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#!/usr/bin/env python
import sys
import httplib
import urllib
import base64
import json
import optparse
import getpass
import logging
from pprint import pprint
#from BeautifulSoup import BeautifulSoup


BASE_URL = "https://login.linaro.org:8443/crowd/rest/usermanagement/1"
AUTH = (None, None)

log = logging.getLogger()


class CrowdRequestError(Exception):
    pass


def strip_html(html):
    return html
    html = BeautifulSoup(html, convertEntities=BeautifulSoup.HTML_ENTITIES)
    if not html.body:
        return html
    m = ' '.join(html.body.findAll(text=True))
    return m


def rest(uri, params):
    c = httplib.HTTPSConnection("login.linaro.org", 8443)
    auth = base64.encodestring('%s:%s' % AUTH)
    headers = {"Authorization": "Basic " + auth}

    url = "/crowd/rest/usermanagement/1" + uri + "?" + urllib.urlencode(params)
    log.debug("REST request: %s", url)
    c.request("GET", url, headers=headers)
    resp = c.getresponse()
    if resp.status != 200:
        data = resp.read()
        log.error("Non-successful response code %d from Crowd: %s", resp.status, strip_html(data))
        raise CrowdRequestError(resp, data)
    data = json.load(resp)
    return data


if __name__ == "__main__":
    optparser = optparse.OptionParser(usage="%prog users|groups|user|alises|group|usergroups|ismember|groupusers|groupgroups|members")
    optparser.add_option("-u", "--user", default="rest-test", help="Crowd username")
    optparser.add_option("-p", "--passwd", help="Crowd password")
    optparser.add_option("-P", "--ask-passwd", action="store_true", help="Ask Crowd password")
    optparser.add_option("-n", "--nested", action="store_true", help="Process nested groups")
    optparser.add_option("-r", "--raw", action="store_true", help="Show raw JSON response")
    optparser.add_option("-d", "--debug", action="store_true", help="Debug logging")
    options, args = optparser.parse_args(sys.argv[1:])
    if len(args) < 1:
        optparser.error("Wrong number of arguments")

    logging.basicConfig(level=(logging.DEBUG if options.debug else logging.INFO))

    if options.ask_passwd:
        options.passwd = getpass.getpass("Crowd password: ")

    AUTH = (options.user, options.passwd)

    if args[0] == "user":
        pprint(rest("/user.json", {"username": args[1], "expand": "attributes"}))

    elif args[0] == "aliases":
        pprint(rest("/aliases.json", {"username": args[1]}))

    elif args[0] == "group":
        pprint(rest("/group.json", {"groupname": args[1], "expand": "attributes"}))

    elif args[0] in ["users", "groups"]:
        entity = args[0]
        params = {"entity-type": entity[:-1]}
        if len(args) > 1:
            params["restriction"] = args[1]
        data = rest("/search.json", params)
        if options.raw:
            pprint(data)
        else:
            names = sorted([x["name"] for x in data[entity]])
            for n in names:
                print n

    elif args[0] == "usergroups":
        url = "/user/group/nested.json" if options.nested else "/user/group/direct.json"
        data = rest(url, {"username": args[1]})
        if options.raw:
            pprint(data)
        else:
            names = [x["name"] for x in data["groups"]]
            names.sort()
            for n in names:
                print n

    elif args[0] == "groupusers":
        url = "/group/user/nested.json" if options.nested else "/group/user/direct.json"
        data = rest(url, {"groupname": args[1]})
        if options.raw:
            pprint(data)
        else:
            names = [x["name"] for x in data["users"]]
            names.sort()
            for n in names:
                print n

    elif args[0] == "groupgroups":
        url = "/group/child-group/nested.json" if options.nested else "/group/child-group/direct.json"
        data = rest(url, {"groupname": args[1]})
        if options.raw:
            pprint(data)
        else:
            names = [x["name"] for x in data["groups"]]
            names.sort()
            for n in names:
                print n

    elif args[0] == "members":
        def print_names(header, list):
            if list:
                print header
                for n in list:
                    print "\t" + n
        data = rest("/group/user/direct.json", {"groupname": args[1]})
        names = sorted([x["name"] for x in data["users"]])
        print_names("Users:", names)
        data = rest("/group/child-group/direct.json", {"groupname": args[1]})
        names = sorted([x["name"] for x in data["groups"]])
        print_names("Groups:", names)

    elif args[0] == "ismember":
        url = "/user/group/nested.json" if options.nested else "/user/group/direct.json"
        try:
            data = rest(url, {"username": args[1], "groupname": args[2]})
            assert data["name"] == args[2]
            print "yes"
        except CrowdRequestError, e:
            print e.args[1]
            print "no"