Hi,
I currently am trying to migrate my openhab installation to an other machine.
“Ubuntu Linux 20.04.5” (desktop) / openHAB 3.2.0-> “Ubuntu Linux 22.04.2” (server) / openHAB 3.4.4
One of the last steps is getting two python scripts running on the new machine.
I use the exec binding for that but I always get the following message:
[WARN ] [c.internal.ExecWhitelistWatchService] - Cannot read whitelist file, exec binding commands won't be processed: /etc/openhab/misc/exec.whitelist
I’ve tried the following (with deleting the original file, then uninstalling and reinstalling the binding, to make sure I always used the openhab-provided template. before each step):
- I copied it directly from the old machine
- I’ve edited contents of it in VSCode (accessing it via samba share)
- I’ve edited the contents in a copy of it and the copied the copy to /etc/openhab/misc/ using sudo cp
- reinstall openhab (
sudo apt purge openhab)
So far I have not had any success in elimating the error.
I think the access rights are correct - judging following screenshot:
Here is it’s content:
# For security reasons all commands that are used by the exec binding or transformation need to be whitelisted.
# Every command needs to be listed on a separate line below.
/etc/openhab_related/fritzbox_wifitickets/fritzbox-get-internet-tickets.py
/etc/openhab_related/audiocds/getSubdirectories.py %2$s
I usually am someone who likes figuring stuff out by myself. But I am quite desperate, which is why I am asking you guys to point me into right direction.
Many thanks in advance!
What about the directories with level above exec.whitelist ? Do they allow openhab to look into the directory ?
What is the output of
ls -ld /etc/openhab/misc/exec.whitelist /etc /etc/openhab /etc/openhab/misc
thank you for your fast response.
here is the output of
ls -ld /etc/openhab/misc/exec.whitelist /etc /etc/openhab /etc/openhab/misc
drwxr-xr-x 123 root root 12288 Jun 6 06:09 /etc
drwxr-xr-x 15 openhab openhab 4096 Jun 4 19:51 /etc/openhab
drwxrwxrwx 2 openhab openhab 4096 Jun 10 12:03 /etc/openhab/misc
-rwxr--r-- 1 openhab openhab 303 Jun 10 12:03 /etc/openhab/misc/exec.whitelist
I forgot to mention that so far could observe this message only for the exec.whitelist.
I did not dig too deep - but everything else in /etc/openhab/ seemed to work fine (rules, items, things, persistence).
i just remembered that I forgot to mention that I also tried restoring a recent backup of the old machine on the new machine. I cannot recall the outcome - so i just did that again.
And no success - after starting the opernhab.service the scripts are not executed and changing the exec.whitelist causes the same error.
This topic can be closed.
Since I could not find a solution to this issue - I looked for alternatives to the exec binding.
I am now using the executeCommandLine() in my rules. And so far I did not have any issues 
In the hopes that it might help someone with the same or similar issue I post my solution:
The old way:
For each python script I had a separate exec thing defined:
Thing exec:command:zz_getWifiTickets "zz_getWifiTickets" [ command="/etc/path/to/python/script1.py"]
Thing exec:command:zz_getDirContents "zz_getDirContents" [ command="/etc/path/to/python/script2.py %2$s"]
For each script I had one item - two if the script requires arguments:
Switch getWifiTickets "getWifiTickets" (gPersist_LastState) {channel="exec:command:zz_getWifiTickets:run"}
Switch zz_getDirContents "getDirContents" (gPersist_LastState) {channel="exec:command:zz_getDirContents:run"}
String zz_getDirContents_args "getDirContents_args" (gPersist_LastState) {channel="exec:command:zz_getDirContents:input"}
In my rules I concatenated the script arguments and sendCommand() them to the args item and then trigger the script:
zz_getDirContents_args.sendCommand("'audiocds/" + cdGroup + "' 'dir' '" + room + "_PlayAudioCD_CD_options'")
zz_getDirContents.sendCommand(ON)
The new way:
Now I do not have any things or items to run the script. Instead the script paths are defined in the rules file and I simply executeCommandLine() and pass the arguments:
val String pythonPath = "/usr/bin/python3"
val String scriptPath = "/etc/path/to/python/script1.py"
executeCommandLine(pythonPath, scriptPath)
val String pythonPath = "/usr/bin/python3"
val String scriptPath = "/etc/path/to/python/script2.py"
val String searchDirectory = "audiocds/" + cdGroup
val String searchType = "dir"
val String responseItem = room + "_PlayAudioCD_CD_options"
executeCommandLine(pythonPath, scriptPath, searchDirectory, searchType, responseItem)
