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// find the start and end of the upload file.
static FILE * _uploadGet(request *wp, unsigned int *startPos, unsigned *endPos) {
FILE *fp=NULL;
struct stat statbuf;
unsigned char c, *buf;
if (wp->method == M_POST)
{
fstat(wp->post_data_fd, &statbuf);
lseek(wp->post_data_fd, SEEK_SET, 0);
printf("file size=%d\n",statbuf.st_size);
fp=fopen(wp->post_file_name,"rb");
if(fp==NULL) goto error;
}
else goto error;
//printf("_uploadGet\n");
do
{
if(feof(fp))
{
printf("Cannot find start of file\n");
goto error;
}
c= fgetc(fp);
if (c!=0xd)
continue;
c= fgetc(fp);
if (c!=0xa)
continue;
c= fgetc(fp);
if (c!=0xd)
continue;
c= fgetc(fp);
if (c!=0xa)
continue;
break;
}while(1);
(*startPos)=ftell(fp);
if(fseek(fp,statbuf.st_size-0x200,SEEK_SET)<0)
goto error;
do
{
if(feof(fp))
{
printf("fmmgmt: Cannot find end of file\n");
goto error;
}
c= fgetc(fp);
if (c!=0xd)
continue;
c= fgetc(fp);
if (c!=0xa)
continue;
c= fgetc(fp);
if (c!='-')
continue;
c= fgetc(fp);
if (c!='-')
continue;
break;
}while(1);
(*endPos)=ftell(fp);
return fp;
error:
return NULL;
}
Вот так вот китайцы парсят MIME при загрузке прошивки в роутер.
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