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vhost: add real ip in first request of one connection

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1. fix #248 host_header_rewrite bug
2. close #270, #127
This commit is contained in:
fatedier 2017-07-01 01:54:37 +08:00
parent b55a24a27e
commit 4cc1663a5f
2 changed files with 31 additions and 17 deletions
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31
utils/vhost/http.go
View File

@ -57,30 +57,31 @@ func GetHttpRequestInfo(c frpNet.Conn) (_ frpNet.Conn, _ map[string]string, err
}
func NewHttpMuxer(listener frpNet.Listener, timeout time.Duration) (*HttpMuxer, error) {
mux, err := NewVhostMuxer(listener, GetHttpRequestInfo, HttpAuthFunc, HttpHostNameRewrite, timeout)
mux, err := NewVhostMuxer(listener, GetHttpRequestInfo, HttpAuthFunc, ModifyHttpRequest, timeout)
return &HttpMuxer{mux}, err
}
func HttpHostNameRewrite(c frpNet.Conn, rewriteHost string) (_ frpNet.Conn, err error) {
func ModifyHttpRequest(c frpNet.Conn, rewriteHost string) (_ frpNet.Conn, err error) {
sc, rd := frpNet.NewShareConn(c)
var buff []byte
if buff, err = hostNameRewrite(rd, rewriteHost); err != nil {
remoteIP := strings.Split(c.RemoteAddr().String(), ":")[0]
if buff, err = hostNameRewrite(rd, rewriteHost, remoteIP); err != nil {
return sc, err
}
err = sc.WriteBuff(buff)
return sc, err
}
func hostNameRewrite(request io.Reader, rewriteHost string) (_ []byte, err error) {
func hostNameRewrite(request io.Reader, rewriteHost string, remoteIP string) (_ []byte, err error) {
buf := pool.GetBuf(1024)
defer pool.PutBuf(buf)
request.Read(buf)
retBuffer, err := parseRequest(buf, rewriteHost)
retBuffer, err := parseRequest(buf, rewriteHost, remoteIP)
return retBuffer, err
}
func parseRequest(org []byte, rewriteHost string) (ret []byte, err error) {
func parseRequest(org []byte, rewriteHost string, remoteIP string) (ret []byte, err error) {
tp := bytes.NewBuffer(org)
// First line: GET /index.html HTTP/1.0
var b []byte
@ -106,10 +107,19 @@ func parseRequest(org []byte, rewriteHost string) (ret []byte, err error) {
// GET /index.html HTTP/1.1
// Host: www.google.com
if req.URL.Host == "" {
changedBuf, err := changeHostName(tp, rewriteHost)
var changedBuf []byte
if rewriteHost != "" {
changedBuf, err = changeHostName(tp, rewriteHost)
}
buf := new(bytes.Buffer)
buf.Write(b)
buf.WriteString(fmt.Sprintf("X-Forwarded-For: %s\n", remoteIP))
buf.WriteString(fmt.Sprintf("X-Real-IP: %s\n", remoteIP))
if len(changedBuf) == 0 {
tp.WriteTo(buf)
} else {
buf.Write(changedBuf)
}
return buf.Bytes(), err
}
@ -117,18 +127,21 @@ func parseRequest(org []byte, rewriteHost string) (ret []byte, err error) {
// GET http://www.google.com/index.html HTTP/1.1
// Host: doesntmatter
// In this case, any Host line is ignored.
if rewriteHost != "" {
hostPort := strings.Split(req.URL.Host, ":")
if len(hostPort) == 1 {
req.URL.Host = rewriteHost
} else if len(hostPort) == 2 {
req.URL.Host = fmt.Sprintf("%s:%s", rewriteHost, hostPort[1])
}
}
firstLine := req.Method + " " + req.URL.String() + " " + req.Proto
buf := new(bytes.Buffer)
buf.WriteString(firstLine)
buf.WriteString(fmt.Sprintf("X-Forwarded-For: %s\n", remoteIP))
buf.WriteString(fmt.Sprintf("X-Real-IP: %s\n", remoteIP))
tp.WriteTo(buf)
return buf.Bytes(), err
}
// parseRequestLine parses "GET /foo HTTP/1.1" into its three parts.
@ -164,7 +177,7 @@ func changeHostName(buff *bytes.Buffer, rewriteHost string) (_ []byte, err error
if portPos == -1 {
hostHeader = fmt.Sprintf("Host: %s\n", rewriteHost)
} else {
hostHeader = fmt.Sprintf("Host: %s:%s\n", rewriteHost, kv[portPos+1:])
hostHeader = fmt.Sprintf("Host: %s:%s\n", rewriteHost, kv[j+portPos+2:])
}
retBuf.WriteString(hostHeader)
peek = peek[i+1:]

5
utils/vhost/vhost.go
View File

@ -182,9 +182,10 @@ func (l *Listener) Accept() (frpNet.Conn, error) {
return nil, fmt.Errorf("Listener closed")
}
// if rewriteFunc is exist and rewriteHost is set
// if rewriteFunc is exist
// rewrite http requests with a modified host header
if l.mux.rewriteFunc != nil && l.rewriteHost != "" {
// if l.rewriteHost is empty, nothing to do
if l.mux.rewriteFunc != nil {
sConn, err := l.mux.rewriteFunc(conn, l.rewriteHost)
if err != nil {
l.Warn("host header rewrite failed: %v", err)