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report-long-connections.go
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report-long-connections.go
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package reporting
import (
"bytes"
"fmt"
"html/template"
"os"
"strings"
"github.com/activecm/rita/pkg/uconn"
"github.com/activecm/rita/reporting/templates"
"github.com/activecm/rita/resources"
"github.com/globalsign/mgo/bson"
)
func printLongConns(db string, res *resources.Resources) error {
f, err := os.Create("long-conns.html")
if err != nil {
return err
}
defer f.Close()
out, err := template.New("long-conns.html").Parse(templates.LongConnsTempl)
if err != nil {
return err
}
res.DB.SelectDB(db)
sortStr := "maxdur"
sortDirection := -1
thresh := 60 // 1 minute
data := getLongConnsResultsView(res, thresh, sortStr, sortDirection, 1000)
w, err := getLongConnWriter(data)
if err != nil {
return err
}
return out.Execute(f, &templates.ReportingInfo{DB: db, Writer: template.HTML(w)})
}
func getLongConnWriter(conns []uconn.LongConnAnalysisView) (string, error) {
tmpl := "<tr><td>{{.Src}}</td><td>{{.Dst}}</td><td>{{.TupleStr}}</td><td>{{.MaxDuration}}</td></tr>\n"
out, err := template.New("Conn").Parse(tmpl)
if err != nil {
return "", err
}
w := new(bytes.Buffer)
for _, conn := range conns {
conn.TupleStr = strings.Join(conn.Tuples, ", ")
err := out.Execute(w, conn)
if err != nil {
return "", err
}
}
return w.String(), nil
}
//getLongConnsResultsView gets the long connection results
func getLongConnsResultsView(res *resources.Resources, thresh int, sort string, sortDirection int, limit int) []uconn.LongConnAnalysisView {
ssn := res.DB.Session.Copy()
defer ssn.Close()
var longConnResults []uconn.LongConnAnalysisView
longConnQuery := []bson.M{
bson.M{"$match": bson.M{"dat.maxdur": bson.M{"$gt": thresh}}},
bson.M{"$project": bson.M{"maxdur": "$dat.maxdur", "src": "$src", "dst": "$dst", "tuples": bson.M{"$ifNull": []interface{}{"$dat.tuples", []interface{}{}}}}},
bson.M{"$unwind": "$maxdur"},
bson.M{"$unwind": "$tuples"},
bson.M{"$unwind": "$tuples"}, // not an error, must be done twice
bson.M{"$group": bson.M{
"_id": "$_id",
"maxdur": bson.M{"$max": "$maxdur"},
"src": bson.M{"$first": "$src"},
"dst": bson.M{"$first": "$dst"},
"tuples": bson.M{"$addToSet": "$tuples"},
}},
bson.M{"$project": bson.M{
"maxdur": 1,
"src": 1,
"dst": 1,
"tuples": bson.M{"$slice": []interface{}{"$tuples", 5}},
}},
bson.M{"$sort": bson.M{sort: sortDirection}},
bson.M{"$limit": limit},
}
err := ssn.DB(res.DB.GetSelectedDB()).C(res.Config.T.Structure.UniqueConnTable).Pipe(longConnQuery).AllowDiskUse().All(&longConnResults)
if err != nil {
//TODO: properly log this error
fmt.Println(err)
}
return longConnResults
}