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Sweden-Number/programs/regedit/regproc.c

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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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
/* Delimiters used to parse the "value" to query queryValue*/
#define QUERY_VALUE_MAX_ARGS 1
/* maximal number of characters in hexadecimal data line,
not including '\' character */
#define REG_FILE_HEX_LINE_LEN 76
/* Globals used by the api setValue, queryValue */
static LPSTR currentKeyName = NULL;
static HKEY currentKeyClass = 0;
static HKEY currentKeyHandle = 0;
static BOOL bTheKeyIsOpen = FALSE;
static CHAR *app_name = "UNKNOWN";
static CHAR *reg_class_names[] = {
"HKEY_LOCAL_MACHINE", "HKEY_USERS", "HKEY_CLASSES_ROOT",
"HKEY_CURRENT_CONFIG", "HKEY_CURRENT_USER"
};
#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
};
/* 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)) \
{ \
printf("%s: file %s, line %d: Not enough memory", \
getAppName(), __FILE__, __LINE__); \
exit(NOT_ENOUGH_MEMORY); \
}
/******************************************************************************
* This is a replacement for strsep which is not portable (missing on Solaris).
*/
#if 0
/* DISABLED */
char* getToken(char** str, const char* delims)
{
char* token;
if (*str==NULL) {
/* No more tokens */
return NULL;
}
token=*str;
while (**str!='\0') {
if (strchr(delims,**str)!=NULL) {
**str='\0';
(*str)++;
return token;
}
(*str)++;
}
/* There is no other token */
*str=NULL;
return token;
}
#endif
/******************************************************************************
* Copies file name from command line string to the buffer.
* Rewinds the command line string pointer to the next non-spece character
* after the file name.
* Buffer contains an empty string if no filename was found;
*
* params:
* command_line - command line current position pointer
* where *s[0] is the first symbol of the file name.
* file_name - buffer to write the file name to.
*/
void get_file_name(CHAR **command_line, CHAR *file_name)
{
CHAR *s = *command_line;
int pos = 0; /* position of pointer "s" in *command_line */
file_name[0] = 0;
if (!s[0])
{
return;
}
if (s[0] == '"')
{
s++;
(*command_line)++;
while(s[0] != '"')
{
if (!s[0])
{
printf("%s: Unexpected end of file name!\n", getAppName());
exit(1);
}
s++;
pos++;
}
} else {
while(s[0] && !isspace(s[0]))
{
s++;
pos++;
}
}
memcpy(file_name, *command_line, pos * sizeof((*command_line)[0]));
/* remove the last backslash */
if (file_name[pos - 1] == '\\')
{
file_name[pos - 1] = '\0';
} else {
file_name[pos] = '\0';
}
if (s[0])
{
s++;
pos++;
}
while(s[0] && isspace(s[0]))
{
s++;
pos++;
}
(*command_line) += pos;
}
/******************************************************************************
* Converts a hex representation of a DWORD into a DWORD.
*/
DWORD convertHexToDWord(char *str, BYTE *buf)
{
DWORD dw;
char xbuf[9];
memcpy(xbuf,str,8);
xbuf[8]='\0';
sscanf(xbuf,"%08lx",&dw);
memcpy(buf,&dw,sizeof(DWORD));
return sizeof(DWORD);
}
/******************************************************************************
* Converts a hex buffer into a hex comma separated values
*/
char* convertHexToHexCSV(BYTE *buf, ULONG bufLen)
{
char* str;
char* ptrStr;
BYTE* ptrBuf;
ULONG current = 0;
str = HeapAlloc(GetProcessHeap(), 0, (bufLen+1)*2);
memset(str, 0, (bufLen+1)*2);
ptrStr = str; /* Pointer to result */
ptrBuf = buf; /* Pointer to current */
while (current < bufLen)
{
BYTE bCur = ptrBuf[current++];
char res[3];
sprintf(res, "%02x", (unsigned int)*&bCur);
strcat(str, res);
strcat(str, ",");
}
/* Get rid of the last comma */
str[strlen(str)-1] = '\0';
return str;
}
/******************************************************************************
* Converts a hex buffer into a DWORD string
*/
char* convertHexToDWORDStr(BYTE *buf, ULONG bufLen)
{
char* str;
DWORD dw;
if ( bufLen != sizeof(DWORD) ) return NULL;
str = HeapAlloc(GetProcessHeap(), 0, (bufLen*2)+1);
memcpy(&dw,buf,sizeof(DWORD));
sprintf(str, "%08lx", dw);
/* Get rid of the last comma */
return str;
}
/******************************************************************************
* Converts a hex comma separated values list into a hex list.
* The Hex input string must be in exactly the correct form.
*/
DWORD convertHexCSVToHex(char *str, BYTE *buf, ULONG bufLen)
{
char *s = str; /* Pointer to current */
char *b = buf; /* Pointer to result */
ULONG strLen = strlen(str);
ULONG strPos = 0;
DWORD byteCount = 0;
memset(buf, 0, bufLen);
/*
* warn the user if we are here with a string longer than 2 bytes that does
* not contains ",". It is more likely because the data is invalid.
*/
if ( ( strLen > 2) && ( strchr(str, ',') == NULL) )
printf("%s: WARNING converting CSV hex stream with no comma, "
"input data seems invalid.\n", getAppName());
if (strLen > 3*bufLen)
printf ("%s: ERROR converting CSV hex stream. Too long\n", getAppName());
while (strPos < strLen)
{
char xbuf[3];
UINT wc;
memcpy(xbuf,s,2); xbuf[2]='\0';
sscanf(xbuf,"%02x",&wc);
if (byteCount < bufLen)
*b++ =(unsigned char)wc;
s+=3;
strPos+=3;
byteCount++;
}
return byteCount;
}
/******************************************************************************
* 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'
*/
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;
}
return (**lpValue=='\0'?REG_SZ:REG_NONE);
}
/******************************************************************************
* Returns an allocated buffer with a cleaned copy (removed the surrounding
* dbl quotes) of the passed value.
*/
LPSTR getArg( LPSTR arg)
{
LPSTR tmp = NULL;
ULONG len;
if (arg == NULL)
return NULL;
/*
* Get rid of surrounding quotes
*/
len = strlen(arg);
if( arg[len-1] == '\"' ) arg[len-1] = '\0';
if( arg[0] == '\"' ) arg++;
tmp = HeapAlloc(GetProcessHeap(), 0, strlen(arg)+1);
strcpy(tmp, arg);
return tmp;
}
/******************************************************************************
* Replaces escape sequences with the characters.
*/
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:
printf("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';
}
/******************************************************************************
* 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
*/
HRESULT setValue(LPSTR val_name, LPSTR val_data)
{
HRESULT hRes;
DWORD dwDataType, dwParseType;
LPBYTE lpbData;
BYTE convert[KEY_MAX_LEN];
BYTE *bBigBuffer = 0;
DWORD dwLen;
if ( (val_name == NULL) || (val_data == NULL) )
return ERROR_INVALID_PARAMETER;
/* Get the data type stored into the value field */
dwDataType = getDataType(&val_data, &dwParseType);
if ( dwParseType == REG_SZ) /* no conversion for string */
{
dwLen = strlen(val_data);
if (dwLen>0 && val_data[dwLen-1]=='"')
{
dwLen--;
val_data[dwLen]='\0';
}
dwLen++;
REGPROC_unescape_string(val_data);
lpbData = val_data;
}
else if (dwParseType == REG_DWORD) /* Convert the dword types */
{
dwLen = convertHexToDWord(val_data, convert);
lpbData = convert;
}
else /* Convert the hexadecimal types */
{
int b_len = strlen (val_data)+2/3;
if (b_len > KEY_MAX_LEN)
{
bBigBuffer = HeapAlloc (GetProcessHeap(), 0, b_len);
CHECK_ENOUGH_MEMORY(bBigBuffer);
dwLen = convertHexCSVToHex(val_data, bBigBuffer, b_len);
lpbData = bBigBuffer;
}
else
{
dwLen = convertHexCSVToHex(val_data, convert, KEY_MAX_LEN);
lpbData = convert;
}
}
hRes = RegSetValueEx(
currentKeyHandle,
val_name,
0, /* Reserved */
dwDataType,
lpbData,
dwLen);
if (bBigBuffer)
HeapFree (GetProcessHeap(), 0, bBigBuffer);
return hRes;
}
/******************************************************************************
* Open the key
*/
HRESULT openKey( LPSTR stdInput)
{
DWORD dwDisp;
HRESULT hRes;
/* Sanity checks */
if (stdInput == NULL)
return ERROR_INVALID_PARAMETER;
/* Get the registry class */
currentKeyClass = getRegClass(stdInput); /* Sets global variable */
if (currentKeyClass == (HKEY)ERROR_INVALID_PARAMETER)
return (HRESULT)ERROR_INVALID_PARAMETER;
/* Get the key name */
currentKeyName = getRegKeyName(stdInput); /* Sets global variable */
if (currentKeyName == NULL)
return ERROR_INVALID_PARAMETER;
hRes = RegCreateKeyEx(
currentKeyClass, /* Class */
currentKeyName, /* 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 (hRes == ERROR_SUCCESS)
bTheKeyIsOpen = TRUE;
return hRes;
}
/******************************************************************************
* Extracts from [HKEY\some\key\path] or HKEY\some\key\path types of line
* the key name (what starts after the first '\')
*/
LPSTR getRegKeyName(LPSTR lpLine)
{
LPSTR keyNameBeg;
char lpLineCopy[KEY_MAX_LEN];
if (lpLine == NULL)
return NULL;
strcpy(lpLineCopy, lpLine);
keyNameBeg = strchr(lpLineCopy, '\\'); /* The key name start by '\' */
if (keyNameBeg)
{
LPSTR keyNameEnd;
keyNameBeg++; /* is not part of the name */
keyNameEnd = strchr(lpLineCopy, ']');
if (keyNameEnd)
{
*keyNameEnd = '\0'; /* remove ']' from the key name */
}
} else {
keyNameBeg = lpLineCopy + strlen(lpLineCopy); /* branch - empty string */
}
currentKeyName = HeapAlloc(GetProcessHeap(), 0, strlen(keyNameBeg) + 1);
CHECK_ENOUGH_MEMORY(currentKeyName);
strcpy(currentKeyName, keyNameBeg);
return currentKeyName;
}
/******************************************************************************
* Extracts from [HKEY\some\key\path] or HKEY\some\key\path types of line
* the key class (what ends before the first '\')
*/
HKEY getRegClass(LPSTR lpClass)
{
LPSTR classNameEnd;
LPSTR classNameBeg;
int i;
char lpClassCopy[KEY_MAX_LEN];
if (lpClass == NULL)
return (HKEY)ERROR_INVALID_PARAMETER;
strncpy(lpClassCopy, lpClass, KEY_MAX_LEN);
classNameEnd = strchr(lpClassCopy, '\\'); /* The class name ends by '\' */
if (!classNameEnd) /* or the whole string */
{
classNameEnd = lpClassCopy + strlen(lpClassCopy);
if (classNameEnd[-1] == ']')
{
classNameEnd--;
}
}
*classNameEnd = '\0'; /* Isolate the class name */
if (lpClassCopy[0] == '[')
{
classNameBeg = lpClassCopy + 1;
} else {
classNameBeg = lpClassCopy;
}
for (i = 0; i < REG_CLASS_NUMBER; i++)
{
if (!strcmp(classNameBeg, reg_class_names[i]))
{
return reg_class_keys[i];
}
}
return (HKEY)ERROR_INVALID_PARAMETER;
}
/******************************************************************************
* Close the currently opened key.
*/
void closeKey()
{
RegCloseKey(currentKeyHandle);
HeapFree(GetProcessHeap(), 0, currentKeyName); /* Allocated by getKeyName */
bTheKeyIsOpen = FALSE;
currentKeyName = NULL;
currentKeyClass = 0;
currentKeyHandle = 0;
}
/******************************************************************************
* This function is the main entry point to the setValue type of action. It
* receives the currently read line and dispatch the work depending on the
* context.
*/
void doSetValue(LPSTR stdInput)
{
/*
* We encoutered the end of the file, make sure we
* close the opened key and exit
*/
if (stdInput == NULL)
{
if (bTheKeyIsOpen != FALSE)
closeKey();
return;
}
if ( stdInput[0] == '[') /* We are reading a new key */
{
if ( bTheKeyIsOpen != FALSE )
closeKey(); /* Close the previous key before */
if ( openKey(stdInput) != ERROR_SUCCESS )
printf ("%s: doSetValue failed to open key %s\n", getAppName(), stdInput);
}
else if( ( bTheKeyIsOpen ) &&
(( 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 */
if ( bTheKeyIsOpen ) /* be reading a blank line which */
closeKey(); /* indicate end of this key processing */
}
}
/******************************************************************************
* This funtion is the main entry point to the queryValue type of action. It
* receives the currently read line and dispatch the work depending on the
* context.
*/
void doQueryValue(LPSTR stdInput) {
/*
* We encoutered the end of the file, make sure we
* close the opened key and exit
*/
if (stdInput == NULL)
{
if (bTheKeyIsOpen != FALSE)
closeKey();
return;
}
if ( stdInput[0] == '[') /* We are reading a new key */
{
if ( bTheKeyIsOpen != FALSE )
closeKey(); /* Close the previous key before */
if ( openKey(stdInput) != ERROR_SUCCESS )
printf ("%s: doSetValue failed to open key %s\n", getAppName(), stdInput);
}
else if( ( bTheKeyIsOpen ) &&
(( stdInput[0] == '@') || /* reading a default @=data pair */
( stdInput[0] == '\"'))) /* reading a new value=data pair */
{
processQueryValue(stdInput);
}
else /* since we are assuming that the */
{ /* file format is valid we must */
if ( bTheKeyIsOpen ) /* be reading a blank line which */
closeKey(); /* indicate end of this key processing */
}
}
/******************************************************************************
* This funtion is the main entry point to the deletetValue type of action. It
* receives the currently read line and dispatch the work depending on the
* context.
*/
void doDeleteValue(LPSTR line) {
printf ("%s: deleteValue not yet implemented\n", getAppName());
}
/******************************************************************************
* This funtion is the main entry point to the deleteKey type of action. It
* receives the currently read line and dispatch the work depending on the
* context.
*/
void doDeleteKey(LPSTR line) {
printf ("%s: deleteKey not yet implemented\n", getAppName());
}
/******************************************************************************
* This funtion is the main entry point to the createKey type of action. It
* receives the currently read line and dispatch the work depending on the
* context.
*/
void doCreateKey(LPSTR line) {
printf ("%s: createKey not yet implemented\n", getAppName());
}
/******************************************************************************
* 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.
*/
void processSetValue(LPSTR line)
{
LPSTR val_name; /* registry value name */
LPSTR val_data; /* registry value data */
int line_idx = 0; /* current character under analysis */
HRESULT hRes = 0;
/* 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] = '\"';
printf("Warning! uncrecognized line:\n%s\n", line);
return;
}
}
else
{
printf("Warning! uncrecognized line:\n%s\n", line);
return;
}
line_idx++; /* skip the '=' character */
val_data = line + line_idx;
REGPROC_unescape_string(val_name);
hRes = setValue(val_name, val_data);
if ( hRes != ERROR_SUCCESS )
printf("%s: ERROR Key %s not created. Value: %s, Data: %s\n",
getAppName(),
currentKeyName,
val_name,
val_data);
}
/******************************************************************************
* This function is a wrapper for the queryValue function. It prepares the
* land and clean the area once completed.
*/
void processQueryValue(LPSTR cmdline)
{
printf("ERROR!!! - temporary disabled");
exit(1);
#if 0
LPSTR argv[QUERY_VALUE_MAX_ARGS];/* args storage */
LPSTR token = NULL; /* current token analized */
ULONG argCounter = 0; /* counter of args */
INT counter;
HRESULT hRes = 0;
LPSTR keyValue = NULL;
LPSTR lpsRes = NULL;
/*
* Init storage and parse the line
*/
for (counter=0; counter<QUERY_VALUE_MAX_ARGS; counter++)
argv[counter]=NULL;
while( (token = getToken(&cmdline, queryValueDelim[argCounter])) != NULL )
{
argv[argCounter++] = getArg(token);
if (argCounter == QUERY_VALUE_MAX_ARGS)
break; /* Stop processing args no matter what */
}
/* The value we look for is the first token on the line */
if ( argv[0] == NULL )
return; /* SHOULD NOT HAPPEN */
else
keyValue = argv[0];
if( (keyValue[0] == '@') && (strlen(keyValue) == 1) )
{
LONG lLen = KEY_MAX_LEN;
CHAR* lpsData=HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,KEY_MAX_LEN);
/*
* We need to query the key default value
*/
hRes = RegQueryValue(
currentKeyHandle,
currentKeyName,
(LPBYTE)lpsData,
&lLen);
if (hRes==ERROR_MORE_DATA) {
lpsData=HeapReAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,lpsData,lLen);
hRes = RegQueryValue(currentKeyHandle,currentKeyName,(LPBYTE)lpsData,&lLen);
}
if (hRes == ERROR_SUCCESS)
{
lpsRes = HeapAlloc( GetProcessHeap(), 0, lLen);
strncpy(lpsRes, lpsData, lLen);
lpsRes[lLen-1]='\0';
}
}
else
{
DWORD dwLen = KEY_MAX_LEN;
BYTE* lpbData=HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,KEY_MAX_LEN);
DWORD dwType;
/*
* We need to query a specific value for the key
*/
hRes = RegQueryValueEx(
currentKeyHandle,
keyValue,
0,
&dwType,
(LPBYTE)lpbData,
&dwLen);
if (hRes==ERROR_MORE_DATA) {
lpbData=HeapReAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,lpbData,dwLen);
hRes = RegQueryValueEx(currentKeyHandle,keyValue,NULL,&dwType,(LPBYTE)lpbData,&dwLen);
}
if (hRes == ERROR_SUCCESS)
{
/*
* Convert the returned data to a displayable format
*/
switch ( dwType )
{
case REG_SZ:
case REG_EXPAND_SZ:
{
lpsRes = HeapAlloc( GetProcessHeap(), 0, dwLen);
strncpy(lpsRes, lpbData, dwLen);
lpsRes[dwLen-1]='\0';
break;
}
case REG_DWORD:
{
lpsRes = convertHexToDWORDStr(lpbData, dwLen);
break;
}
default:
{
lpsRes = convertHexToHexCSV(lpbData, dwLen);
break;
}
}
}
HeapFree(GetProcessHeap(), 0, lpbData);
}
if ( hRes == ERROR_SUCCESS )
printf(
"%s: Value \"%s\" = \"%s\" in key [%s]\n",
getAppName(),
keyValue,
lpsRes,
currentKeyName);
else
printf("%s: ERROR Value \"%s\" not found. for key \"%s\"\n",
getAppName(),
keyValue,
currentKeyName);
/*
* Do some cleanup
*/
for (counter=0; counter<argCounter; counter++)
if (argv[counter] != NULL)
HeapFree(GetProcessHeap(), 0, argv[counter]);
if (lpsRes != NULL)
HeapFree(GetProcessHeap(), 0, lpsRes);
#endif
}
/******************************************************************************
* Calls command for each line of a registry file.
* Correctly processes comments (in # form), line continuation.
*
* Parameters:
* in - input stream to read from
* command - command to be called for each line
*/
void processRegLines(FILE *in, CommandAPI command)
{
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 != ' ')
printf ("%s: ERROR - invalid continuation.\n", getAppName());
continue;
}
break; /* That is the full virtual line */
}
command(line);
}
command(NULL);
HeapFree(GetProcessHeap(), 0, line);
}
/******************************************************************************
* This funtion is the main entry point to the registerDLL action. It
* receives the currently read line, then loads and registers the requested DLLs
*/
void doRegisterDLL(LPSTR stdInput) {
HMODULE theLib = 0;
UINT retVal = 0;
/* Check for valid input */
if (stdInput == NULL)
return;
/* Load and register the library, then free it */
theLib = LoadLibrary(stdInput);
if (theLib)
{
FARPROC lpfnDLLRegProc = GetProcAddress(theLib, "DllRegisterServer");
if (lpfnDLLRegProc)
retVal = (*lpfnDLLRegProc)();
else
printf("%s: Couldn't find DllRegisterServer proc in '%s'.\n",
getAppName(), stdInput);
if (retVal != S_OK)
printf("%s: DLLRegisterServer error 0x%x in '%s'.\n",
getAppName(), retVal, stdInput);
FreeLibrary(theLib);
}
else
{
printf("%s: Could not load DLL '%s'.\n", getAppName(), stdInput);
}
}
/******************************************************************************
* This funtion is the main entry point to the unregisterDLL action. It
* receives the currently read line, then loads and unregisters the requested DLLs
*/
void doUnregisterDLL(LPSTR stdInput) {
HMODULE theLib = 0;
UINT retVal = 0;
/* Check for valid input */
if (stdInput == NULL)
return;
/* Load and unregister the library, then free it */
theLib = LoadLibrary(stdInput);
if (theLib)
{
FARPROC lpfnDLLRegProc = GetProcAddress(theLib, "DllUnregisterServer");
if (lpfnDLLRegProc)
retVal = (*lpfnDLLRegProc)();
else
printf("%s: Couldn't find DllUnregisterServer proc in '%s'.\n",
getAppName(), stdInput);
if (retVal != S_OK)
printf("%s: DLLUnregisterServer error 0x%x in '%s'.\n",
getAppName(), retVal, stdInput);
FreeLibrary(theLib);
}
else
{
printf("%s: Could not load DLL '%s'.\n", getAppName(), stdInput);
}
}
/****************************************************************************
* REGPROC_print_error
*
* Print the message for GetLastError
*/
void REGPROC_print_error() {
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) {
printf("%s: Cannot display message for error %ld, status %ld\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.
*/
void REGPROC_resize_char_buffer(CHAR **buffer, DWORD *len, DWORD required_len)
{
required_len++;
if (required_len > *len)
{
*len = required_len;
*buffer = HeapReAlloc(GetProcessHeap(), 0, *buffer,
*len * sizeof(**buffer));
CHECK_ENOUGH_MEMORY(*buffer);
}
}
/******************************************************************************
* Prints string str to file
*/
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.
*/
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;
*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, *val_buf);
fputs("\"\n", file);
break;
case REG_DWORD:
fprintf(file, "dword:%08lx\n", *((DWORD *)*val_buf));
break;
default:
printf("%s: warning - unsupported registry format '%ld', "
"treat as binary\n",
getAppName(), value_type);
printf("key name: \"%s\"\n", *reg_key_name_buf);
printf("value name:\"%s\"\n\n", *val_name_buf);
/* falls through */
case REG_MULTI_SZ:
/* falls through */
case REG_BINARY:
{
DWORD i1;
CHAR *hex_prefix;
CHAR buf[20];
int cur_pos;
if (value_type == REG_BINARY)
{
hex_prefix = "hex:";
} else {
hex_prefix = buf;
sprintf(buf, "hex(%ld):", 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.
*/
FILE *REGPROC_open_export_file(CHAR *file_name)
{
FILE *file = fopen(file_name, "w");
if (!file)
{
perror("");
printf("%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.
*/
void export_registry_key(CHAR *file_name, CHAR *reg_key_name)
{
HKEY reg_key_class;
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])
{
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 */
reg_key_class = getRegClass(reg_key_name);
if (reg_key_class == (HKEY)ERROR_INVALID_PARAMETER)
{
printf("%s: Incorrect registry class specification in '%s'\n",
getAppName(), reg_key_name);
exit(1);
}
branch_name = getRegKeyName(reg_key_name);
CHECK_ENOUGH_MEMORY(branch_name);
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 {
printf("%s: Can't export. Registry key '%s' does not exist!\n",
getAppName(), reg_key_name);
REGPROC_print_error();
}
HeapFree(GetProcessHeap(), 0, branch_name);
} else {
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)
{
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);
}
/******************************************************************************
* Recursive function which removes the registry key with all subkeys.
*/
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 *branch_name;
DWORD branch_name_len;
HKEY reg_key_class;
HKEY branch_key;
if (!reg_key_name || !reg_key_name[0])
return;
/* open the specified key */
reg_key_class = getRegClass(reg_key_name);
if (reg_key_class == (HKEY)ERROR_INVALID_PARAMETER)
{
printf("%s: Incorrect registry class specification in '%s'\n",
getAppName(), reg_key_name);
exit(1);
}
branch_name = getRegKeyName(reg_key_name);
CHECK_ENOUGH_MEMORY(branch_name);
branch_name_len = strlen(branch_name);
if (!branch_name[0])
{
printf("%s: Can't delete registry class '%s'\n",
getAppName(), reg_key_name);
exit(1);
}
if (RegOpenKey(reg_key_class, branch_name, &branch_key) == ERROR_SUCCESS)
{
/* check whether the key exists */
RegCloseKey(branch_key);
delete_branch(reg_key_class, &branch_name, &branch_name_len);
}
HeapFree(GetProcessHeap(), 0, branch_name);
}
/******************************************************************************
* Sets the application name. Then application name is used in the error
* reporting.
*/
void setAppName(CHAR *name)
{
app_name = name;
}
CHAR *getAppName()
{
return app_name;
}
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