forked from lix-project/lix
92 lines
2.4 KiB
C++
92 lines
2.4 KiB
C++
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#include "fetchers.hh"
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#include "download.hh"
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#include "globals.hh"
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#include "parse.hh"
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#include "store-api.hh"
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namespace nix::fetchers {
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struct TarballInput : Input
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{
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ParsedURL url;
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std::optional<Hash> hash;
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bool operator ==(const Input & other) const override
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{
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auto other2 = dynamic_cast<const TarballInput *>(&other);
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return
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other2
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&& to_string() == other2->to_string()
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&& hash == other2->hash;
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}
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bool isImmutable() const override
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{
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return (bool) hash;
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}
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std::string to_string() const override
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{
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auto url2(url);
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if (narHash)
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url2.query.insert_or_assign("narHash", narHash->to_string(SRI));
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return url2.to_string();
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}
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std::pair<Tree, std::shared_ptr<const Input>> fetchTreeInternal(nix::ref<Store> store) const override
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{
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CachedDownloadRequest request(url.to_string());
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request.unpack = true;
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request.getLastModified = true;
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request.name = "source";
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auto res = getDownloader()->downloadCached(store, request);
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auto input = std::make_shared<TarballInput>(*this);
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auto storePath = store->parseStorePath(res.storePath);
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input->narHash = store->queryPathInfo(storePath)->narHash;
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return {
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Tree {
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.actualPath = res.path,
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.storePath = std::move(storePath),
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.lastModified = *res.lastModified
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},
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input
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};
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}
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};
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struct TarballInputScheme : InputScheme
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{
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std::unique_ptr<Input> inputFromURL(const ParsedURL & url) override
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{
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if (url.scheme != "file" && url.scheme != "http" && url.scheme != "https") return nullptr;
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if (!hasSuffix(url.path, ".zip")
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&& !hasSuffix(url.path, ".tar")
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&& !hasSuffix(url.path, ".tar.gz")
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&& !hasSuffix(url.path, ".tar.xz")
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&& !hasSuffix(url.path, ".tar.bz2"))
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return nullptr;
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auto input = std::make_unique<TarballInput>();
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input->type = "tarball";
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input->url = url;
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auto narHash = url.query.find("narHash");
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if (narHash != url.query.end()) {
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// FIXME: require SRI hash.
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input->narHash = Hash(narHash->second);
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}
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return input;
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}
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};
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static auto r1 = OnStartup([] { registerInputScheme(std::make_unique<TarballInputScheme>()); });
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}
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