aboutsummaryrefslogtreecommitdiffstats
path: root/backend/magiback
blob: 526e98a7d6d183bd26381e5d3ae6801b64f00002 (plain)
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
204
205
206
#!/usr/bin/python3

from gi.repository import GLib
from pydbus import SystemBus
import isodumper.raw_write as raw_write
import threading
import gettext
import logging

DEAMON_ORG = 'org.mageia.Magiback'
DEAMON_INTERFACE = DEAMON_ORG
ISODUMPER_INTERFACE = DEAMON_ORG + ".Isodumper"
logging.basicConfig(filename="/var/log/magiback.log",
                    format='%(asctime)s %(levelname)-8s %(message)s',
                    level=logging.DEBUG)

class Isodumper(raw_write.Dumper):
    """
		<node>
			<interface name='org.mageia.Magiback.Isodumper'>
				<method name='do_write'>
					<arg type='s' name='source' direction='in'/>
					<arg type='s' name='target' direction='in'/>
					<arg type='x' name='size' direction='in'/>
				</method>
				<method name='do_format'>
					<arg type='s' name='device' direction='in'/>
					<arg type='s' name='format' direction='in'/>
					<arg type='b' name='success' direction='out'/>
					<arg type='s' name='message' direction='out'/>
				</method>
				<method name='check_write'>
					<arg type='s' name='target' direction='in'/>
					<arg type='s' name='source' direction='in'/>
				</method>
				<method name='do_persistence'>
					<arg type='s' name='target' direction='in'/>
					<arg type='s' name='label' direction='in'/>
					<arg type='s' name='key' direction='in'/>
				</method>
				<method name='set_backup_mode'>
					<arg type='x' name='uid' direction='in'/>
					<arg type='x' name='gid' direction='in'/>
				</method>
				<method name='unset_backup_mode'>
				</method>
				<method name='end'>
					<arg type='b' name='success' direction='out'/>
					<arg type='s' name='message' direction='out'/>
				</method>
                <property name="done" type="b" access="read"/>
                <property name="progress" type="i" access="read"/>
                <property name="message" type="s" access="read"/>
                <property name="state" type="b" access="read"/>
			</interface>
		</node>
    """
    def __init__(self):
        super().__init__()
        APP = "isodumper"
        DIR = "/usr/share/locale"
        # Call translation catalog
        gettext.install(APP, localedir=DIR,)
        self.finished = threading.Event()
        # finished is cleared at start of operation, and set at the end
        self.finished.clear()
        self._progress = 0
        self.loop = GLib.MainLoop()
        self.return_state = False
        self.return_message = ""
        self.authorized_sender_read = set()
        self.authorized_sender_write = set()
        self.sum_check = ""
        self.sum_check_searched = False
        self.signature_checked = False
        self.writing_perm = False
        self.writing_target = ""
        self.backup_mode = False
        self.uid = 0
        self.gid = 0

    def do_write(self, source, target, size, dbus_context):
        self.finished.clear()
        if check_permission('org.mageia.Magiback.Isodumper.write', dbus_context):
            self.thread = threading.Thread(target=self._do_write, args=(source, target, size, self.backup_mode, self.uid, self.uid))
            self.thread.start()
            logging.debug("Writing thread started")
            self.writing_perm = True
            self.writing_target = target
        else:
            self.return_message = "Writing: Access denied"
            logging.debug(self.return_message)
            self.finished.set()

    def do_persistence(self, target, label, key):
        self.finished.clear()
        if self.writing_perm and self.writing_target == target:
            self.thread = threading.Thread(target=self._do_persistence, args=(target, label, key))
            self.thread.start()
            logging.debug("Persistence thread started")
        else:
            self.return_message = "Persistence: Access denied"
            self.finished.set()
        self.writing_perm = False
        self.writing_target = ""

    @property
    def done(self):
        return self.finished.wait(1)

    @property
    def message(self):
        return self.return_message

    @property
    def state(self):
        return self.return_state

    def end(self):
        if hasattr(self, 'thread'):
            self.thread.join()
        self._progress = 0
        self.finished.clear()
        return self.return_state, self.return_message

    @property
    def progress(self):
        return self._progress

    def check_write(self, target, source):
        if hasattr(self, 'key_thread'):
            self.key_thread.join()
        self.thread = threading.Thread(target=self._check_write, args=(target, source,))
        self.thread.start()

    def set_backup_mode(self, uid, gid):
        self.backup_mode = True
        self.uid = uid
        self.gid = gid

    def unset_backup_mode(self):
        self.backup_mode = False
        self.uid = 0
        self.gid = 0

    def run(self):
        self.loop.run()


def check_permission(action, dbus_context):
    """ Check permission
    """
    return dbus_context.is_authorized(action, {'polkit.icon_name': 'isodumper.png', }, interactive=True)


class ConfFile(object):
    """
		<node>
			<interface name='org.mageia.Magiback'>
				<method name='setName'>
					<arg type='s' name='a' direction='in'/>
				</method>
				<method name='getFile'>
					<arg type='s' name='content' direction='out'/>
				</method>
				<method name='saveFile'>
					<arg type='s' name='content' direction='in'/>
				</method>
			</interface>
		</node>
    """
    def __init__(self):
        super().__init__()

    def setName(self, file_name):
        self.file_name = file_name

    def getFile(self):
        with open(self.file_name, 'r') as tcf:
            # read the file
            content=""
            while 1:
                line = tcf.readline()
                if not line:
                    break
                content += line
        return content

    def saveFile(self, tc, dbus_context):
        if check_permission('org.mageia.Magiback.write', dbus_context):
            try:
                with open(self.file_name, 'w') as tcf:
                    tcf.write(tc)
            except:
                return False
            return True


if __name__ == '__main__':
    print("Running Magiback service.")
    bus = SystemBus()
    conf_file = ConfFile()
    bus.publish(DEAMON_ORG, conf_file, ("Isodumper", Isodumper()))
    loop = GLib.MainLoop()
    loop.run()
    logging.shutdown()