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Merge pull request #9867 from hercules-ci/issue-912

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#912 allow leading period
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Robert Hensing 2024-01-31 19:10:59 +01:00 • committed by GitHub
commit 4072a8fea0
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6 changed files with 146 additions and 47 deletions
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7
src/libstore/path-regex.hh
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@ -3,6 +3,11 @@
namespace nix {
static constexpr std::string_view nameRegexStr = R"([0-9a-zA-Z\+\-_\?=][0-9a-zA-Z\+\-\._\?=]*)";
static constexpr std::string_view nameRegexStr =
// This uses a negative lookahead: (?!\.\.?(-|$))
// - deny ".", "..", or those strings followed by '-'
// - when it's not those, start again at the start of the input and apply the next regex, which is [0-9a-zA-Z\+\-\._\?=]+
R"((?!\.\.?(-|$))[0-9a-zA-Z\+\-\._\?=]+)";
}

15
src/libstore/path.cc
View file

@ -9,9 +9,20 @@ static void checkName(std::string_view path, std::string_view name)
if (name.size() > StorePath::MaxPathLen)
throw BadStorePath("store path '%s' has a name longer than %d characters",
path, StorePath::MaxPathLen);
if (name[0] == '.')
throw BadStorePath("store path '%s' starts with illegal character '.'", path);
// See nameRegexStr for the definition
if (name[0] == '.') {
// check against "." and "..", followed by end or dash
if (name.size() == 1)
throw BadStorePath("store path '%s' has invalid name '%s'", path, name);
if (name[1] == '-')
throw BadStorePath("store path '%s' has invalid name '%s': first dash-separated component must not be '%s'", path, name, ".");
if (name[1] == '.') {
if (name.size() == 2)
throw BadStorePath("store path '%s' has invalid name '%s'", path, name);
if (name[2] == '-')
throw BadStorePath("store path '%s' has invalid name '%s': first dash-separated component must not be '%s'", path, name, "..");
}
}
for (auto c : name)
if (!((c >= '0' && c <= '9')
|| (c >= 'a' && c <= 'z')