#include <openssl/bio.h>
#ifndef OPENSSL_NO_DGRAM
-#if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_VMS)
+#if !(defined(_WIN32) || defined(OPENSSL_SYS_VMS))
+# include <sys/time.h>
+#endif
+#if defined(OPENSSL_SYS_VMS)
#include <sys/timeb.h>
#endif
#define OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE 0xc0
#endif
-#ifdef OPENSSL_SYS_LINUX
+#if defined(OPENSSL_SYS_LINUX) && !defined(IP_MTU)
#define IP_MTU 14 /* linux is lame */
#endif
+#if OPENSSL_USE_IPV6 && !defined(IPPROTO_IPV6)
+#define IPPROTO_IPV6 41 /* windows is lame */
+#endif
+
+#if defined(__FreeBSD__) && defined(IN6_IS_ADDR_V4MAPPED)
+/* Standard definition causes type-punning problems. */
+#undef IN6_IS_ADDR_V4MAPPED
+#define s6_addr32 __u6_addr.__u6_addr32
+#define IN6_IS_ADDR_V4MAPPED(a) \
+ (((a)->s6_addr32[0] == 0) && \
+ ((a)->s6_addr32[1] == 0) && \
+ ((a)->s6_addr32[2] == htonl(0x0000ffff)))
+#endif
+
#ifdef WATT32
#define sock_write SockWrite /* Watt-32 uses same names */
#define sock_read SockRead
{
#if defined(SO_RCVTIMEO)
bio_dgram_data *data = (bio_dgram_data *)b->ptr;
- int sz = sizeof(int);
+ union { size_t s; int i; } sz = {0};
/* Is a timer active? */
if (data->next_timeout.tv_sec > 0 || data->next_timeout.tv_usec > 0)
/* Read current socket timeout */
#ifdef OPENSSL_SYS_WINDOWS
int timeout;
+
+ sz.i = sizeof(timeout);
if (getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
- (void*)&timeout, &sz) < 0)
+ (void*)&timeout, &sz.i) < 0)
{ perror("getsockopt"); }
else
{
data->socket_timeout.tv_usec = (timeout % 1000) * 1000;
}
#else
+ sz.i = sizeof(data->socket_timeout);
if ( getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
&(data->socket_timeout), (void *)&sz) < 0)
{ perror("getsockopt"); }
+ else if (sizeof(sz.s)!=sizeof(sz.i) && sz.i==0)
+ OPENSSL_assert(sz.s<=sizeof(data->socket_timeout));
#endif
/* Get current time */
return(ret);
}
+static long dgram_get_mtu_overhead(bio_dgram_data *data)
+ {
+ long ret;
+
+ switch (data->peer.sa.sa_family)
+ {
+ case AF_INET:
+ /* Assume this is UDP - 20 bytes for IP, 8 bytes for UDP */
+ ret = 28;
+ break;
+#if OPENSSL_USE_IPV6
+ case AF_INET6:
+#ifdef IN6_IS_ADDR_V4MAPPED
+ if (IN6_IS_ADDR_V4MAPPED(&data->peer.sa_in6.sin6_addr))
+ /* Assume this is UDP - 20 bytes for IP, 8 bytes for UDP */
+ ret = 28;
+ else
+#endif
+ /* Assume this is UDP - 40 bytes for IP, 8 bytes for UDP */
+ ret = 48;
+ break;
+#endif
+ default:
+ /* We don't know. Go with the historical default */
+ ret = 28;
+ break;
+ }
+ return ret;
+ }
+
static long dgram_ctrl(BIO *b, int cmd, long num, void *ptr)
{
long ret=1;
int *ip;
struct sockaddr *to = NULL;
bio_dgram_data *data = NULL;
-#if defined(IP_MTU_DISCOVER) || defined(IP_MTU)
- long sockopt_val = 0;
- unsigned int sockopt_len = 0;
-#endif
-#ifdef OPENSSL_SYS_LINUX
+ int sockopt_val = 0;
+#if defined(OPENSSL_SYS_LINUX) && (defined(IP_MTU_DISCOVER) || defined(IP_MTU))
+ socklen_t sockopt_len; /* assume that system supporting IP_MTU is
+ * modern enough to define socklen_t */
socklen_t addr_len;
union {
struct sockaddr sa;
break;
/* (Linux)kernel sets DF bit on outgoing IP packets */
case BIO_CTRL_DGRAM_MTU_DISCOVER:
-#ifdef OPENSSL_SYS_LINUX
+#if defined(OPENSSL_SYS_LINUX) && defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DO)
addr_len = (socklen_t)sizeof(addr);
memset((void *)&addr, 0, sizeof(addr));
if (getsockname(b->num, &addr.sa, &addr_len) < 0)
ret = 0;
break;
}
- sockopt_len = sizeof(sockopt_val);
switch (addr.sa.sa_family)
{
case AF_INET:
&sockopt_val, sizeof(sockopt_val))) < 0)
perror("setsockopt");
break;
-#if OPENSSL_USE_IPV6 && defined(IPV6_MTU_DISCOVER)
+#if OPENSSL_USE_IPV6 && defined(IPV6_MTU_DISCOVER) && defined(IPV6_PMTUDISC_DO)
case AF_INET6:
sockopt_val = IPV6_PMTUDISC_DO;
if ((ret = setsockopt(b->num, IPPROTO_IPV6, IPV6_MTU_DISCOVER,
ret = -1;
break;
}
- ret = -1;
#else
- break;
+ ret = -1;
#endif
+ break;
case BIO_CTRL_DGRAM_QUERY_MTU:
-#ifdef OPENSSL_SYS_LINUX
+#if defined(OPENSSL_SYS_LINUX) && defined(IP_MTU)
addr_len = (socklen_t)sizeof(addr);
memset((void *)&addr, 0, sizeof(addr));
if (getsockname(b->num, &addr.sa, &addr_len) < 0)
ret = 0;
#endif
break;
+ case BIO_CTRL_DGRAM_GET_FALLBACK_MTU:
+ ret = -dgram_get_mtu_overhead(data);
+ switch (data->peer.sa.sa_family)
+ {
+ case AF_INET:
+ ret += 576;
+ break;
+#if OPENSSL_USE_IPV6
+ case AF_INET6:
+#ifdef IN6_IS_ADDR_V4MAPPED
+ if (IN6_IS_ADDR_V4MAPPED(&data->peer.sa_in6.sin6_addr))
+ ret += 576;
+ else
+#endif
+ ret += 1280;
+ break;
+#endif
+ default:
+ ret += 576;
+ break;
+ }
+ break;
case BIO_CTRL_DGRAM_GET_MTU:
return data->mtu;
break;
#endif
break;
case BIO_CTRL_DGRAM_GET_RECV_TIMEOUT:
-#ifdef OPENSSL_SYS_WINDOWS
{
- int timeout, sz = sizeof(timeout);
+ union { size_t s; int i; } sz = {0};
+#ifdef OPENSSL_SYS_WINDOWS
+ int timeout;
struct timeval *tv = (struct timeval *)ptr;
+
+ sz.i = sizeof(timeout);
if (getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
- (void*)&timeout, &sz) < 0)
+ (void*)&timeout, &sz.i) < 0)
{ perror("getsockopt"); ret = -1; }
else
{
tv->tv_usec = (timeout % 1000) * 1000;
ret = sizeof(*tv);
}
- }
#else
+ sz.i = sizeof(struct timeval);
if ( getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
- ptr, (void *)&ret) < 0)
+ ptr, (void *)&sz) < 0)
{ perror("getsockopt"); ret = -1; }
+ else if (sizeof(sz.s)!=sizeof(sz.i) && sz.i==0)
+ {
+ OPENSSL_assert(sz.s<=sizeof(struct timeval));
+ ret = (int)sz.s;
+ }
+ else
+ ret = sz.i;
#endif
+ }
break;
#endif
#if defined(SO_SNDTIMEO)
#endif
break;
case BIO_CTRL_DGRAM_GET_SEND_TIMEOUT:
-#ifdef OPENSSL_SYS_WINDOWS
{
- int timeout, sz = sizeof(timeout);
+ union { size_t s; int i; } sz = {0};
+#ifdef OPENSSL_SYS_WINDOWS
+ int timeout;
struct timeval *tv = (struct timeval *)ptr;
+
+ sz.i = sizeof(timeout);
if (getsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO,
- (void*)&timeout, &sz) < 0)
+ (void*)&timeout, &sz.i) < 0)
{ perror("getsockopt"); ret = -1; }
else
{
tv->tv_usec = (timeout % 1000) * 1000;
ret = sizeof(*tv);
}
- }
#else
+ sz.i = sizeof(struct timeval);
if ( getsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO,
- ptr, (void *)&ret) < 0)
+ ptr, (void *)&sz) < 0)
{ perror("getsockopt"); ret = -1; }
+ else if (sizeof(sz.s)!=sizeof(sz.i) && sz.i==0)
+ {
+ OPENSSL_assert(sz.s<=sizeof(struct timeval));
+ ret = (int)sz.s;
+ }
+ else
+ ret = sz.i;
#endif
+ }
break;
#endif
case BIO_CTRL_DGRAM_GET_SEND_TIMER_EXP:
ret = 0;
break;
#endif
+ case BIO_CTRL_DGRAM_SET_DONT_FRAG:
+ sockopt_val = num ? 1 : 0;
+
+ switch (data->peer.sa.sa_family)
+ {
+ case AF_INET:
+#if defined(IP_DONTFRAG)
+ if ((ret = setsockopt(b->num, IPPROTO_IP, IP_DONTFRAG,
+ &sockopt_val, sizeof(sockopt_val))) < 0)
+ { perror("setsockopt"); ret = -1; }
+#elif defined(OPENSSL_SYS_LINUX) && defined(IP_MTUDISCOVER)
+ if ((sockopt_val = num ? IP_PMTUDISC_PROBE : IP_PMTUDISC_DONT),
+ (ret = setsockopt(b->num, IPPROTO_IP, IP_MTU_DISCOVER,
+ &sockopt_val, sizeof(sockopt_val))) < 0)
+ { perror("setsockopt"); ret = -1; }
+#elif defined(OPENSSL_SYS_WINDOWS) && defined(IP_DONTFRAGMENT)
+ if ((ret = setsockopt(b->num, IPPROTO_IP, IP_DONTFRAGMENT,
+ (const char *)&sockopt_val, sizeof(sockopt_val))) < 0)
+ { perror("setsockopt"); ret = -1; }
+#else
+ ret = -1;
+#endif
+ break;
+#if OPENSSL_USE_IPV6
+ case AF_INET6:
+#if defined(IPV6_DONTFRAG)
+ if ((ret = setsockopt(b->num, IPPROTO_IPV6, IPV6_DONTFRAG,
+ (const void *)&sockopt_val, sizeof(sockopt_val))) < 0)
+ { perror("setsockopt"); ret = -1; }
+#elif defined(OPENSSL_SYS_LINUX) && defined(IPV6_MTUDISCOVER)
+ if ((sockopt_val = num ? IP_PMTUDISC_PROBE : IP_PMTUDISC_DONT),
+ (ret = setsockopt(b->num, IPPROTO_IPV6, IPV6_MTU_DISCOVER,
+ &sockopt_val, sizeof(sockopt_val))) < 0)
+ { perror("setsockopt"); ret = -1; }
+#else
+ ret = -1;
+#endif
+ break;
+#endif
+ default:
+ ret = -1;
+ break;
+ }
+ break;
+ case BIO_CTRL_DGRAM_GET_MTU_OVERHEAD:
+ ret = dgram_get_mtu_overhead(data);
+ break;
default:
ret=0;
break;
/* Activate SCTP-AUTH for DATA and FORWARD-TSN chunks */
auth.sauth_chunk = OPENSSL_SCTP_DATA_CHUNK_TYPE;
ret = setsockopt(fd, IPPROTO_SCTP, SCTP_AUTH_CHUNK, &auth, sizeof(struct sctp_authchunk));
- OPENSSL_assert(ret >= 0);
+ if (ret < 0)
+ {
+ BIO_vfree(bio);
+ return(NULL);
+ }
auth.sauth_chunk = OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE;
ret = setsockopt(fd, IPPROTO_SCTP, SCTP_AUTH_CHUNK, &auth, sizeof(struct sctp_authchunk));
- OPENSSL_assert(ret >= 0);
+ if (ret < 0)
+ {
+ BIO_vfree(bio);
+ return(NULL);
+ }
/* Test if activation was successful. When using accept(),
* SCTP-AUTH has to be activated for the listening socket
* already, otherwise the connected socket won't use it. */
sockopt_len = (socklen_t)(sizeof(sctp_assoc_t) + 256 * sizeof(uint8_t));
authchunks = OPENSSL_malloc(sockopt_len);
- memset(authchunks, 0, sizeof(sockopt_len));
+ memset(authchunks, 0, sockopt_len);
ret = getsockopt(fd, IPPROTO_SCTP, SCTP_LOCAL_AUTH_CHUNKS, authchunks, &sockopt_len);
- OPENSSL_assert(ret >= 0);
-
- for (p = (unsigned char*) authchunks + sizeof(sctp_assoc_t);
+
+ if (ret < 0)
+ {
+ OPENSSL_free(authchunks);
+ BIO_vfree(bio);
+ return(NULL);
+ }
+
+ for (p = (unsigned char*) authchunks->gauth_chunks;
p < (unsigned char*) authchunks + sockopt_len;
p += sizeof(uint8_t))
{
event.se_type = SCTP_AUTHENTICATION_EVENT;
event.se_on = 1;
ret = setsockopt(fd, IPPROTO_SCTP, SCTP_EVENT, &event, sizeof(struct sctp_event));
- OPENSSL_assert(ret >= 0);
+ if (ret < 0)
+ {
+ BIO_vfree(bio);
+ return(NULL);
+ }
#else
sockopt_len = (socklen_t) sizeof(struct sctp_event_subscribe);
ret = getsockopt(fd, IPPROTO_SCTP, SCTP_EVENTS, &event, &sockopt_len);
- OPENSSL_assert(ret >= 0);
+ if (ret < 0)
+ {
+ BIO_vfree(bio);
+ return(NULL);
+ }
event.sctp_authentication_event = 1;
ret = setsockopt(fd, IPPROTO_SCTP, SCTP_EVENTS, &event, sizeof(struct sctp_event_subscribe));
- OPENSSL_assert(ret >= 0);
+ if (ret < 0)
+ {
+ BIO_vfree(bio);
+ return(NULL);
+ }
#endif
#endif
* larger than the max record size of 2^14 + 2048 + 13
*/
ret = setsockopt(fd, IPPROTO_SCTP, SCTP_PARTIAL_DELIVERY_POINT, &optval, sizeof(optval));
- OPENSSL_assert(ret >= 0);
+ if (ret < 0)
+ {
+ BIO_vfree(bio);
+ return(NULL);
+ }
return(bio);
}
#ifdef SCTP_AUTHENTICATION_EVENT
void dgram_sctp_handle_auth_free_key_event(BIO *b, union sctp_notification *snp)
{
- unsigned int sockopt_len = 0;
int ret;
struct sctp_authkey_event* authkeyevent = &snp->sn_auth_event;
/* delete key */
authkeyid.scact_keynumber = authkeyevent->auth_keynumber;
- sockopt_len = sizeof(struct sctp_authkeyid);
ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_DELETE_KEY,
- &authkeyid, sockopt_len);
+ &authkeyid, sizeof(struct sctp_authkeyid));
}
}
#endif
msg.msg_flags = 0;
n = recvmsg(b->num, &msg, 0);
+ if (n <= 0)
+ {
+ if (n < 0)
+ ret = n;
+ break;
+ }
+
if (msg.msg_controllen > 0)
{
for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg))
}
}
- if (n <= 0)
- {
- if (n < 0)
- ret = n;
- break;
- }
-
if (msg.msg_flags & MSG_NOTIFICATION)
{
snp = (union sctp_notification*) out;
event.se_type = SCTP_SENDER_DRY_EVENT;
event.se_on = 0;
i = setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENT, &event, sizeof(struct sctp_event));
- OPENSSL_assert(i >= 0);
+ if (i < 0)
+ {
+ ret = i;
+ break;
+ }
#else
eventsize = sizeof(struct sctp_event_subscribe);
i = getsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event, &eventsize);
- OPENSSL_assert(i >= 0);
+ if (i < 0)
+ {
+ ret = i;
+ break;
+ }
event.sctp_sender_dry_event = 0;
i = setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event, sizeof(struct sctp_event_subscribe));
- OPENSSL_assert(i >= 0);
+ if (i < 0)
+ {
+ ret = i;
+ break;
+ }
#endif
}
*/
optlen = (socklen_t) sizeof(int);
ret = getsockopt(b->num, SOL_SOCKET, SO_RCVBUF, &optval, &optlen);
- OPENSSL_assert(ret >= 0);
- OPENSSL_assert(optval >= 18445);
+ if (ret >= 0)
+ OPENSSL_assert(optval >= 18445);
/* Test if SCTP doesn't partially deliver below
* max record size (2^14 + 2048 + 13)
optlen = (socklen_t) sizeof(int);
ret = getsockopt(b->num, IPPROTO_SCTP, SCTP_PARTIAL_DELIVERY_POINT,
&optval, &optlen);
- OPENSSL_assert(ret >= 0);
- OPENSSL_assert(optval >= 18445);
+ if (ret >= 0)
+ OPENSSL_assert(optval >= 18445);
/* Partially delivered notification??? Probably a bug.... */
OPENSSL_assert(!(msg.msg_flags & MSG_NOTIFICATION));
optlen = (socklen_t)(sizeof(sctp_assoc_t) + 256 * sizeof(uint8_t));
authchunks = OPENSSL_malloc(optlen);
- memset(authchunks, 0, sizeof(optlen));
+ memset(authchunks, 0, optlen);
ii = getsockopt(b->num, IPPROTO_SCTP, SCTP_PEER_AUTH_CHUNKS, authchunks, &optlen);
- OPENSSL_assert(ii >= 0);
- for (p = (unsigned char*) authchunks + sizeof(sctp_assoc_t);
- p < (unsigned char*) authchunks + optlen;
- p += sizeof(uint8_t))
- {
- if (*p == OPENSSL_SCTP_DATA_CHUNK_TYPE) auth_data = 1;
- if (*p == OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE) auth_forward = 1;
- }
+ if (ii >= 0)
+ for (p = (unsigned char*) authchunks->gauth_chunks;
+ p < (unsigned char*) authchunks + optlen;
+ p += sizeof(uint8_t))
+ {
+ if (*p == OPENSSL_SCTP_DATA_CHUNK_TYPE) auth_data = 1;
+ if (*p == OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE) auth_forward = 1;
+ }
OPENSSL_free(authchunks);
{
long ret=1;
bio_dgram_sctp_data *data = NULL;
- unsigned int sockopt_len = 0;
+ socklen_t sockopt_len = 0;
struct sctp_authkeyid authkeyid;
- struct sctp_authkey *authkey;
+ struct sctp_authkey *authkey = NULL;
data = (bio_dgram_sctp_data *)b->ptr;
* Returns always 1.
*/
break;
+ case BIO_CTRL_DGRAM_GET_MTU_OVERHEAD:
+ /* We allow transport protocol fragmentation so this is irrelevant */
+ ret = 0;
+ break;
case BIO_CTRL_DGRAM_SCTP_SET_IN_HANDSHAKE:
if (num > 0)
data->in_handshake = 1;
/* Add new key */
sockopt_len = sizeof(struct sctp_authkey) + 64 * sizeof(uint8_t);
authkey = OPENSSL_malloc(sockopt_len);
+ if (authkey == NULL)
+ {
+ ret = -1;
+ break;
+ }
memset(authkey, 0x00, sockopt_len);
authkey->sca_keynumber = authkeyid.scact_keynumber + 1;
#ifndef __FreeBSD__
memcpy(&authkey->sca_key[0], ptr, 64 * sizeof(uint8_t));
ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_KEY, authkey, sockopt_len);
+ OPENSSL_free(authkey);
+ authkey = NULL;
if (ret < 0) break;
/* Reset active key */
static void get_current_time(struct timeval *t)
{
-#ifdef OPENSSL_SYS_WIN32
- struct _timeb tb;
- _ftime(&tb);
- t->tv_sec = (long)tb.time;
- t->tv_usec = (long)tb.millitm * 1000;
+#if defined(_WIN32)
+ SYSTEMTIME st;
+ union { unsigned __int64 ul; FILETIME ft; } now;
+
+ GetSystemTime(&st);
+ SystemTimeToFileTime(&st,&now.ft);
+#ifdef __MINGW32__
+ now.ul -= 116444736000000000ULL;
+#else
+ now.ul -= 116444736000000000UI64; /* re-bias to 1/1/1970 */
+#endif
+ t->tv_sec = (long)(now.ul/10000000);
+ t->tv_usec = ((int)(now.ul%10000000))/10;
#elif defined(OPENSSL_SYS_VMS)
struct timeb tb;
ftime(&tb);
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