我正在尝试使用Google的app api来授权我的python程序查询google-cloud-print队列。我正在使用https://developers.google.com/cloud-print/docs/pythonCode中的所有信息。包括我在Google中的云应用程序中创建的登录名，密码和客户端ID。我仍然得到404错误。 Gaia方法在令牌字典中不返回任何内容。有没有人有这方面的经验？或者使用他们的新OAuth2系统？我似乎无法在谷歌上找到关于这个问题的任何内容。
这是我的程序，其中包含我的登录详细信息。
import base64
import httplib
import sys
import os
import time
import logging
import mimetools
import urllib
import urllib2
import optparse
import string
import ConfigParser
import json
CRLF = '\r\n'
BOUNDARY = mimetools.choose_boundary()
# The following are used for authentication functions.
FOLLOWUP_HOST = 'www.google.com/cloudprint'
FOLLOWUP_URI = 'select%2Fgaiaauth'
GAIA_HOST = 'www.google.com'
LOGIN_URI = '/accounts/ServiceLoginAuth'
LOGIN_URL = 'https://www.google.com/accounts/ClientLogin'
SERVICE = 'cloudprint'
OAUTH = '175351968146.apps.googleusercontent.com'
# The following are used for general backend access.
CLOUDPRINT_URL = 'http://www.google.com/cloudprint'
# CLIENT_NAME should be some string identifier for the client you are writing.
CLIENT_NAME = 'google-cloud-print'
# The following object is used in the sample code, but is not necessary.
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)
def EncodeMultiPart(fields, files, file_type='application/xml'):
"""Encodes list of parameters and files for HTTP multipart format.
Args:
fields: list of tuples containing name and value of parameters.
files: list of tuples containing param name, filename, and file contents.
file_type: string if file type different than application/xml.
Returns:
A string to be sent as data for the HTTP post request.
"""
lines = []
for (key, value) in fields:
lines.append('--' + BOUNDARY)
lines.append('Content-Disposition: form-data; name="%s"' % key)
lines.append('') # blank line
lines.append(value)
for (key, filename, value) in files:
lines.append('--' + BOUNDARY)
lines.append(
'Content-Disposition: form-data; name="%s"; filename="%s"'
% (key, filename))
lines.append('Content-Type: %s' % file_type)
lines.append('') # blank line
lines.append(value)
lines.append('--' + BOUNDARY + '--')
lines.append('') # blank line
return CRLF.join(lines)
def GetUrl(url, tokens, data=None, cookies=False, anonymous=False):
"""Get URL, with GET or POST depending data, adds Authorization header.
Args:
url: Url to access.
tokens: dictionary of authentication tokens for specific user.
data: If a POST request, data to be sent with the request.
cookies: boolean, True = send authentication tokens in cookie headers.
anonymous: boolean, True = do not send login credentials.
Returns:
String: response to the HTTP request.
"""
request = urllib2.Request(url)
if not anonymous:
if cookies:
logger.debug('Adding authentication credentials to cookie header')
request.add_header('Cookie', 'SID=%s; HSID=%s; SSID=%s' % (
tokens['SID'], tokens['HSID'], tokens['SSID']))
else: # Don't add Auth headers when using Cookie header with auth tokens.
request.add_header('Authorization', 'GoogleLogin auth=%s' % tokens['Auth'])
request.add_header('X-CloudPrint-Proxy', 'api-prober')
if data:
request.add_data(data)
request.add_header('Content-Length', str(len(data)))
request.add_header('Content-Type', 'multipart/form-data;boundary=%s' % BOUNDARY)
# In case the gateway is not responding, we'll retry.
retry_count = 0
while retry_count < 5:
try:
result = urllib2.urlopen(request).read()
return result
except urllib2.HTTPError, e:
# We see this error if the site goes down. We need to pause and retry.
err_msg = 'Error accessing %s\n%s' % (url, e)
logger.error(err_msg)
logger.info('Pausing %d seconds', 60)
time.sleep(60)
retry_count += 1
if retry_count == 5:
return err_msg
def GetCookie(cookie_key, cookie_string):
"""Extract the cookie value from a set-cookie string.
Args:
cookie_key: string, cookie identifier.
cookie_string: string, from a set-cookie command.
Returns:
string, value of cookie.
"""
logger.debug('Getting cookie from %s', cookie_string)
id_string = cookie_key + '='
cookie_crumbs = cookie_string.split(';')
for c in cookie_crumbs:
if id_string in c:
cookie = c.split(id_string)
return cookie[1]
return None
def ConvertJson(json_str):
"""Convert json string to a python object.
Args:
json_str: string, json response.
Returns:
dictionary of deserialized json string.
"""
j = {}
try:
j = json.loads(json_str)
j['json'] = True
except ValueError, e:
# This means the format from json_str is probably bad.
logger.error('Error parsing json string %s\n%s', json_str, e)
j['json'] = False
j['error'] = e
return j
def GetKeyValue(line, sep=':'):
"""Return value from a key value pair string.
Args:
line: string containing key value pair.
sep: separator of key and value.
Returns:
string: value from key value string.
"""
s = line.split(sep)
return StripPunc(s[1])
def StripPunc(s):
"""Strip puncuation from string, except for - sign.
Args:
s: string.
Returns:
string with puncuation removed.
"""
for c in string.punctuation:
if c == '-': # Could be negative number, so don't remove '-'.
continue
else:
s = s.replace(c, '')
return s.strip()
def Validate(response):
"""Determine if JSON response indicated success."""
if response.find('"success": true') > 0:
return True
else:
return False
def GetMessage(response):
"""Extract the API message from a Cloud Print API json response.
Args:
response: json response from API request.
Returns:
string: message content in json response.
"""
lines = response.split('\n')
for line in lines:
if '"message":' in line:
msg = line.split(':')
return msg[1]
return None
def ReadFile(pathname):
"""Read contents of a file and return content.
Args:
pathname: string, (path)name of file.
Returns:
string: contents of file.
"""
try:
f = open(pathname, 'rb')
try:
s = f.read()
except IOError, e:
logger('Error reading %s\n%s', pathname, e)
finally:
f.close()
return s
except IOError, e:
logger.error('Error opening %s\n%s', pathname, e)
return None
def WriteFile(file_name, data):
"""Write contents of data to a file_name.
Args:
file_name: string, (path)name of file.
data: string, contents to write to file.
Returns:
boolean: True = success, False = errors.
"""
status = True
try:
f = open(file_name, 'wb')
try:
f.write(data)
except IOError, e:
logger.error('Error writing %s\n%s', file_name, e)
status = False
finally:
f.close()
except IOError, e:
logger.error('Error opening %s\n%s', file_name, e)
status = False
return status
def Base64Encode(pathname):
"""Convert a file to a base64 encoded file.
Args:
pathname: path name of file to base64 encode..
Returns:
string, name of base64 encoded file.
For more info on data urls, see:
http://en.wikipedia.org/wiki/Data_URI_scheme
"""
b64_pathname = pathname + '.b64'
file_type = mimetypes.guess_type(pathname)[0] or 'application/octet-stream'
data = ReadFile(pathname)
# Convert binary data to base64 encoded data.
header = 'data:%s;base64,' % file_type
b64data = header + base64.b64encode(data)
if WriteFile(b64_pathname, b64data):
return b64_pathname
else:
return None
def GaiaLogin(email, password):
"""Login to gaia using HTTP post to the gaia login page.
Args:
email: string,
password: string
Returns:
dictionary of authentication tokens.
"""
tokens = {}
cookie_keys = ['SID', 'LSID', 'HSID', 'SSID']
email = email.replace('+', '%2B')
# Needs to be some random string.
galx_cookie = base64.b64encode('%s%s' % (email, time.time()))
# Simulate submitting a gaia login form.
form = ('ltmpl=login&fpui=1&rm=hide&hl=en-US&alwf=true'
'&continue=https%%3A%%2F%%2F%s%%2F%s'
'&followup=https%%3A%%2F%%2F%s%%2F%s'
'&service=%s&Email=%s&Passwd=%s&GALX=%s' % (FOLLOWUP_HOST,
FOLLOWUP_URI, FOLLOWUP_HOST, FOLLOWUP_URI, SERVICE, email,
password, galx_cookie))
login = httplib.HTTPS(GAIA_HOST, 443)
login.putrequest('POST', LOGIN_URI)
login.putheader('Host', GAIA_HOST)
login.putheader('content-type', 'application/x-www-form-urlencoded')
login.putheader('content-length', str(len(form)))
login.putheader('Cookie', 'GALX=%s' % galx_cookie)
logger.info('Sent POST content: %s', form)
login.endheaders()
logger.info('HTTP POST to https://%s%s', GAIA_HOST, LOGIN_URI)
login.send(form)
(errcode, errmsg, headers) = login.getreply()
login_output = login.getfile()
logger.info(headers)
login_output.close()
login.close()
logger.info('Login complete.')
if errcode != 302:
logger.error('Gaia HTTP post returned %d, expected 302', errcode)
logger.error('Message: %s', errmsg)
for line in str(headers).split('\r\n'):
if not line: continue
(name, content) = line.split(':', 1)
if name.lower() == 'set-cookie':
for k in cookie_keys:
if content.strip().startswith(k):
tokens[k] = GetCookie(k, content)
if not tokens:
logger.error('No cookies received, check post parameters.')
return None
else:
logger.debug('Received the following authorization tokens.')
for t in tokens:
logger.debug(t)
return tokens
def GetAuthTokens(email, password):
"""Assign login credentials from GAIA accounts service.
Args:
email: Email address of the Google account to use.
password: Cleartext password of the email account.
Returns:
dictionary containing Auth token.
"""
# First get GAIA login credentials using our GaiaLogin method.
logger.debug("GetAuthTokens")
tokens = GaiaLogin(email, password)
print tokens
if tokens:
# We still need to get the Auth token.
params = {'accountType': 'GOOGLE',
'Email': email,
'Passwd': password,
'service': SERVICE,
'source': CLIENT_NAME}
stream = urllib.urlopen(LOGIN_URL, urllib.urlencode(params))
for line in stream:
if line.strip().startswith('Auth='):
tokens['Auth'] = line.strip().replace('Auth=', '')
# All of the calls to GetUrl assume you've run something like this:
tokens = GetAuthTokens('email', 'password')
所有这些代码都直接来自google-cloud-print开发者网站。
这是输出的最后一位。
INFO:__main__:Login complete.
ERROR:__main__:Gaia HTTP post returned 404, expected 302
ERROR:__main__:Message: Not Found
ERROR:__main__:No cookies received, check post parameters.
None
提前致谢！
答案 0 :(得分：1)
替换此代码
GAIA_HOST = 'www.google.com'
LOGIN_URI = '/accounts/ServiceLoginAuth'
由此
GAIA_HOST = 'accounts.google.com'
LOGIN_URI = '/ServiceLoginAuth'
答案 1 :(得分：1)
我遇到了同样的问题。 如果您希望可以使用我刚刚发布的简单库和命令行程序。