programs/regedit/regproc.c

   1 /*
   2  * Registry processing routines. Routines, common for registry
   3  * processing frontends.
   4  *
   5  * Copyright 1999 Sylvain St-Germain
   6  * Copyright 2002 Andriy Palamarchuk
   7  * Copyright 2008 Alexander N. Sørnes <alex@thehandofagony.com>
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  22  */
  23
  24 #include <limits.h>
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <fcntl.h>
  28 #include <io.h>
  29 #include <windows.h>
  30 #include <winnt.h>
  31 #include <winreg.h>
  32 #include <assert.h>
  33 #include <wine/unicode.h>
  34 #include "regproc.h"
  35
  36 #define REG_VAL_BUF_SIZE        4096
  37
  38 /* maximal number of characters in hexadecimal data line,
  39  * including the indentation, but not including the '\' character
  40  */
  41 #define REG_FILE_HEX_LINE_LEN   (2 + 25 * 3)
  42
  43 extern const WCHAR* reg_class_namesW[];
  44
  45 static HKEY reg_class_keys[] = {
  46             HKEY_LOCAL_MACHINE, HKEY_USERS, HKEY_CLASSES_ROOT,
  47             HKEY_CURRENT_CONFIG, HKEY_CURRENT_USER, HKEY_DYN_DATA
  48         };
  49
  50 #define REG_CLASS_NUMBER (sizeof(reg_class_keys) / sizeof(reg_class_keys[0]))
  51
  52 /* return values */
  53 #define NOT_ENOUGH_MEMORY     1
  54 #define IO_ERROR              2
  55
  56 /* processing macros */
  57
  58 /* common check of memory allocation results */
  59 #define CHECK_ENOUGH_MEMORY(p) \
  60 if (!(p)) \
  61 { \
  62     fprintf(stderr,"%s: file %s, line %d: Not enough memory\n", \
  63             getAppName(), __FILE__, __LINE__); \
  64     exit(NOT_ENOUGH_MEMORY); \
  65 }
  66
  67 /******************************************************************************
  68  * Allocates memory and converts input from multibyte to wide chars
  69  * Returned string must be freed by the caller
  70  */
  71 WCHAR* GetWideString(const char* strA)
  72 {
  73     if(strA)
  74     {
  75         WCHAR* strW;
  76         int len = MultiByteToWideChar(CP_ACP, 0, strA, -1, NULL, 0);
  77
  78         strW = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
  79         CHECK_ENOUGH_MEMORY(strW);
  80         MultiByteToWideChar(CP_ACP, 0, strA, -1, strW, len);
  81         return strW;
  82     }
  83     return NULL;
  84 }
  85
  86 /******************************************************************************
  87  * Allocates memory and converts input from multibyte to wide chars
  88  * Returned string must be freed by the caller
  89  */
  90 static WCHAR* GetWideStringN(const char* strA, int chars, DWORD *len)
  91 {
  92     if(strA)
  93     {
  94         WCHAR* strW;
  95         *len = MultiByteToWideChar(CP_ACP, 0, strA, chars, NULL, 0);
  96
  97         strW = HeapAlloc(GetProcessHeap(), 0, *len * sizeof(WCHAR));
  98         CHECK_ENOUGH_MEMORY(strW);
  99         MultiByteToWideChar(CP_ACP, 0, strA, chars, strW, *len);
 100         return strW;
 101     }
 102     *len = 0;
 103     return NULL;
 104 }
 105
 106 /******************************************************************************
 107  * Allocates memory and converts input from wide chars to multibyte
 108  * Returned string must be freed by the caller
 109  */
 110 char* GetMultiByteString(const WCHAR* strW)
 111 {
 112     if(strW)
 113     {
 114         char* strA;
 115         int len = WideCharToMultiByte(CP_ACP, 0, strW, -1, NULL, 0, NULL, NULL);
 116
 117         strA = HeapAlloc(GetProcessHeap(), 0, len);
 118         CHECK_ENOUGH_MEMORY(strA);
 119         WideCharToMultiByte(CP_ACP, 0, strW, -1, strA, len, NULL, NULL);
 120         return strA;
 121     }
 122     return NULL;
 123 }
 124
 125 /******************************************************************************
 126  * Allocates memory and converts input from wide chars to multibyte
 127  * Returned string must be freed by the caller
 128  */
 129 static char* GetMultiByteStringN(const WCHAR* strW, int chars, DWORD* len)
 130 {
 131     if(strW)
 132     {
 133         char* strA;
 134         *len = WideCharToMultiByte(CP_ACP, 0, strW, chars, NULL, 0, NULL, NULL);
 135
 136         strA = HeapAlloc(GetProcessHeap(), 0, *len);
 137         CHECK_ENOUGH_MEMORY(strA);
 138         WideCharToMultiByte(CP_ACP, 0, strW, chars, strA, *len, NULL, NULL);
 139         return strA;
 140     }
 141     *len = 0;
 142     return NULL;
 143 }
 144
 145 /******************************************************************************
 146  * Converts a hex representation of a DWORD into a DWORD.
 147  */
 148 static BOOL convertHexToDWord(WCHAR* str, DWORD *dw)
 149 {
 150     char buf[9];
 151     char dummy;
 152
 153     WideCharToMultiByte(CP_ACP, 0, str, -1, buf, 9, NULL, NULL);
 154     if (lstrlenW(str) > 8 || sscanf(buf, "%x%c", dw, &dummy) != 1) {
 155         fprintf(stderr,"%s: ERROR, invalid hex value\n", getAppName());
 156         return FALSE;
 157     }
 158     return TRUE;
 159 }
 160
 161 /******************************************************************************
 162  * Converts a hex comma separated values list into a binary string.
 163  */
 164 static BYTE* convertHexCSVToHex(WCHAR *str, DWORD *size)
 165 {
 166     WCHAR *s;
 167     BYTE *d, *data;
 168
 169     /* The worst case is 1 digit + 1 comma per byte */
 170     *size=(lstrlenW(str)+1)/2;
 171     data=HeapAlloc(GetProcessHeap(), 0, *size);
 172     CHECK_ENOUGH_MEMORY(data);
 173
 174     s = str;
 175     d = data;
 176     *size=0;
 177     while (*s != '\0') {
 178         UINT wc;
 179         WCHAR *end;
 180
 181         wc = strtoulW(s,&end,16);
 182         if (end == s || wc > 0xff || (*end && *end != ',')) {
 183             char* strA = GetMultiByteString(s);
 184             fprintf(stderr,"%s: ERROR converting CSV hex stream. Invalid value at '%s'\n",
 185                     getAppName(), strA);
 186             HeapFree(GetProcessHeap(), 0, data);
 187             HeapFree(GetProcessHeap(), 0, strA);
 188             return NULL;
 189         }
 190         *d++ =(BYTE)wc;
 191         (*size)++;
 192         if (*end) end++;
 193         s = end;
 194     }
 195
 196     return data;
 197 }
 198
 199 /******************************************************************************
 200  * This function returns the HKEY associated with the data type encoded in the
 201  * value.  It modifies the input parameter (key value) in order to skip this
 202  * "now useless" data type information.
 203  *
 204  * Note: Updated based on the algorithm used in 'server/registry.c'
 205  */
 206 static DWORD getDataType(LPWSTR *lpValue, DWORD* parse_type)
 207 {
 208     struct data_type { const WCHAR *tag; int len; int type; int parse_type; };
 209
 210     static const WCHAR quote[] = {'"'};
 211     static const WCHAR str[] = {'s','t','r',':','"'};
 212     static const WCHAR str2[] = {'s','t','r','(','2',')',':','"'};
 213     static const WCHAR hex[] = {'h','e','x',':'};
 214     static const WCHAR dword[] = {'d','w','o','r','d',':'};
 215     static const WCHAR hexp[] = {'h','e','x','('};
 216
 217     static const struct data_type data_types[] = {                   /* actual type */  /* type to assume for parsing */
 218                 { quote,       1,   REG_SZ,              REG_SZ },
 219                 { str,         5,   REG_SZ,              REG_SZ },
 220                 { str2,        8,   REG_EXPAND_SZ,       REG_SZ },
 221                 { hex,         4,   REG_BINARY,          REG_BINARY },
 222                 { dword,       6,   REG_DWORD,           REG_DWORD },
 223                 { hexp,        4,   -1,                  REG_BINARY },
 224                 { NULL,        0,    0,                  0 }
 225             };
 226
 227     const struct data_type *ptr;
 228     int type;
 229
 230     for (ptr = data_types; ptr->tag; ptr++) {
 231         if (strncmpW( ptr->tag, *lpValue, ptr->len ))
 232             continue;
 233
 234         /* Found! */
 235         *parse_type = ptr->parse_type;
 236         type=ptr->type;
 237         *lpValue+=ptr->len;
 238         if (type == -1) {
 239             WCHAR* end;
 240
 241             /* "hex(xx):" is special */
 242             type = (int)strtoulW( *lpValue , &end, 16 );
 243             if (**lpValue=='\0' || *end!=')' || *(end+1)!=':') {
 244                 type=REG_NONE;
 245             } else {
 246                 *lpValue = end + 2;
 247             }
 248         }
 249         return type;
 250     }
 251     *parse_type=REG_NONE;
 252     return REG_NONE;
 253 }
 254
 255 /******************************************************************************
 256  * Replaces escape sequences with the characters.
 257  */
 258 static int REGPROC_unescape_string(WCHAR* str)
 259 {
 260     int str_idx = 0;            /* current character under analysis */
 261     int val_idx = 0;            /* the last character of the unescaped string */
 262     int len = lstrlenW(str);
 263     for (str_idx = 0; str_idx < len; str_idx++, val_idx++) {
 264         if (str[str_idx] == '\\') {
 265             str_idx++;
 266             switch (str[str_idx]) {
 267             case 'n':
 268                 str[val_idx] = '\n';
 269                 break;
 270             case 'r':
 271                 str[val_idx] = '\r';
 272                 break;
 273             case '0':
 274                 str[val_idx] = '\0';
 275                 break;
 276             case '\\':
 277             case '"':
 278                 str[val_idx] = str[str_idx];
 279                 break;
 280             default:
 281                 fprintf(stderr,"Warning! Unrecognized escape sequence: \\%c'\n",
 282                         str[str_idx]);
 283                 str[val_idx] = str[str_idx];
 284                 break;
 285             }
 286         } else {
 287             str[val_idx] = str[str_idx];
 288         }
 289     }
 290     str[val_idx] = '\0';
 291     return val_idx;
 292 }
 293
 294 static BOOL parseKeyName(LPWSTR lpKeyName, HKEY *hKey, LPWSTR *lpKeyPath)
 295 {
 296     WCHAR* lpSlash = NULL;
 297     unsigned int i, len;
 298
 299     if (lpKeyName == NULL)
 300         return FALSE;
 301
 302     for(i = 0; *(lpKeyName+i) != 0; i++)
 303     {
 304         if(*(lpKeyName+i) == '\\')
 305         {
 306             lpSlash = lpKeyName+i;
 307             break;
 308         }
 309     }
 310
 311     if (lpSlash)
 312     {
 313         len = lpSlash-lpKeyName;
 314     }
 315     else
 316     {
 317         len = lstrlenW(lpKeyName);
 318         lpSlash = lpKeyName+len;
 319     }
 320     *hKey = NULL;
 321
 322     for (i = 0; i < REG_CLASS_NUMBER; i++) {
 323         if (CompareStringW(LOCALE_USER_DEFAULT, 0, lpKeyName, len, reg_class_namesW[i], -1) == CSTR_EQUAL &&
 324             len == lstrlenW(reg_class_namesW[i])) {
 325             *hKey = reg_class_keys[i];
 326             break;
 327         }
 328     }
 329
 330     if (*hKey == NULL)
 331         return FALSE;
 332
 333
 334     if (*lpSlash != '\0')
 335         lpSlash++;
 336     *lpKeyPath = lpSlash;
 337     return TRUE;
 338 }
 339
 340 /* Globals used by the setValue() & co */
 341 static LPSTR currentKeyName;
 342 static HKEY  currentKeyHandle = NULL;
 343
 344 /******************************************************************************
 345  * Sets the value with name val_name to the data in val_data for the currently
 346  * opened key.
 347  *
 348  * Parameters:
 349  * val_name - name of the registry value
 350  * val_data - registry value data
 351  */
 352 static LONG setValue(WCHAR* val_name, WCHAR* val_data, BOOL is_unicode)
 353 {
 354     LONG res;
 355     DWORD  dwDataType, dwParseType;
 356     LPBYTE lpbData;
 357     DWORD  dwData, dwLen;
 358     WCHAR del[] = {'-',0};
 359
 360     if ( (val_name == NULL) || (val_data == NULL) )
 361         return ERROR_INVALID_PARAMETER;
 362
 363     if (lstrcmpW(val_data, del) == 0)
 364     {
 365         res=RegDeleteValueW(currentKeyHandle,val_name);
 366         return (res == ERROR_FILE_NOT_FOUND ? ERROR_SUCCESS : res);
 367     }
 368
 369     /* Get the data type stored into the value field */
 370     dwDataType = getDataType(&val_data, &dwParseType);
 371
 372     if (dwParseType == REG_SZ)          /* no conversion for string */
 373     {
 374         dwLen = REGPROC_unescape_string(val_data);
 375         if(!dwLen || val_data[dwLen-1] != '"')
 376             return ERROR_INVALID_DATA;
 377         val_data[dwLen-1] = '\0'; /* remove last quotes */
 378         lpbData = (BYTE*) val_data;
 379         dwLen = dwLen * sizeof(WCHAR); /* size is in bytes */
 380     }
 381     else if (dwParseType == REG_DWORD)  /* Convert the dword types */
 382     {
 383         if (!convertHexToDWord(val_data, &dwData))
 384             return ERROR_INVALID_DATA;
 385         lpbData = (BYTE*)&dwData;
 386         dwLen = sizeof(dwData);
 387     }
 388     else if (dwParseType == REG_BINARY) /* Convert the binary data */
 389     {
 390         lpbData = convertHexCSVToHex(val_data, &dwLen);
 391         if (!lpbData)
 392             return ERROR_INVALID_DATA;
 393
 394         if((dwDataType == REG_MULTI_SZ || dwDataType == REG_EXPAND_SZ) && !is_unicode)
 395         {
 396             LPBYTE tmp = lpbData;
 397             lpbData = (LPBYTE)GetWideStringN((char*)lpbData, dwLen, &dwLen);
 398             dwLen *= sizeof(WCHAR);
 399             HeapFree(GetProcessHeap(), 0, tmp);
 400         }
 401     }
 402     else                                /* unknown format */
 403     {
 404         fprintf(stderr,"%s: ERROR, unknown data format\n", getAppName());
 405         return ERROR_INVALID_DATA;
 406     }
 407
 408     res = RegSetValueExW(
 409                currentKeyHandle,
 410                val_name,
 411                0,                  /* Reserved */
 412                dwDataType,
 413                lpbData,
 414                dwLen);
 415     if (dwParseType == REG_BINARY)
 416         HeapFree(GetProcessHeap(), 0, lpbData);
 417     return res;
 418 }
 419
 420 /******************************************************************************
 421  * A helper function for processRegEntry() that opens the current key.
 422  * That key must be closed by calling closeKey().
 423  */
 424 static LONG openKeyW(WCHAR* stdInput)
 425 {
 426     HKEY keyClass;
 427     WCHAR* keyPath;
 428     DWORD dwDisp;
 429     LONG res;
 430
 431     /* Sanity checks */
 432     if (stdInput == NULL)
 433         return ERROR_INVALID_PARAMETER;
 434
 435     /* Get the registry class */
 436     if (!parseKeyName(stdInput, &keyClass, &keyPath))
 437         return ERROR_INVALID_PARAMETER;
 438
 439     res = RegCreateKeyExW(
 440                keyClass,                 /* Class     */
 441                keyPath,                  /* Sub Key   */
 442                0,                        /* MUST BE 0 */
 443                NULL,                     /* object type */
 444                REG_OPTION_NON_VOLATILE,  /* option, REG_OPTION_NON_VOLATILE ... */
 445                KEY_ALL_ACCESS,           /* access mask, KEY_ALL_ACCESS */
 446                NULL,                     /* security attribute */
 447                &currentKeyHandle,        /* result */
 448                &dwDisp);                 /* disposition, REG_CREATED_NEW_KEY or
 449                                                         REG_OPENED_EXISTING_KEY */
 450
 451     if (res == ERROR_SUCCESS)
 452         currentKeyName = GetMultiByteString(stdInput);
 453     else
 454         currentKeyHandle = NULL;
 455
 456     return res;
 457
 458 }
 459
 460 /******************************************************************************
 461  * Close the currently opened key.
 462  */
 463 static void closeKey(void)
 464 {
 465     if (currentKeyHandle)
 466     {
 467         HeapFree(GetProcessHeap(), 0, currentKeyName);
 468         RegCloseKey(currentKeyHandle);
 469         currentKeyHandle = NULL;
 470     }
 471 }
 472
 473 /******************************************************************************
 474  * This function is a wrapper for the setValue function.  It prepares the
 475  * land and cleans the area once completed.
 476  * Note: this function modifies the line parameter.
 477  *
 478  * line - registry file unwrapped line. Should have the registry value name and
 479  *      complete registry value data.
 480  */
 481 static void processSetValue(WCHAR* line, BOOL is_unicode)
 482 {
 483     WCHAR* val_name;                   /* registry value name   */
 484     WCHAR* val_data;                   /* registry value data   */
 485     int line_idx = 0;                 /* current character under analysis */
 486     LONG res;
 487
 488     /* get value name */
 489     while ( isspaceW(line[line_idx]) ) line_idx++;
 490     if (line[line_idx] == '@' && line[line_idx + 1] == '=') {
 491         line[line_idx] = '\0';
 492         val_name = line;
 493         line_idx++;
 494     } else if (line[line_idx] == '\"') {
 495         line_idx++;
 496         val_name = line + line_idx;
 497         while (line[line_idx]) {
 498             if (line[line_idx] == '\\')   /* skip escaped character */
 499             {
 500                 line_idx += 2;
 501             } else {
 502                 if (line[line_idx] == '\"') {
 503                     line[line_idx] = '\0';
 504                     line_idx++;
 505                     break;
 506                 } else {
 507                     line_idx++;
 508                 }
 509             }
 510         }
 511         while ( isspaceW(line[line_idx]) ) line_idx++;
 512         if (!line[line_idx]) {
 513             fprintf(stderr, "%s: warning: unexpected EOL\n", getAppName());
 514             return;
 515         }
 516         if (line[line_idx] != '=') {
 517             char* lineA;
 518             line[line_idx] = '\"';
 519             lineA = GetMultiByteString(line);
 520             fprintf(stderr,"%s: warning: unrecognized line: '%s'\n", getAppName(), lineA);
 521             HeapFree(GetProcessHeap(), 0, lineA);
 522             return;
 523         }
 524
 525     } else {
 526         char* lineA = GetMultiByteString(line);
 527         fprintf(stderr,"%s: warning: unrecognized line: '%s'\n", getAppName(), lineA);
 528         HeapFree(GetProcessHeap(), 0, lineA);
 529         return;
 530     }
 531     line_idx++;                   /* skip the '=' character */
 532
 533     while ( isspaceW(line[line_idx]) ) line_idx++;
 534     val_data = line + line_idx;
 535     /* trim trailing blanks */
 536     line_idx = strlenW(val_data);
 537     while (line_idx > 0 && isspaceW(val_data[line_idx-1])) line_idx--;
 538     val_data[line_idx] = '\0';
 539
 540     REGPROC_unescape_string(val_name);
 541     res = setValue(val_name, val_data, is_unicode);
 542     if ( res != ERROR_SUCCESS )
 543     {
 544         char* val_nameA = GetMultiByteString(val_name);
 545         char* val_dataA = GetMultiByteString(val_data);
 546         fprintf(stderr,"%s: ERROR Key %s not created. Value: %s, Data: %s\n",
 547                 getAppName(),
 548                 currentKeyName,
 549                 val_nameA,
 550                 val_dataA);
 551         HeapFree(GetProcessHeap(), 0, val_nameA);
 552         HeapFree(GetProcessHeap(), 0, val_dataA);
 553     }
 554 }
 555
 556 /******************************************************************************
 557  * This function receives the currently read entry and performs the
 558  * corresponding action.
 559  * isUnicode affects parsing of REG_MULTI_SZ values
 560  */
 561 static void processRegEntry(WCHAR* stdInput, BOOL isUnicode)
 562 {
 563     /*
 564      * We encountered the end of the file, make sure we
 565      * close the opened key and exit
 566      */
 567     if (stdInput == NULL) {
 568         closeKey();
 569         return;
 570     }
 571
 572     if      ( stdInput[0] == '[')      /* We are reading a new key */
 573     {
 574         WCHAR* keyEnd;
 575         closeKey();                    /* Close the previous key */
 576
 577         /* Get rid of the square brackets */
 578         stdInput++;
 579         keyEnd = strrchrW(stdInput, ']');
 580         if (keyEnd)
 581             *keyEnd='\0';
 582
 583         /* delete the key if we encounter '-' at the start of reg key */
 584         if ( stdInput[0] == '-')
 585         {
 586             delete_registry_key(stdInput + 1);
 587         } else if ( openKeyW(stdInput) != ERROR_SUCCESS )
 588         {
 589             char* stdInputA = GetMultiByteString(stdInput);
 590             fprintf(stderr,"%s: setValue failed to open key %s\n",
 591                     getAppName(), stdInputA);
 592             HeapFree(GetProcessHeap(), 0, stdInputA);
 593         }
 594     } else if( currentKeyHandle &&
 595                (( stdInput[0] == '@') || /* reading a default @=data pair */
 596                 ( stdInput[0] == '\"'))) /* reading a new value=data pair */
 597     {
 598         processSetValue(stdInput, isUnicode);
 599     } else
 600     {
 601         /* Since we are assuming that the file format is valid we must be
 602          * reading a blank line which indicates the end of this key processing
 603          */
 604         closeKey();
 605     }
 606 }
 607
 608 /******************************************************************************
 609  * Processes a registry file.
 610  * Correctly processes comments (in # and ; form), line continuation.
 611  *
 612  * Parameters:
 613  *   in - input stream to read from
 614  *   first_chars - beginning of stream, read due to Unicode check
 615  */
 616 static void processRegLinesA(FILE *in, char* first_chars)
 617 {
 618     LPSTR line           = NULL;  /* line read from input stream */
 619     ULONG lineSize       = REG_VAL_BUF_SIZE;
 620
 621     line = HeapAlloc(GetProcessHeap(), 0, lineSize);
 622     CHECK_ENOUGH_MEMORY(line);
 623     memcpy(line, first_chars, 2);
 624
 625     while (!feof(in)) {
 626         LPSTR s; /* The pointer into line for where the current fgets should read */
 627         WCHAR* lineW;
 628         s = line;
 629
 630         if(first_chars)
 631         {
 632             s += 2;
 633             first_chars = NULL;
 634         }
 635
 636         for (;;) {
 637             size_t size_remaining;
 638             int size_to_get, i;
 639             char *s_eol; /* various local uses */
 640
 641             /* Do we need to expand the buffer ? */
 642             assert (s >= line && s <= line + lineSize);
 643             size_remaining = lineSize - (s-line);
 644             if (size_remaining < 2) /* room for 1 character and the \0 */
 645             {
 646                 char *new_buffer;
 647                 size_t new_size = lineSize + REG_VAL_BUF_SIZE;
 648                 if (new_size > lineSize) /* no arithmetic overflow */
 649                     new_buffer = HeapReAlloc (GetProcessHeap(), 0, line, new_size);
 650                 else
 651                     new_buffer = NULL;
 652                 CHECK_ENOUGH_MEMORY(new_buffer);
 653                 line = new_buffer;
 654                 s = line + lineSize - size_remaining;
 655                 lineSize = new_size;
 656                 size_remaining = lineSize - (s-line);
 657             }
 658
 659             /* Get as much as possible into the buffer, terminated either by
 660              * eof, error, eol or getting the maximum amount.  Abort on error.
 661              */
 662             size_to_get = (size_remaining > INT_MAX ? INT_MAX : size_remaining);
 663
 664             /* get a single line. note that `i' must be one past the last
 665              * meaningful character in `s' when this loop exits */
 666             for(i = 0; i < size_to_get-1; ++i){
 667                 int xchar;
 668
 669                 xchar = fgetc(in);
 670                 s[i] = xchar;
 671                 if(xchar == EOF){
 672                     if(ferror(in)){
 673                         perror("While reading input");
 674                         exit(IO_ERROR);
 675                     }else
 676                         assert(feof(in));
 677                     break;
 678                 }
 679                 if(s[i] == '\r'){
 680                     /* read the next character iff it's \n */
 681                     if(i+2 >= size_to_get){
 682                         /* buffer too short, so put back the EOL char to
 683                          * read next cycle */
 684                         ungetc('\r', in);
 685                         break;
 686                     }
 687                     s[i+1] = fgetc(in);
 688                     if(s[i+1] != '\n'){
 689                         ungetc(s[i+1], in);
 690                         i = i+1;
 691                     }else
 692                         i = i+2;
 693                     break;
 694                 }
 695                 if(s[i] == '\n'){
 696                     i = i+1;
 697                     break;
 698                 }
 699             }
 700             s[i] = '\0';
 701
 702             /* If we didn't read the eol nor the eof go around for the rest */
 703             s_eol = strpbrk (s, "\r\n");
 704             if (!feof (in) && !s_eol) {
 705                 s = strchr (s, '\0');
 706                 continue;
 707             }
 708
 709             /* If it is a comment line then discard it and go around again */
 710             if (line [0] == '#' || line [0] == ';') {
 711                 s = line;
 712                 continue;
 713             }
 714
 715             /* Remove any line feed.  Leave s_eol on the first \0 */
 716             if (s_eol) {
 717                if (*s_eol == '\r' && *(s_eol+1) == '\n')
 718                    *(s_eol+1) = '\0';
 719                *s_eol = '\0';
 720             } else
 721                 s_eol = strchr (s, '\0');
 722
 723             /* If there is a concatenating \\ then go around again */
 724             if (s_eol > line && *(s_eol-1) == '\\') {
 725                 int c;
 726                 s = s_eol-1;
 727
 728                 do
 729                 {
 730                     c = fgetc(in);
 731                 } while(c == ' ' || c == '\t');
 732
 733                 if(c == EOF)
 734                 {
 735                     fprintf(stderr,"%s: ERROR - invalid continuation.\n",
 736                             getAppName());
 737                 }
 738                 else
 739                 {
 740                     *s = c;
 741                     s++;
 742                 }
 743                 continue;
 744             }
 745
 746             lineW = GetWideString(line);
 747
 748             break; /* That is the full virtual line */
 749         }
 750
 751         processRegEntry(lineW, FALSE);
 752         HeapFree(GetProcessHeap(), 0, lineW);
 753     }
 754     processRegEntry(NULL, FALSE);
 755
 756     HeapFree(GetProcessHeap(), 0, line);
 757 }
 758
 759 static void processRegLinesW(FILE *in)
 760 {
 761     WCHAR* buf           = NULL;  /* line read from input stream */
 762     ULONG lineSize       = REG_VAL_BUF_SIZE;
 763     size_t CharsInBuf = -1;
 764
 765     WCHAR* s; /* The pointer into buf for where the current fgets should read */
 766     WCHAR* line; /* The start of the current line */
 767
 768     buf = HeapAlloc(GetProcessHeap(), 0, lineSize * sizeof(WCHAR));
 769     CHECK_ENOUGH_MEMORY(buf);
 770
 771     s = buf;
 772     line = buf;
 773
 774     while(!feof(in)) {
 775         size_t size_remaining;
 776         int size_to_get;
 777         WCHAR *s_eol = NULL; /* various local uses */
 778
 779         /* Do we need to expand the buffer ? */
 780         assert (s >= buf && s <= buf + lineSize);
 781         size_remaining = lineSize - (s-buf);
 782         if (size_remaining < 2) /* room for 1 character and the \0 */
 783         {
 784             WCHAR *new_buffer;
 785             size_t new_size = lineSize + (REG_VAL_BUF_SIZE / sizeof(WCHAR));
 786             if (new_size > lineSize) /* no arithmetic overflow */
 787                 new_buffer = HeapReAlloc (GetProcessHeap(), 0, buf, new_size * sizeof(WCHAR));
 788             else
 789                 new_buffer = NULL;
 790             CHECK_ENOUGH_MEMORY(new_buffer);
 791             buf = new_buffer;
 792             line = buf;
 793             s = buf + lineSize - size_remaining;
 794             lineSize = new_size;
 795             size_remaining = lineSize - (s-buf);
 796         }
 797
 798         /* Get as much as possible into the buffer, terminated either by
 799         * eof, error or getting the maximum amount.  Abort on error.
 800         */
 801         size_to_get = (size_remaining > INT_MAX ? INT_MAX : size_remaining);
 802
 803         CharsInBuf = fread(s, sizeof(WCHAR), size_to_get - 1, in);
 804         s[CharsInBuf] = 0;
 805
 806         if (CharsInBuf == 0) {
 807             if (ferror(in)) {
 808                 perror ("While reading input");
 809                 exit (IO_ERROR);
 810             } else {
 811                 assert (feof(in));
 812                 *s = '\0';
 813                 /* It is not clear to me from the definition that the
 814                 * contents of the buffer are well defined on detecting
 815                 * an eof without managing to read anything.
 816                 */
 817             }
 818         }
 819
 820         /* If we didn't read the eol nor the eof go around for the rest */
 821         while(1)
 822         {
 823             const WCHAR line_endings[] = {'\r','\n',0};
 824             s_eol = strpbrkW(line, line_endings);
 825
 826             if(!s_eol) {
 827                 /* Move the stub of the line to the start of the buffer so
 828                  * we get the maximum space to read into, and so we don't
 829                  * have to recalculate 'line' if the buffer expands */
 830                 MoveMemory(buf, line, (strlenW(line)+1) * sizeof(WCHAR));
 831                 line = buf;
 832                 s = strchrW(line, '\0');
 833                 break;
 834             }
 835
 836             /* If it is a comment line then discard it and go around again */
 837             if (*line == '#' || *line == ';') {
 838                 if (*s_eol == '\r' && *(s_eol+1) == '\n')
 839                     line = s_eol + 2;
 840                 else
 841                     line = s_eol + 1;
 842                 continue;
 843             }
 844
 845             /* If there is a concatenating \\ then go around again */
 846             if (*(s_eol-1) == '\\') {
 847                 WCHAR* NextLine = s_eol + 1;
 848
 849                 if(*s_eol == '\r' && *(s_eol+1) == '\n')
 850                     NextLine++;
 851
 852                 while(*(NextLine+1) == ' ' || *(NextLine+1) == '\t')
 853                     NextLine++;
 854
 855                 MoveMemory(s_eol - 1, NextLine, (CharsInBuf - (NextLine - s) + 1)*sizeof(WCHAR));
 856                 CharsInBuf -= NextLine - s_eol + 1;
 857                 s_eol = 0;
 858                 continue;
 859             }
 860
 861             /* Remove any line feed.  Leave s_eol on the last \0 */
 862             if (*s_eol == '\r' && *(s_eol + 1) == '\n')
 863                 *s_eol++ = '\0';
 864             *s_eol = '\0';
 865
 866             processRegEntry(line, TRUE);
 867             line = s_eol + 1;
 868             s_eol = 0;
 869             continue; /* That is the full virtual line */
 870         }
 871     }
 872
 873     processRegEntry(NULL, TRUE);
 874
 875     HeapFree(GetProcessHeap(), 0, buf);
 876 }
 877
 878 /****************************************************************************
 879  * REGPROC_print_error
 880  *
 881  * Print the message for GetLastError
 882  */
 883
 884 static void REGPROC_print_error(void)
 885 {
 886     LPVOID lpMsgBuf;
 887     DWORD error_code;
 888     int status;
 889
 890     error_code = GetLastError ();
 891     status = FormatMessageA(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
 892                             NULL, error_code, 0, (LPSTR) &lpMsgBuf, 0, NULL);
 893     if (!status) {
 894         fprintf(stderr,"%s: Cannot display message for error %d, status %d\n",
 895                 getAppName(), error_code, GetLastError());
 896         exit(1);
 897     }
 898     puts(lpMsgBuf);
 899     LocalFree(lpMsgBuf);
 900     exit(1);
 901 }
 902
 903 /******************************************************************************
 904  * Checks whether the buffer has enough room for the string or required size.
 905  * Resizes the buffer if necessary.
 906  *
 907  * Parameters:
 908  * buffer - pointer to a buffer for string
 909  * len - current length of the buffer in characters.
 910  * required_len - length of the string to place to the buffer in characters.
 911  *   The length does not include the terminating null character.
 912  */
 913 static void REGPROC_resize_char_buffer(WCHAR **buffer, DWORD *len, DWORD required_len)
 914 {
 915     required_len++;
 916     if (required_len > *len) {
 917         *len = required_len;
 918         if (!*buffer)
 919             *buffer = HeapAlloc(GetProcessHeap(), 0, *len * sizeof(**buffer));
 920         else
 921             *buffer = HeapReAlloc(GetProcessHeap(), 0, *buffer, *len * sizeof(**buffer));
 922         CHECK_ENOUGH_MEMORY(*buffer);
 923     }
 924 }
 925
 926 /******************************************************************************
 927  * Same as REGPROC_resize_char_buffer() but on a regular buffer.
 928  *
 929  * Parameters:
 930  * buffer - pointer to a buffer
 931  * len - current size of the buffer in bytes
 932  * required_size - size of the data to place in the buffer in bytes
 933  */
 934 static void REGPROC_resize_binary_buffer(BYTE **buffer, DWORD *size, DWORD required_size)
 935 {
 936     if (required_size > *size) {
 937         *size = required_size;
 938         if (!*buffer)
 939             *buffer = HeapAlloc(GetProcessHeap(), 0, *size);
 940         else
 941             *buffer = HeapReAlloc(GetProcessHeap(), 0, *buffer, *size);
 942         CHECK_ENOUGH_MEMORY(*buffer);
 943     }
 944 }
 945
 946 /******************************************************************************
 947  * Prints string str to file
 948  */
 949 static void REGPROC_export_string(WCHAR **line_buf, DWORD *line_buf_size, DWORD *line_len, WCHAR *str, DWORD str_len)
 950 {
 951     DWORD i, pos;
 952     DWORD extra = 0;
 953
 954     REGPROC_resize_char_buffer(line_buf, line_buf_size, *line_len + str_len + 10);
 955
 956     /* escaping characters */
 957     pos = *line_len;
 958     for (i = 0; i < str_len; i++) {
 959         WCHAR c = str[i];
 960         switch (c) {
 961         case '\n':
 962             extra++;
 963             REGPROC_resize_char_buffer(line_buf, line_buf_size, *line_len + str_len + extra);
 964             (*line_buf)[pos++] = '\\';
 965             (*line_buf)[pos++] = 'n';
 966             break;
 967
 968         case '\r':
 969             extra++;
 970             REGPROC_resize_char_buffer(line_buf, line_buf_size, *line_len + str_len + extra);
 971             (*line_buf)[pos++] = '\\';
 972             (*line_buf)[pos++] = 'r';
 973             break;
 974
 975         case '\\':
 976         case '"':
 977             extra++;
 978             REGPROC_resize_char_buffer(line_buf, line_buf_size, *line_len + str_len + extra);
 979             (*line_buf)[pos++] = '\\';
 980             /* Fall through */
 981
 982         default:
 983             (*line_buf)[pos++] = c;
 984             break;
 985         }
 986     }
 987     (*line_buf)[pos] = '\0';
 988     *line_len = pos;
 989 }
 990
 991 static void REGPROC_export_binary(WCHAR **line_buf, DWORD *line_buf_size, DWORD *line_len, DWORD type, BYTE *value, DWORD value_size, BOOL unicode)
 992 {
 993     DWORD hex_pos, data_pos;
 994     const WCHAR *hex_prefix;
 995     const WCHAR hex[] = {'h','e','x',':',0};
 996     WCHAR hex_buf[17];
 997     const WCHAR concat[] = {'\\','\r','\n',' ',' ',0};
 998     DWORD concat_prefix, concat_len;
 999     const WCHAR newline[] = {'\r','\n',0};
1000     CHAR* value_multibyte = NULL;
1001
1002     if (type == REG_BINARY) {
1003         hex_prefix = hex;
1004     } else {
1005         const WCHAR hex_format[] = {'h','e','x','(','%','x',')',':',0};
1006         hex_prefix = hex_buf;
1007         sprintfW(hex_buf, hex_format, type);
1008         if ((type == REG_SZ || type == REG_EXPAND_SZ || type == REG_MULTI_SZ) && !unicode)
1009         {
1010             value_multibyte = GetMultiByteStringN((WCHAR*)value, value_size / sizeof(WCHAR), &value_size);
1011             value = (BYTE*)value_multibyte;
1012         }
1013     }
1014
1015     concat_len = lstrlenW(concat);
1016     concat_prefix = 2;
1017
1018     hex_pos = *line_len;
1019     *line_len += lstrlenW(hex_prefix);
1020     data_pos = *line_len;
1021     *line_len += value_size * 3;
1022     /* - The 2 spaces that concat places at the start of the
1023      *   line effectively reduce the space available for data.
1024      * - If the value name and hex prefix are very long
1025      *   ( > REG_FILE_HEX_LINE_LEN) or *line_len divides
1026      *   without a remainder then we may overestimate
1027      *   the needed number of lines by one. But that's ok.
1028      * - The trailing '\r' takes the place of a comma so
1029      *   we only need to add 1 for the trailing '\n'
1030      */
1031     *line_len += *line_len / (REG_FILE_HEX_LINE_LEN - concat_prefix) * concat_len + 1;
1032     REGPROC_resize_char_buffer(line_buf, line_buf_size, *line_len);
1033     lstrcpyW(*line_buf + hex_pos, hex_prefix);
1034     if (value_size)
1035     {
1036         const WCHAR format[] = {'%','0','2','x',0};
1037         DWORD i, column;
1038
1039         column = data_pos; /* no line wrap yet */
1040         i = 0;
1041         while (1)
1042         {
1043             sprintfW(*line_buf + data_pos, format, (unsigned int)value[i]);
1044             data_pos += 2;
1045             if (++i == value_size)
1046                 break;
1047
1048             (*line_buf)[data_pos++] = ',';
1049             column += 3;
1050
1051             /* wrap the line */
1052             if (column >= REG_FILE_HEX_LINE_LEN) {
1053                 lstrcpyW(*line_buf + data_pos, concat);
1054                 data_pos += concat_len;
1055                 column = concat_prefix;
1056             }
1057         }
1058     }
1059     lstrcpyW(*line_buf + data_pos, newline);
1060     HeapFree(GetProcessHeap(), 0, value_multibyte);
1061 }
1062
1063 /******************************************************************************
1064  * Writes the given line to a file, in multi-byte or wide characters
1065  */
1066 static void REGPROC_write_line(FILE *file, const WCHAR* str, BOOL unicode)
1067 {
1068     if(unicode)
1069     {
1070         fwrite(str, sizeof(WCHAR), lstrlenW(str), file);
1071     } else
1072     {
1073         char* strA = GetMultiByteString(str);
1074         fputs(strA, file);
1075         HeapFree(GetProcessHeap(), 0, strA);
1076     }
1077 }
1078
1079 /******************************************************************************
1080  * Writes contents of the registry key to the specified file stream.
1081  *
1082  * Parameters:
1083  * file - writable file stream to export registry branch to.
1084  * key - registry branch to export.
1085  * reg_key_name_buf - name of the key with registry class.
1086  *      Is resized if necessary.
1087  * reg_key_name_size - length of the buffer for the registry class in characters.
1088  * val_name_buf - buffer for storing value name.
1089  *      Is resized if necessary.
1090  * val_name_size - length of the buffer for storing value names in characters.
1091  * val_buf - buffer for storing values while extracting.
1092  *      Is resized if necessary.
1093  * val_size - size of the buffer for storing values in bytes.
1094  */
1095 static void export_hkey(FILE *file, HKEY key,
1096                  WCHAR **reg_key_name_buf, DWORD *reg_key_name_size,
1097                  WCHAR **val_name_buf, DWORD *val_name_size,
1098                  BYTE **val_buf, DWORD *val_size,
1099                  WCHAR **line_buf, DWORD *line_buf_size,
1100                  BOOL unicode)
1101 {
1102     DWORD max_sub_key_len;
1103     DWORD max_val_name_len;
1104     DWORD max_val_size;
1105     DWORD curr_len;
1106     DWORD i;
1107     BOOL more_data;
1108     LONG ret;
1109     WCHAR key_format[] = {'\r','\n','[','%','s',']','\r','\n',0};
1110
1111     /* get size information and resize the buffers if necessary */
1112     if (RegQueryInfoKeyW(key, NULL, NULL, NULL, NULL,
1113                         &max_sub_key_len, NULL,
1114                         NULL, &max_val_name_len, &max_val_size, NULL, NULL
1115                        ) != ERROR_SUCCESS) {
1116         REGPROC_print_error();
1117     }
1118     curr_len = strlenW(*reg_key_name_buf);
1119     REGPROC_resize_char_buffer(reg_key_name_buf, reg_key_name_size,
1120                                max_sub_key_len + curr_len + 1);
1121     REGPROC_resize_char_buffer(val_name_buf, val_name_size,
1122                                max_val_name_len);
1123     REGPROC_resize_binary_buffer(val_buf, val_size, max_val_size);
1124     REGPROC_resize_char_buffer(line_buf, line_buf_size, lstrlenW(*reg_key_name_buf) + 4);
1125     /* output data for the current key */
1126     sprintfW(*line_buf, key_format, *reg_key_name_buf);
1127     REGPROC_write_line(file, *line_buf, unicode);
1128
1129     /* print all the values */
1130     i = 0;
1131     more_data = TRUE;
1132     while(more_data) {
1133         DWORD value_type;
1134         DWORD val_name_size1 = *val_name_size;
1135         DWORD val_size1 = *val_size;
1136         ret = RegEnumValueW(key, i, *val_name_buf, &val_name_size1, NULL,
1137                            &value_type, *val_buf, &val_size1);
1138         if (ret == ERROR_MORE_DATA) {
1139             /* Increase the size of the buffers and retry */
1140             REGPROC_resize_char_buffer(val_name_buf, val_name_size, val_name_size1);
1141             REGPROC_resize_binary_buffer(val_buf, val_size, val_size1);
1142         } else if (ret != ERROR_SUCCESS) {
1143             more_data = FALSE;
1144             if (ret != ERROR_NO_MORE_ITEMS) {
1145                 REGPROC_print_error();
1146             }
1147         } else {
1148             DWORD line_len;
1149             i++;
1150
1151             if ((*val_name_buf)[0]) {
1152                 const WCHAR val_start[] = {'"','%','s','"','=',0};
1153
1154                 line_len = 0;
1155                 REGPROC_export_string(line_buf, line_buf_size, &line_len, *val_name_buf, lstrlenW(*val_name_buf));
1156                 REGPROC_resize_char_buffer(val_name_buf, val_name_size, lstrlenW(*line_buf) + 1);
1157                 lstrcpyW(*val_name_buf, *line_buf);
1158
1159                 line_len = 3 + lstrlenW(*val_name_buf);
1160                 REGPROC_resize_char_buffer(line_buf, line_buf_size, line_len);
1161                 sprintfW(*line_buf, val_start, *val_name_buf);
1162             } else {
1163                 const WCHAR std_val[] = {'@','=',0};
1164                 line_len = 2;
1165                 REGPROC_resize_char_buffer(line_buf, line_buf_size, line_len);
1166                 lstrcpyW(*line_buf, std_val);
1167             }
1168
1169             switch (value_type) {
1170             case REG_SZ:
1171             {
1172                 WCHAR* wstr = (WCHAR*)*val_buf;
1173
1174                 if (val_size1 < sizeof(WCHAR) || val_size1 % sizeof(WCHAR) ||
1175                     wstr[val_size1 / sizeof(WCHAR) - 1]) {
1176                     REGPROC_export_binary(line_buf, line_buf_size, &line_len, value_type, *val_buf, val_size1, unicode);
1177                 } else {
1178                     const WCHAR start[] = {'"',0};
1179                     const WCHAR end[] = {'"','\r','\n',0};
1180                     DWORD len;
1181
1182                     len = lstrlenW(start);
1183                     REGPROC_resize_char_buffer(line_buf, line_buf_size, line_len + len);
1184                     lstrcpyW(*line_buf + line_len, start);
1185                     line_len += len;
1186
1187                     REGPROC_export_string(line_buf, line_buf_size, &line_len, wstr, lstrlenW(wstr));
1188
1189                     REGPROC_resize_char_buffer(line_buf, line_buf_size, line_len + lstrlenW(end));
1190                     lstrcpyW(*line_buf + line_len, end);
1191                 }
1192                 break;
1193             }
1194
1195             case REG_DWORD:
1196             {
1197                 WCHAR format[] = {'d','w','o','r','d',':','%','0','8','x','\r','\n',0};
1198
1199                 REGPROC_resize_char_buffer(line_buf, line_buf_size, line_len + 15);
1200                 sprintfW(*line_buf + line_len, format, *((DWORD *)*val_buf));
1201                 break;
1202             }
1203
1204             default:
1205             {
1206                 char* key_nameA = GetMultiByteString(*reg_key_name_buf);
1207                 char* value_nameA = GetMultiByteString(*val_name_buf);
1208                 fprintf(stderr,"%s: warning - unsupported registry format '%d', "
1209                         "treat as binary\n",
1210                         getAppName(), value_type);
1211                 fprintf(stderr,"key name: \"%s\"\n", key_nameA);
1212                 fprintf(stderr,"value name:\"%s\"\n\n", value_nameA);
1213                 HeapFree(GetProcessHeap(), 0, key_nameA);
1214                 HeapFree(GetProcessHeap(), 0, value_nameA);
1215             }
1216                 /* falls through */
1217             case REG_EXPAND_SZ:
1218             case REG_MULTI_SZ:
1219                 /* falls through */
1220             case REG_BINARY:
1221                 REGPROC_export_binary(line_buf, line_buf_size, &line_len, value_type, *val_buf, val_size1, unicode);
1222             }
1223             REGPROC_write_line(file, *line_buf, unicode);
1224         }
1225     }
1226
1227     i = 0;
1228     more_data = TRUE;
1229     (*reg_key_name_buf)[curr_len] = '\\';
1230     while(more_data) {
1231         DWORD buf_size = *reg_key_name_size - curr_len - 1;
1232
1233         ret = RegEnumKeyExW(key, i, *reg_key_name_buf + curr_len + 1, &buf_size,
1234                            NULL, NULL, NULL, NULL);
1235         if (ret == ERROR_MORE_DATA) {
1236             /* Increase the size of the buffer and retry */
1237             REGPROC_resize_char_buffer(reg_key_name_buf, reg_key_name_size, curr_len + 1 + buf_size);
1238         } else if (ret != ERROR_SUCCESS) {
1239             more_data = FALSE;
1240             if (ret != ERROR_NO_MORE_ITEMS) {
1241                 REGPROC_print_error();
1242             }
1243         } else {
1244             HKEY subkey;
1245
1246             i++;
1247             if (RegOpenKeyW(key, *reg_key_name_buf + curr_len + 1,
1248                            &subkey) == ERROR_SUCCESS) {
1249                 export_hkey(file, subkey, reg_key_name_buf, reg_key_name_size,
1250                             val_name_buf, val_name_size, val_buf, val_size,
1251                             line_buf, line_buf_size, unicode);
1252                 RegCloseKey(subkey);
1253             } else {
1254                 REGPROC_print_error();
1255             }
1256         }
1257     }
1258     (*reg_key_name_buf)[curr_len] = '\0';
1259 }
1260
1261 /******************************************************************************
1262  * Open file in binary mode for export.
1263  */
1264 static FILE *REGPROC_open_export_file(WCHAR *file_name, BOOL unicode)
1265 {
1266     FILE *file;
1267     WCHAR dash = '-';
1268
1269     if (strncmpW(file_name,&dash,1)==0) {
1270         file=stdout;
1271         _setmode(_fileno(file), _O_BINARY);
1272     } else
1273     {
1274         CHAR* file_nameA = GetMultiByteString(file_name);
1275         file = fopen(file_nameA, "wb");
1276         if (!file) {
1277             perror("");
1278             fprintf(stderr,"%s: Can't open file \"%s\"\n", getAppName(), file_nameA);
1279             HeapFree(GetProcessHeap(), 0, file_nameA);
1280             exit(1);
1281         }
1282         HeapFree(GetProcessHeap(), 0, file_nameA);
1283     }
1284     if(unicode)
1285     {
1286         const BYTE unicode_seq[] = {0xff,0xfe};
1287         const WCHAR header[] = {'W','i','n','d','o','w','s',' ','R','e','g','i','s','t','r','y',' ','E','d','i','t','o','r',' ','V','e','r','s','i','o','n',' ','5','.','0','0','\r','\n'};
1288         fwrite(unicode_seq, sizeof(BYTE), sizeof(unicode_seq)/sizeof(unicode_seq[0]), file);
1289         fwrite(header, sizeof(WCHAR), sizeof(header)/sizeof(header[0]), file);
1290     } else
1291     {
1292         fputs("REGEDIT4\r\n", file);
1293     }
1294
1295     return file;
1296 }
1297
1298 /******************************************************************************
1299  * Writes contents of the registry key to the specified file stream.
1300  *
1301  * Parameters:
1302  * file_name - name of a file to export registry branch to.
1303  * reg_key_name - registry branch to export. The whole registry is exported if
1304  *      reg_key_name is NULL or contains an empty string.
1305  */
1306 BOOL export_registry_key(WCHAR *file_name, WCHAR *reg_key_name, DWORD format)
1307 {
1308     WCHAR *reg_key_name_buf;
1309     WCHAR *val_name_buf;
1310     BYTE *val_buf;
1311     WCHAR *line_buf;
1312     DWORD reg_key_name_size = KEY_MAX_LEN;
1313     DWORD val_name_size = KEY_MAX_LEN;
1314     DWORD val_size = REG_VAL_BUF_SIZE;
1315     DWORD line_buf_size = KEY_MAX_LEN + REG_VAL_BUF_SIZE;
1316     FILE *file = NULL;
1317     BOOL unicode = (format == REG_FORMAT_5);
1318
1319     reg_key_name_buf = HeapAlloc(GetProcessHeap(), 0,
1320                                  reg_key_name_size  * sizeof(*reg_key_name_buf));
1321     val_name_buf = HeapAlloc(GetProcessHeap(), 0,
1322                              val_name_size * sizeof(*val_name_buf));
1323     val_buf = HeapAlloc(GetProcessHeap(), 0, val_size);
1324     line_buf = HeapAlloc(GetProcessHeap(), 0, line_buf_size * sizeof(*line_buf));
1325     CHECK_ENOUGH_MEMORY(reg_key_name_buf && val_name_buf && val_buf && line_buf);
1326
1327     if (reg_key_name && reg_key_name[0]) {
1328         HKEY reg_key_class;
1329         WCHAR *branch_name = NULL;
1330         HKEY key;
1331
1332         REGPROC_resize_char_buffer(&reg_key_name_buf, &reg_key_name_size,
1333                                    lstrlenW(reg_key_name));
1334         lstrcpyW(reg_key_name_buf, reg_key_name);
1335
1336         /* open the specified key */
1337         if (!parseKeyName(reg_key_name, &reg_key_class, &branch_name)) {
1338             CHAR* key_nameA = GetMultiByteString(reg_key_name);
1339             fprintf(stderr,"%s: Incorrect registry class specification in '%s'\n",
1340                     getAppName(), key_nameA);
1341             HeapFree(GetProcessHeap(), 0, key_nameA);
1342             exit(1);
1343         }
1344         if (!branch_name[0]) {
1345             /* no branch - registry class is specified */
1346             file = REGPROC_open_export_file(file_name, unicode);
1347             export_hkey(file, reg_key_class,
1348                         &reg_key_name_buf, &reg_key_name_size,
1349                         &val_name_buf, &val_name_size,
1350                         &val_buf, &val_size, &line_buf,
1351                         &line_buf_size, unicode);
1352         } else if (RegOpenKeyW(reg_key_class, branch_name, &key) == ERROR_SUCCESS) {
1353             file = REGPROC_open_export_file(file_name, unicode);
1354             export_hkey(file, key,
1355                         &reg_key_name_buf, &reg_key_name_size,
1356                         &val_name_buf, &val_name_size,
1357                         &val_buf, &val_size, &line_buf,
1358                         &line_buf_size, unicode);
1359             RegCloseKey(key);
1360         } else {
1361             CHAR* key_nameA = GetMultiByteString(reg_key_name);
1362             fprintf(stderr,"%s: Can't export. Registry key '%s' does not exist!\n",
1363                     getAppName(), key_nameA);
1364             HeapFree(GetProcessHeap(), 0, key_nameA);
1365             REGPROC_print_error();
1366         }
1367     } else {
1368         unsigned int i;
1369
1370         /* export all registry classes */
1371         file = REGPROC_open_export_file(file_name, unicode);
1372         for (i = 0; i < REG_CLASS_NUMBER; i++) {
1373             /* do not export HKEY_CLASSES_ROOT */
1374             if (reg_class_keys[i] != HKEY_CLASSES_ROOT &&
1375                     reg_class_keys[i] != HKEY_CURRENT_USER &&
1376                     reg_class_keys[i] != HKEY_CURRENT_CONFIG &&
1377                     reg_class_keys[i] != HKEY_DYN_DATA) {
1378                 lstrcpyW(reg_key_name_buf, reg_class_namesW[i]);
1379                 export_hkey(file, reg_class_keys[i],
1380                             &reg_key_name_buf, &reg_key_name_size,
1381                             &val_name_buf, &val_name_size,
1382                             &val_buf, &val_size, &line_buf,
1383                             &line_buf_size, unicode);
1384             }
1385         }
1386     }
1387
1388     if (file) {
1389         fclose(file);
1390     }
1391     HeapFree(GetProcessHeap(), 0, reg_key_name);
1392     HeapFree(GetProcessHeap(), 0, val_name_buf);
1393     HeapFree(GetProcessHeap(), 0, val_buf);
1394     HeapFree(GetProcessHeap(), 0, line_buf);
1395     return TRUE;
1396 }
1397
1398 /******************************************************************************
1399  * Reads contents of the specified file into the registry.
1400  */
1401 BOOL import_registry_file(FILE* reg_file)
1402 {
1403     if (reg_file)
1404     {
1405         BYTE s[2];
1406         if (fread( s, 2, 1, reg_file) == 1)
1407         {
1408             if (s[0] == 0xff && s[1] == 0xfe)
1409             {
1410                 processRegLinesW(reg_file);
1411             } else
1412             {
1413                 processRegLinesA(reg_file, (char*)s);
1414             }
1415         }
1416         return TRUE;
1417     }
1418     return FALSE;
1419 }
1420
1421 /******************************************************************************
1422  * Removes the registry key with all subkeys. Parses full key name.
1423  *
1424  * Parameters:
1425  * reg_key_name - full name of registry branch to delete. Ignored if is NULL,
1426  *      empty, points to register key class, does not exist.
1427  */
1428 void delete_registry_key(WCHAR *reg_key_name)
1429 {
1430     WCHAR *key_name = NULL;
1431     HKEY key_class;
1432
1433     if (!reg_key_name || !reg_key_name[0])
1434         return;
1435
1436     if (!parseKeyName(reg_key_name, &key_class, &key_name)) {
1437         char* reg_key_nameA = GetMultiByteString(reg_key_name);
1438         fprintf(stderr,"%s: Incorrect registry class specification in '%s'\n",
1439                 getAppName(), reg_key_nameA);
1440         HeapFree(GetProcessHeap(), 0, reg_key_nameA);
1441         exit(1);
1442     }
1443     if (!*key_name) {
1444         char* reg_key_nameA = GetMultiByteString(reg_key_name);
1445         fprintf(stderr,"%s: Can't delete registry class '%s'\n",
1446                 getAppName(), reg_key_nameA);
1447         HeapFree(GetProcessHeap(), 0, reg_key_nameA);
1448         exit(1);
1449     }
1450
1451     RegDeleteTreeW(key_class, key_name);
1452 }