static void parse_username_password(struct vsf_session* p_sess) { while (1) { /* Kitsune: update point */ kitsune_update("prelogin.c"); /**DSU updatepoint */ /* Kitsune */ vsf_sysutil_kitsune_set_update_point("prelogin.c"); vsf_cmdio_get_cmd_and_arg(p_sess, &p_sess->ftp_cmd_str, &p_sess->ftp_arg_str, 1); if (str_equal_text(&p_sess->ftp_cmd_str, "USER")) { handle_user_command(p_sess); } else if (str_equal_text(&p_sess->ftp_cmd_str, "PASS")) { handle_pass_command(p_sess); } else if (str_equal_text(&p_sess->ftp_cmd_str, "QUIT")) { vsf_cmdio_write(p_sess, FTP_GOODBYE, "Goodbye."); vsf_sysutil_exit(0); } else { vsf_cmdio_write(p_sess, FTP_LOGINERR, "Please login with USER and PASS."); } } }
static void parse_username_password(struct vsf_session* p_sess) { while (1) { vsf_cmdio_get_cmd_and_arg(p_sess, &p_sess->ftp_cmd_str, &p_sess->ftp_arg_str, 1); if (str_equal_text(&p_sess->ftp_cmd_str, "USER")) { handle_user_command(p_sess); } else if (str_equal_text(&p_sess->ftp_cmd_str, "PASS")) { handle_pass_command(p_sess); } else if (str_equal_text(&p_sess->ftp_cmd_str, "QUIT")) { vsf_cmdio_write(p_sess, FTP_GOODBYE, "Goodbye."); vsf_sysutil_exit(0); } else if (str_equal_text(&p_sess->ftp_cmd_str, "FEAT")) { handle_feat(p_sess); } else if (tunable_ssl_enable && str_equal_text(&p_sess->ftp_cmd_str, "AUTH")) { handle_auth(p_sess); } else if (tunable_ssl_enable && str_equal_text(&p_sess->ftp_cmd_str, "PBSZ")) { handle_pbsz(p_sess); } else if (tunable_ssl_enable && str_equal_text(&p_sess->ftp_cmd_str, "PROT")) { handle_prot(p_sess); } else { vsf_cmdio_write(p_sess, FTP_LOGINERR, "Please login with USER and PASS."); } } }
static void handle_sigurg(void* p_private) { struct mystr async_cmd_str = INIT_MYSTR; struct mystr async_arg_str = INIT_MYSTR; struct mystr real_cmd_str = INIT_MYSTR; unsigned int len; struct vsf_session* p_sess = (struct vsf_session*) p_private; /* Did stupid client sent something OOB without a data connection? */ if (p_sess->data_fd == -1) { return; } /* Get the async command - blocks (use data timeout alarm) */ vsf_cmdio_get_cmd_and_arg(p_sess, &async_cmd_str, &async_arg_str, 0); /* Chop off first four characters; they are telnet characters. The client * should have sent the first two normally and the second two as urgent * data. */ len = str_getlen(&async_cmd_str); if (len >= 4) { str_right(&async_cmd_str, &real_cmd_str, len - 4); } if (str_equal_text(&real_cmd_str, "ABOR")) { p_sess->abor_received = 1; vsf_sysutil_shutdown_failok(p_sess->data_fd); } else { /* Sorry! */ vsf_cmdio_write(p_sess, FTP_BADCMD, "Unknown command."); } str_free(&async_cmd_str); str_free(&async_arg_str); str_free(&real_cmd_str); }
void process_post_login(struct vsf_session* p_sess) { int retval; if (p_sess->is_anonymous) { vsf_sysutil_set_umask(tunable_anon_umask); p_sess->bw_rate_max = tunable_anon_max_rate; } else { vsf_sysutil_set_umask(tunable_local_umask); p_sess->bw_rate_max = tunable_local_max_rate; } if (tunable_async_abor_enable) { vsf_sysutil_install_sighandler(kVSFSysUtilSigURG, handle_sigurg, p_sess); vsf_sysutil_activate_sigurg(VSFTP_COMMAND_FD); } /* Kitsune */ vsf_sysutil_kitsune_set_update_point("postlogin.c"); if(!kitsune_is_updating()) { /* Handle any login message */ vsf_banner_dir_changed(p_sess, FTP_LOGINOK); vsf_cmdio_write(p_sess, FTP_LOGINOK, "Login successful. Have fun."); } else { /* Set sigchld function pointer (normally done in twoprocess.c) */ vsf_sysutil_default_sig(kVSFSysUtilSigCHLD); vsf_sysutil_install_async_sighandler(kVSFSysUtilSigCHLD, twoproc_handle_sigchld); } /* End Kitsune */ while(1) { if (tunable_setproctitle_enable) { vsf_sysutil_setproctitle("IDLE"); } /* Kitsune update point */ kitsune_update("postlogin.c"); /**DSU updatepoint */ /* Blocks */ vsf_cmdio_get_cmd_and_arg(p_sess, &p_sess->ftp_cmd_str, &p_sess->ftp_arg_str, 1); if (tunable_setproctitle_enable) { struct mystr proctitle_str = INIT_MYSTR; str_copy(&proctitle_str, &p_sess->ftp_cmd_str); if (!str_isempty(&p_sess->ftp_arg_str)) { str_append_char(&proctitle_str, ' '); str_append_str(&proctitle_str, &p_sess->ftp_arg_str); } /* Suggestion from Solar */ str_replace_unprintable(&proctitle_str, '?'); vsf_sysutil_setproctitle_str(&proctitle_str); str_free(&proctitle_str); } if (str_equal_text(&p_sess->ftp_cmd_str, "QUIT")) { vsf_cmdio_write(p_sess, FTP_GOODBYE, "Goodbye."); vsf_sysutil_exit(0); } else if (str_equal_text(&p_sess->ftp_cmd_str, "PWD") || str_equal_text(&p_sess->ftp_cmd_str, "XPWD")) { handle_pwd(p_sess); } else if (str_equal_text(&p_sess->ftp_cmd_str, "CWD") || str_equal_text(&p_sess->ftp_cmd_str, "XCWD")) { handle_cwd(p_sess); } else if (str_equal_text(&p_sess->ftp_cmd_str, "CDUP") || str_equal_text(&p_sess->ftp_cmd_str, "XCUP")) { handle_cdup(p_sess); } else if (tunable_pasv_enable && str_equal_text(&p_sess->ftp_cmd_str, "PASV")) { handle_pasv(p_sess); } else if (str_equal_text(&p_sess->ftp_cmd_str, "RETR")) { handle_retr(p_sess); } else if (str_equal_text(&p_sess->ftp_cmd_str, "NOOP")) { vsf_cmdio_write(p_sess, FTP_NOOPOK, "NOOP ok."); } else if (str_equal_text(&p_sess->ftp_cmd_str, "SYST")) { vsf_cmdio_write(p_sess, FTP_SYSTOK, "UNIX Type: L8"); } else if (str_equal_text(&p_sess->ftp_cmd_str, "HELP")) { vsf_cmdio_write(p_sess, FTP_BADHELP, "Sorry, I don't have help."); } else if (str_equal_text(&p_sess->ftp_cmd_str, "LIST")) { handle_list(p_sess); } else if (str_equal_text(&p_sess->ftp_cmd_str, "TYPE")) { handle_type(p_sess); } else if (tunable_port_enable && str_equal_text(&p_sess->ftp_cmd_str, "PORT")) { handle_port(p_sess); } else if (tunable_write_enable && (tunable_anon_upload_enable || !p_sess->is_anonymous) && str_equal_text(&p_sess->ftp_cmd_str, "STOR")) { handle_stor(p_sess); } else if (tunable_write_enable && (tunable_anon_mkdir_write_enable || !p_sess->is_anonymous) && (str_equal_text(&p_sess->ftp_cmd_str, "MKD") || str_equal_text(&p_sess->ftp_cmd_str, "XMKD"))) { handle_mkd(p_sess); } else if (tunable_write_enable && (tunable_anon_other_write_enable || !p_sess->is_anonymous) && (str_equal_text(&p_sess->ftp_cmd_str, "RMD") || str_equal_text(&p_sess->ftp_cmd_str, "XRMD"))) { handle_rmd(p_sess); } else if (tunable_write_enable && (tunable_anon_other_write_enable || !p_sess->is_anonymous) && str_equal_text(&p_sess->ftp_cmd_str, "DELE")) { handle_dele(p_sess); } else if (str_equal_text(&p_sess->ftp_cmd_str, "REST")) { handle_rest(p_sess); } else if (tunable_write_enable && (tunable_anon_other_write_enable || !p_sess->is_anonymous) && str_equal_text(&p_sess->ftp_cmd_str, "RNFR")) { handle_rnfr(p_sess); } else if (tunable_write_enable && (tunable_anon_other_write_enable || !p_sess->is_anonymous) && str_equal_text(&p_sess->ftp_cmd_str, "RNTO")) { handle_rnto(p_sess); } else if (str_equal_text(&p_sess->ftp_cmd_str, "NLST")) { handle_nlst(p_sess); } else if (str_equal_text(&p_sess->ftp_cmd_str, "SIZE")) { handle_size(p_sess); } else if (!p_sess->is_anonymous && str_equal_text(&p_sess->ftp_cmd_str, "SITE")) { handle_site(p_sess); } else if (str_equal_text(&p_sess->ftp_cmd_str, "ABOR")) { vsf_cmdio_write(p_sess, FTP_ABOR_NOCONN, "No transfer to ABOR."); } else if (tunable_write_enable && (tunable_anon_other_write_enable || !p_sess->is_anonymous) && str_equal_text(&p_sess->ftp_cmd_str, "APPE")) { handle_appe(p_sess); } else if (str_equal_text(&p_sess->ftp_cmd_str, "MDTM")) { handle_mdtm(p_sess); } else if (str_equal_text(&p_sess->ftp_cmd_str, "PASV") || str_equal_text(&p_sess->ftp_cmd_str, "PORT") || str_equal_text(&p_sess->ftp_cmd_str, "STOR") || str_equal_text(&p_sess->ftp_cmd_str, "MKD") || str_equal_text(&p_sess->ftp_cmd_str, "XMKD") || str_equal_text(&p_sess->ftp_cmd_str, "RMD") || str_equal_text(&p_sess->ftp_cmd_str, "XRMD") || str_equal_text(&p_sess->ftp_cmd_str, "DELE") || str_equal_text(&p_sess->ftp_cmd_str, "RNFR") || str_equal_text(&p_sess->ftp_cmd_str, "RNTO") || str_equal_text(&p_sess->ftp_cmd_str, "SITE") || str_equal_text(&p_sess->ftp_cmd_str, "APPE")) { vsf_cmdio_write(p_sess, FTP_NOPERM, "Permission denied."); } else { vsf_cmdio_write(p_sess, FTP_BADCMD, "Unknown command."); } } }
static void parse_username_password(struct vsf_session* p_sess) { while (1) { vsf_cmdio_get_cmd_and_arg(p_sess, &p_sess->ftp_cmd_str, &p_sess->ftp_arg_str, 1); if (tunable_ftp_enable) { if (str_equal_text(&p_sess->ftp_cmd_str, "USER")) { handle_user_command(p_sess); } else if (str_equal_text(&p_sess->ftp_cmd_str, "PASS")) { handle_pass_command(p_sess); } else if (str_equal_text(&p_sess->ftp_cmd_str, "QUIT")) { vsf_cmdio_write_exit(p_sess, FTP_GOODBYE, "Goodbye."); } else if (str_equal_text(&p_sess->ftp_cmd_str, "FEAT")) { handle_feat(p_sess); } else if (str_equal_text(&p_sess->ftp_cmd_str, "OPTS")) { handle_opts(p_sess); } else if (tunable_ssl_enable && str_equal_text(&p_sess->ftp_cmd_str, "AUTH") && !p_sess->control_use_ssl) { handle_auth(p_sess); } else if (tunable_ssl_enable && str_equal_text(&p_sess->ftp_cmd_str, "PBSZ")) { handle_pbsz(p_sess); } else if (tunable_ssl_enable && str_equal_text(&p_sess->ftp_cmd_str, "PROT")) { handle_prot(p_sess); } else if (str_isempty(&p_sess->ftp_cmd_str) && str_isempty(&p_sess->ftp_arg_str)) { /* Deliberately ignore to avoid NAT device bugs, as per ProFTPd. */ } else { vsf_cmdio_write(p_sess, FTP_LOGINERR, "Please login with USER and PASS."); } } else if (tunable_http_enable) { if (str_equal_text(&p_sess->ftp_cmd_str, "GET")) { handle_get(p_sess); } else { vsf_cmdio_write(p_sess, FTP_LOGINERR, "Bad HTTP verb."); } vsf_sysutil_exit(0); } } }
void process_post_login(struct vsf_session* p_sess) { if (p_sess->is_anonymous) { vsf_sysutil_set_umask(tunable_anon_umask); p_sess->bw_rate_max = tunable_anon_max_rate; } else { vsf_sysutil_set_umask(tunable_local_umask); p_sess->bw_rate_max = tunable_local_max_rate; } if (tunable_async_abor_enable) { vsf_sysutil_install_sighandler(kVSFSysUtilSigURG, handle_sigurg, p_sess); vsf_sysutil_activate_sigurg(VSFTP_COMMAND_FD); } /* Handle any login message */ vsf_banner_dir_changed(p_sess, FTP_LOGINOK); vsf_cmdio_write(p_sess, FTP_LOGINOK, "Login successful."); while(1) { int cmd_ok = 1; if (tunable_setproctitle_enable) { vsf_sysutil_setproctitle("IDLE"); } /* Blocks */ vsf_cmdio_get_cmd_and_arg(p_sess, &p_sess->ftp_cmd_str, &p_sess->ftp_arg_str, 1); if (tunable_setproctitle_enable) { struct mystr proctitle_str = INIT_MYSTR; str_copy(&proctitle_str, &p_sess->ftp_cmd_str); if (!str_isempty(&p_sess->ftp_arg_str)) { str_append_char(&proctitle_str, ' '); str_append_str(&proctitle_str, &p_sess->ftp_arg_str); } /* Suggestion from Solar */ str_replace_unprintable(&proctitle_str, '?'); vsf_sysutil_setproctitle_str(&proctitle_str); str_free(&proctitle_str); } /* Test command against the allowed list.. */ if (tunable_cmds_allowed) { static struct mystr s_src_str; static struct mystr s_rhs_str; str_alloc_text(&s_src_str, tunable_cmds_allowed); while (1) { str_split_char(&s_src_str, &s_rhs_str, ','); if (str_isempty(&s_src_str)) { cmd_ok = 0; break; } else if (str_equal(&s_src_str, &p_sess->ftp_cmd_str)) { break; } str_copy(&s_src_str, &s_rhs_str); } } if (!cmd_ok) { vsf_cmdio_write(p_sess, FTP_NOPERM, "Permission denied."); } else if (str_equal_text(&p_sess->ftp_cmd_str, "QUIT")) { vsf_cmdio_write(p_sess, FTP_GOODBYE, "Goodbye."); vsf_sysutil_exit(0); } else if (str_equal_text(&p_sess->ftp_cmd_str, "PWD") || str_equal_text(&p_sess->ftp_cmd_str, "XPWD")) { handle_pwd(p_sess); } else if (str_equal_text(&p_sess->ftp_cmd_str, "CWD") || str_equal_text(&p_sess->ftp_cmd_str, "XCWD")) { handle_cwd(p_sess); } else if (str_equal_text(&p_sess->ftp_cmd_str, "CDUP") || str_equal_text(&p_sess->ftp_cmd_str, "XCUP")) { handle_cdup(p_sess); } else if (tunable_pasv_enable && !p_sess->epsv_all && (str_equal_text(&p_sess->ftp_cmd_str, "PASV") || str_equal_text(&p_sess->ftp_cmd_str, "P@SW"))) { handle_pasv(p_sess, 0); } else if (tunable_pasv_enable && str_equal_text(&p_sess->ftp_cmd_str, "EPSV")) { handle_pasv(p_sess, 1); } else if (tunable_download_enable && str_equal_text(&p_sess->ftp_cmd_str, "RETR")) { handle_retr(p_sess); } else if (str_equal_text(&p_sess->ftp_cmd_str, "NOOP")) { vsf_cmdio_write(p_sess, FTP_NOOPOK, "NOOP ok."); } else if (str_equal_text(&p_sess->ftp_cmd_str, "SYST")) { vsf_cmdio_write(p_sess, FTP_SYSTOK, "UNIX Type: L8"); } else if (str_equal_text(&p_sess->ftp_cmd_str, "HELP")) { handle_help(p_sess); } else if (tunable_dirlist_enable && str_equal_text(&p_sess->ftp_cmd_str, "LIST")) { handle_list(p_sess); } else if (str_equal_text(&p_sess->ftp_cmd_str, "TYPE")) { handle_type(p_sess); } else if (tunable_port_enable && !p_sess->epsv_all && str_equal_text(&p_sess->ftp_cmd_str, "PORT")) { handle_port(p_sess); } else if (tunable_write_enable && (tunable_anon_upload_enable || !p_sess->is_anonymous) && str_equal_text(&p_sess->ftp_cmd_str, "STOR")) { handle_stor(p_sess); } else if (tunable_write_enable && (tunable_anon_mkdir_write_enable || !p_sess->is_anonymous) && (str_equal_text(&p_sess->ftp_cmd_str, "MKD") || str_equal_text(&p_sess->ftp_cmd_str, "XMKD"))) { handle_mkd(p_sess); } else if (tunable_write_enable && (tunable_anon_other_write_enable || !p_sess->is_anonymous) && (str_equal_text(&p_sess->ftp_cmd_str, "RMD") || str_equal_text(&p_sess->ftp_cmd_str, "XRMD"))) { handle_rmd(p_sess); } else if (tunable_write_enable && (tunable_anon_other_write_enable || !p_sess->is_anonymous) && str_equal_text(&p_sess->ftp_cmd_str, "DELE")) { handle_dele(p_sess); } else if (str_equal_text(&p_sess->ftp_cmd_str, "REST")) { handle_rest(p_sess); } else if (tunable_write_enable && (tunable_anon_other_write_enable || !p_sess->is_anonymous) && str_equal_text(&p_sess->ftp_cmd_str, "RNFR")) { handle_rnfr(p_sess); } else if (tunable_write_enable && (tunable_anon_other_write_enable || !p_sess->is_anonymous) && str_equal_text(&p_sess->ftp_cmd_str, "RNTO")) { handle_rnto(p_sess); } else if (tunable_dirlist_enable && str_equal_text(&p_sess->ftp_cmd_str, "NLST")) { handle_nlst(p_sess); } else if (str_equal_text(&p_sess->ftp_cmd_str, "SIZE")) { handle_size(p_sess); } else if (!p_sess->is_anonymous && str_equal_text(&p_sess->ftp_cmd_str, "SITE")) { handle_site(p_sess); } /* Note - the weird ABOR string is checking for an async ABOR arriving * without a SIGURG condition. */ else if (str_equal_text(&p_sess->ftp_cmd_str, "ABOR") || str_equal_text(&p_sess->ftp_cmd_str, "\377\364\377\362ABOR")) { vsf_cmdio_write(p_sess, FTP_ABOR_NOCONN, "No transfer to ABOR."); } else if (tunable_write_enable && (tunable_anon_other_write_enable || !p_sess->is_anonymous) && str_equal_text(&p_sess->ftp_cmd_str, "APPE")) { handle_appe(p_sess); } else if (str_equal_text(&p_sess->ftp_cmd_str, "MDTM")) { handle_mdtm(p_sess); } else if (tunable_port_enable && str_equal_text(&p_sess->ftp_cmd_str, "EPRT")) { handle_eprt(p_sess); } else if (str_equal_text(&p_sess->ftp_cmd_str, "STRU")) { str_upper(&p_sess->ftp_arg_str); if (str_equal_text(&p_sess->ftp_arg_str, "F")) { vsf_cmdio_write(p_sess, FTP_STRUOK, "Structure set to F."); } else { vsf_cmdio_write(p_sess, FTP_BADSTRU, "Bad STRU command."); } } else if (str_equal_text(&p_sess->ftp_cmd_str, "MODE")) { str_upper(&p_sess->ftp_arg_str); if (str_equal_text(&p_sess->ftp_arg_str, "S")) { vsf_cmdio_write(p_sess, FTP_MODEOK, "Mode set to S."); } else { vsf_cmdio_write(p_sess, FTP_BADMODE, "Bad MODE command."); } } else if (str_equal_text(&p_sess->ftp_cmd_str, "STOU")) { handle_stou(p_sess); } else if (str_equal_text(&p_sess->ftp_cmd_str, "ALLO")) { vsf_cmdio_write(p_sess, FTP_ALLOOK, "ALLO command ignored."); } else if (str_equal_text(&p_sess->ftp_cmd_str, "REIN")) { vsf_cmdio_write(p_sess, FTP_COMMANDNOTIMPL, "REIN not implemented."); } else if (str_equal_text(&p_sess->ftp_cmd_str, "ACCT")) { vsf_cmdio_write(p_sess, FTP_COMMANDNOTIMPL, "ACCT not implemented."); } else if (str_equal_text(&p_sess->ftp_cmd_str, "SMNT")) { vsf_cmdio_write(p_sess, FTP_COMMANDNOTIMPL, "SMNT not implemented."); } else if (str_equal_text(&p_sess->ftp_cmd_str, "FEAT")) { vsf_cmdio_write_hyphen(p_sess, FTP_FEAT, "Features:"); vsf_cmdio_write_raw(p_sess, " MDTM\r\n"); vsf_cmdio_write_raw(p_sess, " REST STREAM\r\n"); vsf_cmdio_write_raw(p_sess, " SIZE\r\n"); vsf_cmdio_write(p_sess, FTP_FEAT, "End"); } else if (str_equal_text(&p_sess->ftp_cmd_str, "OPTS")) { vsf_cmdio_write(p_sess, FTP_BADOPTS, "Option not understood."); } else if (str_equal_text(&p_sess->ftp_cmd_str, "STAT") && str_isempty(&p_sess->ftp_arg_str)) { handle_stat(p_sess); } else if (tunable_dirlist_enable && str_equal_text(&p_sess->ftp_cmd_str, "STAT")) { handle_stat_file(p_sess); } else if (str_equal_text(&p_sess->ftp_cmd_str, "PASV") || str_equal_text(&p_sess->ftp_cmd_str, "PORT") || str_equal_text(&p_sess->ftp_cmd_str, "STOR") || str_equal_text(&p_sess->ftp_cmd_str, "MKD") || str_equal_text(&p_sess->ftp_cmd_str, "XMKD") || str_equal_text(&p_sess->ftp_cmd_str, "RMD") || str_equal_text(&p_sess->ftp_cmd_str, "XRMD") || str_equal_text(&p_sess->ftp_cmd_str, "DELE") || str_equal_text(&p_sess->ftp_cmd_str, "RNFR") || str_equal_text(&p_sess->ftp_cmd_str, "RNTO") || str_equal_text(&p_sess->ftp_cmd_str, "SITE") || str_equal_text(&p_sess->ftp_cmd_str, "APPE") || str_equal_text(&p_sess->ftp_cmd_str, "EPSV") || str_equal_text(&p_sess->ftp_cmd_str, "EPRT") || str_equal_text(&p_sess->ftp_cmd_str, "RETR") || str_equal_text(&p_sess->ftp_cmd_str, "LIST") || str_equal_text(&p_sess->ftp_cmd_str, "NLST") || str_equal_text(&p_sess->ftp_cmd_str, "STOU") || str_equal_text(&p_sess->ftp_cmd_str, "ALLO") || str_equal_text(&p_sess->ftp_cmd_str, "REIN") || str_equal_text(&p_sess->ftp_cmd_str, "ACCT") || str_equal_text(&p_sess->ftp_cmd_str, "SMNT") || str_equal_text(&p_sess->ftp_cmd_str, "FEAT") || str_equal_text(&p_sess->ftp_cmd_str, "OPTS") || str_equal_text(&p_sess->ftp_cmd_str, "STAT")) { vsf_cmdio_write(p_sess, FTP_NOPERM, "Permission denied."); } else { vsf_cmdio_write(p_sess, FTP_BADCMD, "Unknown command."); } } }