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Merge pull request #5346 from edolstra/allow-path

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Allow access to path copied to the store
This commit is contained in:
Eelco Dolstra 2021-10-07 12:53:21 +02:00 committed by GitHub
commit 302c3a052a
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GPG key ID: 4AEE18F83AFDEB23
7 changed files with 22 additions and 17 deletions
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13
src/libexpr/eval.cc
View file

@ -445,12 +445,12 @@ EvalState::EvalState(
StorePathSet closure;
store->computeFSClosure(store->toStorePath(r.second).first, closure);
for (auto & path : closure)
allowedPaths->insert(store->printStorePath(path));
allowPath(store->printStorePath(path));
} catch (InvalidPath &) {
allowedPaths->insert(r.second);
allowPath(r.second);
}
} else
allowedPaths->insert(r.second);
allowPath(r.second);
}
}
@ -482,6 +482,12 @@ void EvalState::requireExperimentalFeatureOnEvaluation(
}
}
void EvalState::allowPath(const Path & path)
{
if (allowedPaths)
allowedPaths->insert(path);
}
Path EvalState::checkSourcePath(const Path & path_)
{
if (!allowedPaths) return path_;
@ -1891,6 +1897,7 @@ string EvalState::copyPathToStore(PathSet & context, const Path & path)
dstPath = store->printStorePath(p);
srcToStore.insert_or_assign(path, std::move(p));
printMsg(lvlChatty, "copied source '%1%' -> '%2%'", path, dstPath);
allowPath(dstPath);
}
context.insert(dstPath);

5
src/libexpr/eval.hh
View file

@ -150,6 +150,11 @@ public:
SearchPath getSearchPath() { return searchPath; }
/* Allow access to a path. */
void allowPath(const Path & path);
/* Check whether access to a path is allowed and throw an error if
not. Otherwise return the canonicalised path. */
Path checkSourcePath(const Path & path);
void checkURI(const std::string & uri);

3
src/libexpr/flake/flake.cc
View file

@ -64,8 +64,7 @@ static std::tuple<fetchers::Tree, FlakeRef, FlakeRef> fetchOrSubstituteTree(
debug("got tree '%s' from '%s'",
state.store->printStorePath(tree.storePath), lockedRef);
if (state.allowedPaths)
state.allowedPaths->insert(tree.actualPath);
state.allowPath(tree.actualPath);
assert(!originalRef.input.getNarHash() || tree.storePath == originalRef.input.computeStorePath(*state.store));

3
src/libexpr/primops.cc
View file

@ -1892,8 +1892,7 @@ static void addPath(EvalState & state, const Pos & pos, const string & name, con
mkString(v, dstPath, {dstPath});
if (state.allowedPaths)
state.allowedPaths->insert(v.string.s);
state.allowPath(v.string.s);
}

3
src/libexpr/primops/fetchMercurial.cc
View file

@ -84,8 +84,7 @@ static void prim_fetchMercurial(EvalState & state, const Pos & pos, Value * * ar
mkInt(*state.allocAttr(v, state.symbols.create("revCount")), *revCount);
v.attrs->sort();
if (state.allowedPaths)
state.allowedPaths->insert(tree.actualPath);
state.allowPath(tree.actualPath);
}
static RegisterPrimOp r_fetchMercurial("fetchMercurial", 1, prim_fetchMercurial);

6
src/libexpr/primops/fetchTree.cc
View file

@ -169,8 +169,7 @@ static void fetchTree(
auto [tree, input2] = input.fetch(state.store);
if (state.allowedPaths)
state.allowedPaths->insert(tree.actualPath);
state.allowPath(tree.actualPath);
emitTreeAttrs(state, tree, input2, v, params.emptyRevFallback, false);
}
@ -245,8 +244,7 @@ static void fetch(EvalState & state, const Pos & pos, Value * * args, Value & v,
*url, expectedHash->to_string(Base32, true), hash.to_string(Base32, true));
}
if (state.allowedPaths)
state.allowedPaths->insert(realPath);
state.allowPath(realPath);
auto path = state.store->printStorePath(storePath);
mkString(v, path, PathSet({path}));

6
src/nix/profile.cc
View file

@ -98,10 +98,8 @@ struct ProfileManifest
else if (pathExists(profile + "/manifest.nix")) {
// FIXME: needed because of pure mode; ugly.
if (state.allowedPaths) {
state.allowedPaths->insert(state.store->followLinksToStore(profile));
state.allowedPaths->insert(state.store->followLinksToStore(profile + "/manifest.nix"));
}
state.allowPath(state.store->followLinksToStore(profile));
state.allowPath(state.store->followLinksToStore(profile + "/manifest.nix"));
auto drvInfos = queryInstalled(state, state.store->followLinksToStore(profile));