156 lines
2.7 KiB
Go
156 lines
2.7 KiB
Go
package matcher
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import (
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"bufio"
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"context"
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"encoding/json"
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"fmt"
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"io/ioutil"
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"os"
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"path/filepath"
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"regexp"
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"runtime"
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"sync"
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"time"
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"github.com/dgraph-io/dgo/v2"
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"github.com/google/uuid"
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"github.com/sirupsen/logrus"
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"github.com/spf13/viper"
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"gitlab.dcso.lolcat/LABS/styx/models"
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)
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var (
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_, b, _, _ = runtime.Caller(0)
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basepath = filepath.Dir(b)
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)
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type Matcher struct {
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Running bool
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StopChan chan bool
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StoppedChan chan bool
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}
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func (m *Matcher) Initialize() bool {
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if !viper.GetBool("matcher.activated") {
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return false
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}
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logrus.Info("matching is activated")
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return true
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}
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func (m *Matcher) Stop(wg *sync.WaitGroup) {
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if m.Running {
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m.StopChan = make(chan bool)
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close(m.StopChan)
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<-m.StopChan
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wg.Done()
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m.Running = false
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}
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}
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type Result struct {
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Result []models.Node `json:"Node,omiempty"`
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}
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// Run runs the routine trying to find matches in the ingested data.
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func (m *Matcher) Run(wg *sync.WaitGroup, graphClient *dgo.Dgraph) {
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if !m.Running {
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m.StoppedChan = make(chan bool)
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wg.Add(1)
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for {
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q := `query allofterms($a: string) {
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Node(func: allofterms(full, $a)) {
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uid
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id
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type
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ndata
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pasteNode {
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id
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type
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created
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modified
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fullPaste {
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full
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meta {
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full_url
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size
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expire
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title
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syntax
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user
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scrape_url
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date
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key
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}
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}
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}
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}
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}`
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ctx := context.Background()
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txn := graphClient.NewTxn()
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defer txn.Discard(ctx)
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res, err := txn.QueryWithVars(ctx, q, map[string]string{"$a": "code"})
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if err != nil {
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logrus.Warn(err)
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}
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n := Result{}
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json.Unmarshal([]byte(res.Json), &n)
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if len(n.Result) != 0 {
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// TODO: review time and id to be updated on new resulsts
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uuid := uuid.New().String()
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t := time.Now()
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rfc3339time := t.Format(time.RFC3339)
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matcher := models.Match{
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ID: uuid,
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Timestamp: rfc3339time,
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Target: "code",
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}
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for _, res := range n.Result {
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matcher.Nodes = append(matcher.Nodes, res)
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}
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fmt.Println("matcher:", matcher)
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}
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m.Running = true
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}
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}
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}
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// RunDomainMatch looks for a target within the identified IOCs in /matcher/data.
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// the function could be refactored with RunDomainFilters
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func RunDomainMatch(domain string) bool {
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path := basepath + "/data/domains.txt"
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sliceDomain, err := ioutil.ReadDir(path)
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if err != nil {
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logrus.Warn("matcher#ReadDir#domains", err)
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}
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for _, file := range sliceDomain {
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f, err := os.OpenFile(path+file.Name(), 1, 0644)
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if err != nil {
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logrus.Warn("matcher#OpenFile#", err)
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}
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scanner := bufio.NewScanner(f)
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for scanner.Scan() {
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r, err := regexp.Compile(scanner.Text())
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if err != nil {
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logrus.Warn("matcher#Compile#", err)
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}
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if r.MatchString(domain) {
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return false
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}
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}
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}
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return true
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}
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