telnet/SOURCES/telnet-gethostbyname.patch
2021-10-08 17:04:45 +00:00

49 lines
1.5 KiB
Diff

--- netkit-telnet-0.17/telnet/commands.c.old 2006-04-30 10:24:49.000000000 -0700
+++ netkit-telnet-0.17/telnet/commands.c 2006-04-30 10:37:10.000000000 -0700
@@ -1669,9 +1669,15 @@
/* If this is not the full name, try to get it via DNS */
if (strchr(hbuf, '.') == 0) {
- struct hostent *he = gethostbyname(hbuf);
- if (he != 0)
- strncpy(hbuf, he->h_name, sizeof hbuf-1);
+ struct addrinfo hints;
+ struct addrinfo *res;
+ memset (&hints, '\0', sizeof (hints));
+ hints.ai_flags = AI_V4MAPPED | AI_ADDRCONFIG | AI_CANONNAME;
+ if (getaddrinfo (hbuf, NULL, &hints, &res) == 0) {
+ if (res->ai_canonname != NULL)
+ strncpy(hbuf, res->ai_canonname, sizeof hbuf-1);
+ freeaddrinfo (res);
+ }
hbuf[sizeof hbuf-1] = '\0';
}
@@ -2832,17 +2838,15 @@
if (!c)
cp2 = 0;
- if ((tmp = inet_addr(cp)) != -1) {
- sin_addr.s_addr = tmp;
- } else if ((host = gethostbyname(cp))) {
-#if defined(h_addr)
- memmove((caddr_t)&sin_addr,
- host->h_addr_list[0],
- sizeof(sin_addr));
-#else
- memmove((caddr_t)&sin_addr, host->h_addr,
- sizeof(sin_addr));
-#endif
+ struct addrinfo hints;
+ memset (&hints, '\0', sizeof (hints));
+ // XXX The code here seems to allow only IPv4 addresses.
+ hints.ai_family = AF_INET;
+ hints.ai_flags = AI_ADDRCONFIG;
+ struct addrinfo *aires;
+ if (getaddrinfo (cp, NULL, &hints, &aires) == 0) {
+ sin_addr = ((struct sockaddr_in *) aires->ai_addr)->sin_addr;
+ freeaddrinfo (aires);
} else {
*cpp = cp;
return(0);