back up messages
This commit is contained in:
Paul Akhamiogu
parent
b74a511a5e
commit
7f32115afe
7 changed files with 417 additions and 2 deletions
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@ -0,0 +1,44 @@
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package com.simplemobiletools.smsmessenger.helpers
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import com.google.gson.JsonArray
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import com.google.gson.JsonNull
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import com.google.gson.JsonObject
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import com.google.gson.JsonPrimitive
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import com.google.gson.stream.JsonWriter
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class JsonObjectWriter(private val writer: JsonWriter) {
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fun dump(obj: JsonObject) {
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writer.beginObject()
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for (key in obj.keySet()) {
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writer.name(key)
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val keyObj = obj.get(key)
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dump(keyObj)
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}
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writer.endObject()
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}
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private fun dump(arr: JsonArray) {
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writer.beginArray()
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for (i in 0 until arr.size()) {
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dump(arr.get(i))
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}
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writer.endArray()
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}
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private fun dump(obj: Any) {
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when (obj) {
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is JsonNull -> writer.nullValue()
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is JsonPrimitive -> {
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when{
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obj.isString -> writer.value(obj.asString)
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obj.isBoolean -> writer.value(obj.asNumber)
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obj.isNumber -> writer.value(obj.asBoolean)
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obj.isNumber -> writer.value(obj.asBoolean)
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}
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}
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is JsonArray -> dump(obj)
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is JsonObject -> dump(obj)
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}
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}
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}
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@ -0,0 +1,84 @@
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package com.simplemobiletools.smsmessenger.helpers
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import android.content.Context
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import com.google.gson.stream.JsonWriter
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import com.simplemobiletools.commons.helpers.ensureBackgroundThread
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import com.simplemobiletools.smsmessenger.extensions.config
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import com.simplemobiletools.smsmessenger.extensions.getConversationIds
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import java.io.OutputStream
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class MessagesExporter(private val context: Context) {
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enum class ExportResult {
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EXPORT_FAIL, EXPORT_OK
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}
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private val config = context.config
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private val messageReader = MessagesReader(context)
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fun exportMessages(
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outputStream: OutputStream?,
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callback: (result: ExportResult) -> Unit,
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) {
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ensureBackgroundThread {
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if (outputStream == null) {
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callback.invoke(ExportResult.EXPORT_FAIL)
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return@ensureBackgroundThread
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}
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/*
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* We should have json in this format
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* {
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* "threadId" : {
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* "threadId": ""
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* "sms": [{ smses }],
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* "mms": [{ mmses }]
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* }
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* }
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*
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* */
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val writer = JsonWriter(outputStream.bufferedWriter())
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writer.use {
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try {
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var written = 0
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writer.beginObject()
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val conversationIds = context.getConversationIds()
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for(threadId in conversationIds){
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writer.name(threadId.toString())
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writer.beginObject()
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writer.name("threadId")
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writer.value(threadId)
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if(config.exportSms){
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writer.name("sms")
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writer.beginArray()
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//write all sms
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messageReader.forEachSms(threadId){
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JsonObjectWriter(writer).dump(it)
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written++
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}
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writer.endArray()
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}
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if(config.exportMms){
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writer.name("mms")
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writer.beginArray()
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//write all mms
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messageReader.forEachMms(threadId){
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JsonObjectWriter(writer).dump(it)
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written++
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}
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writer.endArray()
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}
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writer.endObject()
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}
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writer.endObject()
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callback.invoke(ExportResult.EXPORT_OK)
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} catch (e: Exception) {
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callback.invoke(ExportResult.EXPORT_FAIL)
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}
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}
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}
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}
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}
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@ -0,0 +1,143 @@
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package com.simplemobiletools.smsmessenger.helpers
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import android.annotation.SuppressLint
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import android.content.Context
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import android.net.Uri
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import android.provider.Telephony
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import android.util.Base64
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import android.util.Log
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import com.google.android.mms.pdu_alt.PduHeaders
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import com.google.gson.JsonArray
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import com.google.gson.JsonObject
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import com.simplemobiletools.commons.extensions.getIntValue
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import com.simplemobiletools.commons.extensions.getStringValue
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import com.simplemobiletools.commons.extensions.queryCursor
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import com.simplemobiletools.commons.helpers.isQPlus
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import com.simplemobiletools.smsmessenger.extensions.optLong
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import com.simplemobiletools.smsmessenger.extensions.optString
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import com.simplemobiletools.smsmessenger.extensions.rowsToJson
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import java.io.IOException
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import java.io.InputStream
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class MessagesReader(private val context: Context) {
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companion object {
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private const val TAG = "MessagesReader"
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private const val MMS_CONTENT = "mms_content"
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}
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fun forEachSms(threadId: Long, block: (JsonObject) -> Unit) {
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forEachThreadMessage(Telephony.Sms.CONTENT_URI, threadId, block)
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}
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fun forEachMms(threadId: Long, includeAttachment: Boolean = true, block: (JsonObject) -> Unit) {
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forEachThreadMessage(Telephony.Mms.CONTENT_URI, threadId) { obj ->
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if (includeAttachment) {
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obj.add("parts", getParts(obj.getAsJsonPrimitive("_id").asLong))
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}
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obj.add(Telephony.CanonicalAddressesColumns.ADDRESS, getMMSAddresses(obj.getAsJsonPrimitive("_id").asLong))
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block(obj)
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}
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}
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private fun forEachThreadMessage(contentUri: Uri, threadId: Long, block: (JsonObject) -> Unit) {
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val selection = "${Telephony.Sms.THREAD_ID} = ?"
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val selectionArgs = arrayOf(threadId.toString())
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context.queryCursor(contentUri, null, selection, selectionArgs) { cursor ->
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val json = cursor.rowsToJson()
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forceMillisDate(json, "date")
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forceMillisDate(json, "date_sent")
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block(json)
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}
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}
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private fun forceMillisDate(message: JsonObject, field: String) {
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/* sometimes the sms are in millis and the mms in secs... */
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if (message.get(field).isJsonPrimitive) {
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val value = message.get(field).optLong
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if (value != null && value != 0L && value < 500000000000L) { // 500000000000 = Tuesday, 5 November 1985 00:53:20 GMT
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message.addProperty(field, value * 1000)
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}
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}
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}
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@SuppressLint("NewApi")
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private fun getParts(mmsId: Long): JsonArray {
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val jsonArray = JsonArray()
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val uri = if (isQPlus()) {
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Telephony.Mms.Part.CONTENT_URI
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} else {
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Uri.parse("content://mms/part")
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}
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val selection = "${Telephony.Mms.Part.MSG_ID}=$mmsId"
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context.queryCursor(uri, emptyArray(), selection) { cursor ->
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val part = cursor.rowsToJson()
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val hasTextValue = (part.has(Telephony.Mms.Part.TEXT) && !part.get(Telephony.Mms.Part.TEXT).optString.isNullOrEmpty())
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when {
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hasTextValue -> {
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part.addProperty(MMS_CONTENT, "")
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}
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part.get(Telephony.Mms.Part.CONTENT_TYPE).optString?.startsWith("text/") == true -> {
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part.addProperty(MMS_CONTENT, usePart(part.get(Telephony.Mms.Part._ID).asLong) { stream ->
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stream.readBytes().toString(Charsets.UTF_8)
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})
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}
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else -> {
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part.addProperty(MMS_CONTENT, usePart(part.get(Telephony.Mms.Part._ID).asLong) { stream ->
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Base64.encodeToString(stream.readBytes(), Base64.DEFAULT)
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})
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}
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}
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jsonArray.add(part)
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}
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return jsonArray
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}
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@SuppressLint("NewApi")
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private fun usePart(partId: Long, block: (InputStream) -> String): String {
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val partUri = if (isQPlus()) {
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Telephony.Mms.Part.CONTENT_URI.buildUpon().appendPath(partId.toString()).build()
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} else {
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Uri.parse("content://mms/part/$partId")
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}
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try {
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val stream = context.contentResolver.openInputStream(partUri)
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if (stream == null) {
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val msg = "failed opening stream for mms part $partUri"
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Log.e(TAG, msg)
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return ""
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}
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stream.use {
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return block(stream)
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}
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} catch (e: IOException) {
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val msg = "failed to read MMS part on $partUri"
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Log.e(TAG, msg, e)
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return ""
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}
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}
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@SuppressLint("NewApi")
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private fun getMMSAddresses(messageId: Long): JsonArray {
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val jsonArray = JsonArray()
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val addressUri = if (isQPlus()) {
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Telephony.Mms.Addr.getAddrUriForMessage(messageId.toString())
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} else {
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Uri.parse("content://mms/$messageId/addr")
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}
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val projection = arrayOf(Telephony.Mms.Addr.ADDRESS, Telephony.Mms.Addr.TYPE)
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val selection = "${Telephony.Mms.Addr.MSG_ID}=$messageId"
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context.queryCursor(addressUri, projection, selection) { cursor ->
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when (cursor.getIntValue(Telephony.Mms.Addr.TYPE)) {
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PduHeaders.FROM, PduHeaders.TO, PduHeaders.CC, PduHeaders.BCC -> jsonArray.add(cursor.getStringValue(Telephony.Mms.Addr.ADDRESS))
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}
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}
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return jsonArray
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}
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}
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