//TODO: Expand this function to allow for artificially elevated limited users.
// For example, a limited user given the permission to write to HKLM
// (something that is normally forbidden).
bool OnlyUpdatingLocalUser()
{
// if installing
// - system folders
// - non-user registry
// - Windows Services
// - COM files
// then return false
// Also note how we're excluding the "BaseDir".
// This is because the base directory may or may not be in the userprofile
// directory (or otherwise writable by the user), thus it needs a separate check.
// Ditto for the "client.wyc" file.
if (((updateFrom.InstallingTo | InstallingTo.BaseDir) ^ InstallingTo.BaseDir) != 0)
{
return(false);
}
string userProfileFolder = SystemFolders.GetUserProfile();
// if the basedir isn't in the userprofile folder (C:\Users\UserName)
// OR
// if the folder isn't in the full control of the current user
// THEN
// we're not "only updating the local user
if ((updateFrom.InstallingTo & InstallingTo.BaseDir) != 0 && !(SystemFolders.IsDirInDir(userProfileFolder, baseDirectory) || HaveFolderPermissions(baseDirectory)))
{
return(false);
}
return(true);
}
//TODO: Expand this function to allow for artificially elevated limited users.
// For example, a limited user given the permission to write to HKLM
// (something that is normally forbidden).
bool OnlyUpdatingLocalUser()
{
// if installing
// - system folders
// - non-user registry
// - Windows Services
// - COM files
// then return false
// Also note how we're excluding the "BaseDir".
// This is because the base directory may or may not be in the userprofile
// directory (or otherwise writable by the user), thus it needs a separate check.
// Ditto for the "client.wyc" file.
if (((updateFrom.InstallingTo | InstallingTo.BaseDir) ^ InstallingTo.BaseDir) != 0)
{
return(false);
}
string userProfileFolder = SystemFolders.GetUserProfile();
// if the basedir isn't in the userprofile folder (C:\Users\UserName)
// OR
// if the folder isn't in the full control of the current user
// THEN
// we're not "only updating the local user
if ((updateFrom.InstallingTo & InstallingTo.BaseDir) != 0 && !(SystemFolders.IsDirInDir(userProfileFolder, baseDirectory) || HaveFolderPermissions(baseDirectory)))
{
return(false);
}
// if the client data file isn't in the userprofile folder (or otherwise writable)
// then bail out.
if (!(SystemFolders.IsFileInDirectory(userProfileFolder, clientFileLoc) || HaveFolderPermissions(Path.GetDirectoryName(clientFileLoc))))
{
return(false);
}
// when self-updating, if this client isn't in the userprofile folder
if ((SelfUpdateState == SelfUpdateState.WillUpdate ||
SelfUpdateState == SelfUpdateState.FullUpdate ||
SelfUpdateState == SelfUpdateState.Extracted) &&
!(SystemFolders.IsFileInDirectory(userProfileFolder, VersionTools.SelfLocation) ||
HaveFolderPermissions(Path.GetDirectoryName(VersionTools.SelfLocation))))
{
return(false);
}
return(true);
}
public AutoUpdaterInfo(string auID, string oldAUTempFolder)
{
autoUpdateID = auID;
// get the admin filename
filenames[0] = GetFilename();
#if CLIENT
// if tempFolder is not in ApplicationData, then we're updating on behalf of a limited user
if (oldAUTempFolder != null && !SystemFolders.IsDirInDir(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), oldAUTempFolder))
{
// AutoUpdateFiles are stored in: %appdata%\wyUpdate AU\
// The tempFolder is: %appdata%\wyUpdate AU\cache\AppGUID\
// get the limited user's AutoUpdate file
filenames[1] = Path.Combine(oldAUTempFolder, "..\\..\\" + AutoUpdateID + ".autoupdate");
// check if LimitedUser AutoUpdateFile exists
if (!File.Exists(filenames[1]))
{
filenames[1] = null;
}
}
#endif
bool failedToLoad;
bool firstFailed = false;
int retriedTimes = 0;
while (true)
{
try
{
// try to load the AutoUpdatefile for limited user
if (filenames[1] != null && !firstFailed)
{
Load(filenames[1]);
}
else // load the admin user
{
Load(filenames[0]);
}
failedToLoad = false;
}
catch (IOException IOEx)
{
int HResult = Marshal.GetHRForException(IOEx);
// if sharing violation
if ((HResult & 0xFFFF) == 32)
{
// sleep for 1/2 second
Thread.Sleep(500);
// if we're skipping UI and we've already waited 20 seconds for a file to be released
// then throw the exception, rollback updates, etc
if (retriedTimes != 20)
{
// otherwise, retry file copy
++retriedTimes;
continue;
}
}
failedToLoad = true;
// the first has already failed (the second just failed)
if (firstFailed)
{
break;
}
firstFailed = true;
continue;
}
catch
{
failedToLoad = true;
// the first has already failed (the second just failed)
if (firstFailed)
{
break;
}
firstFailed = true;
continue;
}
break;
}
if (failedToLoad)
{
LastCheckedForUpdate = DateTime.MinValue;
UpdateStepOn = UpdateStepOn.Nothing;
}
}
public AutoUpdaterInfo(string auID, string oldAUTempFolder)
{
autoUpdateID = auID;
filenames[0] = GetFilename();
if (oldAUTempFolder != null && !SystemFolders.IsDirInDir(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), oldAUTempFolder))
{
filenames[1] = Path.Combine(oldAUTempFolder, "..\\..\\" + AutoUpdateID + ".autoupdate");
if (!File.Exists(filenames[1]))
{
filenames[1] = null;
}
}
bool flag = false;
int num = 0;
bool flag2;
while (true)
{
try
{
if (filenames[1] != null && !flag)
{
Load(filenames[1]);
}
else
{
Load(filenames[0]);
}
flag2 = false;
}
catch (IOException e)
{
int hRForException = Marshal.GetHRForException(e);
if ((hRForException & 0xFFFF) == 32)
{
Thread.Sleep(500);
if (num != 20)
{
num++;
continue;
}
}
flag2 = true;
if (!flag)
{
flag = true;
continue;
}
}
catch
{
flag2 = true;
if (!flag)
{
flag = true;
continue;
}
}
break;
}
if (flag2)
{
LastCheckedForUpdate = DateTime.MinValue;
UpdateStepOn = UpdateStepOn.Nothing;
}
}
public AutoUpdaterInfo(string auID, string oldAUTempFolder)
{
autoUpdateID = auID;
// get the admin filename
filenames[0] = GetFilename();
#if CLIENT
// if tempFolder is not in ApplicationData, then we're updating on behalf of a limited user
if (oldAUTempFolder != null && !SystemFolders.IsDirInDir(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), oldAUTempFolder))
{
// AutoUpdateFiles are stored in: %appdata%\wyUpdate AU\
// The tempFolder is: %appdata%\wyUpdate AU\cache\AppGUID\
// get the limited user's AutoUpdate file
filenames[1] = Path.Combine(oldAUTempFolder, "..\\..\\" + AutoUpdateID + ".autoupdate");
// check if LimitedUser AutoUpdateFile exists
if (!File.Exists(filenames[1]))
{
filenames[1] = null;
}
}
#endif
bool failedToLoad = false;
try
{
// try to load the AutoUpdatefile for limited user
if (filenames[1] != null)
{
Load(filenames[1]);
}
else // load the admin user
{
Load(filenames[0]);
}
}
catch
{
if (filenames[1] != null)
{
try
{
// try to load the AutoUpdateFile for the admin user
Load(filenames[0]);
}
catch
{
failedToLoad = true;
}
}
else
{
failedToLoad = true;
}
}
if (failedToLoad)
{
LastCheckedForUpdate = DateTime.MinValue;
UpdateStepOn = UpdateStepOn.Nothing;
}
}
