func (c *CORS) filter(req zerver.Request, resp zerver.Response, chain zerver.FilterChain) {
headers := resp.Headers()
origin := "*"
if !c.allowAll {
origin = req.GetHeader(_CORS_ORIGIN)
if !c.allow(origin) {
resp.StatusCode(http.StatusForbidden)
return
}
}
headers.Set(_CORS_ALLOWORIGIN, origin)
headers.Set(_CORS_ALLOWMETHODS, c.methods)
headers.Set(_CORS_ALLOWHEADERS, c.headers)
headers.Set(_CORS_ALLOWCREDENTIALS, c.allowCredentials)
if c.exposeHeaders != "" {
headers.Set(_CORS_EXPOSEHEADERS, c.exposeHeaders)
}
if c.preflightMaxage != "" {
headers.Set(_CORS_MAXAGE, c.preflightMaxage)
}
chain(req, resp)
}
func (ri *RequestId) Filter(req zerver.Request, resp zerver.Response, chain zerver.FilterChain) {
if req.ReqMethod() == zerver.METHOD_GET {
chain(req, resp)
return
}
reqId := req.GetHeader(ri.HeaderName)
if reqId == "" {
if ri.PassingOnNoId {
chain(req, resp)
} else {
resp.StatusCode(http.StatusBadRequest)
}
} else {
ip := http2.IpOfAddr(req.RemoteAddr())
id := ip + ":" + reqId
if err := ri.Store.Save(id); err == ErrRequestIDExist {
resp.StatusCode(http.StatusForbidden)
} else if err != nil {
ri.log.Warn(log.M{"msg": "save request id failed", "err": err.Error()})
} else {
chain(req, resp)
ri.Store.Remove(id)
}
}
}
func Send(resp zerver.Response, key string, value interface{}, err error) {
if err != nil {
SendErr(resp, err)
} else {
resp.Send(key, value)
}
}
// Verify xsrf token, used as zerver.FilterFunc
//
// The reason not use "Filter" as function name is to prevent the Xsrf from used as both Component and Filter
func (x *Xsrf) Verify(req zerver.Request, resp zerver.Response, chain zerver.FilterChain) {
if x.VerifyFor(req) {
chain(req, resp)
} else {
resp.StatusCode(http.StatusBadRequest)
}
}
func ReportStatus(resp zerver.Response, status int, err error) {
if err != nil {
SendErr(resp, err)
} else {
resp.ReportStatus(status)
}
}
// Verify xsrf token, used as zerver.FilterFunc
//
// The reason not use "Filter" as function name is to prevent the Xsrf from used as both Component and Filter
func (x *Xsrf) Verify(req zerver.Request, resp zerver.Response, chain zerver.FilterChain) {
if x.VerifyFor(req) {
chain(req, resp)
} else {
resp.ReportBadRequest()
resp.Send("error", x.Error)
}
}
func (j *JWTAuth) Filter(req zerver.Request, resp zerver.Response, chain zerver.FilterChain) {
if tokstr, basic := req.Authorization(); !basic && tokstr != "" {
if tok, err := j.JWT.Parse(tokstr); err == nil {
req.SetAttr(j.AuthTokenAttrName, tok)
chain(req, resp)
return
}
}
resp.ReportUnauthorized()
}
func (l *Log) Filter(req zerver.Request, resp zerver.Response, chain zerver.FilterChain) {
now := time2.Now()
chain(req, resp)
cost := time2.Now().Sub(now)
l.log.Info(log.M{
"method": req.ReqMethod(),
"url": req.URL().String(),
"remote": req.RemoteAddr(),
"userAgent": req.GetHeader(zerver.HEADER_USERAGENT),
"cost": cost.String(),
"statusCode": resp.StatusCode(0),
})
}
func (ri *RequestId) Filter(req zerver.Request, resp zerver.Response, chain zerver.FilterChain) {
if req.Method() == "GET" {
chain(req, resp)
return
}
reqId := req.Header(ri.HeaderName)
if reqId == "" {
if ri.PassingOnNoId {
chain(req, resp)
} else {
resp.ReportBadRequest()
resp.Send("error", ri.Error)
}
} else {
id := req.RemoteIP() + ":" + reqId
if err := ri.Store.Save(id); err == ErrRequestIDExist {
resp.ReportForbidden()
resp.Send("error", ri.ErrorOverlap)
} else if err != nil {
ri.logger.Warnln(err)
} else {
chain(req, resp)
ri.Store.Remove(id)
}
}
}
func (h *Handler) Handle(req zerver.Request, resp zerver.Response) {
req.Wrap(func(req *http.Request, shouldClose bool) (r *http.Request, c bool) {
r, c = req, shouldClose
err := req.ParseMultipartForm(h.MaxMemory)
if err != nil {
handle.SendErr(resp, handle.BadRequest(err))
return
}
if req.MultipartForm == nil || req.MultipartForm.File == nil {
handle.SendErr(resp, h.ErrNoFile)
return
}
files, has := req.MultipartForm.File[h.FileKey]
if !has || len(files) == 0 {
handle.SendErr(resp, h.ErrNoFile)
return
}
file := convertFileHandler(files[0])
if !h.isSuffixSupported(filepath.Ext(file.Filename)) {
handle.SendErr(resp, h.ErrNonImage)
return
}
if file.Size() > h.MaxSize {
handle.SendErr(resp, h.ErrTooLarge)
return
}
fd, err := file.Open()
if err != nil {
handle.SendErr(resp, handle.BadRequest(err))
return
}
defer fd.Close()
path, err := h.SaveImage(fd)
if err != nil {
handle.SendErr(resp, err)
return
}
resp.Send(h.PathKey, path)
return
})
}
func (r *Recovery) Filter(req zerver.Request, resp zerver.Response, chain zerver.FilterChain) {
defer func() {
if err := recover(); err != nil {
resp.StatusCode(http.StatusInternalServerError)
buf := make([]byte, r.Bufsize)
n := runtime.Stack(buf, false)
buf = buf[:n]
r.log.Raw(0, log.LEVEL_ERROR, string(buf))
return
}
}()
chain(req, resp)
}
func Compress(req zerver.Request, resp zerver.Response, chain zerver.FilterChain) {
encoding := req.AcceptEncodings()
if strings.Contains(encoding, zerver.ENCODING_GZIP) {
resp.SetContentEncoding(zerver.ENCODING_GZIP)
resp.Wrap(gzipWrapper)
} else if strings.Contains(encoding, zerver.ENCODING_DEFLATE) {
resp.SetContentEncoding(zerver.ENCODING_DEFLATE)
resp.Wrap(flateWrapper)
} else {
chain(req, resp)
return
}
chain(req, resp)
resp.RemoveHeader("Content-Length")
}
func (r *Recovery) Filter(req zerver.Request, resp zerver.Response, chain zerver.FilterChain) {
defer func() {
e := recover()
if e == nil || r.NoStack {
return
}
resp.ReportInternalServerError()
buffer := bytes.NewBuffer(make([]byte, 0, r.Bufsize))
fmt.Fprint(buffer, e)
buf := buffer.Bytes()
runtime.Stack(buf[len(buf):cap(buf)], false)
req.Logger().Errorln(unsafe2.String(buf[:cap(buf)]))
}()
chain(req, resp)
}
func (j *JSONP) Filter(req zerver.Request, resp zerver.Response, chain zerver.FilterChain) {
if req.ReqMethod() != zerver.METHOD_GET {
chain(req, resp)
return
}
callback := req.Vars().QueryVar(j.CallbackVar)
if callback == "" {
chain(req, resp)
return
}
buffer := bytes.NewBuffer(make([]byte, 0, 256))
bw := wrap.BuffRespWriter{ // to avoid write header 200 first when write callback name
Buffer: buffer,
}
resp.Wrap(func(w http.ResponseWriter, shouldClose bool) (http.ResponseWriter, bool) {
bw.ResponseWriter = w
bw.ShouldClose = shouldClose
return &bw, shouldClose
})
chain(req, resp)
bw.Buffer = nil
_, err := io2.WriteString(resp, callback)
if err == nil {
_, err = io2.WriteString(resp, "(")
if err == nil {
_, err = resp.Write(buffer.Bytes())
if err == nil {
_, err = io2.WriteString(resp, ")")
}
}
}
if err != nil {
j.log.Warn(log.M{"msg": "write jsonp response failed", "err": err.Error()})
}
}
func (l *Log) Filter(req zerver.Request, resp zerver.Response, chain zerver.FilterChain) {
if l.CountTime {
now := time2.Now()
chain(req, resp)
cost := time2.Now().Sub(now)
l.logger.Infoln(
cost.String(),
resp.Status(),
req.Method(),
req.URL().Path,
req.RemoteIP(),
req.UserAgent())
} else {
chain(req, resp)
l.logger.Infoln(
resp.Status(),
req.Method(),
req.URL().Path,
req.RemoteIP(),
req.UserAgent())
}
}
func (l *Log) Filter(req zerver.Request, resp zerver.Response, chain zerver.FilterChain) {
if l.CountTime {
nano := time.Now().UnixNano()
chain(req, resp)
nano = time.Now().UnixNano() - nano
l.logger.Infoln(
time2.ToHuman(nano),
resp.Status(),
req.Method(),
req.URL().Path,
req.RemoteIP(),
req.UserAgent())
} else {
chain(req, resp)
l.logger.Infoln(
resp.Status(),
req.Method(),
req.URL().Path,
req.RemoteIP(),
req.UserAgent())
}
}
func SendErr(resp zerver.Response, err error) {
if err == nil {
panic("there is no error occurred")
}
switch e := errors.Unwrap(err).(type) {
case httperrs.Error:
resp.StatusCode(e.Code())
if e.Code() < int(httperrs.Server) {
resp.Send(Error{e.Error()})
return
}
default:
resp.Logger().Error(log.M{"msg": "internal server error", "error": err.Error()})
resp.StatusCode(http.StatusInternalServerError)
}
}
func globalFilter(req zerver.Request, resp zerver.Response, chain zerver.FilterChain) {
status := resp.StatusCode(0)
if status == http.StatusNotFound {
resp.Headers().Set("Location", path+"/options?from="+url.QueryEscape(req.URL().Path))
resp.StatusCode(http.StatusMovedPermanently)
} else if status == http.StatusMethodNotAllowed {
io2.WriteString(resp, "The pprof interface only support GET request\n")
} else {
chain(req, resp)
}
}
func SendErr(resp zerver.Response, err error) {
switch err := err.(type) {
case httperrs.Error:
resp.ReportStatus(err.Code())
if err.Code() < int(httperrs.Server) {
OnErrLog(resp.Send(KeyError, err.Error()))
return
}
default:
resp.ReportInternalServerError()
}
Logger.Errorln(err.Error())
}
// Create xsrf token, used as zerver.HandleFunc
func (x *Xsrf) Create(req zerver.Request, resp zerver.Response) {
tokBytes, err := x.CreateFor(req)
if err == nil {
resp.ReportServiceUnavailable()
return
}
if req.Method() == "POST" {
resp.ReportCreated()
}
defer x.Pool.Put(tokBytes)
x.logger.Warnln(resp.Send("tokBytes", tokBytes))
}
func SendErr(resp zerver.Response, err error) {
switch err := errors.Unwrap(err).(type) {
case httperrs.Error:
resp.ReportStatus(err.Code())
if err.Code() < int(httperrs.Server) {
if err := resp.Send(KeyError, err.Error()); err != nil {
Logger.Errorln(err.Error())
}
return
}
default:
resp.ReportInternalServerError()
}
Logger.Errorln(err.Error())
}
// Create xsrf token, used as zerver.HandleFunc
func (x *Xsrf) Create(req zerver.Request, resp zerver.Response) {
tokBytes, err := x.CreateFor(req)
if err == nil {
resp.StatusCode(http.StatusServiceUnavailable)
return
}
if req.ReqMethod() == "POST" {
resp.StatusCode(http.StatusCreated)
}
defer x.Pool.Put(tokBytes)
err = resp.Send(Token{string(tokBytes)})
if err != nil {
x.log.Error(log.M{"msg": "send xsrf token", "err": err.Error()})
}
}
func Compress(req zerver.Request, resp zerver.Response, chain zerver.FilterChain) {
encoding := req.GetHeader(zerver.HEADER_ACCEPTENCODING)
respHeaders := resp.Headers()
if strings.Contains(encoding, zerver.ENCODING_GZIP) {
respHeaders.Set(zerver.HEADER_CONTENTENCODING, zerver.ENCODING_GZIP)
resp.Wrap(gzipWrapper)
} else if strings.Contains(encoding, zerver.ENCODING_DEFLATE) {
respHeaders.Set(zerver.HEADER_CONTENTENCODING, zerver.ENCODING_DEFLATE)
resp.Wrap(flateWrapper)
} else {
chain(req, resp)
return
}
chain(req, resp)
respHeaders.Del(zerver.HEADER_CONTENTLENGTH)
}
func (c *CORS) preflight(req zerver.Request, resp zerver.Response, method, headers string) {
origin := "*"
if !c.allowAll {
origin = req.GetHeader(_CORS_ORIGIN)
if !c.allow(origin) {
resp.StatusCode(http.StatusOK)
return
}
}
respHeaders := resp.Headers()
respHeaders.Set(_CORS_ALLOWORIGIN, origin)
upperMethod := strings.ToUpper(method)
for _, m := range c.Methods {
if m == upperMethod {
respHeaders.Add(_CORS_ALLOWMETHODS, method)
break
}
}
for _, h := range strings2.SplitAndTrim(headers, ",") {
for _, ch := range c.Headers {
if strings.ToLower(h) == ch { // c.Headers already ToLowered when Init
respHeaders.Add(_CORS_ALLOWHEADERS, ch)
break
}
}
}
respHeaders.Set(_CORS_ALLOWCREDENTIALS, c.allowCredentials)
if c.exposeHeaders != "" {
respHeaders.Set(_CORS_EXPOSEHEADERS, c.exposeHeaders)
}
if c.preflightMaxage != "" {
respHeaders.Set(_CORS_MAXAGE, c.preflightMaxage)
}
resp.StatusCode(http.StatusOK)
}
func (c *CORS) preflight(req zerver.Request, resp zerver.Response, method, headers string) {
origin := "*"
if !c.allowAll {
origin = req.Header(_CORS_ORIGIN)
if !c.allow(origin) {
goto END
}
}
resp.SetHeader(_CORS_ALLOWORIGIN, origin)
method = strings.ToUpper(method)
for _, m := range c.Methods {
if m == method {
resp.AddHeader(_CORS_ALLOWMETHODS, m)
break
}
}
for _, h := range strings2.SplitAndTrim(headers, ",") {
for _, ch := range c.Headers {
if strings.ToLower(h) == ch { // c.Headers already ToLowered when Init
resp.AddHeader(_CORS_ALLOWHEADERS, ch)
break
}
}
}
resp.SetHeader(_CORS_ALLOWCREDENTIALS, c.allowCredentials)
if c.exposeHeaders != "" {
resp.SetHeader(_CORS_EXPOSEHEADERS, c.exposeHeaders)
}
if c.preflightMaxage != "" {
resp.SetHeader(_CORS_MAXAGE, c.preflightMaxage)
}
END:
resp.ReportOK()
}
func (h *Handler) Handle(req zerver.Request, resp zerver.Response) {
req.Wrap(func(requ *http.Request, shouldClose bool) (r *http.Request, c bool) {
r, c = requ, shouldClose
err := requ.ParseMultipartForm(h.MaxMemory)
if err != nil {
handle.SendBadRequest(resp, err)
return
}
if requ.MultipartForm == nil || requ.MultipartForm.File == nil {
handle.SendErr(resp, h.ErrNoFile)
return
}
files, has := requ.MultipartForm.File[h.FileKey]
if !has || len(files) == 0 {
handle.SendErr(resp, h.ErrNoFile)
return
}
if len(h.Params) > 0 {
for _, param := range h.Params {
if vals := requ.MultipartForm.Value[param]; len(vals) != 0 {
req.SetAttr(param, vals[0])
}
}
}
if h.PreChecker != nil {
if err = h.PreChecker(req); err != nil {
handle.SendErr(resp, err)
return
}
}
file := convertFileHandler(files[0])
if !h.isSuffixSupported(filepath.Ext(file.Filename)) {
handle.SendErr(resp, h.ErrNonImage)
return
}
if file.Size() > h.MaxSize {
handle.SendErr(resp, h.ErrTooLarge)
return
}
fd, err := file.Open()
if err != nil {
handle.SendBadRequest(resp, err)
return
}
defer fd.Close()
if h.log.IsDebugEnable() {
h.log.Debug(log.M{"msg": "file upload", "filename": fd.Filename(), "bytes": fd.Size()})
}
path, err := h.SaveImage(fd, req)
if err != nil {
handle.SendErr(resp, err)
return
}
if h.PostDo != nil {
err := h.PostDo(req)
if err != nil {
h.log.Warn(log.M{"msg": "call post do failed", "err": err.Error()})
}
}
resp.Send(Path{path})
return
})
}
func (j JSONP) Filter(req zerver.Request, resp zerver.Response, chain zerver.FilterChain) {
if req.Method() != "GET" {
chain(req, resp)
return
}
res, _ := req.ResourceMaster().Resource(resource.RES_JSON)
if res == nil {
resp.ReportNotAcceptable()
return
}
callback := req.Param(string(j))
if callback == "" {
resp.ReportBadRequest()
resp.Send("error", "no callback function")
return
}
resp.SetContentType(resource.RES_JSON, res)
_, err := resp.WriteString(callback)
if err != nil {
goto ERROR
}
_, err = resp.WriteString("(")
if err != nil {
goto ERROR
}
chain(req, resp)
_, err = resp.WriteString(")")
if err == nil {
return
}
ERROR:
req.Logger().Warnln(err)
}
func globalFilter(req zerver.Request, resp zerver.Response, chain zerver.FilterChain) {
resp.SetContentType("text/plain", nil)
if resp.Status() == http.StatusNotFound {
resp.SetHeader("Location", path+"/options?from="+url.QueryEscape(req.URL().Path))
resp.ReportMovedPermanently()
} else if resp.Status() == http.StatusMethodNotAllowed {
resp.WriteString("The pprof interface only support GET request\n")
} else {
chain(req, resp)
}
}
func (h *Handler) Handle(req zerver.Request, resp zerver.Response) {
req.Wrap(func(requ *http.Request, shouldClose bool) (r *http.Request, c bool) {
r, c = requ, shouldClose
err := requ.ParseMultipartForm(h.MaxMemory)
if err != nil {
handle.SendBadRequest(resp, err)
return
}
if requ.MultipartForm == nil || requ.MultipartForm.File == nil {
handle.SendErr(resp, h.ErrNoFile)
return
}
files, has := requ.MultipartForm.File[h.FileKey]
if !has || len(files) == 0 {
handle.SendErr(resp, h.ErrNoFile)
return
}
if len(h.Params) > 0 {
for _, param := range h.Params {
if vals := requ.MultipartForm.Value[param]; len(vals) != 0 {
req.SetAttr(param, vals[0])
}
}
}
if h.PreChecker != nil {
if err = h.PreChecker(req); err != nil {
handle.SendErr(resp, err)
return
}
}
file := convertFileHandler(files[0])
if !h.isSuffixSupported(filepath.Ext(file.Filename)) {
handle.SendErr(resp, h.ErrNonImage)
return
}
if file.Size() > h.MaxSize {
handle.SendErr(resp, h.ErrTooLarge)
return
}
fd, err := file.Open()
if err != nil {
handle.SendBadRequest(resp, err)
return
}
defer fd.Close()
h.logger.Debugf("upload file: %s, size: %s\n", fd.Filename(), bytesize.ToHuman(uint64(fd.Size())))
path, err := h.SaveImage(fd, req)
if err != nil {
handle.SendErr(resp, err)
return
}
if h.PostDo != nil {
err := h.PostDo(req)
if err != nil {
h.logger.Warnln("PostDo", err)
}
}
resp.SetContentType(resource.RES_JSON, nil)
resp.Send(h.PathKey, path)
return
})
}
func (NopMethodHandler) Patch(_ zerver.Request, resp zerver.Response) {
resp.StatusCode(http.StatusMethodNotAllowed)
}