/* * Registry processing routines. Routines, common for registry * processing frontends. * * Copyright 1999 Sylvain St-Germain * Copyright 2002 Andriy Palamarchuk * Copyright 2008 Alexander N. Sørnes * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA */ #include #include #include #include #include #include #include #include #include "main.h" WINE_DEFAULT_DEBUG_CHANNEL(regedit); #define REG_VAL_BUF_SIZE 4096 static HKEY reg_class_keys[] = { HKEY_LOCAL_MACHINE, HKEY_USERS, HKEY_CLASSES_ROOT, HKEY_CURRENT_CONFIG, HKEY_CURRENT_USER, HKEY_DYN_DATA }; void *heap_xalloc(size_t size) { void *buf = heap_alloc(size); if (!buf) { ERR("Out of memory!\n"); exit(1); } return buf; } void *heap_xrealloc(void *buf, size_t size) { void *new_buf = heap_realloc(buf, size); if (!new_buf) { ERR("Out of memory!\n"); exit(1); } return new_buf; } /****************************************************************************** * Allocates memory and converts input from multibyte to wide chars * Returned string must be freed by the caller */ static WCHAR* GetWideString(const char* strA) { if(strA) { WCHAR* strW; int len = MultiByteToWideChar(CP_ACP, 0, strA, -1, NULL, 0); strW = heap_xalloc(len * sizeof(WCHAR)); MultiByteToWideChar(CP_ACP, 0, strA, -1, strW, len); return strW; } return NULL; } /****************************************************************************** * Allocates memory and converts input from multibyte to wide chars * Returned string must be freed by the caller */ static WCHAR* GetWideStringN(const char* strA, int chars, DWORD *len) { if(strA) { WCHAR* strW; *len = MultiByteToWideChar(CP_ACP, 0, strA, chars, NULL, 0); strW = heap_xalloc(*len * sizeof(WCHAR)); MultiByteToWideChar(CP_ACP, 0, strA, chars, strW, *len); return strW; } *len = 0; return NULL; } /****************************************************************************** * Allocates memory and converts input from wide chars to multibyte * Returned string must be freed by the caller */ char* GetMultiByteString(const WCHAR* strW) { if(strW) { char* strA; int len = WideCharToMultiByte(CP_ACP, 0, strW, -1, NULL, 0, NULL, NULL); strA = heap_xalloc(len); WideCharToMultiByte(CP_ACP, 0, strW, -1, strA, len, NULL, NULL); return strA; } return NULL; } /****************************************************************************** * Allocates memory and converts input from wide chars to multibyte * Returned string must be freed by the caller */ static char* GetMultiByteStringN(const WCHAR* strW, int chars, DWORD* len) { if(strW) { char* strA; *len = WideCharToMultiByte(CP_ACP, 0, strW, chars, NULL, 0, NULL, NULL); strA = heap_xalloc(*len); WideCharToMultiByte(CP_ACP, 0, strW, chars, strA, *len, NULL, NULL); return strA; } *len = 0; return NULL; } static WCHAR *(*get_line)(FILE *); /* parser definitions */ enum parser_state { HEADER, /* parsing the registry file version header */ PARSE_WIN31_LINE, /* parsing a Windows 3.1 registry line */ LINE_START, /* at the beginning of a registry line */ KEY_NAME, /* parsing a key name */ DELETE_KEY, /* deleting a registry key */ DEFAULT_VALUE_NAME, /* parsing a default value name */ QUOTED_VALUE_NAME, /* parsing a double-quoted value name */ DATA_START, /* preparing for data parsing operations */ DELETE_VALUE, /* deleting a registry value */ DATA_TYPE, /* parsing the registry data type */ STRING_DATA, /* parsing REG_SZ data */ DWORD_DATA, /* parsing DWORD data */ HEX_DATA, /* parsing REG_BINARY, REG_NONE, REG_EXPAND_SZ or REG_MULTI_SZ data */ EOL_BACKSLASH, /* preparing to parse multiple lines of hex data */ HEX_MULTILINE, /* parsing multiple lines of hex data */ UNKNOWN_DATA, /* parsing an unhandled or invalid data type */ SET_VALUE, /* adding a value to the registry */ NB_PARSER_STATES }; struct parser { FILE *file; /* pointer to a registry file */ WCHAR two_wchars[2]; /* first two characters from the encoding check */ BOOL is_unicode; /* parsing Unicode or ASCII data */ short int reg_version; /* registry file version */ HKEY hkey; /* current registry key */ WCHAR *key_name; /* current key name */ WCHAR *value_name; /* value name */ DWORD parse_type; /* generic data type for parsing */ DWORD data_type; /* data type */ void *data; /* value data */ DWORD data_size; /* size of the data (in bytes) */ BOOL backslash; /* TRUE if the current line contains a backslash */ enum parser_state state; /* current parser state */ }; typedef WCHAR *(*parser_state_func)(struct parser *parser, WCHAR *pos); /* parser state machine functions */ static WCHAR *header_state(struct parser *parser, WCHAR *pos); static WCHAR *parse_win31_line_state(struct parser *parser, WCHAR *pos); static WCHAR *line_start_state(struct parser *parser, WCHAR *pos); static WCHAR *key_name_state(struct parser *parser, WCHAR *pos); static WCHAR *delete_key_state(struct parser *parser, WCHAR *pos); static WCHAR *default_value_name_state(struct parser *parser, WCHAR *pos); static WCHAR *quoted_value_name_state(struct parser *parser, WCHAR *pos); static WCHAR *data_start_state(struct parser *parser, WCHAR *pos); static WCHAR *delete_value_state(struct parser *parser, WCHAR *pos); static WCHAR *data_type_state(struct parser *parser, WCHAR *pos); static WCHAR *string_data_state(struct parser *parser, WCHAR *pos); static WCHAR *dword_data_state(struct parser *parser, WCHAR *pos); static WCHAR *hex_data_state(struct parser *parser, WCHAR *pos); static WCHAR *eol_backslash_state(struct parser *parser, WCHAR *pos); static WCHAR *hex_multiline_state(struct parser *parser, WCHAR *pos); static WCHAR *unknown_data_state(struct parser *parser, WCHAR *pos); static WCHAR *set_value_state(struct parser *parser, WCHAR *pos); static const parser_state_func parser_funcs[NB_PARSER_STATES] = { header_state, /* HEADER */ parse_win31_line_state, /* PARSE_WIN31_LINE */ line_start_state, /* LINE_START */ key_name_state, /* KEY_NAME */ delete_key_state, /* DELETE_KEY */ default_value_name_state, /* DEFAULT_VALUE_NAME */ quoted_value_name_state, /* QUOTED_VALUE_NAME */ data_start_state, /* DATA_START */ delete_value_state, /* DELETE_VALUE */ data_type_state, /* DATA_TYPE */ string_data_state, /* STRING_DATA */ dword_data_state, /* DWORD_DATA */ hex_data_state, /* HEX_DATA */ eol_backslash_state, /* EOL_BACKSLASH */ hex_multiline_state, /* HEX_MULTILINE */ unknown_data_state, /* UNKNOWN_DATA */ set_value_state, /* SET_VALUE */ }; /* set the new parser state and return the previous one */ static inline enum parser_state set_state(struct parser *parser, enum parser_state state) { enum parser_state ret = parser->state; parser->state = state; return ret; } /****************************************************************************** * Converts a hex representation of a DWORD into a DWORD. */ static BOOL convert_hex_to_dword(WCHAR *str, DWORD *dw) { WCHAR *p, *end; int count = 0; while (*str == ' ' || *str == '\t') str++; if (!*str) goto error; p = str; while (iswxdigit(*p)) { count++; p++; } if (count > 8) goto error; end = p; while (*p == ' ' || *p == '\t') p++; if (*p && *p != ';') goto error; *end = 0; *dw = wcstoul(str, &end, 16); return TRUE; error: return FALSE; } /****************************************************************************** * Converts comma-separated hex data into a binary string and modifies * the input parameter to skip the concatenating backslash, if found. * * Returns TRUE or FALSE to indicate whether parsing was successful. */ static BOOL convert_hex_csv_to_hex(struct parser *parser, WCHAR **str) { size_t size; BYTE *d; WCHAR *s; parser->backslash = FALSE; /* The worst case is 1 digit + 1 comma per byte */ size = ((lstrlenW(*str) + 1) / 2) + parser->data_size; parser->data = heap_xrealloc(parser->data, size); s = *str; d = (BYTE *)parser->data + parser->data_size; while (*s) { WCHAR *end; unsigned long wc; wc = wcstoul(s, &end, 16); if (wc > 0xff) return FALSE; if (s == end && wc == 0) { while (*end == ' ' || *end == '\t') end++; if (*end == '\\') { parser->backslash = TRUE; *str = end + 1; return TRUE; } else if (*end == ';') return TRUE; return FALSE; } *d++ = wc; parser->data_size++; if (*end && *end != ',') { while (*end == ' ' || *end == '\t') end++; if (*end && *end != ';') return FALSE; return TRUE; } if (*end) end++; s = end; } return TRUE; } /****************************************************************************** * Parses the data type of the registry value being imported and modifies * the input parameter to skip the string representation of the data type. * * Returns TRUE or FALSE to indicate whether a data type was found. */ static BOOL parse_data_type(struct parser *parser, WCHAR **line) { struct data_type { const WCHAR *tag; int len; int type; int parse_type; }; static const struct data_type data_types[] = { /* tag len type parse type */ { L"\"", 1, REG_SZ, REG_SZ }, { L"hex:", 4, REG_BINARY, REG_BINARY }, { L"dword:", 6, REG_DWORD, REG_DWORD }, { L"hex(", 4, -1, REG_BINARY }, /* REG_NONE, REG_EXPAND_SZ, REG_MULTI_SZ */ { NULL, 0, 0, 0 } }; const struct data_type *ptr; for (ptr = data_types; ptr->tag; ptr++) { if (wcsncmp(ptr->tag, *line, ptr->len)) continue; parser->parse_type = ptr->parse_type; parser->data_type = ptr->parse_type; *line += ptr->len; if (ptr->type == -1) { WCHAR *end; DWORD val; if (!**line || towlower((*line)[1]) == 'x') return FALSE; /* "hex(xx):" is special */ val = wcstoul(*line, &end, 16); if (*end != ')' || *(end + 1) != ':' || (val == ~0u && errno == ERANGE)) return FALSE; parser->data_type = val; *line = end + 2; } return TRUE; } return FALSE; } /****************************************************************************** * Replaces escape sequences with their character equivalents and * null-terminates the string on the first non-escaped double quote. * * Assigns a pointer to the remaining unparsed data in the line. * Returns TRUE or FALSE to indicate whether a closing double quote was found. */ static BOOL REGPROC_unescape_string(WCHAR *str, WCHAR **unparsed) { int str_idx = 0; /* current character under analysis */ int val_idx = 0; /* the last character of the unescaped string */ int len = lstrlenW(str); BOOL ret; for (str_idx = 0; str_idx < len; str_idx++, val_idx++) { if (str[str_idx] == '\\') { str_idx++; switch (str[str_idx]) { case 'n': str[val_idx] = '\n'; break; case 'r': str[val_idx] = '\r'; break; case '0': return FALSE; case '\\': case '"': str[val_idx] = str[str_idx]; break; default: if (!str[str_idx]) return FALSE; output_message(STRING_ESCAPE_SEQUENCE, str[str_idx]); str[val_idx] = str[str_idx]; break; } } else if (str[str_idx] == '"') { break; } else { str[val_idx] = str[str_idx]; } } ret = (str[str_idx] == '"'); *unparsed = str + str_idx + 1; str[val_idx] = '\0'; return ret; } static HKEY parse_key_name(WCHAR *key_name, WCHAR **key_path) { unsigned int i; if (!key_name) return 0; *key_path = wcschr(key_name, '\\'); if (*key_path) (*key_path)++; for (i = 0; i < ARRAY_SIZE(reg_class_keys); i++) { int len = lstrlenW(reg_class_namesW[i]); if (!wcsnicmp(key_name, reg_class_namesW[i], len) && (key_name[len] == 0 || key_name[len] == '\\')) { return reg_class_keys[i]; } } return 0; } static void close_key(struct parser *parser) { if (parser->hkey) { heap_free(parser->key_name); parser->key_name = NULL; RegCloseKey(parser->hkey); parser->hkey = NULL; } } /****************************************************************************** * Opens the registry key given by the input path. * This key must be closed by calling close_key(). */ static LONG open_key(struct parser *parser, WCHAR *path) { HKEY key_class; WCHAR *key_path; LONG res; close_key(parser); /* Get the registry class */ if (!path || !(key_class = parse_key_name(path, &key_path))) return ERROR_INVALID_PARAMETER; res = RegCreateKeyExW(key_class, key_path, 0, NULL, REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, NULL, &parser->hkey, NULL); if (res == ERROR_SUCCESS) { parser->key_name = heap_xalloc((lstrlenW(path) + 1) * sizeof(WCHAR)); lstrcpyW(parser->key_name, path); } else parser->hkey = NULL; return res; } static void free_parser_data(struct parser *parser) { if (parser->parse_type == REG_DWORD || parser->parse_type == REG_BINARY) heap_free(parser->data); parser->data = NULL; parser->data_size = 0; } static void prepare_hex_string_data(struct parser *parser) { if (parser->data_type == REG_EXPAND_SZ || parser->data_type == REG_MULTI_SZ || parser->data_type == REG_SZ) { if (parser->is_unicode) { WCHAR *data = parser->data; DWORD len = parser->data_size / sizeof(WCHAR); if (data[len - 1] != 0) { data[len] = 0; parser->data_size += sizeof(WCHAR); } } else { BYTE *data = parser->data; if (data[parser->data_size - 1] != 0) { data[parser->data_size] = 0; parser->data_size++; } parser->data = GetWideStringN(parser->data, parser->data_size, &parser->data_size); parser->data_size *= sizeof(WCHAR); heap_free(data); } } } enum reg_versions { REG_VERSION_31, REG_VERSION_40, REG_VERSION_50, REG_VERSION_FUZZY, REG_VERSION_INVALID }; static enum reg_versions parse_file_header(const WCHAR *s) { static const WCHAR header_31[] = L"REGEDIT"; while (*s == ' ' || *s == '\t') s++; if (!lstrcmpW(s, header_31)) return REG_VERSION_31; if (!lstrcmpW(s, L"REGEDIT4")) return REG_VERSION_40; if (!lstrcmpW(s, L"Windows Registry Editor Version 5.00")) return REG_VERSION_50; /* The Windows version accepts registry file headers beginning with "REGEDIT" and ending * with other characters, as long as "REGEDIT" appears at the start of the line. For example, * "REGEDIT 4", "REGEDIT9" and "REGEDIT4FOO" are all treated as valid file headers. * In all such cases, however, the contents of the registry file are not imported. */ if (!wcsncmp(s, header_31, 7)) /* "REGEDIT" without NUL */ return REG_VERSION_FUZZY; return REG_VERSION_INVALID; } /* handler for parser HEADER state */ static WCHAR *header_state(struct parser *parser, WCHAR *pos) { WCHAR *line, *header; if (!(line = get_line(parser->file))) return NULL; if (!parser->is_unicode) { header = heap_xalloc((lstrlenW(line) + 3) * sizeof(WCHAR)); header[0] = parser->two_wchars[0]; header[1] = parser->two_wchars[1]; lstrcpyW(header + 2, line); parser->reg_version = parse_file_header(header); heap_free(header); } else parser->reg_version = parse_file_header(line); switch (parser->reg_version) { case REG_VERSION_31: set_state(parser, PARSE_WIN31_LINE); break; case REG_VERSION_40: case REG_VERSION_50: set_state(parser, LINE_START); break; default: get_line(NULL); /* Reset static variables */ return NULL; } return line; } /* handler for parser PARSE_WIN31_LINE state */ static WCHAR *parse_win31_line_state(struct parser *parser, WCHAR *pos) { WCHAR *line, *value; static WCHAR hkcr[] = L"HKEY_CLASSES_ROOT"; unsigned int key_end = 0; if (!(line = get_line(parser->file))) return NULL; if (wcsncmp(line, hkcr, lstrlenW(hkcr))) return line; /* get key name */ while (line[key_end] && !iswspace(line[key_end])) key_end++; value = line + key_end; while (*value == ' ' || *value == '\t') value++; if (*value == '=') value++; if (*value == ' ') value++; /* at most one space is skipped */ line[key_end] = 0; if (open_key(parser, line) != ERROR_SUCCESS) { output_message(STRING_OPEN_KEY_FAILED, line); return line; } parser->value_name = NULL; parser->data_type = REG_SZ; parser->data = value; parser->data_size = (lstrlenW(value) + 1) * sizeof(WCHAR); set_state(parser, SET_VALUE); return value; } /* handler for parser LINE_START state */ static WCHAR *line_start_state(struct parser *parser, WCHAR *pos) { WCHAR *line, *p; if (!(line = get_line(parser->file))) return NULL; for (p = line; *p; p++) { switch (*p) { case '[': set_state(parser, KEY_NAME); return p + 1; case '@': set_state(parser, DEFAULT_VALUE_NAME); return p; case '"': set_state(parser, QUOTED_VALUE_NAME); return p + 1; case ' ': case '\t': break; default: return p; } } return p; } /* handler for parser KEY_NAME state */ static WCHAR *key_name_state(struct parser *parser, WCHAR *pos) { WCHAR *p = pos, *key_end; if (*p == ' ' || *p == '\t' || !(key_end = wcsrchr(p, ']'))) goto done; *key_end = 0; if (*p == '-') { set_state(parser, DELETE_KEY); return p + 1; } else if (open_key(parser, p) != ERROR_SUCCESS) output_message(STRING_OPEN_KEY_FAILED, p); done: set_state(parser, LINE_START); return p; } /* handler for parser DELETE_KEY state */ static WCHAR *delete_key_state(struct parser *parser, WCHAR *pos) { WCHAR *p = pos; close_key(parser); if (*p == 'H' || *p == 'h') delete_registry_key(p); set_state(parser, LINE_START); return p; } /* handler for parser DEFAULT_VALUE_NAME state */ static WCHAR *default_value_name_state(struct parser *parser, WCHAR *pos) { heap_free(parser->value_name); parser->value_name = NULL; set_state(parser, DATA_START); return pos + 1; } /* handler for parser QUOTED_VALUE_NAME state */ static WCHAR *quoted_value_name_state(struct parser *parser, WCHAR *pos) { WCHAR *val_name = pos, *p; heap_free(parser->value_name); parser->value_name = NULL; if (!REGPROC_unescape_string(val_name, &p)) goto invalid; /* copy the value name in case we need to parse multiple lines and the buffer is overwritten */ parser->value_name = heap_xalloc((lstrlenW(val_name) + 1) * sizeof(WCHAR)); lstrcpyW(parser->value_name, val_name); set_state(parser, DATA_START); return p; invalid: set_state(parser, LINE_START); return val_name; } /* handler for parser DATA_START state */ static WCHAR *data_start_state(struct parser *parser, WCHAR *pos) { WCHAR *p = pos; unsigned int len; while (*p == ' ' || *p == '\t') p++; if (*p != '=') goto done; p++; while (*p == ' ' || *p == '\t') p++; /* trim trailing whitespace */ len = lstrlenW(p); while (len > 0 && (p[len - 1] == ' ' || p[len - 1] == '\t')) len--; p[len] = 0; if (*p == '-') set_state(parser, DELETE_VALUE); else set_state(parser, DATA_TYPE); return p; done: set_state(parser, LINE_START); return p; } /* handler for parser DELETE_VALUE state */ static WCHAR *delete_value_state(struct parser *parser, WCHAR *pos) { WCHAR *p = pos + 1; while (*p == ' ' || *p == '\t') p++; if (*p && *p != ';') goto done; RegDeleteValueW(parser->hkey, parser->value_name); done: set_state(parser, LINE_START); return p; } /* handler for parser DATA_TYPE state */ static WCHAR *data_type_state(struct parser *parser, WCHAR *pos) { WCHAR *line = pos; if (!parse_data_type(parser, &line)) { set_state(parser, LINE_START); return line; } switch (parser->parse_type) { case REG_SZ: set_state(parser, STRING_DATA); break; case REG_DWORD: set_state(parser, DWORD_DATA); break; case REG_BINARY: /* all hex data types, including undefined */ set_state(parser, HEX_DATA); break; default: set_state(parser, UNKNOWN_DATA); } return line; } /* handler for parser STRING_DATA state */ static WCHAR *string_data_state(struct parser *parser, WCHAR *pos) { WCHAR *line; parser->data = pos; if (!REGPROC_unescape_string(parser->data, &line)) goto invalid; while (*line == ' ' || *line == '\t') line++; if (*line && *line != ';') goto invalid; parser->data_size = (lstrlenW(parser->data) + 1) * sizeof(WCHAR); set_state(parser, SET_VALUE); return line; invalid: free_parser_data(parser); set_state(parser, LINE_START); return line; } /* handler for parser DWORD_DATA state */ static WCHAR *dword_data_state(struct parser *parser, WCHAR *pos) { WCHAR *line = pos; parser->data = heap_xalloc(sizeof(DWORD)); if (!convert_hex_to_dword(line, parser->data)) goto invalid; parser->data_size = sizeof(DWORD); set_state(parser, SET_VALUE); return line; invalid: free_parser_data(parser); set_state(parser, LINE_START); return line; } /* handler for parser HEX_DATA state */ static WCHAR *hex_data_state(struct parser *parser, WCHAR *pos) { WCHAR *line = pos; if (!*line) goto set_value; if (!convert_hex_csv_to_hex(parser, &line)) goto invalid; if (parser->backslash) { set_state(parser, EOL_BACKSLASH); return line; } prepare_hex_string_data(parser); set_value: set_state(parser, SET_VALUE); return line; invalid: free_parser_data(parser); set_state(parser, LINE_START); return line; } /* handler for parser EOL_BACKSLASH state */ static WCHAR *eol_backslash_state(struct parser *parser, WCHAR *pos) { WCHAR *p = pos; while (*p == ' ' || *p == '\t') p++; if (*p && *p != ';') goto invalid; set_state(parser, HEX_MULTILINE); return pos; invalid: free_parser_data(parser); set_state(parser, LINE_START); return p; } /* handler for parser HEX_MULTILINE state */ static WCHAR *hex_multiline_state(struct parser *parser, WCHAR *pos) { WCHAR *line; if (!(line = get_line(parser->file))) { prepare_hex_string_data(parser); set_state(parser, SET_VALUE); return pos; } while (*line == ' ' || *line == '\t') line++; if (!*line || *line == ';') return line; if (!iswxdigit(*line)) goto invalid; set_state(parser, HEX_DATA); return line; invalid: free_parser_data(parser); set_state(parser, LINE_START); return line; } /* handler for parser UNKNOWN_DATA state */ static WCHAR *unknown_data_state(struct parser *parser, WCHAR *pos) { output_message(STRING_UNKNOWN_DATA_FORMAT, parser->data_type); set_state(parser, LINE_START); return pos; } /* handler for parser SET_VALUE state */ static WCHAR *set_value_state(struct parser *parser, WCHAR *pos) { RegSetValueExW(parser->hkey, parser->value_name, 0, parser->data_type, parser->data, parser->data_size); free_parser_data(parser); if (parser->reg_version == REG_VERSION_31) set_state(parser, PARSE_WIN31_LINE); else set_state(parser, LINE_START); return pos; } static WCHAR *get_lineA(FILE *fp) { static WCHAR *lineW; static size_t size; static char *buf, *next; char *line; heap_free(lineW); if (!fp) goto cleanup; if (!size) { size = REG_VAL_BUF_SIZE; buf = heap_xalloc(size); *buf = 0; next = buf; } line = next; while (next) { char *p = strpbrk(line, "\r\n"); if (!p) { size_t len, count; len = strlen(next); memmove(buf, next, len + 1); if (size - len < 3) { size *= 2; buf = heap_xrealloc(buf, size); } if (!(count = fread(buf + len, 1, size - len - 1, fp))) { next = NULL; lineW = GetWideString(buf); return lineW; } buf[len + count] = 0; next = buf; line = buf; continue; } next = p + 1; if (*p == '\r' && *(p + 1) == '\n') next++; *p = 0; lineW = GetWideString(line); return lineW; } cleanup: lineW = NULL; if (size) heap_free(buf); size = 0; return NULL; } static WCHAR *get_lineW(FILE *fp) { static size_t size; static WCHAR *buf, *next; WCHAR *line; if (!fp) goto cleanup; if (!size) { size = REG_VAL_BUF_SIZE; buf = heap_xalloc(size * sizeof(WCHAR)); *buf = 0; next = buf; } line = next; while (next) { WCHAR *p = wcspbrk(line, L"\r\n"); if (!p) { size_t len, count; len = lstrlenW(next); memmove(buf, next, (len + 1) * sizeof(WCHAR)); if (size - len < 3) { size *= 2; buf = heap_xrealloc(buf, size * sizeof(WCHAR)); } if (!(count = fread(buf + len, sizeof(WCHAR), size - len - 1, fp))) { next = NULL; return buf; } buf[len + count] = 0; next = buf; line = buf; continue; } next = p + 1; if (*p == '\r' && *(p + 1) == '\n') next++; *p = 0; return line; } cleanup: if (size) heap_free(buf); size = 0; return NULL; } /****************************************************************************** * Reads contents of the specified file into the registry. */ BOOL import_registry_file(FILE *reg_file) { BYTE s[2]; struct parser parser; WCHAR *pos; if (!reg_file || (fread(s, 2, 1, reg_file) != 1)) return FALSE; parser.is_unicode = (s[0] == 0xff && s[1] == 0xfe); get_line = parser.is_unicode ? get_lineW : get_lineA; parser.file = reg_file; parser.two_wchars[0] = s[0]; parser.two_wchars[1] = s[1]; parser.reg_version = -1; parser.hkey = NULL; parser.key_name = NULL; parser.value_name = NULL; parser.parse_type = 0; parser.data_type = 0; parser.data = NULL; parser.data_size = 0; parser.backslash = FALSE; parser.state = HEADER; pos = parser.two_wchars; /* parser main loop */ while (pos) pos = (parser_funcs[parser.state])(&parser, pos); if (parser.reg_version == REG_VERSION_FUZZY || parser.reg_version == REG_VERSION_INVALID) return parser.reg_version == REG_VERSION_FUZZY; heap_free(parser.value_name); close_key(&parser); return TRUE; } /****************************************************************************** * Removes the registry key with all subkeys. Parses full key name. * * Parameters: * reg_key_name - full name of registry branch to delete. Ignored if is NULL, * empty, points to register key class, does not exist. */ void delete_registry_key(WCHAR *reg_key_name) { WCHAR *key_name = NULL; HKEY key_class; if (!reg_key_name || !reg_key_name[0]) return; if (!(key_class = parse_key_name(reg_key_name, &key_name))) { if (key_name) *(key_name - 1) = 0; error_exit(STRING_INVALID_SYSTEM_KEY, reg_key_name); } if (!key_name || !*key_name) error_exit(STRING_DELETE_FAILED, reg_key_name); RegDeleteTreeW(key_class, key_name); } static void REGPROC_write_line(FILE *fp, const WCHAR *str, BOOL unicode) { if (unicode) fwrite(str, sizeof(WCHAR), lstrlenW(str), fp); else { char *strA = GetMultiByteString(str); fputs(strA, fp); heap_free(strA); } } static WCHAR *REGPROC_escape_string(WCHAR *str, size_t str_len, size_t *line_len) { size_t i, escape_count, pos; WCHAR *buf; for (i = 0, escape_count = 0; i < str_len; i++) { WCHAR c = str[i]; if (!c) break; if (c == '\r' || c == '\n' || c == '\\' || c == '"') escape_count++; } buf = heap_xalloc((str_len + escape_count + 1) * sizeof(WCHAR)); for (i = 0, pos = 0; i < str_len; i++, pos++) { WCHAR c = str[i]; if (!c) break; switch (c) { case '\r': buf[pos++] = '\\'; buf[pos] = 'r'; break; case '\n': buf[pos++] = '\\'; buf[pos] = 'n'; break; case '\\': buf[pos++] = '\\'; buf[pos] = '\\'; break; case '"': buf[pos++] = '\\'; buf[pos] = '"'; break; default: buf[pos] = c; } } buf[pos] = 0; *line_len = pos; return buf; } static size_t export_value_name(FILE *fp, WCHAR *name, size_t len, BOOL unicode) { static const WCHAR default_name[] = L"@="; size_t line_len; if (name && *name) { WCHAR *str = REGPROC_escape_string(name, len, &line_len); WCHAR *buf = heap_xalloc((line_len + 4) * sizeof(WCHAR)); line_len = swprintf(buf, line_len + 4, L"\"%s\"=", str); REGPROC_write_line(fp, buf, unicode); heap_free(buf); heap_free(str); } else { line_len = lstrlenW(default_name); REGPROC_write_line(fp, default_name, unicode); } return line_len; } static void export_string_data(WCHAR **buf, WCHAR *data, size_t size) { size_t len = 0, line_len; WCHAR *str; if (size) len = size / sizeof(WCHAR) - 1; str = REGPROC_escape_string(data, len, &line_len); *buf = heap_xalloc((line_len + 3) * sizeof(WCHAR)); swprintf(*buf, line_len + 3, L"\"%s\"", str); heap_free(str); } static void export_dword_data(WCHAR **buf, DWORD *data) { *buf = heap_xalloc(15 * sizeof(WCHAR)); swprintf(*buf, 15, L"dword:%08x", *data); } static size_t export_hex_data_type(FILE *fp, DWORD type, BOOL unicode) { static const WCHAR hex[] = L"hex:"; size_t line_len; if (type == REG_BINARY) { line_len = lstrlenW(hex); REGPROC_write_line(fp, hex, unicode); } else { WCHAR *buf = heap_xalloc(15 * sizeof(WCHAR)); line_len = swprintf(buf, 15, L"hex(%x):", type); REGPROC_write_line(fp, buf, unicode); heap_free(buf); } return line_len; } #define MAX_HEX_CHARS 77 static void export_hex_data(FILE *fp, WCHAR **buf, DWORD type, DWORD line_len, void *data, DWORD size, BOOL unicode) { size_t num_commas, i, pos; line_len += export_hex_data_type(fp, type, unicode); if (!size) return; if (!unicode && (type == REG_EXPAND_SZ || type == REG_MULTI_SZ)) data = GetMultiByteStringN(data, size / sizeof(WCHAR), &size); num_commas = size - 1; *buf = heap_xalloc(size * 3 * sizeof(WCHAR)); for (i = 0, pos = 0; i < size; i++) { pos += swprintf(*buf + pos, 3, L"%02x", ((BYTE *)data)[i]); if (i == num_commas) break; (*buf)[pos++] = ','; (*buf)[pos] = 0; line_len += 3; if (line_len >= MAX_HEX_CHARS) { REGPROC_write_line(fp, *buf, unicode); REGPROC_write_line(fp, L"\\\r\n ", unicode); line_len = 2; pos = 0; } } } static void export_newline(FILE *fp, BOOL unicode) { REGPROC_write_line(fp, L"\r\n", unicode); } static void export_data(FILE *fp, WCHAR *value_name, DWORD value_len, DWORD type, void *data, size_t size, BOOL unicode) { WCHAR *buf = NULL; size_t line_len = export_value_name(fp, value_name, value_len, unicode); switch (type) { case REG_SZ: export_string_data(&buf, data, size); break; case REG_DWORD: if (size) { export_dword_data(&buf, data); break; } /* fall through */ case REG_NONE: case REG_EXPAND_SZ: case REG_BINARY: case REG_MULTI_SZ: default: export_hex_data(fp, &buf, type, line_len, data, size, unicode); break; } if (size || type == REG_SZ) { REGPROC_write_line(fp, buf, unicode); heap_free(buf); } export_newline(fp, unicode); } static WCHAR *build_subkey_path(WCHAR *path, DWORD path_len, WCHAR *subkey_name, DWORD subkey_len) { WCHAR *subkey_path; subkey_path = heap_xalloc((path_len + subkey_len + 2) * sizeof(WCHAR)); swprintf(subkey_path, path_len + subkey_len + 2, L"%s\\%s", path, subkey_name); return subkey_path; } static void export_key_name(FILE *fp, WCHAR *name, BOOL unicode) { WCHAR *buf; buf = heap_xalloc((lstrlenW(name) + 7) * sizeof(WCHAR)); swprintf(buf, lstrlenW(name) + 7, L"\r\n[%s]\r\n", name); REGPROC_write_line(fp, buf, unicode); heap_free(buf); } #define MAX_SUBKEY_LEN 257 static int export_registry_data(FILE *fp, HKEY key, WCHAR *path, BOOL unicode) { LONG rc; DWORD max_value_len = 256, value_len; DWORD max_data_bytes = 2048, data_size; DWORD subkey_len; DWORD i, type, path_len; WCHAR *value_name, *subkey_name, *subkey_path; BYTE *data; HKEY subkey; export_key_name(fp, path, unicode); value_name = heap_xalloc(max_value_len * sizeof(WCHAR)); data = heap_xalloc(max_data_bytes); i = 0; for (;;) { value_len = max_value_len; data_size = max_data_bytes; rc = RegEnumValueW(key, i, value_name, &value_len, NULL, &type, data, &data_size); if (rc == ERROR_SUCCESS) { export_data(fp, value_name, value_len, type, data, data_size, unicode); i++; } else if (rc == ERROR_MORE_DATA) { if (data_size > max_data_bytes) { max_data_bytes = data_size; data = heap_xrealloc(data, max_data_bytes); } else { max_value_len *= 2; value_name = heap_xrealloc(value_name, max_value_len * sizeof(WCHAR)); } } else break; } heap_free(data); heap_free(value_name); subkey_name = heap_xalloc(MAX_SUBKEY_LEN * sizeof(WCHAR)); path_len = lstrlenW(path); i = 0; for (;;) { subkey_len = MAX_SUBKEY_LEN; rc = RegEnumKeyExW(key, i, subkey_name, &subkey_len, NULL, NULL, NULL, NULL); if (rc == ERROR_SUCCESS) { subkey_path = build_subkey_path(path, path_len, subkey_name, subkey_len); if (!RegOpenKeyExW(key, subkey_name, 0, KEY_READ, &subkey)) { export_registry_data(fp, subkey, subkey_path, unicode); RegCloseKey(subkey); } heap_free(subkey_path); i++; } else break; } heap_free(subkey_name); return 0; } static FILE *REGPROC_open_export_file(WCHAR *file_name, BOOL unicode) { FILE *file; if (!lstrcmpW(file_name, L"-")) { file = stdout; _setmode(_fileno(file), _O_BINARY); } else { file = _wfopen(file_name, L"wb"); if (!file) { _wperror(L"regedit"); error_exit(STRING_CANNOT_OPEN_FILE, file_name); } } if (unicode) { static const BYTE bom[] = {0xff,0xfe}; static const WCHAR header[] = L"Windows Registry Editor Version 5.00\r\n"; fwrite(bom, sizeof(BYTE), ARRAY_SIZE(bom), file); fwrite(header, sizeof(WCHAR), lstrlenW(header), file); } else fputs("REGEDIT4\r\n", file); return file; } static HKEY open_export_key(HKEY key_class, WCHAR *subkey, WCHAR *path) { HKEY key; if (!RegOpenKeyExW(key_class, subkey, 0, KEY_READ, &key)) return key; output_message(STRING_OPEN_KEY_FAILED, path); return NULL; } static BOOL export_key(WCHAR *file_name, WCHAR *path, BOOL unicode) { HKEY key_class, key; WCHAR *subkey; FILE *fp; BOOL ret; if (!(key_class = parse_key_name(path, &subkey))) { if (subkey) *(subkey - 1) = 0; output_message(STRING_INVALID_SYSTEM_KEY, path); return FALSE; } if (!(key = open_export_key(key_class, subkey, path))) return FALSE; fp = REGPROC_open_export_file(file_name, unicode); ret = export_registry_data(fp, key, path, unicode); export_newline(fp, unicode); fclose(fp); RegCloseKey(key); return ret; } static BOOL export_all(WCHAR *file_name, WCHAR *path, BOOL unicode) { FILE *fp; int i; HKEY classes[] = {HKEY_LOCAL_MACHINE, HKEY_USERS}, key; WCHAR *class_name; fp = REGPROC_open_export_file(file_name, unicode); for (i = 0; i < ARRAY_SIZE(classes); i++) { if (!(key = open_export_key(classes[i], NULL, path))) { fclose(fp); return FALSE; } class_name = heap_xalloc((lstrlenW(reg_class_namesW[i]) + 1) * sizeof(WCHAR)); lstrcpyW(class_name, reg_class_namesW[i]); export_registry_data(fp, classes[i], class_name, unicode); heap_free(class_name); RegCloseKey(key); } export_newline(fp, unicode); fclose(fp); return TRUE; } BOOL export_registry_key(WCHAR *file_name, WCHAR *path, DWORD format) { BOOL unicode = (format == REG_FORMAT_5); if (path && *path) return export_key(file_name, path, unicode); else return export_all(file_name, path, unicode); }