incidentd can now handle multiple callers asking it for incident reports

Test: bit incident_test:* GtsIncidentManagerTestCases:*
Bug: 123543706
Change-Id: I9f671dd5d8b2ad139f952a23e575c2be16120459
diff --git a/cmds/incidentd/src/Broadcaster.h b/cmds/incidentd/src/Broadcaster.h
new file mode 100644
index 0000000..9330297
--- /dev/null
+++ b/cmds/incidentd/src/Broadcaster.h
@@ -0,0 +1,127 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#pragma once
+
+#include "WorkDirectory.h"
+
+#include <android/os/BnIncidentAuthListener.h>
+#include <android/os/IIncidentCompanion.h>
+#include <frameworks/base/cmds/incidentd/src/report_file.pb.h>
+
+namespace android {
+namespace os {
+namespace incidentd {
+
+using android::binder::Status;
+using android::os::BnIncidentAuthListener;
+using android::os::IIncidentCompanion;
+
+class ReportHandler;
+
+class Broadcaster : public virtual RefBase {
+public:
+    enum broadcast_status_t {
+        BROADCASTS_FINISHED = 0,
+        BROADCASTS_REPEAT = 1,
+        BROADCASTS_BACKOFF = 2
+    };
+
+    Broadcaster(const sp<WorkDirectory>& workDirectory);
+
+    void setHandler(const sp<ReportHandler>& handler);
+
+    /**
+     * Reset the beginning timestamp for broadcasts.  Call this when
+     * the system_server restarts.
+     */
+    void reset();
+
+    /**
+     * Remove the history record for the broadcasts, including pending authorizations
+     * if necessary.
+     */
+    void clearBroadcasts(const string& pkg, const string& cls, const string& id);
+    void clearPackageBroadcasts(const string& pkg);
+
+    /**
+     * Send whichever broadcasts have been pending.
+     */
+    broadcast_status_t sendBroadcasts();
+
+private:
+    struct ReportId {
+        ReportId();
+        ReportId(const ReportId& that);
+        ReportId(const string& i, const string& p, const string& c);
+        ~ReportId();
+
+        bool operator<(const ReportId& that) const;
+
+        string id;
+        string pkg;
+        string cls;
+    };
+
+    class ConsentListener : public BnIncidentAuthListener {
+      public:
+        ConsentListener(const sp<Broadcaster>& broadcaster, const ReportId& reportId);
+        virtual ~ConsentListener();
+        virtual Status onReportApproved();
+        virtual Status onReportDenied();
+      private:
+        sp<Broadcaster> mBroadcaster;
+        ReportId mId;
+    };
+    
+    struct ReportStatus {
+        ReportStatus();
+        ReportStatus(const ReportStatus& that);
+        ~ReportStatus();
+
+        bool approval_sent;
+        bool ready_sent;
+        sp<ConsentListener> listener;
+    };
+
+    sp<ReportHandler> mReportHandler;
+    sp<WorkDirectory> mWorkDirectory;
+
+    // protected by mLock
+    mutex mLock;
+    map<ReportId,ReportStatus> mHistory; // what we sent so we don't send it again
+    int64_t mLastSent;
+
+    void set_last_sent(int64_t timestamp);
+    int64_t get_last_sent();
+    void print_report_statuses() const;
+    status_t send_approval_broadcasts(const string& id, const string& pkg, const string& cls);
+    void report_approved(const ReportId& reportId);
+    void report_denied(const ReportId& reportId);
+    status_t send_report_ready_broadcasts(const string& id, const string& pkg, const string& cls);
+    status_t send_to_dropbox(const sp<ReportFile>& file, const IncidentReportArgs& args);
+    bool was_approval_sent(const string& id, const string& pkg, const string& cls);
+    void set_approval_sent(const string& id, const string& pkg, const string& cls,
+            const sp<ConsentListener>& listener);
+    bool was_ready_sent(const string& id, const string& pkg, const string& cls);
+    void set_ready_sent(const string& id, const string& pkg, const string& cls);
+    sp<IIncidentCompanion> get_incident_companion();
+};
+
+
+}  // namespace incidentd
+}  // namespace os
+}  // namespace android
+