Contiki-NG

/* * Copyright (c) 2017, RISE SICS * 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. Neither the name of the Institute nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``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 INSTITUTE OR CONTRIBUTORS 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 Contiki operating system. * */ #include "contiki.h" #include "net/routing/routing.h" #include #include /*---------------------------------------------------------------------------*/ static const char *TOP = "Contiki-NG\n"; static const char *BOTTOM = "\n"; #if BUF_USES_STACK static char *bufptr, *bufend; #define ADD(...) do { \ bufptr += snprintf(bufptr, bufend - bufptr, __VA_ARGS__); \ } while(0) #else static char buf[256]; static int blen; #define ADD(...) do { \ blen += snprintf(&buf[blen], sizeof(buf) - blen, __VA_ARGS__); \ } while(0) #endif /* Use simple webserver with only one page for minimum footprint. * Multiple connections can result in interleaved tcp segments since * a single static buffer is used for all segments. */ #include "httpd-simple.h" /* The internal webserver can provide additional information if * enough program flash is available. */ #define WEBSERVER_CONF_LOADTIME 0 #define WEBSERVER_CONF_FILESTATS 0 #define WEBSERVER_CONF_NEIGHBOR_STATUS 0 /* Adding links requires a larger RAM buffer. To avoid static allocation * the stack can be used for formatting; however tcp retransmissions * and multiple connections can result in garbled segments. * TODO:use PSOCk_GENERATOR_SEND and tcp state storage to fix this. */ #define WEBSERVER_CONF_ROUTE_LINKS 0 #if WEBSERVER_CONF_ROUTE_LINKS #define BUF_USES_STACK 1 #endif /*---------------------------------------------------------------------------*/ static void ipaddr_add(const uip_ipaddr_t *addr) { uint16_t a; int i, f; for(i = 0, f = 0; i < sizeof(uip_ipaddr_t); i += 2) { a = (addr->u8[i] << 8) + addr->u8[i + 1]; if(a == 0 && f >= 0) { if(f++ == 0) { ADD("::"); } } else { if(f > 0) { f = -1; } else if(i > 0) { ADD(":"); } ADD("%x", a); } } } /*---------------------------------------------------------------------------*/ static PT_THREAD(generate_routes(struct httpd_state *s)) { static uip_ds6_route_t *r; #if RPL_WITH_NON_STORING static rpl_ns_node_t *link; #endif /* RPL_WITH_NON_STORING */ static uip_ds6_nbr_t *nbr; #if BUF_USES_STACK char buf[256]; #endif #if WEBSERVER_CONF_LOADTIME static clock_time_t numticks; numticks = clock_time(); #endif PSOCK_BEGIN(&s->sout); SEND_STRING(&s->sout, TOP); #if BUF_USES_STACK bufptr = buf; bufend = bufptr + sizeof(buf); #else blen = 0; #endif ADD("Neighbors

");

  for(nbr = nbr_table_head(ds6_neighbors);
      nbr != NULL;
      nbr = nbr_table_next(ds6_neighbors, nbr)) {

#if WEBSERVER_CONF_NEIGHBOR_STATUS
#if BUF_USES_STACK
    { char *j = bufptr + 25;
      ipaddr_add(&nbr->ipaddr);
      while(bufptr < j) ADD(" ");
      switch(nbr->state) {
      case NBR_INCOMPLETE: ADD(" INCOMPLETE");
        break;
      case NBR_REACHABLE: ADD(" REACHABLE");
        break;
      case NBR_STALE: ADD(" STALE");
        break;
      case NBR_DELAY: ADD(" DELAY");
        break;
      case NBR_PROBE: ADD(" NBR_PROBE");
        break;
      }
    }
#else
    { uint8_t j = blen + 25;
      ipaddr_add(&nbr->ipaddr);
      while(blen < j) ADD(" ");
      switch(nbr->state) {
      case NBR_INCOMPLETE: ADD(" INCOMPLETE");
        break;
      case NBR_REACHABLE: ADD(" REACHABLE");
        break;
      case NBR_STALE: ADD(" STALE");
        break;
      case NBR_DELAY: ADD(" DELAY");
        break;
      case NBR_PROBE: ADD(" NBR_PROBE");
        break;
      }
    }
#endif
#else
    ipaddr_add(&nbr->ipaddr);
#endif

    ADD("\n");
#if BUF_USES_STACK
    if(bufptr > bufend - 45) {
      SEND_STRING(&s->sout, buf);
      bufptr = buf;
      bufend = bufptr + sizeof(buf);
    }
#else
    if(blen > sizeof(buf) - 45) {
      SEND_STRING(&s->sout, buf);
      blen = 0;
    }
#endif
  }
  ADD("

Routes

\n");
  SEND_STRING(&s->sout, buf);
#if BUF_USES_STACK
  bufptr = buf;
  bufend = bufptr + sizeof(buf);
#else
  blen = 0;
#endif

  for(r = uip_ds6_route_head(); r != NULL; r = uip_ds6_route_next(r)) {

#if BUF_USES_STACK
#if WEBSERVER_CONF_ROUTE_LINKS
    ADD("ipaddr);
    ADD("]/status.shtml>");
    ipaddr_add(&r->ipaddr);
    ADD("");
#else
    ipaddr_add(&r->ipaddr);
#endif
#else
#if WEBSERVER_CONF_ROUTE_LINKS
    ADD("ipaddr);
    ADD("]/status.shtml>");
    SEND_STRING(&s->sout, buf);
    blen = 0;
    ipaddr_add(&r->ipaddr);
    ADD("");
#else
    ipaddr_add(&r->ipaddr);
#endif
#endif
    ADD("/%u (via ", r->length);
    ipaddr_add(uip_ds6_route_nexthop(r));
    if(1 || (r->state.lifetime < 600)) {
      ADD(") %lus\n", (unsigned long)r->state.lifetime);
    } else {
      ADD(")\n");
    }
    SEND_STRING(&s->sout, buf);
#if BUF_USES_STACK
    bufptr = buf;
    bufend = bufptr + sizeof(buf);
#else
    blen = 0;
#endif
  }
  ADD("

"); #if RPL_WITH_NON_STORING ADD("Links

\n");
  SEND_STRING(&s->sout, buf);
#if BUF_USES_STACK
  bufptr = buf;
  bufend = bufptr + sizeof(buf);
#else
  blen = 0;
#endif
  for(link = rpl_ns_node_head(); link != NULL; link = rpl_ns_node_next(link)) {
    if(link->parent != NULL) {
      uip_ipaddr_t child_ipaddr;
      uip_ipaddr_t parent_ipaddr;

      rpl_ns_get_node_global_addr(&child_ipaddr, link);
      rpl_ns_get_node_global_addr(&parent_ipaddr, link->parent);

#if BUF_USES_STACK
#if WEBSERVER_CONF_ROUTE_LINKS
      ADD("");
      ipaddr_add(&child_ipaddr);
      ADD("");
#else
      ipaddr_add(&child_ipaddr);
#endif
#else
#if WEBSERVER_CONF_ROUTE_LINKS
      ADD("");
      SEND_STRING(&s->sout, buf);
      blen = 0;
      ipaddr_add(&child_ipaddr);
      ADD("");
#else
      ipaddr_add(&child_ipaddr);
#endif
#endif

      ADD(" (parent: ");
      ipaddr_add(&parent_ipaddr);
      if(1 || (link->lifetime < 600)) {
        ADD(") %us\n", (unsigned int)link->lifetime);
      } else {
        ADD(")\n");
      }
      SEND_STRING(&s->sout, buf);
#if BUF_USES_STACK
      bufptr = buf;
      bufend = bufptr + sizeof(buf);
#else
      blen = 0;
#endif
    }
  }
  ADD("

"); #endif /* RPL_WITH_NON_STORING */ #if WEBSERVER_CONF_FILESTATS static uint16_t numtimes; ADD("
This page sent %u times", ++numtimes); #endif #if WEBSERVER_CONF_LOADTIME numticks = clock_time() - numticks + 1; ADD(" (%u.%02u sec)", numticks / CLOCK_SECOND, (100 * (numticks % CLOCK_SECOND)) / CLOCK_SECOND)); #endif SEND_STRING(&s->sout, buf); SEND_STRING(&s->sout, BOTTOM); PSOCK_END(&s->sout); } /*---------------------------------------------------------------------------*/ PROCESS(webserver_nogui_process, "Web server"); PROCESS_THREAD(webserver_nogui_process, ev, data) { PROCESS_BEGIN(); httpd_init(); while(1) { PROCESS_WAIT_EVENT_UNTIL(ev == tcpip_event); httpd_appcall(data); } PROCESS_END(); } /*---------------------------------------------------------------------------*/ httpd_simple_script_t httpd_simple_get_script(const char *name) { return generate_routes; } /*---------------------------------------------------------------------------*/