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jsql.go
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jsql.go
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package main
import (
"crypto/tls"
"errors"
"flag"
jsql "github.com/michaelbironneau/jsql/lib"
"log"
"net"
"net/rpc"
"net/rpc/jsonrpc"
"strconv"
)
type JSQL int
var (
port = flag.Int("port", 5123, "the port to listen on")
secret = flag.String("password", "", "password to require from clients (optional)")
certFile = flag.String("cert", "", "server certificate for TLS (optional)")
keyFile = flag.String("key", "", "server private key for TLS (optional)")
skipVerify = flag.Bool("skip-verify", false, "skip certificate verification (default: false)")
)
func (s *JSQL) Select(arg *jsql.SelectArgs, reply *jsql.Rowset) error {
var (
err error
)
if arg == nil {
return nil //got nil args => return nil reply.
}
if secret != nil && *secret != arg.Auth {
return errors.New("incorrect password")
}
*reply, err = arg.Select()
return err
}
func main() {
flag.Parse()
var (
tlsConfig *tls.Config
l net.Listener
err error
)
if len(*certFile) > 0 && len(*keyFile) > 0 {
tlsConfig = &tls.Config{
InsecureSkipVerify: *skipVerify,
}
tlsConfig.Certificates = make([]tls.Certificate, 1)
tlsConfig.Certificates[0], err = tls.LoadX509KeyPair(*certFile, *keyFile)
if err != nil {
log.Fatalf("Error loading certificate/keyfile: %s", err.Error())
}
l, err = tls.Listen("tcp", "127.0.0.1:"+strconv.Itoa(*port), tlsConfig)
} else {
l, err = net.Listen("tcp", "127.0.0.1:"+strconv.Itoa(*port))
}
defer l.Close()
if err != nil {
log.Fatal(err)
}
log.Print("listening:", l.Addr())
jsql := new(JSQL)
rpc.Register(jsql)
for {
log.Print("waiting for connections...")
c, err := l.Accept()
if err != nil {
log.Printf("accept error: %s", c)
continue
}
log.Printf("connection started: %v", c.RemoteAddr())
go jsonrpc.ServeConn(c)
}
}