1 | //basic.c: |
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2 | |
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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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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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40 | int i = 0; |
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41 | int port = 0; |
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42 | int fh = -1; |
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43 | int is_decnet = 0; |
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44 | char * obj = NULL; |
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45 | #if !defined(ROAR_TARGET_WIN32) && !defined(ROAR_TARGET_MICROCONTROLLER) |
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46 | struct passwd * pwd; |
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47 | #endif |
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48 | #ifdef ROAR_HAVE_LIBDNET |
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49 | struct stat decnet_stat; |
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50 | #endif |
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51 | |
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52 | roar_errno = ROAR_ERROR_UNKNOWN; |
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53 | |
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54 | if ( server == NULL && (roar_server = getenv("ROAR_SERVER")) != NULL ) |
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55 | server = roar_server; |
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56 | |
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57 | #if !defined(ROAR_TARGET_WIN32) && !defined(ROAR_TARGET_MICROCONTROLLER) |
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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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62 | #endif |
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63 | |
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64 | if ( server == NULL || *server == 0 ) { |
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65 | /* connect via defaults */ |
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66 | |
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67 | #ifdef ROAR_HAVE_UNIX |
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68 | #ifndef ROAR_TARGET_MICROCONTROLLER |
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69 | roar_server = getenv("HOME"); |
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70 | #else |
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71 | roar_server = NULL; |
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72 | #endif |
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73 | |
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74 | if ( roar_server == NULL ) { |
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75 | #if !defined(ROAR_TARGET_WIN32) && !defined(ROAR_TARGET_MICROCONTROLLER) |
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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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81 | #else |
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82 | roar_server = "/WIN32-SUCKS"; |
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83 | #endif |
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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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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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91 | if ( (fh = roar_socket_connect(ROAR_DEFAULT_SOCK_GLOBAL, 0)) != -1 ) |
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92 | return fh; |
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93 | #endif |
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94 | |
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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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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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102 | return roar_socket_connect(user_sock, ROAR_DEFAULT_NUM); |
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103 | } |
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104 | } |
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105 | #endif |
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106 | |
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107 | } else { |
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108 | /* connect via (char*)server */ |
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109 | // find a port: |
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110 | if ( *server != '/' ) { // don't test AF_UNIX sockets for ports |
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111 | for (i = 0; server[i] != 0; i++) { |
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112 | if ( server[i] == ':' ) { |
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113 | if ( server[i+1] == ':' ) { // DECnet, leave unchanged |
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114 | is_decnet = 1; |
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115 | obj = &server[i+2]; |
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116 | break; |
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117 | } |
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118 | |
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119 | port = atoi(server+i+1); |
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120 | server[i] = 0; |
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121 | break; |
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122 | } |
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123 | } |
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124 | } |
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125 | |
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126 | if ( is_decnet ) { |
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127 | *user_sock = 0; |
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128 | if ( *server == ':' ) { |
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129 | if ( roar_socket_get_local_nodename() ) |
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130 | strncat(user_sock, roar_socket_get_local_nodename(), 6); |
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131 | } |
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132 | |
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133 | strncat(user_sock, server, 79); |
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134 | server = user_sock; |
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135 | if ( *obj == 0 ) { |
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136 | #ifdef DN_MAXOBJL |
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137 | strncat(user_sock, ROAR_DEFAULT_OBJECT, DN_MAXOBJL+2); |
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138 | #else |
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139 | ROAR_ERR("roar_connect_raw(*): size of DECnet object unknown."); |
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140 | #endif |
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141 | } |
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142 | } |
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143 | |
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144 | if ( port || is_decnet ) { |
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145 | fh = roar_socket_connect(server, port); |
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146 | // restore the original string |
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147 | server[i] = ':'; |
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148 | } else { |
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149 | fh = roar_socket_connect(server, ROAR_DEFAULT_PORT); |
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150 | } |
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151 | } |
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152 | |
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153 | if ( fh == -1 ) |
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154 | roar_errno = ROAR_ERROR_CONNREFUSED; |
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155 | |
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156 | ROAR_DBG("roar_connect_raw(*) = %i", fh); |
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157 | |
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158 | return fh; |
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159 | } |
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160 | |
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161 | int roar_connect (struct roar_connection * con, char * server) { |
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162 | int fh; |
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163 | |
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164 | if ( con == NULL ) { |
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165 | roar_errno = ROAR_ERROR_INVAL; |
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166 | return -1; |
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167 | } |
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168 | |
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169 | roar_errno = ROAR_ERROR_UNKNOWN; |
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170 | fh = roar_connect_raw(server); |
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171 | |
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172 | if ( fh == -1 ) |
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173 | return -1; |
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174 | |
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175 | return roar_connect_fh(con, fh); |
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176 | } |
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177 | |
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178 | int roar_connect_fh (struct roar_connection * con, int fh) { |
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179 | |
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180 | if ( con == NULL || fh == -1 ) { |
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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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185 | // specal hack to set an ilegal value used internaly in libroar: |
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186 | if ( fh == -2 ) |
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187 | fh = -1; |
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188 | |
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189 | memset(con, 0, sizeof(struct roar_connection)); |
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190 | |
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191 | con->__fh = fh; |
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192 | |
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193 | roar_errno = ROAR_ERROR_NONE; |
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194 | return 0; |
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195 | } |
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196 | |
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197 | int roar_get_connection_fh (struct roar_connection * con) { |
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198 | return con->__fh; |
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199 | } |
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200 | |
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201 | int roar_disconnect (struct roar_connection * con) { |
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202 | struct roar_message m; |
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203 | |
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204 | m.datalen = 0; |
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205 | m.stream = 0; |
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206 | m.pos = 0; |
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207 | m.cmd = ROAR_CMD_QUIT; |
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208 | |
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209 | roar_req(con, &m, NULL); |
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210 | |
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211 | #ifdef ROAR_HAVE_IO_POSIX |
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212 | close(roar_get_connection_fh(con)); |
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213 | #endif |
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214 | |
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215 | roar_connect_fh(con, -2); |
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216 | |
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217 | roar_errno = ROAR_ERROR_NONE; |
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218 | |
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219 | return 0; |
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220 | } |
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221 | |
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222 | int roar_identify (struct roar_connection * con, char * name) { |
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223 | struct roar_message mes; |
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224 | pid_t pid; |
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225 | int max_len; |
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226 | |
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227 | roar_errno = ROAR_ERROR_UNKNOWN; |
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228 | |
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229 | ROAR_DBG("roar_identify(*): try to identify myself..."); |
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230 | |
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231 | mes.cmd = ROAR_CMD_IDENTIFY; |
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232 | mes.stream = 0; |
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233 | mes.pos = 0; |
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234 | |
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235 | ROAR_DBG("roar_identify(*): name=%p", name); |
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236 | |
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237 | if ( name == NULL ) |
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238 | name = "libroar client"; |
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239 | |
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240 | ROAR_DBG("roar_identify(*): name=%p", name); |
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241 | |
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242 | max_len = strlen(name); |
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243 | ROAR_DBG("roar_identify(*): strlen(name) = %i", max_len); |
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244 | |
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245 | if ( max_len > (LIBROAR_BUFFER_MSGDATA - 5) ) |
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246 | max_len = LIBROAR_BUFFER_MSGDATA - 5; |
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247 | |
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248 | mes.datalen = 5 + max_len; |
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249 | mes.data[0] = 1; |
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250 | |
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251 | pid = getpid(); |
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252 | *(uint32_t*)(mes.data+1) = ROAR_HOST2NET32(pid); |
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253 | ROAR_DBG("roar_identify(*): pid = %i", pid); |
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254 | |
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255 | strncpy(mes.data+5, name, max_len); |
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256 | |
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257 | return roar_req(con, &mes, NULL); |
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258 | } |
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259 | |
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260 | #define _ROAR_MESS_BUF_LEN (1 /* version */ + 1 /* cmd */ + 2 /* stream */ + 4 /* pos */ + 2 /* datalen */) |
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261 | int roar_send_message (struct roar_connection * con, struct roar_message * mes, char * data) { |
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262 | struct roar_vio_calls vio; |
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263 | |
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264 | if ( roar_vio_open_fh_socket(&vio, roar_get_connection_fh(con)) == -1 ) |
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265 | return -1; |
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266 | |
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267 | return roar_vsend_message(&vio, mes, data); |
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268 | } |
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269 | |
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270 | int roar_vsend_message(struct roar_vio_calls * vio, struct roar_message * mes, char * data) { |
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271 | char buf[_ROAR_MESS_BUF_LEN]; |
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272 | |
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273 | roar_errno = ROAR_ERROR_UNKNOWN; |
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274 | |
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275 | ROAR_DBG("roar_send_message(*): try to send an request..."); |
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276 | |
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277 | buf[0] = _ROAR_MESSAGE_VERSION; |
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278 | buf[1] = (unsigned char) mes->cmd; |
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279 | *(uint16_t*)(buf+2) = ROAR_HOST2NET16(mes->stream); |
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280 | *(uint32_t*)(buf+4) = ROAR_HOST2NET32(mes->pos); |
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281 | *(uint16_t*)(buf+8) = ROAR_HOST2NET16(mes->datalen); |
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282 | |
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283 | if ( roar_vio_write(vio, buf, _ROAR_MESS_BUF_LEN) != _ROAR_MESS_BUF_LEN ) { |
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284 | roar_errno = ROAR_ERROR_PIPE; |
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285 | return -1; |
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286 | } |
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287 | |
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288 | if ( mes->datalen != 0 ) { |
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289 | if ( roar_vio_write(vio, data == NULL ? mes->data : data, mes->datalen) != mes->datalen ) { |
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290 | roar_errno = ROAR_ERROR_PIPE; |
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291 | return -1; |
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292 | } |
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293 | } |
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294 | |
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295 | roar_vio_sync(vio); // we need to do this becasue of ssl/compressed links |
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296 | |
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297 | roar_errno = ROAR_ERROR_NONE; |
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298 | |
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299 | ROAR_DBG("roar_send_message(*) = 0"); |
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300 | return 0; |
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301 | } |
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302 | |
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303 | int roar_recv_message (struct roar_connection * con, struct roar_message * mes, char ** data) { |
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304 | struct roar_vio_calls vio; |
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305 | |
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306 | if ( roar_vio_open_fh_socket(&vio, roar_get_connection_fh(con)) == -1 ) |
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307 | return -1; |
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308 | |
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309 | return roar_vrecv_message(&vio, mes, data); |
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310 | } |
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311 | |
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312 | int roar_vrecv_message(struct roar_vio_calls * vio, struct roar_message * mes, char ** data) { |
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313 | char buf[_ROAR_MESS_BUF_LEN]; |
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314 | |
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315 | roar_errno = ROAR_ERROR_UNKNOWN; |
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316 | |
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317 | ROAR_DBG("roar_recv_message(*): try to get a response form the server..."); |
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318 | |
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319 | if ( data ) |
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320 | *data = NULL; |
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321 | |
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322 | if ( roar_vio_read(vio, buf, _ROAR_MESS_BUF_LEN) != _ROAR_MESS_BUF_LEN ) { |
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323 | roar_errno = ROAR_ERROR_PROTO; |
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324 | return -1; |
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325 | } |
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326 | |
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327 | ROAR_DBG("roar_recv_message(*): Got a header"); |
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328 | |
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329 | if ( buf[0] != _ROAR_MESSAGE_VERSION ) { |
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330 | roar_errno = ROAR_ERROR_PROTO; |
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331 | return -1; |
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332 | } |
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333 | |
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334 | mes->cmd = (unsigned char)buf[1]; |
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335 | mes->stream = ROAR_NET2HOST16(*(uint16_t*)(buf+2)); |
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336 | mes->pos = ROAR_NET2HOST32(*(uint32_t*)(buf+4)); |
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337 | mes->datalen = ROAR_NET2HOST16(*(uint16_t*)(buf+8)); |
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338 | |
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339 | ROAR_DBG("roar_recv_message(*): command=%i(%s)", mes->cmd, |
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340 | mes->cmd == ROAR_CMD_OK ? "OK" : (mes->cmd == ROAR_CMD_ERROR ? "ERROR" : "UNKNOWN")); |
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341 | |
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342 | if ( mes->datalen == 0 ) { |
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343 | ROAR_DBG("roar_recv_message(*): no data in this pkg"); |
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344 | ROAR_DBG("roar_recv_message(*) = 0"); |
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345 | roar_errno = ROAR_ERROR_NONE; |
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346 | return 0; |
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347 | } |
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348 | |
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349 | if ( mes->datalen <= LIBROAR_BUFFER_MSGDATA ) { |
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350 | if ( roar_vio_read(vio, mes->data, mes->datalen) == mes->datalen ) { |
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351 | ROAR_DBG("roar_recv_message(*): Got data!"); |
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352 | ROAR_DBG("roar_recv_message(*) = 0"); |
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353 | roar_errno = ROAR_ERROR_NONE; |
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354 | return 0; |
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355 | } |
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356 | |
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357 | roar_errno = ROAR_ERROR_PIPE; |
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358 | return -1; |
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359 | } else { |
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360 | if ( data == NULL ) { |
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361 | roar_errno = ROAR_ERROR_MSGSIZE; |
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362 | return -1; |
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363 | } |
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364 | |
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365 | if ( (*data = malloc(mes->datalen)) == NULL ) { |
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366 | roar_errno = ROAR_ERROR_NOMEM; |
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367 | return -1; |
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368 | } |
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369 | |
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370 | if ( mes->datalen == 0 ) { |
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371 | roar_errno = ROAR_ERROR_NONE; |
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372 | return 0; |
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373 | } |
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374 | |
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375 | if ( roar_vio_read(vio, *data, mes->datalen) == mes->datalen ) { |
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376 | ROAR_DBG("roar_recv_message(*): Got data!"); |
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377 | ROAR_DBG("roar_recv_message(*) = 0"); |
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378 | roar_errno = ROAR_ERROR_NONE; |
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379 | return 0; |
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380 | } |
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381 | |
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382 | roar_errno = ROAR_ERROR_PIPE; |
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383 | return -1; |
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384 | } |
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385 | |
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386 | // what happened here? |
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387 | return -1; |
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388 | } |
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389 | |
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390 | int roar_req (struct roar_connection * con, struct roar_message * mes, char ** data) { |
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391 | struct roar_vio_calls vio; |
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392 | |
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393 | if ( roar_vio_open_fh_socket(&vio, roar_get_connection_fh(con)) == -1 ) |
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394 | return -1; |
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395 | |
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396 | return roar_vreq(&vio, mes, data); |
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397 | } |
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398 | |
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399 | int roar_vreq (struct roar_vio_calls * vio, struct roar_message * mes, char ** data) { |
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400 | if ( roar_vsend_message(vio, mes, data ? *data : NULL) != 0 ) |
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401 | return -1; |
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402 | |
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403 | if ( data ) |
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404 | free(*data); |
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405 | |
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406 | return roar_vrecv_message(vio, mes, data); |
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407 | } |
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408 | |
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409 | int roar_debug_message_print (struct roar_message * mes) { |
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410 | if ( mes == NULL ) |
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411 | return -1; |
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412 | |
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413 | ROAR_DBG("roar_debug_message_print(*): Command: %i", mes->cmd); |
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414 | ROAR_DBG("roar_debug_message_print(*): Stream : %u", mes->stream); |
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415 | ROAR_DBG("roar_debug_message_print(*): Pos : %u", mes->pos); |
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416 | ROAR_DBG("roar_debug_message_print(*): Datalen: %i", mes->datalen); |
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417 | |
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418 | ROAR_DBG("roar_debug_message_print(*) = 0"); |
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419 | return 0; |
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420 | } |
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421 | |
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422 | int roar_debug_audio_info_print (struct roar_audio_info * info) { |
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423 | if ( info == NULL ) |
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424 | return -1; |
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425 | |
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426 | ROAR_DBG("roar_debug_audio_info_print(*): Rate : %i", info->rate); |
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427 | ROAR_DBG("roar_debug_audio_info_print(*): Channels: %i", info->channels); |
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428 | ROAR_DBG("roar_debug_audio_info_print(*): Bits : %i", info->bits); |
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429 | ROAR_DBG("roar_debug_audio_info_print(*): Codec : %i", info->codec); |
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430 | |
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431 | ROAR_DBG("roar_debug_audio_info_print(*) = 0"); |
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432 | return 0; |
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433 | } |
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434 | |
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435 | //ll |
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