[REG] Sync with Wine Staging 3.9. CORE-14656
[reactos.git] / base / applications / cmdutils / reg / import.c
1 /*
2 * Copyright 2017 Hugh McMaster
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
17 */
18
19 #include <windows.h>
20 #include <errno.h>
21 #include <stdio.h>
22 #include <stdlib.h>
23
24 #include <wine/unicode.h>
25 #include <wine/debug.h>
26 #include <wine/heap.h>
27
28 #include "reg.h"
29
30 WINE_DEFAULT_DEBUG_CHANNEL(reg);
31
32 static WCHAR *GetWideString(const char *strA)
33 {
34 if (strA)
35 {
36 WCHAR *strW;
37 int len = MultiByteToWideChar(CP_ACP, 0, strA, -1, NULL, 0);
38
39 strW = heap_xalloc(len * sizeof(WCHAR));
40 MultiByteToWideChar(CP_ACP, 0, strA, -1, strW, len);
41 return strW;
42 }
43 return NULL;
44 }
45
46 static WCHAR *GetWideStringN(const char *strA, int size, DWORD *len)
47 {
48 if (strA)
49 {
50 WCHAR *strW;
51 *len = MultiByteToWideChar(CP_ACP, 0, strA, size, NULL, 0);
52
53 strW = heap_xalloc(*len * sizeof(WCHAR));
54 MultiByteToWideChar(CP_ACP, 0, strA, size, strW, *len);
55 return strW;
56 }
57 *len = 0;
58 return NULL;
59 }
60
61 static WCHAR *(*get_line)(FILE *);
62
63 /* parser definitions */
64 enum parser_state
65 {
66 HEADER, /* parsing the registry file version header */
67 PARSE_WIN31_LINE, /* parsing a Windows 3.1 registry line */
68 LINE_START, /* at the beginning of a registry line */
69 KEY_NAME, /* parsing a key name */
70 DELETE_KEY, /* deleting a registry key */
71 DEFAULT_VALUE_NAME, /* parsing a default value name */
72 QUOTED_VALUE_NAME, /* parsing a double-quoted value name */
73 DATA_START, /* preparing for data parsing operations */
74 DELETE_VALUE, /* deleting a registry value */
75 DATA_TYPE, /* parsing the registry data type */
76 STRING_DATA, /* parsing REG_SZ data */
77 DWORD_DATA, /* parsing DWORD data */
78 HEX_DATA, /* parsing REG_BINARY, REG_NONE, REG_EXPAND_SZ or REG_MULTI_SZ data */
79 EOL_BACKSLASH, /* preparing to parse multiple lines of hex data */
80 HEX_MULTILINE, /* parsing multiple lines of hex data */
81 UNKNOWN_DATA, /* parsing an unhandled or invalid data type */
82 SET_VALUE, /* adding a value to the registry */
83 NB_PARSER_STATES
84 };
85
86 struct parser
87 {
88 FILE *file; /* pointer to a registry file */
89 WCHAR two_wchars[2]; /* first two characters from the encoding check */
90 BOOL is_unicode; /* parsing Unicode or ASCII data */
91 short int reg_version; /* registry file version */
92 HKEY hkey; /* current registry key */
93 WCHAR *key_name; /* current key name */
94 WCHAR *value_name; /* value name */
95 DWORD parse_type; /* generic data type for parsing */
96 DWORD data_type; /* data type */
97 void *data; /* value data */
98 DWORD data_size; /* size of the data (in bytes) */
99 BOOL backslash; /* TRUE if the current line contains a backslash */
100 enum parser_state state; /* current parser state */
101 };
102
103 typedef WCHAR *(*parser_state_func)(struct parser *parser, WCHAR *pos);
104
105 /* parser state machine functions */
106 static WCHAR *header_state(struct parser *parser, WCHAR *pos);
107 static WCHAR *parse_win31_line_state(struct parser *parser, WCHAR *pos);
108 static WCHAR *line_start_state(struct parser *parser, WCHAR *pos);
109 static WCHAR *key_name_state(struct parser *parser, WCHAR *pos);
110 static WCHAR *delete_key_state(struct parser *parser, WCHAR *pos);
111 static WCHAR *default_value_name_state(struct parser *parser, WCHAR *pos);
112 static WCHAR *quoted_value_name_state(struct parser *parser, WCHAR *pos);
113 static WCHAR *data_start_state(struct parser *parser, WCHAR *pos);
114 static WCHAR *delete_value_state(struct parser *parser, WCHAR *pos);
115 static WCHAR *data_type_state(struct parser *parser, WCHAR *pos);
116 static WCHAR *string_data_state(struct parser *parser, WCHAR *pos);
117 static WCHAR *dword_data_state(struct parser *parser, WCHAR *pos);
118 static WCHAR *hex_data_state(struct parser *parser, WCHAR *pos);
119 static WCHAR *eol_backslash_state(struct parser *parser, WCHAR *pos);
120 static WCHAR *hex_multiline_state(struct parser *parser, WCHAR *pos);
121 static WCHAR *unknown_data_state(struct parser *parser, WCHAR *pos);
122 static WCHAR *set_value_state(struct parser *parser, WCHAR *pos);
123
124 static const parser_state_func parser_funcs[NB_PARSER_STATES] =
125 {
126 header_state, /* HEADER */
127 parse_win31_line_state, /* PARSE_WIN31_LINE */
128 line_start_state, /* LINE_START */
129 key_name_state, /* KEY_NAME */
130 delete_key_state, /* DELETE_KEY */
131 default_value_name_state, /* DEFAULT_VALUE_NAME */
132 quoted_value_name_state, /* QUOTED_VALUE_NAME */
133 data_start_state, /* DATA_START */
134 delete_value_state, /* DELETE_VALUE */
135 data_type_state, /* DATA_TYPE */
136 string_data_state, /* STRING_DATA */
137 dword_data_state, /* DWORD_DATA */
138 hex_data_state, /* HEX_DATA */
139 eol_backslash_state, /* EOL_BACKSLASH */
140 hex_multiline_state, /* HEX_MULTILINE */
141 unknown_data_state, /* UNKNOWN_DATA */
142 set_value_state, /* SET_VALUE */
143 };
144
145 /* set the new parser state and return the previous one */
146 static inline enum parser_state set_state(struct parser *parser, enum parser_state state)
147 {
148 enum parser_state ret = parser->state;
149 parser->state = state;
150 return ret;
151 }
152
153 /******************************************************************************
154 * Converts a hex representation of a DWORD into a DWORD.
155 */
156 static BOOL convert_hex_to_dword(WCHAR *str, DWORD *dw)
157 {
158 WCHAR *p, *end;
159 int count = 0;
160
161 while (*str == ' ' || *str == '\t') str++;
162 if (!*str) goto error;
163
164 p = str;
165 while (isxdigitW(*p))
166 {
167 count++;
168 p++;
169 }
170 if (count > 8) goto error;
171
172 end = p;
173 while (*p == ' ' || *p == '\t') p++;
174 if (*p && *p != ';') goto error;
175
176 *end = 0;
177 *dw = strtoulW(str, &end, 16);
178 return TRUE;
179
180 error:
181 return FALSE;
182 }
183
184 /******************************************************************************
185 * Converts comma-separated hex data into a binary string and modifies
186 * the input parameter to skip the concatenating backslash, if found.
187 *
188 * Returns TRUE or FALSE to indicate whether parsing was successful.
189 */
190 static BOOL convert_hex_csv_to_hex(struct parser *parser, WCHAR **str)
191 {
192 size_t size;
193 BYTE *d;
194 WCHAR *s;
195
196 parser->backslash = FALSE;
197
198 /* The worst case is 1 digit + 1 comma per byte */
199 size = ((lstrlenW(*str) + 1) / 2) + parser->data_size;
200 parser->data = heap_xrealloc(parser->data, size);
201
202 s = *str;
203 d = (BYTE *)parser->data + parser->data_size;
204
205 while (*s)
206 {
207 WCHAR *end;
208 unsigned long wc;
209
210 wc = strtoulW(s, &end, 16);
211 if (wc > 0xff) return FALSE;
212
213 if (s == end && wc == 0)
214 {
215 while (*end == ' ' || *end == '\t') end++;
216 if (*end == '\\')
217 {
218 parser->backslash = TRUE;
219 *str = end + 1;
220 return TRUE;
221 }
222 else if (*end == ';')
223 return TRUE;
224 return FALSE;
225 }
226
227 *d++ = wc;
228 parser->data_size++;
229
230 if (*end && *end != ',')
231 {
232 while (*end == ' ' || *end == '\t') end++;
233 if (*end && *end != ';') return FALSE;
234 return TRUE;
235 }
236
237 if (*end) end++;
238 s = end;
239 }
240
241 return TRUE;
242 }
243
244 /******************************************************************************
245 * Parses the data type of the registry value being imported and modifies
246 * the input parameter to skip the string representation of the data type.
247 *
248 * Returns TRUE or FALSE to indicate whether a data type was found.
249 */
250 static BOOL parse_data_type(struct parser *parser, WCHAR **line)
251 {
252 struct data_type { const WCHAR *tag; int len; int type; int parse_type; };
253
254 static const WCHAR quote[] = {'"'};
255 static const WCHAR hex[] = {'h','e','x',':'};
256 static const WCHAR dword[] = {'d','w','o','r','d',':'};
257 static const WCHAR hexp[] = {'h','e','x','('};
258
259 static const struct data_type data_types[] = {
260 /* tag len type parse type */
261 { quote, 1, REG_SZ, REG_SZ },
262 { hex, 4, REG_BINARY, REG_BINARY },
263 { dword, 6, REG_DWORD, REG_DWORD },
264 { hexp, 4, -1, REG_BINARY }, /* REG_NONE, REG_EXPAND_SZ, REG_MULTI_SZ */
265 { NULL, 0, 0, 0 }
266 };
267
268 const struct data_type *ptr;
269
270 for (ptr = data_types; ptr->tag; ptr++)
271 {
272 if (strncmpW(ptr->tag, *line, ptr->len))
273 continue;
274
275 parser->parse_type = ptr->parse_type;
276 parser->data_type = ptr->parse_type;
277 *line += ptr->len;
278
279 if (ptr->type == -1)
280 {
281 WCHAR *end;
282 DWORD val;
283
284 if (!**line || tolowerW((*line)[1]) == 'x')
285 return FALSE;
286
287 /* "hex(xx):" is special */
288 val = wcstoul(*line, &end, 16);
289 if (*end != ')' || *(end + 1) != ':' || (val == ~0u && errno == ERANGE))
290 return FALSE;
291
292 parser->data_type = val;
293 *line = end + 2;
294 }
295 return TRUE;
296 }
297 return FALSE;
298 }
299
300 /******************************************************************************
301 * Replaces escape sequences with their character equivalents and
302 * null-terminates the string on the first non-escaped double quote.
303 *
304 * Assigns a pointer to the remaining unparsed data in the line.
305 * Returns TRUE or FALSE to indicate whether a closing double quote was found.
306 */
307 static BOOL unescape_string(WCHAR *str, WCHAR **unparsed)
308 {
309 int str_idx = 0; /* current character under analysis */
310 int val_idx = 0; /* the last character of the unescaped string */
311 int len = lstrlenW(str);
312 BOOL ret;
313
314 for (str_idx = 0; str_idx < len; str_idx++, val_idx++)
315 {
316 if (str[str_idx] == '\\')
317 {
318 str_idx++;
319 switch (str[str_idx])
320 {
321 case 'n':
322 str[val_idx] = '\n';
323 break;
324 case 'r':
325 str[val_idx] = '\r';
326 break;
327 case '0':
328 str[val_idx] = '\0';
329 break;
330 case '\\':
331 case '"':
332 str[val_idx] = str[str_idx];
333 break;
334 default:
335 if (!str[str_idx]) return FALSE;
336 output_message(STRING_ESCAPE_SEQUENCE, str[str_idx]);
337 str[val_idx] = str[str_idx];
338 break;
339 }
340 }
341 else if (str[str_idx] == '"')
342 break;
343 else
344 str[val_idx] = str[str_idx];
345 }
346
347 ret = (str[str_idx] == '"');
348 *unparsed = str + str_idx + 1;
349 str[val_idx] = '\0';
350 return ret;
351 }
352
353 static HKEY parse_key_name(WCHAR *key_name, WCHAR **key_path)
354 {
355 if (!key_name) return 0;
356
357 *key_path = strchrW(key_name, '\\');
358 if (*key_path) (*key_path)++;
359
360 return path_get_rootkey(key_name);
361 }
362
363 static void close_key(struct parser *parser)
364 {
365 if (parser->hkey)
366 {
367 heap_free(parser->key_name);
368 parser->key_name = NULL;
369
370 RegCloseKey(parser->hkey);
371 parser->hkey = NULL;
372 }
373 }
374
375 static LONG open_key(struct parser *parser, WCHAR *path)
376 {
377 HKEY key_class;
378 WCHAR *key_path;
379 LONG res;
380
381 close_key(parser);
382
383 /* Get the registry class */
384 if (!path || !(key_class = parse_key_name(path, &key_path)))
385 return ERROR_INVALID_PARAMETER;
386
387 res = RegCreateKeyExW(key_class, key_path, 0, NULL, REG_OPTION_NON_VOLATILE,
388 KEY_ALL_ACCESS, NULL, &parser->hkey, NULL);
389
390 if (res == ERROR_SUCCESS)
391 {
392 parser->key_name = heap_xalloc((lstrlenW(path) + 1) * sizeof(WCHAR));
393 lstrcpyW(parser->key_name, path);
394 }
395 else
396 parser->hkey = NULL;
397
398 return res;
399 }
400
401 static void free_parser_data(struct parser *parser)
402 {
403 if (parser->parse_type == REG_DWORD || parser->parse_type == REG_BINARY)
404 heap_free(parser->data);
405
406 parser->data = NULL;
407 parser->data_size = 0;
408 }
409
410 static void prepare_hex_string_data(struct parser *parser)
411 {
412 if (parser->data_type == REG_EXPAND_SZ || parser->data_type == REG_MULTI_SZ ||
413 parser->data_type == REG_SZ)
414 {
415 if (parser->is_unicode)
416 {
417 WCHAR *data = parser->data;
418 DWORD len = parser->data_size / sizeof(WCHAR);
419
420 if (data[len - 1] != 0)
421 {
422 data[len] = 0;
423 parser->data_size += sizeof(WCHAR);
424 }
425 }
426 else
427 {
428 BYTE *data = parser->data;
429
430 if (data[parser->data_size - 1] != 0)
431 {
432 data[parser->data_size] = 0;
433 parser->data_size++;
434 }
435
436 parser->data = GetWideStringN(parser->data, parser->data_size, &parser->data_size);
437 parser->data_size *= sizeof(WCHAR);
438 heap_free(data);
439 }
440 }
441 }
442
443 enum reg_versions {
444 REG_VERSION_31,
445 REG_VERSION_40,
446 REG_VERSION_50,
447 REG_VERSION_FUZZY,
448 REG_VERSION_INVALID
449 };
450
451 static enum reg_versions parse_file_header(const WCHAR *s)
452 {
453 static const WCHAR header_31[] = {'R','E','G','E','D','I','T',0};
454 static const WCHAR header_40[] = {'R','E','G','E','D','I','T','4',0};
455 static const WCHAR header_50[] = {'W','i','n','d','o','w','s',' ',
456 'R','e','g','i','s','t','r','y',' ','E','d','i','t','o','r',' ',
457 'V','e','r','s','i','o','n',' ','5','.','0','0',0};
458
459 while (*s == ' ' || *s == '\t') s++;
460
461 if (!strcmpW(s, header_31))
462 return REG_VERSION_31;
463
464 if (!strcmpW(s, header_40))
465 return REG_VERSION_40;
466
467 if (!strcmpW(s, header_50))
468 return REG_VERSION_50;
469
470 /* The Windows version accepts registry file headers beginning with "REGEDIT" and ending
471 * with other characters, as long as "REGEDIT" appears at the start of the line. For example,
472 * "REGEDIT 4", "REGEDIT9" and "REGEDIT4FOO" are all treated as valid file headers.
473 * In all such cases, however, the contents of the registry file are not imported.
474 */
475 if (!strncmpW(s, header_31, 7)) /* "REGEDIT" without NUL */
476 return REG_VERSION_FUZZY;
477
478 return REG_VERSION_INVALID;
479 }
480
481 /* handler for parser HEADER state */
482 static WCHAR *header_state(struct parser *parser, WCHAR *pos)
483 {
484 WCHAR *line, *header;
485
486 if (!(line = get_line(parser->file)))
487 return NULL;
488
489 if (!parser->is_unicode)
490 {
491 header = heap_xalloc((lstrlenW(line) + 3) * sizeof(WCHAR));
492 header[0] = parser->two_wchars[0];
493 header[1] = parser->two_wchars[1];
494 lstrcpyW(header + 2, line);
495 parser->reg_version = parse_file_header(header);
496 heap_free(header);
497 }
498 else parser->reg_version = parse_file_header(line);
499
500 switch (parser->reg_version)
501 {
502 case REG_VERSION_31:
503 set_state(parser, PARSE_WIN31_LINE);
504 break;
505 case REG_VERSION_40:
506 case REG_VERSION_50:
507 set_state(parser, LINE_START);
508 break;
509 default:
510 get_line(NULL); /* Reset static variables */
511 return NULL;
512 }
513
514 return line;
515 }
516
517 /* handler for parser PARSE_WIN31_LINE state */
518 static WCHAR *parse_win31_line_state(struct parser *parser, WCHAR *pos)
519 {
520 WCHAR *line, *value;
521 static WCHAR hkcr[] = {'H','K','E','Y','_','C','L','A','S','S','E','S','_','R','O','O','T'};
522 unsigned int key_end = 0;
523
524 if (!(line = get_line(parser->file)))
525 return NULL;
526
527 if (strncmpW(line, hkcr, ARRAY_SIZE(hkcr)))
528 return line;
529
530 /* get key name */
531 while (line[key_end] && !isspaceW(line[key_end])) key_end++;
532
533 value = line + key_end;
534 while (*value == ' ' || *value == '\t') value++;
535
536 if (*value == '=') value++;
537 if (*value == ' ') value++; /* at most one space is skipped */
538
539 line[key_end] = 0;
540
541 if (open_key(parser, line) != ERROR_SUCCESS)
542 {
543 output_message(STRING_OPEN_KEY_FAILED, line);
544 return line;
545 }
546
547 parser->value_name = NULL;
548 parser->data_type = REG_SZ;
549 parser->data = value;
550 parser->data_size = (lstrlenW(value) + 1) * sizeof(WCHAR);
551
552 set_state(parser, SET_VALUE);
553 return value;
554 }
555
556 /* handler for parser LINE_START state */
557 static WCHAR *line_start_state(struct parser *parser, WCHAR *pos)
558 {
559 WCHAR *line, *p;
560
561 if (!(line = get_line(parser->file)))
562 return NULL;
563
564 for (p = line; *p; p++)
565 {
566 switch (*p)
567 {
568 case '[':
569 set_state(parser, KEY_NAME);
570 return p + 1;
571 case '@':
572 set_state(parser, DEFAULT_VALUE_NAME);
573 return p;
574 case '"':
575 set_state(parser, QUOTED_VALUE_NAME);
576 return p + 1;
577 case ' ':
578 case '\t':
579 break;
580 default:
581 return p;
582 }
583 }
584
585 return p;
586 }
587
588 /* handler for parser KEY_NAME state */
589 static WCHAR *key_name_state(struct parser *parser, WCHAR *pos)
590 {
591 WCHAR *p = pos, *key_end;
592
593 if (*p == ' ' || *p == '\t' || !(key_end = strrchrW(p, ']')))
594 goto done;
595
596 *key_end = 0;
597
598 if (*p == '-')
599 {
600 set_state(parser, DELETE_KEY);
601 return p + 1;
602 }
603 else if (open_key(parser, p) != ERROR_SUCCESS)
604 output_message(STRING_OPEN_KEY_FAILED, p);
605
606 done:
607 set_state(parser, LINE_START);
608 return p;
609 }
610
611 /* handler for parser DELETE_KEY state */
612 static WCHAR *delete_key_state(struct parser *parser, WCHAR *pos)
613 {
614 WCHAR *p = pos;
615
616 close_key(parser);
617
618 if (*p == 'H' || *p == 'h')
619 {
620 HKEY root;
621 WCHAR *path;
622
623 root = parse_key_name(p, &path);
624
625 if (root && path && *path)
626 RegDeleteTreeW(root, path);
627 }
628
629 set_state(parser, LINE_START);
630 return p;
631 }
632
633 /* handler for parser DEFAULT_VALUE_NAME state */
634 static WCHAR *default_value_name_state(struct parser *parser, WCHAR *pos)
635 {
636 heap_free(parser->value_name);
637 parser->value_name = NULL;
638
639 set_state(parser, DATA_START);
640 return pos + 1;
641 }
642
643 /* handler for parser QUOTED_VALUE_NAME state */
644 static WCHAR *quoted_value_name_state(struct parser *parser, WCHAR *pos)
645 {
646 WCHAR *val_name = pos, *p;
647
648 if (parser->value_name)
649 {
650 heap_free(parser->value_name);
651 parser->value_name = NULL;
652 }
653
654 if (!unescape_string(val_name, &p))
655 goto invalid;
656
657 /* copy the value name in case we need to parse multiple lines and the buffer is overwritten */
658 parser->value_name = heap_xalloc((lstrlenW(val_name) + 1) * sizeof(WCHAR));
659 lstrcpyW(parser->value_name, val_name);
660
661 set_state(parser, DATA_START);
662 return p;
663
664 invalid:
665 set_state(parser, LINE_START);
666 return val_name;
667 }
668
669 /* handler for parser DATA_START state */
670 static WCHAR *data_start_state(struct parser *parser, WCHAR *pos)
671 {
672 WCHAR *p = pos;
673 unsigned int len;
674
675 while (*p == ' ' || *p == '\t') p++;
676 if (*p != '=') goto invalid;
677 p++;
678 while (*p == ' ' || *p == '\t') p++;
679
680 /* trim trailing whitespace */
681 len = strlenW(p);
682 while (len > 0 && (p[len - 1] == ' ' || p[len - 1] == '\t')) len--;
683 p[len] = 0;
684
685 if (*p == '-')
686 set_state(parser, DELETE_VALUE);
687 else
688 set_state(parser, DATA_TYPE);
689 return p;
690
691 invalid:
692 set_state(parser, LINE_START);
693 return p;
694 }
695
696 /* handler for parser DELETE_VALUE state */
697 static WCHAR *delete_value_state(struct parser *parser, WCHAR *pos)
698 {
699 WCHAR *p = pos + 1;
700
701 while (*p == ' ' || *p == '\t') p++;
702 if (*p && *p != ';') goto done;
703
704 RegDeleteValueW(parser->hkey, parser->value_name);
705
706 done:
707 set_state(parser, LINE_START);
708 return p;
709 }
710
711 /* handler for parser DATA_TYPE state */
712 static WCHAR *data_type_state(struct parser *parser, WCHAR *pos)
713 {
714 WCHAR *line = pos;
715
716 if (!parse_data_type(parser, &line))
717 {
718 set_state(parser, LINE_START);
719 return line;
720 }
721
722 switch (parser->parse_type)
723 {
724 case REG_SZ:
725 set_state(parser, STRING_DATA);
726 break;
727 case REG_DWORD:
728 set_state(parser, DWORD_DATA);
729 break;
730 case REG_BINARY: /* all hex data types, including undefined */
731 set_state(parser, HEX_DATA);
732 break;
733 default:
734 set_state(parser, UNKNOWN_DATA);
735 }
736
737 return line;
738 }
739
740 /* handler for parser STRING_DATA state */
741 static WCHAR *string_data_state(struct parser *parser, WCHAR *pos)
742 {
743 WCHAR *line;
744
745 parser->data = pos;
746
747 if (!unescape_string(parser->data, &line))
748 goto invalid;
749
750 while (*line == ' ' || *line == '\t') line++;
751 if (*line && *line != ';') goto invalid;
752
753 parser->data_size = (lstrlenW(parser->data) + 1) * sizeof(WCHAR);
754
755 set_state(parser, SET_VALUE);
756 return line;
757
758 invalid:
759 free_parser_data(parser);
760 set_state(parser, LINE_START);
761 return line;
762 }
763
764 /* handler for parser DWORD_DATA state */
765 static WCHAR *dword_data_state(struct parser *parser, WCHAR *pos)
766 {
767 WCHAR *line = pos;
768
769 parser->data = heap_xalloc(sizeof(DWORD));
770
771 if (!convert_hex_to_dword(line, parser->data))
772 goto invalid;
773
774 parser->data_size = sizeof(DWORD);
775
776 set_state(parser, SET_VALUE);
777 return line;
778
779 invalid:
780 free_parser_data(parser);
781 set_state(parser, LINE_START);
782 return line;
783 }
784
785 /* handler for parser HEX_DATA state */
786 static WCHAR *hex_data_state(struct parser *parser, WCHAR *pos)
787 {
788 WCHAR *line = pos;
789
790 if (!*line)
791 goto set_value;
792
793 if (!convert_hex_csv_to_hex(parser, &line))
794 goto invalid;
795
796 if (parser->backslash)
797 {
798 set_state(parser, EOL_BACKSLASH);
799 return line;
800 }
801
802 prepare_hex_string_data(parser);
803
804 set_value:
805 set_state(parser, SET_VALUE);
806 return line;
807
808 invalid:
809 free_parser_data(parser);
810 set_state(parser, LINE_START);
811 return line;
812 }
813
814 /* handler for parser EOL_BACKSLASH state */
815 static WCHAR *eol_backslash_state(struct parser *parser, WCHAR *pos)
816 {
817 WCHAR *p = pos;
818
819 while (*p == ' ' || *p == '\t') p++;
820 if (*p && *p != ';') goto invalid;
821
822 set_state(parser, HEX_MULTILINE);
823 return pos;
824
825 invalid:
826 free_parser_data(parser);
827 set_state(parser, LINE_START);
828 return p;
829 }
830
831 /* handler for parser HEX_MULTILINE state */
832 static WCHAR *hex_multiline_state(struct parser *parser, WCHAR *pos)
833 {
834 WCHAR *line;
835
836 if (!(line = get_line(parser->file)))
837 {
838 prepare_hex_string_data(parser);
839 set_state(parser, SET_VALUE);
840 return pos;
841 }
842
843 while (*line == ' ' || *line == '\t') line++;
844 if (!*line || *line == ';') return line;
845
846 if (!isxdigitW(*line)) goto invalid;
847
848 set_state(parser, HEX_DATA);
849 return line;
850
851 invalid:
852 free_parser_data(parser);
853 set_state(parser, LINE_START);
854 return line;
855 }
856
857 /* handler for parser UNKNOWN_DATA state */
858 static WCHAR *unknown_data_state(struct parser *parser, WCHAR *pos)
859 {
860 FIXME("Unknown registry data type [0x%x]\n", parser->data_type);
861
862 set_state(parser, LINE_START);
863 return pos;
864 }
865
866 /* handler for parser SET_VALUE state */
867 static WCHAR *set_value_state(struct parser *parser, WCHAR *pos)
868 {
869 RegSetValueExW(parser->hkey, parser->value_name, 0, parser->data_type,
870 parser->data, parser->data_size);
871
872 free_parser_data(parser);
873
874 if (parser->reg_version == REG_VERSION_31)
875 set_state(parser, PARSE_WIN31_LINE);
876 else
877 set_state(parser, LINE_START);
878
879 return pos;
880 }
881
882 #define REG_VAL_BUF_SIZE 4096
883
884 static WCHAR *get_lineA(FILE *fp)
885 {
886 static WCHAR *lineW;
887 static size_t size;
888 static char *buf, *next;
889 char *line;
890
891 heap_free(lineW);
892
893 if (!fp) goto cleanup;
894
895 if (!size)
896 {
897 size = REG_VAL_BUF_SIZE;
898 buf = heap_xalloc(size);
899 *buf = 0;
900 next = buf;
901 }
902 line = next;
903
904 while (next)
905 {
906 char *p = strpbrk(line, "\r\n");
907 if (!p)
908 {
909 size_t len, count;
910 len = strlen(next);
911 memmove(buf, next, len + 1);
912 if (size - len < 3)
913 {
914 size *= 2;
915 buf = heap_xrealloc(buf, size);
916 }
917 if (!(count = fread(buf + len, 1, size - len - 1, fp)))
918 {
919 next = NULL;
920 lineW = GetWideString(buf);
921 return lineW;
922 }
923 buf[len + count] = 0;
924 next = buf;
925 line = buf;
926 continue;
927 }
928 next = p + 1;
929 if (*p == '\r' && *(p + 1) == '\n') next++;
930 *p = 0;
931 lineW = GetWideString(line);
932 return lineW;
933 }
934
935 cleanup:
936 lineW = NULL;
937 if (size) heap_free(buf);
938 size = 0;
939 return NULL;
940 }
941
942 static WCHAR *get_lineW(FILE *fp)
943 {
944 static size_t size;
945 static WCHAR *buf, *next;
946 WCHAR *line;
947
948 if (!fp) goto cleanup;
949
950 if (!size)
951 {
952 size = REG_VAL_BUF_SIZE;
953 buf = heap_xalloc(size * sizeof(WCHAR));
954 *buf = 0;
955 next = buf;
956 }
957 line = next;
958
959 while (next)
960 {
961 static const WCHAR line_endings[] = {'\r','\n',0};
962 WCHAR *p = strpbrkW(line, line_endings);
963 if (!p)
964 {
965 size_t len, count;
966 len = strlenW(next);
967 memmove(buf, next, (len + 1) * sizeof(WCHAR));
968 if (size - len < 3)
969 {
970 size *= 2;
971 buf = heap_xrealloc(buf, size * sizeof(WCHAR));
972 }
973 if (!(count = fread(buf + len, sizeof(WCHAR), size - len - 1, fp)))
974 {
975 next = NULL;
976 return buf;
977 }
978 buf[len + count] = 0;
979 next = buf;
980 line = buf;
981 continue;
982 }
983 next = p + 1;
984 if (*p == '\r' && *(p + 1) == '\n') next++;
985 *p = 0;
986 return line;
987 }
988
989 cleanup:
990 if (size) heap_free(buf);
991 size = 0;
992 return NULL;
993 }
994
995 int reg_import(const WCHAR *filename)
996 {
997 FILE *fp;
998 static const WCHAR rb_mode[] = {'r','b',0};
999 BYTE s[2];
1000 struct parser parser;
1001 WCHAR *pos;
1002
1003 fp = _wfopen(filename, rb_mode);
1004 if (!fp)
1005 {
1006 output_message(STRING_FILE_NOT_FOUND, filename);
1007 return 1;
1008 }
1009
1010 if (fread(s, sizeof(WCHAR), 1, fp) != 1)
1011 goto error;
1012
1013 parser.is_unicode = (s[0] == 0xff && s[1] == 0xfe);
1014 get_line = parser.is_unicode ? get_lineW : get_lineA;
1015
1016 parser.file = fp;
1017 parser.two_wchars[0] = s[0];
1018 parser.two_wchars[1] = s[1];
1019 parser.reg_version = -1;
1020 parser.hkey = NULL;
1021 parser.key_name = NULL;
1022 parser.value_name = NULL;
1023 parser.parse_type = 0;
1024 parser.data_type = 0;
1025 parser.data = NULL;
1026 parser.data_size = 0;
1027 parser.backslash = FALSE;
1028 parser.state = HEADER;
1029
1030 pos = parser.two_wchars;
1031
1032 /* parser main loop */
1033 while (pos)
1034 pos = (parser_funcs[parser.state])(&parser, pos);
1035
1036 if (parser.reg_version == REG_VERSION_INVALID)
1037 goto error;
1038
1039 heap_free(parser.value_name);
1040 close_key(&parser);
1041
1042 fclose(fp);
1043 return 0;
1044
1045 error:
1046 fclose(fp);
1047 return 1;
1048 }