geph5_client/
lib.rs

1use std::ffi::CStr;
2use std::ffi::c_char;
3use std::ffi::c_int;
4use std::io::Write;
5
6pub use broker::{BrokerSource, TunneledBrokerSource};
7pub use broker::broker_client;
8use bytes::Bytes;
9pub use client::Client;
10pub use client::{BrokerKeys, Config};
11pub use geph5_broker_protocol::ExitConstraint;
12use nanorpc::JrpcRequest;
13use nanorpc::RpcTransport;
14use once_cell::sync::OnceCell;
15
16mod auth;
17mod broker;
18mod bw_accounting;
19mod bw_token;
20mod china;
21mod client;
22mod control_prot;
23mod database;
24mod device_metadata;
25mod http_proxy;
26mod litecopy;
27pub mod logging;
28mod session;
29
30mod get_dialer;
31mod pac;
32mod port_forward;
33mod socks5;
34mod spoof_dns;
35mod stats;
36mod taskpool;
37mod tunneled_http;
38mod traffcount;
39mod updates;
40mod vpn;
41
42// C interface
43
44static CLIENT: OnceCell<Client> = OnceCell::new();
45
46#[unsafe(no_mangle)]
47pub unsafe extern "C" fn start_client(cfg: *const c_char) -> libc::c_int {
48    let cfg_str = unsafe { CStr::from_ptr(cfg) }.to_str().unwrap();
49    let cfg: Config = serde_json::from_str(cfg_str).unwrap();
50
51    CLIENT.get_or_init(|| Client::start(cfg));
52
53    0
54}
55
56#[unsafe(no_mangle)]
57pub unsafe extern "C" fn daemon_rpc(
58    jrpc_req: *const c_char,
59    out_buf: *mut c_char,
60    out_buflen: c_int,
61) -> c_int {
62    let req_str = unsafe { CStr::from_ptr(jrpc_req) }.to_str().unwrap();
63    let jrpc: JrpcRequest = serde_json::from_str(req_str).unwrap();
64
65    if let Some(client) = CLIENT.get() {
66        let ctrl = client.control_client().0;
67        if let Ok(response) = smolscale::block_on(async move { ctrl.call_raw(jrpc).await }) {
68            let response_json = serde_json::to_string(&response).unwrap();
69            let response_c = std::ffi::CString::new(response_json).unwrap();
70            let bytes = response_c.as_bytes_with_nul();
71
72            unsafe { fill_buffer(out_buf, out_buflen, bytes) }
73        } else {
74            -2 // jrpc error
75        }
76    } else {
77        -1 // daemon not started
78    }
79}
80
81#[unsafe(no_mangle)]
82pub unsafe extern "C" fn send_pkt(pkt: *const c_char, pkt_len: c_int) -> c_int {
83    let slice: &'static [u8] =
84        unsafe { std::slice::from_raw_parts(pkt as *mut u8, pkt_len as usize) };
85    if let Some(client) = CLIENT.get()
86        && let Ok(_) = smol::future::block_on(client.send_vpn_packet(Bytes::copy_from_slice(slice)))
87    {
88        return 0;
89    }
90    -1
91}
92
93#[unsafe(no_mangle)]
94pub unsafe extern "C" fn recv_pkt(out_buf: *mut c_char, out_buflen: c_int) -> c_int {
95    if let Some(client) = CLIENT.get()
96        && let Ok(pkt) = smol::future::block_on(client.recv_vpn_packet())
97    {
98        return unsafe { fill_buffer(out_buf, out_buflen, &pkt) };
99    }
100    -1
101}
102
103unsafe fn fill_buffer(buffer: *mut c_char, buflen: c_int, output: &[u8]) -> c_int {
104    let mut slice = unsafe { std::slice::from_raw_parts_mut(buffer as *mut u8, buflen as usize) };
105    if output.len() < slice.len() {
106        if slice.write_all(output).is_err() {
107            tracing::debug!("writing to buffer failed!");
108            -4
109        } else {
110            output.len() as c_int
111        }
112    } else {
113        tracing::debug!(" buffer not big enough!");
114        -3
115    }
116}
117
118#[cfg(test)]
119mod tests {
120    use smol::Timer;
121
122    use super::*;
123    use serde_json::json;
124    use std::{
125        ffi::CString,
126        net::{Ipv4Addr, SocketAddr},
127    };
128
129    const CONTROL_ADDR: SocketAddr =
130        SocketAddr::new(std::net::IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 12222);
131
132    pub const PAC_ADDR: SocketAddr =
133        SocketAddr::new(std::net::IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 12223);
134
135    const SOCKS5_ADDR: SocketAddr =
136        SocketAddr::new(std::net::IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 9909);
137
138    pub const HTTP_ADDR: SocketAddr =
139        SocketAddr::new(std::net::IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 9910);
140
141    #[test]
142    fn test_clib() {
143        let cfg = super::Config {
144            // These fields are the base defaults:
145            socks5_listen: Some(SOCKS5_ADDR),
146            http_proxy_listen: Some(HTTP_ADDR),
147            control_listen: Some(CONTROL_ADDR),
148            exit_constraint: super::ExitConstraint::Auto,
149            allow_direct: false,
150            port_forward: vec![],
151            cache: None,
152            vpn_fd: None,
153            broker: Some(BrokerSource::Race(vec![
154                BrokerSource::Fronted {
155                    front: "https://www.cdn77.com/".into(),
156                    host: "1826209743.rsc.cdn77.org".into(),
157                    override_dns: None,
158                },
159                BrokerSource::Fronted {
160                    front: "https://vuejs.org/".into(),
161                    host: "svitania-naidallszei-2.netlify.app".into(),
162                    override_dns: None,
163                },
164            ])),
165            tunneled_broker: None,
166            broker_keys: Some(BrokerKeys {
167                master: "88c1d2d4197bed815b01a22cadfc6c35aa246dddb553682037a118aebfaa3954".into(),
168                mizaru_free: "0558216cbab7a9c46f298f4c26e171add9af87d0694988b8a8fe52ee932aa754"
169                    .into(),
170                mizaru_plus: "cf6f58868c6d9459b3a63bc2bd86165631b3e916bad7f62b578cd9614e0bcb3b"
171                    .into(),
172                mizaru_bw: "".to_string(),
173            }),
174            // Values that can be overridden by `args`:
175            vpn: false,
176            spoof_dns: false,
177            passthrough_china: false,
178            dry_run: false,
179            credentials: geph5_broker_protocol::Credential::Secret(String::new()),
180            sess_metadata: Default::default(),
181            task_limit: None,
182            pac_listen: Some(PAC_ADDR),
183        };
184        let cfg_str = CString::new(serde_json::to_string(&cfg).unwrap()).unwrap();
185        let cfg_ptr = cfg_str.as_ptr();
186
187        let start_client_ret = unsafe { start_client(cfg_ptr) };
188        assert!(start_client_ret == 0);
189
190        // call daemon_rpc;
191        for _ in 0..2 {
192            let cred = geph5_broker_protocol::Credential::Secret(String::new());
193            let jrpc_req = JrpcRequest {
194                jsonrpc: "2.0".into(),
195                method: "broker_rpc".into(),
196                params: vec![
197                    json!("get_user_info_by_cred"),
198                    serde_json::to_value(vec![cred]).unwrap(),
199                ]
200                .into(),
201                id: nanorpc::JrpcId::Number(1),
202            };
203            let jrpc_req_str = CString::new(serde_json::to_string(&jrpc_req).unwrap()).unwrap();
204            let jrpc_req_ptr = jrpc_req_str.as_ptr();
205            // Allocate a buffer for the response
206            let mut out_buf = vec![0; 1024 * 128]; // Adjust size as needed
207            let out_buf_ptr = out_buf.as_mut_ptr();
208
209            let rpc_ret = unsafe { daemon_rpc(jrpc_req_ptr, out_buf_ptr, out_buf.len() as _) };
210            println!("daemon_rpc retcode = {rpc_ret}");
211            assert!(rpc_ret >= 0);
212            let output = unsafe { CStr::from_ptr(out_buf_ptr) }.to_str().unwrap();
213            println!("daemon_rpc output = {output}");
214            let resp: nanorpc::JrpcResponse = serde_json::from_str(output).unwrap();
215            assert!(resp.error.is_none(), "daemon_rpc error: {:?}", resp.error);
216            smolscale::block_on(async { Timer::after(std::time::Duration::from_secs(1)).await });
217        }
218    }
219}
geph5_client/lib.rs

geph5_client/
lib.rs
