以非阻塞方式来实现对IP和端口的连接测试,非阻塞的socket我一直不会用,这段代码有空可以拿来学习学习。
- #include <afxext.h>
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#include <winsock.h>
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// 编译时需使用的库
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#pragma comment(lib,"wsock32.lib")
-
// select()成员定义
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#define ZERO (fd_set *)0
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// 变量定义
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int maxth, scanok, scannum;
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int portip, hoststart, hoststop, startport, endport; //定义了开始I和结束P地址,开始和结束端口
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long searchnum, searched;
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void usage(char *); // 定义显示使用方法函数
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void playx(int); // 定义状态提示函数
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void setip2(char *); // 定义设置IP函数
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void customport(char *, char *, char *); // 定义自定义扫描端口函数
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void portscannow(int); // 定义端口扫描扫描
-
-
// 主程序
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int main(int argc, char *argv[])
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{
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WSADATA wsadata;
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// 清屏
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system("cls.exe");
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// 显示版本信息
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printf("\r\n==================== HUC Command Line PortScanner V0.2 ====================");
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printf("\r\n=============== By Lion, Welcome to ===============\r\n\n");
-
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// 检查输入
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if ((argc < 3) || (argc > 4))
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{
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// 显示帮助提示
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usage(argv[0]);
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return -1;
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}
-
-
// 检测是否为port扫描
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if(!(stricmp(strlwr(argv[1]), "-p") == 0))
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{
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usage(argv[0]);
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return -1;
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}
-
-
// 程序初始化
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if (WSAStartup(MAKEWORD(1,1), &wsadata) != 0) //如果初始化错误
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{
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printf("\r\nWsatartup error"); //出错信息
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return -1;
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}
-
-
// 端口扫描参数转换
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// 如果参数为三个
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if (argc == 3)
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{
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// 直接设置IP
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setip2(argv[2]);
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}
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// 如果参数为四个
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else
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if (argc == 4)
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{
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// 进入定制端口扫描处理
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customport(argv[0], argv[2], argv[3]);
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}
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// 参数过多显示帮助
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else
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{
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usage(argv[0]);
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return -1;
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}
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// 扫描端口开始
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portscannow(argc);
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WSACleanup();
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return 0;
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}
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// 帮助提示函数
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void usage(char * prog)
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{
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printf("Usage: %s , prog);
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printf("\r\n\n );
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printf("\r\n -p [ Port|StartPort-EndPort ] < HostName|IP|StartIP-EndIP >");
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printf("\r\n\n Example: ");
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printf("\r\n %s -p 192.168.0.1", prog);
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printf("\r\n %s -p 192.168.0.1-192.168.0.254", prog);
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printf("\r\n %s -p 21-80 192.168.0.1", prog);
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printf("\r\n %s -p 21-80 192.168.0.1-192.168.0.254\r\n", prog);
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return;
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}
-
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// 进度提示
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void playx(int play = 0)
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{
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// 进度条
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char *plays[12]=
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{
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" | ",
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" / ",
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" - ",
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" \\ ",
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" | ",
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" / ",
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" - ",
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" \\ ",
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" | ",
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" / ",
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" - ",
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" \\ ",
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};
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if (searchnum != 0)
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{
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for (int i = 0 ; i <= 3; i ++)
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{
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printf(" =%s= %d%s Completed. \r", plays , searched * 100 / (searchnum + 1), "%");
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Sleep(5);
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}
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}
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else
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{
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printf(" =%s=\r", plays[play]); //显示进度
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Sleep(10);
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}
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}
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// 设置IP
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void setip2(char *cp)
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{
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int host;
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struct hostent *testhost;
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char *startip = "", *endip = "";
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// 判断是否为 192.168.0.1-192.168.0.254 形式的输入
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if (strstr(cp, "-") && strlen(cp) > 15 && strlen(cp) < 32)
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{
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// 提取出结束IP
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endip = strchr(cp, '-') + 1;
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// 提取出开始IP
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strncpy(startip, cp, strlen(cp) - strlen(strchr(cp, '-')));
-
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// 给控制要扫描IP段的变量赋值
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hoststart = ntohl(inet_addr(startip));
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hoststop = ntohl(inet_addr(endip));
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}
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else
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{
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// 取得输入的主机地址
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testhost = gethostbyname(startip);
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// 如果地址不存在
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if(!testhost)
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{
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WSACleanup( );
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printf("\r\nCan't get ip of: %s", cp);
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exit(-1);
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}
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// 给控制要扫描IP段的变量赋值
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memcpy(&host, testhost->h_addr, 4);
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hoststop = hoststart = ntohl(host);
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}
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}
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// 测试线程是否已满
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void TestThread(int thread = 200)
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{
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for (;;)
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{
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playx();
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// 测试线程是否已满
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if (maxth > thread)
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Sleep(100);
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else break;
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}
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return;
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}
-
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// 等待线程结束函数
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void WaitThreadEnd()
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{
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// 延时
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Sleep(6000);
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// 显示等待提示
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printf("\r \r\n");
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printf(" Wait ( %d )Thread end...\r\n", maxth);
-
-
for(;;)
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{
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// 判断所有线程是否已经结束
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if (maxth > 0)
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{
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// 延时等待线程序结束
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Sleep(100);
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playx();
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continue;
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}
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else break;
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}
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printf("\r\n");
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return;
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}
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// 定制端口扫描参数定义
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void customport(char *cp, char *cp2, char *cp3)
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{
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int intport;
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char *checker;
-
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// 处理要扫描的端口
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// 扫描开始端口变量赋值
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startport = atoi(cp2);
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// 扫描结束端口变量赋值
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endport = atoi(cp2);
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// 判断是否 21-80 形式
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if (strstr(cp2,"-"))
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{
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intport = atoi(checker = strchr(cp2, '-') + 1);
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if (intport > 0 && intport < 65536)
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// 扫描结束端口变量赋值
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endport = intport;
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}
-
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// 端口大小判断
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if (startport < 0 || startport > 65536 || endport < 0 || endport > 65535)
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{
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usage(cp);
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exit(-1);
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}
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// 处理ip地址
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setip2(cp3);
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}
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// 端口扫描函数
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UINT portscan(LPVOID port)
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{
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int addr = portip; // 取得要扫描的地址
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int sock;
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struct fd_set mask;
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struct timeval timeout;
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struct sockaddr_in server;
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unsigned long flag = 1;
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// 创建一个sock
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sock = socket(AF_INET, SOCK_STREAM, 0);
-
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// 创建sock失败处理
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if (sock == INVALID_SOCKET)
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{
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printf("\r\nSock Error:%s", WSAGetLastError());
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maxth --;
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return -1;
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}
-
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// 给sock成员赋值
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server.sin_family=AF_INET;
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server.sin_addr.s_addr = htonl(addr); // 要扫描的地址
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server.sin_port = htons(port); // 要扫描的端口
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// 显示进度
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playx();
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// 调用ioctlsocket()设置套接字为非阻塞模式
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if (ioctlsocket(sock, FIONBIO, &flag) != 0)
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{
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// 设置失败处理
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printf("\r\nSock Error:%s", WSAGetLastError());
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closesocket(sock);
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maxth --;
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return -1;
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}
-
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// 调用connect()连接远程主机端口
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connect(sock, (struct sockaddr*)&server, sizeof(server));
-
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timeout.tv_sec = 18; // 超时限制为18秒
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timeout.tv_usec = 0;
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FD_ZERO(&mask); // 清空集合mask
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FD_SET(sock, &mask); // 将sock放入集合mask中
-
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// 用select() 处理扫描结果
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switch(select(sock + 1, ZERO, &mask, ZERO, &timeout))
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{
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case -1:
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{
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printf("\r\nSelect() error");
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maxth --;
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return -1;
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}
-
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// sock超时处理
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case 0:
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{
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maxth --;
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closesocket(sock);
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return -1;
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}
-
-
default:
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if(FD_ISSET(sock, &mask))
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{
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// 禁止sock发送和接受数据
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shutdown(sock, 0);
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// 设置输出结果格式
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printf(" [Found:] %s Port: %d open.\r\n", inet_ntoa(server.sin_addr), ntohs(server.sin_port));
-
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// 关闭sock
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closesocket(sock);
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scanok ++;
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maxth --;
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return 1;
-
}
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}
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return 0;
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}
-
-
// 扫描开始主函数
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void portscannow(int xp)
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{
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int sport;
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char *timenow, timebuf[32];
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// 定义默认扫描的端口
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char *ports[32]={
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"21",
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"22",
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"23",
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"25",
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"53",
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"79",
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"80",
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"110",
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"111",
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"113",
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"123",
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"135",
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"139",
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"143",
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"443",
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"512",
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"513",
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"514",
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"515",
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"540",
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"1080",
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"1433",
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"1521",
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"1524",
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"3306",
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"3389",
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"5631",
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"6000",
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"6112",
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"8000",
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"8080",
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"12345" //这里你也可以自己定义要扫描的端口
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};
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// 显示扫描开始的时间
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timenow = _strtime(timebuf);
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printf("\r\nPortScan Start Time: %s\r\n\n",timenow);
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// 计数器初始化.
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maxth = 0;
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scanok = 0;
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scannum = 0;
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searched = 0;
-
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// 计算要扫描的端口数量
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searchnum = hoststop - hoststart +1;
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if(xp == 3)
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searchnum = searchnum * 32;
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if(xp == 4)
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searchnum = searchnum * (endport - startport +1);
-
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// 端口扫描开始
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for (portip = hoststart; portip <= hoststop; portip ++, scannum ++)
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{
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// *.*.*.0和*.*.*.255 地址处理
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if ((portip % 256) == 0 || (portip % 256) == 255)
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{
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if(xp == 3)
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searchnum = searchnum - 32;
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if(xp == 4)
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searchnum = searchnum - (endport - startport +1);
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scannum --;
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playx();
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continue;
-
}
-
-
if(i > 11) i = 0;
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// 默认端口扫描
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// scan 192.168.0.1
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// scan 192.168.0.1-192.168.0.254
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if (xp == 3)
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{
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for (sport = 0; sport < 32; sport ++, maxth ++, searched ++)
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{
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// 测试当前线程是否大于180
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TestThread(180);
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// 产生新的线程处理端口扫描
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CWinThread * pthread = AfxBeginThread(portscan,LPVOID(atoi((char*)ports[sport])));
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//延时
-
Sleep(120);
-
}
-
}
-
-
// 自定义端口扫描
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// scan -p 21 192.168.0.1
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// scan -p 21-80 192.168.0.1-192.168.0.254
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if (xp == 4)
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{ // 计算要扫描的端口
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sport = endport - startport;
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if(sport > 500 )
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{
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// 扫描自定义的端口
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for(sport = startport; sport <= endport; sport ++, maxth ++, searched ++)
-
{
-
TestThread(2000);
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// 产生新的线程处理端口扫描
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CWinThread * pthread = AfxBeginThread(portscan, LPVOID(sport));
-
// 延时
-
Sleep(10);
-
}
-
}
-
else
-
{
-
// 扫描自定义的端口
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for(sport = startport; sport <= endport; sport ++, maxth ++, searched ++)
-
{
-
// 测试当前线程是否大于250
-
TestThread(250);
-
// 产生新的线程处理端口扫描
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CWinThread * pthread = AfxBeginThread(portscan, LPVOID(sport));
-
// 延时
-
Sleep(100);
-
playx();
-
}
-
}
-
}
-
}
-
-
// 等待所有的线程结束
-
WaitThreadEnd();
-
-
// 显示端口扫描结束时间
-
timenow = _strtime(timebuf);
-
printf("\r\nPortScan End Time: %s", timenow);
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printf("\r\nScan %d Hosts completed. Open %d Ports!\r\n", scannum, scanok);
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}
再来一个连接测试代码:
/********************************************/
/**** 作者::夕君 **/
/**** 时间:2004.04.04 **/
/**** 北京金万维科技 **/
/*******************************************/
/*此函数实现判断m_server的m_port端口是否可以连上,超时限制为nTimeOut秒*/
BOOL ConnectTest(char * m_server,int m_port)
{
struct hostent* host = NULL;
struct sockaddr_in saddr;
unsigned int s = 0;
BOOL ret;
time_t start;
int error;
host = gethostbyname (m_server);
if (host==NULL)return FALSE;
saddr.sin_family = AF_INET;
saddr.sin_port = htons(m_port);
saddr.sin_addr = *((struct in_addr*)host->h_addr);
if( (s=socket(AF_INET, SOCK_STREAM, 0))<0){
return FALSE;
}
fcntl(s,F_SETFL, O_NONBLOCK);
if(connect(s,(struct sockaddr*)&saddr, sizeof(saddr)) == -1) {
if (errno == EINPROGRESS){// it is in the connect process
struct timeval tv;
fd_set writefds;
tv.tv_sec = m_nTimeOut;
tv.tv_usec = 0;
FD_ZERO(&writefds);
FD_SET(s, &writefds);
if(select(s+1,NULL,&writefds,NULL,&tv)>0){
int len=sizeof(int);
//下面的一句一定要,主要针对防火墙
getsockopt(s, SOL_SOCKET, SO_ERROR, &error, &len);
if(error==0) ret=TRUE;
else ret=FALSE;
}else ret=FALSE;//timeout or error happen
}else ret=FALSE;
}
else ret=TRUE;
close(s);
return ret;
}
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