add trivy parser (#981)

* add trivy parser

* fix test

* format

* add title and summary

* add trivy parse command

* add uploader

* set args by env

* add README

* add err check

* fix

* fix

* fix

* fix test

* update trivy

* refactor

* delete require uuid

* delete uuid from trivy parser

Co-authored-by: Kota Kanbe <kotakanbe@gmail.com>

contrib/trivy/cmd/main.go

@@ -0,0 +1,73 @@
+package main
+
+import (
+	"bufio"
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+
+	"github.com/future-architect/vuls/contrib/trivy/parser"
+	"github.com/future-architect/vuls/models"
+	"github.com/spf13/cobra"
+)
+
+var (
+	serverUUID   string
+	stdIn        bool
+	jsonDir      string
+	jsonFileName string
+)
+
+func main() {
+	var err error
+	var cmdTrivyToVuls = &cobra.Command{
+		Use:   "parse",
+		Short: "Parse trivy json to vuls results",
+		Long:  `Parse trivy json to vuls results`,
+		Run: func(cmd *cobra.Command, args []string) {
+			jsonFilePath := filepath.Join(jsonDir, jsonFileName)
+			var trivyJSON []byte
+			if stdIn {
+				reader := bufio.NewReader(os.Stdin)
+				buf := new(bytes.Buffer)
+				if _, err = buf.ReadFrom(reader); err != nil {
+					return
+				}
+				trivyJSON = buf.Bytes()
+			} else {
+				if trivyJSON, err = ioutil.ReadFile(jsonFilePath); err != nil {
+					fmt.Println("Failed to read file", err)
+					return
+				}
+			}
+
+			scanResult := &models.ScanResult{
+				JSONVersion: models.JSONVersion,
+				ScannedCves: models.VulnInfos{},
+			}
+			if scanResult, err = parser.Parse(trivyJSON, scanResult); err != nil {
+				fmt.Println("Failed to execute command", err)
+				return
+			}
+			var resultJSON []byte
+			if resultJSON, err = json.MarshalIndent(scanResult, "", "   "); err != nil {
+				fmt.Println("Failed to create json", err)
+				return
+			}
+			fmt.Println(string(resultJSON))
+			return
+		},
+	}
+	cmdTrivyToVuls.Flags().BoolVarP(&stdIn, "stdin", "s", false, "input from stdin")
+	cmdTrivyToVuls.Flags().StringVarP(&jsonDir, "trivy-json-dir", "d", "./", "trivy json dir")
+	cmdTrivyToVuls.Flags().StringVarP(&jsonFileName, "trivy-json-file-name", "f", "results.json", "trivy json file name")
+
+	var rootCmd = &cobra.Command{Use: "trivy-to-vuls"}
+	rootCmd.AddCommand(cmdTrivyToVuls)
+	if err = rootCmd.Execute(); err != nil {
+		fmt.Println("Failed to execute command", err)
+	}
+}