2 * Copyright (C) 1997-2007 Andre Noll <maan@systemlinux.org>
4 * Licensed under the GPL v2. For licencing details see COPYING.
7 /** \file server.h common server data structures */
10 /** size of the selector_info and audio_file info strings of struct misc_meta_data */
11 #define MMD_INFO_SIZE 16384
14 * defines one command of para_server
16 struct server_command {
17 /** the name of the command */
19 /** pointer to the function that handles the command */
20 int (*handler)(int, int, char * const * const);
21 /** the privileges a user must have to execute this command */
23 /** one-line description of the command */
24 const char *description;
25 /** summary of the command line options */
27 /** the long help text */
31 /** holds the arguments for the para_server's sender command */
32 struct sender_command_data{
33 /** greater than 0 indicates that a sender cmd is already queued */
35 /** the number of the sender in question */
37 /** used for the allow/deny/add/remove subcommands */
39 /** used for allow/deny */
41 /** the portnumber for add/remove */
46 * used for parent-child communication
48 * There's only one struct of this type which lives in shared memory
49 * for communication between the server instances. Access to this
50 * area is serialized via mmd_lock() and mmd_unlock(). There are two
51 * reasons for a variable to be included here:
53 * - At least one command (i.e. child of the server) must be able to
58 * - The contents are listed in the stat command and have to be up to
61 struct misc_meta_data {
62 /** information on the current audio file */
63 struct audio_format_info afi;
64 /** the size of the current audio file in bytes */
66 /** the full path of the current audio file */
67 char filename[_POSIX_PATH_MAX];
68 /** the last modification file of the current audio file */
70 /** the number of the current audio format */
72 /** the "old" status flags -- commands may only read them */
73 unsigned int vss_status_flags;
74 /** the new status flags -- commands may set them **/
75 unsigned int new_vss_status_flags;
76 /** the number of data chunks sent for the current audio file */
77 long unsigned chunks_sent;
78 /** set by the jmp/ff commands to the new position in chunks */
79 long unsigned repos_request;
80 /** the number of the chunk currently sent out*/
81 long unsigned current_chunk;
82 /** the milliseconds that have been skipped of the current audio file */
84 /** the time para_server started to stream */
85 struct timeval stream_start;
88 * commands may increase this to force a status update to be sent to all
92 /** the number of audio files already sent */
93 unsigned int num_played;
94 /** the number of executed commands */
95 unsigned int num_commands;
96 /** the number of connections para_server received so far */
97 unsigned int num_connects;
98 /** the number of connections currently active */
99 unsigned int active_connections;
100 /** the process id of para_server */
102 /** a string that gets filled in by the current audio file selector */
103 char selector_info[MMD_INFO_SIZE];
104 /** the number if the current audio file selector */
106 /** commands set this to non-zero to change the current selector */
108 /** used by the sender command */
109 struct sender_command_data sender_cmd_data;
112 extern struct server_args_info conf;
114 int handle_connect(int fd, struct sockaddr_in *addr);
115 void mmd_unlock(void);