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#include "builtins.hh"
#include "download.hh"
#include "store-api.hh"
#include "archive.hh"
#include "compression.hh"
namespace nix {
void builtinFetchurl(const BasicDerivation & drv)
{
auto url = drv.env.find("url");
if (url == drv.env.end()) throw Error("attribute ‘url’ missing");
/* No need to do TLS verification, because we check the hash of
the result anyway. */
DownloadOptions options;
options.verifyTLS = false;
/* Show a progress indicator, even though stderr is not a tty. */
options.showProgress = DownloadOptions::yes;
auto data = makeDownloader()->download(url->second, options);
assert(data.data);
auto out = drv.env.find("out");
if (out == drv.env.end()) throw Error("attribute ‘url’ missing");
Path storePath = out->second;
assertStorePath(storePath);
auto unpack = drv.env.find("unpack");
if (unpack != drv.env.end() && unpack->second == "1") {
if (string(*data.data, 0, 6) == string("\xfd" "7zXZ\0", 6))
data.data = decompress("xz", *data.data);
StringSource source(*data.data);
restorePath(storePath, source);
} else
writeFile(storePath, *data.data);
auto executable = drv.env.find("executable");
if (executable != drv.env.end() && executable->second == "1") {
if (chmod(storePath.c_str(), 0755) == -1)
throw SysError(format("making ‘%1%’ executable") % storePath);
}
}
}
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