457 lines
16 KiB
C++
457 lines
16 KiB
C++
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//
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// PrnUtil.cpp
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//
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#include "stdafx.h"
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#include "PrnUtil.h"
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#include "Sharing.h"
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#include "msprintx.h"
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#include "NetUtil.h"
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#include "TheApp.h"
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#include "cwnd.h"
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/////////////////////////////////////////////////////////////////////////////
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// static data
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static BOOL _bInit = FALSE;
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static HMODULE _hShell32 = NULL;
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static HMODULE _hMSPrint2 = NULL;
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static BOOL (STDAPICALLTYPE *_pfnSHInvokePrinterCommand)(HWND, UINT, LPCTSTR, LPCTSTR, BOOL) = NULL;
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static BOOL (STDAPICALLTYPE *_pfnSHHelpShortcuts)(HWND, HINSTANCE, LPSTR, int) = NULL;
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static BOOL (STDAPICALLTYPE *_pfnPrinterSetup32)(HWND, WORD, WORD, LPBYTE, LPWORD) = NULL;
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/////////////////////////////////////////////////////////////////////////////
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// Initialization of function thunks
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void InitPrinterFunctions()
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{
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if (!_bInit)
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{
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_bInit = TRUE;
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_hShell32 = LoadLibrary(TEXT("shell32.dll"));
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if (_hShell32 != NULL)
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{
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*(FARPROC*)&_pfnSHInvokePrinterCommand = GetProcAddress(_hShell32, "SHInvokePrinterCommandA");
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*(FARPROC*)&_pfnSHHelpShortcuts = GetProcAddress(_hShell32, "SHHelpShortcuts_RunDLL");
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}
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if (theApp.IsWindows9x())
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{
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_hMSPrint2 = LoadLibrary(TEXT("msprint2.dll"));
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if (_hMSPrint2 != NULL)
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{
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*(FARPROC*)&_pfnPrinterSetup32 = GetProcAddress(_hMSPrint2, MSPRINT2_PRINTERSETUP32);
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}
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}
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else
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{
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// NTs version of this function moved to a new dll and a different name
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_hMSPrint2 = LoadLibrary(TEXT("printui.dll"));
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if (_hMSPrint2 != NULL)
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{
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*(FARPROC*)&_pfnPrinterSetup32 = GetProcAddress(_hMSPrint2, "bPrinterSetup");
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}
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}
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}
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}
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/////////////////////////////////////////////////////////////////////////////
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// MyEnumPrinters
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//
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// Enumerates local or remote connected printers, allocates an array
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// of PRINTER_ENUM structs for the result, and returns the number of
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// printers found.
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//
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// pprgPrinters - gets filled with an array of PRINTER_ENUM structs
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// allocated via malloc().
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//
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// dwEnumFlags - one or more of:
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// MY_PRINTER_ENUM_REMOTE
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// MY_PRINTER_ENUM_LOCAL
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// MY_PRINTER_ENUM_LOCAL
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//
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int MyEnumPrinters(PRINTER_ENUM** pprgPrinters, DWORD dwEnumFlags)
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{
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PRINTER_ENUM* prgPrinters = NULL;
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int cMatchingPrinters = 0;
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ASSERT(sizeof(PRINTER_INFO_5A) == sizeof(PRINTER_INFO_5W)); // to handle thunking
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DWORD cb = 0;
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DWORD cAllPrinters = 0;
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EnumPrinters(PRINTER_ENUM_LOCAL, NULL, 5, NULL, 0, &cb, &cAllPrinters);
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if (cb > 0)
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{
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PRINTER_INFO_5* prgPrinterInfo5 = (PRINTER_INFO_5*)malloc(cb);
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if (prgPrinterInfo5)
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{
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if (EnumPrinters(PRINTER_ENUM_LOCAL, NULL, 5, (LPBYTE)prgPrinterInfo5, cb, &cb, &cAllPrinters))
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{
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ASSERT(cAllPrinters > 0);
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// How much space will the strings take?
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DWORD cbArray = cAllPrinters * sizeof(PRINTER_INFO_5);
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DWORD cbStrings = cb - cbArray;
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// Allocate out [OUT] buffer
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prgPrinters = (PRINTER_ENUM*)malloc(cAllPrinters*sizeof(PRINTER_ENUM) + cbStrings);
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if (prgPrinters)
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{
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// set up text portion of output buffer and thunking/copying function
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//
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LPTSTR pszPrinterText = (LPTSTR)(prgPrinters + cAllPrinters);
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UINT cchStrings = cbStrings/sizeof(WCHAR);
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// NT and 9X do defaultness differently...
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TCHAR szDefaultPrinter[MAX_PATH];
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szDefaultPrinter[0]=TEXT('\0');
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if (!theApp.IsWindows9x())
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{
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DWORD cch = ARRAYSIZE(szDefaultPrinter);
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GetDefaultPrinter(szDefaultPrinter, &cch);
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}
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// Fill in the output buffer
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for (DWORD i = 0; i < cAllPrinters; i++)
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{
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BOOL bKeepThisPrinter = FALSE;
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DWORD dwFlags = 0;
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if (theApp.IsWindows9x())
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{
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PRINTER_INFO_5* pPrinterInfo5 = (PRINTER_INFO_5*)&prgPrinterInfo5[i];
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if (pPrinterInfo5->pPortName[0] == L'\\' && pPrinterInfo5->pPortName[1] == L'\\')
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{
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// Found a remote, connected printer
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if (dwEnumFlags & MY_PRINTER_ENUM_REMOTE)
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{
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bKeepThisPrinter = TRUE;
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dwFlags |= PRF_REMOTE;
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}
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}
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else if (0 == StrCmpI(pPrinterInfo5->pPortName, L"FILE:"))
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{
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// Found a pseudo printer
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if (dwEnumFlags & MY_PRINTER_ENUM_VIRTUAL)
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{
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bKeepThisPrinter = TRUE;
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dwFlags |= PRF_VIRTUAL;
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}
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}
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else if (StrStr(pPrinterInfo5->pPortName, L"FAX"))
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{
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// Found a pseudo printer
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if (dwEnumFlags & MY_PRINTER_ENUM_VIRTUAL)
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{
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bKeepThisPrinter = TRUE;
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dwFlags |= PRF_VIRTUAL;
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}
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}
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else
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{
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// Found a local printer
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if (dwEnumFlags & MY_PRINTER_ENUM_LOCAL)
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{
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bKeepThisPrinter = TRUE;
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dwFlags |= PRF_LOCAL;
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}
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}
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}
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else // handle NT
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{
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PRINTER_INFO_5* pPrinterInfo5 = (PRINTER_INFO_5*)&prgPrinterInfo5[i];
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if (pPrinterInfo5->pPortName[0] == _T('\\') && pPrinterInfo5->pPortName[1] == _T('\\'))
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{
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// Found a remote, connected printer
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if (dwEnumFlags & MY_PRINTER_ENUM_REMOTE)
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{
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bKeepThisPrinter = TRUE;
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dwFlags |= PRF_REMOTE;
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}
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}
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else if (0 == StrCmpI(pPrinterInfo5->pPortName, _T("FILE:")))
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{
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// Found a pseudo printer
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if (dwEnumFlags & MY_PRINTER_ENUM_VIRTUAL)
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{
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bKeepThisPrinter = TRUE;
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dwFlags |= PRF_VIRTUAL;
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}
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}
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else if (StrStr(pPrinterInfo5->pPortName, _T("FAX")))
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{
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// Found a pseudo printer
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if (dwEnumFlags & MY_PRINTER_ENUM_VIRTUAL)
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{
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bKeepThisPrinter = TRUE;
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dwFlags |= PRF_VIRTUAL;
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}
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}
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else
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{
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// Found a local printer
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if (dwEnumFlags & MY_PRINTER_ENUM_LOCAL)
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{
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bKeepThisPrinter = TRUE;
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dwFlags |= PRF_LOCAL;
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}
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}
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}
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if (bKeepThisPrinter)
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{
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PRINTER_INFO_5* pPrinterInfo5 = (PRINTER_INFO_5*)&prgPrinterInfo5[i];
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PRINTER_ENUM* pPrinter = &prgPrinters[cMatchingPrinters++];
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int cch;
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StrCpyNW(pszPrinterText, pPrinterInfo5->pPrinterName, cchStrings);
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cch = lstrlenW(pszPrinterText) + 1;
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pPrinter->pszPrinterName = pszPrinterText;
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pszPrinterText += cch;
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cchStrings -= cch;
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StrCpyNW(pszPrinterText, pPrinterInfo5->pPortName, cchStrings);
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cch = lstrlenW(pszPrinterText) + 1;
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pPrinter->pszPortName = pszPrinterText;
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pszPrinterText += cch;
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cchStrings -= cch;
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// update some flags before we cache them away
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//
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if (!(dwFlags&PRF_REMOTE) && IsPrinterShared(pPrinter->pszPrinterName))
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{
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dwFlags |= PRF_SHARED;
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}
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if ((pPrinterInfo5->Attributes & PRINTER_ATTRIBUTE_DEFAULT)
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|| (0 == StrCmpI(szDefaultPrinter, pPrinterInfo5->pPrinterName)))
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{
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dwFlags |= PRF_DEFAULT;
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}
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pPrinter->dwFlags = dwFlags;
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}
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}
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// didn't find anything, throw away our output buffer
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if (cMatchingPrinters == 0 && prgPrinters != NULL)
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{
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free(prgPrinters);
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prgPrinters = NULL;
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}
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}
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}
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free(prgPrinterInfo5);
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}
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}
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*pprgPrinters = prgPrinters;
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return cMatchingPrinters;
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}
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int MyEnumLocalPrinters(PRINTER_ENUM** prgPrinters)
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{
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return MyEnumPrinters(prgPrinters, MY_PRINTER_ENUM_LOCAL);
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}
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int MyEnumRemotePrinters(PRINTER_ENUM** prgPrinters)
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{
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return MyEnumPrinters(prgPrinters, MY_PRINTER_ENUM_REMOTE);
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}
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/////////////////////////////////////////////////////////////////////////////
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// AddPrinterHookProc
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class CAddPrinterHook : public CWnd
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{
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public:
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CAddPrinterHook(LPCTSTR pszAppendWindowTitle, HWND hwndOwner);
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void Release() { CWnd::Release(); };
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void Done(BOOL bResult);
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protected:
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static LRESULT CALLBACK AddPrinterHookProcStatic(int nCode, WPARAM wParam, LPARAM lParam);
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~CAddPrinterHook();
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LRESULT WindowProc(UINT message, WPARAM wParam, LPARAM lParam);
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LRESULT AddPrinterHookProc(int nCode, WPARAM wParam, LPARAM lParam);
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HHOOK m_hAddPrinterHook;
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HWND m_hWndAddPrinterParent;
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LPTSTR m_pszAppendWindowTitle;
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};
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// global hooks have no state, must use global to get back to our data
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static CAddPrinterHook * g_pCAddPrinterHook = NULL;
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CAddPrinterHook::CAddPrinterHook(LPCTSTR pszAppendWindowTitle, HWND hwndOwner)
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{
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ASSERT(NULL == g_pCAddPrinterHook);
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g_pCAddPrinterHook = this;
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m_pszAppendWindowTitle = lstrdup(pszAppendWindowTitle);
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m_hWndAddPrinterParent = hwndOwner;
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// Set a hook so we can modify the title of the add printer wizard when it pops up
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m_hAddPrinterHook = SetWindowsHookEx(WH_CBT, AddPrinterHookProcStatic, NULL, GetCurrentThreadId());
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}
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CAddPrinterHook::~CAddPrinterHook()
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{
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ASSERT(this == g_pCAddPrinterHook);
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g_pCAddPrinterHook = NULL;
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if (m_pszAppendWindowTitle)
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free(m_pszAppendWindowTitle);
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CWnd::~CWnd();
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}
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void CAddPrinterHook::Done(BOOL bResult)
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{
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// TRUE==bResult if the window was launched.
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//
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// FALSE => no window to watch, so remove our hook as it'll never come up
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// TRUE => if the window is on the same thread, we've already seen it and unhooked
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// but if the window is on another thread, it may not come up it so don't unhook.
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// EXCEPT, we may never see it. So be safe and always unhook...
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//
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if (m_hAddPrinterHook != NULL)
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{
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if (bResult)
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{
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TraceMsg(TF_WARNING, "CAddPrinterHook::Done(TRUE) called but m_hAddPrinterHook still exists...");
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}
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UnhookWindowsHookEx(m_hAddPrinterHook);
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m_hAddPrinterHook = NULL;
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}
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}
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LRESULT CAddPrinterHook::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
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{
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LPTSTR pszTempText = NULL;
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switch (message)
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{
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case WM_SETTEXT:
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if (m_pszAppendWindowTitle)
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{
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pszTempText = new TCHAR [lstrlen(m_pszAppendWindowTitle) + lstrlen((LPCTSTR)lParam) + 1];
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if (pszTempText)
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{
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StrCpy(pszTempText, (LPCTSTR)lParam);
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StrCat(pszTempText, m_pszAppendWindowTitle);
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lParam = (LPARAM)pszTempText;
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}
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}
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break;
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}
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LRESULT lResult = Default(message, wParam, lParam);
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delete [] pszTempText;
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return lResult;
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}
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LRESULT CALLBACK CAddPrinterHook::AddPrinterHookProcStatic(int nCode, WPARAM wParam, LPARAM lParam)
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{
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CAddPrinterHook* pThis = g_pCAddPrinterHook; // global hook -- we have no associated state!
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if (pThis)
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return pThis->AddPrinterHookProc(nCode, wParam, lParam);
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else
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return 0;
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}
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LRESULT CAddPrinterHook::AddPrinterHookProc(int nCode, WPARAM wParam, LPARAM lParam)
|
||
|
|
{
|
||
|
|
LRESULT lResult = CallNextHookEx(m_hAddPrinterHook, nCode, wParam, lParam);
|
||
|
|
|
||
|
|
if (nCode == HCBT_CREATEWND)
|
||
|
|
{
|
||
|
|
HWND hwndNew = (HWND)wParam;
|
||
|
|
CBT_CREATEWND* pCreateWnd = (CBT_CREATEWND*)lParam;
|
||
|
|
if (pCreateWnd->lpcs->hwndParent == m_hWndAddPrinterParent &&
|
||
|
|
(pCreateWnd->lpcs->style & WS_POPUP) != 0)
|
||
|
|
{
|
||
|
|
UnhookWindowsHookEx(m_hAddPrinterHook);
|
||
|
|
m_hAddPrinterHook = NULL;
|
||
|
|
|
||
|
|
Attach(hwndNew);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return lResult;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/////////////////////////////////////////////////////////////////////////////
|
||
|
|
// ConnectToNetworkPrinter
|
||
|
|
|
||
|
|
BOOL ConnectToNetworkPrinter(HWND hWndOwner, LPCTSTR pszPrinterShare)
|
||
|
|
{
|
||
|
|
InitPrinterFunctions();
|
||
|
|
|
||
|
|
BOOL bResult;
|
||
|
|
LPTSTR pszAppendWindowTitle = NULL;
|
||
|
|
|
||
|
|
LPTSTR pszPrettyName = FormatShareNameAlloc(pszPrinterShare);
|
||
|
|
if (pszPrettyName)
|
||
|
|
{
|
||
|
|
pszAppendWindowTitle = theApp.FormatStringAlloc(IDS_ADDPRINTER_APPEND, pszPrettyName);
|
||
|
|
free(pszPrettyName);
|
||
|
|
}
|
||
|
|
CAddPrinterHook * paph = new CAddPrinterHook(pszAppendWindowTitle, hWndOwner);
|
||
|
|
if (pszAppendWindowTitle)
|
||
|
|
free(pszAppendWindowTitle);
|
||
|
|
|
||
|
|
if (_pfnSHInvokePrinterCommand != NULL)
|
||
|
|
{
|
||
|
|
// First: Try to call SHInvokePrinterCommand, if available.
|
||
|
|
// This only works on systems with the IE4 desktop enhancements installed.
|
||
|
|
|
||
|
|
bResult = (*_pfnSHInvokePrinterCommand)(hWndOwner, PRINTACTION_NETINSTALL, pszPrinterShare, NULL, TRUE);
|
||
|
|
}
|
||
|
|
else if (_pfnPrinterSetup32 != NULL)
|
||
|
|
{
|
||
|
|
// Next: Try to call PrinterSetup32, if available.
|
||
|
|
|
||
|
|
WORD cch = lstrlen(pszPrinterShare) + 1;
|
||
|
|
BYTE* pPrinterShare = (BYTE*)malloc(cch);
|
||
|
|
StrCpy((LPTSTR)pPrinterShare, pszPrinterShare);
|
||
|
|
bResult = (*_pfnPrinterSetup32)(hWndOwner, MSP_NETPRINTER, cch, pPrinterShare, &cch);
|
||
|
|
free(pPrinterShare);
|
||
|
|
}
|
||
|
|
else if (_pfnSHHelpShortcuts != NULL)
|
||
|
|
{
|
||
|
|
// Neither of the above APIs was available.
|
||
|
|
// Instead, just launch the Add Printer Wizard.
|
||
|
|
|
||
|
|
bResult = (*_pfnSHHelpShortcuts)(hWndOwner, _hShell32, "AddPrinter", SW_SHOW);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// Yikes, we can't even launch the Add Printer Wizard!
|
||
|
|
bResult = FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (paph)
|
||
|
|
{
|
||
|
|
paph->Done(bResult);
|
||
|
|
paph->Release();
|
||
|
|
}
|
||
|
|
|
||
|
|
return bResult;
|
||
|
|
}
|
||
|
|
|