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// Copyright 2021 syzkaller project authors. All rights reserved.
// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
package main
import (
"bytes"
"fmt"
"html/template"
"io/ioutil"
"log"
"net"
"net/http"
"os"
"sort"
"time"
"github.com/google/syzkaller/pkg/html"
"github.com/google/syzkaller/pkg/osutil"
"github.com/gorilla/handlers"
)
func (ctx *TestbedContext) setupHTTPServer() {
mux := http.NewServeMux()
mux.HandleFunc("/", ctx.httpMain)
mux.HandleFunc("/graph", ctx.httpGraph)
listener, err := net.Listen("tcp", ctx.Config.HTTP)
if err != nil {
log.Fatalf("failed to listen on %s", ctx.Config.HTTP)
}
log.Printf("handling HTTP on %s", listener.Addr())
go func() {
err := http.Serve(listener, handlers.CompressHandler(mux))
if err != nil {
log.Fatalf("failed to listen on %v: %v", ctx.Config.HTTP, err)
}
}()
}
func (ctx *TestbedContext) httpGraph(w http.ResponseWriter, r *http.Request) {
viewName := r.FormValue("view")
over := r.FormValue("over")
if ctx.Config.BenchCmp == "" {
http.Error(w, "the path to the benchcmp tool is not specified", http.StatusInternalServerError)
return
}
views, err := ctx.GetStatViews()
if err != nil {
http.Error(w, "failed to retrieve stat views", http.StatusInternalServerError)
return
}
var targetView *StatView
for _, view := range views {
if view.Name == viewName {
targetView = &view
break
}
}
if targetView == nil {
http.Error(w, "the requested view was not found", http.StatusInternalServerError)
return
}
// TODO: move syz-benchcmp functionality to pkg/ and just import it?
dir, err := ioutil.TempDir("", "")
if err != nil {
http.Error(w, "failed to create temp folder", http.StatusInternalServerError)
return
}
defer os.RemoveAll(dir)
file, err := osutil.TempFile("")
if err != nil {
http.Error(w, "failed to create temp file", http.StatusInternalServerError)
return
}
defer os.Remove(file)
benches, err := targetView.SaveAvgBenches(dir)
if err != nil {
http.Error(w, "failed to save avg benches", http.StatusInternalServerError)
return
}
args := append([]string{"-all", "-over", over, "-out", file}, benches...)
if out, err := osutil.RunCmd(time.Hour, "", ctx.Config.BenchCmp, args...); err != nil {
http.Error(w, "syz-benchcmp failed\n"+string(out), http.StatusInternalServerError)
return
}
data, err := ioutil.ReadFile(file)
if err != nil {
http.Error(w, "failed to read the temporary file", http.StatusInternalServerError)
return
}
w.Write(data)
}
type uiStatView struct {
Name string
Table [][]string
}
type uiMainPage struct {
Name string
Summary [][]string
Views []uiStatView
}
func (ctx *TestbedContext) httpMain(w http.ResponseWriter, r *http.Request) {
uiViews := []uiStatView{}
views, err := ctx.GetStatViews()
if err != nil {
log.Printf("%s", err)
views = nil
}
for _, view := range views {
table, err := view.StatsTable()
if err != nil {
log.Printf("stat table generation failed: %s", err)
continue
}
sort.SliceStable(table, func(i, j int) bool {
if len(table[i]) == 0 || len(table[j]) == 0 {
return i < j
}
return table[i][0] < table[j][0]
})
uiViews = append(uiViews, uiStatView{
Name: view.Name,
Table: table,
})
}
data := &uiMainPage{
Name: ctx.Config.Name,
Summary: ctx.TestbedStatsTable(),
Views: uiViews,
}
executeTemplate(w, mainTemplate, data)
}
func executeTemplate(w http.ResponseWriter, templ *template.Template, data interface{}) {
buf := new(bytes.Buffer)
if err := templ.Execute(buf, data); err != nil {
log.Printf("failed to execute template: %v", err)
http.Error(w, fmt.Sprintf("failed to execute template: %v", err), http.StatusInternalServerError)
return
}
w.Write(buf.Bytes())
}
var mainTemplate = html.CreatePage(`
<!doctype html>
<html>
<head>
<title>{{.Name }} syzkaller</title>
{{HEAD}}
</head>
<body>
{{define "Table"}}
{{if .}}
<table class="list_table">
{{range $c := .}}
<tr>
{{range $v := $c}}
<td>{{$v}}</td>
{{end}}
</tr>
{{end}}
</table>
{{end}}
{{end}}
<b>{{.Name }} syz-testbed</b>
{{template "Table" .Summary}}
{{range $view := .Views}}
<b>Stat view "{{$view.Name}}"</b><br />
<a href="/graph?view={{$view.Name}}&over=fuzzing">Graph over time</a> /
<a href="/graph?view={{$view.Name}}&over=exec+total">Graph over executions</a> <br />
{{template "Table" .Table}}
{{end}}
</body>
</html>
`)
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