Félix Malfait 3bd431e95d Use proper PostgreSQL identifier/literal escaping in workspace DDL (#18024)
## Summary

- Replace the character-stripping approach (`removeSqlDDLInjection`)
with standard PostgreSQL `escapeIdentifier` and `escapeLiteral`
functions across all workspace schema manager services
- Add missing identifier escaping to `createForeignKey` (was the only
method in the FK manager without it)
- Add allowlist validation for index WHERE clauses and FK action types
- Harden tsvector expression builder with proper identifier quoting

## Context

The workspace schema managers build DDL dynamically from metadata (table
names, column names, enum values, etc.). The previous approach stripped
all non-alphanumeric characters — safe but lossy (silently corrupts
values with legitimate special characters). The new approach uses
PostgreSQL's standard escaping:

- **Identifiers**: double internal `"` and wrap → `"my""table"` (same
algorithm as `pg` driver's `escapeIdentifier`)
- **Literals**: double internal `'` and wrap → `'it''s a value'` (same
algorithm as `pg` driver's `escapeLiteral`)

`removeSqlDDLInjection` is kept only for name generation (e.g.,
`computePostgresEnumName`) where stripping to `[a-zA-Z0-9_]` is the
correct behavior.

## Files changed

| File | What |
|------|------|
| `remove-sql-injection.util.ts` | Added `escapeIdentifier` +
`escapeLiteral` |
| `validate-index-where-clause.util.ts` | New — allowlist for partial
index WHERE clauses |
| 5 schema manager services | Replaced strip+manual-quote with
`escapeIdentifier`/`escapeLiteral` |
| `build-sql-column-definition.util.ts` | `escapeIdentifier` for column
names, validated `generatedType` |
| `sanitize-default-value.util.ts` | `escapeLiteral` instead of
stripping |
| `serialize-default-value.util.ts` | `escapeLiteral` for values,
`escapeIdentifier` for enum casts |
| `get-ts-vector-column-expression.util.ts` | `escapeIdentifier` for
field names in expressions |
| `sanitize-default-value.util.spec.ts` | Updated tests for escape
behavior |

## Test plan

- [x] All 64 existing tests pass across 6 test suites
- [x] `lint:diff-with-main` passes
- [x] TypeScript typecheck — no new errors
- [ ] Verify workspace sync-metadata still works end-to-end
- [ ] Verify custom object/field creation works
- [ ] Verify enum field option changes work


Made with [Cursor](https://cursor.com)

---------

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-02-18 14:24:10 +00:00
2025-08-07 17:02:12 +02:00
2025-07-08 15:13:02 +02:00
2026-02-17 18:45:52 +01:00

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