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
|
'''
searx is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
searx is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with searx. If not, see < http://www.gnu.org/licenses/ >.
(C) 2017- by Alexandre Flament, <alex@al-f.net>
'''
from typing import Optional, Union
class SearxException(Exception):
pass
class SearxParameterException(SearxException):
def __init__(self, name, value):
if value == '' or value is None:
message = 'Empty ' + name + ' parameter'
else:
message = 'Invalid value "' + value + '" for parameter ' + name
super().__init__(message)
self.message = message
self.parameter_name = name
self.parameter_value = value
class SearxSettingsException(SearxException):
"""Error while loading the settings"""
def __init__(self, message: Union[str, Exception], filename: Optional[str]):
super().__init__(message)
self.message = message
self.filename = filename
class SearxEngineException(SearxException):
"""Error inside an engine"""
class SearxXPathSyntaxException(SearxEngineException):
"""Syntax error in a XPATH"""
def __init__(self, xpath_spec, message):
super().__init__(str(xpath_spec) + " " + message)
self.message = message
# str(xpath_spec) to deal with str and XPath instance
self.xpath_str = str(xpath_spec)
class SearxEngineResponseException(SearxEngineException):
"""Impossible to parse the result of an engine"""
class SearxEngineAPIException(SearxEngineResponseException):
"""The website has returned an application error"""
class SearxEngineAccessDeniedException(SearxEngineResponseException):
"""The website is blocking the access"""
def __init__(self, suspended_time=24 * 3600, message='Access denied'):
super().__init__(message + ', suspended_time=' + str(suspended_time))
self.suspended_time = suspended_time
self.message = message
class SearxEngineCaptchaException(SearxEngineAccessDeniedException):
"""The website has returned a CAPTCHA
By default, searx stops sending requests to this engine for 1 day.
"""
def __init__(self, suspended_time=24 * 3600, message='CAPTCHA'):
super().__init__(message=message, suspended_time=suspended_time)
class SearxEngineTooManyRequestsException(SearxEngineAccessDeniedException):
"""The website has returned a Too Many Request status code
By default, searx stops sending requests to this engine for 1 hour.
"""
def __init__(self, suspended_time=3600, message='Too many request'):
super().__init__(message=message, suspended_time=suspended_time)
class SearxEngineXPathException(SearxEngineResponseException):
"""Error while getting the result of an XPath expression"""
def __init__(self, xpath_spec, message):
super().__init__(str(xpath_spec) + " " + message)
self.message = message
# str(xpath_spec) to deal with str and XPath instance
self.xpath_str = str(xpath_spec)
|
