glauth ldap backend

[prusaman]

@girish

wget https://raw.githubusercontent.com/glauth/glauth/e7195ed983715383bd5df1dc521f8c17d34d6a50/v2/sample-simple.cfg -O /tmp/ldap.cfg

the releases section has precompiled bins here https://github.com/glauth/glauth/releases/

if using docker
docker run -d --name glauth -p 389:3893 -v /tmp/ldap.cfg:/app/config/config.cfg glauth/glauth-plugins

inside cloudron

Provider: other
Server URL: ldap://127.0.0.1:389
BseDN: dc=glauth,dc=com
Filter: (objectClass=posixAccount)
Username Field: uid
Bind DN: serviceuser,dc=glauth,dc=com | cn=serviceuser,ou=svcaccts,dc=glauth,dc=com # either work
Bind Password: mysecret

save and synchronize

user accounts load into users section correctly. Logging into the accounts produces the following error in glauth:

15:52:23.394913 findUser ▶ WARN 00c  "level"=2 "msg"="BindDN not part of our BaseDN"  "basedn"="dc=glauth,dc=com" "binddn"="johndoe"

pcap:

15:52:23.394496 IP localhost.60316 > localhost.ldap: Flags [P.], seq 1:28, ack 1, win 512, options [nop,nop,TS val 293
1810893 ecr 2931810893], length 27
0x0000:  4500 004f 6b42 4000 4006 d164 7f00 0001  E..OkB@.@..d....
0x0010:  7f00 0001 eb9c 0185 6c39 a418 9a16 2259  ........l9...."Y
0x0020:  8018 0200 fe43 0000 0101 080a aebf e24d  .....C.........M
0x0030:  aebf e24d 3019 0201 0160 1402 0103 0407  ...M0....`......
0x0040:  6a6f 686e 646f 6580 0664 6f67 6f6f 64    johndoe..dogood

ldapsearch -LLL -H ldap://localhost:389 -D serviceuser,dc=glauth,dc=com -w mysecret -x -bdc=glauth,dc=com
succeeds

ldapsearch -LLL -H ldap://localhost:389 -D serviceuser -w mysecret -x -bdc=glauth,dc=com
ldap_bind: Invalid credentials (49)

ldapsearch -LLL -H ldap://localhost:3893 -D johndoe,dc=glauth,dc=com -w dogood -x -bdc=glauth,dc=com '(objectClass=posixAccount)'
succeeds if I add

[[users.capabilities]]
    action = "search"
    object = "*"

but I still get

ldapsearch -LLL -H ldap://localhost:389 -D johndoe -w dogood -x -bdc=glauth,dc=com '(objectClass=posixAccount)'
ldap_bind: Invalid credentials (49)

What Im looking at is potentially adding an External Directory Provider that simply appends "dc=glauth,dc=com" to the result of the search prior to the bind.

ie: johndoe@dc=glauth,dc=com or johndoe@glauth.com rather than just johndoe

[nebulon]

@prusaman not 100% sure I get the issue. But it seems like the user bind from Cloudron to your glauth instance fails. Generally what our (in this case client side) implementation does is to search for a user record, after a potential admin bind if needed. Then once a user record is found, we take thedn of that record (which was delivered from your server in the previous search call) and just use it as bind identifier. So maybe you can reconfigure your glauth instance to return a dn in the user record which matches what your bind call expects?

[prusaman]

@nebulon yeah this exactly. I can use the DN instead of the UID but the problem then became the tolower() function on the cloudron side would fail. Currently I patched glauth to stop checking for bindDN being part of the baseDN but I dont think its the ideal long term solution. Im not sure what portion of your user base is using glauth and imagine its probably fairly small but it would be a big quality of life improvement for me.

Cheers for the assistance

[prusaman]

@nebulon anything changed recently related to this? I patched glauth and authentication was working for the last few days. I rebooted the system to update OS packages and now auth is no longer working. Nothing else has changed. Just trying to limit variables and preserve the limited hair I have remaining.

Cheers

[girish]

@prusaman not really, we haven't made a release past 2-3 weeks.

[prusaman]

This post is deleted!

[NCKNE]

I am encountering the same error ("missing paged control") when connecting to a ldapjs server:

2025-02-25T07:37:57.542Z box:taskworker Starting task 10372. Logs are at /home/yellowtent/platformdata/logs/tasks/10372.log
2025-02-25T07:37:57.566Z box:taskworker Running task of type syncExternalLdap
2025-02-25T07:37:57.566Z box:tasks update 10372: {"percent":10,"message":"Starting ldap user sync"}
2025-02-25T07:37:59.860Z box:taskworker Task took 2.366 seconds
2025-02-25T07:37:59.860Z box:tasks setCompleted - 10372: {"result":null,"error":{"stack":"BoxError: missing paged control\n    at SearchPager.<anonymous> (/home/yellowtent/box/src/externalldap.js:162:48)\n    at SearchPager.emit (node:events:519:28)\n    at SearchPager.emit (/home/yellowtent/box/node_modules/ldapjs/lib/corked_emitter.js:44:33)\n    at SearchPager._onEnd (/home/yellowtent/box/node_modules/ldapjs/lib/client/search_pager.js:103:12)\n    at EventEmitter.emit (node:events:519:28)\n    at sendResult (/home/yellowtent/box/node_modules/ldapjs/lib/client/client.js:1194:22)\n    at messageCallback (/home/yellowtent/box/node_modules/ldapjs/lib/client/client.js:1222:16)\n    at Parser.onMessage (/home/yellowtent/box/node_modules/ldapjs/lib/client/client.js:888:14)\n    at Parser.emit (node:events:519:28)\n    at Parser.write (/home/yellowtent/box/node_modules/ldapjs/lib/messages/parser.js:107:8)","name":"BoxError","reason":"External Error","details":{},"message":"missing paged control","nestedError":{"stack":"PagedError: missing paged control\n    at SearchPager._onEnd (/home/yellowtent/box/node_modules/ldapjs/lib/client/search_pager.js:93:17)\n    at EventEmitter.emit (node:events:519:28)\n    at sendResult (/home/yellowtent/box/node_modules/ldapjs/lib/client/client.js:1194:22)\n    at messageCallback (/home/yellowtent/box/node_modules/ldapjs/lib/client/client.js:1222:16)\n    at Parser.onMessage (/home/yellowtent/box/node_modules/ldapjs/lib/client/client.js:888:14)\n    at Parser.emit (node:events:519:28)\n    at Parser.write (/home/yellowtent/box/node_modules/ldapjs/lib/messages/parser.js:107:8)\n    at end (/home/yellowtent/box/node_modules/ldapjs/lib/messages/parser.js:62:36)\n    at Parser.write (/home/yellowtent/box/node_modules/ldapjs/lib/messages/parser.js:108:10)\n    at Socket.onData (/home/yellowtent/box/node_modules/ldapjs/lib/client/client.js:875:22)","name":"PagedError","message":"missing paged control"}}}
2025-02-25T07:37:59.861Z box:tasks update 10372: {"percent":100,"result":null,"error":{"stack":"BoxError: missing paged control\n    at SearchPager.<anonymous> (/home/yellowtent/box/src/externalldap.js:162:48)\n    at SearchPager.emit (node:events:519:28)\n    at SearchPager.emit (/home/yellowtent/box/node_modules/ldapjs/lib/corked_emitter.js:44:33)\n    at SearchPager._onEnd (/home/yellowtent/box/node_modules/ldapjs/lib/client/search_pager.js:103:12)\n    at EventEmitter.emit (node:events:519:28)\n    at sendResult (/home/yellowtent/box/node_modules/ldapjs/lib/client/client.js:1194:22)\n    at messageCallback (/home/yellowtent/box/node_modules/ldapjs/lib/client/client.js:1222:16)\n    at Parser.onMessage (/home/yellowtent/box/node_modules/ldapjs/lib/client/client.js:888:14)\n    at Parser.emit (node:events:519:28)\n    at Parser.write (/home/yellowtent/box/node_modules/ldapjs/lib/messages/parser.js:107:8)","name":"BoxError","reason":"External Error","details":{},"message":"missing paged control","nestedError":{"stack":"PagedError: missing paged control\n    at SearchPager._onEnd (/home/yellowtent/box/node_modules/ldapjs/lib/client/search_pager.js:93:17)\n    at EventEmitter.emit (node:events:519:28)\n    at sendResult (/home/yellowtent/box/node_modules/ldapjs/lib/client/client.js:1194:22)\n    at messageCallback (/home/yellowtent/box/node_modules/ldapjs/lib/client/client.js:1222:16)\n    at Parser.onMessage (/home/yellowtent/box/node_modules/ldapjs/lib/client/client.js:888:14)\n    at Parser.emit (node:events:519:28)\n    at Parser.write (/home/yellowtent/box/node_modules/ldapjs/lib/messages/parser.js:107:8)\n    at end (/home/yellowtent/box/node_modules/ldapjs/lib/messages/parser.js:62:36)\n    at Parser.write (/home/yellowtent/box/node_modules/ldapjs/lib/messages/parser.js:108:10)\n    at Socket.onData (/home/yellowtent/box/node_modules/ldapjs/lib/client/client.js:875:22)","name":"PagedError","message":"missing paged control"}}}
BoxError: missing paged control
    at SearchPager.<anonymous> (/home/yellowtent/box/src/externalldap.js:162:48)
    at SearchPager.emit (node:events:519:28)
    at SearchPager.emit (/home/yellowtent/box/node_modules/ldapjs/lib/corked_emitter.js:44:33)
    at SearchPager._onEnd (/home/yellowtent/box/node_modules/ldapjs/lib/client/search_pager.js:103:12)
    at EventEmitter.emit (node:events:519:28)
    at sendResult (/home/yellowtent/box/node_modules/ldapjs/lib/client/client.js:1194:22)
    at messageCallback (/home/yellowtent/box/node_modules/ldapjs/lib/client/client.js:1222:16)
    at Parser.onMessage (/home/yellowtent/box/node_modules/ldapjs/lib/client/client.js:888:14)
    at Parser.emit (node:events:519:28)
    at Parser.write (/home/yellowtent/box/node_modules/ldapjs/lib/messages/parser.js:107:8)

The ldapjs server that is being queried logs the following in debug mode:

DEBUG: 2025-02-25T07:37:59.816Z:  %s: sending: %j 1.2.3.4:54938 { status: 0, matchedDN: '', diagnosticMessage: '', referrals: [] }
TRACE: 2025-02-25T07:37:59.883Z:  %s shutdown 1.2.3.4:54938
TRACE: 2025-02-25T07:37:59.884Z:  %s close; had_err=%j 1.2.3.4:54938 false

Could this be related to paging? Can paging be disabled in Cloudron to test if that is the cause?

[NCKNE]

Update: Changing all occurrences of

paged: true

to

paged: false

in

/home/yellowtent/box/src/externalldap.js

Makes LDAP Sync work. Maybe adding a GUI option for paging in the LDAP sync configuration settings would be a good idea?

[joseph]

@NCKNE maybe this can be auto-detected. Can you run ldapsearch -x -s base -b "" supportedControl (per chatgpt) . If it has 1.2.840.113556.1.4.319 it means it has paged control extension it seems

[joseph]

Also https://github.com/glauth/glauth/issues/272 says they don't support paged

[NCKNE]

Yes, although I am not using glauth for LDAP, the server does not support paging. There seem to be various configurations that do not support paging, so an option to disable it in the Cloudron LDAP sync config would be nice.

[joseph]

@NCKNE were you able to run that command? trying to see if we can fix the code to simply auto-detect this and disable paging automatically (instead of adding an option) . my understanding is that paging is optional to ldap servers.

[NCKNE]

@joseph said in glauth ldap backend:

@NCKNE were you able to run that command? trying to see if we can fix the code to simply auto-detect this and disable paging automatically (instead of adding an option) . my understanding is that paging is optional to ldap servers.

That's a great idea! I ran the command but got the following response:

root@ldap-wrapper-r90:~# ldapsearch -x -s base -b "" supportedControl -H ldap://localhost:13389
# extended LDIF
#
# LDAPv3
# base <> with scope baseObject
# filter: (objectclass=*)
# requesting: supportedControl 
#

# domain.de
dn: dc=domain,dc=de

# search result
search: 2
result: 0 Success

# numResponses: 2
# numEntries: 1

[girish]

@NCKNE added in https://git.cloudron.io/platform/box/-/commit/f78f6634fa29e0ca638f482c8e4f941c885e6301 . It hasn't run through our CI yet, but maybe that works for you already . You can patch server at /home/yellowtent/box/src/externalldap.js .