/* * Copyright (C) 2003-2011 The Music Player Daemon Project * http://www.musicpd.org * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #include "config.h" #include "client_internal.h" #include <string.h> #define CLIENT_LIST_MODE_BEGIN "command_list_begin" #define CLIENT_LIST_OK_MODE_BEGIN "command_list_ok_begin" #define CLIENT_LIST_MODE_END "command_list_end" static enum command_return client_process_command_list(struct client *client, bool list_ok, GSList *list) { enum command_return ret = COMMAND_RETURN_OK; unsigned num = 0; for (GSList *cur = list; cur != NULL; cur = g_slist_next(cur)) { char *cmd = cur->data; g_debug("command_process_list: process command \"%s\"", cmd); ret = command_process(client, num++, cmd); g_debug("command_process_list: command returned %i", ret); if (ret != COMMAND_RETURN_OK || client_is_expired(client)) break; else if (list_ok) client_puts(client, "list_OK\n"); } return ret; } enum command_return client_process_line(struct client *client, char *line) { enum command_return ret; if (strcmp(line, "noidle") == 0) { if (client->idle_waiting) { /* send empty idle response and leave idle mode */ client->idle_waiting = false; command_success(client); client_write_output(client); } /* do nothing if the client wasn't idling: the client has already received the full idle response from client_idle_notify(), which he can now evaluate */ return COMMAND_RETURN_OK; } else if (client->idle_waiting) { /* during idle mode, clients must not send anything except "noidle" */ g_warning("[%u] command \"%s\" during idle", client->num, line); return COMMAND_RETURN_CLOSE; } if (client->cmd_list_OK >= 0) { if (strcmp(line, CLIENT_LIST_MODE_END) == 0) { g_debug("[%u] process command list", client->num); /* for scalability reasons, we have prepended each new command; now we have to reverse it to restore the correct order */ client->cmd_list = g_slist_reverse(client->cmd_list); ret = client_process_command_list(client, client->cmd_list_OK, client->cmd_list); g_debug("[%u] process command " "list returned %i", client->num, ret); if (ret == COMMAND_RETURN_CLOSE || client_is_expired(client)) return COMMAND_RETURN_CLOSE; if (ret == COMMAND_RETURN_OK) command_success(client); client_write_output(client); free_cmd_list(client->cmd_list); client->cmd_list = NULL; client->cmd_list_OK = -1; } else { size_t len = strlen(line) + 1; client->cmd_list_size += len; if (client->cmd_list_size > client_max_command_list_size) { g_warning("[%u] command list size (%lu) " "is larger than the max (%lu)", client->num, (unsigned long)client->cmd_list_size, (unsigned long)client_max_command_list_size); return COMMAND_RETURN_CLOSE; } new_cmd_list_ptr(client, line); ret = COMMAND_RETURN_OK; } } else { if (strcmp(line, CLIENT_LIST_MODE_BEGIN) == 0) { client->cmd_list_OK = 0; ret = COMMAND_RETURN_OK; } else if (strcmp(line, CLIENT_LIST_OK_MODE_BEGIN) == 0) { client->cmd_list_OK = 1; ret = COMMAND_RETURN_OK; } else { g_debug("[%u] process command \"%s\"", client->num, line); ret = command_process(client, 0, line); g_debug("[%u] command returned %i", client->num, ret); if (ret == COMMAND_RETURN_CLOSE || client_is_expired(client)) return COMMAND_RETURN_CLOSE; if (ret == COMMAND_RETURN_OK) command_success(client); client_write_output(client); } } return ret; }