55bf1695de
As soon as in warewulf.conf a value for ipaddr6 is defined all nodes will get a derived ipv6 address if not the ipv6 is not explicitly set.
93 lines
2.4 KiB
Go
93 lines
2.4 KiB
Go
package warewulfconf
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"io/ioutil"
|
|
"net"
|
|
"path"
|
|
|
|
"github.com/brotherpowers/ipsubnet"
|
|
"github.com/hpcng/warewulf/internal/pkg/buildconfig"
|
|
"github.com/hpcng/warewulf/internal/pkg/wwlog"
|
|
|
|
"gopkg.in/yaml.v2"
|
|
)
|
|
|
|
var cachedConf ControllerConf
|
|
|
|
var ConfigFile string
|
|
|
|
func init() {
|
|
if ConfigFile == "" {
|
|
ConfigFile = path.Join(buildconfig.SYSCONFDIR(), "warewulf/warewulf.conf")
|
|
}
|
|
}
|
|
|
|
func New() (ControllerConf, error) {
|
|
var ret ControllerConf = *defaultConfig()
|
|
|
|
// Check if cached config is old before re-reading config file
|
|
if !cachedConf.current {
|
|
wwlog.Printf(wwlog.DEBUG, "Opening Warewulf configuration file: %s\n", ConfigFile)
|
|
data, err := ioutil.ReadFile(ConfigFile)
|
|
if err != nil {
|
|
fmt.Printf("Error reading Warewulf configuration file\n")
|
|
return ret, err
|
|
}
|
|
|
|
wwlog.Printf(wwlog.DEBUG, "Unmarshaling the Warewulf configuration\n")
|
|
err = yaml.Unmarshal(data, &ret)
|
|
if err != nil {
|
|
return ret, err
|
|
}
|
|
|
|
// TODO: Need to add comprehensive config file validator
|
|
// TODO: Change function to guess default IP address and/or mask from local system
|
|
if ret.Ipaddr == "" {
|
|
wwlog.Printf(wwlog.ERROR, "IP address is not configured in warewulfd.conf\n")
|
|
return ret, errors.New("no IP Address")
|
|
}
|
|
|
|
if ret.Netmask == "" {
|
|
wwlog.Printf(wwlog.ERROR, "Netmask is not configured in warewulfd.conf\n")
|
|
return ret, errors.New("no netmask")
|
|
}
|
|
|
|
if ret.Network == "" {
|
|
mask := net.IPMask(net.ParseIP(ret.Netmask).To4())
|
|
size, _ := mask.Size()
|
|
|
|
sub := ipsubnet.SubnetCalculator(ret.Ipaddr, size)
|
|
|
|
ret.Network = sub.GetNetworkPortion()
|
|
}
|
|
// check validity of ipv6 net
|
|
if ret.Ipaddr6 != "" {
|
|
_, ipv6net, err := net.ParseCIDR(ret.Ipaddr6)
|
|
if err != nil {
|
|
wwlog.Printf(wwlog.ERROR, "Invalid ipv6 address specified, mut be CIDR notation: %s\n", ret.Ipaddr6)
|
|
return ret, errors.New("invalid ipv6 network")
|
|
}
|
|
if msize, _ := ipv6net.Mask.Size(); msize > 64 {
|
|
wwlog.Printf(wwlog.ERROR, "ipv6 mask size must be smaller than 64\n")
|
|
return ret, errors.New("invalid ipv6 network size")
|
|
}
|
|
}
|
|
if ret.Warewulf.Port == 0 {
|
|
ret.Warewulf.Port = defaultPort
|
|
}
|
|
|
|
wwlog.Printf(wwlog.DEBUG, "Returning warewulf config object\n")
|
|
cachedConf = ret
|
|
cachedConf.current = true
|
|
|
|
} else {
|
|
wwlog.Printf(wwlog.DEBUG, "Returning cached warewulf config object\n")
|
|
// If cached struct isn't empty, use it as the return value
|
|
ret = cachedConf
|
|
}
|
|
|
|
return ret, nil
|
|
}
|