247 lines
7.3 KiB
C
247 lines
7.3 KiB
C
/*
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* Copyright (c) 2001, Adam Dunkels.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This file is part of the uIP TCP/IP stack.
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*
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* $Id: httpd-cgi.c,v 1.5 2007/04/14 13:48:33 oliverschmidt Exp $
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*
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*/
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/*
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* This file includes functions that are called by the web server
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* scripts. The functions takes no argument, and the return value is
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* interpreted as follows. A zero means that the function did not
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* complete and should be invoked for the next packet as well. A
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* non-zero value indicates that the function has completed and that
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* the web server should move along to the next script line.
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*
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*/
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#include "contiki-net.h"
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#include "httpd.h"
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#include "httpd-cgi.h"
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#include "httpd-fs.h"
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#include "lib/petsciiconv.h"
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#include <stdio.h>
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#include <string.h>
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static struct httpd_cgi_call *calls = NULL;
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/*struct cgifunction {
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char *name;
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httpd_cgifunction function;
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};
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static struct cgifunction cgitab[] = {
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{"file-stats", file_stats},
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{"tcp-connections", tcp_stats},
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{"processes", processes},
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{NULL, NULL}
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};*/
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static const char closed[] = /* "CLOSED",*/
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{0x43, 0x4c, 0x4f, 0x53, 0x45, 0x44, 0};
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static const char syn_rcvd[] = /* "SYN-RCVD",*/
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{0x53, 0x59, 0x4e, 0x2d, 0x52, 0x43, 0x56,
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0x44, 0};
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static const char syn_sent[] = /* "SYN-SENT",*/
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{0x53, 0x59, 0x4e, 0x2d, 0x53, 0x45, 0x4e,
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0x54, 0};
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static const char established[] = /* "ESTABLISHED",*/
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{0x45, 0x53, 0x54, 0x41, 0x42, 0x4c, 0x49, 0x53, 0x48,
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0x45, 0x44, 0};
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static const char fin_wait_1[] = /* "FIN-WAIT-1",*/
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{0x46, 0x49, 0x4e, 0x2d, 0x57, 0x41, 0x49,
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0x54, 0x2d, 0x31, 0};
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static const char fin_wait_2[] = /* "FIN-WAIT-2",*/
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{0x46, 0x49, 0x4e, 0x2d, 0x57, 0x41, 0x49,
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0x54, 0x2d, 0x32, 0};
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static const char closing[] = /* "CLOSING",*/
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{0x43, 0x4c, 0x4f, 0x53, 0x49,
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0x4e, 0x47, 0};
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static const char time_wait[] = /* "TIME-WAIT,"*/
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{0x54, 0x49, 0x4d, 0x45, 0x2d, 0x57, 0x41,
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0x49, 0x54, 0};
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static const char last_ack[] = /* "LAST-ACK"*/
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{0x4c, 0x41, 0x53, 0x54, 0x2d, 0x41, 0x43,
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0x4b, 0};
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static const char none[] = "NONE";
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static const char init[] = "INIT";
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static const char running[] = "RUNNING";
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static const char needs_poll[] = "NEEDS POLL";
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static const char *states[] = {
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closed,
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syn_rcvd,
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syn_sent,
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established,
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fin_wait_1,
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fin_wait_2,
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closing,
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time_wait,
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last_ack,
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none,
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init,
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running,
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needs_poll};
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/*---------------------------------------------------------------------------*/
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static
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PT_THREAD(nullfunction(struct httpd_state *s, char *ptr))
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{
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PSOCK_BEGIN(&s->sout);
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PSOCK_END(&s->sout);
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}
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/*---------------------------------------------------------------------------*/
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httpd_cgifunction
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httpd_cgi(char *name)
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{
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struct httpd_cgi_call *f;
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/* Find the matching name in the table, return the function. */
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for(f = calls; f != NULL; f = f->next) {
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if(strncmp(f->name, name, strlen(f->name)) == 0) {
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return f->function;
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}
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}
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return nullfunction;
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}
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/*---------------------------------------------------------------------------*/
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static unsigned short
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generate_file_stats(void *arg)
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{
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char *f = (char *)arg;
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return sprintf((char *)uip_appdata, "%5u", httpd_fs_count(f));
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}
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/*---------------------------------------------------------------------------*/
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static
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PT_THREAD(file_stats(struct httpd_state *s, char *ptr))
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{
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PSOCK_BEGIN(&s->sout);
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PSOCK_GENERATOR_SEND(&s->sout, generate_file_stats, strchr(ptr, ' ') + 1);
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PSOCK_END(&s->sout);
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}
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/*---------------------------------------------------------------------------*/
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static unsigned short
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make_tcp_stats(void *arg)
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{
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struct uip_conn *conn;
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struct httpd_state *s = (struct httpd_state *)arg;
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conn = &uip_conns[s->count];
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return sprintf((char *)uip_appdata,
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"<tr align=\"center\"><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",
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htons(conn->lport),
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conn->ripaddr.u8[0],
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conn->ripaddr.u8[1],
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conn->ripaddr.u8[2],
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conn->ripaddr.u8[3],
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htons(conn->rport),
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states[conn->tcpstateflags & UIP_TS_MASK],
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conn->nrtx,
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conn->timer,
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(uip_outstanding(conn))? '*':' ',
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(uip_stopped(conn))? '!':' ');
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}
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/*---------------------------------------------------------------------------*/
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static
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PT_THREAD(tcp_stats(struct httpd_state *s, char *ptr))
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{
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PSOCK_BEGIN(&s->sout);
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for(s->count = 0; s->count < UIP_CONNS; ++s->count) {
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if((uip_conns[s->count].tcpstateflags & UIP_TS_MASK) != UIP_CLOSED) {
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PSOCK_GENERATOR_SEND(&s->sout, make_tcp_stats, s);
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}
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}
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PSOCK_END(&s->sout);
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}
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/*---------------------------------------------------------------------------*/
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static unsigned short
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make_processes(void *p)
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{
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char name[40];
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strncpy(name, ((struct process *)p)->name, 40);
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petsciiconv_toascii(name, 40);
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return sprintf((char *)uip_appdata,
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"<tr align=\"center\"><td>%p</td><td>%s</td><td>%p</td><td>%s</td></tr>\r\n",
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p, name,
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((struct process *)p)->thread,
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states[9 + ((struct process *)p)->state]);
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}
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/*---------------------------------------------------------------------------*/
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static
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PT_THREAD(processes(struct httpd_state *s, char *ptr))
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{
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PSOCK_BEGIN(&s->sout);
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for(s->ptr = PROCESS_LIST(); s->ptr != NULL; s->ptr = ((struct process *)s->ptr)->next) {
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PSOCK_GENERATOR_SEND(&s->sout, make_processes, s->ptr);
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}
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PSOCK_END(&s->sout);
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}
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/*---------------------------------------------------------------------------*/
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void
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httpd_cgi_add(struct httpd_cgi_call *c)
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{
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struct httpd_cgi_call *l;
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c->next = NULL;
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if(calls == NULL) {
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calls = c;
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} else {
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for(l = calls; l->next != NULL; l = l->next);
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l->next = c;
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}
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}
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/*---------------------------------------------------------------------------*/
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HTTPD_CGI_CALL(file, "file-stats", file_stats);
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HTTPD_CGI_CALL(tcp, "tcp-connections", tcp_stats);
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HTTPD_CGI_CALL(proc, "processes", processes);
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void
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httpd_cgi_init(void)
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{
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httpd_cgi_add(&file);
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httpd_cgi_add(&tcp);
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httpd_cgi_add(&proc);
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}
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/*---------------------------------------------------------------------------*/
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