source: roaraudio/libroar/enumdev.c @ 4414:7a363907e859

Last change on this file since 4414:7a363907e859 was 4414:7a363907e859, checked in by phi, 8 years ago

added SLP support to server enum

File size: 6.3 KB
Line 
1//enumdev.c:
2
3/*
4 *      Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2010
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
38// TODO: we should put all the data in one big alloced block.
39
40static int _test_server(struct roar_server * c, int flags) {
41 struct roar_connection con;
42 if ( c->server == NULL )
43  return -1;
44
45 if ( flags & ROAR_ENUM_FLAG_NONBLOCK )
46  return 0;
47
48 if ( roar_connect(&con, (char*)c->server) == -1 )
49  return -1;
50
51 roar_disconnect(&con);
52
53 return 0;
54}
55
56#define _add(x) if ( (x) != NULL ) servers[ret++] = roar_mm_strdup((x))
57static ssize_t _esl_defaults(int flags, int dir, int socktype, char ** servers, size_t maxlen) {
58#ifdef ROAR_HAVE_LIBX11
59 struct roar_x11_connection * x11con;
60#endif
61 ssize_t ret = 0;
62 const char * new;
63 char buf[1024];
64 int i;
65
66 if ( maxlen < 10 )
67  return -1;
68
69 new = roar_libroar_get_server();
70 _add(new);
71
72 new = getenv("ROAR_SERVER");
73 _add(new);
74
75#ifdef ROAR_HAVE_LIBX11
76 if ( (x11con = roar_x11_connect(NULL)) != NULL ) {
77  new = roar_x11_get_prop(x11con, "ROAR_SERVER");
78  _add(new);
79  roar_x11_disconnect(x11con);
80 }
81#endif
82
83#if !defined(ROAR_TARGET_WIN32) && !defined(ROAR_TARGET_MICROCONTROLLER)
84 if ( (i = readlink("/etc/roarserver", buf, sizeof(buf)-1)) != -1 ) {
85   buf[i] = 0;
86   _add(buf);
87 }
88#endif
89
90 if ( (new = roar_env_get_home(0)) != NULL ) {
91  snprintf(buf, sizeof(buf)-1, "%s/%s", new, ROAR_DEFAULT_SOCK_USER);
92  buf[sizeof(buf)-1] = 0;
93  _add(buf);
94 }
95
96 servers[ret++] = roar_mm_strdup(ROAR_DEFAULT_SOCK_GLOBAL);
97 servers[ret++] = roar_mm_strdup(ROAR_DEFAULT_HOST);
98 servers[ret++] = roar_mm_strdup("::" ROAR_DEFAULT_OBJECT);
99 servers[ret++] = roar_mm_strdup("+abstract");
100 servers[ret++] = roar_mm_strdup("/tmp/muroard");
101
102 return ret;
103}
104
105static ssize_t _esl_slp(int flags, int dir, int socktype, char ** servers, size_t maxlen) {
106 struct roar_slp_cookie cookie;
107 int offset;
108 char * url;
109 size_t i;
110 ssize_t ret = 0;
111
112 if ( roar_slp_cookie_init(&cookie, NULL) == -1 )
113  return -1;
114
115 if ( roar_slp_search(&cookie, ROAR_SLP_URL_TYPE) == -1 )
116  return -1;
117
118 if ( cookie.matchcount == 0 )
119  return -1;
120
121 ROAR_DBG("_esl_slp(*): cookie.matchcount=%i", (int)cookie.matchcount);
122
123 for (i = 0; i < (size_t)cookie.matchcount && (ssize_t)maxlen > ret; i++) {
124  url = cookie.match[i].url;
125  ROAR_DBG("_esl_slp(*): cookie.match[%i].url='%s'", (int)i, url);
126
127  offset = 0;
128
129  if ( !strncmp(url, ROAR_SLP_URL_TYPE "://", ROAR_SLP_URL_TYPE_LEN + 3) )
130   offset = ROAR_SLP_URL_TYPE_LEN + 3;
131
132  ROAR_DBG("_esl_slp(*): url=%p, offset=%i", url, offset);
133  url = &(url[offset]);
134  ROAR_DBG("_esl_slp(*): url='%s'", url);
135
136  if ( *url == 0 )
137   continue;
138
139  _add(url);
140 }
141
142 return ret;
143}
144
145struct locmed {
146 int supflags;
147 ssize_t (*func)(int flags, int dir, int socktype, char ** servers, size_t maxlen);
148};
149
150static struct locmed _libroar_locmod[] = {
151 {ROAR_ENUM_FLAG_NONBLOCK|ROAR_ENUM_FLAG_HARDNONBLOCK, _esl_defaults},
152 {ROAR_ENUM_FLAG_NONE,                                 _esl_slp}
153};
154
155struct roar_server * roar_enum_servers(int flags, int dir, int socktype) {
156 struct roar_server * ret = NULL;
157 struct roar_server * c;
158 char * servers[64];
159 size_t have = 1;
160 size_t i, cp, unic;
161 ssize_t r;
162 int testflags = flags;
163 int is_uniq;
164
165 // load config:
166 roar_libroar_get_config();
167
168 if ( flags & ROAR_ENUM_FLAG_HARDNONBLOCK )
169  flags |= ROAR_ENUM_FLAG_NONBLOCK;
170
171 if ( testflags & ROAR_ENUM_FLAG_DESC )
172  testflags -= ROAR_ENUM_FLAG_DESC;
173 if ( testflags & ROAR_ENUM_FLAG_LOCATION )
174  testflags -= ROAR_ENUM_FLAG_LOCATION;
175
176 for (i = 0; i < sizeof(_libroar_locmod)/sizeof(*_libroar_locmod); i++) {
177  if ( (_libroar_locmod[i].supflags & testflags) == testflags ) {
178   r = _libroar_locmod[i].func(flags, dir, socktype, &(servers[have-1]), (sizeof(servers)/sizeof(*servers)) - have);
179   if ( r > 0 )
180    have += r;
181  }
182 }
183
184 ret = roar_mm_malloc(have*sizeof(struct roar_server));
185
186 if (ret == NULL)
187  return NULL;
188
189 have--;
190
191 for (i = cp = 0; i < have; i++) {
192  c = &(ret[cp]);
193  c->server = servers[i];
194  c->description = NULL;
195  c->location = NULL;
196
197  // uniq test:
198  is_uniq = 1;
199  for (unic = 0; unic < cp; unic++)
200   if ( !strcmp(ret[unic].server, servers[i]) )
201    is_uniq = 0;
202
203  if ( is_uniq && _test_server(c, flags) == 0 ) {
204   cp++;
205  } else {
206   roar_mm_free(servers[i]);
207  }
208 }
209
210 ret[cp].server = NULL;
211 ret[cp].description = roar_mm_strdup("Default server");
212 ret[cp].location = NULL;
213
214 return ret;
215}
216
217int roar_enum_servers_free(struct roar_server * servs) {
218 struct roar_server * c;
219 int i;
220
221 if ( servs == NULL )
222  return -1;
223
224 for (i = 0; (c = &(servs[i]))->server != NULL; i++) {
225  roar_mm_free((void*)c->server);
226  if ( c->description != NULL )
227   roar_mm_free((void*)c->description);
228  if ( c->location != NULL )
229   roar_mm_free((void*)c->location);
230 }
231
232 if ( c->description != NULL )
233  roar_mm_free((void*)c->description);
234 if ( c->location != NULL )
235  roar_mm_free((void*)c->location);
236
237 roar_mm_free(servs);
238
239 return 0;
240}
241
242ssize_t roar_enum_servers_num(struct roar_server * servs) {
243 size_t ret;
244
245 if ( servs == NULL )
246  return -1;
247
248 for (ret = 0; servs[ret].server != NULL; ret++);
249
250 return ret;
251}
252
253//ll
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