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  • Committer: Monty Taylor
  • Date: 2010-08-20 15:05:54 UTC
  • mfrom: (1720.1.7 build)
  • Revision ID: mordred@inaugust.com-20100820150554-fuwf8zs8qpzhpx6y
Added libdrizzle to the tree.

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libdrizzle/state.c
 
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/*
 
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 * Drizzle Client & Protocol Library
 
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 *
 
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 * Copyright (C) 2008 Eric Day (eday@oddments.org)
 
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 * All rights reserved.
 
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 *
 
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 * Use and distribution licensed under the BSD license.  See
 
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 * the COPYING file in this directory for full text.
 
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 */
 
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/**
 
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 * @file
 
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 * @brief State machine definitions
 
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 */
 
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#include "common.h"
 
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drizzle_return_t drizzle_state_loop(drizzle_con_st *con)
 
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{
 
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  drizzle_return_t ret;
 
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  while (!drizzle_state_none(con))
 
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  {
 
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    ret= con->state_stack[con->state_current - 1](con);
 
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    if (ret != DRIZZLE_RETURN_OK)
 
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    {
 
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      if (ret != DRIZZLE_RETURN_IO_WAIT && ret != DRIZZLE_RETURN_PAUSE &&
 
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          ret != DRIZZLE_RETURN_ERROR_CODE)
 
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      {
 
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        drizzle_con_close(con);
 
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      }
 
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      return ret;
 
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    }
 
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  }
 
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  return DRIZZLE_RETURN_OK;
 
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}
 
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drizzle_return_t drizzle_state_packet_read(drizzle_con_st *con)
 
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{
 
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  drizzle_log_debug(con->drizzle, "drizzle_state_packet_read");
 
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  if (con->buffer_size < 4)
 
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  {
 
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    drizzle_state_push(con, drizzle_state_read);
 
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    return DRIZZLE_RETURN_OK;
 
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  }
 
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  con->packet_size= drizzle_get_byte3(con->buffer_ptr);
 
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  if (con->packet_number != con->buffer_ptr[3])
 
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  {
 
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    drizzle_set_error(con->drizzle, "drizzle_state_packet_read",
 
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                      "bad packet number:%u:%u", con->packet_number,
 
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                      con->buffer_ptr[3]);
 
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    return DRIZZLE_RETURN_BAD_PACKET_NUMBER;
 
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  }
 
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  drizzle_log_debug(con->drizzle, "packet_size= %zu, packet_number= %u",
 
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                    con->packet_size, con->packet_number);
 
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  con->packet_number++;
 
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  con->buffer_ptr+= 4;
 
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  con->buffer_size-= 4;
 
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  drizzle_state_pop(con);
 
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  return DRIZZLE_RETURN_OK;
 
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}