-// PARA_INFO_LOG("status %d\n", pcd->status);
- t->ret = 1;
- if (pcd->fd < 0)
- return;
- if (!pcd->check_r && !pcd->check_w)
- return;
- if (pcd->check_r && !FD_ISSET(pcd->fd, &s->rfds))
- return;
- if (pcd->check_w && !FD_ISSET(pcd->fd, &s->wfds))
- return;
- switch (pcd->status) {
- case CL_CONNECTED: /* receive welcome message */
- t->ret = client_recv_buffer(pcd);
- if (t->ret > 0)
- pcd->status = CL_RECEIVED_WELCOME;
- return;
- case CL_RECEIVED_WELCOME: /* send auth command */
- sprintf(pcd->buf, "auth %s%s", pcd->conf.plain_given?
- "" : "rc4 ", pcd->user);
- PARA_INFO_LOG("--> %s\n", pcd->buf);
- t->ret = send_buffer(pcd->fd, pcd->buf);
- if (t->ret >= 0)
- pcd->status = CL_SENT_AUTH;
- return;
- case CL_SENT_AUTH: /* receive challenge number */
- pcd->loaded = 0;
- t->ret = client_recv_buffer(pcd);
- if (t->ret < 0)
- return;
- if (t->ret != 64) {
- t->ret = -E_INVALID_CHALLENGE;
- PARA_ERROR_LOG("received the following: %s\n", pcd->buf);
- return;
- }
- PARA_INFO_LOG("%s", "<-- [challenge]\n");
- /* decrypt challenge number */
- t->ret = para_decrypt_challenge(pcd->key_file, &pcd->challenge_nr,
- (unsigned char *) pcd->buf, 64);
- if (t->ret > 0)
- pcd->status = CL_RECEIVED_CHALLENGE;
- return;
- case CL_RECEIVED_CHALLENGE: /* send decrypted challenge */
- PARA_INFO_LOG("--> %lu\n", pcd->challenge_nr);
- t->ret = send_va_buffer(pcd->fd, "%s%lu", CHALLENGE_RESPONSE_MSG,
- pcd->challenge_nr);
- if (t->ret > 0)
- pcd->status = CL_SENT_CH_RESPONSE;
- return;
- case CL_SENT_CH_RESPONSE: /* read server response */
- {
- size_t bytes_received;
- unsigned char rc4_buf[2 * RC4_KEY_LEN] = "";
- pcd->loaded = 0;
- t->ret = client_recv_buffer(pcd);
- if (t->ret < 0)
- return;
- bytes_received = t->ret;
- PARA_DEBUG_LOG("++++ server info ++++\n%s\n++++ end of server "
- "info ++++\n", pcd->buf);
- /* check if server has sent "Proceed" message */
- t->ret = -E_CLIENT_AUTH;
- if (!strstr(pcd->buf, PROCEED_MSG))
- return;
- t->ret = 1;
- pcd->status = CL_RECEIVED_PROCEED;
- if (bytes_received < PROCEED_MSG_LEN + 32)
- return;
- PARA_INFO_LOG("%s", "decrypting session key\n");
- t->ret = para_decrypt_buffer(pcd->key_file, rc4_buf,
- (unsigned char *)pcd->buf + PROCEED_MSG_LEN + 1,
- bytes_received - PROCEED_MSG_LEN - 1);
- if (t->ret < 0)
- return;
- RC4_set_key(&pcd->rc4_send_key, RC4_KEY_LEN, rc4_buf);
- RC4_set_key(&pcd->rc4_recv_key, RC4_KEY_LEN, rc4_buf + RC4_KEY_LEN);
- enable_crypt(pcd->fd, rc4_recv, rc4_send, pcd);
- }
- case CL_RECEIVED_PROCEED: /* concat args and send command */
- {
- int i;
- char *command = NULL;
- for (i = 0; i < pcd->conf.inputs_num; i++) {
- char *tmp = command;
- command = make_message("%s\n%s", command?
- command : "", pcd->conf.inputs[i]);
- free(tmp);
- }
- command = para_strcat(command, EOC_MSG "\n");
- PARA_DEBUG_LOG("--> %s\n", command);
- t->ret = send_buffer(pcd->fd, command);
- free(command);
- if (t->ret > 0)
- pcd->status = CL_SENT_COMMAND;
- return;
+ *ct_ptr = ct;
+ ct->scc.fd = -1;
+ ret = -E_CLIENT_SYNTAX;
+ if (client_cmdline_parser(argc, argv, &ct->conf))
+ goto out;
+ version_handle_flag("client", ct->conf.version_given);
+ if (ct->conf.help_given || ct->conf.detailed_help_given)
+ print_help_and_die(ct);
+
+ ct->config_file = ct->conf.config_file_given?
+ para_strdup(ct->conf.config_file_arg) :
+ make_message("%s/.paraslash/client.conf", home);
+ ret = file_exists(ct->config_file);
+ if (!ret && ct->conf.config_file_given) {
+ ret = -E_NO_CONFIG;
+ goto out;
+ }
+ if (ret) {
+ struct client_cmdline_parser_params params = {
+ .override = 0,
+ .initialize = 0,
+ .check_required = 0,
+ .check_ambiguity = 0,
+ .print_errors = 0
+ };
+ ret = -E_BAD_CONFIG;
+ if (client_cmdline_parser_config_file(ct->config_file,
+ &ct->conf, ¶ms))
+ goto out;
+ }
+ ct->user = ct->conf.user_given?
+ para_strdup(ct->conf.user_arg) : para_logname();
+
+ if (ct->conf.key_file_given)
+ ct->key_file = para_strdup(ct->conf.key_file_arg);
+ else {
+ ct->key_file = make_message("%s/.paraslash/key.%s",
+ home, ct->user);
+ if (!file_exists(ct->key_file)) {
+ free(ct->key_file);
+ ct->key_file = make_message("%s/.ssh/id_rsa", home);