blob: c22c44f3c7e34c94f421dab1c6ac4fa427626a87 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
#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);
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 = decompressXZ(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);
}
}
}
|
