106 lines
3.4 KiB
C++
106 lines
3.4 KiB
C++
#include "store-dir-config.hh"
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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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// See nameRegexStr for the definition
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if (name[0] == '.') {
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// check against "." and "..", followed by end or dash
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if (name.size() == 1)
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throw BadStorePath("store path '%s' has invalid name '%s'", path, name);
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if (name[1] == '-')
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throw BadStorePath("store path '%s' has invalid name '%s': first dash-separated component must not be '%s'", path, name, ".");
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if (name[1] == '.') {
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if (name.size() == 2)
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throw BadStorePath("store path '%s' has invalid name '%s'", path, name);
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if (name[2] == '-')
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throw BadStorePath("store path '%s' has invalid name '%s': first dash-separated component must not be '%s'", path, name, "..");
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}
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}
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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(HashFormat::Nix32, 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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return StorePath(Hash::random(HashAlgorithm::SHA1), name);
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}
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StorePath StoreDirConfig::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> StoreDirConfig::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 StoreDirConfig::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 StoreDirConfig::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 StoreDirConfig::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 StoreDirConfig::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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