source: roaraudio/libroar/serverinfo.c @ 5372:63f373fa5790

Last change on this file since 5372:63f373fa5790 was 5372:63f373fa5790, checked in by phi, 12 years ago

added support for ITST "build"

File size: 7.6 KB
Line 
1//serverinfo.c:
2
3/*
4 *      Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2010-2011
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
38struct ie {
39 int type;
40 size_t len;
41 const char * buf;
42};
43
44struct roar_server_info * roar_server_info(struct roar_connection * con) {
45 struct roar_server_info * ret;
46 struct roar_message mes;
47 uint16_t * d16;
48 char * data = NULL;
49
50 memset(&mes, 0, sizeof(mes));
51
52 mes.cmd = ROAR_CMD_SERVER_INFO;
53 mes.datalen = 2*2;
54 d16 = (uint16_t*)mes.data;
55
56 d16[0] = ROAR_HOST2NET16(0); // version
57 d16[1] = ROAR_HOST2NET16(ROAR_IT_SERVER);
58
59 if ( roar_req(con, &mes, &data) != 0 )
60  return NULL;
61
62 if ( mes.cmd != ROAR_CMD_OK )
63  return NULL;
64
65 ret = roar_server_info_from_mes(&mes, data);
66
67 if ( data != NULL )
68  roar_mm_free(data);
69
70 return ret;
71}
72
73int roar_server_info_free(struct roar_server_info * info) {
74 if ( info == NULL )
75  return -1;
76
77 roar_mm_free(info);
78
79 return 0;
80}
81
82#define _add(t, m) do { if ( info->m != NULL && (sl = strlen(info->m)) != 0 ) { iebuf[idx].type = (t); iebuf[idx].len = sl; iebuf[idx].buf = (info->m); idx++; needlen += 4 + sl; } } while (0)
83
84int roar_server_info_to_mes(struct roar_message * mes, struct roar_server_info * info, void ** data) {
85 size_t needlen = 4;
86 size_t sl;
87 int idx = 0;
88 struct ie iebuf[sizeof(struct roar_server_info)/sizeof(char*)];
89 uint16_t * d16, * dptr;
90 char * textpart;
91 int i;
92 char * mesdata;
93
94 if ( mes == NULL || info == NULL )
95  return -1;
96
97 _add(ROAR_ITST_VERSION, version);
98 _add(ROAR_ITST_LOCATION, location);
99 _add(ROAR_ITST_DESCRIPTION, description);
100 _add(ROAR_ITST_CONTACT, contact);
101 _add(ROAR_ITST_SERIAL, serial);
102 _add(ROAR_ITST_ADDRESS, address);
103 _add(ROAR_ITST_UIURL, uiurl);
104 _add(ROAR_ITST_LICENSE, license);
105 _add(ROAR_ITST_HOSTID, hostid);
106 _add(ROAR_ITST_BUILD, build);
107 _add(ROAR_ITST_UN_SYSNAME, un.sysname);
108 _add(ROAR_ITST_UN_RELEASE, un.release);
109 _add(ROAR_ITST_UN_NODENAME, un.nodename);
110 _add(ROAR_ITST_UN_MACHINE, un.machine);
111
112 if ( needlen > LIBROAR_BUFFER_MSGDATA ) {
113  if ( data == NULL )
114   return -1;
115
116  mesdata = roar_mm_malloc(needlen);
117
118  if ( mesdata == NULL )
119   return -1;
120
121  *data = mesdata;
122 } else {
123  mesdata = mes->data;
124 }
125
126 memset(mes, 0, sizeof(struct roar_message));
127
128 mes->datalen = needlen;
129
130 d16 = (uint16_t*)mesdata;
131
132 mesdata[0] = 0; // version
133 mesdata[1] = 0; // reserved
134
135 d16[1] = ROAR_HOST2NET16(idx);
136
137 dptr = &(d16[2]);
138
139 for (i = 0; i < idx; i++) {
140  dptr[0] = ROAR_HOST2NET16(iebuf[i].type & 0xFF);
141  dptr[1] = ROAR_HOST2NET16(iebuf[i].len);
142  dptr += 2;
143 }
144
145 textpart = mesdata + (4 + 4*idx);
146
147 for (i = 0; i < idx; i++) {
148  memcpy(textpart, iebuf[i].buf, iebuf[i].len);
149  textpart += iebuf[i].len;
150 }
151
152 return 0;
153}
154
155struct roar_server_info * roar_server_info_from_mes(struct roar_message * mes, void * data) {
156 struct ie iebuf[sizeof(struct roar_server_info)/sizeof(char*)];
157 struct ie * ieptr;
158 struct roar_server_info * ret = NULL;
159 uint16_t * d16, * dptr;
160 size_t idx;
161 size_t i;
162 size_t needlen = 4;
163 char * textpart;
164 char * textbuf;
165 const char ** tptr;
166 char * mesdata;
167
168 ROAR_DBG("roar_server_info(mes=%p{.datalen=%llu) = ?", mes, (long long unsigned int)mes->datalen);
169
170 if ( mes == NULL )
171  return NULL;
172
173 if ( data == NULL ) {
174  mesdata = mes->data;
175 } else {
176  mesdata = data;
177 }
178
179 memset(iebuf, 0, sizeof(iebuf));
180
181 ROAR_DBG("roar_server_info(mes=%p) = ?", mes);
182
183 // some basic texts like version:
184 if ( mes->datalen < needlen )
185  return NULL;
186
187 ROAR_DBG("roar_server_info(mes=%p) = ?", mes);
188
189 if ( mesdata[0] != 0 ) /* version */
190  return NULL;
191
192 ROAR_DBG("roar_server_info(mes=%p) = ?", mes);
193
194 if ( mesdata[1] != 0 ) /* reserved */
195  return NULL;
196
197 ROAR_DBG("roar_server_info(mes=%p) = ?", mes);
198
199 d16 = (uint16_t*)mesdata;
200
201 idx = ROAR_NET2HOST16(d16[1]);
202
203 ROAR_DBG("roar_server_info(mes=%p): idx=%i", mes, idx);
204
205 // return error if our index buffer is too short.
206 if ( idx > (sizeof(iebuf)/sizeof(*iebuf)) )
207  return NULL;
208
209 ROAR_DBG("roar_server_info(mes=%p) = ?", mes);
210
211 ROAR_DBG("roar_server_info(mes=%p): needlen=%llu", mes, (long long unsigned int)needlen);
212
213 needlen += 4*idx;
214
215 // recheck if we have a complet index.
216 if ( mes->datalen < needlen )
217  return NULL;
218
219 ROAR_DBG("roar_server_info(mes=%p) = ?", mes);
220
221 d16 = (uint16_t*)mesdata;
222 dptr = &(d16[2]);
223
224 textpart = mesdata + (4 + 4*idx);
225
226 ROAR_DBG("roar_server_info(mes=%p): needlen=%llu", mes, (long long unsigned int)needlen);
227
228 for (i = 0; i < idx; i++) {
229  iebuf[i].type = ROAR_NET2HOST16(dptr[0]) & 0xFF;
230  iebuf[i].len  = ROAR_NET2HOST16(dptr[1]);
231  iebuf[i].buf  = textpart;
232  needlen  += iebuf[i].len;
233  textpart += iebuf[i].len;
234  dptr += 2;
235  ROAR_DBG("roar_server_info(mes=%p): iebuf[i]={.len=%llu,...}", mes, (long long unsigned int)iebuf[i].len);
236 }
237
238 ROAR_DBG("roar_server_info(mes=%p): needlen=%llu", mes, (long long unsigned int)needlen);
239
240 // recheck if we have all the data...
241 if ( mes->datalen < needlen )
242  return NULL;
243
244 ROAR_DBG("roar_server_info(mes=%p) = ?", mes);
245
246 // alloc the needed space. this can be reduced in future to the actual needed value.
247 ret = roar_mm_malloc(2*sizeof(struct roar_server_info) + mes->datalen);
248
249 if ( ret == NULL )
250  return NULL;
251
252 ROAR_DBG("roar_server_info(mes=%p) = ?", mes);
253
254 // for the size see the alloc call above.
255 memset(ret, 0, 2*sizeof(struct roar_server_info) + mes->datalen);
256
257 textbuf = (char*)ret + sizeof(struct roar_server_info);
258
259 for (i = 0; i < idx; i++) {
260  ieptr = &(iebuf[i]);
261
262   // ignore empty fields
263  if ( ieptr->len == 0 )
264   continue;
265  if ( ieptr->len == 1 && ieptr->buf[0] == 0 )
266   continue;
267
268#define _ck(TYPE,member) case TYPE: tptr = &(ret->member); break;
269  switch (ieptr->type) {
270   _ck(ROAR_ITST_VERSION, version);
271   _ck(ROAR_ITST_LOCATION, location);
272   _ck(ROAR_ITST_DESCRIPTION, description);
273   _ck(ROAR_ITST_CONTACT, contact);
274   _ck(ROAR_ITST_SERIAL, serial);
275   _ck(ROAR_ITST_ADDRESS, address);
276   _ck(ROAR_ITST_UIURL, uiurl);
277   _ck(ROAR_ITST_HOSTID, hostid);
278   _ck(ROAR_ITST_LICENSE, license);
279   _ck(ROAR_ITST_BUILD, build);
280   _ck(ROAR_ITST_UN_SYSNAME, un.sysname);
281   _ck(ROAR_ITST_UN_RELEASE, un.release);
282   _ck(ROAR_ITST_UN_NODENAME, un.nodename);
283   _ck(ROAR_ITST_UN_MACHINE, un.machine);
284   default:
285     continue;
286    break;
287  }
288#undef _ck
289
290  *tptr = textbuf;
291   memcpy(textbuf, ieptr->buf, ieptr->len);
292   textbuf += ieptr->len;
293   *textbuf = 0; // set \0
294   textbuf++;
295 }
296
297 ROAR_DBG("roar_server_info(mes=%p) = %p", mes, ret);
298
299 return ret;
300}
301
302
303//ll
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