privops.h
上传用户:ig0539
上传日期:2022-05-21
资源大小:181k
文件大小:3k
- #ifndef VSF_PRIVOPS_H
- #define VSF_PRIVOPS_H
- struct mystr;
- struct vsf_session;
- /* vsf_privop_get_ftp_port_sock()
- * PURPOSE
- * Return a network socket potentially bound to a privileged port (less than
- * 1024) and connected to the remote.
- * PARAMETERS
- * p_sess - the current session object
- * remote_port - the remote port to connect to
- * RETURNS
- * A file descriptor which is a socket bound to the privileged port, and
- * connected to the remote on the specified port.
- * Kills the process / session if the bind() fails.
- * Returns -1 if the bind() worked but the connect() was not possible.
- */
- int vsf_privop_get_ftp_port_sock(struct vsf_session* p_sess,
- unsigned short remote_port);
- /* vsf_privop_pasv_cleanup()
- * PURPOSE
- * Makes sure any listening passive socket is closed.
- * PARAMETERS
- * p_sess - the current session object
- */
- void vsf_privop_pasv_cleanup(struct vsf_session* p_sess);
- /* vsf_privop_pasv_listen()
- * PURPOSE
- * Start listening for an FTP data connection.
- * PARAMETERS
- * p_sess - the current session object
- * RETURNS
- * The port we ended up listening on.
- */
- unsigned short vsf_privop_pasv_listen(struct vsf_session* p_sess);
- /* vsf_privop_pasv_active()
- * PURPOSE
- * Determine whether there is a passive listening socket active.
- * PARAMETERS
- * p_sess - the current session object
- * RETURNS
- * 1 if active, 0 if not.
- */
- int vsf_privop_pasv_active(struct vsf_session* p_sess);
- /* vsf_privop_accept_pasv()
- * PURPOSE
- * Accept a connection on the listening data socket.
- * PARAMETERS
- * p_sess - the current session object
- * RETURNS
- * The file descriptor of the accepted incoming connection; or -1 if a
- * network error occurred or -2 if the incoming connection was from the
- * wrong IP (security issue).
- */
- int vsf_privop_accept_pasv(struct vsf_session* p_sess);
- /* vsf_privop_do_file_chown()
- * PURPOSE
- * Takes a file owned by the unprivileged FTP user, and change the ownership
- * to the value defined in the config file.
- * PARAMETERS
- * p_sess - the current session object
- * fd - the file descriptor of the regular file
- */
- void vsf_privop_do_file_chown(struct vsf_session* p_sess, int fd);
- enum EVSFPrivopLoginResult
- {
- kVSFLoginNull = 0,
- kVSFLoginFail,
- kVSFLoginAnon,
- kVSFLoginReal
- };
- /* vsf_privop_do_login()
- * PURPOSE
- * Check if the supplied username/password combination is valid. This
- * interface caters for checking both anonymous and real logins.
- * PARAMETERS
- * p_sess - the current session object
- * p_pass_str - the proposed password
- * RETURNS
- * kVSFLoginFail - access denied
- * kVSFLoginAnon - anonymous login credentials OK
- * kVSFLoginReal - real login credentials OK
- */
- enum EVSFPrivopLoginResult vsf_privop_do_login(
- struct vsf_session* p_sess, const struct mystr* p_pass_str);
- #endif /* VSF_PRIVOPS_H */