linux开发板C实现ftp客户端
由于需要和windows服务器连接，使用的是ftp通信协议，windows上使用filezilla作为服务器
关于filazilla参考前面记录的 https://www.cnblogs.com/ChenChangXiong/p/11001004.html
会有linux开发板的ftp工具，但是实际上也是socket，所有使用socket就可以做到ftp文件传输，这样也可以根据实际情况比较好的控制，所以我 使用C实现了ftp的客户端程序。
以下是登陆代码代码
| int login() | |
| { | |
| //初始化端口信息 | |
| struct sockaddr_in serv_addr; | |
| char senddate,recvdate; | |
| char sendline[MAXSIZE],recvline[MAXSIZE]; | |
| struct hostent *host; | |
| //获取hostent中相关参数 | |
| char name[MAXSIZE],password[MAXSIZE]; | |
| printf("please enter the hostname\n"); | |
| printf("ftp->"); | |
| fflush(stdout); | |
| //创建socket | |
| if( (control_sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0){ | |
| printf("create socket error: %s(errno: %d)\n", strerror(errno),errno); | |
| return -1 ; | |
| //exit(0); | |
| } | |
| memset(&serv_addr, 0, sizeof(serv_addr)); | |
| serv_addr.sin_family=AF_INET; | |
| serv_addr.sin_port=htons(SERV_PORT); | |
| serv_addr.sin_addr.s_addr=INADDR_ANY; | |
| //点分十进制转化为二进制整数地址 | |
| if(inet_pton(AF_INET, FTP_CONNECT_IP, &serv_addr.sin_addr) <= 0){ | |
| printf("inet_pton error for %s\n", FTP_CONNECT_IP); | |
| close(control_sockfd); | |
| return -1 ; | |
| //exit(0); | |
| } | |
| //调用connect函数发起连接 | |
| if((connect(control_sockfd,(SA*)&serv_addr,sizeof(serv_addr)))<0) | |
| { | |
| printf("连接失败\n"); | |
| login_yes=0; | |
| } | |
| ///printf("连接到 %d--->>>/n",&serv_addr.sin_addr); | |
| recvdate=recv(control_sockfd,recvline,sizeof(recvline),0); | |
| if(recvdate==-1) | |
| { | |
| printf("recvdate is connect error/n"); | |
| login_yes=0; | |
| } | |
| else if(strncmp(recvline,"220",3)==0) | |
| { | |
| printf("220 连接成功，请输入用户名\n"); | |
| login_yes=1; | |
| } | |
| else | |
| { | |
| printf("220 connect is error!"); | |
| login_yes=0; | |
| } | |
| //ftp用户登录主体部分 | |
| int sendbytes,recvbytes; | |
| zeromery(name,1024); | |
| zeromery(password,1024); | |
| zeromery(recvline,1024); | |
| zeromery(sendline,1024); | |
| //printf("自动登录 用户名：windows-ftp\n") ; | |
| strcat(sendline,"USER "); | |
| strcat(sendline,"windows-ftp"); | |
| strcat(sendline,"\r\n"); | |
| printf("--->%s\n",sendline); | |
| sendbytes=send(control_sockfd,sendline,strlen(sendline),0); | |
| if(sendbytes==-1) | |
| { | |
| printf("send is wrong\n"); | |
| login_yes=0; | |
| } | |
| recvbytes=recv(control_sockfd,recvline,sizeof(recvline),0); | |
| if(strncmp(recvline,"331",3)==0) | |
| { | |
| //printf("331 please specify the password./n"); | |
| printf("331 请输入密码\n"); | |
| } | |
| else | |
| { | |
| printf("recv date is error./n"); | |
| login_yes=0; | |
| } | |
| zeromery(sendline,1024); | |
| zeromery(recvline,1024); | |
| sleep(1) ; | |
| printf("密码：111111\n") ; | |
| strcat(sendline,"PASS "); | |
| strcat(sendline,"111111"); | |
| strcat(sendline,"\r\n"); | |
| printf("--->%s\n",sendline); | |
| sendbytes=send(control_sockfd,sendline,strlen(sendline),0); | |
| if(sendbytes==-1) | |
| { | |
| printf("pass send is error\n"); | |
| login_yes=0; | |
| } | |
| recvbytes=recv(control_sockfd,recvline,sizeof(recvline),0); | |
| if(strncmp(recvline,"230",3)==0) | |
| { | |
| printf("登录成功!\n"); | |
| login_yes=1; | |
| } | |
| else | |
| { | |
| printf("pass recv is error\n"); | |
| login_yes=0; | |
| } | |
| if(login_yes==0) | |
| { | |
| close(control_sockfd); //登陆失败 关闭接口 | |
| return -1 ; | |
| } | |
| //进入到对应子路径 | |
| //////ftp_changdir("001",control_sockfd); //cd | |
| return control_sockfd; | |
| } | |
实现了登陆，就意味着可以和service进行通信了，接下来的事情九四read 和 write 或者send和rev的事情。
| #include "client_ftp.h" | |
| static char First_login = 0 ; | |
| //int main(int argc,char **argv) | |
| //{ | |
| // printf("ftp>"); | |
| // char command[MAXSIZE]; | |
| // char*cmd; | |
| // login(); | |
| // if(login_yes==1) | |
| // { | |
| // while(1) | |
| // { | |
| //comm: | |
| // sleep(1); | |
| // printf("ftp>"); | |
| // zeromery(command,1024); | |
| // scanf("%s",command); | |
| // cmd=command; | |
| // while(*(cmd)==' ') | |
| // cmd++; | |
| // if(strncmp(cmd,"pwd",3)==0) | |
| // { | |
| // ftp_pwd(control_sockfd); | |
| // } | |
| // if(strncmp(cmd,"mkdir",5)==0) | |
| // { | |
| // char path[60]; | |
| // zeromery(path,60); | |
| // printf("创建的路径名: "); | |
| // scanf("%s",path); | |
| // printf("s\n",path); | |
| // ftp_creat_mkd(path,control_sockfd); | |
| // } | |
| // if(strncmp(cmd,"back",4)==0) | |
| // { | |
| // ftp_back(control_sockfd); | |
| // ftp_pwd(control_sockfd); | |
| // } | |
| // if(strncmp(cmd,"cd",2)==0) | |
| // { | |
| // int i; | |
| // char path[60]; | |
| // zeromery(path,60); | |
| // printf("要到的路径："); | |
| // scanf("%s",path); | |
| // printf("%s\n",path); | |
| // ftp_changdir(path,control_sockfd); | |
| // } | |
| // if(strncmp(cmd,"get",3)==0) | |
| // { | |
| // ftp_pwd(control_sockfd); | |
| // ftp_download(control_sockfd); | |
| // } | |
| // if(strncmp(cmd,"up",3)==0) | |
| // { | |
| // ftp_pwd(control_sockfd); | |
| // ftp_up(control_sockfd); | |
| // } | |
| // if(strncmp(cmd,"quit",4)==0) | |
| // { | |
| // printf("bye^_^\n"); | |
| // close(control_sockfd); | |
| // break; | |
| // } | |
| // ///printf("支持 list,pwd,mkdir,back,cd,up,get\n"); | |
| // } | |
| // | |
| // } | |
| // else if(login_yes==0) | |
| // { | |
| // int i;//不成功登录下最多还有两次机会，如果不能在两次登录，则，关闭链接。 | |
| // printf("Can not login vsftpd"); | |
| // for(i=2;i>0;i--) | |
| // { | |
| // printf("你还有 %d 登录机会\n",i); | |
| // login(); | |
| // if(login_yes==1) | |
| // { | |
| // goto comm; | |
| // } | |
| // } | |
| // if(i==0) | |
| // { | |
| // printf("你不能在登录！\n"); | |
| // close(control_sockfd); | |
| // } | |
| // | |
| // } | |
| // else if (strncmp(cmd,"quit",4)==0) | |
| // { | |
| // ftp_quit(control_sockfd); | |
| // close(control_sockfd); | |
| // | |
| // } | |
| // | |
| // return 0; | |
| //} | |
| int login() | |
| { | |
| //初始化端口信息 | |
| struct sockaddr_in serv_addr; | |
| char senddate,recvdate; | |
| char sendline[MAXSIZE],recvline[MAXSIZE]; | |
| struct hostent *host; | |
| //获取hostent中相关参数 | |
| char name[MAXSIZE],password[MAXSIZE]; | |
| printf("please enter the hostname\n"); | |
| printf("ftp->"); | |
| fflush(stdout); | |
| //创建socket | |
| if( (control_sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0){ | |
| printf("create socket error: %s(errno: %d)\n", strerror(errno),errno); | |
| return -1 ; | |
| //exit(0); | |
| } | |
| memset(&serv_addr, 0, sizeof(serv_addr)); | |
| serv_addr.sin_family=AF_INET; | |
| serv_addr.sin_port=htons(SERV_PORT); | |
| serv_addr.sin_addr.s_addr=INADDR_ANY; | |
| //点分十进制转化为二进制整数地址 | |
| if(inet_pton(AF_INET, FTP_CONNECT_IP, &serv_addr.sin_addr) <= 0){ | |
| printf("inet_pton error for %s\n", FTP_CONNECT_IP); | |
| close(control_sockfd); | |
| return -1 ; | |
| //exit(0); | |
| } | |
| //调用connect函数发起连接 | |
| if((connect(control_sockfd,(SA*)&serv_addr,sizeof(serv_addr)))<0) | |
| { | |
| printf("连接失败\n"); | |
| login_yes=0; | |
| } | |
| ///printf("连接到 %d--->>>/n",&serv_addr.sin_addr); | |
| recvdate=recv(control_sockfd,recvline,sizeof(recvline),0); | |
| if(recvdate==-1) | |
| { | |
| printf("recvdate is connect error/n"); | |
| login_yes=0; | |
| } | |
| else if(strncmp(recvline,"220",3)==0) | |
| { | |
| printf("220 连接成功，请输入用户名\n"); | |
| login_yes=1; | |
| } | |
| else | |
| { | |
| printf("220 connect is error!"); | |
| login_yes=0; | |
| } | |
| //ftp用户登录主体部分 | |
| int sendbytes,recvbytes; | |
| zeromery(name,1024); | |
| zeromery(password,1024); | |
| zeromery(recvline,1024); | |
| zeromery(sendline,1024); | |
| //printf("自动登录 用户名：windows-ftp\n") ; | |
| strcat(sendline,"USER "); | |
| strcat(sendline,"windows-ftp"); | |
| strcat(sendline,"\r\n"); | |
| printf("--->%s\n",sendline); | |
| sendbytes=send(control_sockfd,sendline,strlen(sendline),0); | |
| if(sendbytes==-1) | |
| { | |
| printf("send is wrong\n"); | |
| login_yes=0; | |
| } | |
| recvbytes=recv(control_sockfd,recvline,sizeof(recvline),0); | |
| if(strncmp(recvline,"331",3)==0) | |
| { | |
| //printf("331 please specify the password./n"); | |
| printf("331 请输入密码\n"); | |
| } | |
| else | |
| { | |
| printf("recv date is error./n"); | |
| login_yes=0; | |
| } | |
| zeromery(sendline,1024); | |
| zeromery(recvline,1024); | |
| sleep(1) ; | |
| printf("密码：111111\n") ; | |
| strcat(sendline,"PASS "); | |
| strcat(sendline,"111111"); | |
| strcat(sendline,"\r\n"); | |
| printf("--->%s\n",sendline); | |
| sendbytes=send(control_sockfd,sendline,strlen(sendline),0); | |
| if(sendbytes==-1) | |
| { | |
| printf("pass send is error\n"); | |
| login_yes=0; | |
| } | |
| recvbytes=recv(control_sockfd,recvline,sizeof(recvline),0); | |
| if(strncmp(recvline,"230",3)==0) | |
| { | |
| printf("登录成功!\n"); | |
| login_yes=1; | |
| } | |
| else | |
| { | |
| printf("pass recv is error\n"); | |
| login_yes=0; | |
| } | |
| if(login_yes==0) | |
| { | |
| close(control_sockfd); //登陆失败 关闭接口 | |
| return -1 ; | |
| } | |
| //进入到对应子路径 | |
| //////ftp_changdir("001",control_sockfd); //cd | |
| return control_sockfd; | |
| } | |
| //数组初始化 | |
| void zeromery(char *a,int len) | |
| { | |
| int i; | |
| len=sizeof(a); | |
| for(i=0;i<len;i++) | |
| { | |
| a[i]=0; | |
| } | |
| } | |
| //quit函数,control_sockfd,通过实参传递 | |
| void ftp_quit(int control_sockfd ) | |
| { | |
| char sendline[1024]; | |
| char recvline[1024]; | |
| int recvbytes; | |
| int sendbytes; | |
| First_login = 0 ; //重新恢复到开始目录 | |
| zeromery(sendline,1024); | |
| zeromery(recvline,1024); | |
| strcat(sendline,"QUIT"); | |
| strcat(sendline,"\r\n"); | |
| sendbytes=send(control_sockfd,sendline,strlen(sendline),0); | |
| if(sendbytes<0) | |
| { | |
| printf("quit send is error!\n"); | |
| goto END; | |
| //exit(1); | |
| } | |
| recvbytes=recv(control_sockfd,recvline,strlen(recvline),0); | |
| if(strncmp(recvline,"221",3)==0) | |
| { | |
| printf("221 bye!^_^"); | |
| goto END; | |
| //exit(1); | |
| } | |
| else | |
| { | |
| printf("quit recv is error!\n"); | |
| goto END; | |
| //exit(1); | |
| } | |
| END: | |
| close(control_sockfd); | |
| return ; | |
| } | |
| //mkd,在所在路径中创建目录 函数 | |
| void ftp_creat_mkd(char *path,int control_sockfd) | |
| { | |
| char sendline[1024]; | |
| char recvline[1024]; | |
| zeromery(sendline,1024); | |
| zeromery(recvline,1024); | |
| int recvbytes,sendbytes; | |
| int issuccess; | |
| strcat(sendline,"MKD "); | |
| strcat(sendline,path); | |
| strcat(sendline,"\r\n"); | |
| printf("%s\n",sendline); | |
| sendbytes=send(control_sockfd,sendline,strlen(sendline),0); | |
| if(sendbytes<0) | |
| { | |
| printf("mkd send is error!"); | |
| exit(1); | |
| } | |
| recvbytes=recv(control_sockfd,recvline,strlen(recvline),0); | |
| if(strncmp(recvline,"257",3)==0) | |
| { | |
| issuccess=1; | |
| } | |
| else | |
| { | |
| issuccess=0; | |
| } | |
| } | |
| //改变目录函数chdir | |
| void ftp_changdir(char *dir,int control_sockfd) | |
| { | |
| char sendline[1024]; | |
| char recvline[1024]; | |
| int recvbytes,sendbytes; | |
| zeromery(sendline,1024); | |
| zeromery(recvline,1024); | |
| strcat(sendline,"CWD "); | |
| strcat(sendline,dir); | |
| strcat(sendline,"\r\n"); | |
| printf("%s\n",sendline); | |
| sendbytes=send(control_sockfd,sendline,strlen(sendline),0); | |
| if(sendbytes<0) | |
| { | |
| printf("cwd send is error!\n"); | |
| } | |
| recvbytes=recv(control_sockfd,recvline,sizeof(recvline),0); | |
| if(recvbytes<0) | |
| { | |
| printf("cwd recv is error!\n"); | |
| } | |
| if(strncmp(recvline,"250",3)==0) | |
| { | |
| char buf[55]; | |
| snprintf(buf,39,">>> %s\n",recvline); | |
| printf("%s\n",buf); | |
| } | |
| else | |
| { | |
| printf("cwd chdir is error!\n"); | |
| return ; | |
| //exit(1); | |
| } | |
| //登录成功 | |
| First_login = 1 ; | |
| } | |
| //pwd 命令函数 | |
| //在应答中返回当前工作目录，“pwd”+\r\n | |
| void ftp_pwd(int control_sockfd) | |
| { | |
| int recvbytes,sendbytes; | |
| char sendline[1024],recvline[1024]; | |
| zeromery(sendline,1024); | |
| zeromery(recvline,1024); | |
| strcat(sendline,"PWD"); | |
| strcat(sendline,"\r\n"); | |
| if(First_login==0) | |
| { | |
| //进入到对应子路径 | |
| //////ftp_changdir("001",control_sockfd); //cd | |
| } | |
| sendbytes=send(control_sockfd,sendline,strlen(sendline),0); | |
| if(sendbytes<0) | |
| { | |
| printf("pwd,send is error\n"); | |
| } | |
| recvbytes=recv(control_sockfd,recvline,sizeof(recvline),0); | |
| if(strncmp(recvline,"257",3)==0) | |
| { | |
| int i=0; | |
| char *ptr; | |
| char currendir[1024]; | |
| zeromery(currendir,1024); | |
| ptr=recvline+5; | |
| while(*(ptr)!='"') | |
| { | |
| currendir[i++]=*(ptr); | |
| ptr++; | |
| } | |
| currendir[i]='\0'; | |
| printf("current directory is:%s\n",currendir); | |
| } | |
| else | |
| { | |
| printf("pwd,recv is error!\n"); | |
| } | |
| } | |
| //back 返回上一级函数，相当于cd /; | |
| void ftp_back(int control_sockfd) | |
| { | |
| char sendline[1024],recvline[1024]; | |
| int recvbytes,sendbytes; | |
| zeromery(sendline,1024); | |
| zeromery(recvline,1024); | |
| strcat(sendline,"CDUP"); | |
| strcat(sendline,"\r\n"); | |
| sendbytes=send(control_sockfd,sendline,strlen(sendline),0); | |
| if(sendbytes<0) | |
| { | |
| printf("cdup send is error !\n"); | |
| } | |
| recvbytes=recv(control_sockfd,recvline,sizeof(recvline),0); | |
| if(recvbytes<0) | |
| { | |
| printf("cdup recv is error !\n"); | |
| } | |
| if(strncmp(recvline,"250",3)==0) | |
| { | |
| printf("请求的文件操作已经成功\n"); | |
| } | |
| } | |
| //下载的实现函数 | |
| int ftp_download(int control_sockfd) | |
| { | |
| int pasv_or_port;// 定义the ftp协议的两种不同工作mode | |
| int recvbytes,sendbytes; | |
| char sendline[1024],recvline[1024]; | |
| struct sockaddr_in serv_addr; | |
| FILE *fd; | |
| int i,j; | |
| int data_sockfd; | |
| //type | |
| zeromery(recvline,1024); | |
| zeromery(sendline,1024); | |
| strcat(sendline,"TYPE "); | |
| strcat(sendline,"I"); | |
| strcat(sendline,"\r\n"); | |
| sendbytes=send(control_sockfd,sendline,strlen(sendline),0); | |
| if(sendbytes<0) | |
| { | |
| printf(" type send is error!\n"); | |
| } | |
| recvbytes=recv(control_sockfd,recvline,sizeof(recvline),0); | |
| if(strncmp(recvline,"200",3)==0) | |
| { | |
| printf("使用二进制传输数据\n"); | |
| } | |
| else | |
| { | |
| printf("type recv is error!\n"); | |
| } | |
| if(npsupport==0) | |
| { | |
| //open the file | |
| int size; | |
| char localpathname[60];//预打开的文件路径字符串 | |
| int flags; | |
| char pathname[60]; | |
| unsigned int mode; | |
| //用户来选择pasv 或者是 port mode | |
| char selectdata_mode_tran[1024]; | |
| zeromery(selectdata_mode_tran,1024); | |
| zeromery(sendline,1024); | |
| zeromery(recvline,1024); | |
| pasv_or_port=0;//(默认是pasv模式) | |
| //pasv mode | |
| if(pasv_or_port==0) | |
| { | |
| strcat(sendline,"PASV"); | |
| strcat(sendline,"\r\n"); | |
| sendbytes=send(control_sockfd,sendline,strlen(sendline),0); | |
| if(sendbytes<0) | |
| { | |
| printf("pasv send is error!\n"); | |
| } | |
| zeromery(recvline,1024); | |
| recvbytes=recv(control_sockfd,recvline,sizeof(recvline),0); | |
| if(recvbytes<0) | |
| { | |
| printf("pasv recv is error!\n"); | |
| } | |
| if(strncmp(recvline,"227",3)==0) | |
| { | |
| char buf[55]; | |
| snprintf(buf,51,">>> %s\n",recvline); | |
| printf("%s\n",buf); | |
| } | |
| else | |
| { | |
| printf("pasv recv is error!\n"); | |
| } | |
| //处理ftp server 端口 | |
| char *ptr1,*ptr2; | |
| char num[1024]; | |
| zeromery(num,1024); | |
| //取低位字节 | |
| ptr1=recvline+strlen(recvline); | |
| while(*(ptr1)!=')') | |
| { | |
| ptr1--; | |
| } | |
| ptr2=ptr1; | |
| while(*(ptr2)!=',') | |
| ptr2--; | |
| strncpy(num,ptr2+1,ptr1-ptr2-1); | |
| i=atoi(num);//将字符串转换成整数 | |
| //取高位字节 | |
| zeromery(num,1024); | |
| ptr1=ptr2; | |
| ptr2--; | |
| while(*(ptr2)!=',') | |
| ptr2--; | |
| strncpy(num,ptr2+1,ptr1-ptr2-1); | |
| j=atoi(num); | |
| //初始化服务器数据连接时的端口信息 | |
| int data_serviceport; | |
| data_serviceport=j*256+i; | |
| data_sockfd=socket(AF_INET,SOCK_STREAM,0); | |
| serv_addr.sin_family=AF_INET; | |
| serv_addr.sin_addr.s_addr=INADDR_ANY; | |
| serv_addr.sin_port=htons(data_serviceport); | |
| if(connect(data_sockfd,(struct sockaddr*)&serv_addr,sizeof(struct sockaddr))==-1) | |
| { | |
| printf("pasv data connect is error!\n"); | |
| } | |
| printf("remote-file-pathname="); | |
| scanf("%s",pathname); | |
| printf("local-file-pathname="); | |
| scanf("%s",localpathname); | |
| printf("local:%s remore:%s\n",localpathname,pathname); | |
| fd=fopen(localpathname,"w+"); | |
| if(fd==NULL) | |
| { | |
| printf("cannot open file\n"); | |
| exit(1); | |
| } | |
| //send the command retr; | |
| zeromery(sendline,1024); | |
| zeromery(recvline,1024); | |
| strcat(sendline,"RETR "); | |
| strcat(sendline,pathname); | |
| strcat(sendline,"\r\n"); | |
| printf("%s\n",sendline); | |
| sendbytes=send(control_sockfd,sendline,strlen(sendline),0); | |
| if(sendbytes<0) | |
| { | |
| printf("retr send is error!\n"); | |
| } | |
| recvbytes=recv(control_sockfd,recvline,sizeof(recvline),0); | |
| if(recvbytes<0) | |
| { | |
| printf("retr recv is error!\n"); | |
| } | |
| if(strncmp(recvline,"400",3)>0) | |
| { | |
| printf("return is error!\n"); | |
| } | |
| } | |
| //begin to transpotr data | |
| sleep(1); | |
| int flag=0; | |
| char buffer[65536]; | |
| recvdata: | |
| zeromery(buffer,1024); | |
| recvbytes=recv(data_sockfd,buffer,sizeof(buffer),0); | |
| if(recvbytes<0) | |
| { | |
| close(data_sockfd); | |
| goto end; | |
| } | |
| fwrite(buffer,1,recvbytes,fd); | |
| zeromery(recvline,1024); | |
| recvbytes=recv(control_sockfd,recvline,sizeof(recvline),0); | |
| if(flag==0) | |
| { | |
| if(strncmp(recvline,"226",3)!=0) | |
| { | |
| flag=1; | |
| goto recvdata; | |
| } | |
| } | |
| end: | |
| if(flag!=1) | |
| { | |
| zeromery(recvline,1024); | |
| shutdown(data_sockfd,SHUT_WR); | |
| close(data_sockfd); | |
| } | |
| close(data_sockfd); | |
| return 0; | |
| } | |
| } | |
| //up 函数 | |
| int ftp_up(int control_sockfd, char* localpathname, char* pathname) | |
| { | |
| int pasv_or_port;// 定义the ftp协议的两种不同工作mode | |
| int recvbytes,sendbytes; | |
| char sendline[1024],recvline[1024]; | |
| struct sockaddr_in serv_addr; | |
| FILE *fd; | |
| int i,j; | |
| int data_sockfd; | |
| //type | |
| zeromery(recvline,1024); | |
| zeromery(sendline,1024); | |
| strcat(sendline,"TYPE "); | |
| strcat(sendline,"I"); | |
| strcat(sendline,"\r\n"); | |
| sendbytes=send(control_sockfd,sendline,strlen(sendline),0); | |
| if(sendbytes<0) | |
| { | |
| printf(" type send is error!\n"); | |
| //发送失败 返回-2 启用重连 | |
| return -2 ; | |
| } | |
| recvbytes=recv(control_sockfd,recvline,sizeof(recvline),0); | |
| if(strncmp(recvline,"200",3)==0) | |
| { | |
| printf("使用二进制传输数据\n"); | |
| } | |
| else | |
| { | |
| printf("type recv is error!\n"); | |
| } | |
| if(npsupport==0) | |
| { | |
| //open the file | |
| int size; | |
| //char localpathname[60];//预打开的文件路径字符串 | |
| int flags; | |
| //char pathname[60]; | |
| unsigned int mode; | |
| //用户来选择pasv 或者是 port mode | |
| char selectdata_mode_tran[1024]; | |
| zeromery(selectdata_mode_tran,1024); | |
| zeromery(sendline,1024); | |
| zeromery(recvline,1024); | |
| pasv_or_port=0;//(默认是pasv模式) | |
| //pasv mode | |
| if(pasv_or_port==0) | |
| { | |
| strcat(sendline,"PASV"); | |
| strcat(sendline,"\r\n"); | |
| sendbytes=send(control_sockfd,sendline,strlen(sendline),0); | |
| if(sendbytes<0) | |
| { | |
| printf("pasv send is error!\n"); | |
| return -2 ; //////////////////////////临时增加 | |
| } | |
| recvbytes=recv(control_sockfd,recvline,sizeof(recvline),0); | |
| if(recvbytes<0) | |
| { | |
| printf("pasv recv is error!\n"); | |
| return -2 ; //////////////////////////临时增加 | |
| } | |
| if(strncmp(recvline,"227",3)==0) | |
| { | |
| char buf[55]; | |
| snprintf(buf,51,">>> %s\n",recvline); | |
| printf("%s\n",buf); | |
| } | |
| else | |
| { | |
| printf("pasv recv is error!\n"); | |
| return -2 ; //////////////////////////临时增加 | |
| } | |
| //处理ftp server 端口 | |
| char *ptr1,*ptr2; | |
| char num[1024]; | |
| zeromery(num,1024); | |
| //取低位字节 | |
| ptr1=recvline+strlen(recvline); | |
| while(*(ptr1)!=')') | |
| { | |
| ptr1--; | |
| } | |
| ptr2=ptr1; | |
| while(*(ptr2)!=',') | |
| ptr2--; | |
| strncpy(num,ptr2+1,ptr1-ptr2-1); | |
| i=atoi(num);//将字符串转换成整数 | |
| //取高位字节 | |
| zeromery(num,1024); | |
| ptr1=ptr2; | |
| ptr2--; | |
| while(*(ptr2)!=',') | |
| ptr2--; | |
| strncpy(num,ptr2+1,ptr1-ptr2-1); | |
| j=atoi(num); | |
| //初始化服务器数据连接时的端口信息 | |
| int data_serviceport; | |
| data_serviceport=j*256+i; | |
| data_sockfd=socket(AF_INET,SOCK_STREAM,0); | |
| serv_addr.sin_family=AF_INET; | |
| serv_addr.sin_addr.s_addr=INADDR_ANY; | |
| serv_addr.sin_port=htons(data_serviceport); | |
| if(inet_pton(AF_INET, FTP_CONNECT_IP, &serv_addr.sin_addr) <= 0){ | |
| printf("inet_pton error for %s\n", FTP_CONNECT_IP); | |
| exit(0); | |
| } | |
| if(connect(data_sockfd,(struct sockaddr*)&serv_addr,sizeof(struct sockaddr))==-1) | |
| { | |
| printf("pasv data connect is error!\n"); | |
| } | |
| //printf("local-file-pathname="); | |
| //scanf("%s",pathname); | |
| //printf("remote-file-pathname="); | |
| //scanf("%s",localpathname); | |
| //printf("local:%s remore:%s\n",localpathname,pathname); | |
| fd=fopen(pathname,"r"); | |
| if(fd==NULL) | |
| { | |
| printf("cannot open file,请重新输入！\n"); | |
| return -2 ; | |
| } | |
| //send the command retr; | |
| zeromery(sendline,1024); | |
| zeromery(recvline,1024); | |
| strcat(sendline,"STOR "); | |
| strcat(sendline,localpathname); | |
| strcat(sendline,"\r\n"); | |
| printf("%s\n",sendline); | |
| sendbytes=send(control_sockfd,sendline,strlen(sendline),0); | |
| if(sendbytes<0) | |
| { | |
| printf("stor send is error!\n"); | |
| } | |
| recvbytes=recv(control_sockfd,recvline,sizeof(recvline),0); | |
| if(recvbytes<0) | |
| { | |
| printf("retr recv is error!\n"); | |
| } | |
| if(strncmp(recvline,"150",3)==0) | |
| { | |
| char buf[55]; | |
| snprintf(buf,25,">>> %s\n",recvline); | |
| printf("%s\n",buf); | |
| } | |
| } | |
| while(!feof(fd)) | |
| { | |
| char buffer[65536]; | |
| zeromery(buffer,sizeof(buffer)); | |
| int size; | |
| size=fread(buffer,1,sizeof(buffer),fd); | |
| if(ferror(fd)) | |
| { | |
| printf("read file data is error!\n"); | |
| fclose(fd) ; | |
| return -2 ; | |
| } | |
| else | |
| { | |
| zeromery(sendline,1024); | |
| sendbytes=send(data_sockfd,buffer,size,0); | |
| printf("传输了 %d 个字节\n",sendbytes); | |
| //发送失败 返回-2 启用重连 | |
| if(sendbytes<0) | |
| { | |
| fclose(fd) ; | |
| return -2 ; | |
| } | |
| } | |
| close(data_sockfd); | |
| recvbytes=recv(control_sockfd,recvline,sizeof(recvline),0); | |
| if(strncmp(recvline,"226",3)==0) | |
| { | |
| printf("226 transfer complete"); | |
| break; | |
| } | |
| } | |
| fclose(fd) ; | |
| return 0; | |
| } | |
| } |
