fread读取文件数据程序,strstr无法匹配到指定字符串,请教一下是哪里的问题,谢谢

ID:731155 · 发表于 2021-9-25 11:00

要求：匹配bin文件中是否有"R_FW_FLAG"、"T_FW_FLAG"字符串，如果有返回真、和字符串所在文件中的偏移量(只使用fread读文件数据)。

问题：读取bin文件数据，strstr无法匹配到指定字符串，读出来的数据我打印出来确认跟bin文件是一样的，我的代码如下，bin文件如附件，请帮忙看看是哪里的问题，非常感谢！
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include<time.h>
#include <conio.h>

#ifdef __cplusplus
#error "1111"
extern "C" {
#endif

typedef signed char       int8_t; /*!< exact-width  8-bit signed int  */
typedef signed short    int16_t; /*!< exact-width 16-bit signed int  */
typedef signed long       int32_t; /*!< exact-width 32-bit signed int  */
typedef signed long long int64_t; /*!< exact-width 64-bit signed int  */

typedef unsigned char    uint8_t; /*!< exact-width  8-bit unsigned int  */
typedef unsigned short    uint16_t;  /*!< exact-width 16-bit unsigned int  */
typedef unsigned long    uint32_t;  /*!< exact-width 32-bit unsigned int  */
typedef unsigned long long uint64_t;  /*!< exact-width 64-bit unsigned int  */

void log_infox(const void *s, const uint8_t n)
{
      uint8_t i;

      if(n == 0) return;

      for(i = 0; i < n; i++)
      {
            //printf("%02X ", *(s + i));
            printf("%02X ", *((uint8_t *)s + i));
            //printf("%02X ", uint8_t*(s + i));
      }
      printf("\n");
}

#define R_FW_FLAG "R_FW_FLAG"
#define T_FW_FLAG "T_FW_FLAG"

#ifndef FALSE
#define FALSE  0
#endif

#ifndef TRUE
#define TRUE (!FALSE)
#endif
#define _OK TRUE
#define _FAIL  FALSE

FILE *fd;

#if 1
uint8_t file_read(void* buf,uint32_t offs, int len)
{
char*  err_str = "FAIL";
uint64_t read_sta = 0,seek_sta= 1;

      seek_sta = fseek(fd, offs, SEEK_SET);
      //printf("seek_sta=0x%x(%d),offs=0x%x(%d),len=0x%x(%d)\n",seek_sta,seek_sta,offs,offs,len,len);
if (seek_sta != 0)
{
         printf("\nfseek fail:fd=%d\n",fd);
      goto err;
}

      read_sta = fread(buf, 1,len,fd);
      //printf("read_sta=0x%x(%d)\n",read_sta,read_sta);
if (read_sta != len)
{
         printf("\nfread fail:fd=%d,len=%d,%d\n",fd,len,fread(buf, len,1,fd));
      goto err;
}

      //printf("file_read ok:fd=%d\n",fd);
return _OK;

err:
printf("%s,fd=%d\n",err_str,fd);
return _FAIL;
}
#endif

int main(int argc, char *argv[]) {
      printf("----main-----\n");
      uint64_t seek_offset = 0,length = 0,i = 0;
      //uint64_t j = 0,k = 0;
uint16_t upgarde_state;
      uint8_t temp_buf[500];
      uint8_t read_sta = _FAIL;
      (void) i;

      clock_t start,end;
      start = clock();

      memset(temp_buf,0x00,sizeof(temp_buf));
      if((fd = fopen("test.bin","rb"))==NULL)//同main.c目录下
      {
            printf("Open file fail!\n");
            exit(1);
      }

      fseek(fd,0L,SEEK_END);
      length = ftell(fd);
      printf("file lenght=0x%x(%d)\n",length,length);

      //file_read(&temp_buf[0],seek_offset,64);
      //log_infox(temp_buf,64);
      printf("\n");

      while(1)
      {

         read_sta = file_read((void*)temp_buf+seek_offset,seek_offset,16);
         seek_offset+=16;

            if (read_sta == _OK)
            {

                     log_infox((void*)temp_buf+(seek_offset-16),16);

                     #if 1
                     if (!(upgarde_state&0x04))
                     if (strstr(temp_buf, R_FW_FLAG) != NULL)
                     {
                              upgarde_state|= 0x04;
                              printf("check R fw flag ok!\n");
                              end = clock(); //结束时，取得结束时间

                              printf("Run time: %lf S\n",(double)(end-start)/CLOCKS_PER_SEC);
                              //break;
                     }

                     if (!(upgarde_state&0x08))
                     if (strstr(temp_buf, T_FW_FLAG) != NULL)
                     {
                              upgarde_state|= 0x08;
                              printf("check T fw flag ok!\n");
                              end = clock(); //结束时，取得结束时间

                              printf("Run time: %lf S\n",(double)(end-start)/CLOCKS_PER_SEC);
                              //break;
                     }
                     #endif
            }
            else
            {
                     goto main_end;
            }

      }

      main_end:
            end = clock(); //结束时，取得结束时间
            printf("main end: %lf S\n",(double)(end-start)/CLOCKS_PER_SEC);

      return 0;
}

#ifdef __cplusplus
}
#endif

ID:731155 · 发表于 2021-12-22 22:37

已自行摸索解决了

帐号		自动登录	找回密码
密码			立即注册