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++;  /* include terminating null */
 380         dwLen = dwLen * sizeof(WCHAR); /* size is in bytes */
 381     }
 382     else if (dwParseType == REG_DWORD)  /* Convert the dword types */
 383     {
 384         if (!convertHexToDWord(val_data, &dwData))
 385             return ERROR_INVALID_DATA;
 386         lpbData = (BYTE*)&dwData;
 387         dwLen = sizeof(dwData);
 388     }
 389     else if (dwParseType == REG_BINARY) /* Convert the binary data */
 390     {
 391         lpbData = convertHexCSVToHex(val_data, &dwLen);
 392         if (!lpbData)
 393             return ERROR_INVALID_DATA;
 394
 395         if((dwDataType == REG_MULTI_SZ || dwDataType == REG_EXPAND_SZ) && !is_unicode)
 396         {
 397             LPBYTE tmp = lpbData;
 398             lpbData = (LPBYTE)GetWideStringN((char*)lpbData, dwLen, &dwLen);
 399             dwLen *= sizeof(WCHAR);
 400             HeapFree(GetProcessHeap(), 0, tmp);
 401         }
 402     }
 403     else                                /* unknown format */
 404     {
 405         fprintf(stderr,"%s: ERROR, unknown data format\n", getAppName());
 406         return ERROR_INVALID_DATA;
 407     }
 408
 409     res = RegSetValueExW(
 410                currentKeyHandle,
 411                val_name,
 412                0,                  /* Reserved */
 413                dwDataType,
 414                lpbData,
 415                dwLen);
 416     if (dwParseType == REG_BINARY)
 417         HeapFree(GetProcessHeap(), 0, lpbData);
 418     return res;
 419 }
 420
 421 /******************************************************************************
 422  * A helper function for processRegEntry() that opens the current key.
 423  * That key must be closed by calling closeKey().
 424  */
 425 static LONG openKeyW(WCHAR* stdInput)
 426 {
 427     HKEY keyClass;
 428     WCHAR* keyPath;
 429     DWORD dwDisp;
 430     LONG res;
 431
 432     /* Sanity checks */
 433     if (stdInput == NULL)
 434         return ERROR_INVALID_PARAMETER;
 435
 436     /* Get the registry class */
 437     if (!parseKeyName(stdInput, &keyClass, &keyPath))
 438         return ERROR_INVALID_PARAMETER;
 439
 440     res = RegCreateKeyExW(
 441                keyClass,                 /* Class     */
 442                keyPath,                  /* Sub Key   */
 443                0,                        /* MUST BE 0 */
 444                NULL,                     /* object type */
 445                REG_OPTION_NON_VOLATILE,  /* option, REG_OPTION_NON_VOLATILE ... */
 446                KEY_ALL_ACCESS,           /* access mask, KEY_ALL_ACCESS */
 447                NULL,                     /* security attribute */
 448                &currentKeyHandle,        /* result */
 449                &dwDisp);                 /* disposition, REG_CREATED_NEW_KEY or
 450                                                         REG_OPENED_EXISTING_KEY */
 451
 452     if (res == ERROR_SUCCESS)
 453         currentKeyName = GetMultiByteString(stdInput);
 454     else
 455         currentKeyHandle = NULL;
 456
 457     return res;
 458
 459 }
 460
 461 /******************************************************************************
 462  * Close the currently opened key.
 463  */
 464 static void closeKey(void)
 465 {
 466     if (currentKeyHandle)
 467     {
 468         HeapFree(GetProcessHeap(), 0, currentKeyName);
 469         RegCloseKey(currentKeyHandle);
 470         currentKeyHandle = NULL;
 471     }
 472 }
 473
 474 /******************************************************************************
 475  * This function is a wrapper for the setValue function.  It prepares the
 476  * land and cleans the area once completed.
 477  * Note: this function modifies the line parameter.
 478  *
 479  * line - registry file unwrapped line. Should have the registry value name and
 480  *      complete registry value data.
 481  */
 482 static void processSetValue(WCHAR* line, BOOL is_unicode)
 483 {
 484     WCHAR* val_name;                   /* registry value name   */
 485     WCHAR* val_data;                   /* registry value data   */
 486     int line_idx = 0;                 /* current character under analysis */
 487     LONG res;
 488
 489     /* get value name */
 490     while ( isspaceW(line[line_idx]) ) line_idx++;
 491     if (line[line_idx] == '@' && line[line_idx + 1] == '=') {
 492         line[line_idx] = '\0';
 493         val_name = line;
 494         line_idx++;
 495     } else if (line[line_idx] == '\"') {
 496         line_idx++;
 497         val_name = line + line_idx;
 498         while (line[line_idx]) {
 499             if (line[line_idx] == '\\')   /* skip escaped character */
 500             {
 501                 line_idx += 2;
 502             } else {
 503                 if (line[line_idx] == '\"') {
 504                     line[line_idx] = '\0';
 505                     line_idx++;
 506                     break;
 507                 } else {
 508                     line_idx++;
 509                 }
 510             }
 511         }
 512         while ( isspaceW(line[line_idx]) ) line_idx++;
 513         if (!line[line_idx]) {
 514             fprintf(stderr, "%s: warning: unexpected EOL\n", getAppName());
 515             return;
 516         }
 517         if (line[line_idx] != '=') {
 518             char* lineA;
 519             line[line_idx] = '\"';
 520             lineA = GetMultiByteString(line);
 521             fprintf(stderr,"%s: warning: unrecognized line: '%s'\n", getAppName(), lineA);
 522             HeapFree(GetProcessHeap(), 0, lineA);
 523             return;
 524         }
 525
 526     } else {
 527         char* lineA = GetMultiByteString(line);
 528         fprintf(stderr,"%s: warning: unrecognized line: '%s'\n", getAppName(), lineA);
 529         HeapFree(GetProcessHeap(), 0, lineA);
 530         return;
 531     }
 532     line_idx++;                   /* skip the '=' character */
 533
 534     while ( isspaceW(line[line_idx]) ) line_idx++;
 535     val_data = line + line_idx;
 536     /* trim trailing blanks */
 537     line_idx = strlenW(val_data);
 538     while (line_idx > 0 && isspaceW(val_data[line_idx-1])) line_idx--;
 539     val_data[line_idx] = '\0';
 540
 541     REGPROC_unescape_string(val_name);
 542     res = setValue(val_name, val_data, is_unicode);
 543     if ( res != ERROR_SUCCESS )
 544     {
 545         char* val_nameA = GetMultiByteString(val_name);
 546         char* val_dataA = GetMultiByteString(val_data);
 547         fprintf(stderr,"%s: ERROR Key %s not created. Value: %s, Data: %s\n",
 548                 getAppName(),
 549                 currentKeyName,
 550                 val_nameA,
 551                 val_dataA);
 552         HeapFree(GetProcessHeap(), 0, val_nameA);
 553         HeapFree(GetProcessHeap(), 0, val_dataA);
 554     }
 555 }
 556
 557 /******************************************************************************
 558  * This function receives the currently read entry and performs the
 559  * corresponding action.
 560  * isUnicode affects parsing of REG_MULTI_SZ values
 561  */
 562 static void processRegEntry(WCHAR* stdInput, BOOL isUnicode)
 563 {
 564     /*
 565      * We encountered the end of the file, make sure we
 566      * close the opened key and exit
 567      */
 568     if (stdInput == NULL) {
 569         closeKey();
 570         return;
 571     }
 572
 573     if      ( stdInput[0] == '[')      /* We are reading a new key */
 574     {
 575         WCHAR* keyEnd;
 576         closeKey();                    /* Close the previous key */
 577
 578         /* Get rid of the square brackets */
 579         stdInput++;
 580         keyEnd = strrchrW(stdInput, ']');
 581         if (keyEnd)
 582             *keyEnd='\0';
 583
 584         /* delete the key if we encounter '-' at the start of reg key */
 585         if ( stdInput[0] == '-')
 586         {
 587             delete_registry_key(stdInput + 1);
 588         } else if ( openKeyW(stdInput) != ERROR_SUCCESS )
 589         {
 590             char* stdInputA = GetMultiByteString(stdInput);
 591             fprintf(stderr,"%s: setValue failed to open key %s\n",
 592                     getAppName(), stdInputA);
 593             HeapFree(GetProcessHeap(), 0, stdInputA);
 594         }
 595     } else if( currentKeyHandle &&
 596                (( stdInput[0] == '@') || /* reading a default @=data pair */
 597                 ( stdInput[0] == '\"'))) /* reading a new value=data pair */
 598     {
 599         processSetValue(stdInput, isUnicode);
 600     } else
 601     {
 602         /* Since we are assuming that the file format is valid we must be
 603          * reading a blank line which indicates the end of this key processing
 604          */
 605         closeKey();
 606     }
 607 }
 608
 609 /******************************************************************************
 610  * Processes a registry file.
 611  * Correctly processes comments (in # and ; form), line continuation.
 612  *
 613  * Parameters:
 614  *   in - input stream to read from
 615  *   first_chars - beginning of stream, read due to Unicode check
 616  */
 617 static void processRegLinesA(FILE *in, char* first_chars)
 618 {
 619     LPSTR line           = NULL;  /* line read from input stream */
 620     ULONG lineSize       = REG_VAL_BUF_SIZE;
 621
 622     line = HeapAlloc(GetProcessHeap(), 0, lineSize);
 623     CHECK_ENOUGH_MEMORY(line);
 624     memcpy(line, first_chars, 2);
 625
 626     while (!feof(in)) {
 627         LPSTR s; /* The pointer into line for where the current fgets should read */
 628         WCHAR* lineW;
 629         s = line;
 630
 631         if(first_chars)
 632         {
 633             s += 2;
 634             first_chars = NULL;
 635         }
 636
 637         for (;;) {
 638             size_t size_remaining;
 639             int size_to_get, i;
 640             char *s_eol; /* various local uses */
 641
 642             /* Do we need to expand the buffer ? */
 643             assert (s >= line && s <= line + lineSize);
 644             size_remaining = lineSize - (s-line);
 645             if (size_remaining < 2) /* room for 1 character and the \0 */
 646             {
 647                 char *new_buffer;
 648                 size_t new_size = lineSize + REG_VAL_BUF_SIZE;
 649                 if (new_size > lineSize) /* no arithmetic overflow */
 650                     new_buffer = HeapReAlloc (GetProcessHeap(), 0, line, new_size);
 651                 else
 652                     new_buffer = NULL;
 653                 CHECK_ENOUGH_MEMORY(new_buffer);
 654                 line = new_buffer;
 655                 s = line + lineSize - size_remaining;
 656                 lineSize = new_size;
 657                 size_remaining = lineSize - (s-line);
 658             }
 659
 660             /* Get as much as possible into the buffer, terminated either by
 661              * eof, error, eol or getting the maximum amount.  Abort on error.
 662              */
 663             size_to_get = (size_remaining > INT_MAX ? INT_MAX : size_remaining);
 664
 665             /* get a single line. note that `i' must be one past the last
 666              * meaningful character in `s' when this loop exits */
 667             for(i = 0; i < size_to_get-1; ++i){
 668                 int xchar;
 669
 670                 xchar = fgetc(in);
 671                 s[i] = xchar;
 672                 if(xchar == EOF){
 673                     if(ferror(in)){
 674                         perror("While reading input");
 675                         exit(IO_ERROR);
 676                     }else
 677                         assert(feof(in));
 678                     break;
 679                 }
 680                 if(s[i] == '\r'){
 681                     /* read the next character iff it's \n */
 682                     if(i+2 >= size_to_get){
 683                         /* buffer too short, so put back the EOL char to
 684                          * read next cycle */
 685                         ungetc('\r', in);
 686                         break;
 687                     }
 688                     s[i+1] = fgetc(in);
 689                     if(s[i+1] != '\n'){
 690                         ungetc(s[i+1], in);
 691                         i = i+1;
 692                     }else
 693                         i = i+2;
 694                     break;
 695                 }
 696                 if(s[i] == '\n'){
 697                     i = i+1;
 698                     break;
 699                 }
 700             }
 701             s[i] = '\0';
 702
 703             /* If we didn't read the eol nor the eof go around for the rest */
 704             s_eol = strpbrk (s, "\r\n");
 705             if (!feof (in) && !s_eol) {
 706                 s = strchr (s, '\0');
 707                 continue;
 708             }
 709
 710             /* If it is a comment line then discard it and go around again */
 711             if (line [0] == '#' || line [0] == ';') {
 712                 s = line;
 713                 continue;
 714             }
 715
 716             /* Remove any line feed.  Leave s_eol on the first \0 */
 717             if (s_eol) {
 718                if (*s_eol == '\r' && *(s_eol+1) == '\n')
 719                    *(s_eol+1) = '\0';
 720                *s_eol = '\0';
 721             } else
 722                 s_eol = strchr (s, '\0');
 723
 724             /* If there is a concatenating \\ then go around again */
 725             if (s_eol > line && *(s_eol-1) == '\\') {
 726                 int c;
 727                 s = s_eol-1;
 728
 729                 do
 730                 {
 731                     c = fgetc(in);
 732                 } while(c == ' ' || c == '\t');
 733
 734                 if(c == EOF)
 735                 {
 736                     fprintf(stderr,"%s: ERROR - invalid continuation.\n",
 737                             getAppName());
 738                 }
 739                 else
 740                 {
 741                     *s = c;
 742                     s++;
 743                 }
 744                 continue;
 745             }
 746
 747             lineW = GetWideString(line);
 748
 749             break; /* That is the full virtual line */
 750         }
 751
 752         processRegEntry(lineW, FALSE);
 753         HeapFree(GetProcessHeap(), 0, lineW);
 754     }
 755     processRegEntry(NULL, FALSE);
 756
 757     HeapFree(GetProcessHeap(), 0, line);
 758 }
 759
 760 static void processRegLinesW(FILE *in)
 761 {
 762     WCHAR* buf           = NULL;  /* line read from input stream */
 763     ULONG lineSize       = REG_VAL_BUF_SIZE;
 764     size_t CharsInBuf = -1;
 765
 766     WCHAR* s; /* The pointer into buf for where the current fgets should read */
 767     WCHAR* line; /* The start of the current line */
 768
 769     buf = HeapAlloc(GetProcessHeap(), 0, lineSize * sizeof(WCHAR));
 770     CHECK_ENOUGH_MEMORY(buf);
 771
 772     s = buf;
 773     line = buf;
 774
 775     while(!feof(in)) {
 776         size_t size_remaining;
 777         int size_to_get;
 778         WCHAR *s_eol = NULL; /* various local uses */
 779
 780         /* Do we need to expand the buffer ? */
 781         assert (s >= buf && s <= buf + lineSize);
 782         size_remaining = lineSize - (s-buf);
 783         if (size_remaining < 2) /* room for 1 character and the \0 */
 784         {
 785             WCHAR *new_buffer;
 786             size_t new_size = lineSize + (REG_VAL_BUF_SIZE / sizeof(WCHAR));
 787             if (new_size > lineSize) /* no arithmetic overflow */
 788                 new_buffer = HeapReAlloc (GetProcessHeap(), 0, buf, new_size * sizeof(WCHAR));
 789             else
 790                 new_buffer = NULL;
 791             CHECK_ENOUGH_MEMORY(new_buffer);
 792             buf = new_buffer;
 793             line = buf;
 794             s = buf + lineSize - size_remaining;
 795             lineSize = new_size;
 796             size_remaining = lineSize - (s-buf);
 797         }
 798
 799         /* Get as much as possible into the buffer, terminated either by
 800         * eof, error or getting the maximum amount.  Abort on error.
 801         */
 802         size_to_get = (size_remaining > INT_MAX ? INT_MAX : size_remaining);
 803
 804         CharsInBuf = fread(s, sizeof(WCHAR), size_to_get - 1, in);
 805         s[CharsInBuf] = 0;
 806
 807         if (CharsInBuf == 0) {
 808             if (ferror(in)) {
 809                 perror ("While reading input");
 810                 exit (IO_ERROR);
 811             } else {
 812                 assert (feof(in));
 813                 *s = '\0';
 814                 /* It is not clear to me from the definition that the
 815                 * contents of the buffer are well defined on detecting
 816                 * an eof without managing to read anything.
 817                 */
 818             }
 819         }
 820
 821         /* If we didn't read the eol nor the eof go around for the rest */
 822         while(1)
 823         {
 824             const WCHAR line_endings[] = {'\r','\n',0};
 825             s_eol = strpbrkW(line, line_endings);
 826
 827             if(!s_eol) {
 828                 /* Move the stub of the line to the start of the buffer so
 829                  * we get the maximum space to read into, and so we don't
 830                  * have to recalculate 'line' if the buffer expands */
 831                 MoveMemory(buf, line, (strlenW(line)+1) * sizeof(WCHAR));
 832                 line = buf;
 833                 s = strchrW(line, '\0');
 834                 break;
 835             }
 836
 837             /* If it is a comment line then discard it and go around again */
 838             if (*line == '#' || *line == ';') {
 839                 if (*s_eol == '\r' && *(s_eol+1) == '\n')
 840                     line = s_eol + 2;
 841                 else
 842                     line = s_eol + 1;
 843                 continue;
 844             }
 845
 846             /* If there is a concatenating \\ then go around again */
 847             if (*(s_eol-1) == '\\') {
 848                 WCHAR* NextLine = s_eol + 1;
 849
 850                 if(*s_eol == '\r' && *(s_eol+1) == '\n')
 851                     NextLine++;
 852
 853                 while(*(NextLine+1) == ' ' || *(NextLine+1) == '\t')
 854                     NextLine++;
 855
 856                 MoveMemory(s_eol - 1, NextLine, (CharsInBuf - (NextLine - s) + 1)*sizeof(WCHAR));
 857                 CharsInBuf -= NextLine - s_eol + 1;
 858                 s_eol = 0;
 859                 continue;
 860             }
 861
 862             /* Remove any line feed.  Leave s_eol on the last \0 */
 863             if (*s_eol == '\r' && *(s_eol + 1) == '\n')
 864                 *s_eol++ = '\0';
 865             *s_eol = '\0';
 866
 867             processRegEntry(line, TRUE);
 868             line = s_eol + 1;
 869             s_eol = 0;
 870             continue; /* That is the full virtual line */
 871         }
 872     }
 873
 874     processRegEntry(NULL, TRUE);
 875
 876     HeapFree(GetProcessHeap(), 0, buf);
 877 }
 878
 879 /****************************************************************************
 880  * REGPROC_print_error
 881  *
 882  * Print the message for GetLastError
 883  */
 884
 885 static void REGPROC_print_error(void)
 886 {
 887     LPVOID lpMsgBuf;
 888     DWORD error_code;
 889     int status;
 890
 891     error_code = GetLastError ();
 892     status = FormatMessageA(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
 893                             NULL, error_code, 0, (LPSTR) &lpMsgBuf, 0, NULL);
 894     if (!status) {
 895         fprintf(stderr,"%s: Cannot display message for error %d, status %d\n",
 896                 getAppName(), error_code, GetLastError());
 897         exit(1);
 898     }
 899     puts(lpMsgBuf);
 900     LocalFree(lpMsgBuf);
 901     exit(1);
 902 }
 903
 904 /******************************************************************************
 905  * Checks whether the buffer has enough room for the string or required size.
 906  * Resizes the buffer if necessary.
 907  *
 908  * Parameters:
 909  * buffer - pointer to a buffer for string
 910  * len - current length of the buffer in characters.
 911  * required_len - length of the string to place to the buffer in characters.
 912  *   The length does not include the terminating null character.
 913  */
 914 static void REGPROC_resize_char_buffer(WCHAR **buffer, DWORD *len, DWORD required_len)
 915 {
 916     required_len++;
 917     if (required_len > *len) {
 918         *len = required_len;
 919         if (!*buffer)
 920             *buffer = HeapAlloc(GetProcessHeap(), 0, *len * sizeof(**buffer));
 921         else
 922             *buffer = HeapReAlloc(GetProcessHeap(), 0, *buffer, *len * sizeof(**buffer));
 923         CHECK_ENOUGH_MEMORY(*buffer);
 924     }
 925 }
 926
 927 /******************************************************************************
 928  * Same as REGPROC_resize_char_buffer() but on a regular buffer.
 929  *
 930  * Parameters:
 931  * buffer - pointer to a buffer
 932  * len - current size of the buffer in bytes
 933  * required_size - size of the data to place in the buffer in bytes
 934  */
 935 static void REGPROC_resize_binary_buffer(BYTE **buffer, DWORD *size, DWORD required_size)
 936 {
 937     if (required_size > *size) {
 938         *size = required_size;
 939         if (!*buffer)
 940             *buffer = HeapAlloc(GetProcessHeap(), 0, *size);
 941         else
 942             *buffer = HeapReAlloc(GetProcessHeap(), 0, *buffer, *size);
 943         CHECK_ENOUGH_MEMORY(*buffer);
 944     }
 945 }
 946
 947 /******************************************************************************
 948  * Prints string str to file
 949  */
 950 static void REGPROC_export_string(WCHAR **line_buf, DWORD *line_buf_size, DWORD *line_len, WCHAR *str, DWORD str_len)
 951 {
 952     DWORD i, pos;
 953     DWORD extra = 0;
 954
 955     REGPROC_resize_char_buffer(line_buf, line_buf_size, *line_len + str_len + 10);
 956
 957     /* escaping characters */
 958     pos = *line_len;
 959     for (i = 0; i < str_len; i++) {
 960         WCHAR c = str[i];
 961         switch (c) {
 962         case '\n':
 963             extra++;
 964             REGPROC_resize_char_buffer(line_buf, line_buf_size, *line_len + str_len + extra);
 965             (*line_buf)[pos++] = '\\';
 966             (*line_buf)[pos++] = 'n';
 967             break;
 968
 969         case '\r':
 970             extra++;
 971             REGPROC_resize_char_buffer(line_buf, line_buf_size, *line_len + str_len + extra);
 972             (*line_buf)[pos++] = '\\';
 973             (*line_buf)[pos++] = 'r';
 974             break;
 975
 976         case '\\':
 977         case '"':
 978             extra++;
 979             REGPROC_resize_char_buffer(line_buf, line_buf_size, *line_len + str_len + extra);
 980             (*line_buf)[pos++] = '\\';
 981             /* Fall through */
 982
 983         default:
 984             (*line_buf)[pos++] = c;
 985             break;
 986         }
 987     }
 988     (*line_buf)[pos] = '\0';
 989     *line_len = pos;
 990 }
 991
 992 static void REGPROC_export_binary(WCHAR **line_buf, DWORD *line_buf_size, DWORD *line_len, DWORD type, BYTE *value, DWORD value_size, BOOL unicode)
 993 {
 994     DWORD hex_pos, data_pos;
 995     const WCHAR *hex_prefix;
 996     const WCHAR hex[] = {'h','e','x',':',0};
 997     WCHAR hex_buf[17];
 998     const WCHAR concat[] = {'\\','\r','\n',' ',' ',0};
 999     DWORD concat_prefix, concat_len;
1000     const WCHAR newline[] = {'\r','\n',0};
1001     CHAR* value_multibyte = NULL;
1002
1003     if (type == REG_BINARY) {
1004         hex_prefix = hex;
1005     } else {
1006         const WCHAR hex_format[] = {'h','e','x','(','%','x',')',':',0};
1007         hex_prefix = hex_buf;
1008         sprintfW(hex_buf, hex_format, type);
1009         if ((type == REG_SZ || type == REG_EXPAND_SZ || type == REG_MULTI_SZ) && !unicode)
1010         {
1011             value_multibyte = GetMultiByteStringN((WCHAR*)value, value_size / sizeof(WCHAR), &value_size);
1012             value = (BYTE*)value_multibyte;
1013         }
1014     }
1015
1016     concat_len = lstrlenW(concat);
1017     concat_prefix = 2;
1018
1019     hex_pos = *line_len;
1020     *line_len += lstrlenW(hex_prefix);
1021     data_pos = *line_len;
1022     *line_len += value_size * 3;
1023     /* - The 2 spaces that concat places at the start of the
1024      *   line effectively reduce the space available for data.
1025      * - If the value name and hex prefix are very long
1026      *   ( > REG_FILE_HEX_LINE_LEN) or *line_len divides
1027      *   without a remainder then we may overestimate
1028      *   the needed number of lines by one. But that's ok.
1029      * - The trailing '\r' takes the place of a comma so
1030      *   we only need to add 1 for the trailing '\n'
1031      */
1032     *line_len += *line_len / (REG_FILE_HEX_LINE_LEN - concat_prefix) * concat_len + 1;
1033     REGPROC_resize_char_buffer(line_buf, line_buf_size, *line_len);
1034     lstrcpyW(*line_buf + hex_pos, hex_prefix);
1035     if (value_size)
1036     {
1037         const WCHAR format[] = {'%','0','2','x',0};
1038         DWORD i, column;
1039
1040         column = data_pos; /* no line wrap yet */
1041         i = 0;
1042         while (1)
1043         {
1044             sprintfW(*line_buf + data_pos, format, (unsigned int)value[i]);
1045             data_pos += 2;
1046             if (++i == value_size)
1047                 break;
1048
1049             (*line_buf)[data_pos++] = ',';
1050             column += 3;
1051
1052             /* wrap the line */
1053             if (column >= REG_FILE_HEX_LINE_LEN) {
1054                 lstrcpyW(*line_buf + data_pos, concat);
1055                 data_pos += concat_len;
1056                 column = concat_prefix;
1057             }
1058         }
1059     }
1060     lstrcpyW(*line_buf + data_pos, newline);
1061     HeapFree(GetProcessHeap(), 0, value_multibyte);
1062 }
1063
1064 /******************************************************************************
1065  * Writes the given line to a file, in multi-byte or wide characters
1066  */
1067 static void REGPROC_write_line(FILE *file, const WCHAR* str, BOOL unicode)
1068 {
1069     if(unicode)
1070     {
1071         fwrite(str, sizeof(WCHAR), lstrlenW(str), file);
1072     } else
1073     {
1074         char* strA = GetMultiByteString(str);
1075         fputs(strA, file);
1076         HeapFree(GetProcessHeap(), 0, strA);
1077     }
1078 }
1079
1080 /******************************************************************************
1081  * Writes contents of the registry key to the specified file stream.
1082  *
1083  * Parameters:
1084  * file - writable file stream to export registry branch to.
1085  * key - registry branch to export.
1086  * reg_key_name_buf - name of the key with registry class.
1087  *      Is resized if necessary.
1088  * reg_key_name_size - length of the buffer for the registry class in characters.
1089  * val_name_buf - buffer for storing value name.
1090  *      Is resized if necessary.
1091  * val_name_size - length of the buffer for storing value names in characters.
1092  * val_buf - buffer for storing values while extracting.
1093  *      Is resized if necessary.
1094  * val_size - size of the buffer for storing values in bytes.
1095  */
1096 static void export_hkey(FILE *file, HKEY key,
1097                  WCHAR **reg_key_name_buf, DWORD *reg_key_name_size,
1098                  WCHAR **val_name_buf, DWORD *val_name_size,
1099                  BYTE **val_buf, DWORD *val_size,
1100                  WCHAR **line_buf, DWORD *line_buf_size,
1101                  BOOL unicode)
1102 {
1103     DWORD max_sub_key_len;
1104     DWORD max_val_name_len;
1105     DWORD max_val_size;
1106     DWORD curr_len;
1107     DWORD i;
1108     BOOL more_data;
1109     LONG ret;
1110     WCHAR key_format[] = {'\r','\n','[','%','s',']','\r','\n',0};
1111
1112     /* get size information and resize the buffers if necessary */
1113     if (RegQueryInfoKeyW(key, NULL, NULL, NULL, NULL,
1114                         &max_sub_key_len, NULL,
1115                         NULL, &max_val_name_len, &max_val_size, NULL, NULL
1116                        ) != ERROR_SUCCESS) {
1117         REGPROC_print_error();
1118     }
1119     curr_len = strlenW(*reg_key_name_buf);
1120     REGPROC_resize_char_buffer(reg_key_name_buf, reg_key_name_size,
1121                                max_sub_key_len + curr_len + 1);
1122     REGPROC_resize_char_buffer(val_name_buf, val_name_size,
1123                                max_val_name_len);
1124     REGPROC_resize_binary_buffer(val_buf, val_size, max_val_size);
1125     REGPROC_resize_char_buffer(line_buf, line_buf_size, lstrlenW(*reg_key_name_buf) + 4);
1126     /* output data for the current key */
1127     sprintfW(*line_buf, key_format, *reg_key_name_buf);
1128     REGPROC_write_line(file, *line_buf, unicode);
1129
1130     /* print all the values */
1131     i = 0;
1132     more_data = TRUE;
1133     while(more_data) {
1134         DWORD value_type;
1135         DWORD val_name_size1 = *val_name_size;
1136         DWORD val_size1 = *val_size;
1137         ret = RegEnumValueW(key, i, *val_name_buf, &val_name_size1, NULL,
1138                            &value_type, *val_buf, &val_size1);
1139         if (ret == ERROR_MORE_DATA) {
1140             /* Increase the size of the buffers and retry */
1141             REGPROC_resize_char_buffer(val_name_buf, val_name_size, val_name_size1);
1142             REGPROC_resize_binary_buffer(val_buf, val_size, val_size1);
1143         } else if (ret != ERROR_SUCCESS) {
1144             more_data = FALSE;
1145             if (ret != ERROR_NO_MORE_ITEMS) {
1146                 REGPROC_print_error();
1147             }
1148         } else {
1149             DWORD line_len;
1150             i++;
1151
1152             if ((*val_name_buf)[0]) {
1153                 const WCHAR val_start[] = {'"','%','s','"','=',0};
1154
1155                 line_len = 0;
1156                 REGPROC_export_string(line_buf, line_buf_size, &line_len, *val_name_buf, lstrlenW(*val_name_buf));
1157                 REGPROC_resize_char_buffer(val_name_buf, val_name_size, lstrlenW(*line_buf) + 1);
1158                 lstrcpyW(*val_name_buf, *line_buf);
1159
1160                 line_len = 3 + lstrlenW(*val_name_buf);
1161                 REGPROC_resize_char_buffer(line_buf, line_buf_size, line_len);
1162                 sprintfW(*line_buf, val_start, *val_name_buf);
1163             } else {
1164                 const WCHAR std_val[] = {'@','=',0};
1165                 line_len = 2;
1166                 REGPROC_resize_char_buffer(line_buf, line_buf_size, line_len);
1167                 lstrcpyW(*line_buf, std_val);
1168             }
1169
1170             switch (value_type) {
1171             case REG_SZ:
1172             {
1173                 WCHAR* wstr = (WCHAR*)*val_buf;
1174
1175                 if (val_size1 < sizeof(WCHAR) || val_size1 % sizeof(WCHAR) ||
1176                     wstr[val_size1 / sizeof(WCHAR) - 1]) {
1177                     REGPROC_export_binary(line_buf, line_buf_size, &line_len, value_type, *val_buf, val_size1, unicode);
1178                 } else {
1179                     const WCHAR start[] = {'"',0};
1180                     const WCHAR end[] = {'"','\r','\n',0};
1181                     DWORD len;
1182
1183                     len = lstrlenW(start);
1184                     REGPROC_resize_char_buffer(line_buf, line_buf_size, line_len + len);
1185                     lstrcpyW(*line_buf + line_len, start);
1186                     line_len += len;
1187
1188                     REGPROC_export_string(line_buf, line_buf_size, &line_len, wstr, lstrlenW(wstr));
1189
1190                     REGPROC_resize_char_buffer(line_buf, line_buf_size, line_len + lstrlenW(end));
1191                     lstrcpyW(*line_buf + line_len, end);
1192                 }
1193                 break;
1194             }
1195
1196             case REG_DWORD:
1197             {
1198                 WCHAR format[] = {'d','w','o','r','d',':','%','0','8','x','\r','\n',0};
1199
1200                 REGPROC_resize_char_buffer(line_buf, line_buf_size, line_len + 15);
1201                 sprintfW(*line_buf + line_len, format, *((DWORD *)*val_buf));
1202                 break;
1203             }
1204
1205             default:
1206             {
1207                 char* key_nameA = GetMultiByteString(*reg_key_name_buf);
1208                 char* value_nameA = GetMultiByteString(*val_name_buf);
1209                 fprintf(stderr,"%s: warning - unsupported registry format '%d', "
1210                         "treat as binary\n",
1211                         getAppName(), value_type);
1212                 fprintf(stderr,"key name: \"%s\"\n", key_nameA);
1213                 fprintf(stderr,"value name:\"%s\"\n\n", value_nameA);
1214                 HeapFree(GetProcessHeap(), 0, key_nameA);
1215                 HeapFree(GetProcessHeap(), 0, value_nameA);
1216             }
1217                 /* falls through */
1218             case REG_EXPAND_SZ:
1219             case REG_MULTI_SZ:
1220                 /* falls through */
1221             case REG_BINARY:
1222                 REGPROC_export_binary(line_buf, line_buf_size, &line_len, value_type, *val_buf, val_size1, unicode);
1223             }
1224             REGPROC_write_line(file, *line_buf, unicode);
1225         }
1226     }
1227
1228     i = 0;
1229     more_data = TRUE;
1230     (*reg_key_name_buf)[curr_len] = '\\';
1231     while(more_data) {
1232         DWORD buf_size = *reg_key_name_size - curr_len - 1;
1233
1234         ret = RegEnumKeyExW(key, i, *reg_key_name_buf + curr_len + 1, &buf_size,
1235                            NULL, NULL, NULL, NULL);
1236         if (ret == ERROR_MORE_DATA) {
1237             /* Increase the size of the buffer and retry */
1238             REGPROC_resize_char_buffer(reg_key_name_buf, reg_key_name_size, curr_len + 1 + buf_size);
1239         } else if (ret != ERROR_SUCCESS) {
1240             more_data = FALSE;
1241             if (ret != ERROR_NO_MORE_ITEMS) {
1242                 REGPROC_print_error();
1243             }
1244         } else {
1245             HKEY subkey;
1246
1247             i++;
1248             if (RegOpenKeyW(key, *reg_key_name_buf + curr_len + 1,
1249                            &subkey) == ERROR_SUCCESS) {
1250                 export_hkey(file, subkey, reg_key_name_buf, reg_key_name_size,
1251                             val_name_buf, val_name_size, val_buf, val_size,
1252                             line_buf, line_buf_size, unicode);
1253                 RegCloseKey(subkey);
1254             } else {
1255                 REGPROC_print_error();
1256             }
1257         }
1258     }
1259     (*reg_key_name_buf)[curr_len] = '\0';
1260 }
1261
1262 /******************************************************************************
1263  * Open file in binary mode for export.
1264  */
1265 static FILE *REGPROC_open_export_file(WCHAR *file_name, BOOL unicode)
1266 {
1267     FILE *file;
1268     WCHAR dash = '-';
1269
1270     if (strncmpW(file_name,&dash,1)==0) {
1271         file=stdout;
1272         _setmode(_fileno(file), _O_BINARY);
1273     } else
1274     {
1275         CHAR* file_nameA = GetMultiByteString(file_name);
1276         file = fopen(file_nameA, "wb");
1277         if (!file) {
1278             perror("");
1279             fprintf(stderr,"%s: Can't open file \"%s\"\n", getAppName(), file_nameA);
1280             HeapFree(GetProcessHeap(), 0, file_nameA);
1281             exit(1);
1282         }
1283         HeapFree(GetProcessHeap(), 0, file_nameA);
1284     }
1285     if(unicode)
1286     {
1287         const BYTE unicode_seq[] = {0xff,0xfe};
1288         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'};
1289         fwrite(unicode_seq, sizeof(BYTE), sizeof(unicode_seq)/sizeof(unicode_seq[0]), file);
1290         fwrite(header, sizeof(WCHAR), sizeof(header)/sizeof(header[0]), file);
1291     } else
1292     {
1293         fputs("REGEDIT4\r\n", file);
1294     }
1295
1296     return file;
1297 }
1298
1299 /******************************************************************************
1300  * Writes contents of the registry key to the specified file stream.
1301  *
1302  * Parameters:
1303  * file_name - name of a file to export registry branch to.
1304  * reg_key_name - registry branch to export. The whole registry is exported if
1305  *      reg_key_name is NULL or contains an empty string.
1306  */
1307 BOOL export_registry_key(WCHAR *file_name, WCHAR *reg_key_name, DWORD format)
1308 {
1309     WCHAR *reg_key_name_buf;
1310     WCHAR *val_name_buf;
1311     BYTE *val_buf;
1312     WCHAR *line_buf;
1313     DWORD reg_key_name_size = KEY_MAX_LEN;
1314     DWORD val_name_size = KEY_MAX_LEN;
1315     DWORD val_size = REG_VAL_BUF_SIZE;
1316     DWORD line_buf_size = KEY_MAX_LEN + REG_VAL_BUF_SIZE;
1317     FILE *file = NULL;
1318     BOOL unicode = (format == REG_FORMAT_5);
1319
1320     reg_key_name_buf = HeapAlloc(GetProcessHeap(), 0,
1321                                  reg_key_name_size  * sizeof(*reg_key_name_buf));
1322     val_name_buf = HeapAlloc(GetProcessHeap(), 0,
1323                              val_name_size * sizeof(*val_name_buf));
1324     val_buf = HeapAlloc(GetProcessHeap(), 0, val_size);
1325     line_buf = HeapAlloc(GetProcessHeap(), 0, line_buf_size * sizeof(*line_buf));
1326     CHECK_ENOUGH_MEMORY(reg_key_name_buf && val_name_buf && val_buf && line_buf);
1327
1328     if (reg_key_name && reg_key_name[0]) {
1329         HKEY reg_key_class;
1330         WCHAR *branch_name = NULL;
1331         HKEY key;
1332
1333         REGPROC_resize_char_buffer(&reg_key_name_buf, &reg_key_name_size,
1334                                    lstrlenW(reg_key_name));
1335         lstrcpyW(reg_key_name_buf, reg_key_name);
1336
1337         /* open the specified key */
1338         if (!parseKeyName(reg_key_name, &reg_key_class, &branch_name)) {
1339             CHAR* key_nameA = GetMultiByteString(reg_key_name);
1340             fprintf(stderr,"%s: Incorrect registry class specification in '%s'\n",
1341                     getAppName(), key_nameA);
1342             HeapFree(GetProcessHeap(), 0, key_nameA);
1343             exit(1);
1344         }
1345         if (!branch_name[0]) {
1346             /* no branch - registry class is specified */
1347             file = REGPROC_open_export_file(file_name, unicode);
1348             export_hkey(file, reg_key_class,
1349                         &reg_key_name_buf, &reg_key_name_size,
1350                         &val_name_buf, &val_name_size,
1351                         &val_buf, &val_size, &line_buf,
1352                         &line_buf_size, unicode);
1353         } else if (RegOpenKeyW(reg_key_class, branch_name, &key) == ERROR_SUCCESS) {
1354             file = REGPROC_open_export_file(file_name, unicode);
1355             export_hkey(file, key,
1356                         &reg_key_name_buf, &reg_key_name_size,
1357                         &val_name_buf, &val_name_size,
1358                         &val_buf, &val_size, &line_buf,
1359                         &line_buf_size, unicode);
1360             RegCloseKey(key);
1361         } else {
1362             CHAR* key_nameA = GetMultiByteString(reg_key_name);
1363             fprintf(stderr,"%s: Can't export. Registry key '%s' does not exist!\n",
1364                     getAppName(), key_nameA);
1365             HeapFree(GetProcessHeap(), 0, key_nameA);
1366             REGPROC_print_error();
1367         }
1368     } else {
1369         unsigned int i;
1370
1371         /* export all registry classes */
1372         file = REGPROC_open_export_file(file_name, unicode);
1373         for (i = 0; i < REG_CLASS_NUMBER; i++) {
1374             /* do not export HKEY_CLASSES_ROOT */
1375             if (reg_class_keys[i] != HKEY_CLASSES_ROOT &&
1376                     reg_class_keys[i] != HKEY_CURRENT_USER &&
1377                     reg_class_keys[i] != HKEY_CURRENT_CONFIG &&
1378                     reg_class_keys[i] != HKEY_DYN_DATA) {
1379                 lstrcpyW(reg_key_name_buf, reg_class_namesW[i]);
1380                 export_hkey(file, reg_class_keys[i],
1381                             &reg_key_name_buf, &reg_key_name_size,
1382                             &val_name_buf, &val_name_size,
1383                             &val_buf, &val_size, &line_buf,
1384                             &line_buf_size, unicode);
1385             }
1386         }
1387     }
1388
1389     if (file) {
1390         fclose(file);
1391     }
1392     HeapFree(GetProcessHeap(), 0, reg_key_name);
1393     HeapFree(GetProcessHeap(), 0, val_name_buf);
1394     HeapFree(GetProcessHeap(), 0, val_buf);
1395     HeapFree(GetProcessHeap(), 0, line_buf);
1396     return TRUE;
1397 }
1398
1399 /******************************************************************************
1400  * Reads contents of the specified file into the registry.
1401  */
1402 BOOL import_registry_file(FILE* reg_file)
1403 {
1404     if (reg_file)
1405     {
1406         BYTE s[2];
1407         if (fread( s, 2, 1, reg_file) == 1)
1408         {
1409             if (s[0] == 0xff && s[1] == 0xfe)
1410             {
1411                 processRegLinesW(reg_file);
1412             } else
1413             {
1414                 processRegLinesA(reg_file, (char*)s);
1415             }
1416         }
1417         return TRUE;
1418     }
1419     return FALSE;
1420 }
1421
1422 /******************************************************************************
1423  * Removes the registry key with all subkeys. Parses full key name.
1424  *
1425  * Parameters:
1426  * reg_key_name - full name of registry branch to delete. Ignored if is NULL,
1427  *      empty, points to register key class, does not exist.
1428  */
1429 void delete_registry_key(WCHAR *reg_key_name)
1430 {
1431     WCHAR *key_name = NULL;
1432     HKEY key_class;
1433
1434     if (!reg_key_name || !reg_key_name[0])
1435         return;
1436
1437     if (!parseKeyName(reg_key_name, &key_class, &key_name)) {
1438         char* reg_key_nameA = GetMultiByteString(reg_key_name);
1439         fprintf(stderr,"%s: Incorrect registry class specification in '%s'\n",
1440                 getAppName(), reg_key_nameA);
1441         HeapFree(GetProcessHeap(), 0, reg_key_nameA);
1442         exit(1);
1443     }
1444     if (!*key_name) {
1445         char* reg_key_nameA = GetMultiByteString(reg_key_name);
1446         fprintf(stderr,"%s: Can't delete registry class '%s'\n",
1447                 getAppName(), reg_key_nameA);
1448         HeapFree(GetProcessHeap(), 0, reg_key_nameA);
1449         exit(1);
1450     }
1451
1452     RegDeleteTreeW(key_class, key_name);
1453 }