File: securitygroup.py

package info (click to toggle)
python-boto 1.2a-1
  • links: PTS, VCS
  • area: main
  • in suites: lenny
  • size: 720 kB
  • ctags: 1,042
  • sloc: python: 6,709; makefile: 37
file content (203 lines) | stat: -rw-r--r-- 7,583 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
# Copyright (c) 2006,2007 Mitch Garnaat http://garnaat.org/
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish, dis-
# tribute, sublicense, and/or sell copies of the Software, and to permit
# persons to whom the Software is furnished to do so, subject to the fol-
# lowing conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
# ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
# SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 
# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
# IN THE SOFTWARE.

"""
Represents an EC2 Security Group
"""

class SecurityGroup:
    
    def __init__(self, connection=None, owner_id=None,
                 name=None, description=None):
        self.connection = connection
        self.owner_id = owner_id
        self.name = name
        self.description = description
        self.rules = []

    def __repr__(self):
        return 'SecurityGroup:%s' % self.name

    def startElement(self, name, attrs, connection):
        if name == 'item':
            self.rules.append(IPPermissions(self))
            return self.rules[-1]
        else:
            return None

    def endElement(self, name, value, connection):
        if name == 'ownerId':
            self.owner_id = value
        elif name == 'groupName':
            self.name = value
        elif name == 'groupDescription':
            self.description = value
        elif name == 'ipRanges':
            pass
        elif name == 'return':
            if value == 'false':
                self.status = False
            elif value == 'true':
                self.status = True
            else:
                raise Exception(
                    'Unexpected value of status %s for image %s'%(
                        value, 
                        self.id
                    )
                )
        else:
            setattr(self, name, value)

    def delete(self):
        return self.connection.delete_security_group(self.name)

    def add_rule(self, ip_protocol, from_port, to_port,
                 src_group_name, src_group_owner_id, cidr_ip):
        rule = IPPermissions(self)
        rule.ip_protocol = ip_protocol
        rule.from_port = from_port
        rule.to_port = to_port
        self.rules.append(rule)
        rule.add_grant(src_group_name, src_group_owner_id, cidr_ip)

    def remove_rule(self, ip_protocol, from_port, to_port,
                    src_group_name, src_group_owner_id, cidr_ip):
        target_rule = None
        for rule in self.rules:
            if rule.ip_protocol == ip_protocol:
                if rule.from_port == from_port:
                    if rule.to_port == to_port:
                        target_rule = rule
                        target_grant = None
                        for grant in rule.grants:
                            if grant.group_name == src_group_name:
                                if grant.user_id == src_group_owner_id:
                                    if grant.cidr_ip == cidr_ip:
                                        target_grant = grant
                        if target_grant:
                            rule.grants.remove(target_grant)
        if len(rule.grants) == 0:
            self.rules.remove(target_rule)

    def authorize(self, ip_protocol=None, from_port=None, to_port=None,
                  cidr_ip=None, src_group=None):
        if src_group:
            src_group_name = src_group.name
            src_group_owner_id = src_group.owner_id
        else:
            src_group_name = None
            src_group_owner_id = None
        status = self.connection.authorize_security_group(self.name,
                                                          src_group_name,
                                                          src_group_owner_id,
                                                          ip_protocol,
                                                          from_port,
                                                          to_port,
                                                          cidr_ip)
        if status:
            self.add_rule(ip_protocol, from_port, to_port, src_group_name,
                          src_group_owner_id, cidr_ip)
        return status

    def revoke(self, ip_protocol=None, from_port=None, to_port=None,
               cidr_ip=None, src_group=None):
        if src_group:
            src_group_name = src_group.name
            src_group_owner_id = src_group.owner_id
        else:
            src_group_name = None
            src_group_owner_id = None
        status = self.connection.revoke_security_group(self.name,
                                                       src_group_name,
                                                       src_group_owner_id,
                                                       ip_protocol,
                                                       from_port,
                                                       to_port,
                                                       cidr_ip)
        if status:
            self.remove_rule(ip_protocol, from_port, to_port, src_group_name,
                             src_group_owner_id, cidr_ip)
        return status

class IPPermissions:

    def __init__(self, parent=None):
        self.parent = parent
        self.ip_protocol = None
        self.from_port = None
        self.to_port = None
        self.grants = []

    def __repr__(self):
        return 'IPPermissions:%s(%s-%s)' % (self.ip_protocol,
                                            self.from_port, self.to_port)

    def startElement(self, name, attrs, connection):
        if name == 'item':
            self.grants.append(GroupOrCIDR(self))
            return self.grants[-1]
        return None

    def endElement(self, name, value, connection):
        if name == 'ipProtocol':
            self.ip_protocol = value
        elif name == 'fromPort':
            self.from_port = value
        elif name == 'toPort':
            self.to_port = value
        else:
            setattr(self, name, value)

    def add_grant(self, user_id=None, group_name=None, cidr_ip=None):
        grant = GroupOrCIDR(self)
        grant.user_id = user_id
        grant.group_name = group_name
        grant.cidr_ip = cidr_ip
        self.grants.append(grant)
        return grant

class GroupOrCIDR:

    def __init__(self, parent=None):
        self.user_id = None
        self.group_name = None
        self.cidr_ip = None

    def __repr__(self):
        if self.cidr_ip:
            return '%s' % self.cidr_ip
        else:
            return '%s-%s' % (self.group_name, self.user_id)

    def startElement(self, name, attrs, connection):
        return None

    def endElement(self, name, value, connection):
        if name == 'userId':
            self.user_id = value
        elif name == 'groupName':
            self.group_name = value
        if name == 'cidrIp':
            self.cidr_ip = value
        else:
            setattr(self, name, value)