more linter fixes (simplicity mostly)

cmd/crowdsec-cli/api.go

@@ -10,7 +10,6 @@ import (
 
 	"github.com/crowdsecurity/crowdsec/pkg/cwhub"
 	"github.com/crowdsecurity/crowdsec/pkg/outputs"
-	"github.com/crowdsecurity/crowdsec/pkg/sqlite"
 	"github.com/crowdsecurity/crowdsec/pkg/types"
 
 	"github.com/denisbrodbeck/machineid"
@@ -28,13 +27,10 @@ var (
 
 var (
 	apiConfigFile = "api.yaml"
+	userID        string // for flag parsing
+	outputCTX     *outputs.Output
 )
 
-var userID string // for flag parsing
-var dbctx *sqlite.Context
-
-var outputCTX *outputs.Output
-
 func dumpCredentials() error {
 	if config.output == "json" {
 		credsYaml, err := json.Marshal(&outputCTX.API.Creds)

cmd/crowdsec/acquisition.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"fmt"
+
 	"github.com/crowdsecurity/crowdsec/pkg/acquisition"
 )
 
@@ -25,7 +26,7 @@ func loadAcquisition() (*acquisition.FileAcquisCtx, error) {
 	if acquisitionCTX == nil {
 		return nil, fmt.Errorf("no inputs to process")
 	}
-	if cConfig.Profiling == true {
+	if cConfig.Profiling {
 		acquisitionCTX.Profiling = true
 	}
 

pkg/acquisition/file_reader.go

@@ -172,7 +172,7 @@ func AcquisStartReading(ctx *FileAcquisCtx, output chan types.Event, AcquisTomb
 	/* start one go routine reading for each file, and pushing to chan output */
 	for idx, fctx := range ctx.Files {
 		log.Printf("starting reader file %d/%d : %s", idx, len(ctx.Files), fctx.Filename)
-		if ctx.Profiling == true {
+		if ctx.Profiling {
 			fctx.Profiling = true
 		}
 		fctx := fctx
@@ -227,7 +227,7 @@ LOOP:
 			if line.Text == "" { //skip empty lines
 				continue
 			}
-			if ctx.Profiling == true {
+			if ctx.Profiling {
 				ReaderHits.With(prometheus.Labels{"source": ctx.Filename}).Inc()
 			}
 			l.Raw = line.Text

pkg/leakybucket/bucket.go

@@ -405,9 +405,9 @@ func FormatOverflow(l *Leaky, queue *Queue) types.SignalOccurence {
 		am = fmt.Sprintf("%d IPs", len(sig.Sources))
 	} else if len(sig.Sources) == 1 {
 		if sig.Source != nil {
-			am = fmt.Sprintf("%s", sig.Source.Ip.String())
+			am = sig.Source.Ip.String()
 		} else {
-			am = fmt.Sprintf("??")
+			am = "??"
 		}
 	} else {
 		am = "UNKNOWN"

pkg/parser/node.go

@@ -185,10 +185,10 @@ func (n *Node) process(p *types.Event, ctx UnixParserCtx) (bool, error) {
 			clog.Debugf("Event leaving node : ko")
 			return false, nil
 		}
-		switch output.(type) {
+		switch out := output.(type) {
 		case bool:
 			/* filter returned false, don't process Node */
-			if output.(bool) {
+			if out {
 				clog.Infof("Event is whitelisted by Expr !")
 				p.Whitelisted = true
 				set = true

pkg/parser/runtime.go

@@ -39,10 +39,9 @@ func SetTargetByName(target string, value string, evt *types.Event) bool {
 	if evt == nil {
 		return false
 	}
+
 	//it's a hack, we do it for the user
-	if strings.HasPrefix(target, "evt.") {
-		target = target[4:]
-	}
+	target = strings.TrimPrefix(target, "evt.")
 
 	log.Debugf("setting target %s to %s", target, value)
 	defer func() {
@@ -68,7 +67,6 @@ func SetTargetByName(target string, value string, evt *types.Event) bool {
 			/*if we're in a map and the field doesn't exist, the user wants to add it :) */
 			if (tmp == reflect.Value{}) || tmp.IsZero() {
 				log.Debugf("map entry is zero in '%s'", target)
-				//return false
 			}
 			iter.SetMapIndex(reflect.ValueOf(f), reflect.ValueOf(value))
 			return true

plugins/backend/sqlite.go

@@ -28,7 +28,7 @@ func (p *pluginDB) Delete(target string) (int, error) {
 	if err != nil {
 		return 0, err
 	}
-	log.Debugf("deleted '%s' entry from database", nbDel)
+	log.Debugf("deleted '%d' entry from database", nbDel)
 	return nbDel, nil
 }
 
@@ -65,9 +65,5 @@ func (p *pluginDB) ReadAT(timeAT time.Time) ([]map[string]string, error) {
 	return ret, nil
 }
 
-func New() interface{} {
-	return &pluginDB{}
-}
-
 // empty main function is mandatory since we are in a main package
 func main() {}