|
1
|
1 |
|
import logging |
|
2
|
1 |
|
from urllib.parse import unquote |
|
3
|
|
|
|
|
4
|
1 |
|
import requests |
|
5
|
1 |
|
from flask import (Response, url_for, render_template, send_file, |
|
|
|
|
|
|
6
|
|
|
current_app, request) |
|
7
|
|
|
|
|
8
|
|
|
|
|
9
|
1 |
|
log = logging.getLogger(__name__) |
|
10
|
|
|
|
|
11
|
|
|
|
|
12
|
1 |
|
def route(*args, **kwargs): |
|
13
|
|
|
"""Unquoted version of Flask's `url_for`.""" |
|
14
|
1 |
|
return _secure(unquote(url_for(*args, **kwargs))) |
|
15
|
|
|
|
|
16
|
|
|
|
|
17
|
1 |
|
def display(title, path, share=False, raw=False, mimetype='image/jpeg'): |
|
18
|
|
|
"""Render a webpage or raw image based on request.""" |
|
19
|
1 |
|
mimetypes = request.headers.get('Accept', "").split(',') |
|
20
|
1 |
|
browser = 'text/html' in mimetypes |
|
21
|
|
|
|
|
22
|
1 |
|
img = _format_url(request, 'share') |
|
23
|
1 |
|
img_twitter = _format_url( |
|
24
|
|
|
request, 'share', |
|
25
|
|
|
width=current_app.config['TWITTER_IMAGE_WIDTH'], |
|
26
|
|
|
height=current_app.config['TWITTER_IMAGE_HEIGHT'], |
|
27
|
|
|
) |
|
28
|
1 |
|
img_facebook = _format_url( |
|
29
|
|
|
request, 'share', |
|
30
|
|
|
width=current_app.config['FACEBOOK_IMAGE_WIDTH'], |
|
31
|
|
|
height=current_app.config['FACEBOOK_IMAGE_HEIGHT'], |
|
32
|
|
|
) |
|
33
|
1 |
|
url = _format_url(request, 'width', 'height') |
|
34
|
|
|
|
|
35
|
1 |
|
if share: |
|
36
|
1 |
|
log.info("Sharing image on page: %s", img) |
|
37
|
|
|
|
|
38
|
1 |
|
html = render_template( |
|
39
|
|
|
'share.html', |
|
40
|
|
|
title=title, |
|
41
|
|
|
img=_secure(img), |
|
42
|
|
|
img_twitter=_secure(img_twitter), |
|
43
|
|
|
img_facebook=_secure(img_facebook), |
|
44
|
|
|
url=_secure(url), |
|
45
|
|
|
config=current_app.config, |
|
46
|
|
|
) |
|
47
|
1 |
|
return html if raw else _nocache(Response(html)) |
|
48
|
|
|
|
|
49
|
1 |
|
elif browser: |
|
50
|
1 |
|
log.info("Embedding image on page: %s", img) |
|
51
|
|
|
|
|
52
|
1 |
|
html = render_template( |
|
53
|
|
|
'image.html', |
|
54
|
|
|
title=title, |
|
55
|
|
|
img=_secure(img), |
|
56
|
|
|
config=current_app.config, |
|
57
|
|
|
) |
|
58
|
1 |
|
return html if raw else _nocache(Response(html)) |
|
59
|
|
|
|
|
60
|
|
|
else: |
|
61
|
1 |
|
log.info("Sending image: %s", path) |
|
62
|
1 |
|
return send_file(path, mimetype=mimetype) |
|
63
|
|
|
|
|
64
|
|
|
|
|
65
|
1 |
|
def track(title): |
|
66
|
|
|
"""Log the requested content, server-side.""" |
|
67
|
1 |
|
google_url = current_app.config['GOOGLE_ANALYTICS_URL'] |
|
68
|
1 |
|
google_tid = current_app.config['GOOGLE_ANALYTICS_TID'] |
|
69
|
1 |
|
google_data = dict( |
|
70
|
|
|
v=1, |
|
71
|
|
|
tid=google_tid, |
|
72
|
|
|
cid=request.remote_addr, |
|
73
|
|
|
|
|
74
|
|
|
t='pageview', |
|
75
|
|
|
dh='memegen.link', |
|
76
|
|
|
dp=request.full_path, |
|
77
|
|
|
dt=str(title), |
|
78
|
|
|
|
|
79
|
|
|
uip=request.remote_addr, |
|
80
|
|
|
ua=request.user_agent.string, |
|
81
|
|
|
) |
|
82
|
1 |
|
if google_tid != 'localhost': |
|
83
|
|
|
response = requests.post(google_url, data=google_data) |
|
84
|
|
|
params = _format_query(google_data, as_string=True) |
|
85
|
|
|
log.debug("Tracking POST: %s %s", response.url, params) |
|
86
|
|
|
|
|
87
|
1 |
|
remote_url = current_app.config['REMOTE_TRACKING_URL'] |
|
88
|
1 |
|
remote_data = dict( |
|
89
|
|
|
text=str(title), |
|
90
|
|
|
source='memegen.link', |
|
91
|
|
|
context=unquote(request.url), |
|
92
|
|
|
) |
|
93
|
1 |
|
if remote_url: |
|
94
|
|
|
response = requests.get(remote_url, params=remote_data) |
|
95
|
|
|
log.debug("Tracking GET: %s", response.url) |
|
96
|
|
|
|
|
97
|
|
|
|
|
98
|
1 |
|
def _secure(url): |
|
99
|
|
|
"""Ensure HTTPS is used in production.""" |
|
100
|
1 |
|
if current_app.config['ENV'] == 'prod': |
|
101
|
1 |
|
if url.startswith('http:'): |
|
102
|
1 |
|
url = url.replace('http:', 'https:', 1) |
|
103
|
1 |
|
return url |
|
104
|
|
|
|
|
105
|
|
|
|
|
106
|
1 |
|
def _format_url(req, *skip, **add): |
|
107
|
|
|
"""Get a formatted URL with sanitized query parameters.""" |
|
108
|
1 |
|
base = req.base_url |
|
109
|
|
|
|
|
110
|
1 |
|
options = {k: v[0] for k, v in dict(req.args).items() if k not in skip} |
|
111
|
1 |
|
options.update(add) |
|
112
|
|
|
|
|
113
|
1 |
|
params = _format_query(options) |
|
114
|
|
|
|
|
115
|
1 |
|
if params: |
|
116
|
1 |
|
return base + "?{}".format("&".join(params)) |
|
117
|
|
|
else: |
|
118
|
1 |
|
return base |
|
119
|
|
|
|
|
120
|
|
|
|
|
121
|
1 |
|
def _format_query(options, *, as_string=False): |
|
122
|
1 |
|
pattern = "{}={!r}" if as_string else "{}={}" |
|
123
|
1 |
|
pairs = sorted(pattern.format(k, v) for k, v in options.items()) |
|
124
|
1 |
|
if as_string: |
|
125
|
|
|
return ' '.join(pairs) |
|
126
|
1 |
|
return pairs |
|
127
|
|
|
|
|
128
|
|
|
|
|
129
|
1 |
|
def _nocache(response): |
|
130
|
|
|
"""Ensure a response is not cached.""" |
|
131
|
|
|
response.headers['Cache-Control'] = 'no-cache, no-store, must-revalidate' |
|
132
|
|
|
response.headers['Pragma'] = 'no-cache' |
|
133
|
|
|
response.headers['Expires'] = '0' |
|
134
|
|
|
return response |
|
135
|
|
|
|
jacebrowning /
memegen
This can be caused by one of the following:
1. Missing Dependencies
This error could indicate a configuration issue of Pylint. Make sure that your libraries are available by adding the necessary commands.
2. Missing __init__.py files
This error could also result from missing
__init__.pyfiles in your module folders. Make sure that you place one file in each sub-folder.