后台扫描,网测通过

#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include

#define LINE 1024
#define dict "dict.txt"
#define result "manager.txt"

int main(int argc,char *argv[]){
int sc,fd;
unsigned short port = 80;
struct sockaddr_in add;struct in_addr in;
char *ip;
struct hostent *host;
char rheader[LINE],dictbuf[LINE],resbuf[LINE];
char *dir,path[LINE]="",*arr[LINE],*tmp,state[3],manager[LINE];
int i=0,j,n=0,bytes;

if(argc != 2){
printf("please input domain.\r\n");
return;
}

dir = get_current_dir_name();
strcat(path,dir);
strcat(path,"/");
strcat(path,dict);
fd = open(path,O_RDONLY);
read(fd,dictbuf,sizeof(dictbuf));
close(fd);
arr[n++]=strtok(dictbuf,"\r\n");
while(tmp=strtok(NULL,"\r\n"))arr[n++]=tmp;

ip = malloc(512);
memset(ip,'\0',512);

sc = socket(AF_INET,SOCK_STREAM,0);
if(sc == -1){
printf("create socket fail!\r\n");
return;
}

bzero(&add,sizeof(add));
add.sin_family=AF_INET;
add.sin_port=htons(port);

bzero(&path,sizeof(path));
strcat(path,dir);
strcat(path,"/");
strcat(path,result);
fd = open(path,O_WRONLY|O_CREAT|O_APPEND,S_IRWXU);

if(!(host=gethostbyname(argv[1]))){
fprintf(stderr,"Can`t resolve host.\n");
exit(1);
}

memcpy(&add.sin_addr.s_addr,host->h_addr_list[0],4);
in.s_addr = add.sin_addr.s_addr;
printf("IP:%s\n",ip=inet_ntoa(in));

add.sin_addr.s_addr=inet_addr(ip);
if(connect(sc,(struct sockaddr *)(&add),sizeof(struct sockaddr))==-1){
printf("conn fail!\r\n");
return -1;
}
for(;imemset(manager,'\0',LINE);
memset(rheader,'\0',LINE);

strcat(rheader,"HEAD ");
strcat(rheader,arr[i]);
strcat(rheader," HTTP/1.1");
strcat(rheader,"\r\n");

strcat(rheader,"Host:");
strcat(rheader,argv[1]);
strcat(rheader,"\r\n");

strcat(rheader,"\r\n");
printf("send:[\n%s\n]\n",rheader);
write(sc, rheader, strlen(rheader));usleep(100);
bytes = read(sc, resbuf, LINE);
printf("Response from %s:[\n%s\n]\n",ip,resbuf);

for(j=0;j<3;j++){
state[j]=resbuf[j+9];
}
printf("state:%s\n",state);
if(!((strcmp(state,"400")>=0 && strcmp(state,"450")<=0)||strcmp(state,"500")==0)){
strcat(manager,"http://");
strcat(manager,argv[1]);
strcat(manager,arr[i]);
printf("********%s*******\n",manager);
strcat(manager,"\r\n");
write(fd,manager,sizeof(manager));
}
}
close(sc);
close(fd);
return 0;
}