The document discusses connecting mobile apps to Drupal sites through web services and custom code. It describes using the Services module or custom code to expose Drupal functionality through REST or HTTP calls. It also provides examples of connecting Android and iOS apps to Drupal and summarizing content to display in mobile apps. Key resources like DrupalCloud and drupal-ios-sdk are mentioned.

1. DRUPAL, ANDROID
AND IPHONE
Badiu Alexandru
Fratu Mihai
Drupalcamp Bucharest 2011

2. ABOUT US
• We work at Adulmec
• We do fine products such as Dealfever, Urbo and
Adulmec
• We sometime build mobile apps
• Ataxi, Urbo, games and soon the Adulmec app
Drupalcamp Bucharest 2011

3. CONNECTI
• You expose some functionality as
REST or some sort of web service
• Your mobile application makes HTTP
calls
• Authentication? Access control?
Drupalcamp Bucharest 2011

4. CONNECTI
• Two ways
• Use the Services module
• Use a custom solution
• Depends on your requirements
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5. FOR
• Adulmec Coupon Redeem - custom
• Urbo - Services
Drupalcamp Bucharest 2011

6. CUSTOM
• Write php pages
• Without Drupal
• Lightweight Drupal
• Full Drupal
• Output XML or JSON
• Make HTTP call and parse result
Drupalcamp Bucharest 2011

7. CUSTOM
• Latest news app
• Shows a list of the latest posts on a
site
• Click on a post, go to the site
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8. <?php
CUSTOM
chdir('../');
require_once './includes/bootstrap.inc';
drupal_bootstrap(DRUPAL_BOOTSTRAP_FULL);
$response = array();
$result = db_query_range('SELECT nid, title FROM {node} WHERE type="story" ORDER
BY created DESC', 0, 10);
while ($row = db_fetch_object($result)) {
$response[] = array('title' => $row->title, 'url' => 'node/' . $row->nid);
}
drupal_json($response);
Drupalcamp Bucharest 2011

9. CUSTOM
[
{
"title":"Illum Verto Fere Esse Secundum C
ui Zelus Luctus",
"url":"node/2"
},
{
"title":"Uxor Eu Camur Voco Refero Fere",
"url":"node/7"
},
]
Drupalcamp Bucharest 2011

10. CUSTOM
URI uri = new URI("http://0001.ro/alex/drupalcamp/services/pages/list.php");
HttpClient client = new DefaultHttpClient();
HttpGet request = new HttpGet(uri);
HttpResponse response = client.execute(request);
InputStream is = response.getEntity().getContent();
BufferedReader br = new BufferedReader(new InputStreamReader(is));
String result = br.readLine();
adapter.clear();
JSONArray r = new JSONArray(result);
for (int i = 0; i < r.length(); i++) {
JSONObject jitem = r.getJSONObject(i);
SubtitleItem item = new SubtitleItem(jitem.getString("title"),
jitem.getString("url"));
adapter.add(item);
}
adapter.notifyDataSetChanged();
Drupalcamp Bucharest 2011

11. SERVICES
• Creates web services out of Drupal
functions
• Concepts: service and server
• Autenthication plugins
• Pluggable
Drupalcamp Bucharest 2011

12. SERVICES
• Out of the box: Comments, Files,
Menu, Node, Search, System,
Taxonomy, User, Views
• XMLRPC Server
• Key based authentication
Drupalcamp Bucharest 2011

13. SERVICES
• We use XMLRPC in iOS apps
• We use JSON in Android apps
• json_server
• Demo with standard json parser
• GSON and Jackson
• Streaming and mapping
Drupalcamp Bucharest 2011

14. SERVICES
• Drupalcloud for Android
• Custom code for iOS
• drupal-ios-sdk
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15. SERVICES
• Key auth allows you to grant access
just to some specific apps
• Fine-grained: user authentication
• Session id is used in every call
• system.connect
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16. SERVICES
• hash - sha of domain, time and
nonce
• domain
• timestamp
• nonce
• session
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17. SERVICES
• call system.connect - get session
• use session in every call
• call user.login - get new session
• use new session in every call
• call user.logout
• call system.connect - get session
• repeat
Drupalcamp Bucharest 2011

18. SERVICES
• What about saving session across app
launches?
• Save session and timestamp to prefs
after login or connect
• At launch check that the saved session
has not expired
• If not, use that session
• Otherwise system.connect
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19. WTFS
• userLogin returns new session
• no user uid
• no way to set it in the client
• we create our own
• json_server does not work
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20. public void setSessionId(String sessionId) {
SharedPreferences auth = mCtx.getSharedPreferences(mPREFS_AUTH, 0);
SharedPreferences.Editor editor = auth.edit();
editor.putString("sessionid", sessionId);
editor.putLong("sessionid_timestamp", new Date().getTime() / 100);
editor.commit();
}
Drupalcamp Bucharest 2011

21. WTFS
• Services is inconsistent or weird
• You’re already logged in as...
• Error is false or true?
• Where’s the error?
{ "#error": false, "#data": { "#error": true, "#message": "Wrong
username or password." } }
{ "#error": false, "#data": { "sessid":
"02fd1c8a9d37ed9709ba154320340e8a", "user": { "uid": "1", ...
Drupalcamp Bucharest 2011

22. DRUPALCL
client = new JSONServerClient(this,
getString(R.string.sharedpreferences_name),
getString(R.string.SERVER), getString(R.string.API_KEY),
getString(R.string.DOMAIN), getString(R.string.ALGORITHM),
Long.parseLong(getString(R.string.SESSION_LIFETIME)));
<string name="app_name">AndroidDemo</string>
<string name="sharedpreferences_name">AndroidDemoPrefs</string>
<string name="SERVER">http://0001.ro/alex/drupalcamp/services/
services/json</string>
<string name="API_KEY">85255b11393bc0ee19d29758a043a698</string>
<string name="DOMAIN">http://mobile.0001.ro</string>
<string name="ALGORITHM">HmacSHA256</string>
<string name="SESSION.LIFETIME">1209600</string>
Drupalcamp Bucharest 2011

23. DRUPALCL
• Has some methods built in
• Just parse the response
• For other methods do client.call()
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24. DRUPALCL
String result = client.userLogin(userText.getText().toString(),
passText.getText().toString());
JSONObject r = new JSONObject(result).getJSONObject("#data");
boolean error;
try {
error = d.getBoolean("#error");
}
catch (Exception e) {
error = false;
}
if (!error) {
String session = d.getString("sessid");
client.setSessionId(session);
}
else {
finish();
}
Drupalcamp Bucharest 2011

25. DRUPALCL
try {
JSONObject node = new JSONObject();
node.put("type", "story");
node.put("title", title.getText().toString());
node.put("body", body.getText().toString());
BasicNameValuePair[] params = new BasicNameValuePair[1];
params[0] = new BasicNameValuePair("node", node.toString());
String result = client.call("node.save", params);
}
catch (Exception e) {
Log.v("drupalapp", e.toString());
e.printStackTrace();
}
Drupalcamp Bucharest 2011

26. RESOURCE
• https://github.com/skyred/
DrupalCloud
• https://github.com/workhabitinc/
drupal-ios-sdk
• http://commons.apache.org/codec/
• http://drupal.org/project/services
• http://drupal.org/project/
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27. THANK
andu@ctrlz.ro
http://ctrlz.ro
Drupalcamp Bucharest 2011