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CPX-632: configure CSP frame-ancestors #56

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CPX-632: configure CSP frame-ancestors #56

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35 changes: 28 additions & 7 deletions src/middleware.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -9,17 +9,38 @@ const csrfProtect = csrf({
});

export async function middleware(request: NextRequest) {
const response = NextResponse.next();
const cspHeader = `
frame-ancestors: 'https://store-*.mybigcommerce.com'
'https://store-*.my-integration.zone'
'https://store-*.my-staging.zone';
`;
const contentSecurityPolicyHeaderValue = cspHeader
.replace(/\s{2,}/g, ' ')
.trim();

const requestHeaders = new Headers(request.headers);

requestHeaders.set(
'Content-Security-Policy',
contentSecurityPolicyHeaderValue
);

const response = NextResponse.next({
request: {
headers: requestHeaders,
},
});

const csrfError = await csrfProtect(request, response);

if (csrfError) {
return new NextResponse('invalid csrf token', { status: 403 });
}

return response;
}

export const config = {
matcher: ['/productDescription/:productId*', '/api/generateDescription'],
}
response.headers.set(
'Content-Security-Policy',
contentSecurityPolicyHeaderValue
);

return response
}
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