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
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
|
#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright 2017 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Fetches articles from the server.
Examples:
$ fetch.py # unauthenticated, no experiments
$ fetch.py --short # abbreviate instead of dumping JSON
$ fetch.py --signed-in -x3313279 # authenticated, results from Google Now
If getting signed-in results, authenticates with OAuth2 and stores the
credentials at ~/.zineauth.
"""
from __future__ import absolute_import, division, print_function, unicode_literals
import argparse
import base64
import datetime
import json
import os
import textwrap
import oauth2client.client
import oauth2client.file
import oauth2client.tools
import requests
import sys
API_KEY_FILE = os.path.join(
os.path.dirname(__file__),
"../../../google_apis/internal/google_chrome_api_keys.h")
API_SCOPE = "https://www.googleapis.com/auth/chrome-content-suggestions"
API_HOSTS = {
"prod": "https://chromecontentsuggestions-pa.googleapis.com",
"staging": "https://staging-chromecontentsuggestions-pa.googleapis.com",
"alpha": "https://alpha-chromecontentsuggestions-pa.sandbox.googleapis.com",
}
API_PATH = "/v1/suggestions/fetch"
def main():
parser = argparse.ArgumentParser(
description="fetch articles from server",
parents=[oauth2client.tools.argparser])
parser.add_argument("-c", "--component",
default="prod", choices=["prod", "staging", "alpha"],
help="component to fetch from (default: prod)")
parser.add_argument("-x", "--experiment", action="append", type=int,
help="include an experiment ID")
parser.add_argument("--api-key", type=str,
help="API key to use for unauthenticated requests"
" (default: use official key)")
parser.add_argument("-s", "--signed-in", action="store_true",
help="sign in and issue authenticated request")
parser.add_argument("--client", metavar="ID,SECRET", type=str,
help="client project to use for authenticated requests"
" (default: use official project ID")
parser.add_argument("--short", action="store_true",
help="print results in abbreviated form")
args = parser.parse_args()
r = PostRequest(args)
j = {}
try:
j = r.json()
except ValueError:
print(r.text.encode("utf-8"))
sys.exit(1)
if j.get("error"):
print(r.text.encode("utf-8"))
sys.exit(1)
if args.short:
PrintShortResponse(j)
return
print(r.text.encode("utf-8"))
if r.status_code != 200:
sys.exit(1)
def GetApiKeyFile():
return API_KEY_FILE
def GetAPIDefs():
"""Parses the internal file with API keys and returns a dict."""
with open(GetApiKeyFile()) as f:
lines = f.readlines()
defs = {}
next_name = None
for line in lines:
if next_name:
defs[next_name] = json.loads(line)
next_name = None
elif line.startswith("#define"):
try:
_, name, value = line.split()
except ValueError:
continue
if value == "\\":
next_name = name
else:
defs[name] = json.loads(value)
return defs
def GetAPIKey():
return GetAPIDefs()["GOOGLE_API_KEY"]
def GetOAuthClient():
defs = GetAPIDefs()
return defs["GOOGLE_CLIENT_ID_MAIN"], defs["GOOGLE_CLIENT_SECRET_MAIN"]
def EncodeExperiments(experiments):
"""Turn a list of experiment IDs into an X-Client-Data header value.
Encodes all the IDs as a protobuf (tag 1, varint) and base64 encodes the
result.
"""
binary = b""
for exp in experiments:
binary += b"\x08"
while True:
byte = (exp & 0x7f)
exp >>= 7
if exp:
binary += chr(0x80 | byte)
else:
binary += chr(byte)
break
return base64.b64encode(binary)
def AbbreviateDuration(duration):
"""Turn a datetime.timedelta into a short string like "10h 14m"."""
w = duration.days // 7
d = duration.days % 7
h = duration.seconds // 3600
m = (duration.seconds % 3600) // 60
s = duration.seconds % 60
us = duration.microseconds
if w:
return "%dw %dd" % (w, d)
elif d:
return "%dd %dh" % (d, h)
elif h:
return "%dh %dm" % (h, m)
elif m:
return "%dm %ds" % (m, s)
elif s:
return "%ds" % s
elif us:
return "<1s"
else:
return "0s"
def PostRequest(args):
url = API_HOSTS[args.component] + API_PATH
headers = {}
if args.experiment:
headers["X-Client-Data"] = EncodeExperiments(args.experiment)
if args.signed_in:
if args.client:
client_id, client_secret = args.client.split(",")
else:
client_id, client_secret = GetOAuthClient()
Authenticate(args, headers, client_id, client_secret)
else:
if args.api_key:
api_key = args.api_key
else:
api_key = GetAPIKey()
url += "?key=" + api_key
return requests.post(url, headers=headers)
def Authenticate(args, headers, client_id, client_secret):
storage = oauth2client.file.Storage(os.path.expanduser("~/.zineauth"))
creds = storage.get()
if not creds or creds.invalid or creds.access_token_expired:
flow = oauth2client.client.OAuth2WebServerFlow(
client_id=client_id, client_secret=client_secret,
scope=API_SCOPE)
oauth2client.tools.run_flow(flow, storage, args)
creds = storage.get()
creds.apply(headers)
def PrintShortResponse(j):
now = datetime.datetime.now()
for category in j["categories"]:
print("%s: " % category["localizedTitle"])
for suggestion in category["suggestions"]:
attribution = suggestion["attribution"]
title = suggestion["title"]
full_url = suggestion["fullPageUrl"]
amp_url = suggestion.get("ampUrl")
creation_time = suggestion["creationTime"]
if len(title) > 40:
title = textwrap.wrap(title, 40)[0] + "…"
creation_time = ParseDateTime(creation_time)
age = AbbreviateDuration(now - creation_time)
print(" “%s” (%s, %s ago)" % (title, attribution, age))
print(" " + (amp_url or full_url))
if category["allowFetchingMoreResults"]:
print(" [More]")
def ParseDateTime(creation_time):
try:
return datetime.datetime.strptime(creation_time, "%Y-%m-%dT%H:%M:%SZ")
except ValueError:
return datetime.datetime.strptime(creation_time, "%Y-%m-%dT%H:%M:%S.%fZ")
if __name__ == "__main__":
main()
|
