1.c语言代码2.编译命令另外的程序 检测端口程序的编译命令 ports.c gcc port_tool.c -o port_tool.exe -lws2_32 -lpsapi -static3. port_tool.c 代码#include stdio.h #include stdlib.h #include string.h #include winsock2.h #include windows.h #include tlhelp32.h #include ws2tcpip.h #include shellapi.h #pragma comment(lib, ws2_32.lib) #pragma comment(lib, user32.lib) #pragma comment(lib, shell32.lib) // 颜色定义 #define COLOR_RESET 7 #define COLOR_GREEN 10 #define COLOR_YELLOW 14 #define COLOR_CYAN 11 #define COLOR_RED 12 #define COLOR_GRAY 8 void SetColor(int color) { HANDLE hConsole GetStdHandle(STD_OUTPUT_HANDLE); SetConsoleTextAttribute(hConsole, color); } // 检查是否管理员 BOOL IsRunningAsAdmin() { BOOL isAdmin FALSE; PSID adminGroup NULL; SID_IDENTIFIER_AUTHORITY ntAuthority SECURITY_NT_AUTHORITY; if (AllocateAndInitializeSid(ntAuthority, 2, SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_ADMINS, 0, 0, 0, 0, 0, 0, adminGroup)) { CheckTokenMembership(NULL, adminGroup, isAdmin); FreeSid(adminGroup); } return isAdmin; } // 自动提权 void ElevateSelf() { char exePath[MAX_PATH]; GetModuleFileName(NULL, exePath, MAX_PATH); ShellExecute(NULL, runas, exePath, NULL, NULL, SW_SHOWNORMAL); exit(0); } // 执行CMD命令并获取输出 char* ExecuteCommand(const char* cmd) { char buffer[4096] {0}; char* result (char*)malloc(8192); if (!result) return NULL; result[0] \0; FILE* pipe _popen(cmd, r); if (!pipe) { free(result); return NULL; } while (fgets(buffer, sizeof(buffer), pipe) ! NULL) { strcat(result, buffer); } _pclose(pipe); return result; } // 通过PID获取进程名 char* GetProcessNameByPID(DWORD pid) { static char processName[256] 未知进程; HANDLE hSnapshot CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0); if (hSnapshot INVALID_HANDLE_VALUE) { return processName; } PROCESSENTRY32 pe; pe.dwSize sizeof(PROCESSENTRY32); if (Process32First(hSnapshot, pe)) { do { if (pe.th32ProcessID pid) { strcpy(processName, pe.szExeFile); char* dot strstr(processName, .exe); if (dot) *dot \0; CloseHandle(hSnapshot); return processName; } } while (Process32Next(hSnapshot, pe)); } CloseHandle(hSnapshot); return processName; } // 端口信息结构体 typedef struct { BOOL isTCP; BOOL isUDP; DWORD pid; char processName[256]; } PortInfo; // 检测端口 PortInfo DetectPort(int port) { PortInfo info {FALSE, FALSE, 0, 未知进程}; char cmd[256]; char* output NULL; sprintf(cmd, netstat -ano | findstr \:%d \, port); output ExecuteCommand(cmd); if (output strlen(output) 0) { char* line strtok(output, \n); while (line) { if (strstr(line, UDP)) { info.isUDP TRUE; char* lastSpace strrchr(line, ); if (lastSpace) { while (*lastSpace ) lastSpace; info.pid atoi(lastSpace); } } else if (strstr(line, LISTENING) || strstr(line, ESTABLISHED)) { info.isTCP TRUE; char* lastSpace strrchr(line, ); if (lastSpace) { while (*lastSpace ) lastSpace; info.pid atoi(lastSpace); } } if (info.pid 0) { char* name GetProcessNameByPID(info.pid); strcpy(info.processName, name); } line strtok(NULL, \n); } } free(output); // 主动探测 if (!info.isTCP !info.isUDP) { WSADATA wsaData; if (WSAStartup(MAKEWORD(2, 2), wsaData) 0) { SOCKET sock; struct sockaddr_in addr; addr.sin_family AF_INET; addr.sin_port htons(port); addr.sin_addr.s_addr inet_addr(127.0.0.1); // TCP测试 sock socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); if (sock ! INVALID_SOCKET) { u_long mode 1; ioctlsocket(sock, FIONBIO, mode); connect(sock, (struct sockaddr*)addr, sizeof(addr)); fd_set fdSet; FD_ZERO(fdSet); FD_SET(sock, fdSet); struct timeval timeout; timeout.tv_sec 0; timeout.tv_usec 500000; if (select(0, NULL, fdSet, NULL, timeout) 0) { info.isTCP TRUE; } closesocket(sock); } // UDP测试 sock socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); if (sock ! INVALID_SOCKET) { struct sockaddr_in localAddr; localAddr.sin_family AF_INET; localAddr.sin_port htons(port); localAddr.sin_addr.s_addr INADDR_ANY; if (bind(sock, (struct sockaddr*)localAddr, sizeof(localAddr)) ! 0) { info.isUDP TRUE; char cmd2[256]; sprintf(cmd2, netstat -ano | findstr \UDP\ | findstr \:%d \, port); char* out2 ExecuteCommand(cmd2); if (out2 strlen(out2) 0) { char* lastSpace strrchr(out2, ); if (lastSpace) { while (*lastSpace ) lastSpace; info.pid atoi(lastSpace); if (info.pid 0) { char* name GetProcessNameByPID(info.pid); strcpy(info.processName, name); } } } free(out2); } closesocket(sock); } WSACleanup(); } } return info; } // 结束进程 BOOL KillProcess(DWORD pid) { HANDLE hProcess OpenProcess(PROCESS_TERMINATE, FALSE, pid); if (hProcess NULL) { return FALSE; } BOOL result TerminateProcess(hProcess, 0); CloseHandle(hProcess); return result; } // 主程序 int main() { // 自动提权 if (!IsRunningAsAdmin()) { MessageBox(NULL, 端口检测工具需要管理员权限才能正常工作\n点击确定后自动请求提权..., 权限提示, MB_OK | MB_ICONINFORMATION); ElevateSelf(); return 0; } SetColor(COLOR_CYAN); printf(\n); printf( 端口检测工具 v2.0 (C语言版)\n); printf(\n\n); SetColor(COLOR_RESET); WSADATA wsaData; WSAStartup(MAKEWORD(2, 2), wsaData); while (1) { SetColor(COLOR_CYAN); printf(请输入端口号 (输入 0 退出): ); SetColor(COLOR_RESET); char input[32]; fgets(input, sizeof(input), stdin); input[strcspn(input, \n)] 0; int port atoi(input); if (port 0) { break; } if (port 1 || port 65535) { SetColor(COLOR_RED); printf(❌ 无效端口号请输入 1-65535 之间的数字\n\n); SetColor(COLOR_RESET); continue; } printf(\n 正在检测端口 %d...\n\n, port); PortInfo info DetectPort(port); SetColor(COLOR_GREEN); printf( 检测结果 \n); if (info.isTCP info.isUDP) { SetColor(COLOR_GREEN); printf(✅ 端口 %d: TCP UDP 都在使用\n, port); } else if (info.isTCP) { SetColor(COLOR_GREEN); printf(✅ 端口 %d: TCP 协议\n, port); } else if (info.isUDP) { SetColor(COLOR_GREEN); printf(✅ 端口 %d: UDP 协议\n, port); } else { SetColor(COLOR_GRAY); printf(❌ 端口 %d: 未检测到任何服务\n, port); SetColor(COLOR_RESET); printf(\n\n按任意键继续...); getchar(); printf(\n); continue; } if (info.pid 0) { SetColor(COLOR_YELLOW); printf( 占用进程: %s (PID: %d)\n, info.processName, info.pid); SetColor(COLOR_RESET); printf(\n是否结束该进程以释放端口? (y/n): ); char choice[8]; fgets(choice, sizeof(choice), stdin); if (choice[0] y || choice[0] Y) { if (KillProcess(info.pid)) { SetColor(COLOR_GREEN); printf(✅ 已结束进程 %s (PID: %d)端口已释放\n, info.processName, info.pid); SetColor(COLOR_RESET); } else { SetColor(COLOR_RED); printf(❌ 结束进程失败请检查是否有足够权限\n); SetColor(COLOR_RESET); } } } else { SetColor(COLOR_GRAY); printf( 端口未被占用无需关闭\n); SetColor(COLOR_RESET); } SetColor(COLOR_GREEN); printf(\n); SetColor(COLOR_RESET); printf(\n按任意键继续...); getchar(); printf(\n\n); } WSACleanup(); SetColor(COLOR_CYAN); printf(感谢使用\n); SetColor(COLOR_RESET); return 0; }