BlockStorage/siadrive
Archived
1
0
Fork 0
Code Activity

Upload manager changes

Browse Source
This commit is contained in:
Scott E. Graves
2017-02-22 19:25:04 -06:00
parent 6c144c060e
commit b7cfb942a2
9 changed files with 85 additions and 45 deletions
Download Patch File Download Diff File Expand all files Collapse all files

66
SiaDrive.Api/SiaCommon.cpp
View File

@@ -1,36 +1,44 @@
#include "stdafx.h"
#include "SiaCommon.h"
#include <ttmath/ttmath.h>
#include <Wincrypt.h>
using namespace Sia::Api;
NS_BEGIN(Sia)
NS_BEGIN(Api)
String AFX_EXT_API GenerateSha256(const String& str)
{
String ret;
HCRYPTPROV hCryptProv = 0;
HCRYPTHASH hHash = 0;
BOOL ok = CryptAcquireContext(&hCryptProv, NULL, NULL, PROV_RSA_AES, 0);
ok = ok && CryptCreateHash(hCryptProv, CALG_SHA_256, 0, 0, &hHash);
ok = ok && CryptHashData(hHash, reinterpret_cast<const BYTE*>(&str[0]), str.length() * sizeof(TCHAR), 0);
if (ok)
{
DWORD dwHashLen;
DWORD dwCount = sizeof(DWORD);
if (CryptGetHashParam(hHash, HP_HASHSIZE, reinterpret_cast<BYTE *>(&dwHashLen), &dwCount, 0))
{
std::vector<unsigned char> hash(dwHashLen);
if (CryptGetHashParam(hHash, HP_HASHVAL, reinterpret_cast<BYTE *>(&hash[0]), &dwHashLen, 0))
{
std::ostringstream ss;
ss << std::hex << std::uppercase << std::setfill('0');
for (int c : hash)
{
ss << std::setw(2) << c;
}
std::string s = ss.str();
ret = CA2W(s.c_str()).m_psz;
}
}
}
if (hHash) CryptDestroyHash(hHash);
if (hCryptProv) CryptReleaseContext(hCryptProv, 0);
/*
// avgHostMetric computes the average of the metric given by `metric` on the
// list of `hosts`.
const avgHostMetric = (hosts, metric) = >
hosts.reduce((sum, host) = > sum.add(host[metric]), new BigNumber(0))
.dividedBy(hosts.size)
// avgStorageCost returns the average storage cost from a list of hosts given a
// period (blocks) and redundancy.
const avgStorageCost = (hosts, period, redundancy) = >
avgHostMetric(hosts, 'storageprice')
.times(period)
.plus(avgHostMetric(hosts, 'uploadbandwidthprice'))
.times(redundancy)
.plus(avgHostMetric(hosts, 'downloadbandwidthprice'))
// Compute an estimated amount of storage from an amount of funds (Hastings)
// and a list of hosts.
export const estimatedStorage = (funds, hosts) = > {
const validHosts = List(hosts).take(28)
const avgStorage = avgStorageCost(validHosts, allowancePeriod, baseRedundancy)
let fee = SiaAPI.siacoinsToHastings(baseFee)
fee = fee.plus(avgHostMetric(validHosts, 'contractprice').times(ncontracts))
fee = fee.plus(funds.minus(fee).times(siafundRate))
return '~' + readableFilesize(Math.max(0, funds.minus(fee).dividedBy(avgStorage).toNumber().toPrecision(1)))
return ret;
}
*/
NS_END(2)