Cloud storage: first stab at implementing cloud storage

So far there is no mechanism to actually create a repository on the
server, so this only works with the two test repositories.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

git-access.c

@@ -87,7 +87,7 @@ int credential_https_cb(git_cred **out,
 			unsigned int allowed_types,
 			void *payload)
 {
-	const char *username = "ssrftest";
+	const char *username = prefs.cloud_storage_email_encoded;
 	const char *password = prefs.cloud_storage_password ? strdup(prefs.cloud_storage_password) : strdup("");
 	return git_cred_userpass_plaintext_new(out, username, password);
 }
@@ -202,7 +202,7 @@ static struct git_repository *get_remote_repo(const char *localdir, const char *
  *    https://host/repo[branch]
  *    file://repo[branch]
  */
-static struct git_repository *is_remote_git_repository(const char *remote, const char *branch)
+static struct git_repository *is_remote_git_repository(char *remote, const char *branch)
 {
 	char c, *localdir;
 	const char *p = remote;
@@ -241,6 +241,21 @@ static struct git_repository *is_remote_git_repository(const char *remote, const
 	 * caches will sadly force that to split into multiple
 	 * individual repositories.
 	 */
+
+	/*
+	 * next we need to make sure that any encoded username
+	 * has been extracted from an https:// based URL
+	 */
+	if  (!strncmp(remote, "https://", 8)) {
+		char *at = strchr(remote, '@');
+		if (at) {
+			/* grab the part between "https://" and "@" as encoded email address
+			 * (that's our username) and move the rest of the URL forward, remembering
+			 * to copy the closing NUL as well */
+			prefs.cloud_storage_email_encoded = strndup(remote + 8, at - remote - 8);
+			memmove(remote + 8, at + 1, strlen(at + 1) + 1);
+		}
+	}
 	localdir = get_local_dir(remote, branch);
 	if (!localdir)
 		return NULL;

pref.h

@@ -92,6 +92,7 @@ struct preferences {
 	facebook_prefs_t facebook;
 	char *cloud_storage_password;
 	char *cloud_storage_email;
+	char *cloud_storage_email_encoded;
 	bool save_password_local;
 };
 enum unit_system_values {

qt-ui/mainwindow.cpp

@@ -305,6 +305,70 @@ void MainWindow::on_actionSaveAs_triggered()
 	file_save_as();
 }
 
+static int getCloudURL(QString &filename)
+{
+	QString email = QString(prefs.cloud_storage_email);
+	email.replace("@", "_at_");
+	email.replace(QRegularExpression("[^a-zA-Z0-9._+-]"), "");
+	if (email.isEmpty() || same_string(prefs.cloud_storage_password, ""))
+		return report_error("Please configure Cloud storage email and password in the preferences");
+	if (email != prefs.cloud_storage_email_encoded) {
+		free(prefs.cloud_storage_email_encoded);
+		prefs.cloud_storage_email_encoded = strdup(qPrintable(email));
+	}
+	filename = QString("https://cloud.subsurface-divelog.org/git/%1[%1]").arg(email);
+	return 0;
+}
+
+void MainWindow::on_actionCloudstorageopen_triggered()
+{
+	if (!okToClose(tr("Please save or cancel the current dive edit before opening a new file.")))
+		return;
+
+	QString filename;
+	if (getCloudURL(filename)) {
+		getNotificationWidget()->showNotification(get_error_string(), KMessageWidget::Error);
+		return;
+	}
+	qDebug() << filename;
+
+	closeCurrentFile();
+
+	int error;
+
+	QByteArray fileNamePtr = QFile::encodeName(filename);
+	error = parse_file(fileNamePtr.data());
+	if (!error) {
+		set_filename(fileNamePtr.data(), true);
+		setTitle(MWTF_FILENAME);
+	}
+	getNotificationWidget()->hideNotification();
+	process_dives(false, false);
+	refreshDisplay();
+	ui.actionAutoGroup->setChecked(autogroup);
+}
+
+void MainWindow::on_actionCloudstoragesave_triggered()
+{
+	QString filename;
+	if (getCloudURL(filename)) {
+		getNotificationWidget()->showNotification(get_error_string(), KMessageWidget::Error);
+		return;
+	}
+	qDebug() << filename;
+	if (information()->isEditing())
+		information()->acceptChanges();
+
+	if (save_dives(filename.toUtf8().data())) {
+		getNotificationWidget()->showNotification(get_error_string(), KMessageWidget::Error);
+		return;
+	}
+	getNotificationWidget()->showNotification(get_error_string(), KMessageWidget::Error);
+	set_filename(filename.toUtf8().data(), true);
+	setTitle(MWTF_FILENAME);
+	mark_divelist_changed(false);
+}
+
 void learnImageDirs(QStringList dirnames)
 {
 	QList<QFuture<void> > futures;

qt-ui/mainwindow.h

@@ -103,6 +103,8 @@ slots:
 	void on_actionSave_triggered();
 	void on_actionSaveAs_triggered();
 	void on_actionClose_triggered();
+	void on_actionCloudstorageopen_triggered();
+	void on_actionCloudstoragesave_triggered();
 	void on_actionPrint_triggered();
 	void on_actionPreferences_triggered();
 	void on_actionQuit_triggered();

qt-ui/mainwindow.ui

@@ -62,7 +62,7 @@
      <x>0</x>
      <y>0</y>
      <width>861</width>
-     <height>22</height>
+     <height>29</height>
     </rect>
    </property>
    <widget class="QMenu" name="menuFile">
@@ -74,6 +74,9 @@
     <addaction name="actionSave"/>
     <addaction name="actionSaveAs"/>
     <addaction name="separator"/>
+    <addaction name="actionCloudstorageopen"/>
+    <addaction name="actionCloudstoragesave"/>
+    <addaction name="separator"/>
     <addaction name="actionClose"/>
     <addaction name="actionExport"/>
     <addaction name="actionPrint"/>
@@ -81,7 +84,6 @@
     <addaction name="separator"/>
     <addaction name="actionHash_images"/>
     <addaction name="actionConfigure_Dive_Computer"/>
-    <addaction name="separator"/>
     <addaction name="actionRecent1"/>
     <addaction name="actionRecent2"/>
     <addaction name="actionRecent3"/>
@@ -714,6 +716,16 @@
     <string>&amp;Find moved images</string>
    </property>
   </action>
+  <action name="actionCloudstorageopen">
+   <property name="text">
+    <string>Cloud storage open</string>
+   </property>
+  </action>
+  <action name="actionCloudstoragesave">
+   <property name="text">
+    <string>Cloud storage save</string>
+   </property>
+  </action>
  </widget>
  <customwidgets>
   <customwidget>