static int
udp_tl_read_message (fd_set * osip_fdset)
{
char *buf;
int i;
if (udp_socket <= 0)
return -1;
if (FD_ISSET (udp_socket, osip_fdset))
{
struct sockaddr_storage sa;
#ifdef __linux
socklen_t slen;
#else
int slen;
#endif
if (eXtl_udp.proto_family == AF_INET)
slen = sizeof (struct sockaddr_in);
else
slen = sizeof (struct sockaddr_in6);
buf = (char *) osip_malloc (SIP_MESSAGE_MAX_LENGTH * sizeof (char) + 1);
if (buf == NULL)
return OSIP_NOMEM;
i = recvfrom (udp_socket, buf,
SIP_MESSAGE_MAX_LENGTH, 0, (struct sockaddr *) &sa, &slen);
#ifdef ENABLE_MYCRYPT
CRYPT_DATA_SIP((unsigned char *)buf, i);
#endif // ENABLE_MYCRYPT
//SIP解密点
if (i > 5)
{
char src6host[NI_MAXHOST];
int recvport = 0;
int err;
osip_strncpy (buf + i, "\0", 1);
OSIP_TRACE (osip_trace (__FILE__, __LINE__, OSIP_INFO1, NULL,
"Received message: \n%s\n", buf));
memset (src6host, 0, sizeof (src6host));
if (eXtl_udp.proto_family == AF_INET)
recvport = ntohs (((struct sockaddr_in *) &sa)->sin_port);
else
recvport = ntohs (((struct sockaddr_in6 *) &sa)->sin6_port);
#if defined(__arc__)
{
struct sockaddr_in *fromsa = (struct sockaddr_in *) &sa;
char *tmp;
tmp = inet_ntoa (fromsa->sin_addr);
if (tmp == NULL)
{
OSIP_TRACE (osip_trace
(__FILE__, __LINE__, OSIP_ERROR, NULL,
"Message received from: NULL:%i inet_ntoa failure\n",
recvport));
} else
{
snprintf (src6host, sizeof (src6host), "%s", tmp);
OSIP_TRACE (osip_trace
(__FILE__, __LINE__, OSIP_INFO1, NULL,
"Message received from: %s:%i\n", src6host,
recvport));
}
}
#else
err = getnameinfo ((struct sockaddr *) &sa, slen,
src6host, NI_MAXHOST, NULL, 0, NI_NUMERICHOST);
if (err != 0)
{
OSIP_TRACE (osip_trace
(__FILE__, __LINE__, OSIP_ERROR, NULL,
"Message received from: NULL:%i getnameinfo failure\n",
recvport));
snprintf (src6host, sizeof (src6host), "127.0.0.1");
} else
{
OSIP_TRACE (osip_trace
(__FILE__, __LINE__, OSIP_INFO1, NULL,
"Message received from: %s:%i\n", src6host, recvport));
}
#endif
OSIP_TRACE (osip_trace
(__FILE__, __LINE__, OSIP_INFO1, NULL,
"Message received from: %s:%i\n", src6host, recvport));
_eXosip_handle_incoming_message (buf, i, udp_socket, src6host, recvport);
}
#ifndef MINISIZE
else if (i < 0)
{
OSIP_TRACE (osip_trace (__FILE__, __LINE__, OSIP_ERROR, NULL,
"Could not read socket\n"));
} else
{
OSIP_TRACE (osip_trace (__FILE__, __LINE__, OSIP_INFO1, NULL,
"Dummy SIP message received\n"));
}
#endif
osip_free (buf);
}
return OSIP_SUCCESS;
}
static int
tcp_tl_read_message(fd_set *osip_fdset)
{
int pos = 0;
char *buf;
if (FD_ISSET (tcp_socket, osip_fdset))
{
/* accept incoming connection */
char src6host[NI_MAXHOST];
int recvport = 0;
struct sockaddr_storage sa;
int sock;
int i;
#ifdef __linux
socklen_t slen;
#else
int slen;
#endif
if (eXtl_tcp.proto_family == AF_INET)
slen = sizeof (struct sockaddr_in);
else
slen = sizeof (struct sockaddr_in6);
for (pos = 0; pos < EXOSIP_MAX_SOCKETS; pos++)
{
if (tcp_socket_tab[pos].socket == 0)
break;
}
OSIP_TRACE (osip_trace (__FILE__, __LINE__, OSIP_INFO3, NULL,
"creating TCP socket at index: %i\n", pos));
sock = accept (tcp_socket,
(struct sockaddr *) &sa, &slen);
if (sock < 0)
{
OSIP_TRACE (osip_trace (__FILE__, __LINE__, OSIP_ERROR, NULL,
"Error accepting TCP socket\n"));
}
else
{
tcp_socket_tab[pos].socket = sock;
OSIP_TRACE (osip_trace (__FILE__, __LINE__, OSIP_INFO1, NULL,
"New TCP connection accepted\n"));
memset (src6host, 0, sizeof (src6host));
if (eXtl_tcp.proto_family == AF_INET)
recvport = ntohs (((struct sockaddr_in *) &sa)->sin_port);
else
recvport = ntohs (((struct sockaddr_in6 *) &sa)->sin6_port);
#if defined(__arc__)
{
struct sockaddr_in *fromsa = (struct sockaddr_in *) &sa;
char *tmp;
tmp = inet_ntoa(fromsa->sin_addr);
if (tmp==NULL)
{
OSIP_TRACE (osip_trace
(__FILE__, __LINE__, OSIP_ERROR, NULL,
"Message received from: NULL:%i inet_ntoa failure\n",
recvport));
}
else
{
snprintf(src6host, sizeof(src6host), "%s", tmp);
OSIP_TRACE (osip_trace
(__FILE__, __LINE__, OSIP_INFO1, NULL,
"Message received from: %s:%i\n", src6host, recvport));
osip_strncpy (tcp_socket_tab[pos].remote_ip, src6host,
sizeof (tcp_socket_tab[pos].remote_ip)-1);
tcp_socket_tab[pos].remote_port = recvport;
}
}
#else
i = getnameinfo ((struct sockaddr *) &sa, slen,
src6host, NI_MAXHOST, NULL, 0, NI_NUMERICHOST);
if (i != 0)
{
OSIP_TRACE (osip_trace
(__FILE__, __LINE__, OSIP_ERROR, NULL,
"Message received from: NULL:%i getnameinfo failure\n",
recvport));
snprintf(src6host, sizeof(src6host), "127.0.0.1");
}
else
{
OSIP_TRACE (osip_trace
(__FILE__, __LINE__, OSIP_INFO1, NULL,
"Message received from: %s:%i\n", src6host, recvport));
osip_strncpy (tcp_socket_tab[pos].remote_ip, src6host,
sizeof (tcp_socket_tab[pos].remote_ip)-1);
tcp_socket_tab[pos].remote_port = recvport;
}
#endif
}
}
buf=NULL;
for (pos = 0; pos < EXOSIP_MAX_SOCKETS; pos++)
{
if (tcp_socket_tab[pos].socket > 0
&& FD_ISSET (tcp_socket_tab[pos].socket, osip_fdset))
{
int i;
if (buf==NULL)
buf = (char *) osip_malloc (SIP_MESSAGE_MAX_LENGTH * sizeof (char) + 1);
if (buf==NULL)
return -1;
i = recv (tcp_socket_tab[pos].socket, buf, SIP_MESSAGE_MAX_LENGTH, 0);
if (i > 5)
{
osip_strncpy (buf + i, "\0", 1);
OSIP_TRACE (osip_trace
(__FILE__, __LINE__, OSIP_INFO1, NULL,
"Received TCP message: \n%s\n", buf));
_eXosip_handle_incoming_message (buf, i,
tcp_socket_tab[pos].socket,
tcp_socket_tab[pos].remote_ip,
tcp_socket_tab[pos].remote_port);
}
else if (i < 0)
{
OSIP_TRACE (osip_trace
(__FILE__, __LINE__, OSIP_ERROR, NULL,
"Could not read socket - close it\n"));
close (tcp_socket_tab[pos].socket);
memset (&(tcp_socket_tab[pos]), 0, sizeof (tcp_socket_tab[pos]));
}
else if (i == 0)
{
OSIP_TRACE (osip_trace
(__FILE__, __LINE__, OSIP_INFO1, NULL,
"End of stream (read 0 byte from %s:%i)\n",
tcp_socket_tab[pos].remote_ip,
tcp_socket_tab[pos].remote_port));
close (tcp_socket_tab[pos].socket);
memset (&(tcp_socket_tab[pos]), 0, sizeof (tcp_socket_tab[pos]));
}
#ifndef MINISIZE
else
{
/* we expect at least one byte, otherwise there's no doubt that it is not a sip message ! */
OSIP_TRACE (osip_trace
(__FILE__, __LINE__, OSIP_INFO1, NULL,
"Dummy SIP message received (size=%i)\n", i));
}
#endif
}
}
if (buf!=NULL)
osip_free (buf);
return 0;
}
static int
dtls_tl_read_message(fd_set *osip_fdset)
{
char *enc_buf;
char *dec_buf;
int i;
int enc_buf_len;
if (dtls_socket<=0)
return -1;
if (FD_ISSET (dtls_socket, osip_fdset))
{
struct sockaddr_storage sa;
#ifdef __linux
socklen_t slen;
#else
int slen;
#endif
if (eXtl_dtls.proto_family == AF_INET)
slen = sizeof (struct sockaddr_in);
else
slen = sizeof (struct sockaddr_in6);
enc_buf = (char *) osip_malloc (SIP_MESSAGE_MAX_LENGTH * sizeof (char) + 1);
if (enc_buf==NULL)
return -1;
enc_buf_len = recvfrom (dtls_socket, enc_buf,
SIP_MESSAGE_MAX_LENGTH, 0,
(struct sockaddr *) &sa, &slen);
if (enc_buf_len > 5)
{
char src6host[NI_MAXHOST];
int recvport = 0;
int err;
BIO *rbio;
struct socket_tab *socket_tab_used=NULL;
int pos;
osip_strncpy (enc_buf + enc_buf_len, "\0", 1);
OSIP_TRACE (osip_trace (__FILE__, __LINE__, OSIP_INFO1, NULL,
"Received message: \n%s\n", enc_buf));
memset (src6host, 0, sizeof (src6host));
if (eXtl_dtls.proto_family == AF_INET)
recvport = ntohs (((struct sockaddr_in *) &sa)->sin_port);
else
recvport = ntohs (((struct sockaddr_in6 *) &sa)->sin6_port);
#if defined(__arc__)
{
struct sockaddr_in *fromsa = (struct sockaddr_in *) &sa;
char *tmp;
tmp = inet_ntoa(fromsa->sin_addr);
if (tmp==NULL)
{
OSIP_TRACE (osip_trace
(__FILE__, __LINE__, OSIP_ERROR, NULL,
"Message received from: NULL:%i inet_ntoa failure\n",
recvport));
}
else
{
snprintf(src6host, sizeof(src6host), "%s", tmp);
OSIP_TRACE (osip_trace
(__FILE__, __LINE__, OSIP_INFO1, NULL,
"Message received from: %s:%i\n", src6host, recvport));
}
}
#else
err = getnameinfo ((struct sockaddr *) &sa, slen,
src6host, NI_MAXHOST,
NULL, 0, NI_NUMERICHOST);
if (err != 0)
{
OSIP_TRACE (osip_trace
(__FILE__, __LINE__, OSIP_ERROR, NULL,
"Message received from: NULL:%i getnameinfo failure\n",
recvport));
snprintf(src6host, sizeof(src6host), "127.0.0.1");
}
else
{
OSIP_TRACE (osip_trace
(__FILE__, __LINE__, OSIP_INFO1, NULL,
"Message received from: %s:%i\n",
src6host, recvport));
}
#endif
OSIP_TRACE (osip_trace
(__FILE__, __LINE__, OSIP_INFO1, NULL,
"Message received from: %s:%i\n",
src6host, recvport));
for (pos = 0; pos < EXOSIP_MAX_SOCKETS; pos++)
{
if (dtls_socket_tab[pos].ssl_conn != NULL)
{
if (dtls_socket_tab[pos].remote_port == recvport &&
(strcmp (dtls_socket_tab[pos].remote_ip, src6host) == 0))
{
socket_tab_used = &dtls_socket_tab[pos];
break;
}
}
}
if (socket_tab_used==NULL)
{
for (pos = 0; pos < EXOSIP_MAX_SOCKETS; pos++)
{
if (dtls_socket_tab[pos].ssl_conn == NULL)
{
/* should accept this connection? */
break;
}
}
OSIP_TRACE (osip_trace (__FILE__, __LINE__, OSIP_INFO3, NULL,
"creating DTLS socket at index: %i\n", pos));
if (pos<0)
{
/* delete an old one! */
pos=0;
if (dtls_socket_tab[pos].ssl_conn != NULL)
{
shutdown_free_client_dtls (pos);
shutdown_free_server_dtls (pos);
}
memset(&dtls_socket_tab[pos], 0, sizeof(struct socket_tab));
}
}
if (dtls_socket_tab[pos].ssl_conn==NULL)
{
BIO *wbio;
if (!SSL_CTX_check_private_key (server_ctx))
{
OSIP_TRACE (osip_trace
(__FILE__, __LINE__, OSIP_ERROR, NULL,
"SSL CTX private key check error\n"));
osip_free(enc_buf);
return -1;
}
/* behave as a server: */
dtls_socket_tab[pos].ssl_conn = SSL_new (server_ctx);
if (dtls_socket_tab[pos].ssl_conn == NULL)
{
OSIP_TRACE (osip_trace
(__FILE__, __LINE__, OSIP_ERROR, NULL,
"SSL_new error\n"));
osip_free(enc_buf);
return -1;
}
/* No MTU query */
SSL_set_options (dtls_socket_tab[pos].ssl_conn, SSL_OP_NO_QUERY_MTU);
SSL_set_mtu (dtls_socket_tab[pos].ssl_conn, 2000);
/* MTU query */
/* BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL); */
SSL_set_options (dtls_socket_tab[pos].ssl_conn, SSL_OP_COOKIE_EXCHANGE);
wbio = BIO_new_dgram (dtls_socket,
BIO_NOCLOSE);
BIO_dgram_set_peer (wbio, &sa);
SSL_set_bio (dtls_socket_tab[pos].ssl_conn, NULL, wbio);
SSL_set_accept_state (dtls_socket_tab[pos].ssl_conn);
dtls_socket_tab[pos].ssl_state = 0;
dtls_socket_tab[pos].ssl_type = EXOSIP_AS_A_SERVER;
osip_strncpy (dtls_socket_tab[pos].remote_ip, src6host,
sizeof (dtls_socket_tab[pos].remote_ip));
dtls_socket_tab[pos].remote_port = recvport;
OSIP_TRACE (osip_trace (__FILE__, __LINE__, OSIP_INFO1, NULL,
"New DTLS connection accepted\n"));
}
dec_buf = (char *) osip_malloc (SIP_MESSAGE_MAX_LENGTH * sizeof (char) + 1);
if (dec_buf==NULL)
{
OSIP_TRACE (osip_trace
(__FILE__, __LINE__, OSIP_ERROR, NULL,
"Allocation error\n"));
osip_free(enc_buf);
return -1;
}
rbio = BIO_new_mem_buf (enc_buf, enc_buf_len);
BIO_set_mem_eof_return (rbio, -1);
dtls_socket_tab[pos].ssl_conn->rbio = rbio;
i = SSL_read (dtls_socket_tab[pos].ssl_conn, dec_buf, SIP_MESSAGE_MAX_LENGTH);
/* done with the rbio */
BIO_free (dtls_socket_tab[pos].ssl_conn->rbio);
dtls_socket_tab[pos].ssl_conn->rbio = BIO_new (BIO_s_mem ());
if (i > 5)
{
osip_strncpy (dec_buf + i, "\0", 1);
_eXosip_handle_incoming_message(dec_buf, i, dtls_socket, src6host, recvport);
}
#ifndef MINISIZE
else if (i <= 0)
{
err = SSL_get_error (dtls_socket_tab[pos].ssl_conn, i);
print_ssl_error (err);
if (err==SSL_ERROR_SYSCALL)
{
OSIP_TRACE (osip_trace
(__FILE__, __LINE__, OSIP_WARNING,
NULL, "DTLS SYSCALL on SSL_read\n"));
}
else if (err==SSL_ERROR_SSL
|| err==SSL_ERROR_ZERO_RETURN)
{
OSIP_TRACE (osip_trace
(__FILE__, __LINE__, OSIP_WARNING,
NULL, "DTLS closed\n"));
shutdown_free_client_dtls (pos);
shutdown_free_server_dtls (pos);
memset (&(dtls_socket_tab[pos]), 0, sizeof (dtls_socket_tab[pos]));
}
}
else
{
OSIP_TRACE (osip_trace (__FILE__, __LINE__, OSIP_INFO1, NULL,
"Dummy SIP message received\n"));
}
#endif
osip_free (dec_buf);
osip_free (enc_buf);
}
}
return 0;
}