Changed: New functions launchProgramArray to pass an array of strings as arguments (easier to escape)

--HG--
branch : develop

code/nel/include/nel/misc/common.h

@@ -366,6 +366,9 @@ std::string formatThousands(const std::string& s);
 /// The program will be launched in the current directory
 bool launchProgram (const std::string &programName, const std::string &arguments, bool log = true);
 
+/// Same but with an array of strings for arguments
+bool launchProgramArray (const std::string &programName, const std::vector<std::string> &arguments, bool log = true);
+
 /// This function executes a program and wait for result (used for example for crash report).
 /// The program will be launched in the current directory
 sint launchProgramAndWaitForResult (const std::string &programName, const std::string &arguments, bool log = true);

code/nel/src/misc/common.cpp

@@ -831,6 +831,7 @@ bool launchProgram(const std::string &programName, const std::string &arguments,
 #endif
 
 	static bool firstLaunchProgram = true;
+
 	if (firstLaunchProgram)
 	{
 		// The aim of this is to avoid defunct process.
@@ -896,6 +897,110 @@ bool launchProgram(const std::string &programName, const std::string &arguments,
 	return false;
 }
 
+bool launchProgramArray (const std::string &programName, const std::vector<std::string> &arguments, bool log)
+{
+#ifdef NL_OS_WINDOWS
+	PROCESS_INFORMATION pi;
+
+	std::string argumentsJoined = joinArguments(arguments);
+
+	if (!createProcess(programName, argumentsJoined, log, pi)) return false;
+
+	//nldebug("LAUNCH: Successful launch '%s' with arg '%s'", programName.c_str(), arguments.c_str());
+	CloseHandle( pi.hProcess );
+	CloseHandle( pi.hThread );
+	return true;
+#else
+
+#ifdef NL_OS_MAC
+	// special OS X case with bundles
+	if (toLower(programName).find(".app") != std::string::npos)
+	{
+		// we need to open bundles with "open" command
+		std::string command = NLMISC::toString("open \"%s\"", programName.c_str());
+
+		// append arguments if any
+		if (!arguments.empty())
+		{
+			command += NLMISC::toString(" --args %s", joinArguments(arguments).c_str());
+		}
+
+		int res = system(command.c_str());
+
+		if (!res) return true;
+
+		if (log)
+		{
+			nlwarning ("LAUNCH: Failed launched '%s' with arg '%s' return code %d", programName.c_str(), arguments.c_str(), res);
+		}
+
+		return false;
+	}
+#endif
+
+	static bool firstLaunchProgram = true;
+
+	if (firstLaunchProgram)
+	{
+		// The aim of this is to avoid defunct process.
+		//
+		// From "man signal":
+		//------
+		// According to POSIX (3.3.1.3) it is unspecified what happens when SIGCHLD is set to SIG_IGN.   Here
+		// the  BSD  and  SYSV  behaviours  differ,  causing BSD software that sets the action for SIGCHLD to
+		// SIG_IGN to fail on Linux.
+		//------
+		//
+		// But it works fine on my GNU/Linux so I do this because it's easier :) and I don't know exactly
+		// what to do to be portable.
+		signal(SIGCHLD, SIG_IGN);
+
+		firstLaunchProgram = false;
+	}
+
+	// Store the size of each arg
+	vector<char *> argv(arguments.size()+2);
+	uint i = 0;
+	argv[i] = (char *)programName.c_str();
+	for (; i < arguments.size(); i++)
+	{
+		argv[i+1] = (char *) arguments[i].c_str();
+	}
+	argv[i+1] = NULL;
+	
+	int status = vfork ();
+	/////////////////////////////////////////////////////////
+	/// WARNING : NO MORE INSTRUCTION AFTER VFORK !
+	/// READ VFORK manual
+	/////////////////////////////////////////////////////////
+	if (status == -1)
+	{
+		char *err = strerror (errno);
+		if (log)
+			nlwarning("LAUNCH: Failed launched '%s' with arg '%s' err %d: '%s'", programName.c_str(), arguments.c_str(), errno, err);
+	}
+	else if (status == 0)
+	{
+		// Exec (the only allowed instruction after vfork)
+		status = execvp(programName.c_str(), &argv.front());
+
+		if (status == -1)
+		{
+			perror("Failed launched");
+			_exit(EXIT_FAILURE);
+		}
+	}
+	else
+	{
+		//nldebug("LAUNCH: Successful launch '%s' with arg '%s'", programName.c_str(), arguments.c_str());
+
+		return true;
+	}
+#endif
+
+	return false;
+}
+
 sint launchProgramAndWaitForResult(const std::string &programName, const std::string &arguments, bool log)
 {
 #ifdef NL_OS_WINDOWS

code/ryzom/client/src/login_patch.cpp

@@ -1022,32 +1022,37 @@ void CPatchManager::executeBatchFile()
 	// make script executable
 	CFile::setRWAccess(batchFilename);
 
-	std::string arguments;
+	std::vector<std::string> arguments;
 
 	// 3 first parameters are Ryzom client full path, patch directory full path and client root directory full path
 #ifdef NL_OS_WINDOWS
-	arguments += "\"" + CPath::standardizeDosPath(RyzomFilename) + "\" \"" + CPath::standardizeDosPath(ClientPatchPath) + "\" \"" + CPath::standardizeDosPath(ClientRootPath) + "\"";
+	arguments.push_back(CPath::standardizeDosPath(RyzomFilename));
+	arguments.push_back(CPath::standardizeDosPath(ClientPatchPath));
+	arguments.push_back(CPath::standardizeDosPath(ClientRootPath));
 #else
-	arguments += "\"" + RyzomFilename + "\" \"" + ClientPatchPath + "\" " + ClientRootPath + "\"";
+	arguments.push_back(RyzomFilename);
+	arguments.push_back(ClientPatchPath);
+	arguments.push_back(ClientRootPath);
 #endif
 
-	// append login, password and shard 
+	// append login, password and shard
 	if (!LoginLogin.empty())
 	{
-		arguments += " " + LoginLogin;
+		arguments.push_back(LoginLogin);
 	
 		if (!LoginPassword.empty())
 		{
-			arguments += " " + LoginPassword;
+			arguments.push_back(LoginPassword);
 
 			if (!r2Mode)
 			{
-				arguments += " " + toString(LoginShardId);
+				arguments.push_back(toString(LoginShardId));
 			}
 		}
 	}
 
-	if (!launchProgram(batchFilename, arguments, false))
+	// launchProgram with array of strings as argument will escape arguments with spaces
+	if (!launchProgramArray(batchFilename, arguments, false))
 	{
 		// error occurs during the launch
 		string str = toString("Can't execute '%s': code=%d %s (error code 30)", batchFilename.c_str(), errno, strerror(errno));