pcap/capture/activated/
dead.rs

1use std::ptr::NonNull;
2
3use crate::{
4    capture::{Capture, Dead},
5    linktype::Linktype,
6    raw, Error,
7};
8
9#[cfg(libpcap_1_5_0)]
10use crate::capture::Precision;
11
12impl Capture<Dead> {
13    /// Creates a "fake" capture handle for the given link type.
14    pub fn dead(linktype: Linktype) -> Result<Capture<Dead>, Error> {
15        let handle = unsafe { raw::pcap_open_dead(linktype.0, 65535) };
16        Ok(Capture::from(
17            NonNull::<raw::pcap_t>::new(handle).ok_or(Error::InsufficientMemory)?,
18        ))
19    }
20
21    /// Creates a "fake" capture handle for the given link type and timestamp precision.
22    #[cfg(libpcap_1_5_0)]
23    pub fn dead_with_precision(
24        linktype: Linktype,
25        precision: Precision,
26    ) -> Result<Capture<Dead>, Error> {
27        let handle = unsafe {
28            raw::pcap_open_dead_with_tstamp_precision(linktype.0, 65535, precision as u32)
29        };
30        Ok(Capture::from(
31            NonNull::<raw::pcap_t>::new(handle).ok_or(Error::InsufficientMemory)?,
32        ))
33    }
34}
35
36#[cfg(test)]
37mod tests {
38    #[cfg(libpcap_1_5_0)]
39    use mockall::predicate;
40
41    use crate::raw::testmod::{as_pcap_t, RAWMTX};
42
43    use super::*;
44
45    #[test]
46    fn test_dead() {
47        let _m = RAWMTX.lock();
48
49        let mut dummy: isize = 777;
50        let pcap = as_pcap_t(&mut dummy);
51
52        let ctx = raw::pcap_open_dead_context();
53        ctx.expect().return_once_st(move |_, _| pcap);
54
55        let ctx = raw::pcap_close_context();
56        ctx.expect()
57            .withf_st(move |ptr| *ptr == pcap)
58            .return_once(|_| {});
59
60        let result = Capture::dead(Linktype::ETHERNET);
61        assert!(result.is_ok());
62    }
63
64    #[test]
65    #[cfg(libpcap_1_5_0)]
66    fn test_dead_with_precision() {
67        let _m = RAWMTX.lock();
68
69        let mut dummy: isize = 777;
70        let pcap = as_pcap_t(&mut dummy);
71
72        let ctx = raw::pcap_open_dead_with_tstamp_precision_context();
73        ctx.expect()
74            .with(predicate::always(), predicate::always(), predicate::eq(1))
75            .return_once_st(move |_, _, _| pcap);
76
77        let ctx = raw::pcap_close_context();
78        ctx.expect()
79            .withf_st(move |ptr| *ptr == pcap)
80            .return_once(|_| {});
81
82        let result = Capture::dead_with_precision(Linktype::ETHERNET, Precision::Nano);
83        assert!(result.is_ok());
84    }
85}
pcap/capture/activated/dead.rs

pcap/capture/activated/
dead.rs
