66 lines
1.8 KiB
Go
66 lines
1.8 KiB
Go
// Command open-proxy forwards `open`/`xdg-open` requests from a remote VM to
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// the host machine that actually has the browser/GUI.
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//
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// On the host: open-proxy serve
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// On the VM: open-proxy open <file|url|string>...
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//
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// The VM reaches the host's server over an SSH reverse tunnel, e.g.
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//
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// ssh -R 7777:127.0.0.1:7777 vm
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//
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// so the VM's 127.0.0.1:7777 maps to the host's server.
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//
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// As a convenience, when the binary is invoked under the name "open" (e.g. via
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// a symlink early on $PATH), it behaves exactly like `open-proxy open`.
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package main
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import (
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"fmt"
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"os"
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"path/filepath"
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)
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func main() {
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// Shadowed-name mode: when symlinked to `open` or `xdg-open`, act as the
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// client and fall back to that same real opener if the host is unreachable.
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if base := filepath.Base(os.Args[0]); base == "open" || base == "xdg-open" {
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os.Exit(runClient(os.Args[1:], base))
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}
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if len(os.Args) < 2 {
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usage()
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os.Exit(2)
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}
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switch os.Args[1] {
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case "serve":
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os.Exit(runServer(os.Args[2:]))
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case "open":
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os.Exit(runClient(os.Args[2:], defaultOpenerName()))
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case "-h", "--help", "help":
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usage()
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os.Exit(0)
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default:
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fmt.Fprintf(os.Stderr, "open-proxy: unknown command %q\n\n", os.Args[1])
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usage()
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os.Exit(2)
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}
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}
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func usage() {
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fmt.Fprint(os.Stderr, `open-proxy - forward `+"`open`"+` from a remote VM to the host
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Usage:
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open-proxy serve [-addr 127.0.0.1:7777]
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open-proxy open <file|url|string>...
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Environment:
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OPEN_PROXY_ADDR client target / server listen address (default 127.0.0.1:7777)
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OPEN_PROXY_TOKEN shared secret; if set on the server, clients must match
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OPEN_PROXY_MAXSIZE max file transfer size in bytes (default 104857600)
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Tip: symlink the binary to "open" and/or "xdg-open" early on the VM's $PATH.
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When the host is unreachable, it falls back to the real opener on $PATH.
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`)
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}
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