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import of dnsmasq-2.51.tar.gz

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This commit is contained in:
Simon Kelley
2009-10-13 17:49:32 +01:00
parent 77e94da7bb
commit 1f15b81d61
34 changed files with 2729 additions and 2194 deletions
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24
src/tftp.c
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@@ -46,12 +46,13 @@ void tftp_request(struct listener *listen, time_t now)
struct sockaddr_in addr, peer;
struct msghdr msg;
struct iovec iov;
int is_err = 1, if_index = 0;
struct ifreq ifr;
int is_err = 1, if_index = 0, mtu = 0;
struct iname *tmp;
struct tftp_transfer *transfer;
int port = daemon->start_tftp_port; /* may be zero to use ephemeral port */
#if defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DONT)
int mtu = IP_PMTUDISC_DONT;
int mtuflag = IP_PMTUDISC_DONT;
#endif
union {
@@ -83,7 +84,10 @@ void tftp_request(struct listener *listen, time_t now)
return;
if (daemon->options & OPT_NOWILD)
addr = listen->iface->addr.in;
{
addr = listen->iface->addr.in;
mtu = listen->iface->mtu;
}
else
{
char name[IF_NAMESIZE];
@@ -125,7 +129,10 @@ void tftp_request(struct listener *listen, time_t now)
for (tmp = daemon->dhcp_except; tmp; tmp = tmp->next)
if (tmp->name && (strcmp(tmp->name, name) == 0))
return;
strncpy(name, ifr.ifr_name, IF_NAMESIZE);
if (ioctl(listen->tftpfd, SIOCGIFMTU, &ifr) != -1)
mtu = ifr.ifr_mtu;
}
addr.sin_port = htons(port);
@@ -158,7 +165,7 @@ void tftp_request(struct listener *listen, time_t now)
{
if (bind(transfer->sockfd, (struct sockaddr *)&addr, sizeof(addr)) == -1 ||
#if defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DONT)
setsockopt(transfer->sockfd, SOL_IP, IP_MTU_DISCOVER, &mtu, sizeof(mtu)) == -1 ||
setsockopt(transfer->sockfd, SOL_IP, IP_MTU_DISCOVER, &mtuflag, sizeof(mtuflag)) == -1 ||
#endif
!fix_fd(transfer->sockfd))
{
@@ -202,6 +209,9 @@ void tftp_request(struct listener *listen, time_t now)
transfer->blocksize = 1;
if (transfer->blocksize > (unsigned)daemon->packet_buff_sz - 4)
transfer->blocksize = (unsigned)daemon->packet_buff_sz - 4;
/* 32 bytes for IP, UDP and TFTP headers */
if (mtu != 0 && transfer->blocksize > (unsigned)mtu - 32)
transfer->blocksize = (unsigned)mtu - 32;
transfer->opt_blocksize = 1;
transfer->block = 0;
}
@@ -213,6 +223,10 @@ void tftp_request(struct listener *listen, time_t now)
}
}
/* cope with backslashes from windows boxen. */
while ((p = strchr(filename, '\\')))
*p = '/';
strcpy(daemon->namebuff, "/");
if (daemon->tftp_prefix)
{