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24bda0c7b3
This has been the behaviour before Nix 2.4. It was dropped in a rewrite
in 759947bf72, allowing the creation of
store paths that aren't considered valid by older Nix versions or other
Nix tooling.
Nix 2.4 didn't ship in NixOS until 22.05, and stdenv.mkDerivation in
nixpkgs drops leading periods since April 2022, so it's unlikely anyone
is relying on the current lax behaviour.
Closes #9091.
Change-Id: I4a57bd9899e1b0dba56870ae5a1b680918a18ce9
98 lines
2.8 KiB
C++
98 lines
2.8 KiB
C++
#include "store-api.hh"
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#include <sodium.h>
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namespace nix {
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static void checkName(std::string_view path, std::string_view name)
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{
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if (name.empty())
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throw BadStorePath("store path '%s' has an empty name", path);
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if (name.size() > StorePath::MaxPathLen)
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throw BadStorePath("store path '%s' has a name longer than %d characters",
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path, StorePath::MaxPathLen);
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if (name[0] == '.')
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throw BadStorePath("store path '%s' starts with illegal character '.'", path);
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// See nameRegexStr for the definition
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for (auto c : name)
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if (!((c >= '0' && c <= '9')
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|| (c >= 'a' && c <= 'z')
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|| (c >= 'A' && c <= 'Z')
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|| c == '+' || c == '-' || c == '.' || c == '_' || c == '?' || c == '='))
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throw BadStorePath("store path '%s' contains illegal character '%s'", path, c);
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}
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StorePath::StorePath(std::string_view _baseName)
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: baseName(_baseName)
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{
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if (baseName.size() < HashLen + 1)
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throw BadStorePath("'%s' is too short to be a valid store path", baseName);
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for (auto c : hashPart())
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if (c == 'e' || c == 'o' || c == 'u' || c == 't'
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|| !((c >= '0' && c <= '9') || (c >= 'a' && c <= 'z')))
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throw BadStorePath("store path '%s' contains illegal base-32 character '%s'", baseName, c);
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checkName(baseName, name());
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}
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StorePath::StorePath(const Hash & hash, std::string_view _name)
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: baseName((hash.to_string(Base32, false) + "-").append(std::string(_name)))
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{
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checkName(baseName, name());
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}
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bool StorePath::isDerivation() const
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{
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return hasSuffix(name(), drvExtension);
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}
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StorePath StorePath::dummy("ffffffffffffffffffffffffffffffff-x");
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StorePath StorePath::random(std::string_view name)
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{
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Hash hash(htSHA1);
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randombytes_buf(hash.hash, hash.hashSize);
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return StorePath(hash, name);
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}
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StorePath Store::parseStorePath(std::string_view path) const
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{
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auto p = canonPath(std::string(path));
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if (dirOf(p) != storeDir)
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throw BadStorePath("path '%s' is not in the Nix store", p);
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return StorePath(baseNameOf(p));
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}
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std::optional<StorePath> Store::maybeParseStorePath(std::string_view path) const
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{
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try {
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return parseStorePath(path);
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} catch (Error &) {
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return {};
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}
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}
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bool Store::isStorePath(std::string_view path) const
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{
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return (bool) maybeParseStorePath(path);
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}
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StorePathSet Store::parseStorePathSet(const PathSet & paths) const
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{
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StorePathSet res;
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for (auto & i : paths) res.insert(parseStorePath(i));
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return res;
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}
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std::string Store::printStorePath(const StorePath & path) const
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{
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return (storeDir + "/").append(path.to_string());
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}
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PathSet Store::printStorePathSet(const StorePathSet & paths) const
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{
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PathSet res;
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for (auto & i : paths) res.insert(printStorePath(i));
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return res;
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}
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}
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