fix(schema): add auth challenges and rate limiting tables and OCC RPCs - #217
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| INSERT INTO public.auth_challenges (nonce, address, expiration) | ||
| VALUES (p_nonce, p_address, p_expiration); |
There was a problem hiding this comment.
Suggestion: The public challenge-recording RPC accepts arbitrary addresses and non-expiring timestamps, allowing one persistent row per new address and unbounded table growth. [resource leak]
Assessment: 🟠 Major · 🔁 Occurrence: Sometimes
Prompt for AI Agent 🤖
This is a comment left during a code review.
**Path:** supabase-setup.sql
**Line:** 1334:1335
**Comment:**
*Resource Leak: The public challenge-recording RPC accepts arbitrary addresses and non-expiring timestamps, allowing one persistent row per new address and unbounded table growth.
Validate the correctness of the flagged issue. If correct, How can I resolve this? If you propose a fix, implement it and please make it concise.
Once fix is implemented, also check other comments on the same PR, and ask user if the user wants to fix the rest of the comments as well. if said yes, then fetch all the comments validate the correctness and implement a minimal fix
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| INSERT INTO public.auth_rate_limits (key, count, window_start, updated_at) | ||
| VALUES (p_key, 1, p_now, NOW()) | ||
| ON CONFLICT (key) DO UPDATE | ||
| SET count = 1, window_start = p_now, updated_at = NOW(); |
There was a problem hiding this comment.
Suggestion: The public rate-limit RPC inserts a permanent row for every new p_key, allowing unauthenticated callers to grow this table and its index without bound. [resource leak]
Assessment: 🟠 Major · 🔁 Occurrence: Sometimes
Prompt for AI Agent 🤖
This is a comment left during a code review.
**Path:** supabase-setup.sql
**Line:** 1390:1393
**Comment:**
*Resource Leak: The public rate-limit RPC inserts a permanent row for every new `p_key`, allowing unauthenticated callers to grow this table and its index without bound.
Validate the correctness of the flagged issue. If correct, How can I resolve this? If you propose a fix, implement it and please make it concise.
Once fix is implemented, also check other comments on the same PR, and ask user if the user wants to fix the rest of the comments as well. if said yes, then fetch all the comments validate the correctness and implement a minimal fix| $fn$; | ||
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| GRANT EXECUTE ON FUNCTION public.record_auth_challenge(TEXT, TEXT, BIGINT, INT) TO anon, authenticated; | ||
| GRANT EXECUTE ON FUNCTION public.consume_auth_challenge(TEXT, TEXT, BIGINT, BIGINT) TO anon, authenticated; |
There was a problem hiding this comment.
Suggestion: anon can call consume_auth_challenge with values from the challenge response and delete the challenge before the signed verification request consumes it. [security]
Assessment: 🟠 Major · 🔁 Occurrence: Sometimes
Prompt for AI Agent 🤖
This is a comment left during a code review.
**Path:** supabase-setup.sql
**Line:** 1423:1423
**Comment:**
*Security: `anon` can call `consume_auth_challenge` with values from the challenge response and delete the challenge before the signed verification request consumes it.
Validate the correctness of the flagged issue. If correct, How can I resolve this? If you propose a fix, implement it and please make it concise.
Once fix is implemented, also check other comments on the same PR, and ask user if the user wants to fix the rest of the comments as well. if said yes, then fetch all the comments validate the correctness and implement a minimal fix
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User description
close #204
CodeAnt-AI Description
Add shared authentication challenge storage and request rate limiting
What Changed
Impact
✅ Consistent authentication across application instances✅ Fewer replayed or stale login challenges✅ Clearer rate-limit decisions💡 Usage Guide
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