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Add awareness of an IPv6.

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MFC after:	1 week
This commit is contained in:
Hajimu UMEMOTO 2002-04-15 18:45:20 +00:00
parent c8199043e0
commit 7b0e82a919
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=94789
1 changed files with 20 additions and 7 deletions
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27
lib/libc/net/rcmdsh.c
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@ -57,17 +57,18 @@ __FBSDID("$FreeBSD$");
* program in place of a direct rcmd(3) function call so as to
* avoid having to be root. Note that rport is ignored.
*/
/* ARGSUSED */
int
rcmdsh(ahost, rport, locuser, remuser, cmd, rshprog)
char **ahost;
int rport __unused;
int rport;
const char *locuser, *remuser, *cmd, *rshprog;
{
struct hostent *hp;
int cpid, sp[2];
struct addrinfo hints, *res;
int cpid, sp[2], error;
char *p;
struct passwd *pw;
char num[8];
static char hbuf[NI_MAXHOST];
/* What rsh/shell to use. */
if (rshprog == NULL)
@ -81,11 +82,23 @@ rcmdsh(ahost, rport, locuser, remuser, cmd, rshprog)
/* Validate remote hostname. */
if (strcmp(*ahost, "localhost") != 0) {
if ((hp = gethostbyname(*ahost)) == NULL) {
herror(*ahost);
memset(&hints, 0, sizeof(hints));
hints.ai_flags = AI_CANONNAME;
hints.ai_family = PF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
(void)snprintf(num, sizeof(num), "%d", ntohs(rport));
error = getaddrinfo(*ahost, num, &hints, &res);
if (error) {
fprintf(stderr, "rcmdsh: getaddrinfo: %s\n",
gai_strerror(error));
return (-1);
}
*ahost = hp->h_name;
if (res->ai_canonname) {
strncpy(hbuf, res->ai_canonname, sizeof(hbuf) - 1);
hbuf[sizeof(hbuf) - 1] = '\0';
*ahost = hbuf;
}
freeaddrinfo(res);
}
/* Get a socketpair we'll use for stdin and stdout. */