gosora/routes/misc.go

142 lines
4.5 KiB
Go

package routes
import (
"bytes"
"database/sql"
"io"
"net/http"
"strconv"
"strings"
"time"
//"fmt"
c "github.com/Azareal/Gosora/common"
"github.com/Azareal/Gosora/common/phrases"
)
var cacheControlMaxAge = "max-age=" + strconv.Itoa(int(c.Day)) // TODO: Make this a c.Config value
var cacheControlMaxAgeWeek = "max-age=" + strconv.Itoa(int(c.Week)) // TODO: Make this a c.Config value
// GET functions
func StaticFile(w http.ResponseWriter, r *http.Request) {
file, ok := c.StaticFiles.Get(r.URL.Path)
if !ok {
//c.DebugLogf("Failed to find '%s'", r.URL.Path) // TODO: Use MicroNotFound? Might be better than the unneccessary overhead of sprintf
w.WriteHeader(http.StatusNotFound)
return
}
h := w.Header()
if file.Length > 300 {
if h.Get("Range") != "" {
h.Set("Vary", "Accept-Encoding")
if len(file.Sha256) != 0 {
h.Set("Cache-Control", cacheControlMaxAgeWeek)
} else {
h.Set("Cache-Control", cacheControlMaxAge) //Cache-Control: max-age=31536000
}
ae := r.Header.Get("Accept-Encoding")
if file.BrLength > 300 && strings.Contains(ae, "br") {
h.Set("Content-Encoding", "br")
h.Set("Content-Length", file.StrBrLength)
http.ServeContent(w, r, r.URL.Path, file.Info.ModTime(), bytes.NewReader(file.BrData))
return
}
if file.GzipLength > 300 && strings.Contains(ae, "gzip") {
h.Set("Content-Encoding", "gzip")
h.Set("Content-Length", file.StrGzipLength)
http.ServeContent(w, r, r.URL.Path, file.Info.ModTime(), bytes.NewReader(file.GzipData))
return
}
h.Set("Content-Length", file.StrLength)
http.ServeContent(w, r, r.URL.Path, file.Info.ModTime(), bytes.NewReader(file.Data))
return
}
}
// Surely, there's a more efficient way of doing this?
t, err := time.Parse(http.TimeFormat, r.Header.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)
if len(file.Sha256) != 0 {
h.Set("Cache-Control", cacheControlMaxAgeWeek)
} else {
h.Set("Cache-Control", cacheControlMaxAge) //Cache-Control: max-age=31536000
}
h.Set("Vary", "Accept-Encoding")
if file.BrLength > 0 && strings.Contains(r.Header.Get("Accept-Encoding"), "br") {
h.Set("Content-Encoding", "br")
h.Set("Content-Length", file.StrBrLength)
io.Copy(w, bytes.NewReader(file.BrData)) // Use w.Write instead?
} else if file.GzipLength > 0 && strings.Contains(r.Header.Get("Accept-Encoding"), "gzip") {
h.Set("Content-Encoding", "gzip")
h.Set("Content-Length", file.StrGzipLength)
io.Copy(w, bytes.NewReader(file.GzipData)) // Use w.Write instead?
} else {
h.Set("Content-Length", file.StrLength)
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, u *c.User, h *c.Header) c.RouteError {
h.Title = phrases.GetTitlePhrase("overview")
h.Zone = "overview"
return renderTemplate("overview", w, r, h, c.Page{h, tList, nil})
}
func CustomPage(w http.ResponseWriter, r *http.Request, u *c.User, h *c.Header, name string) c.RouteError {
h.Zone = "custom_page"
name = c.SanitiseSingleLine(name)
page, err := c.Pages.GetByName(name)
if err == nil {
h.Title = page.Title
return renderTemplate("custom_page", w, r, h, c.CustomPagePage{h, page})
} else if err != sql.ErrNoRows {
return c.InternalError(err, w, r)
}
h.Title = phrases.GetTitlePhrase("page")
// TODO: Pass the page name to the pre-render hook?
err = renderTemplate3("page_"+name, "tmpl_page", w, r, h, c.Page{h, tList, nil})
if err == c.ErrBadDefaultTemplate {
return c.NotFound(w, r, h)
} else if err != nil {
return c.InternalError(err, w, r)
}
return nil
}
// TODO: Set the cookie domain
func ChangeTheme(w http.ResponseWriter, r *http.Request, u *c.User) c.RouteError {
//headerLite, _ := SimpleUserCheck(w, r, u)
// TODO: Rename js to something else, just in case we rewrite the JS side in WebAssembly?
js := r.PostFormValue("js") == "1"
newTheme := c.SanitiseSingleLine(r.PostFormValue("theme"))
//fmt.Printf("newTheme: %+v\n", newTheme)
theme, ok := c.Themes[newTheme]
if !ok || theme.HideFromThemes {
return c.LocalErrorJSQ("That theme doesn't exist", w, r, u, js)
}
cookie := http.Cookie{Name: "current_theme", Value: newTheme, Path: "/", MaxAge: int(c.Year)}
http.SetCookie(w, &cookie)
if !js {
http.Redirect(w, r, "/", http.StatusSeeOther)
} else {
_, _ = w.Write(successJSONBytes)
}
return nil
}