diff options
Diffstat (limited to 'src/libfetchers/path.cc')
| -rw-r--r-- | src/libfetchers/path.cc | 178 |
1 files changed, 59 insertions, 119 deletions
diff --git a/src/libfetchers/path.cc b/src/libfetchers/path.cc index 77fe87d59..cbbb0fa02 100644 --- a/src/libfetchers/path.cc +++ b/src/libfetchers/path.cc @@ -3,76 +3,86 @@ namespace nix::fetchers { -struct PathInput : Input +struct PathInputScheme : InputScheme { - Path path; + std::optional<Input> inputFromURL(const ParsedURL & url) override + { + if (url.scheme != "path") return {}; - /* Allow the user to pass in "fake" tree info attributes. This is - useful for making a pinned tree work the same as the repository - from which is exported - (e.g. path:/nix/store/...-source?lastModified=1585388205&rev=b0c285...). */ - std::optional<Hash> rev; - std::optional<uint64_t> revCount; - std::optional<time_t> lastModified; + if (url.authority && *url.authority != "") + throw Error("path URL '%s' should not have an authority ('%s')", url.url, *url.authority); - std::string type() const override { return "path"; } + Input input; + input.attrs.insert_or_assign("type", "path"); + input.attrs.insert_or_assign("path", url.path); - std::optional<Hash> getRev() const override { return rev; } + for (auto & [name, value] : url.query) + if (name == "rev" || name == "narHash") + input.attrs.insert_or_assign(name, value); + else if (name == "revCount" || name == "lastModified") { + uint64_t n; + if (!string2Int(value, n)) + throw Error("path URL '%s' has invalid parameter '%s'", url.to_string(), name); + input.attrs.insert_or_assign(name, n); + } + else + throw Error("path URL '%s' has unsupported parameter '%s'", url.to_string(), name); - bool operator ==(const Input & other) const override - { - auto other2 = dynamic_cast<const PathInput *>(&other); - return - other2 - && path == other2->path - && rev == other2->rev - && revCount == other2->revCount - && lastModified == other2->lastModified; + return input; } - bool isImmutable() const override + std::optional<Input> inputFromAttrs(const Attrs & attrs) override { - return narHash || rev; + if (maybeGetStrAttr(attrs, "type") != "path") return {}; + + getStrAttr(attrs, "path"); + + for (auto & [name, value] : attrs) + /* Allow the user to pass in "fake" tree info + attributes. This is useful for making a pinned tree + work the same as the repository from which is exported + (e.g. path:/nix/store/...-source?lastModified=1585388205&rev=b0c285...). */ + if (name == "type" || name == "rev" || name == "revCount" || name == "lastModified" || name == "narHash" || name == "path") + // checked in Input::fromAttrs + ; + else + throw Error("unsupported path input attribute '%s'", name); + + Input input; + input.attrs = attrs; + return input; } - ParsedURL toURL() const override + ParsedURL toURL(const Input & input) override { - auto query = attrsToQuery(toAttrsInternal()); + auto query = attrsToQuery(input.attrs); query.erase("path"); + query.erase("type"); return ParsedURL { .scheme = "path", - .path = path, + .path = getStrAttr(input.attrs, "path"), .query = query, }; } - Attrs toAttrsInternal() const override + bool hasAllInfo(const Input & input) override { - Attrs attrs; - attrs.emplace("path", path); - if (rev) - attrs.emplace("rev", rev->gitRev()); - if (revCount) - attrs.emplace("revCount", *revCount); - if (lastModified) - attrs.emplace("lastModified", *lastModified); - if (!rev && narHash) - attrs.emplace("narHash", narHash->to_string(SRI)); - return attrs; + return true; } - std::optional<Path> getSourcePath() const override + std::optional<Path> getSourcePath(const Input & input) override { - return path; + return getStrAttr(input.attrs, "path"); } - void markChangedFile(std::string_view file, std::optional<std::string> commitMsg) const override + void markChangedFile(const Input & input, std::string_view file, std::optional<std::string> commitMsg) override { + // nothing to do } - std::pair<Tree, std::shared_ptr<const Input>> fetchTreeInternal(nix::ref<Store> store) const override + std::pair<Tree, Input> fetch(ref<Store> store, const Input & input) override { - auto input = std::make_shared<PathInput>(*this); + auto path = getStrAttr(input.attrs, "path"); // FIXME: check whether access to 'path' is allowed. @@ -85,83 +95,13 @@ struct PathInput : Input // FIXME: try to substitute storePath. storePath = store->addToStore("source", path); - input->narHash = store->queryPathInfo(*storePath)->narHash; - - return - { - Tree { - .actualPath = store->toRealPath(*storePath), - .storePath = std::move(*storePath), - .info = TreeInfo { - .revCount = revCount, - .lastModified = lastModified - } - }, - input - }; - } - -}; - -struct PathInputScheme : InputScheme -{ - std::unique_ptr<Input> inputFromURL(const ParsedURL & url) override - { - if (url.scheme != "path") return nullptr; - - auto input = std::make_unique<PathInput>(); - input->path = url.path; - - if (url.authority && *url.authority != "") - throw Error("path URL '%s' should not have an authority ('%s')", url.url, *url.authority); - - for (auto & [name, value] : url.query) - if (name == "rev") - input->rev = Hash(value, htSHA1); - else if (name == "revCount") { - uint64_t revCount; - if (!string2Int(value, revCount)) - throw Error("path URL '%s' has invalid parameter '%s'", url.to_string(), name); - input->revCount = revCount; - } - else if (name == "lastModified") { - time_t lastModified; - if (!string2Int(value, lastModified)) - throw Error("path URL '%s' has invalid parameter '%s'", url.to_string(), name); - input->lastModified = lastModified; - } - else if (name == "narHash") - // FIXME: require SRI hash. - input->narHash = Hash(value); - else - throw Error("path URL '%s' has unsupported parameter '%s'", url.to_string(), name); - - return input; - } - - std::unique_ptr<Input> inputFromAttrs(const Attrs & attrs) override - { - if (maybeGetStrAttr(attrs, "type") != "path") return {}; - - auto input = std::make_unique<PathInput>(); - input->path = getStrAttr(attrs, "path"); - - for (auto & [name, value] : attrs) - if (name == "rev") - input->rev = Hash(getStrAttr(attrs, "rev"), htSHA1); - else if (name == "revCount") - input->revCount = getIntAttr(attrs, "revCount"); - else if (name == "lastModified") - input->lastModified = getIntAttr(attrs, "lastModified"); - else if (name == "narHash") - // FIXME: require SRI hash. - input->narHash = Hash(getStrAttr(attrs, "narHash")); - else if (name == "type" || name == "path") - ; - else - throw Error("unsupported path input attribute '%s'", name); - - return input; + return { + Tree { + .actualPath = store->toRealPath(*storePath), + .storePath = std::move(*storePath), + }, + input + }; } }; |