mirror of
https://github.com/Luzifer/twitch-bot.git
synced 2024-11-08 16:20:02 +00:00
133 lines
3.5 KiB
Go
133 lines
3.5 KiB
Go
package main
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import (
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"bytes"
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"context"
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"encoding/json"
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"os"
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"os/exec"
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"github.com/go-irc/irc"
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"github.com/pkg/errors"
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"github.com/Luzifer/twitch-bot/v2/pkg/twitch"
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"github.com/Luzifer/twitch-bot/v2/plugins"
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)
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func init() {
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registerAction("script", func() plugins.Actor { return &ActorScript{} })
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registerActorDocumentation(plugins.ActionDocumentation{
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Description: "Execute external script / command",
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Name: "Execute Script / Command",
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Type: "script",
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Fields: []plugins.ActionDocumentationField{
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{
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Default: "",
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Description: "Command to execute",
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Key: "command",
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Name: "Command",
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Optional: false,
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SupportTemplate: true,
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Type: plugins.ActionDocumentationFieldTypeStringSlice,
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},
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{
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Default: "false",
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Description: "Do not activate cooldown for route when command exits non-zero",
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Key: "skip_cooldown_on_error",
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Name: "Skip Cooldown on Error",
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Optional: true,
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SupportTemplate: false,
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Type: plugins.ActionDocumentationFieldTypeBool,
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},
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},
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})
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}
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type ActorScript struct{}
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func (a ActorScript) Execute(c *irc.Client, m *irc.Message, r *plugins.Rule, eventData *plugins.FieldCollection, attrs *plugins.FieldCollection) (preventCooldown bool, err error) {
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command, err := attrs.StringSlice("command")
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if err != nil {
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return false, errors.Wrap(err, "getting command")
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}
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for i := range command {
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tmp, err := formatMessage(command[i], m, r, eventData)
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if err != nil {
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return false, errors.Wrap(err, "execute command argument template")
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}
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command[i] = tmp
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}
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ctx, cancel := context.WithTimeout(context.Background(), cfg.CommandTimeout)
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defer cancel()
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var (
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stdin = new(bytes.Buffer)
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stdout = new(bytes.Buffer)
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)
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scriptInput := map[string]interface{}{
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"badges": twitch.ParseBadgeLevels(m),
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"channel": plugins.DeriveChannel(m, eventData),
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"username": plugins.DeriveUser(m, eventData),
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}
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if m != nil {
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scriptInput["message"] = m.Trailing()
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scriptInput["tags"] = m.Tags
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}
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if err := json.NewEncoder(stdin).Encode(scriptInput); err != nil {
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return false, errors.Wrap(err, "encoding script input")
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}
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cmd := exec.CommandContext(ctx, command[0], command[1:]...) // #nosec G204 // This is expected to call a command with parameters
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cmd.Env = os.Environ()
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cmd.Stderr = os.Stderr
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cmd.Stdin = stdin
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cmd.Stdout = stdout
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if err := cmd.Run(); err != nil {
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return attrs.MustBool("skip_cooldown_on_error", ptrBoolFalse), errors.Wrap(err, "running command")
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}
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if stdout.Len() == 0 {
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// Script was successful but did not yield actions
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return false, nil
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}
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var (
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actions []*plugins.RuleAction
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decoder = json.NewDecoder(stdout)
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)
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decoder.DisallowUnknownFields()
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if err := decoder.Decode(&actions); err != nil {
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return false, errors.Wrap(err, "decoding actions output")
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}
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for _, action := range actions {
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apc, err := triggerAction(c, m, r, action, eventData)
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if err != nil {
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return preventCooldown, errors.Wrap(err, "execute returned action")
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}
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preventCooldown = preventCooldown || apc
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}
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return preventCooldown, nil
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}
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func (a ActorScript) IsAsync() bool { return false }
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func (a ActorScript) Name() string { return "script" }
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func (a ActorScript) Validate(attrs *plugins.FieldCollection) (err error) {
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if cmd, err := attrs.StringSlice("command"); err != nil || len(cmd) == 0 {
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return errors.New("command must be slice of strings with length > 0")
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}
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return nil
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}
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