mirror of
https://github.com/astaxie/beego.git
synced 2024-11-05 05:40:54 +00:00
421 lines
10 KiB
Go
421 lines
10 KiB
Go
package beego
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import (
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"bytes"
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"compress/flate"
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"compress/gzip"
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"crypto/hmac"
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"crypto/sha1"
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"encoding/base64"
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"encoding/json"
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"encoding/xml"
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"errors"
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"fmt"
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"github.com/astaxie/beego/session"
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"html/template"
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"io"
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"io/ioutil"
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"mime/multipart"
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"net/http"
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"net/url"
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"os"
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"path"
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"strconv"
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"strings"
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"time"
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)
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type Controller struct {
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Ctx *Context
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Data map[interface{}]interface{}
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ChildName string
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TplNames string
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Layout string
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TplExt string
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_xsrf_token string
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gotofunc string
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CruSession session.SessionStore
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XSRFExpire int
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}
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type ControllerInterface interface {
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Init(ct *Context, cn string)
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Prepare()
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Get()
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Post()
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Delete()
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Put()
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Head()
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Patch()
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Options()
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Finish()
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Render() error
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}
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func (c *Controller) Init(ctx *Context, cn string) {
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c.Data = make(map[interface{}]interface{})
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c.Layout = ""
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c.TplNames = ""
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c.ChildName = cn
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c.Ctx = ctx
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c.TplExt = "tpl"
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}
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func (c *Controller) Prepare() {
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}
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func (c *Controller) Finish() {
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}
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func (c *Controller) Destructor() {
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if c.CruSession != nil {
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c.CruSession.SessionRelease()
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}
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}
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func (c *Controller) Get() {
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http.Error(c.Ctx.ResponseWriter, "Method Not Allowed", 405)
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}
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func (c *Controller) Post() {
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http.Error(c.Ctx.ResponseWriter, "Method Not Allowed", 405)
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}
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func (c *Controller) Delete() {
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http.Error(c.Ctx.ResponseWriter, "Method Not Allowed", 405)
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}
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func (c *Controller) Put() {
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http.Error(c.Ctx.ResponseWriter, "Method Not Allowed", 405)
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}
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func (c *Controller) Head() {
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http.Error(c.Ctx.ResponseWriter, "Method Not Allowed", 405)
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}
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func (c *Controller) Patch() {
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http.Error(c.Ctx.ResponseWriter, "Method Not Allowed", 405)
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}
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func (c *Controller) Options() {
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http.Error(c.Ctx.ResponseWriter, "Method Not Allowed", 405)
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}
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func (c *Controller) Render() error {
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rb, err := c.RenderBytes()
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if err != nil {
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return err
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} else {
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c.Ctx.ResponseWriter.Header().Set("Content-Type", "text/html; charset=utf-8")
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c.writeToWriter(rb)
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}
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return nil
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}
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func (c *Controller) RenderString() (string, error) {
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b, e := c.RenderBytes()
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return string(b), e
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}
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func (c *Controller) RenderBytes() ([]byte, error) {
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//if the controller has set layout, then first get the tplname's content set the content to the layout
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if c.Layout != "" {
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if c.TplNames == "" {
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c.TplNames = c.ChildName + "/" + strings.ToLower(c.Ctx.Request.Method) + "." + c.TplExt
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}
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if RunMode == "dev" {
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BuildTemplate(ViewsPath)
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}
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subdir := path.Dir(c.TplNames)
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_, file := path.Split(c.TplNames)
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newbytes := bytes.NewBufferString("")
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if _, ok := BeeTemplates[subdir]; !ok {
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panic("can't find templatefile in the path:" + c.TplNames)
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return []byte{}, errors.New("can't find templatefile in the path:" + c.TplNames)
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}
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BeeTemplates[subdir].ExecuteTemplate(newbytes, file, c.Data)
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tplcontent, _ := ioutil.ReadAll(newbytes)
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c.Data["LayoutContent"] = template.HTML(string(tplcontent))
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subdir = path.Dir(c.Layout)
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_, file = path.Split(c.Layout)
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ibytes := bytes.NewBufferString("")
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err := BeeTemplates[subdir].ExecuteTemplate(ibytes, file, c.Data)
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if err != nil {
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Trace("template Execute err:", err)
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}
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icontent, _ := ioutil.ReadAll(ibytes)
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return icontent, nil
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} else {
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if c.TplNames == "" {
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c.TplNames = c.ChildName + "/" + strings.ToLower(c.Ctx.Request.Method) + "." + c.TplExt
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}
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if RunMode == "dev" {
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BuildTemplate(ViewsPath)
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}
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subdir := path.Dir(c.TplNames)
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_, file := path.Split(c.TplNames)
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ibytes := bytes.NewBufferString("")
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if _, ok := BeeTemplates[subdir]; !ok {
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panic("can't find templatefile in the path:" + c.TplNames)
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return []byte{}, errors.New("can't find templatefile in the path:" + c.TplNames)
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}
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err := BeeTemplates[subdir].ExecuteTemplate(ibytes, file, c.Data)
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if err != nil {
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Trace("template Execute err:", err)
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}
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icontent, _ := ioutil.ReadAll(ibytes)
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return icontent, nil
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}
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return []byte{}, nil
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}
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func (c *Controller) writeToWriter(rb []byte) {
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output_writer := c.Ctx.ResponseWriter.(io.Writer)
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if EnableGzip == true && c.Ctx.Request.Header.Get("Accept-Encoding") != "" {
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splitted := strings.SplitN(c.Ctx.Request.Header.Get("Accept-Encoding"), ",", -1)
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encodings := make([]string, len(splitted))
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for i, val := range splitted {
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encodings[i] = strings.TrimSpace(val)
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}
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for _, val := range encodings {
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if val == "gzip" {
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c.Ctx.ResponseWriter.Header().Set("Content-Encoding", "gzip")
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output_writer, _ = gzip.NewWriterLevel(c.Ctx.ResponseWriter, gzip.BestSpeed)
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break
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} else if val == "deflate" {
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c.Ctx.ResponseWriter.Header().Set("Content-Encoding", "deflate")
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output_writer, _ = flate.NewWriter(c.Ctx.ResponseWriter, flate.BestSpeed)
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break
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}
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}
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} else {
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c.Ctx.SetHeader("Content-Length", strconv.Itoa(len(rb)), true)
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}
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output_writer.Write(rb)
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switch output_writer.(type) {
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case *gzip.Writer:
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output_writer.(*gzip.Writer).Close()
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case *flate.Writer:
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output_writer.(*flate.Writer).Close()
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case io.WriteCloser:
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output_writer.(io.WriteCloser).Close()
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}
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}
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func (c *Controller) Redirect(url string, code int) {
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c.Ctx.Redirect(code, url)
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}
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func (c *Controller) Abort(code string) {
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panic(code)
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}
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func (c *Controller) ServeJson(encoding ...bool) {
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var content []byte
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var err error
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if RunMode == "prod" {
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content, err = json.Marshal(c.Data["json"])
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} else {
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content, err = json.MarshalIndent(c.Data["json"], "", " ")
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}
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if err != nil {
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http.Error(c.Ctx.ResponseWriter, err.Error(), http.StatusInternalServerError)
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return
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}
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c.Ctx.ResponseWriter.Header().Set("Content-Type", "application/json;charset=UTF-8")
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if len(encoding) > 0 && encoding[0] == true {
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content = []byte(stringsToJson(string(content)))
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}
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c.writeToWriter(content)
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}
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func (c *Controller) ServeJsonp() {
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var content []byte
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var err error
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if RunMode == "prod" {
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content, err = json.Marshal(c.Data["jsonp"])
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} else {
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content, err = json.MarshalIndent(c.Data["jsonp"], "", " ")
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}
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if err != nil {
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http.Error(c.Ctx.ResponseWriter, err.Error(), http.StatusInternalServerError)
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return
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}
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callback := c.Ctx.Request.Form.Get("callback")
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if callback == "" {
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http.Error(c.Ctx.ResponseWriter, `"callback" parameter required`, http.StatusInternalServerError)
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return
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}
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callback_content := bytes.NewBufferString(callback)
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callback_content.WriteString("(")
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callback_content.Write(content)
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callback_content.WriteString(");\r\n")
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c.Ctx.ResponseWriter.Header().Set("Content-Type", "application/javascript;charset=UTF-8")
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c.writeToWriter(callback_content.Bytes())
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}
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func (c *Controller) ServeXml() {
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var content []byte
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var err error
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if RunMode == "prod" {
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content, err = xml.Marshal(c.Data["xml"])
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} else {
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content, err = xml.MarshalIndent(c.Data["xml"], "", " ")
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}
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if err != nil {
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http.Error(c.Ctx.ResponseWriter, err.Error(), http.StatusInternalServerError)
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return
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}
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c.Ctx.ResponseWriter.Header().Set("Content-Type", "application/xml;charset=UTF-8")
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c.writeToWriter(content)
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}
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func (c *Controller) Input() url.Values {
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ct := c.Ctx.Request.Header.Get("Content-Type")
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if strings.Contains(ct, "multipart/form-data") {
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c.Ctx.Request.ParseMultipartForm(MaxMemory) //64MB
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} else {
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c.Ctx.Request.ParseForm()
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}
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return c.Ctx.Request.Form
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}
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func (c *Controller) ParseForm(obj interface{}) error {
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return ParseForm(c.Input(), obj)
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}
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func (c *Controller) GetString(key string) string {
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return c.Input().Get(key)
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}
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func (c *Controller) GetStrings(key string) []string {
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r := c.Ctx.Request
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if r.Form == nil {
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return []string{}
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}
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vs := r.Form[key]
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if len(vs) > 0 {
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return vs
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}
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return []string{}
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}
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func (c *Controller) GetInt(key string) (int64, error) {
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return strconv.ParseInt(c.Input().Get(key), 10, 64)
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}
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func (c *Controller) GetBool(key string) (bool, error) {
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return strconv.ParseBool(c.Input().Get(key))
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}
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func (c *Controller) GetFile(key string) (multipart.File, *multipart.FileHeader, error) {
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return c.Ctx.Request.FormFile(key)
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}
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func (c *Controller) SaveToFile(fromfile, tofile string) error {
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file, _, err := c.Ctx.Request.FormFile(fromfile)
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if err != nil {
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return err
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}
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defer file.Close()
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f, err := os.OpenFile(tofile, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0666)
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if err != nil {
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return err
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}
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defer f.Close()
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io.Copy(f, file)
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return nil
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}
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func (c *Controller) StartSession() session.SessionStore {
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if c.CruSession == nil {
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c.CruSession = GlobalSessions.SessionStart(c.Ctx.ResponseWriter, c.Ctx.Request)
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}
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return c.CruSession
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}
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func (c *Controller) SetSession(name interface{}, value interface{}) {
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if c.CruSession == nil {
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c.StartSession()
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}
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c.CruSession.Set(name, value)
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}
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func (c *Controller) GetSession(name interface{}) interface{} {
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if c.CruSession == nil {
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c.StartSession()
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}
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return c.CruSession.Get(name)
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}
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func (c *Controller) DelSession(name interface{}) {
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if c.CruSession == nil {
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c.StartSession()
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}
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c.CruSession.Delete(name)
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}
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func (c *Controller) DestroySession() {
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GlobalSessions.SessionDestroy(c.Ctx.ResponseWriter, c.Ctx.Request)
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}
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func (c *Controller) IsAjax() bool {
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return (c.Ctx.Request.Header.Get("HTTP_X_REQUESTED_WITH") == "XMLHttpRequest")
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}
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func (c *Controller) XsrfToken() string {
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if c._xsrf_token == "" {
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token := c.Ctx.GetCookie("_xsrf")
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if token == "" {
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h := hmac.New(sha1.New, []byte(XSRFKEY))
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fmt.Fprintf(h, "%s:%d", c.Ctx.Request.RemoteAddr, time.Now().UnixNano())
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tok := fmt.Sprintf("%s:%d", h.Sum(nil), time.Now().UnixNano())
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token = base64.URLEncoding.EncodeToString([]byte(tok))
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expire := 0
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if c.XSRFExpire > 0 {
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expire = c.XSRFExpire
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} else {
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expire = XSRFExpire
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}
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c.Ctx.SetCookie("_xsrf", token, expire)
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}
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c._xsrf_token = token
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}
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return c._xsrf_token
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}
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func (c *Controller) CheckXsrfCookie() bool {
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token := c.GetString("_xsrf")
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if token == "" {
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token = c.Ctx.Request.Header.Get("X-Xsrftoken")
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}
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if token == "" {
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token = c.Ctx.Request.Header.Get("X-Csrftoken")
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}
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if token == "" {
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c.Ctx.Abort(403, "'_xsrf' argument missing from POST")
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}
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if c._xsrf_token != token {
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c.Ctx.Abort(403, "XSRF cookie does not match POST argument")
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}
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return true
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}
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func (c *Controller) XsrfFormHtml() string {
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return "<input type=\"hidden\" name=\"_xsrf\" value=\"" +
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c._xsrf_token + "\"/>"
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}
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func (c *Controller) GoToFunc(funcname string) {
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if funcname[0] < 65 || funcname[0] > 90 {
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panic("GoToFunc should exported function")
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}
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c.gotofunc = funcname
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}
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