libbt/src/conf.c

/******************************************************************************
 *
 *  Copyright (C) 2009-2012 Broadcom Corporation
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at:
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 ******************************************************************************/

/******************************************************************************
 *
 *  Filename:      conf.c
 *
 *  Description:   Contains functions to conduct run-time module configuration
 *                 based on entries present in the .conf file
 *
 ******************************************************************************/

#define LOG_TAG "bt_vnd_conf"

#include <utils/Log.h>
#include <string.h>
#include "bt_vendor_brcm.h"

/******************************************************************************
**  Externs
******************************************************************************/
int userial_set_port(char *p_conf_name, char *p_conf_value, int param);
int hw_set_patch_file_path(char *p_conf_name, char *p_conf_value, int param);
int hw_set_patch_file_name(char *p_conf_name, char *p_conf_value, int param);
#if (VENDOR_LIB_RUNTIME_TUNING_ENABLED == TRUE)
int hw_set_patch_settlement_delay(char *p_conf_name, char *p_conf_value, int param);
#endif


/******************************************************************************
**  Local type definitions
******************************************************************************/

#define CONF_COMMENT '#'
#define CONF_DELIMITERS " =\n\r\t"
#define CONF_VALUES_DELIMITERS "=\n\r\t"
#define CONF_MAX_LINE_LEN 255

typedef int (conf_action_t)(char *p_conf_name, char *p_conf_value, int param);

typedef struct {
    const char *conf_entry;
    conf_action_t *p_action;
    int param;
} conf_entry_t;

/******************************************************************************
**  Static variables
******************************************************************************/

/*
 * Current supported entries and corresponding action functions
 */
static const conf_entry_t conf_table[] = {
    {"UartPort", userial_set_port, 0},
    {"FwPatchFilePath", hw_set_patch_file_path, 0},
    {"FwPatchFileName", hw_set_patch_file_name, 0},
#if (VENDOR_LIB_RUNTIME_TUNING_ENABLED == TRUE)
    {"FwPatchSettlementDelay", hw_set_patch_settlement_delay, 0},
#endif
    {(const char *) NULL, NULL, 0}
};

/*****************************************************************************
**   CONF INTERFACE FUNCTIONS
*****************************************************************************/

/*******************************************************************************
**
** Function        vnd_load_conf
**
** Description     Read conf entry from p_path file one by one and call
**                 the corresponding config function
**
** Returns         None
**
*******************************************************************************/
void vnd_load_conf(const char *p_path)
{
    FILE    *p_file;
    char    *p_name;
    char    *p_value;
    conf_entry_t    *p_entry;
    char    line[CONF_MAX_LINE_LEN+1]; /* add 1 for \0 char */

    ALOGI("Attempt to load conf from %s", p_path);

    if ((p_file = fopen(p_path, "r")) != NULL)
    {
        /* read line by line */
        while (fgets(line, CONF_MAX_LINE_LEN+1, p_file) != NULL)
        {
            if (line[0] == CONF_COMMENT)
                continue;

            p_name = strtok(line, CONF_DELIMITERS);

            if (NULL == p_name)
            {
                continue;
            }

            p_value = strtok(NULL, CONF_DELIMITERS);

            if (NULL == p_value)
            {
                ALOGW("vnd_load_conf: missing value for name: %s", p_name);
                continue;
            }

            p_entry = (conf_entry_t *)conf_table;

            while (p_entry->conf_entry != NULL)
            {
                if (strcmp(p_entry->conf_entry, (const char *)p_name) == 0)
                {
                    p_entry->p_action(p_name, p_value, p_entry->param);
                    break;
                }

                p_entry++;
            }
        }

        fclose(p_file);
    }
    else
    {
        ALOGI( "vnd_load_conf file >%s< not found", p_path);
    }
}