Passed
Pull Request — master (#314)
by Jaspar
01:51
created

send-targets.parse_send_xml_tree()   F

Complexity

Conditions 15

Size

Total Lines 79
Code Lines 57

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
cc 15
eloc 57
nop 2
dl 0
loc 79
rs 2.9998
c 0
b 0
f 0

How to fix   Long Method    Complexity   

Long Method

Small methods make your code easier to understand, in particular if combined with a good name. Besides, if your method is small, finding a good name is usually much easier.

For example, if you find yourself adding comments to a method's body, this is usually a good sign to extract the commented part to a new method, and use the comment as a starting point when coming up with a good name for this new method.

Commonly applied refactorings include:

Complexity

Complex classes like send-targets.parse_send_xml_tree() often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.

Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.

1
# -*- coding: utf-8 -*-
2
# Copyright (C) 2018-2019 Greenbone Networks GmbH
3
#
4
# SPDX-License-Identifier: GPL-3.0-or-later
5
#
6
# This program is free software: you can redistribute it and/or modify
7
# it under the terms of the GNU General Public License as published by
8
# the Free Software Foundation, either version 3 of the License, or
9
# (at your option) any later version.
10
#
11
# This program is distributed in the hope that it will be useful,
12
# but WITHOUT ANY WARRANTY; without even the implied warranty of
13
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14
# GNU General Public License for more details.
15
#
16
# You should have received a copy of the GNU General Public License
17
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
18
19
import sys
20
from gvm.protocols.gmpv9.types import get_alive_test_from_string
21
22
from lxml import etree
23
24
25
def check_args(args):
26
    len_args = len(args.script) - 1
27
    if len_args != 1:
28
        message = """
29
        This script pulls target data from an xml document and feeds it to \
30
    a desired GSM
31
        One parameter after the script name is required.
32
33
        1. <xml_doc>  -- .xml file containing targets
34
35
        Example:
36
            $ gvm-script --gmp-username name --gmp-password pass \
37
    ssh --hostname <gsm> scripts/send-targets.gmp.py example_file.xml
38
        """
39
        print(message)
40
        quit()
41
42
43
def error_and_exit(msg):
44
    print("Error: {}\n".format(msg), file=sys.stderr)
45
    sys.exit(1)
46
47
48
def yes_or_no(question):
49
    reply = str(input(question + ' (y/n): ')).lower().strip()
50
    if reply[0] == ('y'):
51
        return True
52
    if reply[0] == ('n'):
53
        return False
54
    else:
55
        return yes_or_no("Please enter 'y' or 'n'")
56
57
58
def create_xml_tree(xml_doc):
59
    try:
60
        xml_tree = etree.parse(xml_doc)
61
        xml_tree = etree.tostring(xml_tree)
62
        xml_tree = etree.XML(xml_tree)
63
    except IOError as err:
64
        error_and_exit("Failed to read xml_file: {} (exit)".format(str(err)))
65
    except etree.Error as err:
66
        error_and_exit("Failed to parse xml_file: {} (exit)".format(str(err)))
67
68
    if len(xml_tree) == 0:
69
        error_and_exit("XML file is empty (exit)")
70
71
    return xml_tree
72
73
74
def parse_send_xml_tree(gmp, xml_tree):
75
    credential_options = [
76
        'ssh_credential',
77
        'smb_credential',
78
        'esxi_credential',
79
        'snmp_credential',
80
    ]
81
    counter = 1
82
83
    for target in xml_tree.xpath('target'):
84
        keywords = {}  # {'make_unique': True}
85
86
        keywords['name'] = target.find('name').text
87
88
        keywords['hosts'] = target.find('hosts').text.split(',')
89
90
        exclude_hosts = target.find('exclude_hosts').text
91
        if exclude_hosts is not None:
92
            keywords['exclude_hosts'] = exclude_hosts.split(',')
93
94
        comment = target.find('comment').text
95
        if comment is not None:
96
            keywords['comment'] = comment
97
98
        credentials = gmp.get_credentials()[0].xpath("//credential/@id")
99
100
        for credential in credential_options:
101
            cred_id = target.find(credential).xpath('@id')[0]
102
            if cred_id == '':
103
                continue
104
            if cred_id not in credentials:
105
                response = yes_or_no(
106
                    "\nThe credential '{}' for 'target {}' could not be "
107
                    "located...\nWould you like to continue?".format(
108
                        credential, counter
109
                    )
110
                )
111
112
                if response is False:
113
                    print("Terminating...\n")
114
                    quit()
115
                else:
116
                    continue
117
118
            key = '{}_id'.format(credential)
119
            keywords[key] = cred_id
120
            elem_path = target.find(credential)
121
            port = elem_path.find('port')
122
            if port is not None and port.text is not None:
123
                port_key = '{}_port'.format(credential)
124
                keywords[port_key] = elem_path.find('port').text
125
126
        alive_test = get_alive_test_from_string(target.find('alive_tests').text)
127
128
        if alive_test is not None:
129
            keywords['alive_test'] = alive_test
130
131
        reverse_lookup_only = target.find('reverse_lookup_only').text
132
        if reverse_lookup_only == '1':
133
            keywords['reverse_lookup_only'] = 1
134
135
        reverse_lookup_unify = target.find('reverse_lookup_unify').text
136
        if reverse_lookup_unify == '1':
137
            keywords['reverse_lookup_unify'] = 1
138
139
        port_range = target.find('port_range')
140
        if port_range is not None:
141
            keywords['port_range'] = port_range.text
142
143
        if target.xpath('port_list/@id') is not None:
144
            port_list = {}
145
            port_list = target.xpath('port_list/@id')[0]
146
            keywords['port_list_id'] = port_list
147
148
        print(keywords)
149
150
        gmp.create_target(**keywords)
151
152
        counter += 1
153
154
155
def main(gmp, args):
156
    # pylint: disable=undefined-variable
157
158
    check_args(args)
159
160
    xml_doc = args.script[1]
161
162
    print('\nSending targets...')
163
164
    xml_tree = create_xml_tree(xml_doc)
165
    parse_send_xml_tree(gmp, xml_tree)
166
167
    print('\n  Target(s) created!\n')
168
169
170
if __name__ == '__gmp__':
171
    main(gmp, args)  # pylint: disable=undefined-variable
0 ignored issues
show
Comprehensibility Best Practice introduced by
The variable args does not seem to be defined.
Loading history...
Comprehensibility Best Practice introduced by
The variable gmp does not seem to be defined.
Loading history...
172