sftp学习

什么是sftp？

sftp的简单操作

• 远程连接

int RobostSftp::Init(QString ip,QString port,QString user_name, QString user_password)
{   int rc;session = ssh_new();if (!session) {fprintf(stderr, "ssh initialization failed\n");//        return 1;}/* Set session options */ip_=ip;port_=port;user_name_=user_name;user_password_=user_password;ssh_options_set(session, SSH_OPTIONS_PORT_STR, port.toStdString().c_str());ssh_options_set(session, SSH_OPTIONS_HOST, ip.toStdString().c_str());ssh_options_set(session, SSH_OPTIONS_USER, user_name.toStdString().c_str());rc = ssh_connect(session);if (rc != SSH_OK) {dialog->setLogTagText("警告");dialog->setLogText("没有连接到"+ip+"主机！！！");dialog->exec();fprintf(stderr, "ssh connection failed (%d)\n", rc);return 1;}/* Authenticate with password */rc = ssh_userauth_password(session, NULL, user_password.toStdString().c_str());if (rc != SSH_AUTH_SUCCESS) {dialog->setLogTagText("警告");dialog->setLogText("SFTP远程连接密码错误！！！");dialog->exec();//     fprintf(stderr, "ssh authentication failed (%d)\n", rc);return 1;}/* Initialize SFTP session */sftp = sftp_new(session);if (!sftp) {dialog->setLogTagText("警告");dialog->setLogText("SFTP初始化失败！！！");dialog->exec();
//        fprintf(stderr, "sftp initialization failed\n");return 1;}/* Initialize SFTP subsystem */rc = sftp_init(sftp);if (rc != SSH_OK) {dialog->setLogTagText("警告");dialog->setLogText("SFTP初始化失败！！！");dialog->exec();//          fprintf(stderr, "sftp initialization failed (%d)\n", rc);return 1;}fileTransferThread->init(ip,port,user_name,user_password);fileTransferThread->start();return 0;
}

• 通过本机删除远程主机文件

void RobostSftp::deleteDir(QString filepath)
{QString path="/opt/hura/dataset/map/053101/path";int rc=sftp_rmdir(sftp,path.toStdString().c_str());if(rc!=SSH_OK) qDebug() << "删除失败: " << sftp_get_error(sftp);else qDebug()<<"删除成功";recursiveDelete(sftp,path.toStdString().c_str());//通过建立的sftp会话去递归的删除远程文件夹
}void RobostSftp::recursiveDelete(sftp_session sftp, const char *path) {sftp_dir dir;sftp_attributes attributes;dir = sftp_opendir(sftp, path);if (!dir) {qDebug()<<"无法打开目录 " << path ;return;}while ((attributes = sftp_readdir(sftp, dir)) != NULL) {if (strcmp(attributes->name, ".") == 0 || strcmp(attributes->name, "..") == 0) {continue;}char *filepath;asprintf(&filepath, "%s/%s", path, attributes->name);if (attributes->type == SSH_FILEXFER_TYPE_DIRECTORY) {// 如果是子文件夹，递归删除recursiveDelete(sftp, filepath);} else {// 如果是文件，直接删除int rc = sftp_unlink(sftp, filepath);if (rc != SSH_OK) {qDebug()<<"无法删除文件 " << path ;} else {qDebug()<< "文件 " << filepath << " 删除成功"  ;}}free(filepath);}sftp_closedir(dir);// 删除空目录int rc = sftp_rmdir(sftp, path);if (rc != SSH_OK) {qDebug()<<"无法删除目录 " << path ;} else {qDebug()<<"删除成功 " << path ;}
}