Cgproxy Versions Save

Fix for libbpf 1.x

• fix execsnoop interrupt after sleep
• support aarch64
• fix in case xtables lock
• no hardcoded path
• service after network-online.target

• Now tested on archlinux, fedora 32, ubuntu 18.04, ubuntu 20.04, deepin 15.11, deepin v20 beta

• fix #5: segfault when program not exist
• expose table, fwmark, mark_newin to config and default use more uncommon route table and mark
• drop CO-RE feature, and use execsnoop-kernel with stable tracepoint, so btf is not required for ubuntu

• avoid kde cgroup override, fix #4
• replace bcc with libbpf, and now memory now only takes about 5M, see https://github.com/iovisor/bcc/issues/1181

• fix processing /proc/<pid>/cgroup
• leave alone if already in preserved cgroup for runing or new process
• cgproxy and cgnoproxy command now have highest priority
• other small optmize

• implement execsnoop part as thread in c++
• build libexecsnoop.so module and load in runtime
• replace python-bcc with bcc as optional make depency
• some small bug fix

• program level proxy control in config, need python-bcc installed
• add python-bcc as optional dependency

{
"port": 12345,
"program_noproxy": ["v2ray", "qv2ray"],
"program_proxy": [],
"cgroup_noproxy": ["/system.slice/v2ray.service"],
"cgroup_proxy": [],
"enable_gateway": false,
"enable_dns": true,
"enable_udp": true,
"enable_tcp": true,
"enable_ipv4": true,
"enable_ipv6": true
}

• add --pid option for cgproxy/cgnproxy

cgproxy --pid <PID>
cgnoproxy --pid <PID>

• config file change to /etc/cgproxy/config.json, so not compatible with 0.0x, read readme
• attach setuid removed
• process communication now based on unix socket, the other program can control through unix socket

• now also support multi proxy/noproxy cgroup using array, for example

  cgroup_proxy=("/proxy.slice" "/system.slice/xxx" "/xxx/xxx/xxx")
  cgroup_noproxy=("/noproxy.slice" "/system.slice/v2ray.service")