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https://github.com/spider-gazelle/crystal-ldap
a Crystal lang LDAP client
https://github.com/spider-gazelle/crystal-ldap
Last synced: about 2 months ago
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a Crystal lang LDAP client
- Host: GitHub
- URL: https://github.com/spider-gazelle/crystal-ldap
- Owner: spider-gazelle
- License: mit
- Created: 2020-05-07T02:22:21.000Z (about 4 years ago)
- Default Branch: master
- Last Pushed: 2021-05-25T23:30:26.000Z (about 3 years ago)
- Last Synced: 2024-02-01T15:51:40.562Z (5 months ago)
- Language: Crystal
- Size: 28.3 KB
- Stars: 16
- Watchers: 5
- Forks: 1
- Open Issues: 3
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Lists
- awesome-crystal - crystal-ldap - LDAP client (Database Drivers/Clients)
README
# LDAP Support for Crystal Lang
[](https://github.com/spider-gazelle/crystal-ldap/actions/workflows/ci.yml)
## Installation
Add the dependency to your `shard.yml`:
```yaml
dependencies:
ldap:
github: spider-gazelle/crystal-ldap
```
## Usage
### Connecting and Binding
Passing a TLS context will upgrade the connection using [start tls](https://en.wikipedia.org/wiki/Lightweight_Directory_Access_Protocol#StartTLS)
```crystal
require "ldap"
host = "ldap.forumsys.com"
port = 389
user = "cn=read-only-admin,dc=example,dc=com"
pass = "password"
# Standard LDAP port with unencrypted socket
socket = TCPSocket.new(host, port)
# Providing a context will upgrade to encrypted comms using start tls (official method)
tls = OpenSSL::SSL::Context::Client.new
tls.verify_mode = OpenSSL::SSL::VerifyMode::NONE
# Bind to the server
client = LDAP::Client.new(socket, tls)
client.authenticate(user, pass)
# Can now perform LDAP operations
```
To use the non-standard `LDAPS` (LDAP Secure, commonly known as LDAP over SSL) protocol then pass in a `OpenSSL::SSL::Socket::Client` directly: `LDAP::Client.new(tls_socket)`
```crystal
# LDAPS method
socket = TCPSocket.new(host, port)
tls = OpenSSL::SSL::Context::Client.new
tls.verify_mode = OpenSSL::SSL::VerifyMode::NONE
socket = OpenSSL::SSL::Socket::Client.new(socket, context: tls, sync_close: true, hostname: host)
# Bind to the server
client = LDAP::Client.new(socket)
client.authenticate(user, pass)
# Can now perform LDAP operations
```
### Querying
You can perform search requests
```crystal
# You can use LDAP string filters directly
client.search(base: "dc=example,dc=com", filter: "(|(uid=einstein)(uid=training))")
# There are options to select particular attributes and limit response sizes
filter = LDAP::Request::Filter.equal("objectClass", "person")
client.search(
base: "dc=example,dc=com",
filter: filter,
size: 6,
attributes: ["hasSubordinates", "objectClass"]
)
# Filters can be combined using standard operations
filter = (
LDAP::Request::Filter.equal("objectClass", "person") &
LDAP::Request::Filter.equal("sn", "training")) |
LDAP::Request::FilterParser.parse("(uid=einstein)"
)
client.search(base: "dc=example,dc=com", filter: filter)
```
Search responses are `Array(Hash(String, Array(String)))`
```crystal
[
{
"dn" => ["uid=einstein,dc=example,dc=com"],
"objectClass" => ["inetOrgPerson", "organizationalPerson", "person", "top"],
"cn" => ["Albert Einstein"],
"sn" => ["Einstein"],
"uid" => ["einstein"],
"mail" => ["[email protected]"],
"telephoneNumber" => ["314-159-2653"]
},
{
"dn" => ["uid=training,dc=example,dc=com"],
"uid" => ["training"],
"objectClass" => ["inetOrgPerson", "organizationalPerson", "person", "top"],
"cn" => ["FS Training"],
"sn" => ["training"],
"mail" => ["[email protected]"],
"telephoneNumber" => ["888-111-2222"]
}
]
```