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package server
import (
"github.com/spiral/roadrunner"
"net/http"
"strings"
"path"
"github.com/sirupsen/logrus"
"os"
"path/filepath"
"encoding/json"
"fmt"
)
var (
excludeFiles = []string{".php", ".htaccess"}
)
type Request struct {
Protocol string `json:"protocol"`
Uri string `json:"uri"`
Method string `json:"method"`
Headers http.Header `json:"headers"`
Cookies map[string]string `json:"cookies"`
RawQuery string `json:"rawQuery"`
}
// Configures http rr
type HTTPConfig struct {
// ServeStatic enables static file serving from desired root directory.
ServeStatic bool
// Root directory, required when ServeStatic set to true.
Root string
}
// HTTP serves http connections to underlying PHP application using PSR-7 protocol. Context will include request headers,
// parsed files and query, payload will include parsed form data (if any) - todo: do we need to do that?.
type HTTP struct {
cfg HTTPConfig
root http.Dir
rr *roadrunner.Server
}
func NewHTTP(cfg HTTPConfig, server *roadrunner.Server) *HTTP {
h := &HTTP{cfg: cfg, rr: server}
if cfg.ServeStatic {
h.root = http.Dir(h.cfg.Root)
}
return h
}
// ServeHTTP serve using PSR-7 requests passed to underlying application.
func (h *HTTP) ServeHTTP(w http.ResponseWriter, r *http.Request) () {
if h.cfg.ServeStatic && h.serveStatic(w, r) {
// serving static files
return
}
// WHAT TO PUT TO BODY?
p, err := h.buildPayload(r)
rsp, err := h.rr.Exec(p)
if err != nil {
w.Write([]byte(err.Error()))
return
}
// wrapping the response
w.Header().Add("content-type", "text/html;charset=UTF-8")
w.Write(rsp.Body)
}
// serveStatic attempts to serve static file and returns true in case of success, will return false in case if file not
// found, not allowed or on read error.
func (h *HTTP) serveStatic(w http.ResponseWriter, r *http.Request) bool {
fpath := r.URL.Path
if !strings.HasPrefix(fpath, "/") {
fpath = "/" + fpath
}
fpath = path.Clean(fpath)
if isForbidden(fpath) {
logrus.Warningf("attempt to access forbidden file %s", fpath)
return false
}
f, err := h.root.Open(fpath)
if err != nil {
if !os.IsNotExist(err) {
// rr or access error
logrus.Error(err)
}
return false
}
defer f.Close()
d, err := f.Stat()
if err != nil {
// rr error
logrus.Error(err)
return false
}
if d.IsDir() {
// we are not serving directories
return false
}
http.ServeContent(w, r, d.Name(), d.ModTime(), f)
return true
}
// todo: add files support
func (h *HTTP) buildPayload(r *http.Request) (*roadrunner.Payload, error) {
request := Request{
Protocol: r.Proto,
Uri: fmt.Sprintf("%s%s", r.Host, r.URL.String()),
Method: r.Method,
Headers: r.Header,
Cookies: make(map[string]string),
RawQuery: r.URL.RawQuery,
}
logrus.Print(parseData(r))
//logrus.Print(r.MultipartForm.File["kkk"][0].Header)
//logrus.Print(r.MultipartForm.File["kkk"][0].Filename)
// cookies
for _, c := range r.Cookies() {
request.Cookies[c.Name] = c.Value
}
data, _ := json.Marshal(request)
logrus.Info(string(data))
return &roadrunner.Payload{
Context: data,
Body: []byte("lol"),
}, nil
}
// isForbidden returns true if file has forbidden extension.
func isForbidden(path string) bool {
ext := strings.ToLower(filepath.Ext(path))
for _, exl := range excludeFiles {
if ext == exl {
return true
}
}
return false
}
type postData map[string]interface{}
func (d postData) push(k string, v []string) {
if len(v) == 0 {
// doing nothing
return
}
chunks := make([]string, 0)
for _, chunk := range strings.Split(k, "[") {
chunks = append(chunks, strings.Trim(chunk, "]"))
}
d.pushChunk(chunks, v)
}
func (d postData) pushChunk(k []string, v []string) {
if len(v) == 0 {
return
}
head := k[0]
tail := k[1:]
if len(k) == 1 {
d[head] = v[0]
return
}
// unnamed array
if len(tail) == 1 && tail[0] == "" {
d[head] = v
return
}
if p, ok := d[head]; !ok {
d[head] = make(postData)
d[head].(postData).pushChunk(tail, v)
} else {
p.(postData).pushChunk(tail, v)
}
}
// parse incoming data request into JSON (including multipart form data)
func parseData(r *http.Request) (*postData, error) {
if r.Method != "POST" && r.Method != "PUT" && r.Method != "PATCH" {
return nil, nil
}
r.ParseMultipartForm(32 << 20)
data := make(postData)
for k, v := range r.MultipartForm.Value {
data.push(k, v)
}
jd, _ := json.Marshal(data)
logrus.Warning(string(jd))
return nil, nil
}
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