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/* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* 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/common.h>
drizzle_return_t drizzle_state_loop(drizzle_con_st *con)
{
if (con == NULL)
{
return DRIZZLE_RETURN_INVALID_ARGUMENT;
}
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)
{
if (con == NULL)
{
return DRIZZLE_RETURN_INVALID_ARGUMENT;
}
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;
}
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