allow to diable UAC dialog

- remove CMake option `WIN_UAC`
- spawn UAC dialog via restarting xmr-miner with administrator right
- allow to disable UAC with `--noUAC`
- update documentation
- remove usage section with help message (output depends on OS)

1 files changed, 45 insertions, 0 deletions

diff --git a/xmrstak/cli/cli-miner.cpp b/xmrstak/cli/cli-miner.cpp
index e32733b..087d3b6 100644
--- a/xmrstak/cli/cli-miner.cpp
+++ b/xmrstak/cli/cli-miner.cpp
@@ -66,6 +66,9 @@ void help()
 	cout<<"  -v, --version         show version number"<<endl;
 	cout<<"  -V, --version-long    show long version number"<<endl;
 	cout<<"  -c, --config FILE     common miner configuration file"<<endl;
+#ifdef _WIN32
+	cout<<"  --noUAC               disable the UAC dialog"<<endl;
+#endif
 #if (!defined(CONF_NO_AEON)) && (!defined(CONF_NO_MONERO))
 	cout<<"  --currency NAME       currency to mine: monero or aeon"<<endl;
 #endif
@@ -269,6 +272,38 @@ void do_guided_config(bool userSetPasswd)
 	std::cout<<"Configuration stored in file '"<<params::inst().configFile<<"'"<<std::endl;
 }
 
+#ifdef _WIN32
+/** start the miner as administrator
+ *
+ * This function based on the stackoverflow post
+ *   - source: https://stackoverflow.com/a/4893508
+ *   - author: Cody Gray
+ *   - date: Feb 4 '11
+ */
+void UACDialog(std::string binaryName)
+{
+		SHELLEXECUTEINFO shExInfo = {0};
+		shExInfo.cbSize = sizeof(shExInfo);
+		shExInfo.fMask = SEE_MASK_NOCLOSEPROCESS;
+		shExInfo.hwnd = 0;
+		shExInfo.lpVerb = "runas";     
+		shExInfo.lpFile = binaryName.c_str();
+		// disable UAC dialog (else the miner will go into a infinite loop)
+		shExInfo.lpParameters = "--noUAC"; 
+		shExInfo.lpDirectory = 0;
+		shExInfo.nShow = SW_SHOW;
+		shExInfo.hInstApp = 0;
+
+		if(ShellExecuteEx(&shExInfo))
+		{
+			WaitForSingleObject(shExInfo.hProcess, INFINITE);
+			CloseHandle(shExInfo.hProcess);
+			// do not start the miner twice
+			std::exit(0);
+		}
+}
+#endif
+
 int main(int argc, char *argv[])
 {
 #ifndef CONF_NO_TLS
@@ -302,6 +337,7 @@ int main(int argc, char *argv[])
 	}
 
 	bool userSetPasswd = false;
+	bool uacDialog = true;
 	for(int i = 1; i < argc; ++i)
 	{
 		std::string opName(argv[i]);
@@ -424,6 +460,10 @@ int main(int argc, char *argv[])
 			}
 			params::inst().configFile = argv[i];
 		}
+		else if(opName.compare("--noUAC") == 0)
+		{
+			uacDialog = false;
+		}
 		else
 		{
 			printer::inst()->print_msg(L0, "Parameter unknown '%s'",argv[i]);
@@ -432,6 +472,11 @@ int main(int argc, char *argv[])
 		}
 	}
 
+#ifdef _WIN32
+	if(uacDialog)
+		UACDialog(argv[0]);
+#endif
+	
 	// check if we need a guided start
 	if(!configEditor::file_exist(params::inst().configFile))
 		do_guided_config(userSetPasswd);