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- Generalizing OTS Calendar access

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- Developing OTS access points with OkHttp
This commit is contained in:
Vitor Pamplona 2024-02-25 17:04:51 -05:00
parent 880915e702
commit 6a7d33e58f
15 changed files with 498 additions and 32 deletions
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93
app/src/androidTest/java/com/vitorpamplona/amethyst/OkHttpOtsTest.kt Normal file
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@ -0,0 +1,93 @@
/**
* Copyright (c) 2024 Vitor Pamplona
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
* Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package com.vitorpamplona.amethyst
import androidx.test.ext.junit.runners.AndroidJUnit4
import com.vitorpamplona.amethyst.service.ots.OkHttpBlockstreamExplorer
import com.vitorpamplona.amethyst.service.ots.OkHttpCalendarBuilder
import com.vitorpamplona.quartz.crypto.KeyPair
import com.vitorpamplona.quartz.events.Event
import com.vitorpamplona.quartz.events.OtsEvent
import com.vitorpamplona.quartz.ots.OpenTimestamps
import com.vitorpamplona.quartz.signers.NostrSignerInternal
import junit.framework.TestCase.assertEquals
import org.junit.Assert
import org.junit.Before
import org.junit.Test
import org.junit.runner.RunWith
import java.util.concurrent.CountDownLatch
import java.util.concurrent.TimeUnit
@RunWith(AndroidJUnit4::class)
class OkHttpOtsTest {
val otsEvent = "{\"content\":\"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\",\"created_at\":1707690688,\"id\":\"759f9da5846e936fab06766a524b36ba71c03bbc69ad0944fb8ee4bb1f3dd705\",\"kind\":1040,\"pubkey\":\"82fbb08c8ef45c4d71c88368d0ae805bc62fb92f166ab04a0b7a0c83d8cbc29a\",\"sig\":\"07c7896c8cbb97b5d7483097590c9d31b73f35c1ad9e752002bb5c1776cbd852e1d32704333d6930c9bc3e40f8b899a1f2e9f91cc3bf797d86acdecba7792576\",\"tags\":[[\"e\",\"a828a25b4165b14f65a8ae5fd40f9c2fa086275021e15fc0d7234963fb2d504d\"],[\"p\",\"595ca8eaace5899cb6ab7e2542bfc972136376f2eabc09287f1857eb8f167e53\"],[\"alt\",\"NIP-03 time stamp\"]]}"
val otsEvent2 = "{\"content\":\"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\",\"created_at\":1706324334,\"id\":\"2ad074ddb7724eb13b4244b49cf2321b1057f37fdf8ce102e6329b839cf763a9\",\"kind\":1040,\"pubkey\":\"82fbb08c8ef45c4d71c88368d0ae805bc62fb92f166ab04a0b7a0c83d8cbc29a\",\"sig\":\"ad7274bb32ba9e9cfdbd52f4887e8a2fda1047c75a7185b2ab7ff254ebac14ed48a2b60737494d655e24c9400eeeec7e29293a77bfcaafaecd94b350c9a2c22b\",\"tags\":[[\"e\",\"a8634f5368e17789e8fb3836cad0e4b9fe4f2288afafc28723c04bebc68a18d6\"],[\"p\",\"c31e22c3715c1bde5608b7e0d04904f22f5fc453ba1806d21c9f2382e1e58c6c\"],[\"alt\",\"NIP-03 time stamp\"]]}"
val otsPendingEvent = "{\"id\":\"12fa15ad4b4cf9dc5940389325b69b93c5c1f59c049c701ee669b275299fdaf1\",\"pubkey\":\"dcaa6c8a2f47b6fef4a34b20e8843c59dbe7c5f07a402338c09fd147dd01d22b\",\"created_at\":1708877521,\"kind\":1040,\"tags\":[[\"e\",\"a8634f5368e17789e8fb3836cad0e4b9fe4f2288afafc28723c04bebc68a18d6\"],[\"alt\",\"Opentimestamps Attestation\"]],\"content\":\"AE9wZW5UaW1lc3RhbXBzAABQcm9vZgC/ieLohOiSlAEIqGNPU2jhd4no+zg2ytDkuf5PIoivr8KHI8BL68aKGNbwELidvzr0usf55CkpKf6OABQI//AQK3sWd2tq+7KO8YNJIARJugjxBGXbZtPwCL0H4/7GL5+SAIPf4w0u+QyOLCtodHRwczovL2JvYi5idGMuY2FsZW5kYXIub3BlbnRpbWVzdGFtcHMub3Jn//AQPDZsJgN1TnJXoUzlsgo93wjwIIfBc7LUqkCbC1BLZRZ+6LXztK50UdH5xe7fn40bupkrCPEEZdtm0/AI0CADXN5ZIncAg9/jDS75DI4uLWh0dHBzOi8vYWxpY2UuYnRjLmNhbGVuZGFyLm9wZW50aW1lc3RhbXBzLm9yZ/AQcELcSrE04cuGKlZQf2LeVwjwILUDSf9vK2GaefKTpn/LV2oUsQaA5WbqaP3C+1ZxQfRNCPEEZdtm0/AIbCtb+yRXFqUAg9/jDS75DI4pKGh0dHBzOi8vZmlubmV5LmNhbGVuZGFyLmV0ZXJuaXR5d2FsbC5jb20=\",\"sig\":\"f6854c0228c15c08aeb70bbabe9ed87bbb7289fab31b13cabac15138bb71179553e06080b83f4a813fbdaf614f63293beea3fc73fe865da6551193fa4d38de04\"}"
val otsEvent2Digest = "a8634f5368e17789e8fb3836cad0e4b9fe4f2288afafc28723c04bebc68a18d6"
@Before
fun setup() {
OtsEvent.otsInstance = OpenTimestamps(OkHttpBlockstreamExplorer(), OkHttpCalendarBuilder())
}
@Test
fun verifyNostrEvent() {
val ots = Event.fromJson(otsEvent) as OtsEvent
println(ots.info())
assertEquals(1707688818L, ots.verify())
}
@Test
fun verifyNostrEvent2() {
val ots = Event.fromJson(otsEvent2) as OtsEvent
println(ots.info())
assertEquals(1706322179L, ots.verify())
}
@Test
fun verifyNostrPendingEvent() {
val ots = Event.fromJson(otsPendingEvent) as OtsEvent
println(ots.info())
assertEquals(null, ots.verify())
}
@Test
fun createOTSEventAndVerify() {
val signer = NostrSignerInternal(KeyPair())
var ots: OtsEvent? = null
val countDownLatch = CountDownLatch(1)
OtsEvent.create(otsEvent2Digest, signer) {
ots = it
countDownLatch.countDown()
}
Assert.assertTrue(countDownLatch.await(1, TimeUnit.SECONDS))
println(ots!!.toJson())
println(ots!!.info())
// Should not be valid
assertEquals(null, ots!!.verify())
}
}

6
app/src/main/java/com/vitorpamplona/amethyst/Amethyst.kt
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@ -29,7 +29,11 @@ import android.util.Log
import androidx.security.crypto.EncryptedSharedPreferences
import coil.ImageLoader
import coil.disk.DiskCache
import com.vitorpamplona.amethyst.service.ots.OkHttpBlockstreamExplorer
import com.vitorpamplona.amethyst.service.ots.OkHttpCalendarBuilder
import com.vitorpamplona.amethyst.service.playback.VideoCache
import com.vitorpamplona.quartz.events.OtsEvent
import com.vitorpamplona.quartz.ots.OpenTimestamps
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.GlobalScope
@ -65,6 +69,8 @@ class Amethyst : Application() {
super.onCreate()
instance = this
OtsEvent.otsInstance = OpenTimestamps(OkHttpBlockstreamExplorer(), OkHttpCalendarBuilder())
if (BuildConfig.DEBUG) {
StrictMode.setThreadPolicy(
ThreadPolicy.Builder().detectAll().penaltyLog().build(),

103
app/src/main/java/com/vitorpamplona/amethyst/service/ots/OkHttpBlockstreamExplorer.kt Normal file
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@ -0,0 +1,103 @@
/**
* Copyright (c) 2024 Vitor Pamplona
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
* Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package com.vitorpamplona.amethyst.service.ots
import android.util.Log
import com.fasterxml.jackson.module.kotlin.jacksonObjectMapper
import com.vitorpamplona.amethyst.BuildConfig
import com.vitorpamplona.amethyst.service.HttpClientManager
import com.vitorpamplona.quartz.ots.BitcoinExplorer
import com.vitorpamplona.quartz.ots.BlockHeader
import com.vitorpamplona.quartz.ots.exceptions.UrlException
import okhttp3.Request
class OkHttpBlockstreamExplorer : BitcoinExplorer {
/**
* Retrieve the block information from the block hash.
*
* @param hash Hash of the block.
* @return the blockheader of the hash
* @throws Exception desc
*/
override fun block(hash: String): BlockHeader {
val client = HttpClientManager.getHttpClient()
val url = "$BLOCKSTREAM_API_URL/block/$hash"
val request =
Request.Builder()
.header("User-Agent", "Amethyst/${BuildConfig.VERSION_NAME}")
.header("Accept", "application/json")
.url(url)
.get()
.build()
client.newCall(request).execute().use {
if (it.isSuccessful) {
val jsonObject = jacksonObjectMapper().readTree(it.body.string())
val blockHeader = BlockHeader()
blockHeader.merkleroot = jsonObject["merkle_root"].asText()
blockHeader.setTime(jsonObject["timestamp"].asInt().toString())
blockHeader.blockHash = hash
Log.d("OkHttpBlockstreamExplorer", "$BLOCKSTREAM_API_URL/block/$hash")
return blockHeader
} else {
throw UrlException("Couldn't open $url: " + it.message + " " + it.code)
}
}
}
/**
* Retrieve the block hash from the block height.
*
* @param height Height of the block.
* @return the hash of the block at height height
* @throws Exception desc
*/
@Throws(Exception::class)
override fun blockHash(height: Int): String {
val client = HttpClientManager.getHttpClient()
val url = "$BLOCKSTREAM_API_URL/block-height/$height"
val request =
Request.Builder()
.header("User-Agent", "Amethyst/${BuildConfig.VERSION_NAME}")
.url(url)
.get()
.build()
client.newCall(request).execute().use {
if (it.isSuccessful) {
val blockHash = it.body.string()
Log.d("OkHttpBlockstreamExplorer", "$url $blockHash")
return blockHash
} else {
throw UrlException(it.message)
}
}
}
companion object {
private const val BLOCKSTREAM_API_URL = "https://blockstream.info/api"
}
}

133
app/src/main/java/com/vitorpamplona/amethyst/service/ots/OkHttpCalendar.kt Normal file
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@ -0,0 +1,133 @@
/**
* Copyright (c) 2024 Vitor Pamplona
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
* Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package com.vitorpamplona.amethyst.service.ots
import com.vitorpamplona.amethyst.BuildConfig
import com.vitorpamplona.amethyst.service.HttpClientManager
import com.vitorpamplona.quartz.encoders.Hex
import com.vitorpamplona.quartz.ots.ICalendar
import com.vitorpamplona.quartz.ots.StreamDeserializationContext
import com.vitorpamplona.quartz.ots.Timestamp
import com.vitorpamplona.quartz.ots.exceptions.CommitmentNotFoundException
import com.vitorpamplona.quartz.ots.exceptions.DeserializationException
import com.vitorpamplona.quartz.ots.exceptions.ExceededSizeException
import com.vitorpamplona.quartz.ots.exceptions.UrlException
import com.vitorpamplona.quartz.ots.http.Request
import okhttp3.MediaType.Companion.toMediaType
import okhttp3.RequestBody.Companion.toRequestBody
/**
* Class representing remote calendar server interface.
*/
class OkHttpCalendar(val url: String) : ICalendar {
/**
* Submitting a digest to remote calendar. Returns a com.eternitywall.ots.Timestamp committing to that digest.
*
* @param digest The digest hash to send.
* @return the Timestamp received from the calendar.
* @throws ExceededSizeException if response is too big.
* @throws UrlException if url is not reachable.
* @throws DeserializationException if the data is corrupt
*/
@Throws(ExceededSizeException::class, UrlException::class, DeserializationException::class)
override fun submit(digest: ByteArray): Timestamp {
try {
val client = HttpClientManager.getHttpClient()
val url = "$url/digest"
val mediaType = "application/x-www-form-urlencoded; charset=utf-8".toMediaType()
val requestBody = digest.toRequestBody(mediaType)
val request =
okhttp3.Request.Builder()
.header("User-Agent", "Amethyst/${BuildConfig.VERSION_NAME}")
.header("Accept", "application/vnd.opentimestamps.v1")
.header("Content-Type", "application/x-www-form-urlencoded")
.url(url)
.post(requestBody)
.build()
client.newCall(request).execute().use {
if (it.isSuccessful) {
val ctx = StreamDeserializationContext(it.body.bytes())
return Timestamp.deserialize(ctx, digest)
} else {
throw UrlException("Failed to open $url")
}
}
} catch (e: ExceededSizeException) {
throw e
} catch (e: DeserializationException) {
throw e
} catch (e: Exception) {
throw UrlException(e.message)
}
}
/**
* Get a timestamp for a given commitment.
*
* @param commitment The digest hash to send.
* @return the Timestamp from the calendar server (with blockchain information if already written).
* @throws ExceededSizeException if response is too big.
* @throws UrlException if url is not reachable.
* @throws CommitmentNotFoundException if commit is not found.
* @throws DeserializationException if the data is corrupt
*/
@Throws(
DeserializationException::class,
ExceededSizeException::class,
CommitmentNotFoundException::class,
UrlException::class,
)
override fun getTimestamp(commitment: ByteArray): Timestamp {
try {
val client = HttpClientManager.getHttpClient()
val url = url + "/timestamp/" + Hex.encode(commitment)
val request =
okhttp3.Request.Builder()
.header("User-Agent", "Amethyst/${BuildConfig.VERSION_NAME}")
.header("Accept", "application/vnd.opentimestamps.v1")
.header("Content-Type", "application/x-www-form-urlencoded")
.url(url)
.get()
.build()
client.newCall(request).execute().use {
if (it.isSuccessful) {
val ctx = StreamDeserializationContext(it.body.bytes())
return Timestamp.deserialize(ctx, commitment)
} else {
throw CommitmentNotFoundException("Calendar response a status code != 200: " + it.code)
}
}
} catch (e: DeserializationException) {
throw e
} catch (e: ExceededSizeException) {
throw e
} catch (e: CommitmentNotFoundException) {
throw e
} catch (e: Exception) {
throw UrlException(e.message)
}
}
}

73
app/src/main/java/com/vitorpamplona/amethyst/service/ots/OkHttpCalendarAsyncSubmit.kt Normal file
View File

@ -0,0 +1,73 @@
/**
* Copyright (c) 2024 Vitor Pamplona
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
* Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package com.vitorpamplona.amethyst.service.ots
import com.vitorpamplona.amethyst.BuildConfig
import com.vitorpamplona.amethyst.service.HttpClientManager
import com.vitorpamplona.quartz.ots.ICalendarAsyncSubmit
import com.vitorpamplona.quartz.ots.StreamDeserializationContext
import com.vitorpamplona.quartz.ots.Timestamp
import okhttp3.MediaType.Companion.toMediaType
import okhttp3.RequestBody.Companion.toRequestBody
import java.util.Optional
import java.util.concurrent.BlockingQueue
/**
* For making async calls to a calendar server
*/
class OkHttpCalendarAsyncSubmit(private val url: String, private val digest: ByteArray) : ICalendarAsyncSubmit {
private var queue: BlockingQueue<Optional<Timestamp>>? = null
fun setQueue(queue: BlockingQueue<Optional<Timestamp>>?) {
this.queue = queue
}
@Throws(Exception::class)
override fun call(): Optional<Timestamp> {
val client = HttpClientManager.getHttpClient()
val url = "$url/digest"
val mediaType = "application/x-www-form-urlencoded; charset=utf-8".toMediaType()
val requestBody = digest.toRequestBody(mediaType)
val request =
okhttp3.Request.Builder()
.header("User-Agent", "Amethyst/${BuildConfig.VERSION_NAME}")
.header("Accept", "application/vnd.opentimestamps.v1")
.header("Content-Type", "application/x-www-form-urlencoded")
.url(url)
.post(requestBody)
.build()
client.newCall(request).execute().use {
if (it.isSuccessful) {
val ctx = StreamDeserializationContext(it.body.bytes())
val timestamp = Timestamp.deserialize(ctx, digest)
val of = Optional.of(timestamp)
queue!!.add(of)
return of
} else {
queue!!.add(Optional.empty())
return Optional.empty()
}
}
}
}

38
app/src/main/java/com/vitorpamplona/amethyst/service/ots/OkHttpCalendarBuilder.kt Normal file
View File

@ -0,0 +1,38 @@
/**
* Copyright (c) 2024 Vitor Pamplona
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
* Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package com.vitorpamplona.amethyst.service.ots
import com.vitorpamplona.quartz.ots.CalendarBuilder
import com.vitorpamplona.quartz.ots.ICalendar
import com.vitorpamplona.quartz.ots.ICalendarAsyncSubmit
class OkHttpCalendarBuilder : CalendarBuilder {
override fun newSyncCalendar(url: String): ICalendar {
return OkHttpCalendar(url)
}
override fun newAsyncCalendar(
url: String,
digest: ByteArray,
): ICalendarAsyncSubmit {
return OkHttpCalendarAsyncSubmit(url, digest)
}
}

9
quartz/src/main/java/com/vitorpamplona/quartz/events/OtsEvent.kt
View File

@ -25,6 +25,7 @@ import androidx.compose.runtime.Immutable
import com.vitorpamplona.quartz.encoders.HexKey
import com.vitorpamplona.quartz.encoders.hexToByteArray
import com.vitorpamplona.quartz.ots.BlockstreamExplorer
import com.vitorpamplona.quartz.ots.CalendarPureJavaBuilder
import com.vitorpamplona.quartz.ots.DetachedTimestampFile
import com.vitorpamplona.quartz.ots.Hash
import com.vitorpamplona.quartz.ots.OpenTimestamps
@ -58,7 +59,7 @@ class OtsEvent(
val detachedOts = DetachedTimestampFile.deserialize(otsByteArray())
val result = OpenTimestamps(BlockstreamExplorer()).verify(detachedOts, digest)
val result = otsInstance.verify(detachedOts, digest)
if (result == null || result.isEmpty()) {
return null
} else {
@ -73,17 +74,19 @@ class OtsEvent(
fun info(): String {
val detachedOts = DetachedTimestampFile.deserialize(otsByteArray())
return OpenTimestamps(BlockstreamExplorer()).info(detachedOts)
return otsInstance.info(detachedOts)
}
companion object {
const val KIND = 1040
const val ALT = "Opentimestamps Attestation"
var otsInstance = OpenTimestamps(BlockstreamExplorer(), CalendarPureJavaBuilder())
fun stamp(eventId: HexKey): ByteArray {
val hash = Hash(eventId.hexToByteArray(), OpSHA256._TAG)
val file = DetachedTimestampFile.from(hash)
val timestamp = OpenTimestamps(BlockstreamExplorer()).stamp(file)
val timestamp = otsInstance.stamp(file)
val detachedToSerialize = DetachedTimestampFile(hash.getOp(), timestamp)
return detachedToSerialize.serialize()
}

4
quartz/src/main/java/com/vitorpamplona/quartz/ots/Calendar.java
View File

@ -14,7 +14,7 @@ import java.util.Map;
/**
* Class representing remote calendar server interface.
*/
public class Calendar {
public class Calendar implements ICalendar {
private String url;
@ -46,6 +46,7 @@ public class Calendar {
* @throws UrlException if url is not reachable.
* @throws DeserializationException if the data is corrupt
*/
@Override
public Timestamp submit(byte[] digest)
throws ExceededSizeException, UrlException, DeserializationException {
try {
@ -85,6 +86,7 @@ public class Calendar {
* @throws CommitmentNotFoundException if commit is not found.
* @throws DeserializationException if the data is corrupt
*/
@Override
public Timestamp getTimestamp(byte[] commitment) throws DeserializationException, ExceededSizeException, CommitmentNotFoundException, UrlException {
try {
Map<String, String> headers = new HashMap<>();

3
quartz/src/main/java/com/vitorpamplona/quartz/ots/CalendarAsyncSubmit.java
View File

@ -10,12 +10,11 @@ import java.util.HashMap;
import java.util.Map;
import java.util.Optional;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.Callable;
/**
* For making async calls to a calendar server
*/
public class CalendarAsyncSubmit implements Callable<Optional<Timestamp>> {
public class CalendarAsyncSubmit implements ICalendarAsyncSubmit {
private String url;
private byte[] digest;

6
quartz/src/main/java/com/vitorpamplona/quartz/ots/CalendarBuilder.java Normal file
View File

@ -0,0 +1,6 @@
package com.vitorpamplona.quartz.ots;
public interface CalendarBuilder {
public ICalendar newSyncCalendar(String url);
public ICalendarAsyncSubmit newAsyncCalendar(String url, byte[] digest);
}

10
quartz/src/main/java/com/vitorpamplona/quartz/ots/CalendarPureJavaBuilder.java Normal file
View File

@ -0,0 +1,10 @@
package com.vitorpamplona.quartz.ots;
public class CalendarPureJavaBuilder implements CalendarBuilder {
public ICalendar newSyncCalendar(String url) {
return new Calendar(url);
}
public ICalendarAsyncSubmit newAsyncCalendar(String url, byte[] digest) {
return new CalendarAsyncSubmit(url, digest);
}
}

13
quartz/src/main/java/com/vitorpamplona/quartz/ots/ICalendar.java Normal file
View File

@ -0,0 +1,13 @@
package com.vitorpamplona.quartz.ots;
import com.vitorpamplona.quartz.ots.exceptions.CommitmentNotFoundException;
import com.vitorpamplona.quartz.ots.exceptions.DeserializationException;
import com.vitorpamplona.quartz.ots.exceptions.ExceededSizeException;
import com.vitorpamplona.quartz.ots.exceptions.UrlException;
public interface ICalendar {
Timestamp submit(byte[] digest)
throws ExceededSizeException, UrlException, DeserializationException;
Timestamp getTimestamp(byte[] commitment) throws DeserializationException, ExceededSizeException, CommitmentNotFoundException, UrlException;
}

9
quartz/src/main/java/com/vitorpamplona/quartz/ots/ICalendarAsyncSubmit.java Normal file
View File

@ -0,0 +1,9 @@
package com.vitorpamplona.quartz.ots;
import java.util.Optional;
import java.util.concurrent.Callable;
public interface ICalendarAsyncSubmit extends Callable<Optional<Timestamp>> {
@Override
Optional<Timestamp> call() throws Exception;
}

5
quartz/src/main/java/com/vitorpamplona/quartz/ots/OpenTimestamps.java
View File

@ -33,9 +33,12 @@ import java.util.concurrent.Executors;
public class OpenTimestamps {
BitcoinExplorer explorer;
CalendarBuilder calBuilder;
public OpenTimestamps(BitcoinExplorer explorer) {
public OpenTimestamps(BitcoinExplorer explorer, CalendarBuilder builder) {
this.explorer = explorer;
this.calBuilder = builder;
}
/**

25
quartz/src/main/java/com/vitorpamplona/quartz/ots/http/Request.java
View File

@ -91,29 +91,4 @@ public class Request implements Callable<Response> {
return response;
}
public static String urlEncodeUTF8(String s) {
try {
return URLEncoder.encode(s, "UTF-8");
} catch (UnsupportedEncodingException e) {
throw new UnsupportedOperationException(e);
}
}
public static String urlEncodeUTF8(Map<?, ?> map) {
StringBuilder sb = new StringBuilder();
for (Map.Entry<?, ?> entry : map.entrySet()) {
if (sb.length() > 0) {
sb.append("&");
}
sb.append(String.format("%s=%s",
urlEncodeUTF8(entry.getKey().toString()),
urlEncodeUTF8(entry.getValue().toString())
));
}
return sb.toString();
}
}