source: roaraudio/libroar/socket.c @ 6022:db3345439191

Last change on this file since 6022:db3345439191 was 6022:db3345439191, checked in by phi, 10 years ago

cleanup

File size: 32.0 KB
Line 
1//socket.c:
2
3/*
4 *      Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008-2014
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#define _LIBROAR_NOATTR_TO_STATIC /* ignore warnings for TO_STATIC functions */
37#include "libroar.h"
38
39#if defined(ROAR_SUPPORT_PROXY) && !defined(ROAR_TARGET_WIN32) && !defined(ROAR_TARGET_MICROCONTROLLER)
40#include <pwd.h>
41#endif
42
43#define MODE_LISTEN  ROAR_SOCKET_MODE_LISTEN
44#define MODE_CONNECT ROAR_SOCKET_MODE_CONNECT
45
46static int roar_socket_open_file  (int mode, const char * host, int port);
47
48#ifdef ROAR_SUPPORT_PROXY
49static int roar_socket_open_proxy (int mode, int type, const char * host, int port, const char * proxy_type);
50
51static int roar_socket_open_socks4 (int mode, int fh, const char * host, int port, const char * user, const char * pw, const char * opts);
52static int roar_socket_open_socks4a(int mode, int fh, const char * host, int port, const char * user, const char * pw, const char * opts);
53static int roar_socket_open_socks4d(int mode, int fh, const char * host, int port, const char * user, const char * pw, const char * opts);
54static int roar_socket_open_socks4x(int mode, int fh, char host[4], int port, const char * app, size_t app_len, const char * user);
55
56static int roar_socket_open_http   (int mode, int fh, const char * host, int port, const char * user, const char * pw, const char * opts);
57
58#ifdef ROAR_HAVE_BIN_SSH
59static int roar_socket_open_ssh    (int mode, int fh, const char * host, int port, const char * user, const char * pw, const char * opts);
60#endif
61#endif
62
63
64#ifdef ROAR_TARGET_WIN32
65void roar_socket_win32_init (void) {
66 static int inited = 0;
67 WSADATA wsadata;
68
69 if ( !inited ) {
70  WSAStartup(MAKEWORD(1,1) , &wsadata);
71  inited++;
72 }
73}
74#else
75#define roar_socket_win32_init()
76#endif
77
78#ifdef ROAR_HAVE_LIBDNET
79static int roar_socket_decnet_set_timeout (int fh, time_t sec, int_least32_t usec) {
80 struct timeval timeout = {sec, usec};
81
82 return setsockopt(fh, SOL_SOCKET, SO_SNDTIMEO, &timeout, sizeof(timeout));
83}
84#endif
85
86static int roar_socket_set_tos(int fh) {
87#if defined(ROAR_HAVE_BSDSOCKETS) && !defined(ROAR_TARGET_WIN32)
88 int opt = IPTOS_LOWDELAY;
89 int ret;
90
91 roar_err_clear_errno();
92 ret = setsockopt(fh, IPPROTO_IP, IP_TOS, &opt, sizeof(int));
93 if ( ret < 0 )
94  roar_err_from_errno();
95
96 return ret;
97#else
98 roar_err_set(ROAR_ERROR_NOSYS);
99 return -1;
100#endif
101}
102
103int roar_socket_new        (int type) {
104#ifdef ROAR_HAVE_BSDSOCKETS
105 int sys_domain = -1, sys_type = -1, sys_protocol = 0;
106 int fh;
107#if defined(ROAR_HAVE_IPV4) && defined(TCP_NODELAY) && !defined(ROAR_TARGET_WIN32)
108 int t   = 1;
109#endif
110
111 switch (type) {
112  case ROAR_SOCKET_TYPE_NONE:
113  case ROAR_SOCKET_TYPE_GENSTR:
114    roar_err_set(ROAR_ERROR_INVAL);
115    return -1;
116   break;
117  case ROAR_SOCKET_TYPE_FILE:
118  case ROAR_SOCKET_TYPE_FORK:
119    roar_err_set(ROAR_ERROR_PERM);
120    return -1;
121   break;
122#ifdef ROAR_HAVE_IPV4
123  case ROAR_SOCKET_TYPE_TCP:
124    sys_domain = AF_INET; sys_type = SOCK_STREAM;
125   break;
126  case ROAR_SOCKET_TYPE_UDP:
127    sys_domain = AF_INET; sys_type = SOCK_DGRAM;
128   break;
129#endif
130#ifdef ROAR_HAVE_UNIX
131  case ROAR_SOCKET_TYPE_UNIX:
132    sys_domain = AF_UNIX; sys_type = SOCK_STREAM;
133   break;
134#endif
135#ifdef ROAR_HAVE_LIBDNET
136  case ROAR_SOCKET_TYPE_DECNET:
137    sys_domain = AF_DECnet; sys_type = SOCK_STREAM; sys_protocol = DNPROTO_NSP;
138   break;
139#endif
140#ifdef ROAR_HAVE_IPV6
141  case ROAR_SOCKET_TYPE_TCP6:
142    sys_domain = AF_INET6; sys_type = SOCK_STREAM;
143   break;
144  case ROAR_SOCKET_TYPE_UDP6:
145    sys_domain = AF_INET6; sys_type = SOCK_DGRAM;
146   break;
147#endif
148#ifdef ROAR_HAVE_IPX
149  case ROAR_SOCKET_TYPE_IPX:
150    sys_domain = AF_IPX; sys_type = SOCK_DGRAM; sys_protocol = AF_IPX;
151   break;
152#endif
153  case ROAR_SOCKET_TYPE_IPXSPX:
154  case ROAR_SOCKET_TYPE_LAT_SERVICE:
155  case ROAR_SOCKET_TYPE_LAT_REVERSE_PORT:
156  default:
157    roar_err_set(ROAR_ERROR_AFNOTSUP);
158    return -1;
159   break;
160 }
161
162 roar_socket_win32_init();
163
164 roar_err_clear_all();
165 fh = socket(sys_domain, sys_type, sys_protocol);
166 if ( fh == -1 ) {
167  roar_err_update();
168  return -1;
169 }
170
171 // do the extra work we need to do for some socket types:
172 switch (type) {
173#ifdef ROAR_HAVE_IPV4
174  case ROAR_SOCKET_TYPE_TCP:
175#if defined(TCP_NODELAY) && !defined(ROAR_TARGET_WIN32)
176   setsockopt(fh, IPPROTO_TCP, TCP_NODELAY, &t, sizeof(int));
177#endif
178  case ROAR_SOCKET_TYPE_UDP:
179#endif
180#ifdef ROAR_HAVE_IPV6
181  case ROAR_SOCKET_TYPE_TCP6:
182  case ROAR_SOCKET_TYPE_UDP6:
183#endif
184#if defined(ROAR_HAVE_IPV4) || defined(ROAR_HAVE_IPV6)
185    roar_socket_set_tos(fh);
186   break;
187#endif
188#ifdef ROAR_HAVE_LIBDNET
189  case ROAR_SOCKET_TYPE_DECNET:
190    roar_socket_decnet_set_timeout(fh, 300, 0);
191   break;
192#endif
193 }
194
195 return fh;
196#else
197 roar_err_set(ROAR_ERROR_NOSYS);
198 return -1;
199#endif
200}
201
202
203int roar_socket_nonblock(int fh, int state) {
204#if !defined(ROAR_TARGET_WIN32) && !defined(ROAR_TARGET_MICROCONTROLLER) && defined(ROAR_HAVE_FCNTL)
205 int flags;
206
207 if ( (flags = fcntl(fh, F_GETFL, 0)) == -1 ) {
208  roar_err_from_errno();
209  ROAR_ERR("roar_socket_nonblock(fh=%i, state=%i): Can not read flags: %s", fh, state, strerror(errno));
210  ROAR_DBG("roar_socket_nonblock(fh=%i, state=%i) = -1", fh, state);
211  return -1;
212 }
213
214 if ( !(flags & O_NONBLOCK) && state == ROAR_SOCKET_BLOCK )
215  return 0;
216
217 flags |= O_NONBLOCK;
218
219 if ( state == ROAR_SOCKET_BLOCK )
220  flags -= O_NONBLOCK;
221
222 if ( fcntl(fh, F_SETFL, flags) == -1 ) {
223  roar_err_from_errno();
224  ROAR_ERR("roar_socket_nonblock(fh=%i, state=%i): Can not set flags: %s", fh, state, strerror(errno));
225  ROAR_DBG("roar_socket_nonblock(fh=%i, state=%i) = -1", fh, state);
226  return -1;
227 }
228
229 ROAR_DBG("roar_socket_nonblock(fh=%i, state=%i) = 0", fh, state);
230 return 0;
231#else
232 ROAR_WARN("roar_socket_nonblock(*): no nonblocking IO support on win32, use a real OS");
233 return -1;
234#endif
235}
236
237int roar_socket_dup_udp_local_end (int fh) {
238#if !defined(ROAR_TARGET_WIN32) && !defined(ROAR_TARGET_MICROCONTROLLER) && defined(ROAR_HAVE_FCNTL)
239 int                  n              = -1;
240 int                  flags          = -1;
241 struct sockaddr_in   socket_addr;
242 socklen_t            len            = sizeof(struct sockaddr_in);
243
244 if ( (flags = fcntl(fh, F_GETFL, 0)) == -1 ) {
245  ROAR_WARN("roar_socket_dup_udp_local_end(fh=%i): Can not read flags: %s", fh, strerror(errno));
246 }
247
248 if ( getsockname(fh, (struct sockaddr *)&socket_addr, &len) == -1 ) {
249  roar_err_from_errno();
250  return -1;
251 }
252
253 if ( socket_addr.sin_family != AF_INET ) {
254  roar_err_set(ROAR_ERROR_TYPEMM);
255  return -1;
256 }
257
258 n = roar_socket_new(ROAR_SOCKET_TYPE_UDP);
259
260 if ( n == -1 )
261  return -1;
262
263//  if ( mode_func(fh, (struct sockaddr *)&socket_addr, sizeof(struct sockaddr_in)) == -1 ) {
264 if ( bind(n, (struct sockaddr *)&socket_addr, len) == -1 ) {
265  roar_err_from_errno();
266  close(n);
267  return -1;
268 }
269
270 if ( flags != -1 ) {
271  if ( fcntl(fh, F_SETFL, flags) == -1 ) {
272   ROAR_WARN("roar_socket_dup_udp_local_end(fh=%i): Can not set flags: %s", fh, strerror(errno));
273   return -1;
274  }
275 }
276
277
278 return n;
279#else
280 ROAR_WARN("roar_socket_dup_udp_local_end(*): this function is not supported on win32, use a real OS");
281 return -1;
282#endif
283}
284
285
286#define _SCMR_CONTROLLEN (sizeof(struct cmsghdr) + sizeof(int))
287int roar_socket_send_fh (int sock, int fh, char * mes, size_t len) {
288#if !defined(ROAR_TARGET_WIN32) && !defined(ROAR_TARGET_MICROCONTROLLER) && !defined(ROAR_OS_SUNOS) && !defined(ROAR_TARGET_OPENVMS)
289 struct iovec     iov[1];
290 struct msghdr    msg;
291 char             cmptr_buf[_SCMR_CONTROLLEN];
292 struct cmsghdr * cmptr = (struct cmsghdr *) cmptr_buf;
293 char             localmes[1] = {0};
294
295 ROAR_DBG("roar_socket_send_fh(sock=%i, fh=%i, mes=%p, len=%u) = ?", sock, fh, mes, len);
296
297 if ( sock < 0 || fh < 0 )
298  return -1;
299
300 if ( len == 0 ) {
301  len = 1;
302  mes = localmes;
303 }
304
305 memset(&msg,  0, sizeof(msg));
306 memset(cmptr, 0, _SCMR_CONTROLLEN);
307
308 iov[0].iov_base = mes;
309 iov[0].iov_len  = len;
310 msg.msg_iov     = iov;
311 msg.msg_iovlen  = 1;
312 msg.msg_name    = NULL;
313 msg.msg_namelen = 0;
314
315 cmptr->cmsg_level        = SOL_SOCKET;
316 cmptr->cmsg_type         = SCM_RIGHTS;
317 cmptr->cmsg_len          = _SCMR_CONTROLLEN;
318 msg.msg_control          = (caddr_t) cmptr;
319 msg.msg_controllen       = _SCMR_CONTROLLEN;
320 *(int *)CMSG_DATA(cmptr) = fh;
321
322 return sendmsg(sock, &msg, 0);
323#else
324 ROAR_ERR("roar_socket_send_fh(*): There is no UNIX Domain Socket support in win32, download a real OS.");
325 return -1;
326#endif
327}
328
329int roar_socket_recv_fh (int sock,         char * mes, size_t * len) {
330#if !defined(ROAR_TARGET_WIN32) && !defined(ROAR_TARGET_MICROCONTROLLER) && !defined(ROAR_OS_SUNOS) && !defined(ROAR_TARGET_OPENVMS)
331 struct iovec     iov[1];
332 struct msghdr    msg;
333 char             cmptr_buf[_SCMR_CONTROLLEN];
334 struct cmsghdr * cmptr = (struct cmsghdr *) cmptr_buf;
335 char             localmes[1];
336 size_t           locallen[1] = {1};
337
338 ROAR_DBG("roar_socket_recv_fh(sock=%i, mes=%p, len=%p) = ?", sock, mes, len);
339
340 if ( sock < 0 ) {
341  ROAR_DBG("roar_socket_recv_fh(sock=%i, mes=%p, len=%p) = -1 // invalid socket", sock, mes, len);
342  return -1;
343 }
344
345 if ( len == NULL ) {
346  len = locallen;
347  mes = localmes;
348 }
349
350 iov[0].iov_base = mes;
351 iov[0].iov_len  = *len;
352 msg.msg_iov     = iov;
353 msg.msg_iovlen  = 1;
354 msg.msg_name    = NULL;
355 msg.msg_namelen = 0;
356
357 msg.msg_control    = (caddr_t) cmptr;
358 msg.msg_controllen = _SCMR_CONTROLLEN;
359
360 if ( (*len = recvmsg(sock, &msg, 0)) == -1 ) {
361  ROAR_DBG("roar_socket_recv_fh(sock=%i, mes=%p, len=%p) = -1 // can not read from socket", sock, mes, len);
362  return -1;
363 }
364
365 if ( msg.msg_controllen  < _SCMR_CONTROLLEN ||
366      cmptr->cmsg_len    != _SCMR_CONTROLLEN  ) {
367  ROAR_DBG("roar_socket_recv_fh(sock=%i, mes=%p, len=%p) = -1 // control len is wrong", sock, mes, len);
368  return -1;
369 }
370
371 ROAR_DBG("roar_socket_recv_fh(sock=%i, mes=%p, len=%p) = %i", sock, mes, len, *(int *)CMSG_DATA(cmptr));
372 return *(int *)CMSG_DATA(cmptr);
373#else
374 ROAR_ERR("roar_socket_recv_fh(*): There is no UNIX Domain Socket support in win32, download a real OS.");
375 return -1;
376#endif
377}
378
379int roar_socket_listen  (int type, const char * host, int port) {
380 return roar_socket_open(MODE_LISTEN, type, host, port);
381}
382
383int roar_socket_connect (int type, const char * host, int port) {
384 const char * proxy_type = roar_env_get("ROAR_PROXY");
385
386 ROAR_DBG("roar_socket_connect(host='%s', port=%i) = ?", host, port);
387
388 if ( proxy_type == NULL || strcmp(proxy_type, "") == 0 ) {
389  return roar_socket_open(MODE_CONNECT, type, host, port);
390 } else {
391#ifdef ROAR_SUPPORT_PROXY
392  return roar_socket_open_proxy(MODE_CONNECT, type, host, port, proxy_type);
393#else
394  ROAR_ERR("roar_socket_connect(host='%s', port=%i): no support for proxy code (proxy_type=%s)", host, port, proxy_type);
395  return -1;
396#endif
397 }
398}
399
400
401#ifdef ROAR_HAVE_LIBDNET
402static int roar_socket_listen_decnet (const char * object, int num) {
403 int fh = roar_socket_new(ROAR_SOCKET_TYPE_DECNET);
404 struct sockaddr_dn bind_sockaddr;
405
406 if ( fh == -1 )
407  return -1;
408
409 if ( object != NULL && !*object )
410  object = NULL;
411
412 if ( (object != NULL && num) || (object != NULL && !*object && !num) || (object == NULL && !num) ) {
413  ROAR_WARN("roar_socket_listen_decnet(object='%s', num=%i): illegal address!", object, num);
414  close(fh);
415  roar_err_set(ROAR_ERROR_INVAL);
416  return -1;
417 }
418
419 memset((void*)&bind_sockaddr, 0, sizeof(struct sockaddr_dn));
420
421 bind_sockaddr.sdn_family    = AF_DECnet;
422 bind_sockaddr.sdn_flags     = 0;
423 bind_sockaddr.sdn_objnum    = num;
424
425 if ( num ) {
426  bind_sockaddr.sdn_objnamel = 0;
427 } else {
428  bind_sockaddr.sdn_objnamel  = ROAR_HOST2LE16(strlen(object));
429  if ( bind_sockaddr.sdn_objnamel > DN_MAXOBJL )
430   bind_sockaddr.sdn_objnamel = DN_MAXOBJL;
431  strncpy((char*)bind_sockaddr.sdn_objname, object, DN_MAXOBJL);
432 }
433
434 if ( bind(fh, (struct sockaddr *) &bind_sockaddr, sizeof(bind_sockaddr)) == -1 ) {
435  roar_err_from_errno();
436  close(fh);
437  return -1;
438 }
439
440 if ( listen(fh, 8) == -1 ) {
441  roar_err_from_errno();
442  close(fh);
443  return -1;
444 }
445
446 return fh;
447}
448#endif
449
450const char * roar_socket_get_local_nodename(void) {
451#ifdef ROAR_HAVE_LIBDNET
452 static char node[16] = {0};
453 struct dn_naddr      *binaddr;
454 struct nodeent       *dp;
455
456 if ( !node[0] ) {
457
458 // TODO: This does this function not use getnodename()?
459
460 // Those strange workarounds for the error codes are because those functions currently
461 // don't set errno. This way we will use errno as soon as it starts to set it.
462
463  roar_err_update();
464  if ( (binaddr=getnodeadd()) == NULL) {
465   roar_err_update();
466   if ( roar_error == ROAR_ERROR_NONE )
467    roar_err_set(ROAR_ERROR_NOENT);
468   return NULL;
469  }
470
471  roar_err_update();
472  if ( (dp=getnodebyaddr((char*)binaddr->a_addr, binaddr->a_len, AF_DECnet)) == NULL ) {
473   roar_err_update();
474   if ( roar_error == ROAR_ERROR_NONE )
475    roar_err_set(ROAR_ERROR_NOENT);
476   return NULL;
477  }
478
479  strncpy(node, dp->n_name, 15);
480  node[15] = 0;
481 }
482
483 return node;
484#else
485 roar_err_set(ROAR_ERROR_AFNOTSUP);
486 return NULL;
487#endif
488}
489
490int roar_socket_open (int mode, int type, const char * host, int port) {
491// int type = ROAR_SOCKET_TYPE_INET;
492 int fh;
493#ifdef ROAR_HAVE_IPX
494#define _NEED_OBJ
495#endif
496#if defined(ROAR_HAVE_IPX) || defined(ROAR_HAVE_GETADDRINFO)
497 int ret;
498#endif
499#ifdef ROAR_HAVE_IPX
500 unsigned int ipx_port;
501#endif
502#ifdef ROAR_HAVE_UNIX
503 int abstract = 0;
504#endif
505#if defined(ROAR_HAVE_IPV4) || defined(ROAR_HAVE_IPV6) || defined(ROAR_HAVE_UNIX) || defined(ROAR_HAVE_IPX)
506 union {
507  struct sockaddr     sa;
508#if defined(ROAR_HAVE_IPV4) || defined(ROAR_HAVE_IPV6)
509  struct sockaddr_in  in;
510#endif
511#ifdef ROAR_HAVE_UNIX
512  struct sockaddr_un  un;
513#endif
514#ifdef ROAR_HAVE_IPV6
515  struct sockaddr_in6 in6;
516#endif
517#ifdef ROAR_HAVE_IPX
518  struct sockaddr_ipx ipx;
519#endif
520 } socket_addr;
521 socklen_t addrlen;
522#endif
523#if (defined(ROAR_HAVE_IPV4) || defined(ROAR_HAVE_IPV6)) && !defined(ROAR_HAVE_GETADDRINFO)
524 struct hostent     * he = NULL;
525#endif
526 //unsigned int host_div = 0;
527#ifdef ROAR_TARGET_WIN32
528 int PASCAL (*mode_func)(SOCKET,const struct sockaddr*,int) = connect; // default is to connect
529#else
530 int (*mode_func)(int sockfd, const struct sockaddr *serv_addr, socklen_t addrlen) = connect; // default is to connect
531#endif
532#ifdef ROAR_HAVE_LIBDNET
533#define _NEED_OBJ
534 char * dnet_node_buf;
535#endif
536#ifdef _NEED_OBJ
537 char obj[80];
538 char * del;
539#endif
540#ifdef ROAR_HAVE_GETADDRINFO
541 int af_guessed = 0;
542 struct addrinfo hints, *res = NULL;
543 char port_as_string[32];
544#endif
545#if defined(ROAR_HAVE_IPV4) || defined(ROAR_HAVE_IPV6)
546 int is_numerical = 1;
547 const char * numptr;
548#endif
549
550 ROAR_DBG("roar_socket_open(mode=%i, type=%i, host='%s', port=%i) = ?", mode, type, host, port);
551
552 if ( host == NULL ) {
553  roar_err_set(ROAR_ERROR_FAULT);
554  return -1;
555 }
556
557 roar_err_set(ROAR_ERROR_UNKNOWN);
558
559 if ( mode == MODE_LISTEN )
560  mode_func = bind;
561
562 if ( type == ROAR_SOCKET_TYPE_UNKNOWN ) {
563#ifdef ROAR_HAVE_GETADDRINFO
564  af_guessed = 1;
565#endif
566  type = ROAR_SOCKET_TYPE_INET;
567  if ( *host == '/' ) {
568   type = ROAR_SOCKET_TYPE_UNIX;
569  } else if ( strcmp(host, "+fork") == 0 ) {
570   type = ROAR_SOCKET_TYPE_FORK;
571  } else if ( strcmp(host, "+abstract") == 0 ) {
572   type = ROAR_SOCKET_TYPE_UNIX;
573#ifdef ROAR_HAVE_UNIX
574   abstract = 1;
575#endif
576  } else if ( strstr(host, "::") != NULL ) {
577   type = ROAR_SOCKET_TYPE_DECNET;
578  } else if ( host[strlen(host)-1] == ')' ) {
579   type = ROAR_SOCKET_TYPE_IPX;
580  }
581 }
582
583
584 ROAR_DBG("roar_socket_open(mode=%i, type=%i, host='%s', port=%i) = ?", mode, type, host, port);
585
586 ROAR_DBG("roar_socket_open(*): type=%s, host='%s', port=%i",
587             type == ROAR_SOCKET_TYPE_UNIX ? "UNIX" : "???", host, port);
588
589 if ( type == ROAR_SOCKET_TYPE_DECNET ) {
590#ifdef ROAR_HAVE_LIBDNET
591   ROAR_DBG("roar_socket_open(*): nodename for DECnet: host(%p)=%s", host, host);
592   dnet_node_buf = roar_mm_strdup(host);
593   // roar_error is still set.
594   if ( dnet_node_buf == NULL )
595    return -1;
596
597   host = dnet_node_buf;
598
599   del = strstr(host, "::");
600   ROAR_DBG("roar_socket_open(*): nodename for DECnet: del(%p)=%s", del, del);
601
602   if ( del == NULL ) {
603    ROAR_WARN("roar_socket_open(*): invalid nodename for DECnet: %s", host);
604    roar_mm_free(dnet_node_buf);
605    roar_err_set(ROAR_ERROR_INVAL);
606    return -1;
607   }
608
609   *del = 0;
610
611   if ( *(del+2) == '#' ) { // assume we have node::#num
612    port = atoi(del+2);
613   }
614
615   if ( port ) {
616    snprintf(obj, 7, "%i", port); // no need for snprintf() as dec(port) is smaller than obj[]
617   } else {
618    *obj = 0;
619    strncat(obj, del+2, 79);
620   }
621
622  ROAR_DBG("roar_socket_open(*): obj='%s', port=%i", obj, port);
623
624  if ( mode == MODE_LISTEN ) {
625   fh = roar_socket_listen_decnet(obj, port);
626   roar_mm_free(dnet_node_buf);
627   return fh;
628  } else {
629   // There is nothing wrong in this case to use dnet_conn() so we do.
630   ROAR_DBG("roar_socket_open(*): CALL dnet_conn('%s', '%s', SOCK_STREAM, 0 ,0 ,0 , 0)", dnet_node_buf, obj);
631   fh = dnet_conn(dnet_node_buf, obj, SOCK_STREAM, 0, 0, 0, 0);
632   ROAR_DBG("roar_socket_open(*): RET %i", fh);
633   roar_mm_free(dnet_node_buf);
634   return fh;
635  }
636#else
637  roar_err_set(ROAR_ERROR_AFNOTSUP);
638  return -1; // no decnet support
639#endif
640 }
641
642#if defined(ROAR_HAVE_IPV4) || defined(ROAR_HAVE_IPV6)
643 memset(&socket_addr,    0, sizeof(socket_addr));
644#endif
645
646
647 if ( type == ROAR_SOCKET_TYPE_INET || type == ROAR_SOCKET_TYPE_INET6 ) {
648#if defined(ROAR_HAVE_IPV4) || defined(ROAR_HAVE_IPV6)
649
650  ROAR_DBG("roar_socket_open(*): type=INET|INET6, host='%s', port=%i", host, port);
651
652  roar_socket_win32_init(); // we need to do this early as gethostbyname() requires this.
653
654  ROAR_DBG("roar_socket_open(*): type=INET|INET6, host='%s', port=%i", host, port);
655
656  if ( !!strcmp(host, "0.0.0.0") ) {
657   for (numptr = host; is_numerical && *numptr != 0; numptr++)
658    if ( ! ((*numptr >= '0' && *numptr <= '9') || *numptr == '.')  )
659     is_numerical = 0;
660
661   if ( is_numerical && roar_libroar_iswarn(NULL) ) {
662    ROAR_WARN("roar_socket_open(*): Hostname \"%s\" is numerical. Do not use IP addresses directly. Use Hostnames.", host);
663   }
664  }
665
666#ifdef ROAR_HAVE_GETADDRINFO
667  memset(&hints, 0, sizeof(hints));
668  hints.ai_socktype = SOCK_STREAM;
669  if ( af_guessed ) {
670   hints.ai_family   = AF_UNSPEC;
671  } else {
672   hints.ai_family   = type == ROAR_SOCKET_TYPE_INET ? AF_INET : AF_INET6;
673  }
674
675  snprintf(port_as_string, sizeof(port_as_string), "%i", port);
676
677  ret = getaddrinfo(host, port_as_string, &hints, &res);
678  if ( ret == EAI_SYSTEM ) {
679   roar_err_from_errno();
680   return -1;
681  } else if ( ret != 0 ) {
682   roar_err_convert(&roar_error, ROAR_ERROR_TYPE_ROARAUDIO, ret, ROAR_ERROR_TYPE_EAI);
683   return -1;
684  }
685
686  if ( af_guessed ) {
687   type = res->ai_family == AF_INET ? ROAR_SOCKET_TYPE_INET : ROAR_SOCKET_TYPE_INET6;
688  }
689
690  if ( type == ROAR_SOCKET_TYPE_INET ) {
691   fh = roar_socket_new(ROAR_SOCKET_TYPE_TCP);
692  } else {
693   fh = roar_socket_new(ROAR_SOCKET_TYPE_TCP6);
694  }
695
696  memcpy(&(socket_addr.sa), res->ai_addr, res->ai_addrlen);
697  addrlen = res->ai_addrlen;
698
699  if ( res != NULL )
700   freeaddrinfo(res);
701#else
702  if ( (he = gethostbyname(host)) == NULL ) {
703   ROAR_ERR("roar_socket_open(*): Can\'t resolve host name '%s'",
704                     host);
705   roar_err_from_errno();
706   return -1;
707  }
708
709   ROAR_DBG("roar_socket_open(*): he=%p", he);
710
711   memcpy((struct in_addr *)&(socket_addr.in.sin_addr), he->h_addr, sizeof(struct in_addr));
712
713   /* set the connect information */
714   socket_addr.in.sin_family = AF_INET;
715   socket_addr.in.sin_port   = ROAR_HOST2NET16(port);
716
717  fh = roar_socket_new(ROAR_SOCKET_TYPE_TCP);
718  addrlen = sizeof(struct sockaddr_in);
719#endif
720
721  ROAR_DBG("roar_socket_open(*): fh=%i", fh);
722
723  if ( fh == -1 ) {
724   ROAR_ERR("roar_socket_open(*): Can\'t create TCP socket: %s", strerror(errno));
725   return -1;
726  }
727
728  ROAR_DBG("roar_socket_open(*) = ?");
729
730  ROAR_DBG("roar_socket_open(*): fh=%i", fh);
731
732   if ( mode_func(fh, (struct sockaddr *)&socket_addr.sa, addrlen) == -1 ) {
733    ROAR_DBG("roar_socket_open(*): Can not connect/bind: %s", strerror(errno));
734    roar_err_from_errno();
735    close(fh);
736    return -1;
737   }
738
739  ROAR_DBG("roar_socket_open(*): fh=%i", fh);
740
741  // hey! we have a socket...
742  ROAR_DBG("roar_socket_open(*) = ? // we have a socket :)");
743#else
744  ROAR_DBG("roar_socket_open(*) = -1 // no IPv4 or IPv6 support");
745  roar_err_set(ROAR_ERROR_AFNOTSUP);
746  return -1;
747#endif
748 } else if ( type == ROAR_SOCKET_TYPE_UNIX ) {
749#ifdef ROAR_HAVE_UNIX
750  socket_addr.un.sun_family = AF_UNIX;
751
752  if ( abstract ) {
753   memset(socket_addr.un.sun_path, 0, sizeof(socket_addr.un.sun_path));
754   snprintf(socket_addr.un.sun_path+1, sizeof(socket_addr.un.sun_path)-1, "RoarAudio/UNIX/Abstract/%i", abstract);
755  } else {
756   strncpy(socket_addr.un.sun_path, host, sizeof(socket_addr.un.sun_path) - 1);
757  }
758
759  fh = roar_socket_new(ROAR_SOCKET_TYPE_UNIX);
760
761  if ( mode_func(fh, (struct sockaddr *)&socket_addr.un, sizeof(struct sockaddr_un)) == -1 ) {
762   ROAR_DBG("roar_socket_open(*): Can not connect/bind: %s", strerror(errno));
763   roar_err_from_errno();
764   close(fh);
765   return -1;
766  }
767#else
768  ROAR_ERR("roar_socket_open(*): There is no UNIX Domain Socket support in win32, download a real OS.");
769  roar_err_set(ROAR_ERROR_AFNOTSUP);
770  return -1;
771#endif
772 } else if ( type == ROAR_SOCKET_TYPE_IPX ) {
773#ifdef ROAR_HAVE_IPX
774  socket_addr.ipx.sipx_family = AF_IPX;
775
776  obj[0] = 0;
777
778  if ( (ret = sscanf(host, "%8x.%12s(%x)", &socket_addr.ipx.sipx_network, obj, &ipx_port)) < 2 ) {
779   return -1;
780   socket_addr.ipx.sipx_port = ipx_port;
781  } else if ( ret == 2 ) {
782   socket_addr.ipx.sipx_port = port; // Network Byte Order?
783  }
784
785  memset(socket_addr.ipx.sipx_node, 0, IPX_NODE_LEN);
786  ret = strlen(obj);
787
788  if ( ret % 2 )  // needs to be even at the moment
789   return -1;
790
791  fh = roar_socket_new(ROAR_SOCKET_TYPE_IPX);
792
793  close(fh);
794  roar_err_set(ROAR_ERROR_AFNOTSUP);
795  return -1;
796#else
797  roar_err_set(ROAR_ERROR_AFNOTSUP);
798  return -1;
799#endif
800 } else if ( type == ROAR_SOCKET_TYPE_FORK ) {
801  roar_err_set(ROAR_ERROR_INVAL);
802  return -1;
803 } else if ( type == ROAR_SOCKET_TYPE_FILE ) {
804  return roar_socket_open_file(mode, host, port);
805 } else {
806  roar_err_set(ROAR_ERROR_AFNOTSUP);
807  return -1;
808 }
809
810 if ( mode == MODE_LISTEN ) {
811#if defined(ROAR_HAVE_BSDSOCKETS) || defined(ROAR_TARGET_WIN32)
812  if ( listen(fh, ROAR_SOCKET_QUEUE_LEN) == -1 ) {
813   roar_err_from_errno();
814   close(fh);
815   return -1;
816  }
817#else
818  roar_err_set(ROAR_ERROR_NOSYS);
819  return -1;
820#endif
821 }
822
823 return fh;
824}
825
826static int roar_socket_open_file  (int mode, const char * host, int port) {
827#ifdef ROAR_HAVE_IO_POSIX
828 int fh;
829
830 if ( mode == MODE_LISTEN )
831  return -1;
832
833 if ( (fh = open(host, O_RDONLY, 0644)) == -1 ) {
834  ROAR_ERR("roar_socket_open_file(*): Can not open file %s: %s", host, strerror(errno));
835 }
836
837 return fh;
838#else
839 return -1;
840#endif
841}
842
843// --- [ PROXY CODE ] ---
844
845#ifndef ROAR_HAVE_IO_POSIX
846#ifdef  ROAR_SUPPORT_PROXY
847#undef  ROAR_SUPPORT_PROXY
848#endif
849#endif
850
851// generic proxy code:
852
853#ifdef ROAR_SUPPORT_PROXY
854static int roar_socket_open_proxy (int mode, int type, const char * host, int port, const char * proxy_type) {
855 int    proxy_port = -1;
856 char   proxy_host[ROAR_SOCKET_MAX_HOSTNAMELEN];
857 const char * proxy_addr = NULL;
858 int    i;
859 int    fh = -1;
860 const char * user = NULL, * pw = NULL, * opts = NULL;
861 char * sep;
862 int    no_fh = 0;
863 char   proxy_addr_buf[1024];
864 static struct passwd * passwd;
865 int (* code)(int mode, int fh, const char * host, int port, const char * user, const char * pw, const char * opts) = NULL;
866
867 if ( passwd == NULL ) {
868  passwd = getpwuid(getuid());
869 }
870
871// TODO: fix this in a good way
872#ifndef ROAR_TARGET_MICROCONTROLLER
873 if ( passwd != NULL )
874  user = passwd->pw_name;
875#endif
876
877 if ( user == NULL )
878  user = roar_env_get("USER");
879
880 // TODO: change this so we support listen() proxys (ssh -R)
881 if ( mode != MODE_CONNECT )
882  return -1;
883
884 if ( !strncmp(proxy_type, "socks", 5) ) {
885  proxy_addr = roar_env_get("socks_proxy");
886
887  proxy_port = 9050; // TOR's default port
888 } else if ( !strcmp(proxy_type, "http") || !strcmp(proxy_type, "https") ) {
889  proxy_port = 8080;
890
891  if ( (proxy_addr = roar_env_get("http_proxy")) == NULL )
892   proxy_addr = roar_env_get("https_proxy");
893
894  if ( proxy_addr == NULL )
895   return -1;
896
897  if ( !strncmp(proxy_addr, "http://", 7) )
898   proxy_addr += 7;
899 } else if ( !strncmp(proxy_type, "ssh", 3) ) {
900  proxy_port = 22;
901  proxy_addr = roar_env_get("ssh_proxy");
902  no_fh      = 1;
903 }
904
905 proxy_addr_buf[1023] = 0;
906 strncpy(proxy_addr_buf, proxy_addr, 1023);
907 proxy_addr = proxy_addr_buf;
908
909 if ( (sep = strstr(proxy_type, "/")) != NULL )
910  opts = sep+1;
911
912 if ( proxy_addr == NULL )
913  return -1;
914
915 if ( (sep = strstr(proxy_addr, "@")) != NULL ) {
916  *sep = 0;
917  user = proxy_addr;
918  proxy_addr = sep+1;
919
920  if ( (sep = strstr(user, ":")) != NULL ) {
921   *sep = 0;
922   pw = sep+1;
923  }
924 }
925
926 ROAR_DBG("roar_socket_open_proxy(*): proxy_type='%s', opts='%s', user='%s', pw=(not shown), proxy_addr='%s'", proxy_type, opts, user, proxy_addr);
927
928 for (i = 0; proxy_addr[i] != 0 && proxy_addr[i] != ':' && i < (ROAR_SOCKET_MAX_HOSTNAMELEN - 1); i++)
929  proxy_host[i] = proxy_addr[i];
930 proxy_host[i] = 0;
931
932 if ( i == 0 ) // no hostname found
933  return -1;
934
935 if ( proxy_addr[i] == ':' )
936  proxy_port = atoi(&proxy_addr[i+1]);
937
938 if ( ! no_fh ) {
939  if ( (fh = roar_socket_open(mode, type, proxy_host, proxy_port)) == -1) {
940   return -1;
941  }
942 }
943
944 if ( !strcmp(proxy_type, "socks4a") ) { // for TOR, the only supported type at the moment
945  code = roar_socket_open_socks4a;
946 } else if ( !strcmp(proxy_type, "socks4d") ) { // DECnet
947  code = roar_socket_open_socks4d;
948 } else if ( !strcmp(proxy_type, "socks4") ) { // good old SOCKS4
949  code = roar_socket_open_socks4;
950 } else if ( !strcmp(proxy_type, "http") ) { // HTTP CONNECT
951  code = roar_socket_open_http;
952 } else if ( !strncmp(proxy_type, "ssh", 3) ) { // SSH...
953#ifdef ROAR_HAVE_BIN_SSH
954  code = roar_socket_open_ssh;
955#else
956  ROAR_ERR("roar_socket_open_proxy(*): No SSH support compiled in");
957#endif
958 } else {
959  return -1; // unknown type
960 }
961
962 if ( code != NULL ) {
963  if ( no_fh ) {
964   fh = code(mode, fh, host, port, user, pw, opts);
965  } else {
966   if ( code(mode, fh, host, port, user, pw, opts) == -1 ) {
967    close(fh);
968    return -1;
969   }
970  }
971
972  return fh;
973 }
974
975 close(fh);
976 return -1;
977}
978
979// protocoll dependet proxy code:
980
981static int roar_socket_open_socks4 (int mode, int fh, const char * host, int port, const char * user, const char * pw, const char * opts) {
982#ifndef ROAR_TARGET_MICROCONTROLLER
983 struct hostent     * he;
984
985 if ( (he = gethostbyname(host)) == NULL ) {
986  ROAR_ERR("roar_socket_open_socks4(*): Can\'t resolve host name '%s'", host);
987  return -1;
988 }
989
990 return roar_socket_open_socks4x(mode, fh, he->h_addr, port, NULL, 0, user);
991#else
992 return -1;
993#endif
994}
995
996static int roar_socket_open_socks4a(int mode, int fh, const char * host, int port, const char * user, const char * pw, const char * opts) {
997 return roar_socket_open_socks4x(mode, fh, "\0\0\0\1", port, host, strlen(host)+1, user);
998}
999
1000static int roar_socket_open_socks4d(int mode, int fh, const char * host, int port, const char * user, const char * pw, const char * opts) {
1001 size_t len = strlen(host)+1;
1002 char * dp;
1003
1004 if ( port == 0 ) {
1005  if ( (dp = strstr(host, "::")) == NULL )
1006   return -1;
1007
1008  len--;
1009  *dp = 0;
1010  memmove(dp+1, dp+2, len - (dp-host) - 1);
1011 }
1012
1013 return roar_socket_open_socks4x(mode, fh, "\0\2\0\0", port, host, len, user);
1014}
1015
1016static int roar_socket_open_socks4x(int mode, int fh, char host[4], int port, const char * app, size_t app_len, const char * user) {
1017 char buf[9];
1018 int len;
1019
1020 buf[0] = 0x04;
1021 buf[1] = mode == MODE_CONNECT ? 0x01 : 0x02;
1022 *((uint16_t*)&buf[2]) = htons(port);
1023 memcpy(buf+4, host, 4);
1024
1025 if ( user == NULL ) {
1026  buf[8] = 0x00;
1027  len = 9;
1028 } else {
1029  len = 8;
1030 }
1031
1032 if ( write(fh, buf, len) != len )
1033  return -1;
1034
1035 if ( user != NULL ) {
1036  len = strlen(user) + 1;
1037  if ( write(fh, user, len) != len )
1038   return -1;
1039 }
1040
1041 if ( app_len > 0 )
1042  if ( write(fh, app, app_len) != (ssize_t)app_len )
1043   return -1;
1044
1045 if ( read(fh, buf, 8) != 8 )
1046  return -1;
1047
1048 if ( buf[1] != 0x5a )
1049  return -1;
1050
1051 return 0;
1052}
1053
1054static int roar_socket_open_http   (int mode, int fh, const char * host, int port, const char * user, const char * pw, const char * opts) {
1055 char buf[1024];
1056 int len;
1057
1058 if ( port == 0 || host == NULL )
1059  return -1;
1060
1061 if ( *host == '/' ) // AF_UNIX
1062  return -1;
1063
1064 if ( (len = snprintf(buf, sizeof(buf), "CONNECT %s:%i HTTP/1.0\r\nUser-Agent: libroar\r\n\r\n", host, port)) == -1 )
1065  return -1;
1066
1067 if ( write(fh, buf, len) != len )
1068  return -1;
1069
1070 while ( (len = read(fh, buf, sizeof(buf))) ) {
1071  if ( len == sizeof(buf) ) { // overlong lion
1072   return -1;
1073  } else if ( len == 2 && buf[0] == '\r' && buf[1] == '\n' ) {
1074   break;
1075  } else if ( len == 1 && (buf[0] == '\r' || buf[0] == '\n') ) { // bad proxy or devel trying to debug ;)
1076   break;
1077  } else if ( len >= 4 && buf[len-4] == '\r' && buf[len-3] == '\n' && buf[len-2] == '\r' && buf[len-1] == '\n' ) {
1078   break;
1079  }
1080 }
1081
1082 return 0;
1083}
1084
1085
1086#ifdef ROAR_HAVE_BIN_SSH
1087static int roar_socket_open_ssh    (int mode, int fh, const char * host, int port, const char * user, const char * pw, const char * opts) {
1088 const char * proxy_addr = roar_env_get("ssh_proxy");
1089 char * sep;
1090 char * bin_ssh;
1091 char   cmd[1024] = "", rcmd[1024] = "";
1092 int    proxy_port = 22;
1093 int    use_socat = 0;
1094 int r;
1095 int socks[2];
1096
1097 if ( host == NULL )
1098  return -1;
1099
1100 if ( *host == '/' )
1101  use_socat = 1;
1102
1103 if ( mode == MODE_LISTEN )
1104  return -1;
1105
1106 if ( proxy_addr == NULL )
1107  return -1;
1108
1109 if ( opts != NULL ) {
1110  if ( !strcmp(opts, "socat") ) {
1111   use_socat = 1;
1112  } else if ( !strcmp(opts, "netcat") ) {
1113   use_socat = 0;
1114  } else {
1115   return -1;
1116  }
1117 }
1118
1119 ROAR_DBG("roar_socket_open_ssh(*): proxy_addr='%s'", proxy_addr);
1120
1121 if ( (sep = strstr(proxy_addr, "@")) != NULL )
1122  proxy_addr = sep+1;
1123
1124 if ( (sep = strstr(proxy_addr, ":")) != NULL ) {
1125  *sep = 0;
1126  proxy_port = atoi(sep+1);
1127 }
1128
1129
1130 if ( !strcmp(host, "+fork") ) {
1131  strncpy(rcmd, "roard --no-listen --client-fh 0", 32);
1132 } else {
1133  if ( use_socat ) {
1134   if ( *host == '/' ) {
1135    snprintf(rcmd, sizeof(rcmd)-1, "socat stdio unix-connect:\"%s\"", host);
1136   } else {
1137    snprintf(rcmd, sizeof(rcmd)-1, "socat stdio tcp:\"%s\":%i", host, port);
1138   }
1139  } else {
1140   snprintf(rcmd, sizeof(rcmd)-1, "$(which netcat nc 2> /dev/null | grep -v \" \" | head -n 1) \"%s\" %i", host, port);
1141  }
1142
1143  rcmd[sizeof(rcmd)-1] = 0;
1144 }
1145
1146 ROAR_DBG("roar_socket_open_ssh(*): proxy_port=%i, user='%s', proxy_addr='%s'", proxy_port, user, proxy_addr);
1147 ROAR_DBG("roar_socket_open_ssh(*): rcmd: %s", rcmd);
1148 bin_ssh = roar_libroar_get_path("bin-ssh", 0, NULL, NULL);
1149 if ( bin_ssh == NULL )
1150  return -1;
1151
1152 snprintf(cmd, sizeof(cmd)-1, "%s -p %i -l '%s' '%s' '%s'", bin_ssh, proxy_port, user, proxy_addr, rcmd);
1153 cmd[sizeof(cmd)-1] = 0;
1154
1155 roar_mm_free(bin_ssh);
1156
1157
1158// TODO: get this more portable!
1159#ifdef AF_UNIX
1160 if ( socketpair(AF_UNIX, SOCK_STREAM, 0, socks) == -1 ) {
1161  return -1;
1162 }
1163#else
1164 return -1;
1165#endif
1166
1167 r = roar_fork(NULL);
1168
1169 if ( r == -1 ) { // error!
1170  ROAR_ERR("roar_socket_open_ssh(*): Can not fork: %s", strerror(errno));
1171  close(socks[0]);
1172  close(socks[1]);
1173  return -1;
1174 } else if ( r == 0 ) { // we are the child
1175  roar_watchdog_stop();
1176
1177  close(socks[0]);
1178
1179  close(ROAR_STDIN ); // we do not want roard to have any standard input
1180  close(ROAR_STDOUT); // STDOUT is also not needed, so we close it,
1181                      // but STDERR we keep open for error messages.
1182
1183  dup2(socks[1], 0);
1184  dup2(socks[1], 1);
1185
1186  execlp("sh", "sh", "-c", cmd, (_LIBROAR_GOOD_CAST char*)NULL);
1187
1188  // we are still alive?
1189  ROAR_ERR("roar_socket_open_ssh(*): alive after exec(), that's bad!");
1190  ROAR_U_EXIT(1);
1191 } else { // we are the parent
1192  close(socks[1]);
1193  return socks[0];
1194 }
1195 return -1;
1196}
1197#endif
1198
1199#endif // ROAR_SUPPORT_PROXY
1200
1201//ll
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