1 | //roardl.c: |
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2 | |
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3 | /* |
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4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2010-2012 |
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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 | #ifdef ROAR_HAVE_H_DIRENT |
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39 | #include <dirent.h> |
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40 | #endif |
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41 | |
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42 | #if defined(ROAR_HAVE_H_DLFCN) && !defined(RTLD_NEXT) |
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43 | #define RTLD_NEXT ((void *) -1L) |
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44 | #endif |
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45 | |
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46 | #define RTF_RA_INITED 0x0001 |
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47 | #define RTF_APPSCHED_INITED 0x0002 |
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48 | #define RTF_APPSCHED_FREED 0x0004 |
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49 | |
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50 | struct roar_dl_lhandle { |
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51 | size_t refc; // currently unused. |
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52 | int flags; |
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53 | char * libname; // only used for ROAR_DL_FLAG_STATIC. |
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54 | struct roar_dl_librarypara * para; |
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55 | struct roar_dl_libraryinst * lib; |
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56 | struct { |
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57 | struct roar_error_state error_state; |
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58 | void * global_data; |
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59 | void * global_data_state; |
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60 | struct roar_notify_core * notifycore; |
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61 | } context; |
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62 | unsigned int runtime_flags; |
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63 | #if defined(ROAR_HAVE_H_DLFCN) |
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64 | void * handle; |
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65 | #elif defined(ROAR_TARGET_WIN32) |
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66 | HMODULE handle; |
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67 | #endif |
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68 | }; |
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69 | |
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70 | // TODO: this should be removed on next SONAME change. |
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71 | static struct roar_dl_lhandle * __currently_inited = NULL; |
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72 | static int __currently_inited_fn = -1; |
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73 | |
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74 | struct roar_dl_librarypara * roar_dl_para_new(const char * args, void * binargv, |
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75 | const char * appname, const char * abiversion) { |
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76 | struct roar_dl_librarypara * ret = roar_mm_malloc(sizeof(struct roar_dl_librarypara)); |
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77 | ssize_t argc; |
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78 | int err; |
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79 | |
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80 | if ( ret == NULL ) |
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81 | return NULL; |
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82 | |
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83 | memset(ret, 0, sizeof(struct roar_dl_librarypara)); |
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84 | |
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85 | ret->version = ROAR_DL_LIBPARA_VERSION; |
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86 | ret->len = sizeof(struct roar_dl_librarypara); |
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87 | ret->refc = 1; |
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88 | ret->argc = 0; |
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89 | ret->argv = NULL; |
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90 | ret->args_store = NULL; |
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91 | ret->binargv = binargv; |
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92 | ret->appname = appname; |
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93 | ret->abiversion = abiversion; |
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94 | |
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95 | if ( args != NULL ) { |
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96 | ret->args_store = roar_mm_strdup(args); |
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97 | if ( ret->args_store == NULL ) { |
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98 | err = roar_error; |
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99 | roar_mm_free(ret); |
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100 | roar_error = err; |
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101 | return NULL; |
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102 | } |
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103 | |
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104 | argc = roar_keyval_split(&(ret->argv), ret->args_store, NULL, NULL, 1); |
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105 | if ( argc == -1 ) { |
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106 | err = roar_error; |
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107 | roar_mm_free(ret->args_store); |
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108 | roar_mm_free(ret); |
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109 | roar_error = err; |
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110 | return NULL; |
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111 | } |
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112 | |
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113 | ret->argc = argc; |
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114 | } |
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115 | |
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116 | return ret; |
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117 | } |
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118 | |
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119 | int roar_dl_para_ref (struct roar_dl_librarypara * para) { |
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120 | if ( para == NULL ) { |
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121 | ROAR_DBG("roar_dl_para_ref(para=%p) = -1 // error=FAULT", para); |
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122 | roar_err_set(ROAR_ERROR_FAULT); |
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123 | return -1; |
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124 | } |
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125 | |
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126 | para->refc++; |
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127 | |
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128 | ROAR_DBG("roar_dl_para_ref(para=%p) = 0", para); |
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129 | return 0; |
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130 | } |
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131 | |
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132 | int roar_dl_para_unref (struct roar_dl_librarypara * para) { |
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133 | if ( para == NULL ) { |
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134 | ROAR_DBG("roar_dl_para_unref(para=%p) = -1 // error=FAULT", para); |
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135 | roar_err_set(ROAR_ERROR_FAULT); |
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136 | return -1; |
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137 | } |
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138 | |
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139 | para->refc--; |
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140 | |
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141 | if ( para->refc ) { |
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142 | ROAR_DBG("roar_dl_para_unref(para=%p) = 0", para); |
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143 | return 0; |
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144 | } |
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145 | |
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146 | if ( para->notifycore != NULL ) |
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147 | roar_notify_core_unref(para->notifycore); |
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148 | |
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149 | if ( para->args_store != NULL ) { |
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150 | roar_mm_free(para->args_store); |
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151 | roar_mm_free(para->argv); |
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152 | } |
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153 | |
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154 | roar_mm_free(para); |
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155 | |
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156 | ROAR_DBG("roar_dl_para_unref(para=%p) = 0", para); |
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157 | return 0; |
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158 | } |
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159 | int roar_dl_para_check_version (struct roar_dl_librarypara * para, |
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160 | const char * appname, const char * abiversion) { |
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161 | if ( para == NULL ) { |
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162 | roar_err_set(ROAR_ERROR_FAULT); |
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163 | return -1; |
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164 | } |
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165 | |
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166 | // check if both appnames are NULL or non-NULL. |
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167 | if ( (para->appname == NULL && appname != NULL) || (para->appname != NULL && appname == NULL) ) { |
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168 | roar_err_set(ROAR_ERROR_BADHOST); |
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169 | return -1; |
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170 | } |
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171 | |
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172 | // check if the appname matches if given. |
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173 | if ( para->appname != NULL && !!strcmp(para->appname, appname) ) { |
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174 | roar_err_set(ROAR_ERROR_BADHOST); |
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175 | return -1; |
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176 | } |
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177 | |
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178 | // check if both ABI versions are NULL or non-NULL. |
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179 | if ( (para->abiversion == NULL && abiversion != NULL) || (para->abiversion != NULL && abiversion == NULL) ) { |
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180 | roar_err_set(ROAR_ERROR_BADVERSION); |
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181 | return -1; |
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182 | } |
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183 | |
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184 | // check if the ABI versions matches if given. |
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185 | if ( para->abiversion != NULL && !!strcmp(para->abiversion, abiversion) ) { |
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186 | roar_err_set(ROAR_ERROR_BADVERSION); |
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187 | return -1; |
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188 | } |
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189 | |
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190 | return 0; |
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191 | } |
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192 | |
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193 | |
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194 | #if defined(ROAR_HAVE_H_DLFCN) |
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195 | static void * _roardl2ldl (struct roar_dl_lhandle * lhandle) { |
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196 | ROAR_DBG("_roardl2ldl(lhandle=%p) = ?", lhandle); |
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197 | |
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198 | if ( (void*)lhandle < (void*)128 ) { |
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199 | switch ((int)(void*)lhandle) { |
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200 | case (int)(void*)ROAR_DL_HANDLE_DEFAULT: |
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201 | case (int)(void*)ROAR_DL_HANDLE_LIBROAR: |
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202 | case (int)(void*)ROAR_DL_HANDLE_APPLICATION: |
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203 | ROAR_DBG("_roardl2ldl(lhandle=%p) = %p", lhandle, (void*)RTLD_DEFAULT); |
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204 | return RTLD_DEFAULT; |
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205 | break; |
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206 | case (int)(void*)ROAR_DL_HANDLE_NEXT: |
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207 | ROAR_DBG("_roardl2ldl(lhandle=%p) = %p", lhandle, (void*)RTLD_NEXT); |
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208 | return RTLD_NEXT; |
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209 | break; |
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210 | } |
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211 | } |
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212 | |
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213 | ROAR_DBG("_roardl2ldl(lhandle=%p) = %p", lhandle, (void*)(lhandle->handle)); |
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214 | return lhandle->handle; |
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215 | } |
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216 | #elif defined(ROAR_TARGET_WIN32) |
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217 | static HMODULE _roardl2winhandle(struct roar_dl_lhandle * lhandle) { |
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218 | if ( (void*)lhandle < (void*)128 ) { |
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219 | return NULL; |
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220 | } |
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221 | return lhandle->handle; |
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222 | } |
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223 | #endif |
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224 | |
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225 | #ifdef ROAR_HAVE_H_DIRENT |
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226 | // pvn = prefix, host vendor, host name |
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227 | static struct roar_dl_lhandle * _load_from_path_pvn(const char * name, |
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228 | int flags, int ra_init, |
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229 | struct roar_dl_librarypara * para, |
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230 | const char * prefix, |
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231 | const char * hostvendor, |
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232 | const char * hostname) { |
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233 | struct roar_dl_lhandle * ret = NULL; |
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234 | int i, j; |
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235 | char path[1024]; |
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236 | const char * path_format[] = {"%s/%s/%s", "%s/%s/universal", "%s/universal/universal"}; |
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237 | DIR * dir; |
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238 | struct dirent * dirent; |
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239 | char file[1024]; |
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240 | const char * file_format[] = {"%s/%s/%s", "%s/%s/%s" ROAR_SHARED_SUFFIX, "%s/%s/lib%s" ROAR_SHARED_SUFFIX}; |
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241 | // cont->handle[idx] = roar_dl_open(name, ROAR_DL_FLAG_DEFAULTS, 1, para); |
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242 | //#vars: $PREFIX_PLUGINS, $hostvendor, $hostname, $name |
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243 | //#search order: $PREFIX_PLUGINS/{$hostvendor/{$hostname,universal},universal/universal}/*/{,lib}$name.so |
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244 | |
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245 | for (i = 0; i < 3; i++) { |
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246 | snprintf(path, sizeof(path), path_format[i], prefix, hostvendor, hostname); |
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247 | dir = opendir(path); |
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248 | if ( dir == NULL ) |
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249 | continue; |
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250 | |
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251 | while ((dirent = readdir(dir)) != NULL) { |
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252 | if ( !strcmp(dirent->d_name, ".") || !strcmp(dirent->d_name, "..") ) |
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253 | continue; |
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254 | |
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255 | for (j = 0; j < 3; j++) { |
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256 | snprintf(file, sizeof(file), file_format[j], path, dirent->d_name, name); |
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257 | ret = roar_dl_open(file, flags, ra_init, para); |
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258 | if ( ret != NULL ) { |
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259 | closedir(dir); |
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260 | return ret; |
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261 | } |
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262 | } |
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263 | } |
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264 | |
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265 | closedir(dir); |
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266 | } |
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267 | |
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268 | return NULL; |
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269 | } |
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270 | |
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271 | static struct roar_dl_lhandle * _load_from_path(const char * name, int flags, int ra_init, |
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272 | struct roar_dl_librarypara * para) { |
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273 | struct roar_dl_lhandle * ret = NULL; |
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274 | char * host = NULL; |
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275 | char * hostvendor_buffer = NULL; |
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276 | char * hostvendor = NULL; |
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277 | char * hostname = NULL; |
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278 | size_t hostvendor_len; |
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279 | char * c, * d; |
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280 | |
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281 | if ( para != NULL && para->appname != NULL && para->appname[0] != 0 ) { |
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282 | host = roar_mm_strdup(para->appname); |
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283 | |
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284 | // if we are out of memory we will likely not pass the rest, so just return in error. |
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285 | if ( host == NULL ) |
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286 | return NULL; |
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287 | |
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288 | hostname = host; |
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289 | c = strstr(host, "<"); |
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290 | if ( c != NULL ) { |
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291 | while (c[-1] == ' ') c--; |
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292 | *c = 0; |
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293 | c++; |
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294 | while (*c == ' ' || *c == '<') c++; |
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295 | if ( *c ) { |
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296 | d = strstr(c, ">"); |
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297 | if ( d != NULL ) |
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298 | *d = 0; |
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299 | |
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300 | d = strstr(c, "/"); |
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301 | if ( d != NULL ) { |
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302 | *d = '-'; |
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303 | hostvendor = c; |
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304 | } else { |
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305 | hostvendor_len = roar_mm_strlen(c) + 1 /* tailing \0 */ + 6 /* "unreg-" */; |
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306 | hostvendor_buffer = roar_mm_malloc(hostvendor_len); |
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307 | |
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308 | // see above |
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309 | if ( hostvendor_buffer == NULL ) { |
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310 | roar_mm_free(host); |
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311 | return NULL; |
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312 | } |
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313 | |
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314 | roar_mm_strlcpy(hostvendor_buffer, "unreg-", hostvendor_len); |
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315 | roar_mm_strlcat(hostvendor_buffer, c, hostvendor_len); |
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316 | hostvendor = hostvendor_buffer; |
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317 | } |
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318 | } |
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319 | } |
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320 | } |
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321 | |
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322 | if ( hostvendor == NULL ) |
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323 | hostvendor = "universal"; |
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324 | |
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325 | if ( hostname == NULL ) |
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326 | hostname = "universal"; |
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327 | |
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328 | ret = _load_from_path_pvn(name, flags, ra_init, para, ROAR_PREFIX_PLUGINS, hostvendor, hostname); |
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329 | |
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330 | if ( host != NULL ) |
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331 | roar_mm_free(host); |
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332 | if ( hostvendor_buffer != NULL ) |
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333 | roar_mm_free(hostvendor_buffer); |
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334 | return ret; |
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335 | } |
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336 | #endif |
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337 | |
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338 | static struct roar_dl_lhandle * _roar_dl_open_pluginpath(const char * filename, int flags, |
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339 | int ra_init, struct roar_dl_librarypara * para) { |
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340 | flags |= ROAR_DL_FLAG_PLUGINPATH; |
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341 | flags -= ROAR_DL_FLAG_PLUGINPATH; |
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342 | |
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343 | #ifdef ROAR_HAVE_H_DIRENT |
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344 | // do normal open for everything with a path name. |
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345 | if ( strstr(filename, "/") != NULL ) |
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346 | return roar_dl_open(filename, flags, ra_init, para); |
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347 | |
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348 | return _load_from_path(filename, flags, ra_init, para); |
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349 | #else |
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350 | // fall back to system open function. |
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351 | return roar_dl_open(filename, flags, ra_init, para); |
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352 | #endif |
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353 | } |
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354 | |
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355 | struct roar_dl_lhandle * roar_dl_open(const char * filename, int flags, |
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356 | int ra_init, struct roar_dl_librarypara * para) { |
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357 | struct roar_dl_lhandle * ret = NULL; |
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358 | #if defined(ROAR_HAVE_H_DLFCN) |
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359 | #ifdef RTLD_DEEPBIND |
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360 | int libdl_flags = RTLD_DEEPBIND; |
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361 | #else |
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362 | int libdl_flags = 0; |
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363 | #endif |
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364 | #endif |
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365 | int err; |
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366 | |
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367 | switch (flags) { |
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368 | case ROAR_DL_FLAG_DEFAULTS: flags = ROAR_DL_FLAG_NONE; break; |
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369 | case ROAR_DL_FLAG_PLUGIN: flags = ROAR_DL_FLAG_PLUGINPATH; break; |
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370 | } |
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371 | |
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372 | if ( flags & ROAR_DL_FLAG_PLUGINPATH ) |
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373 | return _roar_dl_open_pluginpath(filename, flags, ra_init, para); |
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374 | |
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375 | #if defined(ROAR_HAVE_H_DLFCN) |
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376 | if ( flags & ROAR_DL_FLAG_LAZY ) { |
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377 | libdl_flags |= RTLD_LAZY; |
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378 | } else { |
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379 | libdl_flags |= RTLD_NOW; |
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380 | } |
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381 | #endif |
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382 | |
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383 | if ( (ret = roar_mm_malloc(sizeof(struct roar_dl_lhandle))) == NULL ) |
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384 | return NULL; |
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385 | |
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386 | memset(ret, 0, sizeof(struct roar_dl_lhandle)); |
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387 | |
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388 | roar_err_initstore(&(ret->context.error_state)); |
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389 | |
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390 | ret->flags = flags; |
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391 | ret->refc = 1; |
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392 | |
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393 | if ( flags & ROAR_DL_FLAG_STATIC ) { |
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394 | if ( filename == NULL ) { |
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395 | ret->libname = NULL; |
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396 | } else { |
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397 | ret->libname = roar_mm_strdup(filename); |
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398 | } |
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399 | } else { |
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400 | #if defined(ROAR_HAVE_H_DLFCN) |
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401 | ret->handle = dlopen(filename, libdl_flags); |
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402 | |
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403 | if ( ret->handle == NULL ) { |
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404 | ROAR_DBG("roar_dl_open(filename='%s', flags=%i, ra_init=%i, para=%p): Can not load library: %s", filename, flags, ra_init, para, roar_dl_errstr(ret)); |
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405 | roar_mm_free(ret); |
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406 | return NULL; |
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407 | } |
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408 | #elif defined(ROAR_TARGET_WIN32) |
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409 | ret->handle = LoadLibrary(filename); |
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410 | |
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411 | if ( ret->handle == NULL ) { |
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412 | roar_mm_free(ret); |
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413 | return NULL; |
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414 | } |
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415 | #else |
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416 | roar_mm_free(ret); |
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417 | roar_err_set(ROAR_ERROR_NOSYS); |
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418 | return NULL; |
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419 | #endif |
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420 | } |
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421 | |
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422 | ret->para = para; |
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423 | |
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424 | if ( ra_init ) { |
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425 | if ( roar_dl_ra_init(ret, NULL, para) == -1 ) { |
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426 | err = roar_error; |
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427 | ROAR_WARN("roar_dl_open(filename='%s', flags=%i, ra_init=%i, para=%p): Can not init RA lib: %s", filename, flags, ra_init, para, roar_error2str(err)); |
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428 | #if defined(ROAR_HAVE_H_DLFCN) |
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429 | if ( ret->handle != NULL ) |
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430 | dlclose(ret->handle); |
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431 | #elif defined(ROAR_TARGET_WIN32) |
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432 | if ( ret->handle != NULL ) |
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433 | FreeLibrary(ret->handle); |
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434 | #endif |
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435 | roar_mm_free(ret); |
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436 | roar_error = err; |
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437 | return NULL; |
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438 | } |
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439 | } |
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440 | |
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441 | if ( para != NULL ) |
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442 | roar_dl_para_ref(para); |
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443 | |
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444 | return ret; |
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445 | } |
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446 | |
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447 | int roar_dl_ref (struct roar_dl_lhandle * lhandle) { |
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448 | if ( (void*)lhandle < (void*)128 ) { |
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449 | ROAR_DBG("roar_dl_ref(lhandle=%p) = -1 // error=BADFH", lhandle); |
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450 | roar_err_set(ROAR_ERROR_BADFH); |
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451 | return -1; |
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452 | } |
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453 | |
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454 | lhandle->refc++; |
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455 | |
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456 | ROAR_DBG("roar_dl_ref(lhandle=%p) = 0", lhandle); |
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457 | return 0; |
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458 | } |
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459 | |
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460 | int roar_dl_unref (struct roar_dl_lhandle * lhandle) { |
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461 | int ret = -1; |
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462 | |
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463 | if ( (void*)lhandle < (void*)128 ) { |
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464 | ROAR_DBG("roar_dl_unref(lhandle=%p) = -1 // error=BADFH", lhandle); |
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465 | roar_err_set(ROAR_ERROR_BADFH); |
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466 | return -1; |
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467 | } |
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468 | |
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469 | lhandle->refc--; |
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470 | |
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471 | if ( lhandle->refc ) { |
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472 | ROAR_DBG("roar_dl_unref(lhandle=%p) = 0", lhandle); |
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473 | return 0; |
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474 | } |
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475 | |
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476 | roar_dl_unregister_fn(lhandle); |
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477 | |
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478 | if ( lhandle->lib != NULL && lhandle->lib->unload != NULL ) { |
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479 | roar_dl_context_restore(lhandle); |
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480 | lhandle->lib->unload(lhandle->para, lhandle->lib); |
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481 | roar_dl_context_store(lhandle); |
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482 | } |
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483 | |
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484 | #if defined(ROAR_HAVE_H_DLFCN) |
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485 | if ( lhandle->handle == NULL ) { |
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486 | ret = 0; |
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487 | } else { |
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488 | ret = dlclose(_roardl2ldl(lhandle)); |
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489 | } |
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490 | #elif defined(ROAR_TARGET_WIN32) |
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491 | if ( lhandle->handle == NULL ) { |
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492 | ret = 0; |
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493 | } else { |
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494 | if ( FreeLibrary(_roardl2winhandle(lhandle)) ) { |
---|
495 | ret = 0; |
---|
496 | } else { |
---|
497 | ret = -1; |
---|
498 | } |
---|
499 | } |
---|
500 | #else |
---|
501 | ret = -1; |
---|
502 | #endif |
---|
503 | |
---|
504 | if ( lhandle->context.global_data != NULL ) |
---|
505 | roar_mm_free(lhandle->context.global_data); |
---|
506 | |
---|
507 | if ( lhandle->para != NULL ) |
---|
508 | roar_dl_para_unref(lhandle->para); |
---|
509 | |
---|
510 | if ( lhandle->libname != NULL ) |
---|
511 | roar_mm_free(lhandle->libname); |
---|
512 | |
---|
513 | roar_mm_free(lhandle); |
---|
514 | |
---|
515 | ROAR_DBG("roar_dl_unref(lhandle=%p) = %i", lhandle, ret); |
---|
516 | return ret; |
---|
517 | } |
---|
518 | |
---|
519 | void * roar_dl_getsym(struct roar_dl_lhandle * lhandle, const char * sym, int type) { |
---|
520 | #if defined(ROAR_HAVE_H_DLFCN) |
---|
521 | void * ret = dlsym(_roardl2ldl(lhandle), sym); |
---|
522 | |
---|
523 | (void)type; |
---|
524 | |
---|
525 | ROAR_DBG("roar_dl_getsym(lhandle=%p, sym='%s', type=%i): ret=%p, errno=%s(%i), dlerror()='%s'", lhandle, sym, type, ret, strerror(errno), errno, dlerror()); |
---|
526 | ROAR_DBG("roar_dl_getsym(lhandle=%p, sym='%s', type=%i) = %p", lhandle, sym, type, ret); |
---|
527 | |
---|
528 | return ret; |
---|
529 | #elif defined(ROAR_TARGET_WIN32) |
---|
530 | FARPROC ret = GetProcAddress(_roardl2winhandle(lhandle), sym); |
---|
531 | return (void*)ret; |
---|
532 | #else |
---|
533 | ROAR_DBG("roar_dl_getsym(lhandle=%p, sym='%s', type=%i) = NULL // errno=NOSYS", lhandle, sym, type, ret); |
---|
534 | roar_err_set(ROAR_ERROR_NOSYS); |
---|
535 | return NULL; |
---|
536 | #endif |
---|
537 | } |
---|
538 | |
---|
539 | int roar_dl_ra_init(struct roar_dl_lhandle * lhandle, |
---|
540 | const char * prefix, |
---|
541 | struct roar_dl_librarypara * para) { |
---|
542 | struct roar_dl_lhandle * old_init; |
---|
543 | int old_fn; |
---|
544 | #define _SUFFIX "_roaraudio_library_init" |
---|
545 | char name[80] = _SUFFIX; |
---|
546 | struct roar_dl_libraryinst * (*func)(struct roar_dl_librarypara * para); |
---|
547 | struct roar_dl_libraryinst * lib; |
---|
548 | struct roar_dl_lhandle * getsymhandle = lhandle; |
---|
549 | void * global_data_state = NULL; |
---|
550 | int i; |
---|
551 | |
---|
552 | if ( (void*)lhandle < (void*)128 ) { |
---|
553 | if ( prefix == NULL ) |
---|
554 | return -1; |
---|
555 | } else { |
---|
556 | if ( lhandle->runtime_flags & RTF_RA_INITED ) |
---|
557 | return 0; |
---|
558 | |
---|
559 | if ( prefix == NULL ) |
---|
560 | prefix = lhandle->libname; |
---|
561 | |
---|
562 | if ( para == NULL ) |
---|
563 | para = lhandle->para; |
---|
564 | |
---|
565 | if ( lhandle->flags & ROAR_DL_FLAG_STATIC ) |
---|
566 | getsymhandle = ROAR_DL_HANDLE_DEFAULT; |
---|
567 | } |
---|
568 | |
---|
569 | |
---|
570 | if ( prefix != NULL ) { |
---|
571 | roar_mm_strscpy(name, "_"); |
---|
572 | roar_mm_strscat(name, prefix); |
---|
573 | roar_mm_strscat(name, _SUFFIX); |
---|
574 | } |
---|
575 | |
---|
576 | ROAR_DBG("roar_dl_ra_init(lhandle=%p, prefix='%s'): name='%s'", lhandle, prefix, name); |
---|
577 | |
---|
578 | if ( (func = roar_dl_getsym(getsymhandle, name, -1)) == NULL ) { |
---|
579 | ROAR_DBG("roar_dl_ra_init(lhandle=%p, prefix='%s') = -1", lhandle, prefix); |
---|
580 | return -1; |
---|
581 | } |
---|
582 | |
---|
583 | ROAR_DBG("roar_dl_ra_init(lhandle=%p, prefix='%s'): func=%p", lhandle, prefix, func); |
---|
584 | |
---|
585 | roar_err_set(ROAR_ERROR_BADLIB); // set a default error in case it returns NULL but not set an error code. |
---|
586 | lib = func(para); |
---|
587 | |
---|
588 | if ( lib == NULL ) |
---|
589 | return -1; |
---|
590 | |
---|
591 | if ( lib->version != ROAR_DL_LIBINST_VERSION ) |
---|
592 | return -1; |
---|
593 | |
---|
594 | if ( sizeof(struct roar_dl_libraryinst) > lib->len ) |
---|
595 | return -1; |
---|
596 | |
---|
597 | if ( lib->host_appname != NULL || lib->host_abiversion != NULL ) { |
---|
598 | // check for correct host. |
---|
599 | if ( para == NULL ) { |
---|
600 | roar_err_set(ROAR_ERROR_INVAL); |
---|
601 | return -1; |
---|
602 | } |
---|
603 | if ( roar_dl_para_check_version(para, lib->host_appname, lib->host_abiversion) == -1 ) |
---|
604 | return -1; |
---|
605 | } |
---|
606 | |
---|
607 | if ( (lib->libdep == NULL && lib->libdep_len) || (lib->libdep != NULL && !lib->libdep_len) ) { |
---|
608 | roar_err_set(ROAR_ERROR_BADLIB); |
---|
609 | return -1; |
---|
610 | } |
---|
611 | |
---|
612 | if ( lib->libdep != NULL && lib->libdep_len ) { |
---|
613 | // dynamic loader infos are currently not supported. |
---|
614 | roar_err_set(ROAR_ERROR_NOTSUP); |
---|
615 | return -1; |
---|
616 | } |
---|
617 | |
---|
618 | if ( !((void*)lhandle < (void*)128) ) { |
---|
619 | lhandle->lib = lib; |
---|
620 | |
---|
621 | if ( lib->global_data_len ) { |
---|
622 | lhandle->context.global_data = roar_mm_malloc(lib->global_data_len); |
---|
623 | if ( lhandle->context.global_data == NULL ) |
---|
624 | return -1; |
---|
625 | |
---|
626 | if ( lib->global_data_init == NULL ) { |
---|
627 | memset(lhandle->context.global_data, 0, lib->global_data_len); |
---|
628 | } else { |
---|
629 | memcpy(lhandle->context.global_data, lib->global_data_init, lib->global_data_len); |
---|
630 | } |
---|
631 | } |
---|
632 | } |
---|
633 | |
---|
634 | if ( lib->global_data_pointer != NULL ) { |
---|
635 | global_data_state = *(lib->global_data_pointer); |
---|
636 | if ( (void*)lhandle < (void*)128 ) { |
---|
637 | *(lib->global_data_pointer) = lib->global_data_init; |
---|
638 | } else { |
---|
639 | *(lib->global_data_pointer) = lhandle->context.global_data; |
---|
640 | } |
---|
641 | } |
---|
642 | |
---|
643 | old_init = __currently_inited; |
---|
644 | old_fn = __currently_inited_fn; |
---|
645 | __currently_inited = lhandle; |
---|
646 | for (i = 0; i < ROAR_DL_FN_MAX; i++) { |
---|
647 | __currently_inited_fn = i; |
---|
648 | if ( lib->func[i] != NULL ) |
---|
649 | lib->func[i](para, lib); |
---|
650 | } |
---|
651 | __currently_inited_fn = old_fn; |
---|
652 | __currently_inited = old_init; |
---|
653 | |
---|
654 | |
---|
655 | if ( lib->global_data_pointer != NULL ) { |
---|
656 | if ( !((void*)lhandle < (void*)128) ) { |
---|
657 | *(lib->global_data_pointer) = global_data_state; |
---|
658 | } |
---|
659 | } |
---|
660 | |
---|
661 | if ( !((void*)lhandle < (void*)128) ) |
---|
662 | lhandle->runtime_flags |= RTF_RA_INITED; |
---|
663 | |
---|
664 | return 0; |
---|
665 | } |
---|
666 | |
---|
667 | const char * roar_dl_errstr(struct roar_dl_lhandle * lhandle) { |
---|
668 | #if defined(ROAR_HAVE_H_DLFCN) |
---|
669 | (void)lhandle; |
---|
670 | return dlerror(); |
---|
671 | #elif defined(ROAR_TARGET_WIN32) |
---|
672 | roar_err_from_errno(); |
---|
673 | return roar_error2str(roar_error); |
---|
674 | #else |
---|
675 | return NULL; |
---|
676 | #endif |
---|
677 | } |
---|
678 | |
---|
679 | struct roar_dl_librarypara * roar_dl_getpara(struct roar_dl_lhandle * lhandle) { |
---|
680 | if ( (void*)lhandle < (void*)128 ) { |
---|
681 | roar_err_set(ROAR_ERROR_NOTSUP); |
---|
682 | return NULL; |
---|
683 | } |
---|
684 | |
---|
685 | if ( lhandle->para == NULL ) { |
---|
686 | roar_err_set(ROAR_ERROR_NOENT); |
---|
687 | return NULL; |
---|
688 | } |
---|
689 | |
---|
690 | if ( roar_dl_para_ref(lhandle->para) == -1 ) |
---|
691 | return NULL; |
---|
692 | |
---|
693 | return lhandle->para; |
---|
694 | } |
---|
695 | |
---|
696 | const struct roar_dl_libraryname * roar_dl_getlibname(struct roar_dl_lhandle * lhandle) { |
---|
697 | if ( (void*)lhandle < (void*)128 ) { |
---|
698 | roar_err_set(ROAR_ERROR_NOTSUP); |
---|
699 | return NULL; |
---|
700 | } |
---|
701 | |
---|
702 | if ( lhandle->lib == NULL ) { |
---|
703 | roar_err_set(ROAR_ERROR_BADLIB); |
---|
704 | return NULL; |
---|
705 | } |
---|
706 | |
---|
707 | if ( lhandle->lib->libname == NULL ) { |
---|
708 | roar_err_set(ROAR_ERROR_NOENT); |
---|
709 | return NULL; |
---|
710 | } |
---|
711 | |
---|
712 | if ( lhandle->lib->libname->version != ROAR_DL_LIBNAME_VERSION ) { |
---|
713 | roar_err_set(ROAR_ERROR_BADVERSION); |
---|
714 | return NULL; |
---|
715 | } |
---|
716 | |
---|
717 | if ( lhandle->lib->libname->len != sizeof(struct roar_dl_libraryname) ) { |
---|
718 | roar_err_set(ROAR_ERROR_HOLE); |
---|
719 | return NULL; |
---|
720 | } |
---|
721 | |
---|
722 | return lhandle->lib->libname; |
---|
723 | } |
---|
724 | |
---|
725 | int roar_dl_context_restore(struct roar_dl_lhandle * lhandle) { |
---|
726 | struct roar_error_state error_state; |
---|
727 | |
---|
728 | ROAR_DBG("roar_dl_context_restore(lhandle=%p) = ?", lhandle); |
---|
729 | |
---|
730 | if ( (void*)lhandle < (void*)128 ) { |
---|
731 | ROAR_DBG("roar_dl_context_restore(lhandle=%p) = -1 // errno=NOTSUP", lhandle); |
---|
732 | roar_err_set(ROAR_ERROR_NOTSUP); |
---|
733 | return -1; |
---|
734 | } |
---|
735 | |
---|
736 | roar_err_store(&error_state); |
---|
737 | roar_err_restore(&(lhandle->context.error_state)); |
---|
738 | lhandle->context.error_state = error_state; |
---|
739 | |
---|
740 | if ( lhandle->lib->global_data_pointer != NULL ) { |
---|
741 | ROAR_DBG("roar_dl_context_restore(lhandle=%p): gptr(%p): %p -> %p", lhandle, |
---|
742 | lhandle->lib->global_data_pointer, *(lhandle->lib->global_data_pointer), lhandle->context.global_data); |
---|
743 | lhandle->context.global_data_state = *(lhandle->lib->global_data_pointer); |
---|
744 | *(lhandle->lib->global_data_pointer) = lhandle->context.global_data; |
---|
745 | } |
---|
746 | |
---|
747 | if ( lhandle->para != NULL && lhandle->para->notifycore != NULL ) |
---|
748 | lhandle->context.notifycore = roar_notify_core_swap_global(lhandle->para->notifycore); |
---|
749 | |
---|
750 | ROAR_DBG("roar_dl_context_restore(lhandle=%p) = 0", lhandle); |
---|
751 | return 0; |
---|
752 | } |
---|
753 | |
---|
754 | int roar_dl_context_store(struct roar_dl_lhandle * lhandle) { |
---|
755 | struct roar_error_state error_state; |
---|
756 | |
---|
757 | ROAR_DBG("roar_dl_context_store(lhandle=%p) = ?", lhandle); |
---|
758 | |
---|
759 | if ( (void*)lhandle < (void*)128 ) { |
---|
760 | ROAR_DBG("roar_dl_context_store(lhandle=%p) = -1 // errno=NOTSUP", lhandle); |
---|
761 | roar_err_set(ROAR_ERROR_NOTSUP); |
---|
762 | return -1; |
---|
763 | } |
---|
764 | |
---|
765 | if ( lhandle->para != NULL && lhandle->para->notifycore != NULL ) { |
---|
766 | roar_notify_core_unref(roar_notify_core_swap_global(lhandle->context.notifycore)); |
---|
767 | roar_notify_core_unref(lhandle->context.notifycore); |
---|
768 | lhandle->context.notifycore = NULL; |
---|
769 | } |
---|
770 | |
---|
771 | if ( lhandle->lib->global_data_pointer != NULL ) { |
---|
772 | ROAR_DBG("roar_dl_context_store(lhandle=%p): gptr(%p): %p -> %p", lhandle, |
---|
773 | lhandle->lib->global_data_pointer, *(lhandle->lib->global_data_pointer), lhandle->context.global_data_state); |
---|
774 | *(lhandle->lib->global_data_pointer) = lhandle->context.global_data_state; |
---|
775 | } |
---|
776 | |
---|
777 | roar_err_store(&error_state); |
---|
778 | roar_err_restore(&(lhandle->context.error_state)); |
---|
779 | lhandle->context.error_state = error_state; |
---|
780 | |
---|
781 | ROAR_DBG("roar_dl_context_store(lhandle=%p) = 0", lhandle); |
---|
782 | return 0; |
---|
783 | } |
---|
784 | |
---|
785 | int roar_dl_appsched_trigger(struct roar_dl_lhandle * lhandle, enum roar_dl_appsched_trigger trigger) { |
---|
786 | int (*func) (struct roar_dl_librarypara * para) = NULL; |
---|
787 | int ret; |
---|
788 | |
---|
789 | if ( (void*)lhandle < (void*)128 ) { |
---|
790 | roar_err_set(ROAR_ERROR_NOTSUP); |
---|
791 | return -1; |
---|
792 | } |
---|
793 | |
---|
794 | if ( lhandle->lib == NULL ) { |
---|
795 | roar_err_set(ROAR_ERROR_TYPEMM); |
---|
796 | return -1; |
---|
797 | } |
---|
798 | |
---|
799 | if ( lhandle->lib->appsched == NULL ) { |
---|
800 | roar_err_set(ROAR_ERROR_NOENT); |
---|
801 | return -1; |
---|
802 | } |
---|
803 | |
---|
804 | switch (trigger) { |
---|
805 | #define _trig(lname,uname) \ |
---|
806 | case ROAR_DL_APPSCHED_ ## uname : \ |
---|
807 | func = lhandle->lib->appsched->lname; \ |
---|
808 | break; |
---|
809 | _trig(init, INIT); |
---|
810 | _trig(free, FREE); |
---|
811 | _trig(update, UPDATE); |
---|
812 | _trig(tick, TICK); |
---|
813 | _trig(wait, WAIT); |
---|
814 | // use ifndef here so warnings of unhandled enum values will be shown in DEBUG mode. |
---|
815 | #ifndef DEBUG |
---|
816 | default: |
---|
817 | roar_err_set(ROAR_ERROR_BADRQC); |
---|
818 | return -1; |
---|
819 | break; |
---|
820 | #endif |
---|
821 | } |
---|
822 | |
---|
823 | if ( func == NULL ) { |
---|
824 | if ( trigger == ROAR_DL_APPSCHED_INIT ) { |
---|
825 | lhandle->runtime_flags |= RTF_APPSCHED_INITED|RTF_APPSCHED_FREED; |
---|
826 | lhandle->runtime_flags -= RTF_APPSCHED_FREED; |
---|
827 | } else if ( trigger == ROAR_DL_APPSCHED_FREE ) { |
---|
828 | lhandle->runtime_flags |= RTF_APPSCHED_INITED|RTF_APPSCHED_FREED; |
---|
829 | lhandle->runtime_flags -= RTF_APPSCHED_INITED; |
---|
830 | } |
---|
831 | roar_err_set(ROAR_ERROR_NOENT); |
---|
832 | return -1; |
---|
833 | } |
---|
834 | |
---|
835 | if ( trigger == ROAR_DL_APPSCHED_INIT ) { |
---|
836 | if ( lhandle->runtime_flags & RTF_APPSCHED_INITED ) { |
---|
837 | roar_err_set(ROAR_ERROR_BUSY); |
---|
838 | return -1; |
---|
839 | } |
---|
840 | } else { |
---|
841 | if ( !(lhandle->runtime_flags & RTF_APPSCHED_INITED) ) { |
---|
842 | roar_err_set(ROAR_ERROR_BUSY); |
---|
843 | return -1; |
---|
844 | } |
---|
845 | } |
---|
846 | |
---|
847 | roar_dl_context_restore(lhandle); |
---|
848 | ret = func(lhandle->para); |
---|
849 | roar_dl_context_store(lhandle); |
---|
850 | |
---|
851 | if ( trigger == ROAR_DL_APPSCHED_INIT ) { |
---|
852 | lhandle->runtime_flags |= RTF_APPSCHED_INITED|RTF_APPSCHED_FREED; |
---|
853 | lhandle->runtime_flags -= RTF_APPSCHED_FREED; |
---|
854 | } else if ( trigger == ROAR_DL_APPSCHED_FREE ) { |
---|
855 | lhandle->runtime_flags |= RTF_APPSCHED_INITED|RTF_APPSCHED_FREED; |
---|
856 | lhandle->runtime_flags -= RTF_APPSCHED_INITED; |
---|
857 | } |
---|
858 | |
---|
859 | return ret; |
---|
860 | } |
---|
861 | |
---|
862 | |
---|
863 | #define __MAX_FNREGS 24 |
---|
864 | static struct __fnregs { |
---|
865 | struct roar_dl_lhandle * lhandle; |
---|
866 | int subtype; |
---|
867 | const void * object; |
---|
868 | size_t objectlen; |
---|
869 | int version; |
---|
870 | int options; |
---|
871 | } __fnrefs[ROAR_DL_FN_MAX][__MAX_FNREGS]; |
---|
872 | |
---|
873 | static int __fnreg_check_trigger(const struct __fnregs * handle) { |
---|
874 | if ( handle->subtype != ROAR_DL_FNREG_SUBTYPE ) |
---|
875 | return -1; |
---|
876 | if ( handle->version != ROAR_DL_FNREG_VERSION ) |
---|
877 | return -1; |
---|
878 | if ( handle->objectlen != ROAR_DL_FNREG_SIZE ) |
---|
879 | return -1; |
---|
880 | |
---|
881 | return 0; |
---|
882 | } |
---|
883 | |
---|
884 | static void __fnreg_trigger_if_match(const struct roar_dl_fnreg * callback, |
---|
885 | const struct __fnregs * reg, |
---|
886 | int fn, |
---|
887 | enum roar_dl_fnreg_action action) { |
---|
888 | if ( callback->fn != -1 && callback->fn != fn ) |
---|
889 | return; |
---|
890 | if ( callback->subtype != -1 && callback->subtype != reg->subtype ) |
---|
891 | return; |
---|
892 | if ( callback->version != -1 && callback->version != reg->version ) |
---|
893 | return; |
---|
894 | |
---|
895 | if ( callback->callback == NULL ) |
---|
896 | return; |
---|
897 | |
---|
898 | callback->callback(action, fn, reg->subtype, reg->object, reg->objectlen, reg->version, reg->options, callback->userdata, reg->lhandle); |
---|
899 | } |
---|
900 | |
---|
901 | static void __fnreg_trigger_by_reg(const struct __fnregs * reg, enum roar_dl_fnreg_action action, int fn) { |
---|
902 | size_t j; |
---|
903 | |
---|
904 | for (j = 0; j < __MAX_FNREGS; j++) { |
---|
905 | if ( __fnrefs[ROAR_DL_FN_REGFN][j].lhandle != NULL ) { |
---|
906 | if ( __fnreg_check_trigger(&(__fnrefs[ROAR_DL_FN_REGFN][j])) == -1 ) |
---|
907 | continue; |
---|
908 | __fnreg_trigger_if_match(__fnrefs[ROAR_DL_FN_REGFN][j].object, reg, fn, action); |
---|
909 | } |
---|
910 | } |
---|
911 | } |
---|
912 | |
---|
913 | static void __fnreg_trigger_by_handler(const struct __fnregs * handle, enum roar_dl_fnreg_action action) { |
---|
914 | size_t i, j; |
---|
915 | |
---|
916 | if ( __fnreg_check_trigger(handle) == -1 ) |
---|
917 | return; |
---|
918 | |
---|
919 | for (i = 0; i < ROAR_DL_FN_MAX; i++) { |
---|
920 | for (j = 0; j < __MAX_FNREGS; j++) { |
---|
921 | if ( __fnrefs[i][j].lhandle != NULL ) { |
---|
922 | __fnreg_trigger_if_match(handle->object, &(__fnrefs[i][j]), i, action); |
---|
923 | } |
---|
924 | } |
---|
925 | } |
---|
926 | } |
---|
927 | |
---|
928 | int roar_dl_register_fn(struct roar_dl_lhandle * lhandle, int fn, int subtype, const void * object, size_t objectlen, int version, int options) { |
---|
929 | struct __fnregs * c = NULL; |
---|
930 | size_t i; |
---|
931 | |
---|
932 | if ( lhandle == NULL ) |
---|
933 | lhandle = __currently_inited; |
---|
934 | |
---|
935 | if ( fn == -1 ) |
---|
936 | fn = __currently_inited_fn; |
---|
937 | |
---|
938 | if ( lhandle == NULL ) { |
---|
939 | roar_err_set(ROAR_ERROR_FAULT); |
---|
940 | return -1; |
---|
941 | } |
---|
942 | |
---|
943 | if ( fn < 0 || fn >= ROAR_DL_FN_MAX ) { |
---|
944 | roar_err_set(ROAR_ERROR_RANGE); |
---|
945 | return -1; |
---|
946 | } |
---|
947 | |
---|
948 | if ( object == NULL || objectlen == 0 ) { |
---|
949 | roar_err_set(ROAR_ERROR_INVAL); |
---|
950 | return -1; |
---|
951 | } |
---|
952 | |
---|
953 | for (i = 0; i < __MAX_FNREGS; i++) { |
---|
954 | if ( __fnrefs[fn][i].lhandle != NULL ) |
---|
955 | continue; |
---|
956 | c = &(__fnrefs[fn][i]); |
---|
957 | break; |
---|
958 | } |
---|
959 | |
---|
960 | if ( c == NULL ) { |
---|
961 | roar_err_set(ROAR_ERROR_NOSPC); |
---|
962 | return -1; |
---|
963 | } |
---|
964 | |
---|
965 | c->lhandle = lhandle; |
---|
966 | c->subtype = subtype; |
---|
967 | c->object = object; |
---|
968 | c->objectlen = objectlen; |
---|
969 | c->version = version; |
---|
970 | |
---|
971 | if ( fn == ROAR_DL_FN_REGFN ) { |
---|
972 | __fnreg_trigger_by_handler(c, ROAR_DL_FNREG); |
---|
973 | } else { |
---|
974 | __fnreg_trigger_by_reg(c, ROAR_DL_FNREG, fn); |
---|
975 | } |
---|
976 | |
---|
977 | return 0; |
---|
978 | } |
---|
979 | |
---|
980 | int roar_dl_unregister_fn(struct roar_dl_lhandle * lhandle) { |
---|
981 | size_t i, j; |
---|
982 | |
---|
983 | //} __fnrefs[ROAR_DL_FN_MAX][__MAX_FNREGS]; |
---|
984 | |
---|
985 | if ( lhandle == NULL ) { |
---|
986 | roar_err_set(ROAR_ERROR_FAULT); |
---|
987 | return -1; |
---|
988 | } |
---|
989 | |
---|
990 | for (i = 0; i < ROAR_DL_FN_MAX; i++) { |
---|
991 | for (j = 0; j < __MAX_FNREGS; j++) { |
---|
992 | if ( __fnrefs[i][j].lhandle == lhandle ) { |
---|
993 | if ( i == ROAR_DL_FN_REGFN ) { |
---|
994 | __fnreg_trigger_by_handler(&(__fnrefs[i][j]), ROAR_DL_FNUNREG); |
---|
995 | } else { |
---|
996 | __fnreg_trigger_by_reg(&(__fnrefs[i][j]), ROAR_DL_FNUNREG, i); |
---|
997 | } |
---|
998 | memset(&(__fnrefs[i][j]), 0, sizeof(__fnrefs[i][j])); |
---|
999 | __fnrefs[i][j].lhandle = NULL; |
---|
1000 | } |
---|
1001 | } |
---|
1002 | } |
---|
1003 | |
---|
1004 | return 0; |
---|
1005 | } |
---|
1006 | |
---|
1007 | //ll |
---|