1 | /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ |
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2 | |
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3 | /* |
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4 | * e-passwords.c |
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5 | * |
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6 | * Copyright (C) 2001 Ximian, Inc. |
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7 | */ |
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8 | |
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9 | /* |
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10 | * This program is free software; you can redistribute it and/or |
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11 | * modify it under the terms of version 2 of the GNU General Public |
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12 | * License as published by the Free Software Foundation. |
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13 | * |
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14 | * This program 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 program; if not, write to the Free Software |
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21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
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22 | * USA. |
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23 | */ |
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24 | |
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25 | #ifdef HAVE_CONFIG_H |
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26 | #include "config.h" |
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27 | #endif |
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28 | |
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29 | #include "e-passwords.h" |
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30 | #include <libgnome/gnome-defs.h> |
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31 | #include <libgnome/gnome-i18n.h> |
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32 | #include <libgnome/gnome-config.h> |
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33 | #include <libgnomeui/gnome-dialog.h> |
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34 | #include <libgnomeui/gnome-messagebox.h> |
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35 | #include <libgnomeui/gnome-stock.h> |
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36 | #include <gtk/gtkentry.h> |
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37 | #include <gtk/gtkcheckbutton.h> |
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38 | #include <bonobo-conf/bonobo-config-database.h> |
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39 | #include <bonobo/bonobo-object.h> |
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40 | #include <bonobo/bonobo-moniker-util.h> |
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41 | #include <bonobo/bonobo-exception.h> |
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42 | |
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43 | static char *decode_base64 (char *base64); |
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44 | |
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45 | Bonobo_ConfigDatabase db; |
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46 | static GHashTable *passwords = NULL; |
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47 | static char *component_name = NULL; |
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48 | |
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49 | static int base64_encode_close(unsigned char *in, int inlen, gboolean break_lines, unsigned char *out, int *state, int *save); |
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50 | static int base64_encode_step(unsigned char *in, int len, gboolean break_lines, unsigned char *out, int *state, int *save); |
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51 | |
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52 | /** |
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53 | * e_passwords_init: |
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54 | * |
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55 | * Initializes the e_passwords routines. Must be called before any other |
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56 | * e_passwords_* function. |
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57 | **/ |
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58 | void |
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59 | e_passwords_init (const char *component) |
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60 | { |
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61 | CORBA_Environment ev; |
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62 | |
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63 | /* open up our bonobo config database */ |
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64 | CORBA_exception_init (&ev); |
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65 | db = bonobo_get_object ("wombat-private:", "Bonobo/ConfigDatabase", &ev); |
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66 | |
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67 | if (BONOBO_EX (&ev) || db == CORBA_OBJECT_NIL) { |
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68 | char *err; |
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69 | g_error ("Very serious error, cannot activate private config database '%s'", |
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70 | (err = bonobo_exception_get_text (&ev))); |
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71 | g_free (err); |
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72 | CORBA_exception_free (&ev); |
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73 | return; |
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74 | } |
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75 | |
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76 | CORBA_exception_free (&ev); |
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77 | |
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78 | /* and create the per-session hash table */ |
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79 | passwords = g_hash_table_new (g_str_hash, g_str_equal); |
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80 | |
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81 | component_name = g_strdup (component); |
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82 | } |
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83 | |
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84 | static gboolean |
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85 | free_entry (gpointer key, gpointer value, gpointer user_data) |
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86 | { |
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87 | g_free (key); |
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88 | memset (value, 0, strlen (value)); |
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89 | g_free (value); |
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90 | return TRUE; |
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91 | } |
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92 | |
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93 | /** |
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94 | * e_passwords_shutdown: |
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95 | * |
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96 | * Cleanup routine to call before exiting. |
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97 | **/ |
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98 | void |
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99 | e_passwords_shutdown () |
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100 | { |
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101 | CORBA_Environment ev; |
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102 | |
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103 | /* sync our db work */ |
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104 | CORBA_exception_init (&ev); |
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105 | Bonobo_ConfigDatabase_sync (db, &ev); |
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106 | bonobo_object_release_unref (db, &ev); |
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107 | CORBA_exception_free (&ev); |
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108 | db = NULL; |
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109 | |
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110 | /* and destroy our per session hash */ |
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111 | g_hash_table_foreach_remove (passwords, free_entry, NULL); |
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112 | g_hash_table_destroy (passwords); |
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113 | passwords = NULL; |
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114 | |
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115 | g_free (component_name); |
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116 | component_name = NULL; |
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117 | } |
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118 | |
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119 | |
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120 | /** |
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121 | * e_passwords_forget_passwords: |
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122 | * |
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123 | * Forgets all cached passwords, in memory and on disk. |
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124 | **/ |
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125 | void |
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126 | e_passwords_forget_passwords () |
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127 | { |
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128 | CORBA_Environment ev; |
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129 | |
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130 | /* remove all the persistent passwords */ |
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131 | CORBA_exception_init (&ev); |
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132 | Bonobo_ConfigDatabase_removeDir (db, "/Passwords", &ev); |
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133 | Bonobo_ConfigDatabase_sync (db, &ev); |
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134 | CORBA_exception_free (&ev); |
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135 | |
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136 | /* free up the session passwords */ |
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137 | g_hash_table_foreach_remove (passwords, free_entry, NULL); |
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138 | } |
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139 | |
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140 | /** |
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141 | * e_passwords_clear_component_passwords: |
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142 | * |
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143 | * Forgets all disk cached passwords. |
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144 | **/ |
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145 | void |
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146 | e_passwords_clear_component_passwords () |
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147 | { |
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148 | CORBA_Environment ev; |
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149 | char *path; |
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150 | |
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151 | path = g_strdup_printf ("/Passwords/%s", component_name); |
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152 | |
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153 | CORBA_exception_init (&ev); |
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154 | Bonobo_ConfigDatabase_removeDir (db, path, &ev); |
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155 | Bonobo_ConfigDatabase_sync (db, &ev); |
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156 | CORBA_exception_free (&ev); |
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157 | |
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158 | g_free (path); |
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159 | } |
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160 | |
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161 | static char * |
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162 | password_path (const char *key) |
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163 | { |
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164 | int len, state, save; |
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165 | char *key64, *path; |
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166 | |
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167 | len = strlen (key); |
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168 | key64 = g_malloc0 ((len + 2) * 4 / 3 + 1); |
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169 | state = save = 0; |
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170 | base64_encode_close ((char*)key, len, FALSE, key64, &state, &save); |
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171 | path = g_strdup_printf ("/Passwords/%s/%s", component_name, key64); |
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172 | g_free (key64); |
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173 | |
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174 | return path; |
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175 | } |
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176 | |
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177 | /** |
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178 | * e_passwords_remember_password: |
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179 | * @key: the key |
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180 | * |
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181 | * Saves the password associated with @key to disk. |
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182 | **/ |
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183 | void |
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184 | e_passwords_remember_password (const char *key) |
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185 | { |
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186 | gpointer okey, value; |
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187 | char *path, *pass64; |
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188 | int len, state, save; |
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189 | |
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190 | if (!g_hash_table_lookup_extended (passwords, key, &okey, &value)) |
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191 | return; |
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192 | |
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193 | /* add it to the on-disk cache of passwords */ |
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194 | path = password_path (okey); |
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195 | |
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196 | len = strlen (value); |
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197 | pass64 = g_malloc0 ((len + 2) * 4 / 3 + 1); |
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198 | state = save = 0; |
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199 | base64_encode_close (value, len, FALSE, pass64, &state, &save); |
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200 | |
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201 | bonobo_config_set_string (db, path, pass64, NULL); |
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202 | g_free (path); |
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203 | g_free (pass64); |
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204 | |
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205 | /* now remove it from our session hash */ |
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206 | g_hash_table_remove (passwords, key); |
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207 | g_free (okey); |
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208 | g_free (value); |
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209 | } |
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210 | |
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211 | /** |
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212 | * e_passwords_forget_password: |
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213 | * @key: the key |
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214 | * |
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215 | * Forgets the password associated with @key, in memory and on disk. |
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216 | **/ |
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217 | void |
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218 | e_passwords_forget_password (const char *key) |
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219 | { |
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220 | gpointer okey, value; |
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221 | CORBA_Environment ev; |
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222 | char *path; |
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223 | |
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224 | if (g_hash_table_lookup_extended (passwords, key, &okey, &value)) { |
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225 | g_hash_table_remove (passwords, key); |
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226 | memset (value, 0, strlen (value)); |
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227 | g_free (okey); |
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228 | g_free (value); |
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229 | } |
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230 | |
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231 | /* clear it in the on disk db */ |
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232 | path = password_path (key); |
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233 | CORBA_exception_init (&ev); |
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234 | Bonobo_ConfigDatabase_removeValue (db, path, &ev); |
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235 | CORBA_exception_free (&ev); |
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236 | g_free (path); |
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237 | } |
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238 | |
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239 | /** |
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240 | * e_passwords_get_password: |
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241 | * @key: the key |
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242 | * |
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243 | * Return value: the password associated with @key, or %NULL. Caller |
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244 | * must free the returned password. |
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245 | **/ |
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246 | char * |
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247 | e_passwords_get_password (const char *key) |
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248 | { |
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249 | char *path, *passwd = g_hash_table_lookup (passwords, key); |
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250 | CORBA_Environment ev; |
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251 | char *encoded; |
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252 | |
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253 | if (passwd) |
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254 | return g_strdup (passwd); |
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255 | |
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256 | /* not part of the session hash, look it up in the on disk db */ |
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257 | path = password_path (key); |
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258 | |
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259 | /* We need to pass an ev to bonobo-conf, or it will emit a |
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260 | * g_warning if the data isn't found. |
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261 | */ |
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262 | CORBA_exception_init (&ev); |
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263 | encoded = bonobo_config_get_string (db, path, &ev); |
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264 | CORBA_exception_free (&ev); |
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265 | |
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266 | g_free (path); |
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267 | |
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268 | if (!encoded) |
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269 | return NULL; |
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270 | |
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271 | passwd = decode_base64 (encoded); |
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272 | g_free (encoded); |
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273 | |
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274 | return passwd; |
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275 | } |
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276 | |
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277 | /** |
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278 | * e_passwords_add_password: |
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279 | * @key: a key |
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280 | * @passwd: the password for @key |
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281 | * |
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282 | * This stores the @key/@passwd pair in the current session's password |
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283 | * hash. |
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284 | **/ |
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285 | void |
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286 | e_passwords_add_password (const char *key, const char *passwd) |
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287 | { |
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288 | gpointer okey, value; |
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289 | |
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290 | /* FIXME: shouldn't this be g_return_if_fail? */ |
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291 | if (!key || !passwd) |
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292 | return; |
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293 | |
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294 | if (g_hash_table_lookup_extended (passwords, key, &okey, &value)) { |
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295 | g_hash_table_remove (passwords, key); |
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296 | g_free (okey); |
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297 | g_free (value); |
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298 | } |
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299 | |
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300 | g_hash_table_insert (passwords, g_strdup (key), g_strdup (passwd)); |
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301 | } |
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302 | |
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303 | |
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304 | /** |
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305 | * e_passwords_ask_password: |
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306 | * @title: title for the password dialog |
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307 | * @key: key to store the password under |
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308 | * @prompt: prompt string |
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309 | * @secret: whether or not the password text should be ***ed out |
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310 | * @remember_type: whether or not to offer to remember the password, |
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311 | * and for how long. |
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312 | * @remember: on input, the default state of the remember checkbox. |
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313 | * on output, the state of the checkbox when the dialog was closed. |
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314 | * @parent: parent window of the dialog, or %NULL |
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315 | * |
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316 | * Asks the user for a password. |
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317 | * |
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318 | * Return value: the password, which the caller must free, or %NULL if |
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319 | * the user cancelled the operation. *@remember will be set if the |
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320 | * return value is non-%NULL and @remember_type is not |
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321 | * E_PASSWORDS_DO_NOT_REMEMBER. |
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322 | **/ |
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323 | char * |
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324 | e_passwords_ask_password (const char *title, const char *key, |
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325 | const char *prompt, gboolean secret, |
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326 | EPasswordsRememberType remember_type, |
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327 | gboolean *remember, |
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328 | GtkWindow *parent) |
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329 | { |
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330 | GtkWidget *dialog; |
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331 | GtkWidget *check = NULL, *entry; |
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332 | char *password; |
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333 | int button; |
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334 | |
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335 | dialog = gnome_message_box_new (prompt, GNOME_MESSAGE_BOX_QUESTION, |
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336 | GNOME_STOCK_BUTTON_OK, |
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337 | GNOME_STOCK_BUTTON_CANCEL, |
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338 | NULL); |
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339 | gtk_window_set_title (GTK_WINDOW (dialog), title); |
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340 | if (parent) |
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341 | gnome_dialog_set_parent (GNOME_DIALOG (dialog), parent); |
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342 | gnome_dialog_set_default (GNOME_DIALOG (dialog), 0); |
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343 | gnome_dialog_set_close (GNOME_DIALOG (dialog), FALSE); |
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344 | |
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345 | /* Password entry */ |
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346 | entry = gtk_entry_new(); |
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347 | if (secret) |
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348 | gtk_entry_set_visibility (GTK_ENTRY(entry), FALSE); |
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349 | |
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350 | gtk_box_pack_start (GTK_BOX (GNOME_DIALOG (dialog)->vbox), |
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351 | entry, FALSE, FALSE, 4); |
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352 | gtk_widget_show (entry); |
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353 | gtk_widget_grab_focus (entry); |
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354 | |
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355 | /* If Return is pressed in the text entry, propagate to the buttons */ |
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356 | gnome_dialog_editable_enters (GNOME_DIALOG(dialog), GTK_EDITABLE(entry)); |
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357 | |
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358 | /* Remember the password? */ |
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359 | if (remember_type != E_PASSWORDS_DO_NOT_REMEMBER) { |
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360 | const char *label; |
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361 | |
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362 | if (remember_type == E_PASSWORDS_REMEMBER_FOREVER) |
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363 | label = _("Remember this password"); |
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364 | else |
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365 | label = _("Remember this password for the remainder of this session"); |
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366 | check = gtk_check_button_new_with_label (label); |
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367 | gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (check), |
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368 | *remember); |
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369 | |
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370 | gtk_box_pack_end (GTK_BOX (GNOME_DIALOG (dialog)->vbox), |
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371 | check, TRUE, FALSE, 4); |
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372 | gtk_widget_show (check); |
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373 | } |
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374 | |
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375 | gtk_widget_show (dialog); |
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376 | button = gnome_dialog_run (GNOME_DIALOG (dialog)); |
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377 | |
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378 | if (button == 0) { |
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379 | password = gtk_editable_get_chars (GTK_EDITABLE (entry), 0, -1); |
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380 | if (remember_type != E_PASSWORDS_DO_NOT_REMEMBER) { |
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381 | *remember = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (check)); |
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382 | |
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383 | if (*remember || remember_type == E_PASSWORDS_REMEMBER_FOREVER) |
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384 | e_passwords_add_password (key, password); |
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385 | if (*remember && remember_type == E_PASSWORDS_REMEMBER_FOREVER) |
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386 | e_passwords_remember_password (key); |
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387 | } |
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388 | } else |
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389 | password = NULL; |
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390 | |
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391 | gnome_dialog_close (GNOME_DIALOG (dialog)); |
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392 | return password; |
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393 | } |
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394 | |
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395 | |
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396 | |
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397 | static char *base64_alphabet = |
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398 | "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; |
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399 | |
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400 | static unsigned char camel_mime_base64_rank[256] = { |
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401 | 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, |
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402 | 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, |
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403 | 255,255,255,255,255,255,255,255,255,255,255, 62,255,255,255, 63, |
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404 | 52, 53, 54, 55, 56, 57, 58, 59, 60, 61,255,255,255, 0,255,255, |
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405 | 255, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, |
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406 | 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25,255,255,255,255,255, |
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407 | 255, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, |
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408 | 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51,255,255,255,255,255, |
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409 | 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, |
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410 | 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, |
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411 | 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, |
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412 | 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, |
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413 | 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, |
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414 | 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, |
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415 | 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, |
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416 | 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, |
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417 | }; |
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418 | |
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419 | /* call this when finished encoding everything, to |
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420 | flush off the last little bit */ |
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421 | static int |
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422 | base64_encode_close(unsigned char *in, int inlen, gboolean break_lines, unsigned char *out, int *state, int *save) |
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423 | { |
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424 | int c1, c2; |
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425 | unsigned char *outptr = out; |
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426 | |
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427 | if (inlen>0) |
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428 | outptr += base64_encode_step(in, inlen, break_lines, outptr, state, save); |
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429 | |
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430 | c1 = ((unsigned char *)save)[1]; |
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431 | c2 = ((unsigned char *)save)[2]; |
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432 | |
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433 | switch (((char *)save)[0]) { |
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434 | case 2: |
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435 | outptr[2] = base64_alphabet[ ( (c2 &0x0f) << 2 ) ]; |
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436 | g_assert(outptr[2] != 0); |
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437 | goto skip; |
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438 | case 1: |
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439 | outptr[2] = '='; |
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440 | skip: |
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441 | outptr[0] = base64_alphabet[ c1 >> 2 ]; |
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442 | outptr[1] = base64_alphabet[ c2 >> 4 | ( (c1&0x3) << 4 )]; |
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443 | outptr[3] = '='; |
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444 | outptr += 4; |
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445 | break; |
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446 | } |
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447 | if (break_lines) |
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448 | *outptr++ = '\n'; |
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449 | |
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450 | *save = 0; |
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451 | *state = 0; |
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452 | |
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453 | return outptr-out; |
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454 | } |
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455 | |
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456 | /* |
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457 | performs an 'encode step', only encodes blocks of 3 characters to the |
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458 | output at a time, saves left-over state in state and save (initialise to |
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459 | 0 on first invocation). |
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460 | */ |
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461 | static int |
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462 | base64_encode_step(unsigned char *in, int len, gboolean break_lines, unsigned char *out, int *state, int *save) |
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463 | { |
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464 | register unsigned char *inptr, *outptr; |
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465 | |
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466 | if (len<=0) |
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467 | return 0; |
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468 | |
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469 | inptr = in; |
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470 | outptr = out; |
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471 | |
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472 | if (len + ((char *)save)[0] > 2) { |
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473 | unsigned char *inend = in+len-2; |
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474 | register int c1, c2, c3; |
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475 | register int already; |
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476 | |
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477 | already = *state; |
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478 | |
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479 | switch (((char *)save)[0]) { |
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480 | case 1: c1 = ((unsigned char *)save)[1]; goto skip1; |
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481 | case 2: c1 = ((unsigned char *)save)[1]; |
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482 | c2 = ((unsigned char *)save)[2]; goto skip2; |
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483 | } |
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484 | |
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485 | /* yes, we jump into the loop, no i'm not going to change it, it's beautiful! */ |
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486 | while (inptr < inend) { |
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487 | c1 = *inptr++; |
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488 | skip1: |
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489 | c2 = *inptr++; |
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490 | skip2: |
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491 | c3 = *inptr++; |
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492 | *outptr++ = base64_alphabet[ c1 >> 2 ]; |
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493 | *outptr++ = base64_alphabet[ c2 >> 4 | ( (c1&0x3) << 4 ) ]; |
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494 | *outptr++ = base64_alphabet[ ( (c2 &0x0f) << 2 ) | (c3 >> 6) ]; |
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495 | *outptr++ = base64_alphabet[ c3 & 0x3f ]; |
---|
496 | /* this is a bit ugly ... */ |
---|
497 | if (break_lines && (++already)>=19) { |
---|
498 | *outptr++='\n'; |
---|
499 | already = 0; |
---|
500 | } |
---|
501 | } |
---|
502 | |
---|
503 | ((char *)save)[0] = 0; |
---|
504 | len = 2-(inptr-inend); |
---|
505 | *state = already; |
---|
506 | } |
---|
507 | |
---|
508 | if (len>0) { |
---|
509 | register char *saveout; |
---|
510 | |
---|
511 | /* points to the slot for the next char to save */ |
---|
512 | saveout = & (((char *)save)[1]) + ((char *)save)[0]; |
---|
513 | |
---|
514 | /* len can only be 0 1 or 2 */ |
---|
515 | switch(len) { |
---|
516 | case 2: *saveout++ = *inptr++; |
---|
517 | case 1: *saveout++ = *inptr++; |
---|
518 | } |
---|
519 | ((char *)save)[0]+=len; |
---|
520 | } |
---|
521 | |
---|
522 | return outptr-out; |
---|
523 | } |
---|
524 | |
---|
525 | |
---|
526 | /** |
---|
527 | * base64_decode_step: decode a chunk of base64 encoded data |
---|
528 | * @in: input stream |
---|
529 | * @len: max length of data to decode |
---|
530 | * @out: output stream |
---|
531 | * @state: holds the number of bits that are stored in @save |
---|
532 | * @save: leftover bits that have not yet been decoded |
---|
533 | * |
---|
534 | * Decodes a chunk of base64 encoded data |
---|
535 | **/ |
---|
536 | static int |
---|
537 | base64_decode_step(unsigned char *in, int len, unsigned char *out, int *state, unsigned int *save) |
---|
538 | { |
---|
539 | register unsigned char *inptr, *outptr; |
---|
540 | unsigned char *inend, c; |
---|
541 | register unsigned int v; |
---|
542 | int i; |
---|
543 | |
---|
544 | inend = in+len; |
---|
545 | outptr = out; |
---|
546 | |
---|
547 | /* convert 4 base64 bytes to 3 normal bytes */ |
---|
548 | v=*save; |
---|
549 | i=*state; |
---|
550 | inptr = in; |
---|
551 | while (inptr<inend) { |
---|
552 | c = camel_mime_base64_rank[*inptr++]; |
---|
553 | if (c != 0xff) { |
---|
554 | v = (v<<6) | c; |
---|
555 | i++; |
---|
556 | if (i==4) { |
---|
557 | *outptr++ = v>>16; |
---|
558 | *outptr++ = v>>8; |
---|
559 | *outptr++ = v; |
---|
560 | i=0; |
---|
561 | } |
---|
562 | } |
---|
563 | } |
---|
564 | |
---|
565 | *save = v; |
---|
566 | *state = i; |
---|
567 | |
---|
568 | /* quick scan back for '=' on the end somewhere */ |
---|
569 | /* fortunately we can drop 1 output char for each trailing = (upto 2) */ |
---|
570 | i=2; |
---|
571 | while (inptr>in && i) { |
---|
572 | inptr--; |
---|
573 | if (camel_mime_base64_rank[*inptr] != 0xff) { |
---|
574 | if (*inptr == '=') |
---|
575 | outptr--; |
---|
576 | i--; |
---|
577 | } |
---|
578 | } |
---|
579 | |
---|
580 | /* if i!= 0 then there is a truncation error! */ |
---|
581 | return outptr-out; |
---|
582 | } |
---|
583 | |
---|
584 | static char * |
---|
585 | decode_base64 (char *base64) |
---|
586 | { |
---|
587 | char *plain, *pad = "=="; |
---|
588 | int len, out, state, save; |
---|
589 | |
---|
590 | len = strlen (base64); |
---|
591 | plain = g_malloc0 (len); |
---|
592 | state = save = 0; |
---|
593 | out = base64_decode_step (base64, len, plain, &state, &save); |
---|
594 | if (len % 4) { |
---|
595 | base64_decode_step (pad, 4 - len % 4, plain + out, |
---|
596 | &state, &save); |
---|
597 | } |
---|
598 | |
---|
599 | return plain; |
---|
600 | } |
---|