secgateway/Platform/user/configm/config-server/netconfig/parsefile.c

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>

#include "parsefile.h"
#include "rpc.h"

/* 缓存字符串保存到配置文件中 */
int conf_file_write(char *conf_path, char *sum_buf)
{
    FILE *fp;
    fp = fopen(conf_path,"w+");
    if(fp == NULL)
    {
        rpc_log_error("OPEN CONFIG FALID\n");
        return RET_ERR;
    }
    fseek(fp,0,SEEK_SET);
    fputs(sum_buf,fp);
    fclose(fp);

    return RET_OK;
}

/* 设置指定配置块中的配置 */
int conf_value_in_block_set(char *conf_path, 
                            char *start_str, char *end_str,
                            char *conf_name, char *conf_buff)
{
    char config_linebuf[IF_BUFF_LEN];    
    int configbuf_lenth = strlen(conf_buff) + 5;
    long config_lenth = 0;
    boolean next_flag = FALSE;
    char *start_line = NULL;    
    char *config_line = NULL;
    FILE *f;
    
    f = fopen(conf_path,"r+");
    if(f == NULL)
    {
        rpc_log_error("OPEN CONFIG %s FALID\n", conf_path);
        return RET_ERR;
    }

    fseek(f, 0, SEEK_END);
    
    config_lenth = ftell(f);
    
    char sum_buf[config_lenth + configbuf_lenth];
    
    memset(sum_buf, 0, sizeof(sum_buf));
    
    fseek(f, 0, SEEK_SET); 

    memset(config_linebuf, 0, sizeof(config_linebuf));

    while(fgets(config_linebuf, IF_BUFF_LEN, f) != NULL)
    {           
        /* 该做的事情已经做完 */
        if(next_flag == TRUE)
        {
            strcat(sum_buf, config_linebuf);
            goto next_while;
        }
        
        /* 判断是否是空行 */
        if(strlen(config_linebuf) < 3)
        {
            strcat(sum_buf, config_linebuf);
            goto next_while;
        }

        /* 没有找到配置块，则继续循环 */
        if(start_line == NULL)
        {        
            start_line = strstr(config_linebuf, start_str);
            strcat(sum_buf, config_linebuf);
            goto next_while;
        }
                
        /* 配置块结束 */
        if(strstr(config_linebuf, end_str))
        {
            if(config_line == NULL)
            {
                strcat(sum_buf, conf_buff);
            }
            
            strcat(sum_buf, config_linebuf);
            next_flag = TRUE;
            
            goto next_while;
        }

        if(config_line == NULL)
        {
            config_line = strstr(config_linebuf, conf_name);
            
            /* 找到配置行 */
            if(config_line)
            {
                next_flag = TRUE;
                strcat(sum_buf, conf_buff);
                goto next_while;
            }
        }
     
        strcat(sum_buf, config_linebuf);
        
next_while:
        if(fgetc(f)==EOF)
        {
            break;  
        }
        
        fseek(f,-1,SEEK_CUR);
        
        memset(config_linebuf, 0, sizeof(config_linebuf));
    }

    /* 整个配置块都没有，则新创建该配置块 */
    if( next_flag == FALSE )
    {
        if(start_line == NULL)
        {   
            strcat(sum_buf, start_str);
            strcat(sum_buf, "\n");
        }
        
        if(config_line == NULL)
        {
            strcat(sum_buf, conf_buff);
        }        
    }
    
    remove(conf_path);
    fclose(f);
    
    rpc_log_dbg("---sum_buf---->%s<----------\n",sum_buf);
    
    return conf_file_write(conf_path, sum_buf);
}

/* 删除指定配置块中的配置 */
int conf_value_in_block_del(char *conf_path, char *start_str, 
                            char *end_str, char *conf_buff)
{
    char config_linebuf[IF_BUFF_LEN];
    int configbuf_lenth = strlen(conf_buff) + 5;
    long congig_lenth = 0;
    
    boolean next_flag = FALSE;
    char *start_line = NULL;
    FILE *f = fopen(conf_path, "r+");
    
    if(f == NULL)
    {
        printf("OPEN CONFIG FALID\n");
        return RET_ERR;
    }

    fseek(f, 0, SEEK_END);
    
    congig_lenth = ftell(f);
    
    char sum_buf[congig_lenth + configbuf_lenth];
    
    memset(sum_buf, 0, sizeof(sum_buf));
    
    fseek(f, 0, SEEK_SET); 

    memset(config_linebuf, 0, sizeof(config_linebuf));
    
    while(fgets(config_linebuf, IF_BUFF_LEN,f) != NULL)
    {   
        /* 该做的事情已经做完 */
        if(next_flag == TRUE)
        {
            strcat(sum_buf, config_linebuf);
            goto next_while;
        }

        /* 判断是否是空行 */
        if(strlen(config_linebuf) < 3)
        {
            strcat(sum_buf, config_linebuf);
            goto next_while;
        }

       /* 没有找到接口配置块，则继续循环 */
        if(start_line == NULL)
        {        
            start_line = strstr(config_linebuf, start_str);
            strcat(sum_buf, config_linebuf);
            goto next_while;
        }
        
        /* 已经是下一个接口了, 则表示无法找到*/
        if(strstr(config_linebuf, end_str))
        {
            strcat(sum_buf, config_linebuf);
            next_flag = TRUE;
            goto next_while;
        }
        
        /* 找到配置行 */
        if(strstr(config_linebuf, conf_buff))
        {
            next_flag = TRUE;
        }
        else
        {
            strcat(sum_buf, config_linebuf);
        }
        
    next_while:
    
        if(fgetc(f)==EOF)
        {
            break;  
        }
        fseek(f,-1,SEEK_CUR);
        
        memset(config_linebuf, 0, sizeof(config_linebuf));
    }
    
    remove(conf_path);
    fclose(f);
    
    rpc_log_dbg("---sum_buf---->%s<----------\n",sum_buf);
    
    return conf_file_write(conf_path, sum_buf);
}

int conf_value_block_del(char *conf_path, char *start_str, char *end_str)
{
    char config_linebuf[IF_BUFF_LEN];
    long congig_lenth = 0;
    boolean next_flag = FALSE;
    char *start_line = NULL;
    FILE *f = fopen(conf_path, "r+");
    
    if(f == NULL)
    {
        printf("OPEN CONFIG FALID\n");
        return RET_ERR;
    }

    fseek(f, 0, SEEK_END);
    
    congig_lenth = ftell(f);
    
    char sum_buf[congig_lenth];
    
    memset(sum_buf, 0, sizeof(sum_buf));
    
    fseek(f, 0, SEEK_SET); 

    memset(config_linebuf, 0, sizeof(config_linebuf));
    
    while(fgets(config_linebuf, IF_BUFF_LEN,f) != NULL)
    {   
        /* 该做的事情已经做完 */
        if(next_flag == TRUE)
        {
            strcat(sum_buf, config_linebuf);
            goto next_while;
        }

        /* 判断是否是空行 */
        if(strlen(config_linebuf) < 3)
        {
            strcat(sum_buf, config_linebuf);
            goto next_while;
        }

       /* 没有找到接口配置块，则继续循环 */
        if(start_line == NULL)
        {        
            start_line = strstr(config_linebuf, start_str);
            if(start_line == NULL)
            {
                strcat(sum_buf, config_linebuf);
            }
            goto next_while;
        }
        
        /* 已经到了end, 删除结束*/
        if(strstr(config_linebuf, end_str))
        {
            strcat(sum_buf, config_linebuf);
            next_flag = TRUE;
            goto next_while;
        }

        if(next_flag == TRUE)
        {
            strcat(sum_buf, config_linebuf);
        }
        
    next_while:
    
        if(fgetc(f)==EOF)
        {
            break;  
        }
        fseek(f,-1,SEEK_CUR);
        
        memset(config_linebuf, 0, sizeof(config_linebuf));
    }
    
    remove(conf_path);
    fclose(f);
    
    rpc_log_dbg("---sum_buf---->%s<----------\n",sum_buf);
    
    return conf_file_write(conf_path, sum_buf);
}

/*
 *添加修改文件（当配置文件中存在标记字段，则进行修改，若不存在则进行添加）
 *
 *输入参数：1，接口名 2，匹配标记 3，替换或添加的内容
 *
 */

void ip_conf_file_set(char *if_name, char *conf_name, char *conf_buff)
{
    char auto_str[IF_BUFF_LEN] = {0};
    char iface_str[IF_BUFF_LEN] = {0};
    char static_name[IF_BUFF_LEN] = {0};

    sprintf(auto_str, "auto %s", if_name);
    sprintf(iface_str, "iface %s inet", if_name);
    sprintf(static_name, "iface %s inet static\n", if_name);
    
    conf_value_in_block_set(IFCONFIG_PATH, auto_str, "auto", iface_str, static_name);
    conf_value_in_block_set(IFCONFIG_PATH, auto_str, "auto", conf_name, conf_buff);

    return;
}


/*
 *删除配置文件内容
 *
 *输入参数：1，匹配标记 
 *
 */
void ip_conf_file_del(char *if_name, char *conf_buff)
{
    char auto_str[IF_BUFF_LEN] = {0};

    sprintf(auto_str, "auto %s", if_name);
    
    conf_value_in_block_del(IFCONFIG_PATH, auto_str, "auto", conf_buff);

    return;
}