md5sum c function

[Udai Kiran]

Hi all,
I have been looking for a c function that can calculate md5sum of
file given the path of the file. I know that the md5sum utility is
included in gnu coreutils. but how can I use this as a function. Is
there any library that can do this for me.
Thanks in advance.
udai.
http://s.udaykiran.googlepages.com/

 

[Mark Bluemel]

Hi all,
I have been looking for a c function that can calculate md5sum of
file given the path of the file. I know that the md5sum utility is
included in gnu coreutils. but how can I use this as a function. Is
there any library that can do this for me.
Thanks in advance.
udai.
http://s.udaykiran.googlepages.com/

Google and Wikipedia got me a solution in moments. Probably quicker than
posting to a newsgroup and waiting for a response...

 

[ksashtekar]

Google and Wikipedia got me a solution in moments. Probably quicker than
posting to a newsgroup and waiting for a response...

You can use the system() function prototyped in the stdlib.h. in the C
library. It can invoke any executable file/script in the file system.
You can also pass appropriate commands line parameters.

 

[Mark Bluemel]

You can use the system() function prototyped in the stdlib.h. in the C
library. It can invoke any executable file/script in the file system.
You can also pass appropriate commands line parameters.

And that helps the original poster precisely how?

I would assume he wishes to use the md5sum for a file within
his code. Running an external program doesn't move him forward
very far, as far as I can see.

 

[santosh]

You can use the system() function prototyped in the stdlib.h. in the C
library. It can invoke any executable file/script in the file system.
You can also pass appropriate commands line parameters.

Using system() makes your code inherently non-portable. In particular
consider that not all systems come with an md5sum utility
pre-installed, example Windows.

While it may sometimes be necessary in this particular case it pretty
easy to use any one of the several public implementations of an md5sum
function, after noting the license.