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A patch from Bart Visscher <magick@linux-fan.com> to add an

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xconnect helper routine which does:
        -address and port resolving
	-tries to connect to all resolved addresses until connected
	-uses getaddrinfo, so works for IPv6 too
This patch also ports rdate, telnet, and wget to use the new
xconnect function.  Thanks Bart!
This commit is contained in:
Eric Andersen
2002-07-03 11:51:44 +00:00
parent 51b8bd68bb
commit 0b31586c71
4 changed files with 93 additions and 117 deletions
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20
util-linux/rdate.c
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@ -39,26 +39,14 @@ static const int RFC_868_BIAS = 2208988800UL;
static time_t askremotedate(const char *host)
{
struct hostent *h;
struct sockaddr_in s_in;
struct servent *tserv;
unsigned long int nett, localt;
const char *port="37";
int fd;
h = xgethostbyname(host); /* get the IP addr */
memcpy(&s_in.sin_addr, h->h_addr, sizeof(s_in.sin_addr));
if (getservbyname("time", "tcp") != NULL)
port="time";
s_in.sin_port = htons(37); /* find port # */
if ((tserv = getservbyname("time", "tcp")) != NULL)
s_in.sin_port = tserv->s_port;
s_in.sin_family = AF_INET;
if ((fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) /* get net connection */
perror_msg_and_die("socket");
if (connect(fd, (struct sockaddr *)&s_in, sizeof(s_in)) < 0) /* connect to time server */
perror_msg_and_die("%s", host);
fd = xconnect(host, port);
if (read(fd, (void *)&nett, 4) != 4) /* read time from server */
error_msg_and_die("%s did not send the complete time", host);