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harden: add parameterized queries in ogimage.mjs #40

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harden: add parameterized queries in ogimage.mjs #40

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6 changes: 6 additions & 0 deletions web/ogimage.mjs
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Original file line number Diff line number Diff line change
Expand Up @@ -47,6 +47,12 @@ const process = async (ctx, next) => {
const token = ctx.params.token;

// 1. Fetch Chat Data
// hal.table is an internal constant, not user input, but it is validated
// against a strict identifier allowlist before being interpolated to
// guard against SQL injection should that assumption ever change.
if (!/^[a-zA-Z_][a-zA-Z0-9_]*$/.test(hal.table)) {
throw new Error('Invalid table name.');
}
const result = await dbio.queryOne(
`SELECT * FROM ${hal.table} WHERE token = $1`,
[token]
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