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package main
import (
"bytes"
"fmt"
"github.com/BurntSushi/toml"
"github.com/jessevdk/go-flags"
"github.com/osrg/gobgp/config"
"io/ioutil"
"log"
"net"
"os"
"path/filepath"
)
type QuaggaConfig struct {
id int
config *config.NeighborType
gobgpConfig *config.GlobalType
serverIP net.IP
}
func NewQuaggaConfig(id int, gConfig *config.GlobalType, myConfig *config.NeighborType, server net.IP) *QuaggaConfig {
return &QuaggaConfig{
id: id,
config: myConfig,
gobgpConfig: gConfig,
serverIP: server,
}
}
func (qt *QuaggaConfig) Config() *bytes.Buffer {
buf := bytes.NewBuffer(nil)
buf.WriteString("hostname bgpd\n")
buf.WriteString("password zebra\n")
buf.WriteString(fmt.Sprintf("router bgp %d\n", qt.config.PeerAs))
buf.WriteString(fmt.Sprintf("bgp router-id 192.168.0.%d\n", qt.id))
buf.WriteString(fmt.Sprintf("network 192.168.%d.0/24\n", qt.id))
buf.WriteString(fmt.Sprintf("neighbor %s remote-as %d\n", qt.serverIP, qt.gobgpConfig.As))
buf.WriteString(fmt.Sprintf("neighbor %s password %s\n", qt.serverIP, qt.config.AuthPassword))
buf.WriteString("log file /var/log/quagga/bgpd.log")
return buf
}
func create_config_files(nr int, outputDir string) {
quaggaConfigList := make([]*QuaggaConfig, 0)
gobgpConf := config.BgpType{
Global: config.GlobalType{
As: 65000,
RouterId: net.ParseIP("192.168.255.1"),
},
}
for i := 1; i < nr+1; i++ {
c := config.NeighborType{
PeerAs: 65000 + uint32(i),
NeighborAddress: net.ParseIP(fmt.Sprintf("10.0.0.%d", i)),
AuthPassword: fmt.Sprintf("hoge%d", i),
}
gobgpConf.NeighborList = append(gobgpConf.NeighborList, c)
q := NewQuaggaConfig(i, &gobgpConf.Global, &c, net.ParseIP("10.0.255.1"))
quaggaConfigList = append(quaggaConfigList, q)
os.Mkdir(fmt.Sprintf("%s/q%d", outputDir, i), 0755)
err := ioutil.WriteFile(fmt.Sprintf("%s/q%d/bgpd.conf", outputDir, i), q.Config().Bytes(), 0644)
if err != nil {
log.Fatal(err)
}
}
var buffer bytes.Buffer
encoder := toml.NewEncoder(&buffer)
encoder.Encode(gobgpConf)
err := ioutil.WriteFile(fmt.Sprintf("%s/gobgpd.conf", outputDir), buffer.Bytes(), 0644)
if err != nil {
log.Fatal(err)
}
}
func append_config_files(ar int, outputDir string) {
gobgpConf := config.BgpType{
Global: config.GlobalType{
As: 65000,
RouterId: net.ParseIP("192.168.255.1"),
},
}
c := config.NeighborType{
PeerAs: 65000 + uint32(ar),
NeighborAddress: net.ParseIP(fmt.Sprintf("10.0.0.%d", ar)),
AuthPassword: fmt.Sprintf("hoge%d", ar),
}
q := NewQuaggaConfig(ar, &gobgpConf.Global, &c, net.ParseIP("10.0.255.1"))
os.Mkdir(fmt.Sprintf("%s/q%d", outputDir, ar), 0755)
err := ioutil.WriteFile(fmt.Sprintf("%s/q%d/bgpd.conf", outputDir, ar), q.Config().Bytes(), 0644)
if err != nil {
log.Fatal(err)
}
newConf := config.BgpType{}
_, d_err := toml.DecodeFile(fmt.Sprintf("%s/gobgpd.conf", outputDir), &newConf)
if d_err != nil {
log.Fatal(err)
}
newConf.NeighborList = append(newConf.NeighborList, c)
var buffer bytes.Buffer
encoder := toml.NewEncoder(&buffer)
encoder.Encode(newConf)
e_err := ioutil.WriteFile(fmt.Sprintf("%s/gobgpd.conf", outputDir), buffer.Bytes(), 0644)
if e_err != nil {
log.Fatal(err)
}
}
func main() {
var opts struct {
ClientNumber int `short:"n" long:"client-number" description:"specfying the number of clients" default:"8"`
OutputDir string `short:"c" long:"output" description:"specifing the output directory"`
AppendClient int `short:"a" long:"append" description:"specifing the add client number" default:"0"`
}
parser := flags.NewParser(&opts, flags.Default)
_, err := parser.Parse()
if err != nil {
os.Exit(1)
}
if opts.OutputDir == "" {
opts.OutputDir, _ = filepath.Abs(".")
} else {
if _, err := os.Stat(opts.OutputDir); os.IsNotExist(err) {
os.Mkdir(opts.OutputDir, 0755)
}
}
if opts.AppendClient == 0 {
create_config_files(opts.ClientNumber, opts.OutputDir)
} else {
if _, err := os.Stat(fmt.Sprintf("%s/gobgpd.conf", opts.OutputDir)); os.IsNotExist(err) {
log.Fatal(err)
}
append_config_files(opts.AppendClient, opts.OutputDir)
}
}
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