1 | //vio_socket.c: |
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2 | |
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3 | /* |
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4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2009 |
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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 | #ifdef ROAR_HAVE_BSDSOCKETS |
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38 | #define _CAN_OPERATE |
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39 | #endif |
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40 | |
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41 | int roar_vio_open_def_socket (struct roar_vio_calls * calls, struct roar_vio_defaults * def) { |
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42 | #ifdef _CAN_OPERATE |
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43 | int fh = -1; |
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44 | socklen_t len = 0; |
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45 | |
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46 | if ( calls == NULL || def == NULL ) |
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47 | return -1; |
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48 | |
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49 | if ( def->type != ROAR_VIO_DEF_TYPE_SOCKET ) |
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50 | return -1; |
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51 | |
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52 | switch (def->d.socket.domain) { |
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53 | #ifdef ROAR_HAVE_IPV4 |
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54 | case AF_INET: |
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55 | len = sizeof(struct sockaddr_in); |
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56 | |
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57 | if ( roar_vio_socket_init_inet4host_def(def) == -1 ) |
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58 | return -1; |
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59 | |
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60 | switch (def->d.socket.type) { |
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61 | case SOCK_STREAM: |
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62 | fh = roar_socket_new_tcp(); |
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63 | break; |
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64 | case SOCK_DGRAM: |
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65 | fh = roar_socket_new_udp(); |
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66 | break; |
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67 | default: |
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68 | return -1; |
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69 | } |
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70 | break; |
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71 | #endif |
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72 | #ifdef ROAR_HAVE_UNIX |
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73 | case AF_UNIX: |
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74 | len = sizeof(struct sockaddr_un); |
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75 | |
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76 | switch (def->d.socket.type) { |
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77 | case SOCK_STREAM: |
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78 | fh = roar_socket_new_unix(); |
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79 | break; |
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80 | case SOCK_DGRAM: |
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81 | return -1; |
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82 | break; |
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83 | default: |
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84 | return -1; |
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85 | } |
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86 | break; |
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87 | #endif |
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88 | #ifdef ROAR_HAVE_LIBDNET |
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89 | case AF_DECnet: |
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90 | len = sizeof(struct sockaddr_dn); |
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91 | |
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92 | if ( roar_vio_socket_init_decnetnode_def(def) == -1 ) |
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93 | return -1; |
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94 | |
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95 | switch (def->d.socket.type) { |
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96 | case SOCK_STREAM: |
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97 | fh = roar_socket_new_decnet_stream(); |
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98 | break; |
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99 | default: |
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100 | return -1; |
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101 | } |
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102 | break; |
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103 | #endif |
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104 | #ifdef ROAR_HAVE_IPV6 |
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105 | case AF_INET6: |
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106 | len = sizeof(struct sockaddr_in6); |
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107 | |
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108 | switch (def->d.socket.type) { |
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109 | case SOCK_STREAM: |
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110 | fh = roar_socket_new_tcp6(); |
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111 | break; |
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112 | case SOCK_DGRAM: |
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113 | fh = roar_socket_new_udp6(); |
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114 | break; |
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115 | default: |
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116 | return -1; |
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117 | } |
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118 | break; |
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119 | #endif |
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120 | #ifdef ROAR_HAVE_IPX |
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121 | case AF_IPX: |
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122 | len = sizeof(struct sockaddr_ipx); |
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123 | |
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124 | return -1; |
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125 | break; |
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126 | #endif |
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127 | default: |
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128 | return -1; |
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129 | } |
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130 | |
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131 | if ( fh == -1 ) |
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132 | return -1; |
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133 | |
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134 | if ( connect(fh, &(def->d.socket.sa.sa), len) == -1 ) { |
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135 | close(fh); |
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136 | return -1; |
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137 | } |
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138 | |
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139 | if ( roar_vio_open_fh_socket(calls, fh) == -1 ) { |
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140 | close(fh); |
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141 | return -1; |
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142 | } |
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143 | |
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144 | // there is no problem if the shutdown()s fail. |
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145 | // some socket domains don't support unidirectional connections |
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146 | // this just free()s some kernel buffers :) |
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147 | switch (def->o_flags & (O_RDONLY|O_WRONLY|O_RDWR)) { |
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148 | case O_RDONLY: |
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149 | ROAR_SHUTDOWN(fh, SHUT_WR); |
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150 | break; |
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151 | case O_WRONLY: |
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152 | ROAR_SHUTDOWN(fh, SHUT_RD); |
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153 | break; |
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154 | } |
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155 | |
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156 | return 0; |
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157 | #else |
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158 | return -1; |
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159 | #endif |
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160 | } |
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161 | |
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162 | int roar_vio_socket_init_socket_def (struct roar_vio_defaults * def, int domain, int type) { |
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163 | #ifdef _CAN_OPERATE |
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164 | if ( def == NULL || domain == -1 || type == -1 ) |
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165 | return -1; |
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166 | |
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167 | // we do not memset(def, 0, sizeof(...)) here |
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168 | // because this is allready done in roar_vio_dstr_init_defaults() |
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169 | // if we would be would override o_flags/o_mode and maybe others |
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170 | |
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171 | memset(&(def->d.socket.sa), 0, sizeof(def->d.socket.sa)); |
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172 | |
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173 | def->type = ROAR_VIO_DEF_TYPE_SOCKET; |
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174 | def->d.socket.domain = domain; |
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175 | def->d.socket.type = type; |
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176 | def->d.socket.sa.sa.sa_family = domain; |
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177 | |
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178 | return 0; |
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179 | #else |
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180 | return -1; |
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181 | #endif |
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182 | } |
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183 | |
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184 | int roar_vio_socket_init_dstr_def (struct roar_vio_defaults * def, char * dstr, int hint, int type, |
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185 | struct roar_vio_defaults * odef) { |
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186 | #ifdef _CAN_OPERATE |
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187 | char * host; |
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188 | #if defined(ROAR_HAVE_IPV4) || defined(ROAR_HAVE_IPV6) |
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189 | int port; |
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190 | #endif |
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191 | #if defined(ROAR_HAVE_IPV4) |
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192 | int ret; |
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193 | #endif |
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194 | |
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195 | if ( def == NULL ) |
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196 | return -1; |
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197 | |
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198 | if ( dstr == NULL && odef == NULL ) |
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199 | return -1; |
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200 | |
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201 | if ( dstr == NULL ) |
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202 | dstr = ""; |
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203 | |
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204 | ROAR_DBG("roar_vio_socket_init_dstr_def(def=%p, dstr='%s', hint=%i, type=%i, odef=%p) = ?", def, dstr, hint, type, odef); |
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205 | |
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206 | if ( hint == -1 ) { |
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207 | if ( 0 ) { // this is needed to keep the syntx ok, compiler will throw it away |
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208 | #ifdef ROAR_HAVE_IPV6 |
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209 | } else if ( strstr(dstr, "[") != NULL ) { // [ip]:service |
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210 | hint = AF_INET6; |
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211 | #endif |
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212 | #ifdef ROAR_HAVE_LIBDNET |
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213 | } else if ( strstr(dstr, "::") != NULL ) { // node::object |
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214 | hint = AF_DECnet; |
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215 | #endif |
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216 | #ifdef ROAR_HAVE_IPX |
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217 | } else if ( strstr(dstr, "(") != NULL ) { // net:mac(service) |
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218 | hint = AF_IPX; |
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219 | #endif |
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220 | #ifdef ROAR_HAVE_UNIX |
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221 | } else if ( strstr(dstr, "/") != NULL ) { // /path/to/sock |
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222 | hint = AF_UNIX; |
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223 | #endif |
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224 | #ifdef ROAR_HAVE_IPV4 |
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225 | } else if ( strstr(dstr, ":") != NULL ) { // host:port |
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226 | hint = AF_INET; |
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227 | #endif |
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228 | } |
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229 | } |
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230 | |
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231 | if ( hint == -1 && odef != NULL ) { // if we still don't know what this is we try |
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232 | // to use the parent objects request |
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233 | ROAR_DBG("roar_vio_socket_init_dstr_def(*): hint=-1 && odef!=NULL"); |
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234 | if ( odef->type == ROAR_VIO_DEF_TYPE_SOCKET ) { |
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235 | ROAR_DBG("roar_vio_socket_init_dstr_def(*): hint=-1 && odef!=NULL, using hint from odef"); |
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236 | hint = odef->d.socket.domain; |
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237 | } |
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238 | } |
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239 | |
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240 | if ( hint == -1 ) /* we really have no glue what this is... */ |
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241 | return -1; |
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242 | |
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243 | #ifdef ROAR_HAVE_UNIX |
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244 | if ( hint == AF_UNIX ) { |
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245 | if ( *dstr != 0 && strcmp(dstr, "//") != 0 ) { |
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246 | return roar_vio_socket_init_unix_def(def, dstr); |
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247 | } else { |
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248 | if ( roar_vio_socket_conv_def(odef, AF_UNIX) == -1 ) |
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249 | return -1; |
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250 | |
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251 | return roar_vio_socket_init_unix_def(def, odef->d.socket.sa.un.sun_path); |
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252 | } |
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253 | } |
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254 | #endif |
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255 | |
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256 | ROAR_DBG("roar_vio_socket_init_dstr_def(*) = ?"); |
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257 | |
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258 | if ( *dstr == 0 ) { |
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259 | if ( roar_vio_socket_conv_def(odef, hint) == -1 ) |
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260 | return -1; |
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261 | |
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262 | if ( odef->d.socket.type != type ) |
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263 | return -1; |
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264 | |
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265 | if ( def != odef ) |
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266 | memcpy(def, odef, sizeof(struct roar_vio_defaults)); |
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267 | |
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268 | return 0; |
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269 | } |
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270 | |
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271 | for (; *dstr == '/'; dstr++); |
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272 | |
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273 | ROAR_DBG("roar_vio_socket_init_dstr_def(*) = ?"); |
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274 | |
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275 | switch (hint) { |
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276 | #ifdef ROAR_HAVE_IPV4 |
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277 | case AF_INET: |
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278 | host = dstr; |
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279 | for (; *dstr != 0 && *dstr != ':'; dstr++); |
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280 | |
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281 | if ( *dstr == ':' ) { // we have a port :) |
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282 | *dstr++ = 0; |
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283 | if ( (port = roar_vio_socket_get_port(dstr, AF_INET, type)) == -1 ) |
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284 | return -1; |
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285 | |
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286 | ret = roar_vio_socket_init_inet4_def(def, host, port, type); |
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287 | |
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288 | *(dstr-1) = ':'; |
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289 | |
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290 | return ret; |
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291 | } else { |
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292 | if ( roar_vio_socket_conv_def(odef, AF_INET) == -1 ) |
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293 | return -1; |
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294 | |
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295 | return roar_vio_socket_init_inet4_def(def, host, ROAR_NET2HOST16(odef->d.socket.sa.in.sin_port), type); |
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296 | } |
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297 | break; |
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298 | #endif |
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299 | #ifdef ROAR_HAVE_LIBDNET |
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300 | case AF_DECnet: |
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301 | ROAR_DBG("roar_vio_socket_init_dstr_def(*) = ?"); |
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302 | host = dstr; |
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303 | |
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304 | if ( type != SOCK_STREAM ) |
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305 | return -1; |
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306 | |
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307 | if ( (dstr = strstr(dstr, "::")) == NULL ) { |
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308 | if ( roar_vio_socket_conv_def(odef, AF_DECnet) == -1 ) |
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309 | return -1; |
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310 | |
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311 | return -1; |
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312 | // return roar_vio_socket_init_decnet_def(def, host, -1, dstr); |
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313 | } else { |
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314 | *dstr = 0; |
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315 | dstr += 2; |
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316 | return roar_vio_socket_init_decnet_def(def, host, -1, dstr); |
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317 | } |
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318 | break; |
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319 | #endif |
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320 | #ifdef ROAR_HAVE_IPV6 |
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321 | case AF_INET6: |
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322 | return -1; |
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323 | break; |
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324 | #endif |
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325 | #ifdef ROAR_HAVE_IPX |
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326 | case AF_IPX: |
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327 | return -1; |
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328 | break; |
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329 | #endif |
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330 | default: |
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331 | return -1; |
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332 | } |
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333 | |
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334 | return 0; |
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335 | #else |
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336 | return -1; |
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337 | #endif |
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338 | } |
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339 | |
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340 | #ifdef _CAN_OPERATE |
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341 | int roar_vio_socket_conv_def (struct roar_vio_defaults * def, int domain) { |
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342 | if ( def == NULL || domain == -1 ) |
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343 | return -1; |
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344 | |
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345 | #ifdef ROAR_HAVE_UNIX |
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346 | if ( domain == AF_UNIX ) { |
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347 | if ( def->type == ROAR_VIO_DEF_TYPE_SOCKET ) { |
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348 | if ( def->d.socket.domain == AF_UNIX ) |
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349 | return 0; |
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350 | |
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351 | return -1; |
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352 | } else { |
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353 | if ( def->type == ROAR_VIO_DEF_TYPE_FILE ) |
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354 | return roar_vio_socket_init_unix_def(def, def->d.file); |
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355 | |
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356 | return -1; |
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357 | } |
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358 | } |
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359 | #endif |
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360 | |
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361 | if ( def->type != ROAR_VIO_DEF_TYPE_SOCKET ) |
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362 | return -1; |
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363 | |
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364 | if ( def->d.socket.domain == domain ) |
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365 | return 0; |
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366 | |
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367 | // we sould add support to convert IPv4 <-> IPv6 here |
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368 | |
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369 | return -1; |
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370 | } |
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371 | |
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372 | int roar_vio_socket_get_port (char * service, int domain, int type) { |
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373 | #ifdef ROAR_HAVE_GETSERVBYNAME |
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374 | struct servent * serv = NULL; |
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375 | #endif |
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376 | char * proto = NULL; |
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377 | int port; |
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378 | char * ts; |
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379 | |
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380 | if ( service == NULL || domain == -1 || type == -1 ) |
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381 | return -1; |
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382 | |
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383 | if ( (ts = strstr(service, "/")) != NULL ) |
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384 | *ts = 0; |
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385 | |
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386 | if ( sscanf(service, "%i", &port) == 1 ) |
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387 | return port; |
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388 | |
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389 | if ( ts != NULL ) |
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390 | *ts = '/'; |
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391 | |
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392 | switch (domain) { |
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393 | #ifdef ROAR_HAVE_IPV6 |
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394 | case AF_INET6: |
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395 | #endif |
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396 | #ifdef ROAR_HAVE_IPV4 |
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397 | case AF_INET: |
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398 | #endif |
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399 | #if defined(ROAR_HAVE_IPV6) || defined(ROAR_HAVE_IPV4) |
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400 | switch (type) { |
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401 | case SOCK_STREAM: proto = "tcp"; break; |
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402 | case SOCK_DGRAM: proto = "udp"; break; |
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403 | default: |
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404 | return -1; |
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405 | } |
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406 | break; |
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407 | #endif |
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408 | #ifdef ROAR_HAVE_LIBDNET |
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409 | case AF_DECnet: |
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410 | #ifdef ROAR_HAVE_GETOBJECTBYNAME |
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411 | return getobjectbyname(service); |
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412 | #else |
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413 | if ( !strcmp(service, "roar") ) |
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414 | return 0; |
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415 | |
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416 | return -1; |
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417 | #endif |
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418 | break; |
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419 | #endif |
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420 | default: |
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421 | return -1; |
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422 | } |
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423 | |
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424 | #ifdef ROAR_HAVE_GETSERVBYNAME |
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425 | if ( ts != NULL ) |
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426 | *ts = 0; |
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427 | |
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428 | if ( (serv = getservbyname(service, proto)) == NULL ) { |
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429 | ROAR_ERR("roar_vio_socket_get_port(*): Unknown service: %s/%s: %s", service, proto, strerror(errno)); |
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430 | |
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431 | if ( ts != NULL ) |
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432 | *ts = '/'; |
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433 | |
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434 | return -1; |
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435 | } |
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436 | |
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437 | if ( ts != NULL ) |
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438 | *ts = '/'; |
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439 | |
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440 | return ROAR_NET2HOST16(serv->s_port); |
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441 | #endif |
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442 | |
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443 | return -1; |
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444 | } |
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445 | #endif |
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446 | |
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447 | // AF_UNIX: |
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448 | int roar_vio_socket_init_unix_def (struct roar_vio_defaults * def, char * path) { |
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449 | #if defined(ROAR_HAVE_UNIX) && defined(_CAN_OPERATE) |
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450 | if ( def == NULL || path == NULL ) |
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451 | return -1; |
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452 | |
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453 | if ( roar_vio_socket_init_socket_def(def, AF_UNIX, SOCK_STREAM) == -1 ) |
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454 | return -1; |
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455 | |
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456 | strncpy(def->d.socket.sa.un.sun_path, path, sizeof(def->d.socket.sa.un.sun_path) - 1); |
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457 | |
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458 | return 0; |
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459 | #else |
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460 | return -1; |
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461 | #endif |
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462 | } |
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463 | |
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464 | // AF_DECnet: |
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465 | int roar_vio_socket_init_decnetnode_def(struct roar_vio_defaults * def) { |
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466 | #if defined(ROAR_HAVE_LIBDNET) && defined(_CAN_OPERATE) |
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467 | char * node; |
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468 | char * ed; |
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469 | struct nodeent * ne; |
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470 | |
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471 | if ( def == NULL ) |
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472 | return -1; |
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473 | |
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474 | if ( (node = def->d.socket.host) == NULL ) |
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475 | return -1; |
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476 | |
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477 | if ( (ed = strstr(node, "/")) != NULL ) |
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478 | *ed = 0; |
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479 | |
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480 | if ( (ne = getnodebyname(node)) == NULL ) { |
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481 | ROAR_ERR("roar_vio_socket_init_decnetnode_def(*): Can\'t resolve node name '%s'", node); |
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482 | if ( ed != NULL ) *ed = '/'; |
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483 | return -1; |
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484 | } |
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485 | |
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486 | memcpy(&(def->d.socket.sa.dn.sdn_add.a_addr), ne->n_addr, 2); |
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487 | |
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488 | if ( ed != NULL ) *ed = '/'; |
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489 | |
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490 | |
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491 | return 0; |
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492 | #else |
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493 | return -1; |
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494 | #endif |
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495 | } |
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496 | |
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497 | int roar_vio_socket_init_decnet_def (struct roar_vio_defaults * def, char * node, int object, char * objname) { |
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498 | #if defined(ROAR_HAVE_LIBDNET) && defined(_CAN_OPERATE) |
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499 | struct sockaddr_dn * dn; |
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500 | |
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501 | if ( def == NULL ) |
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502 | return -1; |
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503 | |
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504 | if ( object < 1 && objname == NULL ) |
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505 | return -1; |
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506 | |
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507 | if ( object == -1 ) |
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508 | object = roar_vio_socket_get_port(objname, AF_DECnet, SOCK_STREAM); |
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509 | |
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510 | if ( object == -1 ) { |
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511 | if ( objname == NULL ) { |
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512 | return -1; |
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513 | } else { |
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514 | object = 0; |
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515 | } |
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516 | } |
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517 | |
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518 | if ( roar_vio_socket_init_socket_def(def, AF_DECnet, SOCK_STREAM) == -1 ) |
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519 | return -1; |
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520 | |
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521 | def->d.socket.host = node; |
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522 | dn = &(def->d.socket.sa.dn); |
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523 | dn->sdn_flags = 0; |
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524 | dn->sdn_objnum = object; |
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525 | dn->sdn_nodeaddrl = 2; |
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526 | |
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527 | if ( objname == NULL ) { |
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528 | dn->sdn_objnamel = 0; |
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529 | } else { |
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530 | dn->sdn_objnamel = strlen(objname); |
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531 | if ( dn->sdn_objnamel > DN_MAXOBJL ) |
---|
532 | dn->sdn_objnamel = DN_MAXOBJL; |
---|
533 | |
---|
534 | memcpy(&(dn->sdn_objname), objname, dn->sdn_objnamel); |
---|
535 | } |
---|
536 | |
---|
537 | return 0; |
---|
538 | #else |
---|
539 | return -1; |
---|
540 | #endif |
---|
541 | } |
---|
542 | |
---|
543 | |
---|
544 | // AF_INET: |
---|
545 | int roar_vio_socket_init_inet4host_def(struct roar_vio_defaults * def) { |
---|
546 | #if defined(ROAR_HAVE_IPV4) && defined(_CAN_OPERATE) |
---|
547 | struct hostent * he; |
---|
548 | char * ed, * pd; |
---|
549 | |
---|
550 | if ( def == NULL ) |
---|
551 | return -1; |
---|
552 | |
---|
553 | if ( def->d.socket.host == NULL ) |
---|
554 | return -1; |
---|
555 | |
---|
556 | if ( (ed = strstr(def->d.socket.host, "/")) != NULL ) |
---|
557 | *ed = 0; |
---|
558 | |
---|
559 | if ( (pd = strstr(def->d.socket.host, ":")) != NULL ) |
---|
560 | *pd = 0; |
---|
561 | |
---|
562 | if ( (he = gethostbyname(def->d.socket.host)) == NULL ) { |
---|
563 | ROAR_ERR("roar_vio_socket_init_inet4host_def(*): Can\'t resolve host name '%s'", |
---|
564 | def->d.socket.host); |
---|
565 | if ( ed != NULL ) *ed = '/'; |
---|
566 | return -1; |
---|
567 | } |
---|
568 | |
---|
569 | if ( pd != NULL ) *pd = ':'; |
---|
570 | |
---|
571 | if ( ed != NULL ) *ed = '/'; |
---|
572 | |
---|
573 | memcpy((struct in_addr *)&def->d.socket.sa.in.sin_addr, he->h_addr, sizeof(struct in_addr)); |
---|
574 | |
---|
575 | return 0; |
---|
576 | #else |
---|
577 | return -1; |
---|
578 | #endif |
---|
579 | } |
---|
580 | |
---|
581 | int roar_vio_socket_init_inet4_def (struct roar_vio_defaults * def, char * host, int port, int type) { |
---|
582 | #if defined(ROAR_HAVE_IPV4) && defined(_CAN_OPERATE) |
---|
583 | if ( roar_vio_socket_init_socket_def(def, AF_INET, type) == -1 ) |
---|
584 | return -1; |
---|
585 | |
---|
586 | def->d.socket.host = host; |
---|
587 | |
---|
588 | def->d.socket.sa.in.sin_port = ROAR_HOST2NET16(port); |
---|
589 | |
---|
590 | return 0; |
---|
591 | #else |
---|
592 | return -1; |
---|
593 | #endif |
---|
594 | } |
---|
595 | |
---|
596 | int roar_vio_socket_init_tcp4_def (struct roar_vio_defaults * def, char * host, int port) { |
---|
597 | return roar_vio_socket_init_inet4_def(def, host, port, SOCK_STREAM); |
---|
598 | } |
---|
599 | |
---|
600 | int roar_vio_socket_init_udp4_def (struct roar_vio_defaults * def, char * host, int port) { |
---|
601 | return roar_vio_socket_init_inet4_def(def, host, port, SOCK_DGRAM); |
---|
602 | } |
---|
603 | |
---|
604 | |
---|
605 | // AF_INET6: |
---|
606 | int roar_vio_socket_init_inet6host_def(struct roar_vio_defaults * def); |
---|
607 | int roar_vio_socket_init_inet6_def (struct roar_vio_defaults * def, char * host, int port, int type) { |
---|
608 | return -1; |
---|
609 | } |
---|
610 | |
---|
611 | int roar_vio_socket_init_tcp6_def (struct roar_vio_defaults * def, char * host, int port) { |
---|
612 | return roar_vio_socket_init_inet6_def(def, host, port, SOCK_STREAM); |
---|
613 | } |
---|
614 | |
---|
615 | int roar_vio_socket_init_udp6_def (struct roar_vio_defaults * def, char * host, int port) { |
---|
616 | return roar_vio_socket_init_inet6_def(def, host, port, SOCK_DGRAM); |
---|
617 | } |
---|
618 | |
---|
619 | //ll |
---|