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Merge pull request #6694 from spycrab/updater_uac 

Updater: Implement UAC support
This commit is contained in:
Pierre Bourdon 2018-04-25 23:01:23 +02:00 committed by GitHub
parent c51c044142 6e4c5d780d
commit e0f677c745
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 31 additions and 4 deletions
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35
Source/Core/Updater/Main.cpp
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@ -3,6 +3,7 @@
// Refer to the license.txt file included.
#include <windows.h>
#include <ShlObj.h>
#include <OptionParser.h>
#include <algorithm>
@ -674,11 +675,18 @@ int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PWSTR pCmdLine
return 1;
Options opts = std::move(*maybe_opts);
bool need_admin = false;
if (opts.log_file)
{
log_fp = _wfopen(UTF8ToUTF16(*opts.log_file).c_str(), L"w");
if (!log_fp)
{
log_fp = stderr;
// Failing to create the logfile for writing is a good indicator that we need administrator
// priviliges
need_admin = true;
}
else
atexit(FlushLog);
}
@ -702,8 +710,25 @@ int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PWSTR pCmdLine
fprintf(log_fp, "Completed! Proceeding with update.\n");
}
std::thread thread(UI::MessageLoop);
thread.detach();
if (need_admin)
{
if (IsUserAnAdmin())
{
FatalError("Failed to write to directory despite administrator priviliges.");
return 1;
}
wchar_t path[MAX_PATH];
if (GetModuleFileName(hInstance, path, sizeof(path)) == 0)
{
FatalError("Failed to get updater filename.");
return 1;
}
// Relaunch the updater as administrator
ShellExecuteW(nullptr, L"runas", path, pCmdLine, NULL, SW_SHOW);
return 0;
}
UI::SetDescription("Fetching and parsing manifests...");
@ -754,8 +779,10 @@ int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PWSTR pCmdLine
if (opts.binary_to_restart)
{
ShellExecuteW(nullptr, L"open", UTF8ToUTF16(*opts.binary_to_restart).c_str(), L"", nullptr,
SW_SHOW);
// Hack: Launching the updater over the explorer ensures that admin priviliges are dropped. Why?
// Ask Microsoft.
ShellExecuteW(nullptr, nullptr, L"explorer.exe", UTF8ToUTF16(*opts.binary_to_restart).c_str(),
nullptr, SW_SHOW);
}
UI::Stop();