远程终端管理系统

1、服务器端：Lsd.h#ifndef _LSD_H_#define _LSD_H_#include #include #include #include #include #include #include #include #include #include #include #include #define TYPE_LOGIN 0 /鐧诲綍鏁版嵁鍖?#define TYPE_REG 1 /娉唽鏁版嵁鍖?#define TYPE_MSG 2 /娑堟伅鏁版嵁鍖?#define TYPE_HEART 3 /蹇冭烦鏁版嵁鍖?#define TYPE_CMD 4 /鍛戒护鏁版嵁鍖?/#define

2、TYPE_END 5struct packetint data_type;int size;char *data;struct clientint state;char client_name9;char passwd9;struct client *next;int check_login(char *str);struct sockaddr_in ip_port();void client_pthread(int newsock);void heart(char *ipbuf);void browse(int newsock, char *str);struct client *creat

3、_user(struct client *head);void write_user(struct client *head);void Free(struct client *head);int login(int sockfd, char *str);void regis_file(char *str);void registion(int sockfd, char *str);void writebuf(char *string);struct packet unpack(int sockfd, struct packet server);void signal();int execmd

4、(const char *cmd, int newsock);#endifServer.c:#include lsd.htime_t newtime;time_t oldtime;struct client *head = NULL; /鍏眬閾捐澶存寚閽?/* 涓诲嚱鏁?*/int main()int sockfd = -1;int newsock = -1;int ret = -1;int len;char ipbuf20;char buf100;pthread_t tid;struct sockaddr_in serveraddr;struct sockaddr_in cliaddr;he

5、ad = creat_user(head); /寤虹珛鍏眬閾捐newtime = time(NULL);oldtime = time(NULL);/* 寤虹珛濂楁帴瀛?*/sockfd = socket(AF_INET, SOCK_STREAM, 0);if (sockfd 0)perror(socket);exit(0);/* 缁欏鎺瓧璧嬩簣鍦板潃鍜岀鍙?*/serveraddr = ip_port();ret = bind(sockfd, (struct sockaddr *)&serveraddr, sizeof(serveraddr);if (ret 0)perror(bind);ex

6、it(0);/* 缁欓摼鎺帓闃?*/ret = listen(sockfd, 5);if (ret 0)perror(listen);exit(1);/* 鎺彈缃戠粶閾炬帴 */while (1)len = sizeof(cliaddr);newsock = accept(sockfd, (struct sockaddr *)&cliaddr, &len);if (newsock 0)perror(accept);exit(0);/* 灏?杩涘埗缃戠粶鍦板潃杞崲鎴愬瓧绗覆缃戣矾鍦板潃 */inet_ntop(AF_INET, &cliaddr.sin_addr.s_addr, ipbuf, s

7、izeof(ipbuf);/* 鏈嶅姟鍣樉绀哄苟鍐欏叆鏃織鏂囦欢 */time_t t;time(&t);char *tm = ctime(&t);sprintf(buf, IP:%s STATE: Connected TIME: %s, ipbuf, tm);printf(%s, buf);writebuf(buf);ret = pthread_create(&tid, NULL, (void *)client_pthread, (void *)newsock);if (ret 0)perror(pthread_create tid);exit(0);ret = pthread_create

8、(&tid, NULL, (void *)heart, (void *)ipbuf);if (ret client_name) = 0)p-state = 1;break;p = p-next;/* 鏌湅鍦嚎鎵鏈夌敤鎴?*/void browse(int newsock, char *str)int ret = -1;char buf100;struct client *p = head;/* 閬嶅巻閾捐锛屾壘鍑哄湪绾跨敤鎴?*/while (p != NULL)memset(buf, 0, sizeof(buf);if (p-state = 1)sprintf(buf, user: %s s

9、tate: onlinen, p-client_name);ret = write(newsock, buf, strlen(buf);if (ret next;ret = write(newsock, ok, sizeof(ok);if (ret 10)sprintf(buf, IP: %s STATRE: disconnectn, ipbuf);printf(%s, buf);writebuf(buf);break;/* 浠庢枃浠朵腑璇诲彇鐢埛淇伅 鍒涘缓閾捐 */* 杩斿洖鍊硷細 閾捐澶存寚閽?*/struct client *creat_user(struct client *head

10、)struct client *new = NULL;FILE *fp = NULL;fp = fopen(./doc_server/userdata, r);if (fp = NULL)perror(creat fopen);return;while(!feof(fp)new = (struct client *)malloc(sizeof(struct client);if (new = NULL)printf(malloc error.n);fclose(fp);return;/* 鏍煎紡鍖栬鍙栵紝骞跺皢鐘舵佺疆0 */fscanf(fp, %st%sn, new-client_name

11、, new-passwd);new-state = 0;if (head = NULL)new-next = NULL;elsenew-next = head;head = new;fclose(fp);return head;/* 灏嗘敞鍐屼俊鎭啓鍏枃浠?*/void write_user(struct client *head)struct client *p = head;FILE *fp = NULL;fp = fopen(./doc_server/userdata, w);if (fp = NULL)perror(creat fopen);return;while (p != NUL

12、L)fprintf(fp, %st%sn, p-client_name, p-passwd);p = p-next;fclose(fp);/* 閲婃斁绌洪棿 */void Free(struct client *head)struct client *p;struct client *q;p = head;while (p != NULL)q = p-next;free(p);p = q;/* 妫娴嬬櫥褰曟槸鍚垚鍔?*/* 杩斿洖鍊硷細0鐧诲綍鎴愬姛 1褰撳墠鐢埛鍦嚎 2鐢埛鍚嶅拰瀵嗙爜閿欒 */int check_login(char *str)struct client *user = N

13、ULL;int i = 0;int j = 0;char name9;char pwd9;/* 瀛楃涓茬殑鎷嗗垎澶勭悊 */memset(name, 0, sizeof(name);while (stri != /)namei = stri;i+;i = i+1;memset(pwd, 0, sizeof(pwd);while (stri != 0)pwdj = stri;i+;j+;/printf(%s %sn, name, pwd);user = head;while (user != NULL)/* 鍒柇鐢埛鍚嶅瘑鐮佹槸鍚尮閰?*/if (strcmp(name, user-client

14、_name) = 0) & (strcmp(pwd, user-passwd) = 0)/* 鍒柇褰撳墠鐢埛鏄惁宸茬櫥褰?*/if (user-state != 0)return 1;elseuser-state = 1;return 0;user = user-next;return 2;/* 鍚戝鎴风鍙戦佺櫥褰曠姸鎬?*/* 杩斿洖鍊硷細0鎴愬姛 1澶辫触 */int login(int sockfd, char *str)int flag = 0;flag = check_login(str);/* 鐧诲綍鎴愬姛 */if (flag = 0)write(sockfd, yes, str

15、len(yes);return 1;/* 娌湁璇敤鎴?*/else if (flag = 2)write(sockfd, no, strlen(on);return 0;/* 璇敤鎴峰湪绾?*/elsewrite(sockfd, ol, strlen(ol);return 0;/* 娉唽 */void registion(int sockfd, char *str)regis_file(str);write(sockfd, yes, strlen(yes);/* 澶勭悊娉唽淇伅 */void regis_file(char *str)struct client *user = NULL;str

16、uct client *p = NULL;int i = 0;int j = 0;int ret = -1;char name9;char pwd9;user = (struct client *)malloc(sizeof(struct client);/* 瀛楃涓茬殑鎷嗗垎澶勭悊 */memset(name, 0, sizeof(name);while (stri != /)namei = stri;i+;i = i+1;strcpy(user-client_name, name);memset(pwd, 0, sizeof(pwd);while (stri != 0)pwdj = str

17、i;i+;j+;strcpy(user-passwd, pwd);/* 鎻掑叆閾捐澶?*/p = head;head = user;head-next = p;write_user(head); /鍐欏叆鏂囦欢/* 閰嶇疆IP鍜岀鍙彿 */* 杩斿洖鍊硷細瀛樻斁閾炬帴淇伅鐨勭粨鏋勪綋 */struct sockaddr_in ip_port()int fd = -1;int ret = -1;int i = 0;char buf20;char port6;int p;struct sockaddr_in serveraddr;serveraddr.sin_family = AF_INET;me

18、mset(serveraddr.sin_zero, 0, sizeof(serveraddr.sin_zero);fd = open(./doc_server/ip&port, O_RDONLY);if (fd 0)perror(ip_port open file);exit(0);lseek(fd, 12, SEEK_SET);memset(buf, 0, sizeof(buf);while (1)ret = read(fd, &bufi, sizeof(bufi);if (ret 0)perror(ip_port read);exit(0);else if (ret = 0)break;i

19、f (bufi = n)break;i+;bufstrlen(buf)-1 = 0;if (buf0 9)serveraddr.sin_addr.s_addr = INADDR_ANY;elseinet_pton(AF_INET, buf, &serveraddr.sin_addr.s_addr);lseek(fd, 7, SEEK_CUR);ret = read(fd, port, sizeof(port);if (ret 0);int flag_cmd = 0;char path20;/* 杈撳叆鎸囦护鐨勫疄鐜?*/* 杩斿洖鍊硷細 -1鎵澶辫触 */int execmd(const ch

20、ar *cmd, int newsock)pid_t pid;int fd2;char buf100;int ret = -1;ret = pipe(fd); /鍒涘缓鍖垮悕绠亾if (ret 0)perror(execmd pipe);exit(0);signal(17, signal); /瀹夎淇彿if (cmd0 = c) & (cmd1 = d)memset(path, 0, sizeof(path);strcat(path, &cmd3);flag_cmd = 1;/printf(path: %sn, path);if (flag_cmd = 0)pid = fork();if (p

21、id = 0)close(fd0);dup2(fd1, 1);dup2(fd1, 2);ret = execlp(/bin/sh, sh, -c, cmd, NULL);if (ret 0 )close(fd1);while(1)memset(buf, 0, sizeof(buf);ret = read(fd0, buf, sizeof(buf)-1);if (ret 0)perror(read);return -1;ret = write(newsock, buf, strlen(buf);if (ret 0)perror(write);return -1;else if (ret = 0)

22、ret = write(newsock, ok, strlen(ok);if (ret 0)perror(write);return -1;break;if (flag_cmd = 1)pid = fork();if (pid = 0)close(fd0);dup2(fd1, 1);dup2(fd1, 2);chdir(path);ret = execlp(/bin/sh, sh, -c, cmd, NULL);if (ret 0 )close(fd1);while(1)memset(buf, 0, sizeof(buf);ret = read(fd0, buf, sizeof(buf)-1)

23、;if (ret 0)perror(read);return -1;ret = write(newsock, buf, strlen(buf);if (ret 0)perror(write);return -1;else if (ret = 0)ret = write(newsock, ok, strlen(ok);if (ret 0)perror(write);return -1;break; /* 灏嗗瓧绗覆string鍐欏叆鏃織鏂囦欢 */void writebuf(char *string)int fd = -1;int ret = -1;fd = open(./doc_server/

24、data, O_CREAT|O_RDWR|O_APPEND, 0640);if (fd = -1)perror(open data);exit(0);ret = write(fd, string, strlen(string);if (ret 0)perror(write data);exit(0);close(fd);/* 灏嗘暟鎹鍖?*/* 杩斿洖鍊硷細瀛樻斁鏁版嵁鐨勭粨鏋勪綋 */struct packet unpack(int sockfd, struct packet server)int ret = -1;ret = read(sockfd, &server.data_type,

25、sizeof(server.data_type);if (ret 0)perror(unpack read);exit(0);server.data_type = ntohs(server.data_type);ret = read(sockfd, &server.size, sizeof(server.size);if (ret 0)perror(unpack read);exit(0);server.size = ntohs(server.size);server.data = (char *)malloc(server.size+1);server.dataserver.size = 0

26、;ret = read(sockfd, server.data, server.size);if (ret 0)perror(unpack read);exit(0);return server;客户端：Lsd_cli.h：#ifndef _LSD_CLI_H_#define _LSD_CLI_H_#include #include #include #include #include #include #include #include #include #include #include #include #define TYPE_LOGIN 0 #define TYPE_REG 1 #d

27、efine TYPE_MSG 2 #define TYPE_HEART 3 #define TYPE_CMD 4 /#define TYPE_END 5struct packetint data_type;int size;char *data;void Exit(int sockfd);int login_menu();int client_menu();struct sockaddr_in ip_port();int login(int sockfd);void heart(int sockfd);void function(int sockfd);void incmd(int sockf

28、d);void browse(int sockfd);void regis(int sockfd);void pack(int sockfd, struct packet user);struct packet unpack(int sockfd, struct packet server);#endifMenu.c:#include lsd_cli.hint login_menu()int n = 0;int i = 0;system(clear);for (i = 0; i 35; i += 1)printf(-);printf(nnntClient Loginn);printf(t1.

29、Loginn);printf(t2. Registrationn);printf(t3. Quitnnn);for (i = 0; i 35; i += 1)printf(-);printf(nselect cmd: );fflush(stdout);scanf(%d, &n);return n;int client_menu()int n = 0;int i = 0;system(clear);for (i = 0; i 35; i += 1)printf(-);printf(nnntClient Menun);printf(t1. input cmdn);printf(t2. Browse

30、 othersn);printf(t3. Quitnnn);for (i = 0; i 35; i += 1)printf(-);printf(nselect cmd: );fflush(stdout);scanf(%d, &n);return n;Server.c:#include lsd_cli.hchar ipbuf25;char name9;/* 涓诲嚱鏁?*/int main()int n = 0;int a = 0;int flag = 1;int sockfd = -1;int ret = -1;pthread_t tid;struct sockaddr_in cliaddr;/

31、* 寤虹珛濂楁帴瀛?*/sockfd = socket(AF_INET, SOCK_STREAM, 0);if (sockfd 0)perror(sockte);exit(0);/* 鐢宠杩炴帴 */cliaddr = ip_port();ret = connect(sockfd, (struct sockaddr *)&cliaddr, sizeof(cliaddr);if (ret 0)perror(connect);exit(0);/* 鍒涘缓蹇冭烦绾跨 */ret = pthread_create(&tid, NULL, (void *)heart, (void *)sockfd);i

32、f (ret 0)n-;memset(buf, 0, sizeof(buf);/* 鐧诲綍楠岃瘉 */printf(Please input uesrname: );fflush(stdout);scanf(%s, buf);strcpy(name, buf);bufstrlen(buf) = /;printf(Please input password: );fflush(stdout);scanf(%s, &bufstrlen(buf);/* 鏁版嵁鍖呰祴鍊?*/user.data_type = TYPE_LOGIN;user.size = strlen(buf);user.data =

33、(char *)malloc(user.size + 1);user.datauser.size = 0;strcpy(user.data, buf);pack(sockfd, user);memset(readbuf, 0, sizeof(readbuf);ret = read(sockfd, readbuf, sizeof(readbuf)-1);if (ret 0)perror(login read);exit(0);if (strcmp(readbuf, yes) = 0)printf(Login sucessful .n);sleep(1);return 1;else if(strc

34、mp(readbuf, no) = 0)printf(username or password wrong!n);printf(Another %d times to try.n, n);elseprintf(The current user is logged in!n);break;/* 娉唽鍔熻兘鐨勫疄鐜?*/void regis(int sockfd)int n = 3;int ret = -1;char buf20;char pwd_a20;char pwd_b20;char readbuf5;struct packet user;while (1)memset(buf, 0, si

35、zeof(buf);printf(Please input uesrname: );fflush(stdout);scanf(%s, buf);strcpy(name, buf);bufstrlen(buf) = /;printf(Please input password: );fflush(stdout);scanf(%s, pwd_a);printf(Input password again: );fflush(stdout);scanf(%s, pwd_b);/* 涓瀵嗙爜杈撳叆鏄惁涓鑷?*/if (strcmp(pwd_a, pwd_b) = 0)sprintf(&bufstrlen

36、(buf), %s, pwd_a);break;/* 鏁版嵁鍖呰祴鍊?*/user.data_type = TYPE_REG;user.size = strlen(buf);user.data = (char *)malloc(user.size + 1);user.datauser.size = 0;strcpy(user.data, buf);pack(sockfd, user);memset(readbuf, 0, sizeof(readbuf);ret = read(sockfd, readbuf, sizeof(readbuf)-1);if (ret 0)perror(login read);exit(0);if (strcmp(readbuf, yes) = 0)printf(regist sucessfuln);sleep(1);return;elseprintf(Please open the client again to try.n);sleep(5);exit(0);/* 涓昏鍔熻兘鐨勫疄鐜?*/void function(int sockfd)int n = 0;while (1)n = client_menu();switch (n)case 1:/* 杈撳叆鍛戒护琛屽鐞?*/incmd(sockfd);break;cas