🛡️ Sentinel: [Security Enhancement] Validate Resource IDs & Harden Folder Names by abhimehro · Pull Request #154 · abhimehro/ctrld-sync

abhimehro · 2026-02-02T10:50:19Z

🛡️ Sentinel: [Security Enhancement] Validate Resource IDs & Harden Folder Names

🚨 Severity: MEDIUM (Defense in Depth)

💡 Vulnerability:

Potential IDOR/Path Traversal if the upstream Control D API returns unsafe Resource IDs (PKs).
Potential XSS/Injection via folder names (user supplied content via JSON).

🎯 Impact:

If the API is compromised or buggy, it could cause the client to perform operations on unintended resources or paths.
Malicious folder names could cause issues in the Control D Dashboard or local logs.

🔧 Fix:

Introduced validate_resource_id function enforcing strict whitelist (^[a-zA-Z0-9_-]+$) and length limit (64) for IDs.
Integrated ID validation into list_existing_folders, create_folder, and delete_folder.
Hardened is_valid_folder_name to use a whitelist (^[a-zA-Z0-9 \-_.()\[\]{}]+$) and length limit (64).

✅ Verification:

Added tests/test_id_validation.py covering valid/invalid cases.
Ran full test suite ensuring no regressions.

PR created automatically by Jules for task 17753503888228180137 started by @abhimehro

…lder Names - Added `validate_resource_id` to enforce strict ID format. - Integrated ID validation in API response handling. - Hardened `is_valid_folder_name` with whitelist and length limit. - Added comprehensive tests. Co-authored-by: abhimehro <84992105+abhimehro@users.noreply.github.com>

google-labs-jules · 2026-02-02T10:50:20Z

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trunk-io · 2026-02-02T10:50:23Z

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tests/test_id_validation.py

+        "a" * 64,  # Max length
+    ]
+    for rid in valid_ids:
+        assert main.validate_resource_id(rid) is True, f"Should accept {rid}"


tests/test_id_validation.py

+    main.log = MagicMock()
+    try:
+        for rid in invalid_ids:
+            assert main.validate_resource_id(rid) is False, f"Should reject {rid}"


tests/test_id_validation.py

+    main.log = MagicMock()
+    try:
+        long_id = "a" * 65
+        assert main.validate_resource_id(long_id) is False


tests/test_id_validation.py

+
+def test_validate_resource_id_empty():
+    """Test empty ID."""
+    assert main.validate_resource_id("") is False


tests/test_id_validation.py

+def test_validate_resource_id_empty():
+    """Test empty ID."""
+    assert main.validate_resource_id("") is False
+    assert main.validate_resource_id(None) is False


tests/test_id_validation.py

+        "123456",
+    ]
+    for name in valid_names:
+        assert main.is_valid_folder_name(name) is True, f"Should accept {name}"


tests/test_id_validation.py

+        "Folder with \\", # New restriction
+    ]
+    for name in invalid_names:
+        assert main.is_valid_folder_name(name) is False, f"Should reject {name}"


tests/test_id_validation.py

+def test_is_valid_folder_name_length():
+    """Test folder name length limit."""
+    long_name = "a" * 65
+    assert main.is_valid_folder_name(long_name) is False


gemini-code-assist · 2026-02-02T10:50:38Z

Summary of Changes

Hello @abhimehro, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request significantly enhances the security posture of the application by implementing robust input validation for resource identifiers and user-supplied folder names. By introducing a generic resource ID validation function and tightening the rules for folder names, it proactively mitigates potential IDOR/Path Traversal and XSS/Injection vulnerabilities, ensuring safer interactions with the Control D API and protecting against malicious data.

Highlights

Resource ID Validation: Introduced a new validate_resource_id function for strict validation of resource IDs (alphanumeric, hyphen, underscore, max 64 chars) to prevent IDOR/Path Traversal.
Folder Name Hardening: Hardened the is_valid_folder_name function with a stricter whitelist (alphanumeric, space, hyphen, dot, underscore, parens, brackets, braces, max 64 chars) to prevent XSS/Injection.
API Integration: Integrated resource ID validation into list_existing_folders, create_folder, and delete_folder to ensure all API interactions use safe IDs.
New Test Suite: Added a new test file tests/test_id_validation.py with comprehensive unit tests for the new ID validation and updated folder name validation logic.
Security Learning Note: Added a security learning note in .jules/sentinel.md emphasizing the importance of validating even 'trusted' API inputs.
Python Version Update: Removed the .python-version file, implicitly updating the Python environment from 3.13.

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tests/test_id_validation.py

+        "a" * 64,  # Max length
+    ]
+    for rid in valid_ids:
+        assert main.validate_resource_id(rid) is True, f"Should accept {rid}"


tests/test_id_validation.py

+    main.log = MagicMock()
+    try:
+        for rid in invalid_ids:
+            assert main.validate_resource_id(rid) is False, f"Should reject {rid}"


tests/test_id_validation.py

+    main.log = MagicMock()
+    try:
+        long_id = "a" * 65
+        assert main.validate_resource_id(long_id) is False


tests/test_id_validation.py

+
+def test_validate_resource_id_empty():
+    """Test empty ID."""
+    assert main.validate_resource_id("") is False


tests/test_id_validation.py

+def test_validate_resource_id_empty():
+    """Test empty ID."""
+    assert main.validate_resource_id("") is False
+    assert main.validate_resource_id(None) is False


tests/test_id_validation.py

+        "123456",
+    ]
+    for name in valid_names:
+        assert main.is_valid_folder_name(name) is True, f"Should accept {name}"


tests/test_id_validation.py

+        "Folder with \\", # New restriction
+    ]
+    for name in invalid_names:
+        assert main.is_valid_folder_name(name) is False, f"Should reject {name}"


tests/test_id_validation.py

+def test_is_valid_folder_name_length():
+    """Test folder name length limit."""
+    long_name = "a" * 65
+    assert main.is_valid_folder_name(long_name) is False


main.py

-        return False
-    if len(profile_id) > 64:
+def validate_resource_id(
+    resource_id: str, type_name: str = "ID", log_errors: bool = True


main.py

+    Allowed: Alphanumeric, hyphen, underscore.
+    Max Length: 64
+    """
+    if not resource_id:


main.py

+                    result[name.strip()] = pk
+                else:
+                    log.warning(
+                        f"Skipping folder '{sanitize_for_log(name)}' with unsafe PK: {sanitize_for_log(pk)}"


main.py

+                    log.warning(
+                        f"Skipping folder '{sanitize_for_log(name)}' with unsafe PK: {sanitize_for_log(pk)}"
+                    )
+        return result


main.py

@@ -759,6 +777,10 @@ def _validate_and_fetch(url: str):
 def delete_folder(
    client: httpx.Client, profile_id: str, name: str, folder_id: str


main.py

tests/test_id_validation.py

@@ -0,0 +1,91 @@
+import pytest


tests/test_id_validation.py

@@ -0,0 +1,91 @@
+import pytest
+from unittest.mock import MagicMock


tests/test_id_validation.py

@@ -0,0 +1,91 @@
+import pytest


main.py


+    if len(resource_id) > 64:
+        if log_errors:
+            log.error(f"Invalid {type_name} length (max 64 chars)")


main.py

-                log.error("Invalid profile ID format (contains unsafe characters)")
-            elif len(profile_id) > 64:
-                log.error("Invalid profile ID length (max 64 chars)")
+            log.error(f"Invalid {type_name} format (contains unsafe characters)")


main.py

+                        f"API returned unsafe PK for folder {sanitize_for_log(name)}: {sanitize_for_log(pk)}"
+                    )
+                    return None



main.py

-                            grp["PK"],
-                        )
-                        return str(grp["PK"])
+                        pk = grp["PK"]


main.py

tests/test_id_validation.py

@@ -0,0 +1,91 @@
+import pytest


tests/test_id_validation.py

@@ -0,0 +1,91 @@
+import pytest


tests/test_id_validation.py

@@ -0,0 +1,91 @@
+import pytest
+from unittest.mock import MagicMock


tests/test_id_validation.py

@@ -0,0 +1,91 @@
+import pytest


main.py

-    dangerous_chars = set("<>\"'`")
-    if any(c in dangerous_chars for c in name):
+    if len(name) > 64:
+        return False


tests/test_id_validation.py

@@ -0,0 +1,91 @@
+import pytest


main.py

-                log.error("Invalid profile ID format (contains unsafe characters)")
-            elif len(profile_id) > 64:
-                log.error("Invalid profile ID length (max 64 chars)")
+            log.error(f"Invalid {type_name} format (contains unsafe characters)")


main.py


+    if len(resource_id) > 64:
+        if log_errors:
+            log.error(f"Invalid {type_name} length (max 64 chars)")


gemini-code-assist

Code Review

This pull request introduces important security enhancements by validating resource IDs and hardening folder name validation. The move to whitelist-based validation is a significant improvement, and the new tests provide good coverage for the new logic. My review includes a few suggestions to improve maintainability and performance, such as pre-compiling regular expressions and refactoring duplicated code blocks.

gemini-code-assist · 2026-02-02T10:56:42Z

.python-version

@@ -1 +0,0 @@
-3.13


Removing the .python-version file makes the project's Python version dependency implicit, which can harm reproducibility across different environments. To ensure consistent behavior, it's recommended to explicitly declare the Python version. Please consider restoring this file or specifying the version in another standard project configuration file, such as pyproject.toml.

gemini-code-assist · 2026-02-02T10:56:42Z

main.py

+    if not re.match(r"^[a-zA-Z0-9_-]+$", resource_id):
        if log_errors:
-            if not re.match(r"^[a-zA-Z0-9_-]+$", profile_id):
-                log.error("Invalid profile ID format (contains unsafe characters)")
-            elif len(profile_id) > 64:
-                log.error("Invalid profile ID length (max 64 chars)")
+            log.error(f"Invalid {type_name} format (contains unsafe characters)")
        return False


The regular expression ^[a-zA-Z0-9_-]+$ is recompiled every time validate_resource_id is called. For better performance, especially since this function is used for security validation in multiple places, it's a good practice to pre-compile the regex at the module level.

For example:

_RESOURCE_ID_RE = re.compile(r'^[a-zA-Z0-9_-]+$')

Then use _RESOURCE_ID_RE.match(resource_id) inside the function.

gemini-code-assist · 2026-02-02T10:56:42Z

main.py

+    if not re.match(r"^[a-zA-Z0-9 \-_.()\[\]{}]+$", name):
        return False


The regular expression ^[a-zA-Z0-9 \-_.()[\]{}]+$ is recompiled on each call to is_valid_folder_name. For better performance, it's recommended to pre-compile this regex at the module level.

gemini-code-assist · 2026-02-02T10:56:42Z

main.py

+                if validate_resource_id(str(pk), "New Folder PK"):
+                    log.info(
+                        "Created folder %s (ID %s) [Direct]", sanitize_for_log(name), pk
+                    )
+                    return str(pk)
+                else:
+                    log.error(
+                        f"API returned unsafe PK for folder {sanitize_for_log(name)}: {sanitize_for_log(pk)}"
+                    )
+                    return None


This block of code for validating a new folder's PK, logging, and returning is duplicated in this function (here, in the next if block, and in the polling fallback). To improve maintainability and reduce redundancy, consider extracting this logic into a private helper function.

Here's an example of what that helper could look like:

def _validate_and_return_pk(pk: Any, name: str, context: str) -> Optional[str]: pk_str = str(pk) if validate_resource_id(pk_str, f"{context} Folder PK"): log.info( "Created folder %s (ID %s) [%s]", sanitize_for_log(name), pk, context ) return pk_str else: log.error( f"API returned unsafe PK for folder {sanitize_for_log(name)}: {sanitize_for_log(pk)}" ) return None

gemini-code-assist · 2026-02-02T10:56:42Z

tests/test_id_validation.py

+    # Mock log to silence errors during test
+    original_log = main.log
+    main.log = MagicMock()
+    try:
+        for rid in invalid_ids:
+            assert main.validate_resource_id(rid) is False, f"Should reject {rid}"
+    finally:
+        main.log = original_log


The try...finally block to mock main.log is repeated in test_validate_resource_id_invalid_length. To make the tests cleaner and more maintainable, you could use a pytest fixture to handle mocking the logger.

For example:

@pytest.fixture def mock_log(monkeypatch): """Fixture to mock the main logger.""" mock = MagicMock() monkeypatch.setattr(main, "log", mock) return mock def test_validate_resource_id_invalid_format(mock_log): """Test invalid formats (unsafe chars).""" invalid_ids = [ # ... ] for rid in invalid_ids: assert main.validate_resource_id(rid) is False, f"Should reject {rid}"

Copilot

Pull request overview

Security hardening to reduce risk from unsafe upstream API IDs and user-supplied folder names by adding strict whitelisting and length limits.

Changes:

Added validate_resource_id and refactored validate_profile_id to use it.
Tightened is_valid_folder_name to a strict whitelist and max length.
Added unit tests for resource ID and folder name validation; added a Sentinel note; removed .python-version.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.

File	Description
`main.py`	Introduces `validate_resource_id`, strengthens folder-name validation, and applies ID validation to folder operations.
`tests/test_id_validation.py`	Adds test coverage for resource ID validation and the stricter folder-name whitelist.
`.python-version`	Removes the pinned Python version file.
`.jules/sentinel.md`	Documents the security lesson and prevention approach for unsafe API IDs.

Comments suppressed due to low confidence (1)

.python-version:1

This PR removes .python-version, but the PR description doesn’t mention any tooling/runtime change. If this is intentional, please document the rationale (e.g., repo no longer pins via pyenv/asdf) or keep the file to preserve local dev/CI consistency.

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Copilot · 2026-02-02T10:58:48Z

main.py

+                if validate_resource_id(pk, "Folder PK", log_errors=False):
+                    result[name.strip()] = pk
+                else:
+                    log.warning(
+                        f"Skipping folder '{sanitize_for_log(name)}' with unsafe PK: {sanitize_for_log(pk)}"


list_existing_folders passes pk directly into validate_resource_id, but pk comes from JSON and may be non-string (e.g., an int). That will raise TypeError at len(resource_id) / re.match(...) and can crash sync. Convert pk to str before validating and storing it (and keep the returned mapping values as strings to match the Dict[str, str] annotation).

Suggested change

if validate_resource_id(pk, "Folder PK", log_errors=False):

result[name.strip()] = pk

else:

log.warning(

f"Skipping folder '{sanitize_for_log(name)}' with unsafe PK: {sanitize_for_log(pk)}"

pk_str = str(pk)

if validate_resource_id(pk_str, "Folder PK", log_errors=False):

result[name.strip()] = pk_str

else:

log.warning(

f"Skipping folder '{sanitize_for_log(name)}' with unsafe PK: {sanitize_for_log(pk_str)}"

Copilot · 2026-02-02T10:58:48Z

tests/test_id_validation.py

+import pytest
+from unittest.mock import MagicMock
+import main


tests/test_id_validation.py has an unused pytest import and the import grouping/order doesn’t follow the repo’s configured linters/formatters (Trunk enables ruff+isort: .trunk/trunk.yaml:21-29). Remove the unused import and/or reorder imports (stdlib before third-party before local) to avoid ruff F401 / isort failures.

…itization, add dry-run plan details Incorporates the best changes from 36 Jules PRs, addressing review feedback: Bolt (Performance) - from PR #173: - Pre-compile PROFILE_ID_PATTERN and RULE_PATTERN at module level - Use compiled patterns in is_valid_profile_id_format, validate_profile_id, and is_valid_rule - Supersedes PRs: #140, #143, #152, #155, #158, #161, #167, #170, #173 Sentinel (Security) - from PR #172 with review feedback: - Enhance sanitize_for_log to redact Basic Auth credentials in URLs - Redact sensitive query parameters (token, key, secret, password, etc.) - Handle fragment separators (#) per Gemini Code Assist review - Use [^&#\s]* pattern per Copilot reviewer suggestion - Update docstring per reviewer suggestion - Supersedes PRs: #142, #145, #148, #151, #154, #157, #160, #169, #172 Palette (UX) - from PR #174 with lint fixes: - Add print_plan_details function for dry-run visibility - Fix duplicate render_progress_bar definition bug - Supersedes PRs: #139, #141, #144, #147, #150, #153, #156, #159, #162, #165, #168, #171, #174 Also: #146, #149, #164 (parallel folder deletion) and #166 (auto-fix .env perms) are independent features not consolidated here. Co-authored-by: abhimehro <84992105+abhimehro@users.noreply.github.com>

Copilot AI review requested due to automatic review settings February 2, 2026 10:50

github-actions bot added the python label Feb 2, 2026

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Copilot AI mentioned this pull request Feb 8, 2026

Consolidate 36 Jules PRs: pre-compile regex, harden log sanitization, add dry-run plan details #175

Merged

abhimehro closed this Feb 9, 2026

abhimehro deleted the sentinel/validate-resource-ids-17753503888228180137 branch February 9, 2026 00:19

		@@ -759,6 +777,10 @@ def _validate_and_fetch(url: str):
		def delete_folder(
		client: httpx.Client, profile_id: str, name: str, folder_id: str

		@@ -0,0 +1,91 @@
		import pytest
		from unittest.mock import MagicMock

		if not re.match(r"^[a-zA-Z0-9 \-_.()\[\]{}]+$", name):
		return False

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Pull request overview