TC写的,病毒扫描修复程序源代码.

#define VALLEN 2   
#include"stdio.h"   
#include"dir.h"   
#include"string.h"   
#include"dos.h"   
FILE *fp;   
struct ffblk ffb,dirment;   
char driver,curdiver,path[MAXDIR],curpath[MAXDIR];   
unsigned char curval[VALLEN],saveval[VALLEN];   
int p,status=0;   
void pathm(void);   
void dirm(void);   
void scan(void);   
void log(void);   
main(int argc,char *argv[])   
{   
if(!stricmp(argv[2],"/b")||!stricmp(argv[2],"/B"))   
status=0;   
else if(!stricmp(argv[2],"/s")||!stricmp(argv[2],"/S"))   
status=1;   
curdriver=getdisk();   
getcwd(curpath,MAXDIR);   
driver=toupper(argv[1][0])-'A';   
setdisk(driver);   
chdir(argv[1]);   
strcpy(dirment.ff_name,argv[1]);   
pathm();   
setdisk(curdriver);   
chdir(curpath);   
exit(0);   
}   

void pathm()   
{   
dirm();   
getcwd(path,MAXDIR);   
p=findfirst("*.*",%dirment,0x3f);   
if(!p&&dirment.ff_name[0]=='.')   
{   
p=findnext(&dirment);   
p=findnext(&dirment);   
}   
while(!p)   
{   
if((dirment.ff_attrib&0x10)==FA_DIREC)   
{   
chdir(dirment.ff_name);   
dirm();   
chdir(path);   
}   
p=findnext(&dirment);   
}   
}   

void dirm()   
{   
int done;   
printf("Scanning directory %s\n",dirment.ff_name);   
done=findfirst("*.*",&ffb,0);   
while(!done)   
{   
if(strstr(ffb.ff_name,".COM")||strstr(ffb.ff_name,".EXE"))   
{   
fp=fopen(ffb.ff_name,"rb+");   
switch(status)   
{   
case 0:log();break;   
case 1:scan();break;   
}   
}   
done=findnext(&ffb);   
}   
}   

void scan()   
{   
int i;   
printf("Scanning %s\n",ffb.ff_name);   
fseek(fp,1,SEEK_SET);   
fread(curval,VALLEN,1,fp);   
fseek(fp,VALLEN,SEEK_END);   
fread(saveval,VALLEN,1,fp);   
for(i=0;i<VALLEN;i++)   
if(curval[i]!=saveval[i])   
{   
printf("File %s was changed!\n",ffb.ff_name);   
break;   
}   
fclose(fp);   
}   

void log()   
{   
fseek(fp,1,SEEK_SET);   
fread(curval,VALLEN,1,fp);   
fseek(fp,0,SEEK_END);   
fwrite(curval,VALLEN,1,fp);   
fclose(fp);   
printf("%s loginned!\n",ffb.ff_name);   
}   

程序设计:Kevin'W.Y.J