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- /*
- * tclWinReg.c --
- *
- * This file contains the implementation of the "registry" Tcl
- * built-in command. This command is built as a dynamically
- * loadable extension in a separate DLL.
- *
- * Copyright (c) 1997 by Sun Microsystems, Inc.
- *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
- *
- * SCCS: @(#) tclWinReg.c 1.8 97/08/01 11:17:49
- */
-
- #include <tcl.h>
- #include <stdlib.h>
-
- #define WIN32_LEAN_AND_MEAN
- #include <windows.h>
- #undef WIN32_LEAN_AND_MEAN
-
- /*
- * VC++ has an alternate entry point called DllMain, so we need to rename
- * our entry point.
- */
-
- #ifndef STATIC_BUILD
- #if defined(_MSC_VER)
- # define EXPORT(a,b) __declspec(dllexport) a b
- # define DllEntryPoint DllMain
- #else
- # if defined(__BORLANDC__)
- # define EXPORT(a,b) a _export b
- # else
- # define EXPORT(a,b) a b
- # endif
- #endif
- #endif
-
- /*
- * The following macros convert between different endian ints.
- */
-
- #define SWAPWORD(x) MAKEWORD(HIBYTE(x), LOBYTE(x))
- #define SWAPLONG(x) MAKELONG(SWAPWORD(HIWORD(x)), SWAPWORD(LOWORD(x)))
-
- /*
- * The following flag is used in OpenKeys to indicate that the specified
- * key should be created if it doesn't currently exist.
- */
-
- #define REG_CREATE 1
-
- /*
- * The following tables contain the mapping from registry root names
- * to the system predefined keys.
- */
-
- static char *rootKeyNames[] = {
- "HKEY_LOCAL_MACHINE", "HKEY_USERS", "HKEY_CLASSES_ROOT",
- "HKEY_CURRENT_USER", "HKEY_CURRENT_CONFIG", NULL
- };
-
- static HKEY rootKeys[] = {
- HKEY_LOCAL_MACHINE, HKEY_USERS, HKEY_CLASSES_ROOT, HKEY_CURRENT_USER,
- HKEY_CURRENT_CONFIG, HKEY_PERFORMANCE_DATA, HKEY_DYN_DATA
- };
-
- /*
- * The following table maps from registry types to strings. Note that
- * the indices for this array are the same as the constants for the
- * known registry types so we don't need a separate table to hold the
- * mapping.
- */
-
- static char *typeNames[] = {
- "none", "sz", "expand_sz", "binary", "dword",
- "dword_big_endian", "link", "multi_sz", "resource_list", NULL
- };
-
- static DWORD lastType = REG_RESOURCE_REQUIREMENTS_LIST;
-
-
- /*
- * Declarations for functions defined in this file.
- */
-
- static void AppendSystemError(Tcl_Interp *interp, DWORD error);
- static DWORD ConvertDWORD(DWORD type, DWORD value);
- static int DeleteKey(Tcl_Interp *interp, Tcl_Obj *keyNameObj);
- static int DeleteValue(Tcl_Interp *interp, Tcl_Obj *keyNameObj,
- Tcl_Obj *valueNameObj);
- static int GetKeyNames(Tcl_Interp *interp, Tcl_Obj *keyNameObj,
- Tcl_Obj *patternObj);
- static int GetType(Tcl_Interp *interp, Tcl_Obj *keyNameObj,
- Tcl_Obj *valueNameObj);
- static int GetValue(Tcl_Interp *interp, Tcl_Obj *keyNameObj,
- Tcl_Obj *valueNameObj);
- static int GetValueNames(Tcl_Interp *interp, Tcl_Obj *keyNameObj,
- Tcl_Obj *patternObj);
- static int OpenKey(Tcl_Interp *interp, Tcl_Obj *keyNameObj,
- REGSAM mode, int flags, HKEY *keyPtr);
- static DWORD OpenSubKey(char *hostName, HKEY rootKey,
- char *keyName, REGSAM mode, int flags,
- HKEY *keyPtr);
- static int ParseKeyName(Tcl_Interp *interp, char *name,
- char **hostNamePtr, HKEY *rootKeyPtr,
- char **keyNamePtr);
- static DWORD RecursiveDeleteKey(HKEY hStartKey, LPTSTR pKeyName);
- static int RegistryObjCmd(ClientData clientData,
- Tcl_Interp *interp, int objc, Tcl_Obj * CONST objv[]);
- static int SetValue(Tcl_Interp *interp, Tcl_Obj *keyNameObj,
- Tcl_Obj *valueNameObj, Tcl_Obj *dataObj,
- Tcl_Obj *typeObj);
-
- EXTERN EXPORT(int,Registry_Init)(Tcl_Interp *interp);
-
- /*
- *----------------------------------------------------------------------
- *
- * DllEntryPoint --
- *
- * This wrapper function is used by Windows to invoke the
- * initialization code for the DLL. If we are compiling
- * with Visual C++, this routine will be renamed to DllMain.
- * routine.
- *
- * Results:
- * Returns TRUE;
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
- #ifdef __WIN32__
- #ifndef STATIC_BUILD
- BOOL APIENTRY
- DllEntryPoint(
- HINSTANCE hInst, /* Library instance handle. */
- DWORD reason, /* Reason this function is being called. */
- LPVOID reserved) /* Not used. */
- {
- return TRUE;
- }
- #endif
- #endif
-
- /*
- *----------------------------------------------------------------------
- *
- * Registry_Init --
- *
- * This procedure initializes the registry command.
- *
- * Results:
- * A standard Tcl result.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
- EXPORT(int,Registry_Init)(
- Tcl_Interp *interp)
- {
- Tcl_CreateObjCommand(interp, "registry", RegistryObjCmd, NULL, NULL);
- return Tcl_PkgProvide(interp, "registry", "1.0");
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * RegistryObjCmd --
- *
- * This function implements the Tcl "registry" command.
- *
- * Results:
- * A standard Tcl result.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
- static int
- RegistryObjCmd(
- ClientData clientData, /* Not used. */
- Tcl_Interp *interp, /* Current interpreter. */
- int objc, /* Number of arguments. */
- Tcl_Obj * CONST objv[]) /* Argument values. */
- {
- int index;
- char *errString;
-
- static char *subcommands[] = { "delete", "get", "keys", "set", "type",
- "values", (char *) NULL };
- enum SubCmdIdx { DeleteIdx, GetIdx, KeysIdx, SetIdx, TypeIdx, ValuesIdx };
-
- if (objc < 2) {
- Tcl_WrongNumArgs(interp, objc, objv, "option ?arg arg ...?");
- return TCL_ERROR;
- }
-
- if (Tcl_GetIndexFromObj(interp, objv[1], subcommands, "option", 0, &index)
- != TCL_OK) {
- return TCL_ERROR;
- }
-
- switch (index) {
- case DeleteIdx: /* delete */
- if (objc == 3) {
- return DeleteKey(interp, objv[2]);
- } else if (objc == 4) {
- return DeleteValue(interp, objv[2], objv[3]);
- }
- errString = "keyName ?valueName?";
- break;
- case GetIdx: /* get */
- if (objc == 4) {
- return GetValue(interp, objv[2], objv[3]);
- }
- errString = "keyName valueName";
- break;
- case KeysIdx: /* keys */
- if (objc == 3) {
- return GetKeyNames(interp, objv[2], NULL);
- } else if (objc == 4) {
- return GetKeyNames(interp, objv[2], objv[3]);
- }
- errString = "keyName ?pattern?";
- break;
- case SetIdx: /* set */
- if (objc == 3) {
- HKEY key;
-
- /*
- * Create the key and then close it immediately.
- */
-
- if (OpenKey(interp, objv[2], KEY_ALL_ACCESS, 1, &key)
- != TCL_OK) {
- return TCL_ERROR;
- }
- RegCloseKey(key);
- return TCL_OK;
- } else if (objc == 5 || objc == 6) {
- Tcl_Obj *typeObj = (objc == 5) ? NULL : objv[5];
- return SetValue(interp, objv[2], objv[3], objv[4], typeObj);
- }
- errString = "keyName ?valueName data ?type??";
- break;
- case TypeIdx: /* type */
- if (objc == 4) {
- return GetType(interp, objv[2], objv[3]);
- }
- errString = "keyName valueName";
- break;
- case ValuesIdx: /* values */
- if (objc == 3) {
- return GetValueNames(interp, objv[2], NULL);
- } else if (objc == 4) {
- return GetValueNames(interp, objv[2], objv[3]);
- }
- errString = "keyName ?pattern?";
- break;
- }
- Tcl_WrongNumArgs(interp, 2, objv, errString);
- return TCL_ERROR;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * DeleteKey --
- *
- * This function deletes a registry key.
- *
- * Results:
- * A standard Tcl result.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
- static int
- DeleteKey(
- Tcl_Interp *interp, /* Current interpreter. */
- Tcl_Obj *keyNameObj) /* Name of key to delete. */
- {
- char *tail, *buffer, *hostName, *keyName;
- HKEY rootKey, subkey;
- DWORD result;
- int length;
- Tcl_Obj *resultPtr;
-
- /*
- * Find the parent of the key being deleted and open it.
- */
-
- keyName = Tcl_GetStringFromObj(keyNameObj, &length);
- buffer = ckalloc(length + 1);
- strcpy(buffer, keyName);
-
- if (ParseKeyName(interp, buffer, &hostName, &rootKey, &keyName)
- != TCL_OK) {
- ckfree(buffer);
- return TCL_ERROR;
- }
-
- resultPtr = Tcl_GetObjResult(interp);
- if (*keyName == '\0') {
- Tcl_AppendToObj(resultPtr, "bad key: cannot delete root keys", -1);
- ckfree(buffer);
- return TCL_ERROR;
- }
-
- tail = strrchr(keyName, '\\');
- if (tail) {
- *tail++ = '\0';
- } else {
- tail = keyName;
- keyName = NULL;
- }
-
- result = OpenSubKey(hostName, rootKey, keyName,
- KEY_ENUMERATE_SUB_KEYS | DELETE, 0, &subkey);
- if (result != ERROR_SUCCESS) {
- ckfree(buffer);
- if (result == ERROR_FILE_NOT_FOUND) {
- return TCL_OK;
- } else {
- Tcl_AppendToObj(resultPtr, "unable to delete key: ", -1);
- AppendSystemError(interp, result);
- return TCL_ERROR;
- }
- }
-
- /*
- * Now we recursively delete the key and everything below it.
- */
-
- result = RecursiveDeleteKey(subkey, tail);
-
- if (result != ERROR_SUCCESS && result != ERROR_FILE_NOT_FOUND) {
- Tcl_AppendToObj(resultPtr, "unable to delete key: ", -1);
- AppendSystemError(interp, result);
- result = TCL_ERROR;
- } else {
- result = TCL_OK;
- }
-
- RegCloseKey(subkey);
- ckfree(buffer);
- return result;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * DeleteValue --
- *
- * This function deletes a value from a registry key.
- *
- * Results:
- * A standard Tcl result.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
- static int
- DeleteValue(
- Tcl_Interp *interp, /* Current interpreter. */
- Tcl_Obj *keyNameObj, /* Name of key. */
- Tcl_Obj *valueNameObj) /* Name of value to delete. */
- {
- HKEY key;
- char *valueName;
- int length;
- DWORD result;
- Tcl_Obj *resultPtr;
-
- /*
- * Attempt to open the key for deletion.
- */
-
- if (OpenKey(interp, keyNameObj, KEY_SET_VALUE, 0, &key)
- != TCL_OK) {
- return TCL_ERROR;
- }
-
- resultPtr = Tcl_GetObjResult(interp);
- valueName = Tcl_GetStringFromObj(valueNameObj, &length);
- result = RegDeleteValue(key, valueName);
- if (result != ERROR_SUCCESS) {
- Tcl_AppendStringsToObj(resultPtr, "unable to delete value \"",
- Tcl_GetStringFromObj(valueNameObj, NULL), "\" from key \"",
- Tcl_GetStringFromObj(keyNameObj, NULL), "\": ", NULL);
- AppendSystemError(interp, result);
- result = TCL_ERROR;
- } else {
- result = TCL_OK;
- }
- RegCloseKey(key);
- return result;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * GetKeyNames --
- *
- * This function enumerates the subkeys of a given key. If the
- * optional pattern is supplied, then only keys that match the
- * pattern will be returned.
- *
- * Results:
- * Returns the list of subkeys in the result object of the
- * interpreter, or an error message on failure.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
- static int
- GetKeyNames(
- Tcl_Interp *interp, /* Current interpreter. */
- Tcl_Obj *keyNameObj, /* Key to enumerate. */
- Tcl_Obj *patternObj) /* Optional match pattern. */
- {
- HKEY key;
- DWORD index;
- char buffer[MAX_PATH+1], *pattern;
- Tcl_Obj *resultPtr;
- int result = TCL_OK;
-
- /*
- * Attempt to open the key for enumeration.
- */
-
- if (OpenKey(interp, keyNameObj, KEY_ENUMERATE_SUB_KEYS, 0, &key)
- != TCL_OK) {
- return TCL_ERROR;
- }
-
- if (patternObj) {
- pattern = Tcl_GetStringFromObj(patternObj, NULL);
- } else {
- pattern = NULL;
- }
-
- /*
- * Enumerate over the subkeys until we get an error, indicating the
- * end of the list.
- */
-
- resultPtr = Tcl_GetObjResult(interp);
- for (index = 0; RegEnumKey(key, index, buffer, MAX_PATH+1)
- == ERROR_SUCCESS; index++) {
- if (pattern && !Tcl_StringMatch(buffer, pattern)) {
- continue;
- }
- result = Tcl_ListObjAppendElement(interp, resultPtr,
- Tcl_NewStringObj(buffer, -1));
- if (result != TCL_OK) {
- break;
- }
- }
-
- RegCloseKey(key);
- return result;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * GetType --
- *
- * This function gets the type of a given registry value and
- * places it in the interpreter result.
- *
- * Results:
- * Returns a normal Tcl result.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
- static int
- GetType(
- Tcl_Interp *interp, /* Current interpreter. */
- Tcl_Obj *keyNameObj, /* Name of key. */
- Tcl_Obj *valueNameObj) /* Name of value to get. */
- {
- HKEY key;
- Tcl_Obj *resultPtr;
- DWORD result;
- DWORD type;
-
- /*
- * Attempt to open the key for reading.
- */
-
- if (OpenKey(interp, keyNameObj, KEY_QUERY_VALUE, 0, &key)
- != TCL_OK) {
- return TCL_ERROR;
- }
-
- /*
- * Get the type of the value.
- */
-
- resultPtr = Tcl_GetObjResult(interp);
-
- result = RegQueryValueEx(key, Tcl_GetStringFromObj(valueNameObj, NULL),
- NULL, &type, NULL, NULL);
- RegCloseKey(key);
-
- if (result != ERROR_SUCCESS) {
- Tcl_AppendStringsToObj(resultPtr, "unable to get type of value \"",
- Tcl_GetStringFromObj(valueNameObj, NULL), "\" from key \"",
- Tcl_GetStringFromObj(keyNameObj, NULL), "\": ", NULL);
- AppendSystemError(interp, result);
- return TCL_ERROR;
- }
-
- /*
- * Set the type into the result. Watch out for unknown types.
- * If we don't know about the type, just use the numeric value.
- */
-
- if (type > lastType) {
- Tcl_SetIntObj(resultPtr, type);
- } else {
- Tcl_SetStringObj(resultPtr, typeNames[type], -1);
- }
- return TCL_OK;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * GetValue --
- *
- * This function gets the contents of a registry value and places
- * a list containing the data and the type in the interpreter
- * result.
- *
- * Results:
- * Returns a normal Tcl result.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
- static int
- GetValue(
- Tcl_Interp *interp, /* Current interpreter. */
- Tcl_Obj *keyNameObj, /* Name of key. */
- Tcl_Obj *valueNameObj) /* Name of value to get. */
- {
- HKEY key;
- char *valueName;
- DWORD result, length, type;
- Tcl_Obj *resultPtr;
- Tcl_DString data;
-
- /*
- * Attempt to open the key for reading.
- */
-
- if (OpenKey(interp, keyNameObj, KEY_QUERY_VALUE, 0, &key)
- != TCL_OK) {
- return TCL_ERROR;
- }
-
- /*
- * Get the value once to determine the length then again to store
- * the data in the buffer.
- */
-
- Tcl_DStringInit(&data);
- resultPtr = Tcl_GetObjResult(interp);
-
- valueName = Tcl_GetStringFromObj(valueNameObj, (int*) &length);
- result = RegQueryValueEx(key, valueName, NULL, &type, NULL, &length);
- if (result == ERROR_SUCCESS) {
- Tcl_DStringSetLength(&data, length);
- result = RegQueryValueEx(key, valueName, NULL, &type,
- (LPBYTE) Tcl_DStringValue(&data), &length);
- }
- RegCloseKey(key);
- if (result != ERROR_SUCCESS) {
- Tcl_AppendStringsToObj(resultPtr, "unable to get value \"",
- Tcl_GetStringFromObj(valueNameObj, NULL), "\" from key \"",
- Tcl_GetStringFromObj(keyNameObj, NULL), "\": ", NULL);
- AppendSystemError(interp, result);
- Tcl_DStringFree(&data);
- return TCL_ERROR;
- }
-
- /*
- * If the data is a 32-bit quantity, store it as an integer object. If it
- * is a multi-string, store it as a list of strings. For null-terminated
- * strings, append up the to first null. Otherwise, store it as a binary
- * string.
- */
-
- if (type == REG_DWORD || type == REG_DWORD_BIG_ENDIAN) {
- Tcl_SetIntObj(resultPtr, ConvertDWORD(type,
- *((DWORD*) Tcl_DStringValue(&data))));
- } else if (type == REG_MULTI_SZ) {
- char *p = Tcl_DStringValue(&data);
- char *lastChar = Tcl_DStringValue(&data) + Tcl_DStringLength(&data);
-
- /*
- * Multistrings are stored as an array of null-terminated strings,
- * terminated by two null characters. Also do a bounds check in
- * case we get bogus data.
- */
-
- while (p < lastChar && *p != '\0') {
- Tcl_ListObjAppendElement(interp, resultPtr,
- Tcl_NewStringObj(p, -1));
- while (*p++ != '\0') {}
- }
- } else if ((type == REG_SZ) || (type == REG_EXPAND_SZ)) {
- Tcl_SetStringObj(resultPtr, Tcl_DStringValue(&data), -1);
- } else {
- Tcl_SetStringObj(resultPtr, Tcl_DStringValue(&data), length);
- }
- Tcl_DStringFree(&data);
- return result;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * GetValueNames --
- *
- * This function enumerates the values of the a given key. If
- * the optional pattern is supplied, then only value names that
- * match the pattern will be returned.
- *
- * Results:
- * Returns the list of value names in the result object of the
- * interpreter, or an error message on failure.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
- static int
- GetValueNames(
- Tcl_Interp *interp, /* Current interpreter. */
- Tcl_Obj *keyNameObj, /* Key to enumerate. */
- Tcl_Obj *patternObj) /* Optional match pattern. */
- {
- HKEY key;
- Tcl_Obj *resultPtr;
- DWORD index, size, result;
- Tcl_DString buffer;
- char *pattern;
-
- /*
- * Attempt to open the key for enumeration.
- */
-
- if (OpenKey(interp, keyNameObj, KEY_QUERY_VALUE, 0, &key)
- != TCL_OK) {
- return TCL_ERROR;
- }
-
- resultPtr = Tcl_GetObjResult(interp);
-
- /*
- * Query the key to determine the appropriate buffer size to hold the
- * largest value name plus the terminating null.
- */
-
- result = RegQueryInfoKey(key, NULL, NULL, NULL, NULL, NULL, NULL, &index,
- &size, NULL, NULL, NULL);
- if (result != ERROR_SUCCESS) {
- Tcl_AppendStringsToObj(resultPtr, "unable to query key \"",
- Tcl_GetStringFromObj(keyNameObj, NULL), "\": ", NULL);
- AppendSystemError(interp, result);
- RegCloseKey(key);
- result = TCL_ERROR;
- goto done;
- }
- size++;
-
-
- Tcl_DStringInit(&buffer);
- Tcl_DStringSetLength(&buffer, size);
- index = 0;
- result = TCL_OK;
-
- if (patternObj) {
- pattern = Tcl_GetStringFromObj(patternObj, NULL);
- } else {
- pattern = NULL;
- }
-
- /*
- * Enumerate the values under the given subkey until we get an error,
- * indicating the end of the list. Note that we need to reset size
- * after each iteration because RegEnumValue smashes the old value.
- */
-
- while (RegEnumValue(key, index, Tcl_DStringValue(&buffer), &size, NULL,
- NULL, NULL, NULL) == ERROR_SUCCESS) {
- if (!pattern || Tcl_StringMatch(Tcl_DStringValue(&buffer), pattern)) {
- result = Tcl_ListObjAppendElement(interp, resultPtr,
- Tcl_NewStringObj(Tcl_DStringValue(&buffer), size));
- if (result != TCL_OK) {
- break;
- }
- }
- index++;
- size = Tcl_DStringLength(&buffer);
- }
- Tcl_DStringFree(&buffer);
-
- done:
- RegCloseKey(key);
- return result;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * OpenKey --
- *
- * This function opens the specified key. This function is a
- * simple wrapper around ParseKeyName and OpenSubKey.
- *
- * Results:
- * Returns the opened key in the keyPtr argument and a Tcl
- * result code.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
- static int
- OpenKey(
- Tcl_Interp *interp, /* Current interpreter. */
- Tcl_Obj *keyNameObj, /* Key to open. */
- REGSAM mode, /* Access mode. */
- int flags, /* 0 or REG_CREATE. */
- HKEY *keyPtr) /* Returned HKEY. */
- {
- char *keyName, *buffer, *hostName;
- int length;
- HKEY rootKey;
- DWORD result;
-
- keyName = Tcl_GetStringFromObj(keyNameObj, &length);
- buffer = ckalloc(length + 1);
- strcpy(buffer, keyName);
-
- result = ParseKeyName(interp, buffer, &hostName, &rootKey, &keyName);
- if (result == TCL_OK) {
- result = OpenSubKey(hostName, rootKey, keyName, mode, flags, keyPtr);
- if (result != ERROR_SUCCESS) {
- Tcl_Obj *resultPtr = Tcl_GetObjResult(interp);
- Tcl_AppendToObj(resultPtr, "unable to open key: ", -1);
- AppendSystemError(interp, result);
- result = TCL_ERROR;
- } else {
- result = TCL_OK;
- }
- }
-
- ckfree(buffer);
- return result;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * OpenSubKey --
- *
- * This function opens a given subkey of a root key on the
- * specified host.
- *
- * Results:
- * Returns the opened key in the keyPtr and a Windows error code
- * as the return value.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
- static DWORD
- OpenSubKey(
- char *hostName, /* Host to access, or NULL for local. */
- HKEY rootKey, /* Root registry key. */
- char *keyName, /* Subkey name. */
- REGSAM mode, /* Access mode. */
- int flags, /* 0 or REG_CREATE. */
- HKEY *keyPtr) /* Returned HKEY. */
- {
- DWORD result;
-
- /*
- * Attempt to open the root key on a remote host if necessary.
- */
-
- if (hostName) {
- result = RegConnectRegistry(hostName, rootKey, &rootKey);
- if (result != ERROR_SUCCESS) {
- return result;
- }
- }
-
- /*
- * Now open the specified key with the requested permissions. Note
- * that this key must be closed by the caller.
- */
-
- if (flags & REG_CREATE) {
- DWORD create;
- result = RegCreateKeyEx(rootKey, keyName, 0, "",
- REG_OPTION_NON_VOLATILE, mode, NULL, keyPtr, &create);
- } else {
- result = RegOpenKeyEx(rootKey, keyName, 0, mode, keyPtr);
- }
-
- /*
- * Be sure to close the root key since we are done with it now.
- */
-
- if (hostName) {
- RegCloseKey(rootKey);
- }
- return result;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * ParseKeyName --
- *
- * This function parses a key name into the host, root, and subkey
- * parts.
- *
- * Results:
- * The pointers to the start of the host and subkey names are
- * returned in the hostNamePtr and keyNamePtr variables. The
- * specified root HKEY is returned in rootKeyPtr. Returns
- * a standard Tcl result.
- *
- *
- * Side effects:
- * Modifies the name string by inserting nulls.
- *
- *----------------------------------------------------------------------
- */
-
- static int
- ParseKeyName(
- Tcl_Interp *interp, /* Current interpreter. */
- char *name,
- char **hostNamePtr,
- HKEY *rootKeyPtr,
- char **keyNamePtr)
- {
- char *rootName;
- int result, index;
- Tcl_Obj *rootObj, *resultPtr = Tcl_GetObjResult(interp);
-
- /*
- * Split the key into host and root portions.
- */
-
- *hostNamePtr = *keyNamePtr = rootName = NULL;
- if (name[0] == '\\') {
- if (name[1] == '\\') {
- *hostNamePtr = name;
- for (rootName = name+2; *rootName != '\0'; rootName++) {
- if (*rootName == '\\') {
- *rootName++ = '\0';
- break;
- }
- }
- }
- } else {
- rootName = name;
- }
- if (!rootName) {
- Tcl_AppendStringsToObj(resultPtr, "bad key \"", name,
- "\": must start with a valid root", NULL);
- return TCL_ERROR;
- }
-
- /*
- * Split the root into root and subkey portions.
- */
-
- for (*keyNamePtr = rootName; **keyNamePtr != '\0'; (*keyNamePtr)++) {
- if (**keyNamePtr == '\\') {
- **keyNamePtr = '\0';
- (*keyNamePtr)++;
- break;
- }
- }
-
- /*
- * Look for a matching root name.
- */
-
- rootObj = Tcl_NewStringObj(rootName, -1);
- result = Tcl_GetIndexFromObj(interp, rootObj, rootKeyNames, "root name",
- TCL_EXACT, &index);
- Tcl_DecrRefCount(rootObj);
- if (result != TCL_OK) {
- return TCL_ERROR;
- }
- *rootKeyPtr = rootKeys[index];
- return TCL_OK;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * RecursiveDeleteKey --
- *
- * This function recursively deletes all the keys below a starting
- * key. Although Windows 95 does this automatically, we still need
- * to do this for Windows NT.
- *
- * Results:
- * Returns a Windows error code.
- *
- * Side effects:
- * Deletes all of the keys and values below the given key.
- *
- *----------------------------------------------------------------------
- */
-
- static DWORD
- RecursiveDeleteKey(
- HKEY startKey, /* Parent of key to be deleted. */
- char *keyName) /* Name of key to be deleted. */
- {
- DWORD result, subKeyLength;
- Tcl_DString subkey;
- HKEY hKey;
-
- /*
- * Do not allow NULL or empty key name.
- */
-
- if (!keyName || lstrlen(keyName) == '\0') {
- return ERROR_BADKEY;
- }
-
- result = RegOpenKeyEx(startKey, keyName, 0,
- KEY_ENUMERATE_SUB_KEYS | DELETE | KEY_QUERY_VALUE, &hKey);
- if (result != ERROR_SUCCESS) {
- return result;
- }
- result = RegQueryInfoKey(hKey, NULL, NULL, NULL, NULL, &subKeyLength,
- NULL, NULL, NULL, NULL, NULL, NULL);
- subKeyLength++;
- if (result != ERROR_SUCCESS) {
- return result;
- }
-
- Tcl_DStringInit(&subkey);
- Tcl_DStringSetLength(&subkey, subKeyLength);
-
- while (result == ERROR_SUCCESS) {
- /*
- * Always get index 0 because key deletion changes ordering.
- */
-
- subKeyLength = Tcl_DStringLength(&subkey);
- result=RegEnumKeyEx(hKey, 0, Tcl_DStringValue(&subkey), &subKeyLength,
- NULL, NULL, NULL, NULL);
- if (result == ERROR_NO_MORE_ITEMS) {
- result = RegDeleteKey(startKey, keyName);
- break;
- } else if (result == ERROR_SUCCESS) {
- result = RecursiveDeleteKey(hKey, Tcl_DStringValue(&subkey));
- }
- }
- Tcl_DStringFree(&subkey);
- RegCloseKey(hKey);
- return result;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * SetValue --
- *
- * This function sets the contents of a registry value. If
- * the key or value does not exist, it will be created. If it
- * does exist, then the data and type will be replaced.
- *
- * Results:
- * Returns a normal Tcl result.
- *
- * Side effects:
- * May create new keys or values.
- *
- *----------------------------------------------------------------------
- */
-
- static int
- SetValue(
- Tcl_Interp *interp, /* Current interpreter. */
- Tcl_Obj *keyNameObj, /* Name of key. */
- Tcl_Obj *valueNameObj, /* Name of value to set. */
- Tcl_Obj *dataObj, /* Data to be written. */
- Tcl_Obj *typeObj) /* Type of data to be written. */
- {
- DWORD type, result;
- HKEY key;
- int length;
- char *valueName;
- Tcl_Obj *resultPtr;
-
- if (typeObj == NULL) {
- type = REG_SZ;
- } else if (Tcl_GetIndexFromObj(interp, typeObj, typeNames, "type",
- 0, (int *) &type) != TCL_OK) {
- if (Tcl_GetIntFromObj(NULL, typeObj, (int*) &type) != TCL_OK) {
- return TCL_ERROR;
- }
- Tcl_ResetResult(interp);
- }
- if (OpenKey(interp, keyNameObj, KEY_ALL_ACCESS, 1, &key) != TCL_OK) {
- return TCL_ERROR;
- }
-
- valueName = Tcl_GetStringFromObj(valueNameObj, &length);
- resultPtr = Tcl_GetObjResult(interp);
-
- if (type == REG_DWORD || type == REG_DWORD_BIG_ENDIAN) {
- DWORD value;
- if (Tcl_GetIntFromObj(interp, dataObj, (int*) &value) != TCL_OK) {
- RegCloseKey(key);
- return TCL_ERROR;
- }
-
- value = ConvertDWORD(type, value);
- result = RegSetValueEx(key, valueName, 0, type, (BYTE*) &value,
- sizeof(DWORD));
- } else if (type == REG_MULTI_SZ) {
- Tcl_DString data;
- int objc, i;
- Tcl_Obj **objv;
- char *element;
-
- if (Tcl_ListObjGetElements(interp, dataObj, &objc, &objv) != TCL_OK) {
- RegCloseKey(key);
- return TCL_ERROR;
- }
-
- /*
- * Append the elements as null terminated strings. Note that
- * we must not assume the length of the string in case there are
- * embedded nulls, which aren't allowed in REG_MULTI_SZ values.
- */
-
- Tcl_DStringInit(&data);
- for (i = 0; i < objc; i++) {
- element = Tcl_GetStringFromObj(objv[i], NULL);
- Tcl_DStringAppend(&data, element, -1);
- Tcl_DStringSetLength(&data, Tcl_DStringLength(&data)+1);
- }
- result = RegSetValueEx(key, valueName, 0, type,
- (LPBYTE) Tcl_DStringValue(&data),
- (DWORD) (Tcl_DStringLength(&data)+1));
- Tcl_DStringFree(&data);
- } else {
- char *data = Tcl_GetStringFromObj(dataObj, &length);
-
- /*
- * Include the null in the length if we are storing a null terminated
- * string. Note that we also need to call strlen to find the first
- * null so we don't pass bad data to the registry.
- */
-
- if (type == REG_SZ || type == REG_EXPAND_SZ) {
- length = strlen(data) + 1;
- }
-
- result = RegSetValueEx(key, valueName, 0, type, (LPBYTE)data, length);
- }
- RegCloseKey(key);
- if (result != ERROR_SUCCESS) {
- Tcl_AppendToObj(resultPtr, "unable to set value: ", -1);
- AppendSystemError(interp, result);
- return TCL_ERROR;
- }
- return TCL_OK;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * AppendSystemError --
- *
- * This routine formats a Windows system error message and places
- * it into the interpreter result.
- *
- * Results:
- * None.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
- static void
- AppendSystemError(
- Tcl_Interp *interp, /* Current interpreter. */
- DWORD error) /* Result code from error. */
- {
- int length;
- char *msgbuf, id[10];
- Tcl_Obj *resultPtr = Tcl_GetObjResult(interp);
-
- sprintf(id, "%d", error);
- length = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM
- | FORMAT_MESSAGE_ALLOCATE_BUFFER, NULL, error,
- MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR)&msgbuf,
- 0, NULL);
- if (length == 0) {
- if (error == ERROR_CALL_NOT_IMPLEMENTED) {
- msgbuf = "function not supported under Win32s";
- } else {
- msgbuf = id;
- }
- } else {
- /*
- * Trim the trailing CR/LF from the system message.
- */
- if (msgbuf[length-1] == '\n') {
- msgbuf[--length] = 0;
- }
- if (msgbuf[length-1] == '\r') {
- msgbuf[--length] = 0;
- }
- }
- Tcl_SetErrorCode(interp, "WINDOWS", id, msgbuf, (char *) NULL);
- Tcl_AppendToObj(resultPtr, msgbuf, -1);
-
- if (length != 0) {
- LocalFree(msgbuf);
- }
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * ConvertDWORD --
- *
- * This function determines whether a DWORD needs to be byte
- * swapped, and returns the appropriately swapped value.
- *
- * Results:
- * Returns a converted DWORD.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
- static DWORD
- ConvertDWORD(
- DWORD type, /* Either REG_DWORD or REG_DWORD_BIG_ENDIAN */
- DWORD value) /* The value to be converted. */
- {
- DWORD order = 1;
- DWORD localType;
-
- /*
- * Check to see if the low bit is in the first byte.
- */
-
- localType = (*((char*)(&order)) == 1) ? REG_DWORD : REG_DWORD_BIG_ENDIAN;
- return (type != localType) ? SWAPLONG(value) : value;
- }
-