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main.go
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main.go
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package main
import (
"bufio"
"bytes"
"context"
"encoding/json"
"io/ioutil"
"net/http"
"os"
"path/filepath"
"regexp"
"strings"
"time"
"github.com/eth0izzle/shhgit/core"
"github.com/fatih/color"
)
type MatchEvent struct {
Url string
Matches []string
Signature string
File string
Stars int
Source core.GitResourceType
}
var session = core.GetSession()
func ProcessRepositories() {
threadNum := *session.Options.Threads
for i := 0; i < threadNum; i++ {
go func(tid int) {
for {
timeout := time.Duration(*session.Options.CloneRepositoryTimeout) * time.Second
_, cancel := context.WithTimeout(context.Background(), timeout)
defer cancel()
repository := <-session.Repositories
repo, err := core.GetRepository(session, repository.Id)
if err != nil {
session.Log.Warn("Failed to retrieve repository %d: %s", repository.Id, err)
continue
}
if repo.GetPermissions()["pull"] &&
uint(repo.GetStargazersCount()) >= *session.Options.MinimumStars &&
uint(repo.GetSize()) < *session.Options.MaximumRepositorySize {
processRepositoryOrGist(repo.GetCloneURL(), repository.Ref, repo.GetStargazersCount(), core.GITHUB_SOURCE)
}
}
}(i)
}
}
func ProcessGists() {
threadNum := *session.Options.Threads
for i := 0; i < threadNum; i++ {
go func(tid int) {
for {
gistUrl := <-session.Gists
processRepositoryOrGist(gistUrl, "", -1, core.GIST_SOURCE)
}
}(i)
}
}
func ProcessComments() {
threadNum := *session.Options.Threads
for i := 0; i < threadNum; i++ {
go func(tid int) {
for {
commentBody := <-session.Comments
dir := core.GetTempDir(core.GetHash(commentBody))
ioutil.WriteFile(filepath.Join(dir, "comment.ignore"), []byte(commentBody), 0644)
if !checkSignatures(dir, "ISSUE", 0, core.GITHUB_COMMENT) {
os.RemoveAll(dir)
}
}
}(i)
}
}
func processRepositoryOrGist(url string, ref string, stars int, source core.GitResourceType) {
var (
matchedAny bool = false
)
dir := core.GetTempDir(core.GetHash(url))
_, err := core.CloneRepository(session, url, ref, dir)
if err != nil {
session.Log.Debug("[%s] Cloning failed: %s", url, err.Error())
os.RemoveAll(dir)
return
}
session.Log.Debug("[%s] Cloning %s in to %s", url, ref, strings.Replace(dir, *session.Options.TempDirectory, "", -1))
matchedAny = checkSignatures(dir, url, stars, source)
if !matchedAny {
os.RemoveAll(dir)
}
}
func checkSignatures(dir string, url string, stars int, source core.GitResourceType) (matchedAny bool) {
for _, file := range core.GetMatchingFiles(dir) {
var (
matches []string
relativeFileName string
)
if strings.Contains(dir, *session.Options.TempDirectory) {
relativeFileName = strings.Replace(file.Path, *session.Options.TempDirectory, "", -1)
} else {
relativeFileName = strings.Replace(file.Path, dir, "", -1)
}
if *session.Options.SearchQuery != "" {
queryRegex := regexp.MustCompile(*session.Options.SearchQuery)
for _, match := range queryRegex.FindAllSubmatch(file.Contents, -1) {
matches = append(matches, string(match[0]))
}
if matches != nil {
count := len(matches)
m := strings.Join(matches, ", ")
session.Log.Important("[%s] %d %s for %s in file %s: %s", url, count, core.Pluralize(count, "match", "matches"), color.GreenString("Search Query"), relativeFileName, color.YellowString(m))
session.WriteToCsv([]string{url, "Search Query", relativeFileName, m})
}
} else {
for _, signature := range session.Signatures {
if matched, part := signature.Match(file); matched {
if part == core.PartContents {
if matches = signature.GetContentsMatches(file.Contents); len(matches) > 0 {
count := len(matches)
m := strings.Join(matches, ", ")
publish(&MatchEvent{Source: source, Url: url, Matches: matches, Signature: signature.Name(), File: relativeFileName, Stars: stars})
matchedAny = true
session.Log.Important("[%s] %d %s for %s in file %s: %s", url, count, core.Pluralize(count, "match", "matches"), color.GreenString(signature.Name()), relativeFileName, color.YellowString(m))
session.WriteToCsv([]string{url, signature.Name(), relativeFileName, m})
}
} else {
if *session.Options.PathChecks {
publish(&MatchEvent{Source: source, Url: url, Matches: matches, Signature: signature.Name(), File: relativeFileName, Stars: stars})
matchedAny = true
session.Log.Important("[%s] Matching file %s for %s", url, color.YellowString(relativeFileName), color.GreenString(signature.Name()))
session.WriteToCsv([]string{url, signature.Name(), relativeFileName, ""})
}
if *session.Options.EntropyThreshold > 0 && file.CanCheckEntropy() {
scanner := bufio.NewScanner(bytes.NewReader(file.Contents))
for scanner.Scan() {
line := scanner.Text()
if len(line) > 6 && len(line) < 100 {
entropy := core.GetEntropy(line)
if entropy >= *session.Options.EntropyThreshold {
blacklistedMatch := false
for _, blacklistedString := range session.Config.BlacklistedStrings {
if strings.Contains(strings.ToLower(line), strings.ToLower(blacklistedString)) {
blacklistedMatch = true
}
}
if !blacklistedMatch {
publish(&MatchEvent{Source: source, Url: url, Matches: []string{line}, Signature: "High entropy string", File: relativeFileName, Stars: stars})
matchedAny = true
session.Log.Important("[%s] Potential secret in %s = %s", url, color.YellowString(relativeFileName), color.GreenString(line))
session.WriteToCsv([]string{url, "High entropy string", relativeFileName, line})
}
}
}
}
}
}
}
}
}
if !matchedAny && len(*session.Options.Local) <= 0 {
os.Remove(file.Path)
}
}
return
}
func publish(event *MatchEvent) {
// todo: implement a modular plugin system to handle the various outputs (console, live, csv, webhooks, etc)
if len(*session.Options.Live) > 0 {
data, _ := json.Marshal(event)
http.Post(*session.Options.Live, "application/json", bytes.NewBuffer(data))
}
}
func main() {
session.Log.Info(color.HiBlueString(core.Banner))
session.Log.Info("\t%s\n", color.HiCyanString(core.Author))
session.Log.Info("[*] Loaded %s signatures. Using %s worker threads. Temp work dir: %s\n", color.BlueString("%d", len(session.Signatures)), color.BlueString("%d", *session.Options.Threads), color.BlueString(*session.Options.TempDirectory))
if len(*session.Options.Local) > 0 {
session.Log.Info("[*] Scanning local directory: %s - skipping public repository checks...", color.BlueString(*session.Options.Local))
rc := 0
if checkSignatures(*session.Options.Local, *session.Options.Local, -1, core.LOCAL_SOURCE) {
rc = 1
} else {
session.Log.Info("[*] No matching secrets found in %s!", color.BlueString(*session.Options.Local))
}
os.Exit(rc)
} else {
if *session.Options.SearchQuery != "" {
session.Log.Important("Search Query '%s' given. Only returning matching results.", *session.Options.SearchQuery)
}
go core.GetRepositories(session)
go ProcessRepositories()
go ProcessComments()
if *session.Options.ProcessGists {
go core.GetGists(session)
go ProcessGists()
}
spinny := core.ShowSpinner()
select {}
spinny()
}
}