jordan@ucbarpa.Berkeley.EDU (Jordan Hayes) (08/31/86)
The 4.3 (and, I assume, moving backwards from there to 4.2, since I
looked at the SCCS info for it and it hasn't seen much re-write, mostly
little fixes) lib/libc/net/getnetent.c doesn't seem to do the right
thing. You can repeat it by writing a little program to try to get each
network entry and print it out ... I had problems with lines that have
neither an alias nor a comment right after a line that has both, but I
didn't do real extensive testing. The code looked pretty obscure, so I
re-wrote the routine. If you want a copy, drop me a note. I assume that
no one really uses this code very much, since it could just be
untested.
Here's the program I used to find the bug:
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#include <stdio.h>
#include <netdb.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
main()
{
register char **cp;
struct netent *np;
setnetent(1);
while ((np = getnetent()) != (struct netent *)NULL) {
printf("name\t%s\n", np->n_name);
for (cp = np->n_aliases; cp && *cp && **cp; cp++)
printf("alias\t%s\n", *cp);
printf("addr\t%s\n\n", inet_ntoa(htonl(np->n_net)));
}
}
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/jordan