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1 | #ifndef _POSIX_SOURCE | |
2 | #define _POSIX_SOURCE | |
3 | #endif | |
4 | #include <errno.h> | |
5 | #include <string.h> | |
6 | #include <strings.h> | |
7 | ||
8 | #include <netlink/genl/genl.h> | |
9 | #include <netlink/genl/family.h> | |
10 | #include <netlink/genl/ctrl.h> | |
11 | #include <netlink/msg.h> | |
12 | #include <netlink/attr.h> | |
13 | ||
14 | #include "nl80211.h" | |
15 | #include "iw.h" | |
16 | ||
17 | SECTION(ibss); | |
18 | ||
19 | static int join_ibss(struct nl80211_state *state, | |
20 | struct nl_msg *msg, | |
21 | int argc, char **argv, | |
22 | enum id_input id) | |
23 | { | |
24 | char *end; | |
25 | unsigned char abssid[6]; | |
26 | unsigned char rates[NL80211_MAX_SUPP_RATES]; | |
27 | int n_rates = 0; | |
28 | char *value = NULL, *sptr = NULL; | |
29 | float rate; | |
30 | int bintval; | |
31 | int i; | |
32 | unsigned long freq; | |
33 | static const struct { | |
34 | const char *name; | |
35 | unsigned int width; | |
36 | int freq1_diff; | |
37 | int chantype; /* for older kernel */ | |
38 | } *chanmode_selected = NULL, chanmode[] = { | |
39 | { .name = "HT20", | |
40 | .width = NL80211_CHAN_WIDTH_20, | |
41 | .freq1_diff = 0, | |
42 | .chantype = NL80211_CHAN_HT20 }, | |
43 | { .name = "HT40+", | |
44 | .width = NL80211_CHAN_WIDTH_40, | |
45 | .freq1_diff = 10, | |
46 | .chantype = NL80211_CHAN_HT40PLUS }, | |
47 | { .name = "HT40-", | |
48 | .width = NL80211_CHAN_WIDTH_40, | |
49 | .freq1_diff = -10, | |
50 | .chantype = NL80211_CHAN_HT40MINUS }, | |
51 | { .name = "NOHT", | |
52 | .width = NL80211_CHAN_WIDTH_20_NOHT, | |
53 | .freq1_diff = 0, | |
54 | .chantype = NL80211_CHAN_NO_HT }, | |
55 | { .name = "5MHZ", | |
56 | .width = NL80211_CHAN_WIDTH_5, | |
57 | .freq1_diff = 0, | |
58 | .chantype = -1 }, | |
59 | { .name = "10MHZ", | |
60 | .width = NL80211_CHAN_WIDTH_10, | |
61 | .freq1_diff = 0, | |
62 | .chantype = -1 }, | |
63 | }; | |
64 | ||
65 | if (argc < 2) | |
66 | return 1; | |
67 | ||
68 | /* SSID */ | |
69 | NLA_PUT(msg, NL80211_ATTR_SSID, strlen(argv[0]), argv[0]); | |
70 | argv++; | |
71 | argc--; | |
72 | ||
73 | /* freq */ | |
74 | freq = strtoul(argv[0], &end, 10); | |
75 | if (*end != '\0') | |
76 | return 1; | |
77 | ||
78 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); | |
79 | argv++; | |
80 | argc--; | |
81 | ||
82 | if (argc) { | |
83 | for (i = 0; i < ARRAY_SIZE(chanmode); i++) { | |
84 | if (strcasecmp(chanmode[i].name, argv[0]) == 0) { | |
85 | chanmode_selected = &chanmode[i]; | |
86 | break; | |
87 | } | |
88 | } | |
89 | if (chanmode_selected) { | |
90 | NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, | |
91 | chanmode_selected->width); | |
92 | NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ1, | |
93 | freq + chanmode_selected->freq1_diff); | |
94 | if (chanmode_selected->chantype != -1) | |
95 | NLA_PUT_U32(msg, | |
96 | NL80211_ATTR_WIPHY_CHANNEL_TYPE, | |
97 | chanmode_selected->chantype); | |
98 | ||
99 | argv++; | |
100 | argc--; | |
101 | } | |
102 | ||
103 | } | |
104 | ||
105 | if (argc && strcmp(argv[0], "fixed-freq") == 0) { | |
106 | NLA_PUT_FLAG(msg, NL80211_ATTR_FREQ_FIXED); | |
107 | argv++; | |
108 | argc--; | |
109 | } | |
110 | ||
111 | if (argc) { | |
112 | if (mac_addr_a2n(abssid, argv[0]) == 0) { | |
113 | NLA_PUT(msg, NL80211_ATTR_MAC, 6, abssid); | |
114 | argv++; | |
115 | argc--; | |
116 | } | |
117 | } | |
118 | ||
119 | if (argc > 1 && strcmp(argv[0], "beacon-interval") == 0) { | |
120 | argv++; | |
121 | argc--; | |
122 | bintval = strtoul(argv[0], &end, 10); | |
123 | if (*end != '\0') | |
124 | return 1; | |
125 | NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, bintval); | |
126 | argv++; | |
127 | argc--; | |
128 | } | |
129 | ||
130 | /* basic rates */ | |
131 | if (argc > 1 && strcmp(argv[0], "basic-rates") == 0) { | |
132 | argv++; | |
133 | argc--; | |
134 | ||
135 | value = strtok_r(argv[0], ",", &sptr); | |
136 | ||
137 | while (value && n_rates < NL80211_MAX_SUPP_RATES) { | |
138 | rate = strtod(value, &end); | |
139 | rates[n_rates] = rate * 2; | |
140 | ||
141 | /* filter out suspicious values */ | |
142 | if (*end != '\0' || !rates[n_rates] || | |
143 | rate*2 != rates[n_rates]) | |
144 | return 1; | |
145 | ||
146 | n_rates++; | |
147 | value = strtok_r(NULL, ",", &sptr); | |
148 | } | |
149 | ||
150 | NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, n_rates, rates); | |
151 | ||
152 | argv++; | |
153 | argc--; | |
154 | } | |
155 | ||
156 | /* multicast rate */ | |
157 | if (argc > 1 && strcmp(argv[0], "mcast-rate") == 0) { | |
158 | argv++; | |
159 | argc--; | |
160 | ||
161 | rate = strtod(argv[0], &end); | |
162 | if (*end != '\0') | |
163 | return 1; | |
164 | ||
165 | NLA_PUT_U32(msg, NL80211_ATTR_MCAST_RATE, (int)(rate * 10)); | |
166 | argv++; | |
167 | argc--; | |
168 | } | |
169 | ||
170 | if (!argc) | |
171 | return 0; | |
172 | ||
173 | if (strcmp(*argv, "key") != 0 && strcmp(*argv, "keys") != 0) | |
174 | return 1; | |
175 | ||
176 | argv++; | |
177 | argc--; | |
178 | ||
179 | return parse_keys(msg, argv, argc); | |
180 | nla_put_failure: | |
181 | return -ENOSPC; | |
182 | } | |
183 | ||
184 | static int leave_ibss(struct nl80211_state *state, | |
185 | struct nl_msg *msg, | |
186 | int argc, char **argv, | |
187 | enum id_input id) | |
188 | { | |
189 | return 0; | |
190 | } | |
191 | COMMAND(ibss, leave, NULL, | |
192 | NL80211_CMD_LEAVE_IBSS, 0, CIB_NETDEV, leave_ibss, | |
193 | "Leave the current IBSS cell."); | |
194 | COMMAND(ibss, join, | |
195 | "<SSID> <freq in MHz> [HT20|HT40+|HT40-|NOHT|5MHZ|10MHZ] [fixed-freq] [<fixed bssid>] [beacon-interval <TU>]" | |
196 | " [basic-rates <rate in Mbps,rate2,...>] [mcast-rate <rate in Mbps>] " | |
197 | "[key d:0:abcde]", | |
198 | NL80211_CMD_JOIN_IBSS, 0, CIB_NETDEV, join_ibss, | |
199 | "Join the IBSS cell with the given SSID, if it doesn't exist create\n" | |
200 | "it on the given frequency. When fixed frequency is requested, don't\n" | |
201 | "join/create a cell on a different frequency. When a fixed BSSID is\n" | |
202 | "requested use that BSSID and do not adopt another cell's BSSID even\n" | |
203 | "if it has higher TSF and the same SSID. If an IBSS is created, create\n" | |
204 | "it with the specified basic-rates, multicast-rate and beacon-interval."); |