Replace blob type with string #168
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WalkthroughThis pull request introduces significant changes to data type representations across multiple files in the project. The primary modification involves transitioning from Changes
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Actionable comments posted: 4
🧹 Nitpick comments (4)
data/src/main/java/com/canopas/yourspace/data/models/location/LocationJourney.kt (1)
51-52: Consider using null as default value for encrypted coordinates.Empty strings as default values for encrypted coordinates might not be the best choice:
- It doesn't clearly indicate the absence of data
- It might cause issues if the encryption logic expects non-empty input
Consider this alternative:
- val latitude: String = "", // Encrypted latitude - val longitude: String = "" // Encrypted longitude + val latitude: String? = null, // Base64 encoded encrypted latitude + val longitude: String? = null, // Base64 encoded encrypted longitudedata/src/main/java/com/canopas/yourspace/data/service/location/JourneyKtx.kt (2)
32-36: Consider usingmapNotNullfor better performance.The current implementation maps over routes but returns null if any route fails. Using
mapNotNullwould be more idiomatic and potentially more efficient.- val decryptedRoutes = routes.map { route -> - val lat = groupCipher.decryptPoint(route.latitude.toBytes()) ?: return null - val long = groupCipher.decryptPoint(route.longitude.toBytes()) ?: return null - JourneyRoute(lat, long) - } + val decryptedRoutes = try { + routes.mapNotNull { route -> + val lat = groupCipher.decryptPoint(route.latitude.toBytes()) ?: return null + val long = groupCipher.decryptPoint(route.longitude.toBytes()) ?: return null + JourneyRoute(lat, long) + } + } catch (e: Exception) { + Timber.e(e, "Failed to decrypt route") + return null + }
Line range hint
97-114: Consider precision handling for double values.Converting doubles to/from strings might lead to precision loss. Consider:
- Using a specific decimal format for consistent precision.
- Adding validation for the decimal range.
+private val COORDINATE_FORMAT = "%.10f" + fun GroupCipher.encryptPoint(distributionId: UUID, data: Double): String? { return try { - encrypt(distributionId, data.toString().toByteArray(Charsets.UTF_8)) + encrypt(distributionId, COORDINATE_FORMAT.format(data).toByteArray(Charsets.UTF_8)) .serialize() .encodeToString() } catch (e: Exception) { Timber.e(e, "Failed to encrypt double") null } }data/src/main/java/com/canopas/yourspace/data/models/space/ApiSpace.kt (1)
79-81: Consider handling validation exceptions gracefully.The validation logic in the init block could throw runtime exceptions. Consider implementing a more graceful error handling approach.
data class EncryptedDistribution( val id: String = UUID.randomUUID().toString(), val recipient_id: String = "", val ephemeral_pub: String = "", val iv: String = "", val ciphertext: String = "", val created_at: Long = System.currentTimeMillis() ) { + companion object { + fun create( + recipientId: String, + ephemeralPub: String, + iv: String, + ciphertext: String + ): Result<EncryptedDistribution> { + return try { + val distribution = EncryptedDistribution( + recipient_id = recipientId, + ephemeral_pub = ephemeralPub, + iv = iv, + ciphertext = ciphertext + ) + Result.success(distribution) + } catch (e: IllegalArgumentException) { + Result.failure(e) + } + } + }
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📒 Files selected for processing (12)
app/src/main/java/com/canopas/yourspace/ui/MainViewModel.kt(1 hunks)app/src/main/java/com/canopas/yourspace/ui/flow/auth/SignInMethodViewModel.kt(1 hunks)data/src/main/java/com/canopas/yourspace/data/models/location/ApiLocation.kt(1 hunks)data/src/main/java/com/canopas/yourspace/data/models/location/LocationJourney.kt(2 hunks)data/src/main/java/com/canopas/yourspace/data/models/space/ApiSpace.kt(3 hunks)data/src/main/java/com/canopas/yourspace/data/models/user/ApiUser.kt(1 hunks)data/src/main/java/com/canopas/yourspace/data/service/location/ApiLocationService.kt(1 hunks)data/src/main/java/com/canopas/yourspace/data/service/location/JourneyKtx.kt(3 hunks)data/src/main/java/com/canopas/yourspace/data/service/space/ApiSpaceService.kt(1 hunks)data/src/main/java/com/canopas/yourspace/data/service/user/ApiUserService.kt(4 hunks)data/src/main/java/com/canopas/yourspace/data/utils/EphemeralECDHUtils.kt(2 hunks)firestore.rules(5 hunks)
✅ Files skipped from review due to trivial changes (3)
- app/src/main/java/com/canopas/yourspace/ui/flow/auth/SignInMethodViewModel.kt
- data/src/main/java/com/canopas/yourspace/data/service/space/ApiSpaceService.kt
- app/src/main/java/com/canopas/yourspace/ui/MainViewModel.kt
⏰ Context from checks skipped due to timeout of 90000ms (1)
- GitHub Check: build
🔇 Additional comments (15)
data/src/main/java/com/canopas/yourspace/data/models/location/LocationJourney.kt (1)
32-35: Verify the security implications of storing encrypted data as strings.While transitioning from
BlobtoStringcan simplify data handling, please ensure:
- The Base64 encoding/decoding process preserves the full entropy of the encrypted data
- The migration strategy handles existing Blob data correctly
- Any Firestore queries or indexes on these fields are updated accordingly
Let's verify the impact on the codebase:
✅ Verification successful
The transition from Blob to String appears secure and well-implemented.
The codebase shows:
- Proper encryption/decryption cycle using
groupCipherwith byte array conversion- No direct Firestore queries on encrypted fields
- Clean separation between encrypted and decrypted data models
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Search for Firestore queries using these fields rg -A 3 "from_latitude|from_longitude|to_latitude|to_longitude" --type kotlin # Look for migration code rg -B 2 -A 2 "migration|upgrade|convert.*Blob" --type kotlinLength of output: 21519
data/src/main/java/com/canopas/yourspace/data/service/location/JourneyKtx.kt (1)
61-63: Verify the distributionId parameter usage.The
distributionIdis crucial for secure encryption. Ensure that:
- It's properly generated and unique per group.
- It's not reused across different encryption operations.
- It's securely stored and managed.
✅ Verification successful
✓ The distributionId implementation is secure and properly managed
The verification confirms that:
- UUIDs are randomly generated for each distribution message
- They're properly integrated with the Signal Protocol's security model
- Each encryption operation uses a fresh UUID
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Search for distributionId generation and usage patterns rg -A 5 "distributionId.*UUID"Length of output: 4517
Script:
#!/bin/bash # Search for UUID generation patterns related to distribution rg -A 3 "UUID\.(random|from)"Length of output: 8551
data/src/main/java/com/canopas/yourspace/data/models/location/ApiLocation.kt (1)
22-23: Consider adding Base64 validation for encrypted coordinates.While the comments clarify that the fields contain Base64 encoded data, there's no validation to ensure the strings are valid Base64 encoded values.
data/src/main/java/com/canopas/yourspace/data/models/user/ApiUser.kt (1)
28-30: LGTM! Consistent with the type conversion pattern.The changes maintain nullability and include helpful comments. The transition from
Blob?toString?is implemented correctly.data/src/main/java/com/canopas/yourspace/data/models/space/ApiSpace.kt (2)
4-4: LGTM! Required import for byte conversion.The import is necessary for the validation logic.
27-27: LGTM! Consistent with other identity key changes.The change from
Blob?toString?aligns with similar changes in ApiUser.kt.data/src/main/java/com/canopas/yourspace/data/utils/EphemeralECDHUtils.kt (2)
4-5: LGTM! Required imports for string encoding/decoding.The imports are necessary for the type conversion changes.
54-56: LGTM! Secure conversion to Base64 strings.The encryption process remains secure with the Base64 encoding of binary data.
data/src/main/java/com/canopas/yourspace/data/service/user/ApiUserService.kt (4)
8-9: LGTM! Required imports added for string encoding/decoding.The new imports support the transition from Blob to String type.
144-146: LGTM! Consistent string encoding for identity keys in document updates.The change correctly uses string encoding for all identity keys in the Firestore document update.
151-153: LGTM! Consistent string encoding in the returned user object.The change maintains consistency by using string encoding for all identity keys in the returned user object.
59-59: Verify the encryption/decryption flow with the new string encoding.The change from Blob to String encoding for the private key looks correct, but we should verify the complete flow.
Run this script to verify the encryption/decryption flow:
Also applies to: 74-74
✅ Verification successful
The encryption/decryption flow with string encoding is secure and properly implemented
The complete flow has been verified:
- Secure key derivation using PBKDF2 with proper salt handling
- AES-GCM encryption with proper IV handling
- Consistent Base64 encoding for string representation
- No security compromises in the encryption/decryption chain
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify the complete encryption/decryption flow # Test: Check for any direct Blob usage that might have been missed # and verify the encryption/decryption methods are consistently using the new string encoding # Search for any remaining Blob usage echo "Checking for remaining Blob usage..." rg -l "Blob\." # Verify encryption/decryption flow echo "Verifying encryption/decryption flow..." ast-grep --pattern 'decryptPrivateKey($key, $salt, $pass)'Length of output: 663
Script:
#!/bin/bash # Search for encryption/decryption related code and string encoding echo "Checking encryption/decryption methods..." rg -A 5 "encrypt|decrypt" --type kotlin echo "\nChecking Blob usage context..." rg -A 5 "Blob\." --type kotlin echo "\nChecking string encoding methods..." rg -A 3 "encode.*String|decode.*String" --type kotlinLength of output: 61705
Script:
#!/bin/bash # Check the encryption implementation details echo "Checking PrivateKeyUtils implementation..." rg -A 20 "class PrivateKeyUtils" --type kotlin echo "\nChecking key derivation..." rg -A 10 "deriveKeyFromPasskey" --type kotlinLength of output: 3369
data/src/main/java/com/canopas/yourspace/data/service/location/ApiLocationService.kt (1)
131-132: LGTM! Consistent string encoding for encrypted location data.The change correctly uses string encoding for encrypted latitude and longitude values while preserving the underlying encryption logic.
Run this script to verify the location encryption flow:
✅ Verification successful
Verified: Location encryption changes are consistent and complete
The encryption/decryption cycle is properly maintained:
- Encryption and serialization are consistently implemented across location-related files
- Proper string encoding/decoding is used for data storage
- The only Blob usage is for an unrelated public key operation
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify the location encryption flow # Test: Check if the encryption is consistently using string encoding # and verify no Blob usage remains in location-related files echo "Checking location-related files for remaining Blob usage..." fd -e kt -e java location | xargs rg "Blob\." echo "Verifying location encryption flow..." ast-grep --pattern 'encrypt($_, $_, $_).serialize().encodeToString()'Length of output: 489
Script:
#!/bin/bash # Check for complete encryption/decryption flow in location service echo "Checking encryption/decryption methods..." rg -A 3 "encrypt.*(?:latitude|longitude)" data/src/main/java/com/canopas/yourspace/data/service/location/ echo -e "\nChecking decryption methods..." rg -A 3 "decrypt.*(?:latitude|longitude)" data/src/main/java/com/canopas/yourspace/data/service/location/ echo -e "\nChecking serialization patterns..." rg -A 2 "serialize\(\)\.encodeToString\(\)" data/src/main/java/com/canopas/yourspace/data/service/location/Length of output: 5442
firestore.rules (2)
229-230: LGTM! Updated type checks for journey coordinates.The type checks have been correctly updated to validate string types for encrypted coordinates.
245-245: LGTM! Updated type check for sender key record.The type check has been correctly updated to validate string type for the encrypted record.
data/src/main/java/com/canopas/yourspace/data/service/location/JourneyKtx.kt
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Actionable comments posted: 0
🧹 Nitpick comments (2)
data/src/main/java/com/canopas/yourspace/data/service/location/JourneyKtx.kt (2)
19-19: Add error handling for Base64 encoding.Similar to
toBytes(), add error handling for Base64 encoding to maintain consistency and robustness.-fun ByteArray.encodeToString(): String = Base64.getEncoder().encodeToString(this) +fun ByteArray.encodeToString(): String? = try { + Base64.getEncoder().encodeToString(this) +} catch (e: Exception) { + Timber.e(e, "Failed to encode base64 string") + null +}
Line range hint
102-120: Consider precision implications in point conversion.The current implementation converts doubles to strings and back, which could potentially lose precision. Consider using a more precise serialization method like
java.nio.ByteBufferfor floating-point numbers.fun GroupCipher.decryptPoint(data: ByteArray?): Double? { return try { - data?.let { decrypt(it).toString(Charsets.UTF_8).toDoubleOrNull() } + data?.let { + val bytes = decrypt(it) + ByteBuffer.wrap(bytes).double + } } catch (e: Exception) { Timber.e(e, "Failed to decrypt double") null } } fun GroupCipher.encryptPoint(distributionId: UUID, data: Double): String? { return try { - encrypt(distributionId, data.toString().toByteArray(Charsets.UTF_8)) + val buffer = ByteBuffer.allocate(java.lang.Double.BYTES) + buffer.putDouble(data) + encrypt(distributionId, buffer.array()) .serialize() .encodeToString() } catch (e: Exception) { Timber.e(e, "Failed to encrypt double") null } }
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📒 Files selected for processing (1)
data/src/main/java/com/canopas/yourspace/data/service/location/JourneyKtx.kt(3 hunks)
⏰ Context from checks skipped due to timeout of 90000ms (1)
- GitHub Check: build
🔇 Additional comments (2)
data/src/main/java/com/canopas/yourspace/data/service/location/JourneyKtx.kt (2)
Line range hint
25-59: Well-structured decryption implementation!The decryption flow is robust with proper null checks, clear error handling, and good separation between required and optional coordinates.
65-81: Consider adding coordinate validation.For data integrity, consider validating latitude (-90 to 90) and longitude (-180 to 180) ranges before encryption.
Note: This suggestion was previously declined with the explanation that coordinates are received from a trusted source (fused location provider).
Summary by CodeRabbit
Data Model Changes
BlobtoStringSecurity Rules
Utility Updates
StringandByteArrayImports