README
¶
cdc 
The cdc package provides support for reading Chromium disk cache v2.
The disk cache stores resources fetched from the web so that they can be accessed quickly at a latter time if needed.
Learn more:
- https://www.chromium.org/developers/design-documents/network-stack/disk-cache
- http://www.forensicswiki.org/wiki/Google_Chrome#Disk_Cache
- http://www.forensicswiki.org/wiki/Chrome_Disk_Cache_Format
See the example_test.go for an example of how to read an image from cache in testdata.
This project also includes a tool to read the cache from command line, read this README.
Documentation
¶
Overview ¶
Package cdc provides support for reading Chromium disk cache v2. https://www.chromium.org/developers/design-documents/network-stack/disk-cache
Example ¶
Example gets an entry from the cache and prints to stdout.
package main
import (
"fmt"
"image/png"
"log"
"github.com/schorlet/cdc"
)
func main() {
cache, err := cdc.OpenCache("testdata")
if err != nil {
log.Fatal(err)
}
entry, err := cache.OpenURL("https://golang.org/doc/gopher/pkg.png")
if err != nil {
log.Fatal(err)
}
fmt.Println(entry.URL())
header, err := entry.Header()
if err != nil {
log.Fatal(err)
}
for _, key := range []string{"Status", "Content-Length", "Content-Type"} {
fmt.Printf("%s: %s\n", key, header.Get(key))
}
body, err := entry.Body()
if err != nil {
log.Fatal(err)
}
defer body.Close()
config, err := png.DecodeConfig(body)
if err != nil {
log.Fatal(err)
}
fmt.Printf("PNG image data, %d x %d\n", config.Width, config.Height)
}
Output: https://golang.org/doc/gopher/pkg.png Status: 200 Content-Length: 5409 Content-Type: image/png PNG image data, 83 x 120
Index ¶
Examples ¶
Constants ¶
This section is empty.
Variables ¶
var ErrNotFound = errors.New("entry not found")
ErrNotFound is returned if the entry is not found.
Functions ¶
This section is empty.
Types ¶
type Cache ¶
type Cache struct {
// contains filtered or unexported fields
}
Cache gives read access to the chromium disk cache.
The cache is composed of one "index" file, four or more "data_[0-9]" files and many of "f_[0-9]+" separate files.
Learn more: http://www.forensicswiki.org/wiki/Google_Chrome#Disk_Cache http://www.forensicswiki.org/wiki/Chrome_Disk_Cache_Format
func OpenCache ¶
OpenCache opens the cache in dir. Opens the "index" file to read the addresses and then opens each Entry to read the URL and associate it to an address.
func (*Cache) GetAddr ¶
GetAddr returns the address of the URL. An error is returned if the URL is not found.
type Entry ¶
type Entry struct {
// contains filtered or unexported fields
}
Entry represents a HTTP response as stored in the cache. An Entry is stored in one of the "data_[0-9]" files or in a "f_[0-9]+" separate file.
Source Files
Directories