488 lines
14 KiB
Go
488 lines
14 KiB
Go
/* WIP Under Construction */
|
|
package main
|
|
|
|
import (
|
|
"bytes"
|
|
"log"
|
|
"os"
|
|
"strconv"
|
|
"text/template"
|
|
)
|
|
|
|
var routeList []*RouteImpl
|
|
var routeGroups []*RouteGroup
|
|
|
|
type TmplVars struct {
|
|
RouteList []*RouteImpl
|
|
RouteGroups []*RouteGroup
|
|
AllRouteNames []string
|
|
AllRouteMap map[string]int
|
|
AllAgentNames []string
|
|
AllAgentMap map[string]int
|
|
}
|
|
|
|
func main() {
|
|
log.Println("Generating the router...")
|
|
|
|
// Load all the routes...
|
|
routes()
|
|
|
|
var tmplVars = TmplVars{
|
|
RouteList: routeList,
|
|
RouteGroups: routeGroups,
|
|
}
|
|
var allRouteNames []string
|
|
var allRouteMap = make(map[string]int)
|
|
|
|
var out string
|
|
var mapIt = func(name string) {
|
|
allRouteNames = append(allRouteNames, name)
|
|
allRouteMap[name] = len(allRouteNames) - 1
|
|
}
|
|
var countToIndents = func(indent int) (indentor string) {
|
|
for i := 0; i < indent; i++ {
|
|
indentor += "\t"
|
|
}
|
|
return indentor
|
|
}
|
|
var runBefore = func(runnables []Runnable, indent int) (out string) {
|
|
var indentor = countToIndents(indent)
|
|
if len(runnables) > 0 {
|
|
for _, runnable := range runnables {
|
|
if runnable.Literal {
|
|
out += "\n\t" + indentor + runnable.Contents
|
|
} else {
|
|
out += "\n" + indentor + "err = common." + runnable.Contents + "(w,req,user)\n" +
|
|
indentor + "if err != nil {\n" +
|
|
indentor + "\trouter.handleError(err,w,req,user)\n" +
|
|
indentor + "\treturn\n" +
|
|
indentor + "}\n" + indentor
|
|
}
|
|
}
|
|
}
|
|
return out
|
|
}
|
|
|
|
for _, route := range routeList {
|
|
mapIt(route.Name)
|
|
var end = len(route.Path) - 1
|
|
out += "\n\t\tcase \"" + route.Path[0:end] + "\":"
|
|
out += runBefore(route.RunBefore, 4)
|
|
out += "\n\t\t\tcommon.RouteViewCounter.Bump(" + strconv.Itoa(allRouteMap[route.Name]) + ")"
|
|
out += "\n\t\t\terr = " + route.Name + "(w,req,user"
|
|
for _, item := range route.Vars {
|
|
out += "," + item
|
|
}
|
|
out += `)
|
|
if err != nil {
|
|
router.handleError(err,w,req,user)
|
|
}`
|
|
}
|
|
|
|
for _, group := range routeGroups {
|
|
var end = len(group.Path) - 1
|
|
out += "\n\t\tcase \"" + group.Path[0:end] + "\":"
|
|
out += runBefore(group.RunBefore, 3)
|
|
out += "\n\t\t\tswitch(req.URL.Path) {"
|
|
|
|
var defaultRoute = blankRoute()
|
|
for _, route := range group.RouteList {
|
|
if group.Path == route.Path {
|
|
defaultRoute = route
|
|
continue
|
|
}
|
|
mapIt(route.Name)
|
|
|
|
out += "\n\t\t\t\tcase \"" + route.Path + "\":"
|
|
if len(route.RunBefore) > 0 {
|
|
skipRunnable:
|
|
for _, runnable := range route.RunBefore {
|
|
for _, gRunnable := range group.RunBefore {
|
|
if gRunnable.Contents == runnable.Contents {
|
|
continue
|
|
}
|
|
// TODO: Stop hard-coding these
|
|
if gRunnable.Contents == "AdminOnly" && runnable.Contents == "MemberOnly" {
|
|
continue skipRunnable
|
|
}
|
|
if gRunnable.Contents == "AdminOnly" && runnable.Contents == "SuperModOnly" {
|
|
continue skipRunnable
|
|
}
|
|
if gRunnable.Contents == "SuperModOnly" && runnable.Contents == "MemberOnly" {
|
|
continue skipRunnable
|
|
}
|
|
}
|
|
|
|
if runnable.Literal {
|
|
out += "\n\t\t\t\t\t" + runnable.Contents
|
|
} else {
|
|
out += `
|
|
err = common.` + runnable.Contents + `(w,req,user)
|
|
if err != nil {
|
|
router.handleError(err,w,req,user)
|
|
return
|
|
}
|
|
`
|
|
}
|
|
}
|
|
}
|
|
out += "\n\t\t\t\t\tcommon.RouteViewCounter.Bump(" + strconv.Itoa(allRouteMap[route.Name]) + ")"
|
|
out += "\n\t\t\t\t\terr = " + route.Name + "(w,req,user"
|
|
for _, item := range route.Vars {
|
|
out += "," + item
|
|
}
|
|
out += ")"
|
|
}
|
|
|
|
if defaultRoute.Name != "" {
|
|
mapIt(defaultRoute.Name)
|
|
out += "\n\t\t\t\tdefault:"
|
|
out += runBefore(defaultRoute.RunBefore, 4)
|
|
out += "\n\t\t\t\t\tcommon.RouteViewCounter.Bump(" + strconv.Itoa(allRouteMap[defaultRoute.Name]) + ")"
|
|
out += "\n\t\t\t\t\terr = " + defaultRoute.Name + "(w,req,user"
|
|
for _, item := range defaultRoute.Vars {
|
|
out += ", " + item
|
|
}
|
|
out += ")"
|
|
}
|
|
out += `
|
|
}
|
|
if err != nil {
|
|
router.handleError(err,w,req,user)
|
|
}`
|
|
}
|
|
|
|
// Stubs for us to refer to these routes through
|
|
mapIt("routeDynamic")
|
|
mapIt("routeUploads")
|
|
tmplVars.AllRouteNames = allRouteNames
|
|
tmplVars.AllRouteMap = allRouteMap
|
|
tmplVars.AllAgentNames = []string{
|
|
"unknown",
|
|
"firefox",
|
|
"chrome",
|
|
"opera",
|
|
"safari",
|
|
"edge",
|
|
"internetexplorer",
|
|
|
|
"googlebot",
|
|
"yandex",
|
|
"bing",
|
|
"baidu",
|
|
"duckduckgo",
|
|
"discord",
|
|
"cloudflarealwayson",
|
|
"lynx",
|
|
"blank",
|
|
}
|
|
|
|
tmplVars.AllAgentMap = make(map[string]int)
|
|
for id, agent := range tmplVars.AllAgentNames {
|
|
tmplVars.AllAgentMap[agent] = id
|
|
}
|
|
|
|
var fileData = `// Code generated by. DO NOT EDIT.
|
|
/* This file was automatically generated by the software. Please don't edit it as your changes may be overwritten at any moment. */
|
|
package main
|
|
|
|
import (
|
|
"log"
|
|
"strings"
|
|
"sync"
|
|
"errors"
|
|
"net/http"
|
|
|
|
"./common"
|
|
)
|
|
|
|
var ErrNoRoute = errors.New("That route doesn't exist.")
|
|
// TODO: What about the /uploads/ route? x.x
|
|
var RouteMap = map[string]interface{}{ {{range .AllRouteNames}}
|
|
"{{.}}": {{.}},{{end}}
|
|
}
|
|
|
|
// ! NEVER RELY ON THESE REMAINING THE SAME BETWEEN COMMITS
|
|
var routeMapEnum = map[string]int{ {{range $index, $element := .AllRouteNames}}
|
|
"{{$element}}": {{$index}},{{end}}
|
|
}
|
|
var reverseRouteMapEnum = map[int]string{ {{range $index, $element := .AllRouteNames}}
|
|
{{$index}}: "{{$element}}",{{end}}
|
|
}
|
|
var agentMapEnum = map[string]int{ {{range $index, $element := .AllAgentNames}}
|
|
"{{$element}}": {{$index}},{{end}}
|
|
}
|
|
var reverseAgentMapEnum = map[int]string{ {{range $index, $element := .AllAgentNames}}
|
|
{{$index}}: "{{$element}}",{{end}}
|
|
}
|
|
|
|
// TODO: Stop spilling these into the package scope?
|
|
func init() {
|
|
common.SetRouteMapEnum(routeMapEnum)
|
|
common.SetReverseRouteMapEnum(reverseRouteMapEnum)
|
|
common.SetAgentMapEnum(agentMapEnum)
|
|
common.SetReverseAgentMapEnum(reverseAgentMapEnum)
|
|
}
|
|
|
|
type GenRouter struct {
|
|
UploadHandler func(http.ResponseWriter, *http.Request)
|
|
extraRoutes map[string]func(http.ResponseWriter, *http.Request, common.User) common.RouteError
|
|
|
|
sync.RWMutex
|
|
}
|
|
|
|
func NewGenRouter(uploads http.Handler) *GenRouter {
|
|
return &GenRouter{
|
|
UploadHandler: http.StripPrefix("/uploads/",uploads).ServeHTTP,
|
|
extraRoutes: make(map[string]func(http.ResponseWriter, *http.Request, common.User) common.RouteError),
|
|
}
|
|
}
|
|
|
|
func (router *GenRouter) handleError(err common.RouteError, w http.ResponseWriter, r *http.Request, user common.User) {
|
|
if err.Handled() {
|
|
return
|
|
}
|
|
|
|
if err.Type() == "system" {
|
|
common.InternalErrorJSQ(err, w, r, err.JSON())
|
|
return
|
|
}
|
|
common.LocalErrorJSQ(err.Error(), w, r, user,err.JSON())
|
|
}
|
|
|
|
func (router *GenRouter) Handle(_ string, _ http.Handler) {
|
|
}
|
|
|
|
func (router *GenRouter) HandleFunc(pattern string, handle func(http.ResponseWriter, *http.Request, common.User) common.RouteError) {
|
|
router.Lock()
|
|
defer router.Unlock()
|
|
router.extraRoutes[pattern] = handle
|
|
}
|
|
|
|
func (router *GenRouter) RemoveFunc(pattern string) error {
|
|
router.Lock()
|
|
defer router.Unlock()
|
|
_, ok := router.extraRoutes[pattern]
|
|
if !ok {
|
|
return ErrNoRoute
|
|
}
|
|
delete(router.extraRoutes, pattern)
|
|
return nil
|
|
}
|
|
|
|
// TODO: Pass the default route or config struct to the router rather than accessing it via a package global
|
|
// TODO: SetDefaultRoute
|
|
// TODO: GetDefaultRoute
|
|
|
|
func (router *GenRouter) ServeHTTP(w http.ResponseWriter, req *http.Request) {
|
|
if len(req.URL.Path) == 0 || req.URL.Path[0] != '/' {
|
|
w.WriteHeader(405)
|
|
w.Write([]byte(""))
|
|
return
|
|
}
|
|
|
|
var prefix, extraData string
|
|
prefix = req.URL.Path[0:strings.IndexByte(req.URL.Path[1:],'/') + 1]
|
|
if req.URL.Path[len(req.URL.Path) - 1] != '/' {
|
|
extraData = req.URL.Path[strings.LastIndexByte(req.URL.Path,'/') + 1:]
|
|
req.URL.Path = req.URL.Path[:strings.LastIndexByte(req.URL.Path,'/') + 1]
|
|
}
|
|
|
|
if common.Dev.SuperDebug {
|
|
log.Print("before routeStatic")
|
|
log.Print("Method: ", req.Method)
|
|
for key, value := range req.Header {
|
|
for _, vvalue := range value {
|
|
log.Print("Header '" + key + "': " + vvalue + "!!")
|
|
}
|
|
}
|
|
log.Print("prefix: ", prefix)
|
|
log.Print("req.URL.Path: ", req.URL.Path)
|
|
log.Print("extraData: ", extraData)
|
|
log.Print("req.Referer(): ", req.Referer())
|
|
log.Print("req.RemoteAddr: ", req.RemoteAddr)
|
|
}
|
|
|
|
if prefix == "/static" {
|
|
req.URL.Path += extraData
|
|
routeStatic(w, req)
|
|
return
|
|
}
|
|
if common.Dev.SuperDebug {
|
|
log.Print("before PreRoute")
|
|
}
|
|
|
|
// Increment the global view counter
|
|
common.GlobalViewCounter.Bump()
|
|
|
|
// Track the user agents. Unfortunately, everyone pretends to be Mozilla, so this'll be a little less efficient than I would like.
|
|
// TODO: Add a setting to disable this?
|
|
// TODO: Use a more efficient detector instead of smashing every possible combination in
|
|
ua := strings.TrimSpace(strings.TrimSuffix(strings.TrimPrefix(req.UserAgent(),"Mozilla/5.0 ")," Safari/537.36")) // Noise, no one's going to be running this and it complicates implementing an efficient UA parser, particularly the more efficient right-to-left one I have in mind
|
|
switch {
|
|
case strings.Contains(ua,"Google"):
|
|
common.AgentViewCounter.Bump({{.AllAgentMap.googlebot}})
|
|
case strings.Contains(ua,"Yandex"):
|
|
common.AgentViewCounter.Bump({{.AllAgentMap.yandex}})
|
|
case strings.Contains(ua,"bingbot"), strings.Contains(ua,"BingPreview"):
|
|
common.AgentViewCounter.Bump({{.AllAgentMap.bing}})
|
|
case strings.Contains(ua,"OPR"): // Pretends to be Chrome, needs to run before that
|
|
common.AgentViewCounter.Bump({{.AllAgentMap.opera}})
|
|
case strings.Contains(ua,"Edge"):
|
|
common.AgentViewCounter.Bump({{.AllAgentMap.edge}})
|
|
case strings.Contains(ua,"Chrome"):
|
|
common.AgentViewCounter.Bump({{.AllAgentMap.chrome}})
|
|
case strings.Contains(ua,"Firefox"):
|
|
common.AgentViewCounter.Bump({{.AllAgentMap.firefox}})
|
|
case strings.Contains(ua,"Safari"):
|
|
common.AgentViewCounter.Bump({{.AllAgentMap.safari}})
|
|
case strings.Contains(ua,"MSIE"):
|
|
common.AgentViewCounter.Bump({{.AllAgentMap.internetexplorer}})
|
|
case strings.Contains(ua,"Baiduspider"):
|
|
common.AgentViewCounter.Bump({{.AllAgentMap.baidu}})
|
|
case strings.Contains(ua,"DuckDuckBot"):
|
|
common.AgentViewCounter.Bump({{.AllAgentMap.duckduckgo}})
|
|
case strings.Contains(ua,"Discordbot"):
|
|
common.AgentViewCounter.Bump({{.AllAgentMap.discord}})
|
|
case strings.Contains(ua,"Lynx"):
|
|
common.AgentViewCounter.Bump({{.AllAgentMap.lynx}})
|
|
case strings.Contains(ua,"CloudFlare-AlwaysOnline"):
|
|
common.AgentViewCounter.Bump({{.AllAgentMap.cloudflarealwayson}})
|
|
case ua == "":
|
|
common.AgentViewCounter.Bump({{.AllAgentMap.blank}})
|
|
if common.Dev.DebugMode {
|
|
log.Print("Blank UA: ", req.UserAgent())
|
|
log.Print("Method: ", req.Method)
|
|
|
|
for key, value := range req.Header {
|
|
for _, vvalue := range value {
|
|
log.Print("Header '" + key + "': " + vvalue + "!!")
|
|
}
|
|
}
|
|
log.Print("prefix: ", prefix)
|
|
log.Print("req.URL.Path: ", req.URL.Path)
|
|
log.Print("extraData: ", extraData)
|
|
log.Print("req.Referer(): ", req.Referer())
|
|
log.Print("req.RemoteAddr: ", req.RemoteAddr)
|
|
}
|
|
default:
|
|
common.AgentViewCounter.Bump({{.AllAgentMap.unknown}})
|
|
if common.Dev.DebugMode {
|
|
log.Print("Unknown UA: ", req.UserAgent())
|
|
log.Print("Method: ", req.Method)
|
|
for key, value := range req.Header {
|
|
for _, vvalue := range value {
|
|
log.Print("Header '" + key + "': " + vvalue + "!!")
|
|
}
|
|
}
|
|
log.Print("prefix: ", prefix)
|
|
log.Print("req.URL.Path: ", req.URL.Path)
|
|
log.Print("extraData: ", extraData)
|
|
log.Print("req.Referer(): ", req.Referer())
|
|
log.Print("req.RemoteAddr: ", req.RemoteAddr)
|
|
}
|
|
}
|
|
|
|
// Deal with the session stuff, etc.
|
|
user, ok := common.PreRoute(w, req)
|
|
if !ok {
|
|
return
|
|
}
|
|
if common.Dev.SuperDebug {
|
|
log.Print("after PreRoute")
|
|
log.Print("routeMapEnum: ", routeMapEnum)
|
|
}
|
|
|
|
var err common.RouteError
|
|
switch(prefix) {` + out + `
|
|
/*case "/sitemaps": // TODO: Count these views
|
|
req.URL.Path += extraData
|
|
err = sitemapSwitch(w,req)
|
|
if err != nil {
|
|
router.handleError(err,w,req,user)
|
|
}*/
|
|
case "/uploads":
|
|
if extraData == "" {
|
|
common.NotFound(w,req)
|
|
return
|
|
}
|
|
common.RouteViewCounter.Bump({{.AllRouteMap.routeUploads}})
|
|
req.URL.Path += extraData
|
|
// TODO: Find a way to propagate errors up from this?
|
|
router.UploadHandler(w,req) // TODO: Count these views
|
|
case "":
|
|
// Stop the favicons, robots.txt file, etc. resolving to the topics list
|
|
// TODO: Add support for favicons and robots.txt files
|
|
switch(extraData) {
|
|
case "robots.txt":
|
|
err = routeRobotsTxt(w,req) // TODO: Count these views
|
|
if err != nil {
|
|
router.handleError(err,w,req,user)
|
|
}
|
|
return
|
|
/*case "sitemap.xml":
|
|
err = routeSitemapXml(w,req) // TODO: Count these views
|
|
if err != nil {
|
|
router.handleError(err,w,req,user)
|
|
}
|
|
return*/
|
|
}
|
|
|
|
if extraData != "" {
|
|
common.NotFound(w,req)
|
|
return
|
|
}
|
|
|
|
handle, ok := RouteMap[common.Config.DefaultRoute]
|
|
if !ok {
|
|
// TODO: Make this a startup error not a runtime one
|
|
log.Print("Unable to find the default route")
|
|
common.NotFound(w,req)
|
|
return
|
|
}
|
|
common.RouteViewCounter.Bump(routeMapEnum[common.Config.DefaultRoute])
|
|
|
|
handle.(func(http.ResponseWriter, *http.Request, common.User) common.RouteError)(w,req,user)
|
|
default:
|
|
// A fallback for the routes which haven't been converted to the new router yet or plugins
|
|
router.RLock()
|
|
handle, ok := router.extraRoutes[req.URL.Path]
|
|
router.RUnlock()
|
|
|
|
if ok {
|
|
common.RouteViewCounter.Bump({{.AllRouteMap.routeDynamic}}) // TODO: Be more specific about *which* dynamic route it is
|
|
req.URL.Path += extraData
|
|
err = handle(w,req,user)
|
|
if err != nil {
|
|
router.handleError(err,w,req,user)
|
|
}
|
|
return
|
|
}
|
|
common.NotFound(w,req) // TODO: Collect all the error view counts so we can add a replacement for GlobalViewCounter by adding up the view counts of every route? Complex and may be inaccurate, collecting it globally and locally would at-least help find places we aren't capturing views
|
|
}
|
|
}
|
|
`
|
|
var tmpl = template.Must(template.New("router").Parse(fileData))
|
|
var b bytes.Buffer
|
|
err := tmpl.Execute(&b, tmplVars)
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
writeFile("./gen_router.go", string(b.Bytes()))
|
|
log.Println("Successfully generated the router")
|
|
}
|
|
|
|
func writeFile(name string, content string) {
|
|
f, err := os.Create(name)
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
_, err = f.WriteString(content)
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
f.Sync()
|
|
f.Close()
|
|
}
|