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package main
import (
"io"
"io/ioutil"
"net/http"
"strconv"
"strings"
)
func SeekerLen(s io.Seeker) int64 {
cur, _ := s.Seek(0, io.SeekCurrent)
end, _ := s.Seek(0, io.SeekEnd)
s.Seek(cur, io.SeekStart)
return end
}
func PostHack(req *http.Request) {
if req.Method == http.MethodPost {
// _method
if method := req.PostFormValue("_method"); method != "" {
req.Method = method
req.PostForm.Del("_method")
}
// _message
if msg := req.PostFormValue("_message"); msg != "" {
req.Header.Set("X-Commit-Message", msg)
req.PostForm.Del("_message")
}
// _body
if file, header, err := req.FormFile("_body"); err == nil {
req.Body = file
for k, v := range header.Header {
req.Header[k] = v
}
if header.Header.Get("Content-Length") == "" {
req.Header.Del("Content-Length")
}
req.ContentLength = SeekerLen(file)
// Clear caches
req.Form = nil
req.PostForm = nil
req.MultipartForm = nil
} else if bodies := req.PostForm["_body"]; len(bodies) > 0 {
body := bodies[0]
if req.PostFormValue("_body_decrlf") != "" {
body = strings.Replace(body, "\r\n", "\n", -1)
}
req.Body = ioutil.NopCloser(strings.NewReader(body))
if req.Header.Get("Content-Length") != "" {
req.Header.Set("Content-Length", strconv.Itoa(len(body)))
}
req.ContentLength = int64(len(body))
// Clear caches
req.Form = nil
req.PostForm = nil
req.MultipartForm = nil
}
}
}
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