Andre, Take a look at service-win32/openvpnserv.c -- this code shows how to do a CreateProcess with redirected standard handles.
James Andre Morisse <a...@application-factory.de> said: > Hello together > > at the moment I just trying to build up a GUI Interface for Windows to OVPN > for easier use. The target is to build a GUI that handle a connect-up to a > OVPN Server without showing the user all the status information and really > confusing status outputs for "normal" user. > Short said: Only a button connect, a field to enter a passphrase for the > rsa key and a status indicator if connect or not. > > I already programmed the GUI interface based in a system that loads the > OVPN and starts it with the appropiate config file and redirecting the > STDInput and STDOutput Handles to named pipes instead of a console. > With this, the GUI ist able to read from and write to the console > like a user, all to do is to interpret the status messages and send, > for example, the passphrase if requested as keyboard-input. > > At least, I should announce that, to get this work, I had to make minor > changes to the io.c file and commented out the check if it is a running > windows nt service, because redirecting the inputs&outputs is a thing > a windows nt service would do, too. With this changes, I recompiled the > ovpn (btw. version 1.5.0). > > Now the following problem: > When starting the rebuild version from console, everything works fine > like it should, asking for passphrase, connecting and so on. The VPN > connection is full usable (this was tested). > > When connecting with the changed STDInput und STDOutput Params, it > runs to, ask for the passphrase, which is send by the GUI programm and > accepted by OVPN, runs further and loads everything like it is in console > und stops at the message where it say "Local IP: ip:undefined" and > "Server IP: ip:port". (This can be seen at the screenshots, too). > > My question is: someone a idea why ovpn stops working when running with > the redirected Input und Outputs (to a pipe for another programm instead > to the pipe of the console) at the point where it should connect ? > > Another idea is to start it in console, but pass the passphrase for the key > when calling up by a command-line parameter as entered by the user in a input > field in the gui interface and checking of a ovpn connection is established > if there is a Task of the openvpn.exe File running in the system (really bad, > i know - but this would work ;-) > Anyone already done a modification for passing the passphrase by commandline > instead of entering it at the console window and could give me some > information about what to modify ? > > At least, I have two screenshots of the modified ovpn running at console: > http://www.a-fa.de/am/ovpn/console_screenshot.gif > > and running at the gui with the redirected pipes: > http://www.a-fa.de/am/ovpn/gui_screenshot.gif > > both times with the same config and the same key. > > thanks for any help or information! > > with greetings > Andre > > > The following is just informational: > > The redirecting of the named pipes it done by the STARTUPINFO Structure of > Windows used by the CreateProcess API Command: > > typedef struct _STARTUPINFO { // si > DWORD cb; > LPTSTR lpReserved; > LPTSTR lpDesktop; > LPTSTR lpTitle; > DWORD dwX; > DWORD dwY; > DWORD dwXSize; > DWORD dwYSize; > DWORD dwXCountChars; > DWORD dwYCountChars; > DWORD dwFillAttribute; > DWORD dwFlags; > WORD wShowWindow; > WORD cbReserved2; > LPBYTE lpReserved2; > HANDLE hStdInput; <--- there you can give pipes at windows > HANDLE hStdOutput; <--- there you give the pipes at windows > HANDLE hStdError; <--- there you give the pipes at windows > > } STARTUPINFO, *LPSTARTUPINFO; > > and with this it is called, where you can give an STARTUPINFO to Windows > > BOOL CreateProcess( > > LPCTSTR lpApplicationName, // pointer to name of executable module > LPTSTR lpCommandLine, // pointer to command line string > LPSECURITY_ATTRIBUTES lpProcessAttributes, > // pointer to process security attributes > LPSECURITY_ATTRIBUTES lpThreadAttributes, > // pointer to thread security attributes > BOOL bInheritHandles, // handle inheritance flag > DWORD dwCreationFlags, // creation flags > LPVOID lpEnvironment, // pointer to new environment block > LPCTSTR lpCurrentDirectory, // pointer to current directory name > LPSTARTUPINFO lpStartupInfo, // pointer to STARTUPINFO > LPPROCESS_INFORMATION lpProcessInformation > // pointer to PROCESS_INFORMATION > ); > > > > > ------------------------------------------------------- > This SF.Net email is sponsored by: IBM Linux Tutorials > Free Linux tutorial presented by Daniel Robbins, President and CEO of > GenToo technologies. Learn everything from fundamentals to system > administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click > _______________________________________________ > Openvpn-devel mailing list > Openvpn-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/openvpn-devel > --
