feat: add pcap

__network/n_pcap/Cargo.lock

@@ -0,0 +1,109 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
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+ "memchr",
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+
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+ "cfg-if",
+ "winapi",
+]
+
+[[package]]
+name = "memchr"
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+checksum = "0ee1c47aaa256ecabcaea351eae4a9b01ef39ed810004e298d2511ed284b1525"
+
+[[package]]
+name = "n_pcap"
+version = "0.1.0"
+dependencies = [
+ "pcap",
+]
+
+[[package]]
+name = "pcap"
+version = "0.7.0"
+dependencies = [
+ "libc",
+ "libloading",
+ "regex",
+]
+
+[[package]]
+name = "regex"
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+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-syntax",
+ "thread_local",
+]
+
+[[package]]
+name = "regex-syntax"
+version = "0.6.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
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+dependencies = [
+ "lazy_static",
+]
+
+[[package]]
+name = "winapi"
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+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
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+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
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__network/n_pcap/Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+name = "n_pcap"
+version = "0.1.0"
+authors = ["Hatter Jiang <jht5945@gmail.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+pcap = { path = "../pcap" }

__network/n_pcap/src/main.rs

@@ -0,0 +1,60 @@
+use std::env;
+use pcap::*;
+
+fn main() {
+    let mut args = env::args();
+    args.next();
+    match args.next() {
+        None => println!("No arg!"),
+        Some(arg1) => match arg1.as_str() {
+            "d" | "dump" => dump(),
+            "p" | "pcap" => pcap(),
+            _ => println!("Unknown arg: {}", arg1),
+        }
+    }
+}
+
+fn pcap() {
+    let device = Device::lookup().unwrap();
+    println!("Using device {}", device.name);
+
+    let mut cap = Capture::from_device(device)
+        .unwrap()
+        .immediate_mode(true)
+        .open()
+        .unwrap();
+
+    let mut savefile = cap.savefile("test.pcap").unwrap();
+
+    for _ in 0..10 {
+        let p = cap.next().unwrap();
+        println!("packet received on network: {:?}", p);
+        savefile.write(&p);
+    }
+    // let mut cap = Capture::from_file("test.pcap").unwrap();
+    // let p = cap.next().unwrap();
+    // println!("packet obtained from file: {:?}", p);
+}
+
+fn dump() {
+    let device = Device::lookup().unwrap();
+    println!("Using device {}", device.name);
+
+    let mut cap = Capture::from_device(device)
+        .unwrap()
+        .immediate_mode(true)
+        .open()
+        .unwrap();
+
+    loop {
+        if let Ok(c) = cap.next() {
+            println!("{:?}", c.header);
+            println!("{:?}", c.data);
+        }
+    }
+    // let stats = cap.stats().unwrap();
+    // println!(
+    //     "Received: {}, dropped: {}, if_dropped: {}",
+    //     stats.received, stats.dropped, stats.if_dropped
+    // );
+}