source: roaraudio/libroar/vio_proxy.c @ 5419:655954f5b684

Last change on this file since 5419:655954f5b684 was 5419:655954f5b684, checked in by phi, 10 years ago

fixed some compiler warnings

File size: 7.3 KB
Line 
1//vio_proxy.c:
2
3/*
4 *      Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2011-2012
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
38int roar_vio_proxy_init_def(struct roar_vio_defaults * def,
39                            char * dstr, enum roar_vio_proxy_type type,
40                            struct roar_vio_defaults * odef) {
41 int hint = -1;
42
43 (void)type; // TODO: generate hints from type.
44
45 ROAR_DBG("roar_vio_proxy_init_def(def=%p, dstr='%s', type=%i, odef=%p) = ?", def, dstr, (int)type, odef);
46
47 if ( roar_vio_dstr_init_defaults(def, ROAR_VIO_DEF_TYPE_SOCKET, O_RDWR, 0644) == -1 )
48  return -1;
49
50 if ( roar_vio_socket_init_dstr_def(def, dstr, hint, odef == NULL ? SOCK_STREAM : odef->d.socket.type, odef) == -1 ) {
51  ROAR_DBG("roar_vio_proxy_init_def(def=%p, dstr='%s', type=%i, odef=%p) = -1", def, dstr, (int)type, odef);
52  return -1;
53 }
54
55 ROAR_DBG("roar_vio_proxy_init_def(def=%p, dstr='%s', type=%i, odef=%p) = 0", def, dstr, (int)type, odef);
56 return 0;
57}
58
59static int roar_vio_proxy_ctl     (struct roar_vio_calls * vio, roar_vio_ctl_t cmd, void * data) {
60 if ( cmd == ROAR_VIO_CTL_GET_NAME ) {
61  *(char **)data = "proxy";
62  return 0;
63 }
64
65 return roar_vio_pass_ctl(vio, cmd, data);
66}
67
68static int init_socks4(struct roar_vio_calls * dst, enum roar_vio_proxy_type type, struct roar_vio_defaults * odef) {
69 char buf[9] = {
70  0x04,       // [0] Version
71  0x01,       // [1] mode=connect (listen is 0x02)
72  0, 0, 0, 0, // [2..5] host IP
73  0,          // [6] Port MSB
74  0,          // [7] Port LSB
75  0x00        // [8] EOS (\0) of username
76 };
77 enum roar_vio_proxy_type needed_type = ROAR_VIO_PROXY_INVALID;
78
79 ROAR_DBG("init_socks4(dst=%p, type=%i, odef=%p{.d.socket={.domain=%i, .type=%i, .host='%s'}}) = ?", dst, (int)type, odef, odef->d.socket.domain, odef->d.socket.type, odef->d.socket.host);
80
81 switch (odef->d.socket.domain) {
82#ifdef ROAR_HAVE_IPV4
83  case AF_INET: needed_type = ROAR_VIO_PROXY_SOCKS4; break;
84#endif
85#ifdef ROAR_HAVE_LIBDNET
86  case AF_DECnet:
87    if ( odef->d.socket.sa.dn.sdn_objnum == 0 ) {
88     needed_type = ROAR_VIO_PROXY_SOCKS4d;
89    } else {
90     needed_type = ROAR_VIO_PROXY_SOCKS4;
91    }
92   break;
93#endif
94#ifdef ROAR_HAVE_IPV6
95  case AF_INET6:
96#endif
97#ifdef ROAR_HAVE_IPX
98  case AF_IPX:
99#endif
100#ifdef ROAR_HAVE_UNIX
101  case AF_UNIX:
102#endif
103  default:
104    roar_err_set(ROAR_ERROR_AFNOTSUP);
105    return -1;
106   break;
107 }
108
109 if ( needed_type == ROAR_VIO_PROXY_SOCKS4 && type != needed_type )
110  needed_type = type;
111
112 if ( needed_type != type ) {
113  roar_err_set(ROAR_ERROR_INVAL);
114  return -1;
115 }
116
117 switch (odef->d.socket.domain) {
118#ifdef ROAR_HAVE_IPV4
119  case AF_INET:
120    if ( roar_vio_socket_init_inet4host_def(odef) == -1 )
121     return -1;
122    buf[2] = ((char*)&(odef->d.socket.sa.in.sin_port))[0];
123    buf[3] = ((char*)&(odef->d.socket.sa.in.sin_port))[1];
124    buf[4] = ((char*)&(odef->d.socket.sa.in.sin_addr.s_addr))[0];
125    buf[5] = ((char*)&(odef->d.socket.sa.in.sin_addr.s_addr))[1];
126    buf[6] = ((char*)&(odef->d.socket.sa.in.sin_addr.s_addr))[2];
127    buf[7] = ((char*)&(odef->d.socket.sa.in.sin_addr.s_addr))[3];
128    ROAR_DBG("init_socks4(dst=%p, type=%i, odef=%p{.d.socket={.domain=%i, .type=%i, .host='%s'}}): buf[]={%i, %i, %i, %i, %i, %i, %i, %i, %i}",
129             dst, (int)type, odef, odef->d.socket.domain, odef->d.socket.type, odef->d.socket.host,
130             buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6], buf[7], buf[8]);
131   break;
132#endif
133#ifdef ROAR_HAVE_LIBDNET
134  case AF_DECnet:
135    if ( type == ROAR_VIO_PROXY_SOCKS4 ) {
136     buf[2] = 0;
137     buf[3] = odef->d.socket.sa.dn.sdn_objnum;
138     buf[4] = 0;
139     buf[5] = 2;
140     buf[6] = odef->d.socket.sa.dn.sdn_nodeaddr[0];
141     buf[7] = odef->d.socket.sa.dn.sdn_nodeaddr[1];
142    } else {
143     roar_err_set(ROAR_ERROR_NOTSUP);
144     return -1;
145    }
146   break;
147#endif
148 }
149
150 if ( roar_vio_write(dst, buf, sizeof(buf)) != (ssize_t)sizeof(buf) )
151  return -1;
152
153 if ( roar_vio_read(dst, buf, 8) != (ssize_t)8 )
154  return -1;
155
156 if ( buf[1] != 0x5a ) {
157  roar_err_set(ROAR_ERROR_UNKNOWN);
158  return -1;
159 }
160
161 return 0;
162}
163
164int roar_vio_open_proxy    (struct roar_vio_calls * calls, struct roar_vio_calls * dst,
165                            enum roar_vio_proxy_type type, struct roar_vio_defaults * odef) {
166 int init_only = -1;
167 int (*init)(struct roar_vio_calls * dst, enum roar_vio_proxy_type type, struct roar_vio_defaults * odef) = NULL;
168
169 ROAR_DBG("roar_vio_open_proxy(calls=%p, dst=%p, type=%i, odef=%p{.type=%i}) = ?", calls, dst, (int)type, odef, (int)odef->type);
170
171 if ( odef->type != ROAR_VIO_DEF_TYPE_SOCKET ) {
172  roar_err_set(ROAR_ERROR_NOTSOCK);
173  return -1;
174 }
175
176 switch (type) {
177  case ROAR_VIO_PROXY_NONE: init_only = 1; init = NULL; break;
178  case ROAR_VIO_PROXY_SOCKS:
179  case ROAR_VIO_PROXY_SOCKS4:
180  case ROAR_VIO_PROXY_SOCKS4a:
181  case ROAR_VIO_PROXY_SOCKS4d:
182    init_only = 1;
183    init = init_socks4;
184   break;
185#ifndef DEBUG
186  default:
187   break;
188#endif
189 }
190
191 if ( init_only == 1 ) {
192  if ( init != NULL )
193   if ( init(dst, type, odef) == -1 )
194    return -1;
195  if ( roar_vio_open_pass(calls, dst) == -1 )
196   return -1;
197
198  calls->ctl = roar_vio_proxy_ctl;
199
200  return 0;
201 } else {
202  roar_err_set(ROAR_ERROR_NOTSUP);
203  return -1;
204 }
205}
206
207// DSTR interface:
208static enum roar_vio_proxy_type _dstrtype2proxytype(struct roar_vio_dstr_chain * chainelement) {
209 switch (chainelement->type) {
210  case ROAR_VIO_DSTR_OBJT_SOCKS:   return ROAR_VIO_PROXY_SOCKS;   break;
211  case ROAR_VIO_DSTR_OBJT_SOCKS4:  return ROAR_VIO_PROXY_SOCKS4;  break;
212  case ROAR_VIO_DSTR_OBJT_SOCKS4A: return ROAR_VIO_PROXY_SOCKS4a; break;
213  case ROAR_VIO_DSTR_OBJT_SOCKS4D: return ROAR_VIO_PROXY_SOCKS4d; break;
214  case ROAR_VIO_DSTR_OBJT_SOCKS5:  return ROAR_VIO_PROXY_SOCKS5;  break;
215  default:
216    return ROAR_VIO_PROXY_INVALID;
217   break;
218 }
219}
220
221int roar_vio_proxy_setdef(struct roar_vio_dstr_chain * cur,   struct roar_vio_dstr_chain * next) {
222 next->def = &(next->store_def);
223 return roar_vio_proxy_init_def(next->def, cur->dst, _dstrtype2proxytype(cur), cur->def);
224}
225
226int roar_vio_proxy_openvio(struct roar_vio_calls * calls, struct roar_vio_calls * dst, struct roar_vio_dstr_chain * cur, struct roar_vio_dstr_chain * next) {
227 return roar_vio_open_proxy(calls, dst, _dstrtype2proxytype(cur), cur->def);
228}
229
230//ll
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