Gogs version

0.13.0+dev

Git version

• Server: 2.32.0
• Client: 2.33.0.windows.2

Operating system

Raspbian GNU/Linux 11 (bullseye)

Database

SQLite 3

Describe the bug

Unable to use LDAP auth with gogs running on a Raspberry PI 4 (ARM) due to LDAP v2 library issues with memory alignment of data structures

To reproduce

Try to add LDAP auth on a gogs server running on Raspberry PI 4 (ARM) device.

Expected behavior

Be able to login with LDAP like on any other platform

Additional context

I've tried to connect my gogs (running on a Raspberry Pi 4) to an LDAP server, but without any success, when I try to log into gogs it gives an error and all I get from the logs is:

2022/02/05 22:27:42 [TRACE] LDAP will use BindDN
2022/02/05 22:27:42 [TRACE] Search for LDAP user: ***redacted***
2022/02/05 22:27:42 [TRACE] LDAP: Failed to bind as BindDN '***redacted***': LDAP Result Code 200 "Network Error": ldap: response channel closed

I've found that there was an issue in the LDAP library with ARM processors, due to a memory structure alignment issue: go-ldap/ldap#199

Some time ago, I've encountred the same issue into portainer project: portainer/portainer#3244

The fix is into version v3 of the LDAP library, now gogs is using the v2 "gopkg.in/ldap.v2". Is it possible to update to "gopkg.in/ldap.v3"?

With portainer all I've done is the simple upgrade that has worked like a charm wihtout any other chnage (it seems to be backwards compatible).

Thanks,
Simone

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