137 } opt;  variable
384     opt.server_name         = DFL_SERVER_NAME;  in main()
385     opt.server_port         = DFL_SERVER_PORT;  in main()
386     opt.debug_level         = DFL_DEBUG_LEVEL;  in main()
387     opt.authentication      = DFL_AUTHENTICATION;  in main()
388     opt.mode                = DFL_MODE;  in main()
389     opt.user_name           = DFL_USER_NAME;  in main()
390     opt.user_pwd            = DFL_USER_PWD;  in main()
391     opt.mail_from           = DFL_MAIL_FROM;  in main()
392     opt.mail_to             = DFL_MAIL_TO;  in main()
393     opt.ca_file             = DFL_CA_FILE;  in main()
394     opt.crt_file            = DFL_CRT_FILE;  in main()
395     opt.key_file            = DFL_KEY_FILE;  in main()
396     opt.force_ciphersuite[0] = DFL_FORCE_CIPHER;  in main()
406             opt.server_name = q;  in main()
408             opt.server_port = q;  in main()
410             opt.debug_level = atoi(q);  in main()
411             if (opt.debug_level < 0 || opt.debug_level > 65535) {  in main()
415             opt.authentication = atoi(q);  in main()
416             if (opt.authentication < 0 || opt.authentication > 1) {  in main()
420             opt.mode = atoi(q);  in main()
421             if (opt.mode < 0 || opt.mode > 1) {  in main()
425             opt.user_name = q;  in main()
427             opt.user_pwd = q;  in main()
429             opt.mail_from = q;  in main()
431             opt.mail_to = q;  in main()
433             opt.ca_file = q;  in main()
435             opt.crt_file = q;  in main()
437             opt.key_file = q;  in main()
439             opt.force_ciphersuite[0] = -1;  in main()
441             opt.force_ciphersuite[0] = mbedtls_ssl_get_ciphersuite_id(q);  in main()
443             if (opt.force_ciphersuite[0] <= 0) {  in main()
447             opt.force_ciphersuite[1] = 0;  in main()
475     if (strlen(opt.ca_file)) {  in main()
476         ret = mbedtls_x509_crt_parse_file(&cacert, opt.ca_file);  in main()
504     if (strlen(opt.crt_file)) {  in main()
505         ret = mbedtls_x509_crt_parse_file(&clicert, opt.crt_file);  in main()
516     if (strlen(opt.key_file)) {  in main()
517         ret = mbedtls_pk_parse_keyfile(&pkey, opt.key_file, "",  in main()
547     mbedtls_printf("  . Connecting to tcp/%s/%s...", opt.server_name,  in main()
548                    opt.server_port);  in main()
551     if ((ret = mbedtls_net_connect(&server_fd, opt.server_name,  in main()
552                                    opt.server_port, MBEDTLS_NET_PROTO_TCP)) != 0) {  in main()
580     if (opt.force_ciphersuite[0] != DFL_FORCE_CIPHER) {  in main()
581         mbedtls_ssl_conf_ciphersuites(&conf, opt.force_ciphersuite);  in main()
595     if ((ret = mbedtls_ssl_set_hostname(&ssl, opt.server_name)) != 0) {  in main()
604     if (opt.mode == MODE_SSL_TLS) {  in main()
674     if (opt.authentication) {  in main()
687         mbedtls_printf("  > Write username to server: %s", opt.user_name);  in main()
690         ret = mbedtls_base64_encode(base, sizeof(base), &n, (const unsigned char *) opt.user_name,  in main()
691                                     strlen(opt.user_name));  in main()
706         mbedtls_printf("  > Write password to server: %s", opt.user_pwd);  in main()
709         ret = mbedtls_base64_encode(base, sizeof(base), &n, (const unsigned char *) opt.user_pwd,  in main()
710                                     strlen(opt.user_pwd));  in main()
730     len = mbedtls_snprintf((char *) buf, sizeof(buf), "MAIL FROM:<%s>\r\n", opt.mail_from);  in main()
746     len = mbedtls_snprintf((char *) buf, sizeof(buf), "RCPT TO:<%s>\r\n", opt.mail_to);  in main()
779                            "Enjoy!", opt.mail_from);  in main()