text: /**
   * \addtogroup httpd
   * @{
   */
  
  /**
   * \file
   *         Web server script interface
   * \author
   *         Adam Dunkels <adam@sics.se>
   *
   */
  
  /*
   * Copyright (c) 2001-2006, Adam Dunkels.
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. 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.
   * 3. The name of the author may not be used to endorse or promote
   *    products derived from this software without specific prior
   *    written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
   *
   * This file is part of the uIP TCP/IP stack.
   *
   * $Id: httpd-cgi.c,v 1.2 2006/06/11 21:46:37 adam Exp $
   *
   */
  #include "FreeRTOS.h"
  #include "uip.h"
  #include "psock.h"
  #include "httpd.h"
  #include "httpd-cgi.h"
  #include "httpd-fs.h"
  
  #include <stdio.h>
  #include <string.h>
  
  HTTPD_CGI_CALL(file, "file-stats", file_stats);
  HTTPD_CGI_CALL(tcp, "tcp-connections", tcp_stats);
  HTTPD_CGI_CALL(net, "net-stats", net_stats);
  HTTPD_CGI_CALL(rtos, "rtos-stats", rtos_stats );
  HTTPD_CGI_CALL(run, "run-time", run_time );
  HTTPD_CGI_CALL(io, "led-io", led_io );
  
  
  static const struct httpd_cgi_call *calls[] = { &file, &tcp, &net, &rtos, &run, &io, NULL };
  
  /*---------------------------------------------------------------------------*/
  static
  PT_THREAD(nullfunction(struct httpd_state *s, char *ptr))
  {
    PSOCK_BEGIN(&s->sout);
    ( void ) ptr;
    PSOCK_END(&s->sout);
  }
  /*---------------------------------------------------------------------------*/
  httpd_cgifunction
  httpd_cgi(char *name)
  {
    const struct httpd_cgi_call **f;
  
    /* Find the matching name in the table, return the function. */
    for(f = calls; *f != NULL; ++f) {
      if(strncmp((*f)->name, name, strlen((*f)->name)) == 0) {
        return (*f)->function;
      }
    }
    return nullfunction;
  }
  /*---------------------------------------------------------------------------*/
  static unsigned short
  generate_file_stats(void *arg)
  {
    char *f = (char *)arg;
    return snprintf((char *)uip_appdata, UIP_APPDATA_SIZE, "%5u", httpd_fs_count(f));
  }
  /*---------------------------------------------------------------------------*/
  static
  PT_THREAD(file_stats(struct httpd_state *s, char *ptr))
  {
    PSOCK_BEGIN(&s->sout);
  
    PSOCK_GENERATOR_SEND(&s->sout, generate_file_stats, strchr(ptr, ' ') + 1);
  
    PSOCK_END(&s->sout);
  }
  /*---------------------------------------------------------------------------*/
  static const char closed[] =   /*  "CLOSED",*/
  {0x43, 0x4c, 0x4f, 0x53, 0x45, 0x44, 0};
  static const char syn_rcvd[] = /*  "SYN-RCVD",*/
  {0x53, 0x59, 0x4e, 0x2d, 0x52, 0x43, 0x56,
   0x44,  0};
  static const char syn_sent[] = /*  "SYN-SENT",*/
  {0x53, 0x59, 0x4e, 0x2d, 0x53, 0x45, 0x4e,
   0x54,  0};
  static const char established[] = /*  "ESTABLISHED",*/
  {0x45, 0x53, 0x54, 0x41, 0x42, 0x4c, 0x49, 0x53, 0x48,
   0x45, 0x44, 0};
  static const char fin_wait_1[] = /*  "FIN-WAIT-1",*/
  {0x46, 0x49, 0x4e, 0x2d, 0x57, 0x41, 0x49,
   0x54, 0x2d, 0x31, 0};
  static const char fin_wait_2[] = /*  "FIN-WAIT-2",*/
  {0x46, 0x49, 0x4e, 0x2d, 0x57, 0x41, 0x49,
   0x54, 0x2d, 0x32, 0};
  static const char closing[] = /*  "CLOSING",*/
  {0x43, 0x4c, 0x4f, 0x53, 0x49,
   0x4e, 0x47, 0};
  static const char time_wait[] = /*  "TIME-WAIT,"*/
  {0x54, 0x49, 0x4d, 0x45, 0x2d, 0x57, 0x41,
   0x49, 0x54, 0};
  static const char last_ack[] = /*  "LAST-ACK"*/
  {0x4c, 0x41, 0x53, 0x54, 0x2d, 0x41, 0x43,
   0x4b, 0};
  
  static const char *states[] = {
    closed,
    syn_rcvd,
    syn_sent,
    established,
    fin_wait_1,
    fin_wait_2,
    closing,
    time_wait,
    last_ack};
  
  
  static unsigned short
  generate_tcp_stats(void *arg)
  {
    struct uip_conn *conn;
    struct httpd_state *s = (struct httpd_state *)arg;
  
    conn = &uip_conns[s->count];
    return snprintf((char *)uip_appdata, UIP_APPDATA_SIZE,
  		 "<tr><td>%d</td><td>%u.%u.%u.%u:%u</td><td>%s</td><td>%u</td><td>%u</td><td>%c %c</td></tr>\r\n",
  		 htons(conn->lport),
  		 htons(conn->ripaddr[0]) >> 8,
  		 htons(conn->ripaddr[0]) & 0xff,
  		 htons(conn->ripaddr[1]) >> 8,
  		 htons(conn->ripaddr[1]) & 0xff,
  		 htons(conn->rport),
  		 states[conn->tcpstateflags & UIP_TS_MASK],
  		 conn->nrtx,
  		 conn->timer,
  		 (uip_outstanding(conn))? '*':' ',
  		 (uip_stopped(conn))? '!':' ');
  }
  /*---------------------------------------------------------------------------*/
  static
  PT_THREAD(tcp_stats(struct httpd_state *s, char *ptr))
  {
  
    PSOCK_BEGIN(&s->sout);
    ( void ) ptr;
    for(s->count = 0; s->count < UIP_CONNS; ++s->count) {
      if((uip_conns[s->count].tcpstateflags & UIP_TS_MASK) != UIP_CLOSED) {
        PSOCK_GENERATOR_SEND(&s->sout, generate_tcp_stats, s);
      }
    }
  
    PSOCK_END(&s->sout);
  }
  /*---------------------------------------------------------------------------*/
  static unsigned short
  generate_net_stats(void *arg)
  {
    struct httpd_state *s = (struct httpd_state *)arg;
    return snprintf((char *)uip_appdata, UIP_APPDATA_SIZE,
  		  "%5u\n", ((uip_stats_t *)&uip_stat)[s->count]);
  }
  
  static
  PT_THREAD(net_stats(struct httpd_state *s, char *ptr))
  {
    PSOCK_BEGIN(&s->sout);
  
    ( void ) ptr;
  #if UIP_STATISTICS
  
    for(s->count = 0; s->count < sizeof(uip_stat) / sizeof(uip_stats_t);
        ++s->count) {
      PSOCK_GENERATOR_SEND(&s->sout, generate_net_stats, s);
    }
  
  #endif /* UIP_STATISTICS */
  
    PSOCK_END(&s->sout);
  }
  /*---------------------------------------------------------------------------*/
  
  extern void vTaskList( char *pcWriteBuffer );
  static char cCountBuf[ 32 ];
  long lRefreshCount = 0;
  static unsigned short
  generate_rtos_stats(void *arg)
  {
  	( void ) arg;
  	lRefreshCount++;
  	sprintf( cCountBuf, "<p><br>Refresh count = %d", (int)lRefreshCount );
      vTaskList( ( char * ) uip_appdata );
  	strcat( uip_appdata, cCountBuf );
  
  	return strlen( uip_appdata );
  }
  /*---------------------------------------------------------------------------*/
  
  
  static
  PT_THREAD(rtos_stats(struct httpd_state *s, char *ptr))
  {
    PSOCK_BEGIN(&s->sout);
    ( void ) ptr;
    PSOCK_GENERATOR_SEND(&s->sout, generate_rtos_stats, NULL);
    PSOCK_END(&s->sout);
  }
  /*---------------------------------------------------------------------------*/
  
  char *pcStatus;
  unsigned long ulString;
  extern portBASE_TYPE xGetLEDState( unsigned portBASE_TYPE uxLED );
  static unsigned short generate_io_state( void *arg )
  {
  	( void ) arg;
  
  	if( xGetLEDState( 3 ) == 0 )
  	{
  		pcStatus = "";
  	}
  	else
  	{
  		pcStatus = "checked";
  	}
  
  	sprintf( uip_appdata,
  		"<input type=\"checkbox\" name=\"LED0\" value=\"1\" %s>LED 4"\
  		"<p>"\
  		"<input type=\"text\" name=\"LCD\" value=\"Enter LCD text\" size=\"16\">",
  		pcStatus );
  
  	return strlen( uip_appdata );
  }
  /*---------------------------------------------------------------------------*/
  
  extern void vTaskGetRunTimeStats( char *pcWriteBuffer );
  static unsigned short
  generate_runtime_stats(void *arg)
  {
  	( void ) arg;
  	lRefreshCount++;
  	sprintf( cCountBuf, "<p><br>Refresh count = %d", (int)lRefreshCount );
      vTaskGetRunTimeStats( ( char * ) uip_appdata );
  	strcat( uip_appdata, cCountBuf );
  
  	return strlen( uip_appdata );
  }
  /*---------------------------------------------------------------------------*/
  
  
  static
  PT_THREAD(run_time(struct httpd_state *s, char *ptr))
  {
    PSOCK_BEGIN(&s->sout);
    ( void ) ptr;
    PSOCK_GENERATOR_SEND(&s->sout, generate_runtime_stats, NULL);
    PSOCK_END(&s->sout);
  }
  /*---------------------------------------------------------------------------*/
  
  
  static PT_THREAD(led_io(struct httpd_state *s, char *ptr))
  {
    PSOCK_BEGIN(&s->sout);
    ( void ) ptr;
    PSOCK_GENERATOR_SEND(&s->sout, generate_io_state, NULL);
    PSOCK_END(&s->sout);
  }
  
  /** @} */
  
  
  
  
  
  
  