I am still learning cgi/web stuff and stumbled upon an issue. I am
trying to popen() a program to catch what it dumps to stdout. To start
simply, I am just trying to run uname. I get nothing. No errors on
popen() or pclose(), but nothing printed. I run the same code from a
regular cpp program (changing the khtml_puts() to printf() and it works
perfectly. That makes me wonder if there is something environmental
that I am missing, or maybe this is just not allowed.
My code is this:
char dump[1024];
memset(dump, 0, sizeof(dump));
FILE *f = popen("uname -a", "r");
if(f == NULL) {
khtml_puts(&r, "popen()FAILED!");
} else {
khtml_puts(&r, "output: ");
while (fgets(dump, sizeof(dump), f) != NULL) {
khtml_puts(&r, "GOTSOMETHING!");
khtml_puts(&r, dump);
}
int status = pclose(f);
if(status==-1) {
khtml_puts(&r, "pclose()FAILED");
}
}
khtml_puts(&r, "done");
All I get from it is "output: done"
Also, my httpd.conf is this:
ext_addr="egress"
prefork 2
server "localhost" {
listen on $ext_addr port 80
root "/htdocs"
location "/cgi-bin/*" {
fastcgi
root "/"
}
}
Any ideas?
