from cStringIO import StringIO
import ConfigParser
import boto.exception
import boto.s3.connection
import bunch
import itertools
import nose
import operator
import os
import random
import string
import time
import socket

from nose.tools import eq_ as eq
from nose.plugins.attrib import attr

from utils import assert_raises
import AnonymousAuth

NONEXISTENT_EMAIL = 'doesnotexist@dreamhost.com.invalid'

s3 = bunch.Bunch()
config = bunch.Bunch()

# this will be assigned by setup()
prefix = None


def choose_bucket_prefix(template, max_len=30):
    """
    Choose a prefix for our test buckets, so they're easy to identify.

    Use template and feed it more and more random filler, until it's
    as long as possible but still below max_len.
    """
    rand = ''.join(
        random.choice(string.ascii_lowercase + string.digits)
        for c in range(255)
        )

    while rand:
        s = template.format(random=rand)
        if len(s) <= max_len:
            return s
        rand = rand[:-1]

    raise RuntimeError(
        'Bucket prefix template is impossible to fulfill: {template!r}'.format(
            template=template,
            ),
        )


def nuke_prefixed_buckets(prefix):
    for name, conn in s3.items():
        print 'Cleaning buckets from connection {name} prefix {prefix!r}.'.format(
            name=name,
            prefix=prefix,
            )
        for bucket in conn.get_all_buckets():
            if bucket.name.startswith(prefix):
                print 'Cleaning bucket {bucket}'.format(bucket=bucket)
                try:
                    bucket.set_canned_acl('private')
                    for key in bucket.list():
                        print 'Cleaning bucket {bucket} key {key}'.format(
                            bucket=bucket,
                            key=key,
                            )
                        key.set_canned_acl('private')
                        key.delete()
                    bucket.delete()
                except boto.exception.S3ResponseError as e:
                    if e.error_code != 'AccessDenied':
                        print 'GOT UNWANTED ERROR', e.error_code
                        raise
                    # seems like we're not the owner of the bucket; ignore
                    pass

    print 'Done with cleanup of test buckets.'


def setup():

    cfg = ConfigParser.RawConfigParser()
    try:
        path = os.environ['S3TEST_CONF']
    except KeyError:
        raise RuntimeError(
            'To run tests, point environment '
            + 'variable S3TEST_CONF to a config file.',
            )
    with file(path) as f:
        cfg.readfp(f)

    global prefix
    try:
        template = cfg.get('fixtures', 'bucket prefix')
    except (ConfigParser.NoSectionError, ConfigParser.NoOptionError):
        template = 'test-{random}-'
    prefix = choose_bucket_prefix(template=template)

    s3.clear()
    config.clear()
    for section in cfg.sections():
        try:
            (type_, name) = section.split(None, 1)
        except ValueError:
            continue
        if type_ != 's3':
            continue
        try:
            port = cfg.getint(section, 'port')
        except ConfigParser.NoOptionError:
            port = None

        config[name] = bunch.Bunch()
        for var in [
            'user_id',
            'display_name',
            'email',
            ]:
            try:
                config[name][var] = cfg.get(section, var)
            except ConfigParser.NoOptionError:
                pass
        conn = boto.s3.connection.S3Connection(
            aws_access_key_id=cfg.get(section, 'access_key'),
            aws_secret_access_key=cfg.get(section, 'secret_key'),
            is_secure=cfg.getboolean(section, 'is_secure'),
            port=port,
            host=cfg.get(section, 'host'),
            # TODO support & test all variations
            calling_format=boto.s3.connection.OrdinaryCallingFormat(),
            )
        s3[name] = conn

    # WARNING! we actively delete all buckets we see with the prefix
    # we've chosen! Choose your prefix with care, and don't reuse
    # credentials!

    # We also assume nobody else is going to use buckets with that
    # prefix. This is racy but given enough randomness, should not
    # really fail.
    nuke_prefixed_buckets(prefix=prefix)


def teardown():
    # remove our buckets here also, to avoid littering
    nuke_prefixed_buckets(prefix=prefix)


bucket_counter = itertools.count(1)


def get_new_bucket_name():
    """
    Get a bucket name that probably does not exist.

    We make every attempt to use a unique random prefix, so if a
    bucket by this name happens to exist, it's ok if tests give
    false negatives.
    """
    name = '{prefix}{num}'.format(
        prefix=prefix,
        num=next(bucket_counter),
        )
    return name


def get_new_bucket(connection=None):
    """
    Get a bucket that exists and is empty.

    Always recreates a bucket from scratch. This is useful to also
    reset ACLs and such.
    """
    if connection is None:
        connection = s3.main
    name = get_new_bucket_name()
    # the only way for this to fail with a pre-existing bucket is if
    # someone raced us between setup nuke_prefixed_buckets and here;
    # ignore that as astronomically unlikely
    bucket = connection.create_bucket(name)
    return bucket


def check_access_denied(fn, *args, **kwargs):
    e = assert_raises(boto.exception.S3ResponseError, fn, *args, **kwargs)
    eq(e.status, 403)
    eq(e.reason, 'Forbidden')
    eq(e.error_code, 'AccessDenied')


def check_grants(got, want):
    """
    Check that grants list in got matches the dictionaries in want,
    in any order.
    """
    eq(len(got), len(want))
    got = sorted(got, key=operator.attrgetter('id'))
    want = sorted(want, key=operator.itemgetter('id'))
    for g,w in zip(got, want):
        w = dict(w)
        eq(g.permission, w.pop('permission'))
        eq(g.id, w.pop('id'))
        eq(g.display_name, w.pop('display_name'))
        eq(g.uri, w.pop('uri'))
        eq(g.email_address, w.pop('email_address'))
        eq(g.type, w.pop('type'))
        eq(w, {})

def test_bucket_list_empty():
    bucket = get_new_bucket()
    l = bucket.list()
    l = list(l)
    eq(l, [])

def test_bucket_notexist():
    name = '{prefix}foo'.format(prefix=prefix)
    print 'Trying bucket {name!r}'.format(name=name)
    e = assert_raises(boto.exception.S3ResponseError, s3.main.get_bucket, name)
    eq(e.status, 404)
    eq(e.reason, 'Not Found')
    eq(e.error_code, 'NoSuchBucket')


def test_bucket_delete_notexist():
    name = '{prefix}foo'.format(prefix=prefix)
    print 'Trying bucket {name!r}'.format(name=name)
    e = assert_raises(boto.exception.S3ResponseError, s3.main.delete_bucket, name)
    eq(e.status, 404)
    eq(e.reason, 'Not Found')
    eq(e.error_code, 'NoSuchBucket')


def test_object_write_to_nonexist_bucket():
    name = '{prefix}foo'.format(prefix=prefix)
    print 'Trying bucket {name!r}'.format(name=name)
    bucket = s3.main.get_bucket(name, validate=False)
    key = bucket.new_key('foo123bar')
    e = assert_raises(boto.exception.S3ResponseError, key.set_contents_from_string, 'foo')
    eq(e.status, 404)
    eq(e.reason, 'Not Found')
    eq(e.error_code, 'NoSuchBucket')


def test_bucket_create_delete():
    name = '{prefix}foo'.format(prefix=prefix)
    print 'Trying bucket {name!r}'.format(name=name)
    bucket = s3.main.create_bucket(name)
    # make sure it's actually there
    s3.main.get_bucket(bucket.name)
    bucket.delete()
    # make sure it's gone
    e = assert_raises(boto.exception.S3ResponseError, bucket.delete)
    eq(e.status, 404)
    eq(e.reason, 'Not Found')
    eq(e.error_code, 'NoSuchBucket')


def test_object_read_notexist():
    bucket = get_new_bucket()
    key = bucket.new_key('foobar')
    e = assert_raises(boto.exception.S3ResponseError, key.get_contents_as_string)
    eq(e.status, 404)
    eq(e.reason, 'Not Found')
    eq(e.error_code, 'NoSuchKey')


# This should test the basic lifecycle of the key
def test_object_write_read_update_read_delete():
    bucket = get_new_bucket()
    # Write
    key = bucket.new_key('foo')
    key.set_contents_from_string('bar')
    # Read
    got = key.get_contents_as_string()
    eq(got, 'bar')
    # Update
    key.set_contents_from_string('soup')
    # Read
    got = key.get_contents_as_string()
    eq(got, 'soup')
    # Delete
    key.delete()


def test_object_set_get_metadata():
    bucket = get_new_bucket()
    key = boto.s3.key.Key(bucket)
    key.key = ('foo')
    key.set_metadata('meta1', 'mymeta')
    key.set_contents_from_string('bar')
    key2 = bucket.get_key('foo')
    got = key2.get_metadata('meta1')
    eq(got, 'mymeta')


# UTF-8 encoded data should pass straight through
def test_object_set_get_unicode_metadata():
    bucket = get_new_bucket()
    key = boto.s3.key.Key(bucket)
    key.key = (u'foo')
    key.set_metadata('meta1', u"Hello World\xe9")
    key.set_contents_from_string('bar')
    key2 = bucket.get_key('foo')
    got = key2.get_metadata('meta1')
    eq(got, u"Hello World\xe9")


def test_object_set_get_non_utf8_metadata():
    bucket = get_new_bucket()
    key = boto.s3.key.Key(bucket)
    key.key = ('foo')
    key.set_metadata('meta1', '\x04mymeta')
    key.set_contents_from_string('bar')
    key2 = bucket.get_key('foo')
    got = key2.get_metadata('meta1')
    eq(got, '=?UTF-8?Q?=04mymeta?=')


def test_object_write_file():
    # boto Key.set_contents_from_file / .send_file uses Expect:
    # 100-Continue, so this test exercises that (though a bit too
    # subtly)
    bucket = get_new_bucket()
    key = bucket.new_key('foo')
    data = StringIO('bar')
    key.set_contents_from_file(fp=data)
    got = key.get_contents_as_string()
    eq(got, 'bar')


def check_bad_bucket_name(name):
    e = assert_raises(boto.exception.S3ResponseError, s3.main.create_bucket, name)
    eq(e.status, 400)
    eq(e.reason, 'Bad Request')
    eq(e.error_code, 'InvalidBucketName')


# AWS does not enforce all documented bucket restrictions.
# http://docs.amazonwebservices.com/AmazonS3/2006-03-01/dev/index.html?BucketRestrictions.html
@attr('fails_on_aws')
def test_bucket_create_naming_bad_starts_nonalpha():
    check_bad_bucket_name('_alphasoup')


def test_bucket_create_naming_bad_short_empty():
    # bucket creates where name is empty look like PUTs to the parent
    # resource (with slash), hence their error response is different
    e = assert_raises(boto.exception.S3ResponseError, s3.main.create_bucket, '')
    eq(e.status, 405)
    eq(e.reason, 'Method Not Allowed')
    eq(e.error_code, 'MethodNotAllowed')


def test_bucket_create_naming_bad_short_one():
    check_bad_bucket_name('a')


def test_bucket_create_naming_bad_short_two():
    check_bad_bucket_name('aa')

def test_bucket_create_naming_bad_long():
    check_bad_bucket_name(256*'a')
    check_bad_bucket_name(280*'a')
    check_bad_bucket_name(3000*'a')


def check_good_bucket_name(name, _prefix=None):
    # prefixing to make then unique

    # tests using this with the default prefix must *not* rely on
    # being able to set the initial character, or exceed the max len

    # tests using this with a custom prefix are responsible for doing
    # their own setup/teardown nukes, with their custom prefix; this
    # should be very rare
    if _prefix is None:
        _prefix = prefix
    s3.main.create_bucket('{prefix}{name}'.format(
            prefix=_prefix,
            name=name,
            ))


def _test_bucket_create_naming_good_long(length):
    assert len(prefix) < 255
    num = length - len(prefix)
    s3.main.create_bucket('{prefix}{name}'.format(
            prefix=prefix,
            name=num*'a',
            ))


def test_bucket_create_naming_good_long_250():
    _test_bucket_create_naming_good_long(250)


def test_bucket_create_naming_good_long_251():
    _test_bucket_create_naming_good_long(251)


def test_bucket_create_naming_good_long_252():
    _test_bucket_create_naming_good_long(252)


def test_bucket_create_naming_good_long_253():
    _test_bucket_create_naming_good_long(253)


def test_bucket_create_naming_good_long_254():
    _test_bucket_create_naming_good_long(254)


def test_bucket_create_naming_good_long_255():
    _test_bucket_create_naming_good_long(255)

def test_bucket_list_long_name():
    length = 251
    num = length - len(prefix)
    bucket = s3.main.create_bucket('{prefix}{name}'.format(
            prefix=prefix,
            name=num*'a',
            ))
    got = bucket.list()
    got = list(got)
    eq(got, [])


# AWS does not enforce all documented bucket restrictions.
# http://docs.amazonwebservices.com/AmazonS3/2006-03-01/dev/index.html?BucketRestrictions.html
@attr('fails_on_aws')
def test_bucket_create_naming_bad_ip():
    check_bad_bucket_name('192.168.5.123')


def test_bucket_create_naming_bad_punctuation():
    # characters other than [a-zA-Z0-9._-]
    check_bad_bucket_name('alpha!soup')


# test_bucket_create_naming_dns_* are valid but not recommended

def test_bucket_create_naming_dns_underscore():
    check_good_bucket_name('foo_bar')


def test_bucket_create_naming_dns_long():
    assert len(prefix) < 50
    num = 100 - len(prefix)
    check_good_bucket_name(num * 'a')


def test_bucket_create_naming_dns_dash_at_end():
    check_good_bucket_name('foo-')


def test_bucket_create_naming_dns_dot_dot():
    check_good_bucket_name('foo..bar')


def test_bucket_create_naming_dns_dot_dash():
    check_good_bucket_name('foo.-bar')


def test_bucket_create_naming_dns_dash_dot():
    check_good_bucket_name('foo-.bar')


def test_bucket_create_exists():
    bucket = get_new_bucket()
    # REST idempotency means this should be a nop
    s3.main.create_bucket(bucket.name)


def test_bucket_create_exists_nonowner():
    # Names are shared across a global namespace. As such, no two
    # users can create a bucket with that same name.
    bucket = get_new_bucket()
    e = assert_raises(boto.exception.S3CreateError, s3.alt.create_bucket, bucket.name)
    eq(e.status, 409)
    eq(e.reason, 'Conflict')
    eq(e.error_code, 'BucketAlreadyExists')


def test_bucket_delete_nonowner():
    bucket = get_new_bucket()
    check_access_denied(s3.alt.delete_bucket, bucket.name)


def test_bucket_acl_default():
    bucket = get_new_bucket()
    policy = bucket.get_acl()
    print repr(policy)
    eq(policy.owner.type, None)
    eq(policy.owner.id, config.main.user_id)
    eq(policy.owner.display_name, config.main.display_name)
    check_grants(
        policy.acl.grants,
        [
            dict(
                permission='FULL_CONTROL',
                id=policy.owner.id,
                display_name=policy.owner.display_name,
                uri=None,
                email_address=None,
                type='CanonicalUser',
                ),
            ],
        )


def test_bucket_acl_canned():
    bucket = get_new_bucket()
    # Since it defaults to private, set it public-read first
    bucket.set_acl('public-read')
    policy = bucket.get_acl()
    print repr(policy)
    check_grants(
        policy.acl.grants,
        [
            dict(
                permission='FULL_CONTROL',
                id=policy.owner.id,
                display_name=policy.owner.display_name,
                uri=None,
                email_address=None,
                type='CanonicalUser',
                ),
            dict(
                permission='READ',
                id=None,
                display_name=None,
                uri='http://acs.amazonaws.com/groups/global/AllUsers',
                email_address=None,
                type='Group',
                ),
            ],
        )

    # Then back to private.
    bucket.set_acl('private')
    policy = bucket.get_acl()
    print repr(policy)
    check_grants(
        policy.acl.grants,
        [
            dict(
                permission='FULL_CONTROL',
                id=policy.owner.id,
                display_name=policy.owner.display_name,
                uri=None,
                email_address=None,
                type='CanonicalUser',
                ),
            ],
        )


def test_bucket_acl_canned_private_to_private():
    bucket = get_new_bucket()
    bucket.set_acl('private')


def test_bucket_acl_grant_userid():
    bucket = get_new_bucket()
    # add alt user
    policy = bucket.get_acl()
    policy.acl.add_user_grant('FULL_CONTROL', config.alt.user_id)
    bucket.set_acl(policy)
    policy = bucket.get_acl()
    check_grants(
        policy.acl.grants,
        [
            dict(
                permission='FULL_CONTROL',
                id=policy.owner.id,
                display_name=policy.owner.display_name,
                uri=None,
                email_address=None,
                type='CanonicalUser',
                ),
            dict(
                permission='FULL_CONTROL',
                id=config.alt.user_id,
                display_name=config.alt.display_name,
                uri=None,
                email_address=None,
                type='CanonicalUser',
                ),
            ],
        )

    # alt user can write
    bucket2 = s3.alt.get_bucket(bucket.name)
    key = bucket2.new_key('foo')
    key.set_contents_from_string('bar')


# This test will fail on DH Objects. DHO allows multiple users with one account, which
# would violate the uniqueness requirement of a user's email. As such, DHO users are
# created without an email.
@attr('fails_on_dho')
def test_bucket_acl_grant_email():
    bucket = get_new_bucket()
    # add alt user
    policy = bucket.get_acl()
    policy.acl.add_email_grant('FULL_CONTROL', config.alt.email)
    bucket.set_acl(policy)
    policy = bucket.get_acl()
    check_grants(
        policy.acl.grants,
        [
            dict(
                permission='FULL_CONTROL',
                id=policy.owner.id,
                display_name=policy.owner.display_name,
                uri=None,
                email_address=None,
                type='CanonicalUser',
                ),
            dict(
                permission='FULL_CONTROL',
                id=config.alt.user_id,
                display_name=config.alt.display_name,
                uri=None,
                email_address=None,
                type='CanonicalUser',
                ),
            ],
        )

    # alt user can write
    bucket2 = s3.alt.get_bucket(bucket.name)
    key = bucket2.new_key('foo')
    key.set_contents_from_string('bar')


def test_bucket_acl_grant_email_notexist():
    # behavior not documented by amazon
    bucket = get_new_bucket()
    policy = bucket.get_acl()
    policy.acl.add_email_grant('FULL_CONTROL', NONEXISTENT_EMAIL)
    e = assert_raises(boto.exception.S3ResponseError, bucket.set_acl, policy)
    eq(e.status, 400)
    eq(e.reason, 'Bad Request')
    eq(e.error_code, 'UnresolvableGrantByEmailAddress')


def test_bucket_acl_revoke_all():
    # revoke all access, including the owner's access
    bucket = get_new_bucket()
    policy = bucket.get_acl()
    policy.acl.grants = []
    bucket.set_acl(policy)
    policy = bucket.get_acl()
    eq(len(policy.acl.grants), 0)


# TODO rgw log_bucket.set_as_logging_target() gives 403 Forbidden
# http://tracker.newdream.net/issues/984
@attr('fails_on_rgw')
def test_logging_toggle():
    bucket = get_new_bucket()
    log_bucket = s3.main.create_bucket(bucket.name + '-log')
    log_bucket.set_as_logging_target()
    bucket.enable_logging(target_bucket=log_bucket, target_prefix=bucket.name)
    bucket.disable_logging()


def _setup_access(bucket_acl, object_acl):
    """
    Simple test fixture: create a bucket with given ACL, with objects:

    - a: given ACL
    - b: default ACL
    """
    obj = bunch.Bunch()
    bucket = get_new_bucket()
    bucket.set_acl(bucket_acl)
    obj.a = bucket.new_key('foo')
    obj.a.set_contents_from_string('foocontent')
    obj.a.set_acl(object_acl)
    obj.b = bucket.new_key('bar')
    obj.b.set_contents_from_string('barcontent')

    obj.bucket2 = s3.alt.get_bucket(bucket.name, validate=False)
    obj.a2 = obj.bucket2.new_key(obj.a.name)
    obj.b2 = obj.bucket2.new_key(obj.b.name)
    obj.new = obj.bucket2.new_key('new')

    return obj


def get_bucket_key_names(bucket):
    return frozenset(k.name for k in bucket.list())


def test_access_bucket_private_object_private():
    # all the test_access_* tests follow this template
    obj = _setup_access(bucket_acl='private', object_acl='private')
    # acled object read fail
    check_access_denied(obj.a2.get_contents_as_string)
    # acled object write fail
    check_access_denied(obj.a2.set_contents_from_string, 'barcontent')
    # default object read fail
    check_access_denied(obj.b2.get_contents_as_string)
    # default object write fail
    check_access_denied(obj.b2.set_contents_from_string, 'baroverwrite')
    # bucket read fail
    check_access_denied(get_bucket_key_names, obj.bucket2)
    # bucket write fail
    check_access_denied(obj.new.set_contents_from_string, 'newcontent')


def test_access_bucket_private_object_publicread():
    obj = _setup_access(bucket_acl='private', object_acl='public-read')
    eq(obj.a2.get_contents_as_string(), 'foocontent')
    check_access_denied(obj.a2.set_contents_from_string, 'foooverwrite')
    check_access_denied(obj.b2.get_contents_as_string)
    check_access_denied(obj.b2.set_contents_from_string, 'baroverwrite')
    check_access_denied(get_bucket_key_names, obj.bucket2)
    check_access_denied(obj.new.set_contents_from_string, 'newcontent')


def test_access_bucket_private_object_publicreadwrite():
    obj = _setup_access(bucket_acl='private', object_acl='public-read-write')
    eq(obj.a2.get_contents_as_string(), 'foocontent')
    ### TODO: it seems AWS denies this write, even when we expected it
    ### to complete; as it is unclear what the actual desired behavior
    ### is (the docs are somewhat unclear), we'll just codify current
    ### AWS behavior, at least for now.
    # obj.a2.set_contents_from_string('foooverwrite')
    check_access_denied(obj.a2.set_contents_from_string, 'foooverwrite')
    check_access_denied(obj.b2.get_contents_as_string)
    check_access_denied(obj.b2.set_contents_from_string, 'baroverwrite')
    check_access_denied(get_bucket_key_names, obj.bucket2)
    check_access_denied(obj.new.set_contents_from_string, 'newcontent')


def test_access_bucket_publicread_object_private():
    obj = _setup_access(bucket_acl='public-read', object_acl='private')
    check_access_denied(obj.a2.get_contents_as_string)
    check_access_denied(obj.a2.set_contents_from_string, 'barcontent')
    ### TODO: i don't understand why this gets denied, but codifying what
    ### AWS does
    # eq(obj.b2.get_contents_as_string(), 'barcontent')
    check_access_denied(obj.b2.get_contents_as_string)
    check_access_denied(obj.b2.set_contents_from_string, 'baroverwrite')
    eq(get_bucket_key_names(obj.bucket2), frozenset(['foo', 'bar']))
    check_access_denied(obj.new.set_contents_from_string, 'newcontent')


def test_access_bucket_publicread_object_publicread():
    obj = _setup_access(bucket_acl='public-read', object_acl='public-read')
    eq(obj.a2.get_contents_as_string(), 'foocontent')
    check_access_denied(obj.a2.set_contents_from_string, 'foooverwrite')
    ### TODO: i don't understand why this gets denied, but codifying what
    ### AWS does
    # eq(obj.b2.get_contents_as_string(), 'barcontent')
    check_access_denied(obj.b2.get_contents_as_string)
    check_access_denied(obj.b2.set_contents_from_string, 'baroverwrite')
    eq(get_bucket_key_names(obj.bucket2), frozenset(['foo', 'bar']))
    check_access_denied(obj.new.set_contents_from_string, 'newcontent')


def test_access_bucket_publicread_object_publicreadwrite():
    obj = _setup_access(bucket_acl='public-read', object_acl='public-read-write')
    eq(obj.a2.get_contents_as_string(), 'foocontent')
    ### TODO: it seems AWS denies this write, even when we expected it
    ### to complete; as it is unclear what the actual desired behavior
    ### is (the docs are somewhat unclear), we'll just codify current
    ### AWS behavior, at least for now.
    # obj.a2.set_contents_from_string('foooverwrite')
    check_access_denied(obj.a2.set_contents_from_string, 'foooverwrite')
    ### TODO: i don't understand why this gets denied, but codifying what
    ### AWS does
    # eq(obj.b2.get_contents_as_string(), 'barcontent')
    check_access_denied(obj.b2.get_contents_as_string)
    check_access_denied(obj.b2.set_contents_from_string, 'baroverwrite')
    eq(get_bucket_key_names(obj.bucket2), frozenset(['foo', 'bar']))
    check_access_denied(obj.new.set_contents_from_string, 'newcontent')


def test_access_bucket_publicreadwrite_object_private():
    obj = _setup_access(bucket_acl='public-read-write', object_acl='private')
    check_access_denied(obj.a2.get_contents_as_string)
    obj.a2.set_contents_from_string('barcontent')
    ### TODO: i don't understand why this gets denied, but codifying what
    ### AWS does
    # eq(obj.b2.get_contents_as_string(), 'barcontent')
    check_access_denied(obj.b2.get_contents_as_string)
    obj.b2.set_contents_from_string('baroverwrite')
    eq(get_bucket_key_names(obj.bucket2), frozenset(['foo', 'bar']))
    obj.new.set_contents_from_string('newcontent')


def test_access_bucket_publicreadwrite_object_publicread():
    obj = _setup_access(bucket_acl='public-read-write', object_acl='public-read')
    eq(obj.a2.get_contents_as_string(), 'foocontent')
    obj.a2.set_contents_from_string('barcontent')
    ### TODO: i don't understand why this gets denied, but codifying what
    ### AWS does
    # eq(obj.b2.get_contents_as_string(), 'barcontent')
    check_access_denied(obj.b2.get_contents_as_string)
    obj.b2.set_contents_from_string('baroverwrite')
    eq(get_bucket_key_names(obj.bucket2), frozenset(['foo', 'bar']))
    obj.new.set_contents_from_string('newcontent')


def test_access_bucket_publicreadwrite_object_publicreadwrite():
    obj = _setup_access(bucket_acl='public-read-write', object_acl='public-read-write')
    eq(obj.a2.get_contents_as_string(), 'foocontent')
    obj.a2.set_contents_from_string('foooverwrite')
    ### TODO: i don't understand why this gets denied, but codifying what
    ### AWS does
    # eq(obj.b2.get_contents_as_string(), 'barcontent')
    check_access_denied(obj.b2.get_contents_as_string)
    obj.b2.set_contents_from_string('baroverwrite')
    eq(get_bucket_key_names(obj.bucket2), frozenset(['foo', 'bar']))
    obj.new.set_contents_from_string('newcontent')

def test_object_set_valid_acl():
    XML_1 = '<?xml version="1.0" encoding="UTF-8"?><AccessControlPolicy xmlns="http://s3.amazonaws.com/doc/2006-03-01/"><Owner><ID>' + config.main.user_id + '</ID></Owner><AccessControlList><Grant><Grantee xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="CanonicalUser"><ID>' + config.main.user_id + '</ID></Grantee><Permission>FULL_CONTROL</Permission></Grant></AccessControlList></AccessControlPolicy>'
    bucket = get_new_bucket()
    key = bucket.new_key('foo')
    key.set_contents_from_string('bar')
    key.set_xml_acl(XML_1)

def test_object_giveaway():
    obj = _setup_access(bucket_acl='public-read', object_acl='public-read-write')
    CORRECT_ACL = '<?xml version="1.0" encoding="UTF-8"?><AccessControlPolicy xmlns="http://s3.amazonaws.com/doc/2006-03-01/"><Owner><ID>' + config.main.user_id + '</ID></Owner><AccessControlList><Grant><Grantee xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="CanonicalUser"><ID>' + config.main.user_id + '</ID></Grantee><Permission>FULL_CONTROL</Permission></Grant></AccessControlList></AccessControlPolicy>'
    WRONG_ACL = '<?xml version="1.0" encoding="UTF-8"?><AccessControlPolicy xmlns="http://s3.amazonaws.com/doc/2006-03-01/"><Owner><ID>' + config.alt.user_id + '</ID></Owner><AccessControlList><Grant><Grantee xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="CanonicalUser"><ID>' + config.alt.user_id + '</ID></Grantee><Permission>FULL_CONTROL</Permission></Grant></AccessControlList></AccessControlPolicy>'
    bucket = get_new_bucket()
    key = bucket.new_key('foo')
    key.set_contents_from_string('bar')
    key.set_xml_acl(CORRECT_ACL)
    e = assert_raises(boto.exception.S3ResponseError, key.set_xml_acl, WRONG_ACL)
    eq(e.status, 403)
    eq(e.reason, 'Forbidden')
    eq(e.error_code, 'AccessDenied')

def test_buckets_create_then_list():
    create_buckets = [get_new_bucket() for i in xrange(5)]
    list_buckets = s3.main.get_all_buckets()
    names = frozenset(bucket.name for bucket in list_buckets)
    for bucket in create_buckets:
        if bucket.name not in names:
            raise RuntimeError("S3 implementation's GET on Service did not return bucket we created: %r", bucket.name)

# Common code to create a connection object, which'll use bad authorization information
def _create_connection_bad_auth():
    # We're going to need to manually build a connection using bad authorization info.
    # But to save the day, lets just hijack the settings from s3.main. :)
    main = s3.main
    conn = boto.s3.connection.S3Connection(
        aws_access_key_id='badauth',
        aws_secret_access_key='roflmao',
        is_secure=main.is_secure,
        port=main.port,
        host=main.host,
        calling_format=main.calling_format,
        )
    return conn

def test_list_buckets_anonymous():
    # Get a connection with bad authorization, then change it to be our new Anonymous auth mechanism,
    # emulating standard HTTP access.
    #
    # While it may have been possible to use httplib directly, doing it this way takes care of also
    # allowing us to vary the calling format in testing.
    conn = _create_connection_bad_auth()
    conn._auth_handler = AnonymousAuth.AnonymousAuthHandler(None, None, None) # Doesn't need this
    buckets = conn.get_all_buckets()
    eq(len(buckets), 0)

def test_list_buckets_bad_auth():
    conn = _create_connection_bad_auth()
    e = assert_raises(boto.exception.S3ResponseError, conn.get_all_buckets)
    eq(e.status, 403)
    eq(e.reason, 'Forbidden')
    eq(e.error_code, 'AccessDenied')

# this test goes outside the user-configure prefix because it needs to
# control the initial character of the bucket name
@attr('fails_on_rgw')
@nose.with_setup(
    setup=lambda: nuke_prefixed_buckets(prefix='a'+prefix),
    teardown=lambda: nuke_prefixed_buckets(prefix='a'+prefix),
    )
def test_bucket_create_naming_good_starts_alpha():
    check_good_bucket_name('foo', _prefix='a'+prefix)

# this test goes outside the user-configure prefix because it needs to
# control the initial character of the bucket name
@attr('fails_on_rgw')
@nose.with_setup(
    setup=lambda: nuke_prefixed_buckets(prefix='0'+prefix),
    teardown=lambda: nuke_prefixed_buckets(prefix='0'+prefix),
    )
def test_bucket_create_naming_good_starts_digit():
    check_good_bucket_name('foo', _prefix='0'+prefix)

def test_bucket_create_naming_good_contains_period():
    check_good_bucket_name('aaa.111')

def test_bucket_create_naming_good_contains_hyphen():
    check_good_bucket_name('aaa-111')

def test_object_copy_same_bucket():
    bucket = get_new_bucket()
    key = bucket.new_key('foo123bar')
    key.set_contents_from_string('foo')
    key.copy(bucket, 'bar321foo')
    key2 = bucket.get_key('bar321foo')
    eq(key2.get_contents_as_string(), 'foo')

def test_object_copy_diff_bucket():
    buckets = [get_new_bucket(), get_new_bucket()]
    key = buckets[0].new_key('foo123bar')
    key.set_contents_from_string('foo')
    key.copy(buckets[1], 'bar321foo')
    key2 = buckets[1].get_key('bar321foo')
    eq(key2.get_contents_as_string(), 'foo')


def transfer_part(bucket, mp_id, mp_keyname, i, part):
    """Transfer a part of a multipart upload. Designed to be run in parallel.
    """
    mp = boto.s3.multipart.MultiPartUpload(bucket)
    mp.key_name = mp_keyname
    mp.id = mp_id
    part_out = StringIO(part)
    mp.upload_part_from_file(part_out, i+1)

def generate_random(mb_size):
    mb = 1024 * 1024
    chunk = 1024
    part_size_mb = 5
    allowed = string.ascii_letters
    for x in range(0, mb_size, part_size_mb):
        strpart = ''.join([allowed[random.randint(0, len(allowed) - 1)] for x in xrange(chunk)])
        s = ''
        left = mb_size - x
        this_part_size = min(left, part_size_mb)
        for y in range(this_part_size  * mb / chunk):
            s = s + strpart
        yield s
        if (x == mb_size):
            return

def _multipart_upload(bucket, s3_key_name, mb_size, do_list=None):
    upload = bucket.initiate_multipart_upload(s3_key_name)
    for i, part in enumerate(generate_random(mb_size)):
        transfer_part(bucket, upload.id, upload.key_name, i, part)

    if do_list is not None:
        l = bucket.list_multipart_uploads()
        l = list(l)

    return upload

def test_multipart_upload():
    bucket = get_new_bucket()
    key="mymultipart"
    upload = _multipart_upload(bucket, key, 30)
    upload.complete_upload()

def test_abort_multipart_upload():
    bucket = get_new_bucket()
    key="mymultipart"
    upload = _multipart_upload(bucket, key, 10)
    upload.cancel_upload()


def test_list_multipart_upload():
    bucket = get_new_bucket()
    key="mymultipart"
    upload1 = _multipart_upload(bucket, key, 5, 1)
    upload2 = _multipart_upload(bucket, key, 5, 1)

    key2="mymultipart2"
    upload3 = _multipart_upload(bucket, key2, 5, 1)

    upload1.cancel_upload()
    upload2.cancel_upload()
    upload3.cancel_upload()

def _simple_http_req_100_cont(host, port, method, resource):
    req = '{method} {resource} HTTP/1.1\r\nHost: {host}\r\nAccept-Encoding: identity\r\nContent-Length: 123\r\nExpect: 100-continue\r\n\r\n'.format(
            method = method,
            resource = resource,
            host = host)

    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    s.settimeout(5)
    s.connect((host, port))
    s.send(req)

    try:
        data = s.recv(1024)
    except socket.error, msg:
        print 'got response: ', msg
        print 'most likely server doesn\'t support 100-continue'

    s.close()
    l = data.split(' ')

    assert l[0].startswith('HTTP')

    return l[1]

def test_100_continue():
    bucket = get_new_bucket()
    objname = 'testobj'
    resource = '/{bucket}/{obj}'.format(bucket = bucket.name, obj = objname)

    status = _simple_http_req_100_cont(s3.main.host, s3.main.port, 'PUT', resource)
    eq(status, '403')

    bucket.set_acl('public-read-write')

    status = _simple_http_req_100_cont(s3.main.host, s3.main.port, 'PUT', resource)
    eq(status, '100')

class FakeFile(object):
    def __init__(self, size, char='A', interrupt=None):
        self.offset = 0
        self.size = size
        self.char = char
        self.interrupt = interrupt

    def seek(self, offset):
        self.offset = offset

    def tell(self):
        return self.offset

    def read(self, size=-1):
        if size < 0:
            size = self.size - self.offset
        count = min(size, self.size - self.offset)
        self.offset += count

        # Sneaky! do stuff before we return (the last time)
        if self.interrupt != None and self.offset == self.size and count > 0:
            self.interrupt()

        return self.char*count

class FakeFileVerifier(object):
    def __init__(self, char=None):
        self.char = char
        self.size = 0

    def write(self, data):
        size = len(data)
        if self.char == None:
            self.char = data[0]
        self.size += size
        eq(data, self.char*size)

def _verify_atomic_key_data(key, size=-1, char=None):
    fp_verify = FakeFileVerifier(char)
    key.get_contents_to_file(fp_verify)
    if size >= 0:
        eq(fp_verify.size, size)

def _test_atomic_write(file_size):
    bucket = get_new_bucket()
    objname = 'testobj'
    key = bucket.new_key(objname)

    # create <file_size> file of A's
    fp_a = FakeFile(file_size, 'A')
    key.set_contents_from_file(fp_a)
    
    # verify A's
    _verify_atomic_key_data(key, file_size, 'A')

    # create <file_size> file of B's
    # but try to verify the file before we finish writing all the B's
    fp_b = FakeFile(file_size, 'B',
        lambda: _verify_atomic_key_data(key, file_size)
        )
    key.set_contents_from_file(fp_b)

    # verify B's
    _verify_atomic_key_data(key, file_size, 'B')

def test_atomic_write_1mb():
    _test_atomic_write(1024*1024)

def test_atomic_write_4mb():
    _test_atomic_write(1024*1024*4)

def test_atomic_write_8mb():
    _test_atomic_write(1024*1024*8)

def _test_atomic_dual_write(file_size):
    bucket = get_new_bucket()
    objname = 'testobj'
    key = bucket.new_key(objname)
    
    # get a second key object (for the same key)
    # so both can be writing without interfering
    key2 = bucket.new_key(objname)

    # write <file_size> file of B's
    # but before we're done, try to write all A's
    fp_a = FakeFile(file_size, 'A')
    fp_b = FakeFile(file_size, 'B',
        lambda: key2.set_contents_from_file(fp_a)
        )
    key.set_contents_from_file(fp_b)

    # verify the file
    _verify_atomic_key_data(key, file_size)

def test_atomic_dual_write_1mb():
    _test_atomic_dual_write(1024*1024)

def test_atomic_dual_write_4mb():
    _test_atomic_dual_write(1024*1024*4)

def test_atomic_dual_write_8mb():
    _test_atomic_dual_write(1024*1024*8)