Save crash logs on a server

If the browser crashes, save the crash logs on a remote server.

Change-Id: I2758c11909d6d85d3472f5254e54dd9cbece728c

1 files changed, 252 insertions, 0 deletions

diff --git a/src/com/android/browser/CrashLogExceptionHandler.java b/src/com/android/browser/CrashLogExceptionHandler.java
new file mode 100644
index 00000000..92075707
--- /dev/null
+++ b/src/com/android/browser/CrashLogExceptionHandler.java
@@ -0,0 +1,252 @@
+/*
+ * Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package com.android.browser;
+
+import android.app.Activity;
+import android.content.Context;
+import android.os.Build;
+import android.os.Build.VERSION;
+import android.os.SystemClock;
+import android.net.http.AndroidHttpClient;
+import android.util.Log;
+
+import org.codeaurora.swe.BrowserCommandLine;
+
+import org.apache.http.HttpEntity;
+import org.apache.http.HttpResponse;
+import org.apache.http.client.methods.HttpPost;
+import org.apache.http.entity.StringEntity;
+import org.apache.http.client.ClientProtocolException;
+
+import org.json.JSONArray;
+import org.json.JSONObject;
+import org.json.JSONException;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+import java.lang.Integer;
+import java.lang.StringBuilder;
+import java.lang.System;
+import java.lang.Thread.UncaughtExceptionHandler;
+import java.util.Calendar;
+
+public class CrashLogExceptionHandler implements Thread.UncaughtExceptionHandler {
+
+    private static final String CRASH_LOG_FILE = "crash.log";
+    private static final String CRASH_LOG_SERVER_CMD = "crash-log-server";
+    private static final String CRASH_LOG_MAX_FILE_SIZE_CMD = "crash-log-max-file-size";
+
+    private final static String LOGTAG = "CrashLog";
+
+    private Context mAppContext = null;
+
+    private UncaughtExceptionHandler mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();
+
+    private String mLogServer = new String();
+
+    private boolean mOverrideHandler = false;
+
+    private int mMaxLogFileSize = 1024 * 1024;
+
+    public CrashLogExceptionHandler(Context ctx) {
+        mAppContext = ctx;
+        BrowserCommandLine cl = new BrowserCommandLine();
+        if (cl.hasSwitch(CRASH_LOG_SERVER_CMD)) {
+            mLogServer = cl.getSwitchValue(CRASH_LOG_SERVER_CMD);
+            if (mLogServer != null) {
+                uploadPastCrashLog();
+                mOverrideHandler = true;
+            }
+        }
+
+        try {
+            int size = Integer.parseInt(cl.getSwitchValue(CRASH_LOG_MAX_FILE_SIZE_CMD,
+                                                      Integer.toString(mMaxLogFileSize)));
+            mMaxLogFileSize = size;
+        } catch (NumberFormatException nfe) {
+            Log.e(LOGTAG,"Max log file size is not configured properly. Using default: "
+                  + mMaxLogFileSize);
+        }
+
+    }
+
+    private void saveCrashLog(String crashLog) {
+        // Check if log file exists and it's current size
+        try {
+            File file = new File(mAppContext.getFilesDir(), CRASH_LOG_FILE);
+            if (file.exists()) {
+                if (file.length() > mMaxLogFileSize) {
+                    Log.e(LOGTAG,"CRASH Log file size(" + file.length()
+                          + ") exceeded max log file size("
+                          + mMaxLogFileSize + ")");
+                    return;
+                }
+            }
+        } catch (NullPointerException npe) {
+            Log.e(LOGTAG,"Exception while checking file size: " + npe);
+        }
+
+        FileOutputStream crashLogFile = null;
+        try {
+            crashLogFile = mAppContext.openFileOutput(CRASH_LOG_FILE, Context.MODE_APPEND);
+            crashLogFile.write(crashLog.getBytes());
+        } catch(IOException ioe) {
+            Log.e(LOGTAG,"Exception while writing file: " + ioe);
+        } finally {
+            if (crashLogFile != null) {
+                try {
+                    crashLogFile.close();
+                } catch (IOException ignore) {
+                }
+            }
+        }
+    }
+
+    private void uploadPastCrashLog() {
+        FileInputStream crashLogFile = null;
+        BufferedReader reader = null;
+        try {
+            crashLogFile = mAppContext.openFileInput(CRASH_LOG_FILE);
+
+            reader = new BufferedReader(new InputStreamReader(crashLogFile));
+            StringBuilder crashLog = new StringBuilder();
+            String line = reader.readLine();
+            if (line != null) {
+                crashLog.append(line);
+            }
+
+            // Typically there's only one line (JSON string) in the crash
+            // log file. This loop would not be executed.
+            while ((line = reader.readLine()) != null) {
+                crashLog.append("\n").append(line);
+            }
+
+            uploadCrashLog(crashLog.toString(), 3000);
+        } catch(FileNotFoundException fnfe) {
+            Log.v(LOGTAG,"No previous crash found");
+        } catch(IOException ioe) {
+            Log.e(LOGTAG,"Exception while reading crash file: " + ioe);
+        } finally {
+            if (crashLogFile != null) {
+                try {
+                    crashLogFile.close();
+                } catch (IOException ignore) {
+                }
+            }
+            if (reader != null) {
+                try {
+                    reader.close();
+                } catch (IOException ignore) {
+                }
+            }
+        }
+    }
+
+    private void uploadCrashLog(String data, int after) {
+        final String crashLog = data;
+        final int waitFor = after;
+        new Thread(new Runnable() {
+                public void run(){
+                    try {
+                        SystemClock.sleep(waitFor);
+                        AndroidHttpClient httpClient = AndroidHttpClient.newInstance("Android");;
+                        HttpPost httpPost = new HttpPost(mLogServer);
+                        HttpEntity se = new StringEntity(crashLog);
+                        httpPost.setEntity(se);
+                        HttpResponse response = httpClient.execute(httpPost);
+
+                        File crashLogFile = new File(mAppContext.getFilesDir(),
+                                                     CRASH_LOG_FILE);
+                        if (crashLogFile != null) {
+                            crashLogFile.delete();
+                        } else {
+                            Log.e(LOGTAG,"crash log file could not be opened for deletion");
+                        }
+                    } catch (ClientProtocolException pe) {
+                        Log.e(LOGTAG,"Exception while sending http post: " + pe);
+                    } catch (IOException ioe1) {
+                        Log.e(LOGTAG,"Exception while sending http post: " + ioe1);
+                    }
+                }
+            }).start();
+    }
+
+    public void uncaughtException(Thread t, Throwable e) {
+        if (!mOverrideHandler) {
+            mDefaultHandler.uncaughtException(t, e);
+            return;
+        }
+
+        String crashLog = new String();
+
+        try {
+            Calendar calendar = Calendar.getInstance();
+            JSONObject jsonStackObj = new JSONObject();
+            String date = calendar.getTime().toString();
+            String aboutSWE = mAppContext.getResources().getString(R.string.about_text);
+            String sweVer = aboutSWE.substring(aboutSWE.indexOf("Hash"),
+                                               aboutSWE.length());
+
+            jsonStackObj.put("date", date);
+            jsonStackObj.put("device", android.os.Build.MODEL);
+            jsonStackObj.put("android-ver", android.os.Build.VERSION.RELEASE);
+            jsonStackObj.put("browser-ver", sweVer);
+            jsonStackObj.put("thread", t.toString());
+            jsonStackObj.put("cause", e.getCause());
+
+            Throwable cause = e.getCause();
+            if(cause != null) {
+                StackTraceElement[] arr = cause.getStackTrace();
+                JSONArray jsonStack = new JSONArray(arr);
+                jsonStackObj.put("stack", jsonStack);
+            }
+
+            JSONObject jsonMainObj = new JSONObject();
+            jsonMainObj.put("backtraces", jsonStackObj);
+
+            Log.e(LOGTAG, "Exception: " + jsonMainObj.toString(4));
+            crashLog = jsonMainObj.toString();
+
+        } catch (JSONException je) {
+            Log.e(LOGTAG, "Failed in JSON encoding: " + je);
+        }
+
+        saveCrashLog(crashLog);
+
+        uploadCrashLog(crashLog, 0);
+
+        mDefaultHandler.uncaughtException(t, e);
+    }
+}