Script em Python para gerar um ~/.m2/settings.xml com token de acesso a repositório no GitHub.

gistfile1.py

#!/usr/bin/env python
import httplib, getpass, base64, json, datetime, sys, xml.etree.ElementTree as ET, os.path as path, os

KEY = 'your-private-repo'
NS = {'n':'http://maven.apache.org/SETTINGS/1.0.0'}

def make_auth(username, password):
    return base64.b64encode('{}:{}'.format(username, password))

def make_token(repokey, username, password):
    print 'Generating new token for', username
    auth = make_auth(username, password)

    conn = httplib.HTTPSConnection('api.github.com', 443)

    body = json.dumps({'note':'{} {}'.format(repokey, str(datetime.datetime.now())), 'scopes': ['repo']})
    headers = {'Authorization': 'Basic {}'.format(auth)}
    conn.request('POST', '/authorizations', body, headers)
    resp = conn.getresponse()

    if resp.status/100 != 2:
        print resp.status
        print resp.reason
        print resp.msg
        print resp.read()
        return None
    else:
        respjson = json.loads(resp.read())
        print 'Created token', respjson['note']
        return respjson['token']
    
def add_token(filename, repokey, username, password):
    auth = make_auth(username, password)
    if os.path.exists(filename):
        tree = ET.parse(filename)
    else:
        print filename, 'does not exist. Creating new.'
        tree = ET.ElementTree(ET.fromstring(
        """
        <settings xmlns="http://maven.apache.org/SETTINGS/1.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0                           http://maven.apache.org/xsd/settings-1.0.0.xsd">
          <servers>
          </servers>
        </settings>
        """))
    root = tree.getroot()
    
    xml = ET.fromstring(
    """
    <server xmlns="http://maven.apache.org/SETTINGS/1.0.0">
      <id>{}</id>
      <configuration>
        <httpHeaders>
          <property>
            <name>Authorization</name>
            <value>Basic {}</value>
          </property>
        </httpHeaders>
      </configuration>
    </server>
    """.format(repokey, auth))

    servers = root.find('n:servers', namespaces=NS)
    for server in servers.findall('n:server[n:id="{}"]'.format(repokey), namespaces=NS):
        print 'Removing existing {} config'.format(repokey)
        servers.remove(server)
    servers.append(xml)

    backup = filename + '.bkp'
    
    print 'Backing up', backup

    if os.path.exists(backup):
        os.remove(backup)
    if os.path.exists(filename):
        os.rename(filename, backup)
    
    print 'Writing', filename
    tree.write(filename, default_namespace=NS['n'])
    
def def_input(prompt, default):
    return raw_input(prompt.format(default)) or default
    
username = raw_input('Github username: ')
password = getpass.getpass('Password: ')
filename = def_input('M2 settings [{}]: ', path.join(path.expanduser("~"), '.m2/settings.xml'))
repokey = def_input('Maven repository key [{}]: ', KEY)
generate = raw_input('Generate token with supplied password [Y/n]: ')

if generate.lower() != "n":
    username = make_token(repokey, username, password)
    password = ''
    username or sys.exit('No token was created')

print 'Writing authorization...'
add_token(filename, repokey, username, password)

print 'DONE.'