mirror of
https://github.com/h3xduck/TripleCross.git
synced 2025-12-21 01:03:08 +08:00
Setup development environment with libbpf
This commit is contained in:
h3xduck
2
external/libbpf-bootstrap/examples/rust/tracecon/.gitignore
vendored
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2
external/libbpf-bootstrap/examples/rust/tracecon/.gitignore
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759
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759
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checksum = "2e7573632e6454cf6b99d7aac4ccca54be06da05aca2ef7423d22d27d4d4bcd8"
|
||||
dependencies = [
|
||||
"libc",
|
||||
"rand_chacha",
|
||||
"rand_core",
|
||||
"rand_hc",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "rand_chacha"
|
||||
version = "0.3.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
|
||||
dependencies = [
|
||||
"ppv-lite86",
|
||||
"rand_core",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "rand_core"
|
||||
version = "0.6.3"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "d34f1408f55294453790c48b2f1ebbb1c5b4b7563eb1f418bcfcfdbb06ebb4e7"
|
||||
dependencies = [
|
||||
"getrandom",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "rand_hc"
|
||||
version = "0.3.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "d51e9f596de227fda2ea6c84607f5558e196eeaf43c986b724ba4fb8fdf497e7"
|
||||
dependencies = [
|
||||
"rand_core",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "redox_syscall"
|
||||
version = "0.2.10"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "8383f39639269cde97d255a32bdb68c047337295414940c68bdd30c2e13203ff"
|
||||
dependencies = [
|
||||
"bitflags",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "regex"
|
||||
version = "1.5.4"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "d07a8629359eb56f1e2fb1652bb04212c072a87ba68546a04065d525673ac461"
|
||||
dependencies = [
|
||||
"aho-corasick",
|
||||
"memchr",
|
||||
"regex-syntax",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "regex-syntax"
|
||||
version = "0.6.25"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "f497285884f3fcff424ffc933e56d7cbca511def0c9831a7f9b5f6153e3cc89b"
|
||||
|
||||
[[package]]
|
||||
name = "remove_dir_all"
|
||||
version = "0.5.3"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "3acd125665422973a33ac9d3dd2df85edad0f4ae9b00dafb1a05e43a9f5ef8e7"
|
||||
dependencies = [
|
||||
"winapi",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "ryu"
|
||||
version = "1.0.5"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "71d301d4193d031abdd79ff7e3dd721168a9572ef3fe51a1517aba235bd8f86e"
|
||||
|
||||
[[package]]
|
||||
name = "scroll"
|
||||
version = "0.10.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "fda28d4b4830b807a8b43f7b0e6b5df875311b3e7621d84577188c175b6ec1ec"
|
||||
|
||||
[[package]]
|
||||
name = "scroll_derive"
|
||||
version = "0.10.5"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "aaaae8f38bb311444cfb7f1979af0bc9240d95795f75f9ceddf6a59b79ceffa0"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "semver"
|
||||
version = "0.11.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "f301af10236f6df4160f7c3f04eec6dbc70ace82d23326abad5edee88801c6b6"
|
||||
dependencies = [
|
||||
"semver-parser",
|
||||
"serde",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "semver"
|
||||
version = "1.0.4"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "568a8e6258aa33c13358f81fd834adb854c6f7c9468520910a9b1e8fac068012"
|
||||
|
||||
[[package]]
|
||||
name = "semver-parser"
|
||||
version = "0.10.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "00b0bef5b7f9e0df16536d3961cfb6e84331c065b4066afb39768d0e319411f7"
|
||||
dependencies = [
|
||||
"pest",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "serde"
|
||||
version = "1.0.130"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "f12d06de37cf59146fbdecab66aa99f9fe4f78722e3607577a5375d66bd0c913"
|
||||
dependencies = [
|
||||
"serde_derive",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "serde_derive"
|
||||
version = "1.0.130"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "d7bc1a1ab1961464eae040d96713baa5a724a8152c1222492465b54322ec508b"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "serde_json"
|
||||
version = "1.0.69"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "e466864e431129c7e0d3476b92f20458e5879919a0596c6472738d9fa2d342f8"
|
||||
dependencies = [
|
||||
"itoa",
|
||||
"ryu",
|
||||
"serde",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "strsim"
|
||||
version = "0.8.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
|
||||
|
||||
[[package]]
|
||||
name = "structopt"
|
||||
version = "0.3.25"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "40b9788f4202aa75c240ecc9c15c65185e6a39ccdeb0fd5d008b98825464c87c"
|
||||
dependencies = [
|
||||
"clap",
|
||||
"lazy_static",
|
||||
"structopt-derive",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "structopt-derive"
|
||||
version = "0.4.18"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "dcb5ae327f9cc13b68763b5749770cb9e048a99bd9dfdfa58d0cf05d5f64afe0"
|
||||
dependencies = [
|
||||
"heck",
|
||||
"proc-macro-error",
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "strum_macros"
|
||||
version = "0.21.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "d06aaeeee809dbc59eb4556183dd927df67db1540de5be8d3ec0b6636358a5ec"
|
||||
dependencies = [
|
||||
"heck",
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "syn"
|
||||
version = "1.0.81"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "f2afee18b8beb5a596ecb4a2dce128c719b4ba399d34126b9e4396e3f9860966"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"unicode-xid",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "tempfile"
|
||||
version = "3.2.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "dac1c663cfc93810f88aed9b8941d48cabf856a1b111c29a40439018d870eb22"
|
||||
dependencies = [
|
||||
"cfg-if",
|
||||
"libc",
|
||||
"rand",
|
||||
"redox_syscall",
|
||||
"remove_dir_all",
|
||||
"winapi",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "textwrap"
|
||||
version = "0.11.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "d326610f408c7a4eb6f51c37c330e496b08506c9457c9d34287ecc38809fb060"
|
||||
dependencies = [
|
||||
"unicode-width",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "thiserror"
|
||||
version = "1.0.30"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "854babe52e4df1653706b98fcfc05843010039b406875930a70e4d9644e5c417"
|
||||
dependencies = [
|
||||
"thiserror-impl",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "thiserror-impl"
|
||||
version = "1.0.30"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "aa32fd3f627f367fe16f893e2597ae3c05020f8bba2666a4e6ea73d377e5714b"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "toml"
|
||||
version = "0.5.8"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "a31142970826733df8241ef35dc040ef98c679ab14d7c3e54d827099b3acecaa"
|
||||
dependencies = [
|
||||
"serde",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "tracecon"
|
||||
version = "0.1.0"
|
||||
dependencies = [
|
||||
"anyhow",
|
||||
"ctrlc",
|
||||
"libbpf-cargo",
|
||||
"libbpf-rs",
|
||||
"libc",
|
||||
"object",
|
||||
"plain",
|
||||
"structopt",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "ucd-trie"
|
||||
version = "0.1.3"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "56dee185309b50d1f11bfedef0fe6d036842e3fb77413abef29f8f8d1c5d4c1c"
|
||||
|
||||
[[package]]
|
||||
name = "unicode-segmentation"
|
||||
version = "1.8.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "8895849a949e7845e06bd6dc1aa51731a103c42707010a5b591c0038fb73385b"
|
||||
|
||||
[[package]]
|
||||
name = "unicode-width"
|
||||
version = "0.1.9"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "3ed742d4ea2bd1176e236172c8429aaf54486e7ac098db29ffe6529e0ce50973"
|
||||
|
||||
[[package]]
|
||||
name = "unicode-xid"
|
||||
version = "0.2.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "8ccb82d61f80a663efe1f787a51b16b5a51e3314d6ac365b08639f52387b33f3"
|
||||
|
||||
[[package]]
|
||||
name = "vec_map"
|
||||
version = "0.8.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "f1bddf1187be692e79c5ffeab891132dfb0f236ed36a43c7ed39f1165ee20191"
|
||||
|
||||
[[package]]
|
||||
name = "version_check"
|
||||
version = "0.9.3"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "5fecdca9a5291cc2b8dcf7dc02453fee791a280f3743cb0905f8822ae463b3fe"
|
||||
|
||||
[[package]]
|
||||
name = "vsprintf"
|
||||
version = "2.0.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "aec2f81b75ca063294776b4f7e8da71d1d5ae81c2b1b149c8d89969230265d63"
|
||||
dependencies = [
|
||||
"cc",
|
||||
"libc",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "wasi"
|
||||
version = "0.10.2+wasi-snapshot-preview1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
|
||||
|
||||
[[package]]
|
||||
name = "winapi"
|
||||
version = "0.3.9"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
|
||||
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"
|
||||
checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
|
||||
|
||||
[[package]]
|
||||
name = "winapi-x86_64-pc-windows-gnu"
|
||||
version = "0.4.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
|
||||
18
external/libbpf-bootstrap/examples/rust/tracecon/Cargo.toml
vendored
Normal file
18
external/libbpf-bootstrap/examples/rust/tracecon/Cargo.toml
vendored
Normal file
@@ -0,0 +1,18 @@
|
||||
[package]
|
||||
name = "tracecon"
|
||||
version = "0.1.0"
|
||||
authors = ["Magnus Kulke <mkulke@gmail.com>"]
|
||||
edition = "2018"
|
||||
license = "GPL-2.0 OR BSD-3-Clause"
|
||||
|
||||
[dependencies]
|
||||
anyhow = "1.0"
|
||||
libbpf-rs = "0.14.0"
|
||||
libc = "0.2"
|
||||
structopt = "0.3"
|
||||
ctrlc = "3.1"
|
||||
object = "0.25"
|
||||
plain = "0.2"
|
||||
|
||||
[build-dependencies]
|
||||
libbpf-cargo = "0.9.3"
|
||||
88
external/libbpf-bootstrap/examples/rust/tracecon/README.md
vendored
Normal file
88
external/libbpf-bootstrap/examples/rust/tracecon/README.md
vendored
Normal file
@@ -0,0 +1,88 @@
|
||||
# tracecon
|
||||
|
||||
An eBPF sample application, written in C & Rust using
|
||||
[libbpf-rs](https://github.com/libbpf/libbpf-rs). It will output all
|
||||
TCPv4 connections that have been established on the host as ips and
|
||||
hostnames by probing `tcp_v4_connect` in kernel and glibc's `getaddrinfo`
|
||||
in userland. On a successful host lookup the first result will be stored in
|
||||
a hashmap, which can be used as a lookup table to retrieve a hostname for
|
||||
ip_v4 connections.
|
||||
|
||||
## Requirements
|
||||
|
||||
### Kernel
|
||||
|
||||
The project is built on technology like `CO-RE` and `BTF`, which is only
|
||||
available in more recent kernels (5.0-ish). Ubuntu 20.10 has configured and
|
||||
packaged all the required dependencies.
|
||||
|
||||
### Compilers
|
||||
|
||||
The project has been tested with LLVM v11 and Rust v1.52.1.
|
||||
|
||||
### Generate `vmlinux.h`
|
||||
|
||||
```bash
|
||||
bpftool btf dump file /sys/kernel/btf/vmlinux format c > src/bpf/vmlinux.h
|
||||
```
|
||||
|
||||
You can verify whether your kernel was built with BTF enabled:
|
||||
|
||||
```bash
|
||||
cat /boot/config-$(uname -r) | grep CONFIG_DEBUG_INFO_BTF
|
||||
```
|
||||
|
||||
## Build
|
||||
|
||||
### Vagrant
|
||||
|
||||
eBPF is a low-level technology on the Linux kernel. Docker is not a good fit
|
||||
to build eBPF code on MacOS or Windows environments. On those platforms
|
||||
Docker ships its own kernel (e.g. linuxkit) and BTF might not be enabled.
|
||||
|
||||
There is a `Vagrantfile` to provision a Ubuntu 20.10 VM including the
|
||||
necessary dependencies to build the project. To install Vagrant with a
|
||||
VirtualBox backend and provision the VM on a MacOS host machine run:
|
||||
|
||||
```
|
||||
brew cask install virtualbox
|
||||
brew cask install vagrant
|
||||
vagrant up
|
||||
```
|
||||
|
||||
Log in to the machine. The current host workdir is mounted to `/vagrant`:
|
||||
|
||||
```
|
||||
vagrant ssh
|
||||
sudo su -
|
||||
cd /vagrant
|
||||
```
|
||||
|
||||
### Cargo
|
||||
|
||||
```bash
|
||||
cargo build
|
||||
```
|
||||
|
||||
## Run
|
||||
|
||||
Start the program to instrument the eBPF probe and listen to events:
|
||||
|
||||
```bash
|
||||
cargo run --release
|
||||
```
|
||||
|
||||
In another shell perform some http calls:
|
||||
|
||||
```bash
|
||||
curl -s www.jsonplaceholder.com > /dev/null
|
||||
# Do not use a dns lookup
|
||||
curl -s -H "Host: www.jsonplaceholder.com" 172.67.201.157 > /dev/null
|
||||
```
|
||||
|
||||
The other shell should show the respective events:
|
||||
|
||||
```bash
|
||||
host event: www.jsonplaceholder.com
|
||||
ip event: 172.67.201.157
|
||||
```
|
||||
82
external/libbpf-bootstrap/examples/rust/tracecon/Vagrantfile
vendored
Normal file
82
external/libbpf-bootstrap/examples/rust/tracecon/Vagrantfile
vendored
Normal file
@@ -0,0 +1,82 @@
|
||||
# -*- mode: ruby -*-
|
||||
# vi: set ft=ruby :
|
||||
|
||||
# All Vagrant configuration is done below. The "2" in Vagrant.configure
|
||||
# configures the configuration version (we support older styles for
|
||||
# backwards compatibility). Please don't change it unless you know what
|
||||
# you're doing.
|
||||
Vagrant.configure("2") do |config|
|
||||
# The most common configuration options are documented and commented below.
|
||||
# For a complete reference, please see the online documentation at
|
||||
# https://docs.vagrantup.com.
|
||||
|
||||
# Every Vagrant development environment requires a box. You can search for
|
||||
# boxes at https://vagrantcloud.com/search.
|
||||
config.vm.box = "ubuntu/groovy64"
|
||||
|
||||
# Disable automatic box update checking. If you disable this, then
|
||||
# boxes will only be checked for updates when the user runs
|
||||
# `vagrant box outdated`. This is not recommended.
|
||||
# config.vm.box_check_update = false
|
||||
|
||||
# Create a forwarded port mapping which allows access to a specific port
|
||||
# within the machine from a port on the host machine. In the example below,
|
||||
# accessing "localhost:8080" will access port 80 on the guest machine.
|
||||
# NOTE: This will enable public access to the opened port
|
||||
# config.vm.network "forwarded_port", guest: 80, host: 8080
|
||||
|
||||
# Create a forwarded port mapping which allows access to a specific port
|
||||
# within the machine from a port on the host machine and only allow access
|
||||
# via 127.0.0.1 to disable public access
|
||||
# config.vm.network "forwarded_port", guest: 80, host: 8080, host_ip: "127.0.0.1"
|
||||
|
||||
# Create a private network, which allows host-only access to the machine
|
||||
# using a specific IP.
|
||||
# config.vm.network "private_network", ip: "192.168.33.10"
|
||||
|
||||
# Create a public network, which generally matched to bridged network.
|
||||
# Bridged networks make the machine appear as another physical device on
|
||||
# your network.
|
||||
# config.vm.network "public_network"
|
||||
|
||||
# Share an additional folder to the guest VM. The first argument is
|
||||
# the path on the host to the actual folder. The second argument is
|
||||
# the path on the guest to mount the folder. And the optional third
|
||||
# argument is a set of non-required options.
|
||||
# config.vm.synced_folder ".", "/src", type: "rsync"
|
||||
|
||||
# Provider-specific configuration so you can fine-tune various
|
||||
# backing providers for Vagrant. These expose provider-specific options.
|
||||
# Example for VirtualBox:
|
||||
#
|
||||
config.vm.provider "virtualbox" do |vb|
|
||||
# Display the VirtualBox GUI when booting the machine
|
||||
vb.gui = false
|
||||
|
||||
# Customize the amount of memory on the VM:
|
||||
vb.memory = "16384"
|
||||
vb.cpus = 4
|
||||
end
|
||||
|
||||
#
|
||||
# View the documentation for the provider you are using for more
|
||||
# information on available options.
|
||||
|
||||
# Enable provisioning with a shell script. Additional provisioners such as
|
||||
# Ansible, Chef, Docker, Puppet and Salt are also available. Please see the
|
||||
# documentation for more information about their specific syntax and use.
|
||||
config.vm.provision "shell", inline: <<-SHELL
|
||||
apt-get update -y
|
||||
apt-get install -y \
|
||||
build-essential \
|
||||
curl \
|
||||
libbpf-dev \
|
||||
clang \
|
||||
libelf-dev \
|
||||
linux-tools-$(uname -r)
|
||||
curl https://sh.rustup.rs -sSf | sh -s -- -y
|
||||
bpftool btf dump file \
|
||||
/sys/kernel/btf/vmlinux \
|
||||
format c > /vagrant/src/bpf/vmlinux.h
|
||||
SHELL
|
||||
end
|
||||
23
external/libbpf-bootstrap/examples/rust/tracecon/build.rs
vendored
Normal file
23
external/libbpf-bootstrap/examples/rust/tracecon/build.rs
vendored
Normal file
@@ -0,0 +1,23 @@
|
||||
use std::fs::create_dir_all;
|
||||
use std::path::Path;
|
||||
|
||||
use libbpf_cargo::SkeletonBuilder;
|
||||
|
||||
const SRC: &str = "./src/bpf/tracecon.bpf.c";
|
||||
|
||||
fn main() {
|
||||
// It's unfortunate we cannot use `OUT_DIR` to store the generated skeleton.
|
||||
// Reasons are because the generated skeleton contains compiler attributes
|
||||
// that cannot be `include!()`ed via macro. And we cannot use the `#[path = "..."]`
|
||||
// trick either because you cannot yet `concat!(env!("OUT_DIR"), "/skel.rs")` inside
|
||||
// the path attribute either (see https://github.com/rust-lang/rust/pull/83366).
|
||||
//
|
||||
// However, there is hope! When the above feature stabilizes we can clean this
|
||||
// all up.
|
||||
create_dir_all("./src/bpf/.output").unwrap();
|
||||
let skel = Path::new("./src/bpf/.output/tracecon.skel.rs");
|
||||
SkeletonBuilder::new(SRC)
|
||||
.generate(&skel)
|
||||
.expect("bpf compilation failed");
|
||||
println!("cargo:rerun-if-changed={}", SRC);
|
||||
}
|
||||
162
external/libbpf-bootstrap/examples/rust/tracecon/src/bpf/tracecon.bpf.c
vendored
Normal file
162
external/libbpf-bootstrap/examples/rust/tracecon/src/bpf/tracecon.bpf.c
vendored
Normal file
@@ -0,0 +1,162 @@
|
||||
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
|
||||
#include "vmlinux.h"
|
||||
#include <bpf/bpf_helpers.h>
|
||||
#include <bpf/bpf_core_read.h>
|
||||
#include <bpf/bpf_tracing.h>
|
||||
|
||||
#define memcpy(dest, src, n) __builtin_memcpy((dest), (src), (n))
|
||||
#define HOSTNAME_LEN 84
|
||||
|
||||
const volatile pid_t target_pid = 0;
|
||||
|
||||
/* Copied from: include/netdb.h */
|
||||
struct addrinfo {
|
||||
int ai_flags; /* Input flags. */
|
||||
int ai_family; /* Protocol family for socket. */
|
||||
int ai_socktype; /* Socket type. */
|
||||
int ai_protocol; /* Protocol for socket. */
|
||||
u32 ai_addrlen; /* Length of socket address. */
|
||||
struct sockaddr *ai_addr; /* Socket address for socket. */
|
||||
char *ai_canonname; /* Canonical name for service location. */
|
||||
struct addrinfo *ai_next; /* Pointer to next in list. */
|
||||
};
|
||||
|
||||
struct lookup {
|
||||
char c[84];
|
||||
struct addrinfo **results;
|
||||
};
|
||||
|
||||
struct {
|
||||
__uint(type, BPF_MAP_TYPE_HASH);
|
||||
__uint(max_entries, 10240);
|
||||
__type(key, u32);
|
||||
__type(value, struct lookup);
|
||||
} lookups SEC(".maps");
|
||||
|
||||
struct {
|
||||
__uint(type, BPF_MAP_TYPE_HASH);
|
||||
__uint(max_entries, 10240);
|
||||
__type(key, u32);
|
||||
__type(value, struct lookup);
|
||||
} hostnames SEC(".maps");
|
||||
|
||||
struct {
|
||||
__uint(type, BPF_MAP_TYPE_HASH);
|
||||
__uint(max_entries, 10240);
|
||||
__type(key, u32);
|
||||
__type(value, struct sock *);
|
||||
} sockets SEC(".maps");
|
||||
|
||||
struct {
|
||||
__uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
|
||||
__uint(key_size, sizeof(u32));
|
||||
__uint(value_size, sizeof(u32));
|
||||
} events SEC(".maps");
|
||||
|
||||
enum tag { IP = 0, HOSTNAME = 1 };
|
||||
|
||||
struct event {
|
||||
u8 tag;
|
||||
u8 ip[4];
|
||||
u8 hostname[HOSTNAME_LEN];
|
||||
};
|
||||
|
||||
/* trigger creation of event struct in skeleton code */
|
||||
struct event _event = {};
|
||||
|
||||
static u32 get_tid()
|
||||
{
|
||||
u64 tgid = bpf_get_current_pid_tgid();
|
||||
pid_t pid = tgid >> 32;
|
||||
|
||||
if (target_pid != 0 && target_pid != pid)
|
||||
return 0;
|
||||
return (u32)tgid;
|
||||
}
|
||||
|
||||
SEC("uprobe/getaddrinfo")
|
||||
int BPF_KPROBE(getaddrinfo_enter, const char *hostname, const char *service,
|
||||
const struct addrinfo *hints, struct addrinfo **res)
|
||||
{
|
||||
u32 tid = get_tid();
|
||||
struct lookup lookup = {};
|
||||
|
||||
if (!tid)
|
||||
return 0;
|
||||
bpf_probe_read_user_str(&lookup.c, sizeof(lookup.c), hostname);
|
||||
lookup.results = res;
|
||||
bpf_map_update_elem(&lookups, &tid, &lookup, BPF_ANY);
|
||||
return 0;
|
||||
}
|
||||
|
||||
SEC("uretprobe/getaddrinfo")
|
||||
int BPF_KRETPROBE(getaddrinfo_exit, int ret)
|
||||
{
|
||||
u32 tid = get_tid();
|
||||
struct lookup *lookup;
|
||||
struct addrinfo *result;
|
||||
struct sockaddr_in *addr;
|
||||
struct in_addr ipv4_addr;
|
||||
|
||||
if (!tid)
|
||||
return 0;
|
||||
if (ret != 0)
|
||||
goto cleanup;
|
||||
lookup = bpf_map_lookup_elem(&lookups, &tid);
|
||||
if (!lookup)
|
||||
return 0;
|
||||
bpf_probe_read_user(&result, sizeof(result), lookup->results);
|
||||
bpf_probe_read_user(&addr, sizeof(addr), &result->ai_addr);
|
||||
bpf_probe_read_user(&ipv4_addr, sizeof(ipv4_addr), &addr->sin_addr);
|
||||
bpf_map_update_elem(&hostnames, &ipv4_addr.s_addr, lookup, BPF_ANY);
|
||||
cleanup:
|
||||
bpf_map_delete_elem(&lookups, &tid);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
SEC("kprobe/tcp_v4_connect")
|
||||
int BPF_KPROBE(tcp_v4_connect_enter, struct sock *sk, struct sockaddr *uaddr, int addr_len)
|
||||
{
|
||||
u32 tid = get_tid();
|
||||
|
||||
if (!tid)
|
||||
return 0;
|
||||
bpf_map_update_elem(&sockets, &tid, &sk, 0);
|
||||
return 0;
|
||||
};
|
||||
|
||||
SEC("kretprobe/tcp_v4_connect")
|
||||
int BPF_KRETPROBE(tcp_v4_connect_exit, int ret)
|
||||
{
|
||||
u32 tid = get_tid();
|
||||
struct sock **sockpp;
|
||||
struct lookup *lookup;
|
||||
struct event event = {};
|
||||
u32 ip;
|
||||
|
||||
if (!tid)
|
||||
return 0;
|
||||
if (ret != 0)
|
||||
goto cleanup;
|
||||
sockpp = bpf_map_lookup_elem(&sockets, &tid);
|
||||
if (!sockpp)
|
||||
return 0;
|
||||
ip = BPF_CORE_READ(*sockpp, __sk_common.skc_daddr);
|
||||
lookup = bpf_map_lookup_elem(&hostnames, &ip);
|
||||
if (!lookup) {
|
||||
event.tag = IP;
|
||||
memcpy(&event.ip, &ip, sizeof(event.ip));
|
||||
} else {
|
||||
event.tag = HOSTNAME;
|
||||
memcpy(&event.hostname, &lookup->c, sizeof(lookup->c));
|
||||
bpf_map_delete_elem(&hostnames, &ip);
|
||||
}
|
||||
/* ctx is implied in the signature macro */
|
||||
bpf_perf_event_output(ctx, &events, BPF_F_CURRENT_CPU, &event, sizeof(event));
|
||||
cleanup:
|
||||
bpf_map_delete_elem(&sockets, &tid);
|
||||
return 0;
|
||||
}
|
||||
|
||||
char LICENSE[] SEC("license") = "Dual BSD/GPL";
|
||||
1
external/libbpf-bootstrap/examples/rust/tracecon/src/bpf/vmlinux.h
vendored
Symbolic link
1
external/libbpf-bootstrap/examples/rust/tracecon/src/bpf/vmlinux.h
vendored
Symbolic link
@@ -0,0 +1 @@
|
||||
../../../../../vmlinux/vmlinux.h
|
||||
127
external/libbpf-bootstrap/examples/rust/tracecon/src/main.rs
vendored
Normal file
127
external/libbpf-bootstrap/examples/rust/tracecon/src/main.rs
vendored
Normal file
@@ -0,0 +1,127 @@
|
||||
use anyhow::{anyhow, bail, Result};
|
||||
use core::time::Duration;
|
||||
use libbpf_rs::PerfBufferBuilder;
|
||||
use object::Object;
|
||||
use object::ObjectSymbol;
|
||||
use plain::Plain;
|
||||
use std::fs;
|
||||
use std::net::Ipv4Addr;
|
||||
use std::path::Path;
|
||||
use std::sync::atomic::{AtomicBool, Ordering};
|
||||
use std::sync::Arc;
|
||||
use structopt::StructOpt;
|
||||
|
||||
#[path = "bpf/.output/tracecon.skel.rs"]
|
||||
mod tracecon;
|
||||
use tracecon::*;
|
||||
|
||||
type Event = tracecon_bss_types::event;
|
||||
unsafe impl Plain for Event {}
|
||||
|
||||
#[derive(Debug, StructOpt)]
|
||||
struct Command {
|
||||
/// verbose output
|
||||
#[structopt(long, short)]
|
||||
verbose: bool,
|
||||
/// glibc path
|
||||
#[structopt(long, short, default_value = "/lib/x86_64-linux-gnu/libc.so.6")]
|
||||
glibc: String,
|
||||
#[structopt(long, short)]
|
||||
/// pid to observe
|
||||
pid: Option<i32>,
|
||||
}
|
||||
|
||||
fn bump_memlock_rlimit() -> Result<()> {
|
||||
let rlimit = libc::rlimit {
|
||||
rlim_cur: 128 << 20,
|
||||
rlim_max: 128 << 20,
|
||||
};
|
||||
|
||||
if unsafe { libc::setrlimit(libc::RLIMIT_MEMLOCK, &rlimit) } != 0 {
|
||||
bail!("Failed to increase rlimit");
|
||||
}
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn get_symbol_address(so_path: &str, fn_name: &str) -> Result<usize> {
|
||||
let path = Path::new(so_path);
|
||||
let buffer = fs::read(path)?;
|
||||
let file = object::File::parse(buffer.as_slice())?;
|
||||
|
||||
let mut symbols = file.dynamic_symbols();
|
||||
let symbol = symbols
|
||||
.find(|symbol| {
|
||||
if let Ok(name) = symbol.name() {
|
||||
return name == fn_name;
|
||||
}
|
||||
false
|
||||
})
|
||||
.ok_or(anyhow!("symbol not found"))?;
|
||||
|
||||
Ok(symbol.address() as usize)
|
||||
}
|
||||
|
||||
fn handle_event(_cpu: i32, data: &[u8]) {
|
||||
let mut event = Event::default();
|
||||
plain::copy_from_bytes(&mut event, data).expect("Event data buffer was too short");
|
||||
|
||||
match event.tag {
|
||||
0 => println!("ip event: {}", Ipv4Addr::from(event.ip)),
|
||||
1 => println!("host event: {}", String::from_utf8_lossy(&event.hostname)),
|
||||
_ => {}
|
||||
}
|
||||
}
|
||||
|
||||
fn main() -> Result<()> {
|
||||
let opts = Command::from_args();
|
||||
|
||||
let mut skel_builder = TraceconSkelBuilder::default();
|
||||
if opts.verbose {
|
||||
skel_builder.obj_builder.debug(true);
|
||||
}
|
||||
|
||||
bump_memlock_rlimit()?;
|
||||
let mut open_skel = skel_builder.open()?;
|
||||
if let Some(pid) = opts.pid {
|
||||
open_skel.rodata().target_pid = pid;
|
||||
}
|
||||
let mut skel = open_skel.load()?;
|
||||
let address = get_symbol_address(&opts.glibc, "getaddrinfo")?;
|
||||
|
||||
let _uprobe =
|
||||
skel.progs_mut()
|
||||
.getaddrinfo_enter()
|
||||
.attach_uprobe(false, -1, &opts.glibc, address)?;
|
||||
|
||||
let _uretprobe =
|
||||
skel.progs_mut()
|
||||
.getaddrinfo_exit()
|
||||
.attach_uprobe(true, -1, &opts.glibc, address)?;
|
||||
|
||||
let _kprobe = skel
|
||||
.progs_mut()
|
||||
.tcp_v4_connect_enter()
|
||||
.attach_kprobe(false, "tcp_v4_connect")?;
|
||||
|
||||
let _kretprobe = skel
|
||||
.progs_mut()
|
||||
.tcp_v4_connect_exit()
|
||||
.attach_kprobe(true, "tcp_v4_connect")?;
|
||||
|
||||
let perf = PerfBufferBuilder::new(skel.maps_mut().events())
|
||||
.sample_cb(handle_event)
|
||||
.build()?;
|
||||
|
||||
let running = Arc::new(AtomicBool::new(true));
|
||||
let r = running.clone();
|
||||
ctrlc::set_handler(move || {
|
||||
r.store(false, Ordering::SeqCst);
|
||||
})?;
|
||||
|
||||
while running.load(Ordering::SeqCst) {
|
||||
perf.poll(Duration::from_millis(100))?;
|
||||
}
|
||||
|
||||
Ok(())
|
||||
}
|
||||
Reference in New Issue
Block a user