109 lines
2.7 KiB
Go
109 lines
2.7 KiB
Go
package parser
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import (
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"fmt"
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"os"
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"path"
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"strings"
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"github.com/crowdsecurity/crowdsec/pkg/csconfig"
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"github.com/crowdsecurity/grokky"
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log "github.com/sirupsen/logrus"
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)
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type UnixParserCtx struct {
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Grok grokky.Host
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Stages []string
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Profiling bool
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DataFolder string
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}
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type Parsers struct {
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Ctx *UnixParserCtx
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Povfwctx *UnixParserCtx
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StageFiles []Stagefile
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PovfwStageFiles []Stagefile
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Nodes []Node
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Povfwnodes []Node
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EnricherCtx EnricherCtx
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}
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func Init(c map[string]interface{}) (*UnixParserCtx, error) {
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r := UnixParserCtx{}
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r.Grok = grokky.NewBase()
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files, err := os.ReadDir(c["patterns"].(string))
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if err != nil {
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return nil, err
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}
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r.DataFolder = c["data"].(string)
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for _, f := range files {
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if strings.Contains(f.Name(), ".") {
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continue
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}
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if err := r.Grok.AddFromFile(path.Join(c["patterns"].(string), f.Name())); err != nil {
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log.Errorf("failed to load pattern %s : %v", f.Name(), err)
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return nil, err
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}
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}
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log.Debugf("Loaded %d pattern files", len(files))
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return &r, nil
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}
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func LoadParsers(cConfig *csconfig.Config, parsers *Parsers) (*Parsers, error) {
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var err error
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patternsDir := path.Join(cConfig.Crowdsec.ConfigDir, "patterns/")
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log.Infof("Loading grok library %s", patternsDir)
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/* load base regexps for two grok parsers */
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parsers.Ctx, err = Init(map[string]interface{}{"patterns": patternsDir,
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"data": cConfig.Crowdsec.DataDir})
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if err != nil {
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return parsers, fmt.Errorf("failed to load parser patterns : %v", err)
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}
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parsers.Povfwctx, err = Init(map[string]interface{}{"patterns": patternsDir,
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"data": cConfig.Crowdsec.DataDir})
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if err != nil {
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return parsers, fmt.Errorf("failed to load postovflw parser patterns : %v", err)
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}
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/*
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Load enrichers
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*/
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log.Infof("Loading enrich plugins")
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parsers.EnricherCtx, err = Loadplugin(cConfig.Crowdsec.DataDir)
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if err != nil {
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return parsers, fmt.Errorf("Failed to load enrich plugin : %v", err)
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}
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/*
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Load the actual parsers
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*/
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log.Infof("Loading parsers from %d files", len(parsers.StageFiles))
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parsers.Nodes, err = LoadStages(parsers.StageFiles, parsers.Ctx, parsers.EnricherCtx)
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if err != nil {
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return parsers, fmt.Errorf("failed to load parser config : %v", err)
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}
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if len(parsers.PovfwStageFiles) > 0 {
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log.Infof("Loading postoverflow parsers")
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parsers.Povfwnodes, err = LoadStages(parsers.PovfwStageFiles, parsers.Povfwctx, parsers.EnricherCtx)
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} else {
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parsers.Povfwnodes = []Node{}
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log.Infof("No postoverflow parsers to load")
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}
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if err != nil {
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return parsers, fmt.Errorf("failed to load postoverflow config : %v", err)
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}
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if cConfig.Prometheus != nil && cConfig.Prometheus.Enabled {
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parsers.Ctx.Profiling = true
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parsers.Povfwctx.Profiling = true
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}
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return parsers, nil
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}
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