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WIP: add tengo support when downloading files #1307

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WIP: add tengo support when downloading files #1307

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60 changes: 60 additions & 0 deletions bridge/helper/helper.go
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Original file line number Diff line number Diff line change
Expand Up @@ -16,7 +16,11 @@ import (

"golang.org/x/image/webp"

"github.com/42wim/matterbridge/bridge"
"github.com/42wim/matterbridge/bridge/config"
"github.com/42wim/matterbridge/internal"
"github.com/d5/tengo/v2"
"github.com/d5/tengo/v2/stdlib"
"github.com/gomarkdown/markdown"
"github.com/gomarkdown/markdown/html"
"github.com/gomarkdown/markdown/parser"
Expand Down Expand Up @@ -114,6 +118,62 @@ func GetAvatar(av map[string]string, userid string, general *config.Protocol) st
return ""
}

func handleDownloadTengo(br *bridge.Bridge, msg *config.Message, name string, size int64, general *config.Protocol) (bool, error) {
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Function handleDownloadTengo has 5 arguments (exceeds 4 allowed). Consider refactoring.

var (
res []byte
err error
drop bool
)

filename := br.GetString("tengo.download")

if filename == "" {
res, err = internal.Asset("tengo/download.tengo")
if err != nil {
return drop, err
}
} else {
res, err = ioutil.ReadFile(filename)
if err != nil {
return drop, err
}
}

s := tengo.NewScript(res)

s.SetImports(stdlib.GetModuleMap(stdlib.AllModuleNames()...))

_ = s.Add("inAccount", msg.Account)
_ = s.Add("inProtocol", msg.Protocol)
_ = s.Add("inChannel", msg.Channel)
_ = s.Add("inGateway", msg.Gateway)
_ = s.Add("inEvent", msg.Event)
_ = s.Add("outAccount", br.Account)
_ = s.Add("outProtocol", br.Protocol)
_ = s.Add("outChannel", msg.Channel)
_ = s.Add("outEvent", msg.Event)
_ = s.Add("msgText", msg.Text)
_ = s.Add("msgUsername", msg.Username)
_ = s.Add("msgDrop", drop)
_ = s.Add("downloadName", name)
_ = s.Add("downloadSize", size)

c, err := s.Compile()
if err != nil {
return drop, err
}

if err := c.Run(); err != nil {
return drop, err
}

drop = c.Get("msgDrop").Bool()
msg.Text = c.Get("msgText").String()
msg.Username = c.Get("msgUsername").String()

return drop, nil
}

// HandleDownloadSize checks a specified filename against the configured download blacklist
// and checks a specified file-size against the configure limit.
func HandleDownloadSize(logger *logrus.Entry, msg *config.Message, name string, size int64, general *config.Protocol) error {
Expand Down