glapi/README.md

# glapi

Go Ldap API is an HTTP API to an LDAP backend.  
Only supporting read at the moment, maybe one day it will write, and break LDAP backends with ease and joy!

## Usage  
Start glapi with parameters on command line:
```
glapi -ldap-host ldap://ldap.example.org -ldap-base-dn dc=example,dc=org -ldap-user cn=yo,dc=example,dc=org -ldap-pass 'here_is_the_password'
```

or point it to a configuration file :
```
glapi -config glapi.env
```

## Configuration file  
``̀`
LISTEN="127.0.0.1:8080"
LDAP_HOST="ldap://ldap.example.org"
LDAP_BASE_DN="dc=example,dc=org"
LDAP_USER="cn=yo,dc=example,dc=org"
LDAP_PASS='here_is_the_password'
DEBUG=false
```

## Querying API  
Search LDAP entries through the whole subtree, specifying organizationalUnit, commnName, objectClass, attribute to retrieve.
Each one of these parameters can be replaced by "ALL" to act like a wildcard.
``̀`
% curl -u admin:admin http://127.0.0.1:8080/ou=domains/yo/person | jq      
[
  {
    "DN": "cn=yo,dc=example.org,ou=domains,dc=example,dc=org",
    "Attributes": [
      {
        "Name": "sn",
        "Values": [
          "yo"
        ],
        "ByteValues": [
          "eW8="
        ]
      },
      {
        "Name": "cn",
        "Values": [
          "yo"
        ],
        "ByteValues": [
          "eW8="
        ]
      },
      {
        "Name": "objectClass",
        "Values": [
          "inetOrgPerson",
          "organizationalPerson",
          "person",
          "top",
          "inetLocalMailRecipient"
        ],
        "ByteValues": [
          "aW5ldE9yZ1BlcnNvbg==",
          "b3JnYW5pemF0aW9uYWxQZXJzb24=",
          "cGVyc29u",
          "dG9w",
          "aW5ldExvY2FsTWFpbFJlY2lwaWVudA=="
        ]
      },
      {
        "Name": "mail",
        "Values": [
          "yo@example.org"
        ],
        "ByteValues": [
          "eW9AcGxvcGl0by50aw=="
        ]
      },
      {
        "Name": "mailLocalAddress",
        "Values": [
          "root@example.org",
          "postmaster@example.org",
        ],
        "ByteValues": [
          "cm9vdEBleGFtcGxlLm9yZw==",
          "cG9zdG1hc3RlckBleGFtcGxlLm9yZw==",
        ]
      },
      {
        "Name": "uid",
        "Values": [
          "yo"
        ],
        "ByteValues": [
          "eW8="
        ]
      }
    ]
  }
]
```

Using wildcards everywhere and ldif format, you can get a dump of ldap:
```
% curl -u admin:admin "http://127.0.0.1:8080/ALL/ALL/ALL?format=ldif"
dn: dc=example,dc=org
objectClass: organization
objectClass: top
objectClass: dcObject
dc: example
o: example.org

dn: cn=admin,dc=example,dc=org
objectClass: organizationalRole
objectClass: top
objectClass: simpleSecurityObject
cn: admin

dn: cn=yo,dc=example,dc=org
objectClass: organizationalRole
objectClass: top
objectClass: simpleSecurityObject
cn: yo
userPassword: {SSHA}edited

[...]
```

Get operational attributes with "*,+" in attribute :
``̀`
% curl -u admin:admin "http://127.0.0.1:8080/ALL/ALL/ALL/*,+?format=ldif"   
dn: dc=example,dc=org
objectClass: organization
objectClass: top
objectClass: dcObject
dc: example
o: example.org
structuralObjectClass: organization
entryUUID: af93fd38-3139-103a-8d41-05c00494facf
creatorsName: cn=admin,dc=example,dc=org
createTimestamp: 20200523120715Z
entryCSN: 20200523120715.282611Z#000000#000#000000
modifiersName: cn=admin,dc=example,dc=org
modifyTimestamp: 20200523120715Z
entryDN: dc=example,dc=org
subschemaSubentry: cn=Subschema
hasSubordinates: TRUE

dn: cn=admin,dc=example,dc=org
objectClass: organizationalRole
objectClass: top
objectClass: simpleSecurityObject
cn: admin
structuralObjectClass: organizationalRole
entryUUID: af9a1556-3139-103a-8d42-05c00494facf
creatorsName: cn=admin,dc=example,dc=org
createTimestamp: 20200523120715Z
entryCSN: 20200523120715.322559Z#000000#000#000000
modifiersName: cn=admin,dc=example,dc=org
modifyTimestamp: 20200523120715Z
entryDN: cn=admin,dc=example,dc=org
subschemaSubentry: cn=Subschema
hasSubordinates: FALSE

[...]
`̀``

### Output format  
Default output is in json. The following formats are supported, to be specified as a "format" query parameter:  
- json (default)  
- text (ini style)  
- ldif  
- textvalue (only attribute values are returned)  
- textvalue-nodn ((only attribute values, no dn added, no linefeed between entries. To be used by Rspamd multimap module)  

```
% curl -u admin:admin "http://127.0.0.1:8080/ou=domains/yo/person?format=text"
dn=cn=yo,dc=example.org,ou=domains,dc=example,dc=org
sn=yo
cn=yo
objectClass=inetOrgPerson
objectClass=organizationalPerson
objectClass=person
objectClass=top
objectClass=inetLocalMailRecipient
mail=yo@example.org
mailLocalAddress=root@example.org
mailLocalAddress=postmaster@example.org
uid=yo

% curl -u admin:admin "http://127.0.0.1:8080/ou=domains/yo/person?format=ldif"
dn: cn=yo,dc=example.org,ou=domains,dc=example,dc=org
sn: yo
cn: yo
objectClass: inetOrgPerson
objectClass: organizationalPerson
objectClass: person
objectClass: top
objectClass: inetLocalMailRecipient
mail: yo@example.org
mailLocalAddress: root@example.org
mailLocalAddress=postmaster@example.org
uid: yo

```

### Select attributes to get  
You can specify attributes to get by adding them in 4th position :  
̀```
% curl -u admin:admin "http://127.0.0.1:8080/ou=domains/yo/person/mail?format=textvalue"
cn=yo,dc=example.org,ou=domains,dc=example,dc=org
yo@example.org

% curl -u admin:admin "http://127.0.0.1:8080/ou=domains/yo/person/mail?format=textvalue-nodn"
yo@example.org

```