541 lines
16 KiB
C
541 lines
16 KiB
C
|
||
/*************************************************************************/
|
||
/* Copyright (C) 2012 Jonathan Moore Liles */
|
||
/* */
|
||
/* Permission to use, copy, modify, and/or distribute this software for */
|
||
/* any purpose with or without fee is hereby granted, provided that the */
|
||
/* above copyright notice and this permission notice appear in all */
|
||
/* copies. */
|
||
/* */
|
||
/* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL */
|
||
/* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED */
|
||
/* WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE */
|
||
/* AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL */
|
||
/* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR */
|
||
/* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER */
|
||
/* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR */
|
||
/* PERFORMANCE OF THIS SOFTWARE. */
|
||
/*************************************************************************/
|
||
|
||
|
||
/*************************************************************/
|
||
/* A simple, callback based C API for NSM clients. */
|
||
/* */
|
||
/* Simplified Example: */
|
||
/* */
|
||
/* #include "nsm.h" */
|
||
/* */
|
||
/* int */
|
||
/* cb_nsm_open ( const char *name, */
|
||
/* const char *display_name, */
|
||
/* const char *client_id, */
|
||
/* char **out_msg, */
|
||
/* void *userdata ) */
|
||
/* { */
|
||
/* do_open_stuff(); */
|
||
/* return ERR_OK; */
|
||
/* } */
|
||
/* */
|
||
/* int */
|
||
/* cb_nsm_save ( char **out_msg, */
|
||
/* void *userdata ) */
|
||
/* { */
|
||
/* do_save_stuff(); */
|
||
/* return ERR_OK; */
|
||
/* } */
|
||
/* */
|
||
/* static nsm_client_t *nsm = 0 */
|
||
/* */
|
||
/* int main( int argc, char **argv ) */
|
||
/* { */
|
||
/* const char *nsm_url = getenv( "NSM_URL" ); */
|
||
/* */
|
||
/* if ( nsm_url ) */
|
||
/* { */
|
||
/* nsm = nsm_new(); */
|
||
/* */
|
||
/* nsm_set_open_callback( nsm, cb_nsm_open, 0 ); */
|
||
/* nsm_set_save_callback( nsm, cb_nsm_save, 0 ); */
|
||
/* */
|
||
/* if ( 0 == nsm_init( nsm, nsm_url ) ) */
|
||
/* { */
|
||
/* nsm_send_announce( nsm, "FOO", "", argv[0] ); */
|
||
/* } */
|
||
/* else */
|
||
/* { */
|
||
/* nsm_free( nsm ); */
|
||
/* nsm = 0; */
|
||
/* } */
|
||
/* } */
|
||
/* } */
|
||
/*************************************************************/
|
||
|
||
#ifndef _NSM_H
|
||
#define _NSM_H
|
||
|
||
#define NSM_API_VERSION_MAJOR 1
|
||
#define NSM_API_VERSION_MINOR 0
|
||
|
||
#include <lo/lo.h>
|
||
#include <string.h>
|
||
#include <sys/types.h>
|
||
#include <unistd.h>
|
||
#include <stdlib.h>
|
||
#include <stdio.h>
|
||
|
||
typedef void * nsm_client_t;
|
||
typedef int (nsm_open_callback)( const char *name, const char *display_name, const char *client_id, char **out_msg, void *userdata );
|
||
typedef int (nsm_save_callback)( char **out_msg, void *userdata );
|
||
typedef void (nsm_active_callback)( int b, void *userdata );
|
||
typedef void (nsm_session_is_loaded_callback)( void *userdata );
|
||
typedef int (nsm_broadcast_callback)( const char *, lo_message m, void *userdata );
|
||
|
||
#define _NSM() ((struct _nsm_client_t*)nsm)
|
||
|
||
#define NSM_EXPORT __attribute__((unused)) static
|
||
|
||
/* private parts */
|
||
struct _nsm_client_t
|
||
{
|
||
const char *nsm_url;
|
||
|
||
lo_server _server;
|
||
lo_server_thread _st;
|
||
lo_address nsm_addr;
|
||
|
||
int nsm_is_active;
|
||
char *nsm_client_id;
|
||
char *_session_manager_name;
|
||
|
||
nsm_open_callback *open;
|
||
void *open_userdata;
|
||
|
||
nsm_save_callback *save;
|
||
void *save_userdata;
|
||
|
||
nsm_active_callback *active;
|
||
void *active_userdata;
|
||
|
||
nsm_session_is_loaded_callback *session_is_loaded;
|
||
void *session_is_loaded_userdata;
|
||
|
||
nsm_broadcast_callback *broadcast;
|
||
void *broadcast_userdata;
|
||
};
|
||
|
||
enum
|
||
{
|
||
ERR_OK = 0,
|
||
ERR_GENERAL = -1,
|
||
ERR_INCOMPATIBLE_API = -2,
|
||
ERR_BLACKLISTED = -3,
|
||
ERR_LAUNCH_FAILED = -4,
|
||
ERR_NO_SUCH_FILE = -5,
|
||
ERR_NO_SESSION_OPEN = -6,
|
||
ERR_UNSAVED_CHANGES = -7,
|
||
ERR_NOT_NOW = -8
|
||
};
|
||
|
||
NSM_EXPORT
|
||
int
|
||
nsm_is_active ( nsm_client_t *nsm )
|
||
{
|
||
return _NSM()->nsm_is_active;
|
||
}
|
||
|
||
NSM_EXPORT
|
||
const char *
|
||
nsm_get_session_manager_name ( nsm_client_t *nsm )
|
||
{
|
||
return _NSM()->_session_manager_name;
|
||
}
|
||
|
||
NSM_EXPORT
|
||
nsm_client_t *
|
||
nsm_new ( void )
|
||
{
|
||
struct _nsm_client_t *nsm = (struct _nsm_client_t*)malloc( sizeof( struct _nsm_client_t ) );
|
||
|
||
nsm->nsm_url = 0;
|
||
|
||
nsm->nsm_is_active = 0;
|
||
nsm->nsm_client_id = 0;
|
||
|
||
nsm->_server = 0;
|
||
nsm->_st = 0;
|
||
nsm->nsm_addr = 0;
|
||
nsm->_session_manager_name = 0;
|
||
|
||
nsm->open = 0;
|
||
nsm->save = 0;
|
||
nsm->active = 0;
|
||
nsm->session_is_loaded = 0;
|
||
nsm->broadcast = 0;
|
||
|
||
return (nsm_client_t *)nsm;
|
||
}
|
||
|
||
/*******************************************/
|
||
/* CLIENT TO SERVER INFORMATIONAL MESSAGES */
|
||
/*******************************************/
|
||
|
||
NSM_EXPORT
|
||
void
|
||
nsm_send_is_dirty ( nsm_client_t *nsm )
|
||
{
|
||
if ( _NSM()->nsm_is_active )
|
||
lo_send_from( _NSM()->nsm_addr, _NSM()->_server, LO_TT_IMMEDIATE, "/nsm/client/is_dirty", "" );
|
||
}
|
||
|
||
NSM_EXPORT
|
||
void
|
||
nsm_send_is_clean ( nsm_client_t *nsm )
|
||
{
|
||
if ( _NSM()->nsm_is_active )
|
||
lo_send_from( _NSM()->nsm_addr, _NSM()->_server, LO_TT_IMMEDIATE, "/nsm/client/is_clean", "" );
|
||
}
|
||
|
||
NSM_EXPORT
|
||
void
|
||
nsm_send_progress ( nsm_client_t *nsm, float p )
|
||
{
|
||
if ( _NSM()->nsm_is_active )
|
||
lo_send_from( _NSM()->nsm_addr, _NSM()->_server, LO_TT_IMMEDIATE, "/nsm/client/progress", "f", p );
|
||
}
|
||
|
||
NSM_EXPORT
|
||
void
|
||
nsm_send_message ( nsm_client_t *nsm, int priority, const char *msg )
|
||
{
|
||
if ( _NSM()->nsm_is_active )
|
||
lo_send_from( _NSM()->nsm_addr, _NSM()->_server, LO_TT_IMMEDIATE, "/nsm/client/message", "is", priority, msg );
|
||
}
|
||
|
||
NSM_EXPORT void
|
||
nsm_send_announce ( nsm_client_t *nsm, const char *app_name, const char *capabilities, const char *process_name )
|
||
{
|
||
lo_address to = lo_address_new_from_url( _NSM()->nsm_url );
|
||
|
||
if ( ! to )
|
||
{
|
||
fprintf( stderr, "NSM: Bad address!" );
|
||
return;
|
||
}
|
||
|
||
int pid = (int)getpid();
|
||
|
||
lo_send_from( to, _NSM()->_server, LO_TT_IMMEDIATE, "/nsm/server/announce", "sssiii",
|
||
app_name,
|
||
capabilities,
|
||
process_name,
|
||
NSM_API_VERSION_MAJOR,
|
||
NSM_API_VERSION_MINOR,
|
||
pid );
|
||
|
||
lo_address_free( to );
|
||
}
|
||
|
||
NSM_EXPORT void
|
||
nsm_send_broadcast ( nsm_client_t *nsm, lo_message msg )
|
||
{
|
||
if ( _NSM()->nsm_is_active )
|
||
lo_send_message_from( _NSM()->nsm_addr, _NSM()->_server, "/nsm/server/broadcast", msg );
|
||
}
|
||
|
||
|
||
|
||
NSM_EXPORT
|
||
void
|
||
nsm_check_wait ( nsm_client_t *nsm, int timeout )
|
||
{
|
||
if ( lo_server_wait( _NSM()->_server, timeout ) )
|
||
while ( lo_server_recv_noblock( _NSM()->_server, 0 ) ) {}
|
||
}
|
||
|
||
NSM_EXPORT
|
||
void
|
||
nsm_check_nowait (nsm_client_t *nsm )
|
||
{
|
||
nsm_check_wait( nsm, 0 );
|
||
}
|
||
|
||
|
||
NSM_EXPORT
|
||
void
|
||
nsm_thread_start ( nsm_client_t *nsm )
|
||
{
|
||
lo_server_thread_start( _NSM()->_st );
|
||
}
|
||
|
||
|
||
NSM_EXPORT
|
||
void
|
||
nsm_thread_stop ( nsm_client_t *nsm )
|
||
{
|
||
lo_server_thread_stop( _NSM()->_st );
|
||
}
|
||
|
||
|
||
|
||
NSM_EXPORT void
|
||
nsm_free ( nsm_client_t *nsm )
|
||
{
|
||
if ( _NSM()->_st )
|
||
nsm_thread_stop( nsm );
|
||
|
||
if ( _NSM()->_st )
|
||
lo_server_thread_free( _NSM()->_st );
|
||
else
|
||
lo_server_free( _NSM()->_server );
|
||
|
||
free( _NSM() );
|
||
}
|
||
|
||
/*****************/
|
||
/* SET CALLBACKS */
|
||
/*****************/
|
||
|
||
NSM_EXPORT
|
||
void
|
||
nsm_set_open_callback( nsm_client_t *nsm, nsm_open_callback *open_callback, void *userdata )
|
||
{
|
||
_NSM()->open = open_callback;
|
||
_NSM()->open_userdata = userdata;
|
||
}
|
||
|
||
NSM_EXPORT
|
||
void
|
||
nsm_set_save_callback( nsm_client_t *nsm, nsm_save_callback *save_callback, void *userdata )
|
||
{
|
||
_NSM()->save = save_callback;
|
||
_NSM()->save_userdata = userdata;
|
||
|
||
}
|
||
|
||
NSM_EXPORT
|
||
void
|
||
nsm_set_active_callback( nsm_client_t *nsm, nsm_active_callback *active_callback, void *userdata )
|
||
{
|
||
_NSM()->active = active_callback;
|
||
_NSM()->active_userdata = userdata;
|
||
}
|
||
|
||
NSM_EXPORT
|
||
void
|
||
nsm_set_session_is_loaded_callback( nsm_client_t *nsm, nsm_session_is_loaded_callback *session_is_loaded_callback, void *userdata )
|
||
{
|
||
_NSM()->session_is_loaded = session_is_loaded_callback;
|
||
_NSM()->session_is_loaded_userdata = userdata;
|
||
}
|
||
|
||
|
||
NSM_EXPORT
|
||
void
|
||
nsm_set_broadcast_callback( nsm_client_t *nsm, nsm_broadcast_callback *broadcast_callback, void *userdata )
|
||
{
|
||
_NSM()->broadcast = broadcast_callback;
|
||
_NSM()->broadcast_userdata = userdata;
|
||
}
|
||
|
||
|
||
|
||
/****************/
|
||
/* OSC HANDLERS */
|
||
/****************/
|
||
|
||
#undef OSC_REPLY
|
||
#undef OSC_REPLY_ERR
|
||
|
||
#define OSC_REPLY( value ) lo_send_from( ((struct _nsm_client_t*)user_data)->nsm_addr, ((struct _nsm_client_t*)user_data)->_server, LO_TT_IMMEDIATE, "/reply", "ss", path, value )
|
||
|
||
#define OSC_REPLY_ERR( errcode, value ) lo_send_from( ((struct _nsm_client_t*)user_data)->nsm_addr, ((struct _nsm_client_t*)user_data)->_server, LO_TT_IMMEDIATE, "/error", "sis", path, errcode, value )
|
||
|
||
|
||
NSM_EXPORT int _nsm_osc_open ( const char *path, const char *types, lo_arg **argv, int argc, lo_message msg, void *user_data )
|
||
{
|
||
(void) types;
|
||
(void) argc;
|
||
(void) msg;
|
||
|
||
char *out_msg = NULL;
|
||
|
||
struct _nsm_client_t *nsm = (struct _nsm_client_t*)user_data;
|
||
|
||
nsm->nsm_client_id = strdup( &argv[2]->s );
|
||
|
||
if ( ! nsm->open )
|
||
return 0;
|
||
|
||
int r = nsm->open( &argv[0]->s, &argv[1]->s, &argv[2]->s, &out_msg, nsm->open_userdata );
|
||
|
||
if ( r )
|
||
OSC_REPLY_ERR( r, ( out_msg ? out_msg : "") );
|
||
else
|
||
OSC_REPLY( "OK" );
|
||
|
||
if ( out_msg )
|
||
free( out_msg );
|
||
|
||
return 0;
|
||
}
|
||
|
||
NSM_EXPORT int _nsm_osc_save ( const char *path, const char *types, lo_arg **argv, int argc, lo_message msg, void *user_data )
|
||
{
|
||
(void) types;
|
||
(void) argv;
|
||
(void) argc;
|
||
(void) msg;
|
||
|
||
char *out_msg = NULL;
|
||
|
||
struct _nsm_client_t *nsm = (struct _nsm_client_t*)user_data;
|
||
|
||
if ( ! nsm->save )
|
||
return 0;
|
||
|
||
int r = nsm->save(&out_msg, nsm->save_userdata );
|
||
|
||
if ( r )
|
||
OSC_REPLY_ERR( r, ( out_msg ? out_msg : "") );
|
||
else
|
||
OSC_REPLY( "OK" );
|
||
|
||
if ( out_msg )
|
||
free( out_msg );
|
||
|
||
return 0;
|
||
}
|
||
|
||
NSM_EXPORT int _nsm_osc_announce_reply ( const char *path, const char *types, lo_arg **argv, int argc, lo_message msg, void *user_data )
|
||
{
|
||
(void) path;
|
||
(void) types;
|
||
(void) argc;
|
||
|
||
if ( strcmp( &argv[0]->s, "/nsm/server/announce" ) )
|
||
return -1;
|
||
|
||
struct _nsm_client_t *nsm = (struct _nsm_client_t*)user_data;
|
||
|
||
fprintf( stderr, "NSM: Successfully registered. NSM says: %s", &argv[1]->s );
|
||
|
||
nsm->nsm_is_active = 1;
|
||
nsm->_session_manager_name = strdup( &argv[2]->s );
|
||
nsm->nsm_addr = lo_address_new_from_url( lo_address_get_url( lo_message_get_source( msg ) ));
|
||
|
||
if ( nsm->active )
|
||
nsm->active( nsm->nsm_is_active, nsm->active_userdata );
|
||
|
||
return 0;
|
||
}
|
||
|
||
NSM_EXPORT int _nsm_osc_error ( const char *path, const char *types, lo_arg **argv, int argc, lo_message msg, void *user_data )
|
||
{
|
||
(void) path;
|
||
(void) types;
|
||
(void) argc;
|
||
(void) msg;
|
||
|
||
if ( strcmp( &argv[0]->s, "/nsm/server/announce" ) )
|
||
return -1;
|
||
|
||
struct _nsm_client_t *nsm = (struct _nsm_client_t*)user_data;
|
||
|
||
fprintf( stderr, "NSM: Failed to register with NSM server: %s", &argv[2]->s );
|
||
|
||
nsm->nsm_is_active = 0;
|
||
|
||
if ( nsm->active )
|
||
nsm->active( nsm->nsm_is_active, nsm->active_userdata );
|
||
|
||
return 0;
|
||
}
|
||
|
||
NSM_EXPORT int _nsm_osc_session_is_loaded ( const char *path, const char *types, lo_arg **argv, int argc, lo_message msg, void *user_data )
|
||
{
|
||
(void) path;
|
||
(void) types;
|
||
(void) argv;
|
||
(void) argc;
|
||
(void) msg;
|
||
|
||
struct _nsm_client_t *nsm = (struct _nsm_client_t*)user_data;
|
||
|
||
if ( ! nsm->session_is_loaded )
|
||
return 0;
|
||
|
||
nsm->session_is_loaded( nsm->session_is_loaded_userdata );
|
||
|
||
return 0;
|
||
}
|
||
|
||
NSM_EXPORT int _nsm_osc_broadcast ( const char *path, const char *types, lo_arg **argv, int argc, lo_message msg, void *user_data )
|
||
{
|
||
(void) types;
|
||
(void) argv;
|
||
(void) argc;
|
||
|
||
struct _nsm_client_t *nsm = (struct _nsm_client_t*)user_data;
|
||
|
||
if ( ! nsm->broadcast )
|
||
return 0;
|
||
|
||
return nsm->broadcast( path, msg, nsm->broadcast_userdata );
|
||
}
|
||
|
||
|
||
|
||
NSM_EXPORT
|
||
int
|
||
nsm_init ( nsm_client_t *nsm, const char *nsm_url )
|
||
{
|
||
_NSM()->nsm_url = nsm_url;
|
||
|
||
lo_address addr = lo_address_new_from_url( nsm_url );
|
||
int proto = lo_address_get_protocol( addr );
|
||
lo_address_free( addr );
|
||
|
||
_NSM()->_server = lo_server_new_with_proto( NULL, proto, NULL );
|
||
|
||
if ( ! _NSM()->_server )
|
||
return -1;
|
||
|
||
lo_server_add_method( _NSM()->_server, "/error", "sis", _nsm_osc_error, _NSM() );
|
||
lo_server_add_method( _NSM()->_server, "/reply", "ssss", _nsm_osc_announce_reply, _NSM() );
|
||
lo_server_add_method( _NSM()->_server, "/nsm/client/open", "sss", _nsm_osc_open, _NSM() );
|
||
lo_server_add_method( _NSM()->_server, "/nsm/client/save", "", _nsm_osc_save, _NSM() );
|
||
lo_server_add_method( _NSM()->_server, "/nsm/client/session_is_loaded", "", _nsm_osc_session_is_loaded, _NSM() );
|
||
lo_server_add_method( _NSM()->_server, NULL, NULL, _nsm_osc_broadcast, _NSM() );
|
||
|
||
return 0;
|
||
}
|
||
|
||
|
||
NSM_EXPORT
|
||
int
|
||
nsm_init_thread ( nsm_client_t *nsm, const char *nsm_url )
|
||
{
|
||
_NSM()->nsm_url = nsm_url;
|
||
|
||
lo_address addr = lo_address_new_from_url( nsm_url );
|
||
int proto = lo_address_get_protocol( addr );
|
||
lo_address_free( addr );
|
||
|
||
_NSM()->_st = lo_server_thread_new_with_proto( NULL, proto, NULL );
|
||
_NSM()->_server = lo_server_thread_get_server( _NSM()->_st );
|
||
|
||
if ( ! _NSM()->_server )
|
||
return -1;
|
||
|
||
lo_server_thread_add_method( _NSM()->_st, "/error", "sis", _nsm_osc_error, _NSM() );
|
||
lo_server_thread_add_method( _NSM()->_st, "/reply", "ssss", _nsm_osc_announce_reply, _NSM() );
|
||
lo_server_thread_add_method( _NSM()->_st, "/nsm/client/open", "sss", _nsm_osc_open, _NSM() );
|
||
lo_server_thread_add_method( _NSM()->_st, "/nsm/client/save", "", _nsm_osc_save, _NSM() );
|
||
lo_server_thread_add_method( _NSM()->_st, "/nsm/client/session_is_loaded", "", _nsm_osc_session_is_loaded, _NSM() );
|
||
lo_server_thread_add_method( _NSM()->_st, NULL, NULL, _nsm_osc_broadcast, _NSM() );
|
||
|
||
return 0;
|
||
}
|
||
|
||
#endif /* NSM_H */
|