Picasa command line uploader with OAuth2 support

I am a Picasa user and I’m not very happy with this. Application is terrible (and works under Wine badly) and site is not very convinient too. But I use them since storing photos in Picasa is obvious solution for any Google account holder. For a long time I used some command line uploader I found somewhere on the net, but since 2015 Google dropped support of ClientLogin/OAuth1 in their services, so all of the command line tools (including even GoogleCL created by Google themself) stopped from working.

This is why I created my own solution. Here is complete source code (Python 2.7) with comments. The program takes album name and path to a directory with *.jpg files as command line arguments. Then it created album and upload all of the jpg files there.

Bad thing is that the OAuth2 needs manual steps for user authentication. You need to target your browser to the Google url provided by the script, perform login there and allow access to your Google Photos account.

import sys, os, json
from xml.etree import ElementTree

import httplib2
from oauth2client import client
from oauth2client.client import flow_from_clientsecrets

def handle_http_status(h,c):
	if h["status"][0] != "2":  # checking that status code is 200..299
		print "Error occured! Response from Google:"
		print h
		print c
		exit(1)

# parsing command line
if len(sys.argv) < 3:
	print "Usage: upload.py \"Album Name\" /path/to/directory/with/images"
	exit(99)

album_title = sys.argv[1]
folder = sys.argv[2]

print "Creating album \"%s\" from the folder %s" % (album_title, folder)

# Generating request for Picasa (shortened example from https://developers.google.com/picasa-web/docs/2.0/developers_guide_protocol)
request = (
"<entry xmlns='http://www.w3.org/2005/Atom' xmlns:media='http://search.yahoo.com/mrss/' xmlns:gphoto='http://schemas.google.com/photos/2007'>"
"  <title type='text'>%s</title>"
"  <gphoto:access>private</gphoto:access>"
"  <category scheme='http://schemas.google.com/g/2005#kind' term='http://schemas.google.com/photos/2007#album' />"
"</entry>") % album_title

# performing semiautomatic authentication in Google

flow = client.flow_from_clientsecrets('client_secret.json',
                                      scope='https://www.googleapis.com/auth/photos https://www.googleapis.com/auth/userinfo.profile',
                                      redirect_uri='urn:ietf:wg:oauth:2.0:oob')

auth_uri = flow.step1_get_authorize_url()
print "Please visit the following URL and authenticate:"
print
print auth_uri
print
auth_code = raw_input('Enter the auth code: ')
credentials = flow.step2_exchange(auth_code)

http = credentials.authorize(httplib2.Http())

h,c = http.request("https://www.googleapis.com/oauth2/v1/userinfo", "GET");
handle_http_status(h, c)
user_id = json.loads(c)["id"].encode("ascii")  # it is unicode somehow
user_url = "https://picasaweb.google.com/data/feed/api/user/" + user_id

# post our album creation request

h,c = http.request(user_url, "POST", body = request, headers = { 'content-type':'application/atom+xml; charset=UTF-8' } )
handle_http_status(h, c)

# obtained content is XML, we need to obtain album_id from it

album = doc = ElementTree.fromstring(c)
album_id = album.find("{http://schemas.google.com/photos/2007}id").text
album_url = user_url + "/albumid/" + album_id

# Now album is created and it's edit url is known
# Let's iterate images from the specified folder and upload them

for f in os.listdir(folder):
	if f.lower().endswith(".jpg"): 
		data = open(os.path.join(folder, f), "rb").read()
		size = len(data)
		sys.stdout.write("Uploading %s (%d bytes)..." % (f, size))
		sys.stdout.flush()
		h,c = http.request(album_url, "POST", body = data, headers = { 'Content-Type': 'image/jpeg', 'Content-Length': len(data), 'Slug': f })
		handle_http_status(h, c)
		print "Success!"
	else:
		continue

print "Album uploaded"

Written on February 2, 2015