private bool DoDownload(PackageDownload download, out string tempdir, out string filename, Request request)
{
bool created = false;
tempdir = "";
while (!created)
{
tempdir = Path.GetTempPath() + Guid.NewGuid().ToString();
if (Win32CreateDirectory(tempdir, IntPtr.Zero))
{
created = true;
}
else
{
if (Marshal.GetLastWin32Error() != 183) // ERROR_ALREADY_EXISTS
{
throw new Win32Exception();
}
}
}
filename = Path.Combine(tempdir, download.basename);
request.ProviderServices.DownloadFile(new Uri(download.url), filename, request);
if (!string.IsNullOrWhiteSpace(download.md5_digest))
{
request.Debug("expected md5sum: {0}", download.md5_digest);
using (FileStream fs = File.Open(filename, FileMode.Open, FileAccess.Read))
{
using (MD5 md5 = MD5.Create())
{
byte[] actual_hash = md5.ComputeHash(fs);
string actual_hash_string = hash_to_string(actual_hash);
request.Debug("actual md5sum: {0}", actual_hash_string);
if (actual_hash_string != download.md5_digest)
{
request.Error(ErrorCategory.MetadataError, name, "Downloaded file has incorrect MD5 sum");
File.Delete(filename);
Directory.Delete(tempdir);
return(false);
}
}
}
}
return(true);
}
private static PackageDownload[] ParseUrls(JToken token)
{
JArray urls = (JArray)token;
PackageDownload[] result = new PackageDownload[urls.Count];
for (int i = 0; i < urls.Count; i++)
{
JObject uri = (JObject)urls[i];
result[i].url = uri["url"].ToString();
result[i].basename = uri["filename"].ToString();
result[i].md5_digest = uri["md5_digest"].ToString();
result[i].packagetype = uri["packagetype"].ToString();
result[i].size = (long)uri["size"];
}
return(result);
}
private bool CanInstall(PythonInstall install, PackageDownload download, out bool install_specific, Request request)
{
install_specific = false;
if (download.packagetype == "bdist_wheel")
{
string tag = download.basename;
if (tag.EndsWith(".whl"))
{
tag = tag.Substring(0, tag.Length - 4);
}
int platform_dash = tag.LastIndexOf('-');
if (platform_dash <= 0)
{
return(false);
}
int abi_dash = tag.LastIndexOf('-', platform_dash - 1);
if (abi_dash <= 0)
{
return(false);
}
int python_dash = tag.LastIndexOf('-', abi_dash - 1);
if (python_dash <= 0)
{
return(false);
}
tag = tag.Substring(python_dash + 1);
install_specific = true;
if (install.CompatibleWithTag(tag))
{
return(true);
}
return(false);
}
else if (download.packagetype == "sdist")
{
install_specific = false;
return(true);
}
return(true);
}
private bool Install(PythonInstall install, PackageDownload download, Request request)
{
if (download.packagetype != "bdist_wheel")
{
if (!install.InstallPip(request))
{
return(false);
}
}
string tempdir, filename;
if (!DoDownload(download, out tempdir, out filename, request))
{
return(false);
}
try
{
if (download.packagetype == "bdist_wheel")
{
foreach (var package in PackagesFromFile(filename, request))
{
if (package.MatchesName(name) && package.version.raw_version_string == version.raw_version_string)
{
return(package.Install(install, request));
}
}
request.Error(ErrorCategory.MetadataError, name, "Downloaded package file doesn't contain the expected package.");
return(false);
}
else
{
return(install.InstallViaPip(filename, request));
}
}
finally
{
File.Delete(filename);
Directory.Delete(tempdir);
}
}