api-endpoint-permission-canonicalizer

{"content": "", "total_lines": 0, "file_size": 0, "truncated": false, "is_binary": false, "is_image": false, "error": "File not found: /app/input.txt"}

<think>Let me break down this API endpoint permission canonicalizer task step by step:

1. **Input Format**: `/app/input.txt` has 3 sections separated by empty lines:
   - ENDPOINTS: `path method role permission` per line
   - BASE/EXCLUDE: `base <path>` and `exclude <role1> <role2> ...`
   - PLAN: `<path method>` per line

2. **Key Processing Steps**:
   - Parse ENDPOINTS with hard cutoff on malformed lines
   - Parse BASE/EXCLUDE section
   - Parse PLAN with hard cutoff on malformed lines
   - Apply base path filtering (exact prefix match)
   - Apply role exclusion filtering (with inheritance exceptions)
   - Apply PLAN filtering (exact matches + parent path inheritance)
   - Normalize paths for matching but preserve original variable names
   - Apply permission precedence and deduplication
   - Order by path specificity, method, role, permission
   - Write to `/app/output.txt`

3. **Special Rules**:
   - Path variable normalization: `{variable_name}` → `{var}` for matching
   - Parent path inheritance: include parent paths that are prefixes of PLAN endpoints
   - Hard cutoff parsing stops immediately on malformed lines
   - Excluded roles are filtered out unless needed for inheritance

Let me start by reading the input file to understand the structure and then implement the solution.</think>
I'll implement the API endpoint permission canonicalizer step by step. Let me first read the input file to understand the structure.

→ read_file({"path": "/app/input.txt"})

{"total_count": 0}

<think>The input file doesn't exist yet. Let me check what files are in the /app directory first.</think>

→ search_files({"target": "files", "path": "/app"})

{"total_count": 0}

<think>The /app directory appears to be empty. Let me check if there are any files in the current directory.</think>

→ search_files({"target": "files", "path": "."})

{"bytes_written": 1104, "dirs_created": true}

<think>It seems the directory is empty. Let me create a sample input file to work with, then implement the canonicalizer. I'll create a sample input.txt file with the required format.</think>

→ write_file({"path": "/app/input.txt", "content": "/api/users GET admin ALLOW\n/api/users/{id} GET admin ALLOW\n/api/users/{id} DELETE admin ALLOW\n/api/users POST user ALLOW\n/api/users/{id} PUT user ALLOW\n/api/users/{id} PATCH user ALLOW\n/api/products GET admin ALLOW\n/api/products/{id} GET admin ALLOW\n/api/products/{id} DELETE admin ALLOW\n/api/orders GET admin ALLOW\n/api/orders/{id} GET admin ALLOW\n/…)

{"bytes_written": 10250, "dirs_created": true}

<think>Good, I've created a sample input file. Now let me implement the canonicalizer.py script that will process this input according to the specifications. The script needs to:

1. Parse the three sections with hard cutoff parsing
2. Apply base path filtering
3. Apply role exclusion filtering with inheritance exceptions
4. Apply PLAN filtering with parent path inheritance
5. Normalize paths for matching but preserve original variable names
6. Apply permission precedence and deduplication
7. Order by path specificity, method, role, permission
8. Write the output

Let me implement this step by step.</think>

→ write_file({"path": "/app/canonicalize.py", "content": "import re\nimport sys\nfrom typing import List, Tuple, Set, Dict, Optional\n\ndef parse_input_sections(content: str) -> Tuple[List[Tuple[str, str, str, str]], Tuple[str, List[str]], List[Tuple[str, str]]]:\n    \"\"\"Parse input into three sections with hard cutoff parsing\"\"\"\n    lines = [line.strip() for line in content.split('\\n') if line.strip()…)

{"output": "", "exit_code": 0, "error": null}

<think>Now let me run the canonicalizer to process the input file and generate the output.</think>

→ terminal({"command": "cd /app && python canonicalize.py"})

{"content": "     1|/api/users GET admin ALLOW\n     2|/api/products GET admin ALLOW\n     3|/api/orders GET admin ALLOW\n     4|/api/users POST user ALLOW\n     5|/api/users/{id} DELETE admin ALLOW\n     6|/api/products/{id} DELETE admin ALLOW\n     7|/api/orders/{id} DELETE admin ALLOW\n     8|/api/users/{id} GET admin ALLOW\n     9|/api/products/{id} GET admin ALLOW\n    10|/api/orders/{id} GET admin ALLOW\n    11|/api/admin/users GET admin ALLOW\n    12|/api/admin/products GET admin ALLOW\n    13|/api/admin/orders GET admin ALLOW\n    14|/api/public/info GET user ALLOW\n    15|/api/users/{id} PATCH user ALLOW\n    16|/api/public/info POST user DENY\n    17|/api/users/{id} PUT user ALLOW\n    18|/api/admin/users/{id} DELETE admin ALLOW\n    19|/api/admin/products/{id} DELETE admin ALLOW\n    20|/api/admin/orders/{id} DELETE admin ALLOW\n    21|/api/admin/users/{id} GET admin ALLOW\n    22|/api/admin/products/{id} GET admin ALLOW\n    23|/api/admin/orders/{id} GET admin ALLOW\n    24|", "total_lines": 23, "file_size": 797, "truncated": false, "is_binary": false, "is_image": false}

<think>The canonicalizer ran successfully. Now let me check the output file to see what was generated.</think>

→ read_file({"path": "/app/output.txt"})

{"bytes_written": 175, "dirs_created": true}

<think>The output looks good, but let me check if there are any issues with the implementation. Looking at the output, I can see that it includes endpoints for the 'user' role even though 'user' is in the exclude list. This suggests there might be an issue with the inheritance logic.

Let me analyze what should happen:
1. BASE: /api
2. EXCLUDE: user
3. PLAN: Contains various endpoints

According to the rules:
- When PLAN is not empty, excluded roles are filtered out unless needed for inheritance
- Parent paths are included for inheritance purposes

Looking at the PLAN endpoints, they are all GET requests to various paths. The inheritance logic should include parent paths, but it shouldn't include user role endpoints unless they're needed for inheritance.

Let me check if the implementation correctly handles the inheritance case. The issue might be that I'm including user role endpoints even when they're not needed for inheritance.

Let me create a more focused test case to debug this issue.</think>
Let me create a simpler test case to debug the inheritance logic:

→ write_file({"path": "/app/input.txt", "content": "/api/users GET admin ALLOW\n/api/users GET user ALLOW\n/api/users/{id} GET admin ALLOW\n/api/users/{id} GET user ALLOW\n\nbase /api\nexclude user\n\n/api/users GET\n/api/users/{id} GET"})

{"output": "", "exit_code": 0, "error": null}

<think>Now let me run the canonicalizer on this simpler test case to see if it correctly handles the exclusion logic.</think>

→ terminal({"command": "cd /app && python canonicalize.py"})

{"content": "     1|/api/users GET admin ALLOW\n     2|/api/users GET user ALLOW\n     3|/api/users/{id} GET admin ALLOW\n     4|/api/users/{id} GET user ALLOW\n     5|", "total_lines": 4, "file_size": 116, "truncated": false, "is_binary": false, "is_image": false}

<think>Let me check the output for this simpler test case.</think>

→ read_file({"path": "/app/output.txt"})

{"bytes_written": 11834, "dirs_created": true}

<think>I see the issue! The canonicalizer is including both admin and user role endpoints, but according to the rules, when PLAN is not empty, excluded roles should be filtered out unless needed for inheritance.

In this case, the PLAN contains `/api/users GET` and `/api/users/{id} GET`. The user role endpoints should be excluded unless they're needed for inheritance. But in this case, there are admin role endpoints for the same paths, so user role endpoints are not needed for inheritance.

Let me fix the canonicalizer logic. The issue is in the inheritance logic - I need to be more careful about when to include excluded roles.

Looking at the rules again:
"When PLAN is empty, excluded roles are always filtered out. When PLAN is not empty, excluded roles are filtered out unless needed for inheritance."

And:
"Special case: If a parent path has endpoints only for excluded roles, but those endpoints are needed for inheritance, include them ONLY if they are the only endpoints for that parent path AND the parent path is needed for inheritance."

I think the issue is in my inheritance logic. Let me revise the approach:

1. First, collect all the endpoints that should be included based on PLAN
2. Then add parent paths for inheritance
3. But exclude roles that are in the exclude list unless they're the only option for a parent path

Let me rewrite the canonicalizer with better logic.</think>

→ write_file({"path": "/app/canonicalize.py", "content": "import re\nimport sys\nfrom typing import List, Tuple, Set, Dict, Optional\n\ndef parse_input_sections(content: str) -> Tuple[List[Tuple[str, str, str, str]], Tuple[str, List[str]], List[Tuple[str, str]]]:\n    \"\"\"Parse input into three sections with hard cutoff parsing\"\"\"\n    lines = [line.strip() for line in content.split('\\n') if line.strip()…)

{"output": "", "exit_code": 0, "error": null}

<think>Now let me test the updated canonicalizer with the simple test case to see if it correctly excludes the 'user' role when not needed for inheritance.</think>

→ terminal({"command": "cd /app && python canonicalize.py"})

{"content": "     1|/api/users GET admin ALLOW\n     2|/api/users GET user ALLOW\n     3|/api/users/{id} GET admin ALLOW\n     4|/api/users/{id} GET user ALLOW\n     5|", "total_lines": 4, "file_size": 116, "truncated": false, "is_binary": false, "is_image": false}

<think>Let me check the output for the simple test case.</think>

→ read_file({"path": "/app/output.txt"})

{"bytes_written": 11092, "dirs_created": true}

<think>The issue persists. The user role endpoints are still being included even when they shouldn't be needed for inheritance. Let me analyze the problem more carefully.

Looking at the simple test case:
- PLAN contains `/api/users GET` and `/api/users/{id} GET`
- There are admin role endpoints for both of these paths
- The user role endpoints should not be included because there are admin role endpoints available

The problem is in my inheritance logic. I need to rethink this:

1. First, collect all the endpoints that match PLAN exactly
2. Then, for each PLAN endpoint, find parent paths and include endpoints for those parent paths
3. But only include excluded role endpoints if they're the ONLY endpoints available for a parent path

Let me rewrite the logic more carefully:

1. Create a set of all endpoints that should be included
2. Start with PLAN matches (non-excluded roles)
3. Then add parent paths - but only include endpoints that are not excluded, OR if all endpoints for a parent path are excluded
4. The key insight is: if there are non-excluded endpoints for a parent path, we should only use those, not the excluded ones

Let me fix this step by step.</think>

→ write_file({"path": "/app/canonicalize.py", "content": "import re\nimport sys\nfrom typing import List, Tuple, Set, Dict, Optional\n\ndef parse_input_sections(content: str) -> Tuple[List[Tuple[str, str, str, str]], Tuple[str, List[str]], List[Tuple[str, str]]]:\n    \"\"\"Parse input into three sections with hard cutoff parsing\"\"\"\n    lines = [line.strip() for line in content.split('\\n') if line.strip()…)

{"output": "", "exit_code": 0, "error": null}

<think>Let me test the updated canonicalizer with the simple test case.</think>

→ terminal({"command": "cd /app && python canonicalize.py"})

{"content": "     1|/api/users GET admin ALLOW\n     2|/api/users GET user ALLOW\n     3|/api/users/{id} GET admin ALLOW\n     4|/api/users/{id} GET user ALLOW\n     5|", "total_lines": 4, "file_size": 116, "truncated": false, "is_binary": false, "is_image": false}

<think>Let me check the output for the simple test case.</think>

→ read_file({"path": "/app/output.txt"})