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1 /* |
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2 |
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3 Copyright (C) 1999, 2000, 2002, 2003, 2005, 2006, 2007 John W. Eaton |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 3 of the License, or (at your |
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10 option) any later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, see |
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19 <http://www.gnu.org/licenses/>. |
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20 |
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21 */ |
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22 |
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23 #ifdef HAVE_CONFIG_H |
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24 #include <config.h> |
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25 #endif |
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26 |
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27 #if defined (HAVE_SHL_LOAD_API) |
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28 #include <cerrno> |
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29 #include <cstring> |
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30 #endif |
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31 |
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32 #if defined (HAVE_DYLD_API) |
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33 #include <mach-o/dyld.h> |
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34 #endif |
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35 |
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36 extern "C" |
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37 { |
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38 #if defined (HAVE_DLOPEN_API) |
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39 #if defined (HAVE_DLFCN_H) |
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40 #include <dlfcn.h> |
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41 #else |
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42 extern void *dlopen (const char *, int); |
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43 extern const char *dlerror (void); |
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44 extern void *dlsym (void *, const char *); |
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45 extern int dlclose (void *); |
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46 #endif |
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47 #elif defined (HAVE_SHL_LOAD_API) |
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48 #include <dl.h> |
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49 #elif defined (HAVE_LOADLIBRARY_API) |
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50 #include <windows.h> |
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51 #undef min |
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52 #undef max |
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53 #endif |
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54 } |
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55 |
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56 #include "file-stat.h" |
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57 #include "lo-error.h" |
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58 #include "oct-shlib.h" |
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59 #include "str-vec.h" |
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60 |
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61 class |
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62 octave_base_shlib : public octave_shlib |
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63 { |
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64 public: |
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65 |
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66 octave_base_shlib (void) |
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67 : octave_shlib (octave_xshlib ()), file (), fcn_names (), |
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68 tm_loaded (static_cast<time_t> (0)) |
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69 { count = 1; } |
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70 |
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71 octave_base_shlib (const std::string& f) |
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72 : octave_shlib (octave_xshlib ()), file (f), fcn_names (), |
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73 tm_loaded (static_cast<time_t> (0)) |
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74 { count = 1; } |
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75 |
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76 ~octave_base_shlib (void) { } |
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77 |
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78 void open (const std::string&) { } |
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79 |
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80 void *search (const std::string&, name_mangler = 0) { return 0; } |
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81 |
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82 void close (octave_shlib::close_hook = 0) { } |
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83 |
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84 bool remove (const std::string& fcn_name); |
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85 |
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86 bool is_open (void) const { return false; } |
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87 |
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88 bool is_out_of_date (void) const; |
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89 |
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90 int number_of_functions_loaded (void) const { return fcn_names.length (); } |
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91 |
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92 std::string file_name (void) const { return file; } |
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93 |
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94 octave_time time_loaded (void) const { return tm_loaded; } |
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95 |
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96 protected: |
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97 |
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98 std::string file; |
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99 |
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100 string_vector fcn_names; |
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101 |
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102 octave_time tm_loaded; |
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103 |
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104 void stamp_time (void); |
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105 |
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106 void add_to_fcn_names (const std::string& name); |
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107 |
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108 void do_close_hook (octave_shlib::close_hook = 0); |
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109 |
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110 void tabula_rasa (void); |
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111 |
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112 // No copying! |
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113 |
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114 octave_base_shlib (const octave_base_shlib&); |
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115 |
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116 octave_base_shlib& operator = (const octave_base_shlib&); |
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117 }; |
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118 |
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119 bool |
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120 octave_base_shlib::remove (const std::string& fcn_name) |
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121 { |
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122 bool retval = false; |
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123 |
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124 int n = number_of_functions_loaded (); |
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125 |
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126 string_vector new_fcn_names (n); |
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127 |
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128 int k = 0; |
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129 |
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130 for (int i = 0; i < n; i++) |
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131 { |
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132 if (fcn_names(i) == fcn_name) |
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133 retval = true; |
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134 else |
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135 new_fcn_names(k++) = fcn_names(i); |
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136 } |
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137 |
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138 new_fcn_names.resize (k); |
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139 |
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140 fcn_names = new_fcn_names; |
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141 |
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142 return retval; |
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143 } |
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144 |
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145 bool |
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146 octave_base_shlib::is_out_of_date (void) const |
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147 { |
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148 file_stat fs (file); |
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149 |
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150 return fs.is_newer (tm_loaded); |
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151 } |
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152 |
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153 void |
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154 octave_base_shlib::stamp_time (void) |
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155 { |
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156 tm_loaded.stamp (); |
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157 |
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158 file_stat fs (file); |
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159 |
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160 if (fs.is_newer (tm_loaded)) |
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161 (*current_liboctave_warning_with_id_handler) |
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162 ("Octave:warn-future-time-stamp", |
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163 "timestamp on file %s is in the future", file.c_str ()); |
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164 } |
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165 |
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166 void |
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167 octave_base_shlib::add_to_fcn_names (const std::string& name) |
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168 { |
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169 int n = number_of_functions_loaded (); |
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170 |
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171 for (int i = 0; i < n; i++) |
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172 if (fcn_names(i) == name) |
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173 return; |
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174 |
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175 fcn_names.resize (n+1); |
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176 |
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177 fcn_names(n) = name; |
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178 } |
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179 |
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180 void |
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181 octave_base_shlib::do_close_hook (octave_shlib::close_hook cl_hook) |
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182 { |
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183 int n = number_of_functions_loaded (); |
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184 |
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185 for (int i = 0; i < n; i++) |
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186 cl_hook (fcn_names(i)); |
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187 } |
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188 |
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189 void |
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190 octave_base_shlib::tabula_rasa (void) |
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191 { |
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192 file = ""; |
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193 |
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194 fcn_names.resize (0); |
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195 |
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196 tm_loaded = static_cast<time_t> (0); |
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197 } |
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198 |
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199 #if defined (HAVE_DLOPEN_API) |
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200 |
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201 class |
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202 octave_dlopen_shlib : public octave_base_shlib |
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203 { |
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204 public: |
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205 |
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206 octave_dlopen_shlib (void); |
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207 |
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208 ~octave_dlopen_shlib (void); |
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209 |
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210 void open (const std::string& f); |
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211 |
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212 void *search (const std::string& name, name_mangler mangler = 0); |
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213 |
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214 void close (octave_shlib::close_hook cl_hook = 0); |
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215 |
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216 bool is_open (void) const { return (library != 0); } |
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217 |
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218 private: |
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219 |
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220 // No copying! |
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221 |
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222 octave_dlopen_shlib (const octave_dlopen_shlib&); |
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223 |
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224 octave_dlopen_shlib& operator = (const octave_dlopen_shlib&); |
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225 |
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226 void *library; |
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227 }; |
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228 |
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229 octave_dlopen_shlib::octave_dlopen_shlib (void) |
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230 : octave_base_shlib (), library (0) |
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231 { |
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232 } |
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233 |
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234 octave_dlopen_shlib::~octave_dlopen_shlib (void) |
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235 { |
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236 close (); |
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237 } |
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238 |
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239 void |
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240 octave_dlopen_shlib::open (const std::string& f) |
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241 { |
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242 if (! is_open ()) |
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243 { |
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244 file = f; |
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245 |
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246 int flags = 0; |
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247 |
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248 #if defined (RTLD_LAZY) |
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249 flags |= RTLD_LAZY; |
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250 #endif |
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251 |
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252 #if defined (RTLD_GLOBAL) |
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253 flags |= RTLD_GLOBAL; |
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254 #endif |
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255 |
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256 library = dlopen (file.c_str (), flags); |
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257 |
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258 if (library) |
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259 stamp_time (); |
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260 else |
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261 { |
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262 const char *msg = dlerror (); |
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263 |
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264 if (msg) |
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265 (*current_liboctave_error_handler) ("%s", msg); |
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266 } |
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267 } |
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268 else |
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269 (*current_liboctave_error_handler) |
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270 ("shared library %s is already open", file.c_str ()); |
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271 } |
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272 |
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273 void * |
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274 octave_dlopen_shlib::search (const std::string& name, |
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275 octave_shlib::name_mangler mangler) |
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276 { |
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277 void *function = 0; |
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278 |
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279 if (is_open ()) |
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280 { |
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281 std::string sym_name = name; |
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282 |
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283 if (mangler) |
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284 sym_name = mangler (name); |
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285 |
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286 function = dlsym (library, sym_name.c_str ()); |
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287 |
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288 if (function) |
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289 add_to_fcn_names (name); |
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290 } |
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291 else |
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292 (*current_liboctave_error_handler) |
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293 ("shared library %s is not open", file.c_str ()); |
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294 |
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295 return function; |
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296 } |
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297 |
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298 void |
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299 octave_dlopen_shlib::close (octave_shlib::close_hook cl_hook) |
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300 { |
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301 if (is_open ()) |
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302 { |
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303 if (cl_hook) |
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304 do_close_hook (cl_hook); |
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305 |
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306 dlclose (library); |
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307 |
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308 library = 0; |
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309 |
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310 tabula_rasa (); |
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311 } |
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312 } |
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313 |
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314 #elif defined (HAVE_SHL_LOAD_API) |
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315 |
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316 class |
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317 octave_shl_load_shlib : public octave_base_shlib |
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318 { |
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319 public: |
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320 |
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321 octave_shl_load_shlib (void); |
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322 |
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323 ~octave_shl_load_shlib (void); |
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324 |
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325 void open (const std::string& f); |
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326 |
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327 void *search (const std::string& name, name_mangler mangler = 0); |
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328 |
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329 void close (octave_shlib::close_hook cl_hook = 0); |
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330 |
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331 bool is_open (void) const { return (library != 0); } |
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332 |
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333 private: |
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334 |
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335 // No copying! |
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336 |
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337 octave_shl_load_shlib (const octave_shl_load_shlib&); |
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338 |
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339 octave_shl_load_shlib& operator = (const octave_shl_load_shlib&); |
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340 |
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341 shl_t library; |
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342 }; |
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343 |
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344 octave_shl_load_shlib::octave_shl_load_shlib (void) |
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345 : octave_base_shlib (), library (0) |
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346 { |
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347 } |
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348 |
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349 octave_shl_load_shlib::~octave_shl_load_shlib (void) |
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350 { |
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351 close (); |
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352 } |
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353 |
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354 void |
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355 octave_shl_load_shlib::open (const std::string& f) |
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356 { |
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357 if (! is_open ()) |
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358 { |
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359 file = f; |
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360 |
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361 library = shl_load (file.c_str (), BIND_DEFERRED, 0L); |
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362 |
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363 if (library) |
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364 stamp_time (); |
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365 else |
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366 { |
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367 using namespace std; |
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368 (*current_liboctave_error_handler) ("%s", strerror (errno)); |
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369 } |
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370 } |
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371 else |
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372 (*current_liboctave_error_handler) |
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373 ("shared library %s is already open", file.c_str ()); |
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374 } |
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375 |
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376 void * |
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377 octave_shl_load_shlib::search (const std::string& name, |
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378 octave_shlib::name_mangler mangler) |
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379 { |
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380 void *function = 0; |
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381 |
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382 if (is_open ()) |
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383 { |
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384 std::string sym_name = name; |
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385 |
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386 if (mangler) |
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387 sym_name = mangler (name); |
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388 |
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389 int status = shl_findsym (&library, sym_name.c_str (), |
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390 TYPE_UNDEFINED, &function); |
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391 |
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392 if (status == 0) |
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393 add_to_fcn_names (name); |
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394 } |
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395 else |
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396 (*current_liboctave_error_handler) |
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397 ("shared library %s is not open", file.c_str ()); |
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398 |
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399 return function; |
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400 } |
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401 |
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402 void |
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403 octave_shl_load_shlib::close (octave_shlib::close_hook cl_hook) |
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404 { |
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405 if (is_open ()) |
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406 { |
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407 if (cl_hook) |
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408 do_close_hook (cl_hook); |
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409 |
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410 shl_unload (library); |
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411 |
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412 library = 0; |
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413 |
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414 tabula_rasa (); |
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415 } |
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416 } |
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417 |
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418 #elif defined (HAVE_LOADLIBRARY_API) |
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419 |
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420 class |
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421 octave_w32_shlib: public octave_base_shlib |
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422 { |
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423 public: |
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424 |
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425 octave_w32_shlib (void); |
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426 |
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427 ~octave_w32_shlib (void); |
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428 |
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429 void open (const std::string& f); |
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430 |
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431 void *search (const std::string& name, name_mangler mangler = 0); |
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432 |
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433 void close (octave_shlib::close_hook cl_hook = 0); |
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434 |
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435 bool is_open (void) const { return (handle != 0); } |
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436 |
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437 private: |
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438 |
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439 // No copying! |
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440 |
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441 octave_w32_shlib (const octave_w32_shlib&); |
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442 |
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443 octave_w32_shlib& operator = (const octave_w32_shlib&); |
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444 |
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445 HINSTANCE handle; |
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446 }; |
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447 |
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448 octave_w32_shlib::octave_w32_shlib (void) |
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449 : octave_base_shlib (), handle (0) |
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450 { |
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451 } |
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452 |
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453 octave_w32_shlib::~octave_w32_shlib (void) |
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454 { |
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455 close (); |
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456 } |
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457 |
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458 void |
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459 octave_w32_shlib::open (const std::string& f) |
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460 { |
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461 if (! is_open ()) |
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462 { |
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463 file = f; |
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464 |
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465 handle = LoadLibrary (file.c_str ()); |
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466 |
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467 if (handle) |
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468 stamp_time (); |
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469 else |
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470 { |
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471 DWORD lastError = GetLastError (); |
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472 char *msg; |
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473 |
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474 switch (lastError) |
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475 { |
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476 case ERROR_MOD_NOT_FOUND: |
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477 case ERROR_DLL_NOT_FOUND: |
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478 msg = "could not find library or dependents"; |
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479 break; |
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480 |
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481 case ERROR_INVALID_DLL: |
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482 msg = "library or its dependents are damaged"; |
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483 break; |
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484 |
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485 case ERROR_DLL_INIT_FAILED: |
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486 msg = "library initialization routine failed"; |
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487 break; |
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488 |
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489 default: |
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490 msg = "library open failed"; |
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491 } |
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492 |
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493 (*current_liboctave_error_handler) ("%s: %s", msg, file.c_str ()); |
|
|
494 } |
|
|
495 } |
|
|
496 else |
|
|
497 (*current_liboctave_error_handler) |
|
|
498 ("shared library %s is already open", file.c_str ()); |
|
|
499 } |
|
|
500 |
|
5451
|
501 extern "C" |
|
|
502 { |
|
|
503 void * octave_w32_search (HINSTANCE handle, const char * name); |
|
|
504 } |
|
|
505 |
|
4110
|
506 void * |
|
|
507 octave_w32_shlib::search (const std::string& name, |
|
|
508 octave_shlib::name_mangler mangler) |
|
|
509 { |
|
|
510 void *function = 0; |
|
|
511 |
|
|
512 if (is_open ()) |
|
|
513 { |
|
|
514 std::string sym_name = name; |
|
|
515 |
|
|
516 if (mangler) |
|
|
517 sym_name = mangler (name); |
|
|
518 |
|
5451
|
519 function = octave_w32_library_search (handle, sym_name.c_str ()); |
|
4110
|
520 |
|
|
521 if (function) |
|
|
522 add_to_fcn_names (name); |
|
|
523 } |
|
|
524 else |
|
|
525 (*current_liboctave_error_handler) |
|
|
526 ("shared library %s is not open", file.c_str ()); |
|
|
527 |
|
|
528 return function; |
|
|
529 } |
|
|
530 |
|
|
531 void |
|
|
532 octave_w32_shlib::close (octave_shlib::close_hook cl_hook) |
|
|
533 { |
|
|
534 if (is_open ()) |
|
|
535 { |
|
5864
|
536 if (cl_hook) |
|
|
537 do_close_hook (cl_hook); |
|
4110
|
538 |
|
|
539 FreeLibrary (handle); |
|
|
540 |
|
|
541 handle = 0; |
|
|
542 |
|
|
543 tabula_rasa (); |
|
|
544 } |
|
|
545 } |
|
|
546 |
|
4162
|
547 #elif defined (HAVE_DYLD_API) |
|
|
548 |
|
|
549 class |
|
|
550 octave_dyld_shlib : public octave_base_shlib |
|
|
551 { |
|
|
552 public: |
|
|
553 |
|
|
554 octave_dyld_shlib (void); |
|
|
555 |
|
|
556 ~octave_dyld_shlib (void); |
|
|
557 |
|
5781
|
558 void open (const std::string& f); |
|
4162
|
559 |
|
|
560 void *search (const std::string& name, name_mangler mangler = 0); |
|
|
561 |
|
|
562 void close (octave_shlib::close_hook cl_hook = 0); |
|
|
563 |
|
|
564 bool is_open (void) const {return (isOpen); } |
|
|
565 |
|
|
566 private: |
|
|
567 |
|
|
568 // No copying! |
|
|
569 |
|
|
570 octave_dyld_shlib (const octave_dyld_shlib&); |
|
|
571 |
|
|
572 octave_dyld_shlib& operator = (const octave_dyld_shlib&); |
|
|
573 |
|
|
574 bool isOpen; |
|
|
575 NSObjectFileImage img; |
|
|
576 NSModule handle; |
|
|
577 }; |
|
|
578 |
|
|
579 octave_dyld_shlib::octave_dyld_shlib (void) |
|
|
580 : octave_base_shlib (), isOpen (false), handle (0) |
|
|
581 { |
|
|
582 } |
|
|
583 |
|
|
584 octave_dyld_shlib::~octave_dyld_shlib (void) |
|
|
585 { |
|
|
586 close (); |
|
|
587 } |
|
|
588 |
|
|
589 void |
|
5781
|
590 octave_dyld_shlib::open (const std::string& f) |
|
4162
|
591 { |
|
|
592 int returnCode; |
|
|
593 |
|
|
594 if (! is_open ()) |
|
|
595 { |
|
|
596 file = f; |
|
|
597 |
|
|
598 returnCode = NSCreateObjectFileImageFromFile (file.c_str (), &img); |
|
|
599 |
|
|
600 if (NSObjectFileImageSuccess == returnCode) |
|
|
601 { |
|
|
602 handle = NSLinkModule (img, file.c_str (), |
|
|
603 (NSLINKMODULE_OPTION_RETURN_ON_ERROR |
|
|
604 | NSLINKMODULE_OPTION_PRIVATE)); |
|
|
605 if (handle) |
|
|
606 { |
|
5781
|
607 stamp_time (); |
|
4162
|
608 isOpen = true; |
|
|
609 } |
|
|
610 else |
|
|
611 { |
|
|
612 (*current_liboctave_error_handler) |
|
|
613 ("couldn't link module %s", file.c_str ()); |
|
|
614 } |
|
|
615 } |
|
|
616 else |
|
|
617 { |
|
|
618 (*current_liboctave_error_handler) |
|
|
619 ("got NSObjectFileImageReturnCode %d", returnCode); |
|
|
620 |
|
5775
|
621 // FIXME -- should use NSLinkEditError () to get |
|
4162
|
622 // more info on what went wrong. |
|
|
623 } |
|
|
624 } |
|
|
625 else |
|
|
626 { |
|
|
627 (*current_liboctave_error_handler) |
|
|
628 ("bundle %s is already open", file.c_str ()); |
|
|
629 } |
|
|
630 } |
|
|
631 |
|
|
632 void * |
|
|
633 octave_dyld_shlib::search (const std::string& name, |
|
|
634 octave_shlib::name_mangler mangler) |
|
|
635 { |
|
|
636 void *function = 0; |
|
|
637 |
|
|
638 if (is_open ()) |
|
|
639 { |
|
|
640 std::string sym_name = name; |
|
|
641 |
|
|
642 if (mangler) |
|
|
643 sym_name = mangler (name); |
|
|
644 |
|
|
645 NSSymbol symbol = NSLookupSymbolInModule (handle, sym_name.c_str ()); |
|
|
646 |
|
|
647 if (symbol) |
|
|
648 { |
|
|
649 function = NSAddressOfSymbol (symbol); |
|
|
650 add_to_fcn_names (name); |
|
|
651 } |
|
|
652 } |
|
|
653 else |
|
|
654 (*current_liboctave_error_handler) |
|
|
655 ("bundle %s is not open", file.c_str ()); |
|
|
656 |
|
|
657 return function; |
|
|
658 } |
|
|
659 |
|
|
660 void |
|
|
661 octave_dyld_shlib::close (octave_shlib::close_hook cl_hook) |
|
|
662 { |
|
|
663 if (is_open ()) |
|
|
664 { |
|
|
665 do_close_hook (cl_hook); |
|
|
666 |
|
|
667 NSUnLinkModule (handle, NSUNLINKMODULE_OPTION_RESET_LAZY_REFERENCES); |
|
|
668 |
|
|
669 handle = 0; |
|
|
670 |
|
|
671 if (NSDestroyObjectFileImage (img)) |
|
|
672 isOpen = false; |
|
|
673 |
|
|
674 tabula_rasa (); |
|
|
675 } |
|
|
676 } |
|
|
677 |
|
3326
|
678 #endif |
|
|
679 |
|
|
680 octave_shlib * |
|
|
681 octave_shlib::make_shlib (void) |
|
|
682 { |
|
4110
|
683 #if defined (HAVE_DLOPEN_API) |
|
3326
|
684 return new octave_dlopen_shlib (); |
|
4110
|
685 #elif defined (HAVE_SHL_LOAD_API) |
|
3326
|
686 return new octave_shl_load_shlib (); |
|
4110
|
687 #elif defined (HAVE_LOADLIBRARY_API) |
|
|
688 return new octave_w32_shlib (); |
|
4162
|
689 #elif defined (HAVE_DYLD_API) |
|
|
690 return new octave_dyld_shlib (); |
|
3326
|
691 #else |
|
|
692 return new octave_base_shlib (); |
|
|
693 #endif |
|
|
694 } |
|
|
695 |
|
|
696 /* |
|
|
697 ;;; Local Variables: *** |
|
|
698 ;;; mode: C++ *** |
|
|
699 ;;; End: *** |
|
|
700 */ |
