File Watcher +Win Service

[Marcelo López]

Hi all.
I'm developing a Windows Explorer like app.

I have my own repository to store the files and a bd where i keep the path
to each file.

I have to watch the repository all time to avoid modifications by other
people. So that, i'm using a win service in wich i implement a file watcher.

I have two basic questions:

1) I'm implementig methods to restore the information in the bd if someome
delete, rename or move a file in my repository. The problem i have is that
the file watcher
throws more than one event for example if someone moves a file. So, how can
i know which other events are waiting in the queue (and eventually how can i
acces and navigate to this queue) or is there another way to restore the
changes made to any file on my repository ??

2) My app also can modify the files in the repository, so, i don't want in
these case the file watcher perform the restore actions !! how can i differ
the changes made by my app or somebody else ?? is there any way to ask if my
app is running or something like that ??

Any suggestions are welcome !!

regards !!

Marcelo López
Inforcorp. Uruguay. Latin America.

[Bela Istok]

Hello i guest that a better protection for your files it's to put the folder
protected with access only to a user that you control, start your app with
that user account, and you will be the only one with the permision to chage
the files because only that user can access that folder and chage the files.

--
Bela Istok
MVP C#
Caracas, Venezuela
"Marcelo López" <t-********@infocorp.com.uy> wrote in message
news:ed**************@TK2MSFTNGP09.phx.gbl...

Hi all.
I'm developing a Windows Explorer like app.

I have my own repository to store the files and a bd where i keep the path
to each file.

I have to watch the repository all time to avoid modifications by other
people. So that, i'm using a win service in wich i implement a file watcher.
I have two basic questions:

1) I'm implementig methods to restore the information in the bd if someome
delete, rename or move a file in my repository. The problem i have is that
the file watcher
throws more than one event for example if someone moves a file. So, how can i know which other events are waiting in the queue (and eventually how can i acces and navigate to this queue) or is there another way to restore the
changes made to any file on my repository ??

2) My app also can modify the files in the repository, so, i don't want in
these case the file watcher perform the restore actions !! how can i differ the changes made by my app or somebody else ?? is there any way to ask if my app is running or something like that ??

Any suggestions are welcome !!

regards !!

Marcelo López
Inforcorp. Uruguay. Latin America.

[Marcelo López]

OK, it seems to be an interesting solution.
So that, i'd like to get more information, because i never have worked with
permissions and users in C#.
What happens if someones access the directory using for example the Win
Explorer ?? Could the administrator give himself the same permissions that
my application and delete or move the files protected ??

My requirement is to " avoid modifications on my files by somebody else "
when my app is running or not.
If the solution you are giving to me satisfy it, it is more than welcome !!!
If the answer is YES, i'd like to get more information about creating an app
user and managing its permissions on my app start, etc.

Regards !!!

Marcelo
"Bela Istok" <be****@hotmail.com> wrote in message
news:OQ**************@TK2MSFTNGP11.phx.gbl...

Hello i guest that a better protection for your files it's to put the folder protected with access only to a user that you control, start your app with
that user account, and you will be the only one with the permision to chage the files because only that user can access that folder and chage the files.
--
Bela Istok
MVP C#
Caracas, Venezuela
"Marcelo López" <t-********@infocorp.com.uy> wrote in message
news:ed**************@TK2MSFTNGP09.phx.gbl...

Hi all.
I'm developing a Windows Explorer like app.

I have my own repository to store the files and a bd where i keep the path to each file.

I have to watch the repository all time to avoid modifications by other
people. So that, i'm using a win service in wich i implement a file watcher.

I have two basic questions:

1) I'm implementig methods to restore the information in the bd if someome delete, rename or move a file in my repository. The problem i have is that the file watcher
throws more than one event for example if someone moves a file. So, how

can

i know which other events are waiting in the queue (and eventually how can i

acces and navigate to this queue) or is there another way to restore the
changes made to any file on my repository ??

2) My app also can modify the files in the repository, so, i don't want

in these case the file watcher perform the restore actions !! how can i

differ

the changes made by my app or somebody else ?? is there any way to ask

if my

app is running or something like that ??

Any suggestions are welcome !!

regards !!

Marcelo López
Inforcorp. Uruguay. Latin America.

[Philip Rieck]

Using windows explorer they would get an error trying to write to the
directory. However, an administrator will always be able to bypass this.
(note that an admin could also stop your service and mess with the files as
well). However, an admin would have to explicitly take control of the
directory, so it wouldn't be an accident.

So, you can't keep an admin from doing it no matter what. But you can make
it hard:
Create the directory and make it owned by your app user
Give your app user full control, remove everyone else
Make sure that the permissions from parents are not inherited

No only that user can access the directory.

"Marcelo López" <t-********@infocorp.com.uy> wrote in message
news:%2****************@TK2MSFTNGP11.phx.gbl...

OK, it seems to be an interesting solution.
So that, i'd like to get more information, because i never have worked with permissions and users in C#.
What happens if someones access the directory using for example the Win
Explorer ?? Could the administrator give himself the same permissions that
my application and delete or move the files protected ??

My requirement is to " avoid modifications on my files by somebody else "
when my app is running or not.
If the solution you are giving to me satisfy it, it is more than welcome !!! If the answer is YES, i'd like to get more information about creating an app user and managing its permissions on my app start, etc.

Regards !!!

Marcelo
"Bela Istok" <be****@hotmail.com> wrote in message
news:OQ**************@TK2MSFTNGP11.phx.gbl...

Hello i guest that a better protection for your files it's to put the folder

protected with access only to a user that you control, start your app with

that user account, and you will be the only one with the permision to

chage

the files because only that user can access that folder and chage the

files.

--
Bela Istok
MVP C#
Caracas, Venezuela
"Marcelo López" <t-********@infocorp.com.uy> wrote in message
news:ed**************@TK2MSFTNGP09.phx.gbl...

Hi all.
I'm developing a Windows Explorer like app.

I have my own repository to store the files and a bd where i keep the path to each file.

I have to watch the repository all time to avoid modifications by other people. So that, i'm using a win service in wich i implement a file

watcher.

I have two basic questions:

1) I'm implementig methods to restore the information in the bd if someome delete, rename or move a file in my repository. The problem i have is that the file watcher
throws more than one event for example if someone moves a file. So, how can

i know which other events are waiting in the queue (and eventually how can

i

acces and navigate to this queue) or is there another way to restore

the changes made to any file on my repository ??

2) My app also can modify the files in the repository, so, i don't

want in these case the file watcher perform the restore actions !! how can i

differ

the changes made by my app or somebody else ?? is there any way to ask

if

my

app is running or something like that ??

Any suggestions are welcome !!

regards !!

Marcelo López
Inforcorp. Uruguay. Latin America.

[Marcelo López]

OK, it sounds good.

Where can i get a tutorial or similar to learn about creating users
programatically, asigning permissons, etc with C# ?

I have to do it when the user installs my app.

I'll be pleased for that.
"Philip Rieck" <st***@mckraken.com> wrote in message
news:OO**************@TK2MSFTNGP11.phx.gbl...

Using windows explorer they would get an error trying to write to the
directory. However, an administrator will always be able to bypass this.
(note that an admin could also stop your service and mess with the files as well). However, an admin would have to explicitly take control of the
directory, so it wouldn't be an accident.

So, you can't keep an admin from doing it no matter what. But you can make it hard:
Create the directory and make it owned by your app user
Give your app user full control, remove everyone else
Make sure that the permissions from parents are not inherited

No only that user can access the directory.

"Marcelo López" <t-********@infocorp.com.uy> wrote in message
news:%2****************@TK2MSFTNGP11.phx.gbl...

OK, it seems to be an interesting solution.
So that, i'd like to get more information, because i never have worked

with

permissions and users in C#.
What happens if someones access the directory using for example the Win
Explorer ?? Could the administrator give himself the same permissions that

my application and delete or move the files protected ??

My requirement is to " avoid modifications on my files by somebody else " when my app is running or not.
If the solution you are giving to me satisfy it, it is more than welcome

!!!

If the answer is YES, i'd like to get more information about creating an

app

user and managing its permissions on my app start, etc.

Regards !!!

Marcelo
"Bela Istok" <be****@hotmail.com> wrote in message
news:OQ**************@TK2MSFTNGP11.phx.gbl...

Hello i guest that a better protection for your files it's to put the

folder

protected with access only to a user that you control, start your app with that user account, and you will be the only one with the permision to

chage

the files because only that user can access that folder and chage the

files.

--
Bela Istok
MVP C#
Caracas, Venezuela
"Marcelo López" <t-********@infocorp.com.uy> wrote in message
news:ed**************@TK2MSFTNGP09.phx.gbl...
> Hi all.
> I'm developing a Windows Explorer like app.
>
> I have my own repository to store the files and a bd where i keep

the path

> to each file.
>
> I have to watch the repository all time to avoid modifications by other > people. So that, i'm using a win service in wich i implement a file
watcher.
>
> I have two basic questions:
>
> 1) I'm implementig methods to restore the information in the bd if

someome

> delete, rename or move a file in my repository. The problem i have

is that

> the file watcher
> throws more than one event for example if someone moves a file. So, how can
> i know which other events are waiting in the queue (and eventually

how can

i
> acces and navigate to this queue) or is there another way to restore the > changes made to any file on my repository ??
>
> 2) My app also can modify the files in the repository, so, i don't

want

in

> these case the file watcher perform the restore actions !! how can i
differ
> the changes made by my app or somebody else ?? is there any way to

ask if

my
> app is running or something like that ??
>
> Any suggestions are welcome !!
>
> regards !!
>
> Marcelo López
> Inforcorp. Uruguay. Latin America.
>
>