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Add EvalState::allowAndSetStorePathString helper

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This switches addPath from `printStorePath` to `toRealPath`.
This commit is contained in:
Robert Hensing 2022-02-27 15:59:34 +01:00
parent 158280d8e9
commit ee019d0afc
4 changed files with 18 additions and 19 deletions
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8
src/libexpr/eval.cc
View file

@ -517,6 +517,14 @@ void EvalState::allowPath(const StorePath & storePath)
allowedPaths->insert(store->toRealPath(storePath));
}
void EvalState::allowAndSetStorePathString(const StorePath &storePath, Value &v)
{
allowPath(storePath);
auto path = store->printStorePath(storePath);
v.mkString(path, PathSet({path}));
}
Path EvalState::checkSourcePath(const Path & path_)
{
if (!allowedPaths) return path_;

3
src/libexpr/eval.hh
View file

@ -161,6 +161,9 @@ public:
the real store path if `store` is a chroot store. */
void allowPath(const StorePath & storePath);
/* Allow access to a store path and return it as a string. */
void allowAndSetStorePathString(const StorePath & storePath, Value &v);
/* Check whether access to a path is allowed and throw an error if
not. Otherwise return the canonicalised path. */
Path checkSourcePath(const Path & path);

15
src/libexpr/primops.cc
View file

@ -1919,20 +1919,15 @@ static void addPath(
if (expectedHash)
expectedStorePath = state.store->makeFixedOutputPath(method, *expectedHash, name);
Path dstPath;
if (!expectedHash || !state.store->isValidPath(*expectedStorePath)) {
dstPath = state.store->printStorePath(settings.readOnlyMode
StorePath dstPath = settings.readOnlyMode
? state.store->computeStorePathForPath(name, path, method, htSHA256, filter).first
: state.store->addToStore(name, path, method, htSHA256, filter, state.repair, refs));
if (expectedHash && expectedStorePath != state.store->parseStorePath(dstPath))
: state.store->addToStore(name, path, method, htSHA256, filter, state.repair, refs);
if (expectedHash && expectedStorePath != dstPath)
throw Error("store path mismatch in (possibly filtered) path added from '%s'", path);
state.allowAndSetStorePathString(dstPath, v);
} else
dstPath = state.store->printStorePath(*expectedStorePath);
v.mkString(dstPath, {dstPath});
state.allowPath(dstPath);
state.allowAndSetStorePathString(*expectedStorePath, v);
} catch (Error & e) {
e.addTrace(pos, "while adding path '%s'", path);
throw;

11
src/libexpr/primops/fetchTree.cc
View file

@ -185,13 +185,6 @@ static void prim_fetchTree(EvalState & state, const Pos & pos, Value * * args, V
// FIXME: document
static RegisterPrimOp primop_fetchTree("fetchTree", 1, prim_fetchTree);
static void setStorePath(EvalState &state, const StorePath &storePath, Value &v) {
state.allowPath(storePath);
auto path = state.store->printStorePath(storePath);
v.mkString(path, PathSet({path}));
}
static void fetch(EvalState & state, const Pos & pos, Value * * args, Value & v,
const std::string & who, bool unpack, std::string name)
{
@ -248,7 +241,7 @@ static void fetch(EvalState & state, const Pos & pos, Value * * args, Value & v,
auto validPaths = state.store->queryValidPaths({expectedPath}, NoSubstitute);
if (!validPaths.empty()) {
setStorePath(state, expectedPath, v);
state.allowAndSetStorePathString(expectedPath, v);
return;
}
}
@ -267,7 +260,7 @@ static void fetch(EvalState & state, const Pos & pos, Value * * args, Value & v,
*url, expectedHash->to_string(Base32, true), hash.to_string(Base32, true));
}
setStorePath(state, storePath, v);
state.allowAndSetStorePathString(storePath, v);
}
static void prim_fetchurl(EvalState & state, const Pos & pos, Value * * args, Value & v)