104 lines
		
	
	
		
			2.6 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
			
		
		
	
	
			104 lines
		
	
	
		
			2.6 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
package reporter
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import (
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	"bytes"
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	"context"
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	"fmt"
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	"net/http"
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	"regexp"
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	"strings"
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	"time"
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	"github.com/future-architect/vuls/config"
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	"github.com/future-architect/vuls/models"
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	"github.com/future-architect/vuls/util"
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	"golang.org/x/xerrors"
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)
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// GoogleChatWriter send report to GoogleChat
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type GoogleChatWriter struct {
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	Cnf   config.GoogleChatConf
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	Proxy string
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}
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// Write results to Google Chat
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func (w GoogleChatWriter) Write(rs ...models.ScanResult) (err error) {
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	re := regexp.MustCompile(w.Cnf.ServerNameRegexp)
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	for _, r := range rs {
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		if re.Match([]byte(r.FormatServerName())) {
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			continue
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		}
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		msgs := []string{fmt.Sprintf("*%s*\n%s\t%s\t%s",
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			r.ServerInfo(),
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			r.ScannedCves.FormatCveSummary(),
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			r.ScannedCves.FormatFixedStatus(r.Packages),
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			r.FormatUpdatablePkgsSummary())}
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		for _, vinfo := range r.ScannedCves.ToSortedSlice() {
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			max := vinfo.MaxCvssScore().Value.Score
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			exploits := ""
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			if 0 < len(vinfo.Exploits) || 0 < len(vinfo.Metasploits) {
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				exploits = "*PoC*"
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			}
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			link := ""
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			if strings.HasPrefix(vinfo.CveID, "CVE-") {
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				link = fmt.Sprintf("https://nvd.nist.gov/vuln/detail/%s", vinfo.CveID)
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			} else if strings.HasPrefix(vinfo.CveID, "WPVDBID-") {
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				link = fmt.Sprintf("https://wpscan.com/vulnerabilities/%s", strings.TrimPrefix(vinfo.CveID, "WPVDBID-"))
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			}
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			msgs = append(msgs, fmt.Sprintf(`%s %s %4.1f %5s %s`,
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				vinfo.CveIDDiffFormat(),
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				link,
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				max,
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				vinfo.AttackVector(),
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				exploits))
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			if len(msgs) == 50 {
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				msgs = append(msgs, "(The rest is omitted.)")
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				break
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			}
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		}
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		if len(msgs) == 1 && w.Cnf.SkipIfNoCve {
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			msgs = []string{}
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		}
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		if len(msgs) != 0 {
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			if err = w.postMessage(strings.Join(msgs, "\n")); err != nil {
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				return err
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			}
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		}
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	}
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	return nil
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}
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func (w GoogleChatWriter) postMessage(message string) error {
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	uri := fmt.Sprintf("%s", w.Cnf.WebHookURL)
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	payload := `{"text": "` + message + `" }`
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	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
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	req, err := http.NewRequestWithContext(ctx, http.MethodPost, uri, bytes.NewBuffer([]byte(payload)))
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	defer cancel()
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	if err != nil {
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		return err
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	}
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	req.Header.Add("Content-Type", "application/json; charset=utf-8")
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	client, err := util.GetHTTPClient(w.Proxy)
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	if err != nil {
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		return err
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	}
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	resp, err := client.Do(req)
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	if checkResponse(resp) != nil && err != nil {
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		return err
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	}
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	defer resp.Body.Close()
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	return nil
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}
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func (w GoogleChatWriter) checkResponse(r *http.Response) error {
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	if c := r.StatusCode; 200 <= c && c <= 299 {
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		return nil
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	}
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	return xerrors.Errorf("API call to %s failed: %s", r.Request.URL.String(), r.Status)
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}
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