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1 /* |
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2 |
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3 Copyright (C) 1996, 1997, 2000, 2002, 2003, 2005, 2006, 2007, 2008 |
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4 John W. Eaton |
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5 |
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6 This file is part of Octave. |
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7 |
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8 Octave is free software; you can redistribute it and/or modify it |
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9 under the terms of the GNU General Public License as published by the |
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10 Free Software Foundation; either version 3 of the License, or (at your |
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11 option) any later version. |
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12 |
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13 Octave is distributed in the hope that it will be useful, but WITHOUT |
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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16 for more details. |
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17 |
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18 You should have received a copy of the GNU General Public License |
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19 along with Octave; see the file COPYING. If not, see |
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20 <http://www.gnu.org/licenses/>. |
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21 |
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22 */ |
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23 |
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24 #ifdef HAVE_CONFIG_H |
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25 #include <config.h> |
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26 #endif |
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27 |
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28 #include <sys/types.h> |
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29 |
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30 #ifdef HAVE_GRP_H |
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31 #include <grp.h> |
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32 #endif |
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33 |
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34 #include "lo-error.h" |
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35 #include "oct-group.h" |
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36 #include "str-vec.h" |
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37 |
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38 #define NOT_SUPPORTED(nm) \ |
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39 nm ": not supported on this system" |
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40 |
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41 std::string |
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42 octave_group::name (void) const |
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43 { |
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44 if (! ok ()) |
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45 gripe_invalid (); |
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46 |
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47 return gr_name; |
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48 } |
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49 |
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50 std::string |
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51 octave_group::passwd (void) const |
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52 { |
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53 if (! ok ()) |
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54 gripe_invalid (); |
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55 |
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56 return gr_passwd; |
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57 } |
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58 |
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59 gid_t |
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60 octave_group::gid (void) const |
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61 { |
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62 if (! ok ()) |
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63 gripe_invalid (); |
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64 |
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65 return gr_gid; |
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66 } |
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67 |
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68 string_vector |
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69 octave_group::mem (void) const |
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70 { |
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71 if (! ok ()) |
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72 gripe_invalid (); |
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73 |
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74 return gr_mem; |
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75 } |
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76 |
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77 octave_group |
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78 octave_group::getgrent (void) |
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79 { |
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80 std::string msg; |
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81 return getgrent (msg); |
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82 } |
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83 |
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84 octave_group |
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85 octave_group::getgrent (std::string& msg) |
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86 { |
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87 #if defined (HAVE_GETGRENT) |
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88 msg = std::string (); |
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89 return octave_group (::getgrent (), msg); |
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90 #else |
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91 msg = NOT_SUPPORTED ("getgrent"); |
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92 return octave_group (); |
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93 #endif |
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94 } |
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95 |
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96 octave_group |
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97 octave_group::getgrgid (gid_t gid) |
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98 { |
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99 std::string msg; |
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100 return getgrgid (gid, msg); |
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101 } |
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102 |
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103 octave_group |
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104 octave_group::getgrgid (gid_t gid, std::string& msg) |
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105 { |
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106 #if defined (HAVE_GETGRGID) |
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107 msg = std::string (); |
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108 return octave_group (::getgrgid (gid), msg); |
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109 #else |
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110 msg = NOT_SUPPORTED ("getgruid"); |
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111 return octave_group (); |
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112 #endif |
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113 } |
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114 |
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115 octave_group |
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116 octave_group::getgrnam (const std::string& nm) |
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117 { |
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118 std::string msg; |
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119 return getgrnam (nm, msg); |
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120 } |
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121 |
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122 octave_group |
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123 octave_group::getgrnam (const std::string& nm, std::string& msg) |
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124 { |
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125 #if defined (HAVE_GETGRNAM) |
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126 msg = std::string (); |
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127 return octave_group (::getgrnam (nm.c_str ()), msg); |
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128 #else |
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129 msg = NOT_SUPPORTED ("getgrnam"); |
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130 return octave_group (); |
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131 #endif |
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132 } |
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133 |
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134 int |
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135 octave_group::setgrent (void) |
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136 { |
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137 std::string msg; |
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138 return setgrent (msg); |
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139 } |
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140 |
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141 int |
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142 octave_group::setgrent (std::string& msg) |
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143 { |
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144 #if defined (HAVE_SETGRENT) |
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145 msg = std::string (); |
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146 ::setgrent (); |
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147 return 0; |
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148 #else |
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149 msg = NOT_SUPPORTED ("setgrent"); |
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150 return -1; |
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151 #endif |
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152 } |
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153 |
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154 int |
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155 octave_group::endgrent (void) |
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156 { |
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157 std::string msg; |
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158 return endgrent (msg); |
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159 } |
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160 |
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161 int |
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162 octave_group::endgrent (std::string& msg) |
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163 { |
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164 #if defined (HAVE_ENDGRENT) |
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165 msg = std::string (); |
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166 ::endgrent (); |
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167 return 0; |
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168 #else |
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169 msg = NOT_SUPPORTED ("endgrent"); |
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170 return -1; |
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171 #endif |
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172 } |
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173 |
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174 octave_group::octave_group (void *p, std::string& msg) |
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175 : gr_name (), gr_passwd (), gr_gid (0), gr_mem (), valid (false) |
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176 { |
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177 #if defined (HAVE_GRP_H) |
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178 msg = std::string (); |
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179 |
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180 if (p) |
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181 { |
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182 struct group *gr = static_cast<struct group *> (p); |
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183 |
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184 gr_name = gr->gr_name; |
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185 |
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186 #if defined (HAVE_GR_PASSWD) |
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187 gr_passwd = gr->gr_passwd; |
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188 #endif |
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189 |
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190 gr_gid = gr->gr_gid; |
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191 |
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192 // FIXME -- maybe there should be a string_vector |
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193 // constructor that takes a NUL terminated list of C |
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194 // strings. |
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195 |
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196 const char * const *tmp = gr->gr_mem; |
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197 |
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198 int k = 0; |
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199 while (*tmp++) |
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200 k++; |
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201 |
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202 if (k > 0) |
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203 { |
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204 tmp = gr->gr_mem; |
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205 |
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206 gr_mem.resize (k); |
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207 |
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208 for (int i = 0; i < k; i++) |
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209 gr_mem[i] = tmp[i]; |
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210 } |
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211 |
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212 valid = true; |
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213 } |
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214 #else |
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215 msg = NOT_SUPPORTED ("group functions"); |
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216 #endif |
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217 } |
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218 |
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219 void |
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220 octave_group::gripe_invalid (void) const |
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221 { |
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222 (*current_liboctave_error_handler) ("invalid group object"); |
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223 } |
