import old mobicore

[GitHub/LineageOS/android_hardware_samsung_slsi_exynos7580.git] / mobicore / rootpa / Code / Common / contentmanager.c

/*
Copyright  © Trustonic Limited 2013

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 Trustonic Limited 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 COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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.
*/

#include <string.h>
#include <stdlib.h>
#include <MobiCoreDriverApi.h>

#include "tools.h"
#include "logging.h"
#include "pacmp3.h"
#include "pacmtl.h"
#include "registry.h"
#include "trustletchannel.h"
#include "contentmanager.h"

static CMTHANDLE handle_=NULL;

void closeCmtlSession()
{
    tltChannelClose(handle_);
    handle_=NULL;
}

rootpaerror_t openCmtlSession()
{
    mcResult_t error=0;
    rootpaerror_t ret=ROOTPA_OK;

    if(handle_)
    {
        closeCmtlSession();
    }
    
    handle_=tltChannelOpen(sizeOfCmp(), &error);
    if(NULL==handle_)
    {
        if(MC_DRV_ERR_NO_FREE_MEMORY==error)
        {
            ret=ROOTPA_ERROR_OUT_OF_MEMORY;
        }
        else
        {
            ret=ROOTPA_ERROR_MOBICORE_CONNECTION;
        }
    }    
    return ret;
}

rootpaerror_t executeOneCmpCommand(CMTHANDLE handle, CmpMessage* commandP, CmpMessage* responseP);

rootpaerror_t executeContentManagementCommands(int numberOfCommands, CmpMessage* commandsP, CmpMessage* responsesP, uint32_t* internalError)
{    
    LOGD(">>executeContentManagementCommands");
    rootpaerror_t ret=ROOTPA_OK ;
    rootpaerror_t iRet=ROOTPA_OK ;
    bool selfOpened=false;
    
    *internalError=0;

    if(handle_==NULL)
    {
        // doProvisioining opens session earlier. Lock opens and closes session when called by client
        // this is for commands that do not require the client to call the lock.

        ret=openCmtlSession();
        selfOpened=true;
    }
    CMTHANDLE handle=handle_; 
    
    if (handle)
    {
        int i;
        for(i=0; i<numberOfCommands;i++)
        {
            responsesP[i].hdr.id=commandsP[i].hdr.id; // match the id;
            responsesP[i].hdr.ignoreError=commandsP[i].hdr.ignoreError;
            
            if(commandsP[i].length>0)
            {
                if(((iRet=executeOneCmpCommand(handle, &commandsP[i], &responsesP[i]))!=ROOTPA_OK))
                {
                    // returning actual error in case of the command failed
                    ret=iRet;
                    if(ROOTPA_OK==responsesP[i].hdr.ret)
                    {
                        responsesP[i].hdr.ret=ret;
                    }
                    
                    if(commandsP[i].hdr.ignoreError==false)
                    {
                        LOGE("executeContentManagementCommands, ignoreError==false, returning %d", ret);
                        return ret;
                    }
                }
            }
            else
            {
                LOGE("executeContentManagementCommands, empty command");
            }            
        }

        if(ret!=ROOTPA_OK)
        {
            *internalError = handle->lasterror;
        }
    }
    else
    {
        LOGE("no handle %d", *internalError);
        if(MC_DRV_ERR_NO_FREE_MEMORY == *internalError)
        {
            ret=ROOTPA_ERROR_OUT_OF_MEMORY;
        }
        else
        {
            ret=ROOTPA_ERROR_MOBICORE_CONNECTION;
        }
    }

    if(selfOpened)
    {
        closeCmtlSession();
    }

    LOGD("<<executeContentManagementCommands %d", ret);
    return ret;
}

/**
*/
rootpaerror_t executeOneCmpCommand(CMTHANDLE handle, CmpMessage* commandP, CmpMessage* responseP)
{
    LOGD(">>executeOneCmpCommand");
    if (unlikely( bad_write_ptr(handle,sizeof(CMTSTRUCT)))) 
    {
        return ROOTPA_ERROR_INTERNAL;
    }
    if(unlikely (commandP->contentP==NULL || commandP->length< sizeof(cmpCommandId_t)))
    {
        return ROOTPA_ERROR_INTERNAL;
    }

    mcResult_t mcRet=MC_DRV_OK;
    cmpCommandId_t commandId=getCmpCommandId(commandP->contentP);
        
    handle->mappedSize=getTotalMappedBufferSize(commandP);
    if(0==handle->mappedSize)
    {
        LOGE("<<executeOneCmpCommand, command %d not supported", commandId);
        return ROOTPA_COMMAND_NOT_SUPPORTED;
    }

    rootpaerror_t ret=ROOTPA_OK;
    while(true) 
    {
        handle->mappedP=malloc((size_t) handle->mappedSize);
        if(NULL==handle->mappedP)
        {
            ret=ROOTPA_ERROR_OUT_OF_MEMORY;
            break;
        }
        memset(handle->mappedP, 0,handle->mappedSize);
        mcRet=mcMap(&handle->session, handle->mappedP, handle->mappedSize, &handle->mapInfo);
        if(mcRet!=MC_DRV_OK)
        {
            LOGE("executeOneCmpCommand not able to map memory %d", mcRet);
            ret=ROOTPA_ERROR_MOBICORE_CONNECTION;
            commandP->hdr.intRet=mcRet;
            responseP->hdr.intRet=mcRet;
            break;
        }

        if((ret = prepareCommand(commandId, commandP, handle, responseP))!=ROOTPA_OK)
        {
            LOGE("prepareCommand failed %d", ret);
            break;
        }

        if (unlikely( !tltChannelTransmit(handle, NOTIFICATION_WAIT_TIMEOUT_MS)))
        {
            ret=ROOTPA_ERROR_MOBICORE_CONNECTION;
            commandP->hdr.intRet=handle->lasterror;
            responseP->hdr.intRet=handle->lasterror;
            break;
        }

        uint32_t neededBytes=getNeededBytesFromResponse(handle->wsmP);

        if(0==neededBytes)
        {
            break;
        }

        if(-1==neededBytes)
        {
            ret=ROOTPA_ERROR_MOBICORE_CONNECTION; 
            break;
        }

        if(neededBytes <= handle->mappedSize)
        {
            LOGE("executeOneCmpCommand, there is something wrong. CMTL is requesting smaller buffer than we originally had. Command: %d, original %d requested %d",  
	         commandId, handle->mappedSize, neededBytes);
            ret=ROOTPA_ERROR_MOBICORE_CONNECTION;
            break;
        }

        // this is Info level LOGI on purpose
        LOGI("executeOneCmpCommand, updating RootPA recommended (%d bytes was not enough for %d response, allocating %d bytes and retrying)", handle->mappedSize, commandId, neededBytes);
        mcRet=mcUnmap(&handle->session, handle->mappedP, &handle->mapInfo);
        if(mcRet!=MC_DRV_OK)
        {
            LOGE("executeOneCmpCommand not able to free mapped memory %d", mcRet);
            ret=ROOTPA_ERROR_MOBICORE_CONNECTION;
            commandP->hdr.intRet=mcRet;
            responseP->hdr.intRet=mcRet;
            break;
        }

        free(handle->mappedP);
        memset(&handle->mapInfo, 0 , sizeof(handle->mapInfo));
        handle->mappedSize=neededBytes;
    }

    if(ROOTPA_OK==ret)
    {
        ret=handleResponse(commandId, responseP, handle);
    }
    else
    {
        responseP->hdr.ret=ret;
    }
    LOGD("cleaning up mapped memory %ld",(long int) handle->mappedP);
    mcRet=mcUnmap(&handle->session, handle->mappedP, &handle->mapInfo);
    if(mcRet!=MC_DRV_OK)
    {
        LOGE("executeOneCmpCommand not able to free mapped memory %d", mcRet);
        ret=ROOTPA_ERROR_MOBICORE_CONNECTION;
    }
    LOGD("freeing mapped memory %ld", (long int) handle->mappedP);    
    free(handle->mappedP);    
    if(commandP->hdr.ret==ROOTPA_OK) commandP->hdr.ret=ret;
    if(responseP->hdr.ret==ROOTPA_OK) responseP->hdr.ret=ret;    
    LOGD("<<executeOneCmpCommand %d %d",commandId, ret);
    return ret;
}

rootpaerror_t uploadSo(uint8_t* containerDataP, uint32_t containerLength, uint32_t* regRetP)
{
    *regRetP = regWriteAuthToken((AUTHTOKENCONTAINERP) containerDataP, containerLength);
    if( *regRetP != MC_DRV_OK)
    {
        LOGE("uploadSo regWriteAuthToken failed %d", *regRetP);
        return ROOTPA_ERROR_REGISTRY;
    }
    return ROOTPA_OK;
}