331 lines
10 KiB
C
331 lines
10 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 1.1 2008/10/14 10:14:13 julienabeille 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 <stdio.h>
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#include <string.h>
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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 "sensors.h"
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static struct httpd_cgi_call *calls = NULL;
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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,
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0x53, 0x48, 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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{0x4e, 0x4f, 0x4e, 0x45, 0};
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static const char running[] = /* "RUNNING"*/
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{0x52, 0x55, 0x4e, 0x4e, 0x49, 0x4e, 0x47,
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0};
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static const char called[] = /* "CALLED"*/
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{0x43, 0x41, 0x4c, 0x4c, 0x45, 0x44, 0};
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static const char file_name[] = /* "file-stats"*/
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{0x66, 0x69, 0x6c, 0x65, 0x2d, 0x73, 0x74,
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0x61, 0x74, 0x73, 0};
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static const char tcp_name[] = /* "tcp-connections"*/
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{0x74, 0x63, 0x70, 0x2d, 0x63, 0x6f, 0x6e,
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0x6e, 0x65, 0x63, 0x74, 0x69, 0x6f, 0x6e,
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0x73, 0};
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static const char proc_name[] = /* "processes"*/
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{0x70, 0x72, 0x6f, 0x63, 0x65, 0x73, 0x73,
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0x65, 0x73, 0};
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static const char sensor_name[] = "sensors";
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char sensor_temperature[12];
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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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running,
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called};
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uint8_t sprint_ip6(uip_ip6addr_t addr, char * result);
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void
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web_set_temp(char *s)
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{
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strcpy(sensor_temperature, s);
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}
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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 snprintf((char *)uip_appdata, uip_mss(), "%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, (void *) (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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uint16_t numprinted;
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conn = &uip_conns[s->u.count];
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numprinted = snprintf((char *)uip_appdata, uip_mss(),
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"<tr align=\"center\"><td>%d</td><td>",
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htons(conn->lport));
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numprinted += sprint_ip6(conn->ripaddr, uip_appdata + numprinted);
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numprinted += snprintf((char *)uip_appdata + numprinted, uip_mss() - numprinted,
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"-%u</td><td>%s</td><td>%u</td><td>%u</td><td>%c %c</td></tr>\r\n",
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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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return numprinted;
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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->u.count = 0; s->u.count < UIP_CONNS; ++s->u.count) {
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if((uip_conns[s->u.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 snprintf((char *)uip_appdata, uip_mss(),
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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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*((char **)&(((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->u.ptr = PROCESS_LIST(); s->u.ptr != NULL; s->u.ptr = ((struct process *)s->u.ptr)->next) {
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PSOCK_GENERATOR_SEND(&s->sout, make_processes, s->u.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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static unsigned short
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generate_sensor_readings(void *arg)
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{
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return snprintf((char *)uip_appdata, uip_mss(), "<em>Temperature:</em> %s\n", sensor_temperature);
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}
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/*---------------------------------------------------------------------------*/
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static
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PT_THREAD(sensor_readings(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_sensor_readings, s);
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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_name, file_stats);
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HTTPD_CGI_CALL(tcp, tcp_name, tcp_stats);
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HTTPD_CGI_CALL(proc, proc_name, processes);
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HTTPD_CGI_CALL(sensors, sensor_name, sensor_readings);
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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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httpd_cgi_add(&sensors);
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}
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/*---------------------------------------------------------------------------*/
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uint8_t sprint_ip6(uip_ip6addr_t addr, char * result)
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{
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unsigned char zerocnt = 0;
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unsigned char numprinted = 0;
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char * starting = result;
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unsigned char i = 0;
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while (numprinted < 8)
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{
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//Address is zero, have we used our ability to
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//replace a bunch with : yet?
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if ((addr.u16[i] == 0) && (zerocnt == 0))
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{
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//How mant zeros?
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zerocnt = 0;
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while(addr.u16[zerocnt + i] == 0)
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zerocnt++;
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//just one, don't waste our zeros...
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if (zerocnt == 1)
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{
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*result++ = '0';
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numprinted++;
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break;
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}
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//Cool - can replace a bunch of zeros
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i += zerocnt;
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numprinted += zerocnt;
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}
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//Normal address, just print it
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else
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{
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result += sprintf(result, "%x", (unsigned int)(ntohs(addr.u16[i])));
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i++;
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numprinted++;
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}
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//Don't print : on last one
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if (numprinted != 8)
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*result++ = ':';
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}
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return (result - starting);
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}
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