On Thu, 3 Oct 1996, Jörgen Zigge Sigvardsson wrote:
> > > Just wondering about the code snippet presented below.
> > > > sprintf(buf, "mail -s \"%s\" %s <MAILFILE.TXT &", subject, emailaddr);
> >
> > if (strchr(emailaddr, ';') != NULL) {
> ^^^^^^^^^^^^^
> What happens if this would be a '&' instead? Bye bye files
>
> Make some kind of generic function that will check the incoming string.
> Allow NO Unix shell-characters ; : & > < and you will be fine.
>
then this should do it:
if (strchr(";:&<>", emailaddr) != NULL) {
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