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checkURI(): Check file URIs against allowedPaths

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This makes e.g. 'fetchGit ./.' work (assuming that ./. is an allowed
path).
This commit is contained in:
Eelco Dolstra 2018-02-06 14:35:14 +01:00
parent f539085e65
commit f24e726ba5
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1 changed files with 12 additions and 0 deletions
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12
src/libexpr/eval.cc
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@ -378,6 +378,18 @@ void EvalState::checkURI(const std::string & uri)
&& (prefix[prefix.size() - 1] == '/' || uri[prefix.size()] == '/'))) && (prefix[prefix.size() - 1] == '/' || uri[prefix.size()] == '/')))
return; return;
/* If the URI is a path, then check it against allowedPaths as
well. */
if (hasPrefix(uri, "/")) {
checkSourcePath(uri);
return;
}
if (hasPrefix(uri, "file://")) {
checkSourcePath(std::string(uri, 7));
return;
}
throw RestrictedPathError("access to URI '%s' is forbidden in restricted mode", uri); throw RestrictedPathError("access to URI '%s' is forbidden in restricted mode", uri);
} }