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package main
import (
"bytes"
"compress/gzip"
"encoding/xml"
"fmt"
"html/template"
"io/ioutil"
"math/rand"
"net/http"
"os"
)
// CpeList is CPE list
type CpeList struct {
CpeItems []CpeItem `xml:"cpe-item"`
}
// CpeItem has CPE information
type CpeItem struct {
Name string `xml:"name,attr"`
Cpe23Item Cpe23Item `xml:"cpe23-item"`
}
// Cpe23Item has CPE 2.3 information
type Cpe23Item struct {
Name string `xml:"name,attr"`
}
// Pair has fs and uri
type Pair struct {
URI string
FS string
}
func main() {
url := "http://static.nvd.nist.gov/feeds/xml/cpe/dictionary/official-cpe-dictionary_v2.3.xml.gz"
resp, err := http.Get(url)
if err != nil || resp.StatusCode != 200 {
fmt.Printf("HTTP error. errs: %s, url: %s", err, url)
return
}
body, _ := ioutil.ReadAll(resp.Body)
defer resp.Body.Close()
b := bytes.NewBufferString(string(body))
reader, err := gzip.NewReader(b)
defer reader.Close()
if err != nil {
fmt.Printf("Failed to decompress NVD feedfile. url: %s, err: %s", url, err)
return
}
bytes, err := ioutil.ReadAll(reader)
if err != nil {
fmt.Printf("Failed to Read NVD feedfile. url: %s, err: %s", url, err)
return
}
cpeList := CpeList{}
if err = xml.Unmarshal(bytes, &cpeList); err != nil {
fmt.Printf("Failed to unmarshal. url: %s, err: %s", url, err)
return
}
var uriList, fsList []string
for _, cpeItem := range cpeList.CpeItems {
uriList = append(uriList, cpeItem.Name)
fsList = append(fsList, cpeItem.Cpe23Item.Name)
}
shuffle(fsList)
pair := []Pair{}
for i, uri := range uriList {
pair = append(pair, Pair{
URI: uri,
FS: fsList[i],
})
}
fmt.Printf("%d data...\n", len(cpeList.CpeItems))
fmt.Println("Generating test code...")
t := template.Must(template.ParseFiles("dictionary_test.tmpl"))
file, _ := os.Create(`./dictionary_test.go`)
defer file.Close()
t.Execute(file, map[string]interface{}{
"Pair": pair,
})
}
func shuffle(data []string) {
n := len(data)
for i := n - 1; i >= 0; i-- {
j := rand.Intn(i + 1)
data[i], data[j] = data[j], data[i]
}
}
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