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42 lines
934 B
Go
42 lines
934 B
Go
package proxy
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import (
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"bytes"
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"fmt"
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)
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// bash header
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const header = "#!/bin/bash\n"
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// this command string will check if the socat utility
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// exists, and if it does, will proxy connections to
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// the external IP address.
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const command = "[ -x /usr/bin/socat ] && socat TCP-LISTEN:%s,fork TCP:%s:%s &\n"
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// Proxy stores proxy configuration details mapping
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// a local port to an external IP address with the
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// same port number.
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type Proxy map[string]string
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func (p Proxy) Set(port, ip string) {
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p[port] = ip
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}
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// String converts the proxy configuration details
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// to a bash script.
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func (p Proxy) String() string {
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var buf bytes.Buffer
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buf.WriteString(header)
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for port, ip := range p {
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buf.WriteString(fmt.Sprintf(command, port, ip, port))
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}
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return buf.String()
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}
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// Bytes converts the proxy configuration details
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// to a bash script in byte array format.
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func (p Proxy) Bytes() []byte {
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return []byte(p.String())
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}
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