source: roaraudio/libroar/basic.c @ 5471:fb8f0a2d1558

Last change on this file since 5471:fb8f0a2d1558 was 5471:fb8f0a2d1558, checked in by phi, 12 years ago

added support for +default

File size: 18.6 KB
Line 
1//basic.c:
2
3/*
4 *      Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008-2012
5 *
6 *  This file is part of libroar a part of RoarAudio,
7 *  a cross-platform sound system for both, home and professional use.
8 *  See README for details.
9 *
10 *  This file is free software; you can redistribute it and/or modify
11 *  it under the terms of the GNU General Public License version 3
12 *  as published by the Free Software Foundation.
13 *
14 *  libroar is distributed in the hope that it will be useful,
15 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
16 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17 *  GNU General Public License for more details.
18 *
19 *  You should have received a copy of the GNU General Public License
20 *  along with this software; see the file COPYING.  If not, write to
21 *  the Free Software Foundation, 51 Franklin Street, Fifth Floor,
22 *  Boston, MA 02110-1301, USA.
23 *
24 *  NOTE for everyone want's to change something and send patches:
25 *  read README and HACKING! There a addition information on
26 *  the license of this document you need to read before you send
27 *  any patches.
28 *
29 *  NOTE for uses of non-GPL (LGPL,...) software using libesd, libartsc
30 *  or libpulse*:
31 *  The libs libroaresd, libroararts and libroarpulse link this lib
32 *  and are therefore GPL. Because of this it may be illigal to use
33 *  them with any software that uses libesd, libartsc or libpulse*.
34 */
35
36#include "libroar.h"
37
38static int _start_server(struct roar_connection * con, const char * server, int type, int flags, uint_least32_t timeout) {
39#if !defined(ROAR_TARGET_WIN32) && !defined(ROAR_TARGET_MICROCONTROLLER)
40 enum {
41  NORMAL = 0,
42  SYSTEM = 1
43 } mode = NORMAL;
44 const char * daemonimage = NULL;
45 int socks[2];
46 int r;
47 char fhstr[12];
48
49 if ( !strncmp(server, "+fork=", 6) ) {
50  server += 6;
51  if ( server[0] == 0 ) {
52   // no special case, we just ignore it.
53  } else if ( server[0] == 'd' && server[1] == ':' ) {
54   server += 2;
55   daemonimage = server;
56  } else if ( server[0] == '!' ) {
57   server += 1;
58   daemonimage = server;
59   mode = SYSTEM;
60  } else {
61   roar_err_set(ROAR_ERROR_ILLSEQ);
62   return -1;
63  }
64 }
65
66 if ( daemonimage == NULL )
67  daemonimage = roar_libroar_get_config()->daemonimage;
68
69 // we keep this step to be compatible with older versions.
70 if ( daemonimage == NULL || *daemonimage == 0 ) {
71  daemonimage = getenv("ROAR_DAEMONIMAGE");
72  if ( daemonimage != NULL ) {
73   ROAR_WARN("_start_server(*): Usage of $ROAR_DAEMONIMAGE is obsolete. Use ROAR_OPTIONS=daemonimage:...");
74  }
75 }
76
77 if ( daemonimage == NULL || *daemonimage == 0 )
78  daemonimage = "roard";
79
80 if ( socketpair(AF_UNIX, SOCK_STREAM, 0, socks) == -1 ) {
81  roar_err_from_errno();
82  return -1;
83 }
84
85 r = roar_fork(NULL);
86
87 if ( r == -1 ) { // error!
88  ROAR_ERR("_start_server(*): Can not fork: %s", roar_error2str(roar_error));
89  close(socks[0]);
90  close(socks[1]);
91  return -1;
92 } else if ( r == 0 ) { // we are the child
93  close(socks[0]);
94
95  close(ROAR_STDIN ); // we do not want roard to have any standard input
96  close(ROAR_STDOUT); // STDOUT is also not needed, so we close it,
97                      // but STDERR we keep open for error messages.
98
99  snprintf(fhstr, sizeof(fhstr), "%i", socks[1]);
100
101  switch (mode) {
102   case NORMAL:
103     execlp(daemonimage, daemonimage, "--no-listen", "--client-fh", fhstr, (_LIBROAR_GOOD_CAST char*)NULL);
104    break;
105   case SYSTEM:
106     dup2(socks[1], ROAR_STDIN );
107     dup2(socks[1], ROAR_STDOUT);
108     execl("/bin/sh", "/bin/sh", "-c", daemonimage, (_LIBROAR_GOOD_CAST char*)NULL);
109     execlp("sh", "sh", "-c", daemonimage, (_LIBROAR_GOOD_CAST char*)NULL);
110    break;
111  }
112
113  // we are still alive?
114  ROAR_ERR("_start_server(*): alive after exec(), that's bad!");
115  _exit(1);
116 } else { // we are the parent
117  close(socks[1]);
118  if ( roar_vio_open_fh_socket(con->viocon, socks[0]) == -1 ) {
119   close(socks[0]);
120   return -1;
121  } else {
122   con->flags |= ROAR_CON_FLAGS_VIO;
123  }
124  return 0;
125 }
126
127 return -1;
128#else
129 ROAR_ERR("_start_server(*): There is no UNIX Domain Socket support in win32, download a real OS.");
130 return -1;
131#endif
132}
133
134static int _connect_internal(struct roar_connection * con, const char * server, int type, int flags, uint_least32_t timeout) {
135 struct roar_libroar_config * config = roar_libroar_get_config();
136 struct roar_vio_calls * vio;
137
138 if ( config->connect_internal != NULL ) {
139  vio = config->connect_internal(con, server, type, flags, timeout);
140  if ( vio == NULL )
141   return -1;
142
143  con->viocon = vio;
144  con->flags |= ROAR_CON_FLAGS_VIO;
145
146  return 0;
147 }
148
149 roar_err_set(ROAR_ERROR_BADHOST);
150 return -1;
151}
152
153static int _connect_server(struct roar_connection * con, const char * server, int type, int flags, uint_least32_t timeout) {
154#if defined(ROAR_HAVE_STAT) && defined(ROAR_HAVE_H_SYS_STAT)
155 struct stat sockstat;
156#endif
157 const char * obj = NULL;
158 char user_sock[128];
159 int is_decnet = 0;
160 int port = 0;
161 int i = 0;
162 int fh = -1;
163 int err;
164
165 if ( con == NULL || server == NULL ) {
166  roar_err_set(ROAR_ERROR_FAULT);
167  return -1;
168 }
169
170 if ( !strcmp(server, "+invalid") ) {
171  roar_err_set(ROAR_ERROR_CANCELED);
172  return -1;
173 } else if ( !strncmp(server, "+dstr=", 6) ) {
174  if ( roar_vio_open_dstr_simple(con->viocon, server+6, ROAR_VIOF_READWRITE) == -1 )
175   return -1;
176  con->flags |= ROAR_CON_FLAGS_VIO;
177  return 0;
178 } else if ( !strcmp(server, "+fork") || !strncmp(server, "+fork=", 6) ) {
179  return _start_server(con, server, type, flags, timeout);
180 } else if ( !strcmp(server, "+internal") || !strncmp(server, "+internal=", 10) ) {
181  return _connect_internal(con, server, type, flags, timeout);
182 }
183
184 strncpy(user_sock, server, sizeof(user_sock)-1);
185 user_sock[sizeof(user_sock)-1] = 0;
186
187
188 if ( *user_sock != '/' ) { // don't test AF_UNIX sockets for ports
189  for (i = 0; user_sock[i] != 0; i++) {
190   if ( user_sock[i] == ':' ) {
191    if ( user_sock[i+1] == ':' ) { // DECnet, leave unchanged
192     is_decnet = 1;
193     obj = &user_sock[i+2];
194     break;
195    }
196
197    port = atoi(&(user_sock[i+1]));
198    user_sock[i] = 0;
199    break;
200   }
201  }
202 }
203
204 if ( is_decnet ) {
205  if ( *user_sock == ':' ) {
206   if ( roar_socket_get_local_nodename() != NULL ) {
207    strncpy(user_sock, roar_socket_get_local_nodename(), sizeof(user_sock)-1);
208    user_sock[sizeof(user_sock)-1] = 0;
209    roar_mm_strlcat(user_sock, server, sizeof(user_sock)-1);
210    user_sock[sizeof(user_sock)-1] = 0;
211    obj  = strstr(user_sock, "::");
212    obj += 2;
213   }
214  }
215
216  if ( *obj == 0 ) {
217#ifdef DN_MAXOBJL
218   roar_mm_strlcat(user_sock, ROAR_DEFAULT_OBJECT, sizeof(user_sock)-1);
219   user_sock[sizeof(user_sock)-1] = 0;
220#else
221   ROAR_ERR("roar_connect_raw(*): size of DECnet object unknown.");
222#endif
223  }
224   ROAR_DBG("roar_connect_raw(*): user_sock='%s'", user_sock);
225 }
226
227 if ( port || is_decnet ) {
228  fh = roar_socket_connect(type, user_sock, port);
229  // restore the original string
230  user_sock[i] = ':';
231 } else {
232#if defined(ROAR_HAVE_STAT) && defined(ROAR_HAVE_H_SYS_STAT)
233  if ( user_sock[0] == '/' ) {
234   if ( stat(user_sock, &sockstat) == 0 ) {
235    if ( S_ISCHR(sockstat.st_mode) ) {
236#ifdef O_NOCTTY
237     fh = open(user_sock, O_RDWR|O_NOCTTY, 0666);
238#else
239     fh = open(user_sock, O_RDWR, 0666);
240#endif
241    }
242   }
243  }
244#endif
245  if ( fh == -1 )
246   fh = roar_socket_connect(type, user_sock, ROAR_DEFAULT_PORT);
247 }
248
249 if ( fh == -1 )
250  return -1;
251
252 if ( roar_vio_open_fh_socket(con->viocon, fh) == -1 ) {
253  err = roar_error;
254#ifdef ROAR_TARGET_WIN32
255  closesocket(fh);
256#else
257  close(fh);
258#endif
259  roar_error = err;
260  return -1;
261 } else {
262  con->flags |= ROAR_CON_FLAGS_VIO;
263 }
264
265 roar_err_set(ROAR_ERROR_NONE);
266 return 0;
267}
268
269static int roar_connect_raw (struct roar_connection * con, const char * server, int flags, uint_least32_t timeout) {
270#ifdef ROAR_HAVE_LIBSLP
271 struct roar_libroar_config * config = roar_libroar_get_config();
272#endif
273#if defined(ROAR_HAVE_UNIX) || !defined(ROAR_TARGET_MICROCONTROLLER)
274 char user_sock[128];
275 char * roar_server;
276#endif
277#if defined(ROAR_HAVE_LIBSLP) || !defined(ROAR_TARGET_MICROCONTROLLER)
278 int i = 0;
279#endif
280#if !defined(ROAR_TARGET_WIN32) && !defined(ROAR_TARGET_MICROCONTROLLER)
281 struct passwd * pwd;
282#endif
283#ifdef ROAR_HAVE_LIBDNET
284 struct stat decnet_stat;
285#endif
286#ifdef ROAR_HAVE_LIBX11
287 struct roar_x11_connection * x11con;
288#endif
289#ifdef ROAR_HAVE_LIBSLP
290 struct roar_server * list;
291 int workarounds_store;
292#endif
293
294 roar_err_set(ROAR_ERROR_UNKNOWN);
295
296 if ( timeout != 0 ) {
297  roar_err_set(ROAR_ERROR_INVAL);
298  return -1;
299 }
300
301 if ( flags & ROAR_ENUM_FLAG_HARDNONBLOCK )
302  flags |= ROAR_ENUM_FLAG_NONBLOCK;
303
304
305 if ( server == NULL || *server == 0 )
306  server = roar_libroar_get_server();
307
308 if ( server == NULL || *server == 0 )
309  server = getenv("ROAR_SERVER");
310
311#ifdef ROAR_HAVE_LIBX11
312 if ( server == NULL || *server == 0 ) {
313  if ( (x11con = roar_x11_connect(NULL)) != NULL ) {
314   server = roar_x11_get_prop(x11con, "ROAR_SERVER");
315   roar_x11_disconnect(x11con);
316  }
317 }
318#endif
319
320#if !defined(ROAR_TARGET_WIN32) && !defined(ROAR_TARGET_MICROCONTROLLER)
321 if ( (server == NULL || *server == 0) && (i = readlink("/etc/roarserver", user_sock, sizeof(user_sock)-1)) != -1 ) {
322   user_sock[i] = 0;
323   server = user_sock;
324 }
325#endif
326
327 if ( server != NULL && !strcasecmp(server, "+slp") ) {
328  server = roar_slp_find_roard(0);
329  if ( server == NULL ) {
330   return -1;
331  }
332 }
333
334 // "+default" is an alias for NULL.
335 if ( server != NULL && !strcasecmp(server, "+default") ) {
336  server = NULL;
337 }
338
339 if ( server == NULL || *server == 0 ) {
340  /* connect via defaults */
341
342#ifdef ROAR_HAVE_UNIX
343#ifndef ROAR_TARGET_MICROCONTROLLER
344  roar_server = getenv("HOME");
345#else
346  roar_server = NULL;
347#endif
348
349  if ( roar_server == NULL ) {
350#if !defined(ROAR_TARGET_WIN32) && !defined(ROAR_TARGET_MICROCONTROLLER)
351   if ( (pwd = getpwuid(getuid())) == NULL ) {
352    roar_server = "/NX-HOME-DIR";
353   } else {
354    roar_server = pwd->pw_dir;
355   }
356#else
357   roar_server = "/WIN32-SUCKS";
358#endif
359  }
360
361  snprintf(user_sock, sizeof(user_sock)-1, "%s/%s", roar_server, ROAR_DEFAULT_SOCK_USER);
362  user_sock[sizeof(user_sock)-1] = 0;
363
364  if ( _connect_server(con, user_sock, ROAR_SOCKET_TYPE_UNIX, flags, timeout) == 0 )
365   return 0;
366
367  if ( _connect_server(con, ROAR_DEFAULT_SOCK_GLOBAL, ROAR_SOCKET_TYPE_UNIX, flags, timeout) == 0 )
368   return 0;
369#endif
370
371  if ( _connect_server(con, ROAR_DEFAULT_HOSTPORT, ROAR_SOCKET_TYPE_TCP, flags, timeout) == 0 )
372   return 0;
373
374#ifdef ROAR_HAVE_LIBDNET
375  if ( stat(ROAR_PROC_NET_DECNET, &decnet_stat) == 0 ) {
376   if ( roar_socket_get_local_nodename() ) {
377    snprintf(user_sock, 79, "%s::%s", roar_socket_get_local_nodename(), ROAR_DEFAULT_OBJECT);
378    if ( _connect_server(con, user_sock, ROAR_SOCKET_TYPE_DECNET, flags, timeout) == 0 )
379     return 0;
380   }
381  }
382#endif
383
384  if ( _connect_server(con, "+abstract", ROAR_SOCKET_TYPE_UNKNOWN, flags, timeout) == 0 )
385   return 0;
386
387#ifdef ROAR_HAVE_LIBSLP
388 if ( !(config->workaround.workarounds & ROAR_LIBROAR_CONFIG_WAS_NO_SLP) &&
389      !(flags & ROAR_ENUM_FLAG_NONBLOCK) &&
390      !(flags & ROAR_ENUM_FLAG_LOCALONLY)
391    ) {
392  if ( (server = roar_slp_find_roard(0)) != NULL ) {
393   if ( _connect_server(con, server, ROAR_SOCKET_TYPE_UNKNOWN, 0, 0) == 0 )
394    return 0;
395
396   /* in case we can not connect to the server given this may be a cache problem,
397      we do a new lookup with the cache disabled in this case                     */
398   ROAR_WARN("roar_connect_raw(*): Can not connect to SLP located server, disabling cache");
399   if ( (server = roar_slp_find_roard(1)) != NULL )
400    if ( _connect_server(con, server, ROAR_SOCKET_TYPE_UNKNOWN, 0, 0) == 0 )
401     return 0;
402  }
403 }
404
405 workarounds_store = config->workaround.workarounds;
406 config->workaround.workarounds |= ROAR_LIBROAR_CONFIG_WAS_NO_SLP;
407 list = roar_enum_servers(flags, -1, -1);
408 config->workaround.workarounds = workarounds_store;
409 if ( list != NULL ) {
410  for (i = 0; list[i].server != NULL; i++) {
411   if ( _connect_server(con, list[i].server, ROAR_SOCKET_TYPE_UNKNOWN, 0, 0) == 0 ) {
412    roar_enum_servers_free(list);
413    return 0;
414   }
415  }
416  roar_enum_servers_free(list);
417 }
418#endif
419
420 return -1;
421
422 } else {
423  /* connect via (char*)server */
424  if ( _connect_server(con, server, ROAR_SOCKET_TYPE_UNKNOWN, flags, timeout) != 0 )
425   return -1;
426  return 0;
427 }
428
429 roar_err_set(ROAR_ERROR_NODEV);
430 ROAR_DBG("roar_connect_raw(*) = -1 // error=NODEV");
431 return -1;
432}
433
434int roar_connect     (struct roar_connection * con, const char * server, int flags, uint_least32_t timeout) {
435 struct roar_libroar_config * config = roar_libroar_get_config();
436
437 if ( con == NULL ) {
438  roar_err_set(ROAR_ERROR_FAULT);
439  return -1;
440 }
441
442 if ( roar_connect_none(con) == -1 )
443  return -1;
444
445 roar_err_set(ROAR_ERROR_UNKNOWN);
446 if ( roar_connect_raw(con, server, flags | config->serverflags, timeout) == -1 )
447  return -1;
448
449 // TODO: this should be moved to be within _connect_server() so it also stores server names of auto located servers.
450 if ( server != NULL ) {
451  con->server_name = roar_mm_strdup(server);
452 }
453
454 return 0;
455}
456
457int roar_connect_none (struct roar_connection * con) {
458 struct roar_libroar_config * config = roar_libroar_get_config();
459
460 if ( con == NULL ) {
461  roar_err_set(ROAR_ERROR_INVAL);
462  return -1;
463 }
464
465 memset(con, 0, sizeof(struct roar_connection));
466 con->refc        = 1;
467 con->flags       = ROAR_CON_FLAGS_ISCLIENT;
468 con->version     = _ROAR_MESSAGE_VERSION;
469 con->cb_userdata = NULL;
470 con->cb          = NULL;
471 con->server_stds = NULL;
472 con->server_name = NULL;
473
474 roar_err_init(&(con->errorframe));
475
476 con->viocon = &(con->viocon_store);
477
478// con->flags |= ROAR_CON_FLAGS_VIO;
479
480 if ( config->protocolversion != -1 )
481  roar_set_connection_version(con, config->protocolversion);
482
483 roar_err_set(ROAR_ERROR_NONE);
484 return 0;
485}
486
487int roar_connect_vio (struct roar_connection * con, struct roar_vio_calls * vio) {
488 if ( con == NULL || vio == NULL ) {
489  roar_err_set(ROAR_ERROR_INVAL);
490  return -1;
491 }
492
493 if ( roar_connect_none(con) == -1 )
494  return -1;
495
496 con->viocon = vio;
497 con->flags |= ROAR_CON_FLAGS_VIO;
498
499 return -1;
500}
501
502int roar_connect_fh (struct roar_connection * con, int fh) {
503
504 if ( con == NULL || fh == -1 ) {
505  roar_err_set(ROAR_ERROR_INVAL);
506  return -1;
507 }
508
509 if ( roar_connect_none(con) == -1 )
510  return -1;
511
512 // specal hack to set an ilegal value used internaly in libroar:
513 if ( fh == -2 )
514  fh = -1;
515
516 if ( roar_vio_open_fh_socket(con->viocon, fh) != -1 ) {
517  con->flags |= ROAR_CON_FLAGS_VIO;
518 }
519
520 roar_err_set(ROAR_ERROR_NONE);
521 return 0;
522}
523
524int roar_get_connection_fh (struct roar_connection * con) {
525 int fh;
526
527 ROAR_DBG("roar_get_connection_fh(con=%p) = ?", con);
528
529 roar_debug_warn_sysio("roar_get_connection_fh", "roar_get_connection_vio2", NULL);
530
531 if ( con == NULL )
532  return -1;
533
534 ROAR_DBG("roar_get_connection_fh(con=%p) = ?", con);
535
536 if ( roar_vio_ctl(con->viocon, ROAR_VIO_CTL_GET_FH, &fh) == -1 )
537  return -1;
538
539 ROAR_DBG("roar_get_connection_fh(con=%p) = %i", con, fh);
540
541 return fh;
542}
543
544struct roar_vio_calls * roar_get_connection_vio2 (struct roar_connection * con) {
545 if ( con == NULL )
546  return NULL;
547
548 if ( con->flags & ROAR_CON_FLAGS_VIO )
549  return con->viocon;
550
551// TODO: try to open the VIO.
552
553 return NULL;
554}
555
556const char * roar_get_connection_server(struct roar_connection * con) {
557 if ( con == NULL ) {
558  roar_err_set(ROAR_ERROR_FAULT);
559  return NULL;
560 }
561
562 return con->server_name;
563}
564
565int roar_connectionref(struct roar_connection * con) {
566 if ( con == NULL ) {
567  roar_err_set(ROAR_ERROR_FAULT);
568  return -1;
569 }
570
571 con->refc++;
572
573 return 0;
574}
575
576int roar_connectionunref(struct roar_connection * con) {
577 struct roar_vio_calls * vio;
578 struct roar_message m;
579
580 if ( con == NULL ) {
581  roar_err_set(ROAR_ERROR_FAULT);
582  return -1;
583 }
584
585 con->refc--;
586
587 if ( con->refc )
588  return 0;
589
590 memset(&m, 0, sizeof(m));
591
592 m.datalen =  0;
593 m.stream  = -1;
594 m.pos     =  0;
595 m.cmd     = ROAR_CMD_QUIT;
596
597 roar_req(con, &m, NULL);
598
599 if ( (vio = roar_get_connection_vio2(con)) != NULL ) {
600  roar_vio_close(vio);
601 }
602
603 if ( con->server_stds != NULL ) {
604  roar_stds_free(con->server_stds);
605  con->server_stds = NULL;
606 }
607
608 if ( con->server_name != NULL ) {
609  roar_mm_free(con->server_name);
610  con->server_name = NULL;
611 }
612
613 if ( con->flags & ROAR_CON_FLAGS_FREESELF ) {
614  roar_mm_free(con);
615 } else {
616  roar_connect_fh(con, -2);
617 }
618
619 return 0;
620}
621
622int roar_set_connection_callback(struct roar_connection * con,
623                                 void (*cb)(struct roar_connection * con,
624                                            struct roar_message    * mes,
625                                            void                   * data,
626                                            void                   * userdata),
627                                 void * userdata) {
628 if ( con == NULL ) {
629  roar_err_set(ROAR_ERROR_FAULT);
630  return -1;
631 }
632
633 con->cb       = cb;
634 con->cb_userdata = userdata;
635
636 return 0;
637}
638
639int roar_set_connection_version(struct roar_connection * con, int version) {
640 if ( con == NULL ) {
641  roar_err_set(ROAR_ERROR_FAULT);
642  return -1;
643 }
644
645 if ( version == -1 )
646  version = _ROAR_MESSAGE_VERSION;
647
648 if ( version < 0 ) {
649  roar_err_set(ROAR_ERROR_INVAL);
650  return -1;
651 }
652
653 con->version = version;
654
655 if ( version == 2 ) {
656  con->flags |= ROAR_CON_FLAGS_SUPPORT_V2;
657 }
658
659 return 0;
660}
661
662int16_t roar_message_genseq(struct roar_connection * con, int is_client) {
663 static int16_t store = 0;
664 int16_t ret = 0;
665
666 ret = store++;
667
668 if ( ret == 0 )
669  ret = store++;
670
671 if ( is_client == -1 ) {
672  if ( con != NULL ) {
673   is_client = con->flags & ROAR_CON_FLAGS_ISCLIENT ? 1 : 0;
674  }
675 }
676
677 if ( is_client == -1 )
678  is_client = 1;
679
680 ret |= 0x8000U;
681 if ( !is_client )
682  ret -= 0x8000U;
683
684 return ret;
685}
686
687int roar_sync         (struct roar_connection * con) {
688 // wait for any non-client reqs
689 return roar_wait_msg(con, 0x0000, 0x8000);
690}
691
692int roar_wait_msg     (struct roar_connection * con, int16_t seq, int16_t seqmask) {
693 roar_err_set(ROAR_ERROR_NOSYS);
694 return -1;
695}
696
697int roar_noop         (struct roar_connection * con) {
698 struct roar_message mes;
699
700 if ( con == NULL ) {
701  roar_err_set(ROAR_ERROR_FAULT);
702  return -1;
703 }
704
705 memset(&mes, 0, sizeof(mes));
706
707 mes.cmd = ROAR_CMD_NOOP;
708 mes.stream = -1;
709
710 return roar_req3(con, &mes, NULL);
711}
712
713int roar_identify   (struct roar_connection * con, const char * name) {
714 struct roar_message mes;
715 uint32_t pid;
716 int max_len;
717
718 roar_err_set(ROAR_ERROR_UNKNOWN);
719
720 ROAR_DBG("roar_identify(*): try to identify myself...");
721
722 memset(&mes, 0, sizeof(mes));
723
724 mes.cmd    = ROAR_CMD_IDENTIFY;
725 mes.stream = -1;
726 mes.pos    =  0;
727
728 ROAR_DBG("roar_identify(*): name=%p", name);
729
730 if ( name == NULL )
731  name = "libroar client";
732
733 ROAR_DBG("roar_identify(*): name=%p", name);
734
735 max_len = roar_mm_strlen(name);
736 ROAR_DBG("roar_identify(*): strlen(name) = %i", max_len);
737
738 if ( max_len > (LIBROAR_BUFFER_MSGDATA - 5) )
739  max_len = LIBROAR_BUFFER_MSGDATA - 5;
740
741 mes.datalen = 5 + max_len;
742 mes.data[0] = 1;
743
744 pid = getpid();
745 mes.data[1] = (pid & 0xFF000000UL) >> 24;
746 mes.data[2] = (pid & 0x00FF0000UL) >> 16;
747 mes.data[3] = (pid & 0x0000FF00UL) >>  8;
748 mes.data[4] = (pid & 0x000000FFUL) >>  0;
749 ROAR_DBG("roar_identify(*): pid = %i", (int)pid);
750
751 strncpy(mes.data+5, name, max_len);
752
753 return roar_req3(con, &mes, NULL);
754}
755
756//ll
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