58 lines
1.4 KiB
Go
58 lines
1.4 KiB
Go
// This small program is just a small web server created in static mode
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// in order to provide the smallest docker image possible
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package main
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import (
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"flag"
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"log"
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"net/http"
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"strconv"
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"strings"
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)
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var (
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// Def of flags
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portPtr = flag.Int("p", 8043, "The listening port")
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path = flag.String("static", "/srv/http", "The path for the static files")
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headerFlag = flag.String("appendHeader", "", "HTTP response header, specified as `HeaderName:Value` that should be added to all responses.")
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)
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func parseHeaderFlag(headerFlag string) (string, string) {
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if len(headerFlag) == 0 {
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return "", ""
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}
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pieces := strings.SplitN(headerFlag, ":", 2)
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if len(pieces) == 1 {
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return pieces[0], ""
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}
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return pieces[0], pieces[1]
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}
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func main() {
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flag.Parse()
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port := ":" + strconv.FormatInt(int64(*portPtr), 10)
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handler := http.FileServer(http.Dir(*path))
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// Extra headers.
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if len(*headerFlag) > 0 {
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header, headerValue := parseHeaderFlag(*headerFlag)
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if len(header) > 0 && len(headerValue) > 0 {
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fileServer := handler
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handler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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w.Header().Set(header, headerValue)
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fileServer.ServeHTTP(w, r)
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})
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} else {
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log.Println("appendHeader misconfigured; ignoring.")
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}
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}
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http.Handle("/", handler)
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log.Printf("Listening at 0.0.0.0%v...", port)
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log.Fatalln(http.ListenAndServe(port, nil))
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}
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