mirror of
https://github.com/42wim/matterbridge.git
synced 2024-12-10 19:22:00 -08:00
571 lines
14 KiB
Go
571 lines
14 KiB
Go
package echo
|
|
|
|
import (
|
|
"bytes"
|
|
"encoding/json"
|
|
"encoding/xml"
|
|
"fmt"
|
|
"io"
|
|
"mime/multipart"
|
|
"net"
|
|
"net/http"
|
|
"net/url"
|
|
"os"
|
|
"path/filepath"
|
|
"strings"
|
|
)
|
|
|
|
type (
|
|
// Context represents the context of the current HTTP request. It holds request and
|
|
// response objects, path, path parameters, data and registered handler.
|
|
Context interface {
|
|
// Request returns `*http.Request`.
|
|
Request() *http.Request
|
|
|
|
// SetRequest sets `*http.Request`.
|
|
SetRequest(r *http.Request)
|
|
|
|
// Response returns `*Response`.
|
|
Response() *Response
|
|
|
|
// IsTLS returns true if HTTP connection is TLS otherwise false.
|
|
IsTLS() bool
|
|
|
|
// IsWebSocket returns true if HTTP connection is WebSocket otherwise false.
|
|
IsWebSocket() bool
|
|
|
|
// Scheme returns the HTTP protocol scheme, `http` or `https`.
|
|
Scheme() string
|
|
|
|
// RealIP returns the client's network address based on `X-Forwarded-For`
|
|
// or `X-Real-IP` request header.
|
|
RealIP() string
|
|
|
|
// Path returns the registered path for the handler.
|
|
Path() string
|
|
|
|
// SetPath sets the registered path for the handler.
|
|
SetPath(p string)
|
|
|
|
// Param returns path parameter by name.
|
|
Param(name string) string
|
|
|
|
// ParamNames returns path parameter names.
|
|
ParamNames() []string
|
|
|
|
// SetParamNames sets path parameter names.
|
|
SetParamNames(names ...string)
|
|
|
|
// ParamValues returns path parameter values.
|
|
ParamValues() []string
|
|
|
|
// SetParamValues sets path parameter values.
|
|
SetParamValues(values ...string)
|
|
|
|
// QueryParam returns the query param for the provided name.
|
|
QueryParam(name string) string
|
|
|
|
// QueryParams returns the query parameters as `url.Values`.
|
|
QueryParams() url.Values
|
|
|
|
// QueryString returns the URL query string.
|
|
QueryString() string
|
|
|
|
// FormValue returns the form field value for the provided name.
|
|
FormValue(name string) string
|
|
|
|
// FormParams returns the form parameters as `url.Values`.
|
|
FormParams() (url.Values, error)
|
|
|
|
// FormFile returns the multipart form file for the provided name.
|
|
FormFile(name string) (*multipart.FileHeader, error)
|
|
|
|
// MultipartForm returns the multipart form.
|
|
MultipartForm() (*multipart.Form, error)
|
|
|
|
// Cookie returns the named cookie provided in the request.
|
|
Cookie(name string) (*http.Cookie, error)
|
|
|
|
// SetCookie adds a `Set-Cookie` header in HTTP response.
|
|
SetCookie(cookie *http.Cookie)
|
|
|
|
// Cookies returns the HTTP cookies sent with the request.
|
|
Cookies() []*http.Cookie
|
|
|
|
// Get retrieves data from the context.
|
|
Get(key string) interface{}
|
|
|
|
// Set saves data in the context.
|
|
Set(key string, val interface{})
|
|
|
|
// Bind binds the request body into provided type `i`. The default binder
|
|
// does it based on Content-Type header.
|
|
Bind(i interface{}) error
|
|
|
|
// Validate validates provided `i`. It is usually called after `Context#Bind()`.
|
|
// Validator must be registered using `Echo#Validator`.
|
|
Validate(i interface{}) error
|
|
|
|
// Render renders a template with data and sends a text/html response with status
|
|
// code. Renderer must be registered using `Echo.Renderer`.
|
|
Render(code int, name string, data interface{}) error
|
|
|
|
// HTML sends an HTTP response with status code.
|
|
HTML(code int, html string) error
|
|
|
|
// HTMLBlob sends an HTTP blob response with status code.
|
|
HTMLBlob(code int, b []byte) error
|
|
|
|
// String sends a string response with status code.
|
|
String(code int, s string) error
|
|
|
|
// JSON sends a JSON response with status code.
|
|
JSON(code int, i interface{}) error
|
|
|
|
// JSONPretty sends a pretty-print JSON with status code.
|
|
JSONPretty(code int, i interface{}, indent string) error
|
|
|
|
// JSONBlob sends a JSON blob response with status code.
|
|
JSONBlob(code int, b []byte) error
|
|
|
|
// JSONP sends a JSONP response with status code. It uses `callback` to construct
|
|
// the JSONP payload.
|
|
JSONP(code int, callback string, i interface{}) error
|
|
|
|
// JSONPBlob sends a JSONP blob response with status code. It uses `callback`
|
|
// to construct the JSONP payload.
|
|
JSONPBlob(code int, callback string, b []byte) error
|
|
|
|
// XML sends an XML response with status code.
|
|
XML(code int, i interface{}) error
|
|
|
|
// XMLPretty sends a pretty-print XML with status code.
|
|
XMLPretty(code int, i interface{}, indent string) error
|
|
|
|
// XMLBlob sends an XML blob response with status code.
|
|
XMLBlob(code int, b []byte) error
|
|
|
|
// Blob sends a blob response with status code and content type.
|
|
Blob(code int, contentType string, b []byte) error
|
|
|
|
// Stream sends a streaming response with status code and content type.
|
|
Stream(code int, contentType string, r io.Reader) error
|
|
|
|
// File sends a response with the content of the file.
|
|
File(file string) error
|
|
|
|
// Attachment sends a response as attachment, prompting client to save the
|
|
// file.
|
|
Attachment(file string, name string) error
|
|
|
|
// Inline sends a response as inline, opening the file in the browser.
|
|
Inline(file string, name string) error
|
|
|
|
// NoContent sends a response with no body and a status code.
|
|
NoContent(code int) error
|
|
|
|
// Redirect redirects the request to a provided URL with status code.
|
|
Redirect(code int, url string) error
|
|
|
|
// Error invokes the registered HTTP error handler. Generally used by middleware.
|
|
Error(err error)
|
|
|
|
// Handler returns the matched handler by router.
|
|
Handler() HandlerFunc
|
|
|
|
// SetHandler sets the matched handler by router.
|
|
SetHandler(h HandlerFunc)
|
|
|
|
// Logger returns the `Logger` instance.
|
|
Logger() Logger
|
|
|
|
// Echo returns the `Echo` instance.
|
|
Echo() *Echo
|
|
|
|
// Reset resets the context after request completes. It must be called along
|
|
// with `Echo#AcquireContext()` and `Echo#ReleaseContext()`.
|
|
// See `Echo#ServeHTTP()`
|
|
Reset(r *http.Request, w http.ResponseWriter)
|
|
}
|
|
|
|
context struct {
|
|
request *http.Request
|
|
response *Response
|
|
path string
|
|
pnames []string
|
|
pvalues []string
|
|
query url.Values
|
|
handler HandlerFunc
|
|
store Map
|
|
echo *Echo
|
|
}
|
|
)
|
|
|
|
const (
|
|
defaultMemory = 32 << 20 // 32 MB
|
|
indexPage = "index.html"
|
|
)
|
|
|
|
func (c *context) Request() *http.Request {
|
|
return c.request
|
|
}
|
|
|
|
func (c *context) SetRequest(r *http.Request) {
|
|
c.request = r
|
|
}
|
|
|
|
func (c *context) Response() *Response {
|
|
return c.response
|
|
}
|
|
|
|
func (c *context) IsTLS() bool {
|
|
return c.request.TLS != nil
|
|
}
|
|
|
|
func (c *context) IsWebSocket() bool {
|
|
upgrade := c.request.Header.Get(HeaderUpgrade)
|
|
return upgrade == "websocket" || upgrade == "Websocket"
|
|
}
|
|
|
|
func (c *context) Scheme() string {
|
|
// Can't use `r.Request.URL.Scheme`
|
|
// See: https://groups.google.com/forum/#!topic/golang-nuts/pMUkBlQBDF0
|
|
if c.IsTLS() {
|
|
return "https"
|
|
}
|
|
if scheme := c.request.Header.Get(HeaderXForwardedProto); scheme != "" {
|
|
return scheme
|
|
}
|
|
if scheme := c.request.Header.Get(HeaderXForwardedProtocol); scheme != "" {
|
|
return scheme
|
|
}
|
|
if ssl := c.request.Header.Get(HeaderXForwardedSsl); ssl == "on" {
|
|
return "https"
|
|
}
|
|
if scheme := c.request.Header.Get(HeaderXUrlScheme); scheme != "" {
|
|
return scheme
|
|
}
|
|
return "http"
|
|
}
|
|
|
|
func (c *context) RealIP() string {
|
|
ra := c.request.RemoteAddr
|
|
if ip := c.request.Header.Get(HeaderXForwardedFor); ip != "" {
|
|
ra = strings.Split(ip, ", ")[0]
|
|
} else if ip := c.request.Header.Get(HeaderXRealIP); ip != "" {
|
|
ra = ip
|
|
} else {
|
|
ra, _, _ = net.SplitHostPort(ra)
|
|
}
|
|
return ra
|
|
}
|
|
|
|
func (c *context) Path() string {
|
|
return c.path
|
|
}
|
|
|
|
func (c *context) SetPath(p string) {
|
|
c.path = p
|
|
}
|
|
|
|
func (c *context) Param(name string) string {
|
|
for i, n := range c.pnames {
|
|
if i < len(c.pvalues) {
|
|
if n == name {
|
|
return c.pvalues[i]
|
|
}
|
|
}
|
|
}
|
|
return ""
|
|
}
|
|
|
|
func (c *context) ParamNames() []string {
|
|
return c.pnames
|
|
}
|
|
|
|
func (c *context) SetParamNames(names ...string) {
|
|
c.pnames = names
|
|
}
|
|
|
|
func (c *context) ParamValues() []string {
|
|
return c.pvalues[:len(c.pnames)]
|
|
}
|
|
|
|
func (c *context) SetParamValues(values ...string) {
|
|
c.pvalues = values
|
|
}
|
|
|
|
func (c *context) QueryParam(name string) string {
|
|
if c.query == nil {
|
|
c.query = c.request.URL.Query()
|
|
}
|
|
return c.query.Get(name)
|
|
}
|
|
|
|
func (c *context) QueryParams() url.Values {
|
|
if c.query == nil {
|
|
c.query = c.request.URL.Query()
|
|
}
|
|
return c.query
|
|
}
|
|
|
|
func (c *context) QueryString() string {
|
|
return c.request.URL.RawQuery
|
|
}
|
|
|
|
func (c *context) FormValue(name string) string {
|
|
return c.request.FormValue(name)
|
|
}
|
|
|
|
func (c *context) FormParams() (url.Values, error) {
|
|
if strings.HasPrefix(c.request.Header.Get(HeaderContentType), MIMEMultipartForm) {
|
|
if err := c.request.ParseMultipartForm(defaultMemory); err != nil {
|
|
return nil, err
|
|
}
|
|
} else {
|
|
if err := c.request.ParseForm(); err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
return c.request.Form, nil
|
|
}
|
|
|
|
func (c *context) FormFile(name string) (*multipart.FileHeader, error) {
|
|
_, fh, err := c.request.FormFile(name)
|
|
return fh, err
|
|
}
|
|
|
|
func (c *context) MultipartForm() (*multipart.Form, error) {
|
|
err := c.request.ParseMultipartForm(defaultMemory)
|
|
return c.request.MultipartForm, err
|
|
}
|
|
|
|
func (c *context) Cookie(name string) (*http.Cookie, error) {
|
|
return c.request.Cookie(name)
|
|
}
|
|
|
|
func (c *context) SetCookie(cookie *http.Cookie) {
|
|
http.SetCookie(c.Response(), cookie)
|
|
}
|
|
|
|
func (c *context) Cookies() []*http.Cookie {
|
|
return c.request.Cookies()
|
|
}
|
|
|
|
func (c *context) Get(key string) interface{} {
|
|
return c.store[key]
|
|
}
|
|
|
|
func (c *context) Set(key string, val interface{}) {
|
|
if c.store == nil {
|
|
c.store = make(Map)
|
|
}
|
|
c.store[key] = val
|
|
}
|
|
|
|
func (c *context) Bind(i interface{}) error {
|
|
return c.echo.Binder.Bind(i, c)
|
|
}
|
|
|
|
func (c *context) Validate(i interface{}) error {
|
|
if c.echo.Validator == nil {
|
|
return ErrValidatorNotRegistered
|
|
}
|
|
return c.echo.Validator.Validate(i)
|
|
}
|
|
|
|
func (c *context) Render(code int, name string, data interface{}) (err error) {
|
|
if c.echo.Renderer == nil {
|
|
return ErrRendererNotRegistered
|
|
}
|
|
buf := new(bytes.Buffer)
|
|
if err = c.echo.Renderer.Render(buf, name, data, c); err != nil {
|
|
return
|
|
}
|
|
return c.HTMLBlob(code, buf.Bytes())
|
|
}
|
|
|
|
func (c *context) HTML(code int, html string) (err error) {
|
|
return c.HTMLBlob(code, []byte(html))
|
|
}
|
|
|
|
func (c *context) HTMLBlob(code int, b []byte) (err error) {
|
|
return c.Blob(code, MIMETextHTMLCharsetUTF8, b)
|
|
}
|
|
|
|
func (c *context) String(code int, s string) (err error) {
|
|
return c.Blob(code, MIMETextPlainCharsetUTF8, []byte(s))
|
|
}
|
|
|
|
func (c *context) JSON(code int, i interface{}) (err error) {
|
|
_, pretty := c.QueryParams()["pretty"]
|
|
if c.echo.Debug || pretty {
|
|
return c.JSONPretty(code, i, " ")
|
|
}
|
|
b, err := json.Marshal(i)
|
|
if err != nil {
|
|
return
|
|
}
|
|
return c.JSONBlob(code, b)
|
|
}
|
|
|
|
func (c *context) JSONPretty(code int, i interface{}, indent string) (err error) {
|
|
b, err := json.MarshalIndent(i, "", indent)
|
|
if err != nil {
|
|
return
|
|
}
|
|
return c.JSONBlob(code, b)
|
|
}
|
|
|
|
func (c *context) JSONBlob(code int, b []byte) (err error) {
|
|
return c.Blob(code, MIMEApplicationJSONCharsetUTF8, b)
|
|
}
|
|
|
|
func (c *context) JSONP(code int, callback string, i interface{}) (err error) {
|
|
b, err := json.Marshal(i)
|
|
if err != nil {
|
|
return
|
|
}
|
|
return c.JSONPBlob(code, callback, b)
|
|
}
|
|
|
|
func (c *context) JSONPBlob(code int, callback string, b []byte) (err error) {
|
|
c.response.Header().Set(HeaderContentType, MIMEApplicationJavaScriptCharsetUTF8)
|
|
c.response.WriteHeader(code)
|
|
if _, err = c.response.Write([]byte(callback + "(")); err != nil {
|
|
return
|
|
}
|
|
if _, err = c.response.Write(b); err != nil {
|
|
return
|
|
}
|
|
_, err = c.response.Write([]byte(");"))
|
|
return
|
|
}
|
|
|
|
func (c *context) XML(code int, i interface{}) (err error) {
|
|
_, pretty := c.QueryParams()["pretty"]
|
|
if c.echo.Debug || pretty {
|
|
return c.XMLPretty(code, i, " ")
|
|
}
|
|
b, err := xml.Marshal(i)
|
|
if err != nil {
|
|
return
|
|
}
|
|
return c.XMLBlob(code, b)
|
|
}
|
|
|
|
func (c *context) XMLPretty(code int, i interface{}, indent string) (err error) {
|
|
b, err := xml.MarshalIndent(i, "", indent)
|
|
if err != nil {
|
|
return
|
|
}
|
|
return c.XMLBlob(code, b)
|
|
}
|
|
|
|
func (c *context) XMLBlob(code int, b []byte) (err error) {
|
|
c.response.Header().Set(HeaderContentType, MIMEApplicationXMLCharsetUTF8)
|
|
c.response.WriteHeader(code)
|
|
if _, err = c.response.Write([]byte(xml.Header)); err != nil {
|
|
return
|
|
}
|
|
_, err = c.response.Write(b)
|
|
return
|
|
}
|
|
|
|
func (c *context) Blob(code int, contentType string, b []byte) (err error) {
|
|
c.response.Header().Set(HeaderContentType, contentType)
|
|
c.response.WriteHeader(code)
|
|
_, err = c.response.Write(b)
|
|
return
|
|
}
|
|
|
|
func (c *context) Stream(code int, contentType string, r io.Reader) (err error) {
|
|
c.response.Header().Set(HeaderContentType, contentType)
|
|
c.response.WriteHeader(code)
|
|
_, err = io.Copy(c.response, r)
|
|
return
|
|
}
|
|
|
|
func (c *context) File(file string) (err error) {
|
|
f, err := os.Open(file)
|
|
if err != nil {
|
|
return NotFoundHandler(c)
|
|
}
|
|
defer f.Close()
|
|
|
|
fi, _ := f.Stat()
|
|
if fi.IsDir() {
|
|
file = filepath.Join(file, indexPage)
|
|
f, err = os.Open(file)
|
|
if err != nil {
|
|
return NotFoundHandler(c)
|
|
}
|
|
defer f.Close()
|
|
if fi, err = f.Stat(); err != nil {
|
|
return
|
|
}
|
|
}
|
|
http.ServeContent(c.Response(), c.Request(), fi.Name(), fi.ModTime(), f)
|
|
return
|
|
}
|
|
|
|
func (c *context) Attachment(file, name string) (err error) {
|
|
return c.contentDisposition(file, name, "attachment")
|
|
}
|
|
|
|
func (c *context) Inline(file, name string) (err error) {
|
|
return c.contentDisposition(file, name, "inline")
|
|
}
|
|
|
|
func (c *context) contentDisposition(file, name, dispositionType string) (err error) {
|
|
c.response.Header().Set(HeaderContentDisposition, fmt.Sprintf("%s; filename=%q", dispositionType, name))
|
|
c.File(file)
|
|
return
|
|
}
|
|
|
|
func (c *context) NoContent(code int) error {
|
|
c.response.WriteHeader(code)
|
|
return nil
|
|
}
|
|
|
|
func (c *context) Redirect(code int, url string) error {
|
|
if code < 300 || code > 308 {
|
|
return ErrInvalidRedirectCode
|
|
}
|
|
c.response.Header().Set(HeaderLocation, url)
|
|
c.response.WriteHeader(code)
|
|
return nil
|
|
}
|
|
|
|
func (c *context) Error(err error) {
|
|
c.echo.HTTPErrorHandler(err, c)
|
|
}
|
|
|
|
func (c *context) Echo() *Echo {
|
|
return c.echo
|
|
}
|
|
|
|
func (c *context) Handler() HandlerFunc {
|
|
return c.handler
|
|
}
|
|
|
|
func (c *context) SetHandler(h HandlerFunc) {
|
|
c.handler = h
|
|
}
|
|
|
|
func (c *context) Logger() Logger {
|
|
return c.echo.Logger
|
|
}
|
|
|
|
func (c *context) Reset(r *http.Request, w http.ResponseWriter) {
|
|
c.request = r
|
|
c.response.reset(w)
|
|
c.query = nil
|
|
c.handler = NotFoundHandler
|
|
c.store = nil
|
|
c.path = ""
|
|
c.pnames = nil
|
|
// NOTE: Don't reset because it has to have length c.echo.maxParam at all times
|
|
// c.pvalues = nil
|
|
}
|