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[src/trunk]: src/external/bsd/dhcpcd/dist/src Sync
details: https://anonhg.NetBSD.org/src/rev/d2ab4eda8395
branches: trunk
changeset: 459044:d2ab4eda8395
user: roy <roy%NetBSD.org@localhost>
date: Wed Aug 21 17:12:19 2019 +0000
description:
Sync
diffstat:
external/bsd/dhcpcd/dist/src/bpf.c | 15 +++++
external/bsd/dhcpcd/dist/src/dhcp.c | 79 +++++++++++++-----------------
external/bsd/dhcpcd/dist/src/dhcpcd.c | 9 +-
external/bsd/dhcpcd/dist/src/if-bsd.c | 37 ++++++++------
external/bsd/dhcpcd/dist/src/if-options.c | 4 +-
external/bsd/dhcpcd/dist/src/ipv6.h | 10 ++-
6 files changed, 84 insertions(+), 70 deletions(-)
diffs (truncated from 364 to 300 lines):
diff -r da77b7c31912 -r d2ab4eda8395 external/bsd/dhcpcd/dist/src/bpf.c
--- a/external/bsd/dhcpcd/dist/src/bpf.c Wed Aug 21 17:10:29 2019 +0000
+++ b/external/bsd/dhcpcd/dist/src/bpf.c Wed Aug 21 17:12:19 2019 +0000
@@ -558,6 +558,15 @@
#define BPF_M_UDP 3
#define BPF_M_UDPLEN 4
+#ifdef ARPHRD_NONE
+static const struct bpf_insn bpf_bootp_none[] = {
+ /* Set the frame header length to zero. */
+ BPF_STMT(BPF_LD + BPF_IMM, 0),
+ BPF_STMT(BPF_ST, BPF_M_FHLEN),
+};
+#define BPF_BOOTP_NONE_LEN __arraycount(bpf_bootp_none)
+#endif
+
static const struct bpf_insn bpf_bootp_ether[] = {
/* Make sure this is an IP packet. */
BPF_STMT(BPF_LD + BPF_H + BPF_ABS,
@@ -665,6 +674,12 @@
bp = bpf;
/* Check frame header. */
switch(ifp->family) {
+#ifdef ARPHRD_NONE
+ case ARPHRD_NONE:
+ memcpy(bp, bpf_bootp_none, sizeof(bpf_bootp_none));
+ bp += BPF_BOOTP_NONE_LEN;
+ break;
+#endif
case ARPHRD_ETHER:
memcpy(bp, bpf_bootp_ether, sizeof(bpf_bootp_ether));
bp += BPF_BOOTP_ETHER_LEN;
diff -r da77b7c31912 -r d2ab4eda8395 external/bsd/dhcpcd/dist/src/dhcp.c
--- a/external/bsd/dhcpcd/dist/src/dhcp.c Wed Aug 21 17:10:29 2019 +0000
+++ b/external/bsd/dhcpcd/dist/src/dhcp.c Wed Aug 21 17:12:19 2019 +0000
@@ -1584,24 +1584,24 @@
}
static uint16_t
-checksum(const void *data, size_t len)
+in_cksum(void *data, size_t len, uint32_t *isum)
{
- const uint8_t *addr = data;
- uint32_t sum = 0;
-
- while (len > 1) {
- sum += (uint32_t)(addr[0] * 256 + addr[1]);
- addr += 2;
- len -= 2;
- }
+ const uint16_t *word = data;
+ uint32_t sum = isum != NULL ? *isum : 0;
+
+ for (; len > 1; len -= sizeof(*word))
+ sum += *word++;
if (len == 1)
- sum += (uint32_t)(*addr * 256);
+ sum += *(const uint8_t *)word;
+
+ if (isum != NULL)
+ *isum = sum;
sum = (sum >> 16) + (sum & 0xffff);
sum += (sum >> 16);
- return (uint16_t)~htons((uint16_t)sum);
+ return (uint16_t)~sum;
}
static struct bootp_pkt *
@@ -1639,14 +1639,16 @@
udp->uh_dport = htons(BOOTPS);
udp->uh_ulen = htons((uint16_t)(sizeof(*udp) + length));
ip->ip_len = udp->uh_ulen;
- udp->uh_sum = checksum(udpp, sizeof(*ip) + sizeof(*udp) + length);
+ udp->uh_sum = in_cksum(udpp, sizeof(*ip) + sizeof(*udp) + length, NULL);
ip->ip_v = IPVERSION;
ip->ip_hl = sizeof(*ip) >> 2;
ip->ip_id = (uint16_t)arc4random_uniform(UINT16_MAX);
ip->ip_ttl = IPDEFTTL;
ip->ip_len = htons((uint16_t)(sizeof(*ip) + sizeof(*udp) + length));
- ip->ip_sum = checksum(ip, sizeof(*ip));
+ ip->ip_sum = in_cksum(ip, sizeof(*ip), NULL);
+ if (ip->ip_sum == 0)
+ ip->ip_sum = 0xffff; /* RFC 768 */
*sz = sizeof(*ip) + sizeof(*udp) + length;
return udpp;
@@ -2363,7 +2365,10 @@
return 0;
}
#else
- if (ifp->options->options & DHCPCD_ARP && ia == NULL) {
+ if (!(ifp->flags & IFF_NOARP) &&
+ ifp->options->options & DHCPCD_ARP &&
+ ia == NULL)
+ {
struct arp_state *astate;
struct dhcp_lease l;
@@ -3236,10 +3241,15 @@
unsigned int flags)
{
struct ip *ip = packet;
- char ip_hlv = *(char *)ip;
+ struct ip pseudo_ip = {
+ .ip_p = IPPROTO_UDP,
+ .ip_src = ip->ip_src,
+ .ip_dst = ip->ip_dst
+ };
size_t ip_hlen;
uint16_t ip_len, uh_sum;
struct udphdr *udp;
+ uint32_t csum;
if (plen < sizeof(*ip)) {
if (from != NULL)
@@ -3252,13 +3262,13 @@
from->s_addr = ip->ip_src.s_addr;
ip_hlen = (size_t)ip->ip_hl * 4;
- if (checksum(ip, ip_hlen) != 0) {
+ if (in_cksum(ip, ip_hlen, NULL) != 0) {
errno = EINVAL;
return -1;
}
+ /* Check we have a payload */
ip_len = ntohs(ip->ip_len);
- /* Check we have a payload */
if (ip_len <= ip_hlen + sizeof(*udp)) {
errno = ERANGE;
return -1;
@@ -3272,28 +3282,21 @@
if (flags & BPF_PARTIALCSUM)
return 0;
- udp = (struct udphdr *)((char *)ip + ip_hlen);
+ /* UDP checksum is based on a pseudo IP header alongside
+ * the UDP header and payload. */
+ udp = (struct udphdr *)(void *)((char *)ip + ip_hlen);
if (udp->uh_sum == 0)
return 0;
+
uh_sum = udp->uh_sum;
-
- /* This does scribble on the packet, but at this point
- * we don't care to keep it. */
udp->uh_sum = 0;
- ip->ip_hl = 0;
- ip->ip_v = 0;
- ip->ip_tos = 0;
- ip->ip_len = udp->uh_ulen;
- ip->ip_id = 0;
- ip->ip_off = 0;
- ip->ip_ttl = 0;
- ip->ip_sum = 0;
- if (checksum(packet, ip_len) != uh_sum) {
+ pseudo_ip.ip_len = udp->uh_ulen;
+ csum = 0;
+ in_cksum(&pseudo_ip, sizeof(pseudo_ip), &csum);
+ if (in_cksum(udp, ntohs(udp->uh_ulen), &csum) != uh_sum) {
errno = EINVAL;
return -1;
}
- *(char *)ip = ip_hlv;
- ip->ip_len = htons(ip_len);
return 0;
}
@@ -3339,12 +3342,6 @@
ifp->name, inet_ntoa(from));
return;
}
- if (ifp->flags & IFF_POINTOPOINT &&
- (state->addr == NULL || state->addr->brd.s_addr != from.s_addr))
- {
- logwarnx("%s: server %s is not destination",
- ifp->name, inet_ntoa(from));
- }
/*
* DHCP has a variable option area rather than a fixed vendor area.
@@ -3721,12 +3718,6 @@
return;
}
- if (ifp->hwlen == 0 && ifo->clientid[0] == '\0') {
- logwarnx("%s: needs a clientid to configure", ifp->name);
- dhcp_drop(ifp, "FAIL");
- eloop_timeout_delete(ifp->ctx->eloop, NULL, ifp);
- return;
- }
/* We don't want to read the old lease if we NAK an old test */
nolease = state->offer && ifp->ctx->options & DHCPCD_TEST;
if (!nolease && ifo->options & DHCPCD_DHCP) {
diff -r da77b7c31912 -r d2ab4eda8395 external/bsd/dhcpcd/dist/src/dhcpcd.c
--- a/external/bsd/dhcpcd/dist/src/dhcpcd.c Wed Aug 21 17:10:29 2019 +0000
+++ b/external/bsd/dhcpcd/dist/src/dhcpcd.c Wed Aug 21 17:12:19 2019 +0000
@@ -458,11 +458,10 @@
ifo->options &= ~DHCPCD_ARP;
if (!(ifp->flags & IFF_MULTICAST))
ifo->options &= ~DHCPCD_IPV6RS;
- if (!(ifo->options & DHCPCD_INFORM))
+ if (!(ifo->options & (DHCPCD_INFORM | DHCPCD_WANTDHCP)))
ifo->options |= DHCPCD_STATIC;
}
- if (ifp->flags & IFF_NOARP ||
- !(ifo->options & DHCPCD_ARP) ||
+ if (!(ifo->options & DHCPCD_ARP) ||
ifo->options & (DHCPCD_INFORM | DHCPCD_STATIC))
ifo->options &= ~DHCPCD_IPV4LL;
@@ -1440,10 +1439,10 @@
* write callback on the fd */
if (strcmp(*argv, "--version") == 0) {
return control_queue(fd, UNCONST(VERSION),
- strlen(VERSION) + 1, 0);
+ strlen(VERSION) + 1, false);
} else if (strcmp(*argv, "--getconfigfile") == 0) {
return control_queue(fd, UNCONST(fd->ctx->cffile),
- strlen(fd->ctx->cffile) + 1, 0);
+ strlen(fd->ctx->cffile) + 1, false);
} else if (strcmp(*argv, "--getinterfaces") == 0) {
eloop_event_add_w(fd->ctx->eloop, fd->fd,
dhcpcd_getinterfaces, fd);
diff -r da77b7c31912 -r d2ab4eda8395 external/bsd/dhcpcd/dist/src/if-bsd.c
--- a/external/bsd/dhcpcd/dist/src/if-bsd.c Wed Aug 21 17:10:29 2019 +0000
+++ b/external/bsd/dhcpcd/dist/src/if-bsd.c Wed Aug 21 17:12:19 2019 +0000
@@ -191,6 +191,8 @@
if (setsockopt(ctx->link_fd, PF_ROUTE, ROUTE_MSGFILTER,
&msgfilter_mask, sizeof(msgfilter_mask)) == -1)
logerr(__func__);
+#else
+#warning kernel does not support route message filtering
#endif
return 0;
@@ -660,11 +662,8 @@
}
#endif
- /* We have already checked that at least one address must be
- * present after the rtm structure. */
- /* coverity[ptr_arith] */
- if (get_addrs(rtm->rtm_addrs, rtm + 1,
- rtm->rtm_msglen - sizeof(*rtm), rti_info) == -1)
+ if (get_addrs(rtm->rtm_addrs, (const char *)rtm + sizeof(*rtm),
+ rtm->rtm_msglen - sizeof(*rtm), rti_info) == -1)
return -1;
memset(rt, 0, sizeof(*rt));
@@ -1115,10 +1114,7 @@
if ((ifp = if_findindex(ctx->ifaces, ifam->ifam_index)) == NULL)
return 0;
- /* We have already checked that at least one address must be
- * present after the ifam structure. */
- /* coverity[ptr_arith] */
- if (get_addrs(ifam->ifam_addrs, ifam + 1,
+ if (get_addrs(ifam->ifam_addrs, (const char *)ifam + sizeof(*ifam),
ifam->ifam_msglen - sizeof(*ifam), rti_info) == -1)
return -1;
@@ -1314,32 +1310,41 @@
#ifdef RTM_DESYNC
case RTM_DESYNC:
dhcpcd_linkoverflow(ctx);
+#elif !defined(SO_RERROR)
+#warning cannot detect route socket overflow within kernel
#endif
}
return 0;
}
+__CTASSERT(offsetof(struct rt_msghdr, rtm_msglen) == 0);
int
if_handlelink(struct dhcpcd_ctx *ctx)
{
struct rtm rtm;
- struct iovec iov = { .iov_base = &rtm, .iov_len = sizeof(rtm) };
- struct msghdr msg = { .msg_iov = &iov, .msg_iovlen = 1 };
ssize_t len;
- len = recvmsg(ctx->link_fd, &msg, 0);
+ len = read(ctx->link_fd, &rtm, sizeof(rtm));
if (len == -1)
return -1;
if (len == 0)
return 0;
- if (len < rtm.hdr.rtm_msglen) {
+ if ((size_t)len < sizeof(rtm.hdr.rtm_msglen) ||
+ len != rtm.hdr.rtm_msglen)
+ {
errno = EINVAL;
return -1;
}
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