95 lines
2.4 KiB
Go
95 lines
2.4 KiB
Go
package main
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import (
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"context"
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"fmt"
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"os"
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"github.com/hashicorp/go-hclog"
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plugin "github.com/hashicorp/go-plugin"
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"gopkg.in/yaml.v3"
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"github.com/crowdsecurity/crowdsec/pkg/protobufs"
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)
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type PluginConfig struct {
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Name string `yaml:"name"`
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LogLevel *string `yaml:"log_level"`
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OutputFile *string `yaml:"output_file"`
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}
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type DummyPlugin struct {
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PluginConfigByName map[string]PluginConfig
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}
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var logger hclog.Logger = hclog.New(&hclog.LoggerOptions{
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Name: "dummy-plugin",
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Level: hclog.LevelFromString("INFO"),
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Output: os.Stderr,
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JSONFormat: true,
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})
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func (s *DummyPlugin) Notify(ctx context.Context, notification *protobufs.Notification) (*protobufs.Empty, error) {
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if _, ok := s.PluginConfigByName[notification.Name]; !ok {
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return nil, fmt.Errorf("invalid plugin config name %s", notification.Name)
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}
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cfg := s.PluginConfigByName[notification.Name]
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if cfg.LogLevel != nil && *cfg.LogLevel != "" {
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logger.SetLevel(hclog.LevelFromString(*cfg.LogLevel))
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}
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logger.Info(fmt.Sprintf("received signal for %s config", notification.Name))
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logger.Debug(notification.Text)
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if cfg.OutputFile != nil && *cfg.OutputFile != "" {
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f, err := os.OpenFile(*cfg.OutputFile, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0o644)
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if err != nil {
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logger.Error(fmt.Sprintf("Cannot open notification file: %s", err))
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}
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if _, err := f.WriteString(notification.Text + "\n"); err != nil {
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f.Close()
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logger.Error(fmt.Sprintf("Cannot write notification to file: %s", err))
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}
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err = f.Close()
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if err != nil {
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logger.Error(fmt.Sprintf("Cannot close notification file: %s", err))
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}
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}
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fmt.Println(notification.Text)
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return &protobufs.Empty{}, nil
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}
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func (s *DummyPlugin) Configure(ctx context.Context, config *protobufs.Config) (*protobufs.Empty, error) {
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d := PluginConfig{}
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err := yaml.Unmarshal(config.Config, &d)
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s.PluginConfigByName[d.Name] = d
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return &protobufs.Empty{}, err
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}
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func main() {
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handshake := plugin.HandshakeConfig{
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ProtocolVersion: 1,
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MagicCookieKey: "CROWDSEC_PLUGIN_KEY",
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MagicCookieValue: os.Getenv("CROWDSEC_PLUGIN_KEY"),
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}
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sp := &DummyPlugin{PluginConfigByName: make(map[string]PluginConfig)}
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plugin.Serve(&plugin.ServeConfig{
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HandshakeConfig: handshake,
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Plugins: map[string]plugin.Plugin{
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"dummy": &protobufs.NotifierPlugin{
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Impl: sp,
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},
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},
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GRPCServer: plugin.DefaultGRPCServer,
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Logger: logger,
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})
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}
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