Module Name: src
Committed By: roy
Date: Wed Oct 16 14:54:39 UTC 2019
Modified Files:
src/external/bsd/dhcpcd/dist/src: dhcp.c dhcpcd.c ipv6.c
Log Message:
Sync
To generate a diff of this commit:
cvs rdiff -u -r1.28 -r1.29 src/external/bsd/dhcpcd/dist/src/dhcp.c
cvs rdiff -u -r1.27 -r1.28 src/external/bsd/dhcpcd/dist/src/dhcpcd.c
cvs rdiff -u -r1.5 -r1.6 src/external/bsd/dhcpcd/dist/src/ipv6.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/external/bsd/dhcpcd/dist/src/dhcp.c
diff -u src/external/bsd/dhcpcd/dist/src/dhcp.c:1.28 src/external/bsd/dhcpcd/dist/src/dhcp.c:1.29
--- src/external/bsd/dhcpcd/dist/src/dhcp.c:1.28 Fri Oct 11 11:03:59 2019
+++ src/external/bsd/dhcpcd/dist/src/dhcp.c Wed Oct 16 14:54:39 2019
@@ -164,8 +164,6 @@ dhcp_printoptions(const struct dhcpcd_ct
}
}
-#define get_option_raw(ctx, bootp, bootp_len, opt) \
- get_option((ctx), (bootp), (bootp_len), NULL)
static const uint8_t *
get_option(struct dhcpcd_ctx *ctx,
const struct bootp *bootp, size_t bootp_len,
@@ -3275,26 +3273,35 @@ is_packet_udp_bootp(void *packet, size_t
{
struct ip *ip = packet;
size_t ip_hlen;
- struct udphdr *udp;
+ struct udphdr udp;
- if (sizeof(*ip) > plen)
+ if (plen < sizeof(*ip))
return false;
if (ip->ip_v != IPVERSION || ip->ip_p != IPPROTO_UDP)
return false;
/* Sanity. */
- if (ntohs(ip->ip_len) != plen)
+ if (ntohs(ip->ip_len) > plen)
return false;
ip_hlen = (size_t)ip->ip_hl * 4;
+ if (ip_hlen < sizeof(*ip))
+ return false;
+
/* Check we have a UDP header and BOOTP. */
- if (ip_hlen + sizeof(*udp) + offsetof(struct bootp, vend) > plen)
+ if (ip_hlen + sizeof(udp) + offsetof(struct bootp, vend) > plen)
+ return false;
+
+ /* Sanity. */
+ memcpy(&udp, (char *)ip + ip_hlen, sizeof(udp));
+ if (ntohs(udp.uh_ulen) < sizeof(udp))
+ return false;
+ if (ip_hlen + ntohs(udp.uh_ulen) > plen)
return false;
/* Check it's to and from the right ports. */
- udp = (struct udphdr *)(void *)((char *)ip + ip_hlen);
- if (udp->uh_dport != htons(BOOTPC) || udp->uh_sport != htons(BOOTPS))
+ if (udp.uh_dport != htons(BOOTPC) || udp.uh_sport != htons(BOOTPS))
return false;
return true;
@@ -3306,14 +3313,17 @@ checksums_valid(void *packet,
struct in_addr *from, unsigned int flags)
{
struct ip *ip = packet;
- struct ip pseudo_ip = {
- .ip_p = IPPROTO_UDP,
- .ip_src = ip->ip_src,
- .ip_dst = ip->ip_dst
+ union pip {
+ struct ip ip;
+ uint16_t w[sizeof(struct ip)];
+ } pip = {
+ .ip.ip_p = IPPROTO_UDP,
+ .ip.ip_src = ip->ip_src,
+ .ip.ip_dst = ip->ip_dst,
};
size_t ip_hlen;
- uint16_t udp_len, uh_sum;
- struct udphdr *udp;
+ struct udphdr udp;
+ char *udpp, *uh_sump;
uint32_t csum;
if (from != NULL)
@@ -3324,22 +3334,32 @@ checksums_valid(void *packet,
return false;
if (flags & BPF_PARTIALCSUM)
- return 0;
+ return true;
- udp = (struct udphdr *)(void *)((char *)ip + ip_hlen);
- if (udp->uh_sum == 0)
- return 0;
+ udpp = (char *)ip + ip_hlen;
+ memcpy(&udp, udpp, sizeof(udp));
+ if (udp.uh_sum == 0)
+ return true;
/* UDP checksum is based on a pseudo IP header alongside
* the UDP header and payload. */
- udp_len = ntohs(udp->uh_ulen);
- uh_sum = udp->uh_sum;
- udp->uh_sum = 0;
- pseudo_ip.ip_len = udp->uh_ulen;
+ pip.ip.ip_len = udp.uh_ulen;
csum = 0;
- in_cksum(&pseudo_ip, sizeof(pseudo_ip), &csum);
- csum = in_cksum(udp, udp_len, &csum);
- return csum == uh_sum;
+
+ /* Need to zero the UDP sum in the packet for the checksum to work. */
+ uh_sump = udpp + offsetof(struct udphdr, uh_sum);
+ memset(uh_sump, 0, sizeof(udp.uh_sum));
+
+ /* Checksum psuedo header and then UDP + payload. */
+ in_cksum(pip.w, sizeof(pip.w), &csum);
+ csum = in_cksum(udpp, ntohs(udp.uh_ulen), &csum);
+
+#if 0 /* Not needed, just here for completeness. */
+ /* Put the checksum back. */
+ memcpy(uh_sump, &udp.uh_sum, sizeof(udp.uh_sum));
+#endif
+
+ return csum == udp.uh_sum;
}
static void
Index: src/external/bsd/dhcpcd/dist/src/dhcpcd.c
diff -u src/external/bsd/dhcpcd/dist/src/dhcpcd.c:1.27 src/external/bsd/dhcpcd/dist/src/dhcpcd.c:1.28
--- src/external/bsd/dhcpcd/dist/src/dhcpcd.c:1.27 Fri Oct 11 11:03:59 2019
+++ src/external/bsd/dhcpcd/dist/src/dhcpcd.c Wed Oct 16 14:54:39 2019
@@ -1984,12 +1984,10 @@ printpidfile:
logdebugx(PACKAGE "-" VERSION " starting");
ctx.options |= DHCPCD_STARTED;
-#ifdef HAVE_SETPROCTITLE
setproctitle("%s%s%s",
ctx.options & DHCPCD_MASTER ? "[master]" : argv[optind],
ctx.options & DHCPCD_IPV4 ? " [ip4]" : "",
ctx.options & DHCPCD_IPV6 ? " [ip6]" : "");
-#endif
if (if_opensockets(&ctx) == -1) {
logerr("%s: if_opensockets", __func__);
@@ -2155,6 +2153,9 @@ exit1:
loginfox(PACKAGE " exited");
logclose();
free(ctx.logfile);
+#ifdef SETPROCTITLE_H
+ setproctitle_free();
+#endif
#ifdef USE_SIGNALS
if (ctx.options & DHCPCD_FORKED)
_exit(i); /* so atexit won't remove our pidfile */
Index: src/external/bsd/dhcpcd/dist/src/ipv6.c
diff -u src/external/bsd/dhcpcd/dist/src/ipv6.c:1.5 src/external/bsd/dhcpcd/dist/src/ipv6.c:1.6
--- src/external/bsd/dhcpcd/dist/src/ipv6.c:1.5 Fri Sep 13 11:01:50 2019
+++ src/external/bsd/dhcpcd/dist/src/ipv6.c Wed Oct 16 14:54:39 2019
@@ -1253,7 +1253,9 @@ out:
* or DHCP6 handlers and the existance of any useable
* global address on the interface has changed,
* call rt_build to add/remove the default route. */
- if (ifp->active && ifp->options->options & DHCPCD_IPV6 &&
+ if (ifp->active &&
+ ((ifp->options != NULL && ifp->options->options & DHCPCD_IPV6) ||
+ (ifp->options == NULL && ctx->options & DHCPCD_IPV6)) &&
!(ctx->options & DHCPCD_RTBUILD) &&
(ipv6_anyglobal(ifp) != NULL) != anyglobal)
rt_build(ctx, AF_INET6);
