Michael Van Canneyt wrote:
>
> On Sun, 7 Jan 2007, R. B. wrote:
>
>> Hello,
>>
>> I almost finished my first application that I build using fpc/lazarus. It is
>> an IDE for an AI language and I have to greatly admire all those who made
>> fpc (big thumb up despite I haven't got enough time to check out the source
>> specially the three-pass part) and lazarus possible. I couldn't believe how
>> easy it was to make a binary for linux and the other for win using the same
>> source). Now it's easier for me to say that it's quite possible that I will
>> not go back to C/C++ again. Many many thanks to you all and hopefully I will
>> give a hand when I get enough experience.
>> My second project that I plan to build with fpc/lazarus is a Package
>> Manager. I have'nt started yet but already have a question in mind: how to
>> make the program itself sure that the user is root? OK, if the uid is not
>> zero then it prompts for the root's password, then what? How to see that the
>> passwd is the root's? Any ideas?
>
> 2 options:
> - use getpwnam from libc (for root, getpwuid is easier)
> - Encrypt password and compare with the encrypted password found in
> /etc/shadow or
> /etc/passwd
The file /etc/shadow is not readable by users, because that's why it is
separate from /etc/passwd :-).
Micha
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