geph5_client/
lib.rs

1use std::ffi::c_char;
2use std::ffi::c_int;
3use std::ffi::CStr;
4use std::io::Write;
5
6pub use broker::broker_client;
7pub use broker::BrokerSource;
8use bytes::Bytes;
9pub use client::Client;
10pub use client::{BridgeMode, BrokerKeys, Config};
11
12pub use get_dialer::ExitConstraint;
13use nanorpc::JrpcRequest;
14use nanorpc::RpcTransport;
15use once_cell::sync::OnceCell;
16
17mod auth;
18mod broker;
19mod bw_accounting;
20mod bw_token;
21mod china;
22mod client;
23mod control_prot;
24mod database;
25mod device_metadata;
26mod http_proxy;
27mod litecopy;
28pub mod logging;
29mod session;
30
31mod get_dialer;
32mod pac;
33mod socks5;
34mod spoof_dns;
35mod stats;
36mod taskpool;
37mod traffcount;
38mod updates;
39mod vpn;
40
41// C interface
42
43static CLIENT: OnceCell<Client> = OnceCell::new();
44
45#[no_mangle]
46pub unsafe extern "C" fn start_client(cfg: *const c_char) -> libc::c_int {
47    let cfg_str = unsafe { CStr::from_ptr(cfg) }.to_str().unwrap();
48    let cfg: Config = serde_json::from_str(cfg_str).unwrap();
49
50    CLIENT.get_or_init(|| Client::start(cfg));
51
52    0
53}
54
55#[no_mangle]
56pub unsafe extern "C" fn daemon_rpc(
57    jrpc_req: *const c_char,
58    out_buf: *mut c_char,
59    out_buflen: c_int,
60) -> c_int {
61    let req_str = unsafe { CStr::from_ptr(jrpc_req) }.to_str().unwrap();
62    let jrpc: JrpcRequest = serde_json::from_str(req_str).unwrap();
63
64    if let Some(client) = CLIENT.get() {
65        let ctrl = client.control_client().0;
66        if let Ok(response) = smolscale::block_on(async move { ctrl.call_raw(jrpc).await }) {
67            let response_json = serde_json::to_string(&response).unwrap();
68            let response_c = std::ffi::CString::new(response_json).unwrap();
69            let bytes = response_c.as_bytes_with_nul();
70
71            unsafe { fill_buffer(out_buf, out_buflen, bytes) }
72        } else {
73            -2 // jrpc error
74        }
75    } else {
76        -1 // daemon not started
77    }
78}
79
80#[no_mangle]
81pub unsafe extern "C" fn send_pkt(pkt: *const c_char, pkt_len: c_int) -> c_int {
82    let slice: &'static [u8] = std::slice::from_raw_parts(pkt as *mut u8, pkt_len as usize);
83    if let Some(client) = CLIENT.get() {
84        if let Ok(_) = smol::future::block_on(client.send_vpn_packet(Bytes::copy_from_slice(slice)))
85        {
86            return 0;
87        }
88    }
89    -1
90}
91
92#[no_mangle]
93pub unsafe extern "C" fn recv_pkt(out_buf: *mut c_char, out_buflen: c_int) -> c_int {
94    if let Some(client) = CLIENT.get() {
95        if let Ok(pkt) = smol::future::block_on(client.recv_vpn_packet()) {
96            return fill_buffer(out_buf, out_buflen, &pkt);
97        }
98    }
99    -1
100}
101
102unsafe fn fill_buffer(buffer: *mut c_char, buflen: c_int, output: &[u8]) -> c_int {
103    let mut slice = std::slice::from_raw_parts_mut(buffer as *mut u8, buflen as usize);
104    if output.len() < slice.len() {
105        if slice.write_all(output).is_err() {
106            tracing::debug!("writing to buffer failed!");
107            -4
108        } else {
109            output.len() as c_int
110        }
111    } else {
112        tracing::debug!(" buffer not big enough!");
113        -3
114    }
115}
116
117#[cfg(test)]
118mod tests {
119    use smol::Timer;
120
121    use super::*;
122    use std::{
123        ffi::CString,
124        net::{Ipv4Addr, SocketAddr},
125    };
126
127    const CONTROL_ADDR: SocketAddr =
128        SocketAddr::new(std::net::IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 12222);
129
130    pub const PAC_ADDR: SocketAddr =
131        SocketAddr::new(std::net::IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 12223);
132
133    const SOCKS5_ADDR: SocketAddr =
134        SocketAddr::new(std::net::IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 9909);
135
136    pub const HTTP_ADDR: SocketAddr =
137        SocketAddr::new(std::net::IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 9910);
138
139    #[test]
140    fn test_clib() {
141        let cfg = super::Config {
142            // These fields are the base defaults:
143            socks5_listen: Some(SOCKS5_ADDR),
144            http_proxy_listen: Some(HTTP_ADDR),
145            control_listen: Some(CONTROL_ADDR),
146            exit_constraint: super::ExitConstraint::Auto,
147            bridge_mode: BridgeMode::Auto,
148            cache: None,
149            vpn_fd: None,
150            broker: Some(BrokerSource::Race(vec![
151                BrokerSource::Fronted {
152                    front: "https://www.cdn77.com/".into(),
153                    host: "1826209743.rsc.cdn77.org".into(),
154                    override_dns: None,
155                },
156                BrokerSource::Fronted {
157                    front: "https://vuejs.org/".into(),
158                    host: "svitania-naidallszei-2.netlify.app".into(),
159                    override_dns: None,
160                },
161            ])),
162            broker_keys: Some(BrokerKeys {
163                master: "88c1d2d4197bed815b01a22cadfc6c35aa246dddb553682037a118aebfaa3954".into(),
164                mizaru_free: "0558216cbab7a9c46f298f4c26e171add9af87d0694988b8a8fe52ee932aa754"
165                    .into(),
166                mizaru_plus: "cf6f58868c6d9459b3a63bc2bd86165631b3e916bad7f62b578cd9614e0bcb3b"
167                    .into(),
168                mizaru_bw: "".to_string(),
169            }),
170            // Values that can be overridden by `args`:
171            vpn: false,
172            spoof_dns: false,
173            passthrough_china: false,
174            dry_run: false,
175            credentials: geph5_broker_protocol::Credential::Secret(String::new()),
176            sess_metadata: Default::default(),
177            task_limit: None,
178            pac_listen: Some(PAC_ADDR),
179        };
180        let cfg_str = CString::new(serde_json::to_string(&cfg).unwrap()).unwrap();
181        let cfg_ptr = cfg_str.as_ptr();
182
183        let start_client_ret = unsafe { start_client(cfg_ptr) };
184        assert!(start_client_ret == 0);
185
186        // call daemon_rpc;
187        for _ in 0..2 {
188            let jrpc_req = JrpcRequest {
189                jsonrpc: "2.0".into(),
190                method: "user_info".into(),
191                params: [].into(),
192                id: nanorpc::JrpcId::Number(1),
193            };
194            let jrpc_req_str = CString::new(serde_json::to_string(&jrpc_req).unwrap()).unwrap();
195            let jrpc_req_ptr = jrpc_req_str.as_ptr();
196            // Allocate a buffer for the response
197            let mut out_buf = vec![0; 1024 * 128]; // Adjust size as needed
198            let out_buf_ptr = out_buf.as_mut_ptr();
199
200            let rpc_ret = unsafe { daemon_rpc(jrpc_req_ptr, out_buf_ptr, out_buf.len() as _) };
201            println!("daemon_rpc retcode = {rpc_ret}");
202            assert!(rpc_ret >= 0);
203            let output = unsafe { CStr::from_ptr(out_buf_ptr) }.to_str().unwrap();
204            println!("daemon_rpc output = {output}");
205            smolscale::block_on(async { Timer::after(std::time::Duration::from_secs(1)).await });
206        }
207    }
208}
geph5_client/lib.rs

geph5_client/
lib.rs
