// Copyright 2014 The Gogs Authors. All rights reserved. // Use of this source code is governed by a MIT-style // license that can be found in the LICENSE file. package context import ( "fmt" "html" "html/template" "io" "net/http" "strings" "time" "code.gitea.io/gitea/models" "code.gitea.io/gitea/modules/auth" "code.gitea.io/gitea/modules/base" "code.gitea.io/gitea/modules/log" "code.gitea.io/gitea/modules/setting" "github.com/go-macaron/cache" "github.com/go-macaron/csrf" "github.com/go-macaron/i18n" "github.com/go-macaron/session" macaron "gopkg.in/macaron.v1" ) // Context represents context of a request. type Context struct { *macaron.Context Cache cache.Cache csrf csrf.CSRF Flash *session.Flash Session session.Store User *models.User IsSigned bool IsBasicAuth bool Repo *Repository Org *Organization } // HasAPIError returns true if error occurs in form validation. func (ctx *Context) HasAPIError() bool { hasErr, ok := ctx.Data["HasError"] if !ok { return false } return hasErr.(bool) } // GetErrMsg returns error message func (ctx *Context) GetErrMsg() string { return ctx.Data["ErrorMsg"].(string) } // HasError returns true if error occurs in form validation. func (ctx *Context) HasError() bool { hasErr, ok := ctx.Data["HasError"] if !ok { return false } ctx.Flash.ErrorMsg = ctx.Data["ErrorMsg"].(string) ctx.Data["Flash"] = ctx.Flash return hasErr.(bool) } // HasValue returns true if value of given name exists. func (ctx *Context) HasValue(name string) bool { _, ok := ctx.Data[name] return ok } // HTML calls Context.HTML and converts template name to string. func (ctx *Context) HTML(status int, name base.TplName) { log.Debug("Template: %s", name) ctx.Context.HTML(status, string(name)) } // RenderWithErr used for page has form validation but need to prompt error to users. func (ctx *Context) RenderWithErr(msg string, tpl base.TplName, form interface{}) { if form != nil { auth.AssignForm(form, ctx.Data) } ctx.Flash.ErrorMsg = msg ctx.Data["Flash"] = ctx.Flash ctx.HTML(200, tpl) } // Handle handles and logs error by given status. func (ctx *Context) Handle(status int, title string, err error) { if err != nil { log.Error(4, "%s: %v", title, err) if macaron.Env != macaron.PROD { ctx.Data["ErrorMsg"] = err } } switch status { case 404: ctx.Data["Title"] = "Page Not Found" case 500: ctx.Data["Title"] = "Internal Server Error" } ctx.HTML(status, base.TplName(fmt.Sprintf("status/%d", status))) } // NotFoundOrServerError use error check function to determine if the error // is about not found. It responses with 404 status code for not found error, // or error context description for logging purpose of 500 server error. func (ctx *Context) NotFoundOrServerError(title string, errck func(error) bool, err error) { if errck(err) { ctx.Handle(404, title, err) return } ctx.Handle(500, title, err) } // HandleText handles HTTP status code func (ctx *Context) HandleText(status int, title string) { if (status/100 == 4) || (status/100 == 5) { log.Error(4, "%s", title) } ctx.PlainText(status, []byte(title)) } // ServeContent serves content to http request func (ctx *Context) ServeContent(name string, r io.ReadSeeker, params ...interface{}) { modtime := time.Now() for _, p := range params { switch v := p.(type) { case time.Time: modtime = v } } ctx.Resp.Header().Set("Content-Description", "File Transfer") ctx.Resp.Header().Set("Content-Type", "application/octet-stream") ctx.Resp.Header().Set("Content-Disposition", "attachment; filename="+name) ctx.Resp.Header().Set("Content-Transfer-Encoding", "binary") ctx.Resp.Header().Set("Expires", "0") ctx.Resp.Header().Set("Cache-Control", "must-revalidate") ctx.Resp.Header().Set("Pragma", "public") http.ServeContent(ctx.Resp, ctx.Req.Request, name, modtime, r) } // Contexter initializes a classic context for a request. func Contexter() macaron.Handler { return func(c *macaron.Context, l i18n.Locale, cache cache.Cache, sess session.Store, f *session.Flash, x csrf.CSRF) { ctx := &Context{ Context: c, Cache: cache, csrf: x, Flash: f, Session: sess, Repo: &Repository{ PullRequest: &PullRequest{}, }, Org: &Organization{}, } // Compute current URL for real-time change language. ctx.Data["Link"] = setting.AppSubURL + strings.TrimSuffix(ctx.Req.URL.Path, "/") ctx.Data["PageStartTime"] = time.Now() // Get user from session if logged in. ctx.User, ctx.IsBasicAuth = auth.SignedInUser(ctx.Context, ctx.Session) if ctx.User != nil { ctx.IsSigned = true ctx.Data["IsSigned"] = ctx.IsSigned ctx.Data["SignedUser"] = ctx.User ctx.Data["SignedUserID"] = ctx.User.ID ctx.Data["SignedUserName"] = ctx.User.Name ctx.Data["IsAdmin"] = ctx.User.IsAdmin } else { ctx.Data["SignedUserID"] = 0 ctx.Data["SignedUserName"] = "" } // If request sends files, parse them here otherwise the Query() can't be parsed and the CsrfToken will be invalid. if ctx.Req.Method == "POST" && strings.Contains(ctx.Req.Header.Get("Content-Type"), "multipart/form-data") { if err := ctx.Req.ParseMultipartForm(setting.AttachmentMaxSize << 20); err != nil && !strings.Contains(err.Error(), "EOF") { // 32MB max size ctx.Handle(500, "ParseMultipartForm", err) return } } ctx.Resp.Header().Set(`X-Frame-Options`, `SAMEORIGIN`) ctx.Data["CsrfToken"] = html.EscapeString(x.GetToken()) ctx.Data["CsrfTokenHtml"] = template.HTML(`<input type="hidden" name="_csrf" value="` + ctx.Data["CsrfToken"].(string) + `">`) log.Debug("Session ID: %s", sess.ID()) log.Debug("CSRF Token: %v", ctx.Data["CsrfToken"]) ctx.Data["ShowRegistrationButton"] = setting.Service.ShowRegistrationButton ctx.Data["ShowFooterBranding"] = setting.ShowFooterBranding ctx.Data["ShowFooterVersion"] = setting.ShowFooterVersion ctx.Data["EnableOpenIDSignIn"] = setting.Service.EnableOpenIDSignIn c.Map(ctx) } }