gosora/routes/misc.go

170 lines
5.3 KiB
Go

package routes
import (
"bytes"
"database/sql"
"io"
"net/http"
"path/filepath"
"strconv"
"strings"
"time"
"github.com/Azareal/Gosora/common"
"github.com/Azareal/Gosora/common/phrases"
"github.com/Azareal/Gosora/query_gen"
)
var cacheControlMaxAge = "max-age=" + strconv.Itoa(int(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, 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)
h.Set("Cache-Control", cacheControlMaxAge) //Cache-Control: max-age=31536000
h.Set("Vary", "Accept-Encoding")
if strings.Contains(r.Header.Get("Accept-Encoding"), "gzip") && file.GzipLength > 0 {
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, header *common.Header) common.RouteError {
header.Title = phrases.GetTitlePhrase("overview")
header.Zone = "overview"
pi := common.Page{header, tList, nil}
return renderTemplate("overview", w, r, header, pi)
}
func CustomPage(w http.ResponseWriter, r *http.Request, user common.User, header *common.Header, name string) common.RouteError {
header.Zone = "custom_page"
name = common.SanitiseSingleLine(name)
page, err := common.Pages.GetByName(name)
if err == nil {
header.Title = page.Title
pi := common.CustomPagePage{header, page}
return renderTemplate("custom_page", w, r, header, pi)
} else if err != sql.ErrNoRows {
return common.InternalError(err, w, r)
}
// ! Is this safe?
if common.Templates.Lookup("page_"+name+".html") == nil {
return common.NotFound(w, r, header)
}
header.Title = phrases.GetTitlePhrase("page")
pi := common.Page{header, tList, nil}
// TODO: Pass the page name to the pre-render hook?
if common.RunPreRenderHook("pre_render_tmpl_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
}
type AttachmentStmts struct {
get *sql.Stmt
}
var attachmentStmts AttachmentStmts
// TODO: Abstract this with an attachment store
func init() {
common.DbInits.Add(func(acc *qgen.Accumulator) error {
attachmentStmts = AttachmentStmts{
get: acc.Select("attachments").Columns("sectionID, sectionTable, originID, originTable, uploadedBy, path").Where("path = ? AND sectionID = ? AND sectionTable = ?").Prepare(),
}
return acc.FirstError()
})
}
func ShowAttachment(w http.ResponseWriter, r *http.Request, user common.User, filename string) common.RouteError {
filename = common.Stripslashes(filename)
var ext = filepath.Ext("./attachs/" + filename)
if !common.AllowedFileExts.Contains(strings.TrimPrefix(ext, ".")) {
return common.LocalError("Bad extension", w, r, user)
}
sectionID, err := strconv.Atoi(r.FormValue("sectionID"))
if err != nil {
return common.LocalError("The sectionID is not an integer", w, r, user)
}
var sectionTable = r.FormValue("sectionType")
var originTable string
var originID, uploadedBy int
err = attachmentStmts.get.QueryRow(filename, sectionID, sectionTable).Scan(&sectionID, &sectionTable, &originID, &originTable, &uploadedBy, &filename)
if err == sql.ErrNoRows {
return common.NotFound(w, r, nil)
} else if err != nil {
return common.InternalError(err, w, r)
}
if sectionTable == "forums" {
_, ferr := common.SimpleForumUserCheck(w, r, &user, sectionID)
if ferr != nil {
return ferr
}
if !user.Perms.ViewTopic {
return common.NoPermissions(w, r, user)
}
} else {
return common.LocalError("Unknown section", w, r, user)
}
if originTable != "topics" && originTable != "replies" {
return common.LocalError("Unknown origin", w, r, user)
}
// TODO: Fix the problem where non-existent files aren't greeted with custom 404s on ServeFile()'s side
http.ServeFile(w, r, "./attachs/"+filename)
return nil
}
// TODO: Set the cookie domain
func ChangeTheme(w http.ResponseWriter, r *http.Request, user common.User) common.RouteError {
//headerLite, _ := SimpleUserCheck(w, r, &user)
// TODO: Rename isJs to something else, just in case we rewrite the JS side in WebAssembly?
isJs := (r.PostFormValue("isJs") == "1")
newTheme := common.SanitiseSingleLine(r.PostFormValue("newTheme"))
theme, ok := common.Themes[newTheme]
if !ok || theme.HideFromThemes {
return common.LocalErrorJSQ("That theme doesn't exist", w, r, user, isJs)
}
cookie := http.Cookie{Name: "current_theme", Value: newTheme, Path: "/", MaxAge: int(common.Year)}
http.SetCookie(w, &cookie)
if !isJs {
http.Redirect(w, r, "/", http.StatusSeeOther)
} else {
_, _ = w.Write(successJSONBytes)
}
return nil
}