TDSERRNO
tds_open_socket(TDSSOCKET *tds, struct addrinfo *addr, unsigned int port, int timeout, int *p_oserr)
{
ioctl_nonblocking_t ioctl_nonblocking;
SOCKLEN_T optlen;
TDSCONNECTION *conn = tds->conn;
char ipaddr[128];
int retval, len;
TDSERRNO tds_error = TDSECONN;
*p_oserr = 0;
tds_addrinfo_set_port(addr, port);
tds_addrinfo2str(addr, ipaddr, sizeof(ipaddr));
tdsdump_log(TDS_DBG_INFO1, "Connecting to %s port %d (TDS version %d.%d)\n",
ipaddr, port,
TDS_MAJOR(conn), TDS_MINOR(conn));
conn->s = socket(addr->ai_family, SOCK_STREAM, 0);
if (TDS_IS_SOCKET_INVALID(conn->s)) {
char *errstr = sock_strerror(*p_oserr = sock_errno);
tdsdump_log(TDS_DBG_ERROR, "socket creation error: %s\n", errstr);
sock_strerror_free(errstr);
return TDSESOCK;
}
tds->state = TDS_IDLE;
#ifdef SO_KEEPALIVE
len = 1;
setsockopt(conn->s, SOL_SOCKET, SO_KEEPALIVE, (const void *) &len, sizeof(len));
#endif
#if defined(TCP_KEEPIDLE) && defined(TCP_KEEPINTVL)
len = 40;
setsockopt(conn->s, SOL_TCP, TCP_KEEPIDLE, (const void *) &len, sizeof(len));
len = 2;
setsockopt(conn->s, SOL_TCP, TCP_KEEPINTVL, (const void *) &len, sizeof(len));
#endif
#if defined(__APPLE__) && defined(SO_NOSIGPIPE)
len = 1;
if (setsockopt(conn->s, SOL_SOCKET, SO_NOSIGPIPE, (const void *) &len, sizeof(len))) {
*p_oserr = sock_errno;
tds_connection_close(conn);
return TDSESOCK;
}
#endif
len = 1;
#if defined(USE_NODELAY)
setsockopt(conn->s, SOL_TCP, TCP_NODELAY, (const void *) &len, sizeof(len));
#elif defined(USE_CORK)
if (setsockopt(conn->s, SOL_TCP, TCP_CORK, (const void *) &len, sizeof(len)) < 0)
setsockopt(conn->s, SOL_TCP, TCP_NODELAY, (const void *) &len, sizeof(len));
#else
#error One should be defined
#endif
#ifdef DOS32X /* the other connection doesn't work on WATTCP32 */
if (connect(conn->s, addr->ai_addr, addr->ai_addrlen) < 0) {
char *message;
*p_oserr = sock_errno;
if (asprintf(&message, "tds_open_socket(): %s:%d", ipaddr, port) >= 0) {
perror(message);
free(message);
}
tds_connection_close(conn);
return TDSECONN;
}
#else
if (!timeout) {
/* A timeout of zero means wait forever; 90,000 seconds will feel like forever. */
timeout = 90000;
}
/* enable non-blocking mode */
ioctl_nonblocking = 1;
if (IOCTLSOCKET(conn->s, FIONBIO, &ioctl_nonblocking) < 0) {
*p_oserr = sock_errno;
tds_connection_close(conn);
return TDSEUSCT; /* close enough: "Unable to set communications timer" */
}
retval = connect(conn->s, addr->ai_addr, addr->ai_addrlen);
if (retval == 0) {
tdsdump_log(TDS_DBG_INFO2, "connection established\n");
} else {
int err = *p_oserr = sock_errno;
char *errstr = sock_strerror(err);
tdsdump_log(TDS_DBG_ERROR, "tds_open_socket: connect(2) returned \"%s\"\n", errstr);
sock_strerror_free(errstr);
#if DEBUGGING_CONNECTING_PROBLEM
if (err != ECONNREFUSED && err != ENETUNREACH && err != TDSSOCK_EINPROGRESS) {
tdsdump_dump_buf(TDS_DBG_ERROR, "Contents of sockaddr_in", addr->ai_addr, addr->ai_addrlen);
tdsdump_log(TDS_DBG_ERROR, " sockaddr_in:\t"
"%s = %x\n"
"\t\t\t%s = %x\n"
"\t\t\t%s = %s\n"
, "sin_family", addr->ai_family
, "port", port
, "address", ipaddr
);
}
#endif
if (err != TDSSOCK_EINPROGRESS)
goto not_available;
*p_oserr = TDSSOCK_ETIMEDOUT;
if (tds_select(tds, TDSSELWRITE|TDSSELERR, timeout) == 0) {
tds_error = TDSECONN;
goto not_available;
}
}
#endif /* not DOS32X */
/* check socket error */
optlen = sizeof(len);
len = 0;
if (tds_getsockopt(conn->s, SOL_SOCKET, SO_ERROR, (char *) &len, &optlen) != 0) {
char *errstr = sock_strerror(*p_oserr = sock_errno);
tdsdump_log(TDS_DBG_ERROR, "getsockopt(2) failed: %s\n", errstr);
sock_strerror_free(errstr);
goto not_available;
}
if (len != 0) {
char *errstr = sock_strerror(*p_oserr = len);
tdsdump_log(TDS_DBG_ERROR, "getsockopt(2) reported: %s\n", errstr);
sock_strerror_free(errstr);
goto not_available;
}
tdsdump_log(TDS_DBG_ERROR, "tds_open_socket() succeeded\n");
return TDSEOK;
not_available:
tds_connection_close(conn);
tdsdump_log(TDS_DBG_ERROR, "tds_open_socket() failed\n");
return tds_error;
}
static TDSERRNO
tds_connect_socket(TDSSOCKET *tds, struct addrinfo *addr, unsigned int port, int timeout, int *p_oserr)
{
SOCKLEN_T optlen;
TDSCONNECTION *conn = tds->conn;
char ipaddr[128];
int retval, len;
tds_addrinfo_set_port(addr, port);
tds_addrinfo2str(addr, ipaddr, sizeof(ipaddr));
if (TDS_IS_SOCKET_INVALID(conn->s))
return TDSECONN;
*p_oserr = 0;
tdsdump_log(TDS_DBG_INFO1, "Connecting to %s port %d (TDS version %d.%d)\n",
ipaddr, port,
TDS_MAJOR(conn), TDS_MINOR(conn));
#ifdef DOS32X /* the other connection doesn't work on WATTCP32 */
if (connect(conn->s, addr->ai_addr, addr->ai_addrlen) < 0) {
*p_oserr = sock_errno;
tdsdump_log(TDS_DBG_ERROR, "tds_open_socket(): %s:%d", ipaddr, port);
return TDSECONN;
}
#else
if (!timeout) {
/* A timeout of zero means wait forever; 90,000 seconds will feel like forever. */
timeout = 90000;
}
if ((*p_oserr = tds_socket_set_nonblocking(conn->s)) != 0) {
tds_connection_close(conn);
return TDSEUSCT; /* close enough: "Unable to set communications timer" */
}
retval = connect(conn->s, addr->ai_addr, addr->ai_addrlen);
if (retval == 0) {
tdsdump_log(TDS_DBG_INFO2, "connection established\n");
} else {
int err = *p_oserr = sock_errno;
char *errstr = sock_strerror(err);
tdsdump_log(TDS_DBG_ERROR, "tds_open_socket: connect(2) returned \"%s\"\n", errstr);
sock_strerror_free(errstr);
#if DEBUGGING_CONNECTING_PROBLEM
if (err != ECONNREFUSED && err != ENETUNREACH && err != TDSSOCK_EINPROGRESS) {
tdsdump_dump_buf(TDS_DBG_ERROR, "Contents of sockaddr_in", addr->ai_addr, addr->ai_addrlen);
tdsdump_log(TDS_DBG_ERROR, " sockaddr_in:\t"
"%s = %x\n"
"\t\t\t%s = %x\n"
"\t\t\t%s = %s\n"
, "sin_family", addr->ai_family
, "port", port
, "address", ipaddr
);
}
#endif
if (err != TDSSOCK_EINPROGRESS)
return TDSECONN;
*p_oserr = TDSSOCK_ETIMEDOUT;
if (tds_select(tds, TDSSELWRITE|TDSSELERR, timeout) == 0)
return TDSECONN;
}
#endif /* not DOS32X */
/* check socket error */
optlen = sizeof(len);
len = 0;
if (tds_getsockopt(conn->s, SOL_SOCKET, SO_ERROR, (char *) &len, &optlen) != 0) {
char *errstr = sock_strerror(*p_oserr = sock_errno);
tdsdump_log(TDS_DBG_ERROR, "getsockopt(2) failed: %s\n", errstr);
sock_strerror_free(errstr);
return TDSECONN;
}
if (len != 0) {
char *errstr = sock_strerror(*p_oserr = len);
tdsdump_log(TDS_DBG_ERROR, "getsockopt(2) reported: %s\n", errstr);
sock_strerror_free(errstr);
return TDSECONN;
}
return TDSEOK;
}
