328 lines
9.9 KiB
C
328 lines
9.9 KiB
C
/*
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* Windows regedit.exe registry editor implementation.
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*
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* Copyright 2002 Andriy Palamarchuk
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <ctype.h>
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#include <stdio.h>
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#include <windows.h>
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#include "regproc.h"
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static const char *usage =
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"Usage:\n"
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" regedit filename\n"
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" regedit /E filename [regpath]\n"
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" regedit /D regpath\n"
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"\n"
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"filename - registry file name\n"
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"regpath - name of the registry key\n"
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"\n"
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"When called without any switches, adds the content of the specified\n"
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"file to the registry\n"
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"\n"
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"Switches:\n"
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" /E - exports contents of the specified registry key to the specified\n"
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" file. Exports the whole registry if no key is specified.\n"
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" /D - deletes specified registry key\n"
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" /S - silent execution, can be used with any other switch.\n"
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" Default. The only existing mode, exists for compatibility with Windows regedit.\n"
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" /V - advanced mode, can be used with any other switch.\n"
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" Ignored, exists for compatibility with Windows regedit.\n"
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" /L - location of system.dat file. Can be used with any other switch.\n"
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" Ignored. Exists for compatibility with Windows regedit.\n"
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" /R - location of user.dat file. Can be used with any other switch.\n"
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" Ignored. Exists for compatibility with Windows regedit.\n"
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" /? - print this help. Any other switches are ignored.\n"
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" /C - create registry from file. Not implemented.\n"
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"\n"
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"The switches are case-insensitive, can be prefixed either by '-' or '/'.\n"
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"This program is command-line compatible with Microsoft Windows\n"
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"regedit.\n";
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typedef enum {
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ACTION_UNDEF, ACTION_ADD, ACTION_EXPORT, ACTION_DELETE
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} REGEDIT_ACTION;
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const CHAR *getAppName(void)
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{
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return "regedit";
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}
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/******************************************************************************
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* Copies file name from command line string to the buffer.
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* Rewinds the command line string pointer to the next non-space character
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* after the file name.
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* Buffer contains an empty string if no filename was found;
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*
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* params:
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* command_line - command line current position pointer
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* where *s[0] is the first symbol of the file name.
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* file_name - buffer to write the file name to.
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*/
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static void get_file_name(CHAR **command_line, CHAR *file_name)
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{
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CHAR *s = *command_line;
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int pos = 0; /* position of pointer "s" in *command_line */
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file_name[0] = 0;
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if (!s[0]) {
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return;
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}
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if (s[0] == '"') {
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s++;
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(*command_line)++;
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while(s[0] != '"') {
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if (!s[0]) {
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fprintf(stderr,"%s: Unexpected end of file name!\n",
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getAppName());
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exit(1);
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}
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s++;
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pos++;
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}
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} else {
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while(s[0] && !isspace(s[0])) {
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s++;
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pos++;
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}
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}
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memcpy(file_name, *command_line, pos * sizeof((*command_line)[0]));
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/* remove the last backslash */
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if (file_name[pos - 1] == '\\') {
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file_name[pos - 1] = '\0';
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} else {
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file_name[pos] = '\0';
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}
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if (s[0]) {
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s++;
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pos++;
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}
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while(s[0] && isspace(s[0])) {
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s++;
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pos++;
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}
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(*command_line) += pos;
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}
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static BOOL PerformRegAction(REGEDIT_ACTION action, LPSTR s)
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{
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switch (action) {
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case ACTION_ADD: {
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CHAR filename[MAX_PATH];
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FILE *reg_file;
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get_file_name(&s, filename);
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if (!filename[0]) {
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fprintf(stderr,"%s: No file name was specified\n", getAppName());
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fprintf(stderr,usage);
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exit(1);
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}
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while(filename[0]) {
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char* realname = NULL;
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if (strcmp(filename, "-") == 0)
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{
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reg_file = stdin;
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}
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else
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{
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int size;
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size = SearchPathA(NULL, filename, NULL, 0, NULL, NULL);
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if (size > 0)
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{
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realname = HeapAlloc(GetProcessHeap(), 0, size);
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size = SearchPathA(NULL, filename, NULL, size, realname, NULL);
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}
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if (size == 0)
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{
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fprintf(stderr, "%s: File not found \"%s\" (%d)\n",
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getAppName(), filename, GetLastError());
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exit(1);
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}
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reg_file = fopen(realname, "r");
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if (reg_file == NULL)
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{
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perror("");
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fprintf(stderr, "%s: Can't open file \"%s\"\n", getAppName(), filename);
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exit(1);
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}
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}
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import_registry_file(reg_file);
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if (realname)
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{
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HeapFree(GetProcessHeap(),0,realname);
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fclose(reg_file);
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}
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get_file_name(&s, filename);
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}
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break;
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}
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case ACTION_DELETE: {
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CHAR reg_key_name[KEY_MAX_LEN];
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get_file_name(&s, reg_key_name);
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if (!reg_key_name[0]) {
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fprintf(stderr,"%s: No registry key was specified for removal\n",
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getAppName());
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fprintf(stderr,usage);
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exit(1);
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} else
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{
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WCHAR* reg_key_nameW = GetWideString(reg_key_name);
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delete_registry_key(reg_key_nameW);
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HeapFree(GetProcessHeap(), 0, reg_key_nameW);
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}
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break;
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}
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case ACTION_EXPORT: {
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CHAR filename[MAX_PATH];
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WCHAR* filenameW;
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filename[0] = '\0';
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get_file_name(&s, filename);
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if (!filename[0]) {
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fprintf(stderr,"%s: No file name was specified\n", getAppName());
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fprintf(stderr,usage);
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exit(1);
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}
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filenameW = GetWideString(filename);
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if (s[0]) {
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CHAR reg_key_name[KEY_MAX_LEN];
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WCHAR* reg_key_nameW;
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get_file_name(&s, reg_key_name);
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reg_key_nameW = GetWideString(reg_key_name);
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export_registry_key(filenameW, reg_key_nameW, REG_FORMAT_4);
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HeapFree(GetProcessHeap(), 0, reg_key_nameW);
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} else {
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export_registry_key(filenameW, NULL, REG_FORMAT_4);
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}
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HeapFree(GetProcessHeap(), 0, filenameW);
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break;
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}
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default:
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fprintf(stderr,"%s: Unhandled action!\n", getAppName());
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exit(1);
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break;
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}
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return TRUE;
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}
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/**
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* Process unknown switch.
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*
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* Params:
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* chu - the switch character in upper-case.
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* s - the command line string where s points to the switch character.
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*/
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static void error_unknown_switch(char chu, char *s)
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{
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if (isalpha(chu)) {
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fprintf(stderr,"%s: Undefined switch /%c!\n", getAppName(), chu);
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} else {
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fprintf(stderr,"%s: Alphabetic character is expected after '%c' "
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"in switch specification\n", getAppName(), *(s - 1));
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}
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exit(1);
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}
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BOOL ProcessCmdLine(LPSTR lpCmdLine)
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{
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REGEDIT_ACTION action = ACTION_UNDEF;
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LPSTR s = lpCmdLine; /* command line pointer */
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CHAR ch = *s; /* current character */
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while (ch && ((ch == '-') || (ch == '/'))) {
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char chu;
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char ch2;
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s++;
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ch = *s;
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if (!ch || isspace(ch))
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{
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/* '-' is a file name. It indicates we should use stdin */
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s--;
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break;
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}
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ch2 = *(s+1);
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chu = toupper(ch);
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if (!ch2 || isspace(ch2)) {
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if (chu == 'S' || chu == 'V') {
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/* ignore these switches */
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} else {
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switch (chu) {
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case 'D':
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action = ACTION_DELETE;
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break;
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case 'E':
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action = ACTION_EXPORT;
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break;
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case '?':
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fprintf(stderr,usage);
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exit(0);
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break;
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default:
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error_unknown_switch(chu, s);
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break;
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}
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}
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s++;
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} else {
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if (ch2 == ':') {
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switch (chu) {
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case 'L':
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/* fall through */
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case 'R':
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s += 2;
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while (*s && !isspace(*s)) {
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s++;
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}
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break;
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default:
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error_unknown_switch(chu, s);
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break;
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}
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} else {
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/* this is a file name, starting from '/' */
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s--;
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break;
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}
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}
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/* skip spaces to the next parameter */
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ch = *s;
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while (ch && isspace(ch)) {
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s++;
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ch = *s;
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}
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}
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if (*s && action == ACTION_UNDEF)
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action = ACTION_ADD;
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if (action == ACTION_UNDEF)
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return FALSE;
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return PerformRegAction(action, s);
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}
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