src/apps/atom-base/progs/property/libprop/prop_api.c

/* Copyright Statement:

 * This software/firmware and related documentation ("MediaTek Software") are
 * protected under relevant copyright laws. The information contained herein is
 * confidential and proprietary to MediaTek Inc. and/or its licensors. Without
 * the prior written permission of MediaTek inc. and/or its licensors, any
 * reproduction, modification, use or disclosure of MediaTek Software, and
 * information contained herein, in whole or in part, shall be strictly
 * prohibited.

 * MediaTek Inc. (C) 2015. All rights reserved.

 * BY OPENING THIS FILE, RECEIVER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
 * THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
 * RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO RECEIVER
 * ON AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL
 * WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
 * NONINFRINGEMENT. NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH
 * RESPECT TO THE SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY,
 * INCORPORATED IN, OR SUPPLIED WITH THE MEDIATEK SOFTWARE, AND RECEIVER AGREES
 * TO LOOK ONLY TO SUCH THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO.
 * RECEIVER EXPRESSLY ACKNOWLEDGES THAT IT IS RECEIVER'S SOLE RESPONSIBILITY TO
 * OBTAIN FROM ANY THIRD PARTY ALL PROPER LICENSES CONTAINED IN MEDIATEK
 * SOFTWARE. MEDIATEK SHALL ALSO NOT BE RESPONSIBLE FOR ANY MEDIATEK SOFTWARE
 * RELEASES MADE TO RECEIVER'S SPECIFICATION OR TO CONFORM TO A PARTICULAR
 * STANDARD OR OPEN FORUM. RECEIVER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S
 * ENTIRE AND CUMULATIVE LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE
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 * MEDIATEK SOFTWARE AT ISSUE, OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE
 * CHARGE PAID BY RECEIVER TO MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "cutils/properties.h"
#include "request.h"
#include "prop_debug.h"

/*******************************************************************************/
/* LIBSNCFG functions for Android Property Mechanism                           */
/*******************************************************************************/
int _property_check(const char *key, const char *value)
{
    if (key == 0) {
		 PROP_DEBUG_PRINT(PROP_DEBUG_ERROR, "[PropSet] key==0 return directly\n");
		 return -1;
	}

    if (strlen(key) >= PROPERTY_KEY_MAX) {
		PROP_DEBUG_PRINT(PROP_DEBUG_ERROR, "[PropSet] key=%s size:%zd >= max:%d\n",
				                            key, strlen(key), PROPERTY_KEY_MAX);
		 return -1;
	}

    if (strlen(value) >= PROPERTY_VALUE_MAX) {
		PROP_DEBUG_PRINT(PROP_DEBUG_ERROR, "[PropSet] value=%s size:%zd >= max:%d\n",
				                            value, strlen(value), PROPERTY_VALUE_MAX);
		return -1;
	}
	
    return  0;
}

int property_get(const char *key, char *value, const char *default_value)
{
	struct  sncfg_request request;
    int     ret_len = 1;

    /*check validaty*/
    if ((key == 0) || (value == 0)) {
		 PROP_DEBUG_PRINT(PROP_DEBUG_ERROR, "[PropSet] key==0 return directly\n");
		 return -1;
	}

	if (strlen(key) >= PROPERTY_KEY_MAX) {
		PROP_DEBUG_PRINT(PROP_DEBUG_ERROR, "[PropSet] key=%s size:%zd >= max:%d\n",
											key, strlen(key), PROPERTY_KEY_MAX);
		 return -1;
	}

    /*send socket to get the value*/
	bzero(&request, sizeof(struct sncfg_request));
	request.magic = SNCFG_REQUEST_MAGIC;
	request.type = SNCFG_REQUEST_TYPE_PROP_GET;
	request.key = (char *)key;
	if (request_for_sncfg(&request) < 0) {
        ret_len = 0;        
	} else if (NULL == request.value) {
        ret_len = 0;
    }

    /*
    *  1. normal case: use db's value.
    *  2. other case: use default value.
    */
    if (ret_len>0) {
        ret_len = strlen(request.value);
        if (ret_len >= PROPERTY_VALUE_MAX)  {
            ret_len = PROPERTY_VALUE_MAX - 1;
        }
        strncpy(value, request.value, ret_len);
        value[ret_len] = '\0';
    } else {
        if (default_value) {
            ret_len = strlen(default_value);
            if (ret_len >= PROPERTY_VALUE_MAX) {
                ret_len = PROPERTY_VALUE_MAX - 1;
            }
            memcpy(value, default_value, ret_len);
            value[ret_len] = '\0';
        } else {
            value[0] = '\0';
        }
    }

	return  ret_len;	
}

int property_set(const char *key, const char *in_value)
{
	struct 	sncfg_request request;
	char	*value = "";

	if (in_value != NULL)
		value = in_value;
	
    if (_property_check(key, value) < 0) {
        return  -1;
    }

	bzero(&request, sizeof(struct sncfg_request));
	request.magic = SNCFG_REQUEST_MAGIC;
	request.type = SNCFG_REQUEST_TYPE_PROP_SET;
	request.key = (char *)key;
	request.value = (char *)value;
	if (request_for_sncfg(&request) < 0) {
		return -1;
	}
	
	return 0;
}

int property_reload(void)
{
	struct sncfg_request request;
	
	bzero(&request, sizeof(struct sncfg_request));
	
	request.magic = SNCFG_REQUEST_MAGIC;
	request.type = SNCFG_REQUEST_TYPE_PROP_RELOAD;	
	if (request_for_sncfg(&request) < 0) {
		return -1;
	}
	
	return 0;		
}

int property_debug(char *key, char *in_value)
{
	struct sncfg_request request;
	char	*value = "";

	if (in_value != NULL)
		value = in_value;

    if (_property_check(key, value) < 0) {
        return  -1;
    }
    
	bzero(&request, sizeof(struct sncfg_request));
	request.magic = SNCFG_REQUEST_MAGIC;
	request.type = SNCFG_REQUEST_TYPE_PROP_DEBUG;
	request.key = key;
	request.value = value;
	if (request_for_sncfg(&request) < 0) {
		return -1;
	}

	return 0;	
}