~drizzle-trunk/drizzle/development : contents of libdrizzle-2.0/state.cc at revision 2472

~drizzle-trunk/drizzle/development : (revision 2472)

/*
 * Drizzle Client & Protocol Library
 *
 * Copyright (C) 2008 Eric Day (eday@oddments.org)
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *
 *     * The names of its contributors may not be used to endorse or
 * promote products derived from this software without specific prior
 * written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

/**
 * @file
 * @brief State machine definitions
 */

#include <libdrizzle-2.0/common.h>

drizzle_return_t drizzle_state_loop(drizzle_con_st *con)
{
  while (drizzle_state_none(con) == false)
  {
    drizzle_return_t ret= con->state_stack[con->state_current - 1](con);
    if (ret != DRIZZLE_RETURN_OK)
    {
      if (ret != DRIZZLE_RETURN_IO_WAIT && ret != DRIZZLE_RETURN_PAUSE &&
          ret != DRIZZLE_RETURN_ERROR_CODE)
      {
        drizzle_con_close(con);
      }

      return ret;
    }
  }

  return DRIZZLE_RETURN_OK;
}

drizzle_return_t drizzle_state_packet_read(drizzle_con_st *con)
{
  drizzle_log_debug(con->drizzle, "drizzle_state_packet_read");

  if (con->buffer_size < 4)
  {
    drizzle_state_push(con, drizzle_state_read);
    return DRIZZLE_RETURN_OK;
  }

  con->packet_size= drizzle_get_byte3(con->buffer_ptr);

  if (con->packet_number != con->buffer_ptr[3])
  {
    drizzle_set_error(con->drizzle, "drizzle_state_packet_read",
                      "bad packet number:%u:%u", con->packet_number,
                      con->buffer_ptr[3]);
    return DRIZZLE_RETURN_BAD_PACKET_NUMBER;
  }

  drizzle_log_debug(con->drizzle, "packet_size= %zu, packet_number= %u",
                    con->packet_size, con->packet_number);

  con->packet_number++;

  con->buffer_ptr+= 4;
  con->buffer_size-= 4;

  drizzle_state_pop(con);
  return DRIZZLE_RETURN_OK;
}

2244.1.1 by Monty Taylor Split libdrizzle into 1.0 and 2.0. Applied the C++ changes to 2.0 branch.	1	/*
	2	* Drizzle Client & Protocol Library
	3	*
	4	* Copyright (C) 2008 Eric Day (eday@oddments.org)
	5	* All rights reserved.
	6	*
	7	* Redistribution and use in source and binary forms, with or without
	8	* modification, are permitted provided that the following conditions are
	9	* met:
	10	*
	11	* * Redistributions of source code must retain the above copyright
	12	* notice, this list of conditions and the following disclaimer.
	13	*
	14	* * Redistributions in binary form must reproduce the above
	15	* copyright notice, this list of conditions and the following disclaimer
	16	* in the documentation and/or other materials provided with the
	17	* distribution.
	18	*
	19	* * The names of its contributors may not be used to endorse or
	20	* promote products derived from this software without specific prior
	21	* written permission.
	22	*
	23	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	24	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	25	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	26	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	27	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	28	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	29	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	30	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	31	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	32	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	33	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	34	*
	35	*/
	36
	37	/**
	38	* @file
	39	* @brief State machine definitions
	40	*/
	41
2449.1.2 by Brian Aker Additional fixes for libdrizzle.	42	#include <libdrizzle-2.0/common.h>
2244.1.1 by Monty Taylor Split libdrizzle into 1.0 and 2.0. Applied the C++ changes to 2.0 branch.	43
	44	drizzle_return_t drizzle_state_loop(drizzle_con_st *con)
	45	{
2449.1.4 by Brian Aker Complete update of libdrizzle	46	while (drizzle_state_none(con) == false)
2244.1.1 by Monty Taylor Split libdrizzle into 1.0 and 2.0. Applied the C++ changes to 2.0 branch.	47	{
2449.1.2 by Brian Aker Additional fixes for libdrizzle.	48	drizzle_return_t ret= con->state_stack[con->state_current - 1](con);
2244.1.1 by Monty Taylor Split libdrizzle into 1.0 and 2.0. Applied the C++ changes to 2.0 branch.	49	if (ret != DRIZZLE_RETURN_OK)
	50	{
	51	if (ret != DRIZZLE_RETURN_IO_WAIT && ret != DRIZZLE_RETURN_PAUSE &&
	52	ret != DRIZZLE_RETURN_ERROR_CODE)
	53	{
	54	drizzle_con_close(con);
	55	}
	56
	57	return ret;
	58	}
	59	}
	60
	61	return DRIZZLE_RETURN_OK;
	62	}
	63
	64	drizzle_return_t drizzle_state_packet_read(drizzle_con_st *con)
	65	{
	66	drizzle_log_debug(con->drizzle, "drizzle_state_packet_read");
	67
	68	if (con->buffer_size < 4)
	69	{
	70	drizzle_state_push(con, drizzle_state_read);
	71	return DRIZZLE_RETURN_OK;
	72	}
	73
	74	con->packet_size= drizzle_get_byte3(con->buffer_ptr);
	75
	76	if (con->packet_number != con->buffer_ptr[3])
	77	{
	78	drizzle_set_error(con->drizzle, "drizzle_state_packet_read",
	79	"bad packet number:%u:%u", con->packet_number,
	80	con->buffer_ptr[3]);
	81	return DRIZZLE_RETURN_BAD_PACKET_NUMBER;
	82	}
	83
	84	drizzle_log_debug(con->drizzle, "packet_size= %zu, packet_number= %u",
	85	con->packet_size, con->packet_number);
	86
	87	con->packet_number++;
	88
	89	con->buffer_ptr+= 4;
	90	con->buffer_size-= 4;
	91
	92	drizzle_state_pop(con);
	93	return DRIZZLE_RETURN_OK;
	94	}