mirror of
https://gitee.com/gitea/gitea
synced 2025-11-04 00:20:25 +08:00
164 lines
4.3 KiB
Go
164 lines
4.3 KiB
Go
// Copyright 2013 Martini Authors
|
|
// Copyright 2014 The Macaron Authors
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License"): you may
|
|
// not use this file except in compliance with the License. You may obtain
|
|
// a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
// License for the specific language governing permissions and limitations
|
|
// under the License.
|
|
|
|
package macaron
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
"io/ioutil"
|
|
"log"
|
|
"net/http"
|
|
"runtime"
|
|
|
|
"github.com/go-macaron/inject"
|
|
)
|
|
|
|
const (
|
|
panicHtml = `<html>
|
|
<head><title>PANIC: %s</title>
|
|
<meta charset="utf-8" />
|
|
<style type="text/css">
|
|
html, body {
|
|
font-family: "Roboto", sans-serif;
|
|
color: #333333;
|
|
background-color: #ea5343;
|
|
margin: 0px;
|
|
}
|
|
h1 {
|
|
color: #d04526;
|
|
background-color: #ffffff;
|
|
padding: 20px;
|
|
border-bottom: 1px dashed #2b3848;
|
|
}
|
|
pre {
|
|
margin: 20px;
|
|
padding: 20px;
|
|
border: 2px solid #2b3848;
|
|
background-color: #ffffff;
|
|
white-space: pre-wrap; /* css-3 */
|
|
white-space: -moz-pre-wrap; /* Mozilla, since 1999 */
|
|
white-space: -pre-wrap; /* Opera 4-6 */
|
|
white-space: -o-pre-wrap; /* Opera 7 */
|
|
word-wrap: break-word; /* Internet Explorer 5.5+ */
|
|
}
|
|
</style>
|
|
</head><body>
|
|
<h1>PANIC</h1>
|
|
<pre style="font-weight: bold;">%s</pre>
|
|
<pre>%s</pre>
|
|
</body>
|
|
</html>`
|
|
)
|
|
|
|
var (
|
|
dunno = []byte("???")
|
|
centerDot = []byte("·")
|
|
dot = []byte(".")
|
|
slash = []byte("/")
|
|
)
|
|
|
|
// stack returns a nicely formated stack frame, skipping skip frames
|
|
func stack(skip int) []byte {
|
|
buf := new(bytes.Buffer) // the returned data
|
|
// As we loop, we open files and read them. These variables record the currently
|
|
// loaded file.
|
|
var lines [][]byte
|
|
var lastFile string
|
|
for i := skip; ; i++ { // Skip the expected number of frames
|
|
pc, file, line, ok := runtime.Caller(i)
|
|
if !ok {
|
|
break
|
|
}
|
|
// Print this much at least. If we can't find the source, it won't show.
|
|
fmt.Fprintf(buf, "%s:%d (0x%x)\n", file, line, pc)
|
|
if file != lastFile {
|
|
data, err := ioutil.ReadFile(file)
|
|
if err != nil {
|
|
continue
|
|
}
|
|
lines = bytes.Split(data, []byte{'\n'})
|
|
lastFile = file
|
|
}
|
|
fmt.Fprintf(buf, "\t%s: %s\n", function(pc), source(lines, line))
|
|
}
|
|
return buf.Bytes()
|
|
}
|
|
|
|
// source returns a space-trimmed slice of the n'th line.
|
|
func source(lines [][]byte, n int) []byte {
|
|
n-- // in stack trace, lines are 1-indexed but our array is 0-indexed
|
|
if n < 0 || n >= len(lines) {
|
|
return dunno
|
|
}
|
|
return bytes.TrimSpace(lines[n])
|
|
}
|
|
|
|
// function returns, if possible, the name of the function containing the PC.
|
|
func function(pc uintptr) []byte {
|
|
fn := runtime.FuncForPC(pc)
|
|
if fn == nil {
|
|
return dunno
|
|
}
|
|
name := []byte(fn.Name())
|
|
// The name includes the path name to the package, which is unnecessary
|
|
// since the file name is already included. Plus, it has center dots.
|
|
// That is, we see
|
|
// runtime/debug.*T·ptrmethod
|
|
// and want
|
|
// *T.ptrmethod
|
|
// Also the package path might contains dot (e.g. code.google.com/...),
|
|
// so first eliminate the path prefix
|
|
if lastslash := bytes.LastIndex(name, slash); lastslash >= 0 {
|
|
name = name[lastslash+1:]
|
|
}
|
|
if period := bytes.Index(name, dot); period >= 0 {
|
|
name = name[period+1:]
|
|
}
|
|
name = bytes.Replace(name, centerDot, dot, -1)
|
|
return name
|
|
}
|
|
|
|
// Recovery returns a middleware that recovers from any panics and writes a 500 if there was one.
|
|
// While Martini is in development mode, Recovery will also output the panic as HTML.
|
|
func Recovery() Handler {
|
|
return func(c *Context, log *log.Logger) {
|
|
defer func() {
|
|
if err := recover(); err != nil {
|
|
stack := stack(3)
|
|
log.Printf("PANIC: %s\n%s", err, stack)
|
|
|
|
// Lookup the current responsewriter
|
|
val := c.GetVal(inject.InterfaceOf((*http.ResponseWriter)(nil)))
|
|
res := val.Interface().(http.ResponseWriter)
|
|
|
|
// respond with panic message while in development mode
|
|
var body []byte
|
|
if Env == DEV {
|
|
res.Header().Set("Content-Type", "text/html")
|
|
body = []byte(fmt.Sprintf(panicHtml, err, err, stack))
|
|
}
|
|
|
|
res.WriteHeader(http.StatusInternalServerError)
|
|
if nil != body {
|
|
res.Write(body)
|
|
}
|
|
}
|
|
}()
|
|
|
|
c.Next()
|
|
}
|
|
}
|