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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 | /* * Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich * 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. */ /** * \file * ETSI Plugtest resource * \author * Matthias Kovatsch <kovatsch@inf.ethz.ch> */ #include <string.h> #include "rest-engine.h" #include "er-coap.h" #include "er-coap-observe.h" #include "er-plugtest.h" static void res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset); static void res_put_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset); static void res_delete_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset); static void res_periodic_handler(void); PERIODIC_RESOURCE(res_plugtest_obs, "title=\"Observable resource which changes every 5 seconds\";obs", res_get_handler, NULL, res_put_handler, res_delete_handler, 5 * CLOCK_SECOND, res_periodic_handler); static int32_t obs_counter = 0; static char obs_content[MAX_PLUGFEST_BODY]; static size_t obs_content_len = 0; static unsigned int obs_format = 0; static char obs_status = 0; static void obs_purge_list() { PRINTF("### SERVER ACTION ### Purging obs list"); coap_remove_observer_by_uri(NULL, 0, res_plugtest_obs.url); } static void res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset) { /* Keep server log clean from ticking events */ if(request != NULL) { PRINTF("/obs GET\n"); } REST.set_header_content_type(response, obs_format); REST.set_header_max_age(response, 5); if(obs_content_len) { REST.set_header_content_type(response, obs_format); REST.set_response_payload(response, obs_content, obs_content_len); } else { REST.set_header_content_type(response, REST.type.TEXT_PLAIN); REST.set_response_payload(response, obs_content, snprintf(obs_content, MAX_PLUGFEST_PAYLOAD, "TICK %lu", obs_counter)); } /* A post_handler that handles subscriptions will be called for periodic resources by the REST framework. */ } static void res_put_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset) { uint8_t *incoming = NULL; unsigned int ct = -1; REST.get_header_content_type(request, &ct); PRINTF("/obs PUT\n"); if(ct != obs_format) { obs_status = 1; obs_format = ct; } else { obs_content_len = REST.get_request_payload(request, (const uint8_t **)&incoming); memcpy(obs_content, incoming, obs_content_len); res_periodic_handler(); } REST.set_response_status(response, REST.status.CHANGED); } static void res_delete_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset) { PRINTF("/obs DELETE\n"); obs_status = 2; REST.set_response_status(response, REST.status.DELETED); } /* * Additionally, a handler function named [resource name]_handler must be implemented for each PERIODIC_RESOURCE. * It will be called by the REST manager process with the defined period. */ static void res_periodic_handler() { ++obs_counter; /* PRINTF("TICK %u for /%s\n", obs_counter, r->url); */ if(obs_status == 1) { /* Notify the registered observers with the given message type, observe option, and payload. */ REST.notify_subscribers(&res_plugtest_obs); PRINTF("######### sending 5.00\n"); obs_purge_list(); } else if(obs_status == 2) { /* Notify the registered observers with the given message type, observe option, and payload. */ REST.notify_subscribers(&res_plugtest_obs); obs_purge_list(); obs_counter = 0; obs_content_len = 0; } else { /* Notify the registered observers with the given message type, observe option, and payload. */ REST.notify_subscribers(&res_plugtest_obs); } obs_status = 0; } |