135 lines
4.1 KiB
C
135 lines
4.1 KiB
C
/*
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* Copyright (c) 2011, Swedish Institute of Computer Science
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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. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/**
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* \file
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* A small command-line interface for the querying remote database systems.
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* \author
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* Nicolas Tsiftes <nvt@sics.se>
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*/
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#include <stdio.h>
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#include <string.h>
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#include "contiki.h"
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#include "dev/serial-line.h"
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#include "net/rime/rime.h"
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#include "net/rime/mesh.h"
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#include "antelope.h"
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/*---------------------------------------------------------------------------*/
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#define MAX_QUERY_SIZE 100
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#define NETDB_CHANNEL 70
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#ifndef SERVER_ID
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#define SERVER_ID 4
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#endif
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/*---------------------------------------------------------------------------*/
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PROCESS(netdb_process, "NetDB");
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AUTOSTART_PROCESSES(&netdb_process);
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static unsigned server_id = SERVER_ID;
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static struct mesh_conn mesh;
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/*---------------------------------------------------------------------------*/
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PROCESS(shell_process, "Shell Process");
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PROCESS_THREAD(shell_process, ev, data)
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{
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rimeaddr_t addr;
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PROCESS_BEGIN();
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printf("NetDB client\n");
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for(;;) {
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PROCESS_WAIT_EVENT_UNTIL(ev == serial_line_event_message && data != NULL);
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if(strncmp(data, "server ", 7) == 0) {
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server_id = atoi((char *)data + 7);
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} else {
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printf("%lu Transmitting query \"%s\" to node %u\n", clock_time(), (char *)data, server_id);
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packetbuf_copyfrom(data, strlen(data));
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addr.u8[0] = server_id;
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addr.u8[1] = 0;
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packetbuf_set_attr(PACKETBUF_ATTR_PACKET_TYPE,
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PACKETBUF_ATTR_PACKET_TYPE_STREAM);
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mesh_send(&mesh, &addr);
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}
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}
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PROCESS_END();
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}
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/*---------------------------------------------------------------------------*/
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static void
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sent(struct mesh_conn *c)
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{
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}
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static void
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timedout(struct mesh_conn *c)
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{
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printf("Failed to send packet: time out\n");
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}
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static void
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received(struct mesh_conn *c, const rimeaddr_t *from, uint8_t hops)
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{
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char *data;
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unsigned len;
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static char reply[MAX_QUERY_SIZE + 1];
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data = (char *)packetbuf_dataptr();
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len = packetbuf_datalen();
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if(len > MAX_QUERY_SIZE) {
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printf("Too long query: %d bytes\n", len);
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return;
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}
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memcpy(reply, data, len);
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reply[len] = '\0';
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printf("%lu Reply received from %d.%d (%d hops): %s",
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clock_time(), from->u8[0], from->u8[1], (int)hops, reply);
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}
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static const struct mesh_callbacks callbacks = {received, sent, timedout};
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(netdb_process, ev, data)
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{
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PROCESS_EXITHANDLER(mesh_close(&mesh));
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PROCESS_BEGIN();
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mesh_open(&mesh, NETDB_CHANNEL, &callbacks);
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process_start(&shell_process, NULL);
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PROCESS_END();
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}
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