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173 lines
5.0 KiB
173 lines
5.0 KiB
package context
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import (
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"gopkg.in/macaron.v1"
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"github.com/go-macaron/csrf"
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"github.com/go-macaron/session"
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"github.com/go-macaron/cache"
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log "gopkg.in/clog.v1"
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"net/http"
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"dev.sigpipe.me/dashie/git.txt/setting"
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"fmt"
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"io"
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"time"
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"strings"
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"github.com/go-macaron/i18n"
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"html/template"
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"dev.sigpipe.me/dashie/git.txt/models"
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"dev.sigpipe.me/dashie/git.txt/stuff/form"
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"dev.sigpipe.me/dashie/git.txt/stuff/auth"
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)
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// Context represents context of a request.
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type Context struct {
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*macaron.Context
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Cache cache.Cache
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csrf csrf.CSRF
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Flash *session.Flash
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Session session.Store
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User *models.User
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IsLogged bool
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IsBasicAuth bool
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}
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// Title sets "Title" field in template data.
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func (c *Context) Title(locale string) {
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c.Data["Title"] = c.Tr(locale) + " - " + setting.AppName
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}
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// HTML responses template with given status.
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func (ctx *Context) HTML(status int, name string) {
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log.Trace("Template: %s", name)
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ctx.Context.HTML(status, name)
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}
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// Success responses template with status http.StatusOK.
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func (c *Context) Success(name string) {
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c.HTML(http.StatusOK, name)
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}
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// JSONSuccess responses JSON with status http.StatusOK.
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func (c *Context) JSONSuccess(data interface{}) {
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c.JSON(http.StatusOK, data)
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}
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// HasError returns true if error occurs in form validation.
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func (ctx *Context) HasError() bool {
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hasErr, ok := ctx.Data["HasError"]
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if !ok {
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return false
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}
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ctx.Flash.ErrorMsg = ctx.Data["ErrorMsg"].(string)
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ctx.Data["Flash"] = ctx.Flash
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return hasErr.(bool)
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}
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// RenderWithErr used for page has form validation but need to prompt error to users.
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func (ctx *Context) RenderWithErr(msg, tpl string, f interface{}) {
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if f != nil {
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form.Assign(f, ctx.Data)
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}
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ctx.Flash.ErrorMsg = msg
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ctx.Data["Flash"] = ctx.Flash
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ctx.HTML(http.StatusOK, tpl)
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}
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// Handle handles and logs error by given status.
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func (ctx *Context) Handle(status int, title string, err error) {
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switch status {
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case http.StatusNotFound:
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ctx.Data["Title"] = "Page Not Found"
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case http.StatusInternalServerError:
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ctx.Data["Title"] = "Internal Server Error"
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log.Error(2, "%s: %v", title, err)
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}
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ctx.HTML(status, fmt.Sprintf("status/%d", status))
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}
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// NotFound renders the 404 page.
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func (ctx *Context) NotFound() {
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ctx.Handle(http.StatusNotFound, "", nil)
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}
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// ServerError renders the 500 page.
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func (c *Context) ServerError(title string, err error) {
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c.Handle(http.StatusInternalServerError, title, err)
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}
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// NotFoundOrServerError use error check function to determine if the error
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// is about not found. It responses with 404 status code for not found error,
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// or error context description for logging purpose of 500 server error.
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func (c *Context) NotFoundOrServerError(title string, errck func(error) bool, err error) {
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if errck(err) {
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c.NotFound()
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return
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}
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c.ServerError(title, err)
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}
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func (ctx *Context) ServeContent(name string, r io.ReadSeeker, params ...interface{}) {
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modtime := time.Now()
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for _, p := range params {
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switch v := p.(type) {
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case time.Time:
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modtime = v
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}
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}
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ctx.Resp.Header().Set("Content-Description", "File Transfer")
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ctx.Resp.Header().Set("Content-Type", "application/octet-stream")
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ctx.Resp.Header().Set("Content-Disposition", "attachment; filename="+name)
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ctx.Resp.Header().Set("Content-Transfer-Encoding", "binary")
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ctx.Resp.Header().Set("Expires", "0")
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ctx.Resp.Header().Set("Cache-Control", "must-revalidate")
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ctx.Resp.Header().Set("Pragma", "public")
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http.ServeContent(ctx.Resp, ctx.Req.Request, name, modtime, r)
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}
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// Contexter initializes a classic context for a request.
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func Contexter() macaron.Handler {
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return func(c *macaron.Context, l i18n.Locale, cache cache.Cache, sess session.Store, f *session.Flash, x csrf.CSRF) {
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ctx := &Context{
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Context: c,
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Cache: cache,
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csrf: x,
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Flash: f,
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Session: sess,
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}
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if len(setting.HTTP.AccessControlAllowOrigin) > 0 {
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ctx.Header().Set("Access-Control-Allow-Origin", setting.HTTP.AccessControlAllowOrigin)
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ctx.Header().Set("'Access-Control-Allow-Credentials' ", "true")
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ctx.Header().Set("Access-Control-Max-Age", "3600")
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ctx.Header().Set("Access-Control-Allow-Headers", "Content-Type, Access-Control-Allow-Headers, Authorization, X-Requested-With")
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}
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// Compute current URL for real-time change language.
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ctx.Data["Link"] = setting.AppSubURL + strings.TrimSuffix(ctx.Req.URL.Path, "/")
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ctx.Data["PageStartTime"] = time.Now()
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// Get user from session if logined.
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ctx.User, ctx.IsBasicAuth = auth.SignedInUser(ctx.Context, ctx.Session)
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if ctx.User != nil {
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ctx.IsLogged = true
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ctx.Data["IsLogged"] = ctx.IsLogged
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ctx.Data["LoggedUser"] = ctx.User
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ctx.Data["LoggedUserID"] = ctx.User.ID
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ctx.Data["LoggedUserName"] = ctx.User.UserName
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} else {
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ctx.Data["LoggedUserID"] = 0
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ctx.Data["LoggedUserName"] = ""
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}
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ctx.Data["CSRFToken"] = x.GetToken()
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ctx.Data["CSRFTokenHTML"] = template.HTML(`<input type="hidden" name="_csrf" value="` + x.GetToken() + `">`)
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log.Trace("Session ID: %s", sess.ID())
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log.Trace("CSRF Token: %v", ctx.Data["CSRFToken"])
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c.Map(ctx)
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}
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}
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