mirror of
https://github.com/NixOS/nix
synced 2024-09-20 23:28:26 -04:00
69 lines
2.1 KiB
C++
69 lines
2.1 KiB
C++
#include "builtins.hh"
|
||
#include "download.hh"
|
||
#include "store-api.hh"
|
||
#include "archive.hh"
|
||
#include "compression.hh"
|
||
|
||
namespace nix {
|
||
|
||
void builtinFetchurl(const BasicDerivation & drv, const std::string & netrcData)
|
||
{
|
||
/* Make the host's netrc data available. Too bad curl requires
|
||
this to be stored in a file. It would be nice if we could just
|
||
pass a pointer to the data. */
|
||
if (netrcData != "") {
|
||
settings.netrcFile = "netrc";
|
||
writeFile(settings.netrcFile, netrcData, 0600);
|
||
}
|
||
|
||
auto getAttr = [&](const string & name) {
|
||
auto i = drv.env.find(name);
|
||
if (i == drv.env.end()) throw Error(format("attribute ‘%s’ missing") % name);
|
||
return i->second;
|
||
};
|
||
|
||
auto fetch = [&](const string & url) {
|
||
/* No need to do TLS verification, because we check the hash of
|
||
the result anyway. */
|
||
DownloadRequest request(url);
|
||
request.verifyTLS = false;
|
||
|
||
/* Note: have to use a fresh downloader here because we're in
|
||
a forked process. */
|
||
auto data = makeDownloader()->download(request);
|
||
assert(data.data);
|
||
|
||
return data.data;
|
||
};
|
||
|
||
std::shared_ptr<std::string> data;
|
||
|
||
try {
|
||
if (getAttr("outputHashMode") == "flat")
|
||
data = fetch("http://tarballs.nixos.org/" + getAttr("outputHashAlgo") + "/" + getAttr("outputHash"));
|
||
} catch (Error & e) {
|
||
debug(e.what());
|
||
}
|
||
|
||
if (!data) data = fetch(getAttr("url"));
|
||
|
||
Path storePath = getAttr("out");
|
||
|
||
auto unpack = drv.env.find("unpack");
|
||
if (unpack != drv.env.end() && unpack->second == "1") {
|
||
if (string(*data, 0, 6) == string("\xfd" "7zXZ\0", 6))
|
||
data = decompress("xz", *data);
|
||
StringSource source(*data);
|
||
restorePath(storePath, source);
|
||
} else
|
||
writeFile(storePath, *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);
|
||
}
|
||
}
|
||
|
||
}
|