main.cc

   1 /*
   2  * Copyright (c) 2000, Red Hat, Inc.
   3  *
   4  *     This program is free software; you can redistribute it and/or modify
   5  *     it under the terms of the GNU General Public License as published by
   6  *     the Free Software Foundation; either version 2 of the License, or
   7  *     (at your option) any later version.
   8  *
   9  *     A copy of the GNU General Public License can be found at
  10  *     http://www.gnu.org/
  11  *
  12  * Written by DJ Delorie <dj@cygnus.com>
  13  *
  14  */
  15
  16 /* OK, here's how this works.  Each of the steps needed for install -
  17    dialogs, downloads, installs - are in their own files and have some
  18    "do_*" function (prototype in dialog.h) and a resource id (IDD_* or
  19    IDD_S_* in resource.h) for that step.  Each step is responsible for
  20    selecting the next step!  See the NEXT macro in dialog.h.  Note
  21    that the IDD_S_* ids are fake; those are for steps that don't
  22    really have a controlling dialog (some have progress dialogs, but
  23    those don't count, although they could).  Replace the IDD_S_* with
  24    IDD_* if you create a real dialog for those steps. */
  25
  26 #if 0
  27 static const char *cvsid =
  28   "\n%%% $Id$\n";
  29 #endif
  30
  31 #include "win32.h"
  32 #include <commctrl.h>
  33
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36 #include "resource.h"
  37 #include "dialog.h"
  38 #include "state.h"
  39 #include "msg.h"
  40 #include "find.h"
  41 #include "mount.h"
  42 #include "log.h"
  43 #include "version.h"
  44
  45 #include "port.h"
  46 #include "proppage.h"
  47 #include "propsheet.h"
  48
  49 // Page class headers
  50 #include "splash.h"
  51 #include "source.h"
  52 #include "root.h"
  53 #include "localdir.h"
  54 #include "net.h"
  55 #include "site.h"
  56 #include "choose.h"
  57 #include "threebar.h"
  58 #include "desktop.h"
  59
  60 int next_dialog;
  61 int exit_msg = 0;
  62
  63 HINSTANCE hinstance;
  64
  65 /* Maximum size of a SID on NT/W2K. */
  66 #define MAX_SID_LEN     40
  67
  68 /* Computes the size of an ACL in relation to the number of ACEs it
  69    should contain. */
  70 #define TOKEN_ACL_SIZE(cnt) (sizeof(ACL) + \
  71                              (cnt) * (sizeof(ACCESS_ALLOWED_ACE) + MAX_SID_LEN))
  72
  73 #define iswinnt         (GetVersion() < 0x80000000)
  74
  75 void
  76 set_default_dacl ()
  77 {
  78   /* To assure that the created files have a useful ACL, the
  79      default DACL in the process token is set to full access to
  80      everyone. This applies to files and subdirectories created
  81      in directories which don't propagate permissions to child
  82      objects. */
  83
  84   /* Create a buffer which has enough room to contain the TOKEN_DEFAULT_DACL
  85      structure plus an ACL with one ACE. */
  86   char buf[sizeof (TOKEN_DEFAULT_DACL) + TOKEN_ACL_SIZE (1)];
  87
  88   /* First initialize the TOKEN_DEFAULT_DACL structure. */
  89   PTOKEN_DEFAULT_DACL dacl = (PTOKEN_DEFAULT_DACL) buf;
  90   dacl->DefaultDacl = (PACL) (buf + sizeof *dacl);
  91
  92   /* Initialize the ACL for containing one ACE. */
  93   if (!InitializeAcl (dacl->DefaultDacl, TOKEN_ACL_SIZE (1), ACL_REVISION))
  94     {
  95       log (LOG_TIMESTAMP, "InitializeAcl() failed: %lu", GetLastError ());
  96       return;
  97     }
  98
  99   /* Get the SID for "Everyone". */
 100   PSID sid;
 101   SID_IDENTIFIER_AUTHORITY sid_auth = { SECURITY_WORLD_SID_AUTHORITY };
 102   if (!AllocateAndInitializeSid (&sid_auth, 1, 0, 0, 0, 0, 0, 0, 0, 0, &sid))
 103     {
 104       log (LOG_TIMESTAMP, "AllocateAndInitializeSid() failed: %lu",
 105            GetLastError ());
 106       return;
 107     }
 108
 109   /* Create the ACE which grants full access to "Everyone" and store it
 110      in dacl->DefaultDacl. */
 111   if (!AddAccessAllowedAce
 112       (dacl->DefaultDacl, ACL_REVISION, GENERIC_ALL, sid))
 113     {
 114       log (LOG_TIMESTAMP, "AddAccessAllowedAce() failed: %lu",
 115            GetLastError ());
 116       goto out;
 117     }
 118
 119   /* Get the processes access token. */
 120   HANDLE token;
 121   if (!OpenProcessToken (GetCurrentProcess (),
 122                          TOKEN_READ | TOKEN_ADJUST_DEFAULT, &token))
 123     {
 124       log (LOG_TIMESTAMP, "OpenProcessToken() failed: %lu", GetLastError ());
 125       goto out;
 126     }
 127
 128   /* Set the default DACL to the above computed ACL. */
 129   if (!SetTokenInformation (token, TokenDefaultDacl, dacl, sizeof buf))
 130     log (LOG_TIMESTAMP, "OpenProcessToken() failed: %lu", GetLastError ());
 131
 132   /* Close token handle. */
 133   CloseHandle (token);
 134
 135 out:
 136   /* Free memory occupied by the "Everyone" SID. */
 137   FreeSid (sid);
 138 }
 139
 140 // Other threads talk to this page, so we need to have it externable.
 141 ThreeBarProgressPage Progress;
 142
 143 int WINAPI
 144 WinMain (HINSTANCE h,
 145          HINSTANCE hPrevInstance, LPSTR command_line, int cmd_show)
 146 {
 147   hinstance = h;
 148
 149   next_dialog = IDD_SPLASH;
 150
 151   log (LOG_TIMESTAMP, "Starting cygwin install, version %s", version);
 152
 153   SplashPage Splash;
 154   SourcePage Source;
 155   RootPage Root;
 156   LocalDirPage LocalDir;
 157   NetPage Net;
 158   SitePage Site;
 159   ChooserPage Chooser;
 160   DesktopSetupPage Desktop;
 161   PropSheet MainWindow;
 162
 163   char cwd[_MAX_PATH];
 164   GetCurrentDirectory (sizeof (cwd), cwd);
 165   local_dir = strdup (cwd);
 166   log (0, "Current Directory: %s", cwd);
 167
 168   char **argv;
 169   int argc;
 170   log (LOG_TIMESTAMP, "Command line parameters\n");
 171   for (argc = 0, argv = __argv; *argv; argv++)
 172     log (LOG_TIMESTAMP, "%d - '%s'\n", argc++, *argv);
 173   log (LOG_TIMESTAMP, "%d parameters passed\n", argc);
 174
 175   /* Set the default DACL only on NT/W2K. 9x/ME has no idea of access
 176      control lists and security at all. */
 177   if (iswinnt)
 178     set_default_dacl ();
 179
 180   // Initialize common controls
 181   InitCommonControls ();
 182
 183   // Init window class lib
 184   Window::SetAppInstance (h);
 185
 186   // Create pages
 187   Splash.Create ();
 188   Source.Create ();
 189   Root.Create ();
 190   LocalDir.Create ();
 191   Net.Create ();
 192   Site.Create ();
 193   Chooser.Create ();
 194   Progress.Create ();
 195   Desktop.Create ();
 196
 197   // Add pages to sheet
 198   MainWindow.AddPage (&Splash);
 199   MainWindow.AddPage (&Source);
 200   MainWindow.AddPage (&Root);
 201   MainWindow.AddPage (&LocalDir);
 202   MainWindow.AddPage (&Net);
 203   MainWindow.AddPage (&Site);
 204   MainWindow.AddPage (&Chooser);
 205   MainWindow.AddPage (&Progress);
 206   MainWindow.AddPage (&Desktop);
 207
 208   // Create the PropSheet main window
 209   MainWindow.Create ();
 210
 211   exit_setup (0);
 212   /* Keep gcc happy :} */
 213   return 0;
 214 }