1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
use embassy_net_driver_channel as ch;
use embassy_net_driver_channel::driver::{HardwareAddress, LinkState};
use heapless::String;
use crate::ioctl::Shared;
use crate::proto::{self, CtrlMsg};
#[derive(Copy, Clone, PartialEq, Eq, Debug)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
pub enum Error {
Failed(u32),
Timeout,
Internal,
}
pub struct Control<'a> {
state_ch: ch::StateRunner<'a>,
shared: &'a Shared,
}
#[allow(unused)]
#[derive(Copy, Clone, PartialEq, Eq, Debug)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
enum WifiMode {
None = 0,
Sta = 1,
Ap = 2,
ApSta = 3,
}
pub use proto::CtrlWifiSecProt as Security;
#[derive(Clone, Debug)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
pub struct Status {
pub ssid: String<32>,
pub bssid: [u8; 6],
pub rssi: i32,
pub channel: u32,
pub security: Security,
}
macro_rules! ioctl {
($self:ident, $req_variant:ident, $resp_variant:ident, $req:ident, $resp:ident) => {
let mut msg = proto::CtrlMsg {
msg_id: proto::CtrlMsgId::$req_variant as _,
msg_type: proto::CtrlMsgType::Req as _,
payload: Some(proto::CtrlMsgPayload::$req_variant($req)),
};
$self.ioctl(&mut msg).await?;
#[allow(unused_mut)]
let Some(proto::CtrlMsgPayload::$resp_variant(mut $resp)) = msg.payload
else {
warn!("unexpected response variant");
return Err(Error::Internal);
};
if $resp.resp != 0 {
return Err(Error::Failed($resp.resp));
}
};
}
impl<'a> Control<'a> {
pub(crate) fn new(state_ch: ch::StateRunner<'a>, shared: &'a Shared) -> Self {
Self { state_ch, shared }
}
pub async fn init(&mut self) -> Result<(), Error> {
debug!("wait for init event...");
self.shared.init_wait().await;
debug!("set heartbeat");
self.set_heartbeat(10).await?;
debug!("set wifi mode");
self.set_wifi_mode(WifiMode::Sta as _).await?;
let mac_addr = self.get_mac_addr().await?;
debug!("mac addr: {:02x}", mac_addr);
self.state_ch.set_hardware_address(HardwareAddress::Ethernet(mac_addr));
Ok(())
}
pub async fn get_status(&mut self) -> Result<Status, Error> {
let req = proto::CtrlMsgReqGetApConfig {};
ioctl!(self, ReqGetApConfig, RespGetApConfig, req, resp);
trim_nulls(&mut resp.ssid);
Ok(Status {
ssid: resp.ssid,
bssid: parse_mac(&resp.bssid)?,
rssi: resp.rssi as _,
channel: resp.chnl,
security: resp.sec_prot,
})
}
pub async fn connect(&mut self, ssid: &str, password: &str) -> Result<(), Error> {
let req = proto::CtrlMsgReqConnectAp {
ssid: unwrap!(String::try_from(ssid)),
pwd: unwrap!(String::try_from(password)),
bssid: String::new(),
listen_interval: 3,
is_wpa3_supported: false,
};
ioctl!(self, ReqConnectAp, RespConnectAp, req, resp);
self.state_ch.set_link_state(LinkState::Up);
Ok(())
}
pub async fn disconnect(&mut self) -> Result<(), Error> {
let req = proto::CtrlMsgReqGetStatus {};
ioctl!(self, ReqDisconnectAp, RespDisconnectAp, req, resp);
self.state_ch.set_link_state(LinkState::Down);
Ok(())
}
/// duration in seconds, clamped to [10, 3600]
async fn set_heartbeat(&mut self, duration: u32) -> Result<(), Error> {
let req = proto::CtrlMsgReqConfigHeartbeat { enable: true, duration };
ioctl!(self, ReqConfigHeartbeat, RespConfigHeartbeat, req, resp);
Ok(())
}
async fn get_mac_addr(&mut self) -> Result<[u8; 6], Error> {
let req = proto::CtrlMsgReqGetMacAddress {
mode: WifiMode::Sta as _,
};
ioctl!(self, ReqGetMacAddress, RespGetMacAddress, req, resp);
parse_mac(&resp.mac)
}
async fn set_wifi_mode(&mut self, mode: u32) -> Result<(), Error> {
let req = proto::CtrlMsgReqSetMode { mode };
ioctl!(self, ReqSetWifiMode, RespSetWifiMode, req, resp);
Ok(())
}
async fn ioctl(&mut self, msg: &mut CtrlMsg) -> Result<(), Error> {
debug!("ioctl req: {:?}", &msg);
let mut buf = [0u8; 128];
let req_len = noproto::write(msg, &mut buf).map_err(|_| {
warn!("failed to serialize control request");
Error::Internal
})?;
struct CancelOnDrop<'a>(&'a Shared);
impl CancelOnDrop<'_> {
fn defuse(self) {
core::mem::forget(self);
}
}
impl Drop for CancelOnDrop<'_> {
fn drop(&mut self) {
self.0.ioctl_cancel();
}
}
let ioctl = CancelOnDrop(self.shared);
let resp_len = ioctl.0.ioctl(&mut buf, req_len).await;
ioctl.defuse();
*msg = noproto::read(&buf[..resp_len]).map_err(|_| {
warn!("failed to serialize control request");
Error::Internal
})?;
debug!("ioctl resp: {:?}", msg);
Ok(())
}
}
// WHY IS THIS A STRING? WHYYYY
fn parse_mac(mac: &str) -> Result<[u8; 6], Error> {
fn nibble_from_hex(b: u8) -> Result<u8, Error> {
match b {
b'0'..=b'9' => Ok(b - b'0'),
b'a'..=b'f' => Ok(b + 0xa - b'a'),
b'A'..=b'F' => Ok(b + 0xa - b'A'),
_ => {
warn!("invalid hex digit {}", b);
Err(Error::Internal)
}
}
}
let mac = mac.as_bytes();
let mut res = [0; 6];
if mac.len() != 17 {
warn!("unexpected MAC length");
return Err(Error::Internal);
}
for (i, b) in res.iter_mut().enumerate() {
*b = (nibble_from_hex(mac[i * 3])? << 4) | nibble_from_hex(mac[i * 3 + 1])?
}
Ok(res)
}
fn trim_nulls<const N: usize>(s: &mut String<N>) {
while s.chars().rev().next() == Some(0 as char) {
s.pop();
}
}
|
