Update from 1.0.0-stable.
[openssl.git] / crypto / bio / bss_dgram.c
index a0cb29b..2e1a6fa 100644 (file)
 
 #include <openssl/bio.h>
 
+#if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_VMS)
+#include <sys/timeb.h>
+#endif
+
+#ifdef OPENSSL_SYS_LINUX
 #define IP_MTU      14 /* linux is lame */
+#endif
 
 #ifdef WATT32
 #define sock_write SockWrite  /* Watt-32 uses same names */
@@ -82,7 +88,9 @@ static int dgram_new(BIO *h);
 static int dgram_free(BIO *data);
 static int dgram_clear(BIO *bio);
 
-int BIO_dgram_should_retry(int s);
+static int BIO_dgram_should_retry(int s);
+
+static void get_current_time(struct timeval *t);
 
 static BIO_METHOD methods_dgramp=
        {
@@ -104,6 +112,8 @@ typedef struct bio_dgram_data_st
        unsigned int connected;
        unsigned int _errno;
        unsigned int mtu;
+       struct timeval next_timeout;
+       struct timeval socket_timeout;
        } bio_dgram_data;
 
 BIO_METHOD *BIO_s_datagram(void)
@@ -165,7 +175,88 @@ static int dgram_clear(BIO *a)
                }
        return(1);
        }
-       
+
+static void dgram_adjust_rcv_timeout(BIO *b)
+       {
+#if defined(SO_RCVTIMEO)
+       bio_dgram_data *data = (bio_dgram_data *)b->ptr;
+       int sz = sizeof(int);
+
+       /* Is a timer active? */
+       if (data->next_timeout.tv_sec > 0 || data->next_timeout.tv_usec > 0)
+               {
+               struct timeval timenow, timeleft;
+
+               /* Read current socket timeout */
+#ifdef OPENSSL_SYS_WINDOWS
+               int timeout;
+               if (getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
+                                          (void*)&timeout, &sz) < 0)
+                       { perror("getsockopt"); }
+               else
+                       {
+                       data->socket_timeout.tv_sec = timeout / 1000;
+                       data->socket_timeout.tv_usec = (timeout % 1000) * 1000;
+                       }
+#else
+               if ( getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, 
+                                               &(data->socket_timeout), (void *)&sz) < 0)
+                       { perror("getsockopt"); }
+#endif
+
+               /* Get current time */
+               get_current_time(&timenow);
+
+               /* Calculate time left until timer expires */
+               memcpy(&timeleft, &(data->next_timeout), sizeof(struct timeval));
+               timeleft.tv_sec -= timenow.tv_sec;
+               timeleft.tv_usec -= timenow.tv_usec;
+               if (timeleft.tv_usec < 0)
+                       {
+                       timeleft.tv_sec--;
+                       timeleft.tv_usec += 1000000;
+                       }
+
+               /* Adjust socket timeout if next handhake message timer
+                * will expire earlier.
+                */
+               if (data->socket_timeout.tv_sec < timeleft.tv_sec ||
+                       (data->socket_timeout.tv_sec == timeleft.tv_sec &&
+                        data->socket_timeout.tv_usec <= timeleft.tv_usec))
+                       {
+#ifdef OPENSSL_SYS_WINDOWS
+                       timeout = timeleft.tv_sec * 1000 + timeleft.tv_usec / 1000;
+                       if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
+                                                  (void*)&timeout, sizeof(timeout)) < 0)
+                               { perror("setsockopt"); }
+#else
+                       if ( setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, &timeleft,
+                                                       sizeof(struct timeval)) < 0)
+                               { perror("setsockopt"); }
+#endif
+                       }
+               }
+#endif
+       }
+
+static void dgram_reset_rcv_timeout(BIO *b)
+       {
+#if defined(SO_RCVTIMEO)
+       bio_dgram_data *data = (bio_dgram_data *)b->ptr;
+#ifdef OPENSSL_SYS_WINDOWS
+       int timeout = data->socket_timeout.tv_sec * 1000 +
+                                 data->socket_timeout.tv_usec / 1000;
+       if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
+                                  (void*)&timeout, sizeof(timeout)) < 0)
+               { perror("setsockopt"); }
+#else
+       if ( setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, &(data->socket_timeout),
+                                       sizeof(struct timeval)) < 0)
+               { perror("setsockopt"); }
+#endif
+#endif
+       }
+
 static int dgram_read(BIO *b, char *out, int outl)
        {
        int ret=0;
@@ -183,7 +274,9 @@ static int dgram_read(BIO *b, char *out, int outl)
                 * but this is not universal. Cast to (void *) to avoid
                 * compiler warnings.
                 */
+               dgram_adjust_rcv_timeout(b);
                ret=recvfrom(b->num,out,outl,0,&peer,(void *)&peerlen);
+               dgram_reset_rcv_timeout(b);
 
                if ( ! data->connected  && ret > 0)
                        BIO_ctrl(b, BIO_CTRL_DGRAM_CONNECT, 0, &peer);
@@ -208,9 +301,13 @@ static int dgram_write(BIO *b, const char *in, int inl)
        clear_socket_error();
 
     if ( data->connected )
-        ret=send(b->num,in,inl,0);
+        ret=writesocket(b->num,in,inl);
     else
+#if defined(NETWARE_CLIB) && defined(NETWARE_BSDSOCK)
+        ret=sendto(b->num, (char *)in, inl, 0, &data->peer, sizeof(data->peer));
+#else
         ret=sendto(b->num, in, inl, 0, &data->peer, sizeof(data->peer));
+#endif
 
        BIO_clear_retry_flags(b);
        if (ret <= 0)
@@ -236,8 +333,14 @@ static long dgram_ctrl(BIO *b, int cmd, long num, void *ptr)
        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
+       socklen_t addr_len;
+       struct sockaddr_storage addr;
+#endif
 
        data = (bio_dgram_data *)b->ptr;
 
@@ -296,24 +399,87 @@ static long dgram_ctrl(BIO *b, int cmd, long num, void *ptr)
 #endif
                break;
                /* (Linux)kernel sets DF bit on outgoing IP packets */
-#ifdef IP_MTU_DISCOVER
        case BIO_CTRL_DGRAM_MTU_DISCOVER:
-               sockopt_val = IP_PMTUDISC_DO;
-               if ((ret = setsockopt(b->num, IPPROTO_IP, IP_MTU_DISCOVER,
-                       &sockopt_val, sizeof(sockopt_val))) < 0)
-                       perror("setsockopt");
+#ifdef OPENSSL_SYS_LINUX
+               addr_len = (socklen_t)sizeof(struct sockaddr_storage);
+               memset((void *)&addr, 0, sizeof(struct sockaddr_storage));
+               if (getsockname(b->num, (void *)&addr, &addr_len) < 0)
+                       {
+                       ret = 0;
+                       break;
+                       }
+               sockopt_len = sizeof(sockopt_val);
+               switch (addr.ss_family)
+                       {
+               case AF_INET:
+                       sockopt_val = IP_PMTUDISC_DO;
+                       if ((ret = setsockopt(b->num, IPPROTO_IP, IP_MTU_DISCOVER,
+                               &sockopt_val, sizeof(sockopt_val))) < 0)
+                               perror("setsockopt");
+                       break;
+               case AF_INET6:
+                       sockopt_val = IPV6_PMTUDISC_DO;
+                       if ((ret = setsockopt(b->num, IPPROTO_IPV6, IPV6_MTU_DISCOVER,
+                               &sockopt_val, sizeof(sockopt_val))) < 0)
+                               perror("setsockopt");
+                       break;
+               default:
+                       ret = -1;
+                       break;
+                       }
+               ret = -1;
+#else
                break;
 #endif
        case BIO_CTRL_DGRAM_QUERY_MTU:
-         sockopt_len = sizeof(sockopt_val);
-               if ((ret = getsockopt(b->num, IPPROTO_IP, IP_MTU, (void *)&sockopt_val,
-                       &sockopt_len)) < 0 || sockopt_val < 0)
-                       { ret = 0; }
-               else
+#ifdef OPENSSL_SYS_LINUX
+               addr_len = (socklen_t)sizeof(struct sockaddr_storage);
+               memset((void *)&addr, 0, sizeof(struct sockaddr_storage));
+               if (getsockname(b->num, (void *)&addr, &addr_len) < 0)
                        {
-                       data->mtu = sockopt_val;
-                       ret = data->mtu;
+                       ret = 0;
+                       break;
                        }
+               sockopt_len = sizeof(sockopt_val);
+               switch (addr.ss_family)
+                       {
+               case AF_INET:
+                       if ((ret = getsockopt(b->num, IPPROTO_IP, IP_MTU, (void *)&sockopt_val,
+                               &sockopt_len)) < 0 || sockopt_val < 0)
+                               {
+                               ret = 0;
+                               }
+                       else
+                               {
+                               /* we assume that the transport protocol is UDP and no
+                                * IP options are used.
+                                */
+                               data->mtu = sockopt_val - 8 - 20;
+                               ret = data->mtu;
+                               }
+                       break;
+               case AF_INET6:
+                       if ((ret = getsockopt(b->num, IPPROTO_IPV6, IPV6_MTU, (void *)&sockopt_val,
+                               &sockopt_len)) < 0 || sockopt_val < 0)
+                               {
+                               ret = 0;
+                               }
+                       else
+                               {
+                               /* we assume that the transport protocol is UDP and no
+                                * IPV6 options are used.
+                                */
+                               data->mtu = sockopt_val - 8 - 40;
+                               ret = data->mtu;
+                               }
+                       break;
+               default:
+                       ret = 0;
+                       break;
+                       }
+#else
+               ret = 0;
+#endif
                break;
        case BIO_CTRL_DGRAM_GET_MTU:
                return data->mtu;
@@ -341,30 +507,93 @@ static long dgram_ctrl(BIO *b, int cmd, long num, void *ptr)
 
         memcpy(&(data->peer), to, sizeof(struct sockaddr));
         break;
+       case BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT:
+               memcpy(&(data->next_timeout), ptr, sizeof(struct timeval));             
+               break;
+#if defined(SO_RCVTIMEO)
        case BIO_CTRL_DGRAM_SET_RECV_TIMEOUT:
+#ifdef OPENSSL_SYS_WINDOWS
+               {
+               struct timeval *tv = (struct timeval *)ptr;
+               int timeout = tv->tv_sec * 1000 + tv->tv_usec/1000;
+               if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
+                       (void*)&timeout, sizeof(timeout)) < 0)
+                       { perror("setsockopt"); ret = -1; }
+               }
+#else
                if ( setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, ptr,
                        sizeof(struct timeval)) < 0)
                        { perror("setsockopt"); ret = -1; }
+#endif
                break;
        case BIO_CTRL_DGRAM_GET_RECV_TIMEOUT:
+#ifdef OPENSSL_SYS_WINDOWS
+               {
+               int timeout, sz = sizeof(timeout);
+               struct timeval *tv = (struct timeval *)ptr;
+               if (getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO,
+                       (void*)&timeout, &sz) < 0)
+                       { perror("getsockopt"); ret = -1; }
+               else
+                       {
+                       tv->tv_sec = timeout / 1000;
+                       tv->tv_usec = (timeout % 1000) * 1000;
+                       ret = sizeof(*tv);
+                       }
+               }
+#else
                if ( getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, 
                        ptr, (void *)&ret) < 0)
                        { perror("getsockopt"); ret = -1; }
+#endif
                break;
+#endif
+#if defined(SO_SNDTIMEO)
        case BIO_CTRL_DGRAM_SET_SEND_TIMEOUT:
+#ifdef OPENSSL_SYS_WINDOWS
+               {
+               struct timeval *tv = (struct timeval *)ptr;
+               int timeout = tv->tv_sec * 1000 + tv->tv_usec/1000;
+               if (setsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO,
+                       (void*)&timeout, sizeof(timeout)) < 0)
+                       { perror("setsockopt"); ret = -1; }
+               }
+#else
                if ( setsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO, ptr,
                        sizeof(struct timeval)) < 0)
                        { perror("setsockopt"); ret = -1; }
+#endif
                break;
        case BIO_CTRL_DGRAM_GET_SEND_TIMEOUT:
+#ifdef OPENSSL_SYS_WINDOWS
+               {
+               int timeout, sz = sizeof(timeout);
+               struct timeval *tv = (struct timeval *)ptr;
+               if (getsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO,
+                       (void*)&timeout, &sz) < 0)
+                       { perror("getsockopt"); ret = -1; }
+               else
+                       {
+                       tv->tv_sec = timeout / 1000;
+                       tv->tv_usec = (timeout % 1000) * 1000;
+                       ret = sizeof(*tv);
+                       }
+               }
+#else
                if ( getsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO, 
                        ptr, (void *)&ret) < 0)
                        { perror("getsockopt"); ret = -1; }
+#endif
                break;
+#endif
        case BIO_CTRL_DGRAM_GET_SEND_TIMER_EXP:
                /* fall-through */
        case BIO_CTRL_DGRAM_GET_RECV_TIMER_EXP:
+#ifdef OPENSSL_SYS_WINDOWS
+               if ( data->_errno == WSAETIMEDOUT)
+#else
                if ( data->_errno == EAGAIN)
+#endif
                        {
                        ret = 1;
                        data->_errno = 0;
@@ -399,7 +628,7 @@ static int dgram_puts(BIO *bp, const char *str)
        return(ret);
        }
 
-int BIO_dgram_should_retry(int i)
+static int BIO_dgram_should_retry(int i)
        {
        int err;
 
@@ -482,3 +711,20 @@ int BIO_dgram_non_fatal_error(int err)
        return(0);
        }
 #endif
+
+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;
+#elif defined(OPENSSL_SYS_VMS)
+       struct timeb tb;
+       ftime(&tb);
+       t->tv_sec = (long)tb.time;
+       t->tv_usec = (long)tb.millitm * 1000;
+#else
+       gettimeofday(t, NULL);
+#endif
+       }