq in MHz>] [<bssid>] [key 0:abcde d:1:6162636465]", | |
144 | 0, 0, CIB_NETDEV, iw_connect, | |
145 | "Join the network with the given SSID (and frequency, BSSID).\n" | |
146 | "With -w, wait for the connect to finish or fail."); | |
4698bfc2 | 147 | HIDDEN(connect, establish, "", NL80211_CMD_CONNECT, 0, CIB_NETDEV, iw_conn); |