Saving file with CGI C program to www directory

Question

I have to save a file in the server with a CGI C program and then access it with the client. If I save the file in the cgi-bin directory, it works but I cannot access it with the client because that directory is protected. If I try to save the file in another directory, the fopen function can't create the file.

FILE *fh = fopen (filename, "wb");

Working but file not accessible.

FILE *fh = fopen (//var//www//filename, "wb");

Not working. The directory is writeable, it works if I run the statement on a local C program.

So, how I can give permissions to CGI programs to write in the www directory?

I'm using Ubuntu and apache.

Thank you

if you tried it like this be sure it would not work FILE *fh = fopen (//var//www//filename, "wb");.You forgot to add FILE *fh = fopen ("//var//www//filename", "wb"); maybe that's why, and try to specify the whole path. — bitcell
Have you tried chmod a+rw /var/www? Default permissions for CGI scripts are: 0755 (rwx-rx-rx), whereas you probably want 0766 (rwx-rw-rw) or something — Elias Van Ootegem

Raúl Gombru Raúl Gombru · Accepted Answer · 2014-11-06T12:39:02

The permissions were OK. It was a problem in the C code. I solved it using

snprintf(pathFile,120,"//var//www//files//%s",filename);
FILE *fh = fopen (pathFile, "wb");

Saving file with CGI C program to www directory

1 Answers