resource/csdk/stack/src/occlientcb.c

   1 //******************************************************************
   2 //
   3 // Copyright 2014 Intel Mobile Communications GmbH All Rights Reserved.
   4 //
   5 //-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
   6 //
   7 // Licensed under the Apache License, Version 2.0 (the "License");
   8 // you may not use this file except in compliance with the License.
   9 // You may obtain a copy of the License at
  10 //
  11 //      http://www.apache.org/licenses/LICENSE-2.0
  12 //
  13 // Unless required by applicable law or agreed to in writing, software
  14 // distributed under the License is distributed on an "AS IS" BASIS,
  15 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16 // See the License for the specific language governing permissions and
  17 // limitations under the License.
  18 //
  19 //-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  20
  21
  22 #include "occlientcb.h"
  23 #include "occoap.h"
  24 #include "utlist.h"
  25 #include "logger.h"
  26 #include "ocmalloc.h"
  27 #include <string.h>
  28
  29 #ifdef CA_INT
  30     #include "cacommon.h"
  31     #include "cainterface.h"
  32 #endif
  33
  34 /// Module Name
  35 #define TAG PCF("occlientcb")
  36
  37 #ifdef CA_INT
  38 // TODO-CA: This has been defined in CA layer as well, but is not exposed externally.
  39 // Need to expose it from CA and remove the definition below.
  40 #define CA_MAX_TOKEN_LEN   (8)
  41 #endif //CA_INT
  42
  43 struct ClientCB *cbList = NULL;
  44 OCMulticastNode * mcPresenceNodes = NULL;
  45
  46 OCStackResult
  47 #ifdef CA_INT
  48 AddClientCB (ClientCB** clientCB, OCCallbackData* cbData,
  49              CAToken_t * token, OCDoHandle *handle, OCMethod method,
  50              unsigned char * requestUri, unsigned char * resourceTypeName)
  51 #else // CA_INT
  52 AddClientCB (ClientCB** clientCB, OCCallbackData* cbData,
  53              OCCoAPToken * token, OCDoHandle *handle, OCMethod method,
  54              unsigned char * requestUri, unsigned char * resourceTypeName)
  55 #endif // CA_INT
  56 {
  57
  58     ClientCB *cbNode = NULL;
  59
  60     #ifdef WITH_PRESENCE
  61     if(method == OC_REST_PRESENCE)
  62     {   // Retrieve the presence callback structure for this specific requestUri.
  63         cbNode = GetClientCB(NULL, NULL, requestUri);
  64     }
  65     #endif // WITH_PRESENCE
  66
  67     if(!cbNode)// If it does not already exist, create new node.
  68     {
  69         cbNode = (ClientCB*) OCMalloc(sizeof(ClientCB));
  70         if(!cbNode)
  71         {
  72             *clientCB = NULL;
  73             goto exit;
  74         }
  75         else
  76         {
  77             cbNode->callBack = cbData->cb;
  78             cbNode->context = cbData->context;
  79             cbNode->deleteCallback = cbData->cd;
  80             #ifdef CA_INT
  81             cbNode->token = (CAToken_t *)OCMalloc(CA_MAX_TOKEN_LEN);
  82             memcpy(&(cbNode->token), token, CA_MAX_TOKEN_LEN);
  83             #else // CA_INT
  84             memcpy(&(cbNode->token), token, sizeof(OCCoAPToken));
  85             #endif // CA_INT
  86             cbNode->handle = *handle;
  87             cbNode->method = method;
  88             cbNode->sequenceNumber = 0;
  89             #ifdef WITH_PRESENCE
  90             cbNode->presence = NULL;
  91             cbNode->filterResourceType = NULL;
  92             #endif // WITH_PRESENCE
  93             cbNode->requestUri = requestUri;
  94             LL_APPEND(cbList, cbNode);
  95             *clientCB = cbNode;
  96         }
  97     }
  98     else
  99     {
 100         // Ensure that the handle the SDK hands back up to the application layer for the
 101         // OCDoResource call matches the found ClientCB Node.
 102         *clientCB = cbNode;
 103         OCFree(requestUri);
 104         OCFree(*handle);
 105         *handle = cbNode->handle;
 106     }
 107
 108     #ifdef WITH_PRESENCE
 109     if(method == OC_REST_PRESENCE && resourceTypeName)
 110     {   // Amend the found or created node by adding a new resourceType to it.
 111         return InsertResourceTypeFilter(cbNode, (const char *)resourceTypeName);
 112     }
 113     #endif
 114
 115     return OC_STACK_OK;
 116
 117     exit:
 118         return OC_STACK_NO_MEMORY;
 119 }
 120
 121 void DeleteClientCB(ClientCB * cbNode) {
 122     if(cbNode) {
 123         LL_DELETE(cbList, cbNode);
 124         OC_LOG(INFO, TAG, PCF("deleting tokens"));
 125         #ifdef CA_INT
 126         CADestroyToken (cbNode->token);
 127         #else
 128         OC_LOG_BUFFER(INFO, TAG, cbNode->token.token, cbNode->token.tokenLength);
 129         #endif // CA_INT
 130         OCFree(cbNode->handle);
 131         OCFree(cbNode->requestUri);
 132         if(cbNode->deleteCallback)
 133         {
 134             cbNode->deleteCallback(cbNode->context);
 135         }
 136
 137         #ifdef WITH_PRESENCE
 138         if(cbNode->presence) {
 139             OCFree(cbNode->presence->timeOut);
 140             OCFree(cbNode->presence);
 141         }
 142         if(cbNode->method == OC_REST_PRESENCE)
 143         {
 144             OCResourceType * pointer = cbNode->filterResourceType;
 145             OCResourceType * next = NULL;
 146             while(pointer)
 147             {
 148                 next = pointer->next;
 149                 OCFree(pointer->resourcetypename);
 150                 OCFree(pointer);
 151                 pointer = next;
 152             }
 153         }
 154         #endif // WITH_PRESENCE
 155         OCFree(cbNode);
 156         cbNode = NULL;
 157     }
 158 }
 159
 160 #ifdef CA_INT
 161 ClientCB* GetClientCB(CAToken_t * token, OCDoHandle handle, const unsigned char * requestUri)
 162 #else // CA_INT
 163 ClientCB* GetClientCB(OCCoAPToken * token, OCDoHandle handle, const unsigned char * requestUri)
 164 #endif // CA_INT
 165 {
 166     ClientCB* out = NULL;
 167     if(token) {
 168         LL_FOREACH(cbList, out) {
 169             OC_LOG(INFO, TAG, PCF("comparing tokens"));
 170             #ifdef CA_INT
 171             if(memcmp(out->token, token, CA_MAX_TOKEN_LEN) == 0)
 172             {
 173                 return out;
 174             }
 175             #else // CA_INT
 176             OC_LOG_BUFFER(INFO, TAG, token->token, token->tokenLength);
 177             OC_LOG_BUFFER(INFO, TAG, out->token.token, out->token.tokenLength);
 178             if((out->token.tokenLength == token->tokenLength) &&
 179                 (memcmp(out->token.token, token->token, token->tokenLength) == 0) ) {
 180                 return out;
 181             }
 182             #endif // CA_INT
 183         }
 184     }
 185     else if(handle) {
 186         LL_FOREACH(cbList, out) {
 187             if(out->handle == handle) {
 188                 return out;
 189             }
 190         }
 191     }
 192     else if(requestUri) {
 193         LL_FOREACH(cbList, out) {
 194             if(out->requestUri && strcmp((char *)out->requestUri, (char *)requestUri) == 0) {
 195                 return out;
 196             }
 197         }
 198     }
 199     OC_LOG(INFO, TAG, PCF("Callback Not found !!"));
 200     return NULL;
 201 }
 202
 203 #ifdef WITH_PRESENCE
 204 OCStackResult InsertResourceTypeFilter(ClientCB * cbNode, const char * resourceTypeName)
 205 {
 206     OCResourceType * newResourceType = NULL;
 207     if(cbNode && resourceTypeName)
 208     {
 209         // Form a new resourceType member.
 210         newResourceType = (OCResourceType *) OCMalloc(sizeof(OCResourceType));
 211         if(!newResourceType)
 212         {
 213             return OC_STACK_NO_MEMORY;
 214         }
 215
 216         newResourceType->next = NULL;
 217         newResourceType->resourcetypename = (char *) resourceTypeName;
 218
 219         LL_APPEND(cbNode->filterResourceType, newResourceType);
 220         return OC_STACK_OK;
 221     }
 222     return OC_STACK_ERROR;
 223 }
 224 #endif // WITH_PRESENCE
 225
 226 void DeleteClientCBList() {
 227     ClientCB* out;
 228     ClientCB* tmp;
 229     LL_FOREACH_SAFE(cbList, out, tmp) {
 230         DeleteClientCB(out);
 231     }
 232     cbList = NULL;
 233 }
 234
 235 void FindAndDeleteClientCB(ClientCB * cbNode) {
 236     ClientCB* tmp;
 237     if(cbNode)
 238     {
 239         LL_FOREACH(cbList, tmp)
 240         {
 241             if (cbNode == tmp)
 242             {
 243                 DeleteClientCB(tmp);
 244                 break;
 245             }
 246         }
 247     }
 248 }
 249
 250 OCStackResult AddMCPresenceNode(OCMulticastNode** outnode, unsigned char* uri, uint32_t nonce)
 251 {
 252     OCMulticastNode *node;
 253
 254     node = (OCMulticastNode*) OCMalloc(sizeof(OCMulticastNode));
 255
 256     if (node) {
 257         node->nonce = nonce;
 258         node->uri = uri;
 259         LL_APPEND(mcPresenceNodes, node);
 260         *outnode = node;
 261         return OC_STACK_OK;
 262     }
 263     *outnode = NULL;
 264     return OC_STACK_NO_MEMORY;
 265 }
 266
 267 OCMulticastNode* GetMCPresenceNode(const unsigned char * uri) {
 268     OCMulticastNode* out = NULL;
 269
 270     if(uri) {
 271         LL_FOREACH(mcPresenceNodes, out) {
 272             if(out->uri && strcmp((char *)out->uri, (char *)uri) == 0) {
 273                 return out;
 274             }
 275         }
 276     }
 277     OC_LOG(INFO, TAG, PCF("MulticastNode Not found !!"));
 278     return NULL;
 279 }