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[WINSPOOL] Add Implementation of EnumPrintersA (#2273)
This commit is contained in:
Doug Lyons
GitHub
parent
fcc4347898
commit
e8b177825b
1 changed files with 445 additions and 1 deletions
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@ -8,6 +8,7 @@
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#include "precomp.h"
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#include "precomp.h"
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#include <marshalling/printers.h>
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#include <marshalling/printers.h>
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#include <marshalling/printerdrivers.h>
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#include <marshalling/printerdrivers.h>
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#include <strsafe.h>
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// Local Constants
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// Local Constants
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@ -386,8 +387,451 @@ Cleanup:
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BOOL WINAPI
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BOOL WINAPI
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EnumPrintersA(DWORD Flags, PSTR Name, DWORD Level, PBYTE pPrinterEnum, DWORD cbBuf, PDWORD pcbNeeded, PDWORD pcReturned)
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EnumPrintersA(DWORD Flags, PSTR Name, DWORD Level, PBYTE pPrinterEnum, DWORD cbBuf, PDWORD pcbNeeded, PDWORD pcReturned)
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{
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{
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BOOL bReturnValue = FALSE;
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DWORD cch;
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PWSTR pwszName = NULL;
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PSTR pszPrinterName = NULL;
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PSTR pszServerName = NULL;
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PSTR pszDescription = NULL;
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PSTR pszName = NULL;
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PSTR pszComment = NULL;
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PSTR pszShareName = NULL;
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PSTR pszPortName = NULL;
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PSTR pszDriverName = NULL;
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PSTR pszLocation = NULL;
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PSTR pszSepFile = NULL;
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PSTR pszPrintProcessor = NULL;
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PSTR pszDatatype = NULL;
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PSTR pszParameters = NULL;
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DWORD i;
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PPRINTER_INFO_1W ppi1w = NULL;
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PPRINTER_INFO_1A ppi1a = NULL;
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PPRINTER_INFO_2W ppi2w = NULL;
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PPRINTER_INFO_2A ppi2a = NULL;
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PPRINTER_INFO_4W ppi4w = NULL;
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PPRINTER_INFO_4A ppi4a = NULL;
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PPRINTER_INFO_5W ppi5w = NULL;
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PPRINTER_INFO_5A ppi5a = NULL;
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TRACE("EnumPrintersA(%lu, %s, %lu, %p, %lu, %p, %p)\n", Flags, Name, Level, pPrinterEnum, cbBuf, pcbNeeded, pcReturned);
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TRACE("EnumPrintersA(%lu, %s, %lu, %p, %lu, %p, %p)\n", Flags, Name, Level, pPrinterEnum, cbBuf, pcbNeeded, pcReturned);
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return FALSE;
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// Check for invalid levels here for early error return. MSDN says that only 1, 2, 4, and 5 are allowable.
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if (Level != 1 && Level != 2 && Level != 4 && Level != 5)
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{
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SetLastError(ERROR_INVALID_LEVEL);
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ERR("Invalid Level!\n");
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goto Cleanup;
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}
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if (Name)
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{
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// Convert pName to a Unicode string pwszName.
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cch = strlen(Name);
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pwszName = HeapAlloc(hProcessHeap, 0, (cch + 1) * sizeof(WCHAR));
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if (!pwszName)
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{
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SetLastError(ERROR_NOT_ENOUGH_MEMORY);
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ERR("HeapAlloc failed!\n");
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goto Cleanup;
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}
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MultiByteToWideChar(CP_ACP, 0, Name, -1, pwszName, cch + 1);
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}
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/* Ref: https://stackoverflow.com/questions/41147180/why-enumprintersa-and-enumprintersw-request-the-same-amount-of-memory */
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bReturnValue = EnumPrintersW(Flags, pwszName, Level, pPrinterEnum, cbBuf, pcbNeeded, pcReturned);
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HeapFree(hProcessHeap, 0, pwszName);
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TRACE("*pcReturned is '%d' and bReturnValue is '%d' and GetLastError is '%ld'.\n", *pcReturned, bReturnValue, GetLastError());
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/* We are mapping multiple different pointers to the same pPrinterEnum pointer here so that */
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/* we can do in-place conversion. We read the Unicode response from the EnumPrintersW and */
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/* then we write back the ANSI conversion into the same buffer for our EnumPrintersA output */
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/* mapping to pPrinterEnum for Unicode (w) characters for Levels 1, 2, 4, and 5 */
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ppi1w = (PPRINTER_INFO_1W)pPrinterEnum;
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ppi2w = (PPRINTER_INFO_2W)pPrinterEnum;
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ppi4w = (PPRINTER_INFO_4W)pPrinterEnum;
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ppi5w = (PPRINTER_INFO_5W)pPrinterEnum;
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/* mapping to pPrinterEnum for ANSI (a) characters for Levels 1, 2, 4, and 5 */
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ppi1a = (PPRINTER_INFO_1A)pPrinterEnum;
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ppi2a = (PPRINTER_INFO_2A)pPrinterEnum;
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ppi4a = (PPRINTER_INFO_4A)pPrinterEnum;
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ppi5a = (PPRINTER_INFO_5A)pPrinterEnum;
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for (i = 0; i < *pcReturned; i++)
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{
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switch (Level)
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{
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case 1:
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{
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if (ppi1w[i].pDescription)
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{
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// Convert Unicode pDescription to a ANSI string pszDescription.
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cch = wcslen(ppi1w[i].pDescription);
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pszDescription = HeapAlloc(hProcessHeap, 0, (cch + 1) * sizeof(CHAR));
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if (!pszDescription)
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{
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SetLastError(ERROR_NOT_ENOUGH_MEMORY);
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ERR("HeapAlloc failed!\n");
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goto Cleanup;
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}
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WideCharToMultiByte(CP_ACP, 0, ppi1w[i].pDescription, -1, pszDescription, cch + 1, NULL, NULL);
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StringCchCopyA(ppi1a[i].pDescription, cch + 1, pszDescription);
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HeapFree(hProcessHeap, 0, pszDescription);
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}
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if (ppi1w[i].pName)
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{
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// Convert Unicode pName to a ANSI string pszName.
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cch = wcslen(ppi1w[i].pName);
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pszName = HeapAlloc(hProcessHeap, 0, (cch + 1) * sizeof(CHAR));
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if (!pszName)
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{
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SetLastError(ERROR_NOT_ENOUGH_MEMORY);
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ERR("HeapAlloc failed!\n");
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goto Cleanup;
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}
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WideCharToMultiByte(CP_ACP, 0, ppi1w[i].pName, -1, pszName, cch + 1, NULL, NULL);
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StringCchCopyA(ppi1a[i].pName, cch + 1, pszName);
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HeapFree(hProcessHeap, 0, pszName);
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}
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if (ppi1w[i].pComment)
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{
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// Convert Unicode pComment to a ANSI string pszComment.
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cch = wcslen(ppi1w[i].pComment);
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pszComment = HeapAlloc(hProcessHeap, 0, (cch + 1) * sizeof(CHAR));
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if (!pszComment)
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{
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SetLastError(ERROR_NOT_ENOUGH_MEMORY);
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ERR("HeapAlloc failed!\n");
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goto Cleanup;
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}
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WideCharToMultiByte(CP_ACP, 0, ppi1w[i].pComment, -1, pszComment, cch + 1, NULL, NULL);
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StringCchCopyA(ppi1a[i].pComment, cch + 1, pszComment);
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HeapFree(hProcessHeap, 0, pszComment);
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}
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break;
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}
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case 2:
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{
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if (ppi2w[i].pServerName)
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{
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// Convert Unicode pServerName to a ANSI string pszServerName.
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cch = wcslen(ppi2w[i].pServerName);
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pszServerName = HeapAlloc(hProcessHeap, 0, (cch + 1) * sizeof(CHAR));
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if (!pszServerName)
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{
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SetLastError(ERROR_NOT_ENOUGH_MEMORY);
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ERR("HeapAlloc failed!\n");
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goto Cleanup;
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}
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WideCharToMultiByte(CP_ACP, 0, ppi2w[i].pServerName, -1, pszServerName, cch + 1, NULL, NULL);
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StringCchCopyA(ppi2a[i].pServerName, cch + 1, pszServerName);
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HeapFree(hProcessHeap, 0, pszServerName);
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}
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if (ppi2w[i].pPrinterName)
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{
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// Convert Unicode pPrinterName to a ANSI string pszPrinterName.
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cch = wcslen(ppi2w[i].pPrinterName);
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pszPrinterName = HeapAlloc(hProcessHeap, 0, (cch + 1) * sizeof(CHAR));
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if (!pszPrinterName)
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{
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SetLastError(ERROR_NOT_ENOUGH_MEMORY);
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ERR("HeapAlloc failed!\n");
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goto Cleanup;
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}
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WideCharToMultiByte(CP_ACP, 0, ppi2w[i].pPrinterName, -1, pszPrinterName, cch + 1, NULL, NULL);
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StringCchCopyA(ppi2a[i].pPrinterName, cch + 1, pszPrinterName);
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HeapFree(hProcessHeap, 0, pszPrinterName);
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}
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if (ppi2w[i].pShareName)
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{
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// Convert Unicode pShareName to a ANSI string pszShareName.
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cch = wcslen(ppi2w[i].pShareName);
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pszShareName = HeapAlloc(hProcessHeap, 0, (cch + 1) * sizeof(CHAR));
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if (!pszShareName)
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{
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SetLastError(ERROR_NOT_ENOUGH_MEMORY);
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ERR("HeapAlloc failed!\n");
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goto Cleanup;
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}
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WideCharToMultiByte(CP_ACP, 0, ppi2w[i].pShareName, -1, pszShareName, cch + 1, NULL, NULL);
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StringCchCopyA(ppi2a[i].pShareName, cch + 1, pszShareName);
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HeapFree(hProcessHeap, 0, pszShareName);
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}
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if (ppi2w[i].pPortName)
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{
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// Convert Unicode pPortName to a ANSI string pszPortName.
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cch = wcslen(ppi2w[i].pPortName);
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pszPortName = HeapAlloc(hProcessHeap, 0, (cch + 1) * sizeof(CHAR));
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if (!pszPortName)
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{
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SetLastError(ERROR_NOT_ENOUGH_MEMORY);
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ERR("HeapAlloc failed!\n");
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goto Cleanup;
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}
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WideCharToMultiByte(CP_ACP, 0, ppi2w[i].pPortName, -1, pszPortName, cch + 1, NULL, NULL);
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StringCchCopyA(ppi2a[i].pPortName, cch + 1, pszPortName);
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HeapFree(hProcessHeap, 0, pszPortName);
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}
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if (ppi2w[i].pDriverName)
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{
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// Convert Unicode pDriverName to a ANSI string pszDriverName.
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cch = wcslen(ppi2w[i].pDriverName);
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pszDriverName = HeapAlloc(hProcessHeap, 0, (cch + 1) * sizeof(CHAR));
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if (!pszDriverName)
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{
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SetLastError(ERROR_NOT_ENOUGH_MEMORY);
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ERR("HeapAlloc failed!\n");
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goto Cleanup;
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}
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WideCharToMultiByte(CP_ACP, 0, ppi2w[i].pDriverName, -1, pszDriverName, cch + 1, NULL, NULL);
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StringCchCopyA(ppi2a[i].pDriverName, cch + 1, pszDriverName);
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HeapFree(hProcessHeap, 0, pszDriverName);
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}
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if (ppi2w[i].pComment)
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{
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// Convert Unicode pComment to a ANSI string pszComment.
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cch = wcslen(ppi2w[i].pComment);
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pszComment = HeapAlloc(hProcessHeap, 0, (cch + 1) * sizeof(CHAR));
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if (!pszComment)
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{
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SetLastError(ERROR_NOT_ENOUGH_MEMORY);
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ERR("HeapAlloc failed!\n");
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goto Cleanup;
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}
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WideCharToMultiByte(CP_ACP, 0, ppi2w[i].pComment, -1, pszComment, cch + 1, NULL, NULL);
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StringCchCopyA(ppi2a[i].pComment, cch + 1, pszComment);
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HeapFree(hProcessHeap, 0, pszComment);
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}
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if (ppi2w[i].pLocation)
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{
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// Convert Unicode pLocation to a ANSI string pszLocation.
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cch = wcslen(ppi2w[i].pLocation);
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pszLocation = HeapAlloc(hProcessHeap, 0, (cch + 1) * sizeof(CHAR));
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if (!pszLocation)
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{
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SetLastError(ERROR_NOT_ENOUGH_MEMORY);
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ERR("HeapAlloc failed!\n");
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goto Cleanup;
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}
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WideCharToMultiByte(CP_ACP, 0, ppi2w[i].pLocation, -1, pszLocation, cch + 1, NULL, NULL);
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StringCchCopyA(ppi2a[i].pLocation, cch + 1, pszLocation);
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HeapFree(hProcessHeap, 0, pszLocation);
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}
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if (ppi2w[i].pSepFile)
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{
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// Convert Unicode pSepFile to a ANSI string pszSepFile.
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cch = wcslen(ppi2w[i].pSepFile);
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pszSepFile = HeapAlloc(hProcessHeap, 0, (cch + 1) * sizeof(CHAR));
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if (!pszSepFile)
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{
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SetLastError(ERROR_NOT_ENOUGH_MEMORY);
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ERR("HeapAlloc failed!\n");
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goto Cleanup;
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}
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WideCharToMultiByte(CP_ACP, 0, ppi2w[i].pSepFile, -1, pszSepFile, cch + 1, NULL, NULL);
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StringCchCopyA(ppi2a[i].pSepFile, cch + 1, pszSepFile);
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HeapFree(hProcessHeap, 0, pszSepFile);
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}
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if (ppi2w[i].pPrintProcessor)
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{
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// Convert Unicode pPrintProcessor to a ANSI string pszPrintProcessor.
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cch = wcslen(ppi2w[i].pPrintProcessor);
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pszPrintProcessor = HeapAlloc(hProcessHeap, 0, (cch + 1) * sizeof(CHAR));
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if (!pszPrintProcessor)
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{
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SetLastError(ERROR_NOT_ENOUGH_MEMORY);
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ERR("HeapAlloc failed!\n");
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goto Cleanup;
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}
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WideCharToMultiByte(CP_ACP, 0, ppi2w[i].pPrintProcessor, -1, pszPrintProcessor, cch + 1, NULL, NULL);
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StringCchCopyA(ppi2a[i].pPrintProcessor, cch + 1, pszPrintProcessor);
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HeapFree(hProcessHeap, 0, pszPrintProcessor);
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}
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if (ppi2w[i].pDatatype)
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{
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// Convert Unicode pDatatype to a ANSI string pszDatatype.
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cch = wcslen(ppi2w[i].pDatatype);
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pszDatatype = HeapAlloc(hProcessHeap, 0, (cch + 1) * sizeof(CHAR));
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if (!pszDatatype)
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{
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SetLastError(ERROR_NOT_ENOUGH_MEMORY);
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ERR("HeapAlloc failed!\n");
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goto Cleanup;
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}
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WideCharToMultiByte(CP_ACP, 0, ppi2w[i].pDatatype, -1, pszDatatype, cch + 1, NULL, NULL);
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StringCchCopyA(ppi2a[i].pDatatype, cch + 1, pszDatatype);
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HeapFree(hProcessHeap, 0, pszDatatype);
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}
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|
||||||
|
if (ppi2w[i].pParameters)
|
||||||
|
{
|
||||||
|
// Convert Unicode pParameters to a ANSI string pszParameters.
|
||||||
|
cch = wcslen(ppi2w[i].pParameters);
|
||||||
|
|
||||||
|
pszParameters = HeapAlloc(hProcessHeap, 0, (cch + 1) * sizeof(CHAR));
|
||||||
|
if (!pszParameters)
|
||||||
|
{
|
||||||
|
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
|
||||||
|
ERR("HeapAlloc failed!\n");
|
||||||
|
goto Cleanup;
|
||||||
|
}
|
||||||
|
|
||||||
|
WideCharToMultiByte(CP_ACP, 0, ppi2w[i].pParameters, -1, pszParameters, cch + 1, NULL, NULL);
|
||||||
|
StringCchCopyA(ppi2a[i].pParameters, cch + 1, pszParameters);
|
||||||
|
|
||||||
|
HeapFree(hProcessHeap, 0, pszParameters);
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
case 4:
|
||||||
|
{
|
||||||
|
if (ppi4w[i].pPrinterName)
|
||||||
|
{
|
||||||
|
// Convert Unicode pPrinterName to a ANSI string pszPrinterName.
|
||||||
|
cch = wcslen(ppi4w[i].pPrinterName);
|
||||||
|
|
||||||
|
pszPrinterName = HeapAlloc(hProcessHeap, 0, (cch + 1) * sizeof(CHAR));
|
||||||
|
if (!pszPrinterName)
|
||||||
|
{
|
||||||
|
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
|
||||||
|
ERR("HeapAlloc failed!\n");
|
||||||
|
goto Cleanup;
|
||||||
|
}
|
||||||
|
|
||||||
|
WideCharToMultiByte(CP_ACP, 0, ppi4w[i].pPrinterName, -1, pszPrinterName, cch + 1, NULL, NULL);
|
||||||
|
StringCchCopyA(ppi4a[i].pPrinterName, cch + 1, pszPrinterName);
|
||||||
|
|
||||||
|
HeapFree(hProcessHeap, 0, pszPrinterName);
|
||||||
|
}
|
||||||
|
|
||||||
|
if (ppi4w[i].pServerName)
|
||||||
|
{
|
||||||
|
// Convert Unicode pServerName to a ANSI string pszServerName.
|
||||||
|
cch = wcslen(ppi4w[i].pServerName);
|
||||||
|
|
||||||
|
pszServerName = HeapAlloc(hProcessHeap, 0, (cch + 1) * sizeof(CHAR));
|
||||||
|
if (!pszServerName)
|
||||||
|
{
|
||||||
|
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
|
||||||
|
ERR("HeapAlloc failed!\n");
|
||||||
|
goto Cleanup;
|
||||||
|
}
|
||||||
|
|
||||||
|
WideCharToMultiByte(CP_ACP, 0, ppi4w[i].pServerName, -1, pszServerName, cch + 1, NULL, NULL);
|
||||||
|
StringCchCopyA(ppi4a[i].pServerName, cch + 1, pszServerName);
|
||||||
|
|
||||||
|
HeapFree(hProcessHeap, 0, pszServerName);
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
case 5:
|
||||||
|
{
|
||||||
|
if (ppi5w[i].pPrinterName)
|
||||||
|
{
|
||||||
|
// Convert Unicode pPrinterName to a ANSI string pszPrinterName.
|
||||||
|
cch = wcslen(ppi5w[i].pPrinterName);
|
||||||
|
|
||||||
|
pszPrinterName = HeapAlloc(hProcessHeap, 0, (cch + 1) * sizeof(CHAR));
|
||||||
|
if (!pszPrinterName)
|
||||||
|
{
|
||||||
|
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
|
||||||
|
ERR("HeapAlloc failed!\n");
|
||||||
|
goto Cleanup;
|
||||||
|
}
|
||||||
|
|
||||||
|
WideCharToMultiByte(CP_ACP, 0, ppi5w[i].pPrinterName, -1, pszPrinterName, cch + 1, NULL, NULL);
|
||||||
|
StringCchCopyA(ppi5a[i].pPrinterName, cch + 1, pszPrinterName);
|
||||||
|
|
||||||
|
HeapFree(hProcessHeap, 0, pszPrinterName);
|
||||||
|
}
|
||||||
|
|
||||||
|
if (ppi5w[i].pPortName)
|
||||||
|
{
|
||||||
|
// Convert Unicode pPortName to a ANSI string pszPortName.
|
||||||
|
cch = wcslen(ppi5w[i].pPortName);
|
||||||
|
|
||||||
|
pszPortName = HeapAlloc(hProcessHeap, 0, (cch + 1) * sizeof(CHAR));
|
||||||
|
if (!pszPortName)
|
||||||
|
{
|
||||||
|
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
|
||||||
|
ERR("HeapAlloc failed!\n");
|
||||||
|
goto Cleanup;
|
||||||
|
}
|
||||||
|
|
||||||
|
WideCharToMultiByte(CP_ACP, 0, ppi5w[i].pPortName, -1, pszPortName, cch + 1, NULL, NULL);
|
||||||
|
StringCchCopyA(ppi5a[i].pPortName, cch + 1, pszPortName);
|
||||||
|
|
||||||
|
HeapFree(hProcessHeap, 0, pszPortName);
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
} // switch
|
||||||
|
} // for
|
||||||
|
|
||||||
|
Cleanup:
|
||||||
|
|
||||||
|
return bReturnValue;
|
||||||
}
|
}
|
||||||
|
|
||||||
BOOL WINAPI
|
BOOL WINAPI
|
||||||
|
|
|
||||||
Loading…
Add table
Add a link
Reference in a new issue