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Cmd line flag -c for config location (#108)

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Add command line parsing and a flag `-c` to specify where the config
file should be loaded from.
This commit is contained in:
Stefan Bethke
2018-09-21 12:38:23 +02:00
committed by Joona Hoikkala
parent d66ccffaf6
commit db2a6bc288
2 changed files with 10 additions and 4 deletions
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5
README.md
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@ -115,7 +115,7 @@ See the INSTALL section for information on how to do this.
2) Install acme-dns: `go get github.com/joohoi/acme-dns/...`. This will install acme-dns to `~/go/bin/acme-dns`. 2) Install acme-dns: `go get github.com/joohoi/acme-dns/...`. This will install acme-dns to `~/go/bin/acme-dns`.
3) Edit config.cfg to suit your needs (see [configuration](#configuration)). `acme-dns` will read the configuration file from `/etc/acme-dns/config.cfg` or `./config.cfg`. 3) Edit config.cfg to suit your needs (see [configuration](#configuration)). `acme-dns` will read the configuration file from `/etc/acme-dns/config.cfg` or `./config.cfg`, or a location specified with the `-c` flag.
4) If your system has systemd, you can optionally install acme-dns as a service so that it will start on boot and be tracked by systemd. This also allows us to add the `CAP_NET_BIND_SERVICE` capability so that acme-dns can be run by a user other than root. 4) If your system has systemd, you can optionally install acme-dns as a service so that it will start on boot and be tracked by systemd. This also allows us to add the `CAP_NET_BIND_SERVICE` capability so that acme-dns can be run by a user other than root.
@ -300,6 +300,9 @@ header_name = "X-Forwarded-For"
## Changelog ## Changelog
- unreleased
- New
- Command line flag `-c` to specify location of config file.
- v0.5 - v0.5
- New - New
- Configurable certificate cache directory - Configurable certificate cache directory

9
main.go
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@ -4,6 +4,7 @@ package main
import ( import (
"crypto/tls" "crypto/tls"
"flag"
stdlog "log" stdlog "log"
"net/http" "net/http"
"os" "os"
@ -18,11 +19,13 @@ import (
func main() { func main() {
// Created files are not world writable // Created files are not world writable
syscall.Umask(0077) syscall.Umask(0077)
configPtr := flag.String("c", "/etc/acme-dns/config.cfg", "config file location")
flag.Parse()
// Read global config // Read global config
var err error var err error
if fileIsAccessible("/etc/acme-dns/config.cfg") { if fileIsAccessible(*configPtr) {
log.WithFields(log.Fields{"file": "/etc/acme-dns/config.cfg"}).Info("Using config file") log.WithFields(log.Fields{"file": *configPtr}).Info("Using config file")
Config, err = readConfig("/etc/acme-dns/config.cfg") Config, err = readConfig(*configPtr)
} else if fileIsAccessible("./config.cfg") { } else if fileIsAccessible("./config.cfg") {
log.WithFields(log.Fields{"file": "./config.cfg"}).Info("Using config file") log.WithFields(log.Fields{"file": "./config.cfg"}).Info("Using config file")
Config, err = readConfig("./config.cfg") Config, err = readConfig("./config.cfg")