42 lines
985 B
Go
42 lines
985 B
Go
|
package threema
|
||
|
|
|
||
|
|
import (
|
||
|
|
"encoding/base32"
|
||
|
|
"fmt"
|
||
|
|
"strings"
|
||
|
|
|
||
|
|
"github.com/o3ma/o3"
|
||
|
|
"gosrc.io/xmpp"
|
||
|
|
)
|
||
|
|
|
||
|
|
func strFromThreemaGroup(header *o3.GroupMessageHeader) string {
|
||
|
|
cid := strings.ToLower(header.CreatorID.String())
|
||
|
|
gid := strings.ToLower(base32.StdEncoding.EncodeToString(header.GroupID[:]))
|
||
|
|
return fmt.Sprintf("%s-%s", cid, gid)
|
||
|
|
}
|
||
|
|
func jidFromThreemaGroup(sender string, header *o3.GroupMessageHeader) string {
|
||
|
|
return fmt.Sprintf("%s@{{DOMAIN}}/%s", strFromThreemaGroup(header), sender)
|
||
|
|
}
|
||
|
|
func jidToThreemaGroup(jidS string) (string, *o3.GroupMessageHeader) {
|
||
|
|
jid, err := xmpp.NewJid(jidS)
|
||
|
|
if err != nil {
|
||
|
|
return "", nil
|
||
|
|
}
|
||
|
|
node := strings.ToUpper(jid.Node)
|
||
|
|
a := strings.SplitN(node, "-", 2)
|
||
|
|
if len(a) != 2 {
|
||
|
|
return "", nil
|
||
|
|
}
|
||
|
|
header := &o3.GroupMessageHeader{
|
||
|
|
CreatorID: o3.NewIDString(a[0]),
|
||
|
|
}
|
||
|
|
|
||
|
|
result, err := base32.StdEncoding.DecodeString(a[1])
|
||
|
|
if err != nil {
|
||
|
|
return "", nil
|
||
|
|
}
|
||
|
|
copy(header.GroupID[:], []byte(result))
|
||
|
|
|
||
|
|
return jid.Resource, header
|
||
|
|
}
|