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Deduplicate basic derivation goals too

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See comments for security concerns.

Also optimize goal creation by not traversing map twice.
This commit is contained in:
John Ericson 2020-08-22 20:44:47 +00:00
parent 980edd1f3a
commit 993229cdaf
3 changed files with 110 additions and 30 deletions
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14
src/libstore/daemon.cc
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@ -546,6 +546,20 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
are in fact content-addressed if we don't trust them. */
assert(derivationIsCA(drv.type()) || trusted);
/* Recompute the derivation path when we cannot trust the original. */
if (!trusted) {
/* Recomputing the derivation path for input-address derivations
makes it harder to audit them after the fact, since we need the
original not-necessarily-resolved derivation to verify the drv
derivation as adequate claim to the input-addressed output
paths. */
assert(derivationIsCA(drv.type()));
Derivation drv2;
static_cast<BasicDerivation &>(drv2) = drv;
drvPath = writeDerivation(*store, Derivation { drv2 });
}
auto res = store->buildDerivation(drvPath, drv, buildMode);
logger->stopWork();
to << res.status << res.errorMsg;