programs/uninstaller/main.c

   1 /*
   2  * Uninstaller
   3  *
   4  * Copyright 2000 Andreas Mohr
   5  * Copyright 2004 Hannu Valtonen
   6  * Copyright 2005 Jonathan Ernst
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  *
  22  */
  23
  24 #include <string.h>
  25 #include <windows.h>
  26 #include <shlwapi.h>
  27 #include "resource.h"
  28 #include "regstr.h"
  29 #include "wine/debug.h"
  30
  31 WINE_DEFAULT_DEBUG_CHANNEL(uninstaller);
  32
  33 extern void WINAPI Control_RunDLL(HWND hWnd, HINSTANCE hInst, LPCSTR cmd, DWORD nCmdShow);
  34
  35 typedef struct {
  36     HKEY  root;
  37     WCHAR *key;
  38     WCHAR *descr;
  39     WCHAR *command;
  40     int active;
  41 } uninst_entry;
  42 static uninst_entry *entries = NULL;
  43 static unsigned int numentries = 0;
  44 static int oldsel = -1;
  45 static WCHAR *sFilter;
  46
  47 static int FetchUninstallInformation(void);
  48 static void UninstallProgram(void);
  49 static int cmp_by_name(const void *a, const void *b);
  50
  51 static const WCHAR DisplayNameW[] = {'D','i','s','p','l','a','y','N','a','m','e',0};
  52 static const WCHAR PathUninstallW[] = {
  53         'S','o','f','t','w','a','r','e','\\',
  54         'M','i','c','r','o','s','o','f','t','\\',
  55         'W','i','n','d','o','w','s','\\',
  56         'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
  57         'U','n','i','n','s','t','a','l','l',0 };
  58 static const WCHAR UninstallCommandlineW[] = {'U','n','i','n','s','t','a','l','l','S','t','r','i','n','g',0};
  59 static const WCHAR WindowsInstallerW[] = {'W','i','n','d','o','w','s','I','n','s','t','a','l','l','e','r',0};
  60 static const WCHAR SystemComponentW[] = {'S','y','s','t','e','m','C','o','m','p','o','n','e','n','t',0};
  61
  62 static void output_writeconsole(const WCHAR *str, DWORD len)
  63 {
  64     DWORD written, ret, lenA;
  65     char *strA;
  66
  67     ret = WriteConsoleW(GetStdHandle(STD_OUTPUT_HANDLE), str, len, &written, NULL);
  68     if (ret) return;
  69
  70     /* WriteConsole fails if its output is redirected to a file.
  71      * If this occurs, we should use an OEM codepage and call WriteFile.
  72      */
  73     lenA = WideCharToMultiByte(GetConsoleOutputCP(), 0, str, len, NULL, 0, NULL, NULL);
  74     strA = HeapAlloc(GetProcessHeap(), 0, lenA);
  75     if (strA)
  76     {
  77         WideCharToMultiByte(GetConsoleOutputCP(), 0, str, len, strA, lenA, NULL, NULL);
  78         WriteFile(GetStdHandle(STD_OUTPUT_HANDLE), strA, lenA, &written, FALSE);
  79         HeapFree(GetProcessHeap(), 0, strA);
  80     }
  81 }
  82
  83 static void output_formatstring(const WCHAR *fmt, __ms_va_list va_args)
  84 {
  85     WCHAR *str;
  86     DWORD len;
  87
  88     SetLastError(NO_ERROR);
  89     len = FormatMessageW(FORMAT_MESSAGE_FROM_STRING|FORMAT_MESSAGE_ALLOCATE_BUFFER,
  90                          fmt, 0, 0, (LPWSTR)&str, 0, &va_args);
  91     if (len == 0 && GetLastError() != NO_ERROR)
  92     {
  93         WINE_FIXME("Could not format string: le=%u, fmt=%s\n", GetLastError(), wine_dbgstr_w(fmt));
  94         return;
  95     }
  96     output_writeconsole(str, len);
  97     LocalFree(str);
  98 }
  99
 100 static void WINAPIV output_message(unsigned int id, ...)
 101 {
 102     WCHAR fmt[1024];
 103     __ms_va_list va_args;
 104
 105     if (!LoadStringW(GetModuleHandleW(NULL), id, fmt, sizeof(fmt)/sizeof(fmt[0])))
 106     {
 107         WINE_FIXME("LoadString failed with %d\n", GetLastError());
 108         return;
 109     }
 110     __ms_va_start(va_args, id);
 111     output_formatstring(fmt, va_args);
 112     __ms_va_end(va_args);
 113 }
 114
 115 static void WINAPIV output_array(WCHAR *fmt, ...)
 116 {
 117     __ms_va_list va_args;
 118
 119     __ms_va_start(va_args, fmt);
 120     output_formatstring(fmt, va_args);
 121     __ms_va_end(va_args);
 122 }
 123
 124 /**
 125  * Used to output program list when used with --list
 126  */
 127 static void ListUninstallPrograms(void)
 128 {
 129     unsigned int i;
 130     static WCHAR fmtW[] = {'%','1','|','|','|','%','2','\n',0};
 131
 132     FetchUninstallInformation();
 133
 134     for (i=0; i < numentries; i++)
 135         output_array(fmtW, entries[i].key, entries[i].descr);
 136 }
 137
 138
 139 static void RemoveSpecificProgram(WCHAR *nameW)
 140 {
 141     unsigned int i;
 142
 143     FetchUninstallInformation();
 144
 145     for (i=0; i < numentries; i++)
 146     {
 147         if (CompareStringW(GetThreadLocale(), NORM_IGNORECASE, entries[i].key, -1, nameW, -1) == CSTR_EQUAL)
 148         {
 149             entries[i].active++;
 150             break;
 151         }
 152     }
 153
 154     if (i < numentries)
 155         UninstallProgram();
 156     else
 157         output_message(STRING_NO_APP_MATCH, nameW);
 158 }
 159
 160
 161 int wmain(int argc, WCHAR *argv[])
 162 {
 163     LPCWSTR token = NULL;
 164     static const WCHAR helpW[] = { '-','-','h','e','l','p',0 };
 165     static const WCHAR listW[] = { '-','-','l','i','s','t',0 };
 166     static const WCHAR removeW[] = { '-','-','r','e','m','o','v','e',0 };
 167     int i = 1;
 168
 169     while( i<argc )
 170     {
 171         token = argv[i++];
 172
 173         if( !lstrcmpW( token, helpW ) )
 174         {
 175             output_message(STRING_HEADER);
 176             output_message(STRING_USAGE);
 177             return 0;
 178         }
 179         else if( !lstrcmpW( token, listW ) )
 180         {
 181             ListUninstallPrograms();
 182             return 0;
 183         }
 184         else if( !lstrcmpW( token, removeW ) )
 185         {
 186             if( i >= argc )
 187             {
 188                 output_message(STRING_PARAMETER_REQUIRED);
 189                 return 1;
 190             }
 191
 192             RemoveSpecificProgram( argv[i++] );
 193             return 0;
 194         }
 195         else
 196         {
 197             output_message(STRING_INVALID_OPTION, token);
 198             return 1;
 199         }
 200     }
 201
 202     /* Start the GUI control panel */
 203     Control_RunDLL(GetDesktopWindow(), 0, "appwiz.cpl", SW_SHOW);
 204     return 1;
 205 }
 206
 207
 208 /**
 209  * Used to sort entries by name.
 210  */
 211 static int cmp_by_name(const void *a, const void *b)
 212 {
 213     return lstrcmpiW(((const uninst_entry *)a)->descr, ((const uninst_entry *)b)->descr);
 214 }
 215
 216
 217 /**
 218  * Fetch information from the uninstall key.
 219  */
 220 static int FetchFromRootKey(HKEY root)
 221 {
 222     HKEY hkeyApp;
 223     int i;
 224     DWORD sizeOfSubKeyName, displen, uninstlen, value, type, size;
 225     WCHAR subKeyName[256];
 226
 227     sizeOfSubKeyName = 255;
 228     for (i=0; RegEnumKeyExW( root, i, subKeyName, &sizeOfSubKeyName, NULL, NULL, NULL, NULL ) != ERROR_NO_MORE_ITEMS; ++i)
 229     {
 230         RegOpenKeyExW(root, subKeyName, 0, KEY_READ, &hkeyApp);
 231         size = sizeof(value);
 232         if (!RegQueryValueExW(hkeyApp, SystemComponentW, NULL, &type, (LPBYTE)&value, &size) &&
 233             type == REG_DWORD && value == 1)
 234         {
 235             RegCloseKey(hkeyApp);
 236             sizeOfSubKeyName = 255;
 237             continue;
 238         }
 239         if (!RegQueryValueExW(hkeyApp, DisplayNameW, NULL, NULL, NULL, &displen))
 240         {
 241             WCHAR *command;
 242
 243             size = sizeof(value);
 244             if (!RegQueryValueExW(hkeyApp, WindowsInstallerW, NULL, &type, (LPBYTE)&value, &size) &&
 245                 type == REG_DWORD && value == 1)
 246             {
 247                 static const WCHAR fmtW[] = {'m','s','i','e','x','e','c',' ','/','x','%','s',0};
 248                 command = HeapAlloc(GetProcessHeap(), 0, (lstrlenW(fmtW) + lstrlenW(subKeyName)) * sizeof(WCHAR));
 249                 wsprintfW(command, fmtW, subKeyName);
 250             }
 251             else if (!RegQueryValueExW(hkeyApp, UninstallCommandlineW, NULL, NULL, NULL, &uninstlen))
 252             {
 253                 command = HeapAlloc(GetProcessHeap(), 0, uninstlen);
 254                 RegQueryValueExW(hkeyApp, UninstallCommandlineW, 0, 0, (LPBYTE)command, &uninstlen);
 255             }
 256             else
 257             {
 258                 RegCloseKey(hkeyApp);
 259                 sizeOfSubKeyName = 255;
 260                 continue;
 261             }
 262             numentries++;
 263             entries = HeapReAlloc(GetProcessHeap(), 0, entries, numentries*sizeof(uninst_entry));
 264             entries[numentries-1].root = root;
 265             entries[numentries-1].key = HeapAlloc(GetProcessHeap(), 0, (lstrlenW(subKeyName)+1)*sizeof(WCHAR));
 266             lstrcpyW(entries[numentries-1].key, subKeyName);
 267             entries[numentries-1].descr = HeapAlloc(GetProcessHeap(), 0, displen);
 268             RegQueryValueExW(hkeyApp, DisplayNameW, 0, 0, (LPBYTE)entries[numentries-1].descr, &displen);
 269             entries[numentries-1].command = command;
 270             entries[numentries-1].active = 0;
 271             WINE_TRACE("allocated entry #%d: %s (%s), %s\n",
 272             numentries, wine_dbgstr_w(entries[numentries-1].key), wine_dbgstr_w(entries[numentries-1].descr), wine_dbgstr_w(entries[numentries-1].command));
 273             if(sFilter != NULL && StrStrIW(entries[numentries-1].descr,sFilter)==NULL)
 274                 numentries--;
 275         }
 276         RegCloseKey(hkeyApp);
 277         sizeOfSubKeyName = 255;
 278     }
 279     return 1;
 280
 281 }
 282
 283 static int FetchUninstallInformation(void)
 284 {
 285     static const BOOL is_64bit = sizeof(void *) > sizeof(int);
 286     int rc = 0;
 287     HKEY root;
 288
 289     numentries = 0;
 290     oldsel = -1;
 291     if (!entries)
 292         entries = HeapAlloc(GetProcessHeap(), 0, sizeof(uninst_entry));
 293
 294     if (!RegOpenKeyExW(HKEY_LOCAL_MACHINE, PathUninstallW, 0, KEY_READ, &root))
 295     {
 296         rc |= FetchFromRootKey(root);
 297         RegCloseKey(root);
 298     }
 299     if (is_64bit &&
 300         !RegOpenKeyExW(HKEY_LOCAL_MACHINE, PathUninstallW, 0, KEY_READ|KEY_WOW64_32KEY, &root))
 301     {
 302         rc |= FetchFromRootKey(root);
 303         RegCloseKey(root);
 304     }
 305     if (!RegOpenKeyExW(HKEY_CURRENT_USER, PathUninstallW, 0, KEY_READ, &root))
 306     {
 307         rc |= FetchFromRootKey(root);
 308         RegCloseKey(root);
 309     }
 310
 311     qsort(entries, numentries, sizeof(uninst_entry), cmp_by_name);
 312     return rc;
 313 }
 314
 315 static void UninstallProgram(void)
 316 {
 317     unsigned int i;
 318     WCHAR errormsg[1024];
 319     BOOL res;
 320     STARTUPINFOW si;
 321     PROCESS_INFORMATION info;
 322     DWORD exit_code;
 323     HKEY hkey;
 324     for (i=0; i < numentries; i++)
 325     {
 326         if (!(entries[i].active)) /* don't uninstall this one */
 327             continue;
 328         WINE_TRACE("uninstalling %s\n", wine_dbgstr_w(entries[i].descr));
 329         memset(&si, 0, sizeof(STARTUPINFOW));
 330         si.cb = sizeof(STARTUPINFOW);
 331         si.wShowWindow = SW_NORMAL;
 332         res = CreateProcessW(NULL, entries[i].command, NULL, NULL, FALSE, 0, NULL, NULL, &si, &info);
 333         if (res)
 334         {   /* wait for the process to exit */
 335             WaitForSingleObject(info.hProcess, INFINITE);
 336             res = GetExitCodeProcess(info.hProcess, &exit_code);
 337             WINE_TRACE("%d: %08x\n", res, exit_code);
 338         }
 339         else
 340         {
 341             WCHAR sAppName[MAX_STRING_LEN];
 342             WCHAR sUninstallFailed[MAX_STRING_LEN];
 343             HINSTANCE hInst = GetModuleHandleW(0);
 344
 345             LoadStringW(hInst, IDS_APPNAME, sAppName, sizeof(sAppName)/sizeof(WCHAR));
 346             LoadStringW(hInst, IDS_UNINSTALLFAILED, sUninstallFailed, sizeof(sUninstallFailed)/sizeof(WCHAR));
 347             wsprintfW(errormsg, sUninstallFailed, entries[i].command);
 348             if(MessageBoxW(0, errormsg, sAppName, MB_YESNO | MB_ICONQUESTION)==IDYES)
 349             {
 350                 /* delete the application's uninstall entry */
 351                 RegOpenKeyExW(entries[i].root, PathUninstallW, 0, KEY_READ, &hkey);
 352                 RegDeleteKeyW(hkey, entries[i].key);
 353                 RegCloseKey(hkey);
 354             }
 355         }
 356     }
 357     WINE_TRACE("finished uninstall phase.\n");
 358 }