52 lines
1.1 KiB
Go
52 lines
1.1 KiB
Go
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package server
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import (
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"net"
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"net/http"
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"os"
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"github.com/containous/traefik/whitelist"
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"github.com/vulcand/oxy/forward"
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)
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// NewHeaderRewriter Create a header rewriter
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func NewHeaderRewriter(trustedIPs []string, insecure bool) (forward.ReqRewriter, error) {
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IPs, err := whitelist.NewIP(trustedIPs, insecure)
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if err != nil {
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return nil, err
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}
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h, err := os.Hostname()
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if err != nil {
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h = "localhost"
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}
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return &headerRewriter{
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secureRewriter: &forward.HeaderRewriter{TrustForwardHeader: true, Hostname: h},
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insecureRewriter: &forward.HeaderRewriter{TrustForwardHeader: false, Hostname: h},
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ips: IPs,
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insecure: insecure,
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}, nil
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}
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type headerRewriter struct {
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secureRewriter forward.ReqRewriter
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insecureRewriter forward.ReqRewriter
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insecure bool
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ips *whitelist.IP
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}
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func (h *headerRewriter) Rewrite(req *http.Request) {
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clientIP, _, err := net.SplitHostPort(req.RemoteAddr)
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if err != nil {
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h.secureRewriter.Rewrite(req)
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}
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authorized, _, err := h.ips.Contains(clientIP)
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if h.insecure || authorized {
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h.secureRewriter.Rewrite(req)
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} else {
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h.insecureRewriter.Rewrite(req)
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}
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}
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