CalDav with NextCloud and self-signed certificate

[AlexNathan345]

Unfortunately, I'm unable to to use this module with my NextCloud installation as my SSL certificates are self-signed.

Is there a way to allow for self-signed certificates or disabling the check? Or a step-by-step guide on how to set this up successfully with NextCloud?

Thanks very much for your help!

[eouia]

I'm not experienced with Self-Signed SSL certification. What kind of error or symptom did the module spit out?

[AlexNathan345]

This is the error message I get in the MagicMirror2 log:
23.02.2024 09:11.41.391] [ERROR] FetchError: request to https://XX.XXX.XXX.XX:444/remote.php/dav failed, reason: self-signed certificate
at ClientRequest. (/magicmirror2/modules/MMM-CalDAV/node_modules/node-fetch/lib/index.js:1501:11)
at ClientRequest.emit (node:events:517:28)
at TLSSocket.socketErrorListener (node:_http_client:501:9)
at TLSSocket.emit (node:events:517:28)
at emitErrorNT (node:internal/streams/destroy:151:8)
at emitErrorCloseNT (node:internal/streams/destroy:116:3)
at process.processTicksAndRejections (node:internal/process/task_queues:82:21) {
type: 'system',
errno: 'DEPTH_ZERO_SELF_SIGNED_CERT',
code: 'DEPTH_ZERO_SELF_SIGNED_CERT'

I also tried connecting with http:// but this doesn't work either...

The MM2 config is:
{
module: "MMM-CalDAV", // This module works in background, so position is not needed.
config: {
timeRangeStart: -30, // Get events from 30 days before
timeRangeEnd: 60, // Get events from 60 days from today
servers: [
{ envPrefix: "NEXTCLOUD_",
accountType: 'caldav',
authMethod: 'Basic',
serverUrl: "https://XX.XXX.XXX.XX:444/remote.php/dav",
},
],
}
},
{
module: "calendar",
header: "My upcoming events",
position: "top_left",
config: {
servers: [
{
symbol: "calendar",
url: "http://XX.XXX.XXX.XX:8080/CALDAV/NEXTCLOUD_My_calendar.ics",
auth: { // REQUIRED
user: 'username1', // DEFINED in .env file.
pass: 'password1',
method: 'basic'
},
},
],
}
},

[eouia]

When you try https://USERNAME:PASSWORD@XX.XXX.XXX.XX:444/remote.php/dav in your browser, what happens?

[AlexNathan345]

I get this:
This is the WebDAV interface. It can only be accessed by WebDAV clients such as the Nextcloud desktop sync client.

[eouia]

The error was caused by node-fetch, a dependency of tsdav, which this module depends on. So, I cannot do anything at this moment. Maybe node-fetch seems unable to handle some irregular https certification.
I'll report this error to the node-fetch developers, but I cannot guarantee that it will be fixed soon. Sorry.

[AlexNathan345]

Thanks very much for looking into this. At least now I know that the error isn't in my config. I might try other certificates at some point but don't really need them for NextCloud as it isn't opened up to the internet. But thanks again.

[eouia]

Hmmm.. If I have NextCloud, I could look inside more, but atm I have not enough time to install and play with it. When I have some time, I'll research more.

[AlexNathan345]

All good, don't worry too much.