/* * 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 #include #include #include #include "regproc.h" #define REG_VAL_BUF_SIZE 4096 /* maximal number of characters in hexadecimal data line, * including the indentation, but not including the '\' character */ #define REG_FILE_HEX_LINE_LEN (2 + 25 * 3) extern const WCHAR* reg_class_namesW[]; static HKEY reg_class_keys[] = { HKEY_LOCAL_MACHINE, HKEY_USERS, HKEY_CLASSES_ROOT, HKEY_CURRENT_CONFIG, HKEY_CURRENT_USER, HKEY_DYN_DATA }; #define ARRAY_SIZE(A) (sizeof(A)/sizeof(*A)) /****************************************************************************** * 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 = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR)); CHECK_ENOUGH_MEMORY(strW); 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 = HeapAlloc(GetProcessHeap(), 0, *len * sizeof(WCHAR)); CHECK_ENOUGH_MEMORY(strW); 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 = HeapAlloc(GetProcessHeap(), 0, len); CHECK_ENOUGH_MEMORY(strA); 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 = HeapAlloc(GetProcessHeap(), 0, *len); CHECK_ENOUGH_MEMORY(strA); 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 */ 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) */ 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 *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 */ 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 (isxdigitW(*p)) { count++; p++; } if (count > 8) goto error; end = p; while (*p == ' ' || *p == '\t') p++; if (*p && *p != ';') goto error; *end = 0; *dw = strtoulW(str, &end, 16); return TRUE; error: return FALSE; } /****************************************************************************** * Converts comma-separated hex data into a binary string. */ static BYTE *convert_hex_csv_to_hex(WCHAR *str, DWORD *size) { WCHAR *s; BYTE *d, *data; /* The worst case is 1 digit + 1 comma per byte */ *size=(lstrlenW(str)+1)/2; data=HeapAlloc(GetProcessHeap(), 0, *size); CHECK_ENOUGH_MEMORY(data); s = str; d = data; *size=0; while (*s != '\0') { UINT wc; WCHAR *end; wc = strtoulW(s,&end,16); if (end == s || wc > 0xff || (*end && *end != ',')) { HeapFree(GetProcessHeap(), 0, data); return NULL; } *d++ =(BYTE)wc; (*size)++; if (*end) end++; s = end; } return data; } /****************************************************************************** * 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 WCHAR quote[] = {'"'}; static const WCHAR hex[] = {'h','e','x',':'}; static const WCHAR dword[] = {'d','w','o','r','d',':'}; static const WCHAR hexp[] = {'h','e','x','('}; static const struct data_type data_types[] = { /* tag len type parse type */ { quote, 1, REG_SZ, REG_SZ }, { hex, 4, REG_BINARY, REG_BINARY }, { dword, 6, REG_DWORD, REG_DWORD }, { hexp, 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 (strncmpW(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; /* "hex(xx):" is special */ val = wcstoul(*line, &end, 16); if (!**line || *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': str[val_idx] = '\0'; break; case '\\': case '"': str[val_idx] = str[str_idx]; break; default: 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 = strchrW(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 (!strncmpiW(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) { HeapFree(GetProcessHeap(), 0, 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 = HeapAlloc(GetProcessHeap(), 0, (lstrlenW(path) + 1) * sizeof(WCHAR)); CHECK_ENOUGH_MEMORY(parser->key_name); lstrcpyW(parser->key_name, path); } else parser->hkey = NULL; return res; } 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[] = {'R','E','G','E','D','I','T',0}; static const WCHAR header_40[] = {'R','E','G','E','D','I','T','4',0}; static const WCHAR header_50[] = {'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',0}; while (*s && (*s == ' ' || *s == '\t')) s++; if (!strcmpW(s, header_31)) return REG_VERSION_31; if (!strcmpW(s, header_40)) return REG_VERSION_40; if (!strcmpW(s, header_50)) 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 (!strncmpW(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 = HeapAlloc(GetProcessHeap(), 0, (lstrlenW(line) + 3) * sizeof(WCHAR)); CHECK_ENOUGH_MEMORY(header); header[0] = parser->two_wchars[0]; header[1] = parser->two_wchars[1]; lstrcpyW(header + 2, line); parser->reg_version = parse_file_header(header); HeapFree(GetProcessHeap(), 0, 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[] = {'H','K','E','Y','_','C','L','A','S','S','E','S','_','R','O','O','T'}; unsigned int key_end = 0; if (!(line = get_line(parser->file))) return NULL; if (strncmpW(line, hkcr, ARRAY_SIZE(hkcr))) goto invalid; /* get key name */ while (line[key_end] && !isspaceW(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); goto invalid; } 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; invalid: set_state(parser, PARSE_WIN31_LINE); return line; } /* 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: set_state(parser, LINE_START); 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 = strrchrW(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; 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) { 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; if (parser->value_name) { HeapFree(GetProcessHeap(), 0, 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 = HeapAlloc(GetProcessHeap(), 0, (lstrlenW(val_name) + 1) * sizeof(WCHAR)); CHECK_ENOUGH_MEMORY(parser->value_name); lstrcpyW(parser->value_name, val_name); set_state(parser, DATA_START); return p; invalid: set_state(parser, LINE_START); return p; } /* 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 = strlenW(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: parser->data = NULL; parser->data_size = 0; 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 = HeapAlloc(GetProcessHeap(), 0, sizeof(DWORD)); CHECK_ENOUGH_MEMORY(parser->data); if (!convert_hex_to_dword(line, parser->data)) goto invalid; parser->data_size = sizeof(DWORD); set_state(parser, SET_VALUE); return line; invalid: HeapFree(GetProcessHeap(), 0, parser->data); parser->data = NULL; parser->data_size = 0; 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 (!(parser->data = convert_hex_csv_to_hex(line, &parser->data_size))) goto invalid; if (!parser->is_unicode && (parser->data_type == REG_EXPAND_SZ || parser->data_type == REG_MULTI_SZ)) { void *tmp = parser->data; parser->data = GetWideStringN(parser->data, parser->data_size, &parser->data_size); parser->data_size *= sizeof(WCHAR); HeapFree(GetProcessHeap(), 0, tmp); } set_state(parser, SET_VALUE); return line; invalid: HeapFree(GetProcessHeap(), 0, parser->data); parser->data = NULL; parser->data_size = 0; 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); if (parser->parse_type == REG_DWORD || parser->parse_type == REG_BINARY) HeapFree(GetProcessHeap(), 0, parser->data); parser->data = NULL; parser->data_size = 0; 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; HeapFree(GetProcessHeap(), 0, lineW); if (!fp) goto cleanup; if (!size) { size = REG_VAL_BUF_SIZE; buf = HeapAlloc(GetProcessHeap(), 0, size); CHECK_ENOUGH_MEMORY(buf); *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) { char *new_buf = HeapReAlloc(GetProcessHeap(), 0, buf, size * 2); CHECK_ENOUGH_MEMORY(new_buf); buf = new_buf; size *= 2; } 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; if (p > buf && *(p - 1) == '\\') { while (*next == ' ' || *next == '\t') next++; memmove(p - 1, next, strlen(next) + 1); next = line; continue; } if (*line == ';' || *line == '#') { line = next; continue; } lineW = GetWideString(line); return lineW; } cleanup: lineW = NULL; if (size) HeapFree(GetProcessHeap(), 0, 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 = HeapAlloc(GetProcessHeap(), 0, size * sizeof(WCHAR)); CHECK_ENOUGH_MEMORY(buf); *buf = 0; next = buf; } line = next; while (next) { static const WCHAR line_endings[] = {'\r','\n',0}; WCHAR *p = strpbrkW(line, line_endings); if (!p) { size_t len, count; len = strlenW(next); memmove(buf, next, (len + 1) * sizeof(WCHAR)); if (size - len < 3) { WCHAR *new_buf = HeapReAlloc(GetProcessHeap(), 0, buf, (size * 2) * sizeof(WCHAR)); CHECK_ENOUGH_MEMORY(new_buf); buf = new_buf; size *= 2; } 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; if (p > buf && *(p - 1) == '\\') { while (*next == ' ' || *next == '\t') next++; memmove(p - 1, next, (strlenW(next) + 1) * sizeof(WCHAR)); next = line; continue; } if (*line == ';' || *line == '#') { line = next; continue; } return line; } cleanup: if (size) HeapFree(GetProcessHeap(), 0, buf); size = 0; return NULL; } /****************************************************************************** * Checks whether the buffer has enough room for the string or required size. * Resizes the buffer if necessary. * * Parameters: * buffer - pointer to a buffer for string * len - current length of the buffer in characters. * required_len - length of the string to place to the buffer in characters. * The length does not include the terminating null character. */ static void REGPROC_resize_char_buffer(WCHAR **buffer, DWORD *len, DWORD required_len) { required_len++; if (required_len > *len) { *len = required_len; if (!*buffer) *buffer = HeapAlloc(GetProcessHeap(), 0, *len * sizeof(**buffer)); else *buffer = HeapReAlloc(GetProcessHeap(), 0, *buffer, *len * sizeof(**buffer)); CHECK_ENOUGH_MEMORY(*buffer); } } /****************************************************************************** * Same as REGPROC_resize_char_buffer() but on a regular buffer. * * Parameters: * buffer - pointer to a buffer * len - current size of the buffer in bytes * required_size - size of the data to place in the buffer in bytes */ static void REGPROC_resize_binary_buffer(BYTE **buffer, DWORD *size, DWORD required_size) { if (required_size > *size) { *size = required_size; if (!*buffer) *buffer = HeapAlloc(GetProcessHeap(), 0, *size); else *buffer = HeapReAlloc(GetProcessHeap(), 0, *buffer, *size); CHECK_ENOUGH_MEMORY(*buffer); } } /****************************************************************************** * Prints string str to file */ static void REGPROC_export_string(WCHAR **line_buf, DWORD *line_buf_size, DWORD *line_len, WCHAR *str, DWORD str_len) { DWORD i, pos; DWORD extra = 0; REGPROC_resize_char_buffer(line_buf, line_buf_size, *line_len + str_len + 10); /* escaping characters */ pos = *line_len; for (i = 0; i < str_len; i++) { WCHAR c = str[i]; switch (c) { case '\n': extra++; REGPROC_resize_char_buffer(line_buf, line_buf_size, *line_len + str_len + extra); (*line_buf)[pos++] = '\\'; (*line_buf)[pos++] = 'n'; break; case '\r': extra++; REGPROC_resize_char_buffer(line_buf, line_buf_size, *line_len + str_len + extra); (*line_buf)[pos++] = '\\'; (*line_buf)[pos++] = 'r'; break; case '\\': case '"': extra++; REGPROC_resize_char_buffer(line_buf, line_buf_size, *line_len + str_len + extra); (*line_buf)[pos++] = '\\'; /* Fall through */ default: (*line_buf)[pos++] = c; break; } } (*line_buf)[pos] = '\0'; *line_len = pos; } static void REGPROC_export_binary(WCHAR **line_buf, DWORD *line_buf_size, DWORD *line_len, DWORD type, BYTE *value, DWORD value_size, BOOL unicode) { DWORD hex_pos, data_pos; const WCHAR *hex_prefix; const WCHAR hex[] = {'h','e','x',':',0}; WCHAR hex_buf[17]; const WCHAR concat[] = {'\\','\r','\n',' ',' ',0}; DWORD concat_prefix, concat_len; const WCHAR newline[] = {'\r','\n',0}; CHAR* value_multibyte = NULL; if (type == REG_BINARY) { hex_prefix = hex; } else { const WCHAR hex_format[] = {'h','e','x','(','%','x',')',':',0}; hex_prefix = hex_buf; sprintfW(hex_buf, hex_format, type); if ((type == REG_SZ || type == REG_EXPAND_SZ || type == REG_MULTI_SZ) && !unicode) { value_multibyte = GetMultiByteStringN((WCHAR*)value, value_size / sizeof(WCHAR), &value_size); value = (BYTE*)value_multibyte; } } concat_len = lstrlenW(concat); concat_prefix = 2; hex_pos = *line_len; *line_len += lstrlenW(hex_prefix); data_pos = *line_len; *line_len += value_size * 3; /* - The 2 spaces that concat places at the start of the * line effectively reduce the space available for data. * - If the value name and hex prefix are very long * ( > REG_FILE_HEX_LINE_LEN) or *line_len divides * without a remainder then we may overestimate * the needed number of lines by one. But that's ok. * - The trailing '\r' takes the place of a comma so * we only need to add 1 for the trailing '\n' */ *line_len += *line_len / (REG_FILE_HEX_LINE_LEN - concat_prefix) * concat_len + 1; REGPROC_resize_char_buffer(line_buf, line_buf_size, *line_len); lstrcpyW(*line_buf + hex_pos, hex_prefix); if (value_size) { const WCHAR format[] = {'%','0','2','x',0}; DWORD i, column; column = data_pos; /* no line wrap yet */ i = 0; while (1) { sprintfW(*line_buf + data_pos, format, (unsigned int)value[i]); data_pos += 2; if (++i == value_size) break; (*line_buf)[data_pos++] = ','; column += 3; /* wrap the line */ if (column >= REG_FILE_HEX_LINE_LEN) { lstrcpyW(*line_buf + data_pos, concat); data_pos += concat_len; column = concat_prefix; } } } lstrcpyW(*line_buf + data_pos, newline); HeapFree(GetProcessHeap(), 0, value_multibyte); } /****************************************************************************** * Writes the given line to a file, in multi-byte or wide characters */ static void REGPROC_write_line(FILE *file, const WCHAR* str, BOOL unicode) { if(unicode) { fwrite(str, sizeof(WCHAR), lstrlenW(str), file); } else { char* strA = GetMultiByteString(str); fputs(strA, file); HeapFree(GetProcessHeap(), 0, strA); } } /****************************************************************************** * Writes contents of the registry key to the specified file stream. * * Parameters: * file - writable file stream to export registry branch to. * key - registry branch to export. * reg_key_name_buf - name of the key with registry class. * Is resized if necessary. * reg_key_name_size - length of the buffer for the registry class in characters. * val_name_buf - buffer for storing value name. * Is resized if necessary. * val_name_size - length of the buffer for storing value names in characters. * val_buf - buffer for storing values while extracting. * Is resized if necessary. * val_size - size of the buffer for storing values in bytes. */ static void export_hkey(FILE *file, HKEY key, WCHAR **reg_key_name_buf, DWORD *reg_key_name_size, WCHAR **val_name_buf, DWORD *val_name_size, BYTE **val_buf, DWORD *val_size, WCHAR **line_buf, DWORD *line_buf_size, BOOL unicode) { DWORD max_sub_key_len; DWORD max_val_name_len; DWORD max_val_size; DWORD curr_len; DWORD i; LONG ret; WCHAR key_format[] = {'\r','\n','[','%','s',']','\r','\n',0}; /* get size information and resize the buffers if necessary */ if (RegQueryInfoKeyW(key, NULL, NULL, NULL, NULL, &max_sub_key_len, NULL, NULL, &max_val_name_len, &max_val_size, NULL, NULL ) != ERROR_SUCCESS) return; curr_len = strlenW(*reg_key_name_buf); REGPROC_resize_char_buffer(reg_key_name_buf, reg_key_name_size, max_sub_key_len + curr_len + 1); REGPROC_resize_char_buffer(val_name_buf, val_name_size, max_val_name_len); REGPROC_resize_binary_buffer(val_buf, val_size, max_val_size); REGPROC_resize_char_buffer(line_buf, line_buf_size, lstrlenW(*reg_key_name_buf) + 4); /* output data for the current key */ sprintfW(*line_buf, key_format, *reg_key_name_buf); REGPROC_write_line(file, *line_buf, unicode); /* print all the values */ i = 0; for (;;) { DWORD value_type; DWORD val_name_size1 = *val_name_size; DWORD val_size1 = *val_size; ret = RegEnumValueW(key, i, *val_name_buf, &val_name_size1, NULL, &value_type, *val_buf, &val_size1); if (ret == ERROR_MORE_DATA) { /* Increase the size of the buffers and retry */ REGPROC_resize_char_buffer(val_name_buf, val_name_size, val_name_size1); REGPROC_resize_binary_buffer(val_buf, val_size, val_size1); } else if (ret == ERROR_SUCCESS) { DWORD line_len; i++; if ((*val_name_buf)[0]) { const WCHAR val_start[] = {'"','%','s','"','=',0}; line_len = 0; REGPROC_export_string(line_buf, line_buf_size, &line_len, *val_name_buf, lstrlenW(*val_name_buf)); REGPROC_resize_char_buffer(val_name_buf, val_name_size, lstrlenW(*line_buf) + 1); lstrcpyW(*val_name_buf, *line_buf); line_len = 3 + lstrlenW(*val_name_buf); REGPROC_resize_char_buffer(line_buf, line_buf_size, line_len); sprintfW(*line_buf, val_start, *val_name_buf); } else { const WCHAR std_val[] = {'@','=',0}; line_len = 2; REGPROC_resize_char_buffer(line_buf, line_buf_size, line_len); lstrcpyW(*line_buf, std_val); } switch (value_type) { case REG_SZ: { WCHAR* wstr = (WCHAR*)*val_buf; if (val_size1 < sizeof(WCHAR) || val_size1 % sizeof(WCHAR) || wstr[val_size1 / sizeof(WCHAR) - 1]) { REGPROC_export_binary(line_buf, line_buf_size, &line_len, value_type, *val_buf, val_size1, unicode); } else { const WCHAR start[] = {'"',0}; const WCHAR end[] = {'"','\r','\n',0}; DWORD len; len = lstrlenW(start); REGPROC_resize_char_buffer(line_buf, line_buf_size, line_len + len); lstrcpyW(*line_buf + line_len, start); line_len += len; REGPROC_export_string(line_buf, line_buf_size, &line_len, wstr, lstrlenW(wstr)); REGPROC_resize_char_buffer(line_buf, line_buf_size, line_len + lstrlenW(end)); lstrcpyW(*line_buf + line_len, end); } break; } case REG_DWORD: { WCHAR format[] = {'d','w','o','r','d',':','%','0','8','x','\r','\n',0}; REGPROC_resize_char_buffer(line_buf, line_buf_size, line_len + 15); sprintfW(*line_buf + line_len, format, *((DWORD *)*val_buf)); break; } case REG_NONE: case REG_EXPAND_SZ: case REG_MULTI_SZ: case REG_BINARY: default: REGPROC_export_binary(line_buf, line_buf_size, &line_len, value_type, *val_buf, val_size1, unicode); } REGPROC_write_line(file, *line_buf, unicode); } else break; } i = 0; (*reg_key_name_buf)[curr_len] = '\\'; for (;;) { DWORD buf_size = *reg_key_name_size - curr_len - 1; ret = RegEnumKeyExW(key, i, *reg_key_name_buf + curr_len + 1, &buf_size, NULL, NULL, NULL, NULL); if (ret == ERROR_MORE_DATA) { /* Increase the size of the buffer and retry */ REGPROC_resize_char_buffer(reg_key_name_buf, reg_key_name_size, curr_len + 1 + buf_size); } else if (ret == ERROR_SUCCESS) { HKEY subkey; i++; if (RegOpenKeyW(key, *reg_key_name_buf + curr_len + 1, &subkey) == ERROR_SUCCESS) { export_hkey(file, subkey, reg_key_name_buf, reg_key_name_size, val_name_buf, val_name_size, val_buf, val_size, line_buf, line_buf_size, unicode); RegCloseKey(subkey); } else break; } else break; } (*reg_key_name_buf)[curr_len] = '\0'; } /****************************************************************************** * Open file in binary mode for export. */ static FILE *REGPROC_open_export_file(WCHAR *file_name, BOOL unicode) { FILE *file; WCHAR dash = '-'; if (strncmpW(file_name,&dash,1)==0) { file=stdout; _setmode(_fileno(file), _O_BINARY); } else { WCHAR wb_mode[] = {'w','b',0}; WCHAR regedit[] = {'r','e','g','e','d','i','t',0}; file = _wfopen(file_name, wb_mode); if (!file) { _wperror(regedit); output_message(STRING_CANNOT_OPEN_FILE, file_name); exit(1); } } if(unicode) { const BYTE unicode_seq[] = {0xff,0xfe}; 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'}; fwrite(unicode_seq, sizeof(BYTE), sizeof(unicode_seq)/sizeof(unicode_seq[0]), file); fwrite(header, sizeof(WCHAR), sizeof(header)/sizeof(header[0]), file); } else { fputs("REGEDIT4\r\n", file); } return file; } /****************************************************************************** * Writes contents of the registry key to the specified file stream. * * Parameters: * file_name - name of a file to export registry branch to. * reg_key_name - registry branch to export. The whole registry is exported if * reg_key_name is NULL or contains an empty string. */ BOOL export_registry_key(WCHAR *file_name, WCHAR *reg_key_name, DWORD format) { WCHAR *reg_key_name_buf; WCHAR *val_name_buf; BYTE *val_buf; WCHAR *line_buf; DWORD reg_key_name_size = KEY_MAX_LEN; DWORD val_name_size = KEY_MAX_LEN; DWORD val_size = REG_VAL_BUF_SIZE; DWORD line_buf_size = KEY_MAX_LEN + REG_VAL_BUF_SIZE; FILE *file = NULL; BOOL unicode = (format == REG_FORMAT_5); reg_key_name_buf = HeapAlloc(GetProcessHeap(), 0, reg_key_name_size * sizeof(*reg_key_name_buf)); val_name_buf = HeapAlloc(GetProcessHeap(), 0, val_name_size * sizeof(*val_name_buf)); val_buf = HeapAlloc(GetProcessHeap(), 0, val_size); line_buf = HeapAlloc(GetProcessHeap(), 0, line_buf_size * sizeof(*line_buf)); CHECK_ENOUGH_MEMORY(reg_key_name_buf && val_name_buf && val_buf && line_buf); if (reg_key_name && reg_key_name[0]) { HKEY reg_key_class; WCHAR *branch_name = NULL; HKEY key; REGPROC_resize_char_buffer(®_key_name_buf, ®_key_name_size, lstrlenW(reg_key_name)); lstrcpyW(reg_key_name_buf, reg_key_name); /* open the specified key */ if (!(reg_key_class = parse_key_name(reg_key_name, &branch_name))) { output_message(STRING_INCORRECT_REG_CLASS, reg_key_name); exit(1); } if (!branch_name || !*branch_name) { /* no branch - registry class is specified */ file = REGPROC_open_export_file(file_name, unicode); export_hkey(file, reg_key_class, ®_key_name_buf, ®_key_name_size, &val_name_buf, &val_name_size, &val_buf, &val_size, &line_buf, &line_buf_size, unicode); } else if (RegOpenKeyW(reg_key_class, branch_name, &key) == ERROR_SUCCESS) { file = REGPROC_open_export_file(file_name, unicode); export_hkey(file, key, ®_key_name_buf, ®_key_name_size, &val_name_buf, &val_name_size, &val_buf, &val_size, &line_buf, &line_buf_size, unicode); RegCloseKey(key); } else { output_message(STRING_REG_KEY_NOT_FOUND, reg_key_name); } } else { unsigned int i; /* export all registry classes */ file = REGPROC_open_export_file(file_name, unicode); for (i = 0; i < ARRAY_SIZE(reg_class_keys); i++) { /* do not export HKEY_CLASSES_ROOT */ if (reg_class_keys[i] != HKEY_CLASSES_ROOT && reg_class_keys[i] != HKEY_CURRENT_USER && reg_class_keys[i] != HKEY_CURRENT_CONFIG && reg_class_keys[i] != HKEY_DYN_DATA) { lstrcpyW(reg_key_name_buf, reg_class_namesW[i]); export_hkey(file, reg_class_keys[i], ®_key_name_buf, ®_key_name_size, &val_name_buf, &val_name_size, &val_buf, &val_size, &line_buf, &line_buf_size, unicode); } } } if (file) { fclose(file); } HeapFree(GetProcessHeap(), 0, reg_key_name); HeapFree(GetProcessHeap(), 0, val_name_buf); HeapFree(GetProcessHeap(), 0, val_buf); HeapFree(GetProcessHeap(), 0, line_buf); return TRUE; } /****************************************************************************** * 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.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; if (parser.value_name) HeapFree(GetProcessHeap(), 0, 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))) { output_message(STRING_INCORRECT_REG_CLASS, reg_key_name); exit(1); } if (!*key_name) { output_message(STRING_DELETE_REG_CLASS_FAILED, reg_key_name); exit(1); } RegDeleteTreeW(key_class, key_name); }