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      1 /* Copyright (c) 2011-2014, The Linux Foundation. All rights reserved.
      2  *
      3  * Redistribution and use in source and binary forms, with or without
      4  * modification, are permitted provided that the following conditions are
      5  * met:
      6  *     * Redistributions of source code must retain the above copyright
      7  *       notice, this list of conditions and the following disclaimer.
      8  *     * Redistributions in binary form must reproduce the above
      9  *       copyright notice, this list of conditions and the following
     10  *       disclaimer in the documentation and/or other materials provided
     11  *       with the distribution.
     12  *     * Neither the name of The Linux Foundation, nor the names of its
     13  *       contributors may be used to endorse or promote products derived
     14  *       from this software without specific prior written permission.
     15  *
     16  * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
     17  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     18  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
     19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
     20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
     23  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     24  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
     25  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
     26  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  *
     28  */
     29 #define LOG_NDDEBUG 0
     30 #define LOG_TAG "LocSvc_CtxBase"
     31 
     32 #include <dlfcn.h>
     33 #include <cutils/sched_policy.h>
     34 #include <unistd.h>
     35 #include <ContextBase.h>
     36 #include <msg_q.h>
     37 #include <loc_target.h>
     38 #include <log_util.h>
     39 #include <loc_log.h>
     40 
     41 namespace loc_core {
     42 
     43 LBSProxyBase* ContextBase::getLBSProxy(const char* libName)
     44 {
     45     LBSProxyBase* proxy = NULL;
     46     LOC_LOGD("%s:%d]: getLBSProxy libname: %s\n", __func__, __LINE__, libName);
     47     dlerror();
     48     void* lib = dlopen(libName, RTLD_NOW);
     49 
     50     if ((void*)NULL != lib) {
     51         dlerror();
     52         getLBSProxy_t* getter = (getLBSProxy_t*)dlsym(lib, "getLBSProxy");
     53         if (NULL != getter) {
     54             proxy = (*getter)();
     55         }
     56         else {
     57             LOC_LOGD("%s:%d]: getter is NULL. Reason: %s", __func__, __LINE__, dlerror());
     58         }
     59     }
     60     else {
     61         LOC_LOGD("%s:%d]: lib is NULL. Reason: %s", __func__, __LINE__, dlerror());
     62     }
     63     if (NULL == proxy) {
     64         proxy = new LBSProxyBase();
     65     }
     66     LOC_LOGD("%s:%d]: Exiting\n", __func__, __LINE__);
     67     return proxy;
     68 }
     69 
     70 LocApiBase* ContextBase::createLocApi(LOC_API_ADAPTER_EVENT_MASK_T exMask)
     71 {
     72     LocApiBase* locApi = NULL;
     73 
     74     // first if can not be MPQ
     75     if (TARGET_MPQ != loc_get_target()) {
     76         if (NULL == (locApi = mLBSProxy->getLocApi(mMsgTask, exMask, this))) {
     77             void *handle = NULL;
     78             //try to see if LocApiV02 is present
     79             if((handle = dlopen("libloc_api_v02.so", RTLD_NOW)) != NULL) {
     80                 LOC_LOGD("%s:%d]: libloc_api_v02.so is present", __func__, __LINE__);
     81                 dlerror();
     82                 getLocApi_t* getter = (getLocApi_t*)dlsym(handle, "getLocApi");
     83                 if(getter != NULL) {
     84                     LOC_LOGD("%s:%d]: getter is not NULL for LocApiV02", __func__, __LINE__);
     85                     locApi = (*getter)(mMsgTask,exMask, this);
     86                 }
     87                 else {
     88                     LOC_LOGD("%s:%d]: getter is NULL. Reason: %s", __func__, __LINE__, dlerror());
     89                 }
     90             }
     91             // only RPC is the option now
     92             else {
     93                 LOC_LOGD("%s:%d]: libloc_api_v02.so is NOT present. Trying RPC",
     94                          __func__, __LINE__);
     95                 handle = dlopen("libloc_api-rpc-qc.so", RTLD_NOW);
     96                 if (NULL != handle) {
     97                     getLocApi_t* getter = (getLocApi_t*)dlsym(handle, "getLocApi");
     98                     if (NULL != getter) {
     99                         LOC_LOGD("%s:%d]: getter is NULL in RPC", __func__, __LINE__);
    100                         locApi = (*getter)(mMsgTask, exMask, this);
    101                     }
    102                 }
    103             }
    104         }
    105     }
    106 
    107     // locApi could still be NULL at this time
    108     // we would then create a dummy one
    109     if (NULL == locApi) {
    110         locApi = new LocApiBase(mMsgTask, exMask, this);
    111     }
    112 
    113     return locApi;
    114 }
    115 
    116 ContextBase::ContextBase(const MsgTask* msgTask,
    117                          LOC_API_ADAPTER_EVENT_MASK_T exMask,
    118                          const char* libName) :
    119     mLBSProxy(getLBSProxy(libName)),
    120     mMsgTask(msgTask),
    121     mLocApi(createLocApi(exMask)),
    122     mLocApiProxy(mLocApi->getLocApiProxy())
    123 {
    124 }
    125 
    126 }
    127