mirror of
https://github.com/42wim/matterbridge.git
synced 2024-12-05 02:39:28 +01:00
148 lines
3.9 KiB
Markdown
148 lines
3.9 KiB
Markdown
[![Build Status](https://travis-ci.org/RackSec/srslog.svg?branch=master)](https://travis-ci.org/RackSec/srslog)
|
|
|
|
# srslog
|
|
|
|
Go has a `syslog` package in the standard library, but it has the following
|
|
shortcomings:
|
|
|
|
1. It doesn't have TLS support
|
|
2. [According to bradfitz on the Go team, it is no longer being maintained.](https://github.com/golang/go/issues/13449#issuecomment-161204716)
|
|
|
|
I agree that it doesn't need to be in the standard library. So, I've
|
|
followed Brad's suggestion and have made a separate project to handle syslog.
|
|
|
|
This code was taken directly from the Go project as a base to start from.
|
|
|
|
However, this _does_ have TLS support.
|
|
|
|
# Usage
|
|
|
|
Basic usage retains the same interface as the original `syslog` package. We
|
|
only added to the interface where required to support new functionality.
|
|
|
|
Switch from the standard library:
|
|
|
|
```
|
|
import(
|
|
//"log/syslog"
|
|
syslog "github.com/RackSec/srslog"
|
|
)
|
|
```
|
|
|
|
You can still use it for local syslog:
|
|
|
|
```
|
|
w, err := syslog.Dial("", "", syslog.LOG_ERR, "testtag")
|
|
```
|
|
|
|
Or to unencrypted UDP:
|
|
|
|
```
|
|
w, err := syslog.Dial("udp", "192.168.0.50:514", syslog.LOG_ERR, "testtag")
|
|
```
|
|
|
|
Or to unencrypted TCP:
|
|
|
|
```
|
|
w, err := syslog.Dial("tcp", "192.168.0.51:514", syslog.LOG_ERR, "testtag")
|
|
```
|
|
|
|
But now you can also send messages via TLS-encrypted TCP:
|
|
|
|
```
|
|
w, err := syslog.DialWithTLSCertPath("tcp+tls", "192.168.0.52:514", syslog.LOG_ERR, "testtag", "/path/to/servercert.pem")
|
|
```
|
|
|
|
And if you need more control over your TLS configuration :
|
|
|
|
```
|
|
pool := x509.NewCertPool()
|
|
serverCert, err := ioutil.ReadFile("/path/to/servercert.pem")
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
pool.AppendCertsFromPEM(serverCert)
|
|
config := tls.Config{
|
|
RootCAs: pool,
|
|
}
|
|
|
|
w, err := DialWithTLSConfig(network, raddr, priority, tag, &config)
|
|
```
|
|
|
|
(Note that in both TLS cases, this uses a self-signed certificate, where the
|
|
remote syslog server has the keypair and the client has only the public key.)
|
|
|
|
And then to write log messages, continue like so:
|
|
|
|
```
|
|
if err != nil {
|
|
log.Fatal("failed to connect to syslog:", err)
|
|
}
|
|
defer w.Close()
|
|
|
|
w.Alert("this is an alert")
|
|
w.Crit("this is critical")
|
|
w.Err("this is an error")
|
|
w.Warning("this is a warning")
|
|
w.Notice("this is a notice")
|
|
w.Info("this is info")
|
|
w.Debug("this is debug")
|
|
w.Write([]byte("these are some bytes"))
|
|
```
|
|
|
|
If you need further control over connection attempts, you can use the DialWithCustomDialer
|
|
function. To continue with the DialWithTLSConfig example:
|
|
|
|
```
|
|
netDialer := &net.Dialer{Timeout: time.Second*5} // easy timeouts
|
|
realNetwork := "tcp" // real network, other vars your dail func can close over
|
|
dial := func(network, addr string) (net.Conn, error) {
|
|
// cannot use "network" here as it'll simply be "custom" which will fail
|
|
return tls.DialWithDialer(netDialer, realNetwork, addr, &config)
|
|
}
|
|
|
|
w, err := DialWithCustomDialer("custom", "192.168.0.52:514", syslog.LOG_ERR, "testtag", dial)
|
|
```
|
|
|
|
Your custom dial func can set timeouts, proxy connections, and do whatever else it needs before returning a net.Conn.
|
|
|
|
# Generating TLS Certificates
|
|
|
|
We've provided a script that you can use to generate a self-signed keypair:
|
|
|
|
```
|
|
pip install cryptography
|
|
python script/gen-certs.py
|
|
```
|
|
|
|
That outputs the public key and private key to standard out. Put those into
|
|
`.pem` files. (And don't put them into any source control. The certificate in
|
|
the `test` directory is used by the unit tests, and please do not actually use
|
|
it anywhere else.)
|
|
|
|
# Running Tests
|
|
|
|
Run the tests as usual:
|
|
|
|
```
|
|
go test
|
|
```
|
|
|
|
But we've also provided a test coverage script that will show you which
|
|
lines of code are not covered:
|
|
|
|
```
|
|
script/coverage --html
|
|
```
|
|
|
|
That will open a new browser tab showing coverage information.
|
|
|
|
# License
|
|
|
|
This project uses the New BSD License, the same as the Go project itself.
|
|
|
|
# Code of Conduct
|
|
|
|
Please note that this project is released with a Contributor Code of Conduct.
|
|
By participating in this project you agree to abide by its terms.
|