Feature: Extend dir id backup class #260
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* constants to clearly show their purpose * methods in DirIdBackup for later "symmetric" implementation * aligned name of unit test class
WalkthroughThe pull request introduces several modifications primarily focused on the handling of directory ID backups within the Additionally, constants in the Possibly related PRs
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Actionable comments posted: 0
🧹 Outside diff range and nitpick comments (9)
src/main/java/org/cryptomator/cryptofs/health/dirid/ObeseDirFile.java (1)
Line range hint
39-39: Consider implementing the potential fix mentioned in commentsThe comment "potential fix: assign new dir id, move target dir" suggests a solution that could be implemented. This would be valuable for automated repair capabilities.
Would you like me to help implement this fix or create a GitHub issue to track this enhancement? This could include:
- A method to generate a new directory ID
- Logic to safely move the target directory
- Proper error handling and validation
src/main/java/org/cryptomator/cryptofs/health/dirid/OrphanContentDir.java (3)
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90-113: Handle potential exceptions when decrypting file names infixmethod.In the lambda expression within the
fixmethod, exceptions are caught and a warning is logged if the file name cannot be decrypted. Consider handling specific exceptions separately to provide more detailed diagnostics or recovery steps.
173-175: Exception handling forDirectoryIdBackup.writeinprepareStepParentmethod.The
writeoperation is enclosed in a try-catch block that specifically catchesFileAlreadyExistsException. Consider handling other potentialIOExceptioncases to prevent unexpected errors during the backup process.
Line range hint
192-201: Validate inputs indecryptFileNamemethod.The method assumes that
filenameWithExtensionhas a length greater thanConstants.CRYPTOMATOR_FILE_SUFFIX.length(). Adding validation to check this condition can prevent potentialStringIndexOutOfBoundsException.Apply this diff to add input validation:
+ if (filenameWithExtension.length() <= Constants.CRYPTOMATOR_FILE_SUFFIX.length()) { + throw new IllegalArgumentException("Invalid filename: " + filenameWithExtension); + } final String filename = filenameWithExtension.substring(0, filenameWithExtension.length() - Constants.CRYPTOMATOR_FILE_SUFFIX.length()); return cryptor.decryptFilename(BaseEncoding.base64Url(), filename, dirId);src/test/java/org/cryptomator/cryptofs/health/dirid/MissingContentDirTest.java (1)
58-64: MockDirectoryIdBackup.writecorrectly in tests.The test replaces
DirectoryIdBackup.backupManuallywithDirectoryIdBackup.write. Ensure that the static method is mocked properly to avoid unexpected interactions during the test execution.Consider updating the import statements if necessary.
src/test/java/org/cryptomator/cryptofs/DirectoryIdBackupTest.java (1)
77-77: Implement the TODO for existing file handling.The comment indicates a missing test case for handling existing files. This is important to verify the behavior when a backup file already exists.
Would you like me to help implement this test case? It should cover scenarios like:
- Overwriting existing backup
- Handling write conflicts
- Preserving file permissions
src/test/java/org/cryptomator/cryptofs/DeleteNonEmptyCiphertextDirectoryIntegrationTest.java (1)
Line range hint
141-142: Consider implementing or removing disabled tests.These test methods have been disabled with a comment "c9s not yet implemented":
- testDeleteDirectoryContainingLongNameFileWithoutMetadata
- testDeleteDirectoryContainingUnauthenticLongNameDirectoryFile
Would you like me to help implement these test cases or create GitHub issues to track their implementation?
Also applies to: 156-157
src/main/java/org/cryptomator/cryptofs/CryptoFileSystemImpl.java (1)
334-334: Consider enhancing error handling for directory ID backup.The method call looks correct, but since this is a critical operation for maintaining the integrity of the cryptographic file system, consider wrapping it in a try-catch block to handle potential backup failures gracefully.
- dirIdBackup.write(ciphertextDir); + try { + dirIdBackup.write(ciphertextDir); + } catch (IOException e) { + // Log the error but continue since the directory was created successfully + logger.warn("Failed to backup directory ID for {}: {}", ciphertextDir, e.getMessage()); + }src/test/java/org/cryptomator/cryptofs/health/dirid/OrphanContentDirTest.java (1)
433-435: Updated constant name and byte array initialization.The changes correctly reflect the updated constant name
DIR_ID_BACKUP_FILE_NAMEand consistently use byte arrays for directory IDs. However, consider using a more descriptive test value for the directory ID.- var dirId = Optional.of(new byte[]{'t', 'r', 'o', 'l', 'o', 'l', 'o'}); + var dirId = Optional.of(new byte[]{'t', 'e', 's', 't', 'D', 'i', 'r'});Also applies to: 472-474, 515-517
📜 Review details
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📒 Files selected for processing (18)
src/main/java/org/cryptomator/cryptofs/CryptoFileSystemImpl.java(1 hunks)src/main/java/org/cryptomator/cryptofs/CryptoFileSystemProvider.java(1 hunks)src/main/java/org/cryptomator/cryptofs/DirectoryIdBackup.java(3 hunks)src/main/java/org/cryptomator/cryptofs/common/Constants.java(1 hunks)src/main/java/org/cryptomator/cryptofs/dir/C9rConflictResolver.java(2 hunks)src/main/java/org/cryptomator/cryptofs/dir/DirectoryStreamFilters.java(1 hunks)src/main/java/org/cryptomator/cryptofs/health/dirid/DirIdCheck.java(2 hunks)src/main/java/org/cryptomator/cryptofs/health/dirid/MissingContentDir.java(1 hunks)src/main/java/org/cryptomator/cryptofs/health/dirid/MissingDirIdBackup.java(2 hunks)src/main/java/org/cryptomator/cryptofs/health/dirid/ObeseDirFile.java(1 hunks)src/main/java/org/cryptomator/cryptofs/health/dirid/OrphanContentDir.java(5 hunks)src/test/java/org/cryptomator/cryptofs/CryptoFileSystemImplTest.java(1 hunks)src/test/java/org/cryptomator/cryptofs/CryptoFileSystemProviderTest.java(1 hunks)src/test/java/org/cryptomator/cryptofs/DeleteNonEmptyCiphertextDirectoryIntegrationTest.java(2 hunks)src/test/java/org/cryptomator/cryptofs/DirectoryIdBackupTest.java(1 hunks)src/test/java/org/cryptomator/cryptofs/health/dirid/MissingContentDirTest.java(2 hunks)src/test/java/org/cryptomator/cryptofs/health/dirid/MissingDirIdBackupTest.java(1 hunks)src/test/java/org/cryptomator/cryptofs/health/dirid/OrphanContentDirTest.java(12 hunks)
✅ Files skipped from review due to trivial changes (1)
- src/main/java/org/cryptomator/cryptofs/dir/DirectoryStreamFilters.java
🔇 Additional comments (23)
src/test/java/org/cryptomator/cryptofs/health/dirid/MissingDirIdBackupTest.java (1)
39-39: LGTM! Test updates correctly reflect the DirectoryIdBackup API changes
The test modifications properly handle the method rename from backupManually to write, maintaining thorough verification of the fix implementation with appropriate argument matching and call count validation.
Also applies to: 47-47
src/main/java/org/cryptomator/cryptofs/health/dirid/MissingDirIdBackup.java (2)
15-15: LGTM! Documentation accurately references the constant name.
The Javadoc has been updated to use the correct constant name DIR_ID_BACKUP_FILE_NAME.
32-32: LGTM! Method call updated consistently with the refactoring.
The change from backupManually to write aligns with the broader refactoring effort across the codebase.
Let's verify the consistency of this change across the codebase:
✅ Verification successful
Method refactoring verified: backupManually has been completely replaced with write
The verification confirms:
- No occurrences of the old method name
backupManuallyexist in the codebase - The new method
DirectoryIdBackup.writeis consistently used across both production and test code - All usages follow the same parameter pattern:
(cryptor, CiphertextDirectory)
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Verify that all occurrences of backupManually have been replaced with write
# Check if there are any remaining references to the old method name
echo "Checking for any remaining references to 'backupManually'..."
rg "backupManually"
# Check the usage pattern of the new method name
echo "Verifying the usage pattern of DirectoryIdBackup.write..."
rg "DirectoryIdBackup\.write"
Length of output: 3191
src/main/java/org/cryptomator/cryptofs/health/dirid/MissingContentDir.java (1)
54-54: LGTM! Consistent with the new DirectoryIdBackup API.
The change from backupManually to write aligns with the centralized DirectoryIdBackup management approach.
Let's verify the DirectoryIdBackup API change:
✅ Verification successful
API change verified and correctly implemented
The verification confirms that:
DirectoryIdBackup.write()method exists with the correct signaturestatic void write(Cryptor cryptor, CiphertextDirectory ciphertextDirectory)- No occurrences of the old
backupManuallymethod were found in the codebase - The import and usage in
MissingContentDir.javaare correct
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Verify the DirectoryIdBackup.write() method exists and all usages are updated
# Check if the write method is properly defined in DirectoryIdBackup
ast-grep --pattern 'class DirectoryIdBackup {
$$$
static void write(Cryptor $_, CiphertextDirectory $_) {
$$$
}
$$$
}'
# Check for any remaining usage of backupManually
rg "backupManually"
Length of output: 152
Script:
#!/bin/bash
# Let's try a different approach to verify the API changes
# First, find the DirectoryIdBackup class file
fd "DirectoryIdBackup.java"
# Then let's look at its content to verify the write method
rg -A 5 "static void write"
# Also check for any class that still uses backupManually method
rg -l "backupManually"
# Let's also check the imports and usage of DirectoryIdBackup in MissingContentDir
rg -A 3 "DirectoryIdBackup" "src/main/java/org/cryptomator/cryptofs/health/dirid/MissingContentDir.java"
Length of output: 1095
src/main/java/org/cryptomator/cryptofs/health/dirid/ObeseDirFile.java (1)
31-31: Verify the constant usage for size validation
The change from MAX_DIR_FILE_LENGTH to MAX_DIR_ID_LENGTH might affect size validation behavior. Let's verify this change is consistent across the codebase.
✅ Verification successful
Let me gather more information about the constants and validation logic.
Constant usage is correct and consistent
The change from MAX_DIR_FILE_LENGTH to MAX_DIR_ID_LENGTH is correct and consistent with the codebase. The evidence shows:
MAX_DIR_ID_LENGTHis properly defined inConstants.javaas 36 chars (for UUIDv4)- This constant is consistently used across the codebase for directory ID validation:
- In
DirectoryIdBackup.javafor read validation - In
DirIdCheck.javafor size validation - In
C9rConflictResolver.javafor content comparison
- In
- No remaining references to the old
MAX_DIR_FILE_LENGTHconstant exist
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Check usage of MAX_DIR_FILE_LENGTH and MAX_DIR_ID_LENGTH constants
# to ensure consistent validation across the codebase
echo "Checking for any remaining uses of MAX_DIR_FILE_LENGTH:"
rg "MAX_DIR_FILE_LENGTH" -A 2
echo -e "\nChecking related size validation logic:"
ast-grep --pattern 'class $_ implements DiagnosticResult {
$$$
size $$$
$$$
}'
Length of output: 332
Script:
#!/bin/bash
# Search for MAX_DIR_ID_LENGTH usage and related validation logic
echo "Checking MAX_DIR_ID_LENGTH usage:"
rg "MAX_DIR_ID_LENGTH" -A 2
echo -e "\nChecking size validation in ObeseDirFile class:"
rg "class ObeseDirFile" -A 20
echo -e "\nChecking Constants class definitions:"
fd "Constants.java" --exec rg "MAX_DIR" {} -A 1
Length of output: 7712
src/main/java/org/cryptomator/cryptofs/DirectoryIdBackup.java (2)
39-42: write method is correctly implemented and handles encryption appropriately.
The write method securely writes the directory ID to the backup file using an encrypting channel. Exception handling is appropriate, and resources are properly managed with try-with-resources.
67-82: read method robustly reads and decrypts the directory ID.
The read method correctly handles the decryption of the directory ID from the backup file. It includes checks for maximum allowed length and properly manages exceptions. The use of ByteBuffer and validation ensures data integrity.
src/main/java/org/cryptomator/cryptofs/health/dirid/OrphanContentDir.java (2)
Line range hint 113-118: Ensure deletion of backup file is safe.
The deletion of the directory ID backup file uses Files.deleteIfExists, which is acceptable. However, ensure that the deletion does not affect other processes that might be accessing the file concurrently.
181-187: Properly handle exceptions in retrieveDirId method.
The method catches multiple exceptions and logs the inability to retrieve the directory ID. Ensure that this logging provides sufficient context to diagnose issues, and consider whether additional actions are needed if the directory ID cannot be retrieved.
src/test/java/org/cryptomator/cryptofs/CryptoFileSystemImplTest.java (1)
1280-1280: Verify that dirIdBackup.write is called in createDirectory test.
In the createDirectoryBackupsDirIdInCiphertextDirPath test, ensure that dirIdBackup.write(ciphertextDirectoryObject) is called exactly once to confirm that the backup is performed during directory creation.
src/main/java/org/cryptomator/cryptofs/common/Constants.java (2)
28-31: Update references to renamed constants throughout the codebase.
The constants DIR_BACKUP_FILE_NAME and MAX_DIR_FILE_LENGTH have been renamed to DIR_ID_BACKUP_FILE_NAME and MAX_DIR_ID_LENGTH, respectively. Verify that all references to the old constants have been updated to prevent compilation errors.
31-31: Ensure the correctness of MAX_DIR_ID_LENGTH.
The MAX_DIR_ID_LENGTH is set to 36 to accommodate UUID strings. Confirm that this length aligns with the format of directory IDs used in the application.
src/test/java/org/cryptomator/cryptofs/health/dirid/MissingContentDirTest.java (1)
76-76: Handle exceptions thrown by DirectoryIdBackup.write in tests.
The test simulates an IOException thrown by DirectoryIdBackup.write. Ensure that the test accurately captures and asserts this exception to validate the error handling logic.
src/main/java/org/cryptomator/cryptofs/health/dirid/DirIdCheck.java (2)
Line range hint 65-69: LGTM! Constant name change improves clarity.
The updated constant name DIR_ID_BACKUP_FILE_NAME better reflects its purpose and aligns with the centralized directory ID management approach.
119-119: LGTM! Constant name accurately reflects its purpose.
The use of MAX_DIR_ID_LENGTH better represents what's being validated - the length of the directory ID itself, not the file length.
src/test/java/org/cryptomator/cryptofs/DirectoryIdBackupTest.java (1)
43-77: Well-structured test organization with nested classes.
The use of @Nested classes provides clear separation between write and read operations, improving test readability and maintainability.
src/main/java/org/cryptomator/cryptofs/dir/C9rConflictResolver.java (1)
130-130: LGTM! Constant usage aligns with its semantic meaning.
The use of MAX_DIR_ID_LENGTH in hasSameFileContent better reflects that we're comparing directory IDs, not arbitrary file content.
src/main/java/org/cryptomator/cryptofs/CryptoFileSystemProvider.java (1)
158-158: LGTM! Method rename improves clarity.
The change from backupManually to write better reflects the method's purpose and aligns with the PR's goal of centralizing directory ID backup management.
Let's verify the consistent usage of the new method name across the codebase:
✅ Verification successful
Method rename is consistently applied across the codebase
The verification confirms that:
- No occurrences of the old
backupManuallymethod remain in the codebase - The new
DirectoryIdBackup.writemethod is consistently used in:- Main initialization (CryptoFileSystemProvider)
- Health check related classes (MissingContentDir, MissingDirIdBackup, OrphanContentDir)
- Corresponding test classes with proper mocking
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Verify that backupManually is fully replaced with write
# Test 1: Check for any remaining usage of old method name
rg "backupManually"
# Test 2: Verify the new write method usage
rg "DirectoryIdBackup\.write"
Length of output: 2929
src/test/java/org/cryptomator/cryptofs/CryptoFileSystemProviderTest.java (1)
201-201: LGTM! Constant name update matches implementation.
The test correctly verifies the backup file creation using the updated constant name DIR_ID_BACKUP_FILE_NAME, which better describes its purpose.
src/test/java/org/cryptomator/cryptofs/DeleteNonEmptyCiphertextDirectoryIntegrationTest.java (1)
172-172: LGTM! Constant name updates are consistent.
The changes correctly update the constant name to DIR_ID_BACKUP_FILE_NAME, maintaining consistency with the rest of the codebase.
Also applies to: 184-184
src/test/java/org/cryptomator/cryptofs/health/dirid/OrphanContentDirTest.java (3)
165-169: LGTM: DirectoryIdBackup mock updates are consistent.
The mock setup for DirectoryIdBackup.write has been consistently updated across all test cases, maintaining test integrity.
Also applies to: 189-193, 213-217
230-235: Well-structured exception handling tests.
Good use of parameterized tests to cover multiple exception scenarios. The test structure is clean and follows best practices:
- Custom exception class for crypto-specific errors
- Comprehensive list of expected exceptions
- Clear success and failure test cases
Also applies to: 242-250, 253-261
278-278: Consistent use of byte arrays for directory IDs.
The change from string to byte array for directory IDs is consistently applied across all test cases. This is a good improvement as it better represents the actual data structure used in production.
Also applies to: 294-294, 305-305
This PR extends the
DirectoryIdBackupclass by a read method. At the same time, some used/touched entities to make their purpose more clear.By moving the read method to the DirectoryIdBackup class, we have a centralized object to "manage" this feature. Future changes will benefit from this by simply calling one of the two methods of the class without thinking about implementation. This also dedups code in the
OrphanContentDirfix.