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/*
* Registry processing routines. Routines, common for registry
* processing frontends.
*
* Copyright 1999 Sylvain St-Germain
* Copyright 2002 Andriy Palamarchuk
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <limits.h>
#include <stdio.h>
#include <windows.h>
#include <winnt.h>
#include <winreg.h>
#include <assert.h>
#include "regproc.h"
#define REG_VAL_BUF_SIZE 4096
/* maximal number of characters in hexadecimal data line,
not including '\' character */
#define REG_FILE_HEX_LINE_LEN 76
static const CHAR *reg_class_names[] = {
"HKEY_LOCAL_MACHINE", "HKEY_USERS", "HKEY_CLASSES_ROOT",
"HKEY_CURRENT_CONFIG", "HKEY_CURRENT_USER", "HKEY_DYN_DATA"
};
#define REG_CLASS_NUMBER (sizeof(reg_class_names) / sizeof(reg_class_names[0]))
static HKEY reg_class_keys[REG_CLASS_NUMBER] = {
HKEY_LOCAL_MACHINE, HKEY_USERS, HKEY_CLASSES_ROOT,
HKEY_CURRENT_CONFIG, HKEY_CURRENT_USER, HKEY_DYN_DATA
};
/* return values */
#define NOT_ENOUGH_MEMORY 1
#define IO_ERROR 2
/* processing macros */
/* common check of memory allocation results */
#define CHECK_ENOUGH_MEMORY(p) \
if (!(p)) \
{ \
fprintf(stderr,"%s: file %s, line %d: Not enough memory\n", \
getAppName(), __FILE__, __LINE__); \
exit(NOT_ENOUGH_MEMORY); \
}
/******************************************************************************
* Converts a hex representation of a DWORD into a DWORD.
*/
static BOOL convertHexToDWord(char* str, DWORD *dw)
{
char dummy;
if (strlen(str) > 8 || sscanf(str, "%x%c", dw, &dummy) != 1) {
fprintf(stderr,"%s: ERROR, invalid hex value\n", getAppName());
return FALSE;
}
return TRUE;
}
/******************************************************************************
* Converts a hex comma separated values list into a binary string.
*/
static BYTE* convertHexCSVToHex(char *str, DWORD *size)
{
char *s;
BYTE *d, *data;
/* The worst case is 1 digit + 1 comma per byte */
*size=(strlen(str)+1)/2;
data=HeapAlloc(GetProcessHeap(), 0, *size);
CHECK_ENOUGH_MEMORY(data);
s = str;
d = data;
*size=0;
while (*s != '\0') {
UINT wc;
char dummy;
if (s[1] != ',' && s[1] != '\0' && s[2] != ',' && s[2] != '\0') {
fprintf(stderr,"%s: ERROR converting CSV hex stream. Invalid sequence at '%s'\n",
getAppName(), s);
HeapFree(GetProcessHeap(), 0, data);
return NULL;
}
if (sscanf(s, "%x%c", &wc, &dummy) < 1 || dummy != ',') {
fprintf(stderr,"%s: ERROR converting CSV hex stream. Invalid value at '%s'\n",
getAppName(), s);
HeapFree(GetProcessHeap(), 0, data);
return NULL;
}
*d++ =(BYTE)wc;
(*size)++;
/* Skip one or two digits and any comma */
while (*s && *s!=',') s++;
if (*s) s++;
}
return data;
}
/******************************************************************************
* This function returns the HKEY associated with the data type encoded in the
* value. It modifies the input parameter (key value) in order to skip this
* "now useless" data type information.
*
* Note: Updated based on the algorithm used in 'server/registry.c'
*/
static DWORD getDataType(LPSTR *lpValue, DWORD* parse_type)
{
struct data_type { const char *tag; int len; int type; int parse_type; };
static const struct data_type data_types[] = { /* actual type */ /* type to assume for parsing */
{ "\"", 1, REG_SZ, REG_SZ },
{ "str:\"", 5, REG_SZ, REG_SZ },
{ "str(2):\"", 8, REG_EXPAND_SZ, REG_SZ },
{ "hex:", 4, REG_BINARY, REG_BINARY },
{ "dword:", 6, REG_DWORD, REG_DWORD },
{ "hex(", 4, -1, REG_BINARY },
{ NULL, 0, 0, 0 }
};
const struct data_type *ptr;
int type;
for (ptr = data_types; ptr->tag; ptr++) {
if (memcmp( ptr->tag, *lpValue, ptr->len ))
continue;
/* Found! */
*parse_type = ptr->parse_type;
type=ptr->type;
*lpValue+=ptr->len;
if (type == -1) {
char* end;
/* "hex(xx):" is special */
type = (int)strtoul( *lpValue , &end, 16 );
if (**lpValue=='\0' || *end!=')' || *(end+1)!=':') {
type=REG_NONE;
} else {
*lpValue=end+2;
}
}
return type;
}
*parse_type=REG_NONE;
return REG_NONE;
}
/******************************************************************************
* Replaces escape sequences with the characters.
*/
static void REGPROC_unescape_string(LPSTR str)
{
int str_idx = 0; /* current character under analysis */
int val_idx = 0; /* the last character of the unescaped string */
int len = strlen(str);
for (str_idx = 0; str_idx < len; str_idx++, val_idx++) {
if (str[str_idx] == '\\') {
str_idx++;
switch (str[str_idx]) {
case 'n':
str[val_idx] = '\n';
break;
case '\\':
case '"':
str[val_idx] = str[str_idx];
break;
default:
fprintf(stderr,"Warning! Unrecognized escape sequence: \\%c'\n",
str[str_idx]);
str[val_idx] = str[str_idx];
break;
}
} else {
str[val_idx] = str[str_idx];
}
}
str[val_idx] = '\0';
}
/******************************************************************************
* Parses HKEY_SOME_ROOT\some\key\path to get the root key handle and
* extract the key path (what comes after the first '\').
*/
static BOOL parseKeyName(LPSTR lpKeyName, HKEY *hKey, LPSTR *lpKeyPath)
{
LPSTR lpSlash;
unsigned int i, len;
if (lpKeyName == NULL)
return FALSE;
lpSlash = strchr(lpKeyName, '\\');
if (lpSlash)
{
len = lpSlash-lpKeyName;
}
else
{
len = strlen(lpKeyName);
lpSlash = lpKeyName+len;
}
*hKey = NULL;
for (i = 0; i < REG_CLASS_NUMBER; i++) {
if (strncmp(lpKeyName, reg_class_names[i], len) == 0 &&
len == strlen(reg_class_names[i])) {
*hKey = reg_class_keys[i];
break;
}
}
if (*hKey == NULL)
return FALSE;
if (*lpSlash != '\0')
lpSlash++;
*lpKeyPath = lpSlash;
return TRUE;
}
/* Globals used by the setValue() & co */
static LPSTR currentKeyName;
static HKEY currentKeyHandle = NULL;
/******************************************************************************
* Sets the value with name val_name to the data in val_data for the currently
* opened key.
*
* Parameters:
* val_name - name of the registry value
* val_data - registry value data
*/
static LONG setValue(LPSTR val_name, LPSTR val_data)
{
LONG res;
DWORD dwDataType, dwParseType;
LPBYTE lpbData;
DWORD dwData, dwLen;
if ( (val_name == NULL) || (val_data == NULL) )
return ERROR_INVALID_PARAMETER;
if (strcmp(val_data, "-") == 0)
{
res=RegDeleteValue(currentKeyHandle,val_name);
return (res == ERROR_FILE_NOT_FOUND ? ERROR_SUCCESS : res);
}
/* Get the data type stored into the value field */
dwDataType = getDataType(&val_data, &dwParseType);
if (dwParseType == REG_SZ) /* no conversion for string */
{
REGPROC_unescape_string(val_data);
/* Compute dwLen after REGPROC_unescape_string because it may
* have changed the string length and we don't want to store
* the extra garbage in the registry.
*/
dwLen = strlen(val_data);
if (dwLen>0 && val_data[dwLen-1]=='"')
{
dwLen--;
val_data[dwLen]='\0';
}
lpbData = (BYTE*) val_data;
}
else if (dwParseType == REG_DWORD) /* Convert the dword types */
{
if (!convertHexToDWord(val_data, &dwData))
return ERROR_INVALID_DATA;
lpbData = (BYTE*)&dwData;
dwLen = sizeof(dwData);
}
else if (dwParseType == REG_BINARY) /* Convert the binary data */
{
lpbData = convertHexCSVToHex(val_data, &dwLen);
if (!lpbData)
return ERROR_INVALID_DATA;
}
else /* unknown format */
{
fprintf(stderr,"%s: ERROR, unknown data format\n", getAppName());
return ERROR_INVALID_DATA;
}
res = RegSetValueEx(
currentKeyHandle,
val_name,
0, /* Reserved */
dwDataType,
lpbData,
dwLen);
if (dwParseType == REG_BINARY)
HeapFree(GetProcessHeap(), 0, lpbData);
return res;
}
/******************************************************************************
* A helper function for processRegEntry() that opens the current key.
* That key must be closed by calling closeKey().
*/
static LONG openKey(LPSTR stdInput)
{
HKEY keyClass;
LPSTR keyPath;
DWORD dwDisp;
LONG res;
/* Sanity checks */
if (stdInput == NULL)
return ERROR_INVALID_PARAMETER;
/* Get the registry class */
if (!parseKeyName(stdInput, &keyClass, &keyPath))
return ERROR_INVALID_PARAMETER;
res = RegCreateKeyEx(
keyClass, /* Class */
keyPath, /* Sub Key */
0, /* MUST BE 0 */
NULL, /* object type */
REG_OPTION_NON_VOLATILE, /* option, REG_OPTION_NON_VOLATILE ... */
KEY_ALL_ACCESS, /* access mask, KEY_ALL_ACCESS */
NULL, /* security attribute */
&currentKeyHandle, /* result */
&dwDisp); /* disposition, REG_CREATED_NEW_KEY or
REG_OPENED_EXISTING_KEY */
if (res == ERROR_SUCCESS)
{
currentKeyName = HeapAlloc(GetProcessHeap(), 0, strlen(stdInput)+1);
CHECK_ENOUGH_MEMORY(currentKeyName);
strcpy(currentKeyName, stdInput);
}
else
{
currentKeyHandle = NULL;
}
return res;
}
/******************************************************************************
* Close the currently opened key.
*/
static void closeKey(void)
{
if (currentKeyHandle)
{
HeapFree(GetProcessHeap(), 0, currentKeyName);
RegCloseKey(currentKeyHandle);
currentKeyHandle = NULL;
}
}
/******************************************************************************
* This function is a wrapper for the setValue function. It prepares the
* land and clean the area once completed.
* Note: this function modifies the line parameter.
*
* line - registry file unwrapped line. Should have the registry value name and
* complete registry value data.
*/
static void processSetValue(LPSTR line)
{
LPSTR val_name; /* registry value name */
LPSTR val_data; /* registry value data */
int line_idx = 0; /* current character under analysis */
LONG res;
/* get value name */
if (line[line_idx] == '@' && line[line_idx + 1] == '=') {
line[line_idx] = '\0';
val_name = line;
line_idx++;
} else if (line[line_idx] == '\"') {
line_idx++;
val_name = line + line_idx;
while (TRUE) {
if (line[line_idx] == '\\') /* skip escaped character */
{
line_idx += 2;
} else {
if (line[line_idx] == '\"') {
line[line_idx] = '\0';
line_idx++;
break;
} else {
line_idx++;
}
}
}
if (line[line_idx] != '=') {
line[line_idx] = '\"';
fprintf(stderr,"Warning! unrecognized line:\n%s\n", line);
return;
}
} else {
fprintf(stderr,"Warning! unrecognized line:\n%s\n", line);
return;
}
line_idx++; /* skip the '=' character */
val_data = line + line_idx;
REGPROC_unescape_string(val_name);
res = setValue(val_name, val_data);
if ( res != ERROR_SUCCESS )
fprintf(stderr,"%s: ERROR Key %s not created. Value: %s, Data: %s\n",
getAppName(),
currentKeyName,
val_name,
val_data);
}
/******************************************************************************
* This function receives the currently read entry and performs the
* corresponding action.
*/
static void processRegEntry(LPSTR stdInput)
{
/*
* We encountered the end of the file, make sure we
* close the opened key and exit
*/
if (stdInput == NULL) {
closeKey();
return;
}
if ( stdInput[0] == '[') /* We are reading a new key */
{
LPSTR keyEnd;
closeKey(); /* Close the previous key */
/* Get rid of the square brackets */
stdInput++;
keyEnd = strrchr(stdInput, ']');
if (keyEnd)
*keyEnd='\0';
/* delete the key if we encounter '-' at the start of reg key */
if ( stdInput[0] == '-')
delete_registry_key(stdInput+1);
else if ( openKey(stdInput) != ERROR_SUCCESS )
fprintf(stderr,"%s: setValue failed to open key %s\n",
getAppName(), stdInput);
} else if( currentKeyHandle &&
(( stdInput[0] == '@') || /* reading a default @=data pair */
( stdInput[0] == '\"'))) /* reading a new value=data pair */
{
processSetValue(stdInput);
} else
{
/* Since we are assuming that the file format is valid we must be
* reading a blank line which indicates the end of this key processing
*/
closeKey();
}
}
/******************************************************************************
* Processes a registry file.
* Correctly processes comments (in # form), line continuation.
*
* Parameters:
* in - input stream to read from
*/
void processRegLines(FILE *in)
{
LPSTR line = NULL; /* line read from input stream */
ULONG lineSize = REG_VAL_BUF_SIZE;
line = HeapAlloc(GetProcessHeap(), 0, lineSize);
CHECK_ENOUGH_MEMORY(line);
while (!feof(in)) {
LPSTR s; /* The pointer into line for where the current fgets should read */
s = line;
for (;;) {
size_t size_remaining;
int size_to_get;
char *s_eol; /* various local uses */
/* Do we need to expand the buffer ? */
assert (s >= line && s <= line + lineSize);
size_remaining = lineSize - (s-line);
if (size_remaining < 2) /* room for 1 character and the \0 */
{
char *new_buffer;
size_t new_size = lineSize + REG_VAL_BUF_SIZE;
if (new_size > lineSize) /* no arithmetic overflow */
new_buffer = HeapReAlloc (GetProcessHeap(), 0, line, new_size);
else
new_buffer = NULL;
CHECK_ENOUGH_MEMORY(new_buffer);
line = new_buffer;
s = line + lineSize - size_remaining;
lineSize = new_size;
size_remaining = lineSize - (s-line);
}
/* Get as much as possible into the buffer, terminated either by
* eof, error, eol or getting the maximum amount. Abort on error.
*/
size_to_get = (size_remaining > INT_MAX ? INT_MAX : size_remaining);
if (NULL == fgets (s, size_to_get, in)) {
if (ferror(in)) {
perror ("While reading input");
exit (IO_ERROR);
} else {
assert (feof(in));
*s = '\0';
/* It is not clear to me from the definition that the
* contents of the buffer are well defined on detecting
* an eof without managing to read anything.
*/
}
}
/* If we didn't read the eol nor the eof go around for the rest */
s_eol = strchr (s, '\n');
if (!feof (in) && !s_eol) {
s = strchr (s, '\0');
/* It should be s + size_to_get - 1 but this is safer */
continue;
}
/* If it is a comment line then discard it and go around again */
if (line [0] == '#') {
s = line;
continue;
}
/* Remove any line feed. Leave s_eol on the \0 */
if (s_eol) {
*s_eol = '\0';
if (s_eol > line && *(s_eol-1) == '\r')
*--s_eol = '\0';
} else
s_eol = strchr (s, '\0');
/* If there is a concatenating \\ then go around again */
if (s_eol > line && *(s_eol-1) == '\\') {
int c;
s = s_eol-1;
/* The following error protection could be made more self-
* correcting but I thought it not worth trying.
*/
if ((c = fgetc (in)) == EOF || c != ' ' ||
(c = fgetc (in)) == EOF || c != ' ')
fprintf(stderr,"%s: ERROR - invalid continuation.\n",
getAppName());
continue;
}
break; /* That is the full virtual line */
}
processRegEntry(line);
}
processRegEntry(NULL);
HeapFree(GetProcessHeap(), 0, line);
}
/****************************************************************************
* REGPROC_print_error
*
* Print the message for GetLastError
*/
static void REGPROC_print_error(void)
{
LPVOID lpMsgBuf;
DWORD error_code;
int status;
error_code = GetLastError ();
status = FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
NULL, error_code, 0, (LPTSTR) &lpMsgBuf, 0, NULL);
if (!status) {
fprintf(stderr,"%s: Cannot display message for error %d, status %d\n",
getAppName(), error_code, GetLastError());
exit(1);
}
puts(lpMsgBuf);
LocalFree((HLOCAL)lpMsgBuf);
exit(1);
}
/******************************************************************************
* Checks whether the buffer has enough room for the string or required size.
* Resizes the buffer if necessary.
*
* Parameters:
* buffer - pointer to a buffer for string
* len - current length of the buffer in characters.
* required_len - length of the string to place to the buffer in characters.
* The length does not include the terminating null character.
*/
static void REGPROC_resize_char_buffer(CHAR **buffer, DWORD *len, DWORD required_len)
{
required_len++;
if (required_len > *len) {
*len = required_len;
if (!*buffer)
*buffer = HeapAlloc(GetProcessHeap(), 0, *len * sizeof(**buffer));
else
*buffer = HeapReAlloc(GetProcessHeap(), 0, *buffer, *len * sizeof(**buffer));
CHECK_ENOUGH_MEMORY(*buffer);
}
}
/******************************************************************************
* Prints string str to file
*/
static void REGPROC_export_string(FILE *file, CHAR *str)
{
size_t len = strlen(str);
size_t i;
/* escaping characters */
for (i = 0; i < len; i++) {
CHAR c = str[i];
switch (c) {
case '\\':
fputs("\\\\", file);
break;
case '\"':
fputs("\\\"", file);
break;
case '\n':
fputs("\\\n", file);
break;
default:
fputc(c, file);
break;
}
}
}
/******************************************************************************
* Writes contents of the registry key to the specified file stream.
*
* Parameters:
* file - writable file stream to export registry branch to.
* key - registry branch to export.
* reg_key_name_buf - name of the key with registry class.
* Is resized if necessary.
* reg_key_name_len - length of the buffer for the registry class in characters.
* val_name_buf - buffer for storing value name.
* Is resized if necessary.
* val_name_len - length of the buffer for storing value names in characters.
* val_buf - buffer for storing values while extracting.
* Is resized if necessary.
* val_size - size of the buffer for storing values in bytes.
*/
static void export_hkey(FILE *file, HKEY key,
CHAR **reg_key_name_buf, DWORD *reg_key_name_len,
CHAR **val_name_buf, DWORD *val_name_len,
BYTE **val_buf, DWORD *val_size)
{
DWORD max_sub_key_len;
DWORD max_val_name_len;
DWORD max_val_size;
DWORD curr_len;
DWORD i;
BOOL more_data;
LONG ret;
/* get size information and resize the buffers if necessary */
if (RegQueryInfoKey(key, NULL, NULL, NULL, NULL,
&max_sub_key_len, NULL,
NULL, &max_val_name_len, &max_val_size, NULL, NULL
) != ERROR_SUCCESS) {
REGPROC_print_error();
}
curr_len = strlen(*reg_key_name_buf);
REGPROC_resize_char_buffer(reg_key_name_buf, reg_key_name_len,
max_sub_key_len + curr_len + 1);
REGPROC_resize_char_buffer(val_name_buf, val_name_len,
max_val_name_len);
if (max_val_size > *val_size) {
*val_size = max_val_size;
if (!*val_buf) *val_buf = HeapAlloc(GetProcessHeap(), 0, *val_size);
else *val_buf = HeapReAlloc(GetProcessHeap(), 0, *val_buf, *val_size);
CHECK_ENOUGH_MEMORY(val_buf);
}
/* output data for the current key */
fputs("\n[", file);
fputs(*reg_key_name_buf, file);
fputs("]\n", file);
/* print all the values */
i = 0;
more_data = TRUE;
while(more_data) {
DWORD value_type;
DWORD val_name_len1 = *val_name_len;
DWORD val_size1 = *val_size;
ret = RegEnumValue(key, i, *val_name_buf, &val_name_len1, NULL,
&value_type, *val_buf, &val_size1);
if (ret != ERROR_SUCCESS) {
more_data = FALSE;
if (ret != ERROR_NO_MORE_ITEMS) {
REGPROC_print_error();
}
} else {
i++;
if ((*val_name_buf)[0]) {
fputs("\"", file);
REGPROC_export_string(file, *val_name_buf);
fputs("\"=", file);
} else {
fputs("@=", file);
}
switch (value_type) {
case REG_SZ:
case REG_EXPAND_SZ:
fputs("\"", file);
REGPROC_export_string(file, (char*) *val_buf);
fputs("\"\n", file);
break;
case REG_DWORD:
fprintf(file, "dword:%08x\n", *((DWORD *)*val_buf));
break;
default:
fprintf(stderr,"%s: warning - unsupported registry format '%d', "
"treat as binary\n",
getAppName(), value_type);
fprintf(stderr,"key name: \"%s\"\n", *reg_key_name_buf);
fprintf(stderr,"value name:\"%s\"\n\n", *val_name_buf);
/* falls through */
case REG_MULTI_SZ:
/* falls through */
case REG_BINARY: {
DWORD i1;
const CHAR *hex_prefix;
CHAR buf[20];
int cur_pos;
if (value_type == REG_BINARY) {
hex_prefix = "hex:";
} else {
hex_prefix = buf;
sprintf(buf, "hex(%d):", value_type);
}
/* position of where the next character will be printed */
/* NOTE: yes, strlen("hex:") is used even for hex(x): */
cur_pos = strlen("\"\"=") + strlen("hex:") +
strlen(*val_name_buf);
fputs(hex_prefix, file);
for (i1 = 0; i1 < val_size1; i1++) {
fprintf(file, "%02x", (unsigned int)(*val_buf)[i1]);
if (i1 + 1 < val_size1) {
fputs(",", file);
}
cur_pos += 3;
/* wrap the line */
if (cur_pos > REG_FILE_HEX_LINE_LEN) {
fputs("\\\n ", file);
cur_pos = 2;
}
}
fputs("\n", file);
break;
}
}
}
}
i = 0;
more_data = TRUE;
(*reg_key_name_buf)[curr_len] = '\\';
while(more_data) {
DWORD buf_len = *reg_key_name_len - curr_len;
ret = RegEnumKeyEx(key, i, *reg_key_name_buf + curr_len + 1, &buf_len,
NULL, NULL, NULL, NULL);
if (ret != ERROR_SUCCESS && ret != ERROR_MORE_DATA) {
more_data = FALSE;
if (ret != ERROR_NO_MORE_ITEMS) {
REGPROC_print_error();
}
} else {
HKEY subkey;
i++;
if (RegOpenKey(key, *reg_key_name_buf + curr_len + 1,
&subkey) == ERROR_SUCCESS) {
export_hkey(file, subkey, reg_key_name_buf, reg_key_name_len,
val_name_buf, val_name_len, val_buf, val_size);
RegCloseKey(subkey);
} else {
REGPROC_print_error();
}
}
}
(*reg_key_name_buf)[curr_len] = '\0';
}
/******************************************************************************
* Open file for export.
*/
static FILE *REGPROC_open_export_file(CHAR *file_name)
{
FILE *file = fopen(file_name, "w");
if (!file) {
perror("");
fprintf(stderr,"%s: Can't open file \"%s\"\n", getAppName(), file_name);
exit(1);
}
fputs("REGEDIT4\n", file);
return file;
}
/******************************************************************************
* Writes contents of the registry key to the specified file stream.
*
* Parameters:
* file_name - name of a file to export registry branch to.
* reg_key_name - registry branch to export. The whole registry is exported if
* reg_key_name is NULL or contains an empty string.
*/
BOOL export_registry_key(CHAR *file_name, CHAR *reg_key_name)
{
CHAR *reg_key_name_buf;
CHAR *val_name_buf;
BYTE *val_buf;
DWORD reg_key_name_len = KEY_MAX_LEN;
DWORD val_name_len = KEY_MAX_LEN;
DWORD val_size = REG_VAL_BUF_SIZE;
FILE *file = NULL;
reg_key_name_buf = HeapAlloc(GetProcessHeap(), 0,
reg_key_name_len * sizeof(*reg_key_name_buf));
val_name_buf = HeapAlloc(GetProcessHeap(), 0,
val_name_len * sizeof(*val_name_buf));
val_buf = HeapAlloc(GetProcessHeap(), 0, val_size);
CHECK_ENOUGH_MEMORY(reg_key_name_buf && val_name_buf && val_buf);
if (reg_key_name && reg_key_name[0]) {
HKEY reg_key_class;
CHAR *branch_name;
HKEY key;
REGPROC_resize_char_buffer(&reg_key_name_buf, &reg_key_name_len,
strlen(reg_key_name));
strcpy(reg_key_name_buf, reg_key_name);
/* open the specified key */
if (!parseKeyName(reg_key_name, &reg_key_class, &branch_name)) {
fprintf(stderr,"%s: Incorrect registry class specification in '%s'\n",
getAppName(), reg_key_name);
exit(1);
}
if (!branch_name[0]) {
/* no branch - registry class is specified */
file = REGPROC_open_export_file(file_name);
export_hkey(file, reg_key_class,
&reg_key_name_buf, &reg_key_name_len,
&val_name_buf, &val_name_len,
&val_buf, &val_size);
} else if (RegOpenKey(reg_key_class, branch_name, &key) == ERROR_SUCCESS) {
file = REGPROC_open_export_file(file_name);
export_hkey(file, key,
&reg_key_name_buf, &reg_key_name_len,
&val_name_buf, &val_name_len,
&val_buf, &val_size);
RegCloseKey(key);
} else {
fprintf(stderr,"%s: Can't export. Registry key '%s' does not exist!\n",
getAppName(), reg_key_name);
REGPROC_print_error();
}
} else {
unsigned int i;
/* export all registry classes */
file = REGPROC_open_export_file(file_name);
for (i = 0; i < REG_CLASS_NUMBER; i++) {
/* do not export HKEY_CLASSES_ROOT */
if (reg_class_keys[i] != HKEY_CLASSES_ROOT &&
reg_class_keys[i] != HKEY_CURRENT_USER &&
reg_class_keys[i] != HKEY_CURRENT_CONFIG &&
reg_class_keys[i] != HKEY_DYN_DATA) {
strcpy(reg_key_name_buf, reg_class_names[i]);
export_hkey(file, reg_class_keys[i],
&reg_key_name_buf, &reg_key_name_len,
&val_name_buf, &val_name_len,
&val_buf, &val_size);
}
}
}
if (file) {
fclose(file);
}
HeapFree(GetProcessHeap(), 0, reg_key_name);
HeapFree(GetProcessHeap(), 0, val_buf);
return TRUE;
}
/******************************************************************************
* Reads contents of the specified file into the registry.
*/
BOOL import_registry_file(LPTSTR filename)
{
FILE* reg_file = fopen(filename, "r");
if (reg_file) {
processRegLines(reg_file);
return TRUE;
}
return FALSE;
}
/******************************************************************************
* Recursive function which removes the registry key with all subkeys.
*/
static void delete_branch(HKEY key,
CHAR **reg_key_name_buf, DWORD *reg_key_name_len)
{
HKEY branch_key;
DWORD max_sub_key_len;
DWORD subkeys;
DWORD curr_len;
LONG ret;
long int i;
if (RegOpenKey(key, *reg_key_name_buf, &branch_key) != ERROR_SUCCESS) {
REGPROC_print_error();
}
/* get size information and resize the buffers if necessary */
if (RegQueryInfoKey(branch_key, NULL, NULL, NULL,
&subkeys, &max_sub_key_len,
NULL, NULL, NULL, NULL, NULL, NULL
) != ERROR_SUCCESS) {
REGPROC_print_error();
}
curr_len = strlen(*reg_key_name_buf);
REGPROC_resize_char_buffer(reg_key_name_buf, reg_key_name_len,
max_sub_key_len + curr_len + 1);
(*reg_key_name_buf)[curr_len] = '\\';
for (i = subkeys - 1; i >= 0; i--) {
DWORD buf_len = *reg_key_name_len - curr_len;
ret = RegEnumKeyEx(branch_key, i, *reg_key_name_buf + curr_len + 1,
&buf_len, NULL, NULL, NULL, NULL);
if (ret != ERROR_SUCCESS &&
ret != ERROR_MORE_DATA &&
ret != ERROR_NO_MORE_ITEMS) {
REGPROC_print_error();
} else {
delete_branch(key, reg_key_name_buf, reg_key_name_len);
}
}
(*reg_key_name_buf)[curr_len] = '\0';
RegCloseKey(branch_key);
RegDeleteKey(key, *reg_key_name_buf);
}
/******************************************************************************
* Removes the registry key with all subkeys. Parses full key name.
*
* Parameters:
* reg_key_name - full name of registry branch to delete. Ignored if is NULL,
* empty, points to register key class, does not exist.
*/
void delete_registry_key(CHAR *reg_key_name)
{
CHAR *key_name;
HKEY key_class;
HKEY branch_key;
if (!reg_key_name || !reg_key_name[0])
return;
if (!parseKeyName(reg_key_name, &key_class, &key_name)) {
fprintf(stderr,"%s: Incorrect registry class specification in '%s'\n",
getAppName(), reg_key_name);
exit(1);
}
if (!*key_name) {
fprintf(stderr,"%s: Can't delete registry class '%s'\n",
getAppName(), reg_key_name);
exit(1);
}
/* open the specified key to make sure it exists */
if (RegOpenKey(key_class, key_name, &branch_key) == ERROR_SUCCESS) {
CHAR *branch_name;
DWORD branch_name_len;
RegCloseKey(branch_key);
/* Copy the key name to a new buffer that delete_branch() can
* reallocate as needed
*/
branch_name_len = strlen(key_name);
branch_name = HeapAlloc(GetProcessHeap(), 0, branch_name_len+1);
CHECK_ENOUGH_MEMORY(branch_name);
strcpy(branch_name, key_name);
delete_branch(key_class, &branch_name, &branch_name_len);
HeapFree(GetProcessHeap(), 0, branch_name);
}
}
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