SeanOMik
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roulette
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Simplified handler function structure

This commit is contained in:
Seednode 2023-05-08 13:12:51 -05:00
parent 4be011755b
commit 5f78094498
2 changed files with 105 additions and 119 deletions
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2
cmd/version.go
View File

@ -10,7 +10,7 @@ import (
"github.com/spf13/cobra"
)
var Version = "0.43.2"
var Version = "0.44.0"
func init() {
rootCmd.AddCommand(versionCmd)

222
cmd/web.go
View File

@ -363,7 +363,7 @@ func notFound(w http.ResponseWriter, r *http.Request, filePath string) error {
return nil
}
func refreshInterval(r *http.Request, Regexes *Regexes) (int64, string) {
func RefreshInterval(r *http.Request, Regexes *Regexes) (int64, string) {
refreshInterval := r.URL.Query().Get("refresh")
if !Regexes.units.MatchString(refreshInterval) {
@ -378,7 +378,7 @@ func refreshInterval(r *http.Request, Regexes *Regexes) (int64, string) {
return duration.Milliseconds(), refreshInterval
}
func sortOrder(r *http.Request) string {
func SortOrder(r *http.Request) string {
sortOrder := r.URL.Query().Get("sort")
if sortOrder == "asc" || sortOrder == "desc" {
return sortOrder
@ -508,106 +508,7 @@ func realIP(r *http.Request) string {
}
}
func serveHtml(w http.ResponseWriter, r *http.Request, filePath string, dimensions *Dimensions, filters *Filters, Regexes *Regexes) error {
fileName := filepath.Base(filePath)
w.Header().Add("Content-Type", "text/html")
sortOrder := sortOrder(r)
refreshTimer, refreshInterval := refreshInterval(r, Regexes)
queryParams := generateQueryParams(filters, sortOrder, refreshInterval)
var htmlBody strings.Builder
htmlBody.WriteString(`<!DOCTYPE html><html lang="en"><head>`)
htmlBody.WriteString(`<style>html,body{margin:0;padding:0;height:100%;}`)
htmlBody.WriteString(`a{display:block;height:100%;width:100%;text-decoration:none;}`)
htmlBody.WriteString(`img{margin:auto;display:block;max-width:97%;max-height:97%;object-fit:scale-down;`)
htmlBody.WriteString(`position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);}</style>`)
htmlBody.WriteString(fmt.Sprintf(`<title>%s (%dx%d)</title>`,
fileName,
dimensions.width,
dimensions.height))
htmlBody.WriteString(`</head><body>`)
if refreshInterval != "0ms" {
htmlBody.WriteString(fmt.Sprintf("<script>window.onload = function(){setInterval(function(){window.location.href = '/%s';}, %d);};</script>",
queryParams,
refreshTimer))
}
htmlBody.WriteString(fmt.Sprintf(`<a href="/%s"><img src="%s" width="%d" height="%d" alt="Roulette selected: %s"></a>`,
queryParams,
generateFilePath(filePath),
dimensions.width,
dimensions.height,
fileName))
htmlBody.WriteString(`</body></html>`)
_, err := io.WriteString(w, gohtml.Format(htmlBody.String()))
if err != nil {
return err
}
return nil
}
func serveStaticFile(w http.ResponseWriter, r *http.Request, paths []string, stats *ServeStats) error {
prefixedFilePath, err := stripQueryParams(r.URL.Path)
if err != nil {
return err
}
filePath, err := filepath.EvalSymlinks(strings.TrimPrefix(prefixedFilePath, Prefix))
if err != nil {
return err
}
if !pathIsValid(filePath, paths) {
notFound(w, r, filePath)
return nil
}
exists, err := fileExists(filePath)
if err != nil {
return err
}
if !exists {
notFound(w, r, filePath)
return nil
}
startTime := time.Now()
buf, err := os.ReadFile(filePath)
if err != nil {
return err
}
w.Write(buf)
fileSize := humanReadableSize(len(buf))
if verbose {
fmt.Printf("%s | Served %s (%s) to %s in %s\n",
startTime.Format(LogDate),
filePath,
fileSize,
realIP(r),
time.Since(startTime).Round(time.Microsecond),
)
}
if statistics {
stats.incrementCounter(filePath, startTime, fileSize)
}
return nil
}
func serveCacheClearHandler(args []string, index *Index) http.HandlerFunc {
func serveCacheClear(args []string, index *Index) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
index.generateCache(args)
@ -617,7 +518,7 @@ func serveCacheClearHandler(args []string, index *Index) http.HandlerFunc {
}
}
func serveStatsHandler(args []string, stats *ServeStats) http.HandlerFunc {
func serveStats(args []string, stats *ServeStats) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusOK)
w.Header().Set("Content-Type", "application/json")
@ -647,7 +548,7 @@ func serveStatsHandler(args []string, stats *ServeStats) http.HandlerFunc {
}
}
func serveHtmlDebugHandler(args []string, index *Index) http.HandlerFunc {
func serveDebugHtml(args []string, index *Index) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusOK)
w.Header().Set("Content-Type", "text/html")
@ -686,7 +587,7 @@ func serveHtmlDebugHandler(args []string, index *Index) http.HandlerFunc {
}
}
func serveJsonDebugHandler(args []string, index *Index) http.HandlerFunc {
func serveDebugJson(args []string, index *Index) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusOK)
w.Header().Set("Content-Type", "application/json")
@ -717,16 +618,67 @@ func serveJsonDebugHandler(args []string, index *Index) http.HandlerFunc {
}
}
func serveStaticFileHandler(paths []string, stats *ServeStats) http.HandlerFunc {
func serveStaticFile(paths []string, stats *ServeStats) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
err := serveStaticFile(w, r, paths, stats)
prefixedFilePath, err := stripQueryParams(r.URL.Path)
if err != nil {
fmt.Println(err)
return
}
filePath, err := filepath.EvalSymlinks(strings.TrimPrefix(prefixedFilePath, Prefix))
if err != nil {
fmt.Println(err)
return
}
if !pathIsValid(filePath, paths) {
notFound(w, r, filePath)
return
}
exists, err := fileExists(filePath)
if err != nil {
fmt.Println(err)
return
}
if !exists {
notFound(w, r, filePath)
return
}
startTime := time.Now()
buf, err := os.ReadFile(filePath)
if err != nil {
fmt.Println(err)
return
}
w.Write(buf)
fileSize := humanReadableSize(len(buf))
if verbose {
fmt.Printf("%s | Served %s (%s) to %s in %s\n",
startTime.Format(LogDate),
filePath,
fileSize,
realIP(r),
time.Since(startTime).Round(time.Microsecond),
)
}
if statistics {
stats.incrementCounter(filePath, startTime, fileSize)
}
}
}
func serveHtmlHandler(paths []string, Regexes *Regexes, index *Index) http.HandlerFunc {
func serveImage(paths []string, Regexes *Regexes, index *Index) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
refererUri, err := stripQueryParams(refererToUri(r.Referer()))
if err != nil {
@ -739,9 +691,9 @@ func serveHtmlHandler(paths []string, Regexes *Regexes, index *Index) http.Handl
excludes: splitQueryParams(r.URL.Query().Get("exclude"), Regexes),
}
sortOrder := sortOrder(r)
sortOrder := SortOrder(r)
_, refreshInterval := refreshInterval(r, Regexes)
_, refreshInterval := RefreshInterval(r, Regexes)
if r.URL.Path == "/" {
var filePath string
@ -822,7 +774,41 @@ func serveHtmlHandler(paths []string, Regexes *Regexes, index *Index) http.Handl
return
}
err = serveHtml(w, r, filePath, dimensions, filters, Regexes)
fileName := filepath.Base(filePath)
w.Header().Add("Content-Type", "text/html")
sortOrder := SortOrder(r)
refreshTimer, refreshInterval := RefreshInterval(r, Regexes)
queryParams := generateQueryParams(filters, sortOrder, refreshInterval)
var htmlBody strings.Builder
htmlBody.WriteString(`<!DOCTYPE html><html lang="en"><head>`)
htmlBody.WriteString(`<style>html,body{margin:0;padding:0;height:100%;}`)
htmlBody.WriteString(`a{display:block;height:100%;width:100%;text-decoration:none;}`)
htmlBody.WriteString(`img{margin:auto;display:block;max-width:97%;max-height:97%;object-fit:scale-down;`)
htmlBody.WriteString(`position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);}</style>`)
htmlBody.WriteString(fmt.Sprintf(`<title>%s (%dx%d)</title>`,
fileName,
dimensions.width,
dimensions.height))
htmlBody.WriteString(`</head><body>`)
if refreshInterval != "0ms" {
htmlBody.WriteString(fmt.Sprintf("<script>window.onload = function(){setInterval(function(){window.location.href = '/%s';}, %d);};</script>",
queryParams,
refreshTimer))
}
htmlBody.WriteString(fmt.Sprintf(`<a href="/%s"><img src="%s" width="%d" height="%d" alt="Roulette selected: %s"></a>`,
queryParams,
generateFilePath(filePath),
dimensions.width,
dimensions.height,
fileName))
htmlBody.WriteString(`</body></html>`)
_, err = io.WriteString(w, gohtml.Format(htmlBody.String()))
if err != nil {
fmt.Println(err)
return
@ -843,7 +829,7 @@ func ServePage(args []string) error {
bindAddr := net.ParseIP(bindHost[0])
if bindAddr == nil {
fmt.Println("Invalid bind address provided. Please specify an IPv4 or IPv6 address in dotted decimal or IPv6 format.")
fmt.Println("Invalid bind address provided. Please specify a hostname, or an IPv4 or IPv6 address in dotted decimal or IPv6 format.")
os.Exit(1)
}
@ -884,7 +870,7 @@ func ServePage(args []string) error {
index.generateCache(args)
}
http.Handle("/_/clear_cache", serveCacheClearHandler(args, index))
http.Handle("/_/clear_cache", serveCacheClear(args, index))
}
stats := &ServeStats{
@ -908,17 +894,17 @@ func ServePage(args []string) error {
}()
}
http.Handle("/", serveHtmlHandler(paths, Regexes, index))
http.Handle(Prefix+"/", http.StripPrefix(Prefix, serveStaticFileHandler(paths, stats)))
http.Handle("/", serveImage(paths, Regexes, index))
http.Handle(Prefix+"/", http.StripPrefix(Prefix, serveStaticFile(paths, stats)))
http.HandleFunc("/favicon.ico", doNothing)
if statistics {
http.Handle("/_/stats", serveStatsHandler(args, stats))
http.Handle("/_/stats", serveStats(args, stats))
}
if debug {
http.Handle("/_/html", serveHtmlDebugHandler(args, index))
http.Handle("/_/json", serveJsonDebugHandler(args, index))
http.Handle("/_/html", serveDebugHtml(args, index))
http.Handle("/_/json", serveDebugJson(args, index))
}
err = http.ListenAndServe(net.JoinHostPort(bind, strconv.FormatInt(int64(port), 10)), nil)