gosora/routes/misc.go

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package routes
import (
"bytes"
"io"
"net/http"
"strconv"
"strings"
"time"
"../common"
)
var cacheControlMaxAge = "max-age=" + strconv.Itoa(common.Day) // TODO: Make this a common.Config value
// GET functions
func StaticFile(w http.ResponseWriter, r *http.Request) {
file, ok := common.StaticFiles.Get(r.URL.Path)
if !ok {
common.DebugLogf("Failed to find '%s'", r.URL.Path)
w.WriteHeader(http.StatusNotFound)
return
}
h := w.Header()
// Surely, there's a more efficient way of doing this?
t, err := time.Parse(http.TimeFormat, h.Get("If-Modified-Since"))
if err == nil && file.Info.ModTime().Before(t.Add(1*time.Second)) {
w.WriteHeader(http.StatusNotModified)
return
}
h.Set("Last-Modified", file.FormattedModTime)
h.Set("Content-Type", file.Mimetype)
h.Set("Cache-Control", cacheControlMaxAge) //Cache-Control: max-age=31536000
h.Set("Vary", "Accept-Encoding")
if strings.Contains(h.Get("Accept-Encoding"), "gzip") {
h.Set("Content-Encoding", "gzip")
h.Set("Content-Length", strconv.FormatInt(file.GzipLength, 10))
io.Copy(w, bytes.NewReader(file.GzipData)) // Use w.Write instead?
} else {
h.Set("Content-Length", strconv.FormatInt(file.Length, 10)) // Avoid doing a type conversion every time?
io.Copy(w, bytes.NewReader(file.Data))
}
// Other options instead of io.Copy: io.CopyN(), w.Write(), http.ServeContent()
}
func Overview(w http.ResponseWriter, r *http.Request, user common.User) common.RouteError {
header, ferr := common.UserCheck(w, r, &user)
if ferr != nil {
return ferr
}
header.Zone = "overview"
pi := common.Page{common.GetTitlePhrase("overview"), user, header, tList, nil}
if common.RunPreRenderHook("pre_render_overview", w, r, &user, &pi) {
return nil
}
err := common.Templates.ExecuteTemplate(w, "overview.html", pi)
if err != nil {
return common.InternalError(err, w, r)
}
return nil
}
func CustomPage(w http.ResponseWriter, r *http.Request, user common.User, name string) common.RouteError {
header, ferr := common.UserCheck(w, r, &user)
if ferr != nil {
return ferr
}
header.Zone = "custom_page"
// ! Is this safe?
if common.Templates.Lookup("page_"+name+".html") == nil {
return common.NotFound(w, r, header)
}
pi := common.Page{common.GetTitlePhrase("page"), user, header, tList, nil}
// TODO: Pass the page name to the pre-render hook?
if common.RunPreRenderHook("pre_render_custom_page", w, r, &user, &pi) {
return nil
}
err := common.Templates.ExecuteTemplate(w, "page_"+name+".html", pi)
if err != nil {
return common.InternalError(err, w, r)
}
return nil
}