lib/mcconfig/paths.c

   1 /*
   2    paths to configuration files
   3
   4    Copyright (C) 2010-2016
   5    Free Software Foundation, Inc.
   6
   7    Written by:
   8    Slava Zanko <slavazanko@gmail.com>, 2010.
   9
  10    This file is part of the Midnight Commander.
  11
  12    The Midnight Commander is free software: you can redistribute it
  13    and/or modify it under the terms of the GNU General Public License as
  14    published by the Free Software Foundation, either version 3 of the License,
  15    or (at your option) any later version.
  16
  17    The Midnight Commander is distributed in the hope that it will be useful,
  18    but WITHOUT ANY WARRANTY; without even the implied warranty of
  19    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20    GNU General Public License for more details.
  21
  22    You should have received a copy of the GNU General Public License
  23    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  24  */
  25
  26 #include <config.h>
  27
  28 #include <stdio.h>
  29 #include <stdlib.h>
  30 #include <errno.h>
  31
  32 #include "lib/global.h"
  33 #include "lib/fileloc.h"
  34 #include "lib/vfs/vfs.h"
  35 #include "lib/util.h"           /* unix_error_string() */
  36
  37 #include "lib/mcconfig.h"
  38
  39 /*** global variables ****************************************************************************/
  40
  41 /*** file scope macro definitions ****************************************************************/
  42
  43 #define MC_OLD_USERCONF_DIR ".mc"
  44
  45 /*** file scope type declarations ****************************************************************/
  46
  47 /*** file scope variables ************************************************************************/
  48
  49 static gboolean xdg_vars_initialized = FALSE;
  50 static char *mc_config_str = NULL;
  51 static char *mc_cache_str = NULL;
  52 static char *mc_data_str = NULL;
  53
  54 static gboolean config_dir_present = FALSE;
  55
  56 static const struct
  57 {
  58     const char *old_filename;
  59
  60     char **new_basedir;
  61     const char *new_filename;
  62 } mc_config_files_reference[] =
  63 {
  64     /* *INDENT-OFF* */
  65     /* config */
  66     { "ini",                                   &mc_config_str, MC_CONFIG_FILE},
  67     { "filehighlight.ini",                     &mc_config_str, MC_FHL_INI_FILE},
  68     { "hotlist",                               &mc_config_str, MC_HOTLIST_FILE},
  69     { "mc.keymap",                             &mc_config_str, GLOBAL_KEYMAP_FILE},
  70     { "menu",                                  &mc_config_str, MC_USERMENU_FILE},
  71     { "cedit" PATH_SEP_STR "Syntax",           &mc_config_str, EDIT_SYNTAX_FILE},
  72     { "cedit" PATH_SEP_STR "menu",             &mc_config_str, EDIT_HOME_MENU},
  73     { "cedit" PATH_SEP_STR "edit.indent.rc",   &mc_config_str, EDIT_DIR PATH_SEP_STR "edit.indent.rc"},
  74     { "cedit" PATH_SEP_STR "edit.spell.rc",    &mc_config_str, EDIT_DIR PATH_SEP_STR "edit.spell.rc"},
  75     { "panels.ini",                            &mc_config_str, MC_PANELS_FILE},
  76
  77     /* User should move this file with applying some changes in file */
  78     { "",                                      &mc_config_str, MC_FILEBIND_FILE},
  79
  80     /* data */
  81     { "skins",                                 &mc_data_str, MC_SKINS_SUBDIR},
  82     { "fish",                                  &mc_data_str, FISH_PREFIX},
  83     { "ashrc",                                 &mc_data_str, "ashrc"},
  84     { "bashrc",                                &mc_data_str, "bashrc"},
  85     { "inputrc",                               &mc_data_str, "inputrc"},
  86     { "extfs.d",                               &mc_data_str, MC_EXTFS_DIR},
  87     { "history",                               &mc_data_str, MC_HISTORY_FILE},
  88     { "filepos",                               &mc_data_str, MC_FILEPOS_FILE},
  89     { "cedit" PATH_SEP_STR "cooledit.clip",    &mc_data_str, EDIT_CLIP_FILE},
  90     { "",                                      &mc_data_str, MC_MACRO_FILE},
  91
  92     /* cache */
  93     { "log",                                   &mc_cache_str, "mc.log"},
  94     { "Tree",                                  &mc_cache_str, MC_TREESTORE_FILE},
  95     { "cedit" PATH_SEP_STR "cooledit.temp",    &mc_cache_str, EDIT_TEMP_FILE},
  96     { "cedit" PATH_SEP_STR "cooledit.block",   &mc_cache_str, EDIT_BLOCK_FILE},
  97
  98     {NULL, NULL, NULL}
  99     /* *INDENT-ON* */
 100 };
 101
 102 #if MC_HOMEDIR_XDG
 103 static const struct
 104 {
 105     char **old_basedir;
 106     const char *filename;
 107
 108     char **new_basedir;
 109 } mc_config_migrate_rules_fix[] =
 110 {
 111     /* *INDENT-OFF* */
 112     { &mc_data_str, MC_USERMENU_FILE,                       &mc_config_str},
 113     { &mc_data_str, EDIT_SYNTAX_FILE,                       &mc_config_str},
 114     { &mc_data_str, EDIT_HOME_MENU,                         &mc_config_str},
 115     { &mc_data_str, EDIT_DIR PATH_SEP_STR "edit.indent.rc", &mc_config_str},
 116     { &mc_data_str, EDIT_DIR PATH_SEP_STR "edit.spell.rc",  &mc_config_str},
 117     { &mc_data_str, MC_FILEBIND_FILE,                       &mc_config_str},
 118
 119     { &mc_cache_str, MC_HISTORY_FILE,                       &mc_data_str},
 120     { &mc_cache_str, MC_FILEPOS_FILE,                       &mc_data_str},
 121     { &mc_cache_str, EDIT_CLIP_FILE,                        &mc_data_str},
 122
 123     { &mc_cache_str, MC_PANELS_FILE,                        &mc_config_str},
 124
 125     {NULL, NULL, NULL}
 126     /* *INDENT-ON* */
 127 };
 128 #endif /* MC_HOMEDIR_XDG */
 129
 130 /*** file scope functions *********************************************************************** */
 131 /* --------------------------------------------------------------------------------------------- */
 132
 133 static void
 134 mc_config_mkdir (const char *directory_name, GError ** mcerror)
 135 {
 136     mc_return_if_error (mcerror);
 137
 138     if ((!g_file_test (directory_name, G_FILE_TEST_EXISTS | G_FILE_TEST_IS_DIR)) &&
 139         (g_mkdir_with_parents (directory_name, 0700) != 0))
 140         mc_propagate_error (mcerror, 0, _("Cannot create %s directory"), directory_name);
 141 }
 142
 143 /* --------------------------------------------------------------------------------------------- */
 144
 145 static char *
 146 mc_config_init_one_config_path (const char *path_base, const char *subdir, GError ** mcerror)
 147 {
 148     char *full_path;
 149
 150     mc_return_val_if_error (mcerror, FALSE);
 151
 152     full_path = g_build_filename (path_base, subdir, (char *) NULL);
 153     if (g_file_test (full_path, G_FILE_TEST_EXISTS))
 154     {
 155         if (g_file_test (full_path, G_FILE_TEST_IS_DIR))
 156         {
 157             config_dir_present = TRUE;
 158         }
 159         else
 160         {
 161             fprintf (stderr, "%s %s\n", _("FATAL: not a directory:"), full_path);
 162             exit (EXIT_FAILURE);
 163         }
 164     }
 165
 166     mc_config_mkdir (full_path, mcerror);
 167     if (mcerror != NULL && *mcerror != NULL)
 168         MC_PTR_FREE (full_path);
 169
 170     return full_path;
 171 }
 172
 173 /* --------------------------------------------------------------------------------------------- */
 174
 175 static char *
 176 mc_config_get_deprecated_path (void)
 177 {
 178     return g_build_filename (mc_config_get_home_dir (), MC_OLD_USERCONF_DIR, (char *) NULL);
 179 }
 180
 181 /* --------------------------------------------------------------------------------------------- */
 182
 183 static void
 184 mc_config_copy (const char *old_name, const char *new_name, GError ** mcerror)
 185 {
 186     mc_return_if_error (mcerror);
 187
 188     if (g_file_test (old_name, G_FILE_TEST_IS_REGULAR))
 189     {
 190         char *contents = NULL;
 191         size_t length;
 192
 193         if (g_file_get_contents (old_name, &contents, &length, mcerror))
 194             g_file_set_contents (new_name, contents, length, mcerror);
 195
 196         g_free (contents);
 197         return;
 198     }
 199
 200     if (g_file_test (old_name, G_FILE_TEST_IS_DIR))
 201     {
 202
 203         GDir *dir;
 204         const char *dir_name;
 205
 206         dir = g_dir_open (old_name, 0, mcerror);
 207         if (dir == NULL)
 208             return;
 209
 210         if (g_mkdir_with_parents (new_name, 0700) == -1)
 211         {
 212             g_dir_close (dir);
 213             mc_propagate_error (mcerror, 0,
 214                                 _("An error occurred while migrating user settings: %s"),
 215                                 unix_error_string (errno));
 216             return;
 217         }
 218
 219         while ((dir_name = g_dir_read_name (dir)) != NULL)
 220         {
 221             char *old_name2, *new_name2;
 222
 223             old_name2 = g_build_filename (old_name, dir_name, (char *) NULL);
 224             new_name2 = g_build_filename (new_name, dir_name, (char *) NULL);
 225             mc_config_copy (old_name2, new_name2, mcerror);
 226             g_free (new_name2);
 227             g_free (old_name2);
 228         }
 229     }
 230 }
 231
 232 /* --------------------------------------------------------------------------------------------- */
 233
 234 #if MC_HOMEDIR_XDG
 235 static void
 236 mc_config_fix_migrated_rules (void)
 237 {
 238     size_t rule_index;
 239
 240     for (rule_index = 0; mc_config_migrate_rules_fix[rule_index].old_basedir != NULL; rule_index++)
 241     {
 242         char *old_name;
 243
 244         old_name =
 245             g_build_filename (*mc_config_migrate_rules_fix[rule_index].old_basedir,
 246                               mc_config_migrate_rules_fix[rule_index].filename, (char *) NULL);
 247
 248         if (g_file_test (old_name, G_FILE_TEST_EXISTS))
 249         {
 250             char *new_name;
 251             const char *basedir = *mc_config_migrate_rules_fix[rule_index].new_basedir;
 252             const char *filename = mc_config_migrate_rules_fix[rule_index].filename;
 253
 254             new_name = g_build_filename (basedir, filename, (char *) NULL);
 255             rename (old_name, new_name);
 256             g_free (new_name);
 257         }
 258         g_free (old_name);
 259     }
 260 }
 261 #endif /* MC_HOMEDIR_XDG */
 262
 263 /* --------------------------------------------------------------------------------------------- */
 264
 265 static gboolean
 266 mc_config_deprecated_dir_present (void)
 267 {
 268     char *old_dir;
 269     gboolean is_present;
 270
 271     old_dir = mc_config_get_deprecated_path ();
 272     is_present = g_file_test (old_dir, G_FILE_TEST_EXISTS | G_FILE_TEST_IS_DIR);
 273     g_free (old_dir);
 274
 275     return is_present && !config_dir_present;
 276 }
 277
 278 /* --------------------------------------------------------------------------------------------- */
 279 /*** public functions ****************************************************************************/
 280 /* --------------------------------------------------------------------------------------------- */
 281
 282 void
 283 mc_config_init_config_paths (GError ** mcerror)
 284 {
 285     const char *profile_root;
 286     char *dir;
 287 #if MC_HOMEDIR_XDG == 0
 288     char *defined_userconf_dir;
 289 #endif
 290
 291     mc_return_if_error (mcerror);
 292
 293     if (xdg_vars_initialized)
 294         return;
 295
 296     profile_root = mc_get_profile_root ();
 297
 298 #if MC_HOMEDIR_XDG
 299     if (strcmp (profile_root, mc_config_get_home_dir ()) != 0)
 300     {
 301         /*
 302          * The user overrode the default profile root.
 303          *
 304          * In this case we can't use GLib's g_get_user_{config,cache,data}_dir()
 305          * as these functions use the user's home dir as the root.
 306          */
 307
 308         dir = g_build_filename (profile_root, ".config", (char *) NULL);
 309         mc_config_str = mc_config_init_one_config_path (dir, MC_USERCONF_DIR, mcerror);
 310         g_free (dir);
 311
 312         dir = g_build_filename (profile_root, ".cache", (char *) NULL);
 313         mc_cache_str = mc_config_init_one_config_path (dir, MC_USERCONF_DIR, mcerror);
 314         g_free (dir);
 315
 316         dir = g_build_filename (profile_root, ".local", "share", (char *) NULL);
 317         mc_data_str = mc_config_init_one_config_path (dir, MC_USERCONF_DIR, mcerror);
 318         g_free (dir);
 319     }
 320     else
 321     {
 322         mc_config_str =
 323             mc_config_init_one_config_path (g_get_user_config_dir (), MC_USERCONF_DIR, mcerror);
 324         mc_cache_str =
 325             mc_config_init_one_config_path (g_get_user_cache_dir (), MC_USERCONF_DIR, mcerror);
 326         mc_data_str =
 327             mc_config_init_one_config_path (g_get_user_data_dir (), MC_USERCONF_DIR, mcerror);
 328     }
 329
 330     mc_config_fix_migrated_rules ();
 331 #else /* MC_HOMEDIR_XDG */
 332     defined_userconf_dir = tilde_expand (MC_USERCONF_DIR);
 333     if (g_path_is_absolute (defined_userconf_dir))
 334         dir = defined_userconf_dir;
 335     else
 336     {
 337         g_free (defined_userconf_dir);
 338         dir = g_build_filename (profile_root, MC_USERCONF_DIR, (char *) NULL);
 339     }
 340
 341     mc_data_str = mc_cache_str = mc_config_str = mc_config_init_one_config_path (dir, "", mcerror);
 342
 343     g_free (dir);
 344 #endif /* MC_HOMEDIR_XDG */
 345
 346     xdg_vars_initialized = TRUE;
 347 }
 348
 349 /* --------------------------------------------------------------------------------------------- */
 350
 351 void
 352 mc_config_deinit_config_paths (void)
 353 {
 354     if (!xdg_vars_initialized)
 355         return;
 356
 357     g_free (mc_config_str);
 358 #if MC_HOMEDIR_XDG
 359     g_free (mc_cache_str);
 360     g_free (mc_data_str);
 361 #endif /* MC_HOMEDIR_XDG */
 362
 363     g_free (mc_global.share_data_dir);
 364     g_free (mc_global.sysconfig_dir);
 365
 366     xdg_vars_initialized = FALSE;
 367 }
 368
 369 /* --------------------------------------------------------------------------------------------- */
 370
 371 const char *
 372 mc_config_get_data_path (void)
 373 {
 374     if (!xdg_vars_initialized)
 375         mc_config_init_config_paths (NULL);
 376
 377     return (const char *) mc_data_str;
 378 }
 379
 380 /* --------------------------------------------------------------------------------------------- */
 381
 382 const char *
 383 mc_config_get_cache_path (void)
 384 {
 385     if (!xdg_vars_initialized)
 386         mc_config_init_config_paths (NULL);
 387
 388     return (const char *) mc_cache_str;
 389 }
 390
 391 /* --------------------------------------------------------------------------------------------- */
 392
 393 const char *
 394 mc_config_get_home_dir (void)
 395 {
 396     static const char *homedir = NULL;
 397
 398     if (homedir == NULL)
 399     {
 400         /* Prior to GLib 2.36, g_get_home_dir() ignores $HOME, which is why
 401          * we read it ourselves. As that function's documentation explains,
 402          * using $HOME is good for compatibility with other programs and
 403          * for running from test frameworks. */
 404         homedir = g_getenv ("HOME");
 405         if (homedir == NULL || *homedir == '\0')
 406             homedir = g_get_home_dir ();
 407     }
 408     return homedir;
 409 }
 410
 411 /* --------------------------------------------------------------------------------------------- */
 412
 413 const char *
 414 mc_config_get_path (void)
 415 {
 416     if (!xdg_vars_initialized)
 417         mc_config_init_config_paths (NULL);
 418
 419     return (const char *) mc_config_str;
 420 }
 421
 422 /* --------------------------------------------------------------------------------------------- */
 423
 424 gboolean
 425 mc_config_migrate_from_old_place (GError ** mcerror, char **msg)
 426 {
 427     char *old_dir;
 428     size_t rule_index;
 429
 430     mc_return_val_if_error (mcerror, FALSE);
 431
 432     if (!mc_config_deprecated_dir_present ())
 433         return FALSE;
 434
 435     old_dir = mc_config_get_deprecated_path ();
 436
 437     g_free (mc_config_init_one_config_path (mc_config_str, EDIT_DIR, mcerror));
 438 #if MC_HOMEDIR_XDG
 439     g_free (mc_config_init_one_config_path (mc_cache_str, EDIT_DIR, mcerror));
 440     g_free (mc_config_init_one_config_path (mc_data_str, EDIT_DIR, mcerror));
 441 #endif /* MC_HOMEDIR_XDG */
 442
 443     mc_return_val_if_error (mcerror, FALSE);
 444
 445     for (rule_index = 0; mc_config_files_reference[rule_index].old_filename != NULL; rule_index++)
 446     {
 447         char *old_name;
 448         if (*mc_config_files_reference[rule_index].old_filename == '\0')
 449             continue;
 450
 451         old_name =
 452             g_build_filename (old_dir, mc_config_files_reference[rule_index].old_filename,
 453                               (char *) NULL);
 454
 455         if (g_file_test (old_name, G_FILE_TEST_EXISTS))
 456         {
 457             char *new_name;
 458             const char *basedir = *mc_config_files_reference[rule_index].new_basedir;
 459             const char *filename = mc_config_files_reference[rule_index].new_filename;
 460
 461             new_name = g_build_filename (basedir, filename, (char *) NULL);
 462             mc_config_copy (old_name, new_name, mcerror);
 463             g_free (new_name);
 464         }
 465         g_free (old_name);
 466     }
 467
 468 #if MC_HOMEDIR_XDG
 469     *msg = g_strdup_printf (_("Your old settings were migrated from %s\n"
 470                               "to Freedesktop recommended dirs.\n"
 471                               "To get more info, please visit\n"
 472                               "http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html"),
 473                             old_dir);
 474 #else /* MC_HOMEDIR_XDG */
 475     *msg = g_strdup_printf (_("Your old settings were migrated from %s\n"
 476                               "to %s\n"), old_dir, mc_config_str);
 477 #endif /* MC_HOMEDIR_XDG */
 478
 479     g_free (old_dir);
 480
 481     return TRUE;
 482 }
 483
 484 /* --------------------------------------------------------------------------------------------- */
 485 /**
 486  * Get full path to config file by short name.
 487  *
 488  * @param config_name short name
 489  * @return full path to config file
 490  */
 491
 492 char *
 493 mc_config_get_full_path (const char *config_name)
 494 {
 495     size_t rule_index;
 496
 497     if (config_name == NULL)
 498         return NULL;
 499
 500     if (!xdg_vars_initialized)
 501         mc_config_init_config_paths (NULL);
 502
 503     for (rule_index = 0; mc_config_files_reference[rule_index].old_filename != NULL; rule_index++)
 504     {
 505         if (strcmp (config_name, mc_config_files_reference[rule_index].new_filename) == 0)
 506         {
 507             return g_build_filename (*mc_config_files_reference[rule_index].new_basedir,
 508                                      mc_config_files_reference[rule_index].new_filename,
 509                                      (char *) NULL);
 510         }
 511     }
 512     return NULL;
 513 }
 514
 515 /* --------------------------------------------------------------------------------------------- */
 516 /**
 517  * Get full path to config file by short name.
 518  *
 519  * @param config_name short name
 520  * @return object with full path to config file
 521  */
 522
 523 vfs_path_t *
 524 mc_config_get_full_vpath (const char *config_name)
 525 {
 526     vfs_path_t *ret_vpath;
 527     char *str_path;
 528
 529     str_path = mc_config_get_full_path (config_name);
 530
 531     ret_vpath = vfs_path_from_str (str_path);
 532     g_free (str_path);
 533     return ret_vpath;
 534 }
 535
 536 /* --------------------------------------------------------------------------------------------- */