package app import ( "encoding/json" "io/ioutil" "git.zxq.co/ripple/rippleapi/common" "github.com/gin-gonic/gin" ) // Method wraps an API method to a HandlerFunc. func Method(f func(md common.MethodData) common.CodeMessager, privilegesNeeded ...int) gin.HandlerFunc { return func(c *gin.Context) { initialCaretaker(c, f, privilegesNeeded...) } } func initialCaretaker(c *gin.Context, f func(md common.MethodData) common.CodeMessager, privilegesNeeded ...int) { data, err := ioutil.ReadAll(c.Request.Body) if err != nil { c.Error(err) } c.Request.Body.Close() token := "" switch { case c.Request.Header.Get("X-Ripple-Token") != "": token = c.Request.Header.Get("X-Ripple-Token") case c.Query("token") != "": token = c.Query("token") case c.Query("k") != "": token = c.Query("k") default: token, _ = c.Cookie("X-Ripple-Token") } md := common.MethodData{ DB: db, RequestData: data, C: c, } if token != "" { tokenReal, exists := GetTokenFull(token, db) if exists { md.User = tokenReal } } missingPrivileges := 0 for _, privilege := range privilegesNeeded { if int(md.User.Privileges)&privilege == 0 { missingPrivileges |= privilege } } if missingPrivileges != 0 { c.IndentedJSON(401, common.SimpleResponse(401, "You don't have the privilege(s): "+common.Privileges(missingPrivileges).String()+".")) return } resp := f(md) if resp.GetCode() == 0 { // Dirty hack to set the code type setCoder interface { SetCode(int) } if newver, can := resp.(setCoder); can { newver.SetCode(500) } } if _, exists := c.GetQuery("pls200"); exists { c.Writer.WriteHeader(200) } else { c.Writer.WriteHeader(resp.GetCode()) } if _, exists := c.GetQuery("callback"); exists { c.Header("Content-Type", "application/javascript; charset=utf-8") } else { c.Header("Content-Type", "application/json; charset=utf-8") } mkjson(c, resp) } // mkjson auto indents json, and wraps json into a jsonp callback if specified by the request. // then writes to the gin.Context the data. func mkjson(c *gin.Context, data interface{}) { exported, err := json.MarshalIndent(data, "", "\t") if err != nil { c.Error(err) exported = []byte(`{ "code": 500, "message": "something has gone really really really really really really wrong.", "data": null }`) } cb := c.Query("callback") willcb := cb != "" && len(cb) < 100 if willcb { c.Writer.Write([]byte("/**/ typeof " + cb + " === 'function' && " + cb + "(")) } c.Writer.Write(exported) if willcb { c.Writer.Write([]byte(");")) } }