linux系统下chatroom程序

#include "client.h" //好友管理模块，实现好友的添加、删除、显示好友列表和在线用户列表。 void friend_manage() { char buf[4096]; char ch; char cmd_str[1024]; int i,j; u_int32_t ID_other; char *buf_ptr; struct message_head m_head; printf_ui(FRIEND_PAGE); while (fgets(cmd_str, 1024, stdin)) { ch = *cmd_str; if (ch != '\n') switch (ch) { case 'a': case 'A': printf("Add a friend!\n"); m_head.ctr = ADD_FRIEND; m_head.dst = 0; m_head.src = ID_self; printf("please input ID you want to Add friend's:"); fflush(stdin); scanf("%u",&ID_other); buf_ptr = buf; *(struct message_head *)buf = m_head; buf_ptr += sizeof(struct message_head); *(u_int32_t*)buf_ptr = ID_other; buf_ptr += sizeof(u_int32_t); tp_send(sock_fd, buf, buf_ptr - buf); u_friend[num_friend_record].ID = ID_other; strncpy(u_friend[num_friend_record].name,"user",20); u_friend[num_friend_record].state = 0; num_friend_record++; break; case 'd': case 'D': printf("Delete a frined!\n"); m_head.ctr = DEL_FRIEND; m_head.dst = 0; m_head.src = ID_self; printf("please input ID you want to delete friend's:"); fflush(stdin); scanf("%u",&ID_other); buf_ptr = buf; *(struct message_head *)buf = m_head; buf_ptr+=12; *(u_int32_t *)buf_ptr = ID_other; buf_ptr += 4; tp_send(sock_fd, buf,buf_ptr-buf); for (i = 0; i<num_friend_record; i++){ if (u_friend[i].ID == ID_other){ for (j=i; j<num_friend_record; j++) u_friend[j] = u_friend[j+1]; num_friend_record--; } } break; case 'l': case 'L': printf("Request friends list!\n"); if (num_friend_record == 0) printf("No friend you have!\n"); printf("ID name\n"); for (i = 0; i < num_friend_record; i++){ printf("%d %s\n",u_friend[i].ID,u_friend[i].name); } printf("order:\n"); break; case 'o': case 'O': printf("Request the list of online users!\n"); m_head.ctr = REQ_ONLINE_LIST; m_head.dst = 0; m_head.src = ID_self; *(struct message_head *)buf = m_head; tp_send(sock_fd, buf,12); break; case 'q': case 'Q': printf_ui(MAIN_PAGE); choose_module(); break; default: printf("Friend_message:Input error! please input again!\n"); printf("order:\n"); } } } //群管理模块，实现创建群、添加群成员、删除群成员等功能 void group_manage() { char buf[4096]; char ch,c; char send_str[256]; char cmd_str[1024]; u_int32_t ID_other; u_int32_t ID_group; char *buf_ptr; char name[256]; struct message_head m_head; printf_ui(GROUP_PAGE); while (fgets(cmd_str, 1024, stdin)) { ch = *cmd_str; if (ch != '\n') switch (ch) { case 'c': case 'C': printf("Create a group.\n"); m_head.ctr = CREATE_GROUP; m_head.dst = 0; m_head.src = ID_self; printf("please input the name of group:"); fflush(stdin); scanf("%s",name); name[strlen(name)-1]='\0'; *(struct message_head *)buf = m_head; buf_ptr = buf; buf_ptr += 12; strncpy(buf_ptr, name,20); buf_ptr += 20; tp_send(sock_fd, buf,buf_ptr - buf); break; case 'a': case 'A': printf("Add group members.\n"); m_head.ctr = ADD_MEMBER; m_head.dst = 0; m_head.src = ID_self; printf("please input the ID of group:"); fflush(stdin); scanf("%u",&ID_group); printf("please input the ID of user:"); fflush(stdin); scanf("%u",&ID_other); buf_ptr = buf; *(struct message_head *)buf = m_head; buf_ptr += MESSAGE_HEAD_LEN; *(u_int32_t *)buf_ptr = ID_group; buf_ptr += U_INT32_T_LEN; *(u_int32_t *)buf_ptr = ID_other; buf_ptr += U_INT32_T_LEN; tp_send(sock_fd, buf, buf_ptr - buf); break; case 'd': case 'D': printf("Delete member of group.\n"); m_head.ctr = DEL_MEMBER; m_head.dst = 0; m_head.src = ID_self; printf("please input the ID of group:"); fflush(stdin); scanf("%u",&ID_group); printf("please input the ID of user:"); fflush(stdin); scanf("%u",&ID_other); buf_ptr = buf; *(struct message_head *)buf = m_head; buf_ptr += 12; *(u_int32_t *)buf_ptr = ID_group; buf_ptr += 4; *(u_int32_t *)buf_ptr = ID_other; buf_ptr += 4; tp_send(sock_fd,buf,buf_ptr - buf); break; case 'm': case 'M': printf("Request the list of group member.\n"); m_head.ctr = REQ_GROUP_MEMBER; m_head.dst = 0; m_head.src = ID_self; printf("please input the ID of group:"); fflush(stdin); scanf("%u",&ID_group); buf_ptr = buf; *(struct message_head *)buf = m_head; buf_ptr += MESSAGE_HEAD_LEN; *(u_int32_t *)buf_ptr = ID_group; buf_ptr += U_INT32_T_LEN; tp_send(sock_fd, buf, buf_ptr - buf); break; case 'i': case 'I': printf("the group message.\n"); m_head.ctr = SEND_GROUP_INFO; printf("please input the group ID you want to send message:"); fflush(stdin); scanf("%u",&ID_group); m_head.dst = ID_group; m_head.src = ID_self; buf_ptr = buf; *(struct message_head *)buf = m_head; buf_ptr += 12; printf("please input message:\n"); c = getchar(); fgets(send_str,512,stdin); send_str[strlen(send_str)-1]='\0'; strncpy(buf_ptr, send_str, 512); buf_ptr += 512; tp_send(sock_fd,buf,buf_ptr - buf); printf("order:\n"); break; case 'q': case 'Q':