[0] | 1 | //basic.c: |
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| 2 | |
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[690] | 3 | /* |
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| 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008 |
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| 5 | * |
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| 6 | * This file is part of libroar a part of RoarAudio, |
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| 7 | * a cross-platform sound system for both, home and professional use. |
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| 8 | * See README for details. |
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| 9 | * |
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| 10 | * This file is free software; you can redistribute it and/or modify |
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| 11 | * it under the terms of the GNU General Public License version 3 |
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| 12 | * as published by the Free Software Foundation. |
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| 13 | * |
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| 14 | * libroar is distributed in the hope that it will be useful, |
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| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 17 | * GNU General Public License for more details. |
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| 18 | * |
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| 19 | * You should have received a copy of the GNU General Public License |
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| 20 | * along with this software; see the file COPYING. If not, write to |
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| 21 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
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| 22 | * |
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| 23 | * NOTE for everyone want's to change something and send patches: |
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| 24 | * read README and HACKING! There a addition information on |
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| 25 | * the license of this document you need to read before you send |
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| 26 | * any patches. |
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| 27 | * |
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| 28 | * NOTE for uses of non-GPL (LGPL,...) software using libesd, libartsc |
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| 29 | * or libpulse*: |
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| 30 | * The libs libroaresd, libroararts and libroarpulse link this lib |
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| 31 | * and are therefore GPL. Because of this it may be illigal to use |
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| 32 | * them with any software that uses libesd, libartsc or libpulse*. |
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| 33 | */ |
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| 34 | |
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[0] | 35 | #include "libroar.h" |
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| 36 | |
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| 37 | int roar_connect_raw (char * server) { |
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| 38 | char user_sock[80]; |
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| 39 | char * roar_server; |
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[701] | 40 | int i = 0; |
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[0] | 41 | int port = 0; |
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| 42 | int fh = -1; |
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[501] | 43 | int is_decnet = 0; |
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[516] | 44 | char * obj = NULL; |
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[1475] | 45 | #if !defined(ROAR_TARGET_WIN32) && !defined(ROAR_TARGET_MICROCONTROLLER) |
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[1026] | 46 | struct passwd * pwd; |
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[1393] | 47 | #endif |
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[828] | 48 | #ifdef ROAR_HAVE_LIBDNET |
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| 49 | struct stat decnet_stat; |
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| 50 | #endif |
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[0] | 51 | |
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[807] | 52 | roar_errno = ROAR_ERROR_UNKNOWN; |
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| 53 | |
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[61] | 54 | if ( server == NULL && (roar_server = getenv("ROAR_SERVER")) != NULL ) |
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[0] | 55 | server = roar_server; |
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| 56 | |
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[1436] | 57 | #if !defined(ROAR_TARGET_WIN32) && !defined(ROAR_TARGET_MICROCONTROLLER) |
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[448] | 58 | if ( server == NULL && (i = readlink("/etc/roarserver", user_sock, 79)) != -1 ) { |
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| 59 | user_sock[i] = 0; |
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| 60 | server = user_sock; |
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| 61 | } |
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[1093] | 62 | #endif |
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[448] | 63 | |
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[61] | 64 | if ( server == NULL || *server == 0 ) { |
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[0] | 65 | /* connect via defaults */ |
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| 66 | |
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[1764] | 67 | #ifdef ROAR_HAVE_UNIX |
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[1436] | 68 | #ifndef ROAR_TARGET_MICROCONTROLLER |
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[1026] | 69 | roar_server = getenv("HOME"); |
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[1435] | 70 | #else |
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| 71 | roar_server = NULL; |
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| 72 | #endif |
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[1026] | 73 | |
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| 74 | if ( roar_server == NULL ) { |
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[1436] | 75 | #if !defined(ROAR_TARGET_WIN32) && !defined(ROAR_TARGET_MICROCONTROLLER) |
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[1026] | 76 | if ( (pwd = getpwuid(getuid())) == NULL ) { |
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| 77 | roar_server = "/NX-HOME-DIR"; |
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| 78 | } else { |
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| 79 | roar_server = pwd->pw_dir; |
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| 80 | } |
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[1078] | 81 | #else |
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| 82 | roar_server = "/WIN32-SUCKS"; |
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| 83 | #endif |
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[1026] | 84 | } |
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| 85 | |
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| 86 | snprintf(user_sock, 79, "%s/%s", roar_server, ROAR_DEFAULT_SOCK_USER); |
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[0] | 87 | |
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| 88 | if ( (fh = roar_socket_connect(user_sock, 0)) != -1 ) |
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| 89 | return fh; |
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| 90 | |
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[237] | 91 | if ( (fh = roar_socket_connect(ROAR_DEFAULT_SOCK_GLOBAL, 0)) != -1 ) |
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| 92 | return fh; |
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[1764] | 93 | #endif |
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[237] | 94 | |
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[0] | 95 | if ( (fh = roar_socket_connect(ROAR_DEFAULT_HOST, ROAR_DEFAULT_PORT)) != -1 ) |
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| 96 | return fh; |
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| 97 | |
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[828] | 98 | #ifdef ROAR_HAVE_LIBDNET |
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| 99 | if ( stat(ROAR_PROC_NET_DECNET, &decnet_stat) == 0 ) { |
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| 100 | if ( roar_socket_get_local_nodename() ) { |
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| 101 | snprintf(user_sock, 79, "%s::%s", roar_socket_get_local_nodename(), ROAR_DEFAULT_OBJECT); |
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[2010] | 102 | if ( (fh = roar_socket_connect(user_sock, ROAR_DEFAULT_NUM)) != -1 ) |
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| 103 | return fh; |
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[828] | 104 | } |
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[522] | 105 | } |
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[828] | 106 | #endif |
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[2007] | 107 | |
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| 108 | #ifdef ROAR_HAVE_LIBSLP |
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[2014] | 109 | if ( (server = roar_slp_find_roard(0)) != NULL ) |
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| 110 | if ( (fh = roar_connect_raw(server)) != -1 ) |
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| 111 | return fh; |
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| 112 | |
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| 113 | /* in case we can not connect to the server given this may be a cache problem, |
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| 114 | we do a new lookup with the cache disabled in this case */ |
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| 115 | ROAR_WARN("roar_connect_raw(*): Can not connect to SLP located server, disabling cache"); |
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| 116 | if ( (server = roar_slp_find_roard(1)) != NULL ) |
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| 117 | if ( (fh = roar_connect_raw(server)) != -1 ) |
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| 118 | return fh; |
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[2007] | 119 | #endif |
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[522] | 120 | |
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[2014] | 121 | return -1; |
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| 122 | |
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[0] | 123 | } else { |
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| 124 | /* connect via (char*)server */ |
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[501] | 125 | // find a port: |
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| 126 | if ( *server != '/' ) { // don't test AF_UNIX sockets for ports |
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| 127 | for (i = 0; server[i] != 0; i++) { |
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| 128 | if ( server[i] == ':' ) { |
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| 129 | if ( server[i+1] == ':' ) { // DECnet, leave unchanged |
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| 130 | is_decnet = 1; |
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[516] | 131 | obj = &server[i+2]; |
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[501] | 132 | break; |
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| 133 | } |
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| 134 | |
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| 135 | port = atoi(server+i+1); |
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| 136 | server[i] = 0; |
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| 137 | break; |
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| 138 | } |
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[0] | 139 | } |
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| 140 | } |
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| 141 | |
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[521] | 142 | if ( is_decnet ) { |
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| 143 | *user_sock = 0; |
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| 144 | if ( *server == ':' ) { |
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| 145 | if ( roar_socket_get_local_nodename() ) |
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[1066] | 146 | strncat(user_sock, roar_socket_get_local_nodename(), 6); |
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[521] | 147 | } |
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| 148 | |
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[1066] | 149 | strncat(user_sock, server, 79); |
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[516] | 150 | server = user_sock; |
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[521] | 151 | if ( *obj == 0 ) { |
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[1066] | 152 | #ifdef DN_MAXOBJL |
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| 153 | strncat(user_sock, ROAR_DEFAULT_OBJECT, DN_MAXOBJL+2); |
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| 154 | #else |
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| 155 | ROAR_ERR("roar_connect_raw(*): size of DECnet object unknown."); |
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| 156 | #endif |
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[521] | 157 | } |
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[516] | 158 | } |
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| 159 | |
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[501] | 160 | if ( port || is_decnet ) { |
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[0] | 161 | fh = roar_socket_connect(server, port); |
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| 162 | // restore the original string |
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| 163 | server[i] = ':'; |
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| 164 | } else { |
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| 165 | fh = roar_socket_connect(server, ROAR_DEFAULT_PORT); |
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| 166 | } |
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| 167 | } |
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| 168 | |
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[807] | 169 | if ( fh == -1 ) |
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| 170 | roar_errno = ROAR_ERROR_CONNREFUSED; |
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| 171 | |
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[0] | 172 | ROAR_DBG("roar_connect_raw(*) = %i", fh); |
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| 173 | |
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| 174 | return fh; |
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| 175 | } |
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| 176 | |
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| 177 | int roar_connect (struct roar_connection * con, char * server) { |
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[1315] | 178 | int fh; |
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| 179 | |
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| 180 | if ( con == NULL ) { |
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| 181 | roar_errno = ROAR_ERROR_INVAL; |
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| 182 | return -1; |
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| 183 | } |
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| 184 | |
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[807] | 185 | roar_errno = ROAR_ERROR_UNKNOWN; |
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[1315] | 186 | fh = roar_connect_raw(server); |
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[0] | 187 | |
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[1315] | 188 | if ( fh == -1 ) |
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[0] | 189 | return -1; |
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| 190 | |
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[1315] | 191 | return roar_connect_fh(con, fh); |
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| 192 | } |
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| 193 | |
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| 194 | int roar_connect_fh (struct roar_connection * con, int fh) { |
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| 195 | |
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| 196 | if ( con == NULL || fh == -1 ) { |
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| 197 | roar_errno = ROAR_ERROR_INVAL; |
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| 198 | return -1; |
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| 199 | } |
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| 200 | |
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| 201 | // specal hack to set an ilegal value used internaly in libroar: |
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| 202 | if ( fh == -2 ) |
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| 203 | fh = -1; |
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| 204 | |
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| 205 | memset(con, 0, sizeof(struct roar_connection)); |
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| 206 | |
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[1660] | 207 | con->__fh = fh; |
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[1315] | 208 | |
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[807] | 209 | roar_errno = ROAR_ERROR_NONE; |
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[0] | 210 | return 0; |
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| 211 | } |
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| 212 | |
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[1660] | 213 | int roar_get_connection_fh (struct roar_connection * con) { |
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| 214 | return con->__fh; |
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| 215 | } |
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| 216 | |
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[0] | 217 | int roar_disconnect (struct roar_connection * con) { |
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| 218 | struct roar_message m; |
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| 219 | |
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| 220 | m.datalen = 0; |
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| 221 | m.stream = 0; |
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[133] | 222 | m.pos = 0; |
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[0] | 223 | m.cmd = ROAR_CMD_QUIT; |
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| 224 | |
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| 225 | roar_req(con, &m, NULL); |
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| 226 | |
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[1475] | 227 | #ifdef ROAR_HAVE_IO_POSIX |
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[1660] | 228 | close(roar_get_connection_fh(con)); |
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[1475] | 229 | #endif |
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[0] | 230 | |
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[1660] | 231 | roar_connect_fh(con, -2); |
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[0] | 232 | |
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[807] | 233 | roar_errno = ROAR_ERROR_NONE; |
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| 234 | |
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[0] | 235 | return 0; |
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| 236 | } |
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| 237 | |
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| 238 | int roar_identify (struct roar_connection * con, char * name) { |
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| 239 | struct roar_message mes; |
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| 240 | pid_t pid; |
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| 241 | int max_len; |
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| 242 | |
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[807] | 243 | roar_errno = ROAR_ERROR_UNKNOWN; |
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| 244 | |
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[0] | 245 | ROAR_DBG("roar_identify(*): try to identify myself..."); |
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| 246 | |
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| 247 | mes.cmd = ROAR_CMD_IDENTIFY; |
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| 248 | mes.stream = 0; |
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| 249 | mes.pos = 0; |
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| 250 | |
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| 251 | ROAR_DBG("roar_identify(*): name=%p", name); |
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| 252 | |
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| 253 | if ( name == NULL ) |
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| 254 | name = "libroar client"; |
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| 255 | |
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| 256 | ROAR_DBG("roar_identify(*): name=%p", name); |
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| 257 | |
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| 258 | max_len = strlen(name); |
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| 259 | ROAR_DBG("roar_identify(*): strlen(name) = %i", max_len); |
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| 260 | |
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| 261 | if ( max_len > (LIBROAR_BUFFER_MSGDATA - 5) ) |
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| 262 | max_len = LIBROAR_BUFFER_MSGDATA - 5; |
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| 263 | |
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| 264 | mes.datalen = 5 + max_len; |
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| 265 | mes.data[0] = 1; |
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| 266 | |
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| 267 | pid = getpid(); |
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| 268 | *(uint32_t*)(mes.data+1) = ROAR_HOST2NET32(pid); |
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| 269 | ROAR_DBG("roar_identify(*): pid = %i", pid); |
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| 270 | |
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| 271 | strncpy(mes.data+5, name, max_len); |
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| 272 | |
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| 273 | return roar_req(con, &mes, NULL); |
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| 274 | } |
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| 275 | |
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[8] | 276 | #define _ROAR_MESS_BUF_LEN (1 /* version */ + 1 /* cmd */ + 2 /* stream */ + 4 /* pos */ + 2 /* datalen */) |
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[0] | 277 | int roar_send_message (struct roar_connection * con, struct roar_message * mes, char * data) { |
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[1319] | 278 | struct roar_vio_calls vio; |
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| 279 | |
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[1660] | 280 | if ( roar_vio_open_fh_socket(&vio, roar_get_connection_fh(con)) == -1 ) |
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[1319] | 281 | return -1; |
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| 282 | |
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| 283 | return roar_vsend_message(&vio, mes, data); |
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| 284 | } |
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| 285 | |
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| 286 | int roar_vsend_message(struct roar_vio_calls * vio, struct roar_message * mes, char * data) { |
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[0] | 287 | char buf[_ROAR_MESS_BUF_LEN]; |
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| 288 | |
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[807] | 289 | roar_errno = ROAR_ERROR_UNKNOWN; |
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| 290 | |
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[0] | 291 | ROAR_DBG("roar_send_message(*): try to send an request..."); |
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| 292 | |
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[8] | 293 | buf[0] = _ROAR_MESSAGE_VERSION; |
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| 294 | buf[1] = (unsigned char) mes->cmd; |
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| 295 | *(uint16_t*)(buf+2) = ROAR_HOST2NET16(mes->stream); |
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| 296 | *(uint32_t*)(buf+4) = ROAR_HOST2NET32(mes->pos); |
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| 297 | *(uint16_t*)(buf+8) = ROAR_HOST2NET16(mes->datalen); |
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[0] | 298 | |
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[1319] | 299 | if ( roar_vio_write(vio, buf, _ROAR_MESS_BUF_LEN) != _ROAR_MESS_BUF_LEN ) { |
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[807] | 300 | roar_errno = ROAR_ERROR_PIPE; |
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[0] | 301 | return -1; |
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[807] | 302 | } |
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[0] | 303 | |
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[807] | 304 | if ( mes->datalen != 0 ) { |
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[1319] | 305 | if ( roar_vio_write(vio, data == NULL ? mes->data : data, mes->datalen) != mes->datalen ) { |
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[807] | 306 | roar_errno = ROAR_ERROR_PIPE; |
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[0] | 307 | return -1; |
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[807] | 308 | } |
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| 309 | } |
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| 310 | |
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[1334] | 311 | roar_vio_sync(vio); // we need to do this becasue of ssl/compressed links |
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| 312 | |
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[807] | 313 | roar_errno = ROAR_ERROR_NONE; |
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[0] | 314 | |
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| 315 | ROAR_DBG("roar_send_message(*) = 0"); |
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| 316 | return 0; |
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| 317 | } |
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| 318 | |
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| 319 | int roar_recv_message (struct roar_connection * con, struct roar_message * mes, char ** data) { |
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[1319] | 320 | struct roar_vio_calls vio; |
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| 321 | |
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[1660] | 322 | if ( roar_vio_open_fh_socket(&vio, roar_get_connection_fh(con)) == -1 ) |
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[1319] | 323 | return -1; |
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| 324 | |
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| 325 | return roar_vrecv_message(&vio, mes, data); |
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| 326 | } |
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| 327 | |
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| 328 | int roar_vrecv_message(struct roar_vio_calls * vio, struct roar_message * mes, char ** data) { |
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[0] | 329 | char buf[_ROAR_MESS_BUF_LEN]; |
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| 330 | |
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[807] | 331 | roar_errno = ROAR_ERROR_UNKNOWN; |
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| 332 | |
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[0] | 333 | ROAR_DBG("roar_recv_message(*): try to get a response form the server..."); |
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| 334 | |
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| 335 | if ( data ) |
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| 336 | *data = NULL; |
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| 337 | |
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[1319] | 338 | if ( roar_vio_read(vio, buf, _ROAR_MESS_BUF_LEN) != _ROAR_MESS_BUF_LEN ) { |
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[807] | 339 | roar_errno = ROAR_ERROR_PROTO; |
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[0] | 340 | return -1; |
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[807] | 341 | } |
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[0] | 342 | |
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| 343 | ROAR_DBG("roar_recv_message(*): Got a header"); |
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| 344 | |
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[807] | 345 | if ( buf[0] != _ROAR_MESSAGE_VERSION ) { |
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| 346 | roar_errno = ROAR_ERROR_PROTO; |
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[8] | 347 | return -1; |
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[807] | 348 | } |
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[8] | 349 | |
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| 350 | mes->cmd = (unsigned char)buf[1]; |
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| 351 | mes->stream = ROAR_NET2HOST16(*(uint16_t*)(buf+2)); |
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| 352 | mes->pos = ROAR_NET2HOST32(*(uint32_t*)(buf+4)); |
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| 353 | mes->datalen = ROAR_NET2HOST16(*(uint16_t*)(buf+8)); |
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[0] | 354 | |
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| 355 | ROAR_DBG("roar_recv_message(*): command=%i(%s)", mes->cmd, |
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| 356 | mes->cmd == ROAR_CMD_OK ? "OK" : (mes->cmd == ROAR_CMD_ERROR ? "ERROR" : "UNKNOWN")); |
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| 357 | |
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[104] | 358 | if ( mes->datalen == 0 ) { |
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| 359 | ROAR_DBG("roar_recv_message(*): no data in this pkg"); |
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| 360 | ROAR_DBG("roar_recv_message(*) = 0"); |
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[807] | 361 | roar_errno = ROAR_ERROR_NONE; |
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[104] | 362 | return 0; |
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| 363 | } |
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| 364 | |
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[0] | 365 | if ( mes->datalen <= LIBROAR_BUFFER_MSGDATA ) { |
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[1319] | 366 | if ( roar_vio_read(vio, mes->data, mes->datalen) == mes->datalen ) { |
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[0] | 367 | ROAR_DBG("roar_recv_message(*): Got data!"); |
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| 368 | ROAR_DBG("roar_recv_message(*) = 0"); |
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[807] | 369 | roar_errno = ROAR_ERROR_NONE; |
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[0] | 370 | return 0; |
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| 371 | } |
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[807] | 372 | |
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| 373 | roar_errno = ROAR_ERROR_PIPE; |
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[0] | 374 | return -1; |
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| 375 | } else { |
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[807] | 376 | if ( data == NULL ) { |
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| 377 | roar_errno = ROAR_ERROR_MSGSIZE; |
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[0] | 378 | return -1; |
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[807] | 379 | } |
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[0] | 380 | |
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[807] | 381 | if ( (*data = malloc(mes->datalen)) == NULL ) { |
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| 382 | roar_errno = ROAR_ERROR_NOMEM; |
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[0] | 383 | return -1; |
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[807] | 384 | } |
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[0] | 385 | |
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[807] | 386 | if ( mes->datalen == 0 ) { |
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| 387 | roar_errno = ROAR_ERROR_NONE; |
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[0] | 388 | return 0; |
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[807] | 389 | } |
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[0] | 390 | |
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[1319] | 391 | if ( roar_vio_read(vio, *data, mes->datalen) == mes->datalen ) { |
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[0] | 392 | ROAR_DBG("roar_recv_message(*): Got data!"); |
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| 393 | ROAR_DBG("roar_recv_message(*) = 0"); |
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[807] | 394 | roar_errno = ROAR_ERROR_NONE; |
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[0] | 395 | return 0; |
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| 396 | } |
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[807] | 397 | |
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| 398 | roar_errno = ROAR_ERROR_PIPE; |
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[0] | 399 | return -1; |
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| 400 | } |
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| 401 | |
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[807] | 402 | // what happened here? |
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[0] | 403 | return -1; |
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| 404 | } |
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| 405 | |
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| 406 | int roar_req (struct roar_connection * con, struct roar_message * mes, char ** data) { |
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[1319] | 407 | struct roar_vio_calls vio; |
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| 408 | |
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[1660] | 409 | if ( roar_vio_open_fh_socket(&vio, roar_get_connection_fh(con)) == -1 ) |
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[1319] | 410 | return -1; |
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| 411 | |
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| 412 | return roar_vreq(&vio, mes, data); |
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| 413 | } |
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| 414 | |
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| 415 | int roar_vreq (struct roar_vio_calls * vio, struct roar_message * mes, char ** data) { |
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| 416 | if ( roar_vsend_message(vio, mes, data ? *data : NULL) != 0 ) |
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[0] | 417 | return -1; |
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| 418 | |
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| 419 | if ( data ) |
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| 420 | free(*data); |
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| 421 | |
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[1319] | 422 | return roar_vrecv_message(vio, mes, data); |
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[0] | 423 | } |
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| 424 | |
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| 425 | int roar_debug_message_print (struct roar_message * mes) { |
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| 426 | if ( mes == NULL ) |
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| 427 | return -1; |
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| 428 | |
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| 429 | ROAR_DBG("roar_debug_message_print(*): Command: %i", mes->cmd); |
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| 430 | ROAR_DBG("roar_debug_message_print(*): Stream : %u", mes->stream); |
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| 431 | ROAR_DBG("roar_debug_message_print(*): Pos : %u", mes->pos); |
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| 432 | ROAR_DBG("roar_debug_message_print(*): Datalen: %i", mes->datalen); |
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| 433 | |
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| 434 | ROAR_DBG("roar_debug_message_print(*) = 0"); |
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| 435 | return 0; |
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| 436 | } |
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| 437 | |
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| 438 | int roar_debug_audio_info_print (struct roar_audio_info * info) { |
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| 439 | if ( info == NULL ) |
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| 440 | return -1; |
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| 441 | |
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| 442 | ROAR_DBG("roar_debug_audio_info_print(*): Rate : %i", info->rate); |
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| 443 | ROAR_DBG("roar_debug_audio_info_print(*): Channels: %i", info->channels); |
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| 444 | ROAR_DBG("roar_debug_audio_info_print(*): Bits : %i", info->bits); |
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| 445 | ROAR_DBG("roar_debug_audio_info_print(*): Codec : %i", info->codec); |
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| 446 | |
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| 447 | ROAR_DBG("roar_debug_audio_info_print(*) = 0"); |
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| 448 | return 0; |
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| 449 | } |
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| 450 | |
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| 451 | //ll |
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