[ekohl] 51935: [MSPORTS] - Try to read the PortName registry value and get the port number from the name. - Determine the port number for parallel ports the same way we determine the port number fo...

Author: ekohl
Date: Thu May 26 21:20:06 2011
New Revision: 51935

URL: http://svn.reactos.org/svn/reactos?rev=51935&view=rev
Log:
[MSPORTS]
- Try to read the PortName registry value and get the port number from the name.
- Determine the port number for parallel ports the same way we determine the port number
for serial ports, except for the use of the com port database.

Modified:
    trunk/reactos/dll/win32/msports/classinst.c

Modified: trunk/reactos/dll/win32/msports/classinst.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/msports/classins…
==============================================================================
--- trunk/reactos/dll/win32/msports/classinst.c [iso-8859-1] (original)
+++ trunk/reactos/dll/win32/msports/classinst.c [iso-8859-1] Thu May 26 21:20:06 2011
@@ -23,6 +23,9 @@
     ParallelPort,
     SerialPort
 } PORT_TYPE;
+
+LPWSTR pszCom = L"COM";
+LPWSTR pszLpt = L"LPT";
 
 
 BOOL
@@ -243,10 +246,12 @@
 {
     WCHAR szDeviceDescription[256];
     WCHAR szFriendlyName[256];
-    WCHAR szPortName[5];
-    DWORD dwPortNumber;
+    WCHAR szPortName[8];
+    DWORD dwPortNumber = 0;
+    DWORD dwSize;
     HCOMDB hComDB = HCOMDB_INVALID_HANDLE_VALUE;
     HKEY hKey;
+    LONG lError;
 
     TRACE("InstallSerialPort(%p, %p)\n",
           DeviceInfoSet, DeviceInfoData);
@@ -254,9 +259,40 @@
     /* Open the com port database */
     ComDBOpen(&hComDB);
 
+    /* Try to read the 'PortName' value and determine the port number */
+    hKey = SetupDiCreateDevRegKeyW(DeviceInfoSet,
+                                   DeviceInfoData,
+                                   DICS_FLAG_GLOBAL,
+                                   0,
+                                   DIREG_DEV,
+                                   NULL,
+                                   NULL);
+    if (hKey != INVALID_HANDLE_VALUE)
+    {
+        dwSize = sizeof(szPortName);
+        lError = RegQueryValueEx(hKey,
+                                 L"PortName",
+                                 NULL,
+                                 NULL,
+                                 (PBYTE)szPortName,
+                                 &dwSize);
+        if (lError  == ERROR_SUCCESS)
+        {
+            if (_wcsnicmp(szPortName, pszCom, wcslen(pszCom)) == 0)
+            {
+                dwPortNumber = _wtoi(szPortName + wcslen(pszCom));
+                TRACE("COM port number found: %lu\n", dwPortNumber);
+            }
+        }
+
+        RegCloseKey(hKey);
+    }
+
     /* Determine the port number from its resources ... */
-    dwPortNumber = GetSerialPortNumber(DeviceInfoSet,
-                                       DeviceInfoData);
+    if (dwPortNumber == 0)
+        dwPortNumber = GetSerialPortNumber(DeviceInfoSet,
+                                           DeviceInfoData);
+
     if (dwPortNumber != 0)
     {
         /* ... and claim the port number in the database */
@@ -273,7 +309,7 @@
     }
 
     /* Build the name of the port device */
-    swprintf(szPortName, L"COM%u", dwPortNumber);
+    swprintf(szPortName, L"%s%u", pszCom, dwPortNumber);
 
     /* Close the com port database */
     if (hComDB != HCOMDB_INVALID_HANDLE_VALUE)
@@ -346,23 +382,85 @@
 {
     WCHAR szDeviceDescription[256];
     WCHAR szFriendlyName[256];
-    WCHAR szPortName[5];
-    DWORD dwPortNumber;
+    WCHAR szPortName[8];
+    DWORD dwPortNumber = 0;
+    DWORD dwSize;
+    LONG lError;
+    HKEY hKey;
 
     TRACE("InstallParallelPort(%p, %p)\n",
           DeviceInfoSet, DeviceInfoData);
 
-    dwPortNumber = GetParallelPortNumber(DeviceInfoSet,
-                                         DeviceInfoData);
+    /* Try to read the 'PortName' value and determine the port number */
+    hKey = SetupDiCreateDevRegKeyW(DeviceInfoSet,
+                                   DeviceInfoData,
+                                   DICS_FLAG_GLOBAL,
+                                   0,
+                                   DIREG_DEV,
+                                   NULL,
+                                   NULL);
+    if (hKey != INVALID_HANDLE_VALUE)
+    {
+        dwSize = sizeof(szPortName);
+        lError = RegQueryValueEx(hKey,
+                                 L"PortName",
+                                 NULL,
+                                 NULL,
+                                 (PBYTE)szPortName,
+                                 &dwSize);
+        if (lError  == ERROR_SUCCESS)
+        {
+            if (_wcsnicmp(szPortName, pszLpt, wcslen(pszLpt)) == 0)
+            {
+                dwPortNumber = _wtoi(szPortName + wcslen(pszLpt));
+                TRACE("LPT port number found: %lu\n", dwPortNumber);
+            }
+        }
+
+        RegCloseKey(hKey);
+    }
+
+    /* ... try to determine the port number from its resources */
+    if (dwPortNumber == 0)
+        dwPortNumber = GetParallelPortNumber(DeviceInfoSet,
+                                             DeviceInfoData);
+
+    if (dwPortNumber == 0)
+    {
+        /* FIXME */
+    }
+
     if (dwPortNumber != 0)
     {
-        swprintf(szPortName, L"LPT%u", dwPortNumber);
+        swprintf(szPortName, L"%s%u", pszLpt, dwPortNumber);
     }
     else
     {
         wcscpy(szPortName, L"LPTx");
     }
 
+    if (dwPortNumber != 0)
+    {
+    /* Set the 'PortName' value */
+    hKey = SetupDiCreateDevRegKeyW(DeviceInfoSet,
+                                   DeviceInfoData,
+                                   DICS_FLAG_GLOBAL,
+                                   0,
+                                   DIREG_DEV,
+                                   NULL,
+                                   NULL);
+    if (hKey != INVALID_HANDLE_VALUE)
+    {
+        RegSetValueExW(hKey,
+                       L"PortName",
+                       0,
+                       REG_SZ,
+                       (LPBYTE)szPortName,
+                       (wcslen(szPortName) + 1) * sizeof(WCHAR));
+
+        RegCloseKey(hKey);
+    }
+    }
 
     /* Install the device */
     if (!SetupDiInstallDevice(DeviceInfoSet,
@@ -371,6 +469,7 @@
         return GetLastError();
     }
 
+    /* Get the device description... */
     if (SetupDiGetDeviceRegistryPropertyW(DeviceInfoSet,
                                           DeviceInfoData,
                                           SPDRP_DEVICEDESC,
@@ -379,6 +478,7 @@
                                           256 * sizeof(WCHAR),
                                           NULL))
     {
+        /* ... and use it to build a new friendly name */
         swprintf(szFriendlyName,
                  L"%s (%s)",
                  szDeviceDescription,
@@ -386,8 +486,9 @@
     }
     else
     {
+        /* ... or build a generic friendly name */
         swprintf(szFriendlyName,
-                 L"Serial Port (%s)",
+                 L"Parallel Port (%s)",
                  szPortName);
     }