1 | //error.c: |
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2 | |
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3 | /* |
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4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2010-2011 |
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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 | |
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38 | int roar_errno = ROAR_ERROR_NONE; |
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39 | |
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40 | int roar_err_int(struct roar_error_frame * frame) { |
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41 | if ( frame == NULL ) |
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42 | return -1; |
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43 | |
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44 | memset(frame, 0, sizeof(struct roar_error_frame)); |
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45 | |
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46 | frame->cmd = -1; |
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47 | frame->ra_errno = -1; |
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48 | frame->ra_suberrno = -1; |
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49 | frame->p_errno = -1; |
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50 | |
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51 | return 0; |
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52 | } |
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53 | |
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54 | void * roar_err_buildmsg(struct roar_message * mes, struct roar_error_frame * frame) { |
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55 | int16_t * d; |
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56 | |
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57 | if ( mes == NULL || frame == NULL ) |
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58 | return NULL; |
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59 | |
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60 | memset(mes, 0, sizeof(struct roar_message)); |
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61 | |
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62 | d = (int16_t*)mes->data; |
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63 | |
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64 | mes->datalen = 8 + frame->datalen; |
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65 | frame->data = &(mes->data[8]); |
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66 | |
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67 | mes->data[0] = 0; // version. |
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68 | mes->data[1] = frame->cmd; |
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69 | mes->data[2] = frame->ra_errno; |
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70 | mes->data[3] = frame->ra_suberrno; |
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71 | d[2] = ROAR_HOST2NET16(frame->p_errno); |
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72 | d[3] = ROAR_HOST2NET16(frame->flags); |
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73 | |
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74 | return frame->data; |
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75 | } |
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76 | |
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77 | int roar_err_parsemsg(struct roar_message * mes, struct roar_error_frame * frame) { |
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78 | int16_t * d; |
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79 | |
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80 | if ( mes == NULL || frame == NULL ) |
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81 | return -1; |
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82 | |
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83 | d = (int16_t*)mes->data; |
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84 | |
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85 | if ( mes->datalen < 8 ) |
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86 | return -1; |
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87 | |
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88 | if ( mes->data[0] != 0 ) |
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89 | return -1; |
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90 | |
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91 | frame->cmd = mes->data[1]; |
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92 | frame->ra_errno = mes->data[2]; |
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93 | frame->ra_suberrno = mes->data[3]; |
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94 | frame->p_errno = ROAR_NET2HOST16(d[2]); |
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95 | frame->flags = ROAR_NET2HOST16(d[3]); |
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96 | |
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97 | frame->datalen = mes->datalen - 8; |
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98 | frame->data = &(mes->data[8]); |
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99 | |
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100 | return 0; |
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101 | } |
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102 | |
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103 | int * roar_errno2(void) { |
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104 | return &roar_errno; |
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105 | } |
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106 | |
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107 | void roar_err_clear(void) { |
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108 | *roar_errno2() = ROAR_ERROR_NONE; |
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109 | } |
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110 | |
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111 | void roar_err_set(const int error) { |
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112 | *roar_errno2() = error; |
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113 | } |
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114 | |
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115 | void roar_err_from_errno(void) { |
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116 | int _roar_errno = ROAR_ERROR_NONE; |
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117 | |
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118 | switch (errno) { |
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119 | #ifdef EPERM |
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120 | case EPERM: _roar_errno = ROAR_ERROR_PERM; break; |
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121 | #endif |
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122 | #ifdef ENOENT |
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123 | case ENOENT: _roar_errno = ROAR_ERROR_NOENT; break; |
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124 | #endif |
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125 | #ifdef EBADMSG |
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126 | case EBADMSG: _roar_errno = ROAR_ERROR_BADMSG; break; |
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127 | #endif |
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128 | #ifdef EBUSY |
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129 | case EBUSY: _roar_errno = ROAR_ERROR_BUSY; break; |
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130 | #endif |
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131 | #ifdef ECONNREFUSED |
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132 | case ECONNREFUSED: _roar_errno = ROAR_ERROR_CONNREFUSED; break; |
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133 | #endif |
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134 | #ifdef ENOSYS |
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135 | case ENOSYS: _roar_errno = ROAR_ERROR_NOSYS; break; |
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136 | #endif |
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137 | #ifdef ENOTSUP |
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138 | case ENOTSUP: _roar_errno = ROAR_ERROR_NOTSUP; break; |
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139 | #endif |
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140 | #ifdef EPIPE |
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141 | case EPIPE: _roar_errno = ROAR_ERROR_PIPE; break; |
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142 | #endif |
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143 | #ifdef EPROTO |
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144 | case EPROTO: _roar_errno = ROAR_ERROR_PROTO; break; |
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145 | #endif |
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146 | #ifdef ERANGE |
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147 | case ERANGE: _roar_errno = ROAR_ERROR_RANGE; break; |
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148 | #endif |
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149 | #ifdef EMSGSIZE |
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150 | case EMSGSIZE: _roar_errno = ROAR_ERROR_MSGSIZE; break; |
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151 | #endif |
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152 | #ifdef ENOMEM |
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153 | case ENOMEM: _roar_errno = ROAR_ERROR_NOMEM; break; |
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154 | #endif |
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155 | #ifdef EINVAL |
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156 | case EINVAL: _roar_errno = ROAR_ERROR_INVAL; break; |
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157 | #endif |
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158 | default: |
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159 | _roar_errno = ROAR_ERROR_UNKNOWN; |
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160 | break; |
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161 | } |
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162 | |
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163 | roar_err_set(_roar_errno); |
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164 | } |
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165 | |
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166 | void roar_err_to_errno(void) { |
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167 | int * err = roar_errno2(); |
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168 | switch (*err) { |
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169 | case ROAR_ERROR_NONE: |
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170 | errno = 0; // just gussing |
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171 | break; |
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172 | #ifdef EPERM |
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173 | case ROAR_ERROR_PERM: |
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174 | errno = EPERM; |
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175 | break; |
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176 | #endif |
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177 | #ifdef ENOENT |
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178 | case ROAR_ERROR_NOENT: |
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179 | errno = ENOENT; |
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180 | break; |
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181 | #endif |
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182 | #ifdef EBADMSG |
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183 | case ROAR_ERROR_BADMSG: |
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184 | errno = EBADMSG; |
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185 | break; |
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186 | #endif |
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187 | #ifdef EBUSY |
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188 | case ROAR_ERROR_BUSY: |
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189 | errno = EBUSY; |
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190 | break; |
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191 | #endif |
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192 | #ifdef ECONNREFUSED |
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193 | case ROAR_ERROR_CONNREFUSED: |
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194 | errno = ECONNREFUSED; |
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195 | break; |
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196 | #endif |
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197 | #ifdef ENOSYS |
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198 | case ROAR_ERROR_NOSYS: |
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199 | errno = ENOSYS; |
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200 | break; |
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201 | #endif |
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202 | #ifdef ENOTSUP |
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203 | case ROAR_ERROR_NOTSUP: |
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204 | errno = ENOTSUP; |
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205 | break; |
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206 | #endif |
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207 | #ifdef EPIPE |
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208 | case ROAR_ERROR_PIPE: |
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209 | errno = EPIPE; |
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210 | break; |
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211 | #endif |
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212 | #ifdef EPROTO |
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213 | case ROAR_ERROR_PROTO: |
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214 | errno = EPROTO; |
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215 | break; |
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216 | #endif |
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217 | #ifdef ERANGE |
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218 | case ROAR_ERROR_RANGE: |
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219 | errno = ERANGE; |
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220 | break; |
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221 | #endif |
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222 | #ifdef EMSGSIZE |
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223 | case ROAR_ERROR_MSGSIZE: |
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224 | errno = EMSGSIZE; |
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225 | break; |
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226 | #endif |
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227 | #ifdef ENOMEM |
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228 | case ROAR_ERROR_NOMEM: |
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229 | errno = ENOMEM; |
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230 | break; |
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231 | #endif |
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232 | #ifdef EINVAL |
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233 | case ROAR_ERROR_INVAL: |
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234 | errno = EINVAL; |
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235 | break; |
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236 | #endif |
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237 | default: |
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238 | #ifdef EINVAL |
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239 | errno = EINVAL; |
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240 | #else |
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241 | errno = -1; // just guess |
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242 | #endif |
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243 | break; |
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244 | } |
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245 | } |
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246 | |
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247 | |
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248 | const char * roar_error2str(const int error) { |
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249 | const struct { |
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250 | const int err; |
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251 | const char * msg; |
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252 | } msgs[] = { |
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253 | {ROAR_ERROR_NONE, "No error"}, |
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254 | {ROAR_ERROR_PERM, "Operation not permitted"}, |
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255 | {ROAR_ERROR_NOENT, "No such object, file or directory"}, |
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256 | {ROAR_ERROR_BADMSG, "Bad message"}, |
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257 | {ROAR_ERROR_BUSY, "Device or resource busy"}, |
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258 | {ROAR_ERROR_CONNREFUSED, "Connection refused"}, |
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259 | {ROAR_ERROR_NOSYS, "Function not implemented"}, |
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260 | {ROAR_ERROR_NOTSUP, "Operation not supported"}, |
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261 | {ROAR_ERROR_PIPE, "Broken pipe"}, |
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262 | {ROAR_ERROR_PROTO, "Protocol error"}, |
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263 | {ROAR_ERROR_RANGE, "Result too large or parameter out of range"}, |
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264 | {ROAR_ERROR_MSGSIZE, "Message too long"}, |
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265 | {ROAR_ERROR_NOMEM, "Not enough space"}, |
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266 | {ROAR_ERROR_INVAL, "Invalid argument"}, |
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267 | {-1, NULL} |
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268 | }; |
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269 | int i; |
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270 | |
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271 | for (i = 0; msgs[i].msg != NULL; i++) |
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272 | if ( msgs[i].err == error ) |
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273 | return msgs[i].msg; |
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274 | |
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275 | return NULL; |
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276 | } |
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277 | |
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278 | //ll |
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