6 files changed, 560 insertions, 0 deletions
diff --git a/http/data.go b/http/data.go
new file mode 100644
index 00000000..865e4760
--- /dev/null
+++ b/http/data.go
@@ -0,0 +1,67 @@
+package http
+
+import (
+	"strings"
+	"net/http"
+)
+
+const maxLevel = 127
+
+type dataTree map[string]interface{}
+
+// parsePost parses incoming request body into data tree.
+func parsePost(r *http.Request) (dataTree, error) {
+	data := make(dataTree)
+
+	for k, v := range r.PostForm {
+		data.push(k, v)
+	}
+
+	for k, v := range r.MultipartForm.Value {
+		data.push(k, v)
+	}
+
+	return data, nil
+}
+
+func (d dataTree) push(k string, v []string) {
+	if len(v) == 0 {
+		// skip empty values
+		return
+	}
+
+	indexes := make([]string, 0)
+	for _, index := range strings.Split(k, "[") {
+		indexes = append(indexes, strings.Trim(index, "]"))
+	}
+
+	if len(indexes) <= maxLevel {
+		d.mount(indexes, v)
+	}
+}
+
+// mount mounts data tree recursively.
+func (d dataTree) mount(i []string, v []string) {
+	if len(v) == 0 || v[0] == "" {
+		return
+	}
+
+	if len(i) == 1 {
+		// single value context
+		d[i[0]] = v[0]
+		return
+	}
+
+	if len(i) == 2 && i[1] == "" {
+		// non associated array of elements
+		d[i[0]] = v
+		return
+	}
+
+	if p, ok := d[i[0]]; ok {
+		p.(dataTree).mount(i[1:], v)
+	}
+
+	d[i[0]] = make(dataTree)
+	d[i[0]].(dataTree).mount(i[1:], v)
+}
diff --git a/http/request.go b/http/request.go
new file mode 100644
index 00000000..572d7d6a
--- /dev/null
+++ b/http/request.go
@@ -0,0 +1,137 @@
+package http
+
+import (
+	"net/http"
+	"encoding/json"
+	"github.com/spiral/roadrunner"
+	"strings"
+	"io/ioutil"
+	"fmt"
+)
+
+const (
+	defaultMaxMemory = 32 << 20 // 32 MB
+)
+
+// Request maps net/http requests to PSR7 compatible structure and managed state of temporary uploaded files.
+type Request struct {
+	// Protocol includes HTTP protocol version.
+	Protocol string `json:"protocol"`
+
+	// Method contains name of HTTP method used for the request.
+	Method string `json:"method"`
+
+	// Uri contains full request Uri with scheme and query.
+	Uri string `json:"uri"`
+
+	// Headers contains list of request headers.
+	Headers http.Header `json:"headers"`
+
+	// Cookies contains list of request cookies.
+	Cookies map[string]string `json:"cookies"`
+
+	// RawQuery contains non parsed query string (to be parsed on php end).
+	RawQuery string `json:"rawQuery"`
+
+	// Parsed indicates that request body has been parsed on RR end.
+	Parsed bool `json:"parsed"`
+
+	// Uploads contains list of uploaded files, their names, sized and associations with temporary files.
+	Uploads *Uploads `json:"uploads"`
+
+	// request body can be parsedData or []byte
+	body interface{}
+}
+
+// NewRequest creates new PSR7 compatible request using net/http request.
+func NewRequest(r *http.Request) (req *Request, err error) {
+	req = &Request{
+		Protocol: r.Proto,
+		Method:   r.Method,
+		Uri:      uri(r),
+		Headers:  r.Header,
+		Cookies:  make(map[string]string),
+		RawQuery: r.URL.RawQuery,
+	}
+
+	for _, c := range r.Cookies() {
+		req.Cookies[c.Name] = c.Value
+	}
+
+	if !req.parsable() {
+		req.body, err = ioutil.ReadAll(r.Body)
+		return req, err
+	}
+
+	if err = r.ParseMultipartForm(defaultMaxMemory); err != nil {
+		return nil, err
+	}
+
+	if req.body, err = parsePost(r); err != nil {
+		return nil, err
+	}
+
+	if req.Uploads, err = parseUploads(r); err != nil {
+		return nil, err
+	}
+
+	req.Parsed = true
+	return req, nil
+}
+
+// OpenUploads moves all uploaded files to temporary directory so it can be given to php later.
+func (r *Request) OpenUploads(tmpDir string) error {
+	if r.Uploads == nil {
+		return nil
+	}
+
+	return r.Uploads.OpenUploads(tmpDir)
+}
+
+// Close clears all temp file uploads
+func (r *Request) Close() {
+	if r.Uploads == nil {
+		return
+	}
+
+	r.Uploads.Clear()
+}
+
+// Payload request marshaled RoadRunner payload based on PSR7 data. Default encode method is JSON. Make sure to open
+// files prior to calling this method.
+func (r *Request) Payload() (p *roadrunner.Payload, err error) {
+	p = &roadrunner.Payload{}
+
+	if p.Context, err = json.Marshal(r); err != nil {
+		return nil, err
+	}
+
+	if r.Parsed {
+		if p.Body, err = json.Marshal(r.body); err != nil {
+			return nil, err
+		}
+	} else if r.body != nil {
+		p.Body = r.body.([]byte)
+	}
+
+	return p, nil
+}
+
+// parsable returns true if request payload can be parsed (POST dataTree, file tree).
+func (r *Request) parsable() bool {
+	if r.Method != "POST" && r.Method != "PUT" && r.Method != "PATCH" {
+		return false
+	}
+
+	ct := r.Headers.Get("content-type")
+	return strings.Contains(ct, "multipart/form-data") || ct == "application/x-www-form-urlencoded"
+}
+
+// uri fetches full uri from request in a form of string (including https scheme if TLS connection is enabled).
+func uri(r *http.Request) string {
+	if r.TLS != nil {
+		return fmt.Sprintf("https://%s%s", r.Host, r.URL.String())
+	}
+
+	return fmt.Sprintf("http://%s%s", r.Host, r.URL.String())
+}
diff --git a/http/response.go b/http/response.go
new file mode 100644
index 00000000..d35669c4
--- /dev/null
+++ b/http/response.go
@@ -0,0 +1,42 @@
+package http
+
+import (
+	"net/http"
+	"encoding/json"
+	"github.com/spiral/roadrunner"
+)
+
+// Response handles PSR7 response logic.
+type Response struct {
+	// Status contains response status.
+	Status int `json:"status"`
+
+	// Headers contains list of response headers.
+	Headers map[string][]string `json:"headers"`
+
+	// associated body payload.
+	body []byte
+}
+
+// NewResponse creates new response based on given roadrunner payload.
+func NewResponse(p *roadrunner.Payload) (*Response, error) {
+	r := &Response{body: p.Body}
+	if err := json.Unmarshal(p.Context, r); err != nil {
+		return nil, err
+	}
+
+	return r, nil
+}
+
+// Write writes response headers, status and body into ResponseWriter.
+func (r *Response) Write(w http.ResponseWriter) {
+	for k, v := range r.Headers {
+		for _, h := range v {
+			w.Header().Add(k, h)
+
+		}
+	}
+
+	w.WriteHeader(r.Status)
+	w.Write(r.body)
+}
diff --git a/http/server.go b/http/server.go
new file mode 100644
index 00000000..363dca2d
--- /dev/null
+++ b/http/server.go
@@ -0,0 +1,82 @@
+package http
+
+import (
+	"github.com/spiral/roadrunner"
+	"net/http"
+)
+
+// Configures RoadRunner HTTP server.
+type Config struct {
+	// serve enables static file serving from desired root directory.
+	ServeStatic bool
+
+	// Root directory, required when serve set to true.
+	Root string
+
+	// UploadsDir contains name of temporary directory to store uploaded files passed to underlying PHP process.
+	UploadsDir string
+}
+
+// Server 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 dataTree (if any).
+type Server struct {
+	cfg    Config
+	static *staticServer
+	rr     *roadrunner.Server
+}
+
+// NewServer returns new instance of HTTP PSR7 server.
+func NewServer(cfg Config, server *roadrunner.Server) *Server {
+	h := &Server{cfg: cfg, rr: server}
+
+	if cfg.ServeStatic {
+		h.static = &staticServer{root: http.Dir(h.cfg.Root)}
+	}
+
+	return h
+}
+
+// ServeHTTP serve using PSR-7 requests passed to underlying application. Attempts to serve static files first if enabled.
+func (srv *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) () {
+	if srv.cfg.ServeStatic && srv.static.serve(w, r) {
+		return
+	}
+
+	req, err := NewRequest(r)
+	if err != nil {
+		srv.sendError(w, r, err)
+		return
+	}
+
+	if err = req.OpenUploads(srv.cfg.UploadsDir); err != nil {
+		srv.sendError(w, r, err)
+		return
+	}
+	defer req.Close()
+
+	p, err := req.Payload()
+	if err != nil {
+		srv.sendError(w, r, err)
+		return
+	}
+
+	rsp, err := srv.rr.Exec(p)
+	if err != nil {
+		srv.sendError(w, r, err)
+		return
+	}
+
+	resp, err := NewResponse(rsp)
+	if err != nil {
+		srv.sendError(w, r, err)
+		return
+	}
+
+	resp.Write(w)
+}
+
+// sendError sends error
+func (srv *Server) sendError(w http.ResponseWriter, r *http.Request, err error) {
+	w.WriteHeader(500)
+	w.Write([]byte(err.Error()))
+}
diff --git a/http/static.go b/http/static.go
new file mode 100644
index 00000000..bfcb87c2
--- /dev/null
+++ b/http/static.go
@@ -0,0 +1,70 @@
+package http
+
+import (
+	"net/http"
+	"strings"
+	"path"
+	"github.com/sirupsen/logrus"
+	"os"
+	"path/filepath"
+)
+
+var (
+	forbiddenFiles = []string{".php", ".htaccess"}
+)
+
+// staticServer serves static files
+type staticServer struct {
+	root http.Dir
+}
+
+// serve 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 (svr *staticServer) serve(w http.ResponseWriter, r *http.Request) bool {
+	fpath := r.URL.Path
+	if !strings.HasPrefix(fpath, "/") {
+		fpath = "/" + fpath
+	}
+	fpath = path.Clean(fpath)
+
+	if svr.forbidden(fpath) {
+		logrus.Warningf("attempt to access forbidden file %s", fpath) // todo: better logs
+		return false
+	}
+
+	f, err := svr.root.Open(fpath)
+	if err != nil {
+		if !os.IsNotExist(err) {
+			logrus.Error(err) //todo: rr or access error
+		}
+
+		return false
+	}
+	defer f.Close()
+
+	d, err := f.Stat()
+	if err != nil {
+		logrus.Error(err) //todo: rr or access error
+		return false
+	}
+
+	if d.IsDir() {
+		// do not serve directories
+		return false
+	}
+
+	http.ServeContent(w, r, d.Name(), d.ModTime(), f)
+	return true
+}
+
+// forbidden returns true if file has forbidden extension.
+func (svr *staticServer) forbidden(path string) bool {
+	ext := strings.ToLower(filepath.Ext(path))
+	for _, exl := range forbiddenFiles {
+		if ext == exl {
+			return true
+		}
+	}
+
+	return false
+}
diff --git a/http/uploads.go b/http/uploads.go
new file mode 100644
index 00000000..1b851e6e
--- /dev/null
+++ b/http/uploads.go
@@ -0,0 +1,162 @@
+package http
+
+import (
+	"mime/multipart"
+	"encoding/json"
+	"log"
+	"strings"
+	"net/http"
+	"io/ioutil"
+	"io"
+	"sync"
+)
+
+// FileUpload represents singular file wrapUpload.
+type FileUpload struct {
+	// Name contains filename specified by the client.
+	Name string `json:"name"`
+
+	// MimeType contains mime-type provided by the client.
+	MimeType string `json:"mimetype"`
+
+	// Size of the uploaded file.
+	Size int64 `json:"size"`
+
+	// Error indicates file upload error (if any). See http://php.net/manual/en/features.file-upload.errors.php
+	Error int
+
+	// TempFilename points to temporary file location.
+	TempFilename string `json:"tempFilename"`
+
+	// associated file header
+	header *multipart.FileHeader
+}
+
+func (f *FileUpload) Open(tmpDir string) error {
+	file, err := f.header.Open()
+	if err != nil {
+		return err
+	}
+
+	defer file.Close()
+
+	tmp, err := ioutil.TempFile(tmpDir, "upload")
+	if err != nil {
+		return err
+	}
+
+	f.TempFilename = tmp.Name()
+	defer tmp.Close()
+
+	f.Size, err = io.Copy(tmp, file)
+	return err
+}
+
+func wrapUpload(f *multipart.FileHeader) *FileUpload {
+	log.Print(f.Header)
+	return &FileUpload{
+		Name:     f.Filename,
+		MimeType: f.Header.Get("Content-Type"),
+		header:   f,
+	}
+}
+
+type fileTree map[string]interface{}
+
+func (d fileTree) push(k string, v []*FileUpload) {
+	if len(v) == 0 {
+		// skip empty values
+		return
+	}
+
+	indexes := make([]string, 0)
+	for _, index := range strings.Split(k, "[") {
+		indexes = append(indexes, strings.Trim(index, "]"))
+	}
+
+	if len(indexes) <= maxLevel {
+		d.mount(indexes, v)
+	}
+}
+
+// mount mounts data tree recursively.
+func (d fileTree) mount(i []string, v []*FileUpload) {
+	if len(v) == 0 {
+		return
+	}
+
+	if len(i) == 1 {
+		// single value context
+		d[i[0]] = v[0]
+		return
+	}
+
+	if len(i) == 2 && i[1] == "" {
+		// non associated array of elements
+		d[i[0]] = v
+		return
+	}
+
+	if p, ok := d[i[0]]; ok {
+		p.(fileTree).mount(i[1:], v)
+	}
+
+	d[i[0]] = make(fileTree)
+	d[i[0]].(fileTree).mount(i[1:], v)
+}
+
+// tree manages uploaded files tree and temporary files.
+type Uploads struct {
+	// pre processed data tree for Uploads.
+	tree fileTree
+
+	// flat list of all file Uploads.
+	list []*FileUpload
+}
+
+// MarshalJSON marshal tree tree into JSON.
+func (u *Uploads) MarshalJSON() ([]byte, error) {
+	return json.Marshal(u.tree)
+}
+
+// OpenUploads moves all uploaded files to temp directory, return error in case of issue with temp directory. File errors
+// will be handled individually. @todo: do we need it?
+func (u *Uploads) OpenUploads(tmpDir string) error {
+	var wg sync.WaitGroup
+	for _, f := range u.list {
+		wg.Add(1)
+		go func(f *FileUpload) {
+			defer wg.Done()
+			f.Open(tmpDir)
+		}(f)
+	}
+
+	wg.Wait()
+	log.Print(u.list)
+	return nil
+}
+
+// Clear deletes all temporary files.
+func (u *Uploads) Clear() {
+
+}
+
+// parse incoming dataTree request into JSON (including multipart form dataTree)
+func parseUploads(r *http.Request) (*Uploads, error) {
+	u := &Uploads{
+		tree: make(fileTree),
+		list: make([]*FileUpload, 0),
+	}
+
+	for k, v := range r.MultipartForm.File {
+		files := make([]*FileUpload, 0, len(v))
+		for _, f := range v {
+			files = append(files, wrapUpload(f))
+		}
+
+		u.list = append(u.list, files...)
+		u.tree.push(k, files)
+	}
+
+	return u, nil
+}