TCP实现英英词典（多线程）（项目设计）新手思维
2024-07-04 08:12:24
server
main函数
#include <stdio.h>
#include<sys/types.h>
#include<sys/socket.h>
#include<strings.h>
#include<arpa/inet.h>
#include<unistd.h>
#include<sys/select.h>
#include<sqlite3.h>
#include<string.h>
#include<stdlib.h>
#include <pthread.h>
#include"create_server.h"
#include"login.h"
#include"search.h"
int server_init(char *,unsigned short,int);
int login(int,fd_set);
int search（int);
void *thread_link(void *arg)
{int ret=0;int rws=*(int *)arg;ret=login(rws);if(ret==-1){close(rws);return NULL;} //errorelse if(ret==1){close(rws);return NULL;} //login quitelse if(ret==0){ret=search(rws);if(ret==-1){printf("search");close(rws);return NULL;}} //login successclose(rws);pthread_exit(NULL);
}
int main(int argc, char *argv[])
{ int sockfd,ret;sockfd=server_init("192.168.2.41",7878,1024);if(sockfd==-1){printf("server_init error\n");return -1;}printf("server create success\n");int i;//等待连接
#define SIZE 1024char recvbuf[SIZE]={0},sendbuf[SIZE]={0};while(1){ struct sockaddr_in caddr;bzero(&caddr,sizeof(caddr));socklen_t clen=sizeof(caddr);int rws=accept(sockfd,(struct sockaddr *)&caddr,&clen);if(rws==-1){perror("accept");close(sockfd);return -1;}printf("some usr join in success\n");strcpy(sendbuf,"注册/登录/退出输入：0/1/quit");ret=send(rws,sendbuf,SIZE,0);if(ret==-1){perror("send");close(rws);break;} //主线程接受连接pthread_t tid;if(0 != pthread_create(&tid,NULL,thread_link,(void *)&rws)){perror("pthread_create");break;} //创建子线程处理客户端请求pthread_detach(tid);}
close(sockfd);
return 0;
} create_server函数
#include<stdio.h>
#include<sys/types.h>
#include<sys/socket.h>
#include<strings.h>
#include<arpa/inet.h>
#include<unistd.h>
#include"create_server.h"
int server_init(char *ipaddr,unsigned short port,int backlog)
{int ret,sockfd;sockfd=socket(AF_INET,SOCK_STREAM,0);if(sockfd==-1){perror("socket");return -1;} //创建网络套接字struct sockaddr_in saddr;bzero(&saddr,sizeof(saddr));saddr.sin_family=AF_INET;saddr.sin_port=htons(port);saddr.sin_addr.s_addr=(ipaddr==NULL)?htonl(INADDR_ANY):inet_addr(ipaddr);socklen_t slen=sizeof(saddr);ret=bind(sockfd,(struct sockaddr *)&saddr,slen);//绑定if(ret==-1){perror("bind");close(sockfd);return -1;}ret=listen(sockfd,backlog); //监听if(ret==-1){perror("listen");close(sockfd);return -1;}return sockfd;
}
login 函数
#include <stdio.h>
#include<sys/types.h>
#include<sys/socket.h>
#include<strings.h>
#include<arpa/inet.h>
#include<unistd.h>
#include<sys/select.h>
#include<sqlite3.h>
#include<string.h>
#include"login.h"
#include"search.h"
int login(int i)
{
#define SIZE 1024int ret,flag,flag1,flag2,flag3,falg4,flag5,flag6,len;sqlite3 *db=NULL;ret = sqlite3_open("server.usr",&db);if(ret!=SQLITE_OK){printf("%s\n",sqlite3_errmsg(db));return -1;}char *errmsg = NULL;char **resultp;int nrow;int ncolumn;ret = sqlite3_get_table(db,"create table usr (name char [10],passwd char [10]);",&resultp,&nrow,&ncolumn,&errmsg);if(ret==-1){printf("sqlite3_get_table error\n");return -1;} //建好用户信息表char recvbuf[SIZE]={0},sendbuf[SIZE]={0},namebuf[SIZE]={0},passwdbuf[SIZE]={0},buf[10]={0};
flag5:bzero(recvbuf,SIZE);ret=recv(i,recvbuf,SIZE,0);if(ret==-1){perror("recv");close(i);sqlite3_close(db);return -1;}if(recvbuf[0]=='0')//注册{
flag6:bzero(sendbuf,SIZE);strcpy(sendbuf,"请输入你的账号id 4~10个字符");ret=send(i,sendbuf,SIZE,0);if(ret==-1){perror("send");close(i);sqlite3_close(db);return -1;}bzero(recvbuf,SIZE);ret=recv(i,recvbuf,SIZE,0);if(ret==-1){perror("recv");close(i);sqlite3_close(db);return -1;}len=strlen(recvbuf);if(len<4||len>10){strcpy(sendbuf,"id长度不合适，请重新输入id");ret=send(i,sendbuf,SIZE,0);if(ret==-1){perror("send");close(i);sqlite3_close(db);return -1;}goto flag6;}else{strcpy(buf,recvbuf);sprintf(sendbuf,"select * from usr where name=\"%s\";",buf);if(SQLITE_OK!=sqlite3_get_table(db,sendbuf,&resultp,&nrow,&ncolumn,&errmsg)){printf("sqlite3_get_table:%s\n",errmsg);close(i);sqlite3_close(db);return -1;}if(nrow>0){strcpy(sendbuf,"id 重复 请重新注册！");ret=send(i,sendbuf,SIZE,0);if(ret==-1){perror("send");close(i);sqlite3_close(db);return -1;}goto flag6;}else{if(strcmp(recvbuf,"quit")==0)//usr want to quit really? {
flag :strcpy(sendbuf," 你的账号是：’quit‘，还是你想要退出？扣0/1");ret=send(i,sendbuf,SIZE,0);if(ret==-1){perror("send");close(i);sqlite3_close(db);return -1;}ret=recv(i,recvbuf,SIZE,0);if(ret==-1){perror("recv");close(i);sqlite3_close(db);return -1;}if(recvbuf[0]=='1'){close(i);return 1;}else if(recvbuf[0]=='0'){strcpy(namebuf,"quit");}else{strcpy(sendbuf,"无效字符，重新输入");ret=send(i,sendbuf,SIZE,0);if(ret==-1){perror("send");close(i);sqlite3_close(db);return -1;}goto flag;}}else{strcpy(namebuf,recvbuf);}
flag7:strcpy(sendbuf,"现在你可以设置你的密码，4～10个字符 !");ret=send(i,sendbuf,SIZE,0);if(ret==-1){perror("send");close(i);sqlite3_close(db);return -1;}ret=recv(i,recvbuf,SIZE,0);if(ret==-1){perror("recv");close(i);sqlite3_close(db);return -1;}len=strlen(recvbuf);if(len<4||len>10){strcpy(sendbuf,"密码长度不合适，请重新输入密码");ret=send(i,sendbuf,SIZE,0);if(ret==-1){perror("send");close(i);sqlite3_close(db);return -1;}goto flag7;}else{if(strcmp(recvbuf,"quit")==0)//判断用户密码是quit 还是想退出{
flag1:strcpy(sendbuf,"你的密码是‘quit’，还是你想要退出？扣0/1");ret=send(i,sendbuf,SIZE,0);\if(ret==-1){perror("send");close(i);sqlite3_close(db);return -1;}ret=recv(i,recvbuf,SIZE,0);if(ret==-1){perror("recv");close(i);sqlite3_close(db);return -1;}if(recvbuf[0]=='1')//退出{close(i);return 1;}else if(recvbuf[0]=='0')//密码四位是quit{strcpy(passwdbuf,"quit");}else {strcpy(sendbuf,"无效字符，重新输入：0/1\n");//没有输入0/1ret=send(i,sendbuf,SIZE,0);if(ret==-1){perror("send");close(i);sqlite3_close(db);return -1;}goto flag1;}}else {strcpy(passwdbuf,recvbuf);}//到此用户账号与密码保存在namebuf/passwdbuf中strcpy(recvbuf,"insert into usr values (\"");strcat(recvbuf,namebuf);strcpy(sendbuf,"\",\"");strcat(recvbuf,sendbuf);strcat(recvbuf,passwdbuf);strcpy(sendbuf,"\");");strcat(recvbuf,sendbuf);if(SQLITE_OK!=sqlite3_get_table(db,recvbuf,&resultp,&nrow,&ncolumn,&errmsg)){printf("sqlite_get_table:%s\n",errmsg);close(i);sqlite3_close(db);return -1;} //注册成功strcpy(sendbuf,"恭喜你，注册成功！你的账号信息如下 :");strcpy(his[i].name,namebuf);strcpy(his[i].pass,passwdbuf);ret=send(i,sendbuf,SIZE,0);if(ret==-1){perror("send");close(i);sqlite3_close(db);return -1;}ret=send(i,namebuf,SIZE,0);if(ret==-1){perror("send");close(i);sqlite3_close(db);return -1;}ret=send(i,passwdbuf,SIZE,0);if(ret==-1){perror("send");close(i);sqlite3_close(db);return -1;}//将信息发给客户端进行确认注册成功；}}}}else if(recvbuf[0]=='1')//登陆{
flag4 :strcpy(sendbuf,"请输入你的账号：");ret=send(i,sendbuf,SIZE,0);if(ret==-1){perror("send");close(i);sqlite3_close(db);return -1;}ret=recv(i,recvbuf,SIZE,0);if(ret==-1){perror("recv");close(i);sqlite3_close(db);return -1;}if(strcmp(recvbuf,"quit")==0){
flag2 :strcpy(sendbuf,"你的账号是‘quit’还是你想退出: 0/1");send(i,sendbuf,SIZE,0);if(ret==-1){perror("send");close(i);sqlite3_close(db);return -1;}recv(i,recvbuf,SIZE,0);if(ret==-1){perror("recv");close(i);sqlite3_close(db);return -1;}if(recvbuf[0]=='1'){close(i);return 1;}else if(recvbuf[0]=='0'){strcpy(namebuf,"quit");}else{strcpy(sendbuf,"无效字符，重新输入：0/1");send(i,sendbuf,SIZE,0);if(ret==-1){perror("send");close(i);sqlite3_close(db);return -1;}goto flag2;}}else {strcpy(namebuf,recvbuf);}strcpy(sendbuf,"输入你的密码：");send(i,sendbuf,SIZE,0);if(ret==-1){perror("send");close(i);sqlite3_close(db);return -1;}recv(i,recvbuf,SIZE,0);if(ret==-1){perror("recv");close(i);sqlite3_close(db);return -1;}if(strcmp(recvbuf,"quit")==0){
flag3:strcpy(sendbuf,"你的密码是‘quit’，还是你想退出:扣0/1");send(i,sendbuf,SIZE,0);if(ret==-1){perror("send");close(i);sqlite3_close(db);return -1;}recv(i,recvbuf,SIZE,0);if(ret==-1){perror("recv");close(i);sqlite3_close(db);return -1;}if(recvbuf[0]=='1'){close(i);return 1;}else if(recvbuf[0]=='0'){strcpy(passwdbuf,"quit");}else{strcpy(sendbuf,"无效字符，重新输入：0/1");send(i,sendbuf,SIZE,0);if(ret==-1){perror("send");close(i);sqlite3_close(db);return -1;}goto flag3;}}else{strcpy(passwdbuf,recvbuf);}//登陆信息存在namebuf/passwdbufstrcpy(recvbuf,"select * from usr where name=\"");strcat(recvbuf,namebuf);strcpy(sendbuf,"\"and passwd =\"");strcat(recvbuf,sendbuf);strcat(recvbuf,passwdbuf);strcpy(sendbuf,"\";");strcat(recvbuf,sendbuf);if(SQLITE_OK!=sqlite3_get_table(db,recvbuf,&resultp,&nrow,&ncolumn,&errmsg)){printf("sqlite3_get_table:%s\n",errmsg);close(i);sqlite3_close(db);return -1;}if(nrow<1){strcpy(sendbuf,"账户信息有误，请重新输入");send(i,sendbuf,SIZE,0);if(ret==-1){perror("send");close(i);sqlite3_close(db);return -1;}goto flag4;}strcpy(his[i].name,namebuf);strcpy(his[i].pass,passwdbuf);//log in success}else if(strcmp(recvbuf,"quit")==0){close(i);return 1;}else{strcpy(sendbuf,"请输入0/1来决定选项");ret=send(i,sendbuf,SIZE,0);if(ret==-1){perror("send");close(i);sqlite3_close(db);return -1;}goto flag5;}sqlite3_close(db);return 0;
}
search函数
#include <stdio.h>
#include<sys/types.h>
#include<sys/socket.h>
#include<arpa/inet.h>
#include<unistd.h>
#include<sys/select.h>
#include<sqlite3.h>
#include<string.h>
#include<strings.h>
#include<time.h>
#include"search.h"
#define SIZE 1024
int search(int i)
{int ret,o,flag;char recvbuf[SIZE]={0},sendbuf[SIZE]={0},rowbuf[SIZE]={0};strcpy(sendbuf,"--------------登录成功----------------!");ret=send(i,sendbuf,SIZE,0);if(ret==-1){perror("send");close(i);return -1;}
flag:strcpy(sendbuf,"---------‘Q’退出---‘H‘历史------------");ret=send(i,sendbuf,SIZE,0);if(ret==-1){close(i);return -1;}strcpy(sendbuf,"---------------英英词典---------------");send(i,sendbuf,SIZE,0);if(ret==-1){close(i);return -1;}while(1){FILE *fp=fopen("dict.txt","r");if(fp==NULL){perror("fopen");return -1;}ret=recv(i,recvbuf,SIZE,0);if(ret==-1){perror("recv");close(i);return -1;}if(strcmp(recvbuf,"Q")==0){strcpy(sendbuf,"-----------BYE BYE !------------");ret=send(i,sendbuf,SIZE,0);if(ret==-1){close(i);return -1;}close(i);return 1;}else if(strcmp(recvbuf,"H")==0){strcpy(sendbuf,"-------------HISTORY-------------------");sleep(1);ret=send(i,sendbuf,SIZE,0);if(ret==-1){close(i);return -1;}for(int j=0;j<5;j++){sprintf(sendbuf,"TIME-----%s",his[i].time[j]);ret=send(i,sendbuf,SIZE,0);if(ret==-1){close(i);return -1;}sprintf(sendbuf,"WORD----%s",his[i].word[j]);ret=send(i,sendbuf,SIZE,0);if(ret==-1){close(i);return -1;}}goto flag;}else{sqlite3 *db=NULL;ret = sqlite3_open("server.usr",&db);if(ret!=SQLITE_OK){printf("%s\n",sqlite3_errmsg(db));return -1;}char *errmsg = NULL;char **resultp;int nrow=0;int ncolumn=0;recvbuf[strlen(recvbuf)]='\0';strcpy(sendbuf,"select * from dict where word=\"");strcat(sendbuf,recvbuf);strcat(sendbuf,"\";");ret=sqlite3_get_table(db,sendbuf,&resultp,&nrow,&ncolumn,&errmsg);if(ret!=SQLITE_OK){printf("sqlite_get_table:%s\n",errmsg);close(i);sqlite3_close(db);return -1;}if(nrow>0){strcpy(sendbuf,resultp[3]);time_t timep;struct tm *t;time(&timep);t=localtime(&timep);sprintf(rowbuf,"%02d:%02d:%02d",t->tm_hour,t->tm_min,t->tm_sec);strcpy(his[i].time[o],rowbuf);strcpy(his[i].word[o],recvbuf);o++;if(o==4){o=0;}}else{strcpy(sendbuf,"--------------未找到！--------------");}sleep(1);ret=send(i,sendbuf,SIZE,0);if(ret==-1){perror("send");return -1;}}}
}
头文件.H
create_server.h
#ifndef CREATE_SERVER_H
#define CREATE_SERVER_H
#include<stdio.h>
#include<sys/types.h>
#include<sys/socket.h>
#include<strings.h>
#include<arpa/inet.h>
#include<unistd.h>
int server_init(char *,unsigned short,int);
#endif
--------------------------------------------------------------
login.h
#ifndef LOGIN_H
#define LOGIN_H
#include<stdio.h>
#include<sys/types.h>
#include<sys/socket.h>
#include<strings.h>
#include<arpa/inet.h>
#include<unistd.h>
#include<sys/select.h>
#include<sqlite3.h>
#include<string.h>
#include"search.h"
int login(int);
#endif--------------------------------------------------------------search.h
#ifndef SEARCH_H
#define SEARCH_H
#include"login.h"
typedef struct
{char name[20];char pass[20];char time[5][20];char word[5][20];
}history;
history his[1024];
int search(int);
#define SIZE 1024
#endifmakefile
server_app:create_server.o login.o search.o main.o gcc create_server.o login.o search.o main.o -lsqlite3 -lpthread -o server_app
create_server.o:./create_server.cgcc -c create_server.c -I ./ -o create_server.o
login.o: ./login.cgcc -c login.c -I ./ -o login.o
search.o: ./search.cgcc -c search.c -I ./ -o search.o
main.o: ./main.cgcc -c main1.c -I ./ -o main.o
clean:rm *.o
user
client函数
#include <stdio.h>
#include<sys/types.h>
#include<sys/socket.h>
#include<strings.h>
#include<arpa/inet.h>
#include<unistd.h>
#include<sys/select.h>
#include<sqlite3.h>
#include<string.h>
#include<strings.h>int link_server(char *ipaddr,unsigned short port)
{int ret,sockfd;sockfd=socket(AF_INET,SOCK_STREAM,0);if(sockfd==-1){perror("socket");return -1;}struct sockaddr_in saddr;bzero(&saddr,sizeof(saddr));saddr.sin_family=AF_INET;saddr.sin_port=htons(port);saddr.sin_addr.s_addr=inet_addr(ipaddr);socklen_t slen=sizeof(saddr);ret=connect(sockfd,(struct sockaddr*)&saddr,slen);if(ret==-1){perror("connect");close(sockfd);return -1;}return sockfd;
}
int main()
{int ret,sockfd;sockfd=link_server("192.168.2.41",7878);if(sockfd==-1){printf("server error\n");return -1;}printf("-------------------------------------------\n");printf("| ENG--ENG DIGTIONARY!!! |\n");printf("| / \\ |\n");printf("| || 广告位出租 || |\n");printf("| \\ / |\n");printf("| ----------WELCOME!-------- |\n");printf("-------------------------------------------\n");printf("------------------SCD----------------------\n");fd_set rfds,fds;FD_ZERO(&rfds);FD_SET(0,&rfds);FD_SET(sockfd,&rfds);int nfds=sockfd+1;
#define SIZE 1024char recvbuf[SIZE]={0},sendbuf[SIZE]={0};while(1){fds=rfds;ret=select(nfds,&fds,NULL,NULL,NULL);if(ret==-1){perror("select");close(sockfd);return -1;}if(FD_ISSET(0,&fds)){fgets(sendbuf,SIZE,stdin);sendbuf[strcspn(sendbuf,"\n")]='\0';ret=send(sockfd,sendbuf,SIZE,0);if(ret==-1){perror("send");close(sockfd);}}if (FD_ISSET(sockfd,&fds)){bzero(recvbuf,SIZE);ret=recv(sockfd,recvbuf,SIZE,0);if(ret==-1){perror("recv");close(sockfd);return -1;}if(ret==0){break;}printf("%s\n",recvbuf);}}return 0;
}
结果展示：
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