Java Debugger Interface implementation for analyzing security related method calls at Runtime #17
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…ity violations in runtime
WalkthroughThe recent changes introduce the Changes
Sequence Diagram(s)sequenceDiagram
participant User
participant JDIStackTraceMonitor
participant JVM
User->>JDIStackTraceMonitor: Start monitoring
JDIStackTraceMonitor->>JVM: Attach to target JVM
JVM->>JDIStackTraceMonitor: Connection established
JDIStackTraceMonitor->>JVM: Set up method entry request
JVM->>JDIStackTraceMonitor: Method entry event occurs
JDIStackTraceMonitor->>User: Notify method entry
JDIStackTraceMonitor->>JVM: Handle security exceptions if needed
JDIStackTraceMonitor->>JVM: Monitor JVM termination
JVM->>JDIStackTraceMonitor: Termination event
JDIStackTraceMonitor->>User: Monitoring stopped
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Actionable comments posted: 9
Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
Files selected for processing (2)
- src/main/java/de/tum/cit/ase/ares/api/jdi/JDIStackTraceMonitor.java (1 hunks)
- src/main/java/de/tum/cit/ase/ares/api/jdi/StudentExample.java (1 hunks)
src/main/java/de/tum/cit/ase/ares/api/jdi/JDIStackTraceMonitor.java
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| EventQueue queue = vm.eventQueue(); | ||
| while (true) { | ||
| EventSet eventSet = queue.remove(); | ||
| EventIterator eventIterator = eventSet.eventIterator(); | ||
| while (eventIterator.hasNext()) { | ||
| Event event = eventIterator.nextEvent(); | ||
| if (event instanceof MethodEntryEvent methodEntryEvent) { | ||
| List<String> locations = methodEntryEvent.thread().frames().stream().map(frame -> frame.location().toString()) | ||
| .filter(location -> location.contains("StudentExample")) | ||
| .toList(); | ||
| if (!locations.isEmpty()) { | ||
| throw new SecurityException("Access to sun.nio.fs.UnixFileSystemProvider is not allowed" + locations); | ||
| } | ||
| } else if (event instanceof VMDeathEvent || event instanceof VMDisconnectEvent) { | ||
| return; | ||
| } | ||
| } | ||
| eventSet.resume(); | ||
| } |
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Improve readability and performance of event handling loop.
The current implementation can be improved for readability and performance.
- while (true) {
- EventSet eventSet = queue.remove();
- EventIterator eventIterator = eventSet.eventIterator();
- while (eventIterator.hasNext()) {
- Event event = eventIterator.nextEvent();
- if (event instanceof MethodEntryEvent methodEntryEvent) {
- List<String> locations = methodEntryEvent.thread().frames().stream().map(frame -> frame.location().toString())
- .filter(location -> location.contains("StudentExample"))
- .toList();
- if (!locations.isEmpty()) {
- throw new SecurityException("Access to sun.nio.fs.UnixFileSystemProvider is not allowed" + locations);
- }
- } else if (event instanceof VMDeathEvent || event instanceof VMDisconnectEvent) {
- return;
- }
- }
- eventSet.resume();
- }
+ boolean running = true;
+ while (running) {
+ EventSet eventSet = queue.remove();
+ for (Event event : eventSet) {
+ if (event instanceof MethodEntryEvent methodEntryEvent) {
+ List<String> locations = methodEntryEvent.thread().frames().stream()
+ .map(frame -> frame.location().toString())
+ .filter(location -> location.contains("StudentExample"))
+ .toList();
+ if (!locations.isEmpty()) {
+ throw new SecurityException(String.format("Access to sun.nio.fs.UnixFileSystemProvider is not allowed. Locations: %s", String.join(", ", locations)));
+ }
+ } else if (event instanceof VMDeathEvent || event instanceof VMDisconnectEvent) {
+ running = false;
+ break;
+ }
+ }
+ eventSet.resume();
+ }Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
Suggested change
| EventQueue queue = vm.eventQueue(); | |
| while (true) { | |
| EventSet eventSet = queue.remove(); | |
| EventIterator eventIterator = eventSet.eventIterator(); | |
| while (eventIterator.hasNext()) { | |
| Event event = eventIterator.nextEvent(); | |
| if (event instanceof MethodEntryEvent methodEntryEvent) { | |
| List<String> locations = methodEntryEvent.thread().frames().stream().map(frame -> frame.location().toString()) | |
| .filter(location -> location.contains("StudentExample")) | |
| .toList(); | |
| if (!locations.isEmpty()) { | |
| throw new SecurityException("Access to sun.nio.fs.UnixFileSystemProvider is not allowed" + locations); | |
| } | |
| } else if (event instanceof VMDeathEvent || event instanceof VMDisconnectEvent) { | |
| return; | |
| } | |
| } | |
| eventSet.resume(); | |
| } | |
| EventQueue queue = vm.eventQueue(); | |
| boolean running = true; | |
| while (running) { | |
| EventSet eventSet = queue.remove(); | |
| for (Event event : eventSet) { | |
| if (event instanceof MethodEntryEvent methodEntryEvent) { | |
| List<String> locations = methodEntryEvent.thread().frames().stream() | |
| .map(frame -> frame.location().toString()) | |
| .filter(location -> location.contains("StudentExample")) | |
| .toList(); | |
| if (!locations.isEmpty()) { | |
| throw new SecurityException(String.format("Access to sun.nio.fs.UnixFileSystemProvider is not allowed. Locations: %s", String.join(", ", locations))); | |
| } | |
| } else if (event instanceof VMDeathEvent || event instanceof VMDisconnectEvent) { | |
| running = false; | |
| break; | |
| } | |
| } | |
| eventSet.resume(); | |
| } |
….java Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>
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Actionable comments posted: 0
Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
Files selected for processing (1)
- src/main/java/de/tum/cit/ase/ares/api/jdi/JDIStackTraceMonitor.java (1 hunks)
Files skipped from review as they are similar to previous changes (1)
- src/main/java/de/tum/cit/ase/ares/api/jdi/JDIStackTraceMonitor.java
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TBD....
Summary by CodeRabbit
New Features
JDIStackTraceMonitorclass for real-time monitoring of Java Debug Interface events, focusing on method entry tracking.StudentExampleclass to demonstrate basic file reading functionality in Java.Bug Fixes