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Add support for IPv6 in the server and client.

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Add support for IPv6 in the server and client.
You can force the use of IPv4 or IPv6 only with new
-4 and -6 commandline options, if IPv6 support was compiled in.

Signed-off-by: Karsten Keil <kkeil@suse.de>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This commit is contained in:
Karsten Keil 2008-07-23 18:32:21 +02:00 • committed by H. Peter Anvin
parent 7fe0fb941c
commit 28f22b6591
9 changed files with 574 additions and 185 deletions
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44
common/tftpsubs.c
View file

@ -237,7 +237,7 @@ int synchnet(int f)
{ /* socket to flush */
int pktcount = 0;
char rbuf[PKTSIZE];
struct sockaddr_in from;
union sock_addr from;
socklen_t fromlen;
fd_set socketset;
struct timeval notime;
@ -253,15 +253,15 @@ int synchnet(int f)
/* Otherwise drain the packet */
pktcount++;
fromlen = sizeof from;
fromlen = sizeof(from);
(void)recvfrom(f, rbuf, sizeof(rbuf), 0,
(struct sockaddr *)&from, &fromlen);
&from.sa, &fromlen);
}
return pktcount; /* Return packets drained */
}
int pick_port_bind(int sockfd, struct sockaddr_in *myaddr,
int pick_port_bind(int sockfd, union sock_addr *myaddr,
unsigned int port_range_from,
unsigned int port_range_to)
{
@ -279,9 +279,8 @@ int pick_port_bind(int sockfd, struct sockaddr_in *myaddr,
port = firstport;
do {
myaddr->sin_port = htons(port);
if (bind(sockfd, (struct sockaddr *)myaddr, sizeof *myaddr) < 0) {
sa_set_port(myaddr, htons(port));
if (bind(sockfd, &myaddr->sa, SOCKLEN(myaddr)) < 0) {
/* Some versions of Linux return EINVAL instead of EADDRINUSE */
if (!(port_range && (errno == EINVAL || errno == EADDRINUSE)))
return -1;
@ -299,3 +298,34 @@ int pick_port_bind(int sockfd, struct sockaddr_in *myaddr,
return -1;
}
int
set_sock_addr(char *host,union sock_addr *s, char **name)
{
struct addrinfo *addrResult;
struct addrinfo hints;
int err;
memset(&hints, 0, sizeof(hints));
hints.ai_family = s->sa.sa_family;
hints.ai_flags = AI_CANONNAME;
err = getaddrinfo(host, NULL, &hints, &addrResult);
if (err) {
printf("Error : %s\n", gai_strerror(err));
printf("%s: unknown host\n", host);
return err;
}
if (addrResult == NULL) {
printf("%s: unknown host\n", host);
return EAI_NONAME;
}
memcpy(s, addrResult->ai_addr, addrResult->ai_addrlen);
if (name) {
if (addrResult->ai_canonname)
*name = xstrdup(addrResult->ai_canonname);
else
*name = xstrdup(host);
}
freeaddrinfo(addrResult);
return 0;
}