/* httpd-cgi.c
* 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.
*/
#include <net/uip/uip.h>
#include <net/uip/psock.h>
#include <net/uip/httpd.h>
#include "httpd-cgi.h"
#include <stdio.h>
#include <string.h>
#define CONFIG_HTTPDCGI_FILESTATS 1
#undef CONFIG_HTTPDCGI_DCPSTATS
#define CONFIG_HTTPDCGI_NETSTATS 1
HTTPD_CGI_CALL(file, "file-stats", file_stats);
#if CONFIG_HTTPDCGI_TCPSTATS
HTTPD_CGI_CALL(tcp, "tcp-connections", tcp_stats);
#endif
HTTPD_CGI_CALL(net, "net-stats", net_stats);
#if 0 /* Revisit */
static const struct httpd_cgi_call *calls[] = { &file, &tcp, &net, NULL };
#else
static const struct httpd_cgi_call *calls[] = {
#ifdef CONFIG_HTTPDCGI_FILESTATS
&file,
#endif
#ifdef CONFIG_HTTPDCGI_DCPSTATS
&tcp,
#endif
#ifdef CONFIG_HTTPDCGI_NETSTATS
&net,
#endif
NULL
};
#endif
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};
#if CONFIG_HTTPDCGI_TCPSTATS
static const char *states[] =
{
closed,
syn_rcvd,
syn_sent,
established,
fin_wait_1,
fin_wait_2,
closing,
time_wait,
last_ack
};
#endif
static void nullfunction(struct httpd_state *s, char *ptr)
{
}
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;
}
}
#warning REVISIT -- must wait to return
return nullfunction;
}
#ifdef CONFIG_HTTPDCGI_FILESTATS
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 void file_stats(struct httpd_state *s, char *ptr)
{
psock_generator_send(&s->sout, generate_file_stats, strchr(ptr, ' ') + 1);
}
#endif
#if CONFIG_HTTPDCGI_TCPSTATS
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 void tcp_stats(struct httpd_state *s, char *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);
}
}
}
#endif
#ifdef CONFIG_HTTPDCGI_NETSTATS
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 void net_stats(struct httpd_state *s, char *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 */
}
#endif
