From:	"Olaf van der Spek" <Olaf AT XCC DOT TMFWeb DOT NL>
Newsgroups:	comp.os.msdos.djgpp
References:	<l%K75.252146$k22 DOT 1109779 AT flipper> <_zL75.80726$NF5 DOT 1352833 AT afrodite DOT telenet-ops DOT be>
Subject:	Re: Pipe to sendmail (like Perl)
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Date:	Mon, 03 Jul 2000 07:39:13 GMT
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"Tim "Zastai" Van Holder" <zastai AT hotmail DOT com> schreef in bericht
news:_zL75.80726$NF5 DOT 1352833 AT afrodite DOT telenet-ops DOT be...
> Hi,
>
> I don't think C++ has pipe-specific functions in its library (ie I don't
> think there's a pipestream class), but you can use the C popen()/pclose()
> calls to achieve what you want:

I tried this:

#include <cstdio>

int main()
{
 FILE* mail = popen("/usr/sbin/sendmail", "wt");
 cout << mail << endl;
 return 0;
}

But the output is:
(nil)

Sendmail does exist:
/cgi-bin/cgi_input > ls -l /usr/sbin/sendmail
-r-sr-xr-x   1 root     root       390424 Nov  9  1999 /usr/sbin/sendmail

So what could be the problem?

>
> ----
> #include <cstdio>
>
> extern char *to, *from, *subject, *body;
>
> int
> main(void)
> {
> FILE* mailpipe = popen("/usr/bin/sendmail -oi -t");
>   if (mailpipe != 0) {
>     fprintf (mailpipe, "To: %s\nFrom: %s\nSubject: %s\n", to, from,
> subject);
>     fputs (mailpipe, body);
>     pclose (mailpipe);
>   } else cerr << "Couldn't open pipe to mailprogram." << endl;
>   return 0;
> }
> ----
>
> Zastai
>
> Olaf van der Spek <Olaf AT XCC DOT TMFWeb DOT NL> wrote in message
> news:l%K75.252146$k22 DOT 1109779 AT flipper...
> > Hi,
> >
> > I try to use a C++ program to send a mail using sendmail on a Unix
server.
> > In Perl, you can use this:
> > $mailprog = '/usr/sbin/sendmail';
> >    open (MAIL, "|$mailprog $in{'address'}") || die "Can't open
> > $mailprog!\n";
> >    print MAIL "From: $admin_email\n";
> >    print MAIL "Subject: You are added!\n\n";
> >    print MAIL <<to_the_end;
> > This is to confirm your addition to the $list_name.
> > to_the_end
> >
> > So in C++, I tried:
> > void send_mail(const string& from, const string& to, const string&
> subject,
> > const string& body)
> > {
> >  ofstream mail;
> >  mail.open("|/usr/sbin/sendmail -oi -t");
> >  if (!mail.is_open())
> >   cout << "Can't open pipe to sendmail" << endl;
> >  mail << "To: " << to << endl
> >   << "From: " << from << endl
> >   << "Subject: " << subject << endl
> >   << body;
> > }
> >
> > But that didn't work, I got the error "Can't open pipe to sendmail".
> > Anybody knows how this could be solved?
> >
> > --
> >
> > Olaf van der Spek
> > Almere, Holland
> > Olaf AT XCC DOT TMFWeb DOT NL
> > http://xcc.tiberian.com/
> >
> >
>
>

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