1 | //vio.c: |
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2 | |
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3 | /* |
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4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008-2010 |
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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, 51 Franklin Street, Fifth Floor, |
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22 | * Boston, MA 02110-1301, USA. |
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23 | * |
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24 | * NOTE for everyone want's to change something and send patches: |
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25 | * read README and HACKING! There a addition information on |
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26 | * the license of this document you need to read before you send |
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27 | * any patches. |
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28 | * |
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29 | * NOTE for uses of non-GPL (LGPL,...) software using libesd, libartsc |
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30 | * or libpulse*: |
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31 | * The libs libroaresd, libroararts and libroarpulse link this lib |
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32 | * and are therefore GPL. Because of this it may be illigal to use |
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33 | * them with any software that uses libesd, libartsc or libpulse*. |
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34 | */ |
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35 | |
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36 | #include "libroar.h" |
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37 | #include <sys/ioctl.h> |
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38 | |
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39 | #ifdef ROAR_HAVE_IO_POSIX |
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40 | #define _CAN_OPERATE |
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41 | #endif |
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42 | |
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43 | int roar_vio_init_calls (struct roar_vio_calls * calls) { |
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44 | #ifdef _CAN_OPERATE |
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45 | if ( calls == NULL ) |
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46 | return -1; |
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47 | |
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48 | memset((void*)calls, 0, sizeof(struct roar_vio_calls)); |
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49 | |
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50 | /* |
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51 | calls->read = (ssize_t (*)(int fd, void *buf, size_t count, void * inst))read; |
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52 | calls->write = (ssize_t (*)(int fd, void *buf, size_t count, void * inst))write; |
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53 | calls->lseek = (off_t (*)(int fildes, off_t offset, int whence, void * inst))lseek; |
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54 | */ |
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55 | |
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56 | calls->read = roar_vio_basic_read; |
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57 | calls->write = roar_vio_basic_write; |
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58 | calls->lseek = roar_vio_basic_lseek; |
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59 | calls->nonblock = roar_vio_basic_nonblock; |
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60 | calls->sync = roar_vio_basic_sync; |
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61 | calls->ctl = roar_vio_basic_ctl; |
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62 | calls->close = roar_vio_basic_close; |
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63 | |
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64 | return 0; |
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65 | #else |
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66 | return -1; |
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67 | #endif |
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68 | } |
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69 | |
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70 | int roar_vio_set_inst (struct roar_vio_calls * vio, void * inst) { |
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71 | if ( vio == NULL ) |
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72 | return -1; |
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73 | |
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74 | vio->inst = inst; |
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75 | |
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76 | return 0; |
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77 | } |
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78 | |
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79 | int roar_vio_set_fh (struct roar_vio_calls * vio, int fh) { |
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80 | return roar_vio_set_inst(vio, (void*)(ROAR_INSTINT)(fh + 1)); |
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81 | } |
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82 | |
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83 | int roar_vio_get_fh (struct roar_vio_calls * vio) { |
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84 | if ( vio == NULL ) |
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85 | return -1; |
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86 | |
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87 | return ((int)(ROAR_INSTINT)vio->inst) - 1; |
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88 | } |
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89 | |
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90 | |
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91 | ssize_t roar_vio_read (struct roar_vio_calls * vio, void *buf, size_t count) { |
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92 | ROAR_DBG("roar_vio_read(vio=%p, buf=%p, count=%u) = ?", vio, buf, (unsigned int)count); |
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93 | |
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94 | if ( vio == NULL ) |
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95 | return -1; |
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96 | |
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97 | if ( vio->read == NULL ) |
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98 | return -1; |
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99 | |
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100 | return vio->read(vio, buf, count); |
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101 | } |
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102 | |
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103 | ssize_t roar_vio_write(struct roar_vio_calls * vio, void *buf, size_t count) { |
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104 | ROAR_DBG("roar_vio_write(vio=%p, buf=%p, count=%u) = ?", vio, buf, (unsigned int)count); |
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105 | |
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106 | if ( vio == NULL ) |
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107 | return -1; |
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108 | |
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109 | if ( vio->write == NULL ) |
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110 | return -1; |
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111 | |
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112 | return vio->write(vio, buf, count); |
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113 | } |
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114 | |
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115 | off_t roar_vio_lseek(struct roar_vio_calls * vio, off_t offset, int whence) { |
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116 | ROAR_DBG("roar_vio_lseek(vio=%p, offset=%u, whence=%i) = ?", vio, (unsigned int)offset, whence); |
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117 | |
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118 | if ( vio == NULL ) |
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119 | return -1; |
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120 | |
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121 | if ( vio->lseek == NULL ) |
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122 | return -1; |
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123 | |
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124 | return vio->lseek(vio, offset, whence); |
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125 | } |
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126 | |
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127 | int roar_vio_nonblock(struct roar_vio_calls * vio, int state) { |
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128 | ROAR_DBG("roar_vio_nonblock(vio=%p, state=%i) = ?", vio, state); |
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129 | |
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130 | if ( vio == NULL ) |
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131 | return -1; |
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132 | |
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133 | if ( vio->nonblock == NULL ) |
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134 | return -1; |
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135 | |
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136 | return vio->nonblock(vio, state); |
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137 | } |
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138 | |
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139 | int roar_vio_sync (struct roar_vio_calls * vio) { |
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140 | ROAR_DBG("roar_vio_sync(vio=%p) = ?", vio); |
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141 | |
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142 | if ( vio == NULL ) |
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143 | return -1; |
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144 | |
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145 | if ( vio->sync == NULL ) |
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146 | return -1; |
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147 | |
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148 | return vio->sync(vio); |
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149 | } |
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150 | |
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151 | int roar_vio_ctl (struct roar_vio_calls * vio, int cmd, void * data) { |
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152 | ROAR_DBG("roar_vio_ctl(vio=%p, cmd=%i, data=%p) = ?", vio, cmd, data); |
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153 | |
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154 | if ( vio == NULL ) |
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155 | return -1; |
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156 | |
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157 | ROAR_DBG("roar_vio_ctl(vio=%p, cmd=0x%.8x, data=%p): vio->ctl=%p", vio, cmd, data, vio->ctl); |
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158 | |
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159 | if ( vio->ctl == NULL ) |
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160 | return -1; |
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161 | |
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162 | return vio->ctl(vio, cmd, data); |
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163 | } |
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164 | |
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165 | int roar_vio_close (struct roar_vio_calls * vio) { |
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166 | ROAR_DBG("roar_vio_close(vio=%p) = ?", vio); |
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167 | |
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168 | if ( vio == NULL ) |
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169 | return -1; |
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170 | |
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171 | if ( vio->close == NULL ) |
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172 | return -1; |
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173 | |
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174 | return vio->close(vio); |
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175 | } |
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176 | |
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177 | // specal commands: |
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178 | int roar_vio_accept (struct roar_vio_calls * calls, struct roar_vio_calls * dst) { |
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179 | if (dst == NULL || calls == NULL) |
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180 | return -1; |
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181 | |
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182 | return roar_vio_ctl(dst, ROAR_VIO_CTL_ACCEPT, calls); |
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183 | } |
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184 | |
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185 | int roar_vio_shutdown(struct roar_vio_calls * vio, int how) { |
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186 | return roar_vio_ctl(vio, ROAR_VIO_CTL_SHUTDOWN, &how); |
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187 | } |
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188 | |
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189 | // converters: |
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190 | int roar_vio_open_file (struct roar_vio_calls * calls, char * filename, int flags, mode_t mode) { |
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191 | #ifdef _CAN_OPERATE |
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192 | int fh; |
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193 | |
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194 | if ( calls == NULL || filename == NULL ) |
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195 | return -1; |
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196 | |
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197 | #ifdef ROAR_TARGET_WIN32 |
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198 | flags |= O_BINARY; |
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199 | #endif |
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200 | |
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201 | if ( (fh = open(filename, flags, mode)) == -1 ) |
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202 | return -1; |
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203 | |
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204 | if ( roar_vio_open_fh(calls, fh) == -1 ) { |
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205 | close(fh); |
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206 | return -1; |
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207 | } |
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208 | |
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209 | return 0; |
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210 | #else |
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211 | return -1; |
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212 | #endif |
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213 | } |
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214 | |
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215 | int roar_vio_open_fh (struct roar_vio_calls * calls, int fh) { |
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216 | if ( calls == NULL ) |
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217 | return -1; |
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218 | |
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219 | if ( roar_vio_init_calls(calls) == -1 ) |
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220 | return -1; |
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221 | |
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222 | return roar_vio_set_fh(calls, fh); |
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223 | } |
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224 | |
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225 | int roar_vio_open_fh_socket(struct roar_vio_calls * calls, int fh) { |
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226 | if ( calls == NULL ) |
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227 | return -1; |
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228 | |
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229 | if ( roar_vio_open_fh(calls, fh) == -1 ) |
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230 | return -1; |
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231 | |
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232 | #ifdef ROAR_TARGET_WIN32 |
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233 | calls->read = roar_vio_winsock_read; |
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234 | calls->write = roar_vio_winsock_write; |
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235 | calls->nonblock = roar_vio_winsock_nonblock; |
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236 | calls->sync = roar_vio_winsock_sync; |
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237 | calls->ctl = roar_vio_winsock_ctl; |
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238 | calls->close = roar_vio_winsock_close; |
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239 | #else |
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240 | calls->sync = roar_vio_null_sync; |
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241 | #endif |
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242 | |
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243 | return 0; |
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244 | } |
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245 | |
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246 | int roar_vio_open_socket (struct roar_vio_calls * calls, char * host, int port) { |
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247 | int fh; |
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248 | |
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249 | if ( calls == NULL ) |
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250 | return -1; |
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251 | |
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252 | if ( (fh = roar_socket_connect(host, port)) == -1 ) |
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253 | return -1; |
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254 | |
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255 | return roar_vio_open_fh_socket(calls, fh); |
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256 | } |
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257 | |
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258 | int roar_vio_open_socket_listen(struct roar_vio_calls * calls, int type, char * host, int port) { |
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259 | int fh; |
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260 | |
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261 | if ( calls == NULL ) |
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262 | return -1; |
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263 | |
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264 | if ( (fh = roar_socket_listen(type, host, port)) == -1 ) |
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265 | return -1; |
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266 | |
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267 | return roar_vio_open_fh_socket(calls, fh); |
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268 | } |
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269 | |
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270 | int roar_vio_simple_stream (struct roar_vio_calls * calls, int rate, int channels, int bits, int codec, |
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271 | char * server, int dir, char * name) { |
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272 | int fh; |
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273 | |
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274 | if ( calls == NULL ) |
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275 | return -1; |
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276 | |
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277 | if ( (fh = roar_simple_stream(rate, channels, bits, codec, server, dir, name)) == -1 ) |
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278 | return -1; |
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279 | |
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280 | return roar_vio_open_fh_socket(calls, fh); |
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281 | } |
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282 | |
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283 | int roar_vio_simple_new_stream_obj (struct roar_vio_calls * calls, |
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284 | struct roar_connection * con, |
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285 | struct roar_stream * s, |
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286 | int rate, int channels, int bits, int codec, int dir) { |
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287 | struct roar_stream stream; |
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288 | int fh; |
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289 | |
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290 | if ( calls == NULL ) |
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291 | return -1; |
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292 | |
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293 | if ( s == NULL ) |
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294 | s = &stream; |
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295 | |
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296 | if ( (fh = roar_simple_new_stream_obj(con, s, rate, channels, bits, codec, dir)) == -1 ) |
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297 | return -1; |
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298 | |
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299 | return roar_vio_open_fh_socket(calls, fh); |
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300 | } |
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301 | |
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302 | // VIOs: |
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303 | |
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304 | // basic |
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305 | ssize_t roar_vio_basic_read (struct roar_vio_calls * vio, void *buf, size_t count) { |
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306 | #ifdef _CAN_OPERATE |
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307 | return read(roar_vio_get_fh(vio), buf, count); |
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308 | #else |
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309 | return -1; |
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310 | #endif |
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311 | } |
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312 | |
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313 | ssize_t roar_vio_basic_write(struct roar_vio_calls * vio, void *buf, size_t count) { |
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314 | #ifdef _CAN_OPERATE |
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315 | return write(roar_vio_get_fh(vio), buf, count); |
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316 | #else |
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317 | return -1; |
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318 | #endif |
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319 | } |
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320 | |
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321 | off_t roar_vio_basic_lseek(struct roar_vio_calls * vio, off_t offset, int whence) { |
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322 | #ifdef _CAN_OPERATE |
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323 | return lseek(roar_vio_get_fh(vio), offset, whence); |
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324 | #else |
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325 | return -1; |
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326 | #endif |
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327 | } |
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328 | |
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329 | int roar_vio_basic_nonblock(struct roar_vio_calls * vio, int state) { |
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330 | if ( roar_socket_nonblock(roar_vio_get_fh(vio), state) == -1 ) |
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331 | return -1; |
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332 | |
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333 | if ( state == ROAR_SOCKET_NONBLOCK ) |
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334 | return 0; |
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335 | |
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336 | roar_vio_sync(vio); |
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337 | |
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338 | return 0; |
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339 | } |
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340 | |
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341 | int roar_vio_basic_sync (struct roar_vio_calls * vio) { |
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342 | #ifdef ROAR_FDATASYNC |
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343 | return ROAR_FDATASYNC(roar_vio_get_fh(vio)); |
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344 | #else |
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345 | return 0; |
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346 | #endif |
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347 | } |
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348 | |
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349 | int roar_vio_basic_ctl (struct roar_vio_calls * vio, int cmd, void * data) { |
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350 | struct roar_vio_sysio_ioctl * sysioctl; |
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351 | int tmp; |
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352 | int s_r = 0, s_w = 0; |
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353 | |
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354 | if ( vio == NULL || cmd == -1 ) |
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355 | return -1; |
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356 | |
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357 | ROAR_DBG("roar_vio_basic_ctl(vio=%p, cmd=0x%.8x, data=%p) = ?", vio, cmd, data); |
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358 | |
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359 | switch (cmd) { |
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360 | case ROAR_VIO_CTL_GET_NAME: |
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361 | if ( data == NULL ) |
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362 | return -1; |
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363 | |
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364 | *(char**)data = "basic"; |
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365 | return 0; |
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366 | break; |
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367 | case ROAR_VIO_CTL_GET_FH: |
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368 | case ROAR_VIO_CTL_GET_READ_FH: |
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369 | case ROAR_VIO_CTL_GET_WRITE_FH: |
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370 | case ROAR_VIO_CTL_GET_SELECT_FH: |
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371 | case ROAR_VIO_CTL_GET_SELECT_READ_FH: |
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372 | case ROAR_VIO_CTL_GET_SELECT_WRITE_FH: |
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373 | ROAR_DBG("roar_vio_basic_ctl(vio=%p, cmd=ROAR_VIO_CTL_GET_*FH(0x%.8x), data=%p) = 0 // fh=%i", vio, cmd, data, roar_vio_get_fh(vio)); |
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374 | *(int*)data = roar_vio_get_fh(vio); |
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375 | return 0; |
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376 | break; |
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377 | case ROAR_VIO_CTL_SET_NOSYNC: |
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378 | vio->sync = NULL; |
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379 | return 0; |
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380 | break; |
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381 | case ROAR_VIO_CTL_ACCEPT: |
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382 | tmp = accept(roar_vio_get_fh(vio), NULL, 0); |
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383 | if ( tmp == -1 ) |
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384 | return -1; |
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385 | |
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386 | // most proably a socket. |
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387 | if ( roar_vio_open_fh_socket(data, tmp) == -1 ) { |
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388 | #ifdef ROAR_TARGET_WIN32 |
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389 | closesocket(tmp); |
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390 | #else |
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391 | close(tmp); |
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392 | #endif |
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393 | return -1; |
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394 | } |
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395 | |
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396 | return 0; |
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397 | break; |
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398 | case ROAR_VIO_CTL_SHUTDOWN: |
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399 | tmp = *(int*)data; |
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400 | |
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401 | if ( tmp & ROAR_VIO_SHUTDOWN_READ ) { |
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402 | s_r = 1; |
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403 | tmp -= ROAR_VIO_SHUTDOWN_READ; |
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404 | } |
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405 | |
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406 | if ( tmp & ROAR_VIO_SHUTDOWN_WRITE ) { |
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407 | s_w = 1; |
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408 | tmp -= ROAR_VIO_SHUTDOWN_WRITE; |
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409 | } |
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410 | |
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411 | if ( tmp != 0 ) /* we currently only support R and W shutdowns */ |
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412 | return -1; |
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413 | |
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414 | if ( s_r && s_w ) { |
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415 | tmp = SHUT_RDWR; |
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416 | } else if ( s_r ) { |
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417 | tmp = SHUT_RD; |
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418 | } else if ( s_w ) { |
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419 | tmp = SHUT_WR; |
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420 | } else { |
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421 | return 0; // nothing to do. |
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422 | } |
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423 | |
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424 | return ROAR_SHUTDOWN(roar_vio_get_fh(vio), tmp); |
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425 | break; |
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426 | case ROAR_VIO_CTL_SYSIO_IOCTL: |
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427 | sysioctl = data; |
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428 | return ioctl(roar_vio_get_fh(vio), sysioctl->cmd, sysioctl->argp); |
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429 | break; |
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430 | } |
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431 | |
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432 | return -1; |
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433 | } |
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434 | |
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435 | int roar_vio_basic_close (struct roar_vio_calls * vio) { |
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436 | #ifdef _CAN_OPERATE |
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437 | if ( roar_vio_get_fh(vio) != -1 ) |
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438 | return close(roar_vio_get_fh(vio)); |
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439 | |
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440 | return 0; |
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441 | #else |
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442 | return -1; |
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443 | #endif |
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444 | } |
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445 | |
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446 | // null |
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447 | ssize_t roar_vio_null_rw (struct roar_vio_calls * vio, void *buf, size_t count) { |
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448 | if ( vio == NULL || buf == NULL ) |
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449 | return -1; |
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450 | |
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451 | return 0; |
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452 | } |
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453 | |
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454 | int roar_vio_null_sync (struct roar_vio_calls * vio) { |
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455 | return 0; |
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456 | } |
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457 | |
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458 | // pass |
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459 | int roar_vio_open_pass (struct roar_vio_calls * calls, struct roar_vio_calls * dst) { |
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460 | if ( calls == NULL ) |
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461 | return -1; |
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462 | |
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463 | memset((void*)calls, 0, sizeof(struct roar_vio_calls)); |
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464 | |
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465 | calls->read = roar_vio_pass_read; |
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466 | calls->write = roar_vio_pass_write; |
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467 | calls->lseek = roar_vio_pass_lseek; |
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468 | calls->nonblock = roar_vio_pass_nonblock; |
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469 | calls->sync = roar_vio_pass_sync; |
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470 | calls->ctl = roar_vio_pass_ctl; |
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471 | calls->close = roar_vio_pass_close; |
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472 | |
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473 | calls->inst = dst; |
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474 | |
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475 | return 0; |
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476 | } |
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477 | |
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478 | ssize_t roar_vio_pass_read (struct roar_vio_calls * vio, void *buf, size_t count) { |
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479 | return roar_vio_read((struct roar_vio_calls *) vio->inst, buf, count); |
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480 | } |
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481 | |
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482 | ssize_t roar_vio_pass_write(struct roar_vio_calls * vio, void *buf, size_t count) { |
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483 | return roar_vio_write((struct roar_vio_calls *) vio->inst, buf, count); |
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484 | } |
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485 | |
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486 | off_t roar_vio_pass_lseek(struct roar_vio_calls * vio, off_t offset, int whence) { |
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487 | return roar_vio_lseek((struct roar_vio_calls *) vio->inst, offset, whence); |
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488 | } |
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489 | |
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490 | int roar_vio_pass_nonblock(struct roar_vio_calls * vio, int state) { |
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491 | return roar_vio_nonblock((struct roar_vio_calls *) vio->inst, state); |
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492 | } |
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493 | |
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494 | int roar_vio_pass_sync (struct roar_vio_calls * vio) { |
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495 | return roar_vio_sync((struct roar_vio_calls *) vio->inst); |
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496 | } |
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497 | |
---|
498 | int roar_vio_pass_ctl (struct roar_vio_calls * vio, int cmd, void * data) { |
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499 | if (vio == NULL || cmd == -1) |
---|
500 | return -1; |
---|
501 | |
---|
502 | ROAR_DBG("roar_vio_pass_ctl(vio=%p, cmd=0x%.8x, data=%p) = ?", vio, cmd, data); |
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503 | |
---|
504 | switch (cmd) { |
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505 | case ROAR_VIO_CTL_GET_NAME: |
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506 | if ( data == NULL ) |
---|
507 | return -1; |
---|
508 | |
---|
509 | *(char**)data = "pass"; |
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510 | return 0; |
---|
511 | break; |
---|
512 | case ROAR_VIO_CTL_GET_NEXT: |
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513 | *(struct roar_vio_calls **)data = vio->inst; |
---|
514 | return 0; |
---|
515 | break; |
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516 | case ROAR_VIO_CTL_SET_NEXT: |
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517 | vio->inst = *(struct roar_vio_calls **)data; |
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518 | return 0; |
---|
519 | break; |
---|
520 | } |
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521 | |
---|
522 | return roar_vio_ctl((struct roar_vio_calls *) vio->inst, cmd, data); |
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523 | } |
---|
524 | |
---|
525 | int roar_vio_pass_close (struct roar_vio_calls * vio) { |
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526 | return roar_vio_close((struct roar_vio_calls *) vio->inst); |
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527 | } |
---|
528 | |
---|
529 | |
---|
530 | // re |
---|
531 | int roar_vio_open_re (struct roar_vio_calls * calls, struct roar_vio_calls * dst) { |
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532 | if ( roar_vio_open_pass(calls, dst) == -1 ) |
---|
533 | return -1; |
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534 | |
---|
535 | calls->read = roar_vio_re_read; |
---|
536 | calls->write = roar_vio_re_write; |
---|
537 | calls->lseek = roar_vio_re_lseek; |
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538 | |
---|
539 | return 0; |
---|
540 | } |
---|
541 | ssize_t roar_vio_re_read (struct roar_vio_calls * vio, void *buf, size_t count) { |
---|
542 | size_t len = 0; |
---|
543 | ssize_t r = -1; |
---|
544 | |
---|
545 | if ( vio == NULL ) |
---|
546 | return -1; |
---|
547 | |
---|
548 | if ( vio->inst == NULL ) |
---|
549 | return -1; |
---|
550 | |
---|
551 | errno = 0; |
---|
552 | |
---|
553 | while ( (r = roar_vio_read((struct roar_vio_calls *) vio->inst, buf, count)) > 0 ) { |
---|
554 | len += r; |
---|
555 | buf += r; |
---|
556 | count -= r; |
---|
557 | if ( count == 0 ) |
---|
558 | break; |
---|
559 | } |
---|
560 | |
---|
561 | if ( len == 0 && r == -1 ) |
---|
562 | return -1; |
---|
563 | |
---|
564 | return len; |
---|
565 | } |
---|
566 | |
---|
567 | ssize_t roar_vio_re_write(struct roar_vio_calls * vio, void *buf, size_t count) { |
---|
568 | size_t len = 0; |
---|
569 | ssize_t r = -1; |
---|
570 | |
---|
571 | if ( vio == NULL ) |
---|
572 | return -1; |
---|
573 | |
---|
574 | if ( vio->inst == NULL ) |
---|
575 | return -1; |
---|
576 | |
---|
577 | errno = 0; |
---|
578 | |
---|
579 | while ( (r = roar_vio_write((struct roar_vio_calls *) vio->inst, buf, count)) > 0 ) { |
---|
580 | len += r; |
---|
581 | buf += r; |
---|
582 | count -= r; |
---|
583 | if ( count == 0 ) |
---|
584 | break; |
---|
585 | } |
---|
586 | |
---|
587 | if ( len == 0 && r == -1 ) |
---|
588 | return -1; |
---|
589 | |
---|
590 | return len; |
---|
591 | } |
---|
592 | |
---|
593 | // TODO: we should do a some more intelgent thing here. |
---|
594 | off_t roar_vio_re_lseek(struct roar_vio_calls * vio, off_t offset, int whence) { |
---|
595 | return roar_vio_lseek((struct roar_vio_calls *) vio->inst, offset, whence); |
---|
596 | } |
---|
597 | |
---|
598 | //ll |
---|