Emit error signal when login fails
[situare] / src / facebookservice / facebookauthentication.cpp
1 /*
2    Situare - A location system for Facebook
3    Copyright (C) 2010  Ixonos Plc. Authors:
4
5        Ville Tiensuu - ville.tiensuu@ixonos.com
6        Kaj Wallin - kaj.wallin@ixonos.com
7        Henri Lampela - henri.lampela@ixonos.com
8
9    Situare is free software; you can redistribute it and/or
10    modify it under the terms of the GNU General Public License
11    version 2 as published by the Free Software Foundation.
12
13    Situare is distributed in the hope that it will be useful,
14    but WITHOUT ANY WARRANTY; without even the implied warranty of
15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16    GNU General Public License for more details.
17
18    You should have received a copy of the GNU General Public License
19    along with Situare; if not, write to the Free Software
20    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
21    USA.
22 */
23
24 #include <qjson/parser.h>
25
26 #include <QtDebug>
27 #include <QDateTime>
28 #include <QNetworkReply>
29 #include <QSettings>
30 #include <QStringList>
31 #include <QVariantMap>
32 #include <QWebView>
33
34 #ifdef Q_WS_MAEMO_5
35 #include <QMaemo5InformationBox>
36 #endif // Q_WS_MAEMO_5
37
38 #include "common.h"
39 #include "../error.h"
40 #include "network/networkcookiejar.h"
41 #include "situareservice/situarecommon.h"
42 #include "ui/mainwindow.h"
43
44 #include "facebookauthentication.h"
45
46 const QString FB_LOGIN_SUCCESS_URL = "http://www.facebook.com/connect/login_success.html";
47 const QString FB_LOGIN_URL = "https://www.facebook.com/login.php";
48
49 FacebookAuthentication::FacebookAuthentication(MainWindow *mainWindow, QObject *parent)
50     : QObject(parent),
51       m_browser(0),
52       m_mainWindow(mainWindow)
53 {
54     qDebug() << __PRETTY_FUNCTION__;
55 }
56
57 void FacebookAuthentication::browserDestroyed()
58 {
59     qWarning() << __PRETTY_FUNCTION__;
60
61     m_mainWindow->toggleProgressIndicator(false);
62     m_browser = 0;
63 }
64
65 void FacebookAuthentication::clearAccountInformation(bool keepUsername)
66 {
67     qDebug() << __PRETTY_FUNCTION__;
68
69     ///< @todo (HIGH) clear session from SituareService
70     QSettings settings(SETTINGS_ORGANIZATION_NAME, SETTINGS_APPLICATION_NAME);
71
72     if(!keepUsername) {
73         settings.remove(SETTINGS_AUTOMATIC_UPDATE_ENABLED);
74         settings.remove(SETTINGS_AUTOMATIC_UPDATE_INTERVAL);
75     }
76
77     settings.remove(USER_UNSEND_MESSAGE);
78     settings.remove(USER_UNSEND_MESSAGE_PUBLISH);
79
80     NetworkCookieJar::clearCookiesSetting();
81 }
82
83 void FacebookAuthentication::destroyLogin()
84 {
85     qWarning() << __PRETTY_FUNCTION__;
86
87     m_mainWindow->destroyLoginDialog();
88     m_browser->deleteLater();
89 }
90
91 void FacebookAuthentication::login()
92 {
93     qWarning() << __PRETTY_FUNCTION__;
94
95     if (!m_browser) {
96         m_browser = new QWebView(m_mainWindow);
97
98         if (m_browser) {
99             m_browser->page()->networkAccessManager()->setCookieJar(new NetworkCookieJar());
100
101             connect(m_browser, SIGNAL(urlChanged(QUrl)),
102                     this, SLOT(urlChanged(QUrl)));
103
104             connect(m_browser, SIGNAL(destroyed(QObject*)),
105                     this, SLOT(browserDestroyed()));
106
107             connect(m_browser->page()->networkAccessManager(), SIGNAL(finished(QNetworkReply*)),
108                     this, SLOT(networkReplyHandler(QNetworkReply*)));
109         }
110     }
111
112     if (m_browser) {
113         QString url = FB_LOGIN_URL + "?";
114         url.append("api_key=" + API_KEY +"&");
115         url.append("display=touch&");
116         url.append("fbconnect=1&");
117         url.append("next=" + FB_LOGIN_SUCCESS_URL + "&");
118         url.append("return_session=1&");
119         url.append("session_version=3&");
120         url.append("v=1.0&");
121         url.append("req_perms=publish_stream");
122
123         m_browser->load(QUrl(url));
124
125         m_mainWindow->toggleProgressIndicator(true);
126     }
127 }
128
129 void FacebookAuthentication::networkReplyHandler(QNetworkReply *reply)
130 {
131     qWarning() <<__PRETTY_FUNCTION__;
132
133     if ((reply->error() != QNetworkReply::NoError)
134         && (reply->error() != QNetworkReply::OperationCanceledError)) {
135
136         qCritical() << __PRETTY_FUNCTION__ << "error:" << reply->error() << reply->errorString();
137         emit error(ErrorContext::NETWORK, reply->error());
138         destroyLogin();
139     }
140 }
141
142 QString FacebookAuthentication::parseSession(const QUrl &url)
143 {
144     qWarning() << __PRETTY_FUNCTION__;
145
146     const QString BEGIN("session={");
147     const QString END("}");
148
149     QString urlString = url.toString();
150
151     int begin = urlString.indexOf(BEGIN);
152     int end = urlString.indexOf(END, begin);
153
154     if ((begin > -1) && (end > -1))
155         return urlString.mid(begin, end - begin + 1);
156     else
157         return QString();
158 }
159
160 void FacebookAuthentication::urlChanged(const QUrl &url)
161 {
162     qWarning() << __PRETTY_FUNCTION__ << url.toString();
163
164     /*
165       Redirects:
166         * Login with cookie failed:
167             1) http://m.facebook.com/login.php?api_key=cf77865a5070f2c2ba3b52cbf3371579&cancel_url=http://www.facebook.com/connect/login_failure.html&display=touch&fbconnect=1&next=http://www.facebook.com/connect/uiserver.php?app_id=286811277465&next=http%3A%2F%2Fwww.facebook.com%2Fconnect%2Flogin_success.html&display=touch&cancel_url=http%3A%2F%2Fwww.facebook.com%2Fconnect%2Flogin_failure.html&perms=publish_stream&return_session=1&session_version=3&fbconnect=1&canvas=0&legacy_return=1&method=permissions.request&return_session=1&session_version=3&v=1.0&req_perms=publish_stream&app_id=286811277465&refsrc=http://www.facebook.com/login.php&fbb=ra985c5e9
168
169         * Login with cookie succeeded:
170             1) http://www.facebook.com/connect/uiserver.php?app_id=286811277465&next=http://www.facebook.com/connect/login_success.html&display=touch&cancel_url=http://www.facebook.com/connect/login_failure.html&perms=publish_stream&return_session=1&session_version=3&fbconnect=1&canvas=0&legacy_return=1&method=permissions.request&session={"session_key":"2.iHXi5fLKlHktva2R71xSAw__.3600.1289228400-100001006647973","uid":100001006647973,"expires":1289228400,"secret":"q4_Hn5qRdxnVT_qh3ztv5w__","sig":"c9d29ca857bacec48b952e7d2826a3ca"}&fbb=rb28f24e5
171             2) http://www.facebook.com/connect/login_success.html?perms=publish_stream&selected_profiles=100001006647973&session={"session_key":"2.iHXi5fLKlHktva2R71xSAw__.3600.1289228400-100001006647973","uid":"100001006647973","expires":1289228400,"secret":"q4_Hn5qRdxnVT_qh3ztv5w__","access_token":"286811277465|2.iHXi5fLKlHktva2R71xSAw__.3600.1289228400-100001006647973|LVTHGW82A98SGvv6Fl43DlCrFT0","sig":"8edd8d611047bcd162abbe9983b25a56"}
172      */
173
174     if (!url.toString().contains("session={")) {
175         // url parameter doesn't contain session data, so login with cookies failed
176         qWarning() << __PRETTY_FUNCTION__ << "working credentials required";
177         m_mainWindow->buildLoginDialog(m_browser);
178     } else if (url.toString().startsWith(FB_LOGIN_SUCCESS_URL)) {
179         // login succeeded
180         const QString session = parseSession(url);
181         qWarning() << __PRETTY_FUNCTION__ << "login finished, parsed session:" << session;
182         if (!session.isEmpty()) {
183             destroyLogin();
184             emit loggedIn(session);
185         }
186     }
187     else {
188         qWarning() << __PRETTY_FUNCTION__ << "credentials accepted, getting the access_token";
189     }
190 }